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/******************************************************************************
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.
$Id$
*****************************************************************************/
const char *progname = "check_udp";
const char *revision = "$Revision$";
const char *copyright = "1999-2002";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "netutils.h"
#include "utils.h"
int process_arguments (int, char **);
void print_help (void);
void print_usage (void);
int warning_time = 0;
int check_warning_time = FALSE;
int critical_time = 0;
int check_critical_time = FALSE;
int verbose = FALSE;
int server_port = 0;
char *server_address = NULL;
char *server_expect = NULL;
char *server_send;
int
main (int argc, char **argv)
{
int result;
char recv_buffer[MAX_INPUT_BUFFER];
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (process_arguments (argc, argv) != TRUE)
usage4 (_("Could not parse arguments"));
/* initialize alarm signal handling */
signal (SIGALRM, socket_timeout_alarm_handler);
/* set socket timeout */
alarm (socket_timeout);
time (&start_time);
result = process_udp_request (server_address, server_port, server_send,
recv_buffer, MAX_INPUT_BUFFER - 1);
time (&end_time);
if (result != STATE_OK) {
printf ("No response from host on port %d\n", server_port);
result = STATE_CRITICAL;
}
else {
/* check to see if we got the response we wanted */
if (server_expect) {
if (!strstr (recv_buffer, server_expect)) {
printf ("Invalid response received from host on port %d\n",
server_port);
result = STATE_CRITICAL;
}
}
}
/* we connected, so close connection before exiting */
if (result == STATE_OK) {
if (check_critical_time == TRUE
&& (end_time - start_time) > critical_time) result = STATE_CRITICAL;
else if (check_warning_time == TRUE
&& (end_time - start_time) > warning_time) result =
STATE_WARNING;
printf (_("Connection %s on port %d - %d second response time\n"),
(result == STATE_OK) ? _("accepted") : _("problem"), server_port,
(int) (end_time - start_time));
}
/* reset the alarm */
alarm (0);
return result;
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
int option = 0;
static struct option longopts[] = {
{"hostname", required_argument, 0, 'H'},
{"critical", required_argument, 0, 'c'},
{"warning", required_argument, 0, 'w'},
{"timeout", required_argument, 0, 't'},
{"port", required_argument, 0, 'p'},
{"expect", required_argument, 0, 'e'},
{"send", required_argument, 0, 's'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
if (argc < 2)
usage ("\n");
for (c = 1; c < argc; c++) {
if (strcmp ("-to", argv[c]) == 0)
strcpy (argv[c], "-t");
else if (strcmp ("-wt", argv[c]) == 0)
strcpy (argv[c], "-w");
else if (strcmp ("-ct", argv[c]) == 0)
strcpy (argv[c], "-c");
}
while (1) {
c = getopt_long (argc, argv, "+hVvH:e:s:c:w:t:p:", longopts, &option);
if (c == -1 || c == EOF || c == 1)
break;
switch (c) {
case '?': /* print short usage statement if args not parsable */
printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
print_usage ();
exit (STATE_UNKNOWN);
case 'h': /* help */
print_help ();
exit (STATE_OK);
case 'V': /* version */
print_revision (progname, revision);
exit (STATE_OK);
case 'v': /* verbose mode */
verbose = TRUE;
break;
case 'H': /* hostname */
if (is_host (optarg) == FALSE)
usage2 (_("Invalid hostname/address"), optarg);
server_address = optarg;
break;
case 'c': /* critical */
if (!is_intnonneg (optarg))
usage (_("Critical threshold must be a positive integer\n"));
else
critical_time = atoi (optarg);
check_critical_time = TRUE;
break;
case 'w': /* warning */
if (!is_intnonneg (optarg))
usage (_("Warning threshold must be a positive integer\n"));
else
warning_time = atoi (optarg);
check_warning_time = TRUE;
break;
case 't': /* timeout */
if (!is_intnonneg (optarg))
usage2 (_("Timeout interval must be a positive integer"), optarg);
else
socket_timeout = atoi (optarg);
break;
case 'p': /* port */
if (!is_intnonneg (optarg))
usage (_("Port must be a positive integer\n"));
else
server_port = atoi (optarg);
break;
case 'e': /* expect */
server_expect = optarg;
break;
case 's': /* send */
server_send = optarg;
break;
}
}
c = optind;
if (server_address == NULL && c < argc && argv[c]) {
if (is_host (argv[c]) == FALSE)
usage2 (_("Invalid hostname/address"), optarg);
server_address = argv[c++];
}
if (server_address == NULL)
usage (_("Host name was not supplied\n"));
if (server_send == NULL)
server_send = strdup("");
return c;
}
void
print_help (void)
{
print_revision (progname, revision);
printf ("Copyright (c) 1999 Ethan Galstad\n");
printf (COPYRIGHT, copyright, email);
printf (_("\
This plugin tests an UDP connection with the specified host.\n\n"));
print_usage ();
printf (_(UT_HELP_VRSN));
printf (_(UT_HOST_PORT), 'p', "none");
printf (_("\
-e, --expect=STRING <optional>\n\
String to expect in first line of server response\n\
-s, --send=STRING <optional>\n\
String to send to the server when initiating the connection\n"));
printf (_(UT_WARN_CRIT));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
printf (_(UT_VERBOSE));
printf (_("\
This plugin will attempt to connect to the specified port on the host.\n\
Successful connects return STATE_OK, refusals and timeouts return\n\
STATE_CRITICAL, other errors return STATE_UNKNOWN.\n\n"));
printf(_(UT_SUPPORT));
}
/* Original Command line:
check_udp <host_address> [-p port] [-s send] [-e expect] \
[-wt warn_time] [-ct crit_time] [-to to_sec] */
void
print_usage (void)
{
printf (_("\
Usage: %s -H <host_address> [-p port] [-w warn_time] [-c crit_time]\n\
[-e expect] [-s send] [-t to_sec] [-v]\n"), progname);
printf (_(UT_HLP_VRS), progname, progname);
}
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