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158 lines
2.9 KiB
C
158 lines
2.9 KiB
C
/**
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* @file logger.c
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*
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* @brief Logger object, allows fine-controlled logging
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*
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*/
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/*
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include "logger.h"
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#include "types.h"
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#include "allocator.h"
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#include <syslog.h>
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#include <stdarg.h>
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/**
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* @brief The logger object
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*/
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typedef struct private_logger_s private_logger_t;
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struct private_logger_s {
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/**
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* Public data
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*/
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logger_t public;
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/**
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* fd to log, NULL for syslog
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*/
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FILE *target;
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/**
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* detail-level of logger
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*/
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logger_level_t level;
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/**
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* name of logger
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*/
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char *name;
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};
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/**
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* implements logger_t-function log
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*
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*/
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static status_t logg(private_logger_t *this, logger_level_t loglevel, char *format, ...)
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{
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if ((this->level & loglevel) == loglevel)
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{
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va_list args;
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va_start(args, format);
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if (this->target)
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{
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fprintf(this->target, format, args);
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fprintf(this->target, "\n");
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}
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else
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{
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syslog(LOG_INFO, format, args);
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}
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va_end(args);
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}
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return SUCCESS;
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}
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/**
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* implements logger_t-function enable_level
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*
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*/
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static status_t enable_level(private_logger_t *this, logger_level_t log_level)
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{
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this->level |= log_level;
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return SUCCESS;
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}
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/**
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* implements logger_t-function disable_level
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*
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*/
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static status_t disable_level(private_logger_t *this, logger_level_t log_level)
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{
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this->level &= (~log_level);
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return SUCCESS;
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}
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/**
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* implements logger_t-function destroy
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*
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*/
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static status_t destroy(private_logger_t *this)
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{
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if (this->target)
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{
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fclose(this->target);
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}
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allocator_free(this);
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return SUCCESS;
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}
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/*
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* Described in Header
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*
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*/
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logger_t *logger_create(char *logger_name, char *file, logger_level_t log_level)
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{
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private_logger_t *this = allocator_alloc_thing(private_logger_t);
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if (this == NULL)
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{
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return NULL;
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}
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this->public.log = (status_t(*)(logger_t*,logger_level_t,char*,...))logg;
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this->public.enable_level = (status_t(*)(logger_t*,logger_level_t))enable_level;
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this->public.disable_level = (status_t(*)(logger_t*,logger_level_t))disable_level;
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this->public.destroy = (status_t(*)(logger_t*))destroy;
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this->level = log_level;
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this->name = logger_name;
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/* use system logger ? */
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if (file)
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{
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this->target = fopen(file, "a");
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if (this->target == NULL)
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{
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allocator_free(this);
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return NULL;
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}
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}
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else
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{
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this->target = NULL;
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openlog("charon", 0, LOG_DAEMON);
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}
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return (logger_t*)this;
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}
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