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1#!/usr/bin/perl -w
2
3# $Id: check_lotus.pl 1096 2005-01-25 09:04:26Z stanleyhopcroft $
4
5# Revision 1.1 2005/01/25 09:04:26 stanleyhopcroft
6# New plugin to check responsiveness of Louts Notes (v5 at least) servers
7#
8# Revision 1.10 2005-01-25 15:44:07+11 anwsmh
9# 1 use packet_utils instead of hard coding subroutines (pdump and tethereal)
10# 2 redo indentation using tabs (set at 4 spaces)
11#
12
13use strict ;
14
15use IO::Socket;
16use Getopt::Long ;
17
18my ($timeout, $debug, $lotus_host, $server, $indiv_dn, $packet_debug) ;
19
20use lib qw(/usr/local/nagios/libexec) ;
21use utils qw($TIMEOUT %ERRORS &print_revision &support &usage) ;
22use packet_utils qw(pdump &tethereal) ;
23
24my $PROGNAME = 'check_lotus_notes' ;
25
26sub print_help ();
27sub print_usage ();
28sub help ();
29sub version ();
30
31my $TEST_COUNT = 2 ;
32 # Number of Lotus client hellos sent without reply
33my $BUFFER_SIZE = 1500 ;
34 # buffer size used for 'recv' calls.
35my $LOTUS_PORT = 1352 ;
36
37Getopt::Long::Configure('no_ignore_case');
38GetOptions
39 ("V|version" => \&version,
40 "h|help" => \&help,
41 "v|debug" => \$debug,
42 "vv|i_packet_debug" => \$packet_debug,
43 "H|lotus_host=s"=> \$lotus_host,
44 # "I|indivual_dn:s" => \$indiv_dn,
45 "S|server:s" => \$server,
46 "T|t_timeout:i" => \$timeout,
47) ;
48
49usage("You must provide the DNS name or IP (v4) address of the Lotus server to be checked.\n")
50 unless $lotus_host and (
51 $lotus_host =~ m#^\d+\.\d+\.\d+\.\d+$# or
52 $lotus_host =~ m#^[\w\._-]+$#
53 ) ;
54
55$server ||= $lotus_host
56 if $lotus_host =~ m#^[\w-]+$# ;
57
58usage("You must provide a server option unless the lotus_host option looks like an unqualified host name.\n")
59 unless $server ;
60
61$timeout ||= $TIMEOUT ;
62$debug = 1
63 if $packet_debug ;
64
65my $server_dn = "CN=\U$server" . '(?:/\w+=[\w -]+)*' ;
66
67 # Definitions of query strings. Change at your own risk :)
68 # This info was gathered with tcpdump while using a Lotus Notes 5 client,
69 # so I'm not sure of what each value is.
70
71my $lotus_client_hello = &tethereal(<<'End_of_Tethereal_trace', '82') ;
720030 ff ff dc c5 00 00 82 00 00 00 77 00 00 00 02 00 ..........w.....
730040 00 40 02 0f 00 07 00 39 05 9e 45 54 ad ad 03 00 .@.....9..ET....
740050 00 00 00 02 00 2f 00 00 00 00 00 00 00 00 00 40 ...../.........@
750060 1f a0 af 19 d8 92 da 37 78 c9 ce 60 5e 35 b8 f7 .......7x..`^5..
760070 4e 05 00 10 00 0d 00 00 00 00 00 00 00 00 00 00 N...............
770080 00 00 00 00 00 02 00 08 00 9c dc 22 00 7c 6f 25 ...........".|o%
780090 4a 08 00 10 00 00 00 00 00 00 00 00 00 00 00 00 J...............
7900a0 00 00 00 00 00 04 00 10 00 ba ac 8c 49 67 ee a1 ............Ig..
8000b0 22 6f 63 bb 04 b4 75 0b 8f 00 "oc...u...
81End_of_Tethereal_trace
82
83 # XXXX
84 # Notes 5 accepts this
85 # _wrongly_ encoded DN
86 # but in general the
87 # server will reset
88 # the connection if
89 # it receives malformed
90 # packets.
91
92my $lotus_client_m1 = &tethereal(<<'End_of_Tethereal_trace', 'de') ;
930000 de 00 00 00 d4 00 00 00 13 00 00 40 01 00 9e 45 ...........@...E
940010 54 ad ad 03 00 00 00 00 02 00 29 13 23 00 b9 68 T.........).#..h
950020 25 00 9f 87 27 00 8f f4 25 00 00 00 88 00 24 00 %...'...%.....$.
960030 28 00 00 00 42 56 04 00 31 2e 30 00 42 43 01 00 (...BV..1.0.BC..
970040 03 42 41 01 00 30 42 4c 02 00 76 02 4e 4e 50 00 .BA..0BL..v.NNP.
980050 cf ee 9d 19 99 ca e0 bf 97 d3 59 a1 c5 78 16 82 ..........Y..x..
990060 76 09 8c 2c 96 ae 5a c1 15 bd 4e e9 b7 0f a9 d4 v..,..Z...N.....
1000070 5a 03 d9 0d bc e4 7d 4f e0 f2 79 89 cf cd 23 19 Z.....}O..y...#.
1010080 40 55 98 81 98 be d9 17 8d 69 8e 09 de c8 e8 92 @U.......i......
1020090 24 86 6f 5a 09 81 1f 71 be 29 b7 47 78 8c 2e 00 $.oZ...q.).Gx...
10300a0 45 4e 04 00 95 63 00 00 4d 41 08 00 64 a1 b4 b3 EN...c..MA..d...
10400b0 a1 01 45 c2 80 00 50 55 52 53 41 46 22 00 43 4e ..E...PURSAF".CN
10500c0 3d 4d 72 20 46 6f 6f 2f 4f 55 3d 42 61 72 20 68 =Mr Foo/OU=Bar h
10600d0 6f 74 65 6c 2f 4f 3d 42 61 7a 20 4a 75 6e 63 74 otel/O=Baz Junct
10700e0 69 6f 6e ion
108End_of_Tethereal_trace
109
110my $buff = '';
111
112my $valid_resp_cr = sub {
113 my ($resp, $dn, $err_ind_sr) = @_ ;
114 if ( $resp =~ /($dn)/ ) {
115 return $1
116 } else {
117 ($$err_ind_sr) = $resp =~ m#(CN=[\w -]+(?:/\w+=[\w -]+)*)# ;
118 return 0 ;
119 }
120} ;
121
122my @send = (
123 { Msg => 'Helo', Send => $lotus_client_hello, Ok => $valid_resp_cr },
124 { Msg => 'm1', Send => $lotus_client_m1, Ok => $valid_resp_cr },
125) ;
126
127my $tcp ;
128
129eval {
130
131 $tcp = IO::Socket::INET->new(Proto => 'tcp', PeerAddr => $lotus_host, PeerPort => $LOTUS_PORT, Timeout => $timeout)
132 # Some versions (eg 1.1603) croak on a connect failure ..
133} ;
134
135&outahere("Connect to $lotus_host:$LOTUS_PORT failed:", $@)
136 if $@ || ! defined($tcp) ;
137
138my $found = '' ;
139
140foreach (@send) {
141
142 print STDERR "Sending Lotus client $_->{Msg} to $lotus_host.\n"
143 if $debug ;
144
145 &pdump($_->{Send})
146 if $packet_debug ;
147
148 eval {
149
150 local $SIG{"ALRM"} = sub { die 'Alarm clock restart' } ;
151
152 alarm($timeout) ;
153
154 $tcp->send($_->{Send}, 0) ||
155 &outahere("Send to $lotus_host failed: $!") ;
156
157 defined( $tcp->recv($buff, $BUFFER_SIZE, 0 ) ) ||
158 &outahere("Recv from $lotus_host failed: $!")
159
160 } ;
161
162 alarm(0) ;
163
164 &outahere('Unexpected exception raised by eval:', $@)
165 if $@ and $@ !~ /Alarm clock restart/ ;
166
167 &outahere("Timeout after $timeout secs - no response from $lotus_host")
168 if $@ and $@ =~ /Alarm clock restart/ ;
169
170 &outahere("Lotus server $lotus_host reset connection - client protocol (malformed packet sent) error", $@)
171 if $@ and $@ =~ /reset/ ;
172
173 &outahere("Empty recv buff after sending client $_->{Msg} and waiting $timeout secs. NB _no_ timeout exception.")
174 unless $buff ;
175
176 &pdump($buff)
177 if $packet_debug ;
178
179 my $err = '' ;
180
181 &outahere(qq(Response from $lotus_host failed to match CN=$server/.. got "$err") )
182 unless $found = $_->{Ok}->($buff, $server_dn, \$err) ;
183
184 print STDERR "Received Ok reply from $lotus_host - found DN $found in response.\n"
185 if $debug ;
186
187}
188
189close $tcp;
190
191print "Ok. Lotus server $lotus_host responded with $found after ", scalar @send, " packet dialogue.\n" ;
192exit $ERRORS{OK} ;
193
194=begin comment
195
196Normal response from Lotus Notes 5 server
197
1980000 74 00 00 00 69 00 00 00 03 00 00 40 02 0f 00 05 t...i......@....
1990010 00 3d 05 60 f0 3a 38 03 03 00 00 00 00 02 00 2f .=.`.:8......../
2000020 00 26 00 00 00 00 00 00 00 40 1f 3d 73 76 0e 57 .&.......@.=sv.W
2010030 e0 d7 67 cd a3 50 10 e0 99 24 b4 43 4e 3d 43 42 ..g..P...$.CN=CB
2020040 52 4e 4f 54 45 53 30 31 2f 4f 55 3d 53 45 52 56 RNOTES01/OU=SERV
2030050 45 52 53 2f 4f 3d 49 50 41 75 73 74 72 61 6c 69 ERS/O=IPAustrali
2040060 61 05 00 10 00 09 00 00 00 00 00 00 00 00 00 00 a...............
2050070 00 00 00 00 00 00
206
207=end comment
208
209=cut
210
211sub outahere {
212 print "Failed. @_.\n" ;
213 exit $ERRORS{CRITICAL} ;
214}
215
216sub print_usage () {
217 print "Usage: $PROGNAME -H <lotus_host (name _or_ address)>..) [-S <lotus_server name> -T <timeout> -v ]\n";
218}
219
220sub print_help () {
221 print_revision($PROGNAME,'$Revision: 1096 $ ');
222 print "Copyright (c) 2004 Ed Rolison/S Hopcroft
223
224Perl Check Lotus Notes plugin for Nagios.
225
226Returns OK if the named server responds with its name.
227
228";
229 print_usage();
230 print '
231-H, --lotus_host:STRING
232 Name or IP Address of Lotus server to be checked.
233-I, --individual_dn:NOT IMPLEMENTED
234 String of form CN=\w+(?:/OU=\w+)?/O=\w+
235-S, --server:STRING
236 Alpha numeric string specifying the Lotus server name (the CN by which the server is known by
237 in the Domino directory). Defaults to host name if the host name does not look like an IP address.
238-T, --packet-timeout:INTEGER
239 Time to wait for TCP dialogue to complete = send + rcv times (default Nagios timeout [$TIMEOUT sec]).
240-v, --debug
241 Debugging output.
242-vv, --packet_debug
243 Packet dump. Please post to Nag users in the event of trouble with this plugin.
244-h, --help
245 This stuff.
246
247';
248 support();
249}
250
251sub version () {
252 print_revision($PROGNAME,'$Revision: 1096 $ ');
253 exit $ERRORS{'OK'};
254}
255
256sub help () {
257 print_help();
258 exit $ERRORS{'OK'};
259}
260