1 const char errlog_rcs[] = "$Id: errlog.c,v 1.59 2007/11/01 12:50:56 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 1.59 2007/11/01 12:50:56 fabiankeil
37 * Here's looking at you, deadlock.
39 * Revision 1.58 2007/10/28 19:04:21 fabiankeil
40 * Don't mention daemon mode in "Logging disabled" message. Some
41 * platforms call it differently and it's not really relevant anyway.
43 * Revision 1.57 2007/10/27 13:02:26 fabiankeil
44 * Relocate daemon-mode-related log messages to make sure
45 * they aren't shown again in case of configuration reloads.
47 * Revision 1.56 2007/10/14 14:26:56 fabiankeil
48 * Remove the old log_error() version.
50 * Revision 1.55 2007/10/14 14:12:41 fabiankeil
51 * When in daemon mode, close stderr after the configuration file has been
52 * parsed the first time. If logfile isn't set, stop logging. Fixes BR#897436.
54 * Revision 1.54 2007/09/22 16:15:34 fabiankeil
55 * - Let it compile with pcc.
56 * - Move our includes below system includes to prevent macro conflicts.
58 * Revision 1.53 2007/08/05 13:53:14 fabiankeil
59 * #1763173 from Stefan Huehner: declare some more functions
60 * static and use void instead of empty parameter lists.
62 * Revision 1.52 2007/07/14 07:28:47 fabiankeil
63 * Add translation function for JB_ERR_FOO codes.
65 * Revision 1.51 2007/05/11 11:51:34 fabiankeil
66 * Fix a type mismatch warning.
68 * Revision 1.50 2007/04/11 10:55:44 fabiankeil
69 * Enforce some assertions that could be triggered
70 * on mingw32 and other systems where we use threads
73 * Revision 1.49 2007/04/08 16:44:15 fabiankeil
74 * We need <sys/time.h> for gettimeofday(), not <time.h>.
76 * Revision 1.48 2007/03/31 13:33:28 fabiankeil
77 * Add alternative log_error() with timestamps
78 * that contain milliseconds and without using
79 * strcpy(), strcat() or sprintf().
81 * Revision 1.47 2006/11/28 15:25:15 fabiankeil
82 * Only unlink the pidfile if it's actually used.
84 * Revision 1.46 2006/11/13 19:05:51 fabiankeil
85 * Make pthread mutex locking more generic. Instead of
86 * checking for OSX and OpenBSD, check for FEATURE_PTHREAD
87 * and use mutex locking unless there is an _r function
88 * available. Better safe than sorry.
90 * Fixes "./configure --disable-pthread" and should result
91 * in less threading-related problems on pthread-using platforms,
92 * but it still doesn't fix BR#1122404.
94 * Revision 1.45 2006/08/21 11:15:54 david__schmidt
95 * MS Visual C++ build updates
97 * Revision 1.44 2006/08/18 16:03:16 david__schmidt
98 * Tweak for OS/2 build happiness.
100 * Revision 1.43 2006/08/03 02:46:41 david__schmidt
101 * Incorporate Fabian Keil's patch work:
102 * http://www.fabiankeil.de/sourcecode/privoxy/
104 * Revision 1.42 2006/07/18 14:48:46 david__schmidt
105 * Reorganizing the repository: swapping out what was HEAD (the old 3.1 branch)
106 * with what was really the latest development (the v_3_0_branch branch)
108 * Revision 1.40.2.4 2005/04/03 20:10:50 david__schmidt
109 * Thanks to Jindrich Makovicka for a race condition fix for the log
110 * file. The race condition remains for non-pthread implementations.
111 * Reference patch #1175720.
113 * Revision 1.40.2.3 2003/03/07 03:41:04 david__schmidt
114 * Wrapping all *_r functions (the non-_r versions of them) with mutex
115 * semaphores for OSX. Hopefully this will take care of all of those pesky
118 * Revision 1.40.2.2 2002/09/28 00:30:57 david__schmidt
119 * Update error logging to give sane values for thread IDs on Mach kernels.
120 * It's still a hack, but at least it looks farily normal. We print the
121 * absolute value of the first 4 bytes of the pthread_t modded with 1000.
123 * Revision 1.40.2.1 2002/09/25 12:47:42 oes
124 * Make log_error safe against NULL string arguments
126 * Revision 1.40 2002/05/22 01:27:27 david__schmidt
128 * Add os2_socket_strerr mirroring w32_socket_strerr.
130 * Revision 1.39 2002/04/03 17:15:27 gliptak
131 * zero padding thread ids in log
133 * Revision 1.38 2002/03/31 17:18:59 jongfoster
134 * Win32 only: Enabling STRICT to fix a VC++ compile warning.
136 * Revision 1.37 2002/03/27 14:32:43 david__schmidt
137 * More compiler warning message maintenance
139 * Revision 1.36 2002/03/26 22:29:54 swa
140 * we have a new homepage!
142 * Revision 1.35 2002/03/24 15:23:33 jongfoster
145 * Revision 1.34 2002/03/24 13:25:43 swa
146 * name change related issues
148 * Revision 1.33 2002/03/13 00:27:04 jongfoster
151 * Revision 1.32 2002/03/07 03:46:17 oes
152 * Fixed compiler warnings
154 * Revision 1.31 2002/03/06 23:02:57 jongfoster
157 * Revision 1.30 2002/03/05 22:43:45 david__schmidt
158 * - Better error reporting on OS/2
159 * - Fix double-slash comment (oops)
161 * Revision 1.29 2002/03/04 23:45:13 jongfoster
162 * Printing thread ID if using Win32 native threads
164 * Revision 1.28 2002/03/04 17:59:59 oes
165 * Deleted deletePidFile(), cosmetics
167 * Revision 1.27 2002/03/04 02:08:01 david__schmidt
168 * Enable web editing of actions file on OS/2 (it had been broken all this time!)
170 * Revision 1.26 2002/01/09 19:05:45 steudten
171 * Fix big memory leak.
173 * Revision 1.25 2002/01/09 14:32:08 oes
174 * Added support for gmtime_r and localtime_r.
176 * Revision 1.24 2001/12/30 14:07:32 steudten
177 * - Add signal handling (unix)
178 * - Add SIGHUP handler (unix)
179 * - Add creation of pidfile (unix)
180 * - Add action 'top' in rc file (RH)
181 * - Add entry 'SIGNALS' to manpage
182 * - Add exit message to logfile (unix)
184 * Revision 1.23 2001/11/07 00:02:13 steudten
185 * Add line number in error output for lineparsing for
186 * actionsfile and configfile.
187 * Special handling for CLF added.
189 * Revision 1.22 2001/11/05 23:43:05 steudten
190 * Add time+date to log files.
192 * Revision 1.21 2001/10/25 03:40:47 david__schmidt
193 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
194 * threads to call select() simultaneously. So, it's time to do a real, live,
195 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
196 * (native). Both versions will work, but using __OS2__ offers multi-threading.
198 * Revision 1.20 2001/09/16 23:04:34 jongfoster
201 * Revision 1.19 2001/09/13 20:08:06 jongfoster
202 * Adding support for LOG_LEVEL_CGI
204 * Revision 1.18 2001/09/10 11:27:24 oes
205 * Declaration of w32_socket_strerr now conditional
207 * Revision 1.17 2001/09/10 10:17:13 oes
208 * Removed unused variable; Fixed sprintf format
210 * Revision 1.16 2001/07/30 22:08:36 jongfoster
211 * Tidying up #defines:
212 * - All feature #defines are now of the form FEATURE_xxx
213 * - Permanently turned off WIN_GUI_EDIT
214 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
216 * Revision 1.15 2001/07/29 17:41:10 jongfoster
217 * Now prints thread ID for each message (pthreads only)
219 * Revision 1.14 2001/07/19 19:03:48 haroon
220 * - Added case for LOG_LEVEL_POPUPS
222 * Revision 1.13 2001/07/13 13:58:58 oes
223 * - Added case for LOG_LEVEL_DEANIMATE
224 * - Removed all #ifdef PCRS
226 * Revision 1.12 2001/06/09 10:55:28 jongfoster
227 * Changing BUFSIZ ==> BUFFER_SIZE
229 * Revision 1.11 2001/06/01 18:14:49 jongfoster
230 * Changing the calls to strerr() to check HAVE_STRERR (which is defined
231 * in config.h if appropriate) rather than the NO_STRERR macro.
233 * Revision 1.10 2001/05/29 11:52:21 oes
234 * Conditional compilation of w32_socket_error
236 * Revision 1.9 2001/05/28 16:15:17 jongfoster
237 * Improved reporting of errors under Win32.
239 * Revision 1.8 2001/05/26 17:25:14 jongfoster
240 * Added support for CLF (Common Log Format) and fixed LOG_LEVEL_LOG
242 * Revision 1.7 2001/05/26 15:21:28 jongfoster
243 * Activity animation in Win32 GUI now works even if debug==0
245 * Revision 1.6 2001/05/25 21:55:08 jongfoster
246 * Now cleans up properly on FATAL (removes taskbar icon etc)
248 * Revision 1.5 2001/05/22 18:46:04 oes
250 * - Enabled filtering banners by size rather than URL
251 * by adding patterns that replace all standard banner
252 * sizes with the "Junkbuster" gif to the re_filterfile
254 * - Enabled filtering WebBugs by providing a pattern
255 * which kills all 1x1 images
257 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
258 * which is selected by the (nonstandard and therefore
259 * capital) letter 'U' in the option string.
260 * It causes the quantifiers to be ungreedy by default.
261 * Appending a ? turns back to greedy (!).
263 * - Added a new interceptor ijb-send-banner, which
264 * sends back the "Junkbuster" gif. Without imagelist or
265 * MSIE detection support, or if tinygif = 1, or the
266 * URL isn't recognized as an imageurl, a lame HTML
267 * explanation is sent instead.
269 * - Added new feature, which permits blocking remote
270 * script redirects and firing back a local redirect
272 * The feature is conditionally compiled, i.e. it
273 * can be disabled with --disable-fast-redirects,
274 * plus it must be activated by a "fast-redirects"
275 * line in the config file, has its own log level
276 * and of course wants to be displayed by show-proxy-args
277 * Note: Boy, all the #ifdefs in 1001 locations and
278 * all the fumbling with configure.in and acconfig.h
279 * were *way* more work than the feature itself :-(
281 * - Because a generic redirect template was needed for
282 * this, tinygif = 3 now uses the same.
284 * - Moved GIFs, and other static HTTP response templates
289 * - Removed some >400 CRs again (Jon, you really worked
292 * Revision 1.4 2001/05/21 19:32:54 jongfoster
293 * Added another #ifdef _WIN_CONSOLE
295 * Revision 1.3 2001/05/20 01:11:40 jongfoster
296 * Added support for LOG_LEVEL_FATAL
297 * Renamed LOG_LEVEL_FRC to LOG_LEVEL_FORCE,
298 * and LOG_LEVEL_REF to LOG_LEVEL_RE_FILTER
300 * Revision 1.2 2001/05/17 22:42:01 oes
301 * - Cleaned CRLF's from the sources and related files
302 * - Repaired logging for REF and FRC
304 * Revision 1.1.1.1 2001/05/15 13:58:51 oes
305 * Initial import of version 2.9.3 source tree
308 *********************************************************************/
317 #include "miscutil.h"
319 /* For gettimeofday() */
320 #include <sys/time.h>
322 #if !defined(_WIN32) && !defined(__OS2__)
324 #endif /* !defined(_WIN32) && !defined(__OS2__) */
336 #endif /* ndef _WIN_CONSOLE */
337 #endif /* def _WIN32 */
339 #define inline __inline
340 #endif /* def _MSC_VER */
343 #include <sys/socket.h> /* For sock_errno */
352 const char errlog_h_rcs[] = ERRLOG_H_VERSION;
356 * LOG_LEVEL_FATAL cannot be turned off. (There are
357 * some exceptional situations where we need to get a
358 * message to the user).
360 #define LOG_LEVEL_MINIMUM LOG_LEVEL_FATAL
362 /* where to log (default: stderr) */
363 static FILE *logfp = NULL;
365 /* logging detail level. */
366 int debug = (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR | LOG_LEVEL_INFO);
368 /* static functions */
369 static void fatal_error(const char * error_message);
371 static char *w32_socket_strerr(int errcode, char *tmp_buf);
374 static char *os2_socket_strerr(int errcode, char *tmp_buf);
377 #ifdef FEATURE_PTHREAD
378 static inline void lock_logfile(void)
380 pthread_mutex_lock(&log_mutex);
382 static inline void unlock_logfile(void)
384 pthread_mutex_unlock(&log_mutex);
386 static inline void lock_loginit(void)
388 pthread_mutex_lock(&log_init_mutex);
390 static inline void unlock_loginit(void)
392 pthread_mutex_unlock(&log_init_mutex);
394 #else /* ! FEATURE_PTHREAD */
396 * FIXME we need a cross-platform locking mechanism.
397 * The locking/unlocking functions below should be
398 * fleshed out for non-pthread implementations.
400 static inline void lock_logfile() {}
401 static inline void unlock_logfile() {}
402 static inline void lock_loginit() {}
403 static inline void unlock_loginit() {}
406 /*********************************************************************
408 * Function : fatal_error
410 * Description : Displays a fatal error to standard error (or, on
411 * a WIN32 GUI, to a dialog box), and exits
412 * JunkBuster with status code 1.
415 * 1 : error_message = The error message to display.
417 * Returns : Does not return.
419 *********************************************************************/
420 static void fatal_error(const char * error_message)
422 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
423 MessageBox(g_hwndLogFrame, error_message, "Privoxy Error",
424 MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST);
426 /* Cleanup - remove taskbar icon etc. */
429 #else /* if !defined(_WIN32) || defined(_WIN_CONSOLE) */
430 fputs(error_message, logfp);
431 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
444 /*********************************************************************
446 * Function : show_version
448 * Description : Logs the Privoxy version and the program name.
451 * 1 : prog_name = The program name.
455 *********************************************************************/
456 static void show_version(const char *prog_name)
458 log_error(LOG_LEVEL_INFO, "Privoxy version " VERSION);
459 if (prog_name != NULL)
461 log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name);
466 /*********************************************************************
468 * Function : init_log_module
470 * Description : Initializes the logging module to log to stderr.
471 * Can only be called while stderr hasn't been closed
472 * yet and is only supposed to be called once.
475 * 1 : prog_name = The program name.
479 *********************************************************************/
480 void init_log_module(const char *prog_name)
485 set_debug_level(debug);
486 show_version(prog_name);
490 /*********************************************************************
492 * Function : set_debug_level
494 * Description : Sets the debug level to the provided value
495 * plus LOG_LEVEL_MINIMUM.
497 * XXX: we should only use the LOG_LEVEL_MINIMUM
498 * until the frist time the configuration file has
501 * Parameters : 1: debug_level = The debug level to set.
505 *********************************************************************/
506 void set_debug_level(int debug_level)
508 debug = debug_level | LOG_LEVEL_MINIMUM;
512 /*********************************************************************
514 * Function : disable_logging
516 * Description : Disables logging.
522 *********************************************************************/
523 void disable_logging(void)
528 log_error(LOG_LEVEL_INFO, "No logfile configured. Logging disabled.");
536 /*********************************************************************
538 * Function : init_error_log
540 * Description : Initializes the logging module to log to a file.
542 * XXX: should be renamed.
545 * 1 : prog_name = The program name.
546 * 2 : logfname = The logfile name, or NULL for stderr.
547 * 3 : debuglevel = The debugging level.
551 *********************************************************************/
552 void init_error_log(const char *prog_name, const char *logfname)
556 assert(NULL != logfname);
562 log_error(LOG_LEVEL_INFO, "(Re-)Opening logfile \'%s\'", logfname);
565 /* set the designated log file */
566 fp = fopen(logfname, "a");
569 log_error(LOG_LEVEL_FATAL, "init_error_log(): can't open logfile: \'%s\'", logfname);
572 /* set logging to be completely unbuffered */
585 * Prevent the Windows GUI from showing the version two
586 * times in a row on startup. It already displayed the show_version()
587 * call from init_log_module() that other systems write to stderr.
589 * This means mingw32 users will never see the version in their
590 * log file, but I assume they wouldn't look for it there anyway
591 * and simply use the "Help/About Privoxy" menu.
593 show_version(prog_name);
594 #endif /* def unix */
598 } /* init_error_log */
601 /*********************************************************************
603 * Function : get_thread_id
605 * Description : Returns a number that is different for each thread.
607 * XXX: Should be moved elsewhere (miscutil.c?)
611 * Returns : thread_id
613 *********************************************************************/
614 static long get_thread_id(void)
616 long this_thread = 1; /* was: pthread_t this_thread;*/
620 APIRET ulrc; /* XXX: I have no clue what this does */
623 /* FIXME get current thread id */
624 #ifdef FEATURE_PTHREAD
625 this_thread = (long)pthread_self();
628 * Mac OSX (and perhaps other Mach instances) doesn't have a debuggable
629 * value at the first 4 bytes of pthread_self()'s return value, a pthread_t.
630 * pthread_t is supposed to be opaque... but it's fairly random, though, so
631 * we make it mostly presentable.
633 this_thread = abs(this_thread % 1000);
634 #endif /* def __MACH__ */
635 #elif defined(_WIN32)
636 this_thread = GetCurrentThreadId();
637 #elif defined(__OS2__)
638 ulrc = DosGetInfoBlocks(&ptib, NULL);
640 this_thread = ptib -> tib_ptib2 -> tib2_ultid;
641 #endif /* def FEATURE_PTHREAD */
647 /*********************************************************************
649 * Function : get_log_timestamp
651 * Description : Generates the time stamp for the log message prefix.
654 * 1 : buffer = Storage buffer
655 * 2 : buffer_size = Size of storage buffer
657 * Returns : Number of written characters or 0 for error.
659 *********************************************************************/
660 static inline size_t get_log_timestamp(char *buffer, size_t buffer_size)
665 struct timeval tv_now; /* XXX: stupid name */
667 int msecs_length = 0;
669 gettimeofday(&tv_now, NULL);
670 msecs = tv_now.tv_usec / 1000;
674 #ifdef HAVE_LOCALTIME_R
675 tm_now = *localtime_r(&now, &tm_now);
676 #elif FEATURE_PTHREAD
677 pthread_mutex_lock(&localtime_mutex);
678 tm_now = *localtime(&now);
679 pthread_mutex_unlock(&localtime_mutex);
681 tm_now = *localtime(&now);
684 length = strftime(buffer, buffer_size, "%b %d %H:%M:%S", &tm_now);
687 msecs_length = snprintf(buffer+length, buffer_size - length, ".%.3ld", msecs);
689 if (msecs_length > 0)
691 length += (size_t)msecs_length;
702 /*********************************************************************
704 * Function : get_clf_timestamp
706 * Description : Generates a Common Log Format time string.
709 * 1 : buffer = Storage buffer
710 * 2 : buffer_size = Size of storage buffer
712 * Returns : Number of written characters or 0 for error.
714 *********************************************************************/
715 static inline size_t get_clf_timestamp(char *buffer, size_t buffer_size)
718 * Complex because not all OSs have tm_gmtoff or
719 * the %z field in strftime()
724 #ifdef HAVE_LOCALTIME_R
733 gmt = *gmtime_r(&now, &gmt);
734 #elif FEATURE_PTHREAD
735 pthread_mutex_lock(&gmtime_mutex);
737 pthread_mutex_unlock(&gmtime_mutex);
741 #ifdef HAVE_LOCALTIME_R
742 tm_now = localtime_r(&now, &dummy);
743 #elif FEATURE_PTHREAD
744 pthread_mutex_lock(&localtime_mutex);
745 tm_now = localtime(&now);
746 pthread_mutex_unlock(&localtime_mutex);
748 tm_now = localtime(&now);
750 days = tm_now->tm_yday - gmt.tm_yday;
751 hrs = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + tm_now->tm_hour - gmt.tm_hour);
752 mins = hrs * 60 + tm_now->tm_min - gmt.tm_min;
754 length = strftime(buffer, buffer_size, "%d/%b/%Y:%H:%M:%S ", tm_now);
758 tz_length = snprintf(buffer+length, buffer_size-length,
759 "%+03d%02d", mins / 60, abs(mins) % 60);
763 length += (size_t)tz_length;
774 /*********************************************************************
776 * Function : get_log_level_string
778 * Description : Translates a numerical loglevel into a string.
781 * 1 : loglevel = LOG_LEVEL_FOO
783 * Returns : Log level string.
785 *********************************************************************/
786 static inline const char *get_log_level_string(int loglevel)
788 char *log_level_string = NULL;
790 assert(0 < loglevel);
794 case LOG_LEVEL_ERROR:
795 log_level_string = "Error";
797 case LOG_LEVEL_FATAL:
798 log_level_string = "Fatal error";
801 log_level_string = "Request";
803 case LOG_LEVEL_CONNECT:
804 log_level_string = "Connect";
807 log_level_string = "Writing";
809 case LOG_LEVEL_HEADER:
810 log_level_string = "Header";
813 log_level_string = "Info";
815 case LOG_LEVEL_RE_FILTER:
816 log_level_string = "Re-Filter";
818 #ifdef FEATURE_FORCE_LOAD
819 case LOG_LEVEL_FORCE:
820 log_level_string = "Force";
822 #endif /* def FEATURE_FORCE_LOAD */
823 #ifdef FEATURE_FAST_REDIRECTS
824 case LOG_LEVEL_REDIRECTS:
825 log_level_string = "Redirect";
827 #endif /* def FEATURE_FAST_REDIRECTS */
828 case LOG_LEVEL_DEANIMATE:
829 log_level_string = "Gif-Deanimate";
831 #ifdef FEATURE_KILL_POPUPS
832 case LOG_LEVEL_POPUPS:
833 log_level_string = "Kill-Popups";
835 #endif /* def FEATURE_KILL_POPUPS */
837 log_level_string = "CGI";
840 log_level_string = "Unknown log level";
843 assert(NULL != log_level_string);
845 return log_level_string;
849 /*********************************************************************
851 * Function : log_error
853 * Description : This is the error-reporting and logging function.
856 * 1 : loglevel = the type of message to be logged
857 * 2 : fmt = the main string we want logged, printf-like
858 * 3 : ... = arguments to be inserted in fmt (printf-like).
862 *********************************************************************/
863 void log_error(int loglevel, const char *fmt, ...)
867 static char *outbuf_save = NULL;
868 char tempbuf[BUFFER_SIZE];
870 const char * src = fmt;
874 * XXX: Make this a config option,
875 * why else do we allocate instead of using
878 size_t log_buffer_size = BUFFER_SIZE;
880 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
882 * Irrespective of debug setting, a GET/POST/CONNECT makes
883 * the taskbar icon animate. (There is an option to disable
884 * this but checking that is handled inside LogShowActivity()).
886 if (loglevel == LOG_LEVEL_GPC)
890 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
893 * verify that the loglevel applies to current
894 * settings and that logging is enabled.
895 * Bail out otherwise.
897 if ((0 == (loglevel & debug)) || (logfp == NULL))
902 thread_id = get_thread_id();
903 get_log_timestamp(timestamp, sizeof(timestamp));
905 /* protect the whole function because of the static buffer (outbuf) */
908 if (NULL == outbuf_save)
910 outbuf_save = (char*)zalloc(log_buffer_size + 1); /* +1 for paranoia */
911 if (NULL == outbuf_save)
913 snprintf(tempbuf, sizeof(tempbuf),
914 "%s Privoxy(%08lx) Fatal error: log_error() failed to allocate buffer memory.\n"
915 "\nExiting.", timestamp, thread_id);
916 assert(NULL != logfp);
917 fputs(tempbuf, logfp);
919 fatal_error(tempbuf); /* Exit */
922 outbuf = outbuf_save;
925 * Memsetting the whole buffer to zero (in theory)
926 * makes things easier later on.
928 memset(outbuf, 0, log_buffer_size);
930 /* Add prefix for everything but Common Log Format messages */
931 if (loglevel != LOG_LEVEL_CLF)
933 length = (size_t)snprintf(outbuf, log_buffer_size, "%s Privoxy(%08lx) %s: ",
934 timestamp, thread_id, get_log_level_string(loglevel));
937 /* get ready to scan var. args. */
940 /* build formatted message from fmt and var-args */
941 while ((*src) && (length < log_buffer_size-2))
943 const char *sval = NULL; /* %N string */
944 int ival; /* %N string length or an error code */
945 unsigned uval; /* %u value */
946 long lval; /* %l value */
947 unsigned long ulval; /* %ul value */
949 const char *format_string = tempbuf;
954 outbuf[length++] = ch;
956 * XXX: Only necessary on platforms which don't use pthread
957 * mutexes (mingw32 for example), where multiple threads can
958 * write to the buffer at the same time.
960 outbuf[length] = '\0';
963 outbuf[length] = '\0';
971 ival = va_arg( ap, int );
972 snprintf(tempbuf, sizeof(tempbuf), "%d", ival);
975 uval = va_arg( ap, unsigned );
976 snprintf(tempbuf, sizeof(tempbuf), "%u", uval);
979 /* this is a modifier that must be followed by u or d */
983 lval = va_arg( ap, long );
984 snprintf(tempbuf, sizeof(tempbuf), "%ld", lval);
988 ulval = va_arg( ap, unsigned long );
989 snprintf(tempbuf, sizeof(tempbuf), "%lu", ulval);
993 snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt);
994 loglevel = LOG_LEVEL_FATAL;
999 * Note that char paramaters are converted to int, so we need to
1000 * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202)
1002 tempbuf[0] = (char) va_arg(ap, int);
1006 format_string = va_arg(ap, char *);
1007 if (format_string == NULL)
1009 format_string = "[null]";
1014 * Non-standard: Print a counted unterminated string.
1015 * Takes 2 parameters: int length, const char * string.
1017 ival = va_arg(ap, int);
1018 sval = va_arg(ap, char *);
1021 format_string = "[null]";
1027 /* That's ok (but stupid) */
1033 * That's not ok (and even more stupid)
1036 format_string = "[counted string lenght < 0]";
1039 else if (ival >= sizeof(tempbuf))
1042 * String is too long, copy as much as possible.
1043 * It will be further truncated later.
1045 memcpy(tempbuf, sval, sizeof(tempbuf)-1);
1046 tempbuf[sizeof(tempbuf)-1] = '\0';
1050 memcpy(tempbuf, sval, (size_t) ival);
1051 tempbuf[ival] = '\0';
1055 /* Non-standard: Print error code from errno */
1057 ival = WSAGetLastError();
1058 format_string = w32_socket_strerr(ival, tempbuf);
1060 ival = sock_errno();
1063 format_string = os2_socket_strerr(ival, tempbuf);
1068 format_string = strerror(ival);
1070 #else /* ifndef _WIN32 */
1072 #ifdef HAVE_STRERROR
1073 format_string = strerror(ival);
1074 #else /* ifndef HAVE_STRERROR */
1075 format_string = NULL;
1076 #endif /* ndef HAVE_STRERROR */
1079 snprintf(tempbuf, sizeof(tempbuf), "(errno = %d)", ival);
1081 #endif /* ndef _WIN32 */
1084 /* Non-standard: Print a Common Log File timestamp */
1085 get_clf_timestamp(tempbuf, sizeof(tempbuf));
1088 snprintf(tempbuf, sizeof(tempbuf), "Bad format string: \"%s\"", fmt);
1089 loglevel = LOG_LEVEL_FATAL;
1093 assert(length < log_buffer_size);
1094 length += strlcpy(outbuf + length, format_string, log_buffer_size - length);
1096 if (length >= log_buffer_size-2)
1098 static char warning[] = "... [too long, truncated]";
1100 length = log_buffer_size - sizeof(warning) - 1;
1101 length += strlcpy(outbuf + length, warning, log_buffer_size - length);
1102 assert(length < log_buffer_size);
1106 } /* for( p ... ) */
1108 /* done with var. args */
1111 assert(length < log_buffer_size);
1112 length += strlcpy(outbuf + length, "\n", log_buffer_size - length);
1114 /* Some sanity checks */
1115 if (!(length < log_buffer_size)
1116 || !(outbuf[log_buffer_size-1] == '\0')
1117 || !(outbuf[log_buffer_size] == '\0')
1120 /* Repeat as assertions */
1121 assert(length < log_buffer_size);
1122 assert(outbuf[log_buffer_size-1] == '\0');
1124 * outbuf's real size is log_buffer_size+1,
1125 * so while this looks like an off-by-one,
1126 * we're only checking our paranoia byte.
1128 assert(outbuf[log_buffer_size] == '\0');
1130 snprintf(outbuf, log_buffer_size,
1131 "%s Privoxy(%08lx) Fatal error: log_error()'s sanity checks failed. length: %d\n"
1132 "Exiting.", timestamp, thread_id, (int)length);
1133 loglevel = LOG_LEVEL_FATAL;
1136 assert(NULL != logfp);
1138 if (loglevel == LOG_LEVEL_FATAL)
1140 fatal_error(outbuf_save);
1141 /* Never get here */
1143 fputs(outbuf_save, logfp);
1147 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
1148 /* Write to display */
1149 LogPutString(outbuf_save);
1150 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
1155 /*********************************************************************
1157 * Function : jb_err_to_string
1159 * Description : Translates JB_ERR_FOO codes into strings.
1161 * XXX: the type of error codes is jb_err
1162 * but the typedef'inition is currently not
1163 * visible to all files that include errlog.h.
1166 * 1 : error = a valid jb_err code
1168 * Returns : A string with the jb_err translation
1170 *********************************************************************/
1171 const char *jb_err_to_string(int error)
1176 return "Success, no error";
1178 return "Out of memory";
1179 case JB_ERR_CGI_PARAMS:
1180 return "Missing or corrupt CGI parameters";
1182 return "Error opening, reading or writing a file";
1184 return "Parse error";
1185 case JB_ERR_MODIFIED:
1186 return "File has been modified outside of the CGI actions editor.";
1187 case JB_ERR_COMPRESS:
1188 return "(De)compression failure";
1191 return "Unknown error";
1194 return "Internal error";
1198 /*********************************************************************
1200 * Function : w32_socket_strerr
1202 * Description : Translate the return value from WSAGetLastError()
1206 * 1 : errcode = The return value from WSAGetLastError().
1207 * 2 : tmp_buf = A temporary buffer that might be used to
1210 * Returns : String representing the error code. This may be
1211 * a global string constant or a string stored in
1214 *********************************************************************/
1215 static char *w32_socket_strerr(int errcode, char *tmp_buf)
1217 #define TEXT_FOR_ERROR(code,text) \
1218 if (errcode == code) \
1220 return #code " - " text; \
1223 TEXT_FOR_ERROR(WSAEACCES, "Permission denied")
1224 TEXT_FOR_ERROR(WSAEADDRINUSE, "Address already in use.")
1225 TEXT_FOR_ERROR(WSAEADDRNOTAVAIL, "Cannot assign requested address.");
1226 TEXT_FOR_ERROR(WSAEAFNOSUPPORT, "Address family not supported by protocol family.");
1227 TEXT_FOR_ERROR(WSAEALREADY, "Operation already in progress.");
1228 TEXT_FOR_ERROR(WSAECONNABORTED, "Software caused connection abort.");
1229 TEXT_FOR_ERROR(WSAECONNREFUSED, "Connection refused.");
1230 TEXT_FOR_ERROR(WSAECONNRESET, "Connection reset by peer.");
1231 TEXT_FOR_ERROR(WSAEDESTADDRREQ, "Destination address required.");
1232 TEXT_FOR_ERROR(WSAEFAULT, "Bad address.");
1233 TEXT_FOR_ERROR(WSAEHOSTDOWN, "Host is down.");
1234 TEXT_FOR_ERROR(WSAEHOSTUNREACH, "No route to host.");
1235 TEXT_FOR_ERROR(WSAEINPROGRESS, "Operation now in progress.");
1236 TEXT_FOR_ERROR(WSAEINTR, "Interrupted function call.");
1237 TEXT_FOR_ERROR(WSAEINVAL, "Invalid argument.");
1238 TEXT_FOR_ERROR(WSAEISCONN, "Socket is already connected.");
1239 TEXT_FOR_ERROR(WSAEMFILE, "Too many open sockets.");
1240 TEXT_FOR_ERROR(WSAEMSGSIZE, "Message too long.");
1241 TEXT_FOR_ERROR(WSAENETDOWN, "Network is down.");
1242 TEXT_FOR_ERROR(WSAENETRESET, "Network dropped connection on reset.");
1243 TEXT_FOR_ERROR(WSAENETUNREACH, "Network is unreachable.");
1244 TEXT_FOR_ERROR(WSAENOBUFS, "No buffer space available.");
1245 TEXT_FOR_ERROR(WSAENOPROTOOPT, "Bad protocol option.");
1246 TEXT_FOR_ERROR(WSAENOTCONN, "Socket is not connected.");
1247 TEXT_FOR_ERROR(WSAENOTSOCK, "Socket operation on non-socket.");
1248 TEXT_FOR_ERROR(WSAEOPNOTSUPP, "Operation not supported.");
1249 TEXT_FOR_ERROR(WSAEPFNOSUPPORT, "Protocol family not supported.");
1250 TEXT_FOR_ERROR(WSAEPROCLIM, "Too many processes.");
1251 TEXT_FOR_ERROR(WSAEPROTONOSUPPORT, "Protocol not supported.");
1252 TEXT_FOR_ERROR(WSAEPROTOTYPE, "Protocol wrong type for socket.");
1253 TEXT_FOR_ERROR(WSAESHUTDOWN, "Cannot send after socket shutdown.");
1254 TEXT_FOR_ERROR(WSAESOCKTNOSUPPORT, "Socket type not supported.");
1255 TEXT_FOR_ERROR(WSAETIMEDOUT, "Connection timed out.");
1256 TEXT_FOR_ERROR(WSAEWOULDBLOCK, "Resource temporarily unavailable.");
1257 TEXT_FOR_ERROR(WSAHOST_NOT_FOUND, "Host not found.");
1258 TEXT_FOR_ERROR(WSANOTINITIALISED, "Successful WSAStartup not yet performed.");
1259 TEXT_FOR_ERROR(WSANO_DATA, "Valid name, no data record of requested type.");
1260 TEXT_FOR_ERROR(WSANO_RECOVERY, "This is a non-recoverable error.");
1261 TEXT_FOR_ERROR(WSASYSNOTREADY, "Network subsystem is unavailable.");
1262 TEXT_FOR_ERROR(WSATRY_AGAIN, "Non-authoritative host not found.");
1263 TEXT_FOR_ERROR(WSAVERNOTSUPPORTED, "WINSOCK.DLL version out of range.");
1264 TEXT_FOR_ERROR(WSAEDISCON, "Graceful shutdown in progress.");
1266 * The following error codes are documented in the Microsoft WinSock
1267 * reference guide, but don't actually exist.
1269 * TEXT_FOR_ERROR(WSA_INVALID_HANDLE, "Specified event object handle is invalid.");
1270 * TEXT_FOR_ERROR(WSA_INVALID_PARAMETER, "One or more parameters are invalid.");
1271 * TEXT_FOR_ERROR(WSAINVALIDPROCTABLE, "Invalid procedure table from service provider.");
1272 * TEXT_FOR_ERROR(WSAINVALIDPROVIDER, "Invalid service provider version number.");
1273 * TEXT_FOR_ERROR(WSA_IO_PENDING, "Overlapped operations will complete later.");
1274 * TEXT_FOR_ERROR(WSA_IO_INCOMPLETE, "Overlapped I/O event object not in signaled state.");
1275 * TEXT_FOR_ERROR(WSA_NOT_ENOUGH_MEMORY, "Insufficient memory available.");
1276 * TEXT_FOR_ERROR(WSAPROVIDERFAILEDINIT, "Unable to initialize a service provider.");
1277 * TEXT_FOR_ERROR(WSASYSCALLFAILURE, "System call failure.");
1278 * TEXT_FOR_ERROR(WSA_OPERATION_ABORTED, "Overlapped operation aborted.");
1281 sprintf(tmp_buf, "(error number %d)", errcode);
1284 #endif /* def _WIN32 */
1288 /*********************************************************************
1290 * Function : os2_socket_strerr
1292 * Description : Translate the return value from sock_errno()
1296 * 1 : errcode = The return value from sock_errno().
1297 * 2 : tmp_buf = A temporary buffer that might be used to
1300 * Returns : String representing the error code. This may be
1301 * a global string constant or a string stored in
1304 *********************************************************************/
1305 static char *os2_socket_strerr(int errcode, char *tmp_buf)
1307 #define TEXT_FOR_ERROR(code,text) \
1308 if (errcode == code) \
1310 return #code " - " text; \
1313 TEXT_FOR_ERROR(SOCEPERM , "Not owner.")
1314 TEXT_FOR_ERROR(SOCESRCH , "No such process.")
1315 TEXT_FOR_ERROR(SOCEINTR , "Interrupted system call.")
1316 TEXT_FOR_ERROR(SOCENXIO , "No such device or address.")
1317 TEXT_FOR_ERROR(SOCEBADF , "Bad file number.")
1318 TEXT_FOR_ERROR(SOCEACCES , "Permission denied.")
1319 TEXT_FOR_ERROR(SOCEFAULT , "Bad address.")
1320 TEXT_FOR_ERROR(SOCEINVAL , "Invalid argument.")
1321 TEXT_FOR_ERROR(SOCEMFILE , "Too many open files.")
1322 TEXT_FOR_ERROR(SOCEPIPE , "Broken pipe.")
1323 TEXT_FOR_ERROR(SOCEWOULDBLOCK , "Operation would block.")
1324 TEXT_FOR_ERROR(SOCEINPROGRESS , "Operation now in progress.")
1325 TEXT_FOR_ERROR(SOCEALREADY , "Operation already in progress.")
1326 TEXT_FOR_ERROR(SOCENOTSOCK , "Socket operation on non-socket.")
1327 TEXT_FOR_ERROR(SOCEDESTADDRREQ , "Destination address required.")
1328 TEXT_FOR_ERROR(SOCEMSGSIZE , "Message too long.")
1329 TEXT_FOR_ERROR(SOCEPROTOTYPE , "Protocol wrong type for socket.")
1330 TEXT_FOR_ERROR(SOCENOPROTOOPT , "Protocol not available.")
1331 TEXT_FOR_ERROR(SOCEPROTONOSUPPORT, "Protocol not supported.")
1332 TEXT_FOR_ERROR(SOCESOCKTNOSUPPORT, "Socket type not supported.")
1333 TEXT_FOR_ERROR(SOCEOPNOTSUPP , "Operation not supported.")
1334 TEXT_FOR_ERROR(SOCEPFNOSUPPORT , "Protocol family not supported.")
1335 TEXT_FOR_ERROR(SOCEAFNOSUPPORT , "Address family not supported by protocol family.")
1336 TEXT_FOR_ERROR(SOCEADDRINUSE , "Address already in use.")
1337 TEXT_FOR_ERROR(SOCEADDRNOTAVAIL , "Can't assign requested address.")
1338 TEXT_FOR_ERROR(SOCENETDOWN , "Network is down.")
1339 TEXT_FOR_ERROR(SOCENETUNREACH , "Network is unreachable.")
1340 TEXT_FOR_ERROR(SOCENETRESET , "Network dropped connection on reset.")
1341 TEXT_FOR_ERROR(SOCECONNABORTED , "Software caused connection abort.")
1342 TEXT_FOR_ERROR(SOCECONNRESET , "Connection reset by peer.")
1343 TEXT_FOR_ERROR(SOCENOBUFS , "No buffer space available.")
1344 TEXT_FOR_ERROR(SOCEISCONN , "Socket is already connected.")
1345 TEXT_FOR_ERROR(SOCENOTCONN , "Socket is not connected.")
1346 TEXT_FOR_ERROR(SOCESHUTDOWN , "Can't send after socket shutdown.")
1347 TEXT_FOR_ERROR(SOCETOOMANYREFS , "Too many references: can't splice.")
1348 TEXT_FOR_ERROR(SOCETIMEDOUT , "Operation timed out.")
1349 TEXT_FOR_ERROR(SOCECONNREFUSED , "Connection refused.")
1350 TEXT_FOR_ERROR(SOCELOOP , "Too many levels of symbolic links.")
1351 TEXT_FOR_ERROR(SOCENAMETOOLONG , "File name too long.")
1352 TEXT_FOR_ERROR(SOCEHOSTDOWN , "Host is down.")
1353 TEXT_FOR_ERROR(SOCEHOSTUNREACH , "No route to host.")
1354 TEXT_FOR_ERROR(SOCENOTEMPTY , "Directory not empty.")
1355 TEXT_FOR_ERROR(SOCEOS2ERR , "OS/2 Error.")
1357 sprintf(tmp_buf, "(error number %d)", errcode);
1360 #endif /* def __OS2__ */