thermferm/logger.c

/*****************************************************************************
 * Copyright (C) 2014
 *   
 * Michiel Broek <mbroek at mbse dot eu>
 *
 * This file is part of the mbsePi-apps
 *
 * This 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.
 *
 * mbsePi-apps 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 EC-65K; see the file COPYING.  If not, write to the Free
 * Software Foundation, 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
 *****************************************************************************/

#include "thermferm.h"


void logger(char *filename, char *progname, char *data)
{
    struct timeval	now;
    struct tm		ptm;
    char		*outstr = NULL, *name = NULL;
    FILE		*logfile;

    name = xstrcpy((char *)"/var/local/log/");
    name = xstrcat(name, progname);
    name = xstrcat(name, (char *)"/");
    name = xstrcat(name, filename);

    gettimeofday(&now, NULL);
    localtime_r(&now.tv_sec, &ptm);

    if ((logfile = fopen(name, "a+"))) {
	outstr = calloc(10240, sizeof(char));
	snprintf(outstr, 10239, "%04d-%02d-%02d %02d:%02d,%s\n", ptm.tm_year + 1900, ptm.tm_mon + 1, ptm.tm_mday, ptm.tm_hour, ptm.tm_min, data);
	fprintf(logfile, outstr);
	fclose(logfile);
	free(outstr);
	outstr = NULL;
    } else {
	    syslog(LOG_NOTICE, "logger: cannot open %s for writing", name);
    }

    free(name);
    name = NULL;
}