gnu-social/plugins/CasAuthentication/CasAuthenticationPlugin.php

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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Plugin to enable Single Sign On via CAS (Central Authentication Service)
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
// We bundle the phpCAS library...
set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/CAS');
class CasAuthenticationPlugin extends AuthenticationPlugin
{
public $server;
public $port = 443;
public $path = '';
public $takeOverLogin = false;
function checkPassword($username, $password)
{
global $casTempPassword;
return ($casTempPassword == $password);
}
function onAutoload($cls)
{
switch ($cls)
{
case 'phpCAS':
require_once(INSTALLDIR.'/plugins/CasAuthentication/extlib/CAS.php');
return false;
}
// if it's not our exception, try standard places
return parent::onAutoload($cls);
}
function onArgsInitialize(&$args)
{
if($this->takeOverLogin && $args['action'] == 'login')
{
$args['action'] = 'caslogin';
}
}
function onStartInitializeRouter($m)
{
$m->connect('main/cas', array('action' => 'caslogin'));
return true;
}
function onEndLoginGroupNav($action)
{
$action_name = $action->trimmed('action');
$action->menuItem(common_local_url('caslogin'),
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// TRANS: Menu item. CAS is Central Authentication Service.
_m('CAS'),
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// TRANS: Tooltip for menu item. CAS is Central Authentication Service.
_m('Login or register with CAS.'),
$action_name === 'caslogin');
return true;
}
function onEndShowPageNotice($action)
{
$name = $action->trimmed('action');
switch ($name)
{
case 'login':
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// TRANS: Invitation to users with a CAS account to log in using the service.
// TRANS: "[CAS login]" is a link description. (%%action.caslogin%%) is the URL.
// TRANS: These two elements may not be separated.
$instr = _m('(Have an account with CAS? ' .
'Try our [CAS login](%%action.caslogin%%)!)');
break;
default:
return true;
}
$output = common_markup_to_html($instr);
$action->raw($output);
return true;
}
function onLoginAction($action, &$login)
{
switch ($action)
{
case 'caslogin':
$login = true;
return false;
default:
return true;
}
}
function onInitializePlugin(){
parent::onInitializePlugin();
if(!isset($this->server)){
// TRANS: Exception thrown when the CAS Authentication plugin has been configured incorrectly.
throw new Exception(_m("Specifying a server is required."));
}
if(!isset($this->port)){
// TRANS: Exception thrown when the CAS Authentication plugin has been configured incorrectly.
throw new Exception(_m("Specifying a port is required."));
}
if(!isset($this->path)){
// TRANS: Exception thrown when the CAS Authentication plugin has been configured incorrectly.
throw new Exception(_m("Specifying a path is required."));
}
//These values need to be accessible to a action object
//I can't think of any other way than global variables
//to allow the action instance to be able to see values :-(
global $casSettings;
$casSettings = array();
$casSettings['server']=$this->server;
$casSettings['port']=$this->port;
$casSettings['path']=$this->path;
$casSettings['takeOverLogin']=$this->takeOverLogin;
}
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'CAS Authentication',
'version' => STATUSNET_VERSION,
'author' => 'Craig Andrews',
'homepage' => 'http://status.net/wiki/Plugin:CasAuthentication',
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// TRANS: Plugin description. CAS is Central Authentication Service.
'rawdescription' => _m('The CAS Authentication plugin allows for StatusNet to handle authentication through CAS (Central Authentication Service).'));
return true;
}
}