log.c revision 9228509ac5da8374df4a5d50b7da139e7b31f8a3
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive/* Licensed to the Apache Software Foundation (ASF) under one or more
530eba85dbd41b8a0fa5255d3648d1440199a661slive * contributor license agreements. See the NOTICE file distributed with
e942c741056732f50da2074b36fe59805d370650slive * this work for additional information regarding copyright ownership.
5f5d1b4cc970b7f06ff8ef6526128e9a27303d88nd * The ASF licenses this file to You under the Apache License, Version 2.0
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * (the "License"); you may not use this file except in compliance with
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * the License. You may obtain a copy of the License at
db479b48bd4d75423ed4a45e15b75089d1a8ad72fielding * Unless required by applicable law or agreed to in writing, software
db479b48bd4d75423ed4a45e15b75089d1a8ad72fielding * distributed under the License is distributed on an "AS IS" BASIS,
db479b48bd4d75423ed4a45e15b75089d1a8ad72fielding * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * See the License for the specific language governing permissions and
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * limitations under the License.
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * http_log.c: Dealing with the logs and errors
d5d794fc2f4cc9ca6d6da17cfa2cdcd8d244bacdnd * Rob McCool
4e9f8c5414e5fe39b5393641533edca65f6e8b91poiriertypedef struct {
4e9f8c5414e5fe39b5393641533edca65f6e8b91poirier const char *t_name;
031bbbc0d1189b07330e38d0c126820a9ab7795egryzorint AP_DECLARE_DATA ap_default_loglevel = DEFAULT_LOGLEVEL;
fb77c505254b6e9c925e23e734463e87574f8f40kess/* track pipe handles to close in child process */
6b64034fa2a644ba291c484c0c01c7df5b8d982ckesstypedef struct read_handle_t {
fb77c505254b6e9c925e23e734463e87574f8f40kess * @brief The piped logging structure.
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * Piped logs are used to move functionality out of the main server.
fb77c505254b6e9c925e23e734463e87574f8f40kess * For example, log rotation is done with piped logs.
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /** The pool to use for the piped log */
130d299c4b2b15be45532a176604c71fdc7bea5bnd /** The pipe between the server and the logging process */
130d299c4b2b15be45532a176604c71fdc7bea5bnd /** The name of the program the logging process is running */
130d299c4b2b15be45532a176604c71fdc7bea5bnd /** The pid of the logging process */
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /** How to reinvoke program when it must be replaced */
80c4526970a11f37c0f8e3b82afdf03902dac3f3sliveAP_DECLARE(apr_file_t *) ap_piped_log_read_fd(piped_log *pl)
80c4526970a11f37c0f8e3b82afdf03902dac3f3sliveAP_DECLARE(apr_file_t *) ap_piped_log_write_fd(piped_log *pl)
003f0c9fda6664daf5092a0e42f65ede20098153slive/* clear_handle_list() is called when plog is cleared; at that
003f0c9fda6664daf5092a0e42f65ede20098153slive * point we need to forget about our old list of pipe read
6b64034fa2a644ba291c484c0c01c7df5b8d982ckess * handles. We let the plog cleanups close the actual pipes.
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive/* remember to close this handle in the child process
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * On Win32 this makes zero sense, because we don't
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * take the parent process's child procs.
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * If the win32 parent instead passed each and every
130d299c4b2b15be45532a176604c71fdc7bea5bnd * logger write handle from itself down to the child,
130d299c4b2b15be45532a176604c71fdc7bea5bnd * and the parent manages all aspects of keeping the
130d299c4b2b15be45532a176604c71fdc7bea5bnd * reliable pipe log children alive, this would still
130d299c4b2b15be45532a176604c71fdc7bea5bnd * make no sense :) Cripple it on Win32.
130d299c4b2b15be45532a176604c71fdc7bea5bndstatic void close_handle_in_child(apr_pool_t *p, apr_file_t *f)
843a03fe0b138a4c1f64cb90a014e9417ac30691fieldingAP_DECLARE(apr_status_t) ap_replace_stderr_log(apr_pool_t *p,
843a03fe0b138a4c1f64cb90a014e9417ac30691fielding const char *fname)
843a03fe0b138a4c1f64cb90a014e9417ac30691fielding char *filename = ap_server_root_relative(p, fname);
843a03fe0b138a4c1f64cb90a014e9417ac30691fielding APR_APPEND | APR_WRITE | APR_CREATE | APR_LARGEFILE,
843a03fe0b138a4c1f64cb90a014e9417ac30691fielding "%s: could not open error log file %s.",
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* This is safe provided we revert it when we are finished.
843a03fe0b138a4c1f64cb90a014e9417ac30691fielding * We don't manager the callers pool!
77ead9e0262e4f08ec336d1a65b2edef7705c839nd if ((rc = apr_file_open_stderr(&stderr_log, stderr_pool))
3770ed746d69c7a4111cba9966169bd5d7a509a6poirier if ((rc = apr_file_dup2(stderr_log, stderr_file, stderr_pool))
3770ed746d69c7a4111cba9966169bd5d7a509a6poirier * You might ponder why stderr_pool should survive?
3770ed746d69c7a4111cba9966169bd5d7a509a6poirier * The trouble is, stderr_pool may have s_main->error_log,
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * so we aren't in a position to destory stderr_pool until
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * the next recycle. There's also an apparent bug which
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * is not; if some folk decided to call this function before
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * the core open error logs hook, this pool won't survive.
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * Neither does the stderr logger, so this isn't a problem.
3770ed746d69c7a4111cba9966169bd5d7a509a6poirier /* Revert, see above */
3770ed746d69c7a4111cba9966169bd5d7a509a6poirier "unable to replace stderr with error log file");
77ead9e0262e4f08ec336d1a65b2edef7705c839ndstatic void log_child_errfn(apr_pool_t *pool, apr_status_t err,
77ead9e0262e4f08ec336d1a65b2edef7705c839nd/* Create a child process running PROGNAME with a pipe connected to
77ead9e0262e4f08ec336d1a65b2edef7705c839nd * the childs stdin. The write-end of the pipe will be placed in
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * *FPIN on successful return. If dummy_stderr is non-zero, the
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * stderr for the child will be the same as the stdout of the parent.
003f0c9fda6664daf5092a0e42f65ede20098153slive * Otherwise the child will inherit the stderr from the parent. */
313bb560bc5c323cfd40c9cad7335b4b8e060aedkessstatic int log_child(apr_pool_t *p, const char *progname,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* Child process code for 'ErrorLog "|..."';
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * may want a common framework for this, since I expect it will
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * be common for other foo-loggers to want this sort of thing...
10673857794a4b3d9568ca2d983722a87ed352f1rbowen if (((rc = apr_procattr_create(&procattr, p)) == APR_SUCCESS)
b12b918ae6baf9c5762ed61b7393d0e2198378c0nd && ((rc = apr_procattr_cmdtype_set(procattr, cmdtype)) == APR_SUCCESS)
113961f0559eb026ea0d379cb7350f82bc09d710druggeri && ((rc = apr_procattr_error_check_set(procattr, 1)) == APR_SUCCESS)
113961f0559eb026ea0d379cb7350f82bc09d710druggeri && ((rc = apr_procattr_child_errfn_set(procattr, log_child_errfn))
113961f0559eb026ea0d379cb7350f82bc09d710druggeri const char *pname;
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive procnew = (apr_proc_t *)apr_pcalloc(p, sizeof(*procnew));
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd if ((rc = apr_file_open_stdout(&errfile, p)) == APR_SUCCESS)
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive rc = apr_procattr_child_err_set(procattr, errfile, NULL);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive rc = apr_proc_create(procnew, pname, (const char * const *)args,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive apr_pool_note_subprocess(p, procnew, APR_KILL_AFTER_TIMEOUT);
1f53e295ebd19aed1767d12da7abfab9936c148cjerenkrantz /* read handle to pipe not kept open, so no need to call
9ed9eaf871c58d281af02e76125ceadb5060afa5nd * close_handle_in_child()
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive/* Open the error log for the given server_rec. If IS_MAIN is
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding * non-zero, s is the main server. */
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fieldingstatic int open_error_log(server_rec *s, int is_main, apr_pool_t *p)
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding const char *fname;
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem /* In 2.4 favor PROGRAM_ENV, accept "||prog" syntax for compatibility
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * and "|$cmd" to override the default.
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * Any 2.2 backport would continue to favor SHELLCMD_ENV so there
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * accept "||prog" to override, and "|$cmd" to ease conversion.
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem /* Spawn a new child logger. If this is the main server_rec,
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * the new child must use a dummy stderr since the current
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * stderr might be a pipe to the old logger. Otherwise, the
5528d1a30ae8560e2d7a96d734ffe31500dc6113rpluem * child inherits the parents stderr. */
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive "Couldn't start ErrorLog process '%s'.",
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive openlog(ap_server_argv0, LOG_NDELAY|LOG_CONS|LOG_PID, LOG_LOCAL7);
9970ad80054f477c708284a0d030a5bd26e412a9covener ap_log_error(APLOG_MARK, APLOG_STARTUP, APR_EBADPATH, NULL,
9970ad80054f477c708284a0d030a5bd26e412a9covener "%s: Invalid error log path %s.",
9970ad80054f477c708284a0d030a5bd26e412a9covener APR_APPEND | APR_WRITE | APR_CREATE | APR_LARGEFILE,
9970ad80054f477c708284a0d030a5bd26e412a9covener "%s: could not open error log file %s.",
b12b918ae6baf9c5762ed61b7393d0e2198378c0ndint ap_open_logs(apr_pool_t *pconf, apr_pool_t *p /* plog */,
da637bcae7b6e150470e701af29da5604a34a17erbowen /* Register to throw away the read_handles list when we
da637bcae7b6e150470e701af29da5604a34a17erbowen * cleanup plog. Upon fork() for the apache children,
da637bcae7b6e150470e701af29da5604a34a17erbowen * this read_handles list is closed so only the parent
da637bcae7b6e150470e701af29da5604a34a17erbowen * can relaunch a lost log child. These read handles
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * are always closed on exec.
7802d43d20007fa575e43b6ae77d5177ceffdb71sf * We won't care what happens to our stderr log child
7802d43d20007fa575e43b6ae77d5177ceffdb71sf * between log phases, so we don't mind losing stderr's
7802d43d20007fa575e43b6ae77d5177ceffdb71sf * read_handle a little bit early.
113961f0559eb026ea0d379cb7350f82bc09d710druggeri /* HERE we need a stdout log that outlives plog.
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * We *presume* the parent of plog is a process
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * or global pool which spans server restarts.
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * Create our stderr_pool as a child of the plog's
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * parent pool.
113961f0559eb026ea0d379cb7350f82bc09d710druggeri apr_pool_create(&stderr_p, apr_pool_parent_get(p));
113961f0559eb026ea0d379cb7350f82bc09d710druggeri /* Replace existing stderr with new log. */
113961f0559eb026ea0d379cb7350f82bc09d710druggeri rv = apr_file_dup2(stderr_log, s_main->error_log, stderr_p);
113961f0559eb026ea0d379cb7350f82bc09d710druggeri "unable to replace stderr with error_log");
113961f0559eb026ea0d379cb7350f82bc09d710druggeri /* We are done with stderr_pool, close it, killing
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * the previous generation's stderr logger
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * Now that we have dup'ed s_main->error_log to stderr_log
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * close it and set s_main->error_log to stderr_log. This avoids
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * this fd being inherited by the next piped logger who would
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * keep open the writing end of the pipe that this one uses
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * as stdin. This in turn would prevent the piped logger from
113961f0559eb026ea0d379cb7350f82bc09d710druggeri /* note that stderr may still need to be replaced with something
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * because it points to the old error log, or back to the tty
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * of the submitter.
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * XXX: This is BS - /dev/null is non-portable
113961f0559eb026ea0d379cb7350f82bc09d710druggeri * errno-as-apr_status_t is also non-portable
113961f0559eb026ea0d379cb7350f82bc09d710druggeri if (replace_stderr && freopen("/dev/null", "w", stderr) == NULL) {
113961f0559eb026ea0d379cb7350f82bc09d710druggeri ap_log_error(APLOG_MARK, APLOG_CRIT, errno, s_main,
113961f0559eb026ea0d379cb7350f82bc09d710druggeri "unable to replace stderr with /dev/null");
113961f0559eb026ea0d379cb7350f82bc09d710druggeri for (virt = s_main->next; virt; virt = virt->next) {
fb77c505254b6e9c925e23e734463e87574f8f40kess if (q == virt) {
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive apr_file_dup2(s->error_log, errfile, s->process->pool);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int cpystrn(char *buf, const char *arg, int buflen)
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_remote_address(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return apr_snprintf(buf, buflen, "%s:%d", info->c->remote_ip,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_local_address(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return apr_snprintf(buf, buflen, "%s:%d", info->c->local_ip,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_pid(const ap_errorlog_info *info, const char *arg,
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding return apr_snprintf(buf, buflen, "%" APR_PID_T_FMT, pid);
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fieldingstatic int log_tid(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive if (ap_mpm_query(AP_MPMQ_IS_THREADED, &result) == APR_SUCCESS
e4881891552e185a7408318dfc7f62ebabe73cf6niqstatic int log_ctime(const ap_errorlog_info *info, const char *arg,
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding switch (*arg) {
6e483e0b8aa3fa574288a7452221392a03e2b9a3noodl ap_recent_ctime_ex(buf, apr_time_now(), option, &time_len);
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf /* ap_recent_ctime_ex includes the trailing \0 in time_len */
6e483e0b8aa3fa574288a7452221392a03e2b9a3noodlstatic int log_loglevel(const ap_errorlog_info *info, const char *arg,
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf return cpystrn(buf, priorities[info->level].t_name, buflen);
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsfstatic int log_log_id(const ap_errorlog_info *info, const char *arg,
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf * C: log conn log_id if available,
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf * c: log conn log id if available and not a once-per-request log line
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf * else: log request log id if available
141fd59714368d3bbe3a3d8f5b8dc8a516c48f9fsf else if (info->r) {
6e483e0b8aa3fa574288a7452221392a03e2b9a3noodlstatic int log_keepalives(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return apr_snprintf(buf, buflen, "%d", info->c->keepalives);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_module_name(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return cpystrn(buf, ap_find_module_short_name(info->module_index), buflen);
898475b582dd849de5915df0f2089b72ed8b2e2bcovenerstatic int log_file_line(const ap_errorlog_info *info, const char *arg,
003f0c9fda6664daf5092a0e42f65ede20098153slive#if defined(_OSD_POSIX) || defined(WIN32) || defined(__MVS__)
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /* In OSD/POSIX, the compiler returns for __FILE__
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd * a string like: __FILE__="*POSIX(/usr/include/stdio.h)"
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd * (it even returns an absolute path for sources in
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd * the current directory). Here we try to strip this
88d86cfadffe2275a3dfb67a4d7bdc018630b661rbowen * down to the basename.
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd if (*e == ')') {
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd#else /* _OSD_POSIX || WIN32 */
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd const char *p;
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /* On Unix, __FILE__ may be an absolute path in a
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd * VPATH build. */
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd if (file[0] == '/' && (p = ap_strrchr_c(file, '/')) != NULL) {
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive#endif /*_OSD_POSIX || WIN32 */
6b64034fa2a644ba291c484c0c01c7df5b8d982ckess return apr_snprintf(buf, buflen, "%s(%d)", file, info->line);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_apr_status(const ap_errorlog_info *info, const char *arg,
313bb560bc5c323cfd40c9cad7335b4b8e060aedkessstatic int log_server_name(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return cpystrn(buf, ap_get_server_name((request_rec *)info->r), buflen);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_virtual_host(const ap_errorlog_info *info, const char *arg,
6b64034fa2a644ba291c484c0c01c7df5b8d982ckessstatic int log_table_entry(const apr_table_t *table, const char *name,
6b64034fa2a644ba291c484c0c01c7df5b8d982ckess const char *value;
88d86cfadffe2275a3dfb67a4d7bdc018630b661rbowen ap_escape_errorlog_item(scratch, value, MAX_STRING_LEN);
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cndstatic int log_header(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive return log_table_entry(info->r->headers_in, arg, buf, buflen);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_note(const ap_errorlog_info *info, const char *arg,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* XXX: maybe escaping the entry is not necessary for notes? */
313bb560bc5c323cfd40c9cad7335b4b8e060aedkess return log_table_entry(info->r->notes, arg, buf, buflen);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int log_env_var(const ap_errorlog_info *info, const char *arg,
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd return log_table_entry(info->r->subprocess_env, arg, buf, buflen);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slivestatic int core_generate_log_id(const conn_rec *c, const request_rec *r,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive const char **idstring)
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd if (r && r->request_time) {
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive apr_uintptr_t tmp2 = (apr_uintptr_t)c->current_thread;
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive len = apr_base64_encode_len(sizeof(id)); /* includes trailing \0 */
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* Skip the last char, it is always '=' */
fb77c505254b6e9c925e23e734463e87574f8f40kessstatic void add_log_id(const conn_rec *c, const request_rec *r)
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd const char **id;
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /* need to cast const away */
1b01d1ee11c612226cb3141eed4581dc179266c1rbowen ap_hook_generate_log_id(core_generate_log_id, NULL, NULL,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive ap_register_errorlog_handler(p, "a", log_remote_address, 0);
6b15044d54a096e6323ff1540f1a491e8de7622dsf ap_register_errorlog_handler(p, "A", log_local_address, 0);
6b15044d54a096e6323ff1540f1a491e8de7622dsf ap_register_errorlog_handler(p, "m", log_module_name, 0);
6b15044d54a096e6323ff1540f1a491e8de7622dsf ap_register_errorlog_handler(p, "v", log_virtual_host, 0);
6b15044d54a096e6323ff1540f1a491e8de7622dsf ap_register_errorlog_handler(p, "V", log_server_name, 0);
6b15044d54a096e6323ff1540f1a491e8de7622dsf * This is used if no error log format is defined and during startup.
6b15044d54a096e6323ff1540f1a491e8de7622dsf * It automatically omits the timestamp if logging to syslog.
6b15044d54a096e6323ff1540f1a491e8de7622dsfstatic int do_errorlog_default(const ap_errorlog_info *info, char *buf,
6b15044d54a096e6323ff1540f1a491e8de7622dsf len += log_module_name(info, NULL, buf + len, buflen - len);
6b15044d54a096e6323ff1540f1a491e8de7622dsf len += log_loglevel(info, NULL, buf + len, buflen - len);
6b15044d54a096e6323ff1540f1a491e8de7622dsf item_len = log_file_line(info, NULL, buf + len, buflen - len);
6b15044d54a096e6323ff1540f1a491e8de7622dsf item_len = log_apr_status(info, NULL, buf + len, buflen - len);
6b15044d54a096e6323ff1540f1a491e8de7622dsf * remote_ip can be client or backend server. If we have a scoreboard
6b15044d54a096e6323ff1540f1a491e8de7622dsf * handle, it is likely a client.
6b15044d54a096e6323ff1540f1a491e8de7622dsf /* the actual error message */
6b15044d54a096e6323ff1540f1a491e8de7622dsf if (apr_vsnprintf(scratch, MAX_STRING_LEN, errstr_fmt, args)) {
6b15044d54a096e6323ff1540f1a491e8de7622dsf len += apr_vsnprintf(buf + len, buflen - len, errstr_fmt, args);
fb77c505254b6e9c925e23e734463e87574f8f40kess len += cpystrn(buf + len, ", referer: ", buflen - len);
af18698b10b429b270551ca3a5d51a75e1c9db22brianp item_len = log_header(info, "Referer", buf + len, buflen - len);
fb77c505254b6e9c925e23e734463e87574f8f40kessstatic int do_errorlog_format(apr_array_header_t *fmt, ap_errorlog_info *info,
13cbe1d8f52c8097cb581e7eb259693b64d41d10poirier ap_errorlog_format_item *items = (ap_errorlog_format_item *)fmt->elts;
41ef8b3051855b802104193ee0a587515af60a37wrowe /* the actual error message */
41ef8b3051855b802104193ee0a587515af60a37wrowe if (apr_vsnprintf(scratch, MAX_STRING_LEN, err_fmt, args)) {
41ef8b3051855b802104193ee0a587515af60a37wrowe len += apr_vsnprintf(buf + len, buflen - len, err_fmt, args);
a1ef40892ffa2b44fc249423c5b6c42a74a84c68nd /* required item is empty. skip whole line */
88d86cfadffe2275a3dfb67a4d7bdc018630b661rbowen else if (item->flags & AP_ERRORLOG_FLAG_NULL_AS_HYPHEN) {
2025fe01de41805f6148851335693aa5ebe2faffndstatic void write_logline(char *errstr, apr_size_t len, apr_file_t *logf,
313bb560bc5c323cfd40c9cad7335b4b8e060aedkess /* NULL if we are logging to syslog */
41ef8b3051855b802104193ee0a587515af60a37wrowe /* Truncate for the terminator (as apr_snprintf does) */
9fb925624300c864fe3969a264e52aa83f3c2dd0slive syslog(level < LOG_PRIMASK ? level : APLOG_DEBUG, "%s", errstr);
313bb560bc5c323cfd40c9cad7335b4b8e060aedkessstatic void log_error_core(const char *file, int line, int module_index,
79c754eb51681c3389cd966753e902c429f78939trawick /* do we need to log once-per-req or once-per-conn info? */
79c754eb51681c3389cd966753e902c429f78939trawick if (r && r->connection) {
79c754eb51681c3389cd966753e902c429f78939trawick if (s == NULL) {
79c754eb51681c3389cd966753e902c429f78939trawick * If we are doing stderr logging (startup), don't log messages that are
79c754eb51681c3389cd966753e902c429f78939trawick * above the default server log level unless it is a startup/shutdown
79c754eb51681c3389cd966753e902c429f78939trawick int configured_level = r ? ap_get_request_module_loglevel(r, module_index) :
79c754eb51681c3389cd966753e902c429f78939trawick c ? ap_get_conn_server_module_loglevel(c, s, module_index) :
79c754eb51681c3389cd966753e902c429f78939trawick * If we are doing normal logging, don't log messages that are
79c754eb51681c3389cd966753e902c429f78939trawick * above the module's log level unless it is a startup/shutdown notice
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * If we are doing syslog logging, don't log messages that are
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * above the module's log level (including a startup/shutdown notice)
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive sconf = ap_get_module_config(s->module_config, &core_module);
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive if (c && !c->log_id) {
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive if (sconf->error_log_conn && sconf->error_log_conn->nelts > 0)
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* XXX: do we need separate log ids for subrequests? */
88d86cfadffe2275a3dfb67a4d7bdc018630b661rbowen if (sconf->error_log_req && sconf->error_log_req->nelts > 0)
69fba5b8aa0b0dc408f649cfdaab064ce120b05bslive * XXX: potential optimization: only create log id if %L is
69fba5b8aa0b0dc408f649cfdaab064ce120b05bslive * XXX: actually used
88d86cfadffe2275a3dfb67a4d7bdc018630b661rbowen info.startup = ((level & APLOG_STARTUP) == APLOG_STARTUP);
f7fe99050600166042c04b8e595fb75499eed7f0geoff /* XXX: potential optimization: format common prefixes only once */
f7fe99050600166042c04b8e595fb75499eed7f0geoff /* once-per-connection info */
f7fe99050600166042c04b8e595fb75499eed7f0geoff lines = (apr_array_header_t **)sconf->error_log_conn->elts;
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* this is the last line of once-per-connection info */
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* once-per-request info */
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive lines = (apr_array_header_t **)sconf->error_log_req->elts;
fb77c505254b6e9c925e23e734463e87574f8f40kess /* this is the last line of once-per-request info */
69fba5b8aa0b0dc408f649cfdaab064ce120b05bslive /* the actual error message */
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * prepare and log one line
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive len += do_errorlog_format(log_format, &info, errstr + len,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive len += do_errorlog_default(&info, errstr + len, MAX_STRING_LEN - len,
c68acc9d712af079afa2bd1a5a4aeef9a3ea573ckess * Don't log empty lines. This can happen with once-per-conn/req
fb109b84906e3ee61680aa289953c2f9e859354erbowen * info if an item with AP_ERRORLOG_FLAG_REQUIRED is NULL.
960188481b7025ac8ef7221b67af83dd27e46cd0rjung /* only pass the real error string to the hook */
fb109b84906e3ee61680aa289953c2f9e859354erbowen ap_run_error_log(file, line, module_index, level, status, s, r, pool,
80c4526970a11f37c0f8e3b82afdf03902dac3f3sliveAP_DECLARE(void) ap_log_error_(const char *file, int line, int module_index,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive log_error_core(file, line, module_index, level, status, s, NULL, NULL,
80c4526970a11f37c0f8e3b82afdf03902dac3f3sliveAP_DECLARE(void) ap_log_perror_(const char *file, int line, int module_index,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive const char *fmt, ...)
d950cf9262224a223e2ff5c51393708071e14b94covener log_error_core(file, line, module_index, level, status, NULL, NULL, NULL,
80c4526970a11f37c0f8e3b82afdf03902dac3f3sliveAP_DECLARE(void) ap_log_rerror_(const char *file, int line, int module_index,
2851546ce44280e54301016a7e92b00a87745509sf log_error_core(file, line, module_index, level, status, r->server, NULL, r,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * IF APLOG_TOCLIENT is set,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * AND the error level is 'warning' or more severe,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * AND there isn't already error text associated with this request,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * THEN make the message text available to ErrorDocument and
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * other error processors.
e302f38fd646764ce1a1e1c578d794aef514a9e5sfAP_DECLARE(void) ap_log_cserror_(const char *file, int line, int module_index,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf const char *fmt, ...)
e302f38fd646764ce1a1e1c578d794aef514a9e5sf log_error_core(file, line, module_index, level, status, s, c,
e302f38fd646764ce1a1e1c578d794aef514a9e5sfAP_DECLARE(void) ap_log_cerror_(const char *file, int line, int module_index,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf log_error_core(file, line, module_index, level, status, c->base_server, c,
b5c4b00201fdc3ed11c6cc05cf3f9a7912ac0cfbsfAP_DECLARE(void) ap_log_command_line(apr_pool_t *plog, server_rec *s)
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen /* Piece together the command line from the pieces
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen * in process->argv, with spaces in between.
b89fea36d9c12cec3344576824f4e6798da90ad4rbowenAP_DECLARE(void) ap_log_pid(apr_pool_t *p, const char *filename)
e302f38fd646764ce1a1e1c578d794aef514a9e5sf const char *fname;
2a781ea98a32c069ae57a89566ee9628e19a2ec2minfrin ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, APR_EBADPATH,
2d391792b33e3c27e070739f74d74989c77fea8eminfrin NULL, "Invalid PID file path %s, ignoring.", filename);
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen && apr_stat(&finfo, fname, APR_FINFO_MTIME, p) == APR_SUCCESS) {
0b5f11662dee7135ff8dd04311a4ee6df7fe2b1crbowen /* AP_SIG_GRACEFUL and HUP call this on each restart.
4497075b5e08b0c8ee89425a1758258ae80550fcsf * Only warn on first time through for this pid.
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * XXX: Could just write first time through too, although
e302f38fd646764ce1a1e1c578d794aef514a9e5sf * that may screw up scripts written to do something
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen * based on the last modification time of the pid file.
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen "pid file %s overwritten -- Unclean "
0b5f11662dee7135ff8dd04311a4ee6df7fe2b1crbowen "shutdown of previous Apache run?",
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen "%s: could not log pid to file %s",
e302f38fd646764ce1a1e1c578d794aef514a9e5sf apr_file_printf(pid_file, "%" APR_PID_T_FMT APR_EOL_STR, mypid);
e302f38fd646764ce1a1e1c578d794aef514a9e5sfAP_DECLARE(apr_status_t) ap_read_pid(apr_pool_t *p, const char *filename,
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen const apr_size_t BUFFER_SIZE = sizeof(long) * 3 + 2; /* see apr_ltoa */
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen const char *fname;
b89fea36d9c12cec3344576824f4e6798da90ad4rbowen ap_log_error(APLOG_MARK, APLOG_STARTUP|APLOG_CRIT, APR_EBADPATH,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf rv = apr_file_open(&pid_file, fname, APR_READ, APR_OS_DEFAULT, p);
9228509ac5da8374df4a5d50b7da139e7b31f8a3sf rv = apr_file_read_full(pid_file, buf, BUFFER_SIZE - 1, &bytes_read);
9228509ac5da8374df4a5d50b7da139e7b31f8a3sf /* If we fill the buffer, we're probably reading a corrupt pid file.
9228509ac5da8374df4a5d50b7da139e7b31f8a3sf * To be nice, let's also ensure the first char is a digit. */
e302f38fd646764ce1a1e1c578d794aef514a9e5sf if (bytes_read == 0 || bytes_read == BUFFER_SIZE - 1 || !apr_isdigit(*buf)) {
e302f38fd646764ce1a1e1c578d794aef514a9e5sfAP_DECLARE(void) ap_log_assert(const char *szExp, const char *szFile,
e302f38fd646764ce1a1e1c578d794aef514a9e5sf "[%s] file %s, line %d, assertion \"%s\" failed",
abdaaa23d72ef7e7ff91eab9c5581d40130680c1rbowen#if defined(WIN32)
abdaaa23d72ef7e7ff91eab9c5581d40130680c1rbowen /* unix assert does an abort leading to a core dump */
abdaaa23d72ef7e7ff91eab9c5581d40130680c1rbowen/* piped log support */
e302f38fd646764ce1a1e1c578d794aef514a9e5sf/* forward declaration */
e302f38fd646764ce1a1e1c578d794aef514a9e5sfstatic void piped_log_maintenance(int reason, void *data, apr_wait_t status);
e302f38fd646764ce1a1e1c578d794aef514a9e5sf/* Spawn the piped logger process pl->program. */
e302f38fd646764ce1a1e1c578d794aef514a9e5sf if (((status = apr_procattr_create(&procattr, pl->p)) != APR_SUCCESS) ||
e302f38fd646764ce1a1e1c578d794aef514a9e5sf ((status = apr_procattr_dir_set(procattr, ap_server_root))
e302f38fd646764ce1a1e1c578d794aef514a9e5sf ((status = apr_procattr_cmdtype_set(procattr, pl->cmdtype))
031bbbc0d1189b07330e38d0c126820a9ab7795egryzor ((status = apr_procattr_child_errfn_set(procattr, log_child_errfn))
a8ee031b2224ce5473826c9d4f603681589245fawrowe ((status = apr_procattr_error_check_set(procattr, 1)) != APR_SUCCESS)) {
a8ee031b2224ce5473826c9d4f603681589245fawrowe /* Something bad happened, give up and go away. */
a8ee031b2224ce5473826c9d4f603681589245fawrowe "piped_log_spawn: unable to setup child process '%s': %s",
a8ee031b2224ce5473826c9d4f603681589245fawrowe const char *pname;
a8ee031b2224ce5473826c9d4f603681589245fawrowe status = apr_proc_create(procnew, pname, (const char * const *) args,
a8ee031b2224ce5473826c9d4f603681589245fawrowe /* procnew->in was dup2'd from pl->write_fd;
a8ee031b2224ce5473826c9d4f603681589245fawrowe * since the original fd is still valid, close the copy to
a8ee031b2224ce5473826c9d4f603681589245fawrowe * avoid a leak. */
34b157732214cedcd129cd9fe7c4290757505d60minfrin apr_proc_other_child_register(procnew, piped_log_maintenance, pl,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* Something bad happened, give up and go away. */
003f0c9fda6664daf5092a0e42f65ede20098153slive "unable to start piped log program '%s': %s",
a5f060e0c74a44cb8896ae794c08f94f7c9a46a7covener pl->program, apr_strerror(status, buf, sizeof(buf)));
fec106c7688e279dfde4403bc3c935fec97c1d62sfstatic void piped_log_maintenance(int reason, void *data, apr_wait_t status)
fb77c505254b6e9c925e23e734463e87574f8f40kess pl->pid = NULL; /* in case we don't get it going again, this
fb77c505254b6e9c925e23e734463e87574f8f40kess * tells other logic not to try to kill it
530eba85dbd41b8a0fa5255d3648d1440199a661slive "can't query MPM state; not restarting "
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive "piped log program '%s'",
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd "piped log program '%s' failed unexpectedly",
fb77c505254b6e9c925e23e734463e87574f8f40kess /* what can we do? This could be the error log we're having
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * problems opening up... */
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd "piped_log_maintenance: unable to respawn '%s': %s",
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd /* We should not kill off the pipe here, since it may only be full.
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * If it really is locked, we should kill it off manually. */
a5f060e0c74a44cb8896ae794c08f94f7c9a46a7covenerstatic apr_status_t piped_log_cleanup_for_exec(void *data)
6b64034fa2a644ba291c484c0c01c7df5b8d982ckessAP_DECLARE(piped_log *) ap_open_piped_log_ex(apr_pool_t *p,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive const char *program,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive#else /* !AP_HAVE_RELIABLE_PIPED_LOGS */
313bb560bc5c323cfd40c9cad7335b4b8e060aedkessAP_DECLARE(piped_log *) ap_open_piped_log_ex(apr_pool_t *p,
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive const char *program,
003f0c9fda6664daf5092a0e42f65ede20098153slive "Couldn't start piped log process '%s'.",
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd apr_pool_cleanup_register(p, pl, piped_log_cleanup, piped_log_cleanup);
313bb560bc5c323cfd40c9cad7335b4b8e060aedkessAP_DECLARE(piped_log *) ap_open_piped_log(apr_pool_t *p,
313bb560bc5c323cfd40c9cad7335b4b8e060aedkess const char *program)
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive /* In 2.4 favor PROGRAM_ENV, accept "||prog" syntax for compatibility
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * and "|$cmd" to override the default.
80c4526970a11f37c0f8e3b82afdf03902dac3f3slive * Any 2.2 backport would continue to favor SHELLCMD_ENV so there
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding * accept "||prog" to override, and "|$cmd" to ease conversion.
b24c77ceb4cea5ffa92536e19f0aa83608960dc4fielding apr_pool_cleanup_run(pl->p, pl, piped_log_cleanup);
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cndAP_DECLARE(const char *) ap_parse_log_level(const char *str, int *val)
a7f40ca49262952d6dd69d021cf5b0c2b452ae4cnd char *err = "Log level keyword must be one of emerg/alert/crit/error/warn/"
7654193c1faf603feec999850322ad79e6c551bcnd (const char *file, int line, int module_index, int level,
439acee10571861c670c438038a62f90a08bf137covener const char **id),