1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 * @brief Apache Logging library
21 * @defgroup APACHE_CORE_LOG Logging library
22 * @ingroup APACHE_CORE
26 #ifndef APACHE_HTTP_LOG_H
27 #define APACHE_HTTP_LOG_H
33 #include "apr_thread_proc.h"
38 #include "http_config.h"
44 #define APLOG_EMERG LOG_EMERG /* system is unusable */
45 #define APLOG_ALERT LOG_ALERT /* action must be taken immediately */
46 #define APLOG_CRIT LOG_CRIT /* critical conditions */
47 #define APLOG_ERR LOG_ERR /* error conditions */
48 #define APLOG_WARNING LOG_WARNING /* warning conditions */
49 #define APLOG_NOTICE LOG_NOTICE /* normal but significant condition */
50 #define APLOG_INFO LOG_INFO /* informational */
51 #define APLOG_DEBUG LOG_DEBUG /* debug-level messages */
52 #define APLOG_TRACE1 (LOG_DEBUG + 1) /* trace-level 1 messages */
53 #define APLOG_TRACE2 (LOG_DEBUG + 2) /* trace-level 2 messages */
54 #define APLOG_TRACE3 (LOG_DEBUG + 3) /* trace-level 3 messages */
55 #define APLOG_TRACE4 (LOG_DEBUG + 4) /* trace-level 4 messages */
56 #define APLOG_TRACE5 (LOG_DEBUG + 5) /* trace-level 5 messages */
57 #define APLOG_TRACE6 (LOG_DEBUG + 6) /* trace-level 6 messages */
58 #define APLOG_TRACE7 (LOG_DEBUG + 7) /* trace-level 7 messages */
59 #define APLOG_TRACE8 (LOG_DEBUG + 8) /* trace-level 8 messages */
61 #define APLOG_LEVELMASK 15 /* mask off the level value */
65 #define APLOG_EMERG 0 /* system is unusable */
66 #define APLOG_ALERT 1 /* action must be taken immediately */
67 #define APLOG_CRIT 2 /* critical conditions */
68 #define APLOG_ERR 3 /* error conditions */
69 #define APLOG_WARNING 4 /* warning conditions */
70 #define APLOG_NOTICE 5 /* normal but significant condition */
71 #define APLOG_INFO 6 /* informational */
72 #define APLOG_DEBUG 7 /* debug-level messages */
73 #define APLOG_TRACE1 8 /* trace-level 1 messages */
74 #define APLOG_TRACE2 9 /* trace-level 2 messages */
75 #define APLOG_TRACE3 10 /* trace-level 3 messages */
76 #define APLOG_TRACE4 11 /* trace-level 4 messages */
77 #define APLOG_TRACE5 12 /* trace-level 5 messages */
78 #define APLOG_TRACE6 13 /* trace-level 6 messages */
79 #define APLOG_TRACE7 14 /* trace-level 7 messages */
80 #define APLOG_TRACE8 15 /* trace-level 8 messages */
82 #define APLOG_LEVELMASK 15 /* mask off the level value */
86 /* APLOG_NOERRNO is ignored and should not be used. It will be
87 * removed in a future release of Apache.
89 #define APLOG_NOERRNO (APLOG_LEVELMASK + 1)
91 /** Use APLOG_TOCLIENT on ap_log_rerror() to give content
92 * handlers the option of including the error text in the
93 * ErrorDocument sent back to the client. Setting APLOG_TOCLIENT
94 * will cause the error text to be saved in the request_rec->notes
95 * table, keyed to the string "error-notes", if and only if:
96 * - the severity level of the message is APLOG_WARNING or greater
97 * - there are no other "error-notes" set in request_rec->notes
98 * Once error-notes is set, it is up to the content handler to
99 * determine whether this text should be sent back to the client.
100 * Note: Client generated text streams sent back to the client MUST
101 * be escaped to prevent CSS attacks.
103 #define APLOG_TOCLIENT ((APLOG_LEVELMASK + 1) * 2)
105 /* normal but significant condition on startup, usually printed to stderr */
106 #define APLOG_STARTUP ((APLOG_LEVELMASK + 1) * 4)
108 #ifndef DEFAULT_LOGLEVEL
109 #define DEFAULT_LOGLEVEL APLOG_WARNING
113 * APLOG_NO_MODULE may be passed as module_index to ap_log_error() and related
114 * functions if the module causing the log message is not known. Normally this
115 * should not be used directly. Use ::APLOG_MARK or ::APLOG_MODULE_INDEX
119 * @see APLOG_MODULE_INDEX
122 #define APLOG_NO_MODULE -1
126 * C++ modules must invoke ::APLOG_USE_MODULE or ::AP_DECLARE_MODULE in
127 * every file which uses ap_log_* before the first use of ::APLOG_MARK
128 * or ::APLOG_MODULE_INDEX.
129 * (C modules *should* do that as well, to enable module-specific log
130 * levels. C modules need not obey the ordering, though).
132 #else /* __cplusplus */
134 * Constant to store module_index for the current file.
135 * Objects with static storage duration are set to NULL if not
136 * initialized explicitly. This means that if aplog_module_index
137 * is not initalized using the ::APLOG_USE_MODULE or the
138 * ::AP_DECLARE_MODULE macro, we can safely fall back to
139 * use ::APLOG_NO_MODULE. This variable will usually be optimized away.
141 static int * const aplog_module_index;
142 #endif /* __cplusplus */
145 * APLOG_MODULE_INDEX contains the module_index of the current module if
146 * it has been set via the ::APLOG_USE_MODULE or ::AP_DECLARE_MODULE macro.
147 * Otherwise it contains ::APLOG_NO_MODULE (for example in unmodified httpd
150 * If ::APLOG_MARK is used in ap_log_error() and related functions,
151 * ::APLOG_MODULE_INDEX will be passed as module_index. In cases where
152 * ::APLOG_MARK cannot be used, ::APLOG_MODULE_INDEX should normally be passed
159 #define APLOG_MODULE_INDEX (*aplog_module_index)
160 #else /* __cplusplus */
161 #define APLOG_MODULE_INDEX \
162 (aplog_module_index ? *aplog_module_index : APLOG_NO_MODULE)
163 #endif /* __cplusplus */
166 * APLOG_MAX_LOGLEVEL can be defined to remove logging above some
167 * specified level at compile time.
169 * This requires a C99 compiler.
172 #define APLOG_MAX_LOGLEVEL
174 #ifndef APLOG_MAX_LOGLEVEL
175 #define APLOG_MODULE_IS_LEVEL(s,module_index,level) \
176 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
178 (ap_get_server_module_loglevel(s, module_index) \
179 >= ((level)&APLOG_LEVELMASK) ) )
180 #define APLOG_C_MODULE_IS_LEVEL(c,module_index,level) \
181 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
182 (ap_get_conn_module_loglevel(c, module_index) \
183 >= ((level)&APLOG_LEVELMASK) ) )
184 #define APLOG_CS_MODULE_IS_LEVEL(c,s,module_index,level) \
185 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
186 (ap_get_conn_server_module_loglevel(c, s, module_index) \
187 >= ((level)&APLOG_LEVELMASK) ) )
188 #define APLOG_R_MODULE_IS_LEVEL(r,module_index,level) \
189 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
190 (ap_get_request_module_loglevel(r, module_index) \
191 >= ((level)&APLOG_LEVELMASK) ) )
193 #define APLOG_MODULE_IS_LEVEL(s,module_index,level) \
194 ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \
195 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
197 (ap_get_server_module_loglevel(s, module_index) \
198 >= ((level)&APLOG_LEVELMASK) ) ) )
199 #define APLOG_CS_MODULE_IS_LEVEL(c,s,module_index,level) \
200 ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \
201 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
202 (ap_get_conn_server_module_loglevel(c, s, module_index) \
203 >= ((level)&APLOG_LEVELMASK) ) ) )
204 #define APLOG_C_MODULE_IS_LEVEL(c,module_index,level) \
205 ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \
206 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
207 (ap_get_conn_module_loglevel(c, module_index) \
208 >= ((level)&APLOG_LEVELMASK) ) ) )
209 #define APLOG_R_MODULE_IS_LEVEL(r,module_index,level) \
210 ( (((level)&APLOG_LEVELMASK) <= APLOG_MAX_LOGLEVEL) && \
211 ( (((level)&APLOG_LEVELMASK) <= APLOG_NOTICE) || \
212 (ap_get_request_module_loglevel(r, module_index) \
213 >= ((level)&APLOG_LEVELMASK) ) ) )
216 #define APLOG_IS_LEVEL(s,level) \
217 APLOG_MODULE_IS_LEVEL(s,APLOG_MODULE_INDEX,level)
218 #define APLOG_C_IS_LEVEL(c,level) \
219 APLOG_C_MODULE_IS_LEVEL(c,APLOG_MODULE_INDEX,level)
220 #define APLOG_CS_IS_LEVEL(c,s,level) \
221 APLOG_CS_MODULE_IS_LEVEL(c,s,APLOG_MODULE_INDEX,level)
222 #define APLOG_R_IS_LEVEL(r,level) \
223 APLOG_R_MODULE_IS_LEVEL(r,APLOG_MODULE_INDEX,level)
226 #define APLOGinfo(s) APLOG_IS_LEVEL(s,APLOG_INFO)
227 #define APLOGdebug(s) APLOG_IS_LEVEL(s,APLOG_DEBUG)
228 #define APLOGtrace1(s) APLOG_IS_LEVEL(s,APLOG_TRACE1)
229 #define APLOGtrace2(s) APLOG_IS_LEVEL(s,APLOG_TRACE2)
230 #define APLOGtrace3(s) APLOG_IS_LEVEL(s,APLOG_TRACE3)
231 #define APLOGtrace4(s) APLOG_IS_LEVEL(s,APLOG_TRACE4)
232 #define APLOGtrace5(s) APLOG_IS_LEVEL(s,APLOG_TRACE5)
233 #define APLOGtrace6(s) APLOG_IS_LEVEL(s,APLOG_TRACE6)
234 #define APLOGtrace7(s) APLOG_IS_LEVEL(s,APLOG_TRACE7)
235 #define APLOGtrace8(s) APLOG_IS_LEVEL(s,APLOG_TRACE8)
237 #define APLOGrinfo(r) APLOG_R_IS_LEVEL(r,APLOG_INFO)
238 #define APLOGrdebug(r) APLOG_R_IS_LEVEL(r,APLOG_DEBUG)
239 #define APLOGrtrace1(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE1)
240 #define APLOGrtrace2(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE2)
241 #define APLOGrtrace3(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE3)
242 #define APLOGrtrace4(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE4)
243 #define APLOGrtrace5(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE5)
244 #define APLOGrtrace6(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE6)
245 #define APLOGrtrace7(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE7)
246 #define APLOGrtrace8(r) APLOG_R_IS_LEVEL(r,APLOG_TRACE8)
248 #define APLOGcinfo(c) APLOG_C_IS_LEVEL(c,APLOG_INFO)
249 #define APLOGcdebug(c) APLOG_C_IS_LEVEL(c,APLOG_DEBUG)
250 #define APLOGctrace1(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE1)
251 #define APLOGctrace2(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE2)
252 #define APLOGctrace3(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE3)
253 #define APLOGctrace4(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE4)
254 #define APLOGctrace5(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE5)
255 #define APLOGctrace6(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE6)
256 #define APLOGctrace7(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE7)
257 #define APLOGctrace8(c) APLOG_C_IS_LEVEL(c,APLOG_TRACE8)
259 extern int AP_DECLARE_DATA ap_default_loglevel;
262 * APLOG_MARK is a convenience macro for use as the first three parameters in
263 * ap_log_error() and related functions, i.e. file, line, and module_index.
265 * The module_index parameter was introduced in version 2.3.6. Before that
266 * version, APLOG_MARK only replaced the file and line parameters.
267 * This means that APLOG_MARK can be used with ap_log_*error in all versions
270 * @see APLOG_MODULE_INDEX
274 * @see ap_log_cserror
276 #define APLOG_MARK __FILE__,__LINE__,APLOG_MODULE_INDEX
279 * Set up for logging to stderr.
280 * @param p The pool to allocate out of
282 AP_DECLARE(void) ap_open_stderr_log(apr_pool_t *p);
285 * Replace logging to stderr with logging to the given file.
286 * @param p The pool to allocate out of
287 * @param file Name of the file to log stderr output
289 AP_DECLARE(apr_status_t) ap_replace_stderr_log(apr_pool_t *p,
293 * Open the error log and replace stderr with it.
294 * @param pconf Not used
295 * @param plog The pool to allocate the logs from
296 * @param ptemp Pool used for temporary allocations
297 * @param s_main The main server
298 * @note ap_open_logs isn't expected to be used by modules, it is
299 * an internal core function
301 int ap_open_logs(apr_pool_t *pconf, apr_pool_t *plog,
302 apr_pool_t *ptemp, server_rec *s_main);
305 * Perform special processing for piped loggers in MPM child
309 * @note ap_logs_child_init is not for use by modules; it is an
310 * internal core function
312 void ap_logs_child_init(apr_pool_t *p, server_rec *s);
315 * The primary logging functions, ap_log_error, ap_log_rerror, ap_log_cerror,
316 * and ap_log_perror use a printf style format string to build the log message.
317 * It is VERY IMPORTANT that you not include any raw data from the network,
318 * such as the request-URI or request header fields, within the format
319 * string. Doing so makes the server vulnerable to a denial-of-service
320 * attack and other messy behavior. Instead, use a simple format string
321 * like "%s", followed by the string containing the untrusted data.
325 * ap_log_error() - log messages which are not related to a particular
326 * request or connection. This uses a printf-like format to log messages
328 * @param file The file in which this function is called
329 * @param line The line number on which this function is called
330 * @param module_index The module_index of the module generating this message
331 * @param level The level of this error message
332 * @param status The status code from the previous command
333 * @param s The server on which we are logging
334 * @param fmt The format string
335 * @param ... The arguments to use to fill out fmt.
336 * @note ap_log_error is implemented as a macro
337 * @note Use APLOG_MARK to fill out file and line
338 * @note If a request_rec is available, use that with ap_log_rerror()
339 * in preference to calling this function. Otherwise, if a conn_rec is
340 * available, use that with ap_log_cerror() in preference to calling
342 * @warning It is VERY IMPORTANT that you not include any raw data from
343 * the network, such as the request-URI or request header fields, within
344 * the format string. Doing so makes the server vulnerable to a
345 * denial-of-service attack and other messy behavior. Instead, use a
346 * simple format string like "%s", followed by the string containing the
350 AP_DECLARE(void) ap_log_error(const char *file, int line, int module_index,
351 int level, apr_status_t status,
352 const server_rec *s, const char *fmt, ...);
354 #if __STDC_VERSION__ >= 199901L
355 /* need additional step to expand APLOG_MARK first */
356 #define ap_log_error(...) ap_log_error__(__VA_ARGS__)
357 /* need server_rec *sr = ... for the case if s is verbatim NULL */
358 #define ap_log_error__(file, line, mi, level, status, s, ...) \
359 do { const server_rec *sr = s; if (APLOG_MODULE_IS_LEVEL(sr, mi, level)) \
360 ap_log_error_(file, line, mi, level, status, sr, __VA_ARGS__); \
363 #define ap_log_error ap_log_error_
365 AP_DECLARE(void) ap_log_error_(const char *file, int line, int module_index,
366 int level, apr_status_t status,
367 const server_rec *s, const char *fmt, ...)
368 __attribute__((format(printf,7,8)));
372 * ap_log_perror() - log messages which are not related to a particular
373 * request, connection, or virtual server. This uses a printf-like
374 * format to log messages to the error_log.
375 * @param file The file in which this function is called
376 * @param line The line number on which this function is called
377 * @param module_index ignored dummy value for use by APLOG_MARK
378 * @param level The level of this error message
379 * @param status The status code from the previous command
380 * @param p The pool which we are logging for
381 * @param fmt The format string
382 * @param ... The arguments to use to fill out fmt.
383 * @note ap_log_perror is implemented as a macro
384 * @note Use APLOG_MARK to fill out file, line, and module_index
385 * @warning It is VERY IMPORTANT that you not include any raw data from
386 * the network, such as the request-URI or request header fields, within
387 * the format string. Doing so makes the server vulnerable to a
388 * denial-of-service attack and other messy behavior. Instead, use a
389 * simple format string like "%s", followed by the string containing the
393 AP_DECLARE(void) ap_log_perror(const char *file, int line, int module_index,
394 int level, apr_status_t status, apr_pool_t *p,
395 const char *fmt, ...);
397 #if __STDC_VERSION__ >= 199901L && defined(APLOG_MAX_LOGLEVEL)
398 /* need additional step to expand APLOG_MARK first */
399 #define ap_log_perror(...) ap_log_perror__(__VA_ARGS__)
400 #define ap_log_perror__(file, line, mi, level, status, p, ...) \
401 do { if ((level) <= APLOG_MAX_LOGLEVEL ) \
402 ap_log_perror_(file, line, mi, level, status, p, \
403 __VA_ARGS__); } while(0)
405 #define ap_log_perror ap_log_perror_
407 AP_DECLARE(void) ap_log_perror_(const char *file, int line, int module_index,
408 int level, apr_status_t status, apr_pool_t *p,
409 const char *fmt, ...)
410 __attribute__((format(printf,7,8)));
414 * ap_log_rerror() - log messages which are related to a particular
415 * request. This uses a printf-like format to log messages to the
417 * @param file The file in which this function is called
418 * @param line The line number on which this function is called
419 * @param module_index The module_index of the module generating this message
420 * @param level The level of this error message
421 * @param status The status code from the previous command
422 * @param r The request which we are logging for
423 * @param fmt The format string
424 * @param ... The arguments to use to fill out fmt.
425 * @note ap_log_rerror is implemented as a macro
426 * @note Use APLOG_MARK to fill out file, line, and module_index
427 * @warning It is VERY IMPORTANT that you not include any raw data from
428 * the network, such as the request-URI or request header fields, within
429 * the format string. Doing so makes the server vulnerable to a
430 * denial-of-service attack and other messy behavior. Instead, use a
431 * simple format string like "%s", followed by the string containing the
435 AP_DECLARE(void) ap_log_rerror(const char *file, int line, int module_index,
436 int level, apr_status_t status,
437 const request_rec *r, const char *fmt, ...);
439 #if __STDC_VERSION__ >= 199901L
440 /* need additional step to expand APLOG_MARK first */
441 #define ap_log_rerror(...) ap_log_rerror__(__VA_ARGS__)
442 #define ap_log_rerror__(file, line, mi, level, status, r, ...) \
443 do { if (APLOG_R_MODULE_IS_LEVEL(r, mi, level)) \
444 ap_log_rerror_(file, line, mi, level, status, r, __VA_ARGS__); \
447 #define ap_log_rerror ap_log_rerror_
449 AP_DECLARE(void) ap_log_rerror_(const char *file, int line, int module_index,
450 int level, apr_status_t status,
451 const request_rec *r, const char *fmt, ...)
452 __attribute__((format(printf,7,8)));
456 * ap_log_cerror() - log messages which are related to a particular
457 * connection. This uses a printf-like format to log messages to the
459 * @param file The file in which this function is called
460 * @param line The line number on which this function is called
461 * @param level The level of this error message
462 * @param module_index The module_index of the module generating this message
463 * @param status The status code from the previous command
464 * @param c The connection which we are logging for
465 * @param fmt The format string
466 * @param ... The arguments to use to fill out fmt.
467 * @note ap_log_cerror is implemented as a macro
468 * @note Use APLOG_MARK to fill out file, line, and module_index
469 * @note If a request_rec is available, use that with ap_log_rerror()
470 * in preference to calling this function.
471 * @warning It is VERY IMPORTANT that you not include any raw data from
472 * the network, such as the request-URI or request header fields, within
473 * the format string. Doing so makes the server vulnerable to a
474 * denial-of-service attack and other messy behavior. Instead, use a
475 * simple format string like "%s", followed by the string containing the
479 AP_DECLARE(void) ap_log_cerror(const char *file, int line, int module_index,
480 int level, apr_status_t status,
481 const conn_rec *c, const char *fmt, ...);
483 #if __STDC_VERSION__ >= 199901L
484 /* need additional step to expand APLOG_MARK first */
485 #define ap_log_cerror(...) ap_log_cerror__(__VA_ARGS__)
486 #define ap_log_cerror__(file, line, mi, level, status, c, ...) \
487 do { if (APLOG_C_MODULE_IS_LEVEL(c, mi, level)) \
488 ap_log_cerror_(file, line, mi, level, status, c, __VA_ARGS__); \
491 #define ap_log_cerror ap_log_cerror_
493 AP_DECLARE(void) ap_log_cerror_(const char *file, int line, int module_index,
494 int level, apr_status_t status,
495 const conn_rec *c, const char *fmt, ...)
496 __attribute__((format(printf,7,8)));
500 * ap_log_cserror() - log messages which are related to a particular
501 * connection and to a vhost other than c->base_server. This uses a
502 * printf-like format to log messages to the error_log.
503 * @param file The file in which this function is called
504 * @param line The line number on which this function is called
505 * @param level The level of this error message
506 * @param module_index The module_index of the module generating this message
507 * @param status The status code from the previous command
508 * @param c The connection which we are logging for
509 * @param s The server which we are logging for
510 * @param fmt The format string
511 * @param ... The arguments to use to fill out fmt.
512 * @note ap_log_cserror is implemented as a macro
513 * @note Use APLOG_MARK to fill out file, line, and module_index
514 * @note If a request_rec is available, use that with ap_log_rerror()
515 * in preference to calling this function. This function is mainly useful for
516 * modules like mod_ssl to use before the request_rec is created.
517 * @warning It is VERY IMPORTANT that you not include any raw data from
518 * the network, such as the request-URI or request header fields, within
519 * the format string. Doing so makes the server vulnerable to a
520 * denial-of-service attack and other messy behavior. Instead, use a
521 * simple format string like "%s", followed by the string containing the
525 AP_DECLARE(void) ap_log_cserror(const char *file, int line, int module_index,
526 int level, apr_status_t status,
527 const conn_rec *c, const server_rec *s,
528 const char *fmt, ...);
530 #if __STDC_VERSION__ >= 199901L
531 /* need additional step to expand APLOG_MARK first */
532 #define ap_log_cserror(...) ap_log_cserror__(__VA_ARGS__)
533 #define ap_log_cserror__(file, line, mi, level, status, c, s, ...) \
534 do { if (APLOG_CS_MODULE_IS_LEVEL(c, s, mi, level)) \
535 ap_log_cserror_(file, line, mi, level, status, c, s, \
539 #define ap_log_cserror ap_log_cserror_
541 AP_DECLARE(void) ap_log_cserror_(const char *file, int line, int module_index,
542 int level, apr_status_t status,
543 const conn_rec *c, const server_rec *s,
544 const char *fmt, ...)
545 __attribute__((format(printf,8,9)));
549 * Convert stderr to the error log
550 * @param s The current server
552 AP_DECLARE(void) ap_error_log2stderr(server_rec *s);
555 * Log the command line used to start the server.
556 * @param p The pool to use for logging
557 * @param s The server_rec whose process's command line we want to log.
558 * The command line is logged to that server's error log.
560 AP_DECLARE(void) ap_log_command_line(apr_pool_t *p, server_rec *s);
563 * Log the current pid of the parent process
564 * @param p The pool to use for processing
565 * @param fname The name of the file to log to
567 AP_DECLARE(void) ap_log_pid(apr_pool_t *p, const char *fname);
570 * Remove the pidfile.
571 * @param p The pool to use for processing
572 * @param fname The name of the pid file to remove
574 AP_DECLARE(void) ap_remove_pid(apr_pool_t *p, const char *fname);
577 * Retrieve the pid from a pidfile.
578 * @param p The pool to use for processing
579 * @param filename The name of the file containing the pid
580 * @param mypid Pointer to pid_t (valid only if return APR_SUCCESS)
582 AP_DECLARE(apr_status_t) ap_read_pid(apr_pool_t *p, const char *filename, pid_t *mypid);
584 /** @see piped_log */
585 typedef struct piped_log piped_log;
588 * Open the piped log process
589 * @param p The pool to allocate out of
590 * @param program The program to run in the logging process
591 * @return The piped log structure
592 * @note The log program is invoked as @p APR_PROGRAM_ENV,
593 * @see ap_open_piped_log_ex to modify this behavior
595 AP_DECLARE(piped_log *) ap_open_piped_log(apr_pool_t *p, const char *program);
598 * Open the piped log process specifying the execution choice for program
599 * @param p The pool to allocate out of
600 * @param program The program to run in the logging process
601 * @param cmdtype How to invoke program, e.g. APR_PROGRAM, APR_SHELLCMD_ENV, etc
602 * @return The piped log structure
604 AP_DECLARE(piped_log *) ap_open_piped_log_ex(apr_pool_t *p,
606 apr_cmdtype_e cmdtype);
609 * Close the piped log and kill the logging process
610 * @param pl The piped log structure
612 AP_DECLARE(void) ap_close_piped_log(piped_log *pl);
615 * A function to return the read side of the piped log pipe
616 * @param pl The piped log structure
617 * @return The native file descriptor
619 AP_DECLARE(apr_file_t *) ap_piped_log_read_fd(piped_log *pl);
622 * A function to return the write side of the piped log pipe
623 * @param pl The piped log structure
624 * @return The native file descriptor
626 AP_DECLARE(apr_file_t *) ap_piped_log_write_fd(piped_log *pl);
629 * hook method to log error messages
631 * @param file The file in which this function is called
632 * @param line The line number on which this function is called
633 * @param module_index The module_index of the module generating this message
634 * @param level The level of this error message
635 * @param status The status code from the previous command
636 * @param s The server which we are logging for
637 * @param r The request which we are logging for
638 * @param pool Memory pool to allocate from
639 * @param errstr message to log
641 AP_DECLARE_HOOK(void, error_log, (const char *file, int line,
642 int module_index, int level,
643 apr_status_t status, const server_rec *s,
644 const request_rec *r, apr_pool_t *pool,
648 * hook method to generate unique id for connection or request
650 * @param c the conn_rec of the connections
651 * @param r the request_req (may be NULL)
652 * @param id the place where to store the unique id
653 * @return OK or DECLINE
655 AP_DECLARE_HOOK(int, generate_log_id,
656 (const conn_rec *c, const request_rec *r, const char **id))
663 #endif /* !APACHE_HTTP_LOG_H */