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/* ulogd_LOGEMU.c, Version $Revision$
*
* ulogd output target for syslog logging emulation
*
* This target produces a file which looks the same like the syslog-entries
* of the LOG target.
*
* (C) 2000-2001 by Harald Welte <laforge@gnumonks.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <ulogd/ulogd.h>
#include <ulogd/conffile.h>
#include "../util/printpkt.c"
#ifndef ULOGD_LOGEMU_DEFAULT
#define ULOGD_LOGEMU_DEFAULT "/var/log/ulogd.syslogemu"
#endif
#ifndef ULOGD_LOGEMU_SYNC_DEFAULT
#define ULOGD_LOGEMU_SYNC_DEFAULT 0
#endif
static struct config_keyset logemu_kset = {
.num_ces = 2,
.ces = {
{
.key = "file",
.type = CONFIG_TYPE_STRING,
.options = CONFIG_OPT_NONE,
.u = { .string = ULOGD_LOGEMU_DEFAULT },
},
{
.key = "sync",
.type = CONFIG_TYPE_INT,
.options = CONFIG_OPT_NONE,
.u = { .value = ULOGD_LOGEMU_SYNC_DEFAULT },
},
},
};
struct logemu_instance {
FILE *of;
};
static int _output_logemu(struct ulogd_pluginstance *upi)
{
struct logemu_instance *li = (struct logemu_instance *) &upi->private;
struct ulogd_key *res = upi->input;
static char buf[4096];
printpkt_print(res, buf, 1);
fprintf(li->of, "%s", buf);
if (upi->config_kset->ces[1].u.value)
fflush(li->of);
return 0;
}
static void signal_handler_logemu(struct ulogd_pluginstance *pi, int signal)
{
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
switch (signal) {
case SIGHUP:
ulogd_log(ULOGD_NOTICE, "syslogemu: reopening logfile\n");
fclose(li->of);
li->of = fopen(pi->config_kset->ces[0].u.string, "a");
if (!li->of) {
ulogd_log(ULOGD_ERROR, "can't reopen syslogemu: %s\n",
strerror(errno));
}
break;
default:
break;
}
}
static int start_logemu(struct ulogd_pluginstance *pi)
{
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
#ifdef DEBUG_LOGEMU
li->of = stdout;
#else
li->of = fopen(pi->config_kset->ces[0].u.string, "a");
if (!li->of) {
ulogd_log(ULOGD_FATAL, "can't open syslogemu: %s\n",
strerror(errno));
return errno;
}
#endif
if (printpkt_init()) {
ulogd_log(ULOGD_ERROR, "can't resolve all keyhash id's\n");
return -EINVAL;
}
return 0;
}
static int fini_logemu(struct ulogd_pluginstance *pi) {
struct logemu_instance *li = (struct logemu_instance *) &pi->private;
if (li->of != stdout)
fclose(li->of);
return 0;
}
static int configure_logemu(struct ulogd_pluginstance *pi,
struct ulogd_pluginstance_stack *stack)
{
/* FIXME: error handling */
config_parse_file(pi->id, &logemu_kset);
return 0;
}
static struct ulogd_plugin logemu_plugin = {
.name = "LOGEMU",
.input = {
.keys = printpkt_keys,
.num_keys = ARRAY_SIZE(printpkt_keys),
.type = ULOGD_DTYPE_PACKET,
},
.output = {
.type = ULOGD_DTYPE_SINK,
},
.config_kset = &logemu_kset,
.priv_size = sizeof(struct logemu_instance),
.configure = &configure_logemu,
.start = &start_logemu,
.stop = &fini_logemu,
.interp = &_output_logemu,
.signal = &signal_handler_logemu,
};
void __attribute__ ((constructor)) init(void);
void init(void)
{
ulogd_register_plugin(&logemu_plugin);
}
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