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/*
* Copyright (C) 2016 Andrej N. Gritsenko <andrej@rep.kiev.ua>
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This file is a part of FoxEye project, module 'syslog'.
*/
#include "foxeye.h"
#include "modules.h"
#include "init.h"
#include <syslog.h>
static char syslog_facility[32] = "local0";
static char syslog_facility_old[32] = "";
static INTERFACE *_syslog = NULL;
#define SYSLOG_LEVELS \
(F_USERS | F_CMDS | F_CONN | F_SERV | F_ERROR | F_WARN | F_DEBUG | F_BOOT)
static int _syslog_request(INTERFACE *iface, REQUEST *req)
{
int prio;
static const int locals[] = { LOG_LOCAL0, LOG_LOCAL1, LOG_LOCAL2, LOG_LOCAL3,
LOG_LOCAL4, LOG_LOCAL5, LOG_LOCAL6, LOG_LOCAL7 };
if (req && (req->flag & SYSLOG_LEVELS) && syslog_facility[0])
{
/* check if need to set facility */
if (strcmp(syslog_facility, syslog_facility_old) != 0)
{
if (syslog_facility_old[0]) /* was opened before */
closelog();
strcpy(syslog_facility_old, syslog_facility);
if (strncasecmp(syslog_facility, "local", 5) == 0)
prio = locals[(atoi(&syslog_facility[5]) & 7)];
#ifdef LOG_DAEMON
else if (strcasecmp(syslog_facility, "daemon") == 0)
prio = LOG_DAEMON;
#endif
else
prio = LOG_USER;
openlog(NULL, LOG_PID, prio);
}
if (req->flag & F_ERROR)
prio = LOG_ERR;
else if (req->flag & F_WARN)
prio = LOG_WARNING;
else if (req->flag & F_BOOT)
prio = LOG_NOTICE;
else if (req->flag == F_DEBUG)
prio = LOG_DEBUG;
else
prio = LOG_INFO;
syslog(prio, "%s", req->string);
}
return REQ_OK;
}
static iftype_t _syslog_signal(INTERFACE *iface, ifsig_t sig)
{
switch (sig)
{
case S_TERMINATE:
if (syslog_facility_old[0])
closelog();
syslog_facility_old[0] = 0;
_syslog = NULL;
case S_SHUTDOWN:
return I_DIED;
default: ;
}
return 0;
}
static void _syslog_register(void)
{
/* register module itself */
Add_Request(I_INIT, "*", F_REPORT, "module syslog");
/* register all variables */
RegisterString("syslog-facility", syslog_facility, sizeof(syslog_facility), 0);
}
/*
* this function must receive signals:
* S_TERMINATE - unload module,
* S_REPORT - out state info to log,
* S_REG - report/register anything we should have in config file.
*/
static iftype_t module_signal(INTERFACE *iface, ifsig_t sig)
{
switch (sig)
{
case S_TERMINATE:
Delete_Help("syslog");
if (_syslog)
_syslog_signal(_syslog, sig);
UnregisterVariable("syslog-facility");
iface->ift |= I_DIED;
break;
case S_REG:
/* reregister all */
_syslog_register();
break;
case S_REPORT:
if (_syslog)
{
INTERFACE *tmp = Set_Iface(iface);
New_Request(tmp, F_REPORT, _("Module syslog: active."));
Unset_Iface();
}
break;
default: ;
}
return 0;
}
/*
* this function called when you load a module.
* Input: parameters string args.
* Returns: address of signals receiver function, NULL if not loaded.
*/
SigFunction ModuleInit (char *args)
{
CheckVersion;
Add_Help("syslog");
_syslog_register();
_syslog = Add_Iface(I_LOG, "*", &_syslog_signal, &_syslog_request, NULL);
return (&module_signal);
}
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