mod_qos-11.36/0000775000000000000020000000000013016363764011465 5ustar rootbinmod_qos-11.36/tools/0000775000000000000020000000000013016363764012625 5ustar rootbinmod_qos-11.36/tools/configure.ac0000664000000000000020000000722513016363764015121 0ustar rootbin# -*- Autoconf -*- # Process this file with autoconf to produce a configure script. AC_PREREQ([2.50]) AC_INIT(mod_qos, 9.0, pbuchbinder@users.sourceforge.net) AC_CONFIG_SRCDIR([src/qscheck.c]) AM_INIT_AUTOMAKE AM_CONFIG_HEADER([config.h]) # Checks for programs. AC_PROG_CC # Checks for libraries. # Checks for header files. AC_CHECK_HEADERS([fcntl.h netdb.h stdlib.h string.h strings.h sys/socket.h unistd.h]) # Checks for typedefs, structures, and compiler characteristics. AC_TYPE_PID_T AC_TYPE_UID_T # Checks for library functions. AC_FUNC_FORK AC_FUNC_MALLOC AC_CHECK_FUNCS([ftruncate gethostbyname memset regcomp select socket strchr strerror strrchr strstr]) # START customize settings AC_ARG_ENABLE([use-static], AS_HELP_STRING(--enable-use-static,Try to use archives instead of shared libraries)) AC_ARG_ENABLE([full-static], AS_HELP_STRING(--enable-full-static,Try to compile a statical linked executable)) AC_ARG_ENABLE([ssl], AS_HELP_STRING(--disable-ssl,Disable ssl support (not supported yet))) AC_ARG_WITH(apr,AS_HELP_STRING(--with-apr=PATH,path to apr-1-config script), [if test ! -x $withval/apr-1-config; then AC_MSG_ERROR($withval/apr-1-config do not exist or is not executable); else APR_CONFIG="$withval/apr-1-config"; fi], [APR_CONFIG="apr-1-config"]) AC_ARG_WITH(apr-util,AS_HELP_STRING(--with-apr-util=PATH,path to apu-1-config script), [if test ! -x $withval/apu-1-config; then AC_MSG_ERROR($withval/apu-1-config do not exist or is not executable); else APU_CONFIG="$withval/apu-1-config"; fi], [APU_CONFIG="apu-1-config"]) AC_ARG_WITH(pcre,AS_HELP_STRING(--with-pcre=PATH,path to pcre-config script), [if test ! -x $withval/pcre-config; then AC_MSG_ERROR($withval/pcre-config do not exist or is not executable); else PCRE_CONFIG="$withval/pcre-config"; fi], [PCRE_CONFIG="pcre-config"]) AC_ARG_WITH(png,AS_HELP_STRING(--with-png=PATH,path to libpng-config script), [if test ! -x $withval/libpng-config; then AC_MSG_ERROR($withval/libpng-config do not exist or is not executable); else PNG_CONFIG="$withval/libpng-config"; fi], [PNG_CONFIG="libpng-config"]) AC_ARG_WITH(ssl,AS_HELP_STRING(--with-ssl=PATH,path to openssl source), [if test ! -d $withval; then AC_MSG_ERROR($withval is not a directory); else OPENSSL_LIB_PATH="-L${withval}"; OPENSSL_INCLUDES="-I${withval}/include"; fi], [OPENSSL_LIB_PATH=""; OPENSSL_INCLUDES=""]) APR_VERSION=`$APR_CONFIG --version` if test ! "$?" = "0"; then echo "libapr is missing, use --with-apr=PATH" exit -1 fi APU_VERSION=`$APU_CONFIG --version` if test ! "$?" = "0"; then echo "libaprutil is missing, use --with-apr-util=PATH" exit -1 fi PCRE_VERSION=`$PCRE_CONFIG --version` if test ! "$?" = "0"; then echo "libpcre is missing, use --with-pcre=PATH to specify the location of your pcre library" exit -1 fi PNG_VERSION=`$PNG_CONFIG --version` if test ! "$?" = "0"; then echo "libpng is missing, use --with-png=PATH to specify the location of your png library" #exit -1 fi # Store settings for includes, libs and flags INCLUDES="`$APR_CONFIG --includes` `$APU_CONFIG --includes` $OPENSSL_INCLUDES" CFLAGS="`$APR_CONFIG --cflags` `$PCRE_CONFIG --cflags` `$PNG_CONFIG --cflags` $CFLAGS $INCLUDES" CPPFLAGS="`$APR_CONFIG --cppflags` $CPPFLAGS" LIBS="$OPENSSL_LIB_PATH -lssl -lcrypto `$APR_CONFIG --link-ld` `$APU_CONFIG --link-ld` `$APR_CONFIG --libs` `$APU_CONFIG --libs` `$PCRE_CONFIG --libs` `$PNG_CONFIG --libs` -lz" # if link static if test "$enable_full_static" = "yes"; then LDFLAGS="-all-static" fi # if link static if test "$enable_use_static" = "yes"; then LDFLAGS="-static" fi # END customize settings AC_CONFIG_FILES([Makefile src/Makefile]) AC_OUTPUT mod_qos-11.36/tools/src/0000775000000000000020000000000013016363764013414 5ustar rootbinmod_qos-11.36/tools/src/qs_apo.c0000644000000000000020000001016413016363764015042 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qs_apo.c,v 1.2 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include /* apr/apr-util */ #include #include #include #include #include #include #include #include "qs_util.h" #include "qs_apo.h" static apr_table_t *qs_args(apr_pool_t *pool, const char *line) { char *last = apr_pstrdup(pool, line); apr_table_t* table = apr_table_make(pool, 10); char *val; while((val = apr_strtok(NULL, " ", &last))) { apr_table_addn(table, val, ""); } return table; } static void qs_failedexec(const char *msg, const char *cmd, apr_status_t status) { char buf[MAX_LINE]; apr_strerror(status, buf, sizeof(buf)); fprintf(stderr, "ERROR %s '%s': '%s'\n", msg, cmd, buf); exit(1); } /** * Reads a passphrase using the defined passphrase getter (executes * the program and reads the passphras from stdout). * * @param pool To allocate memory * @param prg Path of the program to exectue * @return The passphrase */ char *qs_readpwd(apr_pool_t *pool, const char *prg) { apr_status_t status; apr_proc_t proc; const char **args; apr_table_entry_t *entry; char *last; char *copy = apr_pstrdup(pool, prg); char *cmd = apr_strtok(copy, " ", &last); apr_table_t *a = qs_args(pool, prg); int i; apr_procattr_t *attr; apr_size_t len = MAX_LINE; char *buf = apr_pcalloc(pool, len); args = apr_pcalloc(pool, (apr_table_elts(a)->nelts + 1) * sizeof(const char *)); entry = (apr_table_entry_t *) apr_table_elts(a)->elts; for(i = 0; i < apr_table_elts(a)->nelts; i++) { args[i] = entry[i].key; } args[i] = NULL; if(cmd == NULL) { qs_failedexec("can't read password, invalid executable", prg, APR_EGENERAL); } if((status = apr_procattr_create(&attr, pool)) != APR_SUCCESS) { qs_failedexec("while reading password from executable", prg, status); } if((status = apr_procattr_cmdtype_set(attr, APR_PROGRAM_PATH)) != APR_SUCCESS) { qs_failedexec("while reading password from executable", prg, status); } if((status = apr_procattr_detach_set(attr, 0)) != APR_SUCCESS) { qs_failedexec("while reading password from executable", prg, status); } if((status = apr_procattr_io_set(attr, APR_FULL_BLOCK, APR_FULL_BLOCK, APR_NO_PIPE)) != APR_SUCCESS) { qs_failedexec("while reading password from executable", prg, status); } if((status = apr_proc_create(&proc, cmd, args, NULL, attr, pool)) != APR_SUCCESS) { qs_failedexec("could not execute program", prg, status); } else { char *e; status = apr_proc_wait(&proc, NULL, NULL, APR_WAIT); if(status != APR_CHILD_DONE && status != APR_SUCCESS) { qs_failedexec("while reading password from executable", prg, status); } status = apr_file_read(proc.out, buf, &len); if(status != APR_SUCCESS) { qs_failedexec("failed to read password from program", prg, status); } e = buf; while(e && e[0]) { if((e[0] == LF) || (e[0] == CR)) { e[0] = '\0'; } else { e++; } } } return buf; } mod_qos-11.36/tools/src/qslogger.c0000644000000000000020000003051513016363764015405 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2016 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qslogger.c,v 1.24 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" // [Wed Mar 28 22:40:41 2012] [warn] #define QS_DEFAULTPATTERN "^\\[[0-9a-zA-Z :]+\\] \\[([a-z]+)\\] " #define QS_MAX_PATTERN_MA 2 static int m_default_severity = LOG_NOTICE; /** * Similar to standard strstr() but case insensitive and lenght limitation * (string which is not 0 terminated). * * @param s1 String to search in * @param s2 Pattern to ind * @param len Length of s1 * @return pointer to the beginning of the substring s2 within s1, or NULL * if the substring is not found */ static const char *qs_strncasestr(const char *s1, const char *s2, int len) { const char *e1 = &s1[len-1]; char *p1, *p2; if (*s2 == '\0') { /* an empty s2 */ return((char *)s1); } while(1) { for ( ; (*s1 != '\0') && (s1 <= e1) && (apr_tolower(*s1) != apr_tolower(*s2)); s1++); if (*s1 == '\0' || s1 > e1) { return(NULL); } /* found first character of s2, see if the rest matches */ p1 = (char *)s1; p2 = (char *)s2; for (++p1, ++p2; (apr_tolower(*p1) == apr_tolower(*p2)) && (p1 <= e1); ++p1, ++p2) { if((p1 > e1) && (*p2 != '\0')) { // reached the end without match return NULL; } if (*p2 == '\0') { /* both strings ended together */ return((char *)s1); } } if (*p2 == '\0') { /* second string ended, a match */ break; } /* didn't find a match here, try starting at next character in s1 */ s1++; } return((char *)s1); } /** * Rerurns the priority value * * @param priorityname Part of the log message to search the priority in * @param len Length of the priority string * @return Priority, LOG_NOTICE (see m_default_severity) if provided name is not recognized. */ static int qsgetprio(const char *priorityname, int len) { int p = m_default_severity; if(!priorityname) { return p; } if(qs_strncasestr(priorityname, "alert", len)) { p = LOG_ALERT; } else if(qs_strncasestr(priorityname, "crit", len)) { p = LOG_CRIT; } else if(qs_strncasestr(priorityname, "debug", len)) { p = LOG_DEBUG; } else if(qs_strncasestr(priorityname, "emerg", len)) { p = LOG_EMERG; } else if(qs_strncasestr(priorityname, "err", len)) { p = LOG_ERR; } else if(qs_strncasestr(priorityname, "info", len)) { p = LOG_INFO; } else if(qs_strncasestr(priorityname, "notice", len)) { p = LOG_NOTICE; } else if(qs_strncasestr(priorityname, "panic", len)) { p = LOG_EMERG; } else if(qs_strncasestr(priorityname, "warn", len)) { p = LOG_WARNING; } return p; } /** * Extracts the severity of the message using the provided * regular expression and determinest the priofity using * qsgetprio(). * * @param preg Regular expression to extract the serverity * @param line Log fline to extract the severity from * @return Level or LOG_NOTICE (see m_default_severity) if level could not be determined. */ static int qsgetlevel(regex_t preg, const char *line) { int level = m_default_severity; regmatch_t ma[QS_MAX_PATTERN_MA]; if(regexec(&preg, line, QS_MAX_PATTERN_MA, ma, 0) == 0) { int len = ma[1].rm_eo - ma[1].rm_so; level = qsgetprio(&line[ma[1].rm_so], len); } return level; } /* entry within the facility table */ typedef struct { const char* name; int f; } qs_f_t; /** * Table of known facilities, see sys/syslog.h. */ static const qs_f_t qs_facilities[] = { #ifdef LOG_AUTHPRIV { "authpriv", LOG_AUTHPRIV }, #endif { "auth", LOG_AUTH }, { "cron", LOG_CRON }, { "daemon", LOG_DAEMON }, #ifdef LOG_FTP { "ftp", LOG_FTP }, #endif { "kern", LOG_KERN }, { "lpr", LOG_LPR }, { "mail", LOG_MAIL }, { "news", LOG_NEWS }, { "security", LOG_AUTH }, { "syslog", LOG_SYSLOG }, { "user", LOG_USER }, { "uucp", LOG_UUCP }, { "local0", LOG_LOCAL0 }, { "local1", LOG_LOCAL1 }, { "local2", LOG_LOCAL2 }, { "local3", LOG_LOCAL3 }, { "local4", LOG_LOCAL4 }, { "local5", LOG_LOCAL5 }, { "local6", LOG_LOCAL6 }, { "local7", LOG_LOCAL7 }, { NULL, -1 } }; /** * Determines the facility (user input). * * @param facilityname * @return The facility id or LOG_DAEMON if the provided * string is unknown. */ static int qsgetfacility(const char *facilityname) { int f = LOG_DAEMON; const qs_f_t *facilities = qs_facilities; if(!facilityname) { return f; } while(facilities->name) { if(strcasecmp(facilityname, facilities->name) == 0) { f = facilities->f; break; } facilities++; } return f; } /** * Usage message (or man page) * * @param cmd * @param man */ static void usage(const char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - another shell command interface to the system log module (syslog).\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s [-t ] [-f ] [-l ] [-x ] [-r ] [-d ] [-u ] [-p]\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "Use this utility to forward log messages to the systems syslog\n"); qs_man_print(man, "facility, e.g., to forward the messages to a remote host.\n"); qs_man_print(man, "It reads data from stdin.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf("\n.TP\n"); qs_man_print(man, " -t \n"); if(man) printf("\n"); qs_man_print(man, " Defines the tag name which shall be used to define the origin\n"); qs_man_print(man, " of the messages, e.g. 'httpd'.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -f \n"); if(man) printf("\n"); qs_man_print(man, " Defines the syslog facility. Default is 'daemon'.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -u \n"); if(man) printf("\n"); qs_man_print(man, " Becomes another user, e.g. www-data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -l \n"); if(man) printf("\n"); qs_man_print(man, " Defines the minimal severity a message must have in order to\n"); qs_man_print(man, " be forwarded. Default is 'DEBUG' (fowarding everything).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -x \n"); if(man) printf("\n"); qs_man_print(man, " Allows you to add a prefix (literal string) to every message.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -r \n"); if(man) printf("\n"); qs_man_print(man, " Specifies a regular expression which shall be used to\n"); qs_man_print(man, " determine the severity (syslog level) for each log line.\n"); qs_man_print(man, " The default pattern '"QS_DEFAULTPATTERN"' can\n"); qs_man_print(man, " be used for Apache error log messages but you may configure\n"); qs_man_print(man, " your own pattern matching other log formats. Use brackets\n"); qs_man_print(man, " to define the pattern enclosing the severity string.\n"); qs_man_print(man, " Default level (if severity can't be determined) is defined by the\n"); qs_man_print(man, " option '-d' (see below).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -d \n"); if(man) printf("\n"); qs_man_print(man, " The default severity if the specified pattern (-r) does not\n"); qs_man_print(man, " match and the message's serverity can't be determined. Default\n"); qs_man_print(man, " is 'NOTICE'.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Writes data also to stdout (for piped logging).\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); } else { printf("Example:\n"); } qs_man_println(man, " ErrorLog \"|./%s -t apache -f local7\"\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } int main(int argc, const char * const argv[]) { int line_len; char *line = calloc(1, MAX_LINE_BUFFER+1); const char *cmd = strrchr(argv[0], '/'); int pass = 0; const char *tag = NULL; int facility = LOG_DAEMON; int severity = LOG_DEBUG; int level = LOG_INFO; const char *regexpattern = QS_DEFAULTPATTERN; const char *username = NULL; const char *prefix = NULL; regex_t preg; if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv, "-p") == 0) { pass = 1; } else if(strcmp(*argv, "-f") == 0) { if (--argc >= 1) { const char *facilityname = *(++argv); facility = qsgetfacility(facilityname); } } else if(strcmp(*argv, "-l") == 0) { if (--argc >= 1) { const char *severityname = *(++argv); severity = qsgetprio(severityname, strlen(severityname)); } } else if(strcmp(*argv, "-x") == 0) { if (--argc >= 1) { prefix = *(++argv); } } else if(strcmp(*argv,"-u") == 0) { /* switch user id */ if (--argc >= 1) { username = *(++argv); } } else if(strcmp(*argv, "-d") == 0) { if (--argc >= 1) { const char *severityname = *(++argv); m_default_severity = qsgetprio(severityname, strlen(severityname)); } } else if(strcmp(*argv, "-t") == 0) { if (--argc >= 1) { tag = *(++argv); } } else if(strcmp(*argv, "-r") == 0) { if (--argc >= 1) { regexpattern = *(++argv); } } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } else { usage(cmd, 0); } argc--; argv++; } if(regcomp(&preg, regexpattern, REG_EXTENDED)) { fprintf(stderr, "[%s] failed to compile pattern %s", cmd, regexpattern); exit(1); } qs_setuid(username, cmd); openlog(tag ? tag : getlogin(), 0, facility); // start reading from stdin while(fgets(line, MAX_LINE_BUFFER, stdin) != NULL) { line_len = strlen(line) - 1; while(line_len > 0) { // cut tailing CR/LF if(line[line_len] >= ' ') { break; } line[line_len] = '\0'; line_len--; } // severity is determined using the regular expression provided by the user level = qsgetlevel(preg, line); if(level <= severity) { // send message if(prefix) { syslog(level, "%s%s", prefix, line); } else { syslog(level, "%s", line); } } if(pass) { printf("%s\n", line); fflush(stdout); } } free(line); closelog(); return 0; } mod_qos-11.36/tools/src/qsgeo.c0000644000000000000020000004067413016363764014707 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qsgeo.c,v 1.24 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include /* apr */ #include #include #include #include #include #include #include #include #include #include "qs_util.h" #define MAX_REG_MATCH 10 // "3758096128","3758096383","AU" #define QS_GEO_PATTERN "\"([0-9]+)\",\"([0-9]+)\",\"([A-Z0-9]{2}|-)\"" // "3758096128","3758096383","AU","Australia" #define QS_GEO_PATTERN_D "\"([0-9]+)\",\"([0-9]+)\",\"([A-Z0-9]{2})\",\"(.*)\"" // "192.83.198.0","192.83.198.255","3226715648","3226715903","AU","Australia" #define QS_GEO_PATTERN_EXT "\"[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+\",\"[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+\",\"([0-9]+)\",\"([0-9]+)\",\"([A-Z0-9]{2})\",\"(.*)\"" // 182.12.34.23 #define IPPATTERN "([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})[\"'\x0d\x0a, ]+" #define IPPATTERN2 "([0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3})[\"'\x0d\x0a,; ]+" static int m_inject = 0; static int m_verbose = 0; typedef struct { unsigned long start; char *c; } qos_inj_t; static const qos_inj_t m_inj[] = { { 167772160, "\"10.0.0.0\",\"10.255.255.255\",\"167772160\",\"184549375\",\"PV\",\"private network\"" }, { 2130706432, "\"127.0.0.0\",\"127.255.255.255\",\"2130706432\",\"2147483647\",\"LO\",\"local loopback\"" }, { 2886729728, "\"172.16.0.0\",\"172.31.255.255\",\"2886729728\",\"2887778303\",\"PV\",\"private network\"" }, { 3232235520, "\"192.168.0.0\",\"192.168.255.255\",\"3232235520\",\"3232301055\",\"PV\",\"private network\"" }, { 0, NULL } }; typedef struct { unsigned long start; unsigned long end; char country[3]; char c[500]; } qos_geo_t; typedef struct { int num; char *c; } qos_geo_stat_t; static int qos_is_num(const char *num) { int i = 0; while(num[i]) { if(!isdigit(num[i])) { return 0; } i++; } return 1; } /** * Converts an IPv4 address string to it's numeric value. * w.x.y.z results in 16777216*w + 65536*x + 256*y + z * * @param pool To make a copy of the address to parse * @param ip * @return The address or 0 on error */ static unsigned long qos_geo_str2long(apr_pool_t *pool, const char *ip) { char *p; char *i = apr_pstrdup(pool, ip); unsigned long addr = 0; p = strchr(i, '.'); if(!p) return 0; p[0] = '\0'; if(!qos_is_num(i)) return 0; addr += (atol(i) * 16777216); i = p; i++; p = strchr(i, '.'); if(!p) return 0; p[0] = '\0'; if(!qos_is_num(i)) return 0; addr += (atol(i) * 65536); i = p; i++; p = strchr(i, '.'); if(!p) return 0; p[0] = '\0'; if(!qos_is_num(i)) return 0; addr += (atol(i) * 256); i = p; i++; if(!qos_is_num(i)) return 0; addr += (atol(i)); return addr; } static void qos_geo_long2str(char *buf, unsigned long ip) { int a,b,c,d; a = ip % 256; ip = ip / 256; b = ip % 256; ip = ip / 256; c = ip % 256; ip = ip / 256; d = ip % 256; sprintf(buf, "%d.%d.%d.%d", d, c, b, a); } /** * Usage message (text or manpage format). */ static void usage(const char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - an utility to lookup a client's country code.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -d [-l] [-s] [-ip ]\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "Use this utility to resolve the country codes of IP addresses\n"); qs_man_print(man, "within existing log files. The utility reads the log file data\n"); qs_man_print(man, "from stdin and writes them, with the injected country code, to\n"); qs_man_print(man, "stdout.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf("\n.TP\n"); qs_man_print(man, " -d \n"); if(man) printf("\n"); qs_man_print(man, " Specifies the path to the geographical database files (CSV\n"); qs_man_print(man, " file containing IP address ranges and country codes).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -s\n"); if(man) printf("\n"); qs_man_print(man, " Writes a summary of the requests per country only.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -l\n"); if(man) printf("\n"); qs_man_print(man, " Writes the database to stdout (ignoring stdin) inserting\n"); qs_man_print(man, " local (127.*) and private (10.*, 172.16*, 192.168.*)\n"); qs_man_print(man, " network addresses.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -ip \n"); if(man) printf("\n"); qs_man_print(man, " Resolves a single IP address instead of processing a log file.\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); printf("Reading the file access_log and adding the country code to the IP address field:\n"); printf("\n"); } else { printf("Example reading the file access_log and adding the country code to\n"); printf("the IP address field:\n"); } qs_man_println(man, " cat access_log | %s -d GeoIPCountryWhois.csv\n", cmd); printf("\n"); if(man) { printf("Reading the file access_log and showing a summary only:\n"); printf("\n"); } else { printf("Example reading the file access_log and showing a summary only:\n"); } qs_man_println(man, " cat access_log | %s -d GeoIPCountryWhois.csv -s\n", cmd); printf("\n"); if(man) { printf("Resolving a single IP address:\n"); printf("\n"); } else { printf("Example resolving a single IP address:\n"); } qs_man_println(man, " %s -d GeoIPCountryWhois.csv -ip 192.84.12.23\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /** * Comperator to search entries using bsearch. */ static int qos_geo_comp(const void *_pA, const void *_pB) { unsigned long *pA = (unsigned long *)_pA; qos_geo_t *pB = (qos_geo_t *)_pB; unsigned long search = *pA; if((search >= pB->start) && (search <= pB->end)) return 0; if(search > pB->start) return 1; if(search < pB->start) return -1; return -1; // error } /** * Loads the (sorted) CSV file into the memory. * * @param pool * @param db Path to the db file * @param size Returns the size f the db (elements in the array) * @param msg Error message if something got wrong * @return Array with all entries from the CSV file (or NULL on error) */ static qos_geo_t *qos_loadgeo(apr_pool_t *pool, const char *db, int *size, char **msg, int *errors) { regmatch_t ma[MAX_REG_MATCH]; regex_t preg; regex_t pregd; regex_t pregext; qos_geo_t *geo = NULL; qos_geo_t *g = NULL; qos_geo_t *last = NULL; int lines = 0; char line[HUGE_STRING_LEN]; char buf[HUGE_STRING_LEN]; FILE *file; const qos_inj_t *inj = m_inj; *size = 0; if(regcomp(&preg, QS_GEO_PATTERN, REG_EXTENDED)) { // internal error *msg = apr_pstrdup(pool, "failed to compile regular expression "QS_GEO_PATTERN); (*errors)++; return NULL; } if(regcomp(&pregd, QS_GEO_PATTERN_D, REG_EXTENDED)) { // internal error *msg = apr_pstrdup(pool, "failed to compile regular expression "QS_GEO_PATTERN_D); (*errors)++; return NULL; } if(regcomp(&pregext, QS_GEO_PATTERN_EXT, REG_EXTENDED)) { // internal error *msg = apr_pstrdup(pool, "failed to compile regular expression "QS_GEO_PATTERN_EXT); (*errors)++; return NULL; } file = fopen(db, "r"); if(!file) { (*errors)++; return NULL; } while(fgets(line, sizeof(line), file) != NULL) { if(strlen(line) > 0) { if(regexec(&preg, line, 0, NULL, 0) == 0) { lines++; } else { *msg = apr_psprintf(pool, "invalid entry in database: '%s'", line); (*errors)++; if(m_verbose) { char *p = *msg; while(p[0]) { if(p[0] < 32) { p[0] = '.'; } p++; } fprintf(stderr, "line %d: %s\n", lines, *msg); } } } } *size = lines; geo = apr_pcalloc(pool, sizeof(qos_geo_t) * lines); g = geo; fseek(file, 0, SEEK_SET); lines = 0; while(fgets(line, sizeof(line), file) != NULL) { lines++; if(strlen(line) > 0) { int plus = 0; if(m_inject) { strcpy(buf, line); } if(regexec(&pregd, line, MAX_REG_MATCH, ma, 0) == 0) { plus = 1; } if(plus || regexec(&preg, line, MAX_REG_MATCH, ma, 0) == 0) { int missingAddr = 0; if(regexec(&pregext, line, 0, NULL, 0) != 0) { missingAddr = 1; } line[ma[1].rm_eo] = '\0'; line[ma[2].rm_eo] = '\0'; line[ma[3].rm_eo] = '\0'; g->start = atoll(&line[ma[1].rm_so]); g->end = atoll(&line[ma[2].rm_so]); g->c[0] = '\0'; if(m_inject) { if(inj->start && (g->start > inj->start)) { printf("%s\n", inj->c); inj++; } else if(g->start != inj->start) { if(missingAddr) { /* some databases do not include IP address representation (but number only) */ char bs[128]; char be[128]; qos_geo_long2str(bs, g->start); qos_geo_long2str(be, g->end); printf("\"%s\",\"%s\",%s", bs, be, buf); } } if(!missingAddr) { printf("%s", buf); } } strncpy(g->country, &line[ma[3].rm_so], 2); if(last) { if(g->start < last->start) { *msg = apr_psprintf(pool, "wrong order/lines not sorted (line %d)", lines); (*errors)++; if(m_verbose) { fprintf(stderr, "line %d: wrong order/lines not sorted\n", lines); } } } if(plus) { line[ma[4].rm_eo] = '\0'; strncpy(g->c, &line[ma[4].rm_so], 500); } last = g; g++; } } } fclose(file); return geo; } int main(int argc, const char * const argv[]) { int errors = 0; int rc; int stat = 0; const char *ip = NULL; char *msg = NULL; qos_geo_t *geo; int size; const char *db = NULL; apr_table_t *entries; apr_pool_t *pool; const char *cmd = strrchr(argv[0], '/'); apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); entries = apr_table_make(pool, 100); if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv, "-d") == 0) { if (--argc >= 1) { db = *(++argv); } } else if(strcmp(*argv, "-ip") == 0) { if (--argc >= 1) { ip = *(++argv); } } else if(strcmp(*argv, "-s") == 0) { stat = 1; } else if(strcmp(*argv, "-l") == 0) { m_inject = 1; } else if(strcmp(*argv, "-v") == 0) { m_verbose = 1; } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } else { usage(cmd, 0); } argc--; argv++; } if(db == NULL) { usage(cmd, 0); } rc = nice(10); if(rc == -1) { fprintf(stderr, "ERROR, failed to change nice value: %s\n", strerror(errno)); } geo = qos_loadgeo(pool, db, &size, &msg, &errors); if(geo == NULL || msg != NULL) { if(msg) { char *p = msg; while(p[0]) { if(p[0] < 32) { p[0] = '.'; } p++; } } fprintf(stderr, "failed to load database: %s (total %d errors)\n", msg ? msg : "-", errors); exit(1); } if(m_inject) { exit(0); } if(ip) { qos_geo_t *pB; unsigned long search = qos_geo_str2long(pool, ip); printf("search %lu: ", search); pB = bsearch(&search, geo, size, sizeof(qos_geo_t), qos_geo_comp); if(pB) { printf("%s\n", pB->country); } else { printf("n/a\n"); } return 0; } // start reading from stdin { char prev; qos_geo_t *pB; apr_pool_t *tmp; char *line = calloc(1, MAX_LINE_BUFFER+1); regex_t preg; regex_t preg2; regmatch_t ma[MAX_REG_MATCH]; apr_pool_create(&tmp, NULL); if(regcomp(&preg, IPPATTERN, REG_EXTENDED)) { exit(1); } regcomp(&preg2, IPPATTERN2, REG_EXTENDED); while(fgets(line, MAX_LINE_BUFFER, stdin) != NULL) { int match = regexec(&preg, line, MAX_REG_MATCH, ma, 0); if(match != 0) { char *dx = strchr(line, ';'); if(dx && ((dx - line) <= 15)) { // file starts probably with ; => a qslog -pc file? match = regexec(&preg2, line, MAX_REG_MATCH, ma, 0); } } if(match == 0) { unsigned long search; prev = line[ma[1].rm_eo]; line[ma[1].rm_eo] = '\0'; search = qos_geo_str2long(tmp, &line[ma[1].rm_so]); apr_pool_clear(tmp); pB = bsearch(&search, geo, size, sizeof(qos_geo_t), qos_geo_comp); if(stat) { /* creates a single statistic entry for each country (used to collect requests per source country) */ if(pB) { qos_geo_stat_t *s = (qos_geo_stat_t *)apr_table_get(entries, pB->country); if(s == NULL) { s = apr_pcalloc(pool, sizeof(qos_geo_stat_t)); s->num = 0; s->c = pB->c; apr_table_addn(entries, apr_pstrdup(pool, pB->country), (char *)s); } s->num++; } } else { /* modifies each log line inserting the country code */ char cr = prev; char delw[2]; char delx[2]; delw[1] = '\0'; delw[0] = ' '; delx[1] = '\0'; delx[0] = ' '; if(line[ma[1].rm_eo+1] == ' ') { delx[0] = '\0'; } if(line[ma[1].rm_eo+1] == ';') { delx[0] = ';'; } if(prev <= CR) { prev = ' '; } if(prev == ' ') { delw[0] = '\0'; } if(prev == ';') { delw[0] = '\0'; delx[0] = ';'; } if(pB) { printf("%s%c%s%s%s%s", line, prev, delw, pB->country, delx, &line[ma[1].rm_eo+1]); } else { printf("%s%c%s--%s%s", line, prev, delw, delx, &line[ma[1].rm_eo+1]); } if(cr <= CR) { printf("\n"); } } } else { printf("%s", line); } fflush(stdout); } if(stat) { int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(entries)->elts; for(i = 0; i < apr_table_elts(entries)->nelts; i++) { qos_geo_stat_t *s = (qos_geo_stat_t *)entry[i].val; printf("%7.d %s %s\n", s->num, entry[i].key, s->c ? s->c : ""); } } } return 0; } mod_qos-11.36/tools/src/qsexec.c0000644000000000000020000002712513016363764015055 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Command line execution utility for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further details. * * Copyright (C) 2011-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is released under the GPL with the additional * exemption that compiling, linking, and/or using OpenSSL is allowed. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qsexec.c,v 1.27 2016/10/07 13:33:38 pbuchbinder Exp $"; /* system */ #include #include #include #include #include /* apr */ #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" #ifndef POSIX_MALLOC_THRESHOLD #define POSIX_MALLOC_THRESHOLD (10) #endif #define MAX_REG_MATCH 10 /* same as APR_SIZE_MAX which doesn't appear until APR 1.3 */ #define QSUTIL_SIZE_MAX (~((apr_size_t)0)) typedef struct { int rm_so; int rm_eo; } regmatch_t; static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } printf("%s %s- parses the data received via stdin and executes the defined command on a pattern match.\n", cmd, man ? "\\" : ""); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -e [-t :] [-c []]\n", man ? "" : "Usage: ", cmd); qs_man_print(man, " [-p] [-u ] \n"); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s reads log lines from stdin and searches for the defined pattern.\n", cmd); qs_man_print(man, "It executes the defined command string on pattern match.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -e \n"); if(man) printf("\n"); qs_man_print(man, " Specifes the search pattern causing an event which shall trigger the\n"); qs_man_print(man, " command.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -t :\n"); if(man) printf("\n"); qs_man_print(man, " Defines the number of pattern match within the the defined number of\n"); qs_man_print(man, " seconds in order to trigger the command execution. By default, every\n"); qs_man_print(man, " pattern match causes a command execution.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -c []\n"); if(man) printf("\n"); qs_man_print(man, " Pattern which clears the event counter. Executes optionally a command\n"); qs_man_print(man, " if an event command has been executed before.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Writes data also to stdout (for piped logging).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -u \n"); if(man) printf("\n"); qs_man_print(man, " Become another user, e.g. www-data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " \n"); if(man) printf("\n"); qs_man_print(man, " Defines the event command string where $0-$9 are substituted by the\n"); qs_man_print(man, " submatches of the regular expression.\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); } else { printf("Example:\n"); } qs_man_print(man, "Executes the deny.sh script providing the IP address of the\n"); qs_man_print(man, "client causing a mod_qos(031) messages whenever the log message\n"); qs_man_print(man, "appears 10 times within at most one minute:\n"); if(man) printf("\n"); qs_man_println(man, " ErrorLog \"|%s -e \\'mod_qos\\(031\\).*, c=([0-9a-zA-Z:.]*)\\' -t 10:60 \\'/bin/deny.sh $1\\'\"\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /* * Substitutes for $0-$9 within the matching string. * See ap_pregsub(). */ char *qs_pregsub(apr_pool_t *pool, const char *input, const char *source, size_t nmatch, regmatch_t pmatch[]) { const char *src = input; char *dest, *dst; char c; size_t no; int len; if(!source) { return NULL; } if(!nmatch) { return apr_pstrdup(pool, src); } /* First pass, find the size */ len = 0; while((c = *src++) != '\0') { if(c == '&') no = 0; else if (c == '$' && apr_isdigit(*src)) no = *src++ - '0'; else no = 10; if (no > 9) { /* Ordinary character. */ if (c == '\\' && (*src == '$' || *src == '&')) src++; len++; } else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) { if(QSUTIL_SIZE_MAX - len <= pmatch[no].rm_eo - pmatch[no].rm_so) { fprintf(stderr, "ERROR, integer overflow or out of memory condition"); return NULL; } len += pmatch[no].rm_eo - pmatch[no].rm_so; } } dest = dst = apr_pcalloc(pool, len + 1); /* Now actually fill in the string */ src = input; while ((c = *src++) != '\0') { if (c == '&') no = 0; else if (c == '$' && apr_isdigit(*src)) no = *src++ - '0'; else no = 10; if (no > 9) { /* Ordinary character. */ if (c == '\\' && (*src == '$' || *src == '&')) c = *src++; *dst++ = c; } else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) { len = pmatch[no].rm_eo - pmatch[no].rm_so; memcpy(dst, source + pmatch[no].rm_so, len); dst += len; } } *dst = '\0'; return dest; } int qs_regexec(pcre *preg, const char *string, apr_size_t nmatch, regmatch_t pmatch[]) { int rc; int options = 0; int *ovector = NULL; int small_ovector[POSIX_MALLOC_THRESHOLD * 3]; int allocated_ovector = 0; if (nmatch > 0) { if (nmatch <= POSIX_MALLOC_THRESHOLD) { ovector = &(small_ovector[0]); } else { ovector = (int *)malloc(sizeof(int) * nmatch * 3); if (ovector == NULL) { return 1; } allocated_ovector = 1; } } rc = pcre_exec(preg, NULL, string, (int)strlen(string), 0, options, ovector, nmatch * 3); if (rc == 0) rc = nmatch; /* All captured slots were filled in */ if (rc >= 0) { apr_size_t i; for (i = 0; i < (apr_size_t)rc; i++) { pmatch[i].rm_so = ovector[i*2]; pmatch[i].rm_eo = ovector[i*2+1]; } if (allocated_ovector) free(ovector); for (; i < nmatch; i++) pmatch[i].rm_so = pmatch[i].rm_eo = -1; return 0; } else { if (allocated_ovector) free(ovector); return rc; } } int main(int argc, const char * const argv[]) { const char *username = NULL; int nr = 0; char *line = calloc(1, MAX_LINE_BUFFER+1); apr_pool_t *pool; char *cmd = strrchr(argv[0], '/'); const char *command = NULL; const char *pattern = NULL; const char *clearcommand = NULL; const char *clearpattern = NULL; int executed = 0; pcre *preg; pcre *clearpreg; const char *errptr = NULL; int erroffset; regmatch_t regm[MAX_REG_MATCH]; time_t sec = 0; int threshold = 0; int counter = 0; time_t countertime; static int pass = 0; apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-e") == 0) { if (--argc >= 1) { pattern = *(++argv); } } else if(strcmp(*argv,"-u") == 0) { if (--argc >= 1) { username = *(++argv); } } else if(strcmp(*argv,"-c") == 0) { if (--argc >= 1) { clearpattern = *(++argv); if (argc >=1 && *argv[0] != '-') { clearcommand = *(++argv); argc--; } } } else if(argc >= 1 && strcmp(*argv,"-t") == 0) { if (--argc >= 1) { char *str = apr_pstrdup(pool, *(++argv)); char *tme = strchr(str, ':'); if(tme == NULL) { fprintf(stderr,"[%s]: ERROR, invalid number:sec format\n", cmd); exit(1); } tme[0] = '\0'; tme++; threshold = atoi(str); sec = atol(tme); if(threshold == 0 || sec == 0) { fprintf(stderr,"[%s]: ERROR, invalid number:sec format\n", cmd); exit(1); } } } else if(argc >= 1 && strcmp(*argv,"-p") == 0) { pass = 1; } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } else { command = *argv; } argc--; argv++; } if(pattern == NULL || command == NULL) { usage(cmd, 0); } qs_setuid(username, cmd); preg = pcre_compile(pattern, PCRE_DOTALL, &errptr, &erroffset, NULL); if(!preg) { fprintf(stderr, "ERROR, could not compile '%s' at position %d, reason: %s\n", pattern, erroffset, errptr); exit(1); } if(clearpattern) { clearpreg = pcre_compile(clearpattern, PCRE_DOTALL, &errptr, &erroffset, NULL); if(!clearpreg) { fprintf(stderr, "ERROR, could not compile '%s' at position %d, reason: %s\n", clearpattern, erroffset, errptr); exit(1); } } while(fgets(line, MAX_LINE_BUFFER, stdin) != NULL) { nr++; if(pass) { printf("%s", line); fflush(stdout); } if(clearpattern && (qs_regexec(clearpreg, line, MAX_REG_MATCH, regm) == 0)) { counter = 0; countertime = 0; if(clearcommand && executed) { char *replaced = qs_pregsub(pool, clearcommand, line, MAX_REG_MATCH, regm); if(!replaced) { fprintf(stderr, "[%s]: ERROR, failed to substitute" " submatches '%s' in (%s)\n", cmd, clearcommand, line); } else { int rc = system(replaced); } executed = 0; } } else if(qs_regexec(preg, line, MAX_REG_MATCH, regm) == 0) { char *replaced = qs_pregsub(pool, command, line, MAX_REG_MATCH, regm); if(!replaced) { fprintf(stderr, "[%s]: ERROR, failed to substitute" " submatches '%s' in (%s)\n", cmd, command, line); } else { counter++; if(counter == 1) { countertime = time(NULL); } if(counter >= threshold) { if(countertime + sec >= time(NULL)) { int rc = system(replaced); executed = 1; } countertime = 0; counter = 0; } } apr_pool_clear(pool); } } apr_pool_destroy(pool); return 0; } mod_qos-11.36/tools/src/qsgrep.c0000644000000000000020000002164413016363764015066 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Filter utility for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further details. * * Copyright (C) 2011-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is released under the GPL with the additional * exemption that compiling, linking, and/or using OpenSSL is allowed. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qsgrep.c,v 1.18 2016/10/07 13:33:38 pbuchbinder Exp $"; /* system */ #include #include #include #include #include #include /* apr */ #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" #ifndef POSIX_MALLOC_THRESHOLD #define POSIX_MALLOC_THRESHOLD (10) #endif #define MAX_REG_MATCH 10 /* same as APR_SIZE_MAX which doesn't appear until APR 1.3 */ #define QSUTIL_SIZE_MAX (~((apr_size_t)0)) typedef struct { int rm_so; int rm_eo; } regmatch_t; static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - prints matching patterns within a file.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -e -o []\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s is a simple tool to search patterns within files.\n", cmd); qs_man_print(man, "It uses regular expressions to find patterns and prints the\n"); qs_man_print(man, "submatches within a pre-defined format string.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -e \n"); if(man) printf("\n"); qs_man_print(man, " Specifes the search pattern.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -o \n"); if(man) printf("\n"); qs_man_print(man, " Defines the output string where $0-$9 are substituted by the\n"); qs_man_print(man, " submatches of the regular expression.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " \n"); if(man) printf("\n"); qs_man_print(man, " Defines the input file to process. %s reads from\n", cmd); qs_man_print(man, " from standard input if this parameter is omitted.\n"); printf("\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); qs_man_println(man, "Shows the IP addresses of clients causing mod_qos(031) messages):\n"); printf("\n"); } else { printf("Example (shows the IP addresses of clients causing mod_qos(031) messages):\n"); } qs_man_println(man, " %s -e 'mod_qos\\(031\\).*, c=([a-zA-Z0-9:.]*)' -o 'ip=$1' error_log\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /* * Substitutes for $0-$9 within the matching string. * See ap_pregsub(). */ char *qs_pregsub(apr_pool_t *pool, const char *input, const char *source, size_t nmatch, regmatch_t pmatch[]) { const char *src = input; char *dest, *dst; char c; size_t no; int len; if(!source) { return NULL; } if(!nmatch) { return apr_pstrdup(pool, src); } /* First pass, find the size */ len = 0; while((c = *src++) != '\0') { if(c == '&') no = 0; else if (c == '$' && apr_isdigit(*src)) no = *src++ - '0'; else no = 10; if (no > 9) { /* Ordinary character. */ if (c == '\\' && (*src == '$' || *src == '&')) src++; len++; } else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) { if(QSUTIL_SIZE_MAX - len <= pmatch[no].rm_eo - pmatch[no].rm_so) { fprintf(stderr, "ERROR, integer overflow or out of memory condition"); return NULL; } len += pmatch[no].rm_eo - pmatch[no].rm_so; } } dest = dst = apr_pcalloc(pool, len + 1); /* Now actually fill in the string */ src = input; while ((c = *src++) != '\0') { if (c == '&') no = 0; else if (c == '$' && apr_isdigit(*src)) no = *src++ - '0'; else no = 10; if (no > 9) { /* Ordinary character. */ if (c == '\\' && (*src == '$' || *src == '&')) c = *src++; *dst++ = c; } else if (no < nmatch && pmatch[no].rm_so < pmatch[no].rm_eo) { len = pmatch[no].rm_eo - pmatch[no].rm_so; memcpy(dst, source + pmatch[no].rm_so, len); dst += len; } } *dst = '\0'; return dest; } int qs_regexec(pcre *preg, const char *string, apr_size_t nmatch, regmatch_t pmatch[]) { int rc; int options = 0; int *ovector = NULL; int small_ovector[POSIX_MALLOC_THRESHOLD * 3]; int allocated_ovector = 0; if (nmatch > 0) { if (nmatch <= POSIX_MALLOC_THRESHOLD) { ovector = &(small_ovector[0]); } else { ovector = (int *)malloc(sizeof(int) * nmatch * 3); if (ovector == NULL) { return 1; } allocated_ovector = 1; } } rc = pcre_exec(preg, NULL, string, (int)strlen(string), 0, options, ovector, nmatch * 3); if (rc == 0) rc = nmatch; /* All captured slots were filled in */ if (rc >= 0) { apr_size_t i; for (i = 0; i < (apr_size_t)rc; i++) { pmatch[i].rm_so = ovector[i*2]; pmatch[i].rm_eo = ovector[i*2+1]; } if (allocated_ovector) free(ovector); for (; i < nmatch; i++) pmatch[i].rm_so = pmatch[i].rm_eo = -1; return 0; } else { if (allocated_ovector) free(ovector); return rc; } } int main(int argc, const char * const argv[]) { unsigned long nr = 0; char line[32768]; FILE *file = 0; apr_pool_t *pool; char *cmd = strrchr(argv[0], '/'); const char *out = NULL; const char *pattern = NULL; const char *filename = NULL; pcre *preg; const char *errptr = NULL; int erroffset; regmatch_t regm[MAX_REG_MATCH]; apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-e") == 0) { if (--argc >= 1) { pattern = *(++argv); } } else if(strcmp(*argv,"-o") == 0) { if (--argc >= 1) { out = *(++argv); } } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } else { filename = *argv; } argc--; argv++; } if(pattern == NULL || out == NULL) { usage(cmd, 0); } if(nice(10) == -1) { fprintf(stderr, "ERROR, failed to change nice value: %s\n", strerror(errno)); } preg = pcre_compile(pattern, PCRE_DOTALL, &errptr, &erroffset, NULL); if(!preg) { fprintf(stderr, "ERROR, could not compile '%s' at position %d, reason: %s\n", pattern, erroffset, errptr); exit(1); } if(filename) { file = fopen(filename, "r"); if(!file) { fprintf(stderr, "ERROR, could not open file\n"); exit(1); } } else { file = stdin; } while(fgets(line, sizeof(line), file) != NULL) { nr++; if(qs_regexec(preg, line, MAX_REG_MATCH, regm) == 0) { char *replaced = qs_pregsub(pool, out, line, MAX_REG_MATCH, regm); if(!replaced) { fprintf(stderr, "ERROR, failed to substitute submatches (line=%lu)\n", nr); } else { printf("%s\n", replaced); fflush(stdout); } apr_pool_clear(pool); } } if(filename) { fclose(file); } apr_pool_destroy(pool); return 0; } mod_qos-11.36/tools/src/qstail.c0000644000000000000020000001462013016363764015056 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Utilities for the quality of service module mod_qos. * * Shows the end of a log file beginning at the provided pattern. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2010-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qstail.c,v 1.18 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include "qs_util.h" #define BUFFER 2048 static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - an utility printing the end of a log file" " starting at the specified pattern.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -i -p \n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, " %s shows the end of a log file beginning with the line containing the\n", cmd); qs_man_print(man, " specified pattern. This may be used to show all lines which has been written\n"); qs_man_print(man, " after a certain event (e.g., server restart) or time stamp.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -i \n"); if(man) printf("\n"); qs_man_print(man, " Input file to read the data from.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p \n"); if(man) printf("\n"); qs_man_print(man, " Search pattern (literal string).\n"); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /* search the beginning of the line starting at the provided position */ static void qs_readline(long pos, FILE *f) { size_t len; long startpos = pos - BUFFER + 1; long readlen = BUFFER; char line[readlen + 1]; if(startpos < 0) { // we are at the beginning of the file startpos = 0; readlen = pos + 1; } fseek(f, startpos, SEEK_SET); len = fread(&line, 1, readlen, f); if(len > 0) { char *s = &line[len-1]; line[len] = '\0'; while((s >= line) && (s[0] != CR) && (s[0] != LF)) { s--; } if((s[0] == CR) || (s[0] == LF)) { s++; } printf("%s", s); } } static int qs_tail(const char *cmd, FILE *f, const char *pattern) { char *cont = NULL; long search_win_len = (strlen(pattern) * 2) + 32; char line[search_win_len + 10]; long pos = 0; size_t len; char *startpattern = NULL; fseek(f, 0L, SEEK_END); pos = ftell(f); while(pos > search_win_len) { int offset = 0; pos = pos - (search_win_len/2); fseek(f, pos, SEEK_SET); len = fread(&line, 1, search_win_len, f); if(len <= 0) { /* pattern not found / reached end */ return 1; } line[len] = '\0'; if((startpattern = strstr(line, pattern)) != NULL) { int containsend = 0; char *s = startpattern; char *end; offset = startpattern - line; /* search the beginning of the line */ while((s > line) && (s[0] != CR) && (s[0] != LF)) { s--; } if((s[0] != CR) && (s[0] != LF)) { // beginning of the line not in the buffer qs_readline(pos, f); } s++; end = startpattern; /* search the end of the line */ while((offset < search_win_len) && end[0] && end[0] != CR && end[0] != LF) { end++; offset++; } /* print the line containing the pattern */ if((end[0] == CR) || (end[0] == LF)) { end[0] = '\0'; printf("%s\n", s); containsend = 1; } else { printf("%s", s); } fseek(f, pos + offset, SEEK_SET); if(containsend) { // skip the line at the current position cont = fgets(line, sizeof(line), f); } else { cont = line; } if(cont) { while(fgets(line, sizeof(line), f) != NULL) { printf("%s", line); } } return 0; } } return 1; } int main(int argc, const char * const argv[]) { FILE *f; const char *filename = NULL; const char *pattern = NULL; char *cmd = strrchr(argv[0], '/'); int status = 0; if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-i") == 0) { if (--argc >= 1) { filename = *(++argv); } } else if(strcmp(*argv,"-p") == 0) { if (--argc >= 1) { pattern = *(++argv); } } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } argc--; argv++; } if(filename == NULL || pattern == NULL) { usage(cmd, 0); } if((f = fopen(filename, "r")) == NULL) { fprintf(stderr, "[%s]: ERROR, could not open file '%s'\n", cmd, filename); exit(1); } status = qs_tail(cmd, f, pattern); fclose(f); return status; } mod_qos-11.36/tools/src/qspng.c0000644000000000000020000005304413016363764014714 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qspng.c,v 1.21 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include //#include #include "qs_util.h" #include "char.h" #define HUGE_STRING_LEN 1024 #define X_SAMPLE_RATE 3 /* width */ #define X_COUNTS 60 * 24 / X_SAMPLE_RATE // 24 hours, every 3th sample /* height */ #define Y_COUNTS 100 /* border */ #define XY_BORDER 20 typedef struct { const char* param; const char* name; int r; int g; int b; } qs_png_elt_t; /* known graph types */ static const qs_png_elt_t qs_png_elts[] = { { "r/s", "requests per second", 20, 30, 130, }, { "req", "requests per minute", 20, 30, 130, }, { "b/s", "bytes per second (out)", 30, 45, 130 }, { "ib/s", "bytes per second (in)", 30, 45, 125 }, { "esco", "established connections per minute", 40, 95, 140 }, { "av", "average response time", 40, 95, 140 }, { "avms", "average response time in milliseconds", 45, 95, 135 }, { "<1s", "requests faster than 1 second", 35, 95, 180 }, { "1s", "requests faster or equal than 1 second", 35, 90, 180 }, { "2s", "requests with 2 seconds response time", 30, 85, 180 }, { "3s", "requests with 3 seconds response time", 25, 90, 180 }, { "4s", "requests with 4 seconds response time", 25, 95, 180 }, { "5s", "requests with 5 seconds response time", 15, 90, 180 }, { ">5s","requests slower than 5 seconds", 35, 90, 185 }, { "1xx","requets with HTTP status 1xx", 50, 70, 150 }, { "2xx","requets with HTTP status 2xx", 50, 70, 150 }, { "3xx","requets with HTTP status 3xx", 50, 70, 150 }, { "4xx","requets with HTTP status 4xx", 50, 70, 150 }, { "5xx","requets with HTTP status 5xx", 50, 70, 150 }, { "ip", "IP addresses", 55, 60, 150 }, { "usr","active users", 55, 66, 150 }, { "qV", "created VIP sessions", 55, 50, 155 }, { "qS", "session pass", 55, 75, 160 }, { "qD", "access denied", 55, 70, 170 }, { "qK", "conection closed", 55, 60, 145 }, { "qT", "dynamic keep-alive", 55, 55, 153 }, { "qL", "slow down", 55, 65, 140 }, { "qA", "connection aborts", 55, 50, 175 }, { "qs", "serialization", 55, 40, 175 }, { "qu", "start user tracking", 55, 45, 175 }, { "sl", "system load", 25, 60, 175 }, { "m", "free memory", 35, 90, 185 }, { NULL, NULL, 0, 0, 0 } }; typedef struct qs_png_conf_st { char *path; char *param; } qs_png_conf; /************************************************************************ * Functions ***********************************************************************/ /** * Read the stat_log data line by line * * @param s IN buffer to store line to * @param n IN buffer size * @param f IN file descriptor * * @return 1 on EOF, else 0 */ static int qs_png_getline(char *s, int n, FILE *f) { register int i = 0; while (1) { s[i] = (char) fgetc(f); if (s[i] == CR) { s[i] = fgetc(f); } if ((s[i] == 0x4) || (s[i] == LF) || (i == (n - 1))) { s[i] = '\0'; return (feof(f) ? 1 : 0); } ++i; } } /* png io callback (should write to buff/bio/bucket when using in apache) */ void lp_write_data(png_structp png_ptr, png_bytep data, png_size_t length) { FILE *f = png_get_io_ptr(png_ptr); fwrite(data, length, 1, f); } /* png io callback (not used) */ void lp_flush_data(png_structp png_ptr) { png_get_io_ptr(png_ptr); fprintf(stderr, "flush\n"); } /** * Writes a single char to the graph * * @param x IN x position * @param y IN y position * @param row_pointers IN start pointer (0/0) * @param n IN char to write */ static void qs_png_write_char(int x, int y, png_bytep *row_pointers, char n) { int ix, iy; int *f = &s_X[0][0]; switch(n) { case 'a': f = &s_a[0][0]; break; case 'b': f = &s_b[0][0]; break; case 'c': f = &s_c[0][0]; break; case 'd': f = &s_d[0][0]; break; case 'e': f = &s_e[0][0]; break; case 'f': f = &s_f[0][0]; break; case 'g': f = &s_g[0][0]; break; case 'h': f = &s_h[0][0]; break; case 'i': f = &s_i[0][0]; break; case 'j': f = &s_j[0][0]; break; case 'k': f = &s_k[0][0]; break; case 'l': f = &s_l[0][0]; break; case 'm': f = &s_m[0][0]; break; case 'n': f = &s_n[0][0]; break; case 'o': f = &s_o[0][0]; break; case 'p': f = &s_p[0][0]; break; case 'q': f = &s_q[0][0]; break; case 'r': f = &s_r[0][0]; break; case 's': f = &s_s[0][0]; break; case 't': f = &s_t[0][0]; break; case 'u': f = &s_u[0][0]; break; case 'v': f = &s_v[0][0]; break; case 'w': f = &s_w[0][0]; break; case 'x': f = &s_x[0][0]; break; case 'y': f = &s_y[0][0]; break; case 'z': f = &s_z[0][0]; break; case ' ': f = &s_SP[0][0]; break; case '_': f = &s_US[0][0]; break; case '(': f = &s_BRO[0][0]; break; case ')': f = &s_BRC[0][0]; break; case '<': f = &s_LT[0][0]; break; case '>': f = &s_GT[0][0]; break; case '-': f = &s_MI[0][0]; break; case '/': f = &s_SL[0][0]; break; case ';': f = &s_SC[0][0]; break; case ',': f = &s_CM[0][0]; break; case ':': f = &s_CO[0][0]; break; case '.': f = &s_DT[0][0]; break; case '\'': f = &s_SQ[0][0]; break; case 'A': f = &s_a[0][0]; break; case 'B': f = &s_b[0][0]; break; case 'C': f = &s_c[0][0]; break; case 'D': f = &s_d[0][0]; break; case 'E': f = &s_e[0][0]; break; case 'F': f = &s_f[0][0]; break; case 'G': f = &s_g[0][0]; break; case 'H': f = &s_h[0][0]; break; case 'I': f = &s_i[0][0]; break; case 'J': f = &s_j[0][0]; break; case 'K': f = &s_k[0][0]; break; case 'L': f = &s_l[0][0]; break; case 'M': f = &s_M[0][0]; break; case 'N': f = &s_n[0][0]; break; case 'O': f = &s_o[0][0]; break; case 'P': f = &s_p[0][0]; break; case 'Q': f = &s_q[0][0]; break; case 'R': f = &s_r[0][0]; break; case 'S': f = &s_s[0][0]; break; case 'T': f = &s_t[0][0]; break; case 'U': f = &s_u[0][0]; break; case 'V': f = &s_v[0][0]; break; case 'W': f = &s_w[0][0]; break; case 'X': f = &s_x[0][0]; break; case 'Y': f = &s_y[0][0]; break; case 'Z': f = &s_z[0][0]; break; case '0': f = &s_0[0][0]; break; case '1': f = &s_1[0][0]; break; case '2': f = &s_2[0][0]; break; case '3': f = &s_3[0][0]; break; case '4': f = &s_4[0][0]; break; case '5': f = &s_5[0][0]; break; case '6': f = &s_6[0][0]; break; case '7': f = &s_7[0][0]; break; case '8': f = &s_8[0][0]; break; case '9': f = &s_9[0][0]; break; } /* print the char matrix */ for(iy = 0; iy < S_H_MAX; iy++) { png_byte* row = row_pointers[y+iy]; for(ix = 0; ix < S_W_MAX; ix++) { png_byte* ptr = &(row[(x+ix)*4]); if(f[iy*S_W_MAX + ix] == 1) { /* foreground */ ptr[0] = 0; ptr[1] = 0; ptr[2] = 0; } else { /* background */ ptr[0] = 250; ptr[1] = 250; ptr[2] = 255; } } } } /** * Writes a single digit 0..9. * You should normally use either qs_png_write_int() or qs_png_write_int(). * * @param x IN x position * @param y IN y position * @param row_pointers IN start pointer (0/0) * @param n IN number to write */ static void qs_png_write_digit(int x, int y, png_bytep *row_pointers, int n) { char f = 'X'; if(n == 0) f = '0'; if(n == 1) f = '1'; if(n == 2) f = '2'; if(n == 3) f = '3'; if(n == 4) f = '4'; if(n == 5) f = '5'; if(n == 6) f = '6'; if(n == 7) f = '7'; if(n == 8) f = '8'; if(n == 9) f = '9'; qs_png_write_char(x, y, row_pointers, f); } /** * Writes a string to the graph. * * @param x IN x position * @param y IN y position * @param row_pointers IN start pointer (0/0) * @param n IN string to write */ static void qs_png_write_string(int x, int y, png_bytep *row_pointers, const char *n) { int i = 0; int offset = 0; while(n[i] != '\0') { qs_png_write_char(x+offset, y, row_pointers, n[i]); i++; offset = offset + S_W_MAX; } } /** * Writes a number (int) to the graph (1:1). * * @param x IN x position * @param y IN y position * @param row_pointers IN start pointer (0/0) * @param n IN number to write */ static void qs_png_write_int(int x, int y, png_bytep *row_pointers, int n) { char num_str[HUGE_STRING_LEN]; snprintf(num_str, sizeof(num_str), "%d", n); qs_png_write_string(x, y, row_pointers, num_str); } /** * Writes a number (long) to the graph using k,M for big numbers. * * @param x IN x position * @param y IN y position * @param row_pointers IN start pointer (0/0) * @param n IN string to write */ static void qs_png_write_long(int x, int y, png_bytep *row_pointers, long n) { char num_str[HUGE_STRING_LEN]; snprintf(num_str, sizeof(num_str), "%ld", n); if(n >= 1000) { snprintf(num_str, sizeof(num_str), "%ldk", n/1000); } if(n >= 1000000) { snprintf(num_str, sizeof(num_str), "%ldM", n/1000000); } qs_png_write_string(x, y, row_pointers, num_str); } /** * Labels the graph (min,max,title). * * @param width IN size (x axis) of the graph * @param height IN size (y axis) of the graph * @param border IN border size around the graph * @param row_pointers IN start pointer (0/0) * @param max IN max y value * @param name IN title */ static void qs_png_label(int width, int height, int border, png_bytep *row_pointers, long max, const char *name) { /* MAX */ int i; int step = height/5; int c = 5; for(i = 0; i < height; i = i + step) { qs_png_write_long(1, border - (S_W_MAX/2) + i, row_pointers, max/5*c); c--; } /* MIN */ qs_png_write_int(1, height + border - (S_W_MAX/2), row_pointers, 0); /* title */ { char buf[HUGE_STRING_LEN]; snprintf(buf, sizeof(buf), "%s", name); qs_png_write_string(XY_BORDER, XY_BORDER/2-S_H_MAX/2, row_pointers, buf); } } static void lp_init(int width, int height, int border, png_bytep **start) { png_bytep *row_pointers; int b_width = width + (2 * border); int b_height = height + (2 * border); int x, y; /* alloc memory */ row_pointers = (png_bytep*) malloc(sizeof(png_bytep) * b_height); for(y=0; y 8)) { char *e; p=p+strlen(name); e = strchr(p,';'); if(e) e[0] = '\0'; e = strchr(p, '.'); /** sl uses fp value */ if(e) e[0] = '\0'; tmp[sample-1] = atol(p); } else { tmp[sample-1] = 0; } /* hour (stat_log time format: %d.%m.%Y %H:%M:%S (19 char)) */ p = strchr(line, ';'); if(p && (p-line == 19 )) { p = p - 6; p[0] = '\0'; p = p - 2; hours[i] = atoi(p); } /* use the defined sample rate */ if(sample == X_SAMPLE_RATE) { int j; int max_value = 0; for(j = 0; j < X_SAMPLE_RATE; j++) { req[i] = req[i] + tmp[j]; if(max_value < tmp[j]) { max_value = tmp[j]; } } max_req[i] = max_value; if(max_req[i] > peak) peak = max_req[i]; /* build average */ req[i] = req[i] / X_SAMPLE_RATE; sample = 1; i++; /* and store the current date (%d.%m.%Y (10 char)) if the first value is at 00h */ if(hours[i] == 0 && i == 1) { p = strchr(line, ' '); if(p && (p-line == 10)) { p[0] = '\0'; strcpy(date_str, line); } } } else { sample++; } } /* calculate y axis scaling (1:1 are heigth pixels) */ if(peak < 10) { scale = 0.1; } else { while((peak / scale) > height) { if(scale < 8) { scale = scale * 2; } else { if(scale == 8) { scale = 10; } else { scale = scale * 10; } } } } /* draw the curve */ for(x=0; x -p -o [-10]\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s is a tool to generate png (portable network graphics)\n", cmd); qs_man_print(man, "raster images files from semicolon separated data generated by the\n"); qs_man_print(man, "qslog utility. It reads up to the first 1440 entries (24 hours)\n"); qs_man_print(man, "and prints a graph using the values defined by the 'parameter' \n"); qs_man_print(man, "name.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -i \n"); if(man) printf("\n"); qs_man_print(man, " Input file to read data from.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p \n"); if(man) printf("\n"); qs_man_print(man, " Parameter name, e.g. r/s or usr.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -o \n"); if(man) printf("\n"); qs_man_print(man, " Output file name, e.g. stat.png.\n"); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qslog(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("\n"); printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } int main(int argc, char **argv) { int y; int width, height, b_width, b_height; png_byte color_type; png_byte bit_depth; int scale; png_structp png_ptr; png_infop info_ptr; png_bytep *row_pointers; char *infile = NULL; FILE *f; FILE *stat_log; char *cmd = strrchr(argv[0], '/'); const char *param = NULL; const char *name = ""; char *out = NULL; int c_r = 20; int c_g = 50; int c_b = 175; const qs_png_elt_t* elt; if(cmd == NULL) { cmd = argv[0]; } else { cmd++; } while(argc >= 1) { if(strcmp(*argv,"-i") == 0) { if (--argc >= 1) { infile = *(++argv); } } else if(strcmp(*argv,"-p") == 0) { if (--argc >= 1) { param = *(++argv); name = param; } } else if(strcmp(*argv,"-o") == 0) { if (--argc >= 1) { out = *(++argv); } } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } argc--; argv++; } if(infile == NULL || param == NULL || out == NULL) usage(cmd, 0); for(elt = qs_png_elts; elt->param != NULL ; ++elt) { if(strcmp(elt->param, param) == 0) { name = elt->name; c_r = elt->r; c_g = elt->g; c_b = elt->b; } } stat_log = fopen(infile, "r"); if(stat_log == NULL) { fprintf(stderr,"[%s]: ERROR, could not open input file <%s>\n", cmd, infile); exit(1); } f = fopen(out, "wb"); if(f == NULL) { fprintf(stderr,"[%s]: ERROR, could not open output file <%s>\n", cmd, out); exit(1); } png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL); if(png_ptr == NULL) { fprintf(stderr,"[%s]: ERROR, could not create png struct\n", cmd); exit(1); } info_ptr = png_create_info_struct(png_ptr); if(info_ptr == NULL) { fprintf(stderr,"[%s]: ERROR, could not create png information struct\n", cmd); exit(1); } if(setjmp(png_jmpbuf(png_ptr))) { fprintf(stderr,"[%s]: ERROR, could not init png struct\n", cmd); exit(1); } png_set_write_fn(png_ptr, f, lp_write_data, NULL); /* write header */ if(setjmp(png_jmpbuf(png_ptr))) { fprintf(stderr,"[%s]: ERROR, could not write png header\n", cmd); exit(1); } color_type = PNG_COLOR_TYPE_RGB_ALPHA; bit_depth = 8; width = X_COUNTS; height = Y_COUNTS; b_width = width + (2 * XY_BORDER); b_height = height + (2 * XY_BORDER); png_set_IHDR(png_ptr, info_ptr, b_width, b_height, bit_depth, color_type, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE); png_write_info(png_ptr, info_ptr); /* write bytes */ if(setjmp(png_jmpbuf(png_ptr))) { fprintf(stderr,"[%s]: ERROR, could not write png data\n", cmd); exit(1); } /* alloc and background */ lp_init(width, height, XY_BORDER, &row_pointers); /* paint */ { char buf[HUGE_STRING_LEN]; snprintf(buf, sizeof(buf), ";%s;", param); scale = qs_png_draw(width, height, XY_BORDER, row_pointers, stat_log, buf, c_r, c_g, c_b); } /* min/max/title label */ qs_png_label(width, height, XY_BORDER, row_pointers, scale, name); /* done, write image */ png_write_image(png_ptr, row_pointers); /* end write */ if(setjmp(png_jmpbuf(png_ptr))) { fprintf(stderr,"[%s]: ERROR, could not write png data\n", cmd); exit(1); } png_write_end(png_ptr, NULL); /* cleanup heap allocation */ for(y=0; y #include #include #include #include #include #include /* apr */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //#include /* OpenSSL */ #include #include "qs_util.h" #define MAX_LINE 32768 /* 2mb */ #define MAX_BODY_BUFFER 2097152 #define CR 13 #define LF 10 typedef enum { QS_UT_PATH, QS_UT_QUERY } qs_url_type_e; #define QS_PCRE_RESERVED "{}[]()^$.|*+?\\-" //#define QS_PCRE_RESERVED "{}[]()^$.|*+?\"'\\-" /* reserved (to be escaped): {}[]()^$.|*+?\- */ #define QS_UNRESERVED "a-zA-Z0-9-\\._~% " #define QS_GEN ":/\\?#\\[\\]@" #define QS_SUB "!$&'\\(\\)\\*\\+,;=" #define QS_SUB_S "!$&\\(\\)\\*\\+,;=" #define QS_SIMPLE_PATH_PCRE "(/[a-zA-Z0-9\\-_]+)+[/]?\\.?[a-zA-Z]{0,4}" #define QS_B64 "([a-z]+[a-z0-9]*[A-Z]+[A-Z0-9]*)" #define QS_HX "([A-F0-9]*[A-F]+[0-9]+[A-F0-9]*)" #define QS_OVECCOUNT 3 /* request line detection */ #define QOSC_REQ "(OPTIONS|GET|HEAD|POST|PUT|DELETE|TRACE|CONNECT|PROPFIND|PROPPATCH|MKCOL|COPY|MOVE|LOCK|UNLOCK|VERSION-CONTROL|REPORT|CHECKOUT|CHECKIN|UNCHECKOUT|MKWORKSPACE|UPDATE|LABEL|MERGE|BASELINE-CONTROL|MKACTIVITY|ORDERPATCH|ACL|PATCH|SEARCH|BCOPY|BDELETE|BMOVE|BPROPFIND|BPROPPATCH|NOTIFY|POLL|SUBSCRIBE|UNSUBSCRIBE|X-MS-ENUMATTS|RPC_IN_DATA|RPC_OUT_DATA) /[\x20-\x21\x23-\xFF]* HTTP/" pcre *pcre_b64; pcre *pcre_hx; pcre *pcre_simple_path; #define QOS_DEC_MODE_FLAGS_URL 0x00 #define QOS_DEC_MODE_FLAGS_HTML 0x01 #define QOS_DEC_MODE_FLAGS_UNI 0x02 #define QOS_DEC_MODE_FLAGS_ANSI 0x04 /* global variables to store settings */ static int m_mode = QOS_DEC_MODE_FLAGS_URL; static int m_base64 = 5; static int m_verbose = 1; static int m_path_depth = 1; static int m_redundant = 1; static int m_query_pcre = 0; static int m_query_multi_pcre = 0; static int m_query_o_pcre = 0; static int m_query_single_pcre = 0; static int m_query_len_pcre = 10; static int m_exit_on_error = 0; static int m_handler = 0; static pcre *m_req_regex = NULL; static int m_log_req_regex = 0; static const char *m_pfx = NULL; static const char *m_filter = NULL; typedef struct { pcre *pcre; pcre_extra *extra; char *rule; char *path; char *query_m_string; char *query_m_pcre; int fragment; } qs_rule_t; /* openssl stack compare function used to sort the rules */ int STACK_qs_cmp(const char * const *_pA, const char * const *_pB) { qs_rule_t *pA=*(( qs_rule_t **)_pA); qs_rule_t *pB=*(( qs_rule_t **)_pB); return strcmp(pA->rule,pB->rule); } /* compiles a pcre (exit on error) */ static pcre *qos_pcre_compile(char *pattern, int option) { const char *errptr = NULL; int erroffset; pcre *pcre = pcre_compile(pattern, PCRE_DOTALL|option, &errptr, &erroffset, NULL); if(pcre == NULL) { fprintf(stderr, "ERROR, rule <%s> could not compile pcre at position %d," " reason: %s\n", pattern, erroffset, errptr); exit(1); } return pcre; } /* tries to detect base64/hex patterns (mix of upper and lower case characters) */ static char *qos_detect_b64(char *line, int silent) { int ovector[QS_OVECCOUNT]; int rc_c = pcre_exec(pcre_b64, NULL, line, strlen(line), 0, 0, ovector, QS_OVECCOUNT); if(rc_c >= 0) { if((m_verbose > 1) && !silent) printf(" B64: %.*s\n", ovector[1] - ovector[0], &line[ovector[0]]); return &line[ovector[0]]; } rc_c = pcre_exec(pcre_hx, NULL, line, strlen(line), 0, 0, ovector, QS_OVECCOUNT); if(rc_c >= 0) { if((m_verbose > 1) && !silent) printf(" HX: %.*s\n", ovector[1] - ovector[0], &line[ovector[0]]); return &line[ovector[0]]; } return NULL; } /* escape double quotes and backslash (to be used for Apache directive) */ static char *qs_apache_escape(apr_pool_t *pool, const char *line) { char *ret = apr_pcalloc(pool, strlen(line) * 4); int i = 0; const char *in = line; while(in && in[0]) { if(in[0] == '"') { ret[i] = '\\'; i++; ret[i] = 'x'; i++; ret[i] = '2'; i++; ret[i] = '2'; i++; } else if(in[0] == '\\' && in[1] == '\\') { ret[i] = '\\'; i++; ret[i] = 'x'; i++; ret[i] = '5'; i++; ret[i] = 'c'; i++; in++; } else { ret[i] = (char)in[0]; i++; } in++; } return ret; } /* escape a string in order to be used withn a pcre */ static char *qos_escape_pcre(apr_pool_t *pool, char *line) { int i = 0; unsigned char prev = 0; unsigned char *in = (unsigned char *)line; char *ret = apr_pcalloc(pool, strlen(line) * 4); int reti = 0; if(strlen(line) == 0) return ""; while(in[i]) { if(strchr(QS_PCRE_RESERVED, in[i]) != NULL) { if(prev && (prev == '\\')) { /* already escaped */ ret[reti] = in[i]; reti++; } else if(prev && (in[i] == '\\') && (strchr(QS_PCRE_RESERVED, in[i+1]) != NULL)) { /* escape char */ ret[reti] = in[i]; reti++; } else { ret[reti] = '\\'; reti++; ret[reti] = in[i]; reti++; } } else if((in[i] < ' ') || (in[i] > '~')) { sprintf(&ret[reti], "\\x%02x", in[i]); reti = reti + 4; } else { ret[reti] = in[i]; reti++; } prev = in[i]; i++; } return ret; } /* helper for url decoding */ static int qos_hex2c(const char *x) { int i, ch; ch = x[0]; if (isdigit(ch)) { i = ch - '0'; }else if (isupper(ch)) { i = ch - ('A' - 10); } else { i = ch - ('a' - 10); } i <<= 4; ch = x[1]; if (isdigit(ch)) { i += ch - '0'; } else if (isupper(ch)) { i += ch - ('A' - 10); } else { i += ch - ('a' - 10); } return i; } static int qos_ishex(char x) { if((x >= '0') && (x <= '9')) return 1; if((x >= 'a') && (x <= 'f')) return 1; if((x >= 'A') && (x <= 'F')) return 1; return 0; } /* url decoding */ static int qos_unescaping(char *x) { int i, j, ch; if (x[0] == '\0') return 0; for (i = 0, j = 0; x[i] != '\0'; i++, j++) { ch = x[i]; if(ch == '%' && qos_ishex(x[i + 1]) && qos_ishex(x[i + 2])) { ch = qos_hex2c(&x[i + 1]); i += 2; } else if((m_mode & QOS_DEC_MODE_FLAGS_UNI) && ((ch == '%') || (ch == '\\')) && ((x[i + 1] == 'u') || (x[i + 1] == 'U')) && qos_ishex(x[i + 2]) && qos_ishex(x[i + 3]) && qos_ishex(x[i + 4]) && qos_ishex(x[i + 5])) { /* unicode %uXXXX */ ch = qos_hex2c(&x[i + 4]); if((ch > 0x00) && (ch < 0x5f) && ((x[i + 2] == 'f') || (x[i + 2] == 'F')) && ((x[i + 3] == 'f') || (x[i + 3] == 'F'))) { ch += 0x20; } i += 5; } else if (ch == '\\' && (x[i + 1] == 'x') && qos_ishex(x[i + 2]) && qos_ishex(x[i + 3])) { ch = qos_hex2c(&x[i + 2]); i += 3; } else if (ch == '+') { ch = ' '; } x[j] = ch; } x[j] = '\0'; if(strlen(x) != j) { fprintf(stderr, "WARNING, found escaped null char %s\n", x); } return j; } static int qos_fgetline(char *s, int n, FILE *f) { register int i = 0; while (1) { s[i] = (char) fgetc(f); if (s[i] == CR) { s[i] = fgetc(f); } if ((s[i] == 0x4) || (s[i] == LF) || (i == (n - 1))) { s[i] = '\0'; return (feof(f) ? 1 : 0); } ++i; } } /* init global pcre */ static void qos_init_pcre() { char buf[1024]; sprintf(buf, "%s{%d,}", QS_B64, m_base64); pcre_b64 = qos_pcre_compile(buf, 0); sprintf(buf, "%s{%d,}", QS_HX, m_base64); pcre_hx = qos_pcre_compile(buf, 0); pcre_simple_path = qos_pcre_compile("^"QS_SIMPLE_PATH_PCRE"$", 0); m_req_regex = qos_pcre_compile(QOSC_REQ, 0); } static void usage(char *cmd, int man) { char space[1024]; memset(space, ' ', 1024); space[strlen(cmd)] = '\0'; if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - an utility to generate mod_qos request line rules out from\n", cmd); qs_man_print(man, "existing access/audit log data.\n"); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -i [-c ] [-d ] [-h] [-b ]\n", man ? "" : "Usage: ", cmd); qs_man_print(man, " %s [-p|-s|-m|-o] [-l ] [-n] [-e] [-u 'uni']\n", space); qs_man_print(man, " %s [-k ] [-t] [-f ] [-v 0|1|2]\n", space); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, " mod_qos implements a request filter which validates each request\n"); qs_man_print(man, " line. The module supports both, negative and positive security\n"); qs_man_print(man, " model. The QS_Deny* directives are used to specify request line\n"); qs_man_print(man, " patterns which are not allowed to access the server (negative\n"); qs_man_print(man, " security model / blacklist). These rules are used to restrict\n"); qs_man_print(man, " access to certain resources which should not be available to\n"); qs_man_print(man, " users or to protect the server from malicious patterns. The\n"); qs_man_print(man, " QS_Permit* rules implement a positive security model (whitelist).\n"); qs_man_print(man, " These directives are used to define allowed request line patterns.\n"); qs_man_print(man, " Request which do not match any of thses patterns are not allowed\n"); qs_man_print(man, " to access the server.\n"); if(man) printf("\n\n"); qs_man_print(man, " %s is an audit log analyzer used to generate filter\n", cmd); qs_man_print(man, " rules (perl compatible regular expressions) which may be used\n"); qs_man_print(man, " by mod_qos to deny access for suspect requests (QS_PermitUri rules).\n"); qs_man_print(man, " It parses existing audit log files in order to generate request\n"); qs_man_print(man, " patterns covering all allowed requests.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -i \n"); if(man) printf("\n"); qs_man_print(man, " Input file containing request URIs.\n"); qs_man_print(man, " The URIs for this file have to be extracted from the servers\n"); qs_man_print(man, " access logs. Each line of the input file contains a request\n"); qs_man_print(man, " URI consiting of a path and and query.\n"); printf("\n"); printf(" Example:\n"); qs_man_println(man, " /aaa/index.do\n"); qs_man_println(man, " /aaa/edit?image=1.jpg\n"); qs_man_println(man, " /aaa/image/1.jpg\n"); qs_man_println(man, " /aaa/view?page=1\n"); qs_man_println(man, " /aaa/edit?document=1\n"); printf("\n"); qs_man_print(man, " These access log data must include current request URIs but\n"); qs_man_print(man, " also request lines from previous rule generation steps. It\n"); qs_man_print(man, " must also include request lines which cover manually generated\n"); qs_man_print(man, " rules.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -c \n"); if(man) printf("\n"); qs_man_print(man, " mod_qos configuration file defining QS_DenyRequestLine and\n"); qs_man_print(man, " QS_PermitUri directives.\n"); qs_man_print(man, " %s generates rules from access log data automatically.\n", cmd); qs_man_print(man, " Manually generated rules (QS_PermitUri) may be provided from\n"); qs_man_print(man, " this file. Note: each manual rule must be represented by a\n"); qs_man_print(man, " request URI in the input data (-i) in order to make sure not\n"); qs_man_print(man, " to be deleted by the rule optimisation algorithm.\n"); qs_man_print(man, " QS_Deny* rules from this file are used to filter request lines\n"); qs_man_print(man, " which should not be used for whitelist rule generation.\n"); printf("\n"); printf(" Example:\n"); qs_man_println(man, " # manually defined whitelist rule:\n"); qs_man_println(man, " QS_PermitUri +view deny \"^[/a-zA-Z0-9]+/view\\?(page=[0-9]+)?$\"\n"); qs_man_println(man, " # filter unwanted request line patterns:\n"); qs_man_println(man, " QS_DenyRequestLine +printable deny \".*[\\x00-\\x19].*\"\n"); printf("\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -d \n"); if(man) printf("\n"); qs_man_print(man, " Depth (sub locations) of the path string which is defined as a\n"); qs_man_print(man, " literal string. Default is 1.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -h\n"); if(man) printf("\n"); qs_man_print(man, " Always use a string representing the handler name in the path even\n"); qs_man_print(man, " the url does not have a query. See also -d option.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -b \n"); if(man) printf("\n"); qs_man_print(man, " Replaces url pattern by the regular expression when detecting\n"); qs_man_print(man, " a base64/hex encoded string. Detecting sensibility is defined by a\n"); qs_man_print(man, " numeric value. You should use values higher than 5 (default)\n"); qs_man_print(man, " or 0 to disable this function.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Repesents query by pcre only (no literal strings).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -s\n"); if(man) printf("\n"); qs_man_print(man, " Uses one single pcre for the whole query string.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -m\n"); if(man) printf("\n"); qs_man_print(man, " Uses one pcre for multipe query values (recommended mode).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -o\n"); if(man) printf("\n"); qs_man_print(man, " Does not care the order of query parameters.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -l \n"); if(man) printf("\n"); qs_man_print(man, " Outsizes the query length by the defined length ({0,size+len}),\n"); qs_man_print(man, " default is %d.\n", m_query_len_pcre); if(man) printf("\n.TP\n"); qs_man_print(man, " -n\n"); if(man) printf("\n"); qs_man_print(man, " Disables redundant rules elimination.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -e\n"); if(man) printf("\n"); qs_man_print(man, " Exit on error.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -u 'uni'\n"); if(man) printf("\n"); qs_man_print(man, " Enables additional decoding methods. Use the same settings as you have\n"); qs_man_print(man, " used for the QS_Decoding directive.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Repesents query by pcre only (no literal strings).\n"); qs_man_print(man, " Determines the worst case performance for the generated whitelist\n"); qs_man_print(man, " by applying each rule for each request line (output is real time\n"); qs_man_print(man, " filter duration per request line in milliseconds).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -k \n"); if(man) printf("\n"); qs_man_print(man, " Prefix used to generate rule identifiers (QSF by default).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -t\n"); if(man) printf("\n"); qs_man_print(man, " Calculates the maximal latency per request (worst case) using the\n"); qs_man_print(man, " generated rules.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -f \n"); if(man) printf("\n"); qs_man_print(man, " Filters the input by the provided path (prefix) only processing\n"); qs_man_print(man, " matching lines.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -v \n"); if(man) printf("\n"); qs_man_print(man, " Verbose mode. (0=silent, 1=rule source, 2=detailed). Default is 1.\n"); qs_man_print(man, " Don't use rules you haven't checked the request data used to\n"); qs_man_print(man, " generate it! Level 1 is highly recommended (as long as you don't\n"); qs_man_print(man, " have created the log data using your own web crawler).\n"); printf("\n"); if(man) { printf(".SH OUTPUT\n"); } else { printf("Output\n"); } qs_man_print(man, " The output of %s is written to stdout. The output\n", cmd); qs_man_print(man, " contains the generated QS_PermitUri directives but also\n"); qs_man_print(man, " information about the source which has been used to generate\n"); qs_man_print(man, " these rules. It is very important to check the validity of\n"); qs_man_print(man, " each request line which has been used to calculate the\n"); qs_man_print(man, " QS_PermitUri rules. Each request line which has been used to\n"); qs_man_print(man, " generate a new rule is shown in the output prefixed by\n"); qs_man_print(man, " \"ADD line :\". These request lines should be\n"); qs_man_print(man, " stored and reused at any later rule generation (add them to\n"); qs_man_print(man, " the URI input file). The subsequent line shows the generated\n"); qs_man_print(man, " rule.\n"); qs_man_print(man, " At the end of data processing a list of all generated\n"); qs_man_print(man, " QS_PermitUri rules is shown. These directives may be used\n"); qs_man_print(man, " withn the configuration file used by mod_qos.\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); } else { printf("Sample Usage and Output\n"); } qs_man_println(man, " ./%s -i loc.txt -c httpd.conf -m -e\n", cmd); qs_man_println(man, " ...\n"); qs_man_println(man, " # ADD line 1: /aaa/index.do\n"); qs_man_println(man, " # 003 ^(/[a-zA-Z0-9\\-_]+)+[/]?\\.?[a-zA-Z]{0,4}$\n"); qs_man_println(man, " # ADD line 3: /aaa/view?page=1\n"); qs_man_println(man, " # --- ^[/a-zA-Z0-9]+/view\\?(page=[0-9]+)?$\n"); qs_man_println(man, " # ADD line 4: /aaa/edit?document=1\n"); qs_man_println(man, " # 004 ^[/a-zA-Z]+/edit\\?((document)(=[0-9]*)*[&]?)*$\n"); qs_man_println(man, " # ADD line 5: /aaa/edit?image=1.jpg\n"); qs_man_println(man, " # 005 ^[/a-zA-Z]+/edit\\?((image)(=[0-9\\.a-zA-Z]*)*[&]?)*$\n"); qs_man_println(man, " ...\n"); qs_man_println(man, " QS_PermitUri +QSF001 deny \"^[/a-zA-Z]+/edit\\?((document|image)(=[0-9\\.a-zA-Z]*)*[&]?)*$\"\n"); qs_man_println(man, " QS_PermitUri +QSF002 deny \"^[/a-zA-Z0-9]+/view\\?(page=[0-9]+)?$\"\n"); qs_man_println(man, " QS_PermitUri +QSF003 deny \"^(/[a-zA-Z0-9\\-_]+)+[/]?\\.?[a-zA-Z]{0,4}$\"\n"); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("mod_qos %s\n", man_version); printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /* worker struct, used for parallel processing */ typedef struct { apr_pool_t *pool; apr_table_t *rules; apr_table_t *rules_url; int from; int to; } qs_worker_t; /* determines, if a rule is really required */ static apr_table_t *qos_get_used(apr_pool_t *pool, apr_table_t *rules, apr_table_t *rules_url, int from, int to) { apr_table_t *used = apr_table_make(pool, 1); int j; for(j = from; j < to; j++) { int l; apr_table_entry_t *linee = (apr_table_entry_t *)apr_table_elts(rules_url)->elts; if(m_verbose) { printf("[%d]", j); fflush(stdout); } for(l = 0; l < apr_table_elts(rules_url)->nelts; l++) { char *line = linee[l].key; int i; int match = 0; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { if(i != j) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; if(pcre_exec(rs->pcre, rs->extra, line, strlen(line), 0, 0, NULL, 0) >= 0) { match = 1; break; } } } if(!match) { /* no match, rule j is required */ apr_table_add(used, entry[j].key, "+"); } } } return used; } static void *qos_worker(void *argv) { qs_worker_t *wt = argv; return qos_get_used(wt->pool, wt->rules, wt->rules_url, wt->from, wt->to); } /* get the characters used withn the string in order to define a pcre */ static char *qos_2pcre(apr_pool_t *pool, const char *line) { int hasA = 0; int hasD = 0; int hasE = 0; int hasB = 0; int i = 0; unsigned char *in = (unsigned char *)line; char *ret = apr_pcalloc(pool, strlen(line) * 6); int reti = 0; char *existing = ""; if(strlen(line) == 0) return ""; while(in[i]) { if(isdigit(in[i])) { if(!hasD) { hasD = 1; strcpy(&ret[reti], "0-9"); reti = reti + 3; } } else if(isalpha(in[i])) { if(!hasA) { hasA = 1; strcpy(&ret[reti], "a-zA-Z"); reti = reti + 6; } } else if(in[i] == '\\') { if(!hasE) { hasE = 1; strcpy(&ret[reti], "\\\\"); reti = reti + 2; } } else if(in[i] == '-') { if(!hasB) { hasB = 1; strcpy(&ret[reti], "\\-"); reti = reti + 2; } } else if(in[i] == '\0') { char *ck = apr_psprintf(pool, "#\\x%02x#", in[i]); if(strstr(existing, ck) == NULL) { sprintf(&ret[reti], "\\x%02x", in[i]); reti = reti + 4; existing = apr_pstrcat(pool, existing, ck, NULL); } } else if(strchr(ret, in[i]) == NULL) { if(strchr(QS_PCRE_RESERVED, in[i]) != NULL) { ret[reti] = '\\'; reti++; ret[reti] = in[i]; reti++; } else if((in[i] < ' ') || (in[i] > '~')) { char *ck = apr_psprintf(pool, "#\\x%02x#", in[i]); if(strstr(existing, ck) == NULL) { sprintf(&ret[reti], "\\x%02x", in[i]); reti = reti + 4; existing = apr_pstrcat(pool, existing, ck, NULL); } } else { ret[reti] = in[i]; reti++; } } i++; } if(strlen(ret) == 0) return NULL; ret[reti] = '\0'; return ret; } /* check for the pattern "p" in "r" using the delimter "d", returns 1 if it is in the string */ static int qos_checkstr(apr_pool_t *pool, char *r, char *d, char *p) { /* * r = ..|p|.. * r = p|... * r = ..|p * r = p */ char *check1 = apr_pstrcat(pool, d, p, d, NULL); char *check2 = apr_pstrcat(pool, p, d, NULL); char *check3 = apr_pstrcat(pool, d, p, NULL); if(strstr(r, check1) != NULL) { return 1; } if(strncmp(r, check2, strlen(check2)) == 0) { return 1; } if(strlen(r) > strlen(check3)) { if((strncmp(&r[strlen(r)-strlen(check3)], check3, strlen(check3)) == 0)) { return 1; } } if(strcmp(r, p) == 0) { return 1; } return 0; } /* add the string "n" to "o" using the delimiter "d" (only if not already available */ static char *qos_addstr(apr_pool_t *pool, char *o, char *d, char *n) { char *p = apr_pstrdup(pool, n); char *r = o; if(n == NULL) return o; while(p && p[0]) { char *this = p; char *next = strchr(p, d[0]); /* \| */ while(next) { if((next > this) && (next[-1] == '\\')) { next++; next = strchr(next, d[0]); } else { break; } } if(next == NULL) { p = NULL; } else { next[0] = '\0'; next++; p = next; } if(!qos_checkstr(pool, r, d, this)) { r = apr_pstrcat(pool, r, d, this, NULL); } } return r; } /* create a name=pcre string like this: ((s1|s2)(=[]*)*[&]?)*" */ static char *qos_qqs(apr_pool_t *pool, char *string, char *query_pcre, int singleEq, int hasEq, int startAmp) { char *se = NULL; char *s = ""; if(startAmp) s = "[&]?"; if(singleEq) { se = "(=[&]?)*"; } if(strlen(query_pcre) > 0) { return apr_pstrcat(pool, s, "((", string, ")(=[", qos_2pcre(pool, query_pcre), "]*)*[&]?)*", se, NULL); } else { if(hasEq && !singleEq) { se = "(=[&]?)*"; return apr_pstrcat(pool, s, "(((", string, ")[&]?)*", se, ")*", NULL); } return apr_pstrcat(pool, s, "((", string, ")[&]?)*", se, NULL); } } /* tries to optimize the rules by merging all query into one single pcre matching all values */ static void qos_query_optimization(apr_pool_t *pool, apr_table_t *rules) { apr_table_t *delete = apr_table_make(pool, 1); apr_table_t *checked_path = apr_table_make(pool, 1); apr_table_t *new = apr_table_make(pool, 1); int i, j; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { char *rule_str = entry[i].key; qs_rule_t *r = (qs_rule_t *)entry[i].val; if(!r->fragment && r->path && (apr_table_get(checked_path, r->path) == NULL)) { int merged = 0; char *query_m_string = r->query_m_string == NULL ? "" : r->query_m_string; char *query_m_pcre = r->query_m_pcre == NULL ? "" : r->query_m_pcre; if(m_verbose > 1) printf(" search for path %s (%s)\n", r->path, rule_str); if(m_verbose > 1) printf(" . %s %s\n", query_m_string, query_m_pcre); apr_table_add(checked_path, r->path, ""); /* search for rules with the same path and delete them */ for(j = 0; j < apr_table_elts(rules)->nelts; j++) { if(i != j) { qs_rule_t *n = (qs_rule_t *)entry[j].val; if(!n->fragment && n->path && (strcmp(r->path, n->path) == 0)) { if(m_verbose > 1) printf(" + %s %s\n", n->query_m_string == NULL ? "-" : n->query_m_string, n->query_m_pcre == NULL ? "-" : n->query_m_pcre); if(strlen(query_m_string) == 0) { query_m_string = apr_pstrcat(pool, query_m_string, n->query_m_string, NULL); } else { query_m_string = qos_addstr(pool, query_m_string, "|", n->query_m_string); } if(m_verbose > 1) printf(" > %s\n", query_m_string); query_m_pcre = apr_pstrcat(pool, query_m_pcre, n->query_m_pcre, NULL); apr_table_add(delete, entry[j].key, ""); merged = 1; } } } /* update rule if merged to any */ if(merged) { apr_table_add(delete, entry[i].key, ""); if(m_verbose) { printf("# CHANGE: <%s>", rule_str); } { const char *errptr = NULL; char *rule = apr_pstrcat(pool, "^", r->path, NULL); qs_rule_t *rs = apr_pcalloc(pool, sizeof(qs_rule_t)); if(strlen(query_m_string) > 0) { rule = apr_pstrcat(pool, rule, "\\?", qos_qqs(pool, query_m_string, query_m_pcre, 0, 0, 0), NULL); } rule = apr_pstrcat(pool, rule, "$", NULL); rs->pcre = qos_pcre_compile(rule, 0); rs->extra = pcre_study(rs->pcre, 0, &errptr); rs->path = r->path; apr_table_setn(new, rule, (char *)rs); if(m_verbose) { printf(" to <%s>\n", rule); fflush(stdout); } } } } } entry = (apr_table_entry_t *)apr_table_elts(delete)->elts; for(i = 0; i < apr_table_elts(delete)->nelts; i++) { if(m_verbose) printf("# DEL rule: %s\n", entry[i].key); apr_table_unset(rules, entry[i].key); } entry = (apr_table_entry_t *)apr_table_elts(new)->elts; for(i = 0; i < apr_table_elts(new)->nelts; i++) { apr_table_setn(rules, entry[i].key, entry[i].val); } } /* deletes rules which are not required and merge query name/value pairs */ static void qos_delete_obsolete_rules(apr_pool_t *pool, apr_table_t *rules, apr_table_t *rules_url) { apr_table_t *not_used = apr_table_make(pool, 1); apr_table_t *used; apr_table_t *used1; pthread_attr_t *tha = NULL; pthread_t tid; qs_worker_t *wt = apr_pcalloc(pool, sizeof(qs_worker_t)); if(m_query_multi_pcre) { if(m_verbose) { printf("# search for redundant rules ...\n"); fflush(stdout); } qos_query_optimization(pool, rules); if(m_verbose) printf("# "); } else { if(m_verbose) { printf("# search for redundant rules "); fflush(stdout); } } wt->pool = pool; wt->rules = rules; wt->rules_url = rules_url; wt->from = apr_table_elts(rules)->nelts / 2; wt->to = apr_table_elts(rules)->nelts; pthread_create(&tid, tha, qos_worker, (void *)wt); used = qos_get_used(pool, rules, rules_url, 0, apr_table_elts(rules)->nelts / 2); pthread_join(tid, (void *)&used1); if(m_verbose) printf(" done\n"); { int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { if((apr_table_get(used, entry[i].key) == NULL) && (apr_table_get(used1, entry[i].key) == NULL)) { if(m_verbose) printf("# DEL rule (not required): %s\n", entry[i].key); apr_table_add(not_used, entry[i].key, "-"); } } entry = (apr_table_entry_t *)apr_table_elts(not_used)->elts; for(i = 0; i < apr_table_elts(not_used)->nelts; i++) { apr_table_unset(rules, entry[i].key); } } } /* test if we need to create a new url (and save line if the rule is used the very first time (rule has been read from the configuration file)) */ static int qos_test_for_existing_rule(char *plain, char *line, apr_table_t *rules, apr_table_t *special_rules, int line_nr, apr_table_t *rules_url, apr_table_t *source_rules, int first) { int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; if((line == 0) || (strlen(line) == 0)) return 0; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; if(pcre_exec(rs->pcre, rs->extra, line, strlen(line), 0, 0, NULL, 0) >= 0) { if(first && (apr_table_get(source_rules, entry[i].key) == NULL)) { apr_table_add(source_rules, entry[i].key, ""); apr_table_add(rules_url, line, ""); apr_table_setn(special_rules, entry[i].key, (char *)rs); if(m_verbose) { printf("# ADD line %d: %s\n", line_nr, plain); printf("# --- %s\n", entry[i].key); } } if(m_verbose > 1){ printf("LINE %d, exiting rule: %s\n", line_nr, entry[i].key); } return 1; } } /* check for special rules */ entry = (apr_table_entry_t *)apr_table_elts(special_rules)->elts; for(i = 0; i < apr_table_elts(special_rules)->nelts; i++) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; if(pcre_exec(rs->pcre, rs->extra, line, strlen(line), 0, 0, NULL, 0) >= 0) { if(m_verbose) { printf("# ADD line %d: %s\n", line_nr, plain); printf("# -(S) %s\n", entry[i].key); } apr_table_setn(rules, entry[i].key, (char *)rs); return 1; } } return 0; } /* filter lines we don't want to add to the whitelist */ static int qos_enforce_blacklist(apr_table_t *rules, const char *line) { int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; if((line == 0) || (strlen(line) == 0)) return 0; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; if(pcre_exec(rs->pcre, rs->extra, line, strlen(line), 0, 0, NULL, 0) == 0) { if(m_verbose > 1) printf(" blacklist match, rule %s\n", entry[i].key); return 1; } } return 0; } /* load existing rules */ static void qos_load_rules(apr_pool_t *pool, apr_table_t *ruletable, const char *httpdconf, const char *command, int option) { FILE *f = fopen(httpdconf, "r"); char line[MAX_LINE]; if(f == NULL) { fprintf(stderr, "ERROR, could not open %s\n", httpdconf); exit(1); } while(!qos_fgetline(line, sizeof(line), f)) { // QS_DenyRequestLine '+'|'-' 'log'|'deny' char *p = strstr(line, command); if(p) { p[0] = '\0'; p++; } if(p && (strchr(line, '#') == NULL)) { p = strchr(p, ' '); if(p) { while(p[0] == ' ') p++; p = strchr(p, ' '); if(p) { while(p[0] == ' ') p++; p = strchr(p, ' '); if(p) { while(p[0] == ' ') p++; if(m_verbose > 1) { printf("load %s\n", p); } { const char *errptr = NULL; char *pattern; pcre *pcre_test; pcre_extra *extra; qs_rule_t *rs; if(p[0] == '"') { int fl = strlen(p)-2; pattern = apr_psprintf(pool, "%.*s", fl, &p[1]); } else { int fl = strlen(p); pattern = apr_psprintf(pool, "%.*s", fl, p); } pcre_test = qos_pcre_compile(pattern, option); extra = pcre_study(pcre_test, 0, &errptr); rs = apr_pcalloc(pool, sizeof(qs_rule_t)); rs->pcre = pcre_test; rs->extra = extra; apr_table_setn(ruletable, pattern, (char *)rs); } } } } } } fclose(f); } static void qos_load_blacklist(apr_pool_t *pool, apr_table_t *blacklist, const char *httpdconf) { qos_load_rules(pool, blacklist, httpdconf, "QS_DenyRequestLine", PCRE_CASELESS); } static void qos_load_whitelist(apr_pool_t *pool, apr_table_t *rules, const char *httpdconf) { qos_load_rules(pool, rules, httpdconf, "QS_PermitUri", 0); } /* tries to map a base64 string to a pcre */ static char *qos_b64_2pcre(apr_pool_t *pool, const char *line) { char *copy = apr_pstrdup(pool, line); char *b64 = qos_detect_b64(copy, 1); char *st = b64; char *ed = &b64[1]; if(m_verbose > 1) printf(" B642pcre: %s", copy); /* reserved: {}[]()^$.|*+?\ */ #define QS_BX "-_$+!" while(st[0] && (isdigit(st[0]) || isalpha(st[0]) || (strchr(QS_BX, st[0]) != NULL))) { st--; } st++; st[0] = '\0'; while(ed[0] && (isdigit(ed[0]) || isalpha(ed[0]) || (strchr(QS_BX, ed[0]) != NULL))) { ed++; } if(m_verbose > 1) printf(" %s <> %s\n", copy, ed); return apr_pstrcat(pool, qos_escape_pcre(pool, copy), "[a-zA-Z0-9\\-_\\$\\+!]+", ed[0] == '\0' ? NULL : qos_escape_pcre(pool, ed), NULL); } /* maps a query string to a pairs of = or = */ static char *qos_query_string_pcre(apr_pool_t *pool, const char *path) { char *copy = apr_pstrdup(pool, path); char *pos = copy; char *ret = ""; int isValue = 0; int open = 0; while(copy[0]) { if((copy[0] == '=') && (copy[1] != '=') && !open) { copy[0] = '\0'; qos_unescaping(pos); if(!open) { ret = apr_pstrcat(pool, ret, "(", NULL); open = 1; } if(m_query_pcre) { if(strlen(pos) > 0) { ret = apr_pstrcat(pool, ret, "[", qos_2pcre(pool, pos), "]+=", NULL); } else { ret = apr_pstrcat(pool, ret, "=", NULL); } } else { ret = apr_pstrcat(pool, ret, qos_escape_pcre(pool, pos), "=", NULL); } open = 1; pos = copy; pos++; isValue = 1; } if(copy[0] == '&') { copy[0] = '\0'; if(strlen(pos) == 0) { ret = apr_pstrcat(pool, ret, "[&]?", NULL); if(open) { ret = apr_pstrcat(pool, ret, ")?", NULL); open = 0; } } else { qos_unescaping(pos); ret = apr_psprintf(pool, "%s[%s]{0,%"APR_SIZE_T_FMT"}[&]?", ret, qos_2pcre(pool, pos), strlen(pos) + m_query_len_pcre); if(open) { ret = apr_pstrcat(pool, ret, ")?", NULL); open = 0; } } pos = copy; pos++; isValue = 0; } copy++; } if(pos != copy) { qos_unescaping(pos); if(isValue) { ret = apr_psprintf(pool, "%s[%s]{0,%"APR_SIZE_T_FMT"}[&]?", ret, qos_2pcre(pool, pos), strlen(pos) + m_query_len_pcre); } else { if(!open) { ret = apr_pstrcat(pool, "(", ret, NULL); open = 1; } if(m_query_pcre) { ret = apr_pstrcat(pool, ret, "[", qos_2pcre(pool, pos), "]+", NULL); } else { ret = apr_pstrcat(pool, ret, qos_escape_pcre(pool, pos), NULL); } } if(open) { ret = apr_pstrcat(pool, ret, ")?", NULL); open = 0; } } if(open) { ret = apr_pstrcat(pool, ret, ")?", NULL); open = 0; } if(m_query_pcre) { return ret; } else { return ret; /* it woud be nice to use (see -o): * ((a=b)?(c=d)?)* * instead of: * (a=b)?(c=d)? and (c=d)?(a=b)? * but in this case, two rules are much faster than one * it's probably better to use the -m option */ } } /* maps a query string to a list of names and a single pcre for all values: |= */ static char *qos_multi_query_string_pcre(apr_pool_t *pool, const char *path, char **query_m_string, char **query_m_pcre) { char *copy = apr_pstrdup(pool, path); char *pos = copy; char *string = ""; char *query_pcre = ""; int isValue = 0; int singleEq = 0; int hasEq = 0; int startAmp = 0; if(copy[0] == '&') startAmp = 1; while(copy[0]) { if(copy[0] == '=') hasEq = 1; if((copy[0] == '=') && (copy[1] != '=') && !isValue) { copy[0] = '\0'; qos_unescaping(pos); if(strlen(pos) > 0) { if(strlen(string) > 0) string = apr_pstrcat(pool, string, "|", NULL); string = apr_pstrcat(pool, string, qos_escape_pcre(pool, pos), NULL); } else { if((copy[1] == '&') || (copy[1] == '\0')) { singleEq = 1; } } pos = copy; pos++; isValue = 1; } if(copy[0] == '&') { copy[0] = '\0'; if(!isValue) { qos_unescaping(pos); if(strlen(string) > 0) string = apr_pstrcat(pool, string, "|", NULL); string = apr_pstrcat(pool, string, qos_escape_pcre(pool, pos), NULL); } else { if(strlen(pos) != 0) { qos_unescaping(pos); query_pcre = apr_pstrcat(pool, query_pcre, pos, NULL); } } pos = copy; pos++; isValue = 0; } copy++; } if(pos != copy) { qos_unescaping(pos); if(isValue) { query_pcre = apr_pstrcat(pool, query_pcre, pos, NULL); } else { if(strlen(string) > 0) string = apr_pstrcat(pool, string, "|", NULL); string = apr_pstrcat(pool, string, qos_escape_pcre(pool, pos), NULL); } } *query_m_string = string; *query_m_pcre = query_pcre; return qos_qqs(pool, string, query_pcre, singleEq, hasEq, startAmp); } /* maps a path to a single pcre (don't mind its length) */ static char *qos_path_pcre(apr_pool_t *lpool, const char *path) { char *dec = apr_pstrdup(lpool, path); qos_unescaping(dec); return apr_pstrcat(lpool, "[", qos_2pcre(lpool, dec), "]+", NULL); } /* maps a path to / */ static char *qos_path_pcre_string(apr_pool_t *lpool, const char *path) { int nohandler = 0; char *lpath = apr_pstrdup(lpool, path); char *last; char *str = ""; int depth = m_path_depth; char *rx = ""; if(lpath[strlen(lpath)-1] == '/') { lpath[strlen(lpath)-1] = '\0'; nohandler = 1; } last = strrchr(lpath, '/'); while(last && depth) { qos_unescaping(last); if(m_base64 && qos_detect_b64(last, 0)) { str = apr_pstrcat(lpool, qos_b64_2pcre(lpool, last), str, NULL); } else { str = apr_pstrcat(lpool, qos_escape_pcre(lpool, last), str, NULL); } last[0] = '\0'; last = strrchr(lpath, '/'); depth--; } if(lpath[0]) { qos_unescaping(lpath); rx = apr_pstrcat(lpool, "[", qos_2pcre(lpool, lpath), "]+", NULL); } if(strlen(str) > 0) { if(nohandler) { rx = apr_pstrcat(lpool, rx, str, "[/]?", NULL); } else { rx = apr_pstrcat(lpool, rx, str, NULL); } } return rx; } static int qos_is_alnum(const char *string) { unsigned char *in = (unsigned char *)string; int i = 0; if(in == NULL) return 0; while(in[i]) { if(!apr_isalnum(in[i])) return 0; i++; } return 1; } static void qos_rule_optimization(apr_pool_t *pool, apr_pool_t *lpool, apr_table_t *rules, apr_table_t *special_rules) { int i; apr_table_t *new_rules = apr_table_make(pool, 5); apr_table_t *del_rules = apr_table_make(pool, 5); apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; int hit = 0; int j; for(j = 0; j < apr_table_elts(rules)->nelts; j++) { if(i != j) { qs_rule_t *rsj = (qs_rule_t *)entry[j].val; if(rs->query_m_string && rsj->query_m_string) { if(strcmp(rs->query_m_string, rsj->query_m_string) == 0) { if(strlen(entry[i].key) == strlen(entry[j].key)) { hit++; } } if(hit == 5) { int s = 0; int e = 0; while(entry[i].key[s] && (entry[i].key[s] == entry[j].key[s])) s++; e = s; while(entry[i].key[e] && ((entry[i].key[e] != entry[j].key[e]) || (apr_isalnum(entry[i].key[e]) && apr_isalnum(entry[j].key[e])))) e++; if((e > s) && (s > 14) && (e < strlen(entry[i].key)) && (strstr(&entry[i].key[e], "\?") != NULL)) { const char *errptr = NULL; char *match = apr_psprintf(lpool, "%.*s%.*s", e-s, &entry[i].key[s], e-s, &entry[j].key[s]); if(qos_is_alnum(match)) { char *matchx = apr_psprintf(lpool, "[%s]{%d}", qos_2pcre(lpool, match), e-s); char *new = apr_psprintf(pool, "%.*s%s%s", s, entry[i].key, matchx, &entry[i].key[e]); qs_rule_t *rsn = apr_pcalloc(pool, sizeof(qs_rule_t)); rsn->pcre = qos_pcre_compile(new, 0); rsn->extra = pcre_study(rsn->pcre, 0, &errptr); rsn->path = rs->path; rsn->query_m_string = rs->query_m_string; rsn->query_m_pcre = rs->query_m_pcre; rsn->fragment = rs->fragment; if(m_verbose) { printf("# CHANGE: <%s> to <%s>\n", entry[i].key, new); fflush(stdout); } apr_table_setn(new_rules, new, (char *)rsn); apr_table_addn(del_rules, entry[i].key, entry[i].val); apr_table_addn(del_rules, entry[j].key, entry[j].val); if(m_verbose > 1) { if(m_verbose) printf(" [%s] [%s]\n", entry[i].key, entry[j].key); if(m_verbose) printf(" [%s] [%s]\n", match, matchx); } break; } } } } } } } entry = (apr_table_entry_t *)apr_table_elts(new_rules)->elts; for(i = 0; i < apr_table_elts(new_rules)->nelts; i++) { apr_table_setn(rules, entry[i].key, entry[i].val); } entry = (apr_table_entry_t *)apr_table_elts(del_rules)->elts; for(i = 0; i < apr_table_elts(del_rules)->nelts; i++) { apr_table_unset(rules, entry[i].key); } } /* rules do not care the order of parameter values (makes rule processing slow) * (id=[0-9]{0,13}[&]?)?(name=[a-zA-Z]{0,12}[&]?)? * ((id=[0-9]{0,13}[&]?)|(name=[a-zA-Z]{0,12}[&]?))* */ static char *qos_post_optimization(apr_pool_t *lpool, char *query) { int hit = 0; char *p = query; while(p && p[0]) { if(strncmp(p, "[&]?)?(", 7) == 0) { hit = 1; p[5] = '|'; } p++; } if(hit) { query[strlen(query)-1] = '\0'; return apr_psprintf(lpool, "(%s)*", query); } return query; } static void qos_auto_detect(char **raw) { char *line = *raw; int rc_c = -1; if(m_req_regex) { int ovector[QS_OVECCOUNT]; /* no request line, maybe raw Apache access log? */ rc_c = pcre_exec(m_req_regex, NULL, line, strlen(line), 0, 0, ovector, QS_OVECCOUNT); if(rc_c >= 0) { char *sr; line = &line[ovector[0]]; line[ovector[1] - ovector[0]] = '\0'; sr = strchr(line, ' '); while(sr[0] == ' ')sr++; *raw = sr; sr = strrchr(line, ' '); sr[0] = '\0'; } } if(rc_c < 0) { /* or an audit log like "%h %>s %{qos-loc}n %{qos-path}n%{qos-query}n" */ char *pe = line; int pi = 3; while(pe && (pi > 0)) { pi--; pe = strchr(pe, ' '); if(pe) { pe++; } } if(pe && pe[0] == '/' && (pi == 0)) { *raw = pe; } } return; } /* process the input file line by line */ static void qos_process_log(apr_pool_t *pool, apr_table_t *blacklist, apr_table_t *rules, apr_table_t *rules_url, apr_table_t *special_rules, FILE *f, int *ln, int *dc, int first) { char *readline = apr_pcalloc(pool, MAX_BODY_BUFFER); int deny_count = *dc; int line_nr = *ln; apr_table_t *source_rules = apr_table_make(pool, 10); int rule_optimization = 300; while(!qos_fgetline(readline, MAX_BODY_BUFFER, f)) { int doubleSlash = 0; apr_uri_t parsed_uri; apr_pool_t *lpool; char *line = readline; apr_pool_create(&lpool, NULL); line_nr++; if((strlen(line) > 1) && line[1] == '/') { doubleSlash = 1; line++; } if(line[0] != '/') { if(!m_log_req_regex) { m_log_req_regex = 1; fprintf(stderr, "WARNING, line %d: " "unexpected data format, try to detect request lines automatically\n", line_nr); } qos_auto_detect(&line); } if(apr_uri_parse(lpool, line, &parsed_uri) != APR_SUCCESS) { fprintf(stderr, "ERROR, could parse uri %s\n", line); if(m_exit_on_error) exit(1); } if(parsed_uri.path == NULL || (parsed_uri.path[0] != '/')) { fprintf(stderr, "WARNING, line %d: invalid request %s\n", line_nr, line); } else if(m_filter && parsed_uri.path && strncmp(parsed_uri.path, m_filter, strlen(m_filter)) != 0) { // skip filtered line } else { char *path = NULL; char *query = NULL; char *query_m_string = NULL; char *query_m_pcre = NULL; char *fragment = NULL; char *copy = apr_pstrdup(lpool, line); qos_unescaping(copy); if(qos_enforce_blacklist(blacklist, copy)) { fprintf(stderr, "WARNING: blacklist filter match at line %d for %s\n", line_nr, line); deny_count++; } else { if(!qos_test_for_existing_rule(line, copy, rules, special_rules, line_nr, rules_url, source_rules, first)) { if(m_verbose > 1) printf("LINE %d, analyse: %s\n", line_nr, line); if(parsed_uri.query) { if(strcmp(parsed_uri.path, "/") == 0) { path = apr_pstrdup(lpool, "/"); } else { path = qos_path_pcre_string(lpool, parsed_uri.path); } if(m_query_single_pcre) { char *qc = apr_pstrdup(lpool, parsed_uri.query); qos_unescaping(qc); query = apr_pstrcat(lpool, "[", qos_2pcre(lpool, qc), "]+", NULL); } else { if(!m_query_multi_pcre) { query = qos_query_string_pcre(lpool, parsed_uri.query); if(m_query_o_pcre) { query = qos_post_optimization(lpool, query); } } else { query = qos_multi_query_string_pcre(lpool, parsed_uri.query, &query_m_string, &query_m_pcre); } } } else { if(strcmp(parsed_uri.path, "/") == 0) { path = apr_pstrdup(lpool, "/"); } else { if(m_handler) { path = qos_path_pcre_string(lpool, parsed_uri.path); } else { if(pcre_exec(pcre_simple_path, NULL, parsed_uri.path, strlen(parsed_uri.path), 0, 0, NULL, 0) >= 0) { path = apr_pstrdup(lpool, QS_SIMPLE_PATH_PCRE); } else { path = qos_path_pcre(lpool, parsed_uri.path); } } } } if(parsed_uri.fragment) { char *f = apr_pstrdup(lpool, parsed_uri.fragment); if(strlen(f) > 0) { qos_unescaping(f); fragment = apr_pstrcat(lpool, "[", qos_2pcre(lpool, f), "]+", NULL); } else { fragment = apr_pstrcat(lpool, "", NULL); } } if(m_verbose > 1) { printf(" path: %s\n", parsed_uri.path); printf(" path rule: %s\n", path); if(query) { printf(" query: %s\n", parsed_uri.query); printf(" query rule: %s\n", query); } if(fragment) { printf(" fragment: %s\n", parsed_uri.fragment); printf(" fragment rule: %s\n", fragment); } } { const char *errptr = NULL; char *rule; qs_rule_t *rs = apr_pcalloc(pool, sizeof(qs_rule_t)); if(doubleSlash) { rule = apr_pstrcat(pool, "^[/]?", path, NULL); } else { rule = apr_pstrcat(pool, "^", path, NULL); } if(query) { rule = apr_pstrcat(pool, rule, "\\?", query, NULL); } if(fragment) { rule = apr_pstrcat(pool, rule, "#", fragment, NULL); rs->fragment = 1; } else { rs->fragment = 0; } rule = apr_pstrcat(pool, rule, "$", NULL); rs->pcre = qos_pcre_compile(rule, 0); rs->extra = pcre_study(rs->pcre, 0, &errptr); rs->path = apr_pstrdup(pool, path); if(m_query_multi_pcre && !fragment) { rs->query_m_string = apr_pstrdup(pool, query_m_string); rs->query_m_pcre = apr_pstrdup(pool, query_m_pcre); } else { rs->query_m_string = NULL; rs->query_m_pcre = NULL; } // don't mind if extra is null if(m_verbose) { printf("# ADD line %d: %s\n", line_nr, line); printf("# %.3d %s\n", apr_table_elts(rules)->nelts+1, rule); fflush(stdout); } if(pcre_exec(rs->pcre, rs->extra, copy, strlen(copy), 0, 0, NULL, 0) < 0) { fprintf(stderr, "ERROR, rule check failed (did not match)!\n"); fprintf(stderr, " line %d: %s\n", line_nr, line); fprintf(stderr, " string: %s\n", copy); fprintf(stderr, " rule: %s\n", rule); if(m_exit_on_error) exit(1); } else { apr_table_add(rules_url, copy, "unescaped line"); apr_table_add(source_rules, rule, ""); apr_table_setn(rules, rule, (char *)rs); } if(apr_table_elts(rules)->nelts == 2000) { fprintf(stderr, "ERROR, too many rules (limited to max. 2000)\n"); if(m_exit_on_error) exit(1); } /* rule optimazion searching for redundant patterns (only in conjunction with -m, -b and !-n */ if((apr_table_elts(rules)->nelts == rule_optimization) && m_redundant && m_query_multi_pcre && m_base64) { /* got too many rules, try to find more general rules */ if(m_verbose) { printf("# too many rules: start rule optimization ...\n"); fflush(stdout); } qos_rule_optimization(pool, lpool, rules, special_rules); if(m_verbose) { printf("# continue with rule generation\n"); fflush(stdout); } rule_optimization = rule_optimization + 200; } } } } } apr_pool_destroy(lpool); } *dc = deny_count; *ln = line_nr; } static void qos_measurement(apr_pool_t *pool, apr_table_t *blacklist, apr_table_t *rules, FILE *f, int *ln) { char *readline = apr_pcalloc(pool, MAX_BODY_BUFFER); int line_nr = 0; while(!qos_fgetline(readline, MAX_BODY_BUFFER, f)) { apr_uri_t parsed_uri; apr_pool_t *lpool; char *line = readline; apr_pool_create(&lpool, NULL); line_nr++; if((strlen(line) > 1) && line[1] == '/') { strcpy(line, &line[1]); } if(line[0] != '/') { qos_auto_detect(&line); } if(apr_uri_parse(lpool, line, &parsed_uri) != APR_SUCCESS) { fprintf(stderr, "ERROR, could parse uri %s\n", line); if(m_exit_on_error) exit(1); } if(parsed_uri.path == NULL || (parsed_uri.path[0] != '/')) { fprintf(stderr, "WARNING, line %d: invalid request %s\n", line_nr, line); } else { char *copy = apr_pstrdup(lpool, line); int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; qos_unescaping(copy); for(i = 0; i < apr_table_elts(rules)->nelts; i++) { qs_rule_t *rs = (qs_rule_t *)entry[i].val; pcre_exec(rs->pcre, NULL, copy, strlen(copy), 0, 0, NULL, 0); } } apr_pool_destroy(lpool); } *ln = line_nr; } int main(int argc, const char * const argv[]) { apr_table_entry_t *entry; long performance = -1; time_t start = time(NULL); time_t end; int line_nr = 0; int deny_count = 0; char *time_string; int i, rc; const char *access_log = NULL; FILE *f; apr_pool_t *pool; apr_table_t *rules; apr_table_t *special_rules; apr_table_t *blacklist; apr_table_t *rules_url; int blacklist_size = 0; int whitelist_size = 0; char *cmd = strrchr(argv[0], '/'); const char *httpdconf = NULL; apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); rules = apr_table_make(pool, 10); special_rules = apr_table_make(pool, 10); blacklist = apr_table_make(pool, 10); rules_url = apr_table_make(pool, 10); rc = nice(10); if(rc == -1) { fprintf(stderr, "ERROR, failed to change nice value: %s\n", strerror(errno)); } if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-v") == 0) { if (--argc >= 1) { m_verbose = atoi(*(++argv)); } } else if(strcmp(*argv,"-c") == 0) { if (--argc >= 1) { httpdconf = *(++argv); } } else if(strcmp(*argv,"-i") == 0) { if (--argc >= 1) { access_log = *(++argv); } } else if(strcmp(*argv,"-k") == 0) { if (--argc >= 1) { m_pfx = *(++argv); } } else if(strcmp(*argv,"-f") == 0) { if (--argc >= 1) { m_filter = *(++argv); } } else if(strcmp(*argv,"-d") == 0) { if (--argc >= 1) { m_path_depth = atoi(*(++argv)); } } else if(strcmp(*argv,"-u") == 0) { if (--argc >= 1) { const char *coders = *(++argv); if(strstr(coders, "uni")) { m_mode |= QOS_DEC_MODE_FLAGS_UNI; } if(strstr(coders, "ansi")) { m_mode |= QOS_DEC_MODE_FLAGS_ANSI; } if(strstr(coders, "html")) { m_mode |= QOS_DEC_MODE_FLAGS_HTML; } } } else if(strcmp(*argv,"-n") == 0) { m_redundant = 0; } else if(strcmp(*argv,"-b") == 0) { if (--argc >= 1) { m_base64 = atoi(*(++argv)); } } else if(strcmp(*argv,"-l") == 0) { if (--argc >= 1) { m_query_len_pcre = atoi(*(++argv)); } } else if(strcmp(*argv,"-p") == 0) { m_query_pcre = 1; } else if(strcmp(*argv,"-m") == 0) { m_query_multi_pcre = 1; } else if(strcmp(*argv,"-o") == 0) { m_query_o_pcre = 1; } else if(strcmp(*argv,"-s") == 0) { m_query_single_pcre = 1; } else if(strcmp(*argv,"-e") == 0) { m_exit_on_error = 1; } else if(strcmp(*argv,"-t") == 0) { performance = 0; } else if(strcmp(*argv,"-h") == 0) { m_handler = 1; } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } argc--; argv++; } qos_init_pcre(); if((m_query_pcre && m_query_multi_pcre) || (m_query_pcre && m_query_single_pcre) || (m_query_multi_pcre && m_query_single_pcre) || (m_query_pcre && m_query_o_pcre) || (m_query_multi_pcre && m_query_o_pcre) || (m_query_single_pcre && m_query_o_pcre)) { fprintf(stderr, "ERROR, option -s,-m,-o or -p can't be used together.\n"); exit(1); } if(httpdconf) { qos_load_blacklist(pool, blacklist, httpdconf); blacklist_size = apr_table_elts(blacklist)->nelts; qos_load_whitelist(pool, rules, httpdconf); whitelist_size = apr_table_elts(rules)->nelts; } if(access_log == NULL) usage(cmd, 0); f = fopen(access_log, "r"); if(f == NULL) { fprintf(stderr, "ERROR, could not open input file %s\n", access_log); exit(1); } qos_process_log(pool, blacklist, rules, rules_url, special_rules, f, &line_nr, &deny_count, 1); fclose(f); if(m_redundant) { int xl = 0; int y = 0; // delete useless rules qos_delete_obsolete_rules(pool, rules, rules_url); // ensure, we have not deleted to many! if(m_verbose) { printf("# verify new rules ...\n"); fflush(stdout); } // if(httpdconf) { // qos_load_whitelist(pool, rules, httpdconf); // } f = fopen(access_log, "r"); qos_process_log(pool, blacklist, rules, rules_url, special_rules, f, &xl, &y, 0); fclose(f); } if(performance == 0) { int lx = 0; apr_time_t tv; f = fopen(access_log, "r"); tv = apr_time_now(); qos_measurement(pool, blacklist, rules, f, &lx); tv = apr_time_now() - tv; performance = apr_time_msec(tv) + (apr_time_sec(tv) * 1000); performance = performance / lx; fclose(f); } end = time(NULL); time_string = ctime(&end); time_string[strlen(time_string) - 1] = '\0'; printf("\n# --------------------------------------------------------\n"); printf("# %s\n", time_string); printf("# %d rules from %d access log lines\n", apr_table_elts(rules)->nelts, line_nr); printf("# mod_qos version: %s\n", man_version); if(performance >= 0) { printf("# performance index (ms/req): %ld\n", performance); } printf("# source (-i): %s\n", access_log); printf("# path depth (-d): %d\n", m_path_depth); printf("# disable path only regex (-h): %s\n", m_handler == 1 ? "yes" : "no"); printf("# base64 detection level (-b): %d\n", m_base64); printf("# redundancy check (-n): %s\n", m_redundant == 1 ? "yes" : "no"); printf("# pcre only for query (-p): %s\n", m_query_pcre == 1 ? "yes" : "no"); printf("# decoding (-u): url"); if(m_mode & QOS_DEC_MODE_FLAGS_UNI) { printf(" uni"); } if(m_mode & QOS_DEC_MODE_FLAGS_HTML) { printf(" html"); } if(m_mode & QOS_DEC_MODE_FLAGS_ANSI) { printf(" ansi"); } printf("\n"); printf("# one pcre for query value (-m): %s\n", m_query_multi_pcre == 1 ? "yes" : "no"); if(m_query_o_pcre) { printf("# ignore query order (-o): yes\n"); } printf("# single pcre for query (-s): %s\n", m_query_single_pcre == 1 ? "yes" : "no"); printf("# query outsize (-l): %d\n", m_query_len_pcre); printf("# exit on error (-e): %s\n", m_exit_on_error == 1 ? "yes" : "no"); printf("# rule file (-c): %s\n", httpdconf == NULL ? "-" : httpdconf); if(httpdconf) { printf("# whitelist (loaded existing rules): %d\n", whitelist_size); printf("# blacklist (loaded deny rules): %d\n", blacklist_size); printf("# blacklist matches: %d\n", deny_count); } printf("# duration: %ld minutes\n", (end - start) / 60); printf("# --------------------------------------------------------\n"); { STACK_OF(qs_rule_t) *st = sk_new(STACK_qs_cmp); qs_rule_t *r; int j = 1; entry = (apr_table_entry_t *)apr_table_elts(rules)->elts; for(i = 0; i < apr_table_elts(rules)->nelts; i++) { // printf("QS_PermitUri +QSF%0.3d deny \"%s\"\n", i+1, entry[i].key); r = apr_pcalloc(pool, sizeof(qs_rule_t)); r->rule = entry[i].key; sk_push(st, (char *)r); } sk_sort(st); i = sk_num(st); for(; i > 0; i--) { r = (qs_rule_t *)sk_value(st, i-1); printf("QS_PermitUri +%s%.3d deny \"%s\"\n", m_pfx ? m_pfx : "QSF", j, qs_apache_escape(pool, r->rule)); j++; } } apr_pool_destroy(pool); return 0; } mod_qos-11.36/tools/src/qssign.c0000644000000000000020000005077713016363764015102 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * Log data signing tool to ensure data integrity. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2010-2016 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is released under the GPL with the additional * exemption that compiling, linking, and/or using OpenSSL is allowed. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qssign.c,v 1.47 2016/10/29 13:07:24 pbuchbinder Exp $"; #include #include #include #include #include #include /* openssl */ #include #include /* PCRE */ #include /* apr/apr-util */ #define QS_USEAPR 1 #include #include #include #include #include #include #include #include "qs_util.h" #include "qs_apo.h" #define SEQDIG "12" #define QS_END "qssign---end-of-data" static const char *m_fmt = ""; static long m_nr = 1; static int m_logend = 0; static void (*m_end)(const char *) = NULL; static int m_end_pos = 0; static const char *m_sec = NULL; static const EVP_MD *m_evp; static const pcre *m_filter = NULL; typedef struct { const char* fmt; const char* pattern; const char* test; } qos_p_t; #define severity "[A-Z]+" static const qos_p_t pattern[] = { { "%s | INFO | "QS_END, "^[0-9]{4}[-][0-9]{2}[-][0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}[ ]+[|][ ]+"severity"[ ]+[|][ ]+[a-zA-Z0-9]+", "2010-04-14 20:18:37,464 | INFO | org.hibernate.cfg.Configuration" }, { "%s INFO "QS_END, "^[0-9]{4}[-][0-9]{2}[-][0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}[ ]+"severity"[ ]+", "2011-08-30 07:27:22,738 INFO loginId='test'" }, { "%s qssign end INFO "QS_END, "^[0-9]{4}[-][0-9]{2}[-][0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}[ ]+[a-zA-Z0-9\\.-]+[ ]+[a-zA-Z0-9\\.-]+[ ]+"severity"[ ]+", "2011-09-01 07:37:17,275 main org.apache.catalina.startup.Catalina INFO Server" }, { "%s INFO "QS_END, "^[0-9]{4}[-][0-9]{2}[-][0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}[ ]+", "2011-08-30 07:27:22,738 " }, { NULL, NULL, NULL } }; /** * Writes the signed log line to stdout. * * @param line Data to sign * @param line_size Length of the data * @param sec Secret * @param sec_len Length of the secret */ static void qs_write(char *line, int line_size, const char *sec, int sec_len) { #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX hmac; HMAC_CTX *hmac_p = &hmac; #else HMAC_CTX *hmac_p; #endif unsigned char data[HMAC_MAX_MD_CBLOCK]; unsigned int len; char *m; int data_len; sprintf(&line[strlen(line)], " %."SEQDIG"ld", m_nr); #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_init(hmac_p); #else hmac_p = HMAC_CTX_new(); #endif HMAC_Init_ex(hmac_p, sec, sec_len, m_evp, NULL); HMAC_Update(hmac_p, (const unsigned char *)line, strlen(line)); HMAC_Final(hmac_p, data, &len); #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_cleanup(hmac_p); #else HMAC_CTX_free(hmac_p); #endif m = calloc(1, apr_base64_encode_len(len) + 1); data_len = apr_base64_encode(m, (char *)data, len); m[data_len] = '\0'; printf("%s#%s\n", line, m); fflush(stdout); free(m); m_nr++; return; } /* * [Fri Dec 03 07:37:40 2010] [notice] ......... */ static void qs_end_apache_err(const char *sec) { int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); strftime(time_string, sizeof(time_string), "%a %b %d %H:%M:%S %Y", ptr); sprintf(line, "[%s] [notice] "QS_END, time_string); qs_write(line, line_size, sec, sec_len); return; } /* * 12.12.12.12 - - [03/Dec/2010:07:36:51 +0100] ............... */ static void qs_end_apache_acc(const char *sec) { int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); char sign; int timz; apr_time_exp_t xt; apr_time_exp_lt(&xt, apr_time_now()); timz = xt.tm_gmtoff; if(timz < 0) { timz = -timz; sign = '-'; } else { sign = '+'; } strftime(time_string, sizeof(time_string), "%d/%b/%Y:%H:%M:%S", ptr); sprintf(line, "0.0.0.0 - - [%s %c%.2d%.2d] "QS_END, time_string, sign, timz / (60*60), (timz % (60*60)) / 60); qs_write(line, line_size, sec, sec_len); return; } /* * 2010 12 03 17:00:30.425 qssign end 0.0 5-NOTICE: .............. */ static void qs_end_nj(const char *sec) { int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); char buf[1024]; int i; for(i = 0; i < m_end_pos; i++) { buf[i] = ' '; } buf[i] = '\0'; strftime(time_string, sizeof(time_string), "%Y %m %d %H:%M:%S.000", ptr); sprintf(line, "%s qssign end 0.0%s 5-NOTICE: "QS_END, time_string, buf); qs_write(line, line_size, sec, sec_len); return; } /* * 2010-04-14 20:18:37,464 ... (using m_fmt) */ static void qs_end_lj(const char *sec) { int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); strftime(time_string, sizeof(time_string), "%Y-%m-%d %H:%M:%S,000", ptr); sprintf(line, m_fmt, time_string); qs_write(line, line_size, sec, sec_len); return; } /* * Dec 6 04:00:06 localhost kernel: */ static void qs_end_lx(const char *sec) { char hostname[1024]; int len = sizeof(hostname); int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); strftime(time_string, sizeof(time_string), "%b %e %H:%M:%S", ptr); if(gethostname(hostname, len) != 0) { hostname[0] = '-'; hostname[1] = '\0'; } sprintf(line, "%s %s qssign: "QS_END, time_string, hostname); qs_write(line, line_size, sec, sec_len); return; } /* * 2013/11/13 17:38:41 [error] 6577#0: *1 open() */ static void qs_end_ngx(const char *sec) { int sec_len = strlen(sec); char line[MAX_LINE]; int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = sizeof(line) - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); strftime(time_string, sizeof(time_string), "%Y/%m/%d %H:%M:%S", ptr); sprintf(line, "%s [notice] 0#0: "QS_END, time_string); qs_write(line, line_size, sec, sec_len); return; } void qs_signal_exit(int e) { if(m_logend && (m_end != NULL)) { m_end(m_sec); } exit(0); } /** * Tries to find out a suiteable log line format which is used * to log sign end messages (so let the verifier known, that the * data ends nothing has been cut off). * * Sets the format to global variables. * * known pattern * - [Fri Dec 03 07:37:40 2010] [notice] ......... * - 12.12.12.12 - - [03/Dec/2010:07:36:51 +0100] ............... * - 2010 12 03 17:00:30.425 qssign end 0.0 5-NOTICE: .............. * 46 <- var -> 63 71 * - Dec 6 04:00:06 localhost kernel: * - some 2010-12-03 17:00:30,425 ... * * @param s */ static void qs_set_format(char *s) { regex_t r_apache_err; regex_t r_apache_acc; regex_t r_nj; regex_t r_lx; regex_t r_ngx; if(regcomp(&r_apache_err, "^\\[[a-zA-Z]{3} [a-zA-Z]{3} [0-9]+ [0-9]+:[0-9]+:[0-9]+ [0-9]+\\] \\[[a-zA-Z]+\\] ", REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (err)\n"); exit(1); } if(regcomp(&r_apache_acc, "^[0-9.]+ [a-zA-Z0-9\\@_\\.\\-]+ [a-zA-Z0-9\\@_\\.\\-]+ \\[[0-9]+/[a-zA-Z]{3}/[0-9:]+[0-9\\+ ]+\\] ", REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (acc)\n"); exit(1); } if(regcomp(&r_nj, "^[0-9]{4} [0-9]{2} [0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\\.[0-9]{3} [a-zA-Z0-9]+[ ]+.*[A-Z]+[ ]*:", REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (nj)\n"); exit(1); } if(regcomp(&r_lx, "^[a-zA-Z]{3}[ ]+[0-9]+[ ]+[0-9]{2}:[0-9]{2}:[0-9]{2}[ ]+[a-zA-Z0-9_\\.\\-]+[ ]+[a-zA-Z0-9_\\.\\-]+:", REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (lx)\n"); exit(1); } if(regcomp(&r_ngx, "^[0-9]{4}/[0-9]{2}/[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2} \\[[a-z]+\\] [0-9]+#[0-9]+: ", REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (ngx)\n"); exit(1); } if(regexec(&r_apache_err, s, 0, NULL, 0) == 0) { m_end = &qs_end_apache_err; } else if(regexec(&r_apache_acc, s, 0, NULL, 0) == 0) { m_end = &qs_end_apache_acc; } else if(regexec(&r_nj, s, 0, NULL, 0) == 0) { char *dp = strstr(s, ": "); if(dp) { /* calculate the "var" size, see comment above */ m_end_pos = dp - s - 47 - 8 - 3; if((m_end_pos < 0) || (m_end_pos > 1000)) { m_end_pos = 0; } } m_end = &qs_end_nj; } else if(regexec(&r_lx, s, 0, NULL, 0) == 0) { m_end = &qs_end_lx; } else if(regexec(&r_ngx, s, 0, NULL, 0) == 0) { m_end = &qs_end_ngx; } // search within the generic yyyy-mm-dd hh-mm-ss,mmm patterns if(!m_end) { const qos_p_t *p = pattern; while(p->fmt) { regex_t r_j; if(regcomp(&r_j, p->pattern, REG_EXTENDED) != 0) { fprintf(stderr, "failed to compile regex (%s)\n", p->pattern); exit(1); } if(regexec(&r_j, s, 0, NULL, 0) == 0) { m_fmt = p->fmt; m_end = &qs_end_lj; break; } p++; } } /* default (apache error log format) */ if(m_end == NULL) { m_end = &qs_end_apache_err; } return; } /** * Process the data from stdin. * * @param sec Passphrase */ static void qs_sign(const char *sec) { int sec_len = strlen(sec); char *line = calloc(1, MAX_LINE_BUFFER+1); int dig = atoi(SEQDIG); /* ' ' '#' */ int line_size = MAX_LINE_BUFFER - 1 - dig - 1 - (2*HMAC_MAX_MD_CBLOCK) - 1; int line_len; while(fgets(line, MAX_LINE_BUFFER, stdin) != NULL) { line_len = strlen(line) - 1; while(line_len > 0) { // cut tailing CR/LF if(line[line_len] >= ' ') { break; } line[line_len] = '\0'; line_len--; } if(m_logend && (m_end == NULL)) { qs_set_format(line); } if(pcre_exec(m_filter, NULL, line, line_size, 0, 0, NULL, 0) >= 0) { printf("%s\n", line); fflush(stdout); } else { qs_write(line, line_size, sec, sec_len); } } return; } static long qs_verify(const char *sec) { int end_seen = 0; int sec_len = strlen(sec); long err = 0; // errors long lnr = 0; // line number char *line = calloc(1, MAX_LINE_BUFFER+1); int line_size = MAX_LINE_BUFFER; int line_len; m_nr = -1; // sequence number long nr_alt = -1; long nr_alt_lnr = -1; while(fgets(line, line_size, stdin) != NULL) { int valid = 0; long ns = 0; #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX hmac; HMAC_CTX *hmac_p = &hmac; #else HMAC_CTX *hmac_p; #endif unsigned char data[HMAC_MAX_MD_CBLOCK]; unsigned int len; char *m; int data_len; char *sig; char *seq; line_len = strlen(line) - 1; while(line_len > 0) { // cut tailing CR/LF if(line[line_len] >= ' ') { break; } line[line_len] = '\0'; line_len--; } sig = strrchr(line, '#'); seq = strrchr(line, ' '); lnr++; if(seq && sig) { sig[0] = '\0'; sig++; /* verify hmac */ #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_init(hmac_p); #else hmac_p = HMAC_CTX_new(); #endif HMAC_Init_ex(hmac_p, sec, sec_len, m_evp, NULL); HMAC_Update(hmac_p, (const unsigned char *)line, strlen(line)); HMAC_Final(hmac_p, data, &len); #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_cleanup(hmac_p); #else HMAC_CTX_free(hmac_p); #endif m = calloc(1, apr_base64_encode_len(len) + 1); data_len = apr_base64_encode(m, (char *)data, len); m[data_len] = '\0'; if(strcmp(m, sig) != 0) { err++; fprintf(stderr, "ERROR on line %ld: invalid signature\n", lnr); /* message may be modified/currupt or inserted: next line may have the next sequence number (modified) or the same (inserted) */ nr_alt = m_nr + 1; nr_alt_lnr = lnr + 1; } else { valid = 1; } free(m); /* verify sequence */ seq++; ns = atol(seq); if(ns == 0) { err++; fprintf(stderr, "ERROR on line %ld: invalid sequence\n", lnr); } else { if(m_nr != -1) { if(lnr == nr_alt_lnr) { // last line was modfied if(m_nr != ns) { // and therefore, we also accept the next seqence number m_nr = nr_alt; } nr_alt = -1; nr_alt_lnr = -1; } if(m_nr != ns) { if(ns == 1) { if(!end_seen) { err++; fprintf(stderr, "ERROR on line %ld: wrong sequence, server restart? (expect %."SEQDIG"ld)\n", lnr, m_nr); } } else { err++; fprintf(stderr, "ERROR on line %ld: wrong sequence (expect %."SEQDIG"ld)\n", lnr, m_nr); } } } else if(m_logend) { // log should (if not rotated) start with message 0 if(ns != 1) { fprintf(stderr, "NOTICE: log starts with sequence %."SEQDIG"ld, log rotation?" " (expect %."SEQDIG"d)\n", ns, 1); } } if(valid) { m_nr = ns; } } } else { err++; fprintf(stderr, "ERROR on line %ld: missing signature/sequence\n", lnr); } end_seen = 0; if(valid) { char *end_marker = strstr(line, QS_END); m_nr++; if(end_marker != NULL) { /* QS_END + " " + SEQDIG */ int sz = strlen(QS_END) + 1 + atoi(SEQDIG); if(sz == (strlen(line) - (end_marker - line))) { end_seen = 1; } } } } if(m_logend && !end_seen) { fprintf(stderr, "NOTICE: no end marker seen, log rotation? (expect %."SEQDIG"ld)\n", m_nr); } return err; } static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - an utility to sign and verify the integrity of log data.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -s|S [-e] [-v] [-u ] [-f ] [-a 'sha1'|'sha256']\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s is a log data integrity check tool. It reads log data\n", cmd); qs_man_print(man, "from stdin (pipe) and writes the data to stdout adding a sequence\n"); qs_man_print(man, "number and signatur to ever log line.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -s \n"); if(man) printf("\n"); qs_man_print(man, " Passphrase used to calculate signature.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -S \n"); if(man) printf("\n"); qs_man_print(man, " Specifies a program which writes the passphrase to stdout.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -e\n"); if(man) printf("\n"); qs_man_print(man, " Writes end marker when stopping data signing.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -v\n"); if(man) printf("\n"); qs_man_print(man, " Verification mode checking the integrity of signed data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -u \n"); if(man) printf("\n"); qs_man_print(man, " Becomes another user, e.g. www-data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -f \n"); if(man) printf("\n"); qs_man_print(man, " Filter pattern (case sensitive regular expression) for messages\n"); qs_man_print(man, " which do not need to be signed.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -a 'sha1'|'sha256'\n"); if(man) printf("\n"); qs_man_print(man, " Specifes the algorithm to use. Default is sha1.\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); printf("Sign:\n"); printf("\n"); } else { printf("Example (sign):\n"); } qs_man_println(man, " TransferLog \"|/bin/%s -s password -e |/bin/qsrotate -o /var/log/apache/access_log\"\n", cmd); printf("\n"); if(man) { printf("\n"); printf("Verify:\n"); printf("\n"); } else { qs_man_print(man, "Example (verify):\n"); } qs_man_println(man, " cat access_log | %s -s password -v\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } int main(int argc, const char * const argv[]) { apr_pool_t *pool; int verify = 0; char *cmd = strrchr(argv[0], '/'); const char *username = NULL; const char *filter = NULL; if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); m_evp = EVP_sha1(); argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-s") == 0) { if (--argc >= 1) { m_sec = *(++argv); } } else if(strcmp(*argv,"-S") == 0) { if (--argc >= 1) { m_sec = qs_readpwd(pool, *(++argv)); } } else if(strcmp(*argv,"-v") == 0) { verify = 1; } else if(strcmp(*argv,"-e") == 0) { m_logend = 1; } else if(strcmp(*argv,"-u") == 0) { /* switch user id */ if (--argc >= 1) { username = *(++argv); } } else if(strcmp(*argv,"-f") == 0) { /* filter */ if (--argc >= 1) { filter = *(++argv); } } else if(strcmp(*argv,"-a") == 0) { /* set alg */ if (--argc >= 1) { const char *alg = *(++argv); if(strcasecmp(alg, "SHA256") == 0) { m_evp = EVP_sha256(); } else if(strcasecmp(alg, "SHA1") != 0) { m_evp = NULL; } } else { m_evp = NULL; } } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } argc--; argv++; } if(filter != NULL) { const char *errptr = NULL; int erroffset; m_filter = pcre_compile(filter, 0, &errptr, &erroffset, NULL); if(m_filter == NULL) { fprintf(stderr, "failed to compile filter pattern <%s> at position %d," " reason: %s\n", filter, erroffset, errptr); exit(1); } } if(m_evp == NULL) { usage(cmd, 0); } if(m_sec == NULL) { usage(cmd, 0); } qs_setuid(username, cmd); if(verify) { long err = qs_verify(m_sec); if(err != 0) { return 1; } } else { if(m_logend) { signal(SIGTERM, qs_signal_exit); } qs_sign(m_sec); if(m_logend && (m_end != NULL)) { m_end(m_sec); } } apr_pool_destroy(pool); return 0; } mod_qos-11.36/tools/src/qslog.c0000644000000000000020000020330213016363764014703 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Utilities for the quality of service module mod_qos. * * Real time access log data correlation. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qslog.c,v 1.105 2016/11/17 06:37:30 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include #include /* apr */ #include #include #include #include #include "qs_util.h" /* ---------------------------------- * definitions * ---------------------------------- */ #define ACTIVE_TIME 600 /* how long is a client "active" (ip addresses seen in the log) */ #define LOG_INTERVAL 60 /* log interval ist 60 sec, don't change this value */ #define QS_GC_INTERVAL 10 #define LOG_DET ".detailed" #define RULE_DELIM ':' #define MAX_CLIENT_ENTRIES 25000 #define MAX_EVENT_ENTRIES 50000 #define NUM_EVENT_TABLES 8 #define QS_GENERATIONS 14 #define EVENT_DELIM ',' #define QSEVENTPATH "QSEVENTPATH" /* varibale name to find event definitions */ /* ---------------------------------- * structures * ---------------------------------- */ typedef struct { long request_count; long status_1; long status_2; long status_3; long status_4; long status_5; long long duration_count_ms; } url_rec_t; typedef struct { long request_count; long error_count; long long byte_count; long long duration; long long duration_count_ms; long duration_0; long duration_1; long duration_2; long duration_3; long duration_4; long duration_5; long duration_6; long status_1; long status_2; long status_3; long status_4; long status_5; long status_304; long connections; apr_table_t *events; apr_pool_t *pool; long get; long post; long html; long img; long cssjs; long other; time_t start_s; time_t end_s; long firstLine; long lastLine; } client_rec_t; typedef struct stat_rec_st { // id char *id; regex_t preg; struct stat_rec_st *next; // counters long line_count; long long i_byte_count; long long byte_count; long long duration_count; long long duration_count_ms; long duration_0; long duration_1; long duration_2; long duration_3; long duration_4; long duration_5; long duration_6; long connections; unsigned long long sum; unsigned long long average; long average_count; unsigned long long averAge; long averAge_count; long status_1; long status_2; long status_3; long status_4; long status_5; long qos_V; long qos_v; long qos_s; long qos_d; long qos_k; long qos_t; long qos_l; long qos_ser; long qos_a; long qos_u; apr_table_t *events; apr_pool_t *pool; } stat_rec_t; typedef struct qs_event_st { char *id; /**< id, e.g. ip address or client correlator string */ time_t time; /**< last update, used for expiration */ long count; /**< event count/updates */ } qs_event_t; /* ---------------------------------- * global stat counter * ---------------------------------- */ static stat_rec_t* m_stat_rec; static stat_rec_t* m_stat_sub = NULL; static time_t m_qs_expiration = 60 * 10; static apr_table_t *m_ip_list[NUM_EVENT_TABLES]; /* IP session store */ static apr_table_t *m_user_list[NUM_EVENT_TABLES]; /* user session store */ static int m_log_max = 0; /* already reached store limit */ static int m_hasGC = 0; /* sep. gc thread or not */ static qs_event_t **m_gc_event_list = NULL; /* list of entries to delete */ /* output file */ static FILE *m_f = NULL; static FILE *m_f2 = NULL; static char m_file_name[MAX_LINE]; static char m_file_name2[MAX_LINE]; static int m_rotate = 0; static int m_generations = QS_GENERATIONS; /* regex to search the time string */ static regex_t m_trx_access; static regex_t m_trx_j; static regex_t m_trx_g; /* real time mode (default) or offline */ static int m_off = 0; static int m_offline = 0; static int m_offline_data = 0; static char m_date_str[MAX_LINE]; static int m_mem = 0; static int m_avms = 0; static int m_ct = 0; static int m_customcounter = 0; static apr_table_t *m_client_entries = NULL; static int m_max_entries = 0; static int m_offline_count = 0; static apr_table_t *m_url_entries = NULL; static int m_offline_url = 0; static int m_offline_url_cropped = 0; static int m_methods = 0; /* debug/offline */ static long m_lines = 0; static int m_verbose = 0; /* enable/disable event counter */ static int m_hasEV = 0; /* events ----------------------------------------------------- */ /* * sets the expiration for events */ void qs_setExpiration(time_t sec) { m_qs_expiration = sec; } /* * creates a new event entry */ static qs_event_t *qs_newEvent(const char *id) { qs_event_t *ev = calloc(sizeof(qs_event_t), 1); ev->id = calloc(strlen(id) + 1, 1); strcpy(ev->id, id); qs_time(&ev->time); ev->count = 1; return ev; } /* * deletes an event */ void qs_freeEvent(qs_event_t *ev) { free(ev->id); free(ev); } /** * Defines in which of the NUM_EVENT_TABLES session stores * the id shall be added. * * @param str Session ID to store * @return The id of the storage table (0 <= n < NUM_EVENT_TABLES) */ static int qs_tableSelector(const char *str) { int num = 0; int len = strlen(str); if(len > 3) { if(str[len-1] == '=' || str[len-1] == '\'' || str[len-1] == '"') { len--; } } if(str[0] % 2 == 1) { num += 1; } if(len > 1) { if(str[len-1] % 2 == 1) { num += 2; } if(len > 2) { if(str[len-2] % 2 == 1) { num += 4; } } } return num; } /** * Inserts an event entry and delets expired. * * @param l_qs_event Pointer to the event list. * @param id Identifer, e.g. IP address or user tracking cookie * * @return event counter (number of updates) for the provided id */ static long qs_insertEventT(apr_table_t **list0, const char *id) { qs_event_t *lp; int select = qs_tableSelector(id); apr_table_t *list = list0[select]; lp = (qs_event_t *)apr_table_get(list, id); if(lp) { // exists qs_time(&lp->time); lp->count++; return lp->count; } if(apr_table_elts(list)->nelts >= MAX_EVENT_ENTRIES) { if(m_log_max == 0) { char time_string[1024]; time_t tm = time(NULL); struct tm *ptr = localtime(&tm); strftime(time_string, sizeof(time_string), "%a %b %d %H:%M:%S %Y", ptr); fprintf(stderr, "[%s] [notice] qslog: reached event count limit\n", time_string); m_log_max = 1; } return 0; } lp = qs_newEvent(id); apr_table_setn(list, lp->id, (char *)lp); return lp->count; } /** * deletes expired events */ static void gcTable(apr_table_t *list) { int max = 0; int i; apr_table_entry_t *entry; time_t gmt_time; qs_time(&gmt_time); if(m_hasGC) { qs_csLock(); } // collect expired events... entry = (apr_table_entry_t *) apr_table_elts(list)->elts; for(i = 0; i < apr_table_elts(list)->nelts; i++) { qs_event_t *lp = (qs_event_t *)entry[i].val; if(lp->time < (gmt_time - m_qs_expiration)) { m_gc_event_list[max] = lp; max++; } } // ...remove... for(i = 0; i < max; i++) { if(m_hasGC) { /* we don't want to hold a lock for a long time => temp release the lock letting the pipe-buffer recover */ if(i % 10 == 9) { qs_csUnLock(); // wait 1ms apr_sleep(1000); qs_csLock(); } } apr_table_unset(list, m_gc_event_list[i]->id); } if(m_hasGC) { qs_csUnLock(); } // ...and delete them for(i = 0; i < max; i++) { qs_freeEvent(m_gc_event_list[i]); } } /** * Returns the number of events * * @param event table * @return Number of entries */ static long qs_countEventT(apr_table_t **list) { int count = 0; int t; if(!m_hasGC) { for(t = 0; t < NUM_EVENT_TABLES; t++) { gcTable(list[t]); } } for(t = 0; t < NUM_EVENT_TABLES; t++) { count += apr_table_elts(list[t])->nelts; } return count; } /** * Calls the event table GC */ static void *gcThread(void *argv) { int t; m_hasGC = 1; while(1) { sleep(QS_GC_INTERVAL); for(t = 0; t < NUM_EVENT_TABLES; t++) { gcTable(m_ip_list[t]); gcTable(m_user_list[t]); } } return NULL; } /* ------------------------------------------------------------ */ /** * Helper to print an error message when terminating * the programm due to an unexpected error. */ static void qerror(const char *fmt,...) { char buf[MAX_LINE]; va_list args; time_t t = time(NULL); char *time_string = ctime(&t); va_start(args, fmt); vsprintf(buf, fmt, args); time_string[strlen(time_string) - 1] = '\0'; fprintf(stderr, "[%s] [error] qslog: %s\n", time_string, buf); fflush(stderr); } /* * Similar to standard strstr() but we ignore case in this version. * see server/util.c */ static char *qsstrcasestr(const char *s1, const char *s2) { char *p1, *p2; if (*s2 == '\0') { /* an empty s2 */ return((char *)s1); } while(1) { for ( ; (*s1 != '\0') && (tolower(*s1) != tolower(*s2)); s1++); if (*s1 == '\0') { return(NULL); } /* found first character of s2, see if the rest matches */ p1 = (char *)s1; p2 = (char *)s2; for (++p1, ++p2; tolower(*p1) == tolower(*p2); ++p1, ++p2) { if (*p1 == '\0') { /* both strings ended together */ return((char *)s1); } } if (*p2 == '\0') { /* second string ended, a match */ break; } /* didn't find a match here, try starting at next character in s1 */ s1++; } return((char *)s1); } /* * skip an element to the next space */ static char *skipElement(const char* line) { char *p = (char *)line; /* check for quotes (double or single) */ char delim = p[0]; if(delim == '\'' || delim == '\"') { p++; // read while we found an '" '" which is not escaped while(p[0] != 0 && !(p[0] == delim && p[-1] != '\\' && (p[1] == '\0' || p[1] == ' '))) { p++; } p++; } else { char *eq = NULL; if(m_off) { // offline mode: check for ='' entry eq = strstr(p, "='"); if(eq && (eq - p) < 10) { // near hit p = &eq[3]; while(p[0] != '\'' && p[0] != 0 && p[-1] != '\\') { p++; } p++; } else { // something else... eq=NULL; } } if(!eq) { while(p[0] != ' ' && p[0] != 0) { p++; } } } while(p[0] == ' ') { p++; } return p; } /** * Cut fp */ static void qsNoFloat(char *s) { char *pn = strchr(s, '.'); if(pn) { pn[0] = '\0'; } else { pn = strchr(s, ','); if(pn) { pn[0] = '\0'; } } } /** * Strip a number. */ static void stripNum(char **p) { char *s = *p; int len; while(s && s[0] && (s[0] < '0' || s[0] > '9')) { s++; } len = strlen(s); while(len > 0 && (s[len] < '0' || s[len] > '9')) { s[len] = '\0'; len--; } *p = s; } /** * Get and cut an element. * * @param line Line to parse for the next element. * @return Pointer to the next element. */ static char *cutNext(char **line) { char *c = *line; char *p = skipElement(*line); char delim; *line = p; if(p[0]) { p--; p[0] = '\0'; } /* cut leading and tailing " */ delim = c[0]; if(delim == '\'' || delim == '\"') { int len; c++; len = strlen(c); while(len > 0 && c[strlen(c)-1] == delim) { c[strlen(c)-1] = '\0'; len--; } } return c; } /** * Calculates the free system memory. Experimental code. * Tested on Solaris (calling vmstat) and Linux (reading * from /proc/meminfo). * * @param buf Buffer to write result to * @sz Max. length of the buffer */ static void getFreeMem(char *buf, int sz) { FILE *f = fopen("/proc/meminfo", "r"); int mem = 0; buf[0] = '\0'; if(f) { char line[MAX_LINE]; while(!qs_getLinef(line, sizeof(line), f)) { if(strncmp(line, "MemFree: ", 9) == 0) { char *c = &line[9]; char *e; while(c[0] && ((c[0] == ' ') || (c[0] == '\t'))) c++; e = c; while(e[0] && (e[0] != ' ')) e++; e[0] = '\0'; mem = mem + atoi(c); } if(strncmp(line, "Cached: ", 8) == 0) { char *c = &line[8]; char *e; while(c[0] && ((c[0] == ' ') || (c[0] == '\t'))) c++; e = c; while(e[0] && (e[0] != ' ')) e++; e[0] = '\0'; mem = mem + atoi(c); } } fclose(f); snprintf(buf, sz, "%d", mem); } else { // non linux //#ifdef _SC_AVPHYS_PAGES // long pageSize = sysconf(_SC_PAGESIZE); // long freePages = sysconf(_SC_AVPHYS_PAGES); // mem = pageSize * freePages / 1024; // snprintf(buf, sz, "%d", mem); //#else /* fallback using vmstat (experimental code) */ char vmstat[] = "/usr/bin/vmstat"; struct stat attr; if(stat(vmstat, &attr) == 0) { char command[1024]; char outfile[1024]; snprintf(outfile, sizeof(outfile), "/tmp/qslog.%d", getpid()); snprintf(command, sizeof(command), "%s 1 2 1>%s", vmstat, outfile); system(command); f = fopen(outfile, "r"); if(f) { char line[MAX_LINE]; int i = 1; while(!qs_getLinef(line, sizeof(line), f)) { if(i == 4) { // free memory only (ignores cache) int j = 0; char *p = line; while(p && j < 4) { p++; p = strchr(p, ' '); j++; } if(p && (j == 4)) { char *e; p++; e = strchr(p, ' '); if(e) { e[0] = '\0'; snprintf(buf, sz, "%s", p); } } break; } i++; } fclose(f); unlink(outfile); } } //#endif } } /* value names in csv output */ #define NRS "r/s" #define NBS "b/s" #define NBIS "ib/s" #define NAV "av" #define NAVMS "avms" /** * Writes the statistic entry stat_rec to the file. * * @param f File to write to * @param timeStr Time string (prefix) * @param stat_rec Data to write * @offline Offline mode (less data, e.g. no load) * @param main Indicates if it is the main log or a sub entry for the detailed log * @param av Load * @param mem Free memory */ static void printStat2File(FILE *f, char *timeStr, stat_rec_t *stat_rec, int offline, int main, double *av, const char *mem) { char bis[256]; char esco[256]; char ip[256]; char usr[256]; char avms[256]; char custom[256]; bis[0] = '\0'; esco[0] = '\0'; avms[0] = '\0'; custom[0] = '\0'; if(stat_rec->i_byte_count != -1) { sprintf(bis, NBIS";%lld;", stat_rec->i_byte_count/LOG_INTERVAL); } if(main && stat_rec->connections != -1) { sprintf(esco, "esco;%ld;", stat_rec->connections); } if(m_avms) { sprintf(avms, NAVMS";%lld;", stat_rec->duration_count_ms/(stat_rec->line_count == 0 ? 1 : stat_rec->line_count)); // improve accuracy (rounding errors): stat_rec->duration_count = stat_rec->duration_count_ms / 1000; } if(m_customcounter) { // max len: 18446744073709551615 sprintf(custom, "s;%llu;a;%llu;A;%llu;", stat_rec->sum, stat_rec->average / (stat_rec->average_count == 0 ? 1 : stat_rec->average_count), stat_rec->averAge / (stat_rec->averAge_count == 0 ? 1 : stat_rec->averAge_count)); } if(main) { sprintf(ip, "ip;%ld;", qs_countEventT(m_ip_list)); sprintf(usr, "usr;%ld;", qs_countEventT(m_user_list)); } else { ip[0] = '\0'; usr[0] = '\0'; } fprintf(f, "%s;" "%s" NRS";%ld;" "req;%ld;" NBS";%lld;" "%s" "%s" "1xx;%ld;" "2xx;%ld;" "3xx;%ld;" "4xx;%ld;" "5xx;%ld;" "%s" NAV";%lld;" "<1s;%ld;" "1s;%ld;" "2s;%ld;" "3s;%ld;" "4s;%ld;" "5s;%ld;" ">5s;%ld;" "%s" "%s" , timeStr, main ? "" : stat_rec->id, stat_rec->line_count/LOG_INTERVAL, stat_rec->line_count, stat_rec->byte_count/LOG_INTERVAL, bis, esco, stat_rec->status_1, stat_rec->status_2, stat_rec->status_3, stat_rec->status_4, stat_rec->status_5, avms, stat_rec->duration_count/(stat_rec->line_count == 0 ? 1 : stat_rec->line_count), stat_rec->duration_0, stat_rec->duration_1, stat_rec->duration_2, stat_rec->duration_3, stat_rec->duration_4, stat_rec->duration_5, stat_rec->duration_6, ip, usr ); if(m_hasEV) { fprintf(f, "qV;%ld;" "qv;%ld;" "qS;%ld;" "qD;%ld;" "qK;%ld;" "qT;%ld;" "qL;%ld;" "qs;%ld;" "qA;%ld;" "qu;%ld;", stat_rec->qos_V, stat_rec->qos_v, stat_rec->qos_s, stat_rec->qos_d, stat_rec->qos_k, stat_rec->qos_t, stat_rec->qos_l, stat_rec->qos_ser, stat_rec->qos_a, stat_rec->qos_u); } fprintf(f, "%s", custom); stat_rec->line_count = 0; stat_rec->byte_count = 0; if(stat_rec->i_byte_count != -1) { stat_rec->i_byte_count = 0; } if(main && (stat_rec->connections != -1)) { stat_rec->connections = 0; } stat_rec->sum = 0; stat_rec->average = 0; stat_rec->average_count = 0; stat_rec->averAge = 0; stat_rec->averAge_count = 0; stat_rec->status_1 = 0; stat_rec->status_2 = 0; stat_rec->status_3 = 0; stat_rec->status_4 = 0; stat_rec->status_5 = 0; stat_rec->duration_count = 0; stat_rec->duration_count_ms = 0; stat_rec->duration_0 = 0; stat_rec->duration_1 = 0; stat_rec->duration_2 = 0; stat_rec->duration_3 = 0; stat_rec->duration_4 = 0; stat_rec->duration_5 = 0; stat_rec->duration_6 = 0; stat_rec->qos_V = 0; stat_rec->qos_v = 0; stat_rec->qos_s = 0; stat_rec->qos_d = 0; stat_rec->qos_k = 0; stat_rec->qos_t = 0; stat_rec->qos_l = 0; stat_rec->qos_ser = 0; stat_rec->qos_a = 0; stat_rec->qos_u = 0; if(main) { if(!offline) { fprintf(f, "sl;%.2f;", av[0]); if(m_mem) { fprintf(f, "m;%s;", mem[0] ? mem : "-"); } } else { m_offline_data = 0; } } if(apr_table_elts(stat_rec->events)->nelts > 0) { int i; apr_table_entry_t *entry = (apr_table_entry_t *) apr_table_elts(stat_rec->events)->elts; for(i = 0; i < apr_table_elts(stat_rec->events)->nelts; i++) { const char *eventName = entry[i].key; int *eventVal = (int *)entry[i].val; fprintf(f, "%s;%d;", eventName, *eventVal); (*eventVal) = 0; } } fprintf(f, "\n"); } static void qs_updateEvents(apr_pool_t *pool, char *E, apr_table_t *events) { if(!E[0]) { return; } while(E) { char *restore = NULL; char *sep = strchr(E, EVENT_DELIM); int *val; if(sep) { sep[0] = '\0'; restore = sep; sep++; } if(isalnum(E[0])) { val = (int *)apr_table_get(events, E); if(val) { (*val)++; } else { // new event char *name = apr_pstrdup(pool, E); val = apr_pcalloc(pool, sizeof(int)); (*val) = 1; apr_table_setn(events, name, (char *)val); } } E = sep; if(restore) { // suports multiple parsing of the event string restore[0] = EVENT_DELIM; } } } /** * Initializes the event table by the events specified within the * file whose path is defined by the QSEVENTPATH environment * variable. * * @param pool To allocate memory * @param events Table to init */ static void qsInitEvent(apr_pool_t *pool, apr_table_t *events) { const char *envFile = getenv(QSEVENTPATH); if(envFile != NULL) { FILE *file = fopen(envFile, "r"); if(file != NULL) { char line[MAX_LINE]; while(!qs_getLinef(line, sizeof(line), file)) { char *p = line; char *name; int *val; while(p && p[0]) { /* file contains a list of known events (comma sep. event names on one or multiple lines) */ char *n = strchr(p, EVENT_DELIM); if(n) { n[0] = '\0'; n++; } name = apr_pstrdup(pool, p); val = apr_pcalloc(pool, sizeof(int)); (*val) = 0; apr_table_setn(events, name, (char *)val); p = n; } } fclose(file); } } } /** * Creates and init new status rec * * @param id Identification of the id * @param pattern Pattern to match the log data line * @return */ static stat_rec_t *createRec(apr_pool_t *pool, const char *id, const char *pattern) { stat_rec_t *rec = calloc(sizeof(stat_rec_t), 1); rec->id = calloc(strlen(id)+2, 1); sprintf(rec->id, "%s;", id); rec->id[strlen(id)+1] = '\0'; if(regcomp(&rec->preg, pattern, REG_EXTENDED)) { qerror("failed to compile pattern %s", pattern); exit(1); } rec->next = NULL; rec->line_count = 0; rec->i_byte_count = -1; rec->byte_count = 0; rec->duration_count = 0; rec->duration_count_ms = 0; rec->duration_0 = 0; rec->duration_1 = 0; rec->duration_2 = 0; rec->duration_3 = 0; rec->duration_4 = 0; rec->duration_5 = 0; rec->duration_6 = 0; rec->connections = -1; rec->sum = 0; rec->average = 0; rec->average_count = 0; rec->averAge = 0; rec->averAge_count = 0; rec->status_1 = 0; rec->status_2 = 0; rec->status_3 = 0; rec->status_4 = 0; rec->status_5 = 0; rec->qos_V = 0; rec->qos_v = 0; rec->qos_s = 0; rec->qos_d = 0; rec->qos_k = 0; rec->qos_t = 0; rec->qos_l = 0; rec->qos_ser = 0; rec->qos_a = 0; rec->qos_u = 0; rec->events = apr_table_make(pool, 300); rec->pool = pool; qsInitEvent(pool, rec->events); return rec; } /** * Retrieves the best matching record (longest match( * * @param Parameter to match, e.g. URL * @return Matching entry (NULL if no match) */ static stat_rec_t *getRec(const char *value) { regmatch_t ma[1]; int len = 0; stat_rec_t *r = m_stat_sub; stat_rec_t *rec = NULL; while(r) { if(regexec(&r->preg, value, 1, ma, 0) == 0) { int l = ma[0].rm_eo - ma[0].rm_so + 1; if(l > len) { // longest match len = l; rec = r; } } r = r->next; } return rec; } /** * writes all stat data to the out file * an resets all counters. * * @param timeStr */ static void printAndResetStat(char *timeStr) { stat_rec_t *r = m_stat_sub; double av[1]; char mem[256]; if(!m_offline) { getloadavg(av, 1); if(m_mem) { getFreeMem(mem, sizeof(mem)); } else { mem[0] = '\0'; } } else { mem[0] = '\0'; } qs_csLock(); printStat2File(m_f, timeStr, m_stat_rec, m_offline, 1, av, mem); while(r) { printStat2File(m_f2, timeStr, r, m_offline, 0, av, mem); r = r->next; } qs_csUnLock(); fflush(m_f); if(m_f2) { fflush(m_f2); } } /** * Updates the per url records */ static void updateUrl(apr_pool_t *pool, char *R, char *S, long tmems) { url_rec_t *url_rec; char *marker; if(R == NULL) { return; } if(!isalpha(R[0])) { fprintf(stdout, "A(%ld)", m_lines); return; } marker = strchr(R, ' '); if(marker == NULL) { fprintf(stdout, "E(%ld)", m_lines); return; } marker[0] = ';'; marker = strrchr(R, ' '); if(marker) { marker[0] = '\0'; } marker = strchr(R, '?'); if(marker) { marker[0] = '\0'; } if(m_offline_url_cropped) { char *root = strchr(R, '/'); marker = strrchr(R, '/'); if(marker && marker != root) { marker[0] = '\0'; } } url_rec = (url_rec_t *)apr_table_get(m_url_entries, R); if(url_rec == NULL) { if(apr_table_elts(m_url_entries)->nelts >= MAX_CLIENT_ENTRIES) { // limitation if(!m_max_entries) { fprintf(stderr, "\nreached max url entries (%d)\n", MAX_CLIENT_ENTRIES); m_max_entries = 1; } return; } url_rec = apr_pcalloc(pool, sizeof(url_rec_t)); url_rec->request_count = 0; url_rec->status_1 = 0; url_rec->status_2 = 0; url_rec->status_3 = 0; url_rec->status_4 = 0; url_rec->status_5 = 0; url_rec->duration_count_ms = 0; apr_table_setn(m_url_entries, apr_pstrdup(pool, R), (char *)url_rec); } url_rec->request_count++; if(S) { if(S[0] == '1') { url_rec->status_1++; } else if(S[0] == '1') { url_rec->status_1++; } else if(S[0] == '2') { url_rec->status_2++; } else if(S[0] == '3') { url_rec->status_3++; } else if(S[0] == '4') { url_rec->status_4++; } else if(S[0] == '5') { url_rec->status_5++; } } url_rec->duration_count_ms += tmems; } /** * Updates the per client record */ static void updateClient(apr_pool_t *pool, char *T, char *t, char *D, char *S, char *BI, char *B, char *R, char *I, char *U, char *Q, char *E, char *k, char *C, char *ct, long tme, long tmems, char *m) { client_rec_t *client_rec; const char *id = I; // ip if(id == NULL) { id = U; // user } if(id == NULL) { return; } client_rec = (client_rec_t *)apr_table_get(m_client_entries, id); if(client_rec == NULL) { char *tid; if(apr_table_elts(m_client_entries)->nelts >= MAX_CLIENT_ENTRIES) { // limitation: speed (table to big) and memory if(!m_max_entries) { fprintf(stderr, "\nreached max client entries (%d)\n", MAX_CLIENT_ENTRIES); m_max_entries = 1; } return; } tid = calloc(strlen(id)+1, 1); client_rec = calloc(sizeof(client_rec_t), 1); strcpy(tid, id); tid[strlen(id)] = '\0'; client_rec->request_count = 0; client_rec->error_count = 0; client_rec->byte_count = 0; client_rec->duration = 0; client_rec->duration_count_ms = 0; client_rec->duration_0 = 0; client_rec->duration_1 = 0; client_rec->duration_2 = 0; client_rec->duration_3 = 0; client_rec->duration_4 = 0; client_rec->duration_5 = 0; client_rec->duration_6 = 0; client_rec->status_1 = 0; client_rec->status_2 = 0; client_rec->status_3 = 0; client_rec->status_4 = 0; client_rec->status_5 = 0; client_rec->status_304 = 0; client_rec->connections = 0; client_rec->events = apr_table_make(pool, 100); client_rec->pool = pool; client_rec->get = 0; client_rec->post = 0; client_rec->html = 0; client_rec->img = 0; client_rec->cssjs = 0; client_rec->other = 0; qs_time(&client_rec->start_s); client_rec->end_s = client_rec->start_s + 1; // +1 prevents div by 0 client_rec->firstLine = m_lines; qsInitEvent(pool, client_rec->events); apr_table_setn(m_client_entries, tid, (char *)client_rec); } else { qs_time(&client_rec->end_s); } client_rec->lastLine = m_lines; client_rec->request_count++; client_rec->duration += tme; client_rec->duration_count_ms += tmems; if(k != NULL) { if(k[0] == '0' && k[1] == '\0') { client_rec->connections++; } } if(tme < 1) { client_rec->duration_0++; } else if(tme == 1) { client_rec->duration_1++; } else if(tme == 2) { client_rec->duration_2++; } else if(tme == 3) { client_rec->duration_3++; } else if(tme == 4) { client_rec->duration_4++; } else if(tme == 5) { client_rec->duration_5++; } else { client_rec->duration_6++; } if(B != NULL) { client_rec->byte_count += atol(B); } if(ct) { if(qsstrcasestr(ct, "html")) { client_rec->html++; } else if(qsstrcasestr(ct, "image")) { client_rec->img++; } else if(qsstrcasestr(ct, "css")) { client_rec->cssjs++; } else if(qsstrcasestr(ct, "javascript")) { client_rec->cssjs++; } else { client_rec->other++; } } if(m) { if(strcasecmp(m, "get") == 0) { client_rec->get++; } else if(strcasecmp(m, "post") == 0) { client_rec->post++; } } if(S != NULL) { if(strcmp(S, "200") != 0 && strcmp(S, "304") != 0 && strcmp(S, "302") != 0) { client_rec->error_count++; } if(S[0] == '1') { client_rec->status_1++; } else if(S[0] == '1') { client_rec->status_1++; } else if(S[0] == '2') { client_rec->status_2++; } else if(S[0] == '3') { client_rec->status_3++; if(S[1] == '0' && S[2] == '4') { client_rec->status_304++; } } else if(S[0] == '4') { client_rec->status_4++; } else if(S[0] == '5') { client_rec->status_5++; } } if(E != NULL) { qs_updateEvents(client_rec->pool, E, client_rec->events); } return; } /** * Updates standard record */ static void updateRec(stat_rec_t *rec, char *T, char *t, char *D, char *S, char *s, char *a, char *A, char *BI, char *B, char *R, char *I, char *U, char *Q, char *E, char *k, char *C, long tme, long tmems) { if(Q != NULL) { if(strchr(Q, 'V') != NULL) { rec->qos_V++; } if(strchr(Q, 'v') != NULL) { rec->qos_v++; } if(strchr(Q, 'S') != NULL) { rec->qos_s++; } if(strchr(Q, 'D') != NULL) { rec->qos_d++; } if(strchr(Q, 'K') != NULL) { rec->qos_k++; } if(strchr(Q, 'T') != NULL) { rec->qos_t++; } if(strchr(Q, 'L') != NULL) { rec->qos_l++; } if(strchr(Q, 's') != NULL) { rec->qos_ser++; } if(strchr(Q, 'A') != NULL) { rec->qos_a++; } if(strchr(Q, 'u') != NULL) { rec->qos_u++; } } if(E != NULL) { qs_updateEvents(rec->pool, E, rec->events); } if(I != NULL) { /* update/store client IP */ qs_insertEventT(m_ip_list, I); } if(U != NULL) { /* update/store user */ qs_insertEventT(m_user_list, U); } if(B != NULL) { /* transferred bytes */ rec->byte_count += atoi(B); } if(BI != NULL) { /* transferred bytes */ rec->i_byte_count += atoi(BI); } if(k != NULL) { if(k[0] == '0' && k[1] == '\0') { rec->connections++; } } if(s != NULL) { rec->sum += atol(s); } if(a != NULL && a[0]) { rec->average += atol(a); rec->average_count++; } if(A != NULL && A[0]) { rec->averAge += atol(A); rec->averAge_count++; } if(S != NULL) { if(S[0] == '1') { rec->status_1++; } else if(S[0] == '1') { rec->status_1++; } else if(S[0] == '2') { rec->status_2++; } else if(S[0] == '3') { rec->status_3++; } else if(S[0] == '4') { rec->status_4++; } else if(S[0] == '5') { rec->status_5++; } } if(T != NULL || t != NULL || D != NULL) { /* response duration */ rec->duration_count += tme; rec->duration_count_ms += tmems; if(tme < 1) { rec->duration_0++; } else if(tme == 1) { rec->duration_1++; } else if(tme == 2) { rec->duration_2++; } else if(tme == 3) { rec->duration_3++; } else if(tme == 4) { rec->duration_4++; } else if(tme == 5) { rec->duration_5++; } else { rec->duration_6++; } } /* request counter */ rec->line_count++; } /* * updates the counters based on the information * found in the current access log line * * . = any string to skip till the next [space] * T = duration * B = bytes * * Example: * 127.0.0.1 [03/Nov/2006:21:06:41 +0100] "GET /index.html HTTP/1.1" 200 2836 "Wget/1.9.1" 0 * . . . R . T */ static void updateStat(apr_pool_t *pool, const char *cstr, char *line) { stat_rec_t *rec = NULL; char *T = NULL; /* time */ char *t = NULL; /* time ms */ char *D = NULL; /* time us */ char *S = NULL; /* status */ char *BI = NULL; /* bytes in */ char *B = NULL; /* bytes */ char *R = NULL; /* request line */ char *I = NULL; /* client ip */ char *U = NULL; /* user */ char *Q = NULL; /* mod_qos event message */ char *k = NULL; /* connections (keep alive requests = 0) */ char *C = NULL; /* custom patter matching the config file */ char *s = NULL; /* sum */ char *a = NULL; /* avarage 1 */ char *A = NULL; /* average 2 */ char *E = NULL; /* events */ char *ct = NULL; /* content type */ char *m = NULL; /* method */ const char *c = cstr; char *l = line; long tme; long tmems; if(!line[0]) return; if(m_off) { m_lines++; } while(c[0]) { /* process known types */ if(c[0] == '.') { if(l != NULL && l[0] != '\0') { l = skipElement(l); } } else if(c[0] == 'T') { if(l != NULL && l[0] != '\0') { T = cutNext(&l); } } else if(c[0] == 't') { if(l != NULL && l[0] != '\0') { t = cutNext(&l); } } else if(c[0] == 'D') { if(l != NULL && l[0] != '\0') { D = cutNext(&l); } } else if(c[0] == 'S') { if(l != NULL && l[0] != '\0') { S = cutNext(&l); } } else if(c[0] == 'B') { if(l != NULL && l[0] != '\0') { B = cutNext(&l); } } else if(c[0] == 'i') { if(l != NULL && l[0] != '\0') { BI = cutNext(&l); } } else if(c[0] == 'k') { if(l != NULL && l[0] != '\0') { k = cutNext(&l); } } else if(c[0] == 'C') { if(l != NULL && l[0] != '\0') { C = cutNext(&l); } } else if(c[0] == 'c') { if(l != NULL && l[0] != '\0') { ct = cutNext(&l); } } else if(c[0] == 'm') { if(l != NULL && l[0] != '\0') { m = cutNext(&l); } } else if(c[0] == 'R') { if(l != NULL && l[0] != '\0') { R = cutNext(&l); } } else if(c[0] == 'I') { if(l != NULL && l[0] != '\0') { I = cutNext(&l); } } else if(c[0] == 'U') { if(l != NULL && l[0] != '\0') { U = cutNext(&l); } } else if(c[0] == 'Q') { if(l != NULL && l[0] != '\0') { Q = cutNext(&l); } } else if(c[0] == 's') { if(l != NULL && l[0] != '\0') { s = cutNext(&l); } } else if(c[0] == 'a') { if(l != NULL && l[0] != '\0') { a = cutNext(&l); } } else if(c[0] == 'A') { if(l != NULL && l[0] != '\0') { A = cutNext(&l); } } else if(c[0] == 'E') { if(l != NULL && l[0] != '\0') { E = cutNext(&l); } } else if(c[0] == ' ') { /* do nothing */ } else { /* undefined/unknown char, skip it */ if(l != NULL && l[0] != '\0') { l++; } } c++; } if(C) { rec = getRec(C); } qs_csLock(); if(B != NULL) { /* transferred bytes */ stripNum(&B); } if(BI != NULL) { /* transferred bytes */ stripNum(&BI); } if(k != NULL) { stripNum(&k); } if(S != NULL) { stripNum(&S); } if(s != NULL) { stripNum(&s); qsNoFloat(s); } if(a != NULL) { stripNum(&a); qsNoFloat(a); } if(A != NULL) { stripNum(&A); qsNoFloat(A); } tme = 0; if(T != NULL || t != NULL || D != NULL) { /* response duration */ tmems = 0; if(T) { stripNum(&T); tme = atol(T); } else if(t) { stripNum(&t); tmems= atol(t); tme = tmems / 1000; } else if(D) { stripNum(&D); tmems = atol(D); tmems = tmems / 1000; tme = tmems / 1000; } } if(m_offline_count) { updateClient(pool, T, t, D, S, BI, B, R, I, U, Q, E, k, C, ct, tme, tmems, m); } else if(m_offline_url) { if((tmems) == 0 && (tme > 0)) { tmems = 1000 * tme; } updateUrl(pool, R, S, tmems); } else { updateRec(m_stat_rec, T, t, D, S, s, a, A, BI, B, R, I, U, Q, E, k, C, tme, tmems); if(rec) { updateRec(rec, T, t, D, S, s, a, A, BI, B, R, I, U, Q, E, k, C, tme, tmems); } } qs_csUnLock(); if(m_verbose && m_off) { printf("[%ld] I=[%s] U=[%s] B=[%s] i=[%s] S=[%s] T=[%ld](%ld) Q=[%s] E=[%s] k=[%s] R=[%s]\n", m_lines, I == NULL ? "(null)" : I, U == NULL ? "(null)" : U, B == NULL ? "(null)" : B, BI == NULL ? "(null)" : BI, S == NULL ? "(null)" : S, tme, tmems, Q == NULL ? "(null)" : Q, E == NULL ? "(null)" : E, k == NULL ? "(null)" : k, R == NULL ? "(null)" : R ); } line[0] = '\0'; } /* * convert month string to int */ static int mstr2i(const char *m) { if(strcmp(m, "Jan") == 0) return 1; if(strcmp(m, "Feb") == 0) return 2; if(strcmp(m, "Mar") == 0) return 3; if(strcmp(m, "Apr") == 0) return 4; if(strcmp(m, "May") == 0) return 5; if(strcmp(m, "Jun") == 0) return 6; if(strcmp(m, "Jul") == 0) return 7; if(strcmp(m, "Aug") == 0) return 8; if(strcmp(m, "Sep") == 0) return 9; if(strcmp(m, "Oct") == 0) return 10; if(strcmp(m, "Nov") == 0) return 11; if(strcmp(m, "Dec") == 0) return 12; return 0; } /** * Extracts the time from the log line using the * Apache access default time format (%t) */ static time_t getMinutesAccessLog(char *line, regmatch_t ma) { time_t minutes = 0; int buf_len = ma.rm_eo - ma.rm_so + 1; char buf[buf_len]; strncpy(buf, &line[ma.rm_so], ma.rm_eo - ma.rm_so); buf[ma.rm_eo - ma.rm_so] = '\0'; /* dd/MMM/yyyy:hh:mm:ss */ /* cut seconds */ buf[strlen(buf)-3] = '\0'; /* get minutes */ minutes = minutes + (atoi(&buf[strlen(buf)-2])); /* cut minutes */ buf[strlen(buf)-3] = '\0'; /* get hours */ minutes = minutes + (atoi(&buf[strlen(buf)-2]) * 60); /* store date information */ { char *year; char *month; char *day; /* cut hours */ buf[strlen(buf)-3] = '\0'; year = &buf[strlen(buf)-4]; /* cut year */ buf[strlen(buf)-5] = '\0'; month = &buf[strlen(buf)-3]; /* cut month */ buf[strlen(buf)-4] = '\0'; day = buf; snprintf(m_date_str, sizeof(m_date_str), "%s.%02d.%s", day, mstr2i(month), year); } return minutes; } /** * Extracts the time from the log line using the * the time patterns "yyyy mm dd hh:mm:ss,mmm" or * "yyyy mm dd hh:mm:ss.mmm" */ static time_t getMinutesJLog(char *line, regmatch_t ma) { time_t minutes = 0; int buf_len = ma.rm_eo - ma.rm_so + 1; char buf[buf_len]; strncpy(buf, &line[ma.rm_so], ma.rm_eo - ma.rm_so); buf[ma.rm_eo - ma.rm_so] = '\0'; /* yyyy mm dd hh:mm:ss,mmm */ /* cut seconds */ buf[strlen(buf)-7] = '\0'; /* get minutes */ minutes = minutes + (atoi(&buf[strlen(buf)-2])); /* cut minutes */ buf[strlen(buf)-3] = '\0'; /* get hours */ minutes = minutes + (atoi(&buf[strlen(buf)-2]) * 60); /* store date information */ { char *year; char *month; char *day; /* cut hours */ buf[strlen(buf)-3] = '\0'; day = &buf[strlen(buf)-2]; /* cut day */ buf[strlen(buf)-3] = '\0'; month = &buf[strlen(buf)-2]; /* cut month */ buf[strlen(buf)-3] = '\0'; year = buf; snprintf(m_date_str, sizeof(m_date_str), "%s.%s.%s", day, month, year); } return minutes; } /* * gets today's time in minutes from the access log line */ static time_t getMinutes(char *line) { regmatch_t ma[2]; if(regexec(&m_trx_access, line, 1, ma, 0) == 0) { return getMinutesAccessLog(line, ma[0]); } if(regexec(&m_trx_j, line, 1, ma, 0) == 0) { return getMinutesJLog(line, ma[0]); } if(regexec(&m_trx_g, line, 2, ma, 0) == 0) { time_t minutes = 0; int len = ma[1].rm_eo - ma[1].rm_so; char buf[len+1]; strncpy(buf, &line[ma[1].rm_so], len); buf[len] = '\0'; /* hh:mm */ buf[2] = '\0'; minutes = atoi(buf) * 60; minutes = minutes + atoi(&buf[3]); return minutes; } // unknown format (not relevant for "-pu"/"-puc" but for "-p" mode) if(m_offline_url == 0) { fprintf(stdout, "F(%ld)", m_lines); } return 0; } /* * reads from stdin and calls updateStat() * => used for real time analysis */ static void readStdin(apr_pool_t *pool, const char *cstr) { char line[MAX_LINE]; int line_len; while(fgets(line, sizeof(line), stdin) != NULL) { line_len = strlen(line) - 1; while(line_len > 0) { // cut tailing CR/LF if(line[line_len] >= ' ') { break; } line[line_len] = '\0'; line_len--; } updateStat(pool, cstr, line); } } /* * reads from stdin and calls updateStat() * and printAndResetStat() * processes the time information from the * access log lines * => used for offline analysis */ static void readStdinOffline(apr_pool_t *pool, const char *cstr) { char line[MAX_LINE]; char buf[32]; time_t unitTime = 0; int line_len; FILE *outdev = stdout; if(m_offline_count || m_offline_url) { outdev = stderr; } while(fgets(line, sizeof(line), stdin) != NULL) { time_t l_time; line_len = strlen(line) - 1; while(line_len > 0) { // cut tailing CR/LF if(line[line_len] >= ' ') { break; } line[line_len] = '\0'; line_len--; } l_time = getMinutes(line); m_offline_data = 1; if(unitTime == 0) { unitTime = l_time; qs_setTime(unitTime * 60); } if(unitTime == l_time) { updateStat(pool, cstr, line); } if(l_time < unitTime) { /* leap in time... */ updateStat(pool, cstr, line); fprintf(outdev, "X"); fflush(outdev); unitTime = 0; } else { if(l_time > unitTime) { if(!m_verbose) { if(m_f != stdout) { fprintf(outdev, "."); fflush(outdev); } } } while(l_time > unitTime) { unitTime++; snprintf(buf, sizeof(buf), "%s %.2ld:%.2ld:00", m_date_str, unitTime/60, unitTime%60); if(m_offline) { printAndResetStat(buf); } qs_setTime(unitTime * 60);; } updateStat(pool, cstr, line); } } if(m_offline_data) { snprintf(buf, sizeof(buf), "%s %.2ld:%.2ld:00", m_date_str, unitTime/60, unitTime%60); if(m_offline) { printAndResetStat(buf); } } } /* * calls printAndResetStat() every minute * => used for real time analysis */ static void *loggerThread(void *argv) { char buf[1024]; while(1) { struct tm *ptr; time_t tm = time(NULL); time_t w = tm / LOG_INTERVAL * LOG_INTERVAL + LOG_INTERVAL; sleep(w - tm); tm = time(NULL); ptr = localtime(&tm); strftime(buf, sizeof(buf), "%d.%m.%Y %H:%M:%S", ptr); printAndResetStat(buf); if(m_rotate && m_file_name[0]) { strftime(buf, sizeof(buf), "%H:%M", ptr); if(strcmp(buf, "23:59") == 0) { char arch[MAX_LINE]; char arch2[MAX_LINE]; strftime(buf, sizeof(buf), "%Y%m%d%H%M%S", ptr); snprintf(arch, sizeof(arch), "%s.%s", m_file_name, buf); snprintf(arch2, sizeof(arch), "%s.%s", m_file_name2, buf); if(fclose(m_f) != 0) { qerror("failed to close file '%s': %s", m_file_name, strerror(errno)); } if(rename(m_file_name, arch) != 0) { qerror("failed to move file '%s': %s", arch, strerror(errno)); } qs_deleteOldFiles(m_file_name, m_generations); m_f = fopen(m_file_name, "a+"); if(m_f2) { fclose(m_f2); rename(m_file_name2, arch2); qs_deleteOldFiles(m_file_name2, m_generations); m_f2 = fopen(m_file_name2, "a+"); } } } } return NULL; } /** * usage text */ static void usage(const char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - collects request statistics from access log data.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -f -o [-p[c|u[c]] [-v]] [-x []] [-u ] [-m] [-c ]\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s is a real time access log analyzer. It collects\n", cmd); qs_man_print(man, "the data from stdin. The output is written to the specified\n"); qs_man_println(man, "file every minute and includes the following entries:\n"); qs_man_println(man, " - requests per second ("NRS")\n"); qs_man_println(man, " - number of requests within measured time (req)\n"); qs_man_println(man, " - bytes sent to the client per second ("NBS")\n"); qs_man_println(man, " - bytes received from the client per second ("NBIS")\n"); qs_man_println(man, " - repsonse status codes within the last minute (1xx,2xx,3xx,4xx,5xx)\n"); qs_man_println(man, " - average response duration ("NAV")\n"); qs_man_println(man, " - average response duration in milliseconds ("NAVMS")\n"); qs_man_println(man, " - distribution of response durations within the last minute\n"); qs_man_print(man, " (<1s,1s,2s,3s,4s,5s,>5)\n"); if(man) printf("\n"); qs_man_println(man, " - number of established (new) connections within the measured time (esco)\n"); qs_man_println(man, " - average system load (sl)\n"); qs_man_println(man, " - free memory (m) (not available for all platforms)\n"); qs_man_println(man, " - number of client ip addresses seen withn the last %d seconds (ip)\n", ACTIVE_TIME); qs_man_println(man, " - number of different users seen withn the last %d seconds (usr)\n", ACTIVE_TIME); qs_man_println(man, " - number of events identified by the 'E' format character\n"); qs_man_println(man, " - number of mod_qos events within the last minute (qV=create session,\n"); qs_man_print(man, " qv=VIP IP,qS=session pass, qD=access denied, qK=connection closed, qT=dynamic\n"); qs_man_print(man, " keep-alive, qL=request/response slow down, qs=serialized request, \n"); qs_man_print(man, " qA=connection abort, qU=new user tracking cookie)\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -f \n"); if(man) printf("\n"); qs_man_print(man, " Defines the log data format and the positions of data\n"); qs_man_print(man, " elements processed by this utility.\n"); qs_man_print(man, " See to the 'LogFormat' directive of the httpd.conf file\n"); qs_man_print(man, " to see the format defintions of the servers access log data.\n"); if(man) printf("\n"); qs_man_println(man, " %s knows the following elements:\n", cmd); qs_man_println(man, " I defines the client ip address (%%h)\n"); qs_man_println(man, " R defines the request line (%%r)\n"); qs_man_println(man, " S defines HTTP response status code (%%s)\n"); qs_man_println(man, " B defines the transferred bytes (%%b or %%O)\n"); qs_man_println(man, " i defines the received bytes (%%I)\n"); qs_man_println(man, " T defines the request duration (%%T)\n"); qs_man_println(man, " t defines the request duration in milliseconds (may be used instead of T)\n"); qs_man_println(man, " D defines the request duration in microseconds (may be used instead of T) (%%D)\n"); qs_man_println(man, " k defines the number of keepalive requests on the connection (%%k)\n"); qs_man_println(man, " U defines the user tracking id (%%{mod_qos_user_id}e)\n"); qs_man_println(man, " Q defines the mod_qos_ev event message (%%{mod_qos_ev}e)\n"); qs_man_println(man, " C defines the element for the detailed log (-c option), e.g. \"%%U\"\n"); qs_man_println(man, " s arbitrary counter to add up (sum within a minute)\n"); qs_man_println(man, " a arbitrary counter to build an average from (average per request)\n"); qs_man_println(man, " A arbitrary counter to build an average from (average per request)\n"); qs_man_println(man, " E comma separated list of event strings\n"); qs_man_println(man, " c content type (%%{content-type}o), available in -pc mode only\n"); qs_man_println(man, " m request method (GET/POST) (%%m), available in -pc mode only\n"); qs_man_println(man, " . defines an element to ignore (unknown string)\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -o \n"); if(man) printf("\n"); qs_man_print(man, " Specifies the file to store the output to. stdout is used if this option\n"); qs_man_print(man, " is not defined.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Used for post processing when reading the log data from a file (cat/pipe).\n"); qs_man_print(man, " %s is started using it's offline mode (extracting the time stamps from\n", cmd); qs_man_print(man, " the log lines) in order to process existing log files.\n"); qs_man_print(man, " The option \"-pc\" may be used alternatively if you want to gather request\n"); qs_man_print(man, " information per client (identified by IP address (I) or user tracking id (U)\n"); qs_man_print(man, " showing how many request each client has performed within the captured period\n"); qs_man_print(man, " of time). \"-pc\" supports the format characters IURSBTtDkEcm.\n"); qs_man_print(man, " The option \"-pu\" collects statistics on a per URL level (supports format\n"); qs_man_print(man, " characters RSTtD).\n"); qs_man_print(man, " \"-puc\" is very similar to \"-pu\" but cuts the end (handler) of each URL.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -v\n"); if(man) printf("\n"); qs_man_print(man, " Verbose mode.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -x []\n"); if(man) printf("\n"); qs_man_print(man, " Rotates the output file once a day (move). You may specify the number of\n"); qs_man_print(man, " rotated files to keep. Default are %d.\n", QS_GENERATIONS); if(man) printf("\n.TP\n"); qs_man_print(man, " -u \n"); if(man) printf("\n"); qs_man_print(man, " Becomes another user, e.g. www-data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -m\n"); if(man) printf("\n"); qs_man_print(man, " Calculates free system memory every minute.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -c \n"); if(man) printf("\n"); qs_man_print(man, " Enables the collection of log statitics for different request types.\n"); qs_man_print(man, " 'path' specifies the necessary rule file. Each rule consists of a rule\n"); qs_man_print(man, " identifier and a regular expression to identify a request seprarated\n"); qs_man_print(man, " by a colon, e.g., 01:^(/a)|(/c). The regular expressions are matched against\n"); qs_man_print(man, " the log data element which has been identified by the 'C' format character.\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); printf("Configuration using pipped logging:\n"); printf("\n"); } else { printf("Example configuration using pipped logging:\n"); } qs_man_println(man, " CustomLog \"|/bin/%s -f ISBTQ -x -o /var/logs/stat.csv\" \"%%h %%>s %%b %%T %%{mod_qos_ev}e\"\n", cmd); printf("\n"); if(man) { printf("Post processing:\n"); printf("\n"); } else { printf("Example for post processing:\n"); } qs_man_println(man, " LogFormat \"%%t %%h \\\"%%r\\\" %%>s %%b \\\"%%{User-Agent}i\\\" %%T\"\n"); qs_man_println(man, " cat access_log | /bin/%s -f ..IRSB.T -o /var/logs/stat.csv -p\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } /** * Loads the rule files. Each rule (pattern) is prefixed by an id. * * @param confFile Path to the rule file to load * @return */ static stat_rec_t *loadRule(apr_pool_t *pool, const char *confFile) { char line[MAX_LINE]; FILE *file = fopen(confFile, "r"); stat_rec_t *rec = NULL; stat_rec_t *prev = NULL; stat_rec_t *next = NULL; if(file == NULL) { qerror("could not read file '%s': ", confFile, strerror(errno)); exit(1); } while(!qs_getLinef(line, sizeof(line), file)) { char *id = line; char *p = strchr(line, RULE_DELIM); if(p) { p[0] = '\0'; p++; if(m_verbose) { printf("load rule %s: %s\n", id, p); } next = createRec(pool, id, p); if(rec == NULL) { // first record rec = next; } if(prev) { // has previous, append it to the list prev->next = next; } else { // sole record, no next rec->next = NULL; } // prev points now to the new record prev = next; } } fclose(file); return rec; } int main(int argc, const char *const argv[]) { const char *config = NULL; const char *file = NULL; const char *confFile = NULL; const char *cmd = strrchr(argv[0], '/'); const char *username = NULL; pthread_attr_t *tha = NULL; pthread_t tid; pthread_attr_t *thagc = NULL; pthread_t tidgc; apr_pool_t *pool; int t; apr_app_initialize(&argc, &argv, NULL); apr_pool_create(&pool, NULL); m_stat_rec = createRec(pool, "", ""); for(t = 0; t < NUM_EVENT_TABLES; t++) { m_ip_list[t] = apr_table_make(pool, 15000); m_user_list[t] = apr_table_make(pool, 15000); } m_gc_event_list = calloc(MAX_EVENT_ENTRIES, sizeof(qs_event_t *)); qs_csInitLock(); qs_setExpiration(ACTIVE_TIME); if(cmd == NULL) { cmd = argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-f") == 0) { /* this is the format string */ if (--argc >= 1) { config = *(++argv); if(strchr(config, 'i')) { // enable ib/s m_stat_rec->i_byte_count = 0; } if(strchr(config, 'k')) { // enable esco m_stat_rec->connections = 0; } if(strchr(config, 'c')) { // enable content type m_ct = 1; } if(strchr(config, 'D') || strchr(config, 't')) { // enable average duration in ms m_avms = 1; } if(strchr(config, 'm')) { m_methods = 1; } if(strchr(config, 's') || strchr(config, 'a') || strchr(config, 'A')) { // enable custom counter m_customcounter = 1; } if(strchr(config, 'Q')) { m_hasEV = 1; } } } else if(strcmp(*argv,"-o") == 0) { /* this is the out file */ if (--argc >= 1) { file = *(++argv); } } else if(strcmp(*argv,"-u") == 0) { /* switch user id */ if (--argc >= 1) { username = *(++argv); } } else if(strcmp(*argv,"-c") == 0) { /* custom patterns (e.g. url pattern list, format: ':') */ if (--argc >= 1) { confFile = *(++argv); } } else if(strcmp(*argv,"-p") == 0) { /* activate offline analysis */ m_offline = 1; qs_set2OfflineMode(); } else if(strcmp(*argv,"-pc") == 0) { /* activate offline counting analysis */ m_offline_count = 1; qs_set2OfflineMode(); } else if(strcmp(*argv,"-pu") == 0) { /* activate offline url analysis */ m_offline_url = 1; qs_set2OfflineMode(); } else if(strcmp(*argv,"-puc") == 0) { /* activate offline url analysis */ m_offline_url = 1; m_offline_url_cropped = 1; qs_set2OfflineMode(); } else if(strcmp(*argv,"-m") == 0) { /* activate memory usage */ m_mem = 1; } else if(strcmp(*argv,"-v") == 0) { m_verbose = 1; } else if(strcmp(*argv,"-x") == 0) { /* activate log rotation */ m_rotate = 1; if(argc > 1) { if(*argv[1] >= '0' && *argv[1] <= '9') { argc--; argv++; m_generations = atoi(*argv); } } } else if(strcmp(*argv,"-h") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } else { qerror("unknown option '%s'", *argv); exit(1); } argc--; argv++; } m_off = m_offline || m_offline_count || m_offline_url; if(m_off) { if(nice(10) == -1) { fprintf(stderr, "ERROR, failed to change nice value: %s\n", strerror(errno)); } /* init time pattern regex, std apache access log "dd/MMM/yyyy:hh:mm:ss" */ regcomp(&m_trx_access, "[0-9]{2}/[a-zA-Z]{3}/[0-9]{4}:[0-9]{2}:[0-9]{2}:[0-9]{2}", REG_EXTENDED); /* other time patterns: "yyyy mm dd hh:mm:ss,mmm" or "yyyy mm dd hh:mm:ss.mmm" resp "yyyy-mm-dd hh:mm:ss,mmm" or "yyyy-mm-dd hh:mm:ss.mmm" */ regcomp(&m_trx_j, "[0-9]{4}[ -]{1}[0-9]{2}[ -]{1}[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}[,.]{1}[0-9]{3}", REG_EXTENDED); /* fallback to generic " hh:mm:ss " pattern */ regcomp(&m_trx_g, " ([0-9]{2}:[0-9]{2}):[0-9]{2} ", REG_EXTENDED); } /* * offline url mod */ if(m_offline_url) { int i; apr_table_entry_t *entry; long request_count = 0; long request_count_min = -1; long request_count_max = 0; long long duration_count_ms = 0; long long duration_count_ms_min = -1; long long duration_count_ms_max = 0; m_url_entries = apr_table_make(pool, MAX_CLIENT_ENTRIES + 1); if(config == NULL) usage(cmd, 0); readStdinOffline(pool, config); fprintf(stderr, ".\n"); m_f = stdout; if(file) { m_f = fopen(file, "a+"); if(!m_f) { m_f = stdout; } } entry = (apr_table_entry_t *) apr_table_elts(m_url_entries)->elts; for(i = 0; i < apr_table_elts(m_url_entries)->nelts; i++) { url_rec_t *url_rec = (url_rec_t *)entry[i].val; request_count += url_rec->request_count; if(request_count_min == -1) { request_count_min = url_rec->request_count; } if(request_count_min > url_rec->request_count) { request_count_min = url_rec->request_count; } if(request_count_max < url_rec->request_count) { request_count_max = url_rec->request_count; } duration_count_ms += url_rec->duration_count_ms; if(duration_count_ms_min == -1) { duration_count_ms_min = url_rec->duration_count_ms; } if(duration_count_ms_min > url_rec->duration_count_ms) { duration_count_ms_min = url_rec->duration_count_ms; } if(duration_count_ms_max < url_rec->duration_count_ms) { duration_count_ms_max = url_rec->duration_count_ms; } fprintf(m_f, "req;%ld;" "1xx;%ld;2xx;%ld;3xx;%ld;4xx;%ld;5xx;%ld;" NAVMS";%lld;%s\n", url_rec->request_count, url_rec->status_1, url_rec->status_2, url_rec->status_3, url_rec->status_4, url_rec->status_5, url_rec->request_count ? (url_rec->duration_count_ms / url_rec->request_count) : 0, entry[i].key); } fprintf(m_f, "req;%ld;" ";;;;;;;;;;" NAVMS";%lld;min;\n", request_count_min, duration_count_ms_min); fprintf(m_f, "req;%ld;" ";;;;;;;;;;" NAVMS";%lld;max;\n", request_count_max, duration_count_ms_max); fprintf(m_f, "req;%ld;" ";;;;;;;;;;" NAVMS";%lld;average;\n", apr_table_elts(m_url_entries)->nelts ? (request_count / apr_table_elts(m_url_entries)->nelts) : 0, request_count ? (duration_count_ms / request_count) : 0); if(file && m_f != stdout) { fclose(m_f); } return 0; } /* * offline count mode creates statistics * on a per client basis (e.g. per source * ip or user id using the user tracking * feature of mod_qos) */ if(m_offline_count) { int i; apr_table_entry_t *entry; if(config == NULL) usage(cmd, 0); m_client_entries = apr_table_make(pool, MAX_CLIENT_ENTRIES + 1); readStdinOffline(pool, config); fprintf(stderr, ".\n"); entry = (apr_table_entry_t *) apr_table_elts(m_client_entries)->elts; m_f = stdout; if(file) { m_f = fopen(file, "a+"); if(!m_f) { m_f = stdout; } } for(i = 0; i < apr_table_elts(m_client_entries)->nelts; i++) { client_rec_t *client_rec = (client_rec_t *)entry[i].val; char esco[256]; char m[256]; /* ci (coverage index): low value indicates that we have seen the client at the end or beginning of the file (maybe not all requests due to log rotation) */ long coverage = m_lines ? (client_rec->firstLine * 100 / m_lines) : 0; long coverageend = m_lines ? (100 - ((client_rec->lastLine * 100) / m_lines)) : 0; if(coverageend < coverage) { coverage = coverageend; } esco[0] = '\0'; if(m_stat_rec->connections != -1) { sprintf(esco, "esco;%ld;", client_rec->connections); } m[0] = '\0'; if(m_methods) { sprintf(m, "GET;%ld;POST;%ld;", client_rec->get, client_rec->post); } if(m_avms == 0) { // no ms available client_rec->duration_count_ms = 1000 * client_rec->duration; } else { // improve accuracy (rounding errors): client_rec->duration = client_rec->duration_count_ms / 1000; } fprintf(m_f, "%s;req;%ld;errors;%ld;duration;%ld;bytes;%lld;" "1xx;%ld;2xx;%ld;3xx;%ld;4xx;%ld;5xx;%ld;304;%ld;" "av;%lld;"NAVMS";%lld;<1s;%ld;1s;%ld;2s;%ld;3s;%ld;4s;%ld;5s;%ld;>5s;%ld;" "%s" "%s" "ci;%ld;", entry[i].key, client_rec->request_count, client_rec->error_count, client_rec->end_s - client_rec->start_s, client_rec->byte_count, client_rec->status_1, client_rec->status_2, client_rec->status_3, client_rec->status_4, client_rec->status_5, client_rec->status_304, client_rec->request_count ? (client_rec->duration / client_rec->request_count) : 0, client_rec->request_count ? (client_rec->duration_count_ms / client_rec->request_count) : 0, client_rec->duration_0, client_rec->duration_1, client_rec->duration_2, client_rec->duration_3, client_rec->duration_4, client_rec->duration_5, client_rec->duration_6, esco, m, coverage); if(m_ct) { fprintf(m_f, "html;%ld;css/js;%ld;img;%ld;other;%ld;", client_rec->html, client_rec->cssjs, client_rec->img, client_rec->other); } if(apr_table_elts(client_rec->events)->nelts > 0) { int k; apr_table_entry_t *client_entry = (apr_table_entry_t *) apr_table_elts(client_rec->events)->elts; for(k = 0; k < apr_table_elts(client_rec->events)->nelts; k++) { const char *eventName = client_entry[k].key; int *eventVal = (int *)client_entry[k].val; fprintf(m_f, "%s;%d;", eventName, *eventVal); (*eventVal) = 0; } } fprintf(m_f, "\n"); } if(file && (m_f != stdout)) { fclose(m_f); } return 0; } /* requires at least a format string */ if(config == NULL) usage(cmd, 0); qs_setuid(username, cmd); if(file) { m_f = fopen(file, "a+"); if(m_f == NULL) { qerror("could not open file for writing '%s': %s", file, strerror(errno)); exit(1); } if(strlen(file) > (sizeof(m_file_name) - strlen(".yyyymmddHHMMSS ") - strlen(LOG_DET))) { qerror("file name too long '%s'", file); exit(1); } strcpy(m_file_name, file); } else { m_file_name[0] = '\0'; m_f = stdout; } if(confFile) { if(file == NULL) { qerror("option '-c' can only be used in conjunction with option '-o'"); exit(1); } snprintf(m_file_name2, sizeof(m_file_name2), "%s"LOG_DET, m_file_name); if(strchr(config, 'C') == NULL) { qerror("you need to add 'C' to the format string when enabling the pattern list (-c)"); exit(1); } m_stat_sub = loadRule(pool, confFile); m_f2 = fopen(m_file_name2, "a+"); if(m_f == NULL) { qerror("could not open file for writing '%s': %s", m_file_name2, strerror(errno)); exit(1); } } /* * Offline mode reads an existing log file * adjusting a virtual clock based on * the date string match of the log * enties. */ if(m_offline) { fprintf(stderr, "[%s]: offline mode\n", cmd); m_date_str[0] = '\0'; readStdinOffline(pool, config); if(!m_verbose) { fprintf(stdout, "\n"); } } else { /* standard mode reads data from * stdin and uses a separate thread * to write the data every minute. */ pthread_create(&tid, tha, loggerThread, NULL); pthread_create(&tidgc, thagc, gcThread, NULL); readStdin(pool, config); } if(file && (m_f != stdout)) { fclose(m_f); } return 0; } mod_qos-11.36/tools/src/char.h0000664000000000000020000002240513016363764014505 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ #define S_W_MAX 6 #define S_H_MAX 7 static int s_0[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_1[S_H_MAX][S_W_MAX] = { { 0,0,0,1,0,0}, { 0,0,1,1,0,0}, { 0,1,0,1,0,0}, { 0,0,0,1,0,0}, { 0,0,0,1,0,0}, { 0,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_2[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0}, { 1,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_3[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 0,0,1,1,0,0}, { 0,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_4[S_H_MAX][S_W_MAX] = { { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0}, { 1,0,0,1,0,0}, { 1,1,1,1,1,0}, { 0,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_5[S_H_MAX][S_W_MAX] = { { 1,1,1,1,1,0}, { 1,0,0,0,0,0}, { 1,1,1,1,0,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 1,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_6[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,0,0}, { 1,0,1,1,0,0}, { 1,1,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_7[S_H_MAX][S_W_MAX] = { { 1,1,1,1,1,0}, { 0,0,0,0,1,0}, { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0}, { 0,1,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_8[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_9[S_H_MAX][S_W_MAX] = { { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; /* ----------------------------------------------- */ static int s_a[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,0,0}, { 0,0,0,0,1,0}, { 0,1,1,1,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_b[S_H_MAX][S_W_MAX] = { { 1,0,0,0,0,0}, { 1,0,0,0,0,0}, { 1,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_c[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,0,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_d[S_H_MAX][S_W_MAX] = { { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 0,1,1,1,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_e[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,1,1,1,1,0}, { 1,0,0,0,0,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_f[S_H_MAX][S_W_MAX] = { { 0,0,1,1,0,0}, { 0,1,0,0,0,0}, { 1,1,1,0,0,0}, { 0,1,0,0,0,0}, { 0,1,0,0,0,0}, { 0,1,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_g[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,1,0}, { 0,1,1,1,0,0} }; static int s_h[S_H_MAX][S_W_MAX] = { { 1,0,0,0,0,0}, { 1,0,0,0,0,0}, { 1,0,1,1,0,0}, { 1,1,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,0,0,0,0,0} }; static int s_i[S_H_MAX][S_W_MAX] = { { 0,0,1,0,0,0}, { 0,0,0,0,0,0}, { 0,1,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_j[S_H_MAX][S_W_MAX] = { { 0,0,0,0,1,0}, { 0,0,0,0,0,0}, { 0,0,0,1,1,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 0,0,1,1,0,0} }; static int s_k[S_H_MAX][S_W_MAX] = { { 1,0,0,0,0,0}, { 1,0,0,0,0,0}, { 1,0,1,1,0,0}, { 1,1,0,0,0,0}, { 1,0,1,0,0,0}, { 1,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_l[S_H_MAX][S_W_MAX] = { { 0,1,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0} }; static int s_m[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,1,0,1,0,0}, { 1,0,1,0,1,0}, { 1,0,1,0,1,0}, { 1,0,1,0,1,0}, { 1,0,1,0,1,0}, { 0,0,0,0,0,0} }; static int s_n[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,1,1,0,0}, { 1,1,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,0,0,0,0,0} }; static int s_o[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_p[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,1,1,1,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,1,1,1,0,0}, { 1,0,0,0,0,0}, { 1,0,0,0,0,0} }; static int s_q[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0} }; static int s_r[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,1,1,0,0}, { 1,1,0,0,1,0}, { 1,0,0,0,0,0}, { 1,0,0,0,0,0}, { 1,0,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_s[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,1,1,1,0}, { 1,0,0,0,0,0}, { 0,1,1,1,0,0}, { 0,0,0,0,1,0}, { 1,1,1,1,0,0}, { 0,0,0,0,0,0} }; static int s_t[S_H_MAX][S_W_MAX] = { { 0,0,1,0,0,0}, { 0,1,1,1,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,1,0}, { 0,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_u[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_v[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,0,1,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0} }; static int s_w[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,1,0,1,0}, { 1,1,0,1,1,0}, { 1,0,0,0,1,0}, { 0,0,0,0,0,0} }; static int s_x[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,0,0,1,0}, { 0,1,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,1,0,0}, { 1,0,0,0,1,0}, { 0,0,0,0,0,0} }; static int s_y[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,1,1,1,1,0}, { 0,0,0,0,1,0}, { 1,1,1,1,0,0} }; static int s_z[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 1,1,1,1,1,0}, { 0,0,0,1,1,0}, { 0,0,1,0,0,0}, { 1,1,0,0,0,0}, { 1,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_BRO[S_H_MAX][S_W_MAX] = { { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0}, { 0,1,0,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_BRC[S_H_MAX][S_W_MAX] = { { 0,0,1,0,0,0}, { 0,0,0,1,0,0}, { 0,0,0,0,1,0}, { 0,0,0,0,1,0}, { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0} }; static int s_MI[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 1,1,1,1,1,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_LT[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,1,0,0}, { 0,1,1,0,0,0}, { 1,0,0,0,0,0}, { 0,1,1,0,0,0}, { 0,0,0,1,0,0}, { 0,0,0,0,0,0} }; static int s_GT[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,1,0,0,0,0}, { 0,0,1,1,0,0}, { 0,0,0,0,1,0}, { 0,0,1,1,0,0}, { 0,1,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_SP[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_US[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 1,1,1,1,1,0}, { 0,0,0,0,0,0} }; static int s_M[S_H_MAX][S_W_MAX] = { { 1,0,0,0,1,0}, { 1,1,0,1,1,0}, { 1,0,1,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 1,0,0,0,1,0}, { 0,0,0,0,0,0} }; static int s_DT[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,1,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_CM[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0} }; static int s_SC[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0} }; static int s_CO[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0} }; static int s_SL[S_H_MAX][S_W_MAX] = { { 0,0,0,0,0,1}, { 0,0,0,0,1,0}, { 0,0,0,1,0,0}, { 0,0,1,0,0,0}, { 0,1,0,0,0,0}, { 1,0,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_SQ[S_H_MAX][S_W_MAX] = { { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,1,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0}, { 0,0,0,0,0,0} }; static int s_X[S_H_MAX][S_W_MAX] = { { 1,1,1,1,1,0}, { 1,1,1,1,1,0}, { 1,1,1,1,1,0}, { 1,1,1,1,1,0}, { 1,1,1,1,1,0}, { 1,1,1,1,1,0}, { 0,0,0,0,0,0} }; mod_qos-11.36/tools/src/qsrotate.c0000644000000000000020000003024513016363764015424 0ustar rootbin /** * Utilities for the quality of service module mod_qos. * * Log rotation tool. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qsrotate.c,v 1.30 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" #define HUGE_STR 1024 /* global variables used by main and support thread */ static int m_force_rotation = 0; static time_t m_tLogEnd = 0; static time_t m_tRotation = 86400; /* default are 24h */ static int m_nLogFD = -1; static int m_generations = -1; static char *m_file_name = NULL; static long m_messages = 0; static char *m_cmd = NULL; static int m_compress = 0; static int m_stdout = 0; static long m_counter = 0; static long m_limit = 2147483648 - (128 * 1024); static int m_offset = 0; static int m_offset_enabled = 0; static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - a log rotation tool (similar to Apache's rotatelogs).\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -o [-s [-t ]] [-f] [-z] [-g ] [-u ] [-p]\n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, "%s reads from stdin (piped log) and writes the data to the provided\n", cmd); qs_man_print(man, "file rotating the file after the specified time.\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -o \n"); if(man) printf("\n"); qs_man_print(man, " Output log file to write the data to (use an absolute path).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -s \n"); if(man) printf("\n"); qs_man_print(man, " Rotation interval in seconds, default are 86400 seconds.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -t \n"); if(man) printf("\n"); qs_man_print(man, " Offset to UTC (enables also DST support), default is 0.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -b \n"); if(man) printf("\n"); qs_man_print(man, " File size limitation (default are %ld bytes).\n", m_limit); if(man) printf("\n.TP\n"); qs_man_print(man, " -f\n"); if(man) printf("\n"); qs_man_print(man, " Forced log rotation even no data is written.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -z\n"); if(man) printf("\n"); qs_man_print(man, " Compress (gzip) the rotated file.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -g \n"); if(man) printf("\n"); qs_man_print(man, " Generations (number of files to keep).\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -u \n"); if(man) printf("\n"); qs_man_print(man, " Become another user, e.g. www-data.\n"); if(man) printf("\n.TP\n"); qs_man_print(man, " -p\n"); if(man) printf("\n"); qs_man_print(man, " Writes data also to stdout (for piped logging).\n"); printf("\n"); if(man) { printf(".SH EXAMPLE\n"); } else { printf("Example:\n"); } qs_man_println(man, " TransferLog \"|%s -f -z -g 3 -o /dest/file -s 86400\"\n", cmd); printf("\n"); qs_man_print(man, "The name of the rotated file will be /dest/filee.YYYYmmddHHMMSS\n"); qs_man_print(man, "where YYYYmmddHHMMSS is the system time at which the data has been\n"); qs_man_print(man, "rotated.\n"); printf("\n"); if(man) { printf(".SH NOTE\n"); } else { printf("Note:\n"); } qs_man_print(man, " Each %s instance must use an individual file.\n", cmd); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qssign(1), qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } static time_t get_now() { time_t now = time(NULL); if(m_offset_enabled) { struct tm lcl = *localtime(&now); if(lcl.tm_isdst) { now += 3600; } now += m_offset; } return now; } static int openFile(const char *cmd, const char *file_name) { int m_nLogFD = open(file_name, O_WRONLY | O_CREAT | O_APPEND, 0660); /* error while opening log file */ if(m_nLogFD < 0) { fprintf(stderr,"[%s]: ERROR, failed to open file <%s>\n", cmd, file_name); } return m_nLogFD; } /** * Compress method called by a child process (forked) * used to compress the rotated file. * * @param cmd Command name (used when logging errors) * @param arch Path to the file to compress. File gets renamed to .gz */ static void compressThread(const char *cmd, const char *arch) { gzFile *outfp; int infp; char dest[HUGE_STR+20]; char buf[HUGE_STR]; int len; snprintf(dest, sizeof(dest), "%s.gz", arch); /* low prio */ if(nice(10) == -1) { fprintf(stderr, "[%s]: WARNING, failed to change nice value: %s\n", cmd, strerror(errno)); } if((infp = open(arch, O_RDONLY)) == -1) { /* failed to open file, can't compress it */ fprintf(stderr,"[%s]: ERROR, could not open file for compression <%s>\n", cmd, arch); return; } if((outfp = gzopen(dest,"wb")) == NULL) { fprintf(stderr,"[%s]: ERROR, could not open file for compression <%s>\n", cmd, dest); close(infp); return; } while((len = read(infp, buf, sizeof(buf))) > 0) { gzwrite(outfp, buf, len); } gzclose(outfp); close(infp); /* done, delete the old file */ unlink(arch); } void sigchild(int signo) { pid_t pid; int stat; while((pid=waitpid(-1,&stat,WNOHANG)) > 0) { } } /** * Rotates a file * * @param cmd Command name to be used in log messages * @param now * @param file_name Name of the file to rotate (rename) * @param messages Error message if rotation was not successful */ static void rotate(const char *cmd, time_t now, const char *file_name, long *messages) { int rc; char arch[HUGE_STR+20]; char tmb[20]; struct tm *ptr = localtime(&now); strftime(tmb, sizeof(tmb), "%Y%m%d%H%M%S", ptr); snprintf(arch, sizeof(arch), "%s.%s", file_name, tmb); /* set next rotation time */ m_tLogEnd = ((now / m_tRotation) * m_tRotation) + m_tRotation; // reset byte counter m_counter = 0; /* rename current file */ if(m_nLogFD >= 0) { close(m_nLogFD); rename(file_name, arch); } /* open new file */ m_nLogFD = openFile(cmd, file_name); if(m_nLogFD < 0) { /* opening a new file has failed! try to reopen and clear the last file */ char msg[HUGE_STR]; snprintf(msg, sizeof(msg), "ERROR while writing to file, %ld messages lost\n", *messages); fprintf(stderr,"[%s]: ERROR, while writing to file <%s>\n", cmd, file_name); rename(arch, file_name); m_nLogFD = openFile(cmd, file_name); if(m_nLogFD > 0) { rc = ftruncate(m_nLogFD, 0); rc = write(m_nLogFD, msg, strlen(msg)); } } else { *messages = 0; if(m_compress || (m_generations != -1)) { signal(SIGCHLD,sigchild); if(fork() == 0) { if(m_compress) { compressThread(cmd, arch); } if(m_generations != -1) { qs_deleteOldFiles(file_name, m_generations); } exit(0); } } } } /** * Separate thread which initiates file rotation even no * log data is written. * * @param argv (not used) */ static void *forcedRotationThread(void *argv) { time_t now; time_t n; while(1) { qs_csLock(); now = get_now(); if(now > m_tLogEnd) { rotate(m_cmd, now, m_file_name, &m_messages); } qs_csUnLock(); now = get_now(); n = 1 + m_tLogEnd - now; sleep(n); } return NULL; } int main(int argc, char **argv) { char *username = NULL; int rc; char *buf; int nRead, nWrite; time_t now; struct stat st; pthread_attr_t *tha = NULL; pthread_t tid; char *cmd = strrchr(argv[0], '/'); if(cmd == NULL) { cmd = argv[0]; } else { cmd++; } m_cmd = calloc(1, strlen(cmd)+1); strcpy(m_cmd, cmd); // copy as we wan't to pass it when forking while(argc >= 1) { if(strcmp(*argv,"-o") == 0) { if (--argc >= 1) { m_file_name = *(++argv); } } else if(strcmp(*argv,"-u") == 0) { if (--argc >= 1) { username = *(++argv); } } else if(strcmp(*argv,"-s") == 0) { if (--argc >= 1) { m_tRotation = atoi(*(++argv)); } } else if(strcmp(*argv,"-t") == 0) { if (--argc >= 1) { m_offset = atoi(*(++argv)); m_offset = m_offset * 3600; m_offset_enabled = 1; } } else if(strcmp(*argv,"-g") == 0) { if (--argc >= 1) { m_generations = atoi(*(++argv)); } } else if(strcmp(*argv,"-b") == 0) { if (--argc >= 1) { m_limit = atoi(*(++argv)); } } else if(strcmp(*argv,"-z") == 0) { m_compress = 1; } else if(strcmp(*argv,"-p") == 0) { m_stdout = 1; } else if(strcmp(*argv,"-f") == 0) { m_force_rotation = 1; } else if(strcmp(*argv,"-h") == 0) { usage(m_cmd, 0); } else if(strcmp(*argv,"--help") == 0) { usage(m_cmd, 0); } else if(strcmp(*argv,"-?") == 0) { usage(m_cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(m_cmd, 1); } argc--; argv++; } if(m_file_name == NULL) usage(m_cmd, 0); if(m_limit < (1024 * 1024)) usage(m_cmd, 0); if(stat(m_file_name, &st) == 0) { m_counter = st.st_size; } qs_setuid(username, m_cmd); /* set next rotation time */ now = get_now(); m_tLogEnd = ((now / m_tRotation) * m_tRotation) + m_tRotation; /* open file */ m_nLogFD = openFile(m_cmd, m_file_name); if(m_nLogFD < 0) { /* startup did not success */ exit(2); } if(m_force_rotation) { qs_csInitLock(); pthread_create(&tid, tha, forcedRotationThread, NULL); } buf = calloc(1, MAX_LINE_BUFFER+1); for(;;) { nRead = read(0, buf, MAX_LINE_BUFFER); if(nRead == 0) exit(3); if(nRead < 0) if(errno != EINTR) exit(4); if(m_force_rotation) { qs_csLock(); } m_counter += nRead; now = get_now(); /* write data if we have a file handle (else continue but drop log data, re-try to open the file at next rotation time) */ if(m_nLogFD >= 0) { do { nWrite = write(m_nLogFD, buf, nRead); if(m_stdout) { printf("%.*s", nRead, buf); } } while (nWrite < 0 && errno == EINTR); } if(nWrite != nRead) { m_messages++; if(m_nLogFD >= 0) { char msg[HUGE_STR]; snprintf(msg, sizeof(msg), "ERROR while writing to file, %ld messages lost\n", m_messages); /* error while writing data, try to delete the old file and continue ... */ rc = ftruncate(m_nLogFD, 0); rc = write(m_nLogFD, msg, strlen(msg)); 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you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qs_util.c,v 1.22 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" /* mutex for counter access */ static pthread_mutex_t m_qs_lock_cs; /* online/offline mode */ static int m_qs_offline = 0; /* internal clock for offline analysis * stores time in seconds */ static time_t m_qs_virtualSystemTime = 0; /* ---------------------------------- * functions * ---------------------------------- */ /** * man: * - escape special chars, like "\" and "-" * - wipe leading spaces * - wipe tailing LF */ void qs_man_print(int man, const char *fmt, ...) { char bufin[4096]; char bufout[4096]; va_list args; int i = 0; int j = 0; memset(bufin, 0, 4096); va_start(args, fmt); vsprintf(bufin, fmt, args); if(man) { // wipe leading spaces // while(bufin[i] == ' ' && bufin[i+1] == ' ') { while(bufin[i] == ' ') { i++; } } while(bufin[i] && j < 4000) { // escape "\\" and "-" for man page if(man && (bufin[i] == '\\' || bufin[i] == '-')) { bufout[j] = '\\'; j++; } if(bufin[i] == '\n') { if(man) { // skip LF for man page i++; } else { // keep LF bufout[j] = bufin[i]; i++; j++; } } else { // standard char bufout[j] = bufin[i]; i++; j++; } } bufout[j] = '\0'; printf("%s", bufout); if(man) { printf(" "); } } // escape only void qs_man_println(int man, const char *fmt, ...) { char bufin[4096]; char bufout[4096]; va_list args; int i = 0; int j = 0; memset(bufin, 0, 4096); va_start(args, fmt); vsprintf(bufin, fmt, args); while(bufin[i] && j < 4000) { // escape "\\" and "-" for man page if(man && (bufin[i] == '\\' || bufin[i] == '-')) { bufout[j] = '\\'; j++; } // standard char bufout[j] = bufin[i]; i++; j++; } bufout[j] = '\0'; printf("%s", bufout); } char *qs_CMD(const char *cmd) { char *buf = calloc(1024, 1); int i = 0; while(cmd[i] && i < 1023) { buf[i] = toupper(cmd[i]); i++; } buf[i] = '\0'; return buf; } /* io --------------------------------------------------------- */ /* * reads a line from stdin * * @param s Buffer to write line to * @param n Length of the buffer * @return 0 on EOF, or 1 if there is more data to read */ int qs_getLine(char *s, int n) { int i = 0; while (1) { s[i] = (char)getchar(); if(s[i] == EOF) return 0; if (s[i] == CR) { s[i] = getchar(); } if ((s[i] == 0x4) || (s[i] == LF) || (i == (n - 1))) { s[i] = '\0'; return 1; } ++i; } } /* * reads a line from file * * @param s Buffer to write line to * @param n Length of the buffer * @return 0 on EOF, or 1 if there is more data to read */ int qs_getLinef(char *s, int n, FILE *f) { register int i = 0; while (1) { s[i] = (char) fgetc(f); if (s[i] == CR) { s[i] = fgetc(f); } if ((s[i] == 0x4) || (s[i] == LF) || (i == (n - 1))) { s[i] = '\0'; return (feof(f) ? 1 : 0); } ++i; } } /* time ------------------------------------------------------- */ /* * We implement our own time which is either * the system time (real time) or the time from * the access log lines (offline) if m_qs_offline * has been set (use qs_set2OfflineMode() to enable * the offline mode). * * @param tme Set to the time since the Epoch in seconds. */ void qs_time(time_t *tme) { if(m_qs_offline) { /* use virtual time from the access log */ *tme = m_qs_virtualSystemTime; } else { time(tme); } } /** * Sets time measurement (qs_time()) to offline mode. */ void qs_set2OfflineMode() { m_qs_offline = 1; } /* * Updates the virtual time. */ void qs_setTime(time_t tme) { m_qs_virtualSystemTime = tme; } /* synchronisation -------------------------------------------- */ /* * locks all counter */ void qs_csLock() { pthread_mutex_lock(&m_qs_lock_cs); } /* * unlocks all counter */ void qs_csUnLock() { pthread_mutex_unlock(&m_qs_lock_cs); } /* * init locks */ void qs_csInitLock() { pthread_mutex_init(&m_qs_lock_cs, NULL); } /* logs ------------------------------------------------------- */ /** * Keeps only the specified number of files * * @param file_name Absolute file name * @param generations Number of files to keep */ void qs_deleteOldFiles(const char *file_name, int generations) { char dirname[QS_HUGE_STR]; char *p; strcpy(dirname, file_name); p = strrchr(dirname, '/'); if(strlen(file_name) > (QS_HUGE_STR - 10)) { // invalid file length return; } if(p) { DIR *dir; p[0] = '\0'; p++; dir = opendir(dirname); if(dir) { int num = 0; struct dirent *de; char filename[QS_HUGE_STR]; snprintf(filename, sizeof(filename), "%s.20", p); /* determine how many files to delete */ while((de = readdir(dir)) != 0) { if(de->d_name && (strncmp(de->d_name, filename, strlen(filename)) == 0)) { num++; } } /* delete the oldest files (assumes they are ordered by their creation date) */ while(num > generations) { char old[QS_HUGE_STR]; old[0] = '\0'; rewinddir(dir); while((de = readdir(dir)) != 0) { if(de->d_name && (strncmp(de->d_name, filename, strlen(filename)) == 0)) { if(strcmp(old, de->d_name) > 0) { snprintf(old, sizeof(old), "%s", de->d_name); } else { if(old[0] == '\0') { snprintf(old, sizeof(old), "%s", de->d_name); } } } } { /* build abs path and delete it */ char unl[QS_HUGE_STR]; snprintf(unl, sizeof(unl), "%s/%s", dirname, old); unlink(unl); } num--; } closedir(dir); } } } /* user ------------------------------------------------------- */ void qs_setuid(const char *username, const char *cmd) { if(username && getuid() == 0) { struct passwd *pwd = getpwnam(username); uid_t uid, gid; if(pwd == NULL) { fprintf(stderr, "[%s] failed to switch user: unknown user id '%s'\n", cmd, username); exit(1); } uid = pwd->pw_uid; gid = pwd->pw_gid; setgid(gid); setuid(uid); if(getuid() != uid) { fprintf(stderr, "[%s] setuid failed (%s,%d)\n", cmd, username, uid); exit(1); } if(getgid() != gid) { fprintf(stderr, "[%s] setgid failed (%d)\n", cmd, gid); exit(1); } } } mod_qos-11.36/tools/src/qs_util.h0000664000000000000020000000407013016363764015246 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2016 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ #ifndef QS_UTIL_H #define QS_UTIL_H /* ---------------------------------- * version info * ---------------------------------- */ static const char man_version[] = "11.36"; static const char man_date[] = "November 2016"; /* ---------------------------------- * definitions * ---------------------------------- */ /* huge (128kb) buffer supporting very long lines (twice as much as Apache's rotatelogs uses */ #define MAX_LINE_BUFFER 131072 /* smaller buffer, e.g. for qslog */ #define MAX_LINE 32768 #define QS_HUGE_STR 2048 #define CR 13 #define LF 10 /* ---------------------------------- * functions * ---------------------------------- */ char *qs_CMD(const char *cmd); void qs_man_print(int man, const char *fmt, ...); void qs_man_println(int man, const char *fmt, ...); /* io */ int qs_getLine(char *s, int n); int qs_getLinef(char *s, int n, FILE *f); /* time */ void qs_time(time_t *tme); void qs_set2OfflineMode(); void qs_setTime(time_t tme); /* synchronisation */ void qs_csInitLock(); void qs_csLock(); void qs_csUnLock(); /* log */ void qs_deleteOldFiles(const char *file_name, int generations); /* user */ void qs_setuid(const char *username, const char *cmd); #endif mod_qos-11.36/tools/src/qscheck.c0000644000000000000020000002535713016363764015213 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * Monitor testing tcp connectivity to servers used by mod_proxy. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qscheck.c,v 1.10 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include #include #include #include #include "qs_util.h" //#include #define CR 13 #define LF 10 #define QS_TIMEOUT 2 #define QS_PROXYP "proxypass " #define QS_PROXYP_TAB "proxypass\t" #define QS_PROXYPR "proxypassreverse " #define QS_PROXYPR_TAB "proxypassreverse\t" #define QS_PROXYR "proxyremote " #define QS_PROXYR_TAB "proxyremote\t" #define QS_INCLUDE "nclude " #define QS_INCLUDE_TAB "nclude\t" #define QS_SERVERROOT "ServerRoot " #define QS_SERVERROOT_TAB "ServerRoot\t" static int m_verbose = 0; static char ServerRoot[1024]; static char *checkedHosts = NULL; /** * Prints usage text */ static void usage(char *cmd) { printf("\n"); printf("Monitor programm testing the TCP connectivity to servers.\n"); printf("\n"); printf("Usage: %s -c [-v]\n", cmd); printf("\n"); printf("Verifies the connectivity to the server referred either\n"); printf("by the ProxyPass, ProxyPassReverse, or ProxyReverse\n"); printf("directive used by mod_proxy.\n"); printf("\n"); printf("You may alternatively use \"%s -i :\" if\n", cmd); printf("you want to check the TCP connectivity to a single host.\n"); printf("\n"); printf("See http://mod-qos.sourceforge.net/ for further details.\n"); exit(1); } /** * Opens a tcp connection */ static int ping(unsigned long address, int port) { int status = 0; struct sockaddr_in addr; int skt; addr.sin_addr.s_addr = address; addr.sin_port = htons(port); addr.sin_family = PF_INET; skt = socket(PF_INET, SOCK_STREAM, IPPROTO_TCP); if(skt != -1) { int sflags = fcntl(skt,F_GETFL,0); if(sflags >=0) { /* set non blocking socket */ if(fcntl(skt,F_SETFL,sflags|O_NONBLOCK) >=0) { /* this connect returns immediately */ int ret = connect(skt, (struct sockaddr*)&addr, sizeof(struct sockaddr_in)); if(fcntl(skt,F_SETFL,sflags) >=0) { socklen_t lon = sizeof(int); int valopt; fd_set fd_w; struct timeval tme; tme.tv_sec = QS_TIMEOUT; tme.tv_usec = 0; FD_ZERO(&fd_w); FD_SET(skt, &fd_w); /* select returns -1 on timeout, else 1 (connected or refused) */ if(select(FD_SETSIZE, NULL, &fd_w, NULL, &tme) > 0) { /* check the status of the socket in order to distinguish between connected or refused */ if(getsockopt(skt, SOL_SOCKET, SO_ERROR, (void*)(&valopt), &lon) >= 0) { if(!valopt) { /* UP ! */ status = 1; } } } } } } } return status; } /** * resolves host address */ static unsigned long getAddress(const char *hostname) { int ip = 1; int i = 0; unsigned long address = 0L; struct hostent *hoste; for(i = 0; i < (int) strlen(hostname); i++) { if((!isdigit((int) hostname[i])) && (hostname[i] != '.')) { ip = 0; break; } } if (ip) { address = inet_addr(hostname); if(address == -1) { return 0L; } } else { hoste = gethostbyname(hostname); if (!hoste || !hoste->h_addr_list[ 0 ]) { /* can't resolve host name */ return 0L; } address = ((struct in_addr*)hoste->h_addr_list[ 0 ])->s_addr; } return address; } /* * Checks a single host (parse host string, resolve address, ping). */ static int checkHost(const char *cmd, const char *filename, int ln, char *abs_url) { int status = 1; char *schema = abs_url; char *host = NULL; char *ports = NULL; int port = 0; char hp[1024]; unsigned long address; char *x = strstr(abs_url, "://"); if(x == NULL) { if(m_verbose) { fprintf(stderr,"[%s]: ERROR, wrong syntax <%s> in %s on line %d\n", cmd, abs_url, filename, ln); } return 0; } x[0] = '\0'; x = x + strlen("://"); host = x; ports = strchr(x, ':'); if(ports != NULL) { ports[0] = '\0'; ports++; x = strchr(ports, '/'); if(x == NULL) { int i; x = ports; for(i=0;(x[i] != ' ') && (x[i] != '\t') && (x[i] != '\0'); i++); x[i] = '\0'; } else { x[0] = '\0'; } port = atoi(ports); } else { ports = strchr(x, '/'); if(ports == NULL) { int i; for(i=0;(x[i] != ' ') && (x[i] != '\t') && (x[i] != '\0'); i++); x[i] = '\0'; } else { ports[0] = '\0'; } if(strcmp(schema, "http") == 0) { port = 80; } else { port = 443; } } /* check each host only once */ snprintf(hp, sizeof(hp), "#%s:%d#", host, port); if(checkedHosts && strstr(checkedHosts, hp) != NULL) { /* already checked */ return 1; } if(checkedHosts == NULL) { checkedHosts = calloc(1, strlen(hp) + 1); strcpy(checkedHosts, hp); } else { int pl = strlen(checkedHosts) +strlen(hp) + 1; char *p = calloc(1, pl); snprintf(p, pl, "%s%s", checkedHosts, hp); free(checkedHosts); checkedHosts = p; } /* resolve address */ address = getAddress(host); if(address == 0L) { fprintf(stderr,"[%s]: ERROR, could not resolve hostname %s\n", cmd, host); return -1; } /* check connection */ if(ping(address, port)) { if(m_verbose) { printf("[%s]: %s:%d Up\n", cmd, host, port); } return 1; } else { printf("[%s]: %s:%d Down\n", cmd, host, port); return 0; } } /** * Open file and check every ProxyPass* or ProxyR* entry. * - follows include ... directive * - determines serverroot */ static int checkFile(const char *cmd, const char *filename) { int status = 1; int ln = 0; char line[1024]; FILE *f = fopen(filename, "r"); if(f == NULL) { if(ServerRoot[0] != '\0') { char fqfile[2048]; snprintf(fqfile, sizeof(fqfile), "%s/%s", ServerRoot, filename); f = fopen(fqfile, "r"); } } if(f == NULL) { fprintf(stderr,"[%s]: ERROR, could not open file %s\n", cmd, filename); return 0; } while(!qs_getLinef(line, sizeof(line), f)) { char *command = NULL; int cmd_len = 0; int to = 0; while(line[to]) { line[to] = tolower(line[to]); to++; } ln++; command = strstr(line, QS_PROXYP); cmd_len = strlen(QS_PROXYP); if(command == NULL) command = strstr(line, QS_PROXYP_TAB); if(command == NULL) { command = strstr(line, QS_PROXYPR); cmd_len = strlen(QS_PROXYPR); } if(command == NULL) command = strstr(line, QS_PROXYPR_TAB); if(command == NULL) { command = strstr(line, QS_PROXYR); cmd_len = strlen(QS_PROXYR); } if(command == NULL) command = strstr(line, QS_PROXYR_TAB); if(command && strchr(line, '#') == 0) { /* command = cmd url schema://host[:port]/url */ char *abs_url = &command[cmd_len]; int i, j; /* get the url */ for(i=0;(abs_url[i] == ' ') || (abs_url[i] == '\t'); i++); abs_url = &abs_url[i]; /* skip url */ for(i=0;(abs_url[i] != ' ') && (abs_url[i] != '\t') && (abs_url[i] != '\0'); i++); abs_url = &abs_url[i]; /* get schema://host[:port]/url */ for(i=0;(abs_url[i] == ' ') || (abs_url[i] == '\t'); i++); abs_url = &abs_url[i]; /* ping */ if(abs_url && abs_url[0] != '\0' && abs_url[0] != '!') { status = status & checkHost(cmd, filename, ln, abs_url); } } else { /* include commands */ command = strstr(line, QS_INCLUDE); if(command == NULL) command = strstr(line, QS_INCLUDE_TAB); if(command && strchr(line, '#') == 0) { char *file = &command[strlen(QS_INCLUDE)]; int i, j; /* get the value */ for(i=0;(file[i] == ' ') || (file[i] == '\t'); i++); /* delete spaces at the end of the value */ if(&file[i] != '\0') { for(j=i+1;(file[j] != ' ') && (file[j] != '\t') && (file[j] != '\0'); j++); file[j] = '\0'; } file = &file[i]; status = status & checkFile(cmd, file); } else { /* server root */ command = strstr(line, QS_SERVERROOT); if(command == NULL) command = strstr(line, QS_SERVERROOT_TAB); if(command && strchr(line, '#') == 0) { char *sr = &command[strlen(QS_SERVERROOT)]; int i, j; /* get the value */ for(i=0;(sr[i] == ' ') || (sr[i] == '\t'); i++); /* delete spaces at the end of the value */ if(&sr[i] != '\0') { for(j=i+1;(sr[j] != ' ') && (sr[j] != '\t') && (sr[j] != '\0'); j++); sr[j] = '\0'; } strcpy(ServerRoot, &sr[i]); } } } } fclose(f); return status; } int main(int argc, char **argv) { char *config = NULL; char *cmd = strrchr(argv[0], '/'); char *single = NULL; int status = 1; if(cmd == NULL) { cmd = argv[0]; } else { cmd++; } ServerRoot[0] = '\0'; while(argc >= 1) { if(strcmp(*argv,"-c") == 0) { if (--argc >= 1) { config = *(++argv); } } else if(strcmp(*argv,"-i") == 0) { if (--argc >= 1) { single = *(++argv); } } else if(strcmp(*argv,"-v") == 0) { m_verbose = 1; } argc--; argv++; } if(single) { char *hostName = single; char *portNumber = strchr(single, ':'); if(portNumber) { unsigned long addr; int prt; portNumber[0] = '\0'; portNumber++; addr = getAddress(hostName); prt = atoi(portNumber); if(addr && prt) { if(ping(addr, prt)) { if(m_verbose) { printf("[%s]: %s:%d Up\n", cmd, hostName, prt); } status = 1; } else { printf("[%s]: %s:%d Down\n", cmd, hostName, prt); status = 0; } } else { // could not resolve fprintf(stderr,"[%s]: ERROR, unknown host/port\n", cmd); status = 0; } } else { // invalid input fprintf(stderr,"[%s]: ERROR, invalid format\n", cmd); status = 0; } } else { if(config == NULL) { usage(cmd); } status = checkFile(cmd, config); } if(status == 0) { fprintf(stderr,"[%s]: ERROR, check failed\n", cmd); exit(1); } printf("[%s]: OK, check successful\n", cmd); return 0; } mod_qos-11.36/tools/src/qs_apo.h0000664000000000000020000000175113016363764015053 0ustar rootbin/** * Utilities for the quality of service module mod_qos. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2007-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ #ifndef QS_APO_H #define QS_APO_H char *qs_readpwd(apr_pool_t *pool, const char *prg); #endif mod_qos-11.36/tools/src/Makefile.am0000644000000000000020000000121713016363764015447 0ustar rootbin# $Id: Makefile.am,v 1.13 2015/09/24 19:31:17 pbuchbinder Exp $ bin_PROGRAMS=qsfilter2 qslog qspng qsrotate qssign qstail qsgrep qsexec qscheck qsgeo qslogger qshead qsfilter2_SOURCES= \ qsfilter2.c qs_util.c qslog_SOURCES= \ qslog.c qs_util.c qspng_SOURCES= \ qspng.c qs_util.c qsrotate_SOURCES= \ qsrotate.c qs_util.c qssign_SOURCES= \ qssign.c qs_util.c qs_apo.c qstail_SOURCES= \ qstail.c qs_util.c qshead_SOURCES= \ qshead.c qs_util.c qsgrep_SOURCES= \ qsgrep.c qs_util.c qsexec_SOURCES= \ qsexec.c qs_util.c qscheck_SOURCES= \ qscheck.c qs_util.c qsgeo_SOURCES= \ qsgeo.c qs_util.c qslogger_SOURCES= \ qslogger.c qs_util.c mod_qos-11.36/tools/src/qshead.c0000644000000000000020000000710413016363764015025 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Utilities for the quality of service module mod_qos. * * Shows the beginning of a log file stopping at the provided pattern. * * See http://mod-qos.sourceforge.net/ for further * details. * * Copyright (C) 2012-2015 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ static const char revision[] = "$Id: qshead.c,v 1.5 2016/10/07 13:33:38 pbuchbinder Exp $"; #include #include #include #include #include #include #include "qs_util.h" static void usage(char *cmd, int man) { if(man) { //.TH [name of program] [section number] [center footer] [left footer] [center header] printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date, man_version, cmd); } printf("\n"); if(man) { printf(".SH NAME\n"); } qs_man_print(man, "%s - an utility reading from stdin and printing all" " lines to stdout until" " reaching the defined pattern.\n", cmd); printf("\n"); if(man) { printf(".SH SYNOPSIS\n"); } qs_man_print(man, "%s%s -p \n", man ? "" : "Usage: ", cmd); printf("\n"); if(man) { printf(".SH DESCRIPTION\n"); } else { printf("Summary\n"); } qs_man_print(man, " %s reads lines from stdin and prints them to stdout unitl a line contains\n", cmd); qs_man_print(man, " the specified pattern (literal string).\n"); printf("\n"); if(man) { printf(".SH OPTIONS\n"); } else { printf("Options\n"); } if(man) printf(".TP\n"); qs_man_print(man, " -p \n"); if(man) printf("\n"); qs_man_print(man, " Search pattern (literal string).\n"); printf("\n"); if(man) { printf(".SH SEE ALSO\n"); printf("qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1) qstail(1)\n"); printf(".SH AUTHOR\n"); printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n"); } else { printf("See http://mod-qos.sourceforge.net/ for further details.\n"); } if(man) { exit(0); } else { exit(1); } } int main(int argc, const char * const argv[]) { char line[32768]; const char *pattern = NULL; char *cmd = strrchr(argv[0], '/'); int status = 0; if(cmd == NULL) { cmd = (char *)argv[0]; } else { cmd++; } argc--; argv++; while(argc >= 1) { if(strcmp(*argv,"-p") == 0) { if (--argc >= 1) { pattern = *(++argv); } } else if(strcmp(*argv,"-?") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"-help") == 0) { usage(cmd, 0); } else if(strcmp(*argv,"--man") == 0) { usage(cmd, 1); } argc--; argv++; } if(pattern == NULL) { usage(cmd, 0); } while(fgets(line, sizeof(line), stdin) != NULL) { printf("%s", line); if(strstr(line, pattern)) { return status; } } return status; } mod_qos-11.36/tools/man1/0000775000000000000020000000000013016363764013461 5ustar rootbinmod_qos-11.36/tools/man1/qssign.10000664000000000000020000000242213016363764015047 0ustar rootbin.TH QSSIGN 1 "November 2016" "mod_qos utilities 11.36" "qssign man page" .SH NAME qssign \- an utility to sign and verify the integrity of log data. .SH SYNOPSIS qssign \-s|S [\-e] [\-v] [\-u ] [\-f ] [\-a 'sha1'|'sha256'] .SH DESCRIPTION qssign is a log data integrity check tool. It reads log data from stdin (pipe) and writes the data to stdout adding a sequence number and signatur to ever log line. .SH OPTIONS .TP \-s Passphrase used to calculate signature. .TP \-S Specifies a program which writes the passphrase to stdout. .TP \-e Writes end marker when stopping data signing. .TP \-v Verification mode checking the integrity of signed data. .TP \-u Becomes another user, e.g. www\-data. .TP \-f Filter pattern (case sensitive regular expression) for messages which do not need to be signed. .TP \-a 'sha1'|'sha256' Specifes the algorithm to use. Default is sha1. .SH EXAMPLE Sign: TransferLog "|/bin/qssign \-s password \-e |/bin/qsrotate \-o /var/log/apache/access_log" Verify: cat access_log | qssign \-s password \-v .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qsexec.10000664000000000000020000000315113016363764015033 0ustar rootbin.TH QSEXEC 1 "November 2016" "mod_qos utilities 11.36" "qsexec man page .SH NAME qsexec \- parses the data received via stdin and executes the defined command on a pattern match. .SH SYNOPSIS qsexec \-e [\-t :] [\-c []] [\-p] [\-u ] .SH DESCRIPTION qsexec reads log lines from stdin and searches for the defined pattern. It executes the defined command string on pattern match. .SH OPTIONS .TP \-e Specifes the search pattern causing an event which shall trigger the command. .TP \-t : Defines the number of pattern match within the the defined number of seconds in order to trigger the command execution. By default, every pattern match causes a command execution. .TP \-c [] Pattern which clears the event counter. Executes optionally a command if an event command has been executed before. .TP \-p Writes data also to stdout (for piped logging). .TP \-u Become another user, e.g. www\-data. .TP Defines the event command string where $0\-$9 are substituted by the submatches of the regular expression. .SH EXAMPLE Executes the deny.sh script providing the IP address of the client causing a mod_qos(031) messages whenever the log message appears 10 times within at most one minute: ErrorLog "|qsexec \-e \\'mod_qos\\(031\\).*, c=([0\-9a\-zA\-Z:.]*)\\' \-t 10:60 \\'/bin/deny.sh $1\\'" .SH SEE ALSO qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qstail.10000664000000000000020000000135513016363764015044 0ustar rootbin.TH QSTAIL 1 "November 2016" "mod_qos utilities 11.36" "qstail man page" .SH NAME qstail \- an utility printing the end of a log file starting at the specified pattern. .SH SYNOPSIS qstail \-i \-p .SH DESCRIPTION qstail shows the end of a log file beginning with the line containing the specified pattern. This may be used to show all lines which has been written after a certain event (e.g., server restart) or time stamp. .SH OPTIONS .TP \-i Input file to read the data from. .TP \-p Search pattern (literal string). .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qshead.10000664000000000000020000000114713016363764015013 0ustar rootbin.TH QSHEAD 1 "November 2016" "mod_qos utilities 11.36" "qshead man page" .SH NAME qshead \- an utility reading from stdin and printing all lines to stdout until reaching the defined pattern. .SH SYNOPSIS qshead \-p .SH DESCRIPTION qshead reads lines from stdin and prints them to stdout unitl a line contains the specified pattern (literal string). .SH OPTIONS .TP \-p Search pattern (literal string). .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1) qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qsfilter2.10000664000000000000020000001370513016363764015464 0ustar rootbin.TH QSFILTER2 1 "November 2016" "mod_qos utilities 11.36" "qsfilter2 man page" .SH NAME qsfilter2 \- an utility to generate mod_qos request line rules out from existing access/audit log data. .SH SYNOPSIS qsfilter2 \-i [\-c ] [\-d ] [\-h] [\-b ] [\-p|\-s|\-m|\-o] [\-l ] [\-n] [\-e] [\-u 'uni'] [\-k ] [\-t] [\-f ] [\-v 0|1|2] .SH DESCRIPTION mod_qos implements a request filter which validates each request line. The module supports both, negative and positive security model. The QS_Deny* directives are used to specify request line patterns which are not allowed to access the server (negative security model / blacklist). These rules are used to restrict access to certain resources which should not be available to users or to protect the server from malicious patterns. The QS_Permit* rules implement a positive security model (whitelist). These directives are used to define allowed request line patterns. Request which do not match any of thses patterns are not allowed to access the server. qsfilter2 is an audit log analyzer used to generate filter rules (perl compatible regular expressions) which may be used by mod_qos to deny access for suspect requests (QS_PermitUri rules). It parses existing audit log files in order to generate request patterns covering all allowed requests. .SH OPTIONS .TP \-i Input file containing request URIs. The URIs for this file have to be extracted from the servers access logs. Each line of the input file contains a request URI consiting of a path and and query. Example: /aaa/index.do /aaa/edit?image=1.jpg /aaa/image/1.jpg /aaa/view?page=1 /aaa/edit?document=1 These access log data must include current request URIs but also request lines from previous rule generation steps. It must also include request lines which cover manually generated rules. .TP \-c mod_qos configuration file defining QS_DenyRequestLine and QS_PermitUri directives. qsfilter2 generates rules from access log data automatically. Manually generated rules (QS_PermitUri) may be provided from this file. Note: each manual rule must be represented by a request URI in the input data (\-i) in order to make sure not to be deleted by the rule optimisation algorithm. QS_Deny* rules from this file are used to filter request lines which should not be used for whitelist rule generation. Example: # manually defined whitelist rule: QS_PermitUri +view deny "^[/a\-zA\-Z0\-9]+/view\\?(page=[0\-9]+)?$" # filter unwanted request line patterns: QS_DenyRequestLine +printable deny ".*[\\x00\-\\x19].*" .TP \-d Depth (sub locations) of the path string which is defined as a literal string. Default is 1. .TP \-h Always use a string representing the handler name in the path even the url does not have a query. See also \-d option. .TP \-b Replaces url pattern by the regular expression when detecting a base64/hex encoded string. Detecting sensibility is defined by a numeric value. You should use values higher than 5 (default) or 0 to disable this function. .TP \-p Repesents query by pcre only (no literal strings). .TP \-s Uses one single pcre for the whole query string. .TP \-m Uses one pcre for multipe query values (recommended mode). .TP \-o Does not care the order of query parameters. .TP \-l Outsizes the query length by the defined length ({0,size+len}), default is 10. .TP \-n Disables redundant rules elimination. .TP \-e Exit on error. .TP \-u 'uni' Enables additional decoding methods. Use the same settings as you have used for the QS_Decoding directive. .TP \-p Repesents query by pcre only (no literal strings). Determines the worst case performance for the generated whitelist by applying each rule for each request line (output is real time filter duration per request line in milliseconds). .TP \-k Prefix used to generate rule identifiers (QSF by default). .TP \-t Calculates the maximal latency per request (worst case) using the generated rules. .TP \-f Filters the input by the provided path (prefix) only processing matching lines. .TP \-v Verbose mode. (0=silent, 1=rule source, 2=detailed). Default is 1. Don't use rules you haven't checked the request data used to generate it! Level 1 is highly recommended (as long as you don't have created the log data using your own web crawler). .SH OUTPUT The output of qsfilter2 is written to stdout. The output contains the generated QS_PermitUri directives but also information about the source which has been used to generate these rules. It is very important to check the validity of each request line which has been used to calculate the QS_PermitUri rules. Each request line which has been used to generate a new rule is shown in the output prefixed by "ADD line :". These request lines should be stored and reused at any later rule generation (add them to the URI input file). The subsequent line shows the generated rule. At the end of data processing a list of all generated QS_PermitUri rules is shown. These directives may be used withn the configuration file used by mod_qos. .SH EXAMPLE ./qsfilter2 \-i loc.txt \-c httpd.conf \-m \-e ... # ADD line 1: /aaa/index.do # 003 ^(/[a\-zA\-Z0\-9\\\-_]+)+[/]?\\.?[a\-zA\-Z]{0,4}$ # ADD line 3: /aaa/view?page=1 # \-\-\- ^[/a\-zA\-Z0\-9]+/view\\?(page=[0\-9]+)?$ # ADD line 4: /aaa/edit?document=1 # 004 ^[/a\-zA\-Z]+/edit\\?((document)(=[0\-9]*)*[&]?)*$ # ADD line 5: /aaa/edit?image=1.jpg # 005 ^[/a\-zA\-Z]+/edit\\?((image)(=[0\-9\\.a\-zA\-Z]*)*[&]?)*$ ... QS_PermitUri +QSF001 deny "^[/a\-zA\-Z]+/edit\\?((document|image)(=[0\-9\\.a\-zA\-Z]*)*[&]?)*$" QS_PermitUri +QSF002 deny "^[/a\-zA\-Z0\-9]+/view\\?(page=[0\-9]+)?$" QS_PermitUri +QSF003 deny "^(/[a\-zA\-Z0\-9\\\-_]+)+[/]?\\.?[a\-zA\-Z]{0,4}$" .SH SEE ALSO qsexec(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qspng.10000664000000000000020000000155013016363764014674 0ustar rootbin.TH QSPNG 1 "November 2016" "mod_qos utilities 11.36" "qspng man page" .SH NAME qspng \- an utility to draw a png graph from qslog(1) output data. .SH SYNOPSIS qspng \-i \-p \-o [\-10] .SH DESCRIPTION qspng is a tool to generate png (portable network graphics) raster images files from semicolon separated data generated by the qslog utility. It reads up to the first 1440 entries (24 hours) and prints a graph using the values defined by the 'parameter' name. .SH OPTIONS .TP \-i Input file to read data from. .TP \-p Parameter name, e.g. r/s or usr. .TP \-o Output file name, e.g. stat.png. .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qslog(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qsrotate.10000664000000000000020000000263613016363764015414 0ustar rootbin.TH QSROTATE 1 "November 2016" "mod_qos utilities 11.36" "qsrotate man page" .SH NAME qsrotate \- a log rotation tool (similar to Apache's rotatelogs). .SH SYNOPSIS qsrotate \-o [\-s [\-t ]] [\-f] [\-z] [\-g ] [\-u ] [\-p] .SH DESCRIPTION qsrotate reads from stdin (piped log) and writes the data to the provided file rotating the file after the specified time. .SH OPTIONS .TP \-o Output log file to write the data to (use an absolute path). .TP \-s Rotation interval in seconds, default are 86400 seconds. .TP \-t Offset to UTC (enables also DST support), default is 0. .TP \-b File size limitation (default are 2147352576 bytes). .TP \-f Forced log rotation even no data is written. .TP \-z Compress (gzip) the rotated file. .TP \-g Generations (number of files to keep). .TP \-u Become another user, e.g. www\-data. .TP \-p Writes data also to stdout (for piped logging). .SH EXAMPLE TransferLog "|qsrotate \-f \-z \-g 3 \-o /dest/file \-s 86400" The name of the rotated file will be /dest/filee.YYYYmmddHHMMSS where YYYYmmddHHMMSS is the system time at which the data has been rotated. .SH NOTE Each qsrotate instance must use an individual file. .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qsgeo.10000664000000000000020000000252013016363764014660 0ustar rootbin.TH QSGEO 1 "November 2016" "mod_qos utilities 11.36" "qsgeo man page" .SH NAME qsgeo \- an utility to lookup a client's country code. .SH SYNOPSIS qsgeo \-d [\-l] [\-s] [\-ip ] .SH DESCRIPTION Use this utility to resolve the country codes of IP addresses within existing log files. The utility reads the log file data from stdin and writes them, with the injected country code, to stdout. .SH OPTIONS .TP \-d Specifies the path to the geographical database files (CSV file containing IP address ranges and country codes). .TP \-s Writes a summary of the requests per country only. .TP \-l Writes the database to stdout (ignoring stdin) inserting local (127.*) and private (10.*, 172.16*, 192.168.*) network addresses. .TP \-ip Resolves a single IP address instead of processing a log file. .SH EXAMPLE Reading the file access_log and adding the country code to the IP address field: cat access_log | qsgeo \-d GeoIPCountryWhois.csv Reading the file access_log and showing a summary only: cat access_log | qsgeo \-d GeoIPCountryWhois.csv \-s Resolving a single IP address: qsgeo \-d GeoIPCountryWhois.csv \-ip 192.84.12.23 .SH SEE ALSO qsexec(1), qsfilter2(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/mod_qos.10000664000000000000020000005134513016363764015214 0ustar rootbin.TH MOD_QOS 1 "November 2016" "mod_qos Apache Module" "mod_qos" .SH NAME mod_qos \- quality of service module for the Apache Web server .SH DESCRIPTION mod_qos is a quality of service module for the Apache web server implementing control mechanisms that can provide different levels of priority to different HTTP requests. .SH OPTIONS .TP QS_LocRequestLimitDefault , defines the default for the QS_LocRequestLimit and QS_LocRequestLimitMatch directive. .TP QS_LocRequestLimit , defines the maximum number of concurrent requests allowed to access the specified location. Default is defined by the QS_LocRequestLimitDefault directive. .TP QS_LocRequestPerSecLimit , defines the allowed number of requests per second to a location. Requests are limited by adding a delay to each requests. This directive should be used in conjunction with QS_LocRequestLimit only. .TP QS_LocKBytesPerSecLimit , defines the allowed download bandwidth to the defined kbytes per second. Responses areslowed by adding a delay to each response (non\-linear, bigger files get longer delay than smaller ones). This directive should be used in conjunction with QS_LocRequestLimit only. .TP QS_LocRequestLimitMatch , defines the number of concurrent requests to the uri (path and query) pattern. Default is defined by the QS_LocRequestLimitDefault directive. .TP QS_LocRequestPerSecLimitMatch , defines the allowed number of requests per second to the uri (path and query) pattern. Requests are limited by adding a delay to each requests. This directive should be used in conjunction with QS_LocRequestLimitMatch only. .TP QS_LocKBytesPerSecLimitMatch , defines the allowed download bandwidth to the location matching the defined URL (path and query) pattern. Responses are slowed down by adding a delay to each response (non\-linear, bigger files get longer delay than smaller ones). This directive should be used in conjunction with QS_LocRequestLimitMatch only. .TP QS_CondLocRequestLimitMatch , defines the number of concurrent requests to the uri (path and query) regex. Rule is only enforced if the QS_Cond variable matches the specified pattern (regex). .TP QS_EventRequestLimit [=] , defines the number of concurrent events. Directive works similar to QS_LocRequestLimit, but counts the requests having the same environment variable (and optionally matching its value, too) rather than those that have the same URL pattern. .TP QS_EventPerSecLimit [!] , defines how often requests may have the defined environment variable (literal string) set. It measures the occurrences of the defined environment variable on a request per seconds level and tries to limit this occurrence to the defined number. It works similar to as QS_LocRequestPerSecLimit, but counts only the requests with the specified variable (or without it if the variable name is prefixed by a '!'). If a request matches multiple events, the rule with the lowest bandwidth is applied. Events are limited by adding a delay to each request causing an event. .TP QS_EventKBytesPerSecLimit [!] , throttles the download bandwidth of all requests having the defined variable set to the defined kbytes per second. Responses are slowed by adding a delay to each response (non\-linear, bigger files get longer delay than smaller ones). By default, no limitation is active. This directive should be used in conjunction with QS_EventRequestLimit only (you must use the same variable name for both directives). .TP QS_EventLimitCount , defines the maximum number of events allowed within the defined time. Requests are denied when reaching this limitation for the specified time (blocked at request level). .TP QS_SrvMaxConn , defines the maximum number of concurrent TCP connections for this server (virtual host). .TP QS_SrvMaxConnClose [%], defines the maximum number of concurrent TCP connections until the server disables keep\-alive for this server (closes the connection after each requests. You may specify the number of connections as a percentage of MaxClients if adding the suffix '%' to the specified value. .TP QS_SrvMaxConnPerIP [], defines the maximum number of connections per source IP address for this server (virtual host). 'connections' defines the number of busy connections of the server (all virtual hosts) to enable this limitation, default is 0. .TP QS_SrvMaxConnExcludeIP , excludes an IP address or address range from beeing limited. .TP QS_SrvSerialize 'on'|'off' [], ensures that not more than one request having the QS_SrvSerialize variable set is processed at the same time by serializing them (process one after each other). .TP QS_SrvDataRateOff, disables the QS_SrvRequestRate and QS_SrvMinDataRate enforcement for a virtual host (only port/address based but not for name based virtual hosts). .TP QS_SrvRequestRate [], defines the minumum upload throughput a client must generate. See also QS_SrvMinDataRate. .TP QS_SrvMinDataRate [ []], defines the minumum upload/download throughput a client must generate (the bytes send/received by the client per seconds). This bandwidth is measured while transmitting the data (request line, header fields, request body, or response data). The client connection get closed if the client does not fulfill the required data rate and the IP address of the causing client get marked in order to be handled with low priority (see the QS_ClientPrefer directive). The "max bytes per second" activates dynamic minimum throughput control: The required minimal throughput is increased in parallel to the number of concurrent clients sending/receiving data. The "max bytes per second" setting is reached when the number of sending/receiving clients is equal to the MaxClients setting. The "connections" argument is used to specify the number of busy TCP connections a server must have to enable this feature (0 by default). No limitation is set by default. .TP QS_SrvMinDataRateOffEvent '+'|'\-', disables the minimal data rate enfocement (QS_SrvMinDataRate) for a certain connection if the defined environment variable has been set. The '+' prefix is used to add a variable to the configuration while the '\-' prefix is used to remove a variable. .TP QS_SrvSampleRate , defines the sampling rate used by the QS_SrvMinDataRate directive to measure the throughput of a connection. .TP QS_DenyRequestLine '+'|'\-' 'log'|'deny' , generic request line (method, path, query and protocol) filter used to deny access for requests matching the defined expression (pcre). '+' adds a new rule while '\-' removes a rule for a location. The action is either 'log' (access is granted but rule match is logged) or 'deny' (access is denied). .TP QS_DenyPath, same as QS_DenyRequestLine but applied to the path only. .TP QS_DenyQuery, same as QS_DenyRequestLine but applied to the query only. .TP QS_DenyEvent '+'|'\-' 'log'|'deny' [!], matches requests having the defined process environment variable set (or NOT set if prefixed by a '!'). The action taken for matching rules is either 'log' (access is granted but the rule match is logged) or 'deny' (access is denied). .TP QS_PermitUri, '+'|'\-' 'log'|'deny' , generic request filter applied to the request uri (path and query). Only requests matching at least one QS_PermitUri pattern are allowed. If a QS_PermitUri pattern has been defined an the request does not match any rule, the request is denied albeit of any server resource availability (white list). All rules must define the same action. pcre is case sensitve. .TP QS_DenyBody 'on'|'off', enabled body data filter (obsolete). .TP QS_DenyQueryBody 'on'|'off', enabled body data filter for QS_DenyQuery. .TP QS_PermitUriBody 'on'|'off', enabled body data filter for QS_PermitUriBody. .TP QS_InvalidUrlEncoding 'log'|'deny'|'off', enforces correct URL decoding in conjunction with the QS_DenyRequestLine, QS_DenyPath, and QS_DenyQuery directives. Default is "off". .TP QS_LimitRequestBody , limits the allowed size of an HTTP request message body. .TP QS_DenyDecoding 'uni', enabled additional string decoding functions which are applied before matching QS_Deny* and QS_Permit* directives. Default is URL decoding (%xx, \xHH, '+'). .TP QS_DenyInheritanceOff, disable inheritance of QS_Deny* and QS_Permit* directives to a location. .TP QS_RequestHeaderFilter 'on'|'off'|'size', filters request headers by allowing only these headers which match the request header rules defined by mod_qos. Request headers which do not conform these definitions are either dropped or the whole request is denied. Custom request headers may be added by the QS_RequestHeaderFilterRule directive. Using the 'size' option, the header field max. size is verified only (similar to LimitRequestFieldsize but using individual values for each header type) while the pattern is ignored. .TP QS_ResponseHeaderFilter 'on'|'off', filters response headers by allowing only these headers which match the request header rules defined by mod_qos. Request headers which do not conform these definitions are dropped. .TP QS_RequestHeaderFilterRule
'drop'|'deny' , used to add custom request header filter rules which override the internal filter rules of mod_qos. Directive is allowed in global server context only. .TP QS_ResponseHeaderFilterRule
, used to add custom response header filter rules which override the internal filter rules of mod_qos. Directive is allowed in global server context only. .TP QS_MileStone 'log'|'deny' [], defines request line patterns a client must access in the defined order as they are defined in the configuration file. .TP QS_MileStoneTimeout , defines the time in seconds within a client must reach the next milestone. Default are 3600 seconds. .TP QS_SessionCookieName , defines a custom session cookie name, default is MODQOS. .TP QS_SessionCookiePath , defines the cookie path, default is "/". .TP QS_SessionTimeout , defines the session life time for a VIP. It is only used for session based (cookie) VIP identification (not for IP based). Default is 3600 seconds. .TP QS_SessionKey , secret key used for cookie encryption. Used when using the same session cookie for multiple web servers (load balancing) or sessions should survive a server restart. By default, a random key is used which changes every server restart. .TP QS_VipHeaderName [=] [drop], defines an HTTP response header which marks a user as a VIP. mod_qos creates a session for this user by setting a cookie, e.g., after successful user authentication. Tests optionally its value against the provided regular expression. Specify the action 'drop' if you want mod_qos to remove this control header from the HTTP response. .TP QS_VipIPHeaderName [=] [drop], defines an HTTP response header which marks a client source IP address as a VIP. Tests optionally its value against the provided regular expression. Specify the action 'drop' if you want mod_qos to remove this control header from the HTTP response. .TP QS_VipUser, creates a VIP session for users which have been authenticated by the Apache server, e.g., by the standard mod_auth* modules. It works similar to the QS_VipHeaderName directive. .TP QS_VipIpUser, marks a source IP address as a VIP if the user has been authenticated by the Apache server, e.g. by the standard mod_auth* modules. It works similar to the QS_VipIPHeaderName directive. .TP QS_UserTrackingCookieName [] [] ['session'], enables the user tracking cookie by defining a cookie name. The "path" parameter is an option cookie check page which is used to ensure the client accepts cookies. The "domain" option defines the Domain attriibute for the Set\-Cookie header. The option "session" indicates that the cookie shall be a session cookie expiring when the user closes it's browser. User tracking requires mod_unique_id. This feature is disabled by default. Ignores QS_LogOnly. .TP QS_SetEnvIf [!][=] [!] [!], sets (or unsets) the 'variable=value' (literal string) if variable1 (literal string) AND variable2 (literal string) are set in the request environment variable list (not case sensitive). This is used to combine multiple variables to a new event type. Alternatively, a regular expression can be specifed for variable1's value and variable2 must be omitted in order to simply set a new variable if the regular expression matches. .TP QS_SetEnvIfQuery [!][=value], directive works quite similar to the SetEnvIf directive of the Apache module mod_setenvif, but the specified regex is applied against the query string portion of the request line. The directive recognizes the occurrences of $1..$9 within value and replaces them by the sub\-expressions of the defined regex pattern. .TP QS_SetEnvIfParp [!][=value], directive parsing the request payload using the Apache module mod_parp. It matches the request URL query and the HTTP request message body data as well ('application/x\-www\-form\-urlencoded', 'multipart/form\-data', and 'multipart/mixed') and sets the defined process variable (quite similar to the QS_SetEnvIfQuery directive). The directive recognizes the occurrences of $1..$9 within value and replaces them by the sub\-expressions of the defined regex pattern. This directive activates mod_parp for every request to the virtual host. You may deactivate mod_parp for selected requests using the SetEnvIf directive: unset the variable 'parp' to do so. Important: request message body processing requires that the server loads the whole request into its memory (at least twice the length of the message). You should limit the allowed size of the HTTP request message body using the QS_LimitRequestBody directive when using QS_SetEnvIfParp! .TP QS_SetEnvIfBody [!][=value], parses the request body using the Apache module mod_parp. Specify the content types to process using the mod_parp directive PARP_BodyData and ensure that mod_parp is enabled using the SetEnvIf directive of the Apache module mod_setenvif. You should limit the allowed size of HTTP requests message body using the QS_LimitRequestBody directive when using mod_parp. The directive recognizes the occurrence of $1 within the variable value and replaces it by the sub\-expressions of the defined regex pattern. .TP QS_SetEnvStatus (deprecated, use QS_SetEnvIfStatus) .TP QS_SetEnvIfStatus , adds the defined request environment variable if the HTTP status code matches the defined value. The value 'QS_SrvMinDataRate' may be used as a special status code to set a QS_Block event in order to handle connection close events caused by QS_SrvMinDataRate rules while the status 'NullConnection' may be used to mark connections which are closed before any HTTP request has ever been received. The 'QS_SrvMaxConnPerIP' value may be used to count QS_Block events for connections closed by the QS_SrvMaxConnPerIP directive. The 'BrokenConnection' value may be used to mark clients not reading the full HTTP response. .TP QS_SetEnvResBody (deprecated, use QS_SetEnvIfResBody) .TP QS_SetEnvIfResBody [!], adds the defined request environment variable (e.g. QS_Block) if the HTTP response body contains the defined literal string. Supports only one pattern per location. .TP QS_SetEnv , sets the defined variable with the value where the value string may contain other environment variables surrounded by "${" and "}". The variable is only set if all defined variables within the value can be resolved. .TP QS_SetReqHeader [!]
['late'], sets the defined HTTP request header to the request if the specified environment variable is set. .TP QS_UnsetResHeader
, Removes the specified response header. .TP QS_SetEnvResHeader
[drop], sets the defined HTTP response header to the request environment variables. Deletes the header if the action 'drop' has been specified. .TP QS_SetEnvResHeaderMatch
, sets the defined HTTP response header to the request environment variables if the specified regular expression (pcre) matches the header value. .TP QS_SetEnvRes [=], sets the environmet variable2 if the regular expression matches against the value of the environment variable. Occurrences of $1..$9 within the value and replace them by parenthesized subexpressions of the regular expression. .TP QS_RedirectIf [:], redirects the client to the configured url if the regular expression matches the value of the the environment variable. .TP QS_ClientEntries , defines the number of individual clients managed by mod_qos. Default is 50000. Directive is allowed in global server context only. .TP QS_ClientPrefer [], prefers known VIP clients when server has less than 80% (or the configured value) of free TCP connections. Preferred clients are VIP clients (or those without any negative penalties), see QS_VipHeaderName directive. Directive is allowed in global server context only. .TP QS_ClientTolerance , defines the allowed tolerance (variation) from a "normal" client (average) in percent. Default is 20%. Directive is allowed in global server context only. .TP QS_ClientContentTypes <304>, defines the distribution of HTTP response content types a client normaly receives when accessing the server. mod_qos normally learns the average behavior automatically by default but you may specify a static configuration in order to avoid influences by a high number of abnormal clients. .TP QS_ClientEventBlockCount [], defines the maximum number of QS_Block allowed within the defined time (default are 10 minutes). Directive is allowed in global server context only. .TP QS_ClientEventBlockExcludeIP , excludes an IP address or address range from beeing limited by QS_ClientEventBlockCount. .TP QS_ClientEventLimitCount [ []], defines the maximum number of the specified environment variable (QS_Limit by default) allowed within the defined time (default are 10 minutes). Directive is allowed in global server context only. .TP QS_CondClientEventLimitCount , defines the maximum number of the specified environment variable allowed within the defined time. Directive works similar as QS_ClientEventLimitCount but requests are only blocked if the QS_Cond variable matches the defined pattern (regex). Directive is allowed in global server context only. .TP QS_ClientEventPerSecLimit , defines the number events pro seconds on a per client (source IP) basis. Events are identified by requests having the QS_Event variable set. Directive is allowed in global server context only. .TP QS_ClientEventRequestLimit , defines the allowed number of concurrent requests comming from the same client source IP address having the QS_EventRequest variable set. Directive is allowed in global server context only. .TP QS_ClientSerialize, serializes requests having the QS_Serialize variable set if they are comming from the same IP address. .TP QS_ClientIpFromHeader
, defines a HTTP request header to read the client's source IP address from (instead of taking the IP address of the client opening the TCP connection). This may be used for the QS_ClientEventLimitCount directive and QS_Country variable. .TP QS_ClientGeoCountryDB , path to the geograpical database file. .TP QS_ClientGeoCountryPriv , defines a comma separated list of country codes for origin client IP address which are allowed to access the server if the number of busy TCP connections reaches the defined number of connections. .TP QS_ErrorPage , defines a custom error page. .TP QS_ErrorResponseCode , defines the HTTP response code which is used when a request is denied, default is 500. .TP QS_LogOnly 'on'|'off', enables the log only mode of the module where no limitations are enforced. Default is off. Directive is allowed in global server context only. .TP QS_SupportIPv6 'on'|'off', enables IPv6 address support. Default is on. .TP QS_SemMemFile , optional path to a directory or file which shall be used for file based samaphores/shared memory usage. Default is /var/tmp/. .TP QS_DisableHandler 'on'|'off', disables the qos\-viewer and qos\-console for a virtual host .TP QS_Chroot , change root directory. .TP QS_Status 'on'|'off', writes a log message containing server statistics once every minute. Default is off. .TP QSLog , used to configure a global (per Apache instance) 'qslog' logger. .SH AUTHOR Pascal Buchbinder, http://mod\-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qsgrep.10000664000000000000020000000177513016363764015056 0ustar rootbin.TH QSGREP 1 "November 2016" "mod_qos utilities 11.36" "qsgrep man page" .SH NAME qsgrep \- prints matching patterns within a file. .SH SYNOPSIS qsgrep \-e \-o [] .SH DESCRIPTION qsgrep is a simple tool to search patterns within files. It uses regular expressions to find patterns and prints the submatches within a pre\-defined format string. .SH OPTIONS .TP \-e Specifes the search pattern. .TP \-o Defines the output string where $0\-$9 are substituted by the submatches of the regular expression. .TP Defines the input file to process. qsgrep reads from from standard input if this parameter is omitted. .SH EXAMPLE Shows the IP addresses of clients causing mod_qos(031) messages): qsgrep \-e 'mod_qos\\(031\\).*, c=([a\-zA\-Z0\-9:.]*)' \-o 'ip=$1' error_log .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qslog.10000664000000000000020000001132313016363764014670 0ustar rootbin.TH QSLOG 1 "November 2016" "mod_qos utilities 11.36" "qslog man page" .SH NAME qslog \- collects request statistics from access log data. .SH SYNOPSIS qslog \-f \-o [\-p[c|u[c]] [\-v]] [\-x []] [\-u ] [\-m] [\-c ] .SH DESCRIPTION qslog is a real time access log analyzer. It collects the data from stdin. The output is written to the specified file every minute and includes the following entries: \- requests per second (r/s) \- number of requests within measured time (req) \- bytes sent to the client per second (b/s) \- bytes received from the client per second (ib/s) \- repsonse status codes within the last minute (1xx,2xx,3xx,4xx,5xx) \- average response duration (av) \- average response duration in milliseconds (avms) \- distribution of response durations within the last minute (<1s,1s,2s,3s,4s,5s,>5) \- number of established (new) connections within the measured time (esco) \- average system load (sl) \- free memory (m) (not available for all platforms) \- number of client ip addresses seen withn the last 600 seconds (ip) \- number of different users seen withn the last 600 seconds (usr) \- number of events identified by the 'E' format character \- number of mod_qos events within the last minute (qV=create session, qv=VIP IP,qS=session pass, qD=access denied, qK=connection closed, qT=dynamic keep\-alive, qL=request/response slow down, qs=serialized request, qA=connection abort, qU=new user tracking cookie) .SH OPTIONS .TP \-f Defines the log data format and the positions of data elements processed by this utility. See to the 'LogFormat' directive of the httpd.conf file to see the format defintions of the servers access log data. qslog knows the following elements: I defines the client ip address (%h) R defines the request line (%r) S defines HTTP response status code (%s) B defines the transferred bytes (%b or %O) i defines the received bytes (%I) T defines the request duration (%T) t defines the request duration in milliseconds (may be used instead of T) D defines the request duration in microseconds (may be used instead of T) (%D) k defines the number of keepalive requests on the connection (%k) U defines the user tracking id (%{mod_qos_user_id}e) Q defines the mod_qos_ev event message (%{mod_qos_ev}e) C defines the element for the detailed log (\-c option), e.g. "%U" s arbitrary counter to add up (sum within a minute) a arbitrary counter to build an average from (average per request) A arbitrary counter to build an average from (average per request) E comma separated list of event strings c content type (%{content\-type}o), available in \-pc mode only m request method (GET/POST) (%m), available in \-pc mode only . defines an element to ignore (unknown string) .TP \-o Specifies the file to store the output to. stdout is used if this option is not defined. .TP \-p Used for post processing when reading the log data from a file (cat/pipe). qslog is started using it's offline mode (extracting the time stamps from the log lines) in order to process existing log files. The option "\-pc" may be used alternatively if you want to gather request information per client (identified by IP address (I) or user tracking id (U) showing how many request each client has performed within the captured period of time). "\-pc" supports the format characters IURSBTtDkEcm. The option "\-pu" collects statistics on a per URL level (supports format characters RSTtD). "\-puc" is very similar to "\-pu" but cuts the end (handler) of each URL. .TP \-v Verbose mode. .TP \-x [] Rotates the output file once a day (move). You may specify the number of rotated files to keep. Default are 14. .TP \-u Becomes another user, e.g. www\-data. .TP \-m Calculates free system memory every minute. .TP \-c Enables the collection of log statitics for different request types. 'path' specifies the necessary rule file. Each rule consists of a rule identifier and a regular expression to identify a request seprarated by a colon, e.g., 01:^(/a)|(/c). The regular expressions are matched against the log data element which has been identified by the 'C' format character. .SH EXAMPLE Configuration using pipped logging: CustomLog "|/bin/qslog \-f ISBTQ \-x \-o /var/logs/stat.csv" "%h %>s %b %T %{mod_qos_ev}e" Post processing: LogFormat "%t %h \\"%r\\" %>s %b \\"%{User\-Agent}i\\" %T" cat access_log | /bin/qslog \-f ..IRSB.T \-o /var/logs/stat.csv \-p .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/man1/qslogger.10000664000000000000020000000347513016363764015377 0ustar rootbin.TH QSLOGGER 1 "November 2016" "mod_qos utilities 11.36" "qslogger man page" .SH NAME qslogger \- another shell command interface to the system log module (syslog). .SH SYNOPSIS qslogger [\-t ] [\-f ] [\-l ] [\-x ] [\-r ] [\-d ] [\-u ] [\-p] .SH DESCRIPTION Use this utility to forward log messages to the systems syslog facility, e.g., to forward the messages to a remote host. It reads data from stdin. .SH OPTIONS .TP \-t Defines the tag name which shall be used to define the origin of the messages, e.g. 'httpd'. .TP \-f Defines the syslog facility. Default is 'daemon'. .TP \-u Becomes another user, e.g. www\-data. .TP \-l Defines the minimal severity a message must have in order to be forwarded. Default is 'DEBUG' (fowarding everything). .TP \-x Allows you to add a prefix (literal string) to every message. .TP \-r Specifies a regular expression which shall be used to determine the severity (syslog level) for each log line. The default pattern '^\\[[0\-9a\-zA\-Z :]+\\] \\[([a\-z]+)\\] ' can be used for Apache error log messages but you may configure your own pattern matching other log formats. Use brackets to define the pattern enclosing the severity string. Default level (if severity can't be determined) is defined by the option '\-d' (see below). .TP \-d The default severity if the specified pattern (\-r) does not match and the message's serverity can't be determined. Default is 'NOTICE'. .TP \-p Writes data also to stdout (for piped logging). .SH EXAMPLE ErrorLog "|./qslogger \-t apache \-f local7" .SH SEE ALSO qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qspng(1), qsrotate(1), qssign(1), qstail(1) .SH AUTHOR Pascal Buchbinder, http://mod-qos.sourceforge.net/ mod_qos-11.36/tools/missing0000755000000000000020000002415213016363764014226 0ustar rootbin#! /bin/sh # Common stub for a few missing GNU programs while installing. scriptversion=2012-01-06.13; # UTC # Copyright (C) 1996, 1997, 1999, 2000, 2002, 2003, 2004, 2005, 2006, # 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. # Originally by Fran,cois Pinard , 1996. # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 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# UTC # This originates from X11R5 (mit/util/scripts/install.sh), which was # later released in X11R6 (xc/config/util/install.sh) with the # following copyright and license. # # Copyright (C) 1994 X Consortium # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to # deal in the Software without restriction, including without limitation the # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or # sell copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC- # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # # Except as contained in this notice, the name of the X Consortium shall not # be used in advertising or otherwise to promote the sale, use or other deal- # ings in this Software without prior written authorization from the X Consor- # tium. # # # FSF changes to this file are in the public domain. # # Calling this script install-sh is preferred over install.sh, to prevent # `make' implicit rules from creating a file called install from it # when there is no Makefile. # # This script is compatible with the BSD install script, but was written # from scratch. nl=' ' IFS=" "" $nl" # set DOITPROG to echo to test this script # Don't use :- since 4.3BSD and earlier shells don't like it. doit=${DOITPROG-} if test -z "$doit"; then doit_exec=exec else doit_exec=$doit fi # Put in absolute file names if you don't have them in your path; # or use environment vars. chgrpprog=${CHGRPPROG-chgrp} chmodprog=${CHMODPROG-chmod} chownprog=${CHOWNPROG-chown} cmpprog=${CMPPROG-cmp} cpprog=${CPPROG-cp} mkdirprog=${MKDIRPROG-mkdir} mvprog=${MVPROG-mv} rmprog=${RMPROG-rm} stripprog=${STRIPPROG-strip} posix_glob='?' initialize_posix_glob=' test "$posix_glob" != "?" || { if (set -f) 2>/dev/null; then posix_glob= else posix_glob=: fi } ' posix_mkdir= # Desired mode of installed file. mode=0755 chgrpcmd= chmodcmd=$chmodprog chowncmd= mvcmd=$mvprog rmcmd="$rmprog -f" stripcmd= src= dst= dir_arg= dst_arg= copy_on_change=false no_target_directory= usage="\ Usage: $0 [OPTION]... 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Generated from configure.ac by autoheader. */ /* Define to 1 if you have the header file. */ #undef HAVE_FCNTL_H /* Define to 1 if you have the `fork' function. */ #undef HAVE_FORK /* Define to 1 if you have the `ftruncate' function. */ #undef HAVE_FTRUNCATE /* Define to 1 if you have the `gethostbyname' function. */ #undef HAVE_GETHOSTBYNAME /* Define to 1 if you have the header file. */ #undef HAVE_INTTYPES_H /* Define to 1 if your system has a GNU libc compatible `malloc' function, and to 0 otherwise. */ #undef HAVE_MALLOC /* Define to 1 if you have the header file. */ #undef HAVE_MEMORY_H /* Define to 1 if you have the `memset' function. */ #undef HAVE_MEMSET /* Define to 1 if you have the header file. */ #undef HAVE_NETDB_H /* Define to 1 if you have the `regcomp' function. */ #undef HAVE_REGCOMP /* Define to 1 if you have the `select' function. */ #undef HAVE_SELECT /* Define to 1 if you have the `socket' function. */ #undef HAVE_SOCKET /* Define to 1 if you have the header file. */ #undef HAVE_STDINT_H /* Define to 1 if you have the header file. */ #undef HAVE_STDLIB_H /* Define to 1 if you have the `strchr' function. */ #undef HAVE_STRCHR /* Define to 1 if you have the `strerror' function. */ #undef HAVE_STRERROR /* Define to 1 if you have the header file. */ #undef HAVE_STRINGS_H /* Define to 1 if you have the header file. */ #undef HAVE_STRING_H /* Define to 1 if you have the `strrchr' function. */ #undef HAVE_STRRCHR /* Define to 1 if you have the `strstr' function. */ #undef HAVE_STRSTR /* Define to 1 if you have the header file. */ #undef HAVE_SYS_SOCKET_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_STAT_H /* Define to 1 if you have the header file. */ #undef HAVE_SYS_TYPES_H /* Define to 1 if you have the header file. */ #undef HAVE_UNISTD_H /* Define to 1 if you have the `vfork' function. */ #undef HAVE_VFORK /* Define to 1 if you have the header file. */ #undef HAVE_VFORK_H /* Define to 1 if `fork' works. */ #undef HAVE_WORKING_FORK /* Define to 1 if `vfork' works. */ #undef HAVE_WORKING_VFORK /* Name of package */ #undef PACKAGE /* Define to the address where bug reports for this package should be sent. */ #undef PACKAGE_BUGREPORT /* Define to the full name of this package. */ #undef PACKAGE_NAME /* Define to the full name and version of this package. */ #undef PACKAGE_STRING /* Define to the one symbol short name of this package. */ #undef PACKAGE_TARNAME /* Define to the home page for this package. */ #undef PACKAGE_URL /* Define to the version of this package. */ #undef PACKAGE_VERSION /* Define to 1 if you have the ANSI C header files. */ #undef STDC_HEADERS /* Version number of package */ #undef VERSION /* Define to `int' if doesn't define. */ #undef gid_t /* Define to rpl_malloc if the replacement function should be used. */ #undef malloc /* Define to `int' if does not define. */ #undef pid_t /* Define to `int' if doesn't define. */ #undef uid_t /* Define as `fork' if `vfork' does not work. */ #undef vfork mod_qos-11.36/tools/Makefile.am0000664000000000000020000000004513016363764014660 0ustar rootbinAUTOMAKE_OPTIONS=foreign SUBDIRS=src mod_qos-11.36/doc/0000775000000000000020000000000013016363764012232 5ustar rootbinmod_qos-11.36/doc/qspng.1.html0000664000000000000020000000423013016363764014406 0ustar rootbin Man page of QSPNG

QSPNG

Section: qspng man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qspng - an utility to draw a png graph from qslog(1) output data.  

SYNOPSIS

qspng -i <stat_log_file> -p <parameter> -o <out_file> [-10]  

DESCRIPTION

qspng is a tool to generate png (portable network graphics) raster images files from semicolon separated data generated by the qslog utility. It reads up to the first 1440 entries (24 hours) and prints a graph using the values defined by the 'parameter' name.  

OPTIONS

-i <stats_log_file>
Input file to read data from.
-p <parameter>
Parameter name, e.g. r/s or usr.
-o <out_file>
Output file name, e.g. stat.png.
 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qslog(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR
mod_qos-11.36/doc/qsrotate.1.html0000664000000000000020000000564613016363764015134 0ustar rootbin Man page of QSROTATE

QSROTATE

Section: qsrotate man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qsrotate - a log rotation tool (similar to Apache's rotatelogs).  

SYNOPSIS

qsrotate -o <file> [-s <sec> [-t <hours>]] [-f] [-z] [-g <num>] [-u <name>] [-p]  

DESCRIPTION

qsrotate reads from stdin (piped log) and writes the data to the provided file rotating the file after the specified time.  

OPTIONS

-o <file>
Output log file to write the data to (use an absolute path).
-s <sec>
Rotation interval in seconds, default are 86400 seconds.
-t <hours>
Offset to UTC (enables also DST support), default is 0.
-b <bytes>
File size limitation (default are 2147352576 bytes).
-f
Forced log rotation even no data is written.
-z
Compress (gzip) the rotated file.
-g <num>
Generations (number of files to keep).
-u <name>
Become another user, e.g. www-data.
-p
Writes data also to stdout (for piped logging).
 

EXAMPLE


  TransferLog "|qsrotate -f -z -g 3 -o /dest/file -s 86400"

The name of the rotated file will be /dest/filee.YYYYmmddHHMMSS where YYYYmmddHHMMSS is the system time at which the data has been rotated.  

NOTE

Each qsrotate instance must use an individual file.  

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
NOTE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/qssign.1.html0000664000000000000020000000534113016363764014566 0ustar rootbin Man page of QSSIGN

QSSIGN

Section: qssign man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qssign - an utility to sign and verify the integrity of log data.  

SYNOPSIS

qssign -s|S <secret> [-e] [-v] [-u <name>] [-f <regex>] [-a 'sha1'|'sha256']  

DESCRIPTION

qssign is a log data integrity check tool. It reads log data from stdin (pipe) and writes the data to stdout adding a sequence number and signatur to ever log line.  

OPTIONS

-s <secret>
Passphrase used to calculate signature.
-S <program>
Specifies a program which writes the passphrase to stdout.
-e
Writes end marker when stopping data signing.
-v
Verification mode checking the integrity of signed data.
-u <name>
Becomes another user, e.g. www-data.
-f <regex>
Filter pattern (case sensitive regular expression) for messages which do not need to be signed.
-a 'sha1'|'sha256'
Specifes the algorithm to use. Default is sha1.
 

EXAMPLE

Sign:


 TransferLog "|/bin/qssign -s password -e |/bin/qsrotate -o /var/log/apache/access_log"

Verify:


 cat access_log | qssign -s password -v

 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/qsgeo.1.html0000664000000000000020000000544513016363764014405 0ustar rootbin Man page of QSGEO

QSGEO

Section: qsgeo man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qsgeo - an utility to lookup a client's country code.  

SYNOPSIS

qsgeo -d <path> [-l] [-s] [-ip <ip>]  

DESCRIPTION

Use this utility to resolve the country codes of IP addresses within existing log files. The utility reads the log file data from stdin and writes them, with the injected country code, to stdout.  

OPTIONS

-d <path>
Specifies the path to the geographical database files (CSV file containing IP address ranges and country codes).
-s
Writes a summary of the requests per country only.
-l
Writes the database to stdout (ignoring stdin) inserting local (127.*) and private (10.*, 172.16*, 192.168.*) network addresses.
-ip <ip>
Resolves a single IP address instead of processing a log file.
 

EXAMPLE

Reading the file access_log and adding the country code to the IP address field:


  cat access_log | qsgeo -d GeoIPCountryWhois.csv

Reading the file access_log and showing a summary only:


  cat access_log | qsgeo -d GeoIPCountryWhois.csv -s

Resolving a single IP address:


  qsgeo -d GeoIPCountryWhois.csv -ip 192.84.12.23

 

SEE ALSO

qsexec(1), qsfilter2(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/CHANGES.txt0000664000000000000020000012202013016363764014040 0ustar rootbinVersion 11.36 - Fixed: moves code from "process connection" hook to the "pre connection" hook for Apache 2.4 compatibility and higher efficiency. - Lower severity of message 036 to critical. Version 11.35 - Fixed: potential segfault by mod_ssl in ssl_io_filter_disable() when closing a connection after a failed SSL handshake. Version 11.34 - New variable QS_SetEnvIfResBodyIgnore which might be used to deactivate QS_SetEnvIfResBody. - mod_qos_ev: sets "v" if an IP is marked as VIP. Version 11.33 - QS_ClientLowPrio variable's value contains the status flag representing the tracked attribues. - Sets QS_IsVipRequest variable for marked IP addresses at connection processing handler and propagetes it to every request. - Fixed: message 045 (uri check ignores log-only mode). Version 11.32 - Header filter: accept reagion specific language codes in Accept-Language request header by default. - Compiles also against OpenSSL 1.1.0b. Version 11.31 - QS_SetReqHeader supports header removal (unset) by prefixing the header name with "!". - QS_SetEnvIfResBody supports variable removal (unset) by prefixing the variably with "!". - New cookie data format (user tracking, vip, milestones). Version 11.30 - qslogger supports option "-x" (adding a prefix to every message). - Fixed: calculation of MaxClients for MPM prefork binary (bug reported by by Fergus - thanks!). Version 11.29 - mod_qos_ev variable sets character "u" if server is accessed by a client wihout a user tracking cookie (but QS_UserTrackingCookieName has been configured). - Minor (non-functional) DSCP implementation code changes (incl. new log messages). - Adds mod_qos events "qA" and "qu" to qslog and the output of event counters (q*) has been made optional. Version 11.28 - New variable "QS_Set_DSCP" to set the IP differentiated services code points (DiffServ / RFC 2474). - QS_RedirectIf also supports 301. Version 11.26 - Changed: QS_SrvMaxConn* directive counter's inheritance from the base server to virtual hosts is no longer coupled to other QS_* directive rules. This means, that a virtual host uses the very same counters as the base server as long as neither QS_SrvMaxConn, QS_SrvMaxConnClose, nor QS_SrvMaxConnPerIP has been configured within the virtual host. Version 11.25 - QS_ClientEntries max. value is now limited to 10000000. - New "special code" 'BrokenConnection' for the QS_SetEnvIfStatus direcive. Version 11.24 - Fixed: Apache 2.4 had nested error page when using QS_ErrorPage (bug introduced by version 11.22). Version 11.23 - Directive QS_SetEnvIf supports singe variable match. - qslog -p: * fallback to simple hour/minutes detection * Fixed: writes now statistic line at the "next" minute (m+1:00) Version 11.22 - Disables client behavior (content type) measurement if QS_ClientPrefer has been disabled. - Minor changes to the status viewer. - Fixed: segfault when using HTTP/2. Version 11.21 - Fixed: Implemented graceful restart detection for Apache 2.4 to properly free shared memory and mutexes (prevents from leaking while doing graceful restarts). - Disables keep-alive enforcement for MPM event binaries. Version 11.20 - Adds filter (option -f) to qssign. - Revised QS_ClientPrefer implementation (improved attribute weighting) and the log messages 063/064 have been merged into message 066. Version 11.19 - Updates User-Agent header field pattern for the default QS_RequestHeaderFilterRule rule set and adds the Upgrade-Insecure-Requests header. - QS_ClientGeoCountryDB is able to read IP2LOCATION csv file without prior transformation (country code '-'). - Fixed: QS_ClientIpFromHeader used to determine country code (QS_ClientGeoCountryDB) even the country could not be determined for the connection address (incomplete IP list). Version 11.18 - New directive QS_Status. - QS_SrvSampleRate must be greater then one second. - Avoids using RAND_bytes() and checks if the generator is seeded with enough entropy (mod_qos(08x) messages). - Calculates MaxClients (instead of reading the directive). Version 11.17 - QS_SetEnvIfStatus supports QS_SrvMaxConnPerIP to increment the QS_Block event variable. - qssign features the option "-a" to define which algorithm to use. - Enables QS_SrvMinDataRate, QS_SrvDataRateOff, and QS_SrvMinDataRateOffEvent for Apache 2.4 as smoke test against Apache 2.4.12 and 2.4.16 was now successful (MPM worker and event). The QS_KeepAliveTimeout and QS_MaxKeepAliveRequests directives have been disabled for the MPM event. Apache 2.4 is still not fully tested. Version 11.16 - Adds timeout option to the QS_SrvSerialize directive. Version 11.15 - Increased severity of message 035 and 036 from critical to alert. - Lowered severity of messages 100, 009, and 007 from emergency to critical. - QS_RedirectIf directive supports 307 response code. - Set *_Counter variable of QS_EventLimitCount within post read request handler. - QS_ClientSerialize honors the sequence of receiving requests (fifo) in order to support requests from different clients accessing the server via a proxy. - Fixed: potential deadlock (when reaching the 5min timeout) when using the QS_SrvSerialize directive. Version 11.14 - New directive QS_SrvSerialize. Version 11.13 - Adds option "-u" to the qslogger and qssign utilities. - QS_MileStone features a "think time" attribute which defines how long a client must wait between two milestones. Version 11.12 - Propagates the variables used by QS_ClientEventLimitCount to sub-requests making them available within SSI pages. - New QS_ClientEventLimitCount variable suffixed by "_Remaining" containing the remaining time in seconds a client is still blocked (to be used within error pages to show a client how long he has to wait until he might proceed). - New variable QS_MaxKeepAliveRequests. Version 11.11 - QS_Limit (resp. the event variable processed by the QS_ClientEventLimitCount/QS_CondClientEventLimitCount directives) event may specify a weighting of events defining by how many penalty points the counter shall be increased. Default is 1. Version 11.10 - Adds qslog command to the module (dedicated statisic log facility on a per Apache server instance basis). Version 11.9 - QS_Block event may specify a weighting of events defining by how many penalty points the counter shall be increased. - Fixed: enables per client data store when using the QS_VipIPHeaderName together with the QS_SrvMaxConn[PerIP] directive. Version 11.8 - New console command 'inclimit' increments the QS_ClientEventLimitCount rule counter. - Adds the option "" to the QS_UserTrackingCookieName directive. Version 11.7 - Man page for the module itself. - Adds option "session" to QS_UserTrackingCookieName. Version 11.6 - Adds "Public-Key-Pins" and "Public-Key-Pins-Report-Only" to the pre-defined list of allowed HTTP response header fields. - Adds "Origin" to the pre-defined list of allowed HTTP response header fields. - Fixed: qsrotate reads the size of an existing logfile at startup (required by the "-b" option). Version 11.5 - qslog: improved performance. - Minor code refactoring. - Some log messages (010, 012, 013, 030, 031, 034, 040, 041, 042, 043, 044, 046, 047, 048, 060, 063, 064, 065, 067, 101) indicate if QS_LogOnly mode is active. - Apply QS_LogOnly to header filter (action drop). - qsgeo option "-l": * adds the IP address if missing * fixed: unintentional dropping of valid lines * may be used to normalize "ip2location lite" DB1 files * option "-v" to print all error messages Version 11.4 - Adds request ID to console log messages (07*). - qslog supports writing to stdout (if "-o " is omitted). - qslog: improved performance. Version 11.3 - New directive QS_ClientEventBlockExcludeIP. - Minor changes to the status viewer. - Modified error messages 060 and 067 (adding the "age" parameter which indicates the seconds since the event occured the first time). - Fixed: Message 065 contained wrong directive name. Version 11.2 - Adds variable QS_ResponseDelayTime showing the delay time (us) calcualted for reponse throttling. - New variable QS_Timeout. Version 11.1 - Fixed: Shows "T" log marker only for requests which has really been delayed by mod_qos. - Further improved bytes/sec limitation implementation. Version 11.0 - Highly improves bytes/sec limitation (response throttling) based on the input I got from Jeff Trawick - many thanks! * Calculates delay within filter (immediately(!) when reaching the defined amount of bytes). * Uses nanoseconds delay (instead of milliseconds). * Splits large bucket brigades to 8k blocks (support for local files, not using mod_proxy). * Inserts filter late (after mod_deflate). - User tracking: set Cache-Control header when accessing the cookie check page. - QS_UserTrackingCookieName: improved cookie header processing. - Fixed: 'qslog -pc' does no longer require 'S' nor a date. Version 10.30 - QS_SetReqHeader features the option 'late'. - New console output (without ':' suffix for the IP address). - Console 'search', 'limit', and 'unlimit' command support now the 'event' parameter specifying which QS_ClientEventLimitCount event variable to show/set/clear. Version 10.29 - Supports IPv6 clients. Version 10.28 - Fixed: QS_ClientEventLimit did overwrite counters of other clients if multiple events have been configured. Version 10.27 - qslog features the option "-pu" and "-puc" used to gather request information on a per URL basis. - Fixed: Wrong includes within the support utilities. - Extends QS_ClientSerialize max. timeout from 1 to 5 minutes. Version 10.26 - QS_ClientSerialize supports the QS_ClientIpFromHeader directive. - Refactor method used to determine redirect port (user tracking) supporting servers not using virtual hosts. - Fixed: QS_UserTrackingCookieName uses correct server_rec to retrieve configuration. - Hook implementing user tracking is now called after mod_unique_id. - Slightly changed unique-id generator. - Adds fflush() to qsgrep utility when writing data to stdout. Version 10.25 - QS_EventLimitCount writes the current value to the process environment variables. - Fixed: QS_[Cond]ClientEventLimitCount logs request id and propagtes message code (067) to the QS_ErrorNotes variable. - New variable QS_IPConn representing the number of connections opened from the very same source IP (works in conjunction with QS_SrvMaxConnPerIP only). Version 10.24 - New directive QS_CondClientEventLimitCount. - QS_SrvMinDataRate: limits the max. data rate to the configured value (prevents invalid rate due to misconfiguration server or died child process). Version 10.23 - Fixed: QS_ClientEventLimitCount log message 067 contains now the IP address of the request header if QS_ClientIpFromHeader is used. - QS_SetEnvRes: supports multiple variables with the same name. Version 10.22 - Process QS_SetEnvResHeader(Match) and QS_SetEnvRes at error filter too. Version 10.21 - Fixed: qslogger may had detected the wrong message severity. - Adds debug message when detecting "NullConnection" events. - Built-in request header rules: adapt If-Match, If-None-Match, Cookie, and Cookie2 HTTP header patterns. Version 10.20 - Fixed: QS_CondLocRequestLimitMatch did work only if other QS_Loc* directive had been configured. Version 10.19 - New directive QS_RedirectIf. Version 10.18 - QS_ClientEventLimitCount may be cleared by environment variable (suffixed by "_Clear", e.g. QS_Limit_Clear). Version 10.17 - QS_ClientEventLimitCount supports unlimited number of events. - Stores the value of the QS_ClientEventLimitCount variables as environment variables suffixed by "_Counter", e.g. QS_Limit_Counter for the default QS_Limit variable, in order to be processed by other rules. - Add Content-Security-Policy to the default response header white list. - qslog features enhanced "-pc" mode providing more information: * Collects content type information (%{content-type}o). * Duration between the first and the last request. * Average response in ms. * "ci" indicates if we have seen the client at the end or the beginning of the file (maybe not all requests in the log due to log rotation). * Bytes downloaded. * Writes status characters to stderr. * HTTP request methods (GET/POST) - qsgeo features option "-l" and is able to process "qslog -pc" files. Version 10.16 - qslog adds 'E' (event identifiers) to the format string. QSEVENTPATH environment variable specifies a file containing all known event names (comma separated list). - qslog average counter (a/A) count only if a numeric value is available. - qssing does not try to execute invalid program name (space only). Version 10.15 - qsrotate supports DST and offset to UTC. - Add the "connections" argument to the QS_SrvMaxConnPerIP directive to disable the rule enforcement on idle web servers. Version 10.14 - Minor changes to status viewer (color for QS_EventLimitCount counter). - Q3594444: adapted man page subject. - QS_ErrorResponseCode verifies that the defined error code is valid resp. known by Apache. - Add option "-b" to the qsrotate utility. Version 10.13 - Add new directive QS_EventLimitCount. Version 10.12 - Fixed: Per-client status viewer did not show numbers correctly (depending on the platform it has been compiled for). Version 10.11 - Don't write QS_ClientEventBlockCount event messages (060) every time a client is blocked. - Adjust log message severity of permitted QS_SrvMinDataRate rule violations from 'info' to 'debug'. Version 10.10 - Add DNT HTTP request header to the default request header white list. - qslog "-pc" supports counting established connections. - Fixed: Endless loop when using option "-c" with only one rule. - New utility qshead. Version 10.9 - Q3535677: Don't use prce_info() any longer. - qslog option "-x" allows the specification how many files to keep. Default are 14 days. - qslog counter 'a', 'A', and 's'. - Adapted log message mod_qos(069) - QS_ClientIpFromHeader@logger searches for the header in r->prev and r->main too. Version 10.8 - Fixed: QS_SetEnvIfResBody did not properly detect pattern. - qslogger features severity filter (forward only messages with a matching/higher severity) and adjustable default severity for those log lines which do not contain the severity pattern. Version 10.7 - Writes notice message at server startup if the Apache version is not supported (mod_qos has been implemented for Apache 2.2 worker binaries only). - Use pcre_study() API call only if QOS_EXTRA_USE_PCRE_STUDY has been defined while compiling mod_qos. - Adds fflush() to qslogger/qsexec/qsgeo/qslogger utility when writing data to stdout. Version 10.6 - qslog measures average response time in milliseconds (avms). - Fixed: Viewer shows number of per client ip connections if no server limitations are set (query "option=ip"). - Fixed: qslogger did not compile on non-Linux platforms. Version 10.5 - New utility: qslogger. - JSON includes array index number (note: you need to adapt existing JSON rules). - Experimental: mod_qos compiles with Apache 2.4 * QS_SrvMinDataRate is not available (does not work, use mod_reqtimeout instead) * QS_Srv* directives shall not be used (connection cleanup takes very long) Version 10.4 - Improved qs* utility performance. Version 10.3 - Fixed: ABR in QS_SetEnvIfResBody. Version 10.2 - Fixed: QS_Milestone uses now URL decoding before applying the expression (pcre). - Add the qsgeo utility to the distribution archive file. - Fixed: Supress warning message about missing mod_unique_id if mod_navajo.cpp is available. - New connection correlation id QS_ConnectionId (available as an event for logging purposes). Version 10.1 - QS_ClientIpFromHeader may be used to set QS_Country variable. - Viewer shows QS_AllConn variable. Version 10.0 - New directives QS_ClientGeoCountryDB and QS_ClientGeoCountryPriv. - New variables: QS_AllConn and QS_Country. Version 9.79 - Fixed: Wrong IP conversion (str2long) used by console and QS_ClientIpFromHeader. Version 9.78 - Fixed: QS_UserTrackingCookieName enforcement did not work if server creates internal redirect. Version 9.77 - Use pcre_study() and match_limit where applicable. - qslog features the option "-c" to collect separate statistics, e.g., for different URLs. - qslog features the option "-pc" used to gather request information per client. - New directive QS_SrvSampleRate (may be used to adjust the QS_REQ_RATE_TM sample rate at runtime/post compilation). Not documented. - Fixed: qslog line parsing bug (double backslash). Version 9.76 - New directive QS_ClientIpFromHeader (may be used in conjunction with QS_ClientEventLimitCount only). - qslog measures new connections per minute (%k == 0). - Fixed: Don't show connections in the overview if not measured. - Internal: QS_EventRequestLimit are added (insted of set) to the event table in order to prevent multiple increments by the very same request. Version 9.75 - New directive QS_SetEnvRes. - Viewer keeps value about the last measured kbytes/second result for a longer time. - Update documentation (description of QS_LocKBytesPerSecLimit* directives). Version 9.74 - Fixed header file in qsfilter2 (possible compile problems). - Fixed pre connection handling for outgoing (mod_proxy) connections. Version 9.73 - Q3429879: Format usage text of the mod_qos utilities to man page format. Use " --man" to generate the man page. - Make "NullConnection" detection (known by QS_SetEnvIfStatus) more aggressive. Version 9.72 - Module tries to detect a suitable default error document for QS_ErrorPage automatically. - New status "NullConnection" known by QS_SetEnvIfStatus detecting TCP connections which are not used to send a HTTP request (closed without transmitting HTTP request line and header or denied by any other module). - QS_ClientEventBlockCount is processed at pre_connection hook (more aggressive, before mod_ssl). - Supress warning message about missing mod_unique_id if mod_navajo is available. Version 9.71 - QS_RequestHeaderFilterRule and QS_ResponseHeaderFilterRule may be configured within a host (outside location). - QS_ResponseHeaderFilterRule features the action "silent" which drops header silently without writing a log message. - Headers X-Content-Type-Options and X-XSS-Protection has been added to the default response header rules. - Fixed: Bug in JSON parser. - Fixed: Propagation of Apache environment variables to sub-requests (solves bug when using QS_ClientEventBlockCount and ErrorDocument). Version 9.70 - QS_EventPerSecLimit and QS_EventKBytesPerSecLimit counters are no longer updated if a request has already been denied by a QS_EventRequestLimit rule. - QS_LocRequestPerSecLimit* and QS_LocKBytesPerSecLimit* counter are no longer updated if a request has already been denied by a QS_LocRequestLimit* rule. - Adjust attributes/number of requests required to identify the client behavior. - Update request header white list rule for Content-Type. Version 9.69 - Client behavior (content type a client is downloading) is calculated in a percent of the whole trafic type distribution. The directive QS_ClientTolerance supports only values between 5 and 80. - Add directive QS_ClientContentTypes to define the normally downloaded content types statically (instead of self learning). - Detection if module has been build for a different MPM implementation than the server is using at runtime. - JSON parser processes request query (if starting with an array '[' of object '{') if no body is available. - qssing supports additional log format detection. - qslog supports request time duration measurement in milli- and microseconds too (t and D instead of T). - qslog isolates numeric values (B, i, T, t, D, S) even they are surrounded or prefixed by other characters, e.g. time="". - qslog treats single quoted string with (short) leading name and eaual sign (e.g., agent='Mozilla 1') as single element (offline mode only). - qslog extracts additional time formats (offline mode). - Added "X-Do-Not-Track" to the built-in request header white list. - Minor changes within the status viewer (machine-readable view). Version 9.68 - Change in order to support HP-UX. Version 9.67 - Fixed: QS_ClientSerialize has required other client level control directive. Version 9.66 - Client data store updates entry time stamp every access. Version 9.65 - Fixed: Could not compile the support utility qscheck. - qsexec features option "-c" (pattern clearing the event counter). Version 9.64 - New utility: qsexec - Dynamic client data store partition (depending on the size of the store as defined by QS_ClientEntries) for improved performance. Version 9.62 - Some code refactoring (performance improvements, no functional changes). Version 9.61 - New directive QS_LogOnly may be used to disable rule enforcement (permissive mode). - Minor changes within the status viewer. - "QS_SetEnvIfStatus QS_SrvMinDataRate QS_Block" limits the allowed number of QS_SrvMinDataRate rule violations. Version 9.60 - Fixed: QS_ClientEventBlockCount/QS_ClientEventLimitCount get not reset if client causes events continuously. Version 9.58 - Fixed: IP does not get marked as VIP if QS_ClientPrefer has not been defined. - New variable QS_ErrorNotes. - Add "Transfer-Encoding" (very strict) to the built-in request header white list. Version 9.57 - Status viewer features query name "refresh" which causes the browser to reload the page every 10 seconds. Version 9.56 - Clear per client data store counters at graceful restart to prevent dead enties (counter grow) due unclear client shutdown. - qsfilter2 features url filter (-f). - QS_ClientSerialize does not block for more than 10 minutes. Version 9.55 - Minor changes in configure script (autotools) of the support utilities (png library name). - Add allowed response header X-Content-Security-Policy. - Fixed: qslog cuts last character if parameter is at end of line. - Fixed: qsfilter2 handling of 0 byte characters. Version 9.54 - QS_SetEnvIf may unset a variable. - New variable QS_IsVipRequest. Version 9.53 - Re-introduce qscheck to the support utilities tarball. Version 9.52 - Double per client data store speed (insert new entries) by partitioning of odd and even ip addresses. - Overview section in qos viewer (showing connections and load). - Remove packet-rate measurement. Version 9.51 - Set IP based VIP status to connection even before we receive the HTTP request. - New argument "connections" for the QS_SrvMinDataRate directive allows to disable the limitation if the server is idle/has only little traffic. - Adapt built-in request header filter rules. Version 9.49 - Adapt built-in request header filter rules. - New utility: qsgrep. - Change process order: process QS_SetEnvResHeader after QS_SetEnvResHeaderMatch. - New directive QS_UnsetResHeader. - New directive QS_ClientEventLimitCount (works similar as QS_ClientEventBlockCount but enforces rule at request level only). Version 9.48 - qslog supports mod_logio (%I and %O). - Re-introduce deprecated QS_SetEnvStatus directive (for backwards compatibility). Version 9.47 - QS_SetEnvIfStatus may be used within Locations. - Sequence: execute QS_SetEnvIfStatus earlier (before QS_SetEnvResHeader). - Remove directive QS_SetEnvStatus (alias for QS_SetEnvIfStatus). Version 9.46 - QS_VipUser/QS_VipIpUser detects r->user earlier (@fixup). - QS_KeepAliveTimeout allows value "0" disabling keep-alive. - Process QS_KeepAliveTimeout variable at response too. - QS_SetEnvIfStatus may be specified multiple times for the same response code. - QS_SetEnvIfStatus accepts the definition of a variable value. Version 9.45 - Add directive QS_ClientSerialize. - qslog used new parameter names for event message counts. Version 9.44 - Add directive QS_DisableHandler. Version 9.43 - QS_ClientEventBlockCount rule violation marks client to have low priority. Version 9.42 - Console "action=search&address=*" returns a list of all clients. - Fixed: Removes the apr_shm_destroy() calls to avaoid double-free errors on Linux with old APR library versions. Version 9.41 - Fixed: Console action 'block' did not set event number. Version 9.40 - Fixed: Search IP in console - Fixed: User tracking set-cookie is set twice. - Process QS_SetEnvIfStatus on internal errors (protocol). Version 9.38 - Web console allows the modification of attributes of entries within the client data store. - Status viewer supports query "ip" (showing the IP addresses of the connected clients for all open TCP connections) in machine-readable version. - Status viewer used new delimiter within rule names on machine-readable version (query "auto"). Version 9.37 - Changed QS_ClientPrefer behavior: - never block VIP IP - step 1 denies slow marked clients only - Set the QS_ClientLowPrio variable for clients with low priority. - qssign: add option "-e" which ensures we don't lost any lines. - Update built-in header validation pattern. Version 9.36 - QS_SrvMinDataRateOffEvent processing at fixup (request). - Use apr_time_t instead of time_t. Version 9.34 - qslog counts response status codes per minute. - Use apr_time_t instead of time_t. Version 9.33 - User tracking cookie enforcement may be disabled by setting the DISABLE_UTC_ENFORCEMENT environment variable, e.g. for certain User-Agent headers. Version 9.32 - Status viewer returns "text/plain" for request query 'auto'. Version 9.31 - qsfilter2: encode double quotes and backslashes using their hex values (no escaping within Apache configuration necessary). - Featuring JSON parser which may be used in conjunction with QS_PermitUri. Version 9.30 - Fixed: qsfilter2 did not compile with OpenSSL 1.0.0. Version 9.29 - Add Strict-Transport-Security to the default response header rules. - Directive QS_UserTrackingCookieName features an optional "path" attribute. This path specifies a local error page which is shown to users not accepting the user tracking cookie (note: search engines do probably not support this cookie enforcement and won't be able to crawl the site). - Generates a simple request id (unique per pid/tid within a millisecond) if mod_unique_id has not been loaded. - Fix: syntax check for QS_ErrorPage. Version 9.28 - QS_ErrorPage supports external HTTP redirect (302). - qsfilter2 features a rule id prefix (-k ). - qsfilter2 may process audit log using the sample log format "%h %>s %{qos-loc}n %{qos-path}n%{qos-query}n" without pre-processing. Version 9.27 - Remove qscheck utility (don't compile it by default). - New variable %{qos-loc}n indicating the Location matching a request (may be used to filter the audit log for dedicated locations in order to generate QS_PermitUri rules). - qsfilter2 may process "standard" Apache access log (TransferLog) files too (automatically detecting the request line). - Several adaptions/fixes to the machine-readable version of the status viewer. Version 9.26 - Fix: no mutex destroy (called by register cleanup when destroying pools). Should fix the restart issues with MPM prefork binaries. - Renew user tracking cookie once every month. Version 9.25 - Compile utilities using GNU autotools (hope this works at least on some Linux platforms). Version 9.24 - QS_SrvMinConnPerIP: don't log every rule violation (consolidate log messages and log only every 20th event, see QS_LOG_REPEAT). - Fixed: Removes thread_join for MPM prefork binaries. Version 9.23 - New directives: QS_MileStone*. - Q3032708: see http://www.openssl.org/support/faq.html#LEGAL2. - Add Access-Control-Allow-Origin to the default response header rules. Version 9.22 - New variable: QS_SrvConn - qslog shows total number of requests within a minute. Version 9.21 - New directive QS_UserTrackingCookieName. Version 9.20 - Fixed: Racing condition when using QS_SrvMinDataRate and ThreadsPerChild > 64 may cause segfault. Version 9.19 - Fixed: Segfault at server start if no vhost has been defined. - QS_SrvMinDataRateOffEvent may be used at server and/or location level. Version 9.18 - QS_SrvMaxConnClose supports the definition of the number of keep-alive connections as a percentage of MaxClients. - Update built-in filter pattern of QS_HeaderFilter. Version 9.17 - Output filters are executed after mod_setenvifplus. Version 9.16 - New directive QS_SrvMinDataRateOffEvent. - Changes directive process order (QS_SetEnvIfStatus). - QS_SrvMinDataRate enforces keep-alive timeout (request line must be received within the keep-alive timeout). Version 9.15 - New directives QS_ResponseHeaderFilter and QS_ResponseHeaderFilterRule. Version 9.14 - New directive QS_Decoding. Version 9.12 - New directive QS_SemMemFile. - Uses a checksum to represent IPV6 addresses. Version 9.10 - Fixed: ap_remove_input_filter(). - MaxClients overrides ServerLimit/Treads settings when calculating the maximum number of possible client connections. - Log/debug message about used semaphore files. Version 9.9 - New implementation of the code for QS_SrvMaxConnPerIP to avoid malfunction reported by mod_qos user. - Module dependency (execution order) to mod_setenvifplus. Version 9.8 - Internal code changes/maintenance (join thread). Version 9.7 - mod_qos may be compiled defining QS_NO_STATUS_HOOK which prevents mod_qos from registering to mod_status. Version 9.6 - Environment variable QS_DeflateReqBody to deflate request body data (update to mod_parp 0.8 in order to get a correct content-length header after data deflating). Version 9.5 - New directives QS_SetReqHeader and QS_SetEnv. Version 9.4 - Fixed: Variable %{qos-query} is not set when using the QS_DenyQueryBody directive (and neither QS_DenyBody nor QS_PermitUriBody has been set). - Increased line buffer for qsfilter2 (2MB). Version 9.3 - New directive QS_SetEnvResBody. Version 9.2 - New syntax: QS_VipHeaderName
[=] [drop] QS_VipIPHeaderName
[=] [drop] Version 9.1 - QS_ClientEventRequestLimit limits the number of concurrent events on a per client IP address basis (again increasing the per client memory consumption). Version 9.0 - Client level control: request characteristics measuring adds content type ration and number of 304 responses (requires now 64bytes instead of 48bytes per client on a 32bit system). - Improved client level control (behavior detection, see above) is processed by the QS_ClientPrefer directive. Directive QS_ClientTolerance controls the allowed variation. - Directive QS_SrvPreferNet has been removed. It's recommended to use QS_ClientPrefer instead. Version 8.18 - Q2841328: remove nasty pointer address cast to int. Version 8.16 - Q2834297: use a single mutex for all per virtual host ACT tables (too many mutexes if a server uses many virtual hosts). Version 8.15 - New variable QS_Delay. Version 8.14 - New directive QS_SrvDataRateOff. Version 8.13 - New directives QS_DenyQueryBody and QS_PermitUriBody obsolte QS_DenyBody. - Fixed: QS_Deny*/QS_Permit* directives can handle strings containing 0 bytes (qsfilter2 still can't). Version 8.12 - New directive QS_InvalidUrlEncoding. Version 8.11 - Fixed: Change Apache 2.0 ifdef statements in order to compile with any compiler. Version 8.10 - Fixed: Did not compile with Apache 2.0. Version 8.9 - QS_LimitRequestBody may be defined using mod_setenvif. See new directive order in mod_qos_seq.gif - mod_qos uses anonymous shm by default. - Use constant semaphore/shared memory file names in order to reuse resources after unclear server shutdown. Version 8.5 - New directive QS_EventKBytesPerSecLimit. - New structure of the source archive tarball, see index.html#build for more information about building the binaries. Version 8.3 - QS_RequestHeaderFilterRule has new syntax. - QS_RequestHeaderFilter checks the header length too. It's possible to use "QS_RequestHeaderFilter size" for header length checking only (instead of using LimitRequestFieldsize). Version 8.2 - Fixed: Client prefer, don't mark connection timeout at keep alive end (used in conjunction with QS_ClientPrefer). - Access log events (mod_qos_ev, mod_qos_cr, mod_qos_con) are stored as variables (storing them in the out headers will be removed in one of the next release). Version 8.1 - Fixed: Checks for enabled cc in input filter. - Don't allow requests without an URL. Version 8.0 - New server configuration merger: settings within virtual hosts are merged with the settings from the base server (directives outside virtual hosts). Virtual host settings do not overwrite base settings any more. - New directive QS_LimitRequestBody. Version 7.20 - Fixed: Url decoding detecting %HH encoding (full range). Version 7.19 - QS_DenyEvent may be used to block requests which do NOT have the specified event set. - QS_DenyEvent is applied after the QS_SetEnvIf* directives. See mod_qos_seq.gif for more details. Version 7.18 - QS_Deny/Permit logs on severity warning if action is log only. Version 7.17 - QS_SetEnvIfBody recognizes the occurrence of $1 within the variable value and replaces it by the subexpressions of the defined regex pattern. Version 7.16 - Set audit log variables at header parser hook. Version 7.15 - Directive QS_EventRequestLimit may match variable values too. - New directive QS_SetEnvIfBody. - Audit log is enabled based on the defined log format variables. Version 7.14 - New directive QS_DenyBody implements generic request body filter which can be used in conjunction with QS_DenyQuery, QS_PermitUri, and body data audit log (to be processed my qsfilter2). Version 7.13 - Changed directive processing order, see mod_qos_seq.gif. - New directive QS_SetEnvIfParp (requires mod_parp, see http://parp.sourceforge.net). Important: mod_parp and the QS_SetEnvIfParp directive copies the whole HTTP request message body into the servers memory (requires at least twice the memory size of the posted data). It is very important that you limit the messagy body size for requests processed my mod_parp/QS_SetEnvIfParp using the Apache directive LimitRequestBody. - New directive QS_DenyEvent. - Chuck out mod_qos_control. Version 7.12 - Process event filter only if some rules have been defined. - Recovery rate (decreas limitation) for bandwidth and and request limit has been increased from 16% to 25%. Version 7.11 - New directive QS_EventRequestLimit. Version 7.9 - Fixed: QS_SrvMinDataRate/QS_SrvRequestRate counts all server connections (not only per child process). Version 7.8 - Directive QS_SrvMinDataRate/QS_SrvRequestRate supports min/max limitation in order to increase the minimum upload/download bandwith on multiple simultaneously connections. - Fixed: Activation of QS_SrvMinDataRate did not work (QS_SrvRequestRate only). Version 7.7 - New directive QS_SetEnvIfQuery. Version 7.6 - Use the HTTP response code defined by QS_ErrorResponseCode (default is 500) settings for all denied requests expect for those requests rejected to a QS_Deny*, QS_Permit*, or QS_RequestHeaderFilter rule. Version 7.5 - New diretive QS_ErrorResponseCode - Multiple directives (QS_LocRequestLimit, QS_LocRequestLimitMatch, QS_CondLocRequestLimitMatch, QS_ClientEventBlockCount, and QS_ClientEventPerSecLimit) allow now a limitation set to "0". - QS_SrvMinDataRate replaces QS_SrvRequestRate. Version 7.4 - QS_SrvRequestRate supports chunked POST. Version 7.3 - Partial (not for chunked post) fixed error message for slow server response when using QS_SrvRequestRate. Version 7.2 - New directive QS_SetEnvResHeaderMatch Version 7.1 - QS_SrvMaxConnExcludeIP works for QS_SrvRequestRate (may be used to allow selected IP sources, e.g. slow spider). Version 7.0 - New directive QS_SrvRequestRate enforces minimum upload bandwith (used for TCP DoS prevention). Requires thread support. - QS_ClientPrefer allows definition of free connections in percent in order to override the default of 80%. Available for Apache 2.2 only. - QS_SrvConnTimeout is no longer available. You may use QS_SrvRequestRate instead. Version 6.7 - Detects low priotity clients (clients sending slow or using small data packets get marked as low priority clients). - New directives QS_VipUser and QS_VipIpUser. - Status viewer shows information about client (IP) control status. Version 6.6 - mod_status handler hook supports short status flag. Version 6.5 - New directive QS_SetEnvResHeader. - mod_qos_control supports QS_SetEnvIf, QS_SetEnvStatus, and QS_SetEnvIf directive editing. Version 6.4 - New directive QS_SetEnvStatus. - QS_SetEnvIf for response processing (log transaction). - QS_ClientEventBlockCount on response events (log transaction). Version 6.3 - New directive QS_VipIPHeaderName to mark clients (IP) without providing them full VIP privileges. - Add details to log messages. Version 6.2 - New command: QS_ClientEventPerSecLimit. Version 6.1 - QS_SetEnvIf supports "NOT" operator. - Sets QS_VipRequest variable when receiving valid session cookie. Version 6.0 - mod_qos features per client (IP) control rules. - QS_ClientPrefer, prefers known VIP clients. - QS_ClientEventBlockCount, blocks clients on events. Version 5.17 - New directive QS_EventPerSecLimit allows req/sec limitation for requests causing an event. - New directive QS_SetEnvIf allows combination of multiple environment variables. - Fixed: sem/shm leak when using QS_SrvPreferNet. Version 5.16 - Mark QS_CondLocRequestLimitMatch in status viewer. Version 5.15 - New directive QS_CondLocRequestLimitMatch allows conditional request level rules. Version 5.14 - Remove "nicetitles" from status viewer. Version 5.13 - Again, minor status viewer changes. Version 5.12 - Status viewer uses "nicetitles" to show long rule strings. Version 5.11 - Minor internal code changes. Version 5.10 - Rules do not use individual mutex any longer. This allows an unlimted number of rules. Version 5.9 - mod_qos_control features additional qsfilter2 settings. Version 5.8 - Minor improvements in status viewer. - 5.7 did not compile with Apache 2.0 (ap_regex). Version 5.7 - Important: QS_PermitUri, QS_Deny*, qsfilter2 apply filter rules against unescaped URLs where %, \x and + (new!) is unescaped. You should regenerate your QS_PermitUri rules using the updated version of the qsfilter2 tool provided by this release. - Very first release of mod_qos_control. Version 5.6 - New status viewer implementation. Version 5.4 - Important: QS_PermitUri, QS_Deny*, qsfilter2 apply filter rules against unescaped URLs where % and \x (new!) is unescaped. You should regenerate your QS_PermitUri rules using the updated version of the qsfilter2 tool provided by this release. Version 5.2 - QS_VipHeaderName creates session cookie only once. - VIP has no QS_LocKBytesPerSecLimit/QS_LocKBytesPerSecLimitMatch restrictions. - QS_SrvPreferNet triggers for VIP user on response header only. Version 5.1 - New directive QS_SrvPreferNet. Version 4.30 - Fixed: Segfault at server startup when no virtual host has been configured. Version 4.29 - Debug log level lists available request header filter rules. Version 4.28 - Introduce request header filter. Version 4.18 - Introduce log message numbers and SSI support for error pages. - Add new directive QS_DenyInheritanceOff - Add qsfilter2, a tool to generate request URI white list rules. - Use mod_unique_id to tag error messages. Version 4.13 - QS_PermitUri uses case sensitive pcre. Version 4.11 - Add new directive QS_PermitUri. Version 4.8 - Introduce generic request filtering (QS_Deny* directive). Version 4.3 - New handling of graceful server restart. Version 4.2 - QS_LocKBytesPerSecLimitMatch, QS_LocRequestPerSecLimitMatch Version 4.1 - QS_LocKBytesPerSecLimit Version 4.0 - Introduce request/response throttling. Version 3.12 - Update to mod_qos viewer (status handler). Version 3.10 - Dynamic error page definition using setenvif. Version 3.12 - Introduce mod_qos viewer (status handler). Version 3.5 - QS_KeepAliveTimeout Version 3.4 - QS_SrvConnTimeout Version 3.2 - QS_SrvMaxConnTimeout Version 3.1 - QS_SrvMaxConnExcludeIP Version 3.0 - Introduce connection level control (QS_SrvMaxConnClose QS_SrvMaxConn). Version 2.3 - VIP detection. Version 2.2 - qslog utility. Version 2.0 - New implementation of location based request limitation. Version 1.3 - Initial version (scoreboard based request limitation). mod_qos-11.36/doc/qshead.1.html0000664000000000000020000000354113016363764014527 0ustar rootbin Man page of QSHEAD

QSHEAD

Section: qshead man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qshead - an utility reading from stdin and printing all lines to stdout until reaching the defined pattern.  

SYNOPSIS

qshead -p <pattern>  

DESCRIPTION

qshead reads lines from stdin and prints them to stdout unitl a line contains the specified pattern (literal string).  

OPTIONS

-p <pattern>
Search pattern (literal string).
 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1) qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR
mod_qos-11.36/doc/favicon.ico0000664000000000000020000000257613016363764014365 0ustar rootbinh( )!)!œœŽeees¯ñóò  ;1&`MEEEœÈ¹8‰n5}g}}}o'€=(= _db PB…ʶa"˜v´¢ijjªÚÊ%\Jüüü‡®¢ªÌÀj ‘1u_D¥…æåì1zb ÂËÜ.lX"SD¥ÔÄ>BAh…{1ZQUNÕ‹‹ŠHb[ /=8ewïñõW%QÁ½Ã4i9]Rÿÿÿ/11y}ÕF9MFÝZ@q´´´qtsLYUìììorqggg>>>>>>>>>>>>>>>>>>>>>J&&>>>>(9>?>$$$$$$$ /%>>>$K!B:@>>>>. ED$ <>>><<< +$$><<0C$1H;<<>><>#6><>><">37=>A<>><<<>>G<'$)$< >>><4$!H <>>>>><>><5>>>>>,><<<-8<<<?>>>>>>><<<<>>>>>>>>>>>>>>>>>>>>>>mod_qos-11.36/doc/qsgrep.1.html0000664000000000000020000000460513016363764014565 0ustar rootbin Man page of QSGREP

QSGREP

Section: qsgrep man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qsgrep - prints matching patterns within a file.  

SYNOPSIS

qsgrep -e <pattern> -o <sub string> [<path>]  

DESCRIPTION

qsgrep is a simple tool to search patterns within files. It uses regular expressions to find patterns and prints the submatches within a pre-defined format string.  

OPTIONS

-e <pattern>
Specifes the search pattern.
-o <string>
Defines the output string where $0-$9 are substituted by the submatches of the regular expression.
<path>
Defines the input file to process. qsgrep reads from from standard input if this parameter is omitted.

 

EXAMPLE

Shows the IP addresses of clients causing mod_qos(031) messages):


  qsgrep -e 'mod_qos\(031\).*, c=([a-zA-Z0-9:.]*)' -o 'ip=$1' error_log

 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
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QSEXEC

Section: qsexec man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qsexec - parses the data received via stdin and executes the defined command on a pattern match.

 

SYNOPSIS

qsexec -e <pattern> [-t <number>:<sec>] [-c <pattern> [<command string>]] [-p] [-u <user>] <command string>  

DESCRIPTION

qsexec reads log lines from stdin and searches for the defined pattern. It executes the defined command string on pattern match.  

OPTIONS

-e <pattern>
Specifes the search pattern causing an event which shall trigger the command.
-t <number>:<sec>
Defines the number of pattern match within the the defined number of seconds in order to trigger the command execution. By default, every pattern match causes a command execution.
-c <pattern> [<command string>]
Pattern which clears the event counter. Executes optionally a command if an event command has been executed before.
-p
Writes data also to stdout (for piped logging).
-u <name>
Become another user, e.g. www-data.
<command string>
Defines the event command string where $0-$9 are substituted by the submatches of the regular expression.
 

EXAMPLE

Executes the deny.sh script providing the IP address of the client causing a mod_qos(031) messages whenever the log message appears 10 times within at most one minute:
  ErrorLog "|qsexec -e \'mod_qos\(031\).*, c=([0-9a-zA-Z:.]*)\' -t 10:60 \'/bin/deny.sh $1\'"

 

SEE ALSO

qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/LICENSE.txt0000664000000000000020000004310313016363764014056 0ustar rootbin GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Lesser General Public License instead.) You can apply it to your programs, too. 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GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". Activities other than copying, distribution and modification are not covered by this License; they are outside its scope. 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It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. mod_qos-11.36/doc/qslog.1.html0000664000000000000020000002070513016363764014410 0ustar rootbin Man page of QSLOG

QSLOG

Section: qslog man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qslog - collects request statistics from access log data.  

SYNOPSIS

qslog -f <format_string> -o <out_file> [-p[c|u[c]] [-v]] [-x [<num>]] [-u <name>] [-m] [-c <path>]  

DESCRIPTION

qslog is a real time access log analyzer. It collects the data from stdin. The output is written to the specified file every minute and includes the following entries:
  - requests per second (r/s)
  - number of requests within measured time (req)
  - bytes sent to the client per second (b/s)
  - bytes received from the client per second (ib/s)
  - repsonse status codes within the last minute (1xx,2xx,3xx,4xx,5xx)
  - average response duration (av)
  - average response duration in milliseconds (avms)
  - distribution of response durations within the last minute (<1s,1s,2s,3s,4s,5s,>5)
  - number of established (new) connections within the measured time (esco)
  - average system load (sl)
  - free memory (m) (not available for all platforms)
  - number of client ip addresses seen withn the last 600 seconds (ip)
  - number of different users seen withn the last 600 seconds (usr)
  - number of events identified by the 'E' format character
  - number of mod_qos events within the last minute (qV=create session, qv=VIP IP,qS=session pass, qD=access denied, qK=connection closed, qT=dynamic keep-alive, qL=request/response slow down, qs=serialized request, qA=connection abort, qU=new user tracking cookie)  

OPTIONS

-f <format_string>
Defines the log data format and the positions of data elements processed by this utility. See to the 'LogFormat' directive of the httpd.conf file to see the format defintions of the servers access log data.
     qslog knows the following elements:
     I defines the client ip address (%h)
     R defines the request line (%r)
     S defines HTTP response status code (%s)
     B defines the transferred bytes (%b or %O)
     i defines the received bytes (%I)
     T defines the request duration (%T)
     t defines the request duration in milliseconds (may be used instead of T)
     D defines the request duration in microseconds (may be used instead of T) (%D)
     k defines the number of keepalive requests on the connection (%k)
     U defines the user tracking id (%{mod_qos_user_id}e)
     Q defines the mod_qos_ev event message (%{mod_qos_ev}e)
     C defines the element for the detailed log (-c option), e.g. "%U"
     s arbitrary counter to add up (sum within a minute)
     a arbitrary counter to build an average from (average per request)
     A arbitrary counter to build an average from (average per request)
     E comma separated list of event strings
     c content type (%{content-type}o), available in -pc mode only
     m request method (GET/POST) (%m), available in -pc mode only
     . defines an element to ignore (unknown string)

-o <out_file>
Specifies the file to store the output to. stdout is used if this option is not defined.
-p
Used for post processing when reading the log data from a file (cat/pipe). qslog is started using it's offline mode (extracting the time stamps from the log lines) in order to process existing log files. The option "-pc" may be used alternatively if you want to gather request information per client (identified by IP address (I) or user tracking id (U) showing how many request each client has performed within the captured period of time). "-pc" supports the format characters IURSBTtDkEcm. The option "-pu" collects statistics on a per URL level (supports format characters RSTtD). "-puc" is very similar to "-pu" but cuts the end (handler) of each URL.
-v
Verbose mode.
-x [<num>]
Rotates the output file once a day (move). You may specify the number of rotated files to keep. Default are 14.
-u <name>
Becomes another user, e.g. www-data.
-m
Calculates free system memory every minute.
-c <path>
Enables the collection of log statitics for different request types. 'path' specifies the necessary rule file. Each rule consists of a rule identifier and a regular expression to identify a request seprarated by a colon, e.g., 01:^(/a)|(/c). The regular expressions are matched against the log data element which has been identified by the 'C' format character.
 

EXAMPLE

Configuration using pipped logging:


  CustomLog "|/bin/qslog -f ISBTQ -x -o /var/logs/stat.csv" "%h %>s %b %T %{mod_qos_ev}e"

Post processing:


  LogFormat "%t %h \"%r\" %>s %b \"%{User-Agent}i\" %T"
  cat access_log | /bin/qslog -f ..IRSB.T -o /var/logs/stat.csv -p

 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/qslogger.1.html0000664000000000000020000000637313016363764015113 0ustar rootbin Man page of QSLOGGER

QSLOGGER

Section: qslogger man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qslogger - another shell command interface to the system log module (syslog).  

SYNOPSIS

qslogger [-t <tag>] [-f <facility>] [-l <level>] [-x <prefix>] [-r <expression>] [-d <level>] [-u <name>] [-p]  

DESCRIPTION

Use this utility to forward log messages to the systems syslog facility, e.g., to forward the messages to a remote host. It reads data from stdin.  

OPTIONS

-t <tag>
Defines the tag name which shall be used to define the origin of the messages, e.g. 'httpd'.
-f <facility>
Defines the syslog facility. Default is 'daemon'.
-u <name>
Becomes another user, e.g. www-data.
-l <level>
Defines the minimal severity a message must have in order to be forwarded. Default is 'DEBUG' (fowarding everything).
-x <prefix>
Allows you to add a prefix (literal string) to every message.
-r <expression>
Specifies a regular expression which shall be used to determine the severity (syslog level) for each log line. The default pattern '^\[[0-9a-zA-Z :]+\] \[([a-z]+)\] ' can be used for Apache error log messages but you may configure your own pattern matching other log formats. Use brackets to define the pattern enclosing the severity string. Default level (if severity can't be determined) is defined by the option '-d' (see below).
-d <level>
The default severity if the specified pattern (-r) does not match and the message's serverity can't be determined. Default is 'NOTICE'.
-p
Writes data also to stdout (for piped logging).
 

EXAMPLE


  ErrorLog "|./qslogger -t apache -f local7"

 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
EXAMPLE
SEE ALSO
AUTHOR
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mod_qos

mod_qos
 

In computer networking, the term quality of service (QoS) describes resource management rather than the quality of a service. Quality of service implements control mechanisms to provide different priority to different users, applications, and data connections. It is used to guarantee a certain level of performance to data resources. The term quality of service is often used in the field of wide area network protocols (e.g. ATM) and telephony (e.g. VoIP), but rarely in conjunction with web applications. mod_qos is a quality of service module for the Apache web server implementing control mechanisms that can provide different levels of priority to different HTTP requests.

But why do you need quality of service for a web application? Well, web servers require threads and processes to serve HTTP requests. Each TCP connection to the web server occupies one of these threads respectively processes. Sometimes a server gets too busy to serve every request due to the lack of free processes or threads. Another parameter requiring control by mod_qos is the available bandwidth: all clients communicate to the server over a network link with limited bandwidth. Overfilling the link results in network congestion and poor performance.

Example situations where web applications require QoS:

  • More resources are consumed if request processing by an application takes a long time, e.g. when request processing includes time consuming database queries.
  • Oversubscription of link capabilities due to many concurrent clients uploading or downloading data.
  • Penetration of the web server by attackers (DoS).

mod_qos may be used to determine which requests should be served and which shouldn't in order to avoid resource oversubscription. The module collects different attributes such as the request URL, HTTP request and response headers, the IP source address, country codes, the HTTP response code, history data (based on user session and source IP address), the number of concurrent requests to the server (total or requests having similar attributes), the number of concurrent TCP connections (total or from a single source IP), and so forth.
The rules you want to configure are defined by the module's directives, each reading attributes from different sources and using its own counters to store their status.

Counteractive measures to enforce the defined rules are: request blocking, dynamic timeout adjustment, request delay, response throttling, and dropping of TCP connections.

The current release of the mod_qos module implements control mechanisms to manage:

  • The maximum number of concurrent requests to a location/resource (URL) or virtual host.
  • Limitation of the bandwidth such as the maximum allowed number of requests per second to an URL or the maximum/minimum of downloaded kbytes per second.
  • Limits the number of request events per second (special request conditions).
  • Limits the number of request events within a defined period of time.
  • It can also detect very important persons (VIP) which may access the web server without or with fewer restrictions.
  • Generic request line and header filter to deny unauthorized operations.
  • Request body data limitation and filtering (requires mod_parp ).
  • Limits the number of request events for individual clients (IP).
  • Limitations on the TCP connection level, e.g., the maximum number of allowed connections from a single IP source address or dynamic keep-alive control.
  • Prefers known IP addresses when server runs out of free TCP connections.

mod_qos is an open source software licensed under the GNU General Public License. Downloads are handled by SourceForge.net.

More information about mod_qos:

Build

mod_qos requires OpenSSL, PCRE (don't use the version which comes with the Apache distribution), threading and shared memory support. mod_qos has been developed and fully tested for Apache version 2.2 MPM worker binaries and it is optimized to be used in a reverse proxy server.

Just copy the module into the modules directory of the Apache server's source code and compile it using the following commands (all examples are using Apache 2.2.27 and mod_qos 11.36): 
tar xfz httpd-2.2.27.tar.gz
tar xfz mod_qos-11.36-src.tar.gz
ln -s httpd-2.2.27 httpd
cd httpd
mkdir modules/qos
cp ../mod_qos-11.36/apache2/* modules/qos
./buildconf
./configure --with-mpm=worker --enable-so --enable-qos=shared --enable-ssl --enable-unique-id
make
cd ..
This creates a DSO module that can be loaded into the Apache server using the following directive: 
LoadModule qos_module <path to module>/mod_qos.so

You can also compile the module using apxs alternatively. Your httpd binary must support dynamically loaded objects (DSO). Verify this by checking the availability of mod_so: The command httpd -l must list the mod_so.c module. The following command compiles the module and installs mod_qos into the server's modules directory. 
cd mod_qos-11.36/apache2
apxs -i -c mod_qos.c -lcrypto -lpcre
cd ../..
If the necessary header files of OpenSSL, PCRE, etc. cannot be found, add the -I option to the apxs command to specify the directory where header files can be found and if any of the required libraries cannot be found (may happen if you use mod_qos without mod_ssl), add the -L option to specify the directory where libraries can be found.

The support tools may be built (at least on some Linux platforms) using the GNU autotools. Some of these utilities require third-party libraries such as apr, apr-util, PCRE, libpng, and OpenSSL. 
cd mod_qos-11.36/tools
./configure
make
Note: If you have a different version of aclocal or automake on your system (you get a message like "aclocal-1.11 is missing on your system"), try to execute aclocal manually and execute make again.

Source Code

mod_qos is available for Apache version 2.2 respectively 2.4.

Configuration

Configuration is done on a per-server basis (except the generic request filter). Commands within a virtual host are merged with the settings in the global configuration.

The QS_SrvMinDataRate, QS_SrvRequestRate, QS_RequestHeaderFilterRule and all QS_Client* directives may be used outside of virtual host configurations only.

The QS_LogOnly on directive may be used to put mod_qos into a permissive mode where rule violations are logged only but no actions are applied to requests or connections to enforce a rule. This may be used for test purposes.

Request Level Control

The module features the following directives to control server access on a per-URL level. Only one QS_Loc* rule (URL string or regular expression) of each type is evaluated per request where regular expression rules (*Match) have higher priority than the rules using a literal URL-string. A QS_LocRequestLimit* rule may be used in parallel to a QS_LocRequestPerSecLimit* and/or QS_LocKBytesPerSecLimit* rule if they use the very same URL string or regular expression.
  • QS_LocRequestLimitMatch <regex> <number>
    Defines the number of concurrent requests for the specified request pattern (applied to the unparsed URL). The rule with the lowest number of allowed concurrent connections has the highest priority if multiple expressions match the request. By default, no limitations are active.
  • QS_LocRequestPerSecLimitMatch <regex> <number>
    Defines the allowed number of requests per second to the URL (path and query) pattern. Requests are limited by adding a delay to each request (linear). The delay calculation is based on an average request rate measurement using a sampling rate of 10 seconds. By default, no limitation is active. This directive should be used in conjunction with QS_LocRequestLimitMatch only (you must use the very same regex pattern with the QS_LocRequestPerSecLimitMatch and QS_LocRequestLimitMatch directive) to avoid too many concurrent requests.
  • QS_LocKBytesPerSecLimitMatch <regex> <number>
    Defines the allowed download bandwidth to the location matching the defined URL (path and query) pattern. Responses are slowed down by adding a delay to each response (every 8kbytes). Bandwidth calculation is based on measuring the transferred data. By default, no limitation is active. This directive should be used in conjunction with QS_LocRequestLimitMatch only (you must use the very same regex pattern with the QS_LocKBytesPerSecLimitMatch and QS_LocRequestLimitMatch directive) to avoid too many concurrent requests.
  • QS_LocRequestLimit <location> <number>
    Defines the number of concurrent requests for the specified location (applied to the parsed path). By default, no limitations are active for locations. Has lower priority than QS_LocRequestLimitMatch directives.
  • QS_LocRequestLimitDefault <number>
    Defines the default limitation for the maximum of concurrent requests per location for those locations not defined by any QS_LocRequestLimit directive. It could also be used to limit the number of concurrent requests to a virtual host.
  • QS_LocRequestPerSecLimit <location> <number>
    Defines the allowed number of requests per second to a location, similar to the QS_LocRequestPerSecLimitMatch directive. The maximum number of requests is limited by adding a delay to each request (linear, each request gets the same delay). By default, no limitation is active. This directive should be used in conjunction with QS_LocRequestLimit only (you must use the same location for both directives) to avoid too many concurrent requests.. Has lower priority than QS_LocRequestPerSecLimitMatch.
  • QS_LocKBytesPerSecLimit <location> <number>
    Throttles the download bandwidth to the defined kbytes per second. Works simlar as the QS_LocKBytesPerSecLimitMatch directive slowing down HTTP responses by adding a delay to each response. By default, no limitation is active. This directive should be used in conjunction with QS_LocRequestLimit only (you must use the same location for both directives) to avoid too many concurrent requests.. Has lower priority than QS_LocKBytesPerSecLimitMatch.
The QS_Error* directives are used to control the response given to clients whose requests have been denied.
  • QS_ErrorPage <URL>
    Defines an error page to be returned when a request is denied. The defined URL must be a (S)HTML document accessible by the client. You may enable server-side includes (SSI) in order to present detailed error messages based on the error codes provided by mod_qos.
    Alternatively, a HTTP redirect (302) to a dedicated error page may be defined using an absolute URL defining schema, hostname, and path.
  • QS_ErrorResponseCode <code>
    Defines the HTTP response code which is used when a request is denied. Requests denied at connection level usually get a HTTP 500 response code (ignoring the settings of the QS_ErrorResponseCode and QS_ErrorPage directives).
    Default (no custom error code or page defined) codes are:
     400: if a request has no valid URL.
     403: for requests denied by a QS_Deny*, QS_Permit* or QS_RequestHeaderFilter directive.
     413: when limiting the max. body data length by the QS_LimitRequestBody directive.
     500: for requests denied by any other directive.

Privileged Users

Additional directives are used to identify VIPs (very important persons) and to control the session life time and its cookie format. VIP users have privileged access and less QoS restrictions than ordinary users.
VIP information is stored and evaluated at different levels.
  • Session: VIP identification is stored using a HTTP session cookie. mod_qos starts a new session when detecting a HTTP response header (the header name is defined by the QS_VipHeaderName directive). Alternatively, a new session is started when detecting an authenticated user, see QS_VipUser. The QS_Session* directives are used to set session attributes.
  • Request: The QS_VipRequest process environment may be evaluated by mod_qos rules. This variable is set automatically when receiving a valid mod_qos session cookie. The QS_VipRequest variable may also be set by configuration using a QS_SetEnvIf* or SetEnvIf directive. VIP status lasts for the particular request only.
  • Client IP address: VIP identification may be stored at the server side on a per-client IP address basis. The QS_VipIPHeaderName, QS_VipHeaderName, QS_VipIPUser, and QS_VipUser directives are used to define when an IP address should be marked as a VIP user.
Directives:
  • QS_VipHeaderName <header name>[=<regex>] [drop]
    Defines an HTTP response header which marks a user as a VIP. mod_qos creates a session for this user by setting a cookie, e.g., after successful user authentication. Tests optionally its value against the provided regular expression. Specify the action 'drop' if you want mod_qos to remove this control header from the HTTP response.
  • QS_VipIPHeaderName <header name>[=<regex>] [drop]
    Defines an HTTP response header which marks a client source IP address as a VIP. Tests optionally its value against the provided regular expression. Specify the action 'drop' if you want mod_qos to remove this control header from the HTTP response.
  • QS_VipUser
    Creates a VIP session for users which have been authenticated by the Apache server, e.g., by the standard mod_auth* modules. It works similar to the QS_VipHeaderName directive.
  • QS_VipIPUser
    Marks a source IP address as a VIP if the user has been authenticated by the Apache server, e.g. by the standard mod_auth* modules. It works similar to the QS_VipIPHeaderName directive.
  • QS_SessionTimeout <seconds>
    Defines the session life time for a VIP. It is only used for session based (cookie) VIP identification (not for IP based). Default is 3600 seconds.
  • QS_SessionCookieName <name>
    A cookie is used to identify requests coming from a user which has been identified as a VIP. This directive defines a custom cookie name for the mod_qos session cookie. Default is MODQOS.
  • QS_SessionCookiePath <path>
    Defines the cookie path. Default is "/".
  • QS_SessionKey <string>
    Secret key used for cookie encryption. This key must be defined when using the same session cookie for multiple web servers (load balancing) or the sessions should survive a server restart. By default, a random key is used which changes every server restart.
Sample configuration:
QS_ErrorPage                  /error-docs/qs_error.html

# restricts max concurrent requests for any location which has no
# individual rule:
QS_LocRequestLimitDefault                              200

# limits access to *.gif files to 100 concurrent requests:
QS_LocRequestLimitMatch       "^.*\.gif$"              100

# limits concurrent requests to the locations /images and /app/a:
QS_LocRequestLimit            /images                  100
QS_LocRequestLimit            /app/a                   300
# limits download bandwidth to 5Mbit/sec:
QS_LocKBytesPerSecLimit       /app/a                   640

# two locations (/app/b and /app/c) representing a single application:
QS_LocRequestLimitMatch       "^(/app/b/|/app/c/).*$"  300


# allows the application to nominate VIP users by sending a
# "mod-qos-vip" HTTP response header:
QS_VipHeaderName              mod-qos-vip
QS_SessionKey                 na&5san-sB.F4_0a=%D200ahLK1

The following table shows if a rules may be deactivated for VIPs:
QS_ClientEventBlockCountno
QS_ClientEventLimitCountno
QS_ClientEventPerSecLimitno
QS_ClientEventRequestLimitno
QS_ClientPreferyes
QS_ClientSerializeno
QS_ClientGeoCountryPrivno
QS_CondLocRequestLimitMatchyes
QS_CondClientEventLimitCountno
QS_DenyQueryBodyno
QS_PermitUriBodyno
QS_DenyEventno
QS_DenyPathno
QS_DenyQueryno
QS_DenyRequestLineno
QS_EventKBytesPerSecLimityes
QS_EventPerSecLimityes
QS_EventRequestLimitno
QS_EventLimitCountno
QS_InvalidUrlEncodingno
QS_LimitRequestBodyno
QS_LocKBytesPerSecLimit*yes
QS_LocRequestLimit*yes
QS_LocRequestPerSecLimit*yes
QS_MileStoneno
QS_RedirectIfno
QS_PermitUrino
QS_RequestHeaderFilterno
QS_ResponseHeaderFilterno
QS_SrvMaxConnyes
QS_SrvMaxConnCloseno
QS_SrvMaxConnPerIPyes
QS_SrvMinDataRateyes
QS_SrvSerializeno
  
Note: Event based rules (e.g., QS_ClientEventLimitCount) may evaluate the QS_VipRequest and QS_IsVipRequest variables to decide if the rule should be applied.

Variables

Environment variables are used on a per request level and implement additional control mechanisms. Variables may be set using the standard Apache module mod_setenvif or mod_setenvifplus . See also the QS_SetEnvIf* directives in order to combine multiple variables to form new variables interpreted by mod_qos rules.

These are the variables recognized by mod_qos:
  • QS_ErrorPage=<URL>
    Defines the error page overriding the setting made by the QS_ErrorPage directive.
  • QS_VipRequest=yes
    Disables the per location restrictions for this request. Requires the definition of a VIP header using the QS_VipHeaderName directive (this activates VIP verification). However, such an event does not create a VIP session. The user has the VIP status only for a single request.
    The variable is set by mod_qos when receiving a valid VIP session cookie.
  • QS_KeepAliveTimeout=<seconds>
    Applies dynamic connection keep-alive settings overriding the Apache KeepAliveTimeout directive settings.
  • QS_MaxKeepAliveRequests=<number>
    Applies dynamic connection keep-alive settings overriding the Apache MaxKeepAliveRequests directive settings.
  • QS_Timeout=<seconds>
    Alters the I/O timeout (while reading the request body / writing the response) of the current request overriding the Apache TimeOut directive settings.
  • QS_Set_DSCP=<value>
    Variable used to set the IP differentiated services code points (DiffServ / RFC 2474). This allows you to classify the network traffic when sending the response data to the client. "value" represents the 6-bit DSCP field as a decimal number (0 to 63).
    Commonly used values:
    DSCPClass   DSCPClass
    0none    8Class selector 1
    10Assured forwarding 11    12Assured forwarding 12
    14Assured forwarding 13    16Class selector 2
    18Assured forwarding 21    20Assured forwarding 22
    22Assured forwarding 23    24Class selector 3
    26Assured forwarding 31    28Assured forwarding 32
    30Assured forwarding 33    32Class selector 4
    34Assured forwarding 41    36Assured forwarding 42
    38Assured forwarding 43    40Class selector 5
    44Voice admit    46Expedited forwarding
    48Class selector 6    56Class selector 7
  • QS_Delay=<milliseconds>
    Defines a number of milliseconds to delay the request processing.
  • QS_Event
    The variable processed by the QS_ClientEventPerSecLimit directive.
  • QS_Block[=<number>]
    Variable processed by the QS_ClientEventBlockCount directive.
    The optional number value defines the penalty points to increase the counter (default is 1).
  • QS_Limit[=<number>]
    (Default) variable processed by the QS_ClientEventLimitCount directive.
    The optional number value defines the penalty points to increase the counter (default is 1).
  • *_Clear
    The counter of the variable processed by the QS_ClientEventLimitCount directive are reset if you set the same variable suffixed by _Clear, e.g. QS_Limit_Clear.
  • QS_Serialize
    Variable processed by the QS_ClientSerialize directive.
  • QS_SrvSerialize
    Variable processed by the QS_SrvSerialize directive.
  • QS_Cond
    Variable processed by the QS_CondLocRequestLimitMatch and QS_CondClientEventLimitCount directives.
  • QS_EventRequest
    Variable processed by the QS_ClientEventRequestLimit directive.
Variables set by mod_qos which may be processed by conditional or event based rules, e.g., QS_CondLocRequestLimitMatch:
  • QS_SrvConn
    Number of concurrent connections for this server/virtual host. Value is set when using either the QS_SrvMaxConn, QS_SrvMinDataRate, QS_SrvMaxConnClose, or QS_ClientGeoCountryDB directive.
    Note: value is calulcated when the client establishes the connection and remains the same for all HTTP requests performed on this connection.
  • QS_AllConn
    Number of all concurrent connections for this Apache instance. Value is set when using either the QS_SrvMaxConn, QS_SrvMinDataRate, QS_SrvMaxConnClose, or QS_ClientGeoCountryDB directive.
    Note: value is calulcated when the client establishes the connection and remains the same for all HTTP requests performed on this connection.
  • QS_IPConn
    Number of IP connections open from the current IP address. Variable is available when using the QS_SrvMaxConnPerIP directive.
    Note: value is calulcated when the client establishes the connection and remains the same for all HTTP requests performed on this connection.
  • QS_ClientLowPrio
    The variable is set for connections by clients which have been marked to be processed with low priority, see QS_ClientPrefer. The variable's value is determined when the client opens a new connection and its value represents the status flag of the tracked client attributes (hexadecimal). VIP status is ignored and the variable is always set even the IP has been marked as being VIP.
  • QS_IsVipRequest
    Variable is set when detecting a VIP request (either by cookie, IP address status, valid user, etc.). May be used by various event based directives.
  • *_Counter
    The counter values of the variables used by the QS_ClientEventLimitCount and QS_EventLimitCount directive are stored within the variable whose name is suffixed by _Counter, e.g. QS_Limit_Counter when limiting QS_Limit events.
  • QS_ErrorNotes
    The error code (number only) of a mod_qos log message that has occured during a request.
  • QS_Country
    ISO 3166 country code of client IPv4 address. Only available if the geographical database file has been loaded.
    Note: You may use the QS_ClientIpFromHeader <header> directive to override the client's IP address based on the value within the defined HTTP request header (e.g., X-Forwarded-For) instead of taking the IP address of the client which has opened the TCP connection.
Sample of variable usage:
# privileged access for curl clients:
BrowserMatch             "curl"                   QS_VipRequest=yes

# allows privileged access to a single resource:
SetEnvIf     Request_URI /app/start.html          QS_VipRequest=yes

# allows privileged access from a specified source address
# or source address range:
SetEnvIf     Remote_Addr 172.18.3.32              QS_VipRequest=yes
SetEnvIf     Remote_Addr 192.168.10.              QS_VipRequest=yes

# set keep-alive timeout for MSIE version 5.x browser to 65 seconds:
BrowserMatch             "(MSIE 5\.)"             QS_KeepAliveTimeout=65

# dynamic error page URL (per host error page):
SetEnvIf     Host        (.*)                     QS_ErrorPage=/error-docs/$1.html
# external redirect to a sever hosting the error page:
SetEnvIf     Request_URI /app                     QS_ErrorPage=http://your.server.name/error.html

Conditional Rules

Conditional rules are only enforced if the QS_Cond variable matches the specified pattern.
  • QS_CondLocRequestLimitMatch <regex> <number> <condition>
    Rule works similar to QS_LocRequestLimitMatch but it is only enforced for requests whose QS_Cond variable matches the specified condition (regular expression). Every request matching the defined pattern is counted, but the defined limitation is only enforced for those requests matching the specified condition.
    Only one QS_CondLocRequestLimitMatch rule is evaluated per request.
  • QS_CondClientEventLimitCount <number> <seconds> <variable> <pattern>
    Defines the maximum number of the specified environment variable allowed within the defined time. Directive works similar as QS_ClientEventLimitCount but requests are only blocked if the value of the QS_Cond variable matches the defined pattern (regex). Directive is allowed in global server context only.
Sample of conditional rules:
# set the conditional variable to spider if detecting a
# "slurp" or "googlebot" search engine:
BrowserMatch             "slurp"                  QS_Cond=spider
BrowserMatch             "googlebot"              QS_Cond=spider

# limits the number of concurrent requests to two applications
# (/app/b and /app/c) to 300 but does not allow access by a "spider"
# if the number of concurrent requests exceeds the limit of 10:
QS_LocRequestLimitMatch       "^(/app/b/|/app/c/).*$"  300
QS_CondLocRequestLimitMatch   "^(/app/b/|/app/c/).*$"  10   spider

Events

mod_qos may control the frequency of "events". An event may be any request attribute which can be represented by an environment variable. Such variables may be set by mod_setenvif , mod_setenvifplus , or by other Apache modules. Please adhere to the order of command execution to ensure that the necessary variables are set.
  • QS_EventRequestLimit <env-variable>[=<regex>] <number>
    Defines the number of concurrent events. Directive works similar to QS_LocRequestLimit, but counts the requests having the same environment variable (and optionally matching its value, too) rather than those that have the same URL pattern.
  • QS_EventPerSecLimit [!]<env-variable> <number>
    Defines how often requests may have the defined environment variable (literal string) set. It measures the occurrences of the defined environment variable on a request per seconds level and tries to limit this occurrence to the defined number. It works similar as QS_LocRequestPerSecLimit, but counts only the requests with the specified variable (or without it if the variable name is prefixed by a "!"). If a request matches multiple events, the rule with the lowest bandwidth is applied. Events are limited by adding a delay to each request causing an event.
  • QS_EventKBytesPerSecLimit [!]<env-variable> <number>
    Throttles the download bandwidth of all requests having the defined variable set to the defined kbytes per second. Responses are slowed by adding a delay to each response (every 8kbytes). The delay calculation is based on an average request rate measurement. By default, no limitation is active. This directive should be used in conjunction with QS_EventRequestLimit only (you must use the same variable name for both directives) to avoid too many concurrent requests.
  • QS_EventLimitCount <env-variable> <number> <seconds>
    Defines the maximum number of events allowed within the defined time. Requests are denied when reaching this limitation for the specified time (blocked at request level).
    Note: The current counter value is propagated to the process environment within the variable <env-variable>_Counter.
Mulpiple built-in directives may be used to set or detect events (additional event variable processing could be configured using mod_setenvifplus ).
  • QS_SetEnvIf [!]<env-variable1> [!]<env-variable2> [!]<env-variable=value>
    Sets (or unsets) the environment "variable=value" (literal string) if variable1 (literal string) AND variable2 (literal string) are set in the request environment variable list (not case sensitive). This is used to combine multiple variables to a new event type.
  • QS_SetEnvIf <env-variable1>=<regex> [!]<env-variable>=<value>
    Sets the environment variable if the environment varaiable1's value matches the defined regular expression. $1..$9 within the value and are replaced by parenthesized subexpressions of the regular expression.
  • QS_SetEnv <env-variable> <value>
    Sets the defined variable with the value where the value string may contain other environment variables surrounded by "${" and "}". The variable is only set if all defined variables within the value have been resolved.
  • QS_SetEnvIfQuery <regex> [!]<env-variable>[=<value>]
    Directive works quite similar to the SetEnvIf directive of the Apache module mod_setenvif , but the specified regex is applied against the query string portion of the request line. The directive recognizes the occurrences of $1..$9 within value and replaces them by the sub-expressions of the defined regex pattern.
  • QS_SetEnvIfParp <regex> [!]<env-variable>[=<value>]
    Directive parsing the request payload using the Apache module mod_parp . It matches the request URL query and the HTTP request message body data as well (application/x-www-form-urlencoded, multipart/form-data, and multipart/mixed) and sets the defined process variable (quite similar to the QS_SetEnvIfQuery directive). The directive recognizes the occurrences of $1..$9 within value and replaces them by the sub-expressions of the defined regex pattern. This directive activates mod_parp for every request to the virtual host. You may deactivate mod_parp for selected requests using the SetEnvIf or SetEnvIfPlus directive: unset the variable "parp" to do so. Important: request message body processing requires that the server loads the whole request into its memory (at least twice the length of the message). You should limit the allowed size of the HTTP request message body using the QS_LimitRequestBody directive when using QS_SetEnvIfParp!
  • QS_SetEnvIfBody <regex> [!]<env-variable>[=<value>]
    Directive parsing the request body using the Apache module mod_parp . Specify the content types to process using the mod_parp directive PARP_BodyData and ensure that mod_parp is enabled using the SetEnvIf or SetEnvIfPlus directive. You should limit the allowed size of HTTP requests message body using the QS_LimitRequestBody directive when using mod_parp. The directive recognizes the occurrence of $1 within the variable value and replaces it by the sub-expressions of the defined regex pattern. The regular expressions is case insensitive.
  • QS_SetEnvIfStatus <code> <env-variable>[=<value>]
    Sets the defined variable in the request environment if the HTTP response status code matches the defined code. Default value is the status code, but you might override this by any other value. Directive may be used on a per server or per location basis.
    A possible use case for this directive is the prevention of repetitive occurrence of unwanted response status codes in conjunction with the QS_ClientEventBlockCount or QS_ClientEventLimitCount directive.
    When using the special variable QS_Block, its value is set to "1" by default. There are also three "special codes" available to set the QS_Block event:
    • QS_SrvMinDataRate may be used to set QS_Block events in order to limit the allowed number of QS_SrvMinDataRate rule violations.
    • QS_SrvMaxConnPerIP may be used to increment the QS_Block event when closing connections due to the reach of the limitation configured by the QS_SrvMaxConnPerIP directive.
    • NullConnection detects connections which are closed even no HTTP request has been received.
      Note: The NullConnection event may happen silently (no log message) expect when using LogLevel debug. The parameter may be used to defend against SSL DoS attacks. Please pay attention to the fact that unused speculative TCP pre-connections of browsers may unintentionally cause this event as well.
    • BrokenConnection may be used to mark clients aborting the TCP connection before reading the whole HTTP response.
      Note: Connections may also be aborted by mod_qos if client reads the response too slow.
  • QS_SetEnvIfResBody <string> [!]<env-variable>
    Adds the defined environment variable (e.g., QS_Block) if the response body contains the defined literal string. Used on a per- location level. Only one directive may be defined per location (one search string per response). Prefixing the variably by a "!" lets the variable being removed (unset). You may set the QS_SetEnvIfResBodyIgnore environment variable if you want mod_qos to skip (not parsing) a request's response body.
  • QS_SetEnvRes <env-variable> <regex> <env-variable2>[=<value>]
    Sets the environmet variable (env-variable2) if the regular expression (regex) matches against the value of the environment variable (env-variable). Occurrences of $1..$9 within the value are replaced by parenthesized subexpressions of the regular expression.
  • QS_SetReqHeader [!]<header name> <env-variable> [late]
    Sets the defined HTTP request header to the request if the specified environment variable is set. The header is unset (removed from the request) if the header name is prefixed by a "!".
  • QS_SetEnvResHeader <header name> [drop]
    Sets the defined HTTP response header to the request environment variables. Deletes the specified header if the action 'drop' has been specified.
  • QS_SetEnvResHeaderMatch <header name> <regex>
    Sets the defined HTTP response header to the request environment variables if the specified regular expression (pcre, not case sensitive) matches the header value.
  • QS_UnsetResHeader <header name>
    Removes the specified response header.
  • QS_RedirectIf <variable> <regex> [<code>:]<url>
    Redirects the client to the configured url if the regular expression (case insensitive) matches the value of the the environment variable. Occurrences of $1..$9 within the url are replaced by parenthesized subexpressions of the regular expression. The default status code used by this directive is 302 but you may prefix the url parameter by 307: or 301: to change it to a "307 Temporary Redirect" or "301 Moved Permanently" response. Directive may be used on a per server or per location basis.
Sample of event rules:
# marks clients coming from the internal network:
SetEnvIf    Remote_Addr      ^192\.168\.            QS_Intra

# marks clients neither coming from the internal network
# nor are VIP clients as low priority clients:
QS_SetEnvIf !QS_VipRequest   !QS_Intra              QS_LowPrio=1

# limits the request rate for low priority (neither VIP nor internal)
# clients (and no more than 400 concurrent requests for them):
QS_EventPerSecLimit          QS_LowPrio             100
QS_EventRequestLimit         QS_LowPrio             400

# detects the variable "file" within the query portion of the URL:
QS_SetEnvIfQuery             file=([a-zA-Z]*)       QS_LowPrio=$1

# combine variables and propagate them to the application via HTTP header:
SetEnvIf    Content-Length   ([0-9]*)               QS_Length=$1
QS_SetEnv   QS_Type          "length=${QS_Length}; file=${QS_LowPrio}"
QS_SetReqHeader              X-File                 QS_Type

# limit the max. body size since mod_parp loads the whole message into
# the memory servers's:
QS_LimitRequestBody          131072

# body pattern detection, example limits the maximum number of concurrent
# requests posting "id=1234" to ten:
QS_SetEnvIfParp  id=([0-9]*) PARP_PATTERN=$1
QS_EventRequestLimit         PARP_PATTERN=1234      10
# but ignore requests to the location /main/ (any sub-locations):
SetEnvIf    Request_URI      /main/.*               !parp

Request Level, Generic Filter

These filters are defined on a per- location level and are used to restrict access to resources in general, independent of server resource availability. New rules are added by defining a rule id prefixed by a '+'. Rules are merged to sub-locations. If a rule should not be active for a sub-location, the very same rule must be defined, but instead, the rule id must be prefixed with a '-'. The filter rules are implemented as Perl-compatible regular expressions (pcre) and are applied to the decoded URL components (un-escaped characters, e.g., %20 is a space). The generic request filter ignores the VIP status of a client.
  • QS_DenyRequestLine '+'|'-'<id> 'log'|'deny' <pcre>
    Generic request line (method, path, query, and protocol) filter used to deny access for requests matching the defined expression (pcre, case insensitive). The action taken for matching rules is either 'log' (access is granted but the rule match is logged) or 'deny' (access is denied).
  • QS_DenyPath '+'|'-'<id> 'log'|'deny' <pcre>
    Generic abs_path (see RFC 2616 section 3.2.2) filter used to deny access for requests matching the defined expression (pcre, case insensitive). The action taken for matching rules is either 'log' (access is granted but the rule match is logged) or 'deny' (access is denied).
  • QS_DenyQuery '+'|'-'<id> 'log'|'deny' <pcre>
    Generic query (see RFC 2616 section 3.2.2) filter used to deny access for requests matching the defined expression (pcre, case insensitive). The action taken for matching rules is either 'log' (access is granted but the rule match is logged) or 'deny' (access is denied).
  • QS_InvalidUrlEncoding 'log'|'deny'|'off'
    Enforces correct URL decoding in conjunction with the QS_DenyRequestLine, QS_DenyPath, and QS_DenyQuery directives. Default is "off" which means that incorrect encodings are ignored.
  • QS_Decoding 'uni'
    Enables additional string decoding functions which are applied before matching QS_Deny* and QS_Permit* directives. Default is URL decoding (%xx, \\xHH, '+').
    Available additional decodings:
    • uni: unicode decoding for MS IIS (%uXXXX and \uXXXX) encoded characters.
  • QS_DenyEvent '+'|'-'<id> 'log'|'deny' [!]<env-variable>
    Rule matching requests having the defined process environment variable set (or NOT set if prefixed by a '!'). The action taken for matching rules is either 'log' (access is granted but the rule match is logged) or 'deny' (access is denied).
  • QS_PermitUri '+'|'-'<id> 'log'|'deny' <pcre>
    Generic URL (path and query) filter implementing a request pattern whitelist. Only requests matching at least one QS_PermitUri pattern are allowed. If a QS_PermitUri pattern has been defined and the request does not match any rule, the request is denied. All rules must define the same action. pcre is case sensitive. You may use the qsfilter2 utility to generate rules based on access log files.
  • QS_DenyInheritanceOff
    Disables inheritance of QS_Deny* and QS_Permit* directives (pattern definitions) to a location.
  • QS_RequestHeaderFilter 'on'|'off'|'size'
    Filters request headers using validation rules provided by mod_qos. Suspicious headers (not matching the pattern or those which are too long) are normally dropped (removed from the request). Abnormal content-* headers cause request blocking. Only the defined headers are allowed (whitelist). Custom rules (additional headers or different pattern/size definitions) may be added using the QS_RequestHeaderFilterRule directive. Filter is activated ('on') or deactivated ('off'). The mode 'size' does not verify the pattern but limits the maximum length of request header values (similar to the Apache directive LimitRequestFieldsize but with an individual rule for each header field). Header validation is also useful to avoid bypassing of SetEnvIf directive settings.
  • QS_RequestHeaderFilterRule <header name> 'drop'|'deny' <pcre> <size>
    Used to add custom request header filter rules, e.g., to override the internal rules (different pcre or size) or to add additional headers which should be allowed. Definitions are made globally (outside VirtualHost). A list of all rules is shown at server startup when using LogLevel debug. pcre is case sensitive. The size parameter defines the maximum length of a header value. The action 'drop' removes a header not matching the pcre, the action 'deny' rejects a request including such a header not matching the pcre.
  • QS_ResponseHeaderFilter 'on'|'silent'|'off'
    Filters response headers using validation rules provided by mod_qos. Suspicious headers (not matching the pattern or those which are too long) are removed from the response. Only the defined headers are allowed. Filter is activated ('on' or 'silent') or deactivated ('off').
  • QS_ResponseHeaderFilterRule <header name> <pcre> <size>
    Used to add custom response header filter rules, e.g., to override the internal rules (different pcre or size) or to add additional headers which should be allowed. Definitions are made globally (outside VirtualHost). A list of all rules is shown at server startup when using LogLevel debug. pcre is case sensitive. The size parameter defines the maximum length of a header value.
Sample configuration:
QS_ErrorPage                     /error-docs/qs_error.html

# add a custom request header rule:
QS_RequestHeaderFilterRule       UA-CPU drop "^[a-zA-Z0-9]+$" 20

# enable header validation:
QS_RequestHeaderFilter           on

<Location />
   # don't allow access to the path /app/admin.jsp:
   QS_DenyPath        +admin     deny "^/app/admin.jsp$"

   # allow printable characters only within the request line:
   QS_DenyRequestLine +printable deny ".*[\x00-\x19].*"
</Location>

Body data filtering requires mod_parp which processes the request's message body of the following HTTP request content types: application/x-www-form-urlencoded, multipart/form-data, and multipart/mixed. The content type application/json may be processed by the built-in JSON parser of mod_qos. The body data is transformed into a request query and may be filtered using the QS_DenyQuery and QS_PermitUri directives.

  • QS_DenyQueryBody 'on|'off'
    Enables request body data filtering for the QS_DenyQuery directive.
  • QS_PermitUriBody 'on|'off'
    Enables request body data filtering for the QS_PermitUri directive.
  • QS_LimitRequestBody <bytes>
    Limits the allowed size of an HTTP request message body. This directive may be placed anywhere in the configuration. Alternatively, the limitation may be set as an environment variable using mod_setenvif (overriding the directive settings).
Set the QS_DeflateReqBody variable if the request body data has to be deflated (compressed data) using mod_deflate .
Sample configuration:
# configure the audit log writing the request body data to a file
# (use this log to generate whitelist rules using qsfilter2
# when QS_PermitUriBody has been enabled)
# format:
#   %h:
#   The remote host (used to filter by IP adress).
#   %>s:
#   The HTTP response status code.
#   %{qos-loc}n
#   The matching Location to generate the rules for.
#   %{qos-path}n%{qos-query}n
#   The request data required by qsfilter2 to generate rules.
CustomLog             logs/qsaudit_log  "%h %>s %{qos-loc}n %{qos-path}n%{qos-query}n"

# enable json parser
PARP_BodyData               application/json

QS_RequestHeaderFilter      on

# limit the max. body size since mod_parp loads the whole message into the
# servers's memory:
SetEnvIfNoCase Content-Type application/x-www-form-urlencoded QS_LimitRequestBody=131072
SetEnvIfNoCase Content-Type multipart/form-data               QS_LimitRequestBody=131072
SetEnvIfNoCase Content-Type multipart/mixed                   QS_LimitRequestBody=131072
SetEnvIfNoCase Content-Type application/json                  QS_LimitRequestBody=65536

# enable mod_deflate input filter for compressed request body data:
SetEnvIfNoCase Content-Encoding (gzip)|(compress)|(deflate)   QS_DeflateReqBody

<Location /app>
   # don't allow a certain string pattern within the request query or
   # the request message body data:
   QS_DenyQueryBody              on
   QS_DenyQuery       +s01       deny "(EXEC|SELECT|INSERT|UPDATE|DELETE)"
</Location>
You may enable request body filtering for arbitrary content types:
Sample configuration:
# sample (using the raw body parser of mod_parp) which denies XML documents
# containing the pattern "<code>delete</code>":
PARP_BodyData               text/xml
SetEnvIfNoCase Content-Type text/xml.*                        parp
SetEnvIfNoCase Content-Type application/xml                   QS_LimitRequestBody=65536
QS_SetEnvIfBody             <code>delete</code>               DENYACTION
<Location /app/web>
   QS_DenyEvent             +BADCODE deny                     DENYACTION
</Location>

Milestones

You may define a number of resources (request line patterns) as milestones. A client must access these resources in the correct order as they are defined within the server configuration. A client is not allowed to skip these milestones (but may access any other resource not covered by a milestone in between requests to milestones).
  • QS_MileStone 'log'|'deny' <pattern> [<thinktime>]
    Defines request line patterns a client must access in the defined order as they are defined in the configuration file. The optional 'thinktime' parameter defines the minimal elapse time (in seconds) between two milestones. Milestones are defined on a per server basis, outside location . Access to milestones is tracked by a dedicated session cookie.
  • QS_MileStoneTimeout <seconds>
    Defines the time in seconds within which a client must reach the next milestone. Default are 3600 seconds.
Sample configuration:
# four milestones:
# 1) client must start with /app/index.html
# 2) and then read some images
# 3) before posting data to /app/register
# 4) afterwards, the user may download zip files
QS_MileStone          deny       "^GET /app/index.html"
QS_MileStone          deny       "^GET /app/images/.*"
QS_MileStone          deny       "^POST /app/register*"
QS_MileStone          deny       "^GET /app/.*\.zip HTTP/..."

Connection Level Control

The module features the following directives to control server access on a per-server (TCP connection) level. These directives must only be used in the global server context and for port based virtual hosts (don't use them for name based virtual hosts).

  • QS_SrvMaxConn <number>
    Defines the maximum number of concurrent TCP connections for this server (virtual host).
  • QS_SrvMaxConnClose <number>[%]
    Defines the maximum number of connections for this server (virtual host) supporting HTTP keep-alive. If the number of concurrent connections exceeds this threshold, the TCP connection gets closed after each request. You may specify the number of connections as a percentage of MaxClients if adding the suffix '%' to the specified value.
  • QS_SrvMaxConnPerIP <number> [<connections>]
    Defines the maximum number of connections per source IP address for this server (virtual host). The "connections" argument defines the number of busy connections of the server (all virtual hosts) to enable this limitation, default is 0 (which means that the limitation is always enabled, even the server is idle).
  • QS_SrvMaxConnExcludeIP <address>
    Defines an IP address or address range to be excluded from connection level control restrictions. An address range must end with a ".".
  • QS_SrvMinDataRate <bytes per second> [<max bytes per second> [<connections>]]
    Defines the minimum upload/download throughput a client must generate (the bytes sent/received by the client per seconds). This bandwidth is measured while receiving request data (in: request line, header fields, or body), sending response data (out: header fields, body) and during keep-alive (enforce keep-alive). The client connection is closed if the client does not fulfill this required minimal data rate and the IP address of the causing client is marked in order to be handled with low priority (see the QS_ClientPrefer directive). The "max bytes per second" activates dynamic minimum throughput control: The required minimal throughput is increased in parallel to the number of concurrent clients sending/receiving data (starts increasing when reaching the "connections" threshold). The "max bytes per second" setting is reached when the number of sending/receiving clients is equal to the MaxClients setting. The "connections" argument is used to specify the number of busy TCP connections a server must have to enable this feature (0 by default). It is used to disable the QS_SrvMinDataRate rule enforcement on idle servers.
    This directives must only be used in the global server context.
  • QS_SrvRequestRate <bytes per second> [<max bytes per second>]
    Same as QS_SrvMinDataRate but enforcing a minimal upload (reading request) throughput only.
  • QS_SrvDataRateOff
    Disables the QS_SrvMinDataRate or QS_SrvRequestRate enforcement for a virtual host.
  • QS_SrvMinDataRateOffEvent '+'|'-'<env-variable>
    Disables the QS_SrvMinDataRate or QS_SrvRequestRate enforcement for a connection when the defined process environment variable is set. The '+' prefix is used to add a variable to the configuration while the '-' prefix is used to remove a variable. Directive may be used on a per-location basis.
  • QS_SrvSampleRate <seconds>
    Defines the sampling rate used to measure the data throughput. Default is 5 seconds or the value you have used for QS_REQ_RATE_TM while compiling the module. Increase this value if you want to compensate bandwidth variations.
    This directives must only be used in the global server context.
  • QS_SrvSerialize 'on'|'off' [<timeout>]
    Ensures that not more than one request having the QS_SrvSerialize variable set is processed at the same time by serializing them (process one request after each other). Default is "off".
    Note: Maximum wait time for a request is defined by the optional timeout parameter (in seconds). The default is 300 seconds.
  • Throttling the download bandwidth: mod_qos does not support bandwith limitation on a per connection basis but you might use the RATE_LIMIT filter provided by the Apache module mod_ratelimit to implement a bandwidth rate limitation for connections.
Sample configuration:
# minimum request rate (bytes/sec at request reading):
QS_SrvRequestRate                                 120

# limits the connections for this virtual host:
QS_SrvMaxConn                                     800

# allows keep-alive support till the server reaches 600 connections:
QS_SrvMaxConnClose                                600

# allows max 50 connections from a single ip address:
QS_SrvMaxConnPerIP                                 50

# disables connection restrictions for certain clients:
QS_SrvMaxConnExcludeIP                    172.18.3.32
QS_SrvMaxConnExcludeIP                    192.168.10.

Client Level Control

Client level control rules are applied per client (IP source address). These directives must only be used in the global server context.

  • QS_ClientEntries <number>
    Defines the number of individual clients managed by mod_qos. Default is 50'000 concurrent IP addresses. Each client requires about 150 bytes memory on a 64bit system (depending on how many QS_ClientEventLimitCount events you have configured). Client IP source address store survives graceful server restart. The maximum value is 10'000'000.
  • QS_ClientEventRequestLimit <number>
    Defines the allowed number of concurrent requests coming from the same client source IP address having the QS_EventRequest variable set.
  • QS_ClientEventPerSecLimit <number>
    Defines how often a client may cause a QS_Event per second. Such events are requests having the QS_Event variable set, e.g., defined by using the SetEnvIf directive. The rule is enforced by adding a delay to requests causing the event (similar to the QS_LocRequestPerSecLimit directive).
  • QS_ClientEventBlockCount <number> [<seconds>]
    Defines the maximum number of QS_Block events allowed within the defined time (default is 600 seconds). Client IP is blocked when reaching this counter for the specified time (blocked at connection level: user might not always get a user friendly error response).
    You may use QS_ClientEventBlockExcludeIP <addr> to exclude an IP address from being processed by this limitation (e.g. for trusted clients connecting via a proxy server).
  • QS_ClientEventLimitCount <number> [<seconds> [<variable>]]
    Defines the maximum number of requests having the defined environment variables (QS_Limit by default) set allowed within the defined time (default is 600 seconds). Requests from client IP's reaching this limitation are denied for the specified time (blocked at request level).
    Notes:
    • The value of the variable defines the penalty points by which the counters are increased. Default (empty or non-numeric value) is 1 (increment per request).
    • You may use the QS_ClientIpFromHeader <header> directive to determine the client's IP address based on the defined HTTP request header (e.g., X-Forwarded-For) instead of taking the IP address of the client which has opened the TCP connection. The header must only contain a single IP address.
      You might even use the SetHashHeaderPlus directive to create a hash representing a client using arbitrary HTTP request attributes.
    • The current value of this counter is stored within the variable suffixed by _Counter, e.g. QS_Limit_Counter for further processing by other rules.
    • The remaining time (in seconds) is stored within the variabled suffixed by _Remaining, e.g. QS_Limit_Remaining to be used within SSI error pages.
    • The counter can be reset by setting the environment variable which name is suffixed by _Clear, e.g. QS_Limit_Clear.
    • Adding/removing events (configuration changes) require a server restart (graceful restart is not supported).
    • Only the default rule (QS_Limit) is accessibly by the status viewer (you may use the console to view other variables alternatively).
    • See also QS_CondClientEventLimitCount if you want to enforce a rule under certain conditions only.
  • QS_ClientSerialize
    Serializes requests having the QS_Serialize variable set if they are comming from the same IP address.
    Notes:
    • You may use the QS_ClientIpFromHeader <header> directive to override the client's IP address based on the value within the defined HTTP request header (e.g., X-Forwarded-For) instead of taking the IP address of the client which has opened the TCP connection.
    • Maximum wait time for a request is 5 minutes.
  • QS_ClientPrefer [<percent>]
    Accepts only VIP and high priority clients when the server has less than 80% (or the defined percentage) of free TCP connections. Use the QS_VipHeaderName or QS_VipIPHeaderName directive in order to identify VIP clients. The distinction between high and low priority clients is made based on different client attributes:
    • Data transfer behavior (clients sending data slowly / their transfer rate) (0x01).
    • Accessing "unusual" content types (see QS_ClientTolerance and QS_ClientContentTypes) (0x02/0x04).
    • Causing events blocking / limiting them (0x08/0x10).
    • If their connections get closed due to timeouts (0x20).
    HTTP requests causing a client to get marked as "low priority" have the "r;" event within the mod_qos_ev variable set. You may use the status viewer to determine which client addresses are identified as low priority clients. Feature is disabled if directive is not set.
    A low priority flag is cleared after 24h hours. Clients identified by QS_SrvMaxConnExcludeIP are excluded from connection restrictions. Filter is applied on connection level blocking clients even before the server starts reading the HTTP request data.
  • QS_ClientTolerance <percent>
    Defines the allowed variation from a "normal" client (average) behavior when enabling the QS_ClientPrefer directive. Default is 20%.
  • QS_ClientContentTypes <html> <css/js> <images> <other> <304>
    Defines the distribution of HTTP response content types a client normaly receives when accessing the server. Can only be used in conjunction with the QS_ClientPrefer directive. QS_ClientTolerance defines the allowed deviation from these values. mod_qos normally learns the average behavior automatically by default (you can see the learned values within the status viewer) but you may specify a static configuration using this directive in order to avoid influences by a high number of abnormal clients. Default is automatic self-learning.
  • QS_ClientGeoCountryDB <path>
    Defines the path to the geographical database file. The file is a Comma Separated Value (CSV) format file (example). Each line contains the following fields:
    • Double quoted beginning IPv4 number of the address range, e.g. "1052272128" for 62.184.102.0
    • Double quoted ending IPv4 number of the address range, e.g. "1052272543" for 62.184.103.159.
    • Double quoted ISO 3166 country code, e.g. "FR" for France.
    The QS_Country variable contains the country code for the client's IP address.
    Note: You may use the QS_ClientIpFromHeader <header> directive to override the client's IP address based on the value within the defined HTTP request header (e.g., X-Forwarded-For) instead of taking the IP address of the client which has opened the TCP connection.
  • QS_ClientGeoCountryPriv <list> <connections>
    Defines a comma separated list of country codes for origin client IPv4 address which are allowed to access the server even if the number of busy TCP connections reaches the defined number of connections.
Sample configuration:
# allows not more than 20 events/penalty points per 10 minutes:
QS_ClientEventBlockCount                          20

# don't allow a client to access /app/start.html more than
# 20 times within 10 minutes:
SetEnvIf     Request_URI /app/start.html          QS_Block=1

# don't allow more than 4 "403" status code responses
# (forbidden) for a client within 10 minutes:
QS_SetEnvIfStatus        403                      QS_Block=5

Log Messages

Error Log

mod_qos writes messages to Apache's error log when enforcing a rule. Each error messages is prefixed by an id: mod_qos(<number>). These error codes (number only) are also written to the error notes in order to be processed within error pages using server-side includes (SSI). 
mod_qos(00x):  initialisation event
mod_qos(01x):  request level control event
mod_qos(08x):  request level control event
mod_qos(02x):  vip session event
mod_qos(03x):  connection level event
mod_qos(04x):  generic filter event
mod_qos(14x):  generic filter event
mod_qos(05x):  bandwidth limitation event
mod_qos(06x):  client control event
mod_qos(07x):  console errors
mod_qos(08x):  initialisation/resource errors
mod_qos(10x):  geo errors

Access Log

mod_qos adds event variables to the request record which may be added to access log messages.

  • mod_qos_ev
    Status event message of mod_qos. It's a single letter which is used to signalize an event: "D"=denied, "S"=pass due to an available VIP session, "V"=create VIP session (cookie), "v"=marks an IP as VIP, "K"=connection closed (no keep-alive), "T"=dynamic keep-alive, "r"=IP is marked as a slow/bad client, "L"=means a request slowdown, "u"=request without a user tracking cookie, and "s" is used for serialized requests. The letter "A" for connection abort is set if the status code detection BrokenConnection has been configured.
  • mod_qos_cr
    The number of concurrent requests to a location matching the QS_LocRequestLimit, QS_LocRequestLimitMatch, QS_LocRequestPerSecLimit, QS_LocRequestPerSecLimitMatch, QS_LocKBytesPerSecLimit, QS_LocKBytesPerSecLimitMatch, QS_CondLocRequestLimitMatch, or QS_EventRequestLimit directive.
  • mod_qos_con
    This event shows the number of concurrent connections to this server. Only available if the directive QS_SrvMaxConn is used.
  • mod_qos_user_id
    The user id which is available when enabling the user tracking.
    User tracking is based on a unique identifier generated by mod_unique_id . This unique identifier is stored as a cookie. The user tracking feature is enabled by setting the QS_UserTrackingCookieName <cookie name> [<path>] [<domain>] ['session'] directive.
    Options of the QS_UserTrackingCookieName directive are:
    • The cookie name argument defining the name of the user tracking cookie.
    • The path specifies a local error document which is shown if a user does not accept the cookie (enforcement).
      You may disable this enforcement for certain clients by setting the DISABLE_UTC_ENFORCEMENT environment variable at server level (outside Location), e.g., to allow crawlers not supporting cookies to access your site.
      This option can be used to ensure whether a client/browser accepts cookies at all which might be a requirement of your application.
    • domain defines optionally the domain attribute for the Set-Cookie header.
    • The session flag indicates that a short lived (per session) cookie shall be creaed which won't be stored by the browser permanently.
    Notes:
  • UNIQUE_ID
    This is a unique request id generated by mod_unique_id. mod_qos uses this id to mark messages written to the error log. So it might be useful to log the UNIQUE_ID environment variable as well, in order to correlate errors to access log messages.
  • QS_ConnectionId
    Connecton correlation id used to mark all messages belonging to the same TCP connection.
Sample configuration:
LogFormat "%h %u %t \"%r\" %>s %b %T \"%{content-length}i\" %k \"%{User-Agent}i\" \
           %{mod_qos_cr}e %{mod_qos_ev}e %{mod_qos_con}e %{QS_SrvConn}e %{QS_AllConn}e \
           id=%{UNIQUE_ID}e %{QS_ConnectionId}e %{mod_qos_user_id}e %{QS_Country}e #%P"

Request Statistics

The qslog tool, which is part of the support utilities of mod_qos, may be used to gather request statistics from Apache's access log data. This includes data such as the number of denied requests or new VIP session creations per minute but also total requests per second and other data. Refer to the usage text of the qslog utility for further details. 
CustomLog "|/usr/bin/qslog -o logs/qslog.csv -x -f ISBTQkU" \
          "%h %>s %b %T %{mod_qos_ev}e %k %{mod_qos_user_id}e"

Instead of using the standard Apache log CustomLog directive, you may use the QSLog directive of mod_qos alternatively. This allows you to configure a single log file for your Apache instance (globally, not per virtal host) and you don't have to specify the format (-f) option. 
QSLog "|/usr/bin/qslog -o /var/log/apache/qslog.csv"

Status Viewer

mod_qos features a handler showing the current connection and request status. 
<Location /qos>
   SetHandler qos-viewer
</Location>
A machine-readable version of the status information is available when using the request query string auto, e.g., http://your.server.name/qos?auto. The page updates itself automatically every 10 seconds if you add the request query string refresh, e.g., http://your.server.name/qos?refresh.

The status information is also provided on the server status page of mod_status .
Note: compile mod_qos with the preprocessor definition -DQS_NO_STATUS_HOOK to disable its regisration to the status page rendered by mod_status.

Use the directive QS_DisableHandler on to disable the qos-viewer and qos-console for a virtual host in order to prevent accidental activation of these functions, includng by configuration settings of per-directory files (e.g., .htaccess).

The directive QS_Status 'on'|'off' may be used to enable a status log message (mod_qos(200)) written to the Apache server's ErrorLog. This message contains information about the server's scoreboard. The message is written once every minute.

Web Console

mod_qos implements an Apache handler which acts as a web console for setting attributes via HTTP requests. 
<Location /qos/console>
   SetHandler qos-console
</Location>
Access a location where you have enabled the qos-console handler with a web client and use the following request query parameter to modify the status of a client (may only be used if client level control has been enabled).

  • address=<IP address>
    Specifies the IP address of the client to modify.
  • action='block'|'unblock'|'limit'|'unlimit'|'inclimit'|'setvip'|'unsetvip'|'setlowprio'|'unsetlowprio'|'search'
    Defines the command to be executed, or the attribute to be changed.
    • block: blocks the client for the configured period of time, see also QS_ClientEventBlockCount.
    • unblock: clears the block attribute of the client.
    • limit: blocks (friendly) the client for the configured period of time, see also QS_ClientEventLimitCount.
    • unlimit: clears the limit attribute of the client.
    • inclimit: increments the client's limit counter.
    • setvip: sets the client status to VIP.
    • unsetvip: clears the VIP status for a client.
    • setlowprio: sets the client's priority to 'low'.
    • unsetlowprio: clears the 'low' priority attribute of the client.
    • search: verifies the availability of a client IP address.
      Set '*' for the address parameter in order to get a list of all available clients.
  • event=<name>
    Specifies the event name of the QS_ClientEventLimitCount directive which shall be shown or modified. Default is QS_Limit.
Example to access the console:
http://your.server.name/qos/console?action=setvip&address=194.31.217.21

You may use the status viewer to verify the status of the client.
Example:
http://your.server.name/qos?action=search&address=194.31.217.21

The console may be used to manually update the status of a client (IP) or for automated actions.
Examples:

  • To unlock a client which got blocked by mistake.
  • To synchronize events within multiple Apache instances.
    An example using qsexec is available within the source code repository.
  • Download/upload client status from one Apache instance to another (or to the same, e.g. when restarting an instance).

Utilities

mod_qos provides optional tools for log data processing and analysis:

  • qsexec
    Command execution triggered by patterns within log files.
  • qsfilter2
    Rule generator. Creates QS_Permit* directives and rule patterns from audit log files.
  • qsgeo
    Adds the country code for the client IP address within a log file.
  • qsgrep
    Searches a file for a pattern and prints the data in a new format.
  • qslog
    A real time TransferLog/CustomLog data analyzer. It reads the per request log data from stdin and generates statistic records every minute.
  • qslogger
    Shell command interface to the syslog(3) system log module.
  • qspng
    Creates graphics (png images) from the output of qslog.
  • qsrotate
    Log rotation tool similar to Apache's rotatelogs.
  • qssign
    A log data integrity check tool. It reads log data from stdin (pipe) and writes the signed data to stdout adding a sequence number and signatur to ever log line.
    qssign.rb is a Logstash filter plugin which may be used to verify the signatures of log messages in real time.
  • qstail
    Shows the end of a log file beginning at a defined pattern.

Sample Use Cases

The following use cases may give you an idea about how to use mod_qos.

Slow Application

In case of a very slow application (e.g., at location /ccc), requests wait until a timeout occurs. Due to many waiting requests, there are no free TCP connections left and the web sever is not able to process other requests to applications still working fine, e.g., to /aaa, /bbb /dd1, and /dd2. mod_qos limits the number of concurrent requests to an application in order to assure the availability of other resources.

Example:
# maximum number of active TCP connections is limited to 256 (limited
# by the available memory, adjust the settings according to the
# used hardware):
MaxClients              256

# limits the maximum of concurrent requests per application to 100:
QS_LocRequestLimit      /aaa                100
QS_LocRequestLimit      /bbb                100
QS_LocRequestLimit      /ccc                100
QS_LocRequestLimitMatch "^(/dd1/|/dd2/).*$" 100
The qslog tool may be used to analyze your log files in order to idenitify "slow" resources by using the -pu or -puc option.

HTTP Keep-Alive

The keep-alive extension of HTTP 1.1 allows persistent TCP connections for multiple requests/responses. This accelerates access to the web server due to less and optimized network traffic. The disadvantage of these persistent connections is that server resources are blocked even when no data is exchanged between client and server. mod_qos allows a server to support keep-alive as long as sufficient connections are available, but stops the keep-alive support when it reaches a defined connection threshold.

Example:
# maximum number of active TCP connections is limited to 256 (limited
# by the available memory, adjust the settings according to the
# used hardware):
MaxClients              256

# disables keep-alive when 70% of the TCP connections are occupied:
QS_SrvMaxConnClose      70%

Client Opens Many Concurrent Connections

A single client may open many TCP connections simultaneously in order to download different content from the web server. So the client gets many connections while other users may not be able to access the server because no free connections remain for them. mod_qos can limit the number of concurrent connections for a singe IP source address.

Example:
# maximum number of active TCP connections is limited to 896
# (limited by the available memory, adjust the settings according to the
# used hardware):
MaxClients              896

# don't allow a single client to open more than 50 TCP connections if
# the server has not more than 196 free connections:
QS_SrvMaxConnPerIP      50 700

Many Requests to a Single URL

If you have to limit the number of requests to an URL, mod_qos can help with that, too. You may limit the number of requests per second to an URL. mod_qos will then calculate the necessary delay time to be added to each requests accessing this resource in order to achive the defined limitation.

Example:
# does not allow more than 150 requests/sec:
QS_LocRequestPerSecLimit /download/mod_qos.so.gz 150

# but do not allow more than 600 concurrent requests:
QS_LocRequestLimit       /download/mod_qos.so.gz 600

Alernatively, if you need to reduce the number of processed requests per time to a very low value, you might add a constant delay to each request and process only one of them at the same time. However, this will delay ever request to the defined URI, even the server is idle.

Example:
# does not allow more than 4 requests/sec by adding a wait time of 250ms
# to each request and process only one request at once:
SetEnvIf                 Request_URI ^/download/mod_qos.so.gz QS_SrvSerialize=1
SetEnvIf                 Request_URI ^/download/mod_qos.so.gz QS_Delay=250
QS_SrvSerialize          on

# but do not allow more than 600 concurrent requests:
QS_EventRequestLimit     QS_SrvSerialize 600

mod_qos can also restrict the access to an URL by limiting the number of requests from a single IP address.

Example:
# does not allow more than 4 downloads per minute from a single IP address:
SetEnvIf                     Request_URI ^/download/mod_qos.so.gz LimitDownload
SetEnvIf                     Request_URI ^/download/mod_qos.so.gz QS_Cond=LimitDownload
QS_CondClientEventLimitCount 4 60 LimitDownload LimitDownload

Bandwidth Restriction

It's sometimes necessary to restrict the bandwidth consumed by clients downloading certain type of data in order to avoid that the entire bandwidth of your Internet connection is exploited by less important data traffic, e.g. if your web server hosts large files to be downloaded.
mod_qos allows you to defined the bandwidth which may be used when accessing a defined URL or when the server returns a certain content-type.

Example:
# limits the download bandwidth when accessing ISO images to 1 megabyte/sec
# and does not allow more then 300 clients to download such file type in
# parallel:
QS_LocKBytesPerSecLimitMatch \.iso 1024
QS_LocRequestLimitMatch      \.iso  300

Brute Force

Sometimes, you want to limit how often a resource may be accessed within a certain amount of time, e.g., to defend against brute-force respectively dictionary attacks or an account lockout DoS (someone systematically locks user accounts by too many invalid sign-in attempts). mod_qos allows you to limit this either server wide (any request accessing the resource) by using the QS_EventLimitCount directive, or on a per client IP basis using the QS_ClientEventLimitCount directive.

Example:
# allows a single IP addess to access the URI /wp-login.php not more
# than 10 times within an hour:
SetEnvIf                 Request_URI ^/wp-login.php LimitLogin
QS_ClientEventLimitCount 10 3600 LimitLogin

Too Many Client Connections

mod_qos may prefer "known" client IP addresses in the case that too many clients access the server. "Known" clients are those which have once been identified by the application by setting the corresponding HTTP response header. Such identification may happen at successful user login. Connections from clients which are not known to mod_qos (never marked by the corresponding response header) are denied if the server runs on low TCP connection resources (20% or fewer free connections in this example). mod_qos may also prefer those clients which communicate with the server instantaneously and fast, and denies access to slow clients sending data irregularly, in case the server has not enough resources.

You may also set limitations defining how many resources may be requested by a single IP address source, e.g., using the QS_SrvMaxConnPerIP directive and you can disable HTTP keep-alive dynamically.

For more information about how mod_qos can help you in such situations, see the article Denial of Service Defense.

Example:
# maximum number of active TCP connections is limited to 896 (limited
# by the available memory, adjust the settings according to the used
# hardware):
MaxClients               896

# idle timeout:
Timeout                  10

# keep alive (for up to 85% of all connections):
KeepAlive                on
MaxKeepAliveRequests     60
KeepAliveTimeout         3
QS_SrvMaxConnClose       85%

# name of the HTTP response header which marks preferred clients (this
# may be used to let the application decide which clients are "good" and
# have higher privileges, e.g. authenticated users.
# you may also use the QS_VipIPUser directive when using an Apache 
# authentication module such as mod_auth_basic or mod_auth_oid ):
QS_VipIPHeaderName       mod-qos-login

# enables the known client prefer mode (server allows new TCP connections
# from known/good clients only if there are more than 716 open TCP connections):
QS_ClientPrefer          80%

# don't allow more than 30 TCP connections per client source address being
# processed if the server has 500 or more open connections:
QS_SrvMaxConnPerIP       30 500


© 2007-2016, Pascal Buchbinder mod_qos-11.36/doc/qsfilter2.1.html0000664000000000000020000002057113016363764015177 0ustar rootbin Man page of QSFILTER2

QSFILTER2

Section: qsfilter2 man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qsfilter2 - an utility to generate mod_qos request line rules out from existing access/audit log data.  

SYNOPSIS

qsfilter2 -i <path> [-c <path>] [-d <num>] [-h] [-b <num>] [-p|-s|-m|-o] [-l <len>] [-n] [-e] [-u 'uni'] [-k <prefix>] [-t] [-f <path>] [-v 0|1|2]  

DESCRIPTION

overview

mod_qos implements a request filter which validates each request line. The module supports both, negative and positive security model. The QS_Deny* directives are used to specify request line patterns which are not allowed to access the server (negative security model / blacklist). These rules are used to restrict access to certain resources which should not be available to users or to protect the server from malicious patterns. The QS_Permit* rules implement a positive security model (whitelist). These directives are used to define allowed request line patterns. Request which do not match any of thses patterns are not allowed to access the server.

qsfilter2 is an audit log analyzer used to generate filter rules (perl compatible regular expressions) which may be used by mod_qos to deny access for suspect requests (QS_PermitUri rules). It parses existing audit log files in order to generate request patterns covering all allowed requests.  

OPTIONS

-i <path>
Input file containing request URIs. The URIs for this file have to be extracted from the servers access logs. Each line of the input file contains a request URI consiting of a path and and query.
     Example:
       /aaa/index.do
       /aaa/edit?image=1.jpg
       /aaa/image/1.jpg
       /aaa/view?page=1
       /aaa/edit?document=1

These access log data must include current request URIs but also request lines from previous rule generation steps. It must also include request lines which cover manually generated rules.

-c <path>
mod_qos configuration file defining QS_DenyRequestLine and QS_PermitUri directives. qsfilter2 generates rules from access log data automatically. Manually generated rules (QS_PermitUri) may be provided from this file. Note: each manual rule must be represented by a request URI in the input data (-i) in order to make sure not to be deleted by the rule optimisation algorithm. QS_Deny* rules from this file are used to filter request lines which should not be used for whitelist rule generation.
     Example:
       # manually defined whitelist rule:
       QS_PermitUri +view deny "^[/a-zA-Z0-9]+/view\?(page=[0-9]+)?$"
       # filter unwanted request line patterns:
       QS_DenyRequestLine +printable deny ".*[\x00-\x19].*"

-d <num>
Depth (sub locations) of the path string which is defined as a literal string. Default is 1.
-h
Always use a string representing the handler name in the path even the url does not have a query. See also -d option.
-b <num>
Replaces url pattern by the regular expression when detecting a base64/hex encoded string. Detecting sensibility is defined by a numeric value. You should use values higher than 5 (default) or 0 to disable this function.
-p
Repesents query by pcre only (no literal strings).
-s
Uses one single pcre for the whole query string.
-m
Uses one pcre for multipe query values (recommended mode).
-o
Does not care the order of query parameters.
-l <len>
Outsizes the query length by the defined length ({0,size+len}), default is 10.
-n
Disables redundant rules elimination.
-e
Exit on error.
-u 'uni'
Enables additional decoding methods. Use the same settings as you have used for the QS_Decoding directive.
-p
Repesents query by pcre only (no literal strings). Determines the worst case performance for the generated whitelist by applying each rule for each request line (output is real time filter duration per request line in milliseconds).
-k <prefix>
Prefix used to generate rule identifiers (QSF by default).
-t
Calculates the maximal latency per request (worst case) using the generated rules.
-f <path>
Filters the input by the provided path (prefix) only processing matching lines.
-v <level>
Verbose mode. (0=silent, 1=rule source, 2=detailed). Default is 1. Don't use rules you haven't checked the request data used to generate it! Level 1 is highly recommended (as long as you don't have created the log data using your own web crawler).
 

OUTPUT

The output of qsfilter2 is written to stdout. The output contains the generated QS_PermitUri directives but also information about the source which has been used to generate these rules. It is very important to check the validity of each request line which has been used to calculate the QS_PermitUri rules. Each request line which has been used to generate a new rule is shown in the output prefixed by "ADD line <line number>:". These request lines should be stored and reused at any later rule generation (add them to the URI input file). The subsequent line shows the generated rule. At the end of data processing a list of all generated QS_PermitUri rules is shown. These directives may be used withn the configuration file used by mod_qos.  

EXAMPLE


  ./qsfilter2 -i loc.txt -c httpd.conf -m -e
  ...
  # ADD line 1: /aaa/index.do
  # 003 ^(/[a-zA-Z0-9\-_]+)+[/]?\.?[a-zA-Z]{0,4}$
  # ADD line 3: /aaa/view?page=1
  # --- ^[/a-zA-Z0-9]+/view\?(page=[0-9]+)?$
  # ADD line 4: /aaa/edit?document=1
  # 004 ^[/a-zA-Z]+/edit\?((document)(=[0-9]*)*[&]?)*$
  # ADD line 5: /aaa/edit?image=1.jpg
  # 005 ^[/a-zA-Z]+/edit\?((image)(=[0-9\.a-zA-Z]*)*[&]?)*$
  ...
  QS_PermitUri +QSF001 deny "^[/a-zA-Z]+/edit\?((document|image)(=[0-9\.a-zA-Z]*)*[&]?)*$"
  QS_PermitUri +QSF002 deny "^[/a-zA-Z0-9]+/view\?(page=[0-9]+)?$"
  QS_PermitUri +QSF003 deny "^(/[a-zA-Z0-9\-_]+)+[/]?\.?[a-zA-Z]{0,4}$"

 

SEE ALSO

qsexec(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1), qstail(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
OUTPUT
EXAMPLE
SEE ALSO
AUTHOR
mod_qos-11.36/doc/qstail.1.html0000664000000000000020000000376513016363764014567 0ustar rootbin Man page of QSTAIL

QSTAIL

Section: qstail man page (1)
Updated: November 2016
Index Return to Main Contents

 

NAME

qstail - an utility printing the end of a log file starting at the specified pattern.  

SYNOPSIS

qstail -i <path> -p <pattern>  

DESCRIPTION

qstail shows the end of a log file beginning with the line containing the specified pattern. This may be used to show all lines which has been written after a certain event (e.g., server restart) or time stamp.  

OPTIONS

-i <path>
Input file to read the data from.
-p <pattern>
Search pattern (literal string).
 

SEE ALSO

qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qshead(1), qslog(1), qslogger(1), qspng(1), qsrotate(1), qssign(1)  

AUTHOR

Pascal Buchbinder, http://mod-qos.sourceforge.net/

 

Index

NAME
SYNOPSIS
DESCRIPTION
OPTIONS
SEE ALSO
AUTHOR
mod_qos-11.36/doc/MESSAGES.txt0000664000000000000020000001557413016363764014216 0ustar rootbinmod_qos(001): QS_ClientEventLimitCount directives can't be added/removed by graceful restart. A server restart is required to apply the new configuration! mod_qos(002): failed to create shared memory (ACT)(%s): %s (%lu bytes) mod_qos(002): failed to create shared memory (client control)(%s): %s (%d bytes) mod_qos(003): request level rule %s has no concurrent request limitations mod_qos(004): failed to create mutex (ACT)(%s): %s mod_qos(004): failed to create mutex (client control)(%s): %s mod_qos(006): could not compile request header filter rules: %s mod_qos(006): could not compile response header filter rules: %s mod_qos(008): could not create supervisor thread (%s), disable request rate enforcement mod_qos(009): failed to initialize the qslog facility '%s' mod_qos(009): found default error document '%s'. Use the QS_ErrorPage directive to override this default page. mod_qos(009): loaded MPM is '%s' but mod_qos should be used with MPM 'Worker' only. mod_qos(009): mod_parp not available (required by some directives) mod_qos(009): mod_unique_id not available (mod_qos generates simple request id if required) mod_qos(009): running in 'log only' mode - rules are NOT enforced! mod_qos(009): server version is %d.%d but mod_qos should be used with Apache 2.2. mod_qos(010): access denied%s, QS_LocRequestLimit* rule: %s(%d), concurrent requests=%d, c=%s, id=%s mod_qos(011): access denied, QS_CondLocRequestLimitMatch rule: %s(%d), concurrent requests=%d, c=%s, id=%s mod_qos(012): access denied%s, QS_EventRequestLimit rule: %s(%d), concurrent requests=%d, c=%s, id=%s mod_qos(013): access denied%s, QS_EventLimitCount rule: %s, max=%d, current=%d, c=%s, id=%s mod_qos(021): session cookie verification failed, decoding failed, id=%s mod_qos(023): session cookie verification failed, expired, id=%s mod_qos(025): failed to create session cookie, id=%s mod_qos(030): access denied%s, QS_SrvMaxConn rule: max=%d, concurrent connections=%d, c=%s mod_qos(031): access denied (previously), QS_SrvMaxConnPerIP rule: max=%d, concurrent connections=%d, message repeated %d times, c=%s mod_qos(031): access denied%s, QS_SrvMaxConnPerIP rule: max=%d, concurrent connections=%d, c=%s mod_qos(031): access denied%s, QS_SrvMaxConnPerIP rule: max=%d, concurrent connections=%d, message repeated %d times, c=%s mod_qos(034): %s, QS_SrvMinDataRate rule (enforce keep-alive), c=%s mod_qos(034): %s, QS_SrvMinDataRate rule (%s): min=%d, this connection=%d, c=%s mod_qos(035): QS_SrvMaxConn: no free IP slot available! Check log for unclean child exit and consider to do a graceful server restart if this condition persists. mod_qos(036): QS_SrvMinDataRate: unexpected connection status! connections=%d, cal. request rate=%d, max. limit=%d. Check log for unclean child exit and consider to do a graceful server restart if this condition persists. mod_qos(037): loaded MPM is 'event' and the QS_KeepAliveTimeout/QS_MaxKeepAliveRequests directives can't be used. mod_qos(038): DSCP, failed to set socket options, QS_Set_DSCP=%s, socket=%s, rc=%d, id=%s mod_qos(040): access denied, %s rule id: %s (%s), action=%s, c=%s, id=%s mod_qos(041): access denied, no permit rule match, action=%s, c=%s, id=%s mod_qos(042): drop %s header%s: '%s: %s', %s, c=%s, id=%s mod_qos(043): access denied%s, %s header: '%s: %s', %s, c=%s, id=%s mod_qos(044): access denied%s, QS_LimitRequestBody: invalid content-length header, c=%s, id=%s mod_qos(044): access denied%s, QS_LimitRequestBody: max=%ld this=%ld, c=%s, id=%s mod_qos(045): access denied, invalid request line: can't parse uri, c=%s, id=%s mod_qos(046): access denied, invalid url encoding, action=%s, c=%s, id=%s mod_qos(047): access denied, reached milestone '%d' (%s), user has already passed '%s', action=%s, c=%s, id=%s mod_qos(048): access denied, invalid JSON syntax (%s), action=%s, c=%s, id=%s mod_qos(049): redirect to %s, var=%s, action=%s, c=%s, id=%s mod_qos(050): request rate limit, rule: %s(%ld), req/sec=%ld, delay=%dms%s mod_qos(051): request rate limit, rule: %s(%ld), req/sec=%ld, delay=%dms mod_qos(060): access denied (previously), QS_ClientEventBlockCount rule: max=%d, current=%d, message repeated %d times, c=%s mod_qos(060): access denied, QS_ClientEventBlockCount rule: max=%d, current=%d, age=%ld, c=%s mod_qos(060): access denied, QS_ClientEventBlockCount rule: max=%d, current=%d, message repeated %d times, c=%s mod_qos(060): access denied%s, QS_ClientEventBlockCount rule: max=%d, current=%d, age=%ld, c=%s mod_qos(061): request rate limit, rule: QS_Event(%d), req/sec=%ld, delay=%dms%s mod_qos(062): request rate limit, rule: QS_Event(%d), req/sec=%ld, delay=%dms mod_qos(065): access denied%s, QS_ClientEventRequestLimit rule: max=%d, current=%d, c=%s, id=%s mod_qos(066): access denied%s, QS_ClientPrefer rule (penalty=%d 0x%02x): max=%d, concurrent connections=%d, c=%s mod_qos(067): access denied%s, QS_%sClientEventLimitCount rule: event=%s, max=%d, current=%d, age=%ld, c=%s mod_qos(068): QS_ClientSerialize exceeds limit of 5 minutes, c=%s, id=%s mod_qos(068): QS_SrvSerialize exceeds limit of %d seconds, id=%s mod_qos(069): no valid IP header found (@hp): header '%s' not available, fallback to connection's IP %s, id=%s mod_qos(069): no valid IP header found (@hp): invalid header value '%s', fallback to connection's IP %s, id=%s mod_qos(069): no valid IP header found (@logger): header '%s' not available, fallback to connection's IP %s, id=%s mod_qos(069): no valid IP header found (@logger): invalid header value '%s', fallback to connection's IP %s, id=%s mod_qos(069): no valid IP header found (@prr): header '%s' not available, fallback to connection's IP %s, id=%s mod_qos(069): no valid IP header found (@prr): invalid header value '%s', fallback to connection's IP %s, id=%s mod_qos(070): console, not acceptable, client data store has not been enabled, id=%s mod_qos(070): console, not acceptable, invalid ip/wrong format, id=%s mod_qos(070): console, not acceptable, missing request query (action/address), id=%s mod_qos(070): console, not acceptable, qos client control has not been activated, id=%s mod_qos(070): console, not acceptable, unknown action '%s', id=%s mod_qos(071): console, action '%s' applied to client ip entry '%s', id=%s mod_qos(071): console, add new client ip entry '%s', is=%s mod_qos(072): handler has been disabled for this host mod_qos(072): handler has been disabled for this host, id=%s mod_qos(080): Can't generate random data, id=%s mod_qos(083): Can't generate random data. mod_qos(100): QS_ClientGeoCountryDB has not been configured mod_qos(101): access denied%s, QS_ClientGeoCountryPriv rule: max=%d, concurrent connections=%d, c=%s country=%s mod_qos(147): access denied, reached milestone '%d' (%s), earlier than expected (right after %ld instead of %d seconds), action=%s, c=%s, id=%s mod_qos(200): { "scoreboard": { "open": %d, "waiting": %d, "read": %d, "write": %d, "keepalive": %d, "start": %d, "log": %d, "dns": %d, "closing": %d, "finishing": %d, "idle": %d }, "maxclients": { "max": %d, "busy": %d } } mod_qos-11.36/apache2/0000775000000000000020000000000013016363764012770 5ustar rootbinmod_qos-11.36/apache2/mod_qos.c0000644000000000000020000174712313016363764014612 0ustar rootbin/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*- */ /** * Quality of service module for Apache Web Server. * * The Apache Web Servers requires threads and processes to serve * requests. Each TCP connection to the web server occupies one * thread or process. Sometimes, a server gets too busy to serve * every request due the lack of free processes or threads. * * This module implements control mechanisms that can provide * different priority to different requests. * * mod_qos requires OpenSSL, PCRE, threading and shared memory * support. It has been developed and fully tested for Apache * httpd version 2.2 MPM worker binaries and is optimized to be * used in a reverse proxy. * * See http://mod-qos.sourceforge.net/ for further * details and to optain the latest version of this module. * * Copyright (C) 2007-2016 Pascal Buchbinder * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * * This program is released under the GPL with the additional * exemption that compiling, linking, and/or using OpenSSL is * allowed. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, * MA 02110-1301, USA. * */ /************************************************************************ * Version ***********************************************************************/ static const char revision[] = "$Id: mod_qos.c,v 5.639 2016/11/26 19:49:54 pbuchbinder Exp $"; static const char g_revision[] = "11.36"; /************************************************************************ * Includes ***********************************************************************/ /* std */ #include #include #include #include #include // for socket options #ifdef __unix__ #include #include #endif /* apache */ #include #include #include #include #include #include #define CORE_PRIVATE #include #include #include #include #include #include #include /* apr / scrlib */ #include #include #include #include #include #include #ifdef AP_NEED_SET_MUTEX_PERMS #include #endif /* mod_qos requires OpenSSL */ #include #include #include /* additional modules */ #include "mod_status.h" /* this */ #ifdef QS_MOD_EXT_HOOKS #include "mod_qos.h" #endif /************************************************************************ * defines ***********************************************************************/ #define QOS_LOG_PFX(id) "mod_qos("#id"): " #define QOS_LOGD_PFX "mod_qos(): " #define QOS_HASH_LEN 16 #define QOS_MAX_AGE "3600" #define QOS_COOKIE_NAME "MODQOS" #define QOS_USER_TRACKING "mod_qos_user_id" #define QOS_USER_TRACKING_NEW "QOS_USER_ID_NEW" #define QOS_DISABLE_UTC_ENFORCEMENT "DISABLE_UTC_ENFORCEMENT" #define QOS_MILESTONE "mod_qos_milestone" #define QOS_MILESTONE_TIMEOUT 3600 #define QOS_MILESTONE_COOKIE "QSSCD" #define QS_SIM_IP_LEN 100 #define QS_USR_SPE "mod_qos::user" #define QS_REC_COOKIE "mod_qos::gc" #define QS_R010_ALREADY_BLOCKED "R010B" #define QS_R012_ALREADY_BLOCKED "R012B" #define QS_R013_ALREADY_BLOCKED "R013B" #define QS_PKT_RATE_TH 3 #define QS_BW_SAMPLING_RATE 10 // split linear QS_SrvMaxConnPerIP* entry (conn->conn_ip) search: #define QS_MEM_SEG 1 #ifndef QSLOG_CLID #define QSLOG_CLID "mod_qos_user_id" #endif #ifndef QSLOG_EVENT #define QSLOG_EVENT "Event" #endif #ifndef QSLOG_AVERAGE #define QSLOG_AVERAGE "QS_AllConn" #endif #ifndef QS_LOG_REPEAT #define QS_LOG_REPEAT 20 #endif #define QS_IP4IN6 "::ffff:" #define QS_PARP_Q "qos-parp-query" #define QS_PARP_QUERY "qos-query" #define QS_PARP_PATH "qos-path" #define QS_PARP_LOC "qos-loc" #define QSLOGFORMAT "ISBiDUkEQaC" #define QS_SET_DSCP "QS_Set_DSCP" #define QS_RESDELYATIME "QS_ResponseDelayTime" #define QS_CONNID "QS_ConnectionId" #define QS_COUNTRY "QS_Country" #define QS_SERIALIZE "QS_Serialize" #define QS_SRVSERIALIZE "QS_SrvSerialize" #define QS_ErrorNotes "QS_ErrorNotes" #define QS_BLOCK "QS_Block" #define QS_BLOCK_SEEN "QS_Block_seen" #define QS_LIMIT_NAME_PFX "QS_Limit_VAR_NAME_IDX" #define QS_LIMIT_DEFAULT "QS_Limit" #define QS_LIMIT_SEEN "QS_Limit_seen" #define QS_COUNTER_SUFFIX "_Counter" #define QS_LIMIT_CLEAR "_Clear" #define QS_LIMIT_REMAINING "_Remaining" #define QS_EVENT "QS_Event" #define QS_COND "QS_Cond" #define QS_ISVIPREQ "QS_IsVipRequest" #define QS_VipRequest "QS_VipRequest" #define QS_KEEPALIVE "QS_KeepAliveTimeout" #define QS_MAXKEEPALIVEREQ "QS_MaxKeepAliveRequests" #define QS_TIMEOUT "QS_Timeout" #define QS_CLOSE "QS_SrvMinDataRate" #define QS_MAXIP "QS_SrvMaxConnPerIP" #define QS_EMPTY_CON "NullConnection" #define QS_BROKEN_CON "BrokenConnection" #define QS_RuleId "QS_RuleId" #define QS_MFILE "/var/tmp/" // enable connection counter if one of the following feature is used #define QS_COUNT_CONNECTIONS(sconf) (sconf->max_conn != -1) || \ (sconf->min_rate_max != -1) || \ (sconf->max_conn_close != -1) || \ (sconf->max_conn_per_ip_connections != 1) || \ sconf->geodb // "3758096128","3758096383","AU" #define QS_GEO_PATTERN "\"([0-9]+)\",\"([0-9]+)\",\"([A-Z0-9]{2}|-)\"" static const char *m_env_variables[] = { QS_ErrorNotes, QS_SERIALIZE, QS_SRVSERIALIZE, QS_BLOCK, QS_BLOCK_SEEN, QS_LIMIT_DEFAULT, QS_LIMIT_SEEN, QS_EVENT, QS_COND, QS_ISVIPREQ, QS_VipRequest, QS_KEEPALIVE, QS_MAXKEEPALIVEREQ, QS_CLOSE, QS_EMPTY_CON, QS_BROKEN_CON, QS_RuleId, NULL }; static const char *m_note_variables[] = { QS_PARP_PATH, QS_PARP_QUERY, NULL }; #define QS_INCTX_ID inctx->id /* This is the measure rate for QS_SrvRequestRate/QS_SrvMinDataRate which may be increased to 10 or 30 seconds in order to compensate bandwidth variations. You may also use the QS_SrvSampleRate directive to override this default. Set it greater than the Apache Timeout directive to prevent from closing unused speculative TCP pre-connections. */ #ifndef QS_REQ_RATE_TM #define QS_REQ_RATE_TM 5 #endif #ifndef QS_EXTRA_MATCH_LIMIT #define QS_EXTRA_MATCH_LIMIT 1500 #endif #define QS_MAX_DELAY 5000000 #define QOS_DEC_MODE_FLAGS_URL 0x00 #define QOS_DEC_MODE_FLAGS_HTML 0x01 #define QOS_DEC_MODE_FLAGS_UNI 0x02 #define QOS_DEC_MODE_FLAGS_ANSI 0x04 #define QOS_LOW_FLAG_PKGRATE 0x01 #define QOS_LOW_FLAG_BEHAVIOR_OK 0x02 #define QOS_LOW_FLAG_BEHAVIOR_BAD 0x04 #define QOS_LOW_FLAG_EVENTBLOCK 0x08 #define QOS_LOW_FLAG_EVENTLIMIT 0x10 #define QOS_LOW_FLAG_TIMEOUT 0x20 #define QOS_LOW_TIMEOUT 86400 #define QOS_CC_BEHAVIOR_THR 50000 #define QOS_CC_BEHAVIOR_THR_SINGLE 50 #ifdef QS_INTERNAL_TEST #undef QOS_CC_BEHAVIOR_THR #undef QOS_CC_BEHAVIOR_THR_SINGLE #define QOS_CC_BEHAVIOR_THR 50 #define QOS_CC_BEHAVIOR_THR_SINGLE 20 #endif #define QOS_CC_BEHAVIOR_TOLERANCE_STR "20" #define QS_ERR_TIME_FORMAT "%a %b %d %H:%M:%S %Y" #define QSMOD 4 #define QOS_DELIM ";" // Apache 2.4 compat (experimental) #if (AP_SERVER_MINORVERSION_NUMBER == 4) #define QS_APACHE_24 1 #define QS_CONN_REMOTEIP(c) c->client_ip #define QS_CONN_REMOTEADDR(c) c->client_addr #define QOS_MY_GENERATION(g) ap_mpm_query(AP_MPMQ_GENERATION, &g) #define qos_unixd_set_global_mutex_perms ap_unixd_set_global_mutex_perms #define QS_ISDEBUG(s) APLOG_IS_LEVEL(s, APLOG_DEBUG) #else #define QS_APACHE_22 1 #define QS_CONN_REMOTEIP(c) c->remote_ip #define QS_CONN_REMOTEADDR(c) c->remote_addr #define QOS_MY_GENERATION(g) g = ap_my_generation #define qos_unixd_set_global_mutex_perms unixd_set_global_mutex_perms #define QS_ISDEBUG(s) s->loglevel >= APLOG_DEBUG #endif #ifdef QS_MOD_EXT_HOOKS APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(qos, QOS, apr_status_t, path_decode_hook, (request_rec *r, char **path, int *len), (r, path, len), OK, DECLINED) APR_IMPLEMENT_OPTIONAL_HOOK_RUN_ALL(qos, QOS, apr_status_t, query_decode_hook, (request_rec *r, char **query, int *len), (r, query, len), OK, DECLINED) #endif /************************************************************************ * structures ***********************************************************************/ typedef struct { const char *name; /* variable name */ #ifdef AP_REGEX_H ap_regex_t *preg; #else regex_t *preg; #endif const char *url; /* redirect url */ int code; } qos_redirectif_entry_t; typedef struct { unsigned long start; unsigned long end; char country[3]; } qos_geo_t; typedef struct { const char *url; const char *path; } qos_errelt_t; static const qos_errelt_t m_error_pages[] = { { "/errorpages/server_error.html", "work/errorpages/server_error.html" }, { "/errorpages/forbidden.html", "work/errorpages/forbidden.html" }, { "/errorpages/500.html", "work/errorpages/500.html" }, { "/errorpages/error.html", "work/errorpages/error.html" }, { "/errorpages/error500.html", "work/errorpages/error500.html" }, { "/errorpages/gateway_error.html", "work/errorpages/gateway_error.html" }, { NULL, NULL } }; typedef struct { int id; const char *name; } qos_dscp_t; static const qos_dscp_t m_dscp_desc[] = { { 0, "none" }, { 8, "class selector 1" }, { 10, "assured forwarding 11" }, { 12, "assured forwarding 12" }, { 14, "assured forwarding 13" }, { 16, "class selector 2" }, { 18, "assured forwarding 21" }, { 20, "assured forwarding 22" }, { 22, "assured forwarding 23" }, { 24, "class selector 3" }, { 26, "assured forwarding 31" }, { 28, "assured forwarding 32" }, { 30, "assured forwarding 33" }, { 32, "class selector 4" }, { 34, "assured forwarding 41" }, { 36, "assured forwarding 42" }, { 38, "assured forwarding 43" }, { 40, "class selector 5" }, { 44, "voice admit" }, { 46, "expedited forwarding" }, { 48, "class selector 6" }, { 56, "class selector 7" }, { -1, "unknown" } }; typedef struct { short int limit; time_t limit_time; } qos_s_entry_limit_t; typedef struct { short int limit; time_t limit_time; const char *eventClearStr; // name of the var clearing the counter const char *condStr; #ifdef AP_REGEX_H ap_regex_t *preg; #else regex_t *preg; #endif } qos_s_entry_limit_conf_t; typedef struct { apr_uint64_t ip6[2]; time_t lowrate; unsigned int lowratestatus; /* behavior */ unsigned int html; unsigned int cssjs; unsigned int img; unsigned int other; unsigned int notmodified; unsigned int events; /* serialization flag */ unsigned int serialize; apr_time_t serialize_queue; /* prefer */ short int vip; /* ev block */ short int block; short int blockMsg; time_t time; time_t block_time; qos_s_entry_limit_t *limit; /* ev/sec */ time_t interval; long req; long req_per_sec; int req_per_sec_block_rate; int event_req; } qos_s_entry_t; typedef struct { time_t t; /* index */ qos_s_entry_t **ipd; qos_s_entry_t **timed; /* shm */ apr_shm_t *m; char *lock_file; apr_global_mutex_t *lock; /* size */ int num; int max; int msize; /* limit table settings */ apr_table_t *limitTable; /* av. behavior */ unsigned long long html; unsigned long long cssjs; unsigned long long img; unsigned long long other; unsigned long long notmodified; /* data */ int connections; /* remember for which clients this rec has created (shared mem) */ int generation_locked; // indicates the the counters have been cleared for this generation } qos_s_t; typedef enum { QS_IP_V6_DEFAULT = 0, QS_IP_V6, QS_IP_V4 } qs_ip_type_e; typedef enum { QS_CONN_STATE_NEW = 0, QS_CONN_STATE_HEAD, QS_CONN_STATE_BODY, QS_CONN_STATE_CHUNKED, QS_CONN_STATE_KEEP, QS_CONN_STATE_RESPONSE, QS_CONN_STATE_END, QS_CONN_STATE_DESTROY } qs_conn_state_e; typedef enum { QS_HEADERFILTER_OFF_DEFAULT = 0, QS_HEADERFILTER_OFF, QS_HEADERFILTER_ON, QS_HEADERFILTER_SIZE_ONLY, QS_HEADERFILTER_SILENT } qs_headerfilter_mode_e; typedef enum { QS_FLT_ACTION_DROP, QS_FLT_ACTION_DENY } qs_flt_action_e; typedef enum { QS_EVENT_ACTION_DENY = 0 } qs_event_action_e; typedef enum { QS_DENY_REQUEST_LINE, QS_DENY_PATH, QS_DENY_QUERY, QS_DENY_EVENT, QS_PERMIT_URI } qs_rfilter_type_e; typedef enum { QS_LOG = 0, QS_DENY, QS_OFF_DEFAULT, QS_OFF } qs_rfilter_action_e; typedef struct { char *variable1; char *variable2; #ifdef AP_REGEX_H ap_regex_t *preg; #else regex_t *preg; #endif char *name; char *value; } qos_setenvif_t; typedef struct { #ifdef AP_REGEX_H ap_regex_t *preg; #else regex_t *preg; #endif char *name; char *value; } qos_setenvifquery_t; typedef struct { pcre *preg; pcre_extra *extra; #ifdef AP_REGEX_H ap_regex_t *pregx; #else regex_t *pregx; #endif char *name; char *value; } qos_setenvifparpbody_t; /** * generic request filter */ typedef struct { pcre *pr; pcre_extra *extra; char *text; char *id; qs_rfilter_type_e type; qs_rfilter_action_e action; } qos_rfilter_t; /** * list of in_filter ctx */ typedef struct { apr_table_t *table; #if APR_HAS_THREADS apr_thread_mutex_t *lock; apr_thread_t *thread; #endif int exit; } qos_ifctx_list_t; /** * ip entry */ typedef struct qs_ip_entry_st { apr_uint64_t ip6[2]; int counter; int error; } qs_ip_entry_t; typedef struct { qs_ip_entry_t *conn_ip; int conn_ip_len; int connections; } qs_conn_t; typedef struct { apr_time_t q1; // first request in queue apr_time_t q2; // second request in queue int locked; } qs_serial_t; /** * session cookie */ typedef struct { time_t time; } qos_session_t; /** * cfg/act entry for event limitation */ typedef struct { const char *env_var;// configured environment variable name int max; // configured max. num int seconds; // configured duration int limit; // event counter time_t limit_time; // timer qs_event_action_e action; } qos_event_limit_entry_t; /** * access control table entry */ typedef struct qs_acentry_st { int id; /** pointer to lock of the actable */ apr_global_mutex_t *lock; /** location rules */ char *url; int url_len; char *event; #ifdef AP_REGEX_H ap_regex_t *regex; ap_regex_t *regex_var; ap_regex_t *condition; #else regex_t *regex; regex_t *regex_var; regex_t *condition; #endif int counter; int limit; /* measurement */ apr_time_t interval; long req; long req_per_sec; long req_per_sec_limit; int req_per_sec_block_rate; long bytes; // transferred bytes apr_time_t kbytes_interval_us; // elapsed time apr_off_t kbytes_per_sec; // actual kbytes/sec (measured) apr_off_t kbytes_per_sec_limit; // configured limitation apr_off_t kbytes_per_sec_block_rate; // current wait time struct qs_acentry_st *next; } qs_acentry_t; /** * access control table (act) */ typedef struct qs_actable_st { apr_size_t size; apr_shm_t *m; apr_pool_t *pool; /** process pool is used to create user space data */ apr_pool_t *ppool; /** rule entry list */ qs_acentry_t *entry; /* shm pointer */ int has_events; /** event limit list */ qos_event_limit_entry_t *event_entry; /** mutex */ char *lock_file; apr_global_mutex_t *lock; /** ip/conn data */ qs_conn_t *conn; /* shm pointer */ unsigned int timeout; /* settings */ int child_init; /* serialize */ qs_serial_t *serialize; /* shm pointer */ time_t *qsstatustimer; /* shm pointer */ } qs_actable_t; /** * network table (total connections, vip connections, first update, last update) */ typedef struct qs_netstat_st { // int counter; int vip; // time_t first; // time_t last; } qs_netstat_t; /** * user space */ typedef struct { int server_start; apr_table_t *act_table; /* client control */ qos_s_t *qos_cc; } qos_user_t; /** * directory config */ typedef struct { char *path; apr_table_t *rfilter_table; int inheritoff; qs_headerfilter_mode_e headerfilter; qs_headerfilter_mode_e resheaderfilter; int bodyfilter_d; int bodyfilter_p; int dec_mode; apr_off_t maxpost; qs_rfilter_action_e urldecoding; const char *response_pattern; int response_pattern_len; const char *response_pattern_var; apr_array_header_t *redirectif; int decodings; apr_table_t *disable_reqrate_events; apr_table_t *setenvstatus_t; } qos_dir_config; /** * server configuration */ typedef struct { apr_pool_t *pool; int is_virtual; server_rec *base_server; const char *chroot; char *mfile; qs_actable_t *act; const char *error_page; apr_table_t *location_t; apr_table_t *setenv_t; apr_table_t *setreqheader_t; apr_table_t *setreqheaderlate_t; apr_table_t *unsetresheader_t; apr_table_t *setenvif_t; apr_table_t *setenvifquery_t; apr_table_t *setenvifparp_t; apr_table_t *setenvifparpbody_t; apr_table_t *setenvstatus_t; apr_table_t *setenvresheader_t; apr_table_t *setenvresheadermatch_t; apr_table_t *setenvres_t; qs_headerfilter_mode_e headerfilter; qs_headerfilter_mode_e resheaderfilter; apr_array_header_t *redirectif; char *cookie_name; char *cookie_path; char *user_tracking_cookie; char *user_tracking_cookie_force; int user_tracking_cookie_session; char *user_tracking_cookie_domain; int max_age; unsigned char key[EVP_MAX_KEY_LENGTH]; const unsigned char *rawKey; int rawKeyLen; int keyset; char *header_name; int header_name_drop; #ifdef AP_REGEX_H ap_regex_t *header_name_regex; #else regex_t *header_name_regex; #endif apr_table_t *disable_reqrate_events; char *ip_header_name; int ip_header_name_drop; #ifdef AP_REGEX_H ap_regex_t *ip_header_name_regex; #else regex_t *ip_header_name_regex; #endif int vip_user; int vip_ip_user; int has_conn_counter; int max_conn; int max_conn_close; int max_conn_close_percent; int max_conn_per_ip; int max_conn_per_ip_connections; int serialize; int serializeTMO; apr_table_t *exclude_ip; qos_ifctx_list_t *inctx_t; apr_table_t *hfilter_table; /* GLOBAL ONLY */ apr_table_t *reshfilter_table; /* GLOBAL ONLY */ /* event rule (enables rule validation) */ int has_event_filter; int has_event_limit; apr_array_header_t *event_limit_a; /* min data rate */ int req_rate; /* GLOBAL ONLY */ int req_rate_start; /* GLOBAL ONLY */ int min_rate; /* GLOBAL ONLY */ int min_rate_max; /* GLOBAL ONLY */ int min_rate_off; int max_clients; #ifdef QS_INTERNAL_TEST apr_table_t *testip; int enable_testip; #endif int disable_handler; /* client control */ int log_only; /* GLOBAL ONLY */ int has_qos_cc; /* GLOBAL ONLY */ int qos_cc_size; /* GLOBAL ONLY */ int qos_cc_prefer; /* GLOBAL ONLY */ apr_table_t *cc_exclude_ip; /* GLOBAL ONLY */ int qos_cc_prefer_limit; int qos_cc_event; /* GLOBAL ONLY */ int qos_cc_event_req; /* GLOBAL ONLY */ int qos_cc_block; /* GLOBAL ONLY */ int qos_cc_block_time; /* GLOBAL ONLY */ apr_table_t *qos_cc_limitTable; /* GLOBAL ONLY */ char *qos_cc_forwardedfor; /* GLOBAL ONLY */ int qos_cc_serialize; /* GLOBAL ONLY */ apr_off_t maxpost; int cc_tolerance; /* GLOBAL ONLY */ int cc_tolerance_max; /* GLOBAL ONLY */ int cc_tolerance_min; /* GLOBAL ONLY */ int qs_req_rate_tm; /* GLOBAL ONLY */ qos_geo_t *geodb; /* GLOBAL ONLY */ int geodb_size; /* GLOBAL ONLY */ int geo_limit; /* GLOBAL ONLY */ apr_table_t *geo_priv; /* GLOBAL ONLY */ qs_ip_type_e ip_type; /* GLOBAL ONLY */ int qsstatus; /* GLOBAL ONLY */ int server_limit; int thread_limit; apr_array_header_t *milestones; time_t milestone_timeout; /* predefined client behavior */ int static_on; unsigned long long static_html; unsigned long long static_cssjs; unsigned long long static_img; unsigned long long static_other; unsigned long long static_notmodified; apr_file_t *qslog_p; /* GLOBAL ONLY */ const char *qslog_str; /* GLOBAL ONLY */ } qos_srv_config; #if APR_HAS_THREADS typedef struct { apr_thread_t *thread; int exit; int maxclients; time_t *qsstatustimer; /* shm in act */ apr_global_mutex_t *lock; /* lock of act */ apr_pool_t *pool; } qsstatus_t; #endif /** * in_filter ctx */ typedef struct { apr_socket_t *client_socket; qs_conn_state_e status; apr_off_t cl_val; conn_rec *c; request_rec *r; /* upload bandwidth (received bytes and start time) */ time_t time; apr_size_t nbytes; // measuring the bytes/sec int shutdown; int errors; int disabled; int lowrate; char *id; qos_srv_config *sconf; } qos_ifctx_t; /** * connection configuration */ typedef struct { apr_uint64_t ip6[2]; conn_rec *c; char *evmsg; qos_srv_config *sconf; int is_vip; /* is vip, either by request or by session or by ip */ int set_vip_by_header; /* received vip header from application/or auth. user (propagate to IP store)*/ int has_lowrate; qs_conn_t *conn; } qs_conn_ctx; typedef struct { qs_conn_ctx *cconf; conn_rec *c; qos_srv_config *sconf; int requests; // number of requests processed (received) by this connection apr_socket_t *client_socket; } qs_conn_base_ctx; /** * request configuration */ typedef struct { qs_acentry_t *entry; qs_acentry_t *entry_cond; apr_table_t *event_entries; char *evmsg; int is_vip; apr_off_t maxpostcount; int cc_event_req_set; int cc_serialize_set; int srv_serialize_set; char *body_window; apr_off_t response_delayed; // indicates, if the response has been delayed (T) } qs_req_ctx; /** * Delay filter context */ typedef struct { qs_acentry_t *entry; qs_req_ctx *rctx; } qos_delay_ctx_t; /** * rule set */ typedef struct { char *url; char *event; int limit; #ifdef AP_REGEX_H /* apache 2.2 */ ap_regex_t *regex; ap_regex_t *regex_var; ap_regex_t *condition; #else /* apache 2.0 */ regex_t *regex; regex_t *regex_var; regex_t *condition; #endif long req_per_sec_limit; apr_off_t kbytes_per_sec_limit; } qs_rule_ctx_t; typedef struct { const char* name; const char* pcre; qs_flt_action_e action; int size; } qos_her_t; typedef struct { #ifdef AP_REGEX_H ap_regex_t *preg; #else regex_t *preg; #endif char *name; char *value; } qos_pregval_t; typedef struct { int num; int thinktime; const char* pattern; pcre *preg; pcre_extra *extra; qs_rfilter_action_e action; } qos_milestone_t; typedef struct { char *text; pcre *pcre; pcre_extra *extra; qs_flt_action_e action; int size; } qos_fhlt_r_t; typedef struct { apr_time_t request_time; unsigned int in_addr; unsigned int conn; unsigned int pid; unsigned int tid; unsigned int unique_id_counter; } qos_unique_id_t; /************************************************************************ * globals ***********************************************************************/ module AP_MODULE_DECLARE_DATA qos_module; static int m_retcode = HTTP_INTERNAL_SERVER_ERROR; static int m_worker_mpm = 1; // note: mod_qos is fully tested for Apache 2.2 worker MPM only static int m_event_mpm = 0; static unsigned int m_hostcode = 0; static int m_generation = 0; // parent process (restart generation) static int m_qos_cc_partition = QSMOD; static qos_unique_id_t m_unique_id; static const char qos_basis_64[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_-"; /* mod_parp, forward and optional function */ static apr_status_t qos_cleanup_conn(void *p); static apr_status_t qos_base_cleanup_conn(void *p); static qs_ip_type_e m_ip_type = QS_IP_V6_DEFAULT; APR_DECLARE_OPTIONAL_FN(apr_table_t *, parp_hp_table, (request_rec *)); APR_DECLARE_OPTIONAL_FN(char *, parp_body_data, (request_rec *, apr_size_t *)); static APR_OPTIONAL_FN_TYPE(parp_hp_table) *qos_parp_hp_table_fn = NULL; static APR_OPTIONAL_FN_TYPE(parp_body_data) *qos_parp_body_data_fn = NULL; static int m_requires_parp = 0; static int m_enable_audit = 0; /* mod_ssl, forward and optional function */ APR_DECLARE_OPTIONAL_FN(int, ssl_is_https, (conn_rec *)); static APR_OPTIONAL_FN_TYPE(ssl_is_https) *qos_is_https = NULL; /* simple header rules allowing "the usual" header formats only (even drop requests using extensions which are used rarely) */ /* reserved (to be escaped): {}[]()^$.|*+?\ */ static const qos_her_t qs_header_rules[] = { #define QS_URL_UNRESERVED "a-zA-Z0-9\\._~% \\-" #define QS_URL_GEN ":/\\?#\\[\\]@" #define QS_URL_SUB "!\\$&'\\(\\)\\*\\+,;=" #define QS_URL "["QS_URL_GEN""QS_URL_SUB""QS_URL_UNRESERVED"]" #define QS_2616TOKEN "[\\x21\\x23-\\x27\\x2a-\\x2e0-9A-Z\\x5-\\x60a-z\\x7e]+" #define QS_B64_SP "[a-zA-Z0-9 \\+/\\$=:]" #define QS_PIPE "\\|" #define QS_WEAK "(W/)?" #define QS_H_ACCEPT "[a-zA-Z0-9_\\*\\+\\-]+/[a-zA-Z0-9_\\*\\+\\.\\-]+(;[ ]?[a-zA-Z0-9]+=[0-9]+)?[ ]?(;[ ]?q=[0-9\\.]+)?" #define QS_H_ACCEPT_C "[a-zA-Z0-9\\*\\-]+(;[ ]?q=[0-9\\.]+)?" #define QS_H_ACCEPT_E "[a-zA-Z0-9\\*\\-]+(;[ ]?q=[0-9\\.]+)?" #define QS_H_ACCEPT_L "[a-zA-Z\\*\\-]+[0-9]{0,3}(;[ ]?q=[0-9\\.]+)?" #define QS_H_CACHE "no-cache|no-store|max-age=[0-9]+|max-stale(=[0-9]+)?|min-fresh=[0-9]+|no-transform|only-if-chached" #define QS_H_CONTENT "[\"a-zA-Z0-9\\*/; =\\-]+" #define QS_H_COOKIE "["QS_URL_GEN""QS_URL_SUB"\""QS_URL_UNRESERVED"]" #define QS_H_EXPECT "[a-zA-Z0-9= ;\\.,\\-]" #define QS_H_PRAGMA "[a-zA-Z0-9= ;\\.,\\-]" #define QS_H_FROM "[a-zA-Z0-9=@;\\.,\\(\\)\\-]" #define QS_H_HOST "[a-zA-Z0-9\\.\\-]+(:[0-9]+)?" #define QS_H_IFMATCH "[a-zA-Z0-9=@;\\.,\\*\"\\-]" #define QS_H_DATE "[a-zA-Z0-9 :,]" #define QS_H_TE "[a-zA-Z0-9\\*\\-]+(;[ ]?q=[0-9\\.]+)?" { "Accept", "^("QS_H_ACCEPT"){1}([ ]?,[ ]?"QS_H_ACCEPT")*$", QS_FLT_ACTION_DROP, 300 }, { "Accept-Charset", "^("QS_H_ACCEPT_C"){1}([ ]?,[ ]?"QS_H_ACCEPT_C")*$", QS_FLT_ACTION_DROP, 300 }, { "Accept-Encoding", "^("QS_H_ACCEPT_E"){1}([ ]?,[ ]?"QS_H_ACCEPT_E")*$", QS_FLT_ACTION_DROP, 500 }, { "Accept-Language", "^("QS_H_ACCEPT_L"){1}([ ]?,[ ]?"QS_H_ACCEPT_L")*$", QS_FLT_ACTION_DROP, 200 }, { "Authorization", "^"QS_B64_SP"+$", QS_FLT_ACTION_DROP, 4000 }, { "Cache-Control", "^("QS_H_CACHE"){1}([ ]?,[ ]?"QS_H_CACHE")*$", QS_FLT_ACTION_DROP, 100 }, { "Connection", "^([teTE]+,[ ]?)?([a-zA-Z0-9\\-]+){1}([ ]?,[ ]?[teTE]+)?$", QS_FLT_ACTION_DROP, 100 }, { "Content-Encoding", "^[a-zA-Z0-9\\-]+(,[ ]*[a-zA-Z0-9\\-]+)*$", QS_FLT_ACTION_DENY, 100 }, { "Content-Language", "^([0-9a-zA-Z]{0,8}(-[0-9a-zA-Z]{0,8})*)(,[ ]*([0-9a-zA-Z]{0,8}(-[0-9a-zA-Z]{0,8})*))*$", QS_FLT_ACTION_DROP, 100 }, { "Content-Length", "^[0-9]+$", QS_FLT_ACTION_DENY, 10 }, { "Content-Location", "^"QS_URL"+$", QS_FLT_ACTION_DENY, 200 }, { "Content-md5", "^"QS_B64_SP"+$", QS_FLT_ACTION_DENY, 50 }, { "Content-Range", "^(bytes[ ]+([0-9]+-[0-9]+)/([0-9]+|\\*))$", QS_FLT_ACTION_DENY, 50 }, { "Content-Type", "^("QS_H_CONTENT"){1}([ ]?,[ ]?"QS_H_CONTENT")*$", QS_FLT_ACTION_DENY, 200 }, { "Cookie", "^"QS_H_COOKIE"+$", QS_FLT_ACTION_DROP, 3000 }, { "Cookie2", "^"QS_H_COOKIE"+$", QS_FLT_ACTION_DROP, 3000 }, { "DNT", "^[0-9]+$", QS_FLT_ACTION_DROP, 3 }, { "Expect", "^"QS_H_EXPECT"+$", QS_FLT_ACTION_DROP, 200 }, { "From", "^"QS_H_FROM"+$", QS_FLT_ACTION_DROP, 100 }, { "Host", "^"QS_H_HOST"$", QS_FLT_ACTION_DROP, 100 }, { "If-Invalid", "^[a-zA-Z0-9_\\.:;\\(\\) /\\+!\\-]+$", QS_FLT_ACTION_DROP, 500 }, { "If-Match", "^"QS_WEAK""QS_H_IFMATCH"+$", QS_FLT_ACTION_DROP, 100 }, { "If-Modified-Since", "^"QS_H_DATE"+$", QS_FLT_ACTION_DROP, 100 }, { "If-None-Match", "^"QS_WEAK""QS_H_IFMATCH"+$", QS_FLT_ACTION_DROP, 100 }, { "If-Range", "^"QS_H_IFMATCH"+$", QS_FLT_ACTION_DROP, 100 }, { "If-Unmodified-Since", "^"QS_H_DATE"+$", QS_FLT_ACTION_DROP, 100 }, { "If-Valid", "^[a-zA-Z0-9_\\.:;\\(\\) /\\+!\\-]+$", QS_FLT_ACTION_DROP, 500 }, { "Keep-Alive", "^[0-9]+$", QS_FLT_ACTION_DROP, 20 }, { "Max-Forwards", "^[0-9]+$", QS_FLT_ACTION_DROP, 20 }, { "Origin", "^"QS_URL"+$", QS_FLT_ACTION_DROP, 2000 }, { "Proxy-Authorization", "^"QS_B64_SP"+$", QS_FLT_ACTION_DROP, 400 }, { "Pragma", "^"QS_H_PRAGMA"+$", QS_FLT_ACTION_DROP, 200 }, { "Range", "^[a-zA-Z0-9=_\\.:;\\(\\) /\\+!\\-]+$", QS_FLT_ACTION_DROP, 200 }, { "Referer", "^"QS_URL"+$", QS_FLT_ACTION_DROP, 2000 }, { "TE", "^("QS_H_TE"){1}([ ]?,[ ]?"QS_H_TE")*$", QS_FLT_ACTION_DROP, 100 }, { "Transfer-Encoding", "^chunked|Chunked|compress|Compress|deflate|Deflate|gzip|Gzip|identity|Identity$", QS_FLT_ACTION_DENY, 100 }, { "Unless-Modified-Since", "^"QS_H_DATE"+$", QS_FLT_ACTION_DROP, 100 }, { "User-Agent", "^[a-zA-Z0-9]+[a-zA-Z0-9_.:;()\\[\\]@ /+!=,-]+$", QS_FLT_ACTION_DROP, 300 }, { "Upgrade-Insecure-Requests", "^1$", QS_FLT_ACTION_DROP, 1 }, { "Via", "^[a-zA-Z0-9_\\.:;\\(\\) /\\+!\\-]+$", QS_FLT_ACTION_DROP, 100 }, { "X-Forwarded-For", "^[a-zA-Z0-9_\\.:\\-]+(, [a-zA-Z0-9_\\.:\\-]+)*$", QS_FLT_ACTION_DROP, 100 }, { "X-Forwarded-Host", "^[a-zA-Z0-9_\\.:\\-]+$", QS_FLT_ACTION_DROP, 100 }, { "X-Forwarded-Server", "^[a-zA-Z0-9_\\.:\\-]+$", QS_FLT_ACTION_DROP, 100 }, { "X-lori-time-1", "^[0-9]+$", QS_FLT_ACTION_DROP, 20 }, { "X-Do-Not-Track", "^[0-9]+$", QS_FLT_ACTION_DROP, 20 }, { NULL, NULL, 0, 0 } }; /* list of allowed standard response headers */ static const qos_her_t qs_res_header_rules[] = { { "Age", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Accept-Ranges", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Access-Control-Allow-Origin", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Allow", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Cache-Control", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Disposition", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Encoding", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Language", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Length", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Location", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-MD5", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Range", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Content-Security-Policy", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 8000 }, { "Content-Type", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Connection", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Date", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "ETag", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Expect", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Expires", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Keep-Alive", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Last-Modified", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Location", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Proxy-Authenticate", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Public-Key-Pins", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Public-Key-Pins-Report-Only", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Retry-After", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Pragma", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Server", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Set-Cookie", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Set-Cookie2", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Strict-Transport-Security", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "Vary", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "WWW-Authenticate", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "X-Content-Security-Policy", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 8000 }, { "X-Content-Type-Options", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "X-Frame-Options", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { "X-XSS-Protection", "^[\\x20-\\xFF]*$", QS_FLT_ACTION_DROP, 4000 }, { NULL, NULL, 0, 0 } }; /************************************************************************ * private functions ***********************************************************************/ /** * Converts an ip long array back to a string representation * * @param pool * @param src Array of two unsigned long * @return String or null for an invalid address */ static char *qos_ip_long2str(apr_pool_t *pool, const void *src) { char *dst = apr_pcalloc(pool, INET6_ADDRSTRLEN); char *ret = (char *)inet_ntop(AF_INET6, src, dst, INET6_ADDRSTRLEN); if(ret) { if((strncmp(ret, QS_IP4IN6, 7) == 0) && strchr(ret, '.')) { ret = &ret[7]; } } return ret; } /** * Converts an ip string to long array (128 bit) representation * * @param src String representation, e.g. 139.12.33.1 or 1::8 * @param dst Pointer to array of unsigned long (2) (contains "{ 0, 0 }" on errror) * @return 1 on success, 0 on error */ static int qos_ip_str2long(const char *src, void *dst) { char str[INET6_ADDRSTRLEN]; const char *convert = src; apr_uint64_t *n = dst; n[0] = 0; n[1] = 0; if(convert == NULL) { return 0; } if((strchr(convert, ':') == NULL) && (strlen(convert) <= 15)) { // looks like an IPv4 address sprintf(str, QS_IP4IN6"%s", src); convert = str; } return inet_pton(AF_INET6, convert, dst); } /** * Studies pcre pattern (for perfomance improvement) and sets match limits. * @param pool Pool to allocate structure from (or to register cleanup) * @param pc Pattern to study * @return extra data */ static pcre_extra *qos_pcre_study(apr_pool_t *pool, pcre *pc) { pcre_extra *extra = NULL; #ifdef QOS_EXTRA_USE_PCRE_STUDY const char *errptr = NULL; extra = pcre_study(pc, 0, &errptr); #endif if(extra != NULL) { apr_pool_cleanup_register(pool, extra, (int(*)(void*))pcre_free, apr_pool_cleanup_null); } else { extra = apr_pcalloc(pool, sizeof(pcre_extra)); } #ifdef PCRE_EXTRA_MATCH_LIMIT extra->match_limit = QS_EXTRA_MATCH_LIMIT; extra->flags |= PCRE_EXTRA_MATCH_LIMIT; #endif #ifdef PCRE_EXTRA_MATCH_LIMIT_RECURSION extra->match_limit_recursion = QS_EXTRA_MATCH_LIMIT; extra->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION; #endif #ifdef PCRE_EXTRA_MATCH_LIMIT_RECURSION extra->match_limit_recursion = QS_EXTRA_MATCH_LIMIT; extra->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION; #endif return extra; } static int qos_encode64_binary(char *encoded, const char *string, int len) { int i; char *p; p = encoded; for (i = 0; i < len - 2; i += 3) { *p++ = qos_basis_64[(string[i] >> 2) & 0x3F]; *p++ = qos_basis_64[((string[i] & 0x3) << 4) | ((int) (string[i + 1] & 0xF0) >> 4)]; *p++ = qos_basis_64[((string[i + 1] & 0xF) << 2) | ((int) (string[i + 2] & 0xC0) >> 6)]; *p++ = qos_basis_64[string[i + 2] & 0x3F]; } if (i < len) { *p++ = qos_basis_64[(string[i] >> 2) & 0x3F]; if (i == (len - 1)) { *p++ = qos_basis_64[((string[i] & 0x3) << 4)]; *p++ = '='; } else { *p++ = qos_basis_64[((string[i] & 0x3) << 4) | ((int) (string[i + 1] & 0xF0) >> 4)]; *p++ = qos_basis_64[((string[i + 1] & 0xF) << 2)]; } *p++ = '='; } *p++ = '\0'; return (int)(p - encoded); } /** * loads the default header rules into the server configuration (see rules * above). * @param pool To allocate memory * @param hfilter_table Table to add rules to * @param hs built-in header rules * @return error message (NULL on success) */ static char *qos_load_headerfilter(apr_pool_t *pool, apr_table_t *hfilter_table, const qos_her_t *hs) { const char *errptr = NULL; int erroffset; const qos_her_t* elt; for(elt = hs; elt->name != NULL ; ++elt) { qos_fhlt_r_t *he = apr_pcalloc(pool, sizeof(qos_fhlt_r_t)); he->text = apr_pstrdup(pool, elt->pcre); he->pcre = pcre_compile(elt->pcre, PCRE_DOTALL, &errptr, &erroffset, NULL); he->action = elt->action; he->size = elt->size; if(he->pcre == NULL) { return apr_psprintf(pool, "could not compile pcre %s at position %d," " reason: %s", elt->name, erroffset, errptr); } he->extra = qos_pcre_study(pool, he->pcre); apr_table_setn(hfilter_table, elt->name, (char *)he); apr_pool_cleanup_register(pool, he->pcre, (int(*)(void*))pcre_free, apr_pool_cleanup_null); } return NULL; } /** * Returns string representation of filter type (for logging purposes) * @param pool To allocate string * @param type Rule type * @retrun Name of the directive used to configure the rule */ static char *qos_rfilter_type2text(apr_pool_t *pool, qs_rfilter_type_e type) { if(type == QS_DENY_REQUEST_LINE) return apr_pstrdup(pool, "QS_DenyRequestLine"); if(type == QS_DENY_PATH) return apr_pstrdup(pool, "QS_DenyPath"); if(type == QS_DENY_QUERY) return apr_pstrdup(pool, "QS_DenyQuery"); if(type == QS_DENY_EVENT) return apr_pstrdup(pool, "QS_DenyEvent"); if(type == QS_PERMIT_URI) return apr_pstrdup(pool, "QS_PermitUri"); return apr_pstrdup(pool, "UNKNOWN"); } /** * Sets unique apache instance id (hopefully) to the global m_hostcore variable * @param ptemp Pool to allocate memroy from * @param s Base server record */ static void qos_hostcode(apr_pool_t *ptemp, server_rec *s) { char *key = apr_psprintf(ptemp, "%s%s%s%d%s" #ifdef ap_http_scheme /* Apache 2.2 */ "%s" #endif "%s", s->defn_name ? s->defn_name : "", s->server_admin ? s->server_admin : "", s->server_hostname ? s->server_hostname : "", s->addrs ? s->addrs->host_port : 0, s->path ? s->path : "", s->error_fname ? s->error_fname : "" #ifdef ap_http_scheme /* Apache 2.2 */ ,s->server_scheme ? s->server_scheme : "" #endif ); int len = strlen(key); int i; char *p; for(p = key, i = len; i; i--, p++) { m_hostcode = m_hostcode * 33 + *p; } } /** * temp file name for the main/virtual serve * @param pool Pool to allocate the file name from * @param s Server record * @return path */ static char *qos_tmpnam(apr_pool_t *pool, server_rec *s) { qos_srv_config *sconf = (qos_srv_config*)ap_get_module_config(s->module_config, &qos_module); char *path = QS_MFILE; char *id; char *e; if(sconf && sconf->mfile) { path = sconf->mfile; } if(s) { unsigned int scode = 0; char *key = apr_psprintf(pool, "%u%s.%s.%d", m_hostcode, s->is_virtual ? "v" : "b", s->server_hostname == NULL ? "-" : s->server_hostname, s->addrs == NULL ? 0 : s->addrs->host_port); int len = strlen(key); int i; char *p; for(p = key, i = len; i; i--, p++) { scode = scode * 33 + *p; } id = apr_psprintf(pool, "%s%u", path, scode); } else { id = apr_psprintf(pool, "%s%u", path, m_hostcode); } e = &id[strlen(path)]; e[0] += 25; /* non numeric */ return id; } /** * QS_LimitRequestBody settings. Environment variable (dynamic) has higher prio than * configuration (static) value. * @param r * @param sconf * @param dconf */ static apr_off_t qos_maxpost(request_rec *r, qos_srv_config *sconf, qos_dir_config *dconf) { if(r->subprocess_env) { const char *bytes = apr_table_get(r->subprocess_env, "QS_LimitRequestBody"); if(bytes) { apr_off_t s; #ifdef ap_http_scheme /* Apache 2.2 */ char *errp = NULL; if(APR_SUCCESS == apr_strtoff(&s, bytes, &errp, 10)) { return s; } #else if((s = apr_atoi64(bytes)) >= 0) { return s; } #endif } } if(dconf->maxpost != -1) { return dconf->maxpost; } return sconf->maxpost; } /** * Similar to strstr but restricting the length of s1 (supports strings which * are not NULL terminated). * * @param s1 String to search in * @param s2 Pattern to ind * @param len Length of s1 * @return pointer to the beginning of the substring s2 within s1, or NULL * if the substring is not found */ static char *qos_strnstr(const char *s1, const char *s2, int len) { const char *e1 = &s1[len-1]; char *p1, *p2; if (*s2 == '\0') { /* an empty s2 */ return((char *)s1); } while(1) { for ( ; (*s1 != '\0') && (s1 <= e1) && (apr_tolower(*s1) != apr_tolower(*s2)); s1++); if (*s1 == '\0' || s1 > e1) { return(NULL); } /* found first character of s2, see if the rest matches */ p1 = (char *)s1; p2 = (char *)s2; for (++p1, ++p2; (apr_tolower(*p1) == apr_tolower(*p2)) && (p1 <= e1); ++p1, ++p2) { if((p1 > e1) && (*p2 != '\0')) { // reached the end without match return NULL; } if (*p2 == '\0') { /* both strings ended together */ return((char *)s1); } } if (*p2 == '\0') { /* second string ended, a match */ break; } /* didn't find a match here, try starting at next character in s1 */ s1++; } return((char *)s1); } /** * Determines, if the client IP shall be excluded from rule enforcement * * @param c Connection to get the IP * @param exclude_ip Table containing the rules * @return 1 on match otherwise 0 */ static int qos_is_excluded_ip(conn_rec *c, apr_table_t *exclude_ip) { if(apr_table_elts(exclude_ip)->nelts > 0) { int i; apr_table_entry_t *entry = (apr_table_entry_t *)apr_table_elts(exclude_ip)->elts; for(i = 0; i < apr_table_elts(exclude_ip)->nelts; i++) { if(entry[i].val[0] == 'r') { if(strncmp(entry[i].key, QS_CONN_REMOTEIP(c), strlen(entry[i].key)) == 0) { // todo: ipv6 support return 1; } } else { if(strcmp(entry[i].key, QS_CONN_REMOTEIP(c)) == 0) { return 1; } } } } return 0; } /** * Comperator (ip search) for the client ip store qos_cc_*() * functions (used by bsearch/qsort) */ static int qos_cc_comp(const void *_pA, const void *_pB) { qos_s_entry_t *pA=*(( qos_s_entry_t **)_pA); qos_s_entry_t *pB=*(( qos_s_entry_t **)_pB); if(pA->ip6[0] > pB->ip6[0]) return 2; if(pA->ip6[0] < pB->ip6[0]) return -2; if(pA->ip6[1] > pB->ip6[1]) return 1; if(pA->ip6[1] < pB->ip6[1]) return -1; return 0; } static int qos_cc_compv4(const void *_pA, const void *_pB) { qos_s_entry_t *pA=*(( qos_s_entry_t **)_pA); qos_s_entry_t *pB=*(( qos_s_entry_t **)_pB); if(pA->ip6[1] > pB->ip6[1]) return 1; if(pA->ip6[1] < pB->ip6[1]) return -1; return 0; } /** * Comperator (time search) for the client ip store qos_cc_*() * functions (used by bsearch/qsort) */ static int qos_cc_comp_time(const void *_pA, const void *_pB) { qos_s_entry_t *pA=*(( qos_s_entry_t **)_pA); qos_s_entry_t *pB=*(( qos_s_entry_t **)_pB); if(pA->time > pB->time) return 1; if(pA->time < pB->time) return -1; return 0; } /** * creates new per client store * @param pool Persistent process pool * @param srec Server rec for sem/mutex * @param size Number of entries * @param limitTable Table of "QS_Limit" events * @return pointer to the per client data array */ static qos_s_t *qos_cc_new(apr_pool_t *pool, server_rec *srec, int size, apr_table_t *limitTable) { char *file = "-"; apr_shm_t *m; // per client memory table apr_shm_t *lm; // "limit" memory table apr_status_t res; int limitTableSize = apr_table_elts(limitTable)->nelts; int lsize = 0; int msize = APR_ALIGN_DEFAULT(sizeof(qos_s_t)) + (APR_ALIGN_DEFAULT(sizeof(qos_s_entry_t)) * size) + (2 * APR_ALIGN_DEFAULT(sizeof(qos_s_entry_t *)) * size); int i; qos_s_t *s; qos_s_entry_t *e; qos_s_entry_limit_t *limitTableEntry = NULL; msize = msize + 1024; if(limitTableSize > 0) { lsize = APR_ALIGN_DEFAULT(sizeof(qos_s_entry_limit_t)) * limitTableSize * size; lsize = lsize + 1024; } /* use anonymous shm by default */ if(limitTableSize > 0) { apr_shm_create(&lm, lsize, NULL, pool); } res = apr_shm_create(&m, msize, NULL, pool); if(APR_STATUS_IS_ENOTIMPL(res)) { char *lfile = apr_psprintf(pool, "%s_cc_ml.mod_qos", qos_tmpnam(pool, srec)); file = apr_psprintf(pool, "%s_cc_m.mod_qos", qos_tmpnam(pool, srec)); #ifdef ap_http_scheme /* Apache 2.2 */ if(limitTableSize > 0) { apr_shm_remove(lfile, pool); } apr_shm_remove(file, pool); #endif if(limitTableSize > 0) { apr_shm_create(&lm, lsize, lfile, pool); } res = apr_shm_create(&m, msize, file, pool); } ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, srec, QOS_LOGD_PFX"create shared memory (client control)(%s): %d bytes", file, msize + lsize); if(res != APR_SUCCESS) { char buf[MAX_STRING_LEN]; apr_strerror(res, buf, sizeof(buf)); ap_log_error(APLOG_MARK, APLOG_EMERG, 0, srec, QOS_LOG_PFX(002)"failed to create shared memory (client control)(%s): " "%s (%d bytes)", file, buf, msize); return NULL; } s = apr_shm_baseaddr_get(m); s->m = m; s->generation_locked = -1; if(limitTableSize > 0) { apr_table_entry_t *te = (apr_table_entry_t *)apr_table_elts(limitTable)->elts; limitTableEntry = apr_shm_baseaddr_get(lm); s->limitTable = apr_table_make(pool, limitTableSize+10); for(i = 0; i < limitTableSize; i++) { char *eventName = apr_pstrdup(pool, te[i].key); qos_s_entry_limit_conf_t *eventLimitConf = apr_pcalloc(pool, sizeof(qos_s_entry_limit_conf_t)); qos_s_entry_limit_conf_t *src = (qos_s_entry_limit_conf_t*)te[i].val; eventLimitConf->limit = src->limit; eventLimitConf->limit_time = src->limit_time; eventLimitConf->eventClearStr = apr_pstrcat(pool, eventName, QS_LIMIT_CLEAR, NULL); eventLimitConf->condStr = NULL; eventLimitConf->preg = NULL; if(src->condStr) { eventLimitConf->condStr = apr_pstrdup(pool, src->condStr); #ifdef AP_REGEX_H eventLimitConf->preg = ap_pregcomp(pool, src->condStr, AP_REG_EXTENDED); #else eventLimitConf->preg = ap_pregcomp(pool, src->condStr, REG_EXTENDED); #endif } apr_table_addn(s->limitTable, eventName, (char *)eventLimitConf); } } else { s->limitTable = NULL; } s->lock_file = apr_psprintf(pool, "%s_ccl.mod_qos", qos_tmpnam(pool, srec)); ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, srec, QOS_LOGD_PFX"create mutex (client control)(%s)", s->lock_file); res = apr_global_mutex_create(&s->lock, s->lock_file, APR_LOCK_DEFAULT, pool); if(res != APR_SUCCESS) { char buf[MAX_STRING_LEN]; apr_strerror(res, buf, sizeof(buf)); ap_log_error(APLOG_MARK, APLOG_EMERG, 0, srec, QOS_LOG_PFX(004)"failed to create mutex (client control)(%s): %s", s->lock_file, buf); apr_shm_destroy(s->m); s->m = NULL; s->lock = NULL; return NULL; } #ifdef AP_NEED_SET_MUTEX_PERMS qos_unixd_set_global_mutex_perms(s->lock); #endif e = (qos_s_entry_t *)&s[1]; s->ipd = (qos_s_entry_t **)&e[size]; s->timed = (qos_s_entry_t **)&s->ipd[size]; s->num = 0; s->max = size; s->msize = msize; s->connections = 0; s->html = 0; s->cssjs = 0; s->img = 0; s->other = 0; s->notmodified = 0; for(i = 0; i < size; i++) { s->ipd[i] = e; s->timed[i] = e; if(limitTableSize > 0) { e->limit = limitTableEntry; limitTableEntry += limitTableSize; } else { e->limit = NULL; } e++; } s->t = time(NULL); return s; } /** * Destroys the client data store */ static void qos_cc_free(qos_s_t *s) { /* We don't need to destroy locks or shared memory manually as apr_global_mutex_create() and apr_shm_create() register the cleanup methods themself to the pool we used when allocating the locks/memory. if(s->lock) { apr_global_mutex_destroy(s->lock); } if(s->m) { apr_shm_destroy(s->m); } if(s->lm) { apr_shm_destroy(s->lm); } */ } /** * searches an entry * @param s Client store (locked) * @param pA IP to search * @param now Current time (update access to the entry) * @return client entry or NULL if not available */ static qos_s_entry_t **qos_cc_get0(qos_s_t *s, qos_s_entry_t *pA, time_t now) { qos_s_entry_t **pB; unsigned char *b = (void *)&pA->ip6[1]; int mod = b[7] % m_qos_cc_partition; int max = (s->max / m_qos_cc_partition); int start = mod * max; if(m_ip_type == QS_IP_V4) { pB = bsearch((const void *)&pA, (const void *)&s->ipd[start], max, sizeof(qos_s_entry_t *), qos_cc_compv4); } else { pB = bsearch((const void *)&pA, (const void *)&s->ipd[start], max, sizeof(qos_s_entry_t *), qos_cc_comp); } if(pB) { if(now != 0) { s->t = now; } (*pB)->time = s->t; } return pB; } /** * inserts a new entry to the client data store * @param s Client store (locked) * @param pA IP to insert * @param now Current time (last access) * @return inserted entry */ static qos_s_entry_t **qos_cc_set(qos_s_t *s, qos_s_entry_t *pA, time_t now) { qos_s_entry_t **pB; unsigned char *b = (void *)&pA->ip6[1]; int mod = b[7] % m_qos_cc_partition; int max = (s->max / m_qos_cc_partition); int start = mod * max; s->t = now; qsort(&s->timed[start], max, sizeof(qos_s_entry_t *), qos_cc_comp_time); if(s->num < s->max) { s->num++; } pB = &s->timed[start]; (*pB)->ip6[0] = pA->ip6[0]; (*pB)->ip6[1] = pA->ip6[1]; (*pB)->time = now; if(m_ip_type == QS_IP_V4) { qsort(&s->ipd[start], max, sizeof(qos_s_entry_t *), qos_cc_compv4); } else { qsort(&s->ipd[start], max, sizeof(qos_s_entry_t *), qos_cc_comp); } (*pB)->vip = 0; (*pB)->lowrate = 0; (*pB)->lowratestatus = 0; (*pB)->block = 0; (*pB)->blockMsg = 0; (*pB)->block_time = 0; if(s->limitTable) { int i; for(i = 0; i < apr_table_elts(s->limitTable)->nelts; i++) { (*pB)->limit[i].limit = 0; (*pB)->limit[i].limit_time = 0; } } (*pB)->interval = now; (*pB)->req = 0; (*pB)->req_per_sec = 0; (*pB)->req_per_sec_block_rate = 0; (*pB)->event_req = 0; (*pB)->serialize = 0; (*pB)->serialize_queue = 0; (*pB)->html = 1; (*pB)->cssjs = 1; (*pB)->img = 1; (*pB)->other = 1; (*pB)->notmodified = 1; (*pB)->events = 0; return pB; } /* 000-255 */ int qos_dec32c(const char *x) { char buf[4]; strncpy(buf, x, 3); buf[3] = '\0'; return atoi(buf); } int qos_dec22c(const char *x) { char buf[4]; strncpy(buf, x, 2); buf[2] = '\0'; return atoi(buf); } /** * hex value for the char * @param x * @return hex value */ int qos_hex2c(const char *x) { int i, ch; ch = x[0]; if (isdigit(ch)) { i = ch - '0'; }else if (isupper(ch)) { i = ch - ('A' - 10); } else { i = ch - ('a' - 10); } i <<= 4; ch = x[1]; if (isdigit(ch)) { i += ch - '0'; } else if (isupper(ch)) { i += ch - ('A' - 10); } else { i += ch - ('a' - 10); } return i; } #define QOS_ISHEX(x) (((x >= '0') && (x <= '9')) || \ ((x >= 'a') && (x <= 'f')) || \ ((x >= 'A') && (x <= 'F'))) /** * url unescaping (%xx, \xHH, '+') * optional decoding: * - uni: MS IIS unicode %uXXXX * - ansi: ansi c esc (\n, \r, ...), not implemented * - char: charset conv, not implemented * - html: (amp/angelbr, &#xHH;, &#DDD;, &#DD;), not implemented ('&' is delimiter) */ static int qos_unescaping(char *x, int mode, int *error) { /* start with standard url decoding*/ int i, j, ch; if(x == 0) { return 0; } if(x[0] == '\0') { return 0; } for(i = 0, j = 0; x[i] != '\0'; i++, j++) { ch = x[i]; if(ch == '%') { if(QOS_ISHEX(x[i + 1]) && QOS_ISHEX(x[i + 2])) { /* url %xx */ ch = qos_hex2c(&x[i + 1]); i += 2; } else if((mode & QOS_DEC_MODE_FLAGS_UNI) && ((x[i + 1] == 'u') || (x[i + 1] == 'U')) && QOS_ISHEX(x[i + 2]) && QOS_ISHEX(x[i + 3]) && QOS_ISHEX(x[i + 4]) && QOS_ISHEX(x[i + 5])) { /* unicode %uXXXX */ ch = qos_hex2c(&x[i + 4]); if((ch > 0x00) && (ch < 0x5f) && ((x[i + 2] == 'f') || (x[i + 2] == 'F')) && ((x[i + 3] == 'f') || (x[i + 3] == 'F'))) { ch += 0x20; } i += 5; } else { (*error)++; } } else if((ch == '\\') && (mode & QOS_DEC_MODE_FLAGS_UNI) && ((x[i + 1] == 'u') || (x[i + 1] == 'U'))) { if(QOS_ISHEX(x[i + 2]) && QOS_ISHEX(x[i + 3]) && QOS_ISHEX(x[i + 4]) && QOS_ISHEX(x[i + 5])) { /* unicode \uXXXX */ ch = qos_hex2c(&x[i + 4]); if((ch > 0x00) && (ch < 0x5f) && ((x[i + 2] == 'f') || (x[i + 2] == 'F')) && ((x[i + 3] == 'f') || (x[i + 3] == 'F'))) { ch += 0x20; } i += 5; } else { (*error)++; } } else if(ch == '\\' && (x[i + 1] == 'x')) { if(QOS_ISHEX(x[i + 2]) && QOS_ISHEX(x[i + 3])) { /* url \xHH */ ch = qos_hex2c(&x[i + 2]); i += 3; } else { (*error)++; } } else if(ch == '+') { ch = ' '; } x[j] = ch; } x[j] = '\0'; return j; } /** * returns the request id from mod_unique_id (if available) */ static const char *qos_unique_id(request_rec *r, const char *eid) { const char *uid = apr_table_get(r->subprocess_env, "UNIQUE_ID"); if(eid) { apr_table_set(r->notes, "error-notes", eid); apr_table_set(r->subprocess_env, QS_ErrorNotes, eid); } if(uid == NULL) { /* generate simple id if mod_unique_id has not been not loaded */ qos_unique_id_t id; char *uidstr; int len; m_unique_id.unique_id_counter++; id.request_time = r->request_time; id.in_addr = m_unique_id.in_addr; id.pid = m_unique_id.pid; #if APR_HAS_THREADS id.tid = apr_os_thread_current(); #else id.tid = 0; #endif id.conn = r->connection->id; id.unique_id_counter = m_unique_id.unique_id_counter; uidstr = (char *)apr_pcalloc(r->pool, apr_base64_encode_len(sizeof(qos_unique_id_t))); len = qos_encode64_binary(uidstr, (const char *)&id, sizeof(qos_unique_id_t)); uidstr[len-2] = '\0'; uid = uidstr; apr_table_set(r->subprocess_env, "UNIQUE_ID", uid); } return uid; } /** * returns the version number of mod_qos * @param p Pool to alloc version string from * @return Version string */ static char *qos_revision(apr_pool_t *p) { return apr_pstrdup(p, g_revision); } /** * returns the request context */ static qs_req_ctx *qos_rctx_config_get(request_rec *r) { qs_req_ctx *rctx = ap_get_module_config(r->request_config, &qos_module); if(rctx == NULL) { rctx = apr_pcalloc(r->pool, sizeof(qs_req_ctx)); rctx->entry = NULL; rctx->entry_cond = NULL; rctx->evmsg = NULL; rctx->is_vip = 0; rctx->event_entries = apr_table_make(r->pool, 1); rctx->maxpostcount = 0; rctx->cc_event_req_set = 0; rctx->cc_serialize_set = 0; rctx->srv_serialize_set = 0; rctx->body_window = NULL; rctx->response_delayed = 0; ap_set_module_config(r->request_config, &qos_module, rctx); } return rctx; } /** * Adds the defined mod_qos_ev id to the request context (creates * the req ctx if necessary). * * @param r * @param id ID to set, e.g. "L;" or "D;" */ static void qs_set_evmsg(request_rec *r, const char *id) { qs_req_ctx *rctx = qos_rctx_config_get(r); if(rctx->evmsg == NULL || (strstr(rctx->evmsg, id) == NULL)) { rctx->evmsg = apr_pstrcat(r->pool, id, rctx->evmsg, NULL); } } /** * Encrypts and base64 encodes the provided buffer * @param r * @param sconf Secret to use (sconf->key) * @param b Buffer to encrypt * @param l Length of the buffer * @return Encrypted string (or NULL on error) */ static char *qos_encrypt(request_rec *r, qos_srv_config *sconf, const unsigned char *b, int l) { #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX cipher_ctx; EVP_CIPHER_CTX *cipher_ctx_p = &cipher_ctx; HMAC_CTX hmac; HMAC_CTX *hmac_p = &hmac; #else EVP_CIPHER_CTX *cipher_ctx_p; HMAC_CTX *hmac_p; #endif unsigned char hash[HMAC_MAX_MD_CBLOCK]; unsigned int hashLen = HMAC_MAX_MD_CBLOCK; int buf_len = 0; int len = 0; unsigned char *buf = apr_pcalloc(r->pool, + EVP_MAX_IV_LENGTH + QOS_HASH_LEN + l + EVP_CIPHER_block_size(EVP_des_ede3_cbc())); #if APR_HAS_RANDOM if(apr_generate_random_bytes(buf, EVP_MAX_IV_LENGTH) != APR_SUCCESS) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, QOS_LOG_PFX(080)"Can't generate random data, id=%s", qos_unique_id(r, NULL)); } #else if(!RAND_bytes(buf, EVP_MAX_IV_LENGTH)) { ap_log_rerror(APLOG_MARK, APLOG_ERR, 0, r, QOS_LOG_PFX(080)"Can't generate random data, id=%s", qos_unique_id(r, NULL)); } #endif /* checksum */ #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_init(hmac_p); #else hmac_p = HMAC_CTX_new(); #endif #ifndef OPENSSL_NO_MD5 HMAC_Init_ex(hmac_p, sconf->rawKey, sconf->rawKeyLen, EVP_md5(), NULL); #else HMAC_Init_ex(hmac_p, sconf->rawKey, sconf->rawKeyLen, EVP_sha256(), NULL); #endif HMAC_Update(hmac_p, b, l); HMAC_Final(hmac_p, hash, &hashLen); #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_cleanup(hmac_p); #else HMAC_CTX_free(hmac_p); #endif /* sym enc */ #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_init(cipher_ctx_p); #else cipher_ctx_p = EVP_CIPHER_CTX_new(); #endif EVP_EncryptInit(cipher_ctx_p, EVP_des_ede3_cbc(), sconf->key, (unsigned char *)buf); // skip iv, enc(hash + data) buf_len = EVP_MAX_IV_LENGTH; if(!EVP_EncryptUpdate(cipher_ctx_p, &buf[buf_len], &len, hash, QOS_HASH_LEN)) { goto failed; } buf_len+=len; if(!EVP_EncryptUpdate(cipher_ctx_p, &buf[buf_len], &len, b, l)) { goto failed; } buf_len+=len; if(!EVP_EncryptFinal(cipher_ctx_p, &buf[buf_len], &len)) { goto failed; } buf_len+=len; #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_cleanup(cipher_ctx_p); #else EVP_CIPHER_CTX_free(cipher_ctx_p); #endif /* b64 encode */ { char *data = (char *)apr_pcalloc(r->pool, 1 + apr_base64_encode_len(buf_len)); len = apr_base64_encode(data, (const char *)buf, buf_len); data[len] = '\0'; return data; } failed: #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_cleanup(cipher_ctx_p); #else EVP_CIPHER_CTX_free(cipher_ctx_p); #endif if(QS_ISDEBUG(r->server)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, QOS_LOGD_PFX"qos_encrypt() encryption operation failed, id=%s", qos_unique_id(r, NULL)); } return NULL; } /** * Decryptes the base64 encoded string (see qos_encrypt()). * @param r * @param sconf To access the secret * @param ret_buf Pointer to the decypted data (result), NULL if decyption fails * @param value Base64 encded string to decrypt * @return Length of the decypted data (0 if decyption failed) */ static int qos_decrypt(request_rec *r, qos_srv_config* sconf, unsigned char **ret_buf, const char *value) { #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX cipher_ctx; EVP_CIPHER_CTX *cipher_ctx_p = &cipher_ctx; #else EVP_CIPHER_CTX *cipher_ctx_p; #endif /* decode */ char *dec = (char *)apr_pcalloc(r->pool, 1 + apr_base64_decode_len(value)); int dec_len = apr_base64_decode(dec, value); *ret_buf = NULL; if(dec_len < (EVP_MAX_IV_LENGTH + QOS_HASH_LEN)) { if(QS_ISDEBUG(r->server)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, QOS_LOGD_PFX"qos_decrypt() base64 decoding failed, id=%s", qos_unique_id(r, NULL)); } return 0; } else { /* decrypt */ #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX hmac; HMAC_CTX *hmac_p = &hmac; #else HMAC_CTX *hmac_p; #endif unsigned char hash[HMAC_MAX_MD_CBLOCK]; unsigned int hashLen = HMAC_MAX_MD_CBLOCK; int len = 0; int buf_len = 0; unsigned char *buf; dec_len -= EVP_MAX_IV_LENGTH; buf = apr_pcalloc(r->pool, dec_len); /* sym dec */ #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_init(cipher_ctx_p); #else cipher_ctx_p = EVP_CIPHER_CTX_new(); #endif EVP_DecryptInit(cipher_ctx_p, EVP_des_ede3_cbc(), sconf->key, (unsigned char *)dec); if(!EVP_DecryptUpdate(cipher_ctx_p, (unsigned char *)&buf[buf_len], &len, (const unsigned char *)&dec[EVP_MAX_IV_LENGTH], dec_len)) { goto failed; } buf_len+=len; if(!EVP_DecryptFinal(cipher_ctx_p, (unsigned char *)&buf[buf_len], &len)) { goto failed; } buf_len+=len; #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_cleanup(cipher_ctx_p); #else EVP_CIPHER_CTX_free(cipher_ctx_p); #endif // hash + data if(buf_len < (QOS_HASH_LEN + 1)) { if(QS_ISDEBUG(r->server)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, QOS_LOGD_PFX"qos_decrypt() misshing hash, id=%s", qos_unique_id(r, NULL)); } return 0; } /* checksum */ buf_len -= QOS_HASH_LEN; #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_init(hmac_p); #else hmac_p = HMAC_CTX_new(); #endif #ifndef OPENSSL_NO_MD5 HMAC_Init_ex(hmac_p, sconf->rawKey, sconf->rawKeyLen, EVP_md5(), NULL); #else HMAC_Init_ex(hmac_p, sconf->rawKey, sconf->rawKeyLen, EVP_sha256(), NULL); #endif HMAC_Update(hmac_p, &buf[QOS_HASH_LEN], buf_len); HMAC_Final(hmac_p, hash, &hashLen); #if OPENSSL_VERSION_NUMBER < 0x10100000L HMAC_CTX_cleanup(hmac_p); #else HMAC_CTX_free(hmac_p); #endif if(hashLen > QOS_HASH_LEN) { // we don't keep more than 16 bytes hashLen = QOS_HASH_LEN; } if(memcmp(hash, buf, hashLen) != 0) { if(QS_ISDEBUG(r->server)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, QOS_LOGD_PFX"qos_decrypt() invalid hash, id=%s", qos_unique_id(r, NULL)); } return 0; } /* decrypted and valid */ *ret_buf = &buf[QOS_HASH_LEN]; return buf_len; } failed: #if OPENSSL_VERSION_NUMBER < 0x10100000L EVP_CIPHER_CTX_cleanup(cipher_ctx_p); #else EVP_CIPHER_CTX_free(cipher_ctx_p); #endif if(QS_ISDEBUG(r->server)) { ap_log_rerror(APLOG_MARK, APLOG_DEBUG, 0, r, QOS_LOGD_PFX"qos_decrypt() decryption operation failed, id=%s", qos_unique_id(r, NULL)); } return 0; } /** * Adds the user tracking cookie to r->headers_out if QOS_USER_TRACKING_NEW env variable * has been set. * @param r * @param sconf * @param status (302 or other) */ static void qos_send_user_tracking_cookie(request_rec *r, qos_srv_config* sconf, int status) { const char *new_user = apr_table_get(r->subprocess_env, QOS_USER_TRACKING_NEW); if(new_user) { char *sc; apr_size_t retcode; char tstr[MAX_STRING_LEN]; apr_time_exp_t n; int new_user_len = strlen(new_user); int len = 2 + new_user_len; unsigned char *value = apr_pcalloc(r->pool, len + 1); char *c; char *domain = NULL; apr_time_exp_gmt(&n, r->request_time); apr_strftime(tstr, &retcode, sizeof(tstr), "%m", &n); memcpy(value, tstr, 2); memcpy(&value[2], new_user, new_user_len); value[len] = '\0'; c = qos_encrypt(r, sconf, value, len + 1); if(sconf->user_tracking_cookie_domain != NULL) { domain = apr_pstrcat(r->pool, "; Domain=", sconf->user_tracking_cookie_domain, NULL); } /* set cookie valid for 300 days or for this session only */ sc = apr_psprintf(r->pool, "%s=%s; Path=/%s%s", sconf->user_tracking_cookie, c, sconf->user_tracking_cookie_session < 1 ? "; Max-Age=25920000" : "", domain != NULL ? domain : ""); if(status != HTTP_MOVED_TEMPORARILY) { apr_table_add(r->headers_out, "Set-Cookie", sc); } else { apr_table_add(r->err_headers_out, "Set-Cookie", sc); } } return; } /** * Verifies and sets the user tracking cookie * - QOS_USER_TRACKING if the cookie was available * - QOS_USER_TRACKING_NEW if a new cookie needs to be set * * syntax: b64(enc()) * * shall be called after(!) mod_unique_id has created an id * * @param r * @param sconf * @param value Cookie received from the client, possibly null (see qos_get_remove_cookie()) */ static void qos_get_create_user_tracking(request_rec *r, qos_srv_config* sconf, const char *value) { const char *uid = qos_unique_id(r, NULL); const char *verified = NULL; if(value != NULL) { int buf_len = 0; unsigned char *buf; buf_len = qos_decrypt(r, sconf, &buf, value); if(buf_len > 0) { verified = (char *)buf; } } if(verified == NULL) { verified = uid; apr_table_set(r->subprocess_env, QOS_USER_TRACKING_NEW, verified); qs_set_evmsg(r, "u;"); } else if(strlen(verified) > 2) { apr_size_t retcode; char tstr[MAX_STRING_LEN]; apr_time_exp_t n; apr_time_exp_gmt(&n, r->request_time); apr_strftime(tstr, &retcode, sizeof(tstr), "%m", &n); if(strncmp(tstr, verified, 2) != 0) { /* renew, if not from this month */ apr_table_set(r->subprocess_env, QOS_USER_TRACKING_NEW, &verified[2]); } verified = &verified[2]; } else { verified = uid; apr_table_set(r->subprocess_env, QOS_USER_TRACKING_NEW, verified); } apr_table_set(r->subprocess_env, QOS_USER_TRACKING, verified); return; } /** * Adds new milestone cookie to the response headers if QOS_MILESTONE_COOKIE * has been set. * See qos_verify_milestone() about the syntax. */ static void qos_update_milestone(request_rec *r, qos_srv_config* sconf) { const char *new_ms = apr_table_get(r->subprocess_env, QOS_MILESTONE_COOKIE); if(new_ms) { apr_time_t now = apr_time_sec(r->request_time); int new_ms_len = strlen(new_ms); int len = sizeof(apr_time_t) + new_ms_len; unsigned char *value = apr_pcalloc(r->pool, len + 1); char *c; memcpy(value, &now, sizeof(apr_time_t)); memcpy(&value[sizeof(apr_time_t)], new_ms, new_ms_len); value[len] = '\0'; c = qos_encrypt(r, sconf, value, len); apr_table_add(r->headers_out, "Set-Cookie", apr_psprintf(r->pool, "%s=%s; Path=/;", QOS_MILESTONE_COOKIE, c)); } return; } /** * Verifies the milestone. Evaluates rule and enforces it. Does also set the * QOS_MILESTONE_COOKIE variable if a new milestone has been reached. * * milestone cookie syntax: b64(enc(