#!/usr/bin/perl## POP3 authenticator for Squid# Copyright (C) 2006 Henrik Nordstrom <henrik@henriknordstrom.net>## 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, USA.# # Change log:#   2006-12-10	henrik	Initial revision#use Net::POP3;$|=1;if ( @ARGV != 1 ) {    print STDERR "Usage: $0 popserver\n";    exit 1}$server = shift @ARGV;while(<>) {    my ($username, $password) = split(/\s+/);    $username =~ s/%([0-9a-f][0-9a-f])/pack("H2",$1)/gie;    $password =~ s/%([0-9a-f][0-9a-f])/pack("H2",$1)/gie;    $pop = Net::POP3->new($server);    if (!$pop) {	print "ERR Server not responding\n";	next;    }    # Here apop could be used instead for MD5 support    if ($pop->login($username, $password)) {	print "OK\n";    } else {	print "ERR\n";    }    $pop->quit;    undef $pop;}