1 files changed, 287 insertions, 0 deletions

diff --git a/plugins/check_game.c b/plugins/check_game.c
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+++ b/plugins/check_game.c
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+/******************************************************************************
+ *
+ * CHECK_GAME.C
+ *
+ * Program: GAME plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999 Ian Cass (ian@knowledge.com)
+ *
+ * Last Modified: $Date$
+ *
+ * Mod History
+ *
+ * 25-8-99 Ethan Galstad <nagios@nagios.org>
+ *         Integrated with common plugin code, minor cleanup stuff
+ *
+ * 17-8-99 version 1.1b
+ *
+ * 17-8-99 make port a separate argument so we can use something like
+ *         check_game q2s!27910 with the probe set up as
+ *         check_game $ARG1$ $HOSTADDRESS$ $ARG2$
+ *
+ * 17-8-99 Put in sanity check for ppl who enter the wrong server type
+ *
+ * 17-8-99 Release version 1.0b
+ *
+ * Command line: CHECK_GAME <server type> <ip_address> [port]
+ *
+ * server type = a server type that qstat understands (type qstat & look at the -default line)
+ * ip_address  = either a dotted address or a FQD name
+ * port        = defaults game default port
+ *                        
+ *
+ * Description:
+ * 
+ * Needed to explore writing my own probes for nagios. It looked
+ * pretty simple so I thought I'd write one for monitoring the status
+ * of game servers. It uses qstat to do the actual monitoring and
+ * analyses the result. Doing it this way means I can support all the
+ * servers that qstat does and will do in the future.
+ *
+ *
+ * Dependencies:
+ *
+ * This plugin uses the 'qstat' command If you don't
+ * have the package installed you will need to download it from 
+ * http://www.activesw.com/people/steve/qstat.html or any popular files archive
+ * before you can use this plugin.
+ *
+ * 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.
+ *
+ *****************************************************************************/
+
+#include "config.h"
+#include "common.h"
+#include "utils.h"
+
+int process_arguments (int, char **);
+
+#define QSTAT_DATA_DELIMITER    ","
+
+#define QSTAT_HOST_ERROR        "ERROR"
+#define QSTAT_HOST_DOWN         "DOWN"
+#define QSTAT_HOST_TIMEOUT      "TIMEOUT"
+#define QSTAT_MAX_RETURN_ARGS   12
+
+char server_ip[MAX_HOST_ADDRESS_LENGTH];
+char game_type[MAX_INPUT_BUFFER];
+char port[MAX_INPUT_BUFFER];
+
+int qstat_game_field = 2;
+int qstat_map_field = 3;
+int qstat_ping_field = 5;
+
+
+int
+main (int argc, char **argv)
+{
+        char command_line[MAX_INPUT_BUFFER];
+        int result;
+        FILE *fp;
+        char input_buffer[MAX_INPUT_BUFFER];
+        char response[MAX_INPUT_BUFFER];
+        char *temp_ptr;
+        int found;
+        char *p, *ret[QSTAT_MAX_RETURN_ARGS];
+        int i;
+
+        result = process_arguments (argc, argv);
+
+        if (result != OK) {
+                printf ("Incorrect arguments supplied\n");
+                printf ("\n");
+                print_revision (argv[0], "$Revision$");
+                printf ("Copyright (c) 1999 Ian Cass, Knowledge Matters Limited\n");
+                printf ("License: GPL\n");
+                printf ("\n");
+                printf
+                        ("Usage: %s <game> <ip_address> [-p port] [-gf game_field] [-mf map_field] [-pf ping_field]\n",
+                         argv[0]);
+                printf ("\n");
+                printf ("Options:\n");
+                printf
+                        (" <game>        = Game type that is recognised by qstat (without the leading dash)\n");
+                printf
+                        (" <ip_address>  = The IP address of the device you wish to query\n");
+                printf (" [port]        = Optional port of which to connect\n");
+                printf
+                        (" [game_field]  = Field number in raw qstat output that contains game name\n");
+                printf
+                        (" [map_field]   = Field number in raw qstat output that contains map name\n");
+                printf
+                        (" [ping_field]  = Field number in raw qstat output that contains ping time\n");
+                printf ("\n");
+                printf ("Notes:\n");
+                printf
+                        ("- This plugin uses the 'qstat' command, the popular game server status query tool .\n");
+                printf
+                        ("  If you don't have the package installed, you will need to download it from\n");
+                printf
+                        ("  http://www.activesw.com/people/steve/qstat.html before you can use this plugin.\n");
+                printf ("\n");
+                return STATE_UNKNOWN;
+        }
+
+        result = STATE_OK;
+
+        /* create the command line to execute */
+        snprintf (command_line, sizeof (command_line) - 1, "%s -raw %s -%s %s%s",
+                                                PATH_TO_QSTAT, QSTAT_DATA_DELIMITER, game_type, server_ip, port);
+        command_line[sizeof (command_line) - 1] = 0;
+
+        /* run the command */
+        fp = popen (command_line, "r");
+        if (fp == NULL) {
+                printf ("Error - Could not open pipe: %s\n", command_line);
+                return STATE_UNKNOWN;
+        }
+
+        found = 0;
+        fgets (input_buffer, MAX_INPUT_BUFFER - 1, fp); /* Only interested in the first line */
+
+        /* strip the newline character from the end of the input */
+        input_buffer[strlen (input_buffer) - 1] = 0;
+
+        /* sanity check */
+        /* was thinking about running qstat without any options, capturing the
+           -default line, parsing it & making an array of all know server types
+           but thought this would be too much hassle considering this is a tool
+           for intelligent sysadmins (ha). Could put a static array of known 
+           server types in a header file but then we'd be limiting ourselves
+
+           In the end, I figured I'd simply let an error occur & then trap it
+         */
+
+        if (!strncmp (input_buffer, "unknown option", 14)) {
+                printf ("ERROR: Host type parameter incorrect!\n");
+                result = STATE_CRITICAL;
+                return result;
+        }
+
+        /* initialize the returned data buffer */
+        for (i = 0; i < QSTAT_MAX_RETURN_ARGS; i++)
+                ret[i] = "";
+
+        i = 0;
+        p = (char *) strtok (input_buffer, QSTAT_DATA_DELIMITER);
+        while (p != NULL) {
+                ret[i] = p;
+                p = (char *) strtok (NULL, QSTAT_DATA_DELIMITER);
+                i++;
+                if (i >= QSTAT_MAX_RETURN_ARGS)
+                        break;
+        }
+
+        if (strstr (ret[2], QSTAT_HOST_ERROR)) {
+                printf ("ERROR: Host not found\n");
+                result = STATE_CRITICAL;
+        }
+        else if (strstr (ret[2], QSTAT_HOST_DOWN)) {
+                printf ("ERROR: Game server down or unavailable\n");
+                result = STATE_CRITICAL;
+        }
+        else if (strstr (ret[2], QSTAT_HOST_TIMEOUT)) {
+                printf ("ERROR: Game server timeout\n");
+                result = STATE_CRITICAL;
+        }
+        else {
+                printf ("OK: %s (%s), Ping: %s ms\n", ret[qstat_game_field],
+                                                ret[qstat_map_field], ret[qstat_ping_field]);
+        }
+
+        /* close the pipe */
+        pclose (fp);
+
+        return result;
+}
+
+
+
+int
+process_arguments (int argc, char **argv)
+{
+        int x;
+
+        /* not enough options were supplied */
+        if (argc < 3)
+                return ERROR;
+
+        /* first option is always the game type */
+        strncpy (game_type, argv[1], sizeof (game_type) - 1);
+        game_type[sizeof (game_type) - 1] = 0;
+
+        /* Second option is always the server name */
+        strncpy (server_ip, argv[2], sizeof (server_ip) - 1);
+        server_ip[sizeof (server_ip) - 1] = 0;
+
+        /* process all remaining arguments */
+        for (x = 4; x <= argc; x++) {
+
+                /* we got the port number to connect to */
+                if (!strcmp (argv[x - 1], "-p")) {
+                        if (x < argc) {
+                                snprintf (port, sizeof (port) - 2, ":%s", argv[x]);
+                                port[sizeof (port) - 1] = 0;
+                                x++;
+                        }
+                        else
+                                return ERROR;
+                }
+
+                /* we got the game field */
+                else if (!strcmp (argv[x - 1], "-gf")) {
+                        if (x < argc) {
+                                qstat_game_field = atoi (argv[x]);
+                                if (qstat_game_field < 0 || qstat_game_field > QSTAT_MAX_RETURN_ARGS)
+                                        return ERROR;
+                                x++;
+                        }
+                        else
+                                return ERROR;
+                }
+
+                /* we got the map field */
+                else if (!strcmp (argv[x - 1], "-mf")) {
+                        if (x < argc) {
+                                qstat_map_field = atoi (argv[x]);
+                                if (qstat_map_field < 0 || qstat_map_field > QSTAT_MAX_RETURN_ARGS)
+                                        return ERROR;
+                                x++;
+                        }
+                        else
+                                return ERROR;
+                }
+
+                /* we got the ping field */
+                else if (!strcmp (argv[x - 1], "-pf")) {
+                        if (x < argc) {
+                                qstat_ping_field = atoi (argv[x]);
+                                if (qstat_ping_field < 0 || qstat_ping_field > QSTAT_MAX_RETURN_ARGS)
+                                        return ERROR;
+                                x++;
+                        }
+                        else
+                                return ERROR;
+                }
+
+                /* else we got something else... */
+                else
+                        return ERROR;
+        }
+
+        return OK;
+}