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- /*
- * stunnel Universal SSL tunnel
- * Copyright (c) 1998-2003 Michal Trojnara <Michal.Trojnara@mirt.net>
- * All Rights Reserved
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * In addition, as a special exception, Michal Trojnara gives
- * permission to link the code of this program with the OpenSSL
- * library (or with modified versions of OpenSSL that use the same
- * license as OpenSSL), and distribute linked combinations including
- * the two. You must obey the GNU General Public License in all
- * respects for all of the code used other than OpenSSL. If you modify
- * this file, you may extend this exception to your version of the
- * file, but you are not obligated to do so. If you do not wish to
- * do so, delete this exception statement from your version.
- */
-
- #include "common.h"
- #include "prototypes.h"
-
- static FILE *outfile=NULL; /* Logging to file disabled by default */
-
- #if defined (USE_WIN32) || defined (__vms)
-
- /* HANDLE evt=NULL; */
-
- void log_open(void) { /* Win32 version */
- #if 0
- AllocConsole();
- /* reopen stdin handle as console window input */
- freopen("CONIN$", "rb", stdin);
- /* reopen stout handle as console window output */
- freopen("CONOUT$", "wb", stdout);
- /* reopen stderr handle as console window output */
- freopen("CONOUT$", "wb", stderr);
- printf("Close this window to exit stunnel\n\n");
- #endif
- if(options.output_file)
- outfile=fopen(options.output_file, "a");
- if(outfile)
- return; /* It was possible to open a log file */
- /* TODO: Register NT EventLog source here */
- /* evt=RegisterEventSource(NULL, "stunnel"); */
- if(options.output_file)
- log(LOG_ERR, "Unable to open output file: %s", options.output_file);
- }
-
- void log_close(void) {
- if(outfile)
- fclose(outfile);
- #if 0
- else
- FreeConsole();
- #endif
- }
-
- #else /* USE_WIN32, __vms */
-
- void log_open(void) { /* Unix version */
- int fd;
-
- if(options.output_file) { /* 'output' option specified */
- fd=open(options.output_file, O_CREAT|O_WRONLY|O_APPEND, 0640);
- if(fd>=0) { /* file opened or created */
- fcntl(fd, F_SETFD, FD_CLOEXEC);
- outfile=fdopen(fd, "a");
- if(outfile)
- return; /* no need to setup syslog */
- }
- }
- if(options.option.syslog) {
- #ifdef __ultrix__
- openlog("stunnel", LOG_PID);
- #else
- openlog("stunnel", LOG_CONS | LOG_NDELAY | LOG_PID, options.facility);
- #endif /* __ultrix__ */
- }
- if(options.output_file)
- log(LOG_ERR, "Unable to open output file: %s", options.output_file);
- }
-
- void log_close(void) {
- if(outfile) {
- fclose(outfile);
- return;
- }
- if(options.option.syslog)
- closelog();
- }
-
- #endif /* USE_WIN32, __vms */
-
- void log(int level, const char *format, ...) {
- va_list arglist;
- char text[STRLEN], timestamped[STRLEN];
- FILE *out;
- time_t gmt;
- struct tm *timeptr;
- #ifdef HAVE_LOCALTIME_R
- struct tm timestruct;
- #endif
-
- if(level>options.debug_level)
- return;
- va_start(arglist, format);
- #ifdef HAVE_VSNPRINTF
- vsnprintf(text, STRLEN, format, arglist);
- #else
- vsprintf(text, format, arglist);
- #endif
- va_end(arglist);
- #if !defined (USE_WIN32) && !defined (__vms)
- if(!outfile && options.option.syslog) {
- syslog(level, "%s", text);
- return;
- }
- #endif /* USE_WIN32, __vms */
- out=outfile?outfile:stderr;
- time(&gmt);
- #ifdef HAVE_LOCALTIME_R
- timeptr=localtime_r(&gmt, ×truct);
- #else
- timeptr=localtime(&gmt);
- #endif
- #ifdef HAVE_SNPRINTF
- snprintf(timestamped, STRLEN,
- #else
- sprintf(timestamped,
- #endif
- "%04d.%02d.%02d %02d:%02d:%02d LOG%d[%lu:%lu]: %s",
- timeptr->tm_year+1900, timeptr->tm_mon+1, timeptr->tm_mday,
- timeptr->tm_hour, timeptr->tm_min, timeptr->tm_sec,
- level, stunnel_process_id(), stunnel_thread_id(), text);
- #ifdef USE_WIN32
- win_log(timestamped); /* Always log to the GUI window */
- if(outfile) /* to the file - only if it exists */
- #endif
- {
- fprintf(out, "%s\n", timestamped);
- fflush(out);
- }
- }
-
- void log_raw(const char *format, ...) {
- va_list arglist;
- char text[STRLEN];
- FILE *out;
-
- va_start(arglist, format);
- #ifdef HAVE_VSNPRINTF
- vsnprintf(text, STRLEN, format, arglist);
- #else
- vsprintf(text, format, arglist);
- #endif
- va_end(arglist);
- out=outfile?outfile:stderr;
- #ifdef USE_WIN32
- win_log(text);
- #else
- fprintf(out, "%s\n", text);
- fflush(out);
- #endif
- }
-
- /* End of log.c */
-