454 lines
11 KiB
C
454 lines
11 KiB
C
/*****************************************************************************
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*
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* Monitoring check_real plugin
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*
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* License: GPL
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* Copyright (c) 2000-2007 Monitoring Plugins Development Team
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*
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* Description:
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*
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* This file contains the check_real plugin
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*
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* This plugin tests the REAL service on the specified host.
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*
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*
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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 3 of the License, or
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* (at your option) any later version.
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*
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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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*
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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, see <http://www.gnu.org/licenses/>.
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*
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*
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*****************************************************************************/
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const char *progname = "check_real";
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const char *copyright = "2000-2007";
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const char *email = "devel@monitoring-plugins.org";
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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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enum {
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PORT = 554
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};
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#define EXPECT "RTSP/1."
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#define URL ""
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int process_arguments (int, char **);
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int validate_arguments (void);
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void print_help (void);
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void print_usage (void);
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int server_port = PORT;
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char *server_address;
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char *host_name;
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char *server_url = NULL;
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char *server_expect;
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int warning_time = 0;
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bool check_warning_time = false;
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int critical_time = 0;
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bool check_critical_time = false;
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bool verbose = false;
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int
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main (int argc, char **argv)
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{
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int sd;
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int result = STATE_UNKNOWN;
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char buffer[MAX_INPUT_BUFFER];
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char *status_line = NULL;
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setlocale (LC_ALL, "");
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bindtextdomain (PACKAGE, LOCALEDIR);
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textdomain (PACKAGE);
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/* Parse extra opts if any */
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argv=np_extra_opts (&argc, argv, progname);
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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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/* try to connect to the host at the given port number */
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if (my_tcp_connect (server_address, server_port, &sd) != STATE_OK)
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die (STATE_CRITICAL, _("Unable to connect to %s on port %d\n"),
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server_address, server_port);
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/* Part I - Server Check */
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/* send the OPTIONS request */
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sprintf (buffer, "OPTIONS rtsp://%s:%d RTSP/1.0\r\n", host_name, server_port);
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result = send (sd, buffer, strlen (buffer), 0);
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/* send the header sync */
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sprintf (buffer, "CSeq: 1\r\n");
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result = send (sd, buffer, strlen (buffer), 0);
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/* send a newline so the server knows we're done with the request */
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sprintf (buffer, "\r\n");
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result = send (sd, buffer, strlen (buffer), 0);
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/* watch for the REAL connection string */
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result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
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/* return a CRITICAL status if we couldn't read any data */
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if (result == -1)
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die (STATE_CRITICAL, _("No data received from %s\n"), host_name);
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/* make sure we find the response we are looking for */
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if (!strstr (buffer, server_expect)) {
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if (server_port == PORT)
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printf ("%s\n", _("Invalid REAL response received from host"));
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else
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printf (_("Invalid REAL response received from host on port %d\n"),
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server_port);
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}
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else {
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/* else we got the REAL string, so check the return code */
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time (&end_time);
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result = STATE_OK;
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status_line = (char *) strtok (buffer, "\n");
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if (strstr (status_line, "200"))
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result = STATE_OK;
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/* client errors result in a warning state */
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else if (strstr (status_line, "400"))
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result = STATE_WARNING;
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else if (strstr (status_line, "401"))
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result = STATE_WARNING;
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else if (strstr (status_line, "402"))
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result = STATE_WARNING;
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else if (strstr (status_line, "403"))
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result = STATE_WARNING;
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else if (strstr (status_line, "404"))
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result = STATE_WARNING;
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/* server errors result in a critical state */
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else if (strstr (status_line, "500"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "501"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "502"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "503"))
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result = STATE_CRITICAL;
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else
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result = STATE_UNKNOWN;
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}
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/* Part II - Check stream exists and is ok */
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if ((result == STATE_OK )&& (server_url != NULL) ) {
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/* Part I - Server Check */
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/* send the DESCRIBE request */
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sprintf (buffer, "DESCRIBE rtsp://%s:%d%s RTSP/1.0\r\n", host_name,
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server_port, server_url);
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result = send (sd, buffer, strlen (buffer), 0);
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/* send the header sync */
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sprintf (buffer, "CSeq: 2\r\n");
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result = send (sd, buffer, strlen (buffer), 0);
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/* send a newline so the server knows we're done with the request */
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sprintf (buffer, "\r\n");
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result = send (sd, buffer, strlen (buffer), 0);
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/* watch for the REAL connection string */
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result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
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buffer[result] = '\0'; /* null terminate received buffer */
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/* return a CRITICAL status if we couldn't read any data */
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if (result == -1) {
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printf (_("No data received from host\n"));
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result = STATE_CRITICAL;
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}
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else {
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/* make sure we find the response we are looking for */
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if (!strstr (buffer, server_expect)) {
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if (server_port == PORT)
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printf ("%s\n", _("Invalid REAL response received from host"));
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else
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printf (_("Invalid REAL response received from host on port %d\n"),
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server_port);
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}
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else {
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/* else we got the REAL string, so check the return code */
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time (&end_time);
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result = STATE_OK;
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status_line = (char *) strtok (buffer, "\n");
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if (strstr (status_line, "200"))
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result = STATE_OK;
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/* client errors result in a warning state */
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else if (strstr (status_line, "400"))
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result = STATE_WARNING;
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else if (strstr (status_line, "401"))
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result = STATE_WARNING;
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else if (strstr (status_line, "402"))
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result = STATE_WARNING;
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else if (strstr (status_line, "403"))
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result = STATE_WARNING;
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else if (strstr (status_line, "404"))
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result = STATE_WARNING;
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/* server errors result in a critical state */
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else if (strstr (status_line, "500"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "501"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "502"))
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result = STATE_CRITICAL;
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else if (strstr (status_line, "503"))
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result = STATE_CRITICAL;
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else
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result = STATE_UNKNOWN;
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}
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}
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}
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/* Return results */
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if (result == STATE_OK) {
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if (check_critical_time
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&& (end_time - start_time) > critical_time) result = STATE_CRITICAL;
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else if (check_warning_time
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&& (end_time - start_time) > warning_time) result =
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STATE_WARNING;
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/* Put some HTML in here to create a dynamic link */
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printf (_("REAL %s - %d second response time\n"),
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state_text (result),
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(int) (end_time - start_time));
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}
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else
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printf ("%s\n", status_line);
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/* close the connection */
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close (sd);
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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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{"IPaddress", required_argument, 0, 'I'},
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{"expect", required_argument, 0, 'e'},
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{"url", required_argument, 0, 'u'},
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{"port", required_argument, 0, 'p'},
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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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{"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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return ERROR;
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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, "+hvVI:H:e:u:p:w:c:t:", longopts,
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&option);
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if (c == -1 || c == EOF)
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break;
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switch (c) {
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case 'I': /* hostname */
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case 'H': /* hostname */
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if (server_address)
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break;
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else if (is_host (optarg))
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server_address = optarg;
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else
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usage2 (_("Invalid hostname/address"), optarg);
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break;
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case 'e': /* string to expect in response header */
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server_expect = optarg;
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break;
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case 'u': /* server URL */
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server_url = optarg;
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break;
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case 'p': /* port */
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if (is_intpos (optarg)) {
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server_port = atoi (optarg);
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}
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else {
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usage4 (_("Port must be a positive integer"));
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}
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break;
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case 'w': /* warning time threshold */
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if (is_intnonneg (optarg)) {
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warning_time = atoi (optarg);
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check_warning_time = true;
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}
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else {
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usage4 (_("Warning time must be a positive integer"));
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}
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break;
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case 'c': /* critical time threshold */
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if (is_intnonneg (optarg)) {
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critical_time = atoi (optarg);
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check_critical_time = true;
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}
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else {
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usage4 (_("Critical time must be a positive integer"));
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}
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break;
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case 'v': /* verbose */
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verbose = 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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socket_timeout = atoi (optarg);
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}
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else {
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usage4 (_("Timeout interval must be a positive integer"));
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}
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break;
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case 'V': /* version */
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print_revision (progname, NP_VERSION);
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exit (STATE_UNKNOWN);
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case 'h': /* help */
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print_help ();
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exit (STATE_UNKNOWN);
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case '?': /* usage */
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usage5 ();
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}
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}
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c = optind;
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if (server_address==NULL && argc>c) {
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if (is_host (argv[c])) {
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server_address = argv[c++];
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}
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else {
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usage2 (_("Invalid hostname/address"), argv[c]);
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}
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}
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if (server_address==NULL)
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usage4 (_("You must provide a server to check"));
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if (host_name==NULL)
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host_name = strdup (server_address);
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if (server_expect == NULL)
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server_expect = strdup(EXPECT);
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return validate_arguments ();
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}
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int
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validate_arguments (void)
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{
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return OK;
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}
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void
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print_help (void)
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{
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char *myport;
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xasprintf (&myport, "%d", PORT);
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print_revision (progname, NP_VERSION);
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printf ("Copyright (c) 1999 Pedro Leite <leite@cic.ua.pt>\n");
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printf (COPYRIGHT, copyright, email);
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printf ("%s\n", _("This plugin tests the REAL service on the specified host."));
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printf ("\n\n");
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print_usage ();
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printf (UT_HELP_VRSN);
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printf (UT_EXTRA_OPTS);
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printf (UT_HOST_PORT, 'p', myport);
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printf (" %s\n", "-u, --url=STRING");
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printf (" %s\n", _("Connect to this url"));
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printf (" %s\n", "-e, --expect=STRING");
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printf (_("String to expect in first line of server response (default: %s)\n"),
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EXPECT);
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printf (UT_WARN_CRIT);
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printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
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printf (UT_VERBOSE);
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printf ("\n");
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printf ("%s\n", _("This plugin will attempt to open an RTSP connection with the host."));
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printf ("%s\n", _("Successful connects return STATE_OK, refusals and timeouts return"));
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printf ("%s\n", _("STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful connects,"));
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printf ("%s\n", _("but incorrect response messages from the host result in STATE_WARNING return"));
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printf ("%s\n", _("values."));
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printf (UT_SUPPORT);
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}
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void
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print_usage (void)
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{
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printf ("%s\n", _("Usage:"));
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printf ("%s -H host [-e expect] [-p port] [-w warn] [-c crit] [-t timeout] [-v]\n", progname);
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}
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