/****************************************************************************** * * Nagios check_real plugin * * License: GPL * Copyright (c) 1999-2006 nagios-plugins team * * Last Modified: $Date: 2006/10/19 23:53:28 $ * * Description: * * This file contains the check_real plugin * * This plugin tests the REAL service on the specified host. * * * License Information: * * 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_real.c,v 1.27 2006/10/19 23:53:28 opensides Exp $ * ******************************************************************************/ const char *progname = "check_real"; const char *revision = "$Revision: 1.27 $"; const char *copyright = "2000-2006"; const char *email = "nagiosplug-devel@lists.sourceforge.net"; #include "common.h" #include "netutils.h" #include "utils.h" enum { PORT = 554 }; #define EXPECT "RTSP/1." #define URL "" int process_arguments (int, char **); int validate_arguments (void); void print_help (void); void print_usage (void); int server_port = PORT; char *server_address; char *host_name; char *server_url = NULL; char *server_expect; int warning_time = 0; int check_warning_time = FALSE; int critical_time = 0; int check_critical_time = FALSE; int verbose = FALSE; int main (int argc, char **argv) { int sd; int result = STATE_UNKNOWN; char buffer[MAX_INPUT_BUFFER]; char *status_line = NULL; 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); /* try to connect to the host at the given port number */ if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK) die (STATE_CRITICAL, _("Unable to connect to %s on port %d\n"), server_address, server_port); /* Part I - Server Check */ /* send the OPTIONS request */ sprintf (buffer, "OPTIONS rtsp://%s:%d RTSP/1.0\r\n", host_name, server_port); result = send (sd, buffer, strlen (buffer), 0); /* send the header sync */ sprintf (buffer, "CSeq: 1\r\n"); result = send (sd, buffer, strlen (buffer), 0); /* send a newline so the server knows we're done with the request */ sprintf (buffer, "\r\n"); result = send (sd, buffer, strlen (buffer), 0); /* watch for the REAL connection string */ result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0); /* return a CRITICAL status if we couldn't read any data */ if (result == -1) die (STATE_CRITICAL, _("No data received from %s\n"), host_name); /* make sure we find the response we are looking for */ if (!strstr (buffer, server_expect)) { if (server_port == PORT) printf ("%s\n", _("Invalid REAL response received from host")); else printf (_("Invalid REAL response received from host on port %d\n"), server_port); } else { /* else we got the REAL string, so check the return code */ time (&end_time); result = STATE_OK; status_line = (char *) strtok (buffer, "\n"); if (strstr (status_line, "200")) result = STATE_OK; /* client errors result in a warning state */ else if (strstr (status_line, "400")) result = STATE_WARNING; else if (strstr (status_line, "401")) result = STATE_WARNING; else if (strstr (status_line, "402")) result = STATE_WARNING; else if (strstr (status_line, "403")) result = STATE_WARNING; else if (strstr (status_line, "404")) result = STATE_WARNING; /* server errors result in a critical state */ else if (strstr (status_line, "500")) result = STATE_CRITICAL; else if (strstr (status_line, "501")) result = STATE_CRITICAL; else if (strstr (status_line, "502")) result = STATE_CRITICAL; else if (strstr (status_line, "503")) result = STATE_CRITICAL; else result = STATE_UNKNOWN; } /* Part II - Check stream exists and is ok */ if ((result == STATE_OK )&& (server_url != NULL) ) { /* Part I - Server Check */ /* send the OPTIONS request */ sprintf (buffer, "DESCRIBE rtsp://%s:%d%s RTSP/1.0\n", host_name, server_port, server_url); result = send (sd, buffer, strlen (buffer), 0); /* send the header sync */ sprintf (buffer, "CSeq: 2\n"); result = send (sd, buffer, strlen (buffer), 0); /* send a newline so the server knows we're done with the request */ sprintf (buffer, "\n"); result = send (sd, buffer, strlen (buffer), 0); /* watch for the REAL connection string */ result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0); /* return a CRITICAL status if we couldn't read any data */ if (result == -1) { printf (_("No data received from host\n")); result = STATE_CRITICAL; } else { /* make sure we find the response we are looking for */ if (!strstr (buffer, server_expect)) { if (server_port == PORT) printf ("%s\n", _("Invalid REAL response received from host")); else printf (_("Invalid REAL response received from host on port %d\n"), server_port); } else { /* else we got the REAL string, so check the return code */ time (&end_time); result = STATE_OK; status_line = (char *) strtok (buffer, "\n"); if (strstr (status_line, "200")) result = STATE_OK; /* client errors result in a warning state */ else if (strstr (status_line, "400")) result = STATE_WARNING; else if (strstr (status_line, "401")) result = STATE_WARNING; else if (strstr (status_line, "402")) result = STATE_WARNING; else if (strstr (status_line, "403")) result = STATE_WARNING; else if (strstr (status_line, "404")) result = STATE_WARNING; /* server errors result in a critical state */ else if (strstr (status_line, "500")) result = STATE_CRITICAL; else if (strstr (status_line, "501")) result = STATE_CRITICAL; else if (strstr (status_line, "502")) result = STATE_CRITICAL; else if (strstr (status_line, "503")) result = STATE_CRITICAL; else result = STATE_UNKNOWN; } } } /* Return results */ 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; /* Put some HTML in here to create a dynamic link */ printf (_("REAL %s - %d second response time\n"), state_text (result), (int) (end_time - start_time)); } else printf ("%s\n", status_line); /* close the connection */ close (sd); /* 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'}, {"IPaddress", required_argument, 0, 'I'}, {"expect", required_argument, 0, 'e'}, {"url", required_argument, 0, 'u'}, {"port", required_argument, 0, 'p'}, {"critical", required_argument, 0, 'c'}, {"warning", required_argument, 0, 'w'}, {"timeout", required_argument, 0, 't'}, {"verbose", no_argument, 0, 'v'}, {"version", no_argument, 0, 'V'}, {"help", no_argument, 0, 'h'}, {0, 0, 0, 0} }; if (argc < 2) return ERROR; 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, "+hVI:H:e:u:p:w:c:t:", longopts, &option); if (c == -1 || c == EOF) break; switch (c) { case 'I': /* hostname */ case 'H': /* hostname */ if (server_address) break; else if (is_host (optarg)) server_address = optarg; else usage2 (_("Invalid hostname/address"), optarg); break; case 'e': /* string to expect in response header */ server_expect = optarg; break; case 'u': /* server URL */ server_url = optarg; break; case 'p': /* port */ if (is_intpos (optarg)) { server_port = atoi (optarg); } else { usage4 (_("Port must be a positive integer")); } break; case 'w': /* warning time threshold */ if (is_intnonneg (optarg)) { warning_time = atoi (optarg); check_warning_time = TRUE; } else { usage4 (_("Warning time must be a positive integer")); } break; case 'c': /* critical time threshold */ if (is_intnonneg (optarg)) { critical_time = atoi (optarg); check_critical_time = TRUE; } else { usage4 (_("Critical time must be a positive integer")); } break; case 'v': /* verbose */ verbose = TRUE; break; case 't': /* timeout */ if (is_intnonneg (optarg)) { socket_timeout = atoi (optarg); } else { usage4 (_("Timeout interval must be a positive integer")); } break; case 'V': /* version */ print_revision (progname, revision); exit (STATE_OK); case 'h': /* help */ print_help (); exit (STATE_OK); case '?': /* usage */ usage2 (_("Unknown argument"), optarg); } } c = optind; if (server_address==NULL && argc>c) { if (is_host (argv[c])) { server_address = argv[c++]; } else { usage2 (_("Invalid hostname/address"), argv[c]); } } if (server_address==NULL) usage4 (_("You must provide a server to check")); if (host_name==NULL) host_name = strdup (server_address); if (server_expect == NULL) server_expect = strdup(EXPECT); return validate_arguments (); } int validate_arguments (void) { return OK; } void print_help (void) { char *myport; asprintf (&myport, "%d", PORT); print_revision (progname, revision); printf ("Copyright (c) 1999 Pedro Leite \n"); printf (COPYRIGHT, copyright, email); printf ("%s\n", _("This plugin tests the REAL service on the specified host.")); printf ("\n\n"); print_usage (); printf (_(UT_HELP_VRSN)); printf (_(UT_HOST_PORT), 'p', myport); printf (" %s\n", "-u, --url=STRING"); printf (" %s\n", _("Connect to this url")); printf (" %s\n", "-e, --expect=STRING"); printf (_("String to expect in first line of server response (default: %s)\n"), EXPECT); printf (_(UT_WARN_CRIT)); printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT); printf (_(UT_VERBOSE)); printf ("%s\n", _("This plugin will attempt to open an RTSP connection with the host.")); printf ("%s\n", _("Successul connects return STATE_OK, refusals and timeouts return")); printf ("%s\n", _("STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful connects,")); printf ("%s\n", _("but incorrect reponse messages from the host result in STATE_WARNING return")); printf ("%s\n", _("values.")); printf (_(UT_SUPPORT)); } void print_usage (void) { printf (_("Usage:")); printf ("%s -H host [-e expect] [-p port] [-w warn] [-c crit] [-t timeout] [-v]\n", progname); }