#!/usr/bin/perl -w
#
# Test CAS (fed's)
#
# By Igor Gubenko (igubenko@Princeton.EDU), 09/25/2013
#

use strict;
use lib qw(/usr/local/perl/lib/perl5/x86_64-linux-thread-multi /usr/local/perl/lib/perl5);
use WWW::Mechanize;
#use Net::SSL; # From Crypt-SSLeay
#use LWP::Protocol::https;
#BEGIN {
#	$Net::HTTPS::SSL_SOCKET_CLASS = "Net::SSL"; # Force use of Net::SSL
#	$ENV{PERL_NET_HTTPS_SSL_SOCKET_CLASS}="IO::Socket::SSL";
#}
#$ENV{PERL_LWP_SSL_VERIFY_HOSTNAME} = 0;
#$ENV{HTTPS_VERSION} = 3;

sub usage;

my $progname = $0;

usage unless @ARGV == 3;

my $mech = WWW::Mechanize->new (agent => 'Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0', stack_depth => '1', noproxy => '1', quiet => '1', onerror => undef, onwarn => undef, timeout => '20') or die ("Unable to instantiate WWW::Mechanize!\n");
#$mech->proxy (['http', 'https'], 'http://malka.princeton.edu:8888');
#$mech -> add_handler("request_send",  sub { shift->dump; return });
#$mech -> add_handler("response_done", sub { shift->dump; return });

my ($URL, $user, $pass) = @ARGV;

$mech->get ($URL);

unless ($mech -> success() && $mech->title() =~ m#Princeton University Authentication Service#) {
	print "Failed to fetch \"$URL\". Current URL: " . $mech->uri->as_string . ". Answer: " . $mech->status() . ";\n";
	exit 2;
}

#my @tmp = $mech->find_all_inputs;
#foreach (@tmp) { print $_->type, "###", $_->name, "\n"; }
#exit 1;
# Login
$mech->submit_form (
	with_fields      => {
		username	=> $user,
		password	=> $pass,
	},
	image		=> '',
);

unless ($mech -> success() && $mech->title() =~ m#Princeton University Authentication Service - Success#) {
	print "Failed to login to CAS. Current URL: ". $mech->uri->as_string . ". Answer: " . $mech->status() . "; \n";
	exit 2;
}

$mech->follow_link (text => 'logout');

unless ($mech -> success() && $mech->response()->decoded_content =~ m#You have been logged out#) {
	print "Failed to sign out of CAS. Current URL: ". $mech->uri->as_string . ". Answer: " . $mech->status() . "; " . ((defined $mech->title() ? $mech->title() : "" )) . "\n";
	exit 1;
}

#print "\n#########################\n\n\n", $mech -> response() -> decoded_content, "\n";

print "Successfully accessed CAS, logged in and logged out\n";

exit 0;

sub usage {
	print "Usage: $progname <URL> <login> <password>\n";
	exit 2;
}