fnc_log.c

linuxUNIX下跑的一套服务端程序

 /* * 
 *  $Id$
 *  
 *  This file is part of Fenice
 *
 *  Fenice -- Open Media Server
 *
 *  Copyright (C) 2004 by
 *  	
 *	- Giampaolo Mancini	<[e-mail]>
 *	- Francesco Varano	<[e-mail]>
 *	- Marco Penno		<[e-mail]>
 *	- Federico Ridolfo	<[e-mail]>
 *	- Eugenio Menegatti 	<[e-mail]>
 *	- Stefano Cau
 *	- Giuliano Emma
 *	- Stefano Oldrini
 * 
 *  Fenice 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.
 *
 *  Fenice 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 Fenice; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *  
 * */


#include <stdio.h>
#include <time.h>
#include <string.h>
#include <syslog.h>
#include <config.h>

#include <fenice/fnc_log.h>
#include <fenice/debug.h>

#define LOG_FORMAT "%d/%b/%Y:%H:%M:%S %z"
#define ERR_FORMAT "%a %b %d %H:%M:%S %Y"
#define MAX_LEN_DATE 30 

//static char* fnc_name;
static FILE *fd;

void (*fnc_log)(int level, const char *fmt, ...);
#if HAVE_SYSLOG_H
	static void fnc_syslog(int level, const char *fmt, ...);
#endif
	static void fnc_errlog(int level, const char *fmt, ...);

/*Set fnc_log as fprintf on file or syslog or stderr*/
void fnc_log_init(char* name, int out){/*if out == FNC_LOG_OUT => stderr*/
//	fnc_name = name;
	fnc_log=fnc_errlog;

	if(out){
		if((fd=fopen(name,"a+"))==NULL){
#if HAVE_SYSLOG_H
			openlog("fenice ", LOG_PID /*| LOG_PERROR*/ , LOG_DAEMON);
			fnc_log=fnc_syslog;
#else
			fd=stderr;
#endif
		}
	}
	else
		fd=stderr;
	
}

/*Prints on standard error or file*/
static void fnc_errlog(int level, const char *fmt, ...){
	va_list args;
	time_t now;
	char date[MAX_LEN_DATE];
	int no_print=0;
	const struct tm *tm;

	time(&now);
	tm=localtime(&now);
	
	switch (level) {
		case FNC_LOG_FATAL:
			strftime(date, MAX_LEN_DATE, ERR_FORMAT ,tm);
			fprintf(fd, "[%s] [fatal error] ",date);
			break;
		case FNC_LOG_ERR:
			strftime(date, MAX_LEN_DATE, ERR_FORMAT ,tm);
			fprintf(fd, "[%s] [error] ",date);
			break;
		case FNC_LOG_WARN:
			strftime(date, MAX_LEN_DATE, ERR_FORMAT ,tm);
			fprintf(fd, "[%s] [warning] ",date);
			break;
		case FNC_LOG_DEBUG:
#if DEBUG
			fprintf(fd, "[debug] ");
#else
			no_print=1;	 
#endif
			break;
		case FNC_LOG_VERBOSE:
#ifdef VERBOSE
			fprintf(fd, "[verbose debug] ");
#else
			no_print=1;	 
#endif
			break;
		case FNC_LOG_CLIENT:
			break;
		default:
			/*FNC_LOG_INFO*/
			strftime(date, MAX_LEN_DATE, LOG_FORMAT ,tm);
			fprintf(fd, "[%s] ",date);
			break;
	}

	if(!no_print){
		va_start(args, fmt);
		vfprintf(fd, fmt, args);
		va_end(args);
		fflush(fd);
	}
}


#if HAVE_SYSLOG_H
static void fnc_syslog(int level, const char *fmt, ...){
	va_list args;
	int l=LOG_ERR;
	int no_print=0;

	switch (level) {
		case FNC_LOG_FATAL:
			l=LOG_CRIT;
			break;
		case FNC_LOG_ERR:
			l=LOG_ERR;
			break;
		case FNC_LOG_WARN:
			l=LOG_WARNING;
			break;
		case FNC_LOG_DEBUG:
#if DEBUG
			l=LOG_DEBUG;
#else
			no_print=1;	 
#endif
			break;
		case FNC_LOG_VERBOSE:
#ifdef VERBOSE
			l=LOG_DEBUG;
#else
			no_print=1;	 
#endif
			break;
		case FNC_LOG_CLIENT:
			l=LOG_INFO;
			no_print=1;
			break;
		default:
			l=LOG_INFO;
			break;
	}
	
	if(!no_print){
		va_start(args, fmt);
		vsyslog(l, fmt, args);
		va_end(args);
	}
}
#endif