/***************************************************************************
 *   Copyright (C) 2006 by couriousous, blino, trem                        *
 *   couriousous@mandriva.org                                              *
 *   oblin@mandriva.com                                                    *
 *   trem@mandriva.org                                                     *
 *                                                                         *
 *   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.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#include <stdio.h>
#include "prcsys.h"
#include "prcsys_log.h"
#include <sys/time.h>
#include <unistd.h>
#include <fcntl.h>

static FILE * logf = NULL;
static struct timeval starttime;

void openlog(char * file) {
	int fd = 0;
	int flag;
	gettimeofday(&starttime,NULL);
	if(logf) 
		closelog();
	if(file == NULL) 
		file = "/var/log/prcsys.log";

	logf= fopen(file,"w");
	if(logf == NULL) {
		if(!test_mode)
			printf("Cannot open log file %s ! \n",file);
		return;
	}

	/* set the close-on-exec flag */
	fd = fileno(logf);
	if(fd < 0) 
		return;

	flag = fcntl(fd, F_GETFD);
	
	if(flag < 0) 
		return;
	
	fcntl(fd,F_SETFD,flag | FD_CLOEXEC);
}
void closelog(void) {
	struct timeval stoptime;
	gettimeofday(&stoptime,NULL);
	if(logf) {
		fprintf(logf,"Total time: %d seconds\n",(int) (stoptime.tv_sec - starttime.tv_sec));
		fclose(logf);
	}
	logf = NULL;
}

void printandlog(char * format, ...) {
	va_list list;
	if(logf) {
		va_start(list,format);
		vfprintf(logf,format,list);
		va_end(list);
		fflush(logf);
	}
	va_start(list,format);
	vprintf(format,list);
	va_end(list);
}

void dbg(char * format, ...) {
	va_list list;
	if(logf && debug) {
		if(debug == 2) {
			va_start(list,format);
			vprintf(format,list);
			va_end(list);
		}
		va_start(list,format);
		vfprintf(logf,format,list);
		va_end(list);
		fflush(logf);
	}
}

void writetolog(char * buffer,size_t s) {
	if(logf) {
		fwrite(buffer,1,s,logf);
		fflush(logf);
	}
}