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/*
** ZABBIX
** Copyright (C) 2000-2005 SIA Zabbix
**
** 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., 675 Mass Ave, Cambridge, MA 02139, USA.
**/
#include "common.h"
#include "zabbix_agent.h"
#include "comms.h"
#include "cfg.h"
#include "log.h"
#include "sysinfo.h"
#include "zbxconf.h"
#include "zbxgetopt.h"
#include "alias.h"
char *progname = NULL;
char title_message[] = "ZABBIX Agent";
char usage_message[] = "[-Vhp] [-c <file>] [-t <metric>]";
#ifndef HAVE_GETOPT_LONG
char *help_message[] = {
"Options:",
" -c <file> Specify configuration file",
" -h give this help",
" -V display version number",
" -p print supported metrics and exit",
" -t <metric> test specified metric and exit",
0 /* end of text */
};
#else
char *help_message[] = {
"Options:",
" -c --config <file> Specify configuration file",
" -h --help give this help",
" -V --version display version number",
" -p --print print supported metrics and exit",
" -t --test <metric> test specified metric and exit",
0 /* end of text */
};
#endif
struct zbx_option longopts[] =
{
{"config", 1, 0, 'c'},
{"help", 0, 0, 'h'},
{"version", 0, 0, 'V'},
{"print", 0, 0, 'p'},
{"test", 1, 0, 't'},
{0,0,0,0}
};
void child_signal_handler( int sig )
{
if( SIGALRM == sig )
{
signal( SIGALRM, child_signal_handler );
}
if( SIGQUIT == sig || SIGINT == sig || SIGTERM == sig )
{
}
exit( FAIL );
}
#ifdef _WINDOWS
static char DEFAULT_CONFIG_FILE[] = "C:\\zabbix_agent.conf";
#else /* not _WINDOWS */
static char DEFAULT_CONFIG_FILE[] = "/etc/zabbix/zabbix_agent.conf";
#endif /* _WINDOWS */
void init_config(void)
{
struct cfg_line cfg[]=
{
/* PARAMETER ,VAR ,FUNC, TYPE(0i,1s),MANDATORY,MIN,MAX
*/
{"Server",&CONFIG_HOSTS_ALLOWED,0,TYPE_STRING,PARM_MAND,0,0},
{"Timeout",&CONFIG_TIMEOUT,0,TYPE_INT,PARM_OPT,1,30},
{0}
};
parse_cfg_file(CONFIG_FILE,cfg);
}
int main(int argc, char **argv)
{
char ch = '\0';
int task = ZBX_TASK_START;
char *TEST_METRIC = NULL;
zbx_sock_t s_in;
zbx_sock_t s_out;
int ret;
char **value,
*command;
AGENT_RESULT result;
memset(&result, 0, sizeof(AGENT_RESULT));
progname = argv[0];
/* Parse the command-line. */
while ((ch = (char)zbx_getopt_long(argc, argv, "c:hVpt:", longopts, NULL)) != (char)EOF)
switch (ch) {
case 'c':
CONFIG_FILE = strdup(zbx_optarg);
break;
case 'h':
help();
exit(-1);
break;
case 'V':
version();
exit(-1);
break;
case 'p':
if(task == ZBX_TASK_START)
task = ZBX_TASK_PRINT_SUPPORTED;
break;
case 't':
if(task == ZBX_TASK_START)
{
task = ZBX_TASK_TEST_METRIC;
TEST_METRIC = strdup(zbx_optarg);
}
break;
default:
task = ZBX_TASK_SHOW_USAGE;
break;
}
if(CONFIG_FILE == NULL)
{
CONFIG_FILE = DEFAULT_CONFIG_FILE;
}
init_metrics(); /* Must be before init_config() */
if( ZBX_TASK_START == task )
load_config();
load_user_parameters();
/* Do not create debug files */
zabbix_open_log(LOG_TYPE_SYSLOG,LOG_LEVEL_EMPTY,NULL);
switch(task)
{
case ZBX_TASK_PRINT_SUPPORTED:
test_parameters();
exit(-1);
break;
case ZBX_TASK_TEST_METRIC:
test_parameter(TEST_METRIC);
exit(-1);
break;
case ZBX_TASK_SHOW_USAGE:
usage();
exit(-1);
break;
}
#if !defined(_WINDOWS)
signal( SIGINT, child_signal_handler);
signal( SIGTERM, child_signal_handler );
signal( SIGQUIT, child_signal_handler );
signal( SIGALRM, child_signal_handler );
alarm(CONFIG_TIMEOUT);
#endif /* not WONDOWS */
zbx_tcp_init(&s_in, (ZBX_SOCKET)fileno(stdin));
zbx_tcp_init(&s_out, (ZBX_SOCKET)fileno(stdout));
if( SUCCEED == (ret = zbx_tcp_check_security(&s_in, CONFIG_HOSTS_ALLOWED, 0)) )
{
if( SUCCEED == (ret = zbx_tcp_recv(&s_in, &command)) )
{
zbx_rtrim(command, "\r\n\0");
zabbix_log(LOG_LEVEL_DEBUG, "Requested [%s]", command);
init_result(&result);
process(command, 0, &result);
if( NULL == (value = GET_TEXT_RESULT(&result)) )
value = GET_MSG_RESULT(&result);
if(value)
{
zabbix_log(LOG_LEVEL_DEBUG, "Sending back [%s]", *value);
ret = zbx_tcp_send(&s_out, *value);
}
free_result(&result);
}
if( FAIL == ret )
{
zabbix_log(LOG_LEVEL_DEBUG, "Processing error: %s", zbx_tcp_strerror());
}
}
fflush(stdout);
free_metrics();
alias_list_free();
#if !defined(_WINDOWS)
alarm(0);
#endif /* not WONDOWS */
zabbix_close_log();
return SUCCEED;
}
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