1 const char errlog_rcs[] = "$Id: errlog.c,v 1.6 2001/05/25 21:55:08 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 1.6 2001/05/25 21:55:08 jongfoster
37 * Now cleans up properly on FATAL (removes taskbar icon etc)
39 * Revision 1.5 2001/05/22 18:46:04 oes
41 * - Enabled filtering banners by size rather than URL
42 * by adding patterns that replace all standard banner
43 * sizes with the "Junkbuster" gif to the re_filterfile
45 * - Enabled filtering WebBugs by providing a pattern
46 * which kills all 1x1 images
48 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
49 * which is selected by the (nonstandard and therefore
50 * capital) letter 'U' in the option string.
51 * It causes the quantifiers to be ungreedy by default.
52 * Appending a ? turns back to greedy (!).
54 * - Added a new interceptor ijb-send-banner, which
55 * sends back the "Junkbuster" gif. Without imagelist or
56 * MSIE detection support, or if tinygif = 1, or the
57 * URL isn't recognized as an imageurl, a lame HTML
58 * explanation is sent instead.
60 * - Added new feature, which permits blocking remote
61 * script redirects and firing back a local redirect
63 * The feature is conditionally compiled, i.e. it
64 * can be disabled with --disable-fast-redirects,
65 * plus it must be activated by a "fast-redirects"
66 * line in the config file, has its own log level
67 * and of course wants to be displayed by show-proxy-args
68 * Note: Boy, all the #ifdefs in 1001 locations and
69 * all the fumbling with configure.in and acconfig.h
70 * were *way* more work than the feature itself :-(
72 * - Because a generic redirect template was needed for
73 * this, tinygif = 3 now uses the same.
75 * - Moved GIFs, and other static HTTP response templates
80 * - Removed some >400 CRs again (Jon, you really worked
83 * Revision 1.4 2001/05/21 19:32:54 jongfoster
84 * Added another #ifdef _WIN_CONSOLE
86 * Revision 1.3 2001/05/20 01:11:40 jongfoster
87 * Added support for LOG_LEVEL_FATAL
88 * Renamed LOG_LEVEL_FRC to LOG_LEVEL_FORCE,
89 * and LOG_LEVEL_REF to LOG_LEVEL_RE_FILTER
91 * Revision 1.2 2001/05/17 22:42:01 oes
92 * - Cleaned CRLF's from the sources and related files
93 * - Repaired logging for REF and FRC
95 * Revision 1.1.1.1 2001/05/15 13:58:51 oes
96 * Initial import of version 2.9.3 source tree
99 *********************************************************************/
111 #endif /* ndef _WIN32 */
114 /* #include <pthread.h> */
120 #endif /* ndef _WIN_CONSOLE */
121 #endif /* def _WIN32 */
126 const char errlog_h_rcs[] = ERRLOG_H_VERSION;
130 * LOG_LEVEL_FATAL, LOG_LEVEL_ERROR and LOG_LEVEL_INFO
131 * cannot be turned off. (There are some exceptional situations
132 * where we need to get a message to the user).
134 * FIXME: Do we need LOG_LEVEL_INFO here?
136 #define LOG_LEVEL_MINIMUM (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR | LOG_LEVEL_INFO)
138 /* where to log (default: stderr) */
139 static FILE *logfp = NULL;
141 /* where to log (NULL == stderr) */
142 static char * logfilename = NULL;
144 /* logging detail level. */
145 static int debug = LOG_LEVEL_MINIMUM;
147 static void fatal_error(const char * error_message);
150 /*********************************************************************
152 * Function : fatal_error
154 * Description : Displays a fatal error to standard error (or, on
155 * a WIN32 GUI, to a dialog box), and exits
156 * JunkBuster with status code 1.
159 * 1 : error_message = The error message to display.
161 * Returns : Does not return.
163 *********************************************************************/
164 static void fatal_error(const char * error_message)
166 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
167 MessageBox(g_hwndLogFrame, error_message, "Internet JunkBuster Error",
168 MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST);
170 /* Cleanup - remove taskbar icon etc. */
173 #else /* if !defined(_WIN32) || defined(_WIN_CONSOLE) */
174 fputs(error_message, stderr);
175 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
181 /*********************************************************************
183 * Function : init_errlog
185 * Description : Initializes the logging module. Must call before
189 * 1 : prog_name = The program name.
190 * 2 : logfname = The logfile name, or NULL for stderr.
191 * 3 : debuglevel = The debugging level.
195 *********************************************************************/
196 void init_error_log(const char *prog_name, const char *logfname, int debuglevel)
200 /* FIXME RACE HAZARD: should start critical section error_log_use here */
202 /* set the logging detail level */
203 debug = debuglevel | LOG_LEVEL_MINIMUM;
205 if ((logfp != NULL) && (logfp != stderr))
211 /* set the designated log file */
214 if( !(fp = fopen(logfname, "a")) )
216 log_error(LOG_LEVEL_FATAL, "init_errlog(): can't open logfile: %s", logfname);
219 /* set logging to be completely unbuffered */
225 log_error(LOG_LEVEL_INFO, "Internet JunkBuster version " VERSION);
226 if (prog_name != NULL)
228 log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name);
231 /* FIXME RACE HAZARD: should end critical section error_log_use here */
233 } /* init_error_log */
236 /*********************************************************************
238 * Function : log_error
240 * Description : This is the error-reporting and logging function.
243 * 1 : loglevel = the type of message to be logged
244 * 2 : fmt = the main string we want logged, printf-like
245 * 3 : ... = arguments to be inserted in fmt (printf-like).
249 *********************************************************************/
250 void log_error(int loglevel, char *fmt, ...)
256 long this_thread = 1; /* was: pthread_t this_thread;*/
258 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
\r
260 * Irrespective of debug setting, a GET/POST/CONNECT makes
\r
261 * the taskbar icon animate. (There is an option to disable
\r
262 * this but checking that is handled inside LogShowActivity()).
\r
264 if (loglevel == LOG_LEVEL_GPC)
\r
268 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
\r
270 /* verify if loglevel applies to current settings and bail out if negative */
271 if(!(loglevel & debug))
276 /* FIXME get current thread id */
277 /* this_thread = (long)pthread_self(); */
281 /* FIXME: What about LOG_LEVEL_LOG ??? */
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);
294 case LOG_LEVEL_HEADER:
295 outc = sprintf(outbuf, "IJB(%d) Header: ", this_thread);
298 outc = sprintf(outbuf, "IJB(%d) Info: ", this_thread);
301 case LOG_LEVEL_RE_FILTER:
302 outc = sprintf(outbuf, "IJB(%d) Re-Filter: ", this_thread);
304 #endif /* def PCRS */
306 case LOG_LEVEL_FORCE:
307 outc = sprintf(outbuf, "IJB(%d) Force: ", this_thread);
309 #endif /* def FORCE_LOAD */
310 #ifdef FAST_REDIRECTS
311 case LOG_LEVEL_REDIRECTS:
312 outc = sprintf(outbuf, "IJB(%d) Redirect: ", this_thread);
314 #endif /* def FAST_REDIRECTS */
316 outc = sprintf(outbuf, "IJB(%d) UNKNOWN LOG TYPE(%d): ", this_thread, loglevel);
320 /* get ready to scan var. args. */
323 /* build formatted message from fmt and var-args */
324 while ((*src) && (outc < BUFSIZ-2))
326 char tempbuf[BUFSIZ];
345 outbuf[outc++] = '%';
348 ival = va_arg( ap, int );
350 outc += sprintf(tempbuf, "%d", ival);
353 strcpy(outbuf + oldoutc, tempbuf);
357 outbuf[oldoutc] = '\0';
361 uval = va_arg( ap, unsigned );
363 outc += sprintf(tempbuf, "%u", uval);
366 strcpy(outbuf + oldoutc, tempbuf);
370 outbuf[oldoutc] = '\0';
374 /* this is a modifier that must be followed by u or d */
378 lval = va_arg( ap, long );
380 outc += sprintf(tempbuf, "%ld", lval);
384 ulval = va_arg( ap, unsigned long );
386 outc += sprintf(tempbuf, "%lu", ulval);
391 sprintf(outbuf, "IJB(%d) Error: log_error(): Bad format string:\n"
393 "Exiting.", this_thread, fmt);
394 /* FIXME RACE HAZARD: should start critical section error_log_use here */
399 fputs(outbuf, logfp);
400 /* FIXME RACE HAZARD: should end critical section error_log_use here */
407 strcpy(outbuf + oldoutc, tempbuf);
411 outbuf[oldoutc] = '\0';
416 * Note that char paramaters are converted to int, so we need to
417 * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202)
419 outbuf[outc++] = (char) va_arg( ap, int );
422 sval = va_arg( ap, char * );
424 outc += strlen(sval);
427 strcpy(outbuf + oldoutc, sval);
431 outbuf[oldoutc] = '\0';
435 /* Non-standard: Print error code from errno */
438 sval = strerror(ival);
439 #else /* def NOSTRERROR */
441 #endif /* def NOSTRERROR */
444 sprintf(tempbuf, "(errno = %d)", ival);
448 outc += strlen(sval);
451 strcpy(outbuf + oldoutc, sval);
455 outbuf[oldoutc] = '\0';
459 sprintf(outbuf, "IJB(%d) Error: log_error(): Bad format string:\n"
461 "Exiting.", this_thread, fmt);
462 /* FIXME RACE HAZARD: should start critical section error_log_use here */
467 fputs(outbuf, logfp);
468 /* FIXME RACE HAZARD: should end critical section error_log_use here */
477 /* done with var. args */
480 if (outc >= BUFSIZ-2)
482 /* insufficient room for newline and trailing null. */
484 static const char warning[] = "... [too long, truncated]\n";
488 /* Need to add terminating null in this case. */
492 /* Truncate output */
493 outbuf[BUFSIZ - sizeof(warning)] = '\0';
496 strcat(outbuf, warning);
500 /* Add terminating newline and null */
501 outbuf[outc++] = '\n';
505 /* FIXME RACE HAZARD: should start critical section error_log_use here */
507 /* deal with glibc stupidity - it won't let you initialize logfp */
513 fputs(outbuf, logfp);
515 if (loglevel == LOG_LEVEL_FATAL)
521 /* FIXME RACE HAZARD: should end critical section error_log_use here */
523 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
524 /* Write to display */
525 LogPutString(outbuf);
526 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */