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/**
* @file logger.c
*
* @brief Logger object, allows fine-controlled logging
*
*/
/*
* Copyright (C) 2005 Jan Hutter, Martin Willi
* Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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 "logger.h"
#include "types.h"
#include "allocator.h"
#include <syslog.h>
#include <stdarg.h>
/**
* @brief The logger object
*/
typedef struct private_logger_s private_logger_t;
struct private_logger_s {
/**
* Public data
*/
logger_t public;
/**
* fd to log, NULL for syslog
*/
FILE *target;
/**
* detail-level of logger
*/
logger_level_t level;
/**
* name of logger
*/
char *name;
};
/**
* implements logger_t-function log
*
*/
static status_t logg(private_logger_t *this, logger_level_t loglevel, char *format, ...)
{
if ((this->level & loglevel) == loglevel)
{
va_list args;
va_start(args, format);
if (this->target)
{
fprintf(this->target, format, args);
fprintf(this->target, "\n");
}
else
{
syslog(LOG_INFO, format, args);
}
va_end(args);
}
return SUCCESS;
}
/**
* implements logger_t-function enable_level
*
*/
static status_t enable_level(private_logger_t *this, logger_level_t log_level)
{
this->level |= log_level;
return SUCCESS;
}
/**
* implements logger_t-function disable_level
*
*/
static status_t disable_level(private_logger_t *this, logger_level_t log_level)
{
this->level &= (~log_level);
return SUCCESS;
}
/**
* implements logger_t-function destroy
*
*/
static status_t destroy(private_logger_t *this)
{
if (this->target)
{
fclose(this->target);
}
allocator_free(this);
return SUCCESS;
}
/*
* Described in Header
*
*/
logger_t *logger_create(char *logger_name, char *file, logger_level_t log_level)
{
private_logger_t *this = allocator_alloc_thing(private_logger_t);
if (this == NULL)
{
return NULL;
}
this->public.log = (status_t(*)(logger_t*,logger_level_t,char*,...))logg;
this->public.enable_level = (status_t(*)(logger_t*,logger_level_t))enable_level;
this->public.disable_level = (status_t(*)(logger_t*,logger_level_t))disable_level;
this->public.destroy = (status_t(*)(logger_t*))destroy;
this->level = log_level;
this->name = logger_name;
/* use system logger ? */
if (file)
{
this->target = fopen(file, "a");
if (this->target == NULL)
{
allocator_free(this);
return NULL;
}
}
else
{
this->target = NULL;
openlog("charon", 0, LOG_DAEMON);
}
return (logger_t*)this;
}
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