1 files changed, 134 insertions, 0 deletions
diff --git a/plugins/CasAuthentication/CasAuthenticationPlugin.php b/plugins/CasAuthentication/CasAuthenticationPlugin.php
new file mode 100644
index 000000000..428aafb02
--- /dev/null
+++ b/plugins/CasAuthentication/CasAuthenticationPlugin.php
@@ -0,0 +1,134 @@
+<?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 Craig Andrews http://candrews.integralblue.com
+ * @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 $path = '';
+
+    function checkPassword($username, $password)
+    {
+        global $casTempPassword;
+        return ($casTempPassword == $password);
+    }
+
+    function onAutoload($cls)
+    {
+        switch ($cls)
+        {
+         case 'phpCAS':
+            require_once(INSTALLDIR.'/plugins/CasAuthentication/extlib/CAS.php');
+            return false;
+         case 'CasloginAction':
+            require_once(INSTALLDIR.'/plugins/CasAuthentication/' . strtolower(mb_substr($cls, 0, -6)) . '.php');
+            return false;
+         default:
+            return parent::onAutoload($cls);
+        }
+    }
+
+    function onStartInitializeRouter($m)
+    {
+        $m->connect('main/cas', array('action' => 'caslogin'));
+        return true;
+    }
+
+    function onEndLoginGroupNav(&$action)
+    {
+        $action_name = $action->trimmed('action');
+
+        $action->menuItem(common_local_url('caslogin'),
+                          _m('CAS'),
+                          _m('Login or register with CAS'),
+                          $action_name === 'caslogin');
+
+        return true;
+    }
+
+    function onEndShowPageNotice($action)
+    {
+        $name = $action->trimmed('action');
+
+        switch ($name)
+        {
+         case 'login':
+            $instr = '(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)){
+            throw new Exception("must specify a server");
+        }
+        if(!isset($this->port)){
+            throw new Exception("must specify a port");
+        }
+        if(!isset($this->path)){
+            throw new Exception("must specify a path");
+        }
+        //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;
+    }
+}