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#!/usr/bin/perl -w |
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# |
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# try to connect to a particular |
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# port on a bunch of hosts. For use with "mon". |
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# |
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# Options are |
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# -p <port-num> |
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# -t <connect-timeout-in-seconds> (default 15) |
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# -s <string to send upon connecting to provoke some output> |
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# -e <Perl regexp to expect in response> |
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# -f <Perl regexp to expect in response immidiatly after sent string> |
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# -q <string to send before closing after parsing response> |
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# -d <string to use as line delimiter for regexp matching> |
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|
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# without /-s/-e/-q/, just checks that the socket can be opened |
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# and closed. |
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|
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# cheap transformations done on send/quit/delim strings - \r and \n are |
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# converted to CR and LF. \\ is not supported - no escape possible. |
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|
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# sample usage: |
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# |
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# smtp: tcpch.monitor -p 25 -e '^220\b' -q 'QUIT\r\n' |
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# web: tcpch.monitor -p 80 -s 'GET / HTTP/1.0\r\n' -e '^HTTP.*200 OK' |
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# saplpr: tcpch.monitor -p 515 -s '4 x 1\n' -f 'This is SAPLPD' |
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|
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|
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# |
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# Jim Trocki, trockij@transmeta.com |
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# updated August 2000 by Ed Ravin <eravin@panix.com> for send/expect/quit |
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# |
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# $Id: tcpch.monitor,v 1.4 2001/09/22 04:45:25 root Exp root $ |
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# |
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# Copyright (C) 1998, Jim Trocki |
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# |
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# This program is free software; you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 2 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program; if not, write to the Free Software |
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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# |
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use Getopt::Std; |
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use Socket; |
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|
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my %opt; |
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getopts ("d:p:t:s:e:f:q:", \%opt); |
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$USAGE= "Usage: tcpch.monitor -p port [-t timeout] [-s sendstr] [-e regexp] [-q quitstr] [-d line-delim]\n"; |
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|
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my $PORT = $opt{"p"} || undef; |
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my $TIMEOUT = $opt{"t"} || 15; |
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|
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my $SEND= $opt{"s"} || undef; |
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my $EXPECT= $opt{"e"} || undef; |
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my $FEXPECT= $opt{"f"} || undef; |
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my $QUITSTR=$opt{"q"} || undef; |
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my $DELIM= $opt{"d"} || "\n"; |
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if ($DELIM) |
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{ |
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$DELIM=~ s/\\n/\n/g; |
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$DELIM=~ s/\\r/\r/g; |
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} |
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|
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my @failures = (); |
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my @detail = (); |
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|
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my $ALARM = 0; |
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|
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sub checkbuf # buffer, regexp |
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{ |
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my ($buffer, $regexp)= @_; |
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|
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return $buffer =~ /$regexp/ if ($DELIM eq ''); |
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|
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my @lines= split($DELIM, $buffer); |
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|
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foreach my $line (@lines) |
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{ |
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if ($line =~ /$regexp/) |
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{ |
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return 1; |
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} |
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} |
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return 0; |
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} |
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|
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die $USAGE unless (@ARGV > 0); |
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die "$0: missing port number\n" unless defined $PORT; |
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|
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foreach my $host (@ARGV) { |
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my $pro = getprotobyname ('tcp'); |
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|
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if (!defined $pro) { |
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die "(local err) could not getprotobyname\n"; |
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} |
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|
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if (!defined socket (S, PF_INET, SOCK_STREAM, $pro)) { |
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die "(local err) could not create socket: $!\n"; |
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} |
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|
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my $a = inet_aton ($host); |
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if (!defined $a) { |
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push @failures, $host; |
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push @detail, "(local err) $host could not inet_aton"; |
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close (S); |
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next; |
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} |
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|
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my $sin = sockaddr_in ($PORT, $a); |
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if (!defined $sin) { |
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push @failures, $host; |
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push @detail, "(local err) $host could not sockaddr_in"; |
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close (S); |
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next; |
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} |
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|
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my $r; |
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|
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eval { |
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local $SIG{"ALRM"} = sub { die "alarm\n" }; |
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|
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alarm $TIMEOUT; |
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|
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$r = connect (S, $sin); |
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|
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alarm 0; |
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}; |
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|
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if ($@) { |
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push @failures, $host; |
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|
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if ($@ eq "alarm\n") { |
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push @detail, "$host timeout on connect"; |
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} else { |
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push @detail, "$host interrupted syscall on connect: $!"; |
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} |
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|
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close (S); |
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next; |
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} |
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|
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if (!defined $r) { |
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push @failures, $host; |
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push @detail, "$host: could not connect: $!"; |
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close (S); |
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next; |
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} |
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|
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select S; $|= 1; select STDOUT; |
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|
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if (defined($SEND)) |
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{ |
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my $rc= undef; |
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|
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$SEND=~ s/\\n/\n/g; |
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$SEND=~ s/\\r/\r/g; |
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eval { |
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local $SIG{"ALRM"} = sub { die "alarm\n" }; |
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|
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alarm $TIMEOUT; |
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$rc= send S, $SEND, 0; |
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if ($FEXPECT) { |
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recv S, $rxdata, 1024, 0; |
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} |
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alarm 0; |
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}; |
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if ($@) { |
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push @failures, $host; |
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|
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if ($@ eq "alarm\n") { |
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push @detail, "$host timeout on write"; |
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} else { |
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push @detail, "$host interrupted syscall on write: $!"; |
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} |
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} |
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|
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if (! $rc) |
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{ |
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push @failures, $host; |
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push @detail, "$host: write failed: $!"; |
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close (S); |
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next; |
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} |
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} |
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|
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if (defined($FEXPECT) && ! checkbuf($rxdata, $FEXPECT)) |
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{ |
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push @failures, $host; |
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push @detail, "$host: did not recv expected response"; |
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close (S); |
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next; |
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} |
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|
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if (defined($EXPECT)) |
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{ |
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# read and match |
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|
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my $rc= undef; |
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my $alldata= ""; |
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|
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eval { |
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local $SIG{"ALRM"} = sub { die "alarm\n" }; |
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|
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alarm $TIMEOUT; |
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|
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$rc= recv S, $rxdata, 1024, 0; |
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$alldata= $alldata . $rxdata; |
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|
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while ( !checkbuf($alldata, $EXPECT)) |
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{ |
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$rc= recv S, $rxdata, 1024, 0; |
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$alldata= $alldata . $rxdata; |
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} |
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alarm 0; |
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}; |
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if ($@) { |
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push @failures, $host; |
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|
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if ($@ eq "alarm\n") { |
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push @detail, "$host timeout on read"; |
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} else { |
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push @detail, "$host interrupted syscall on read: $!"; |
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} |
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} |
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if ($rc) |
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{ |
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push @failures, $host; |
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push @detail, "$host: recv failed : $!"; |
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close (S); |
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next; |
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} |
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|
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if (! checkbuf($alldata, $EXPECT)) |
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{ |
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push @failures, $host; |
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push @detail, "$host: did not recv expected response"; |
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close (S); |
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next; |
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} |
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} |
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|
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if (defined($QUITSTR)) |
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{ |
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my $rc= undef; |
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|
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$QUITSTR=~ s/\\n/\n/g; |
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$QUITSTR=~ s/\\r/\r/g; |
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|
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eval { |
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local $SIG{"ALRM"} = sub { die "alarm\n" }; |
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|
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alarm $TIMEOUT; |
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$rc= send S, $QUITSTR, 0; |
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alarm 0; |
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}; |
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if ($@) { |
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push @failures, $host; |
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|
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if ($@ eq "alarm\n") { |
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push @detail, "$host timeout writing quitstr"; |
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} else { |
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push @detail, "$host interrupted syscall writing quitstr: $!"; |
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} |
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} |
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|
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if (! $rc) |
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{ |
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push @failures, $host; |
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push @detail, "$host: quit write failed: $!"; |
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close (S); |
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next; |
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} |
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} |
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|
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if (!defined close (S)) { |
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push @failures, $host; |
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push @detail, "$host: could not close socket: $!"; |
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next; |
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} |
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} |
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|
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if (@failures == 0) { |
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exit 0; |
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} |
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|
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print "@failures\n"; |
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print "\n", join ("\n", @detail), "\n"; |
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|
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exit 1; |