241 lines
6.9 KiB
Perl
Executable file
241 lines
6.9 KiB
Perl
Executable file
#!@PERL@ -w
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# -----------------------------------------------------------------------------
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# File Name: check_ircd.pl
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#
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# Author: Richard Mayhew - South Africa
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#
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# Date: 1999/09/20
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#
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#
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# Description: This script will check to see if an IRCD is running
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# about how many users it has
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#
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# Email: netsaint@splash.co.za
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#
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# -----------------------------------------------------------------------------
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# Copyright 1999 (c) Richard Mayhew
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#
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# If any changes are made to this script, please mail me a copy of the
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# changes :)
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#
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# Some code taken from Charlie Cook (check_disk.pl)
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#
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# License GPL
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#
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# -----------------------------------------------------------------------------
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# Date Author Reason
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# ---- ------ ------
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#
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# 1999/09/20 RM Creation
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#
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# 1999/09/20 TP Changed script to use strict, more secure by
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# specifying $ENV variables. The bind command is
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# still insecure through. Did most of my work
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# with perl -wT and 'use strict'
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#
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# test using check_ircd.pl (irc-2.mit.edu|irc.erols.com|irc.core.com)
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# 2002/05/02 SG Fixed for Embedded Perl
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#
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# ----------------------------------------------------------------[ Require ]--
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require 5.004;
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# -------------------------------------------------------------------[ Uses ]--
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use Socket;
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use strict;
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use Getopt::Long;
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use vars qw($opt_V $opt_h $opt_t $opt_p $opt_H $opt_w $opt_c $verbose);
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use vars qw($PROGNAME);
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use FindBin;
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use lib "$FindBin::Bin";
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use utils qw($TIMEOUT %ERRORS &print_revision &support &usage);
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# ----------------------------------------------------[ Function Prototypes ]--
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sub print_help ();
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sub print_usage ();
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sub connection ($$$$);
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sub bindRemote ($$);
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# -------------------------------------------------------------[ Enviroment ]--
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$ENV{'PATH'}='@TRUSTED_PATH@';
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$ENV{'BASH_ENV'}='';
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$ENV{'ENV'}='';
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# -----------------------------------------------------------------[ Global ]--
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$PROGNAME = "check_ircd";
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# nickname shouldn't be longer than 9 chars, this might happen with large PIDs
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# To prevent this, we cut of the part over 10000
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my $NICK="ircd" . $$ % 10000;
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my $USER_INFO="monitor localhost localhost : ";
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# -------------------------------------------------------------[ connection ]--
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sub connection ($$$$)
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{
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my ($in_remotehost,$in_users,$in_warn,$in_crit) = @_;
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my $state;
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my $answer;
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print "connection(debug): users = $in_users\n" if $verbose;
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$in_users =~ s/\ //g;
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if ($in_users >= 0) {
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if ($in_users > $in_crit) {
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$state = "CRITICAL";
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$answer = "Critical Number Of Clients Connected : $in_users (Limit = $in_crit)\n";
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} elsif ($in_users > $in_warn) {
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$state = "WARNING";
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$answer = "Warning Number Of Clients Connected : $in_users (Limit = $in_warn)\n";
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} else {
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$state = "OK";
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$answer = "IRCD ok - Current Local Users: $in_users\n";
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}
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} else {
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$state = "UNKNOWN";
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$answer = "Server $in_remotehost has less than 0 users! Something is Really WRONG!\n";
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}
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print ClientSocket "quit\n";
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print $answer;
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exit $ERRORS{$state};
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}
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# ------------------------------------------------------------[ print_usage ]--
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sub print_usage () {
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print "Usage: $PROGNAME -H <host> [-w <warn>] [-c <crit>] [-p <port>]\n";
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}
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# -------------------------------------------------------------[ print_help ]--
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sub print_help ()
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{
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print_revision($PROGNAME,'@NP_VERSION@');
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print "Copyright (c) 2000 Richard Mayhew/Karl DeBisschop
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Perl Check IRCD plugin for monitoring
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";
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print_usage();
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print "
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-H, --hostname=HOST
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Name or IP address of host to check
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-w, --warning=INTEGER
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Number of connected users which generates a warning state (Default: 50)
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-c, --critical=INTEGER
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Number of connected users which generates a critical state (Default: 100)
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-p, --port=INTEGER
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Port that the ircd daemon is running on <host> (Default: 6667)
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-v, --verbose
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Print extra debugging information
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";
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}
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# -------------------------------------------------------------[ bindRemote ]--
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sub bindRemote ($$)
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{
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my ($in_remotehost, $in_remoteport) = @_;
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my $proto = getprotobyname('tcp');
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my $sockaddr;
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my $that;
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my ($name, $aliases,$type,$len,$thataddr) = gethostbyname($in_remotehost);
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if (!socket(ClientSocket,AF_INET, SOCK_STREAM, $proto)) {
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print "IRCD UNKNOWN: Could not start socket ($!)\n";
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exit $ERRORS{"UNKNOWN"};
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}
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$sockaddr = 'S n a4 x8';
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$that = pack($sockaddr, AF_INET, $in_remoteport, $thataddr);
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if (!connect(ClientSocket, $that)) {
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print "IRCD UNKNOWN: Could not connect socket ($!)\n";
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exit $ERRORS{"UNKNOWN"};
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}
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select(ClientSocket); $| = 1; select(STDOUT);
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return \*ClientSocket;
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}
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# ===================================================================[ MAIN ]==
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MAIN:
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{
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my $hostname;
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Getopt::Long::Configure('bundling');
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GetOptions
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("V" => \$opt_V, "version" => \$opt_V,
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"h" => \$opt_h, "help" => \$opt_h,
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"v" => \$verbose,"verbose" => \$verbose,
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"t=i" => \$opt_t, "timeout=i" => \$opt_t,
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"w=i" => \$opt_w, "warning=i" => \$opt_w,
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"c=i" => \$opt_c, "critical=i" => \$opt_c,
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"p=i" => \$opt_p, "port=i" => \$opt_p,
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"H=s" => \$opt_H, "hostname=s" => \$opt_H);
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if ($opt_V) {
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print_revision($PROGNAME,'@NP_VERSION@');
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exit $ERRORS{'UNKNOWN'};
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}
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if ($opt_h) {print_help(); exit $ERRORS{'UNKNOWN'};}
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($opt_H) || ($opt_H = shift @ARGV) || usage("Host name/address not specified\n");
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my $remotehost = $1 if ($opt_H =~ /([-.A-Za-z0-9]+)/);
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($remotehost) || usage("Invalid host: $opt_H\n");
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($opt_w) || ($opt_w = shift @ARGV) || ($opt_w = 50);
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my $warn = $1 if ($opt_w =~ /^([0-9]+)$/);
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($warn) || usage("Invalid warning threshold: $opt_w\n");
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($opt_c) || ($opt_c = shift @ARGV) || ($opt_c = 100);
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my $crit = $1 if ($opt_c =~ /^([0-9]+)$/);
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($crit) || usage("Invalid critical threshold: $opt_c\n");
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($opt_p) || ($opt_p = shift @ARGV) || ($opt_p = 6667);
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my $remoteport = $1 if ($opt_p =~ /^([0-9]+)$/);
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($remoteport) || usage("Invalid port: $opt_p\n");
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if ($opt_t && $opt_t =~ /^([0-9]+)$/) { $TIMEOUT = $1; }
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# Just in case of problems, let's not hang the monitoring system
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$SIG{'ALRM'} = sub {
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print "Somthing is Taking a Long Time, Increase Your TIMEOUT (Currently Set At $TIMEOUT Seconds)\n";
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exit $ERRORS{"UNKNOWN"};
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};
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alarm($TIMEOUT);
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my ($name, $alias, $proto) = getprotobyname('tcp');
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print "MAIN(debug): binding to remote host: $remotehost -> $remoteport\n" if $verbose;
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my $ClientSocket = &bindRemote($remotehost,$remoteport);
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print ClientSocket "NICK $NICK\nUSER $USER_INFO\n";
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while (<ClientSocket>) {
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print "MAIN(debug): default var = $_\n" if $verbose;
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# DALnet,LagNet,UnderNet etc. Require this!
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# Replies with a PONG when presented with a PING query.
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# If a server doesn't require it, it will be ignored.
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if (m/^PING (.*)/) {print ClientSocket "PONG $1\n";}
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alarm(0);
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# Look for pattern in IRCD Output to gather Client Connections total.
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connection($remotehost,$1,$warn,$crit) if (m/:I have\s+(\d+)/);
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}
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print "IRCD UNKNOWN: Unknown error - maybe could not authenticate\n";
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exit $ERRORS{"UNKNOWN"};
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}
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