1 const char errlog_rcs[] = "$Id: errlog.c,v 1.7 2001/05/26 15:21:28 jongfoster 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 the SourceForge
10 * IJBSWA team. http://ijbswa.sourceforge.net
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 1.7 2001/05/26 15:21:28 jongfoster
37 * Activity animation in Win32 GUI now works even if debug==0
39 * Revision 1.6 2001/05/25 21:55:08 jongfoster
40 * Now cleans up properly on FATAL (removes taskbar icon etc)
42 * Revision 1.5 2001/05/22 18:46:04 oes
44 * - Enabled filtering banners by size rather than URL
45 * by adding patterns that replace all standard banner
46 * sizes with the "Junkbuster" gif to the re_filterfile
48 * - Enabled filtering WebBugs by providing a pattern
49 * which kills all 1x1 images
51 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
52 * which is selected by the (nonstandard and therefore
53 * capital) letter 'U' in the option string.
54 * It causes the quantifiers to be ungreedy by default.
55 * Appending a ? turns back to greedy (!).
57 * - Added a new interceptor ijb-send-banner, which
58 * sends back the "Junkbuster" gif. Without imagelist or
59 * MSIE detection support, or if tinygif = 1, or the
60 * URL isn't recognized as an imageurl, a lame HTML
61 * explanation is sent instead.
63 * - Added new feature, which permits blocking remote
64 * script redirects and firing back a local redirect
66 * The feature is conditionally compiled, i.e. it
67 * can be disabled with --disable-fast-redirects,
68 * plus it must be activated by a "fast-redirects"
69 * line in the config file, has its own log level
70 * and of course wants to be displayed by show-proxy-args
71 * Note: Boy, all the #ifdefs in 1001 locations and
72 * all the fumbling with configure.in and acconfig.h
73 * were *way* more work than the feature itself :-(
75 * - Because a generic redirect template was needed for
76 * this, tinygif = 3 now uses the same.
78 * - Moved GIFs, and other static HTTP response templates
83 * - Removed some >400 CRs again (Jon, you really worked
86 * Revision 1.4 2001/05/21 19:32:54 jongfoster
87 * Added another #ifdef _WIN_CONSOLE
89 * Revision 1.3 2001/05/20 01:11:40 jongfoster
90 * Added support for LOG_LEVEL_FATAL
91 * Renamed LOG_LEVEL_FRC to LOG_LEVEL_FORCE,
92 * and LOG_LEVEL_REF to LOG_LEVEL_RE_FILTER
94 * Revision 1.2 2001/05/17 22:42:01 oes
95 * - Cleaned CRLF's from the sources and related files
96 * - Repaired logging for REF and FRC
98 * Revision 1.1.1.1 2001/05/15 13:58:51 oes
99 * Initial import of version 2.9.3 source tree
102 *********************************************************************/
114 #endif /* ndef _WIN32 */
117 /* #include <pthread.h> */
123 #endif /* ndef _WIN_CONSOLE */
124 #endif /* def _WIN32 */
129 const char errlog_h_rcs[] = ERRLOG_H_VERSION;
133 * LOG_LEVEL_FATAL cannot be turned off. (There are
134 * some exceptional situations where we need to get a
135 * message to the user).
137 #define LOG_LEVEL_MINIMUM LOG_LEVEL_FATAL
139 /* where to log (default: stderr) */
140 static FILE *logfp = NULL;
142 /* where to log (NULL == stderr) */
143 static char * logfilename = NULL;
145 /* logging detail level. */
146 static int debug = (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR | LOG_LEVEL_INFO);
148 static void fatal_error(const char * error_message);
151 /*********************************************************************
153 * Function : fatal_error
155 * Description : Displays a fatal error to standard error (or, on
156 * a WIN32 GUI, to a dialog box), and exits
157 * JunkBuster with status code 1.
160 * 1 : error_message = The error message to display.
162 * Returns : Does not return.
164 *********************************************************************/
165 static void fatal_error(const char * error_message)
167 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
168 MessageBox(g_hwndLogFrame, error_message, "Internet JunkBuster Error",
169 MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST);
171 /* Cleanup - remove taskbar icon etc. */
174 #else /* if !defined(_WIN32) || defined(_WIN_CONSOLE) */
175 fputs(error_message, stderr);
176 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
182 /*********************************************************************
184 * Function : init_errlog
186 * Description : Initializes the logging module. Must call before
190 * 1 : prog_name = The program name.
191 * 2 : logfname = The logfile name, or NULL for stderr.
192 * 3 : debuglevel = The debugging level.
196 *********************************************************************/
197 void init_error_log(const char *prog_name, const char *logfname, int debuglevel)
201 /* FIXME RACE HAZARD: should start critical section error_log_use here */
203 /* set the logging detail level */
204 debug = debuglevel | LOG_LEVEL_MINIMUM;
206 if ((logfp != NULL) && (logfp != stderr))
212 /* set the designated log file */
215 if( !(fp = fopen(logfname, "a")) )
217 log_error(LOG_LEVEL_FATAL, "init_errlog(): can't open logfile: %s", logfname);
220 /* set logging to be completely unbuffered */
226 log_error(LOG_LEVEL_INFO, "Internet JunkBuster version " VERSION);
227 if (prog_name != NULL)
229 log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name);
232 /* FIXME RACE HAZARD: should end critical section error_log_use here */
234 } /* init_error_log */
237 /*********************************************************************
239 * Function : log_error
241 * Description : This is the error-reporting and logging function.
244 * 1 : loglevel = the type of message to be logged
245 * 2 : fmt = the main string we want logged, printf-like
246 * 3 : ... = arguments to be inserted in fmt (printf-like).
250 *********************************************************************/
251 void log_error(int loglevel, char *fmt, ...)
257 long this_thread = 1; /* was: pthread_t this_thread;*/
259 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
261 * Irrespective of debug setting, a GET/POST/CONNECT makes
262 * the taskbar icon animate. (There is an option to disable
263 * this but checking that is handled inside LogShowActivity()).
265 if (loglevel == LOG_LEVEL_GPC)
269 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
271 /* verify if loglevel applies to current settings and bail out if negative */
272 if ((loglevel & debug) == 0)
277 /* FIXME get current thread id */
278 /* this_thread = (long)pthread_self(); */
282 case LOG_LEVEL_ERROR:
283 outc = sprintf(outbuf, "IJB(%d) Error: ", this_thread);
285 case LOG_LEVEL_FATAL:
286 outc = sprintf(outbuf, "IJB(%d) Fatal error: ", this_thread);
289 outc = sprintf(outbuf, "IJB(%d) Request: ", this_thread);
291 case LOG_LEVEL_CONNECT:
292 outc = sprintf(outbuf, "IJB(%d) Connect: ", this_thread);
295 outc = sprintf(outbuf, "IJB(%d) Writing: ", this_thread);
297 case LOG_LEVEL_HEADER:
298 outc = sprintf(outbuf, "IJB(%d) Header: ", this_thread);
301 outc = sprintf(outbuf, "IJB(%d) Info: ", this_thread);
304 case LOG_LEVEL_RE_FILTER:
305 outc = sprintf(outbuf, "IJB(%d) Re-Filter: ", this_thread);
307 #endif /* def PCRS */
309 case LOG_LEVEL_FORCE:
310 outc = sprintf(outbuf, "IJB(%d) Force: ", this_thread);
312 #endif /* def FORCE_LOAD */
313 #ifdef FAST_REDIRECTS
314 case LOG_LEVEL_REDIRECTS:
315 outc = sprintf(outbuf, "IJB(%d) Redirect: ", this_thread);
317 #endif /* def FAST_REDIRECTS */
323 outc = sprintf(outbuf, "IJB(%d) UNKNOWN LOG TYPE(%d): ", this_thread, loglevel);
327 /* get ready to scan var. args. */
330 /* build formatted message from fmt and var-args */
331 while ((*src) && (outc < BUFSIZ-2))
333 char tempbuf[BUFSIZ];
352 outbuf[outc++] = '%';
355 ival = va_arg( ap, int );
357 outc += sprintf(tempbuf, "%d", ival);
360 strcpy(outbuf + oldoutc, tempbuf);
364 outbuf[oldoutc] = '\0';
368 uval = va_arg( ap, unsigned );
370 outc += sprintf(tempbuf, "%u", uval);
373 strcpy(outbuf + oldoutc, tempbuf);
377 outbuf[oldoutc] = '\0';
381 /* this is a modifier that must be followed by u or d */
385 lval = va_arg( ap, long );
387 outc += sprintf(tempbuf, "%ld", lval);
391 ulval = va_arg( ap, unsigned long );
393 outc += sprintf(tempbuf, "%lu", ulval);
398 sprintf(outbuf, "IJB(%d) Error: log_error(): Bad format string:\n"
400 "Exiting.", this_thread, fmt);
401 /* FIXME RACE HAZARD: should start critical section error_log_use here */
406 fputs(outbuf, logfp);
407 /* FIXME RACE HAZARD: should end critical section error_log_use here */
414 strcpy(outbuf + oldoutc, tempbuf);
418 outbuf[oldoutc] = '\0';
423 * Note that char paramaters are converted to int, so we need to
424 * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202)
426 outbuf[outc++] = (char) va_arg( ap, int );
429 sval = va_arg( ap, char * );
431 outc += strlen(sval);
434 strcpy(outbuf + oldoutc, sval);
438 outbuf[oldoutc] = '\0';
442 /* Non-standard: Print a counted string. Takes 2 parameters:
443 * int length, const char * string
445 ival = va_arg( ap, int );
446 sval = va_arg( ap, char * );
455 memcpy(outbuf + oldoutc, sval, ival);
459 outbuf[oldoutc] = '\0';
463 /* Non-standard: Print error code from errno */
466 sval = strerror(ival);
467 #else /* def NOSTRERROR */
469 #endif /* def NOSTRERROR */
472 sprintf(tempbuf, "(errno = %d)", ival);
476 outc += strlen(sval);
479 strcpy(outbuf + oldoutc, sval);
483 outbuf[oldoutc] = '\0';
487 /* Non-standard: Print a Common Log File timestamp */
490 * Write timestamp into tempbuf.
492 * Complex because not all OSs have tm_gmtoff or
493 * the %z field in strftime()
500 gmt = *gmtime (&now);
501 tm_now = localtime (&now);
502 days = tm_now->tm_yday - gmt.tm_yday;
503 hrs = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + tm_now->tm_hour - gmt.tm_hour);
504 mins = hrs * 60 + tm_now->tm_min - gmt.tm_min;
505 strftime (tempbuf, BUFSIZ-6, "%d/%b/%Y:%H:%M:%S ", tm_now);
506 sprintf (tempbuf + strlen(tempbuf), "%+03d%02d", mins / 60, abs(mins) % 60);
509 outc += strlen(tempbuf);
512 strcpy(outbuf + oldoutc, tempbuf);
516 outbuf[oldoutc] = '\0';
520 sprintf(outbuf, "IJB(%d) Error: log_error(): Bad format string:\n"
522 "Exiting.", this_thread, fmt);
523 /* FIXME RACE HAZARD: should start critical section error_log_use here */
528 fputs(outbuf, logfp);
529 /* FIXME RACE HAZARD: should end critical section error_log_use here */
538 /* done with var. args */
541 if (outc >= BUFSIZ-2)
543 /* insufficient room for newline and trailing null. */
545 static const char warning[] = "... [too long, truncated]\n";
549 /* Need to add terminating null in this case. */
553 /* Truncate output */
554 outbuf[BUFSIZ - sizeof(warning)] = '\0';
557 strcat(outbuf, warning);
561 /* Add terminating newline and null */
562 outbuf[outc++] = '\n';
566 /* FIXME RACE HAZARD: should start critical section error_log_use here */
568 /* deal with glibc stupidity - it won't let you initialize logfp */
574 fputs(outbuf, logfp);
576 if (loglevel == LOG_LEVEL_FATAL)
582 /* FIXME RACE HAZARD: should end critical section error_log_use here */
584 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
585 /* Write to display */
586 LogPutString(outbuf);
587 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */