Koha/C4/Auth_with_cas.pm
2009-11-23 16:34:31 +01:00

128 lines
3.2 KiB
Perl

package C4::Auth_with_cas;
# Copyright 2009 BibLibre SARL
#
# This file is part of Koha.
#
# 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;
use C4::Debug;
use C4::Context;
use C4::Utils qw( :all );
use Authen::CAS::Client;
use CGI;
use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $debug);
BEGIN {
require Exporter;
$VERSION = 3.03; # set the version for version checking
$debug = $ENV{DEBUG};
@ISA = qw(Exporter);
@EXPORT = qw(checkpw_cas login_cas logout_cas login_cas_url);
}
my $context = C4::Context->new() or die 'C4::Context->new failed';
my $casserver = C4::Context->preference('casServerUrl');
# Logout from CAS
sub logout_cas {
my ($query) = @_;
my $cas = Authen::CAS::Client->new($casserver);
print $query->redirect($cas->logout_url(url => %ENV->{'SCRIPT_URI'}));
}
# Login to CAS
sub login_cas {
my ($query) = @_;
my $cas = Authen::CAS::Client->new($casserver);
print $query->redirect($cas->login_url(%ENV->{'SCRIPT_URI'}));
}
# Returns CAS login URL with callback to the requesting URL
sub login_cas_url {
my $cas = Authen::CAS::Client->new($casserver);
return $cas->login_url(%ENV->{'SCRIPT_URI'});
}
# Checks for password correctness
# In our case : is there a ticket, is it valid and does it match one of our users ?
sub checkpw_cas {
$debug and warn "checkpw_cas";
my ($dbh, $ticket, $query) = @_;
my $retnumber;
my $cas = Authen::CAS::Client->new($casserver);
# If we got a ticket
if ($ticket) {
$debug and warn "Got ticket : $ticket";
# We try to validate it
my $val = $cas->service_validate(%ENV->{'SCRIPT_URI'}, $ticket);
# If it's valid
if( $val->is_success() ) {
my $userid = $val->user();
$debug and warn "User CAS authenticated as: $userid";
# Does it match one of our users ?
my $sth = $dbh->prepare("select cardnumber from borrowers where userid=?");
$sth->execute($userid);
if ( $sth->rows ) {
$retnumber = $sth->fetchrow;
return (1, $retnumber, $userid);
}
my $sth = $dbh->prepare("select userid from borrowers where cardnumber=?");
$sth->execute($userid);
if ( $sth->rows ) {
$retnumber = $sth->fetchrow;
return (1, $retnumber, $userid);
}
# If we reach this point, then the user is a valid CAS user, but not a Koha user
$debug and warn "User $userid is not a valid Koha user";
} else {
$debug and warn "Invalid session ticket : $ticket";
return 0;
}
}
return 0;
}
1;
__END__
=head1 NAME
C4::Auth - Authenticates Koha users
=head1 SYNOPSIS
use C4::Auth_with_cas;
=cut
=head1 SEE ALSO
CGI(3)
Authen::CAS::Client
=cut