#!/usr/bin/perl
# This script lets the users change the passwords by themselves.
#
# (c) 2005 Universidad ORT Uruguay.
#
# This file is part of the extensions and enhacments made to koha by Universidad ORT Uruguay
#
# Koha 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.
#
# Koha 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
# Koha; if not, write to the Free Software Foundation, Inc., 59 Temple Place,
# Suite 330, Boston, MA  02111-1307 USA

use strict;
require Exporter;
use CGI;

use C4::Auth;         # checkauth, getborrowernumber.
use C4::Context;
use Digest::MD5 qw(md5_base64);
use C4::Circulation::Circ2;
use HTML::Template;
use C4::Interface::CGI::Output;

my $query = new CGI;
my $dbh = C4::Context->dbh;

my ($template, $borrowernumber, $cookie) 
    = get_template_and_user({template_name => "opac-passwd.tmpl",
			     query => $query,
			     type => "opac",
			     authnotrequired => 0,
			     flagsrequired => {borrow => 1},
			     debug => 1,
			     });

# get borrower information ....
my ($borr, $flags) = getpatroninformation(undef, $borrowernumber);
my $sth = $dbh->prepare("UPDATE borrowers SET password = ? WHERE borrowernumber=?");

if ( $query->param('Oldkey') && $query->param('Newkey') && $query->param('Confirm') ){
	if ( goodkey($dbh,$borrowernumber, $query->param('Oldkey')) ){
		if ( $query->param('Newkey') eq $query->param('Confirm') &&
			length($query->param('Confirm')) > 5 ){ # Record password
			my $clave = md5_base64($query->param('Newkey'));
			$sth->execute($clave,$borrowernumber);
			$template->param('password_updated' => '1');
			$template->param('borrowernumber' => $borrowernumber);
		}elsif ( $query->param('Newkey') ne $query->param('Confirm') ){
			$template->param('Ask_data' => '1');
			$template->param('Error_messages' => '1');
			$template->param('PassMismatch' => '1');
		}elsif (length($query->param('Confirm')) <= 5 ){
			$template->param('Ask_data' => '1');
			$template->param('Error_messages' => '1');
			$template->param('ShortPass' => '1');
		}else{
			$template->param('Error_messages' => '1');
		} 
	}else{
		$template->param('Ask_data' => '1');
		$template->param('Error_messages' => '1');
		$template->param('WrongPass' => '1');
	}
}else {
# Called Empty, Ask for data.
	$template->param('Ask_data' => '1');
}

$template->param(LibraryName => C4::Context->preference("LibraryName"),
);

output_html_with_http_headers $query, $cookie, $template->output;


sub goodkey {
my ($dbh, $borrowernumber, $key) = @_;

	my $sth=$dbh->prepare("SELECT password FROM borrowers WHERE borrowernumber=?");
	$sth->execute($borrowernumber);
	if ($sth->rows){
		my ($md5password) = $sth->fetchrow;
		if (md5_base64($key) eq $md5password) { return 1; } else { return 0; }
	}else{ return 0; }
}