265 lines
6.8 KiB
C
265 lines
6.8 KiB
C
/******************************************************************************
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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$Id: check_udp.c,v 1.25 2004/12/25 23:17:44 opensides Exp $
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*****************************************************************************/
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const char *progname = "check_udp";
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const char *revision = "$Revision: 1.25 $";
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const char *copyright = "1999-2004";
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const char *email = "nagiosplug-devel@lists.sourceforge.net";
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#include "common.h"
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#include "netutils.h"
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#include "utils.h"
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int process_arguments (int, char **);
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void print_help (void);
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void print_usage (void);
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int warning_time = 0;
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int check_warning_time = FALSE;
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int critical_time = 0;
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int check_critical_time = FALSE;
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int verbose = FALSE;
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int server_port = 0;
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char *server_address = NULL;
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char *server_expect = NULL;
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char *server_send;
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int
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main (int argc, char **argv)
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{
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int result = STATE_UNKNOWN;
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char recv_buffer[MAX_INPUT_BUFFER];
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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if (process_arguments (argc, argv) == ERROR)
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usage4 (_("Could not parse arguments"));
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/* initialize alarm signal handling */
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signal (SIGALRM, socket_timeout_alarm_handler);
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/* set socket timeout */
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alarm (socket_timeout);
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time (&start_time);
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result = process_udp_request (server_address, server_port, server_send,
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recv_buffer, MAX_INPUT_BUFFER - 1);
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time (&end_time);
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if (result != STATE_OK) {
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printf (_("No response from host on port %d\n"), server_port);
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result = STATE_CRITICAL;
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}
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else {
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/* check to see if we got the response we wanted */
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if (server_expect) {
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if (!strstr (recv_buffer, server_expect)) {
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printf (_("Invalid response received from host on port %d\n"),
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server_port);
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result = STATE_CRITICAL;
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}
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}
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}
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/* we connected, so close connection before exiting */
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if (result == STATE_OK) {
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if (check_critical_time == TRUE
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&& (end_time - start_time) > critical_time) result = STATE_CRITICAL;
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else if (check_warning_time == TRUE
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&& (end_time - start_time) > warning_time) result =
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STATE_WARNING;
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printf (_("Connection %s on port %d - %d second response time\n"),
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(result == STATE_OK) ? _("accepted") : _("problem"), server_port,
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(int) (end_time - start_time));
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}
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/* reset the alarm */
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alarm (0);
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return result;
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}
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/* process command-line arguments */
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int
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process_arguments (int argc, char **argv)
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{
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int c;
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int option = 0;
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static struct option longopts[] = {
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{"hostname", required_argument, 0, 'H'},
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{"critical", required_argument, 0, 'c'},
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{"warning", required_argument, 0, 'w'},
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{"timeout", required_argument, 0, 't'},
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{"port", required_argument, 0, 'p'},
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{"expect", required_argument, 0, 'e'},
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{"send", required_argument, 0, 's'},
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{"verbose", no_argument, 0, 'v'},
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{"version", no_argument, 0, 'V'},
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{"help", no_argument, 0, 'h'},
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{0, 0, 0, 0}
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};
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if (argc < 2)
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usage ("\n");
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for (c = 1; c < argc; c++) {
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if (strcmp ("-to", argv[c]) == 0)
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strcpy (argv[c], "-t");
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else if (strcmp ("-wt", argv[c]) == 0)
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strcpy (argv[c], "-w");
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else if (strcmp ("-ct", argv[c]) == 0)
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strcpy (argv[c], "-c");
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}
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while (1) {
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c = getopt_long (argc, argv, "+hVvH:e:s:c:w:t:p:", longopts, &option);
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if (c == -1 || c == EOF || c == 1)
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break;
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switch (c) {
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case '?': /* print short usage statement if args not parsable */
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usage2 (_("Unknown argument"), optarg);
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case 'h': /* help */
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print_help ();
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exit (STATE_OK);
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case 'V': /* version */
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print_revision (progname, revision);
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exit (STATE_OK);
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case 'v': /* verbose mode */
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verbose = TRUE;
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break;
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case 'H': /* hostname */
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if (is_host (optarg) == FALSE)
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usage2 (_("Invalid hostname/address"), optarg);
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server_address = optarg;
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break;
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case 'c': /* critical */
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if (!is_intnonneg (optarg))
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usage4 (_("Critical threshold must be a positive integer"));
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else
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critical_time = atoi (optarg);
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check_critical_time = TRUE;
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break;
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case 'w': /* warning */
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if (!is_intnonneg (optarg))
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usage4 (_("Warning threshold must be a positive integer"));
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else
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warning_time = atoi (optarg);
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check_warning_time = TRUE;
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break;
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case 't': /* timeout */
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if (!is_intnonneg (optarg))
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usage2 (_("Timeout interval must be a positive integer"), optarg);
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else
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socket_timeout = atoi (optarg);
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break;
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case 'p': /* port */
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if (!is_intnonneg (optarg))
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usage4 (_("Port must be a positive integer"));
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else
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server_port = atoi (optarg);
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break;
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case 'e': /* expect */
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server_expect = optarg;
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break;
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case 's': /* send */
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server_send = optarg;
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break;
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}
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}
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c = optind;
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if (server_address == NULL && c < argc && argv[c]) {
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if (is_host (argv[c]) == FALSE)
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usage2 (_("Invalid hostname/address"), optarg);
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server_address = argv[c++];
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}
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if (server_address == NULL)
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usage4 (_("Hostname was not supplied"));
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if (server_send == NULL)
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server_send = strdup("");
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return c;
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}
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void
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print_help (void)
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{
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print_revision (progname, revision);
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printf ("Copyright (c) 1999 Ethan Galstad\n");
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printf (COPYRIGHT, copyright, email);
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printf (_("\
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This plugin tests an UDP connection with the specified host.\n\n"));
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print_usage ();
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printf (_(UT_HELP_VRSN));
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printf (_(UT_HOST_PORT), 'p', "none");
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printf (_("\
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-e, --expect=STRING <optional>\n\
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String to expect in first line of server response\n\
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-s, --send=STRING <optional>\n\
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String to send to the server when initiating the connection\n"));
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printf (_(UT_WARN_CRIT));
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printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
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printf (_(UT_VERBOSE));
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printf (_("\
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This plugin will attempt to connect to the specified port on the host.\n\
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Successful connects return STATE_OK, refusals and timeouts return\n\
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STATE_CRITICAL, other errors return STATE_UNKNOWN.\n\n"));
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printf(_(UT_SUPPORT));
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}
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/* Original Command line:
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check_udp <host_address> [-p port] [-s send] [-e expect] \
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[-wt warn_time] [-ct crit_time] [-to to_sec] */
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void
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print_usage (void)
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{
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printf ("\
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Usage: %s -H <host_address> [-p port] [-w warn_time] [-c crit_time]\n\
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[-e expect] [-s send] [-t to_sec] [-v]\n", progname);
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}
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