NAME

       AuthCAS - Client library for CAS 2.0 authentication server

VERSION

       Version 1.5

DESCRIPTION

       AuthCAS aims at providing a Perl API to Yale's Central Authentication System (CAS). Only a
       basic Perl library is provided with CAS whereas AuthCAS is a full object-oriented library.
       =head1 PREREQUISITES

       This script requires IO::Socket::SSL and LWP::UserAgent

       any

       Network

SYNOPSIS

         A simple example with a direct CAS authentication

         use AuthCAS;
         my $cas = new AuthCAS(casUrl => 'https://cas.myserver,
                           CAFile => '/etc/httpd/conf/ssl.crt/ca-bundle.crt',
                           );

         my $login_url = $cas->getServerLoginURL('http://myserver/app.cgi');

         ## The user should be redirected to the $login_url
         ## When coming back from the CAS server a ticket is provided in the QUERY_STRING

         ## $ST should contain the receaved Service Ticket
         my $user = $cas->validateST('http://myserver/app.cgi', $ST);

         printf "User authenticated as %s\n", $user;

         In the following example a proxy is requesting a Proxy Ticket for the target application

         $cas->proxyMode(pgtFile => '/tmp/pgt.txt',
                         pgtCallbackUrl => 'https://myserver/proxy.cgi?callback=1
                         );

         ## Same as before but the URL is the proxy URL
         my $login_url = $cas->getServerLoginURL('http://myserver/proxy.cgi');

         ## Like in the previous example we should receave a $ST

         my $user = $cas->validateST('http://myserver/proxy.cgi', $ST);

         ## Process errors
         printf STDERR "Error: %s\n", &AuthCAS::get_errors() unless (defined $user);

         ## Now we request a Proxy Ticket for the target application
         my $PT = $cas->retrievePT('http://myserver/app.cgi');

         ## This piece of code is executed by the target application
         ## It received a Proxy Ticket from the proxy
         my ($user, @proxies) = $cas->validatePT('http://myserver/app.cgi', $PT);

         printf "User authenticated as %s via %s proxies\n", $user, join(',',@proxies);

DESCRIPTION

       CAS is Yale University's web authentication system, heavily inspired by Kerberos.  Release
       2.0 of CAS provides "proxied credential" feature that allows authentication tickets to be
       carried by intermediate applications (Portals for instance), they are called proxy.

       This AuthCAS Perl module provides required subroutines to validate and retrieve CAS
       tickets.

SEE ALSO

       Yale Central Authentication Service (http://www.yale.edu/tp/auth/)
        phpCAS (http://esup-phpcas.sourceforge.net/)

COPYRIGHT

       Copyright (C) 2003 Comite Reseau des Universites (http://www.cru.fr). All rights reserved.

       This library is free software; you can redistribute it and/or modify it under the same
       terms as Perl itself.

AUTHORS

       Olivier Salaun