382 lines
12 KiB
Perl
Executable file
382 lines
12 KiB
Perl
Executable file
#!/usr/bin/perl -w
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# $Id: check_ica_metaframe_pub_apps.pl 1098 2005-01-25 09:07:39Z stanleyhopcroft $
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# Revision 1.1 2005/01/25 09:07:39 stanleyhopcroft
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# Replacement (structured name mainly) for check_citrix: check of ICA browse service
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#
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# Revision 1.1 2005-01-25 17:00:24+11 anwsmh
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# Initial revision
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#
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use strict ;
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use IO::Socket;
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use IO::Select;
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use Getopt::Long ;
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my ($bcast_addr, $timeout, $debug, @citrix_servers, $crit_pub_apps, $warn_pub_apps, $long_list) ;
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use lib qw(/usr/local/nagios/libexec) ;
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use utils qw(%ERRORS &print_revision &support &usage) ;
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use packet_utils qw(&pdump &tethereal) ;
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my $PROGNAME = 'check_ica_metaframe_pub_apps' ;
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sub print_help ();
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sub print_usage ();
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sub help ();
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sub version ();
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# You might have to change this...
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my $PACKET_TIMEOUT = 1;
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# Number of seconds to wait for further UDP packets
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my $TEST_COUNT = 2;
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# Number of datagrams sent without reply
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my $BUFFER_SIZE = 1500;
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# buffer size used for 'recv' calls.
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my $LONG_LIST = 0 ;
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# this is for if you have many published applications.
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# if you set it, it won't do any harm, but may slow the test
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# down a little. (Since it does a 'recv' twice instead of
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# once and therefore may have to wait for a timeout).
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my $ICA_PORT = 1604;
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# what port ICA runs on. Unlikely to change.
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Getopt::Long::Configure('bundling', 'no_ignore_case');
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GetOptions
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("V|version" => \&version,
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"h|help" => \&help,
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"v|verbose" => \$debug,
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"B|broadcast_addr:s" => \$bcast_addr,
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"C|citrix_servers:s" => \@citrix_servers,
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"L|long_list" => \$long_list,
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"P|crit_pub_apps:s" => \$crit_pub_apps,
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"T|Packet_timeout:i" => \$timeout,
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"W|warn_pub_apps:s" => \$warn_pub_apps,
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) ;
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my $broadcast_addr = $1 if $bcast_addr and $bcast_addr =~ m#(\d+\.\d+\.\d+\.\d+)# ;
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usage("Invalid broadcast address: $bcast_addr\n")
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if $bcast_addr and not defined($broadcast_addr) ;
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usage("You must provide either the names of citrix servers or the broadcast address of the subnet containing them\n")
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unless (@citrix_servers or $broadcast_addr) ;
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my @target = defined $broadcast_addr ? ($broadcast_addr) : @citrix_servers ;
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usage("You must provide the names of the published applications that the Citrix browser should be advertising\n")
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unless $crit_pub_apps or $warn_pub_apps ;
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my $Timeout = $timeout
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if defined $timeout ;
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$Timeout = $PACKET_TIMEOUT
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unless defined $Timeout ;
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$long_list = $LONG_LIST
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unless defined $long_list ;
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my @crit_pub_apps = $crit_pub_apps ? split(/,/, $crit_pub_apps) : () ;
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my @warn_pub_apps = $warn_pub_apps ? split(/,/, $warn_pub_apps) : () ;
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# Definitions of query strings. Change at your own risk :)
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# this info was gathered with tcpdump whilst trying to use an ICA client,
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# so I'm not 100% sure of what each value is.
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my $bcast_helo = &tethereal(<<'End_of_Tethereal_trace', '1e') ;
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0020 ff ff 04 d6 06 44 00 26 4a 76 1e 00 01 30 02 fd .....D.&Jv...0..
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0030 a8 e3 00 02 f5 95 9f f5 30 07 00 00 00 00 00 00 ........0.......
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0040 00 00 00 00 00 00 01 00 .......
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End_of_Tethereal_trace
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my $bcast_query_app = &tethereal(<<'End_of_Tethereal_trace', '24') ;
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0020 64 17 04 50 06 44 00 2c 85 6a 24 00 01 32 02 fd d..P.D.,.j$..2..
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0030 a8 e3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
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0040 00 00 00 00 00 00 21 00 02 00 00 00 00 00 ......!......
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End_of_Tethereal_trace
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my $direct_helo = &tethereal(<<'End_of_Tethereal_trace', '20') ;
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0020 64 17 05 0f 06 44 00 28 ab b5 20 00 01 30 02 fd d....D.(.. ..0..
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0030 a8 e3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
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0040 00 00 00 00 00 00 00 00 00 00 .........
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End_of_Tethereal_trace
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my $direct_query_app = &tethereal(<<'End_of_Tethereal_trace', '2c') ;
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0020 64 17 05 10 06 44 00 34 7a 9a 2c 00 02 32 02 fd d....D.4z.,..2..
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0030 a8 e3 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
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0040 00 00 00 00 00 00 21 00 02 00 01 00 00 00 00 00 ......!.........
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0050 00 00 00 00 00 00 ......
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End_of_Tethereal_trace
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my $Udp = IO::Socket::INET->new( Proto => 'udp' )
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|| die "Socket failure: $!";
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# Select is here to allow us to set timeouts on the connections.
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# Otherwise they just 'stop' until a server appears.
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my $select = IO::Select->new($Udp)
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|| die "Select failure: $!";
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# Helo needs to be broadcastt, but query does not.
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$Udp->sockopt(SO_BROADCAST, 1 );
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my ($remote_host, $buff, $buff2, $raddr, $rport, $rhost, @remote_response);
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my ($query_message, $send_addr, $this_test) ;
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$buff = $buff2 = '';
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$this_test = 0;
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# If there is no response to the first helo packet it will be resent
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# up to TEST_COUNT (see at the top).
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while ( ++$this_test <= $TEST_COUNT && !$buff ) {
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print "Sending helo datagram. datagram number: ", $this_test, "\n"
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if $debug ;
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# If we have multiple targets, we probe each of them until we get a
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# response...
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foreach my $destination (@target) {
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$query_message = $broadcast_addr ? $bcast_helo : $direct_helo ;
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print "Querying $destination for master browser\n"
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if $debug ;
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$send_addr = sockaddr_in($ICA_PORT, inet_aton($destination) );
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&pdump($query_message)
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if $debug ;
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$Udp->send($query_message, 0, $send_addr );
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if ( $select->can_read($Timeout) ) {
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$remote_host = $Udp->recv($buff, $BUFFER_SIZE, 0 );
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}
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last
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if $buff ;
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sleep 1 ;
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}
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}
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# Ok we've looped several times, looking for a response. If we don't have one
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# yet, we simply mark the whole lot as being unavailable.
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unless ( $buff ) {
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print "Failed. No response to helo datagram (master browser query) from ", $broadcast_addr ? $broadcast_addr : "@citrix_servers", ".\n" ;
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exit $ERRORS{CRITICAL} ;
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}
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($rport, $raddr) = sockaddr_in( $remote_host );
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$rhost = gethostbyaddr( $raddr, AF_INET );
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my @tmpbuf = unpack('C*', $buff );
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if ( $debug ) {
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print "$rhost:$rport responded with: ", length($buff), " bytes\n";
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&pdump($buff) ;
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}
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# Now we have a response, then we need to figure out the master browser, and
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# query it for published applications...
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my $master_browser = join '.', @tmpbuf[32..35] ;
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# Ok should probably error check this, because it's remotely possible
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# that a server response might be completely wrong...
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print "Master browser = $master_browser\n"
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if $debug ;
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$send_addr = sockaddr_in($ICA_PORT, inet_aton($master_browser));
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if ( $broadcast_addr ) {
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print "using broadcast query\n"
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if $debug ;
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$query_message = $bcast_query_app;
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} else {
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print "using directed query\n"
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if $debug ;
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$query_message = $direct_query_app;
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}
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# Now we send the appropriate query string, to the master browser we've found.
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$buff = '';
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$this_test = 0 ;
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print "Querying master browser for published application list\n"
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if $debug ;
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while ( ++$this_test <= $TEST_COUNT && !$buff ) {
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print "Sending application query datagram. datagram number: ", $this_test, "\n"
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if $debug ;
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&pdump($query_message)
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if $debug ;
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$Udp->send($query_message, 0, $send_addr);
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if ( $select->can_read($Timeout) ) {
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$remote_host = $Udp->recv($buff, $BUFFER_SIZE, 0 );
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# $buff = substr($buff, 32) ;
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# Hope that ICA preamble is first 32 bytes
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}
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# Long application lists are delivered in multiple packets
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my $buff2 = '' ;
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while ( $long_list && $select->can_read($Timeout) ) {
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$remote_host = $Udp->recv($buff2, $BUFFER_SIZE, 0);
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$buff .= $buff2
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if $buff2 ;
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# $buff .= substr($buff2, 32) if $buff2 ;
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# Hope that ICA preamble is first 32 bytes
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}
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last if $buff ;
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sleep 1 ;
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}
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unless ( $buff ) {
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print "Failed. No response to application query datagram from ", $master_browser, ".\n" ;
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exit $ERRORS{CRITICAL} ;
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}
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# we got a response from a couple of retries of the app query
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($rport, $raddr) = sockaddr_in ( $remote_host );
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$rhost = gethostbyaddr ( $raddr, AF_INET );
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if ( $debug ) {
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print "$rhost:$rport responded to app query with: ", length($buff), " bytes\n";
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&pdump($buff) ;
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}
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my $app_list = $buff ;
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# delete nulls in unicode
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# but only if there is unicode (usually from
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# broadcast query)
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$app_list =~ s/(?:(\w| |-)\x00)/$1/g
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if $app_list =~ /(?:(?:(?:\w| |-)\x00){3,})/ ;
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# FIXME an application name is
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# 3 or more unicoded characters
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# FIXME locale
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# extract null terminated strings
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my (@clean_app_list, $clean_app_list) ;
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$clean_app_list = join(',', @clean_app_list = $app_list =~ m#([A-Za-z](?:\w| |-|[<5B><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>])+?(?=\x00))#g ) ;
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# patch for German umlauts et al from Herr Mike Gerber.
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# $clean_app_list = join(',', @clean_app_list = $app_list =~ m#([A-Z](?:\w| |-)+?(?=\x00))#g ) ;
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# FIXME everyones apps don't start with caps
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print qq(Received list of applications: "$clean_app_list".\n)
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if $debug ;
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if ( scalar @crit_pub_apps and my @missing = &simple_diff(\@clean_app_list, \@crit_pub_apps) ) {
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print qq(Failed. "@missing" not found in list of published applications),
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qq(" $clean_app_list" from master browser "$master_browser".\n) ;
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exit $ERRORS{CRITICAL} ;
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}
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if ( my @missing = &simple_diff(\@clean_app_list, \@warn_pub_apps) ) {
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print qq(Warning. "@missing" not found in list of published applications),
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qq(" $clean_app_list" from master browser "$master_browser".\n) ;
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exit $ERRORS{WARNING} ;
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}
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my @x = (@crit_pub_apps, @warn_pub_apps) ;
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my $blah = ( scalar(@x) == 1
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? 'the published application "' . join(',', @x) . '" is available'
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: 'the published applications "' . join(',', @x) . '" are available' ) ;
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print qq(Ok. Citrix master browser "$master_browser" reported that $blah.\n) ;
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exit $ERRORS{OK} ;
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# sleep $Timeout;
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# because otherwise we can get responses from
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# the WRONG servers. DOH
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close $Udp;
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sub print_usage () {
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print "Usage: $PROGNAME (-B <broadcast_address>| -C <citrix_server>..) -W <pub_app1,pub_app2..> -P <pub_app1,pub_app2,>\n";
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}
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sub print_help () {
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print_revision($PROGNAME,'$Revision: 1098 $ ');
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print "Copyright (c) 2002 Ed Rolison/Tom De Blende/S Hopcroft
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Perl Check Citrix plugin for Nagios.
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Returns OK if the Citrix master browser returns a 'published application' list that contain names specified by the -W or -P options
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The plugin works by
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If the -B option is specified, sending a broadcast helo to find the address of the Citrix master browser in the specified subnet.
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return critical if there is no reply;
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Else if the -C option is specified
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send a direct helo to the specified server until there is a response (containing the address of the Citrix master browser)
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Query the master browser (using a 'broadcast published applications query ' if -B) and compare the published applications returned
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to those specified by -W and -P options
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return Critical if the published applications specified by -P is not a subset of the query responses;
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return Warning if the published applications specified by -W is not a subset of the query responses;
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return OK
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";
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print_usage();
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print '
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-B, --broadcast_address=STRING
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The broadcast address that should contain Citrix master browser. This option takes precedence over -C.
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-C, --citrix_server:STRING
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Optional __name(s)__ of Citrix servers that could be the master browser (used when broadcast not possible).
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-L, --long_list
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Set this if you have heaps of published applications (ie more than will fit in _one_ UDP packet)
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-P, --crit_published_app=STRING
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Optional comma separated list of published application that must be in the response from the master browser.
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Check returns critical otherwise.
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-T, --packet-timeout:INTEGER
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Time to wait for UDP packets (default 1 sec).
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-W, --warn_published_app=STRING
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Optional comma separated list of published application that should be in the response from the master browser.
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Check returns warning otherwise.
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-v, --verbose
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Debugging output.
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-h, --help
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This stuff.
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';
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support();
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}
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sub version () {
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print_revision($PROGNAME,'$Revision: 1098 $ ');
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exit $ERRORS{'OK'};
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}
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sub help () {
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print_help();
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exit $ERRORS{'OK'};
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}
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sub simple_diff {
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my ( $a_list, $b_list) = @_ ;
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# simple set difference 'Recipe 4.7 Perl Cookbook', Christiansen and Torkington
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my (%seen, @missing) ;
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@seen{@$a_list} = () ;
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foreach my $item (@$b_list) {
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push @missing, $item
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unless exists $seen{$item} ;
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}
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@missing ;
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}
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