/* $Id: log.c,v 1.9 2001-08-26 21:10:04 rjkaes Exp $ * * Logs the various messages which tinyproxy produces to either a log file or * the syslog daemon. Not much to it... * * Copyright (C) 1998 Steven Young * Copyright (C) 1999 Robert James Kaes (rjkaes@flarenet.com) * * 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, 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. */ #include "tinyproxy.h" #include #include "log.h" static char *syslog_level[] = { NULL, NULL, "CRITICAL", "ERROR", "WARNING", "NOTICE", "INFO", "DEBUG", "CONNECT" }; #define TIME_LENGTH 16 #define STRING_LENGTH 800 /* * Store the log level setting. */ static short int log_level = LOG_ERR; /* * Set the log level for writing to the log file. */ void set_log_level(short int level) { #ifndef NDEBUG /* * If we're running with debugging enabled, then set the log level * to DEBUG regardless of what's in the configuration file. */ log_level = LOG_DEBUG; #else log_level = level; #endif } /* * This routine logs messages to either the log file or the syslog function. */ void log_message(short int level, char *fmt, ...) { va_list args; time_t nowtime; FILE *cf; char time_string[TIME_LENGTH]; #if defined(HAVE_SYSLOG_H) && !defined(HAVE_VSYSLOG_H) char str[STRING_LENGTH]; #endif /* * Figure out if we should write the message or not. */ if (log_level != LOG_CONN) { if (level > log_level && level != LOG_CONN) return; } else { if (level == LOG_INFO) return; } #ifdef HAVE_SYSLOG_H if (config.syslog && level == LOG_CONN) level = LOG_INFO; #endif va_start(args, fmt); #ifdef HAVE_SYSLOG_H if (config.syslog) { # ifdef HAVE_VSYSLOG_H vsyslog(level, fmt, args); # else vsnprintf(str, STRING_LENGTH, fmt, args); syslog(level, str); # endif } else { #endif nowtime = time(NULL); /* Format is month day hour:minute:second (24 time) */ strftime(time_string, TIME_LENGTH, "%b %d %H:%M:%S", localtime(&nowtime)); if (!(cf = config.logf)) cf = stderr; fprintf(cf, "%-9s %s [%ld]: ", syslog_level[level], time_string, (long int)getpid()); vfprintf(cf, fmt, args); fprintf(cf, "\n"); fflush(cf); #ifdef HAVE_SYSLOG_H } #endif va_end(args); }