1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
#!/usr/bin/perl -wT
# -----------------------------------------------------------------------------
# File Name: check_ircd.pl
#
# Author: Richard Mayhew - South Africa
#
# Date: 1999/09/20
#
#
# 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 $ENV variables. The bind command is
# still insecure through. Did most of my work
# with perl -wT and 'use strict'
#
# test using check_ircd.pl (irc-2.mit.edu|irc.erols.com|irc.core.com)
# 2002/05/02 SG Fixed for Embedded Perl
#
# ----------------------------------------------------------------[ Require ]--
require 5.004;
# -------------------------------------------------------------------[ Uses ]--
use Socket;
use strict;
use Getopt::Long;
use vars qw($opt_V $opt_h $opt_t $opt_p $opt_H $opt_w $opt_c $verbose);
use vars qw($PROGNAME);
use lib utils.pm;
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 ]--
$PROGNAME = "check_ircd";
my $NICK="ircd$$";
my $USER_INFO="monitor localhost localhost : ";
# -------------------------------------------------------------[ connection ]--
sub connection ($$$$)
{
my ($in_remotehost,$in_users,$in_warn,$in_crit) = @_;
my $state;
my $answer;
print "connection(debug): users = $in_users\n" if $verbose;
$in_users =~ s/\ //g;
if ($in_users >= 0) {
if ($in_users > $in_crit) {
$state = "CRITICAL";
$answer = "Critical Number Of Clients Connected : $in_users (Limit = $in_crit)\n";
} elsif ($in_users > $in_warn) {
$state = "WARNING";
$answer = "Warning Number Of Clients Connected : $in_users (Limit = $in_warn)\n";
} else {
$state = "OK";
$answer = "IRCD ok - Current Local Users: $in_users\n";
}
} else {
$state = "UNKNOWN";
$answer = "Server $in_remotehost has less than 0 users! Something is Really WRONG!\n";
}
print ClientSocket "quit\n";
print $answer;
exit $ERRORS{$state};
}
# ------------------------------------------------------------[ print_usage ]--
sub print_usage () {
print "Usage: $PROGNAME -H <host> [-w <warn>] [-c <crit>] [-p <port>]\n";
}
# -------------------------------------------------------------[ print_help ]--
sub print_help ()
{
print_revision($PROGNAME,'@NP_VERSION@');
print "Copyright (c) 2000 Richard Mayhew/Karl DeBisschop
Perl Check IRCD plugin for Nagios
";
print_usage();
print "
-H, --hostname=HOST
Name or IP address of host to check
-w, --warning=INTEGER
Number of connected users which generates a warning state (Default: 50)
-c, --critical=INTEGER
Number of connected users which generates a critical state (Default: 100)
-p, --port=INTEGER
Port that the ircd daemon is running on <host> (Default: 6667)
-v, --verbose
Print extra debugging information
";
}
# -------------------------------------------------------------[ bindRemote ]--
sub bindRemote ($$)
{
my ($in_remotehost, $in_remoteport) = @_;
my $proto = getprotobyname('tcp');
my $sockaddr;
my $that;
my ($name, $aliases,$type,$len,$thataddr) = gethostbyname($in_remotehost);
if (!socket(ClientSocket,AF_INET, SOCK_STREAM, $proto)) {
print "IRCD UNKNOWN: Could not start socket ($!)\n";
exit $ERRORS{"UNKNOWN"};
}
$sockaddr = 'S n a4 x8';
$that = pack($sockaddr, AF_INET, $in_remoteport, $thataddr);
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,'@NP_VERSION@');
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);
my ($name, $alias, $proto) = getprotobyname('tcp');
print "MAIN(debug): binding to remote host: $remotehost -> $remoteport\n" if $verbose;
my $ClientSocket = &bindRemote($remotehost,$remoteport);
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"};
}
|