Initial revision

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 257 insertions, 0 deletions

diff --git a/plugins-scripts/check_ircd.pl b/plugins-scripts/check_ircd.pl
new file mode 100755
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+++ b/plugins-scripts/check_ircd.pl
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+#!/usr/bin/perl -wT
+
+# -----------------------------------------------------------------------------
+# File Name:            check_ircd.pl
+#
+# Author:               Richard Mayhew - South Africa
+#
+# Date:                 1999/09/20
+#
+# $Id$
+#
+# Description:          This script will check to see if an IRCD is running
+#                       about how many users it has
+#
+# Email:                netsaint@splash.co.za
+#
+# -----------------------------------------------------------------------------
+# Copyright 1999 (c) Richard Mayhew
+#
+# Credits go to Ethan Galstad for coding Nagios
+#
+# If any changes are made to this script, please mail me a copy of the
+# changes :)
+#
+# Some code taken from Charlie Cook (check_disk.pl)
+#
+# License GPL
+#
+# -----------------------------------------------------------------------------
+# Date          Author          Reason
+# ----          ------          ------
+#
+# 1999/09/20    RM              Creation
+#
+# 1999/09/20    TP              Changed script to use strict, more secure by
+#                               specifying $ENV variables. The bind command is
+#                               still insecure through.  Did most of my work
+#                               with perl -wT and 'use strict'
+#
+# test using check_ircd.pl (irc-2.mit.edu|irc.erols.com|irc.core.com)
+#
+# ------------------------------------------------------------------[ Begin ]--
+
+BEGIN {
+        if ($0 =~ m/^(.*?)[\/\\]([^\/\\]+)$/) {
+                $runtimedir = $1;
+                $PROGNAME = $2;
+        }
+}
+
+# ----------------------------------------------------------------[ Require ]--
+
+require 5.004;
+
+# -------------------------------------------------------------------[ Uses ]--
+
+use Socket;
+use strict;
+use Getopt::Long;
+use vars qw($opt_V $opt_h $opt_t $opt_p $opt_H $opt_w $opt_c $verbose);
+use vars qw($PROGNAME);
+use lib $main::runtimedir;
+use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
+
+# ----------------------------------------------------[ Function Prototypes ]--
+
+sub print_help ();
+sub print_usage ();
+sub connection ($$$$);
+sub bindRemote ($$$);
+
+# -------------------------------------------------------------[ Enviroment ]--
+
+$ENV{PATH} = "";
+$ENV{ENV} = "";
+$ENV{BASH_ENV} = "";
+
+# -----------------------------------------------------------------[ Global ]--
+
+my $NICK="ircd$$";
+my $USER_INFO="monitor localhost localhost : ";
+        
+# -------------------------------------------------------------[ connection ]--
+sub connection ($$$$)
+{
+        my ($in_remotehost,$in_users,$in_warn,$in_crit) = @_;
+        my $state;
+        my $answer;
+
+        print "connection(debug): users = $in_users\n" if $verbose;
+        $in_users =~ s/\ //g;
+        
+        if ($in_users >= 0) {
+
+                if ($in_users > $in_crit) {
+                        $state = "CRITICAL";
+                        $answer = "Critical Number Of Clients Connected : $in_users (Limit = $in_crit)\n";
+
+                } elsif ($in_users > $in_warn) {
+                        $state = "WARNING";
+                        $answer = "Warning Number Of Clients Connected : $in_users (Limit = $in_warn)\n";
+
+                } else {
+                        $state = "OK";
+                        $answer = "IRCD ok - Current Local Users: $in_users\n";
+                }
+
+        } else {
+                $state = "UNKNOWN";
+                $answer = "Server $in_remotehost has less than 0 users! Something is Really WRONG!\n";
+        }
+        
+        print ClientSocket "quit\n";
+        print $answer;
+        exit $ERRORS{$state};
+}
+
+# ------------------------------------------------------------[ print_usage ]--
+
+sub print_usage () {
+        print "Usage: $PROGNAME -H <host> [-w <warn>] [-c <crit>] [-p <port>]\n";
+}
+
+# -------------------------------------------------------------[ print_help ]--
+
+sub print_help ()
+{
+        print_revision($PROGNAME,'$Revision$ ');
+        print "Copyright (c) 2000 Richard Mayhew/Karl DeBisschop
+
+Perl Check IRCD plugin for Nagios
+
+";
+        print_usage();
+        print "
+-H, --hostname=HOST
+   Name or IP address of host to check
+-w, --warning=INTEGER
+   Number of connected users which generates a warning state (Default: 50)
+-c, --critical=INTEGER
+   Number of connected users which generates a critical state (Default: 100)
+-p, --port=INTEGER
+   Port that the ircd daemon is running on <host> (Default: 6667)
+-v, --verbose
+   Print extra debugging information
+";
+}
+
+# -------------------------------------------------------------[ bindRemote ]--
+
+sub bindRemote ($$$)
+{
+        my ($in_remotehost, $in_remoteport, $in_hostname) = @_;
+        my $proto = getprotobyname('tcp');
+        my $sockaddr;
+        my $this;
+        my $thisaddr = gethostbyname($in_hostname);
+        my $that;
+        my ($name, $aliases,$type,$len,$thataddr) = gethostbyname($in_remotehost);
+#       ($name,$aliases,$type,$len,$thisaddr) = gethostbyname($in_hostname);
+
+        if (!socket(ClientSocket,AF_INET, SOCK_STREAM, $proto)) {
+            print "IRCD UNKNOWN: Could not start socket ($!)\n";
+            exit $ERRORS{"UNKNOWN"};
+        }
+        $sockaddr = 'S n a4 x8';
+        $this = pack($sockaddr, AF_INET, 0, $thisaddr);
+        $that = pack($sockaddr, AF_INET, $in_remoteport, $thataddr);
+        if (!bind(ClientSocket, $this)) {
+            print "IRCD UNKNOWN: Could not bind socket ($!)\n";
+            exit $ERRORS{"UNKNOWN"};
+        }
+        if (!connect(ClientSocket, $that)) { 
+            print "IRCD UNKNOWN: Could not connect socket ($!)\n";
+            exit $ERRORS{"UNKNOWN"};
+        }
+        select(ClientSocket); $| = 1; select(STDOUT);
+        return \*ClientSocket;
+}
+
+# ===================================================================[ MAIN ]==
+
+MAIN:
+{
+        my $hostname;
+
+        Getopt::Long::Configure('bundling');
+        GetOptions
+         ("V"   => \$opt_V,  "version"    => \$opt_V,
+                "h"   => \$opt_h,  "help"       => \$opt_h,
+                "v"   => \$verbose,"verbose"    => \$verbose,
+                "t=i" => \$opt_t,  "timeout=i"  => \$opt_t,
+                "w=i" => \$opt_w,  "warning=i"  => \$opt_w,
+                "c=i" => \$opt_c,  "critical=i" => \$opt_c,
+                "p=i" => \$opt_p,  "port=i"     => \$opt_p,
+                "H=s" => \$opt_H,  "hostname=s" => \$opt_H);
+
+        if ($opt_V) {
+                print_revision($PROGNAME,'$Revision$ ');
+                exit $ERRORS{'OK'};
+        }
+
+        if ($opt_h) {print_help(); exit $ERRORS{'OK'};}
+
+        ($opt_H) || ($opt_H = shift) || usage("Host name/address not specified\n");
+        my $remotehost = $1 if ($opt_H =~ /([-.A-Za-z0-9]+)/);
+        ($remotehost) || usage("Invalid host: $opt_H\n");
+
+        ($opt_w) || ($opt_w = shift) || ($opt_w = 50);
+        my $warn = $1 if ($opt_w =~ /^([0-9]+)$/);
+        ($warn) || usage("Invalid warning threshold: $opt_w\n");
+
+        ($opt_c) || ($opt_c = shift) || ($opt_c = 100);
+        my $crit = $1 if ($opt_c =~ /^([0-9]+)$/);
+        ($crit) || usage("Invalid critical threshold: $opt_c\n");
+
+        ($opt_p) || ($opt_p = shift) || ($opt_p = 6667);
+        my $remoteport = $1 if ($opt_p =~ /^([0-9]+)$/);
+        ($remoteport) || usage("Invalid port: $opt_p\n");
+
+        if ($opt_t && $opt_t =~ /^([0-9]+)$/) { $TIMEOUT = $1; }
+
+        # Just in case of problems, let's not hang Nagios
+        $SIG{'ALRM'} = sub {
+                print "Somthing is Taking a Long Time, Increase Your TIMEOUT (Currently Set At $TIMEOUT Seconds)\n";
+                exit $ERRORS{"UNKNOWN"};
+        };
+        
+        alarm($TIMEOUT);
+
+        chomp($hostname = `/bin/hostname`);
+        $hostname = $1 if ($hostname =~ /([-.a-zA-Z0-9]+)/);
+        my ($name, $alias, $proto) = getprotobyname('tcp');
+        print "MAIN(debug): hostname = $hostname\n" if $verbose;
+
+        print "MAIN(debug): binding to remote host: $remotehost -> $remoteport -> $hostname\n" if $verbose;
+        my $ClientSocket = &bindRemote($remotehost,$remoteport,$hostname);
+        
+        print ClientSocket "NICK $NICK\nUSER $USER_INFO\n";
+        
+        while (<ClientSocket>) {
+                print "MAIN(debug): default var = $_\n" if $verbose;
+
+                # DALnet,LagNet,UnderNet etc. Require this!
+                # Replies with a PONG when presented with a PING query.
+                # If a server doesn't require it, it will be ignored.
+        
+                if (m/^PING (.*)/) {print ClientSocket "PONG $1\n";}
+        
+                alarm(0);
+        
+                # Look for pattern in IRCD Output to gather Client Connections total.
+                connection($remotehost,$1,$warn,$crit) if (m/:I have\s+(\d+)/);
+        }
+        print "IRCD UNKNOWN: Unknown error - maybe could not authenticate\n";
+        exit $ERRORS{"UNKNOWN"};
+}