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/* Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /** * @file http_log.h * @brief Apache Logging library * * @defgroup APACHE_CORE_LOG Logging library * @ingroup APACHE_CORE * @{ */ #ifndef APACHE_HTTP_LOG_H #define APACHE_HTTP_LOG_H #ifdef __cplusplus extern "C" { #endif #include "apr_thread_proc.h" #include "http_config.h" #ifdef HAVE_SYSLOG #include <syslog.h> #ifndef LOG_PRIMASK #define LOG_PRIMASK 7 #endif #define APLOG_EMERG LOG_EMERG /* system is unusable */ #define APLOG_ALERT LOG_ALERT /* action must be taken immediately */ #define APLOG_CRIT LOG_CRIT /* critical conditions */ #define APLOG_ERR LOG_ERR /* error conditions */ #define APLOG_WARNING LOG_WARNING /* warning conditions */ #define APLOG_NOTICE LOG_NOTICE /* normal but significant condition */ #define APLOG_INFO LOG_INFO /* informational */ #define APLOG_DEBUG LOG_DEBUG /* debug-level messages */ #define APLOG_TRACE1 (LOG_DEBUG + 1) /* trace-level 1 messages */ #define APLOG_TRACE2 (LOG_DEBUG + 2) /* trace-level 2 messages */ #define APLOG_TRACE3 (LOG_DEBUG + 3) /* trace-level 3 messages */ #define APLOG_TRACE4 (LOG_DEBUG + 4) /* trace-level 4 messages */ #define APLOG_TRACE5 (LOG_DEBUG + 5) /* trace-level 5 messages */ #define APLOG_TRACE6 (LOG_DEBUG + 6) /* trace-level 6 messages */ #define APLOG_TRACE7 (LOG_DEBUG + 7) /* trace-level 7 messages */ #define APLOG_TRACE8 (LOG_DEBUG + 8) /* trace-level 8 messages */ #define APLOG_LEVELMASK 15 /* mask off the level value */ #else #define APLOG_EMERG 0 /* system is unusable */ #define APLOG_ALERT 1 /* action must be taken immediately */ #define APLOG_CRIT 2 /* critical conditions */ #define APLOG_ERR 3 /* error conditions */ #define APLOG_WARNING 4 /* warning conditions */ #define APLOG_NOTICE 5 /* normal but significant condition */ #define APLOG_INFO 6 /* informational */ #define APLOG_DEBUG 7 /* debug-level messages */ #define APLOG_TRACE1 8 /* trace-level 1 messages */ #define APLOG_TRACE2 9 /* trace-level 2 messages */ #define APLOG_TRACE3 10 /* trace-level 3 messages */ #define APLOG_TRACE4 11 /* trace-level 4 messages */ #define APLOG_TRACE5 12 /* trace-level 5 messages */ #define APLOG_TRACE6 13 /* trace-level 6 messages */ #define APLOG_TRACE7 14 /* trace-level 7 messages */ #define APLOG_TRACE8 15 /* trace-level 8 messages */ #define APLOG_LEVELMASK 15 /* mask off the level value */ #endif /* APLOG_NOERRNO is ignored and should not be used. It will be * removed in a future release of Apache. */ #define APLOG_NOERRNO (APLOG_LEVELMASK + 1) /** Use APLOG_TOCLIENT on ap_log_rerror() to give content * handlers the option of including the error text in the * ErrorDocument sent back to the client. Setting APLOG_TOCLIENT * will cause the error text to be saved in the request_rec->notes * table, keyed to the string "error-notes", if and only if: * - the severity level of the message is APLOG_WARNING or greater * - there are no other "error-notes" set in request_rec->notes * Once error-notes is set, it is up to the content handler to * determine whether this text should be sent back to the client. * Note: Client generated text streams sent back to the client MUST * be escaped to prevent CSS attacks. */ #define APLOG_TOCLIENT ((APLOG_LEVELMASK + 1) * 2) /* normal but significant condition on startup, usually printed to stderr */ #define APLOG_STARTUP ((APLOG_LEVELMASK + 1) * 4) #ifndef DEFAULT_LOGLEVEL #define DEFAULT_LOGLEVEL APLOG_WARNING #endif /** * APLOGNO() should be used at the start of the format string passed * to ap_log_error() and friends. The argument must be a 5 digit decimal * number. It creates a tag of the form "AH02182: " * See docs/log-message-tags/README for details. */ #define APLOGNO(n) "AH" #n ": " /** * APLOG_NO_MODULE may be passed as module_index to ap_log_error() and related * functions if the module causing the log message is not known. Normally this * should not be used directly. Use ::APLOG_MARK or ::APLOG_MODULE_INDEX * instead. * * @see APLOG_MARK * @see APLOG_MODULE_INDEX * @see ap_log_error */ #define APLOG_NO_MODULE -1 #ifdef __cplusplus /** * C++ modules must invoke ::APLOG_USE_MODULE or ::AP_DECLARE_MODULE in * every file which uses ap_log_* before the first use of ::APLOG_MARK * or ::APLOG_MODULE_INDEX. * (C modules *should* do that as well, to enable module-specific log * levels. C modules need not obey the ordering, though). */ #else /* __cplusplus */ /** * Constant to store module_index for the current file. * Objects with static storage duration are set to NULL if not * initialized explicitly. This means that if aplog_module_index * is not initialized using the ::APLOG_USE_MODULE or the * ::AP_DECLARE_MODULE macro, we can safely fall back to * use ::APLOG_NO_MODULE. This variable will usually be optimized away. */ static int * const aplog_module_index; #endif /* __cplusplus */ /** * APLOG_MODULE_INDEX contains the module_index of the current module if * it has been set via the ::APLOG_USE_MODULE or ::AP_DECLARE_MODULE macro. * Otherwise it contains ::APLOG_NO_MODULE (for example in unmodified httpd * 2.2 modules). * * If ::APLOG_MARK is used in ap_log_error() and related functions, * ::APLOG_MODULE_INDEX will be passed as module_index. In cases where * ::APLOG_MARK cannot be used, ::APLOG_MODULE_INDEX should normally be passed * as module_index. * * @see APLOG_MARK * @see ap_log_error */ #ifdef __cplusplus #define APLOG_MODULE_INDEX (*aplog_module_index) #else /* __cplusplus */ #define APLOG_MODULE_INDEX \ (aplog_module_index ? *aplog_module_index : APLOG_NO_MODULE) #endif /* __cplusplus */ /** * APLOG_MAX_LOGLEVEL can be defined to remove logging above some * specified level at compile time. * * This requires a C99 compiler. */ #ifdef DOXYGEN #define APLOG_MAX_LOGLEVEL #endif #ifndef APLOG_MAX_LOGLEVEL #define APLOG_MODULE_IS_LEVEL(s,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (s == NULL) || \ (ap_get_server_module_loglevel(s, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) #define APLOG_C_MODULE_IS_LEVEL(c,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_conn_module_loglevel(c, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) #define APLOG_CS_MODULE_IS_LEVEL(c,s,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_conn_server_module_loglevel(c, s, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) #define APLOG_R_MODULE_IS_LEVEL(r,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_request_module_loglevel(r, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) #else #define APLOG_MODULE_IS_LEVEL(s,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (s == NULL) || \ (ap_get_server_module_loglevel(s, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) ) #define APLOG_CS_MODULE_IS_LEVEL(c,s,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_conn_server_module_loglevel(c, s, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) ) #define APLOG_C_MODULE_IS_LEVEL(c,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_conn_module_loglevel(c, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) ) #define APLOG_R_MODULE_IS_LEVEL(r,module_index,level) \ ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \ ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \ (ap_get_request_module_loglevel(r, module_index) \ >= ((level)&APLOG_LEVELMASK) ) ) ) #endif #define APLOG_IS_LEVEL(s,level) \ APLOG_MODULE_IS_LEVEL(s,APLOG_MODULE_INDEX,level) #define APLOG_C_IS_LEVEL(c,level) \ APLOG_C_MODULE_IS_LEVEL(c,APLOG_MODULE_INDEX,level) #define APLOG_CS_IS_LEVEL(c,s,level) \ APLOG_CS_MODULE_IS_LEVEL(c,s,APLOG_MODULE_INDEX,level) #define APLOG_R_IS_LEVEL(r,level) \ APLOG_R_MODULE_IS_LEVEL(r,APLOG_MODULE_INDEX,level) #define APLOGinfo(s) APLOG_IS_LEVEL(s,APLOG_INFO) #define APLOGdebug(s) APLOG_IS_LEVEL(s,APLOG_DEBUG) #define APLOGtrace1(s) APLOG_IS_LEVEL(s,APLOG_TRACE1) #define APLOGtrace2(s) APLOG_IS_LEVEL(s,APLOG_TRACE2) #define APLOGtrace3(s) APLOG_IS_LEVEL(s,APLOG_TRACE3) #define APLOGtrace4(s) APLOG_IS_LEVEL(s,APLOG_TRACE4) #define APLOGtrace5(s) APLOG_IS_LEVEL(s,APLOG_TRACE5) #define APLOGtrace6(s) APLOG_IS_LEVEL(s,APLOG_TRACE6) #define APLOGtrace7(s) APLOG_IS_LEVEL(s,APLOG_TRACE7) #define APLOGtrace8(s) APLOG_IS_LEVEL(s,APLOG_TRACE8) #define APLOGrinfo(r) APLOG_R_IS_LEVEL(r,APLOG_INFO) #define APLOGrdebug(r) APLOG_R_IS_LEVEL(r,APLOG_DEBUG) #define APLOGrtrace1(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE1) #define APLOGrtrace2(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE2) #define APLOGrtrace3(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE3) #define APLOGrtrace4(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE4) #define APLOGrtrace5(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE5) #define APLOGrtrace6(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE6) #define APLOGrtrace7(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE7) #define APLOGrtrace8(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE8) #define APLOGcinfo(c) APLOG_C_IS_LEVEL(c,APLOG_INFO) #define APLOGcdebug(c) APLOG_C_IS_LEVEL(c,APLOG_DEBUG) #define APLOGctrace1(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE1) #define APLOGctrace2(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE2) #define APLOGctrace3(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE3) #define APLOGctrace4(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE4) #define APLOGctrace5(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE5) #define APLOGctrace6(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE6) #define APLOGctrace7(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE7) #define APLOGctrace8(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE8) AP_DECLARE_DATA extern int ap_default_loglevel; /** * APLOG_MARK is a convenience macro for use as the first three parameters in * ap_log_error() and related functions, i.e. file, line, and module_index. * * The module_index parameter was introduced in version 2.3.6. Before that * version, APLOG_MARK only replaced the file and line parameters. * This means that APLOG_MARK can be used with ap_log_*error in all versions * of Apache httpd. * * @see APLOG_MODULE_INDEX * @see ap_log_error * @see ap_log_cerror * @see ap_log_rerror * @see ap_log_cserror */ #define APLOG_MARK __FILE__,__LINE__,APLOG_MODULE_INDEX /** * Set up for logging to stderr. * @param p The pool to allocate out of */ AP_DECLARE(void) ap_open_stderr_log(apr_pool_t *p); /** * Replace logging to stderr with logging to the given file. * @param p The pool to allocate out of * @param file Name of the file to log stderr output */ AP_DECLARE(apr_status_t) ap_replace_stderr_log(apr_pool_t *p, const char *file); /** * Open the error log and replace stderr with it. * @param pconf Not used * @param plog The pool to allocate the logs from * @param ptemp Pool used for temporary allocations * @param s_main The main server * @note ap_open_logs isn't expected to be used by modules, it is * an internal core function */ int ap_open_logs(apr_pool_t *pconf, apr_pool_t *plog, apr_pool_t *ptemp, server_rec *s_main); /** * Perform special processing for piped loggers in MPM child * processes. * @param p Not used * @param s Not used * @note ap_logs_child_init is not for use by modules; it is an * internal core function */ void ap_logs_child_init(apr_pool_t *p, server_rec *s); /* * The primary logging functions, ap_log_error, ap_log_rerror, ap_log_cerror, * and ap_log_perror use a printf style format string to build the log message. * It is VERY IMPORTANT that you not include any raw data from the network, * such as the request-URI or request header fields, within the format * string. Doing so makes the server vulnerable to a denial-of-service * attack and other messy behavior. Instead, use a simple format string * like "%s", followed by the string containing the untrusted data. */ /** * ap_log_error() - log messages which are not related to a particular * request or connection. This uses a printf-like format to log messages * to the error_log. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module generating this message * @param level The level of this error message * @param status The status code from the previous command * @param s The server on which we are logging * @param fmt The format string * @param ... The arguments to use to fill out fmt. * @note ap_log_error is implemented as a macro * @note Use APLOG_MARK to fill out file and line * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. Otherwise, if a conn_rec is * available, use that with ap_log_cerror() in preference to calling * this function. * @warning It is VERY IMPORTANT that you not include any raw data from * the network, such as the request-URI or request header fields, within * the format string. Doing so makes the server vulnerable to a * denial-of-service attack and other messy behavior. Instead, use a * simple format string like "%s", followed by the string containing the * untrusted data. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_error(const char *file, int line, int module_index, int level, apr_status_t status, const server_rec *s, const char *fmt, ...); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_error(...) ap_log_error__(__VA_ARGS__) /* need server_rec *sr = ... for the case if s is verbatim NULL */ #define ap_log_error__(file, line, mi, level, status, s, ...) \ do { const server_rec *sr__ = s; if (APLOG_MODULE_IS_LEVEL(sr__, mi, level)) \ ap_log_error_(file, line, mi, level, status, sr__, __VA_ARGS__); \ } while(0) #else #define ap_log_error ap_log_error_ #endif AP_DECLARE(void) ap_log_error_(const char *file, int line, int module_index, int level, apr_status_t status, const server_rec *s, const char *fmt, ...) __attribute__((format(printf,7,8))); #endif /** * ap_log_perror() - log messages which are not related to a particular * request, connection, or virtual server. This uses a printf-like * format to log messages to the error_log. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index ignored dummy value for use by APLOG_MARK * @param level The level of this error message * @param status The status code from the previous command * @param p The pool which we are logging for * @param fmt The format string * @param ... The arguments to use to fill out fmt. * @note ap_log_perror is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @warning It is VERY IMPORTANT that you not include any raw data from * the network, such as the request-URI or request header fields, within * the format string. Doing so makes the server vulnerable to a * denial-of-service attack and other messy behavior. Instead, use a * simple format string like "%s", followed by the string containing the * untrusted data. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_perror(const char *file, int line, int module_index, int level, apr_status_t status, apr_pool_t *p, const char *fmt, ...); #else #if defined(AP_HAVE_C99) && defined(APLOG_MAX_LOGLEVEL) /* need additional step to expand APLOG_MARK first */ #define ap_log_perror(...) ap_log_perror__(__VA_ARGS__) #define ap_log_perror__(file, line, mi, level, status, p, ...) \ do { if ((level) <= APLOG_MAX_LOGLEVEL ) \ ap_log_perror_(file, line, mi, level, status, p, \ __VA_ARGS__); } while(0) #else #define ap_log_perror ap_log_perror_ #endif AP_DECLARE(void) ap_log_perror_(const char *file, int line, int module_index, int level, apr_status_t status, apr_pool_t *p, const char *fmt, ...) __attribute__((format(printf,7,8))); #endif /** * ap_log_rerror() - log messages which are related to a particular * request. This uses a printf-like format to log messages to the * error_log. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module generating this message * @param level The level of this error message * @param status The status code from the previous command * @param r The request which we are logging for * @param fmt The format string * @param ... The arguments to use to fill out fmt. * @note ap_log_rerror is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @warning It is VERY IMPORTANT that you not include any raw data from * the network, such as the request-URI or request header fields, within * the format string. Doing so makes the server vulnerable to a * denial-of-service attack and other messy behavior. Instead, use a * simple format string like "%s", followed by the string containing the * untrusted data. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_rerror(const char *file, int line, int module_index, int level, apr_status_t status, const request_rec *r, const char *fmt, ...); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_rerror(...) ap_log_rerror__(__VA_ARGS__) #define ap_log_rerror__(file, line, mi, level, status, r, ...) \ do { if (APLOG_R_MODULE_IS_LEVEL(r, mi, level)) \ ap_log_rerror_(file, line, mi, level, status, r, __VA_ARGS__); \ } while(0) #else #define ap_log_rerror ap_log_rerror_ #endif AP_DECLARE(void) ap_log_rerror_(const char *file, int line, int module_index, int level, apr_status_t status, const request_rec *r, const char *fmt, ...) __attribute__((format(printf,7,8))); #endif /** * ap_log_cerror() - log messages which are related to a particular * connection. This uses a printf-like format to log messages to the * error_log. * @param file The file in which this function is called * @param line The line number on which this function is called * @param level The level of this error message * @param module_index The module_index of the module generating this message * @param status The status code from the previous command * @param c The connection which we are logging for * @param fmt The format string * @param ... The arguments to use to fill out fmt. * @note ap_log_cerror is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. * @warning It is VERY IMPORTANT that you not include any raw data from * the network, such as the request-URI or request header fields, within * the format string. Doing so makes the server vulnerable to a * denial-of-service attack and other messy behavior. Instead, use a * simple format string like "%s", followed by the string containing the * untrusted data. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_cerror(const char *file, int line, int module_index, int level, apr_status_t status, const conn_rec *c, const char *fmt, ...); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_cerror(...) ap_log_cerror__(__VA_ARGS__) #define ap_log_cerror__(file, line, mi, level, status, c, ...) \ do { if (APLOG_C_MODULE_IS_LEVEL(c, mi, level)) \ ap_log_cerror_(file, line, mi, level, status, c, __VA_ARGS__); \ } while(0) #else #define ap_log_cerror ap_log_cerror_ #endif AP_DECLARE(void) ap_log_cerror_(const char *file, int line, int module_index, int level, apr_status_t status, const conn_rec *c, const char *fmt, ...) __attribute__((format(printf,7,8))); #endif /** * ap_log_cserror() - log messages which are related to a particular * connection and to a vhost other than c->base_server. This uses a * printf-like format to log messages to the error_log. * @param file The file in which this function is called * @param line The line number on which this function is called * @param level The level of this error message * @param module_index The module_index of the module generating this message * @param status The status code from the previous command * @param c The connection which we are logging for * @param s The server which we are logging for * @param fmt The format string * @param ... The arguments to use to fill out fmt. * @note ap_log_cserror is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. This function is mainly useful for * modules like mod_ssl to use before the request_rec is created. * @warning It is VERY IMPORTANT that you not include any raw data from * the network, such as the request-URI or request header fields, within * the format string. Doing so makes the server vulnerable to a * denial-of-service attack and other messy behavior. Instead, use a * simple format string like "%s", followed by the string containing the * untrusted data. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_cserror(const char *file, int line, int module_index, int level, apr_status_t status, const conn_rec *c, const server_rec *s, const char *fmt, ...); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_cserror(...) ap_log_cserror__(__VA_ARGS__) #define ap_log_cserror__(file, line, mi, level, status, c, s, ...) \ do { if (APLOG_CS_MODULE_IS_LEVEL(c, s, mi, level)) \ ap_log_cserror_(file, line, mi, level, status, c, s, \ __VA_ARGS__); \ } while(0) #else #define ap_log_cserror ap_log_cserror_ #endif AP_DECLARE(void) ap_log_cserror_(const char *file, int line, int module_index, int level, apr_status_t status, const conn_rec *c, const server_rec *s, const char *fmt, ...) __attribute__((format(printf,8,9))); #endif /* * The buffer logging functions, ap_log_data, ap_log_rdata, ap_log_cdata, * and ap_log_csdata log a buffer in printable and hex format. The exact * format is controlled by processing flags, described next. */ /** * Processing flags for ap_log_data() et al * * AP_LOG_DATA_DEFAULT - default formatting, with printable chars and hex * AP_LOG_DATA_SHOW_OFFSET - prefix each line with hex offset from the start * of the buffer */ #define AP_LOG_DATA_DEFAULT 0 #define AP_LOG_DATA_SHOW_OFFSET 1 /** * ap_log_data() - log buffers which are not related to a particular request * or connection. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module logging this buffer * @param level The log level * @param s The server on which we are logging * @param label A label for the buffer, to be logged preceding the buffer * @param data The buffer to be logged * @param len The length of the buffer * @param flags Special processing flags like AP_LOG_DATA_SHOW_OFFSET * @note ap_log_data is implemented as a macro. * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rdata() * in preference to calling this function. Otherwise, if a conn_rec is * available, use that with ap_log_cdata() in preference to calling * this function. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_data(const char *file, int line, int module_index, int level, const server_rec *s, const char *label, const void *data, apr_size_t len, unsigned int flags); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_data(...) ap_log_data__(__VA_ARGS__) /* need server_rec *sr = ... for the case if s is verbatim NULL */ #define ap_log_data__(file, line, mi, level, s, ...) \ do { const server_rec *sr__ = s; if (APLOG_MODULE_IS_LEVEL(sr__, mi, level)) \ ap_log_data_(file, line, mi, level, sr__, __VA_ARGS__); \ } while(0) #else #define ap_log_data ap_log_data_ #endif AP_DECLARE(void) ap_log_data_(const char *file, int line, int module_index, int level, const server_rec *s, const char *label, const void *data, apr_size_t len, unsigned int flags); #endif /** * ap_log_rdata() - log buffers which are related to a particular request. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module logging this buffer * @param level The log level * @param r The request which we are logging for * @param label A label for the buffer, to be logged preceding the buffer * @param data The buffer to be logged * @param len The length of the buffer * @param flags Special processing flags like AP_LOG_DATA_SHOW_OFFSET * @note ap_log_rdata is implemented as a macro. * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. Otherwise, if a conn_rec is * available, use that with ap_log_cerror() in preference to calling * this function. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_rdata(const char *file, int line, int module_index, int level, const request_rec *r, const char *label, const void *data, apr_size_t len, unsigned int flags); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_rdata(...) ap_log_rdata__(__VA_ARGS__) #define ap_log_rdata__(file, line, mi, level, r, ...) \ do { if (APLOG_R_MODULE_IS_LEVEL(r, mi, level)) \ ap_log_rdata_(file, line, mi, level, r, __VA_ARGS__); \ } while(0) #else #define ap_log_rdata ap_log_rdata_ #endif AP_DECLARE(void) ap_log_rdata_(const char *file, int line, int module_index, int level, const request_rec *r, const char *label, const void *data, apr_size_t len, unsigned int flags); #endif /** * ap_log_cdata() - log buffers which are related to a particular connection. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module logging this buffer * @param level The log level * @param c The connection which we are logging for * @param label A label for the buffer, to be logged preceding the buffer * @param data The buffer to be logged * @param len The length of the buffer * @param flags Special processing flags like AP_LOG_DATA_SHOW_OFFSET * @note ap_log_cdata is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. Otherwise, if a conn_rec is * available, use that with ap_log_cerror() in preference to calling * this function. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_cdata(const char *file, int line, int module_index, int level, const conn_rec *c, const char *label, const void *data, apr_size_t len, unsigned int flags); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_cdata(...) ap_log_cdata__(__VA_ARGS__) #define ap_log_cdata__(file, line, mi, level, c, ...) \ do { if (APLOG_C_MODULE_IS_LEVEL(c, mi, level)) \ ap_log_cdata_(file, line, mi, level, c, __VA_ARGS__); \ } while(0) #else #define ap_log_cdata ap_log_cdata_ #endif AP_DECLARE(void) ap_log_cdata_(const char *file, int line, int module_index, int level, const conn_rec *c, const char *label, const void *data, apr_size_t len, unsigned int flags); #endif /** * ap_log_csdata() - log buffers which are related to a particular connection * and to a vhost other than c->base_server. * @param file The file in which this function is called * @param line The line number on which this function is called * @param module_index The module_index of the module logging this buffer * @param level The log level * @param c The connection which we are logging for * @param s The server which we are logging for * @param label A label for the buffer, to be logged preceding the buffer * @param data The buffer to be logged * @param len The length of the buffer * @param flags Special processing flags like AP_LOG_DATA_SHOW_OFFSET * @note ap_log_csdata is implemented as a macro * @note Use APLOG_MARK to fill out file, line, and module_index * @note If a request_rec is available, use that with ap_log_rerror() * in preference to calling this function. Otherwise, if a conn_rec is * available, use that with ap_log_cerror() in preference to calling * this function. */ #ifdef DOXYGEN AP_DECLARE(void) ap_log_csdata(const char *file, int line, int module_index, int level, const conn_rec *c, const server_rec *s, const char *label, const void *data, apr_size_t len, unsigned int flags); #else #ifdef AP_HAVE_C99 /* need additional step to expand APLOG_MARK first */ #define ap_log_csdata(...) ap_log_csdata__(__VA_ARGS__) #define ap_log_csdata__(file, line, mi, level, c, s, ...) \ do { if (APLOG_CS_MODULE_IS_LEVEL(c, s, mi, level)) \ ap_log_csdata_(file, line, mi, level, c, s, __VA_ARGS__); \ } while(0) #else #define ap_log_cdata ap_log_cdata_ #endif AP_DECLARE(void) ap_log_csdata_(const char *file, int line, int module_index, int level, const conn_rec *c, const server_rec *s, const char *label, const void *data, apr_size_t len, unsigned int flags); #endif /** * Convert stderr to the error log * @param s The current server */ AP_DECLARE(void) ap_error_log2stderr(server_rec *s); /** * Log the command line used to start the server. * @param p The pool to use for logging * @param s The server_rec whose process's command line we want to log. * The command line is logged to that server's error log. */ AP_DECLARE(void) ap_log_command_line(apr_pool_t *p, server_rec *s); /** * Log common (various) MPM shared data at startup. * @param s The server_rec of the error log we want to log to. * Misc commonly logged data is logged to that server's error log. */ AP_DECLARE(void) ap_log_mpm_common(server_rec *s); /** * Log the current pid of the parent process * @param p The pool to use for processing * @param fname The name of the file to log to. If the filename is not * absolute then it is assumed to be relative to ServerRoot. */ AP_DECLARE(void) ap_log_pid(apr_pool_t *p, const char *fname); /** * Remove the pidfile. * @param p The pool to use for processing * @param fname The name of the pid file to remove. If the filename is not * absolute then it is assumed to be relative to ServerRoot. */ AP_DECLARE(void) ap_remove_pid(apr_pool_t *p, const char *fname); /** * Retrieve the pid from a pidfile. * @param p The pool to use for processing * @param filename The name of the file containing the pid. If the filename is not * absolute then it is assumed to be relative to ServerRoot. * @param mypid Pointer to pid_t (valid only if return APR_SUCCESS) */ AP_DECLARE(apr_status_t) ap_read_pid(apr_pool_t *p, const char *filename, pid_t *mypid); /** @see piped_log */ typedef struct piped_log piped_log; /** * Open the piped log process * @param p The pool to allocate out of * @param program The program to run in the logging process * @return The piped log structure * @note The log program is invoked as @p APR_PROGRAM_ENV, * @see ap_open_piped_log_ex to modify this behavior */ AP_DECLARE(piped_log *) ap_open_piped_log(apr_pool_t *p, const char *program); /** * Open the piped log process specifying the execution choice for program * @param p The pool to allocate out of * @param program The program to run in the logging process * @param cmdtype How to invoke program, e.g. APR_PROGRAM, APR_SHELLCMD_ENV, etc * @return The piped log structure */ AP_DECLARE(piped_log *) ap_open_piped_log_ex(apr_pool_t *p, const char *program, apr_cmdtype_e cmdtype); /** * Close the piped log and kill the logging process * @param pl The piped log structure */ AP_DECLARE(void) ap_close_piped_log(piped_log *pl); /** * A function to return the read side of the piped log pipe * @param pl The piped log structure * @return The native file descriptor */ AP_DECLARE(apr_file_t *) ap_piped_log_read_fd(piped_log *pl); /** * A function to return the write side of the piped log pipe * @param pl The piped log structure * @return The native file descriptor */ AP_DECLARE(apr_file_t *) ap_piped_log_write_fd(piped_log *pl); /** * hook method to generate unique id for connection or request * @ingroup hooks * @param c the conn_rec of the connections * @param r the request_req (may be NULL) * @param id the place where to store the unique id * @return OK or DECLINE */ AP_DECLARE_HOOK(int, generate_log_id, (const conn_rec *c, const request_rec *r, const char **id)) #ifdef __cplusplus } #endif #endif /* !APACHE_HTTP_LOG_H */ /** @} */