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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+#!/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"};
+}