attached is a newer ftp.monitor which has your fixes and shows more detail
of the conversation with each host.
let me know how it is.
#!/usr/bin/perl
#
# Use try to connect to a FTP server, and
# wait for the right output.
#
# For use with "mon".
#
# Arguments are "-p port -t timeout host [host...]"
#
# Adapted from "http.monitor" by
# Jim Trocki
#
# http.monitor originally written by
#
# Jon Meek
# American Cyanamid Company
# Princeton, NJ
#
# $Id: ftp.monitor 1.5 Mon, 17 Mar 2003 14:01:10 -0500 trockij $
#
# Copyright (C) 1998, Jim Trocki
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
use Getopt::Std;
use English;
use Data::Dumper;
getopts ("p:t:");
$PORT = $opt_p || 21;
$TIMEOUT = $opt_t || 30;
my %good;
my %bad;
#
# collect the status on all the hosts
#
foreach my $host (@ARGV) {
my $result = ftpGET ($host, $PORT);
if (!$result->{"ok"}) {
$bad{$host} = $result;
} else {
$good{$host} = $result;
}
}
#
# summary line
#
if (keys %bad == 0)
{
print "\n";
}
else
{
print join (" ", sort keys %bad), "\n";
}
#
# detail
#
foreach my $host (keys %bad) {
print "$host failed with error " . $bad{$host}->{"error"}, "\n";
print "detail for $host\n";
print
"==============================================================================\n";
if ($bad{$host}->{"detail"} ne "")
{
print $bad{$host}->{"detail"};
}
else
{
print "no detail\n";
}
print "\n";
}
print "\n";
foreach my $host (keys %good)
{
print "$host succeeded\n";
print "detail for $host\n";
print
"==============================================================================\n";
if ($good{$host}->{"detail"} ne "")
{
print $good{$host}->{"detail"};
}
else
{
print "no detail\n";
}
print "\n";
}
exit 1;
sub ftpGET {
use Socket;
use Sys::Hostname;
my($Server, $Port) = @_;
my($ok);
my $result = {
"ok" => 0,
"error" => undef,
"detail" => undef,
};
###############################################################
eval {
local $SIG{ALRM} = sub { die "Timeout Alarm" };
alarm $TIMEOUT;
my $err = &OpenSocket($Server, $Port); # Open a connection to the server
if ($err ne "") { # Failure to open the socket
$result = {
"ok" => 0,
"error" => $err,
"detail" => undef,
};
return undef;
}
while ($in = <S>) {
$result->{"detail"} .= " < $in";
if ($in =~ /^220 /) {
$result->{"ok"} = 1;
last;
}
}
if (!$result->{"ok"}) {
alarm 0;
$result->{"ok"} = 0;
$result->{"error"} = "Connection refused";
close(S);
return undef;
}
print S "quit\r\n";
$result->{"detail"} .= " > quit\n";
$in = <S>;
$result->{"detail"} .= " < $in";
if ($in !~ /^221 /) {
alarm 0;
$result->{"ok"} = 0;
$result->{"error"} = "FTP server error after quit";
close(S);
return undef;
}
close(S);
alarm 0; # Cancel the alarm
};
#
# catch timeout
#
if ($EVAL_ERROR and ($EVAL_ERROR =~ /^Timeout Alarm/)) {
$result->{"ok"} = 0;
$result->{"error"} = "timeout";
}
return $result;
}
#
# Make a Berkeley socket connection between this program and a TCP port
# on another (or this) host. Port can be a number or a named service
#
# returns "" on success, or an error string on failure
#
sub OpenSocket {
my ($host, $port) = @_;
my $proto = (getprotobyname('tcp'))[2];
return ("could not get protocol") if (!defined $proto);
my $conn_port;
if ($port =~ /^\d+$/) {
$conn_port = $port;
} else {
$conn_port = (getservbyname($port, 'tcp'))[2];
return ("could not getservbyname for $port")
if (!defined $conn_port);
}
my $host_addr = (gethostbyname($host))[4];
return ("gethostbyname failure")
if (!defined $host_addr);
my $that = sockaddr_in ($conn_port, $host_addr);
if (!socket (S, &PF_INET, &SOCK_STREAM, $proto)) {
return ("socket: $!");
}
if (!connect (S, $that)) {
return ("connect: $!");
}
select(S); $| = 1; select(STDOUT);
"";
}