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/*
* Copyright (C) 2012 Tobias Brunner
* Copyright (C) 2006 Martin Willi
* HSR 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 <stdio.h>
#include <string.h>
#include <syslog.h>
#include "sys_logger.h"
#include <threading/mutex.h>
#include <threading/rwlock.h>
typedef struct private_sys_logger_t private_sys_logger_t;
/**
* Private data of a sys_logger_t object
*/
struct private_sys_logger_t {
/**
* Public data.
*/
sys_logger_t public;
/**
* syslog facility to use
*/
int facility;
/**
* Maximum level to log, for each group
*/
level_t levels[DBG_MAX];
/**
* Print the name/# of the IKE_SA?
*/
bool ike_name;
/**
* Mutex to ensure multi-line log messages are not torn apart
*/
mutex_t *mutex;
/**
* Lock to read/write options (levels, ike_name)
*/
rwlock_t *lock;
};
METHOD(logger_t, log_, void,
private_sys_logger_t *this, debug_t group, level_t level, int thread,
ike_sa_t* ike_sa, const char *message)
{
char groupstr[4], namestr[128] = "";
const char *current = message, *next;
/* cache group name and optional name string */
snprintf(groupstr, sizeof(groupstr), "%N", debug_names, group);
this->lock->read_lock(this->lock);
if (this->ike_name && ike_sa)
{
if (ike_sa->get_peer_cfg(ike_sa))
{
snprintf(namestr, sizeof(namestr), " <%s|%d>",
ike_sa->get_name(ike_sa), ike_sa->get_unique_id(ike_sa));
}
else
{
snprintf(namestr, sizeof(namestr), " <%d>",
ike_sa->get_unique_id(ike_sa));
}
}
this->lock->unlock(this->lock);
/* do a syslog for every line */
this->mutex->lock(this->mutex);
while (TRUE)
{
next = strchr(current, '\n');
if (next == NULL)
{
syslog(this->facility | LOG_INFO, "%.2d[%s]%s %s\n",
thread, groupstr, namestr, current);
break;
}
syslog(this->facility | LOG_INFO, "%.2d[%s]%s %.*s\n",
thread, groupstr, namestr, (int)(next - current), current);
current = next + 1;
}
this->mutex->unlock(this->mutex);
}
METHOD(logger_t, get_level, level_t,
private_sys_logger_t *this, debug_t group)
{
level_t level;
this->lock->read_lock(this->lock);
level = this->levels[group];
this->lock->unlock(this->lock);
return level;
}
METHOD(sys_logger_t, set_level, void,
private_sys_logger_t *this, debug_t group, level_t level)
{
this->lock->write_lock(this->lock);
if (group < DBG_ANY)
{
this->levels[group] = level;
}
else
{
for (group = 0; group < DBG_MAX; group++)
{
this->levels[group] = level;
}
}
this->lock->unlock(this->lock);
}
METHOD(sys_logger_t, set_options, void,
private_sys_logger_t *this, bool ike_name)
{
this->lock->write_lock(this->lock);
this->ike_name = ike_name;
this->lock->unlock(this->lock);
}
METHOD(sys_logger_t, destroy, void,
private_sys_logger_t *this)
{
this->lock->destroy(this->lock);
this->mutex->destroy(this->mutex);
free(this);
}
/*
* Described in header.
*/
sys_logger_t *sys_logger_create(int facility)
{
private_sys_logger_t *this;
INIT(this,
.public = {
.logger = {
.log = _log_,
.get_level = _get_level,
},
.set_level = _set_level,
.set_options = _set_options,
.destroy = _destroy,
},
.facility = facility,
.mutex = mutex_create(MUTEX_TYPE_DEFAULT),
.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
);
set_level(this, DBG_ANY, LEVEL_SILENT);
setlogmask(LOG_UPTO(LOG_INFO));
return &this->public;
}
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