1 const char errlog_rcs[] = "$Id: errlog.c,v 1.57 2007/10/27 13:02:26 fabiankeil Exp $";
2 /*********************************************************************
4 * File : $Source: /cvsroot/ijbswa/current/errlog.c,v $
6 * Purpose : Log errors to a designated destination in an elegant,
9 * Copyright : Written by and Copyright (C) 2001-2007 the SourceForge
10 * Privoxy team. http://www.privoxy.org/
12 * Based on the Internet Junkbuster originally written
13 * by and Copyright (C) 1997 Anonymous Coders and
14 * Junkbusters Corporation. http://www.junkbusters.com
16 * This program is free software; you can redistribute it
17 * and/or modify it under the terms of the GNU General
18 * Public License as published by the Free Software
19 * Foundation; either version 2 of the License, or (at
20 * your option) any later version.
22 * This program is distributed in the hope that it will
23 * be useful, but WITHOUT ANY WARRANTY; without even the
24 * implied warranty of MERCHANTABILITY or FITNESS FOR A
25 * PARTICULAR PURPOSE. See the GNU General Public
26 * License for more details.
28 * The GNU General Public License should be included with
29 * this file. If not, you can view it at
30 * http://www.gnu.org/copyleft/gpl.html
31 * or write to the Free Software Foundation, Inc., 59
32 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
36 * Revision 1.57 2007/10/27 13:02:26 fabiankeil
37 * Relocate daemon-mode-related log messages to make sure
38 * they aren't shown again in case of configuration reloads.
40 * Revision 1.56 2007/10/14 14:26:56 fabiankeil
41 * Remove the old log_error() version.
43 * Revision 1.55 2007/10/14 14:12:41 fabiankeil
44 * When in daemon mode, close stderr after the configuration file has been
45 * parsed the first time. If logfile isn't set, stop logging. Fixes BR#897436.
47 * Revision 1.54 2007/09/22 16:15:34 fabiankeil
48 * - Let it compile with pcc.
49 * - Move our includes below system includes to prevent macro conflicts.
51 * Revision 1.53 2007/08/05 13:53:14 fabiankeil
52 * #1763173 from Stefan Huehner: declare some more functions
53 * static and use void instead of empty parameter lists.
55 * Revision 1.52 2007/07/14 07:28:47 fabiankeil
56 * Add translation function for JB_ERR_FOO codes.
58 * Revision 1.51 2007/05/11 11:51:34 fabiankeil
59 * Fix a type mismatch warning.
61 * Revision 1.50 2007/04/11 10:55:44 fabiankeil
62 * Enforce some assertions that could be triggered
63 * on mingw32 and other systems where we use threads
66 * Revision 1.49 2007/04/08 16:44:15 fabiankeil
67 * We need <sys/time.h> for gettimeofday(), not <time.h>.
69 * Revision 1.48 2007/03/31 13:33:28 fabiankeil
70 * Add alternative log_error() with timestamps
71 * that contain milliseconds and without using
72 * strcpy(), strcat() or sprintf().
74 * Revision 1.47 2006/11/28 15:25:15 fabiankeil
75 * Only unlink the pidfile if it's actually used.
77 * Revision 1.46 2006/11/13 19:05:51 fabiankeil
78 * Make pthread mutex locking more generic. Instead of
79 * checking for OSX and OpenBSD, check for FEATURE_PTHREAD
80 * and use mutex locking unless there is an _r function
81 * available. Better safe than sorry.
83 * Fixes "./configure --disable-pthread" and should result
84 * in less threading-related problems on pthread-using platforms,
85 * but it still doesn't fix BR#1122404.
87 * Revision 1.45 2006/08/21 11:15:54 david__schmidt
88 * MS Visual C++ build updates
90 * Revision 1.44 2006/08/18 16:03:16 david__schmidt
91 * Tweak for OS/2 build happiness.
93 * Revision 1.43 2006/08/03 02:46:41 david__schmidt
94 * Incorporate Fabian Keil's patch work:
95 * http://www.fabiankeil.de/sourcecode/privoxy/
97 * Revision 1.42 2006/07/18 14:48:46 david__schmidt
98 * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
99 * with what was really the latest development (the v_3_0_branch branch)
101 * Revision 1.40.2.4 2005/04/03 20:10:50 david__schmidt
102 * Thanks to Jindrich Makovicka for a race condition fix for the log
103 * file. The race condition remains for non-pthread implementations.
104 * Reference patch #1175720.
106 * Revision 1.40.2.3 2003/03/07 03:41:04 david__schmidt
107 * Wrapping all *_r functions (the non-_r versions of them) with mutex
108 * semaphores for OSX. Hopefully this will take care of all of those pesky
111 * Revision 1.40.2.2 2002/09/28 00:30:57 david__schmidt
112 * Update error logging to give sane values for thread IDs on Mach kernels.
113 * It's still a hack, but at least it looks farily normal. We print the
114 * absolute value of the first 4 bytes of the pthread_t modded with 1000.
116 * Revision 1.40.2.1 2002/09/25 12:47:42 oes
117 * Make log_error safe against NULL string arguments
119 * Revision 1.40 2002/05/22 01:27:27 david__schmidt
121 * Add os2_socket_strerr mirroring w32_socket_strerr.
123 * Revision 1.39 2002/04/03 17:15:27 gliptak
124 * zero padding thread ids in log
126 * Revision 1.38 2002/03/31 17:18:59 jongfoster
127 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
129 * Revision 1.37 2002/03/27 14:32:43 david__schmidt
130 * More compiler warning message maintenance
132 * Revision 1.36 2002/03/26 22:29:54 swa
133 * we have a new homepage!
135 * Revision 1.35 2002/03/24 15:23:33 jongfoster
138 * Revision 1.34 2002/03/24 13:25:43 swa
139 * name change related issues
141 * Revision 1.33 2002/03/13 00:27:04 jongfoster
144 * Revision 1.32 2002/03/07 03:46:17 oes
145 * Fixed compiler warnings
147 * Revision 1.31 2002/03/06 23:02:57 jongfoster
150 * Revision 1.30 2002/03/05 22:43:45 david__schmidt
151 * - Better error reporting on OS/2
152 * - Fix double-slash comment (oops)
154 * Revision 1.29 2002/03/04 23:45:13 jongfoster
155 * Printing thread ID if using Win32 native threads
157 * Revision 1.28 2002/03/04 17:59:59 oes
158 * Deleted deletePidFile(), cosmetics
160 * Revision 1.27 2002/03/04 02:08:01 david__schmidt
161 * Enable web editing of actions file on OS/2 (it had been broken all this time!)
163 * Revision 1.26 2002/01/09 19:05:45 steudten
164 * Fix big memory leak.
166 * Revision 1.25 2002/01/09 14:32:08 oes
167 * Added support for gmtime_r and localtime_r.
169 * Revision 1.24 2001/12/30 14:07:32 steudten
170 * - Add signal handling (unix)
171 * - Add SIGHUP handler (unix)
172 * - Add creation of pidfile (unix)
173 * - Add action 'top' in rc file (RH)
174 * - Add entry 'SIGNALS' to manpage
175 * - Add exit message to logfile (unix)
177 * Revision 1.23 2001/11/07 00:02:13 steudten
178 * Add line number in error output for lineparsing for
179 * actionsfile and configfile.
180 * Special handling for CLF added.
182 * Revision 1.22 2001/11/05 23:43:05 steudten
183 * Add time+date to log files.
185 * Revision 1.21 2001/10/25 03:40:47 david__schmidt
186 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
187 * threads to call select() simultaneously. So, it's time to do a real, live,
188 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
189 * (native). Both versions will work, but using __OS2__ offers multi-threading.
191 * Revision 1.20 2001/09/16 23:04:34 jongfoster
194 * Revision 1.19 2001/09/13 20:08:06 jongfoster
195 * Adding support for LOG_LEVEL_CGI
197 * Revision 1.18 2001/09/10 11:27:24 oes
198 * Declaration of w32_socket_strerr now conditional
200 * Revision 1.17 2001/09/10 10:17:13 oes
201 * Removed unused variable; Fixed sprintf format
203 * Revision 1.16 2001/07/30 22:08:36 jongfoster
204 * Tidying up #defines:
205 * - All feature #defines are now of the form FEATURE_xxx
206 * - Permanently turned off WIN_GUI_EDIT
207 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
209 * Revision 1.15 2001/07/29 17:41:10 jongfoster
210 * Now prints thread ID for each message (pthreads only)
212 * Revision 1.14 2001/07/19 19:03:48 haroon
213 * - Added case for LOG_LEVEL_POPUPS
215 * Revision 1.13 2001/07/13 13:58:58 oes
216 * - Added case for LOG_LEVEL_DEANIMATE
217 * - Removed all #ifdef PCRS
219 * Revision 1.12 2001/06/09 10:55:28 jongfoster
220 * Changing BUFSIZ ==> BUFFER_SIZE
222 * Revision 1.11 2001/06/01 18:14:49 jongfoster
223 * Changing the calls to strerr() to check HAVE_STRERR (which is defined
224 * in config.h if appropriate) rather than the NO_STRERR macro.
226 * Revision 1.10 2001/05/29 11:52:21 oes
227 * Conditional compilation of w32_socket_error
229 * Revision 1.9 2001/05/28 16:15:17 jongfoster
230 * Improved reporting of errors under Win32.
232 * Revision 1.8 2001/05/26 17:25:14 jongfoster
233 * Added support for CLF (Common Log Format) and fixed LOG_LEVEL_LOG
235 * Revision 1.7 2001/05/26 15:21:28 jongfoster
236 * Activity animation in Win32 GUI now works even if debug==0
238 * Revision 1.6 2001/05/25 21:55:08 jongfoster
239 * Now cleans up properly on FATAL (removes taskbar icon etc)
241 * Revision 1.5 2001/05/22 18:46:04 oes
243 * - Enabled filtering banners by size rather than URL
244 * by adding patterns that replace all standard banner
245 * sizes with the "Junkbuster" gif to the re_filterfile
247 * - Enabled filtering WebBugs by providing a pattern
248 * which kills all 1x1 images
250 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
251 * which is selected by the (nonstandard and therefore
252 * capital) letter 'U' in the option string.
253 * It causes the quantifiers to be ungreedy by default.
254 * Appending a ? turns back to greedy (!).
256 * - Added a new interceptor ijb-send-banner, which
257 * sends back the "Junkbuster" gif. Without imagelist or
258 * MSIE detection support, or if tinygif = 1, or the
259 * URL isn't recognized as an imageurl, a lame HTML
260 * explanation is sent instead.
262 * - Added new feature, which permits blocking remote
263 * script redirects and firing back a local redirect
265 * The feature is conditionally compiled, i.e. it
266 * can be disabled with --disable-fast-redirects,
267 * plus it must be activated by a "fast-redirects"
268 * line in the config file, has its own log level
269 * and of course wants to be displayed by show-proxy-args
270 * Note: Boy, all the #ifdefs in 1001 locations and
271 * all the fumbling with configure.in and acconfig.h
272 * were *way* more work than the feature itself :-(
274 * - Because a generic redirect template was needed for
275 * this, tinygif = 3 now uses the same.
277 * - Moved GIFs, and other static HTTP response templates
282 * - Removed some >400 CRs again (Jon, you really worked
285 * Revision 1.4 2001/05/21 19:32:54 jongfoster
286 * Added another #ifdef _WIN_CONSOLE
288 * Revision 1.3 2001/05/20 01:11:40 jongfoster
289 * Added support for LOG_LEVEL_FATAL
290 * Renamed LOG_LEVEL_FRC to LOG_LEVEL_FORCE,
291 * and LOG_LEVEL_REF to LOG_LEVEL_RE_FILTER
293 * Revision 1.2 2001/05/17 22:42:01 oes
294 * - Cleaned CRLF's from the sources and related files
295 * - Repaired logging for REF and FRC
297 * Revision 1.1.1.1 2001/05/15 13:58:51 oes
298 * Initial import of version 2.9.3 source tree
301 *********************************************************************/
310 #include "miscutil.h"
312 /* For gettimeofday() */
313 #include <sys/time.h>
315 #if !defined(_WIN32) && !defined(__OS2__)
317 #endif /* !defined(_WIN32) && !defined(__OS2__) */
329 #endif /* ndef _WIN_CONSOLE */
330 #endif /* def _WIN32 */
332 #define inline __inline
333 #endif /* def _MSC_VER */
336 #include <sys/socket.h> /* For sock_errno */
345 const char errlog_h_rcs[] = ERRLOG_H_VERSION;
349 * LOG_LEVEL_FATAL cannot be turned off. (There are
350 * some exceptional situations where we need to get a
351 * message to the user).
353 #define LOG_LEVEL_MINIMUM LOG_LEVEL_FATAL
355 /* where to log (default: stderr) */
356 static FILE *logfp = NULL;
358 /* logging detail level. */
359 int debug = (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR | LOG_LEVEL_INFO);
361 /* static functions */
362 static void fatal_error(const char * error_message);
364 static char *w32_socket_strerr(int errcode, char *tmp_buf);
367 static char *os2_socket_strerr(int errcode, char *tmp_buf);
370 #ifdef FEATURE_PTHREAD
371 static inline void lock_logfile(void)
373 pthread_mutex_lock(&log_mutex);
375 static inline void unlock_logfile(void)
377 pthread_mutex_unlock(&log_mutex);
379 static inline void lock_loginit(void)
381 pthread_mutex_lock(&log_init_mutex);
383 static inline void unlock_loginit(void)
385 pthread_mutex_unlock(&log_init_mutex);
387 #else /* ! FEATURE_PTHREAD */
389 * FIXME we need a cross-platform locking mechanism.
390 * The locking/unlocking functions below should be
391 * fleshed out for non-pthread implementations.
393 static inline void lock_logfile() {}
394 static inline void unlock_logfile() {}
395 static inline void lock_loginit() {}
396 static inline void unlock_loginit() {}
399 /*********************************************************************
401 * Function : fatal_error
403 * Description : Displays a fatal error to standard error (or, on
404 * a WIN32 GUI, to a dialog box), and exits
405 * JunkBuster with status code 1.
408 * 1 : error_message = The error message to display.
410 * Returns : Does not return.
412 *********************************************************************/
413 static void fatal_error(const char * error_message)
415 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
416 MessageBox(g_hwndLogFrame, error_message, "Privoxy Error",
417 MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST);
419 /* Cleanup - remove taskbar icon etc. */
422 #else /* if !defined(_WIN32) || defined(_WIN_CONSOLE) */
423 fputs(error_message, logfp);
424 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
437 /*********************************************************************
439 * Function : show_version
441 * Description : Logs the Privoxy version and the program name.
444 * 1 : prog_name = The program name.
448 *********************************************************************/
449 static void show_version(const char *prog_name)
451 log_error(LOG_LEVEL_INFO, "Privoxy version " VERSION);
452 if (prog_name != NULL)
454 log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name);
459 /*********************************************************************
461 * Function : init_log_module
463 * Description : Initializes the logging module to log to stderr.
464 * Can only be called while stderr hasn't been closed
465 * yet and is only supposed to be called once.
468 * 1 : prog_name = The program name.
472 *********************************************************************/
473 void init_log_module(const char *prog_name)
478 set_debug_level(debug);
479 show_version(prog_name);
483 /*********************************************************************
485 * Function : set_debug_level
487 * Description : Sets the debug level to the provided value
488 * plus LOG_LEVEL_MINIMUM.
490 * XXX: we should only use the LOG_LEVEL_MINIMUM
491 * until the frist time the configuration file has
494 * Parameters : 1: debug_level = The debug level to set.
498 *********************************************************************/
499 void set_debug_level(int debug_level)
501 debug = debug_level | LOG_LEVEL_MINIMUM;
505 /*********************************************************************
507 * Function : disable_logging
509 * Description : Disables logging.
515 *********************************************************************/
516 void disable_logging(void)
521 log_error(LOG_LEVEL_INFO, "No logfile configured. Logging disabled.");
529 /*********************************************************************
531 * Function : init_error_log
533 * Description : Initializes the logging module to log to a file.
535 * XXX: should be renamed.
538 * 1 : prog_name = The program name.
539 * 2 : logfname = The logfile name, or NULL for stderr.
540 * 3 : debuglevel = The debugging level.
544 *********************************************************************/
545 void init_error_log(const char *prog_name, const char *logfname)
549 assert(NULL != logfname);
556 log_error(LOG_LEVEL_INFO,
557 "Switching to daemon mode. Log messages will be written to: %s", logfname);
559 else if (logfp != NULL)
561 log_error(LOG_LEVEL_INFO, "(Re-)Open logfile \'%s\'", logfname ? logfname : "none");
564 /* set the designated log file */
565 fp = fopen(logfname, "a");
568 log_error(LOG_LEVEL_FATAL, "init_error_log(): can't open logfile: \'%s\'", logfname);
571 /* set logging to be completely unbuffered */
581 show_version(prog_name);
585 } /* init_error_log */
588 /*********************************************************************
590 * Function : get_thread_id
592 * Description : Returns a number that is different for each thread.
594 * XXX: Should be moved elsewhere (miscutil.c?)
598 * Returns : thread_id
600 *********************************************************************/
601 static long get_thread_id(void)
603 long this_thread = 1; /* was: pthread_t this_thread;*/
607 APIRET ulrc; /* XXX: I have no clue what this does */
610 /* FIXME get current thread id */
611 #ifdef FEATURE_PTHREAD
612 this_thread = (long)pthread_self();
615 * Mac OSX (and perhaps other Mach instances) doesn't have a debuggable
616 * value at the first 4 bytes of pthread_self()'s return value, a pthread_t.
617 * pthread_t is supposed to be opaque... but it's fairly random, though, so
618 * we make it mostly presentable.
620 this_thread = abs(this_thread % 1000);
621 #endif /* def __MACH__ */
622 #elif defined(_WIN32)
623 this_thread = GetCurrentThreadId();
624 #elif defined(__OS2__)
625 ulrc = DosGetInfoBlocks(&ptib, NULL);
627 this_thread = ptib -> tib_ptib2 -> tib2_ultid;
628 #endif /* def FEATURE_PTHREAD */
634 /*********************************************************************
636 * Function : get_log_timestamp
638 * Description : Generates the time stamp for the log message prefix.
641 * 1 : buffer = Storage buffer
642 * 2 : buffer_size = Size of storage buffer
644 * Returns : Number of written characters or 0 for error.
646 *********************************************************************/
647 static inline size_t get_log_timestamp(char *buffer, size_t buffer_size)
652 struct timeval tv_now; /* XXX: stupid name */
654 int msecs_length = 0;
656 gettimeofday(&tv_now, NULL);
657 msecs = tv_now.tv_usec / 1000;
661 #ifdef HAVE_LOCALTIME_R
662 tm_now = *localtime_r(&now, &tm_now);
663 #elif FEATURE_PTHREAD
664 pthread_mutex_lock(&localtime_mutex);
665 tm_now = *localtime(&now);
666 pthread_mutex_unlock(&localtime_mutex);
668 tm_now = *localtime(&now);
671 length = strftime(buffer, buffer_size, "%b %d %H:%M:%S", &tm_now);
674 msecs_length = snprintf(buffer+length, buffer_size - length, ".%.3ld", msecs);
676 if (msecs_length > 0)
678 length += (size_t)msecs_length;
689 /*********************************************************************
691 * Function : get_clf_timestamp
693 * Description : Generates a Common Log Format time string.
696 * 1 : buffer = Storage buffer
697 * 2 : buffer_size = Size of storage buffer
699 * Returns : Number of written characters or 0 for error.
701 *********************************************************************/
702 static inline size_t get_clf_timestamp(char *buffer, size_t buffer_size)
705 * Complex because not all OSs have tm_gmtoff or
706 * the %z field in strftime()
711 #ifdef HAVE_LOCALTIME_R
720 gmt = *gmtime_r(&now, &gmt);
721 #elif FEATURE_PTHREAD
722 pthread_mutex_lock(&gmtime_mutex);
724 pthread_mutex_unlock(&gmtime_mutex);
728 #ifdef HAVE_LOCALTIME_R
729 tm_now = localtime_r(&now, &dummy);
730 #elif FEATURE_PTHREAD
731 pthread_mutex_lock(&localtime_mutex);
732 tm_now = localtime(&now);
733 pthread_mutex_unlock(&localtime_mutex);
735 tm_now = localtime(&now);
737 days = tm_now->tm_yday - gmt.tm_yday;
738 hrs = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + tm_now->tm_hour - gmt.tm_hour);
739 mins = hrs * 60 + tm_now->tm_min - gmt.tm_min;
741 length = strftime(buffer, buffer_size, "%d/%b/%Y:%H:%M:%S ", tm_now);
745 tz_length = snprintf(buffer+length, buffer_size-length,
746 "%+03d%02d", mins / 60, abs(mins) % 60);
750 length += (size_t)tz_length;
761 /*********************************************************************
763 * Function : get_log_level_string
765 * Description : Translates a numerical loglevel into a string.
768 * 1 : loglevel = LOG_LEVEL_FOO
770 * Returns : Log level string.
772 *********************************************************************/
773 static inline const char *get_log_level_string(int loglevel)
775 char *log_level_string = NULL;
777 assert(0 < loglevel);
781 case LOG_LEVEL_ERROR:
782 log_level_string = "Error";
784 case LOG_LEVEL_FATAL:
785 log_level_string = "Fatal error";
788 log_level_string = "Request";
790 case LOG_LEVEL_CONNECT:
791 log_level_string = "Connect";
794 log_level_string = "Writing";
796 case LOG_LEVEL_HEADER:
797 log_level_string = "Header";
800 log_level_string = "Info";
802 case LOG_LEVEL_RE_FILTER:
803 log_level_string = "Re-Filter";
805 #ifdef FEATURE_FORCE_LOAD
806 case LOG_LEVEL_FORCE:
807 log_level_string = "Force";
809 #endif /* def FEATURE_FORCE_LOAD */
810 #ifdef FEATURE_FAST_REDIRECTS
811 case LOG_LEVEL_REDIRECTS:
812 log_level_string = "Redirect";
814 #endif /* def FEATURE_FAST_REDIRECTS */
815 case LOG_LEVEL_DEANIMATE:
816 log_level_string = "Gif-Deanimate";
818 #ifdef FEATURE_KILL_POPUPS
819 case LOG_LEVEL_POPUPS:
820 log_level_string = "Kill-Popups";
822 #endif /* def FEATURE_KILL_POPUPS */
824 log_level_string = "CGI";
827 log_level_string = "Unknown log level";
830 assert(NULL != log_level_string);
832 return log_level_string;
836 /*********************************************************************
838 * Function : log_error
840 * Description : This is the error-reporting and logging function.
843 * 1 : loglevel = the type of message to be logged
844 * 2 : fmt = the main string we want logged, printf-like
845 * 3 : ... = arguments to be inserted in fmt (printf-like).
849 *********************************************************************/
850 void log_error(int loglevel, const char *fmt, ...)
854 static char *outbuf_save = NULL;
855 char tempbuf[BUFFER_SIZE];
857 const char * src = fmt;
861 * XXX: Make this a config option,
862 * why else do we allocate instead of using
865 size_t log_buffer_size = BUFFER_SIZE;
867 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
869 * Irrespective of debug setting, a GET/POST/CONNECT makes
870 * the taskbar icon animate. (There is an option to disable
871 * this but checking that is handled inside LogShowActivity()).
873 if (loglevel == LOG_LEVEL_GPC)
877 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
880 * verify that the loglevel applies to current
881 * settings and that logging is enabled.
882 * Bail out otherwise.
884 if ((0 == (loglevel & debug)) || (logfp == NULL))
889 thread_id = get_thread_id();
890 get_log_timestamp(timestamp, sizeof(timestamp));
892 /* protect the whole function because of the static buffer (outbuf) */
895 if (NULL == outbuf_save)
897 outbuf_save = (char*)zalloc(log_buffer_size + 1); /* +1 for paranoia */
898 if (NULL == outbuf_save)
900 snprintf(tempbuf, sizeof(tempbuf),
901 "%s Privoxy(%08lx) Fatal error: log_error() failed to allocate buffer memory.\n"
902 "\nExiting.", timestamp, thread_id);
903 assert(NULL != logfp);
904 fputs(tempbuf, logfp);
906 fatal_error(tempbuf); /* Exit */
909 outbuf = outbuf_save;
912 * Memsetting the whole buffer to zero (in theory)
913 * makes things easier later on.
915 memset(outbuf, 0, log_buffer_size);
917 /* Add prefix for everything but Common Log Format messages */
918 if (loglevel != LOG_LEVEL_CLF)
920 length = (size_t)snprintf(outbuf, log_buffer_size, "%s Privoxy(%08lx) %s: ",
921 timestamp, thread_id, get_log_level_string(loglevel));
924 /* get ready to scan var. args. */
927 /* build formatted message from fmt and var-args */
928 while ((*src) && (length < log_buffer_size-2))
930 const char *sval = NULL; /* %N string */
931 int ival; /* %N string length or an error code */
932 unsigned uval; /* %u value */
933 long lval; /* %l value */
934 unsigned long ulval; /* %ul value */
936 const char *format_string = tempbuf;
941 outbuf[length++] = ch;
943 * XXX: Only necessary on platforms which don't use pthread
944 * mutexes (mingw32 for example), where multiple threads can
945 * write to the buffer at the same time.
947 outbuf[length] = '\0';
950 outbuf[length] = '\0';
958 ival = va_arg( ap, int );
959 snprintf(tempbuf, sizeof(tempbuf), "%d", ival);
962 uval = va_arg( ap, unsigned );
963 snprintf(tempbuf, sizeof(tempbuf), "%u", uval);
966 /* this is a modifier that must be followed by u or d */
970 lval = va_arg( ap, long );
971 snprintf(tempbuf, sizeof(tempbuf), "%ld", lval);
975 ulval = va_arg( ap, unsigned long );
976 snprintf(tempbuf, sizeof(tempbuf), "%lu", ulval);
980 snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt);
981 loglevel = LOG_LEVEL_FATAL;
986 * Note that char paramaters are converted to int, so we need to
987 * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202)
989 tempbuf[0] = (char) va_arg(ap, int);
993 format_string = va_arg(ap, char *);
994 if (format_string == NULL)
996 format_string = "[null]";
1001 * Non-standard: Print a counted unterminated string.
1002 * Takes 2 parameters: int length, const char * string.
1004 ival = va_arg(ap, int);
1005 sval = va_arg(ap, char *);
1008 format_string = "[null]";
1014 /* That's ok (but stupid) */
1020 * That's not ok (and even more stupid)
1023 format_string = "[counted string lenght < 0]";
1026 else if (ival >= sizeof(tempbuf))
1029 * String is too long, copy as much as possible.
1030 * It will be further truncated later.
1032 memcpy(tempbuf, sval, sizeof(tempbuf)-1);
1033 tempbuf[sizeof(tempbuf)-1] = '\0';
1037 memcpy(tempbuf, sval, (size_t) ival);
1038 tempbuf[ival] = '\0';
1042 /* Non-standard: Print error code from errno */
1044 ival = WSAGetLastError();
1045 format_string = w32_socket_strerr(ival, tempbuf);
1047 ival = sock_errno();
1050 format_string = os2_socket_strerr(ival, tempbuf);
1055 format_string = strerror(ival);
1057 #else /* ifndef _WIN32 */
1059 #ifdef HAVE_STRERROR
1060 format_string = strerror(ival);
1061 #else /* ifndef HAVE_STRERROR */
1062 format_string = NULL;
1063 #endif /* ndef HAVE_STRERROR */
1066 snprintf(tempbuf, sizeof(tempbuf), "(errno = %d)", ival);
1068 #endif /* ndef _WIN32 */
1071 /* Non-standard: Print a Common Log File timestamp */
1072 get_clf_timestamp(tempbuf, sizeof(tempbuf));
1075 snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt);
1076 loglevel = LOG_LEVEL_FATAL;
1080 assert(length < log_buffer_size);
1081 length += strlcpy(outbuf + length, format_string, log_buffer_size - length);
1083 if (length >= log_buffer_size-2)
1085 static char warning[] = "... [too long, truncated]";
1087 length = log_buffer_size - sizeof(warning) - 1;
1088 length += strlcpy(outbuf + length, warning, log_buffer_size - length);
1089 assert(length < log_buffer_size);
1093 } /* for( p ... ) */
1095 /* done with var. args */
1098 assert(length < log_buffer_size);
1099 length += strlcpy(outbuf + length, "\n", log_buffer_size - length);
1101 /* Some sanity checks */
1102 if (!(length < log_buffer_size)
1103 || !(outbuf[log_buffer_size-1] == '\0')
1104 || !(outbuf[log_buffer_size] == '\0')
1107 /* Repeat as assertions */
1108 assert(length < log_buffer_size);
1109 assert(outbuf[log_buffer_size-1] == '\0');
1111 * outbuf's real size is log_buffer_size+1,
1112 * so while this looks like an off-by-one,
1113 * we're only checking our paranoia byte.
1115 assert(outbuf[log_buffer_size] == '\0');
1117 snprintf(outbuf, log_buffer_size,
1118 "%s Privoxy(%08lx) Fatal error: log_error()'s sanity checks failed. length: %d\n"
1119 "Exiting.", timestamp, thread_id, (int)length);
1120 loglevel = LOG_LEVEL_FATAL;
1123 assert(NULL != logfp);
1125 if (loglevel == LOG_LEVEL_FATAL)
1127 fatal_error(outbuf_save);
1128 /* Never get here */
1130 fputs(outbuf_save, logfp);
1134 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
1135 /* Write to display */
1136 LogPutString(outbuf_save);
1137 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
1142 /*********************************************************************
1144 * Function : jb_err_to_string
1146 * Description : Translates JB_ERR_FOO codes into strings.
1148 * XXX: the type of error codes is jb_err
1149 * but the typedef'inition is currently not
1150 * visible to all files that include errlog.h.
1153 * 1 : error = a valid jb_err code
1155 * Returns : A string with the jb_err translation
1157 *********************************************************************/
1158 const char *jb_err_to_string(int error)
1163 return "Success, no error";
1165 return "Out of memory";
1166 case JB_ERR_CGI_PARAMS:
1167 return "Missing or corrupt CGI parameters";
1169 return "Error opening, reading or writing a file";
1171 return "Parse error";
1172 case JB_ERR_MODIFIED:
1173 return "File has been modified outside of the CGI actions editor.";
1174 case JB_ERR_COMPRESS:
1175 return "(De)compression failure";
1178 return "Unknown error";
1181 return "Internal error";
1185 /*********************************************************************
1187 * Function : w32_socket_strerr
1189 * Description : Translate the return value from WSAGetLastError()
1193 * 1 : errcode = The return value from WSAGetLastError().
1194 * 2 : tmp_buf = A temporary buffer that might be used to
1197 * Returns : String representing the error code. This may be
1198 * a global string constant or a string stored in
1201 *********************************************************************/
1202 static char *w32_socket_strerr(int errcode, char *tmp_buf)
1204 #define TEXT_FOR_ERROR(code,text) \
1205 if (errcode == code) \
1207 return #code " - " text; \
1210 TEXT_FOR_ERROR(WSAEACCES, "Permission denied")
1211 TEXT_FOR_ERROR(WSAEADDRINUSE, "Address already in use.")
1212 TEXT_FOR_ERROR(WSAEADDRNOTAVAIL, "Cannot assign requested address.");
1213 TEXT_FOR_ERROR(WSAEAFNOSUPPORT, "Address family not supported by protocol family.");
1214 TEXT_FOR_ERROR(WSAEALREADY, "Operation already in progress.");
1215 TEXT_FOR_ERROR(WSAECONNABORTED, "Software caused connection abort.");
1216 TEXT_FOR_ERROR(WSAECONNREFUSED, "Connection refused.");
1217 TEXT_FOR_ERROR(WSAECONNRESET, "Connection reset by peer.");
1218 TEXT_FOR_ERROR(WSAEDESTADDRREQ, "Destination address required.");
1219 TEXT_FOR_ERROR(WSAEFAULT, "Bad address.");
1220 TEXT_FOR_ERROR(WSAEHOSTDOWN, "Host is down.");
1221 TEXT_FOR_ERROR(WSAEHOSTUNREACH, "No route to host.");
1222 TEXT_FOR_ERROR(WSAEINPROGRESS, "Operation now in progress.");
1223 TEXT_FOR_ERROR(WSAEINTR, "Interrupted function call.");
1224 TEXT_FOR_ERROR(WSAEINVAL, "Invalid argument.");
1225 TEXT_FOR_ERROR(WSAEISCONN, "Socket is already connected.");
1226 TEXT_FOR_ERROR(WSAEMFILE, "Too many open sockets.");
1227 TEXT_FOR_ERROR(WSAEMSGSIZE, "Message too long.");
1228 TEXT_FOR_ERROR(WSAENETDOWN, "Network is down.");
1229 TEXT_FOR_ERROR(WSAENETRESET, "Network dropped connection on reset.");
1230 TEXT_FOR_ERROR(WSAENETUNREACH, "Network is unreachable.");
1231 TEXT_FOR_ERROR(WSAENOBUFS, "No buffer space available.");
1232 TEXT_FOR_ERROR(WSAENOPROTOOPT, "Bad protocol option.");
1233 TEXT_FOR_ERROR(WSAENOTCONN, "Socket is not connected.");
1234 TEXT_FOR_ERROR(WSAENOTSOCK, "Socket operation on non-socket.");
1235 TEXT_FOR_ERROR(WSAEOPNOTSUPP, "Operation not supported.");
1236 TEXT_FOR_ERROR(WSAEPFNOSUPPORT, "Protocol family not supported.");
1237 TEXT_FOR_ERROR(WSAEPROCLIM, "Too many processes.");
1238 TEXT_FOR_ERROR(WSAEPROTONOSUPPORT, "Protocol not supported.");
1239 TEXT_FOR_ERROR(WSAEPROTOTYPE, "Protocol wrong type for socket.");
1240 TEXT_FOR_ERROR(WSAESHUTDOWN, "Cannot send after socket shutdown.");
1241 TEXT_FOR_ERROR(WSAESOCKTNOSUPPORT, "Socket type not supported.");
1242 TEXT_FOR_ERROR(WSAETIMEDOUT, "Connection timed out.");
1243 TEXT_FOR_ERROR(WSAEWOULDBLOCK, "Resource temporarily unavailable.");
1244 TEXT_FOR_ERROR(WSAHOST_NOT_FOUND, "Host not found.");
1245 TEXT_FOR_ERROR(WSANOTINITIALISED, "Successful WSAStartup not yet performed.");
1246 TEXT_FOR_ERROR(WSANO_DATA, "Valid name, no data record of requested type.");
1247 TEXT_FOR_ERROR(WSANO_RECOVERY, "This is a non-recoverable error.");
1248 TEXT_FOR_ERROR(WSASYSNOTREADY, "Network subsystem is unavailable.");
1249 TEXT_FOR_ERROR(WSATRY_AGAIN, "Non-authoritative host not found.");
1250 TEXT_FOR_ERROR(WSAVERNOTSUPPORTED, "WINSOCK.DLL version out of range.");
1251 TEXT_FOR_ERROR(WSAEDISCON, "Graceful shutdown in progress.");
1253 * The following error codes are documented in the Microsoft WinSock
1254 * reference guide, but don't actually exist.
1256 * TEXT_FOR_ERROR(WSA_INVALID_HANDLE, "Specified event object handle is invalid.");
1257 * TEXT_FOR_ERROR(WSA_INVALID_PARAMETER, "One or more parameters are invalid.");
1258 * TEXT_FOR_ERROR(WSAINVALIDPROCTABLE, "Invalid procedure table from service provider.");
1259 * TEXT_FOR_ERROR(WSAINVALIDPROVIDER, "Invalid service provider version number.");
1260 * TEXT_FOR_ERROR(WSA_IO_PENDING, "Overlapped operations will complete later.");
1261 * TEXT_FOR_ERROR(WSA_IO_INCOMPLETE, "Overlapped I/O event object not in signaled state.");
1262 * TEXT_FOR_ERROR(WSA_NOT_ENOUGH_MEMORY, "Insufficient memory available.");
1263 * TEXT_FOR_ERROR(WSAPROVIDERFAILEDINIT, "Unable to initialize a service provider.");
1264 * TEXT_FOR_ERROR(WSASYSCALLFAILURE, "System call failure.");
1265 * TEXT_FOR_ERROR(WSA_OPERATION_ABORTED, "Overlapped operation aborted.");
1268 sprintf(tmp_buf, "(error number %d)", errcode);
1271 #endif /* def _WIN32 */
1275 /*********************************************************************
1277 * Function : os2_socket_strerr
1279 * Description : Translate the return value from sock_errno()
1283 * 1 : errcode = The return value from sock_errno().
1284 * 2 : tmp_buf = A temporary buffer that might be used to
1287 * Returns : String representing the error code. This may be
1288 * a global string constant or a string stored in
1291 *********************************************************************/
1292 static char *os2_socket_strerr(int errcode, char *tmp_buf)
1294 #define TEXT_FOR_ERROR(code,text) \
1295 if (errcode == code) \
1297 return #code " - " text; \
1300 TEXT_FOR_ERROR(SOCEPERM , "Not owner.")
1301 TEXT_FOR_ERROR(SOCESRCH , "No such process.")
1302 TEXT_FOR_ERROR(SOCEINTR , "Interrupted system call.")
1303 TEXT_FOR_ERROR(SOCENXIO , "No such device or address.")
1304 TEXT_FOR_ERROR(SOCEBADF , "Bad file number.")
1305 TEXT_FOR_ERROR(SOCEACCES , "Permission denied.")
1306 TEXT_FOR_ERROR(SOCEFAULT , "Bad address.")
1307 TEXT_FOR_ERROR(SOCEINVAL , "Invalid argument.")
1308 TEXT_FOR_ERROR(SOCEMFILE , "Too many open files.")
1309 TEXT_FOR_ERROR(SOCEPIPE , "Broken pipe.")
1310 TEXT_FOR_ERROR(SOCEWOULDBLOCK , "Operation would block.")
1311 TEXT_FOR_ERROR(SOCEINPROGRESS , "Operation now in progress.")
1312 TEXT_FOR_ERROR(SOCEALREADY , "Operation already in progress.")
1313 TEXT_FOR_ERROR(SOCENOTSOCK , "Socket operation on non-socket.")
1314 TEXT_FOR_ERROR(SOCEDESTADDRREQ , "Destination address required.")
1315 TEXT_FOR_ERROR(SOCEMSGSIZE , "Message too long.")
1316 TEXT_FOR_ERROR(SOCEPROTOTYPE , "Protocol wrong type for socket.")
1317 TEXT_FOR_ERROR(SOCENOPROTOOPT , "Protocol not available.")
1318 TEXT_FOR_ERROR(SOCEPROTONOSUPPORT, "Protocol not supported.")
1319 TEXT_FOR_ERROR(SOCESOCKTNOSUPPORT, "Socket type not supported.")
1320 TEXT_FOR_ERROR(SOCEOPNOTSUPP , "Operation not supported.")
1321 TEXT_FOR_ERROR(SOCEPFNOSUPPORT , "Protocol family not supported.")
1322 TEXT_FOR_ERROR(SOCEAFNOSUPPORT , "Address family not supported by protocol family.")
1323 TEXT_FOR_ERROR(SOCEADDRINUSE , "Address already in use.")
1324 TEXT_FOR_ERROR(SOCEADDRNOTAVAIL , "Can't assign requested address.")
1325 TEXT_FOR_ERROR(SOCENETDOWN , "Network is down.")
1326 TEXT_FOR_ERROR(SOCENETUNREACH , "Network is unreachable.")
1327 TEXT_FOR_ERROR(SOCENETRESET , "Network dropped connection on reset.")
1328 TEXT_FOR_ERROR(SOCECONNABORTED , "Software caused connection abort.")
1329 TEXT_FOR_ERROR(SOCECONNRESET , "Connection reset by peer.")
1330 TEXT_FOR_ERROR(SOCENOBUFS , "No buffer space available.")
1331 TEXT_FOR_ERROR(SOCEISCONN , "Socket is already connected.")
1332 TEXT_FOR_ERROR(SOCENOTCONN , "Socket is not connected.")
1333 TEXT_FOR_ERROR(SOCESHUTDOWN , "Can't send after socket shutdown.")
1334 TEXT_FOR_ERROR(SOCETOOMANYREFS , "Too many references: can't splice.")
1335 TEXT_FOR_ERROR(SOCETIMEDOUT , "Operation timed out.")
1336 TEXT_FOR_ERROR(SOCECONNREFUSED , "Connection refused.")
1337 TEXT_FOR_ERROR(SOCELOOP , "Too many levels of symbolic links.")
1338 TEXT_FOR_ERROR(SOCENAMETOOLONG , "File name too long.")
1339 TEXT_FOR_ERROR(SOCEHOSTDOWN , "Host is down.")
1340 TEXT_FOR_ERROR(SOCEHOSTUNREACH , "No route to host.")
1341 TEXT_FOR_ERROR(SOCENOTEMPTY , "Directory not empty.")
1342 TEXT_FOR_ERROR(SOCEOS2ERR , "OS/2 Error.")
1344 sprintf(tmp_buf, "(error number %d)", errcode);
1347 #endif /* def __OS2__ */