/****************************************************************************** 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: check_udp.c,v 1.25 2004/12/25 23:17:44 opensides Exp $ *****************************************************************************/ const char *progname = "check_udp"; const char *revision = "$Revision: 1.25 $"; const char *copyright = "1999-2004"; 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 = STATE_UNKNOWN; char recv_buffer[MAX_INPUT_BUFFER]; setlocale (LC_ALL, ""); bindtextdomain (PACKAGE, LOCALEDIR); textdomain (PACKAGE); if (process_arguments (argc, argv) == ERROR) 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 */ usage2 (_("Unknown argument"), optarg); 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)) usage4 (_("Critical threshold must be a positive integer")); else critical_time = atoi (optarg); check_critical_time = TRUE; break; case 'w': /* warning */ if (!is_intnonneg (optarg)) usage4 (_("Warning threshold must be a positive integer")); 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)) usage4 (_("Port must be a positive integer")); 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) usage4 (_("Hostname was not supplied")); 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 \n\ String to expect in first line of server response\n\ -s, --send=STRING \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 [-p port] [-s send] [-e expect] \ [-wt warn_time] [-ct crit_time] [-to to_sec] */ void print_usage (void) { printf ("\ Usage: %s -H [-p port] [-w warn_time] [-c crit_time]\n\ [-e expect] [-s send] [-t to_sec] [-v]\n", progname); }