1 const char errlog_rcs[] = "$Id: errlog.c,v 1.32 2002/03/07 03:46:17 oes 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 1.32 2002/03/07 03:46:17 oes
37 * Fixed compiler warnings
39 * Revision 1.31 2002/03/06 23:02:57 jongfoster
42 * Revision 1.30 2002/03/05 22:43:45 david__schmidt
43 * - Better error reporting on OS/2
44 * - Fix double-slash comment (oops)
46 * Revision 1.29 2002/03/04 23:45:13 jongfoster
47 * Printing thread ID if using Win32 native threads
49 * Revision 1.28 2002/03/04 17:59:59 oes
50 * Deleted deletePidFile(), cosmetics
52 * Revision 1.27 2002/03/04 02:08:01 david__schmidt
53 * Enable web editing of actions file on OS/2 (it had been broken all this time!)
55 * Revision 1.26 2002/01/09 19:05:45 steudten
56 * Fix big memory leak.
58 * Revision 1.25 2002/01/09 14:32:08 oes
59 * Added support for gmtime_r and localtime_r.
61 * Revision 1.24 2001/12/30 14:07:32 steudten
62 * - Add signal handling (unix)
63 * - Add SIGHUP handler (unix)
64 * - Add creation of pidfile (unix)
65 * - Add action 'top' in rc file (RH)
66 * - Add entry 'SIGNALS' to manpage
67 * - Add exit message to logfile (unix)
69 * Revision 1.23 2001/11/07 00:02:13 steudten
70 * Add line number in error output for lineparsing for
71 * actionsfile and configfile.
72 * Special handling for CLF added.
74 * Revision 1.22 2001/11/05 23:43:05 steudten
75 * Add time+date to log files.
77 * Revision 1.21 2001/10/25 03:40:47 david__schmidt
78 * Change in porting tactics: OS/2's EMX porting layer doesn't allow multiple
79 * threads to call select() simultaneously. So, it's time to do a real, live,
80 * native OS/2 port. See defines for __EMX__ (the porting layer) vs. __OS2__
81 * (native). Both versions will work, but using __OS2__ offers multi-threading.
83 * Revision 1.20 2001/09/16 23:04:34 jongfoster
86 * Revision 1.19 2001/09/13 20:08:06 jongfoster
87 * Adding support for LOG_LEVEL_CGI
89 * Revision 1.18 2001/09/10 11:27:24 oes
90 * Declaration of w32_socket_strerr now conditional
92 * Revision 1.17 2001/09/10 10:17:13 oes
93 * Removed unused variable; Fixed sprintf format
95 * Revision 1.16 2001/07/30 22:08:36 jongfoster
96 * Tidying up #defines:
97 * - All feature #defines are now of the form FEATURE_xxx
98 * - Permanently turned off WIN_GUI_EDIT
99 * - Permanently turned on WEBDAV and SPLIT_PROXY_ARGS
101 * Revision 1.15 2001/07/29 17:41:10 jongfoster
102 * Now prints thread ID for each message (pthreads only)
104 * Revision 1.14 2001/07/19 19:03:48 haroon
105 * - Added case for LOG_LEVEL_POPUPS
107 * Revision 1.13 2001/07/13 13:58:58 oes
108 * - Added case for LOG_LEVEL_DEANIMATE
109 * - Removed all #ifdef PCRS
111 * Revision 1.12 2001/06/09 10:55:28 jongfoster
112 * Changing BUFSIZ ==> BUFFER_SIZE
114 * Revision 1.11 2001/06/01 18:14:49 jongfoster
115 * Changing the calls to strerr() to check HAVE_STRERR (which is defined
116 * in config.h if appropriate) rather than the NO_STRERR macro.
118 * Revision 1.10 2001/05/29 11:52:21 oes
119 * Conditional compilation of w32_socket_error
121 * Revision 1.9 2001/05/28 16:15:17 jongfoster
122 * Improved reporting of errors under Win32.
124 * Revision 1.8 2001/05/26 17:25:14 jongfoster
125 * Added support for CLF (Common Log Format) and fixed LOG_LEVEL_LOG
127 * Revision 1.7 2001/05/26 15:21:28 jongfoster
128 * Activity animation in Win32 GUI now works even if debug==0
130 * Revision 1.6 2001/05/25 21:55:08 jongfoster
131 * Now cleans up properly on FATAL (removes taskbar icon etc)
133 * Revision 1.5 2001/05/22 18:46:04 oes
135 * - Enabled filtering banners by size rather than URL
136 * by adding patterns that replace all standard banner
137 * sizes with the "Junkbuster" gif to the re_filterfile
139 * - Enabled filtering WebBugs by providing a pattern
140 * which kills all 1x1 images
142 * - Added support for PCRE_UNGREEDY behaviour to pcrs,
143 * which is selected by the (nonstandard and therefore
144 * capital) letter 'U' in the option string.
145 * It causes the quantifiers to be ungreedy by default.
146 * Appending a ? turns back to greedy (!).
148 * - Added a new interceptor ijb-send-banner, which
149 * sends back the "Junkbuster" gif. Without imagelist or
150 * MSIE detection support, or if tinygif = 1, or the
151 * URL isn't recognized as an imageurl, a lame HTML
152 * explanation is sent instead.
154 * - Added new feature, which permits blocking remote
155 * script redirects and firing back a local redirect
157 * The feature is conditionally compiled, i.e. it
158 * can be disabled with --disable-fast-redirects,
159 * plus it must be activated by a "fast-redirects"
160 * line in the config file, has its own log level
161 * and of course wants to be displayed by show-proxy-args
162 * Note: Boy, all the #ifdefs in 1001 locations and
163 * all the fumbling with configure.in and acconfig.h
164 * were *way* more work than the feature itself :-(
166 * - Because a generic redirect template was needed for
167 * this, tinygif = 3 now uses the same.
169 * - Moved GIFs, and other static HTTP response templates
174 * - Removed some >400 CRs again (Jon, you really worked
177 * Revision 1.4 2001/05/21 19:32:54 jongfoster
178 * Added another #ifdef _WIN_CONSOLE
180 * Revision 1.3 2001/05/20 01:11:40 jongfoster
181 * Added support for LOG_LEVEL_FATAL
182 * Renamed LOG_LEVEL_FRC to LOG_LEVEL_FORCE,
183 * and LOG_LEVEL_REF to LOG_LEVEL_RE_FILTER
185 * Revision 1.2 2001/05/17 22:42:01 oes
186 * - Cleaned CRLF's from the sources and related files
187 * - Repaired logging for REF and FRC
189 * Revision 1.1.1.1 2001/05/15 13:58:51 oes
190 * Initial import of version 2.9.3 source tree
193 *********************************************************************/
197 #include "miscutil.h"
204 #if !defined(_WIN32) && !defined(__OS2__)
206 #endif /* !defined(_WIN32) && !defined(__OS2__) */
210 #ifdef FEATURE_PTHREAD
212 #endif /* def FEATURE_PTHREAD */
218 #endif /* ndef _WIN_CONSOLE */
219 #endif /* def _WIN32 */
230 const char errlog_h_rcs[] = ERRLOG_H_VERSION;
234 * LOG_LEVEL_FATAL cannot be turned off. (There are
235 * some exceptional situations where we need to get a
236 * message to the user).
238 #define LOG_LEVEL_MINIMUM LOG_LEVEL_FATAL
240 /* where to log (default: stderr) */
241 static FILE *logfp = NULL;
243 /* logging detail level. */
244 static int debug = (LOG_LEVEL_FATAL | LOG_LEVEL_ERROR | LOG_LEVEL_INFO);
246 /* static functions */
247 static void fatal_error(const char * error_message);
249 static char *w32_socket_strerr(int errcode, char *tmp_buf);
252 /*********************************************************************
254 * Function : fatal_error
256 * Description : Displays a fatal error to standard error (or, on
257 * a WIN32 GUI, to a dialog box), and exits
258 * JunkBuster with status code 1.
261 * 1 : error_message = The error message to display.
263 * Returns : Does not return.
265 *********************************************************************/
266 static void fatal_error(const char * error_message)
268 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
269 MessageBox(g_hwndLogFrame, error_message, "Internet JunkBuster Error",
270 MB_OK | MB_ICONERROR | MB_TASKMODAL | MB_SETFOREGROUND | MB_TOPMOST);
272 /* Cleanup - remove taskbar icon etc. */
275 #else /* if !defined(_WIN32) || defined(_WIN_CONSOLE) */
276 fputs(error_message, stderr);
277 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
287 /*********************************************************************
289 * Function : init_error_log
291 * Description : Initializes the logging module. Must call before
295 * 1 : prog_name = The program name.
296 * 2 : logfname = The logfile name, or NULL for stderr.
297 * 3 : debuglevel = The debugging level.
301 *********************************************************************/
302 void init_error_log(const char *prog_name, const char *logfname, int debuglevel)
306 /* FIXME RACE HAZARD: should start critical section error_log_use here */
308 /* set the logging detail level */
309 debug = debuglevel | LOG_LEVEL_MINIMUM;
311 if ((logfp != NULL) && (logfp != stderr))
313 log_error(LOG_LEVEL_INFO, "(Re-)Open logfile %s", logfname ? logfname : "none");
318 /* set the designated log file */
321 if( NULL == (fp = fopen(logfname, "a")) )
323 log_error(LOG_LEVEL_FATAL, "init_error_log(): can't open logfile: %s", logfname);
326 /* set logging to be completely unbuffered */
332 log_error(LOG_LEVEL_INFO, "Internet JunkBuster version " VERSION);
333 if (prog_name != NULL)
335 log_error(LOG_LEVEL_INFO, "Program name: %s", prog_name);
338 /* FIXME RACE HAZARD: should end critical section error_log_use here */
340 } /* init_error_log */
343 /*********************************************************************
345 * Function : log_error
347 * Description : This is the error-reporting and logging function.
350 * 1 : loglevel = the type of message to be logged
351 * 2 : fmt = the main string we want logged, printf-like
352 * 3 : ... = arguments to be inserted in fmt (printf-like).
356 *********************************************************************/
357 void log_error(int loglevel, char *fmt, ...)
361 static char *outbuf_save = NULL;
364 long this_thread = 1; /* was: pthread_t this_thread;*/
370 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
372 * Irrespective of debug setting, a GET/POST/CONNECT makes
373 * the taskbar icon animate. (There is an option to disable
374 * this but checking that is handled inside LogShowActivity()).
376 if (loglevel == LOG_LEVEL_GPC)
380 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
382 /* verify if loglevel applies to current settings and bail out if negative */
383 if ((loglevel & debug) == 0)
388 /* FIXME get current thread id */
389 #ifdef FEATURE_PTHREAD
390 this_thread = (long)pthread_self();
391 #elif defined(_WIN32)
392 this_thread = GetCurrentThreadId();
393 #elif defined(__OS2__)
394 ulrc = DosGetInfoBlocks(&ptib, NULL);
396 this_thread = ptib -> tib_ptib2 -> tib2_ultid;
397 #endif /* def FEATURE_PTHREAD */
401 outbuf_save = outbuf = (char*)malloc(BUFFER_SIZE);
404 outbuf = outbuf_save;
408 * Write timestamp into tempbuf.
410 * Complex because not all OSs have tm_gmtoff or
411 * the %z field in strftime()
416 #ifdef HAVE_LOCALTIME_R
417 tm_now = *localtime_r(&now, &tm_now);
419 tm_now = *localtime (&now);
421 strftime(outbuf, BUFFER_SIZE-6, "%b %d %H:%M:%S ", &tm_now);
422 outbuf += strlen( outbuf );
426 case LOG_LEVEL_ERROR:
427 outc = sprintf(outbuf, "IJB(%ld) Error: ", this_thread);
429 case LOG_LEVEL_FATAL:
430 outc = sprintf(outbuf, "IJB(%ld) Fatal error: ", this_thread);
433 outc = sprintf(outbuf, "IJB(%ld) Request: ", this_thread);
435 case LOG_LEVEL_CONNECT:
436 outc = sprintf(outbuf, "IJB(%ld) Connect: ", this_thread);
439 outc = sprintf(outbuf, "IJB(%ld) Writing: ", this_thread);
441 case LOG_LEVEL_HEADER:
442 outc = sprintf(outbuf, "IJB(%ld) Header: ", this_thread);
445 outc = sprintf(outbuf, "IJB(%ld) Info: ", this_thread);
447 case LOG_LEVEL_RE_FILTER:
448 outc = sprintf(outbuf, "IJB(%ld) Re-Filter: ", this_thread);
450 #ifdef FEATURE_FORCE_LOAD
451 case LOG_LEVEL_FORCE:
452 outc = sprintf(outbuf, "IJB(%ld) Force: ", this_thread);
454 #endif /* def FEATURE_FORCE_LOAD */
455 #ifdef FEATURE_FAST_REDIRECTS
456 case LOG_LEVEL_REDIRECTS:
457 outc = sprintf(outbuf, "IJB(%ld) Redirect: ", this_thread);
459 #endif /* def FEATURE_FAST_REDIRECTS */
460 case LOG_LEVEL_DEANIMATE:
461 outc = sprintf(outbuf, "IJB(%ld) Gif-Deanimate: ", this_thread);
464 outbuf = outbuf_save;
468 #ifdef FEATURE_KILL_POPUPS
469 case LOG_LEVEL_POPUPS:
470 outc = sprintf(outbuf, "IJB(%ld) Kill-Popups: ", this_thread);
472 #endif /* def FEATURE_KILL_POPUPS */
474 outc = sprintf(outbuf, "IJB(%ld) CGI: ", this_thread);
477 outc = sprintf(outbuf, "IJB(%ld) UNKNOWN LOG TYPE(%d): ", this_thread, loglevel);
481 /* get ready to scan var. args. */
484 /* build formatted message from fmt and var-args */
485 while ((*src) && (outc < BUFFER_SIZE-2))
487 char tempbuf[BUFFER_SIZE];
506 outbuf[outc++] = '%';
509 ival = va_arg( ap, int );
511 outc += sprintf(tempbuf, "%d", ival);
512 if (outc < BUFFER_SIZE-1)
514 strcpy(outbuf + oldoutc, tempbuf);
518 outbuf[oldoutc] = '\0';
522 uval = va_arg( ap, unsigned );
524 outc += sprintf(tempbuf, "%u", uval);
525 if (outc < BUFFER_SIZE-1)
527 strcpy(outbuf + oldoutc, tempbuf);
531 outbuf[oldoutc] = '\0';
535 /* this is a modifier that must be followed by u or d */
539 lval = va_arg( ap, long );
541 outc += sprintf(tempbuf, "%ld", lval);
545 ulval = va_arg( ap, unsigned long );
547 outc += sprintf(tempbuf, "%lu", ulval);
552 sprintf(outbuf, "IJB(%ld) Error: log_error(): Bad format string:\n"
554 "Exiting.", this_thread, fmt);
555 /* FIXME RACE HAZARD: should start critical section error_log_use here */
560 fputs(outbuf, logfp);
561 /* FIXME RACE HAZARD: should end critical section error_log_use here */
566 if (outc < BUFFER_SIZE-1)
568 strcpy(outbuf + oldoutc, tempbuf);
572 outbuf[oldoutc] = '\0';
577 * Note that char paramaters are converted to int, so we need to
578 * pass "int" to va_arg. (See K&R, 2nd ed, section A7.3.2, page 202)
580 outbuf[outc++] = (char) va_arg( ap, int );
583 sval = va_arg( ap, char * );
585 outc += strlen(sval);
586 if (outc < BUFFER_SIZE-1)
588 strcpy(outbuf + oldoutc, sval);
592 outbuf[oldoutc] = '\0';
596 /* Non-standard: Print a counted string. Takes 2 parameters:
597 * int length, const char * string
599 ival = va_arg( ap, int );
600 sval = va_arg( ap, char * );
607 if (outc < BUFFER_SIZE-1)
609 memcpy(outbuf + oldoutc, sval, (size_t) ival);
613 outbuf[oldoutc] = '\0';
617 /* Non-standard: Print error code from errno */
619 ival = WSAGetLastError();
620 sval = w32_socket_strerr(ival, tempbuf);
625 sval = strerror(ival);
626 #else /* ifndef _WIN32 */
629 sval = strerror(ival);
630 #else /* ifndef HAVE_STRERROR */
632 #endif /* ndef HAVE_STRERROR */
635 sprintf(tempbuf, "(errno = %d)", ival);
638 #endif /* ndef _WIN32 */
640 outc += strlen(sval);
641 if (outc < BUFFER_SIZE-1)
643 strcpy(outbuf + oldoutc, sval);
647 outbuf[oldoutc] = '\0';
651 /* Non-standard: Print a Common Log File timestamp */
654 * Write timestamp into tempbuf.
656 * Complex because not all OSs have tm_gmtoff or
657 * the %z field in strftime()
662 #ifdef HAVE_LOCALTIME_R
668 gmt = *gmtime_r(&now, &gmt);
672 #ifdef HAVE_LOCALTIME_R
673 tm_now = localtime_r(&now, &dummy);
675 tm_now = localtime (&now);
677 days = tm_now->tm_yday - gmt.tm_yday;
678 hrs = ((days < -1 ? 24 : 1 < days ? -24 : days * 24) + tm_now->tm_hour - gmt.tm_hour);
679 mins = hrs * 60 + tm_now->tm_min - gmt.tm_min;
680 strftime (tempbuf, BUFFER_SIZE-6, "%d/%b/%Y:%H:%M:%S ", tm_now);
681 sprintf (tempbuf + strlen(tempbuf), "%+03d%02d", mins / 60, abs(mins) % 60);
684 outc += strlen(tempbuf);
685 if (outc < BUFFER_SIZE-1)
687 strcpy(outbuf + oldoutc, tempbuf);
691 outbuf[oldoutc] = '\0';
695 sprintf(outbuf, "IJB(%ld) Error: log_error(): Bad format string:\n"
697 "Exiting.", this_thread, fmt);
698 /* FIXME RACE HAZARD: should start critical section error_log_use here */
703 fputs(outbuf_save, logfp);
704 /* FIXME RACE HAZARD: should end critical section error_log_use here */
705 fatal_error(outbuf_save);
713 /* done with var. args */
716 if (outc >= BUFFER_SIZE-2)
718 /* insufficient room for newline and trailing null. */
720 static const char warning[] = "... [too long, truncated]\n";
722 if (outc < BUFFER_SIZE)
724 /* Need to add terminating null in this case. */
728 /* Truncate output */
729 outbuf[BUFFER_SIZE - sizeof(warning)] = '\0';
732 strcat(outbuf, warning);
736 /* Add terminating newline and null */
737 outbuf[outc++] = '\n';
741 /* FIXME RACE HAZARD: should start critical section error_log_use here */
743 /* deal with glibc stupidity - it won't let you initialize logfp */
749 fputs(outbuf_save, logfp);
751 if (loglevel == LOG_LEVEL_FATAL)
753 fatal_error(outbuf_save);
757 /* FIXME RACE HAZARD: should end critical section error_log_use here */
759 #if defined(_WIN32) && !defined(_WIN_CONSOLE)
760 /* Write to display */
761 LogPutString(outbuf_save);
762 #endif /* defined(_WIN32) && !defined(_WIN_CONSOLE) */
768 /*********************************************************************
770 * Function : w32_socket_strerr
772 * Description : Translate the return value from WSAGetLastError()
776 * 1 : errcode = The return value from WSAGetLastError().
777 * 2 : tmp_buf = A temporary buffer that might be used to
780 * Returns : String representing the error code. This may be
781 * a global string constant or a string stored in
784 *********************************************************************/
785 static char *w32_socket_strerr(int errcode, char *tmp_buf)
787 #define TEXT_FOR_ERROR(code,text) \
788 if (errcode == code) \
790 return #code " - " text; \
793 TEXT_FOR_ERROR(WSAEACCES, "Permission denied")
794 TEXT_FOR_ERROR(WSAEADDRINUSE, "Address already in use.")
795 TEXT_FOR_ERROR(WSAEADDRNOTAVAIL, "Cannot assign requested address.");
796 TEXT_FOR_ERROR(WSAEAFNOSUPPORT, "Address family not supported by protocol family.");
797 TEXT_FOR_ERROR(WSAEALREADY, "Operation already in progress.");
798 TEXT_FOR_ERROR(WSAECONNABORTED, "Software caused connection abort.");
799 TEXT_FOR_ERROR(WSAECONNREFUSED, "Connection refused.");
800 TEXT_FOR_ERROR(WSAECONNRESET, "Connection reset by peer.");
801 TEXT_FOR_ERROR(WSAEDESTADDRREQ, "Destination address required.");
802 TEXT_FOR_ERROR(WSAEFAULT, "Bad address.");
803 TEXT_FOR_ERROR(WSAEHOSTDOWN, "Host is down.");
804 TEXT_FOR_ERROR(WSAEHOSTUNREACH, "No route to host.");
805 TEXT_FOR_ERROR(WSAEINPROGRESS, "Operation now in progress.");
806 TEXT_FOR_ERROR(WSAEINTR, "Interrupted function call.");
807 TEXT_FOR_ERROR(WSAEINVAL, "Invalid argument.");
808 TEXT_FOR_ERROR(WSAEISCONN, "Socket is already connected.");
809 TEXT_FOR_ERROR(WSAEMFILE, "Too many open sockets.");
810 TEXT_FOR_ERROR(WSAEMSGSIZE, "Message too long.");
811 TEXT_FOR_ERROR(WSAENETDOWN, "Network is down.");
812 TEXT_FOR_ERROR(WSAENETRESET, "Network dropped connection on reset.");
813 TEXT_FOR_ERROR(WSAENETUNREACH, "Network is unreachable.");
814 TEXT_FOR_ERROR(WSAENOBUFS, "No buffer space available.");
815 TEXT_FOR_ERROR(WSAENOPROTOOPT, "Bad protocol option.");
816 TEXT_FOR_ERROR(WSAENOTCONN, "Socket is not connected.");
817 TEXT_FOR_ERROR(WSAENOTSOCK, "Socket operation on non-socket.");
818 TEXT_FOR_ERROR(WSAEOPNOTSUPP, "Operation not supported.");
819 TEXT_FOR_ERROR(WSAEPFNOSUPPORT, "Protocol family not supported.");
820 TEXT_FOR_ERROR(WSAEPROCLIM, "Too many processes.");
821 TEXT_FOR_ERROR(WSAEPROTONOSUPPORT, "Protocol not supported.");
822 TEXT_FOR_ERROR(WSAEPROTOTYPE, "Protocol wrong type for socket.");
823 TEXT_FOR_ERROR(WSAESHUTDOWN, "Cannot send after socket shutdown.");
824 TEXT_FOR_ERROR(WSAESOCKTNOSUPPORT, "Socket type not supported.");
825 TEXT_FOR_ERROR(WSAETIMEDOUT, "Connection timed out.");
826 TEXT_FOR_ERROR(WSAEWOULDBLOCK, "Resource temporarily unavailable.");
827 TEXT_FOR_ERROR(WSAHOST_NOT_FOUND, "Host not found.");
828 TEXT_FOR_ERROR(WSANOTINITIALISED, "Successful WSAStartup not yet performed.");
829 TEXT_FOR_ERROR(WSANO_DATA, "Valid name, no data record of requested type.");
830 TEXT_FOR_ERROR(WSANO_RECOVERY, "This is a non-recoverable error.");
831 TEXT_FOR_ERROR(WSASYSNOTREADY, "Network subsystem is unavailable.");
832 TEXT_FOR_ERROR(WSATRY_AGAIN, "Non-authoritative host not found.");
833 TEXT_FOR_ERROR(WSAVERNOTSUPPORTED, "WINSOCK.DLL version out of range.");
834 TEXT_FOR_ERROR(WSAEDISCON, "Graceful shutdown in progress.");
836 * The following error codes are documented in the Microsoft WinSock
837 * reference guide, but don't actually exist.
839 * TEXT_FOR_ERROR(WSA_INVALID_HANDLE, "Specified event object handle is invalid.");
840 * TEXT_FOR_ERROR(WSA_INVALID_PARAMETER, "One or more parameters are invalid.");
841 * TEXT_FOR_ERROR(WSAINVALIDPROCTABLE, "Invalid procedure table from service provider.");
842 * TEXT_FOR_ERROR(WSAINVALIDPROVIDER, "Invalid service provider version number.");
843 * TEXT_FOR_ERROR(WSA_IO_PENDING, "Overlapped operations will complete later.");
844 * TEXT_FOR_ERROR(WSA_IO_INCOMPLETE, "Overlapped I/O event object not in signaled state.");
845 * TEXT_FOR_ERROR(WSA_NOT_ENOUGH_MEMORY, "Insufficient memory available.");
846 * TEXT_FOR_ERROR(WSAPROVIDERFAILEDINIT, "Unable to initialize a service provider.");
847 * TEXT_FOR_ERROR(WSASYSCALLFAILURE, "System call failure.");
848 * TEXT_FOR_ERROR(WSA_OPERATION_ABORTED, "Overlapped operation aborted.");
851 sprintf(tmp_buf, "(error number %d)", errcode);
854 #endif /* def _WIN32 */