#!/usr/bin/perl
#
# chkwww v0.1
# http://brink.st/config/files/perl/chkwww.pl
#
# chkwww does little more than showing you the webserver version
# of the remote server.
#
# Copyright (C) 2007 Remco B. Brink <remco@rc6.org>
#
# 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.
#
# The GNU General Public License is available at:
# http://www.gnu.org/copyleft/gpl.html

# Create a user agent object
use LWP::UserAgent;

$ua = LWP::UserAgent->new;
$ua->agent("chkwww/0.1 ");

# Create a request
my $server = $ARGV[0];

# Make sure we build a valid request
if ($server  =~ m/^http\:\/\//) {
   # http is passed on the commandline
} else {
   $realserver = "http://" . $server;
}

# Do a HEAD request
my $req = HTTP::Request->new(HEAD => $realserver);

# Pass request to the user agent and get a response back
my $res = $ua->request($req);

# Check the outcome of the response
if ($res->is_success) {
  # Output results to user
  print $server . ": " . $res->header('server') . "\n";
} else {
  # Something went wonky
  print $res->status_line, "\n";
}