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+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Superclass for plugins that do authorization
+ *
+ * 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>
+ * @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);
+}
+
+/**
+ * Superclass for plugins that do authorization
+ *
+ * @category Plugin
+ * @package StatusNet
+ * @author Craig Andrews <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/
+ */
+
+abstract class AuthorizationPlugin extends Plugin
+{
+ //is this plugin authoritative for authorization?
+ public $authoritative = false;
+
+ //------------Auth plugin should implement some (or all) of these methods------------\\
+
+ /**
+ * Is a user allowed to log in?
+ * @param user
+ * @return boolean true if the user is allowed to login, false if explicitly not allowed to login, null if we don't explicitly allow or deny login
+ */
+ function loginAllowed($user) {
+ return null;
+ }
+
+ /**
+ * Does a profile grant the user a named role?
+ * @param profile
+ * @return boolean true if the profile has the role, false if not
+ */
+ function hasRole($profile, $name) {
+ return false;
+ }
+
+ //------------Below are the methods that connect StatusNet to the implementing Auth plugin------------\\
+ function onInitializePlugin(){
+
+ }
+
+ function onStartSetUser(&$user) {
+ $loginAllowed = $this->loginAllowed($user);
+ if($loginAllowed === true){
+ if($this->authoritative) {
+ return false;
+ }else{
+ return;
+ }
+ }else if($loginAllowed === false){
+ $user = null;
+ return false;
+ }else{
+ if($this->authoritative) {
+ $user = null;
+ return false;
+ }else{
+ return;
+ }
+ }
+ }
+
+ function onStartSetApiUser(&$user) {
+ return onStartSetUser(&$user);
+ }
+
+ function onStartHasRole($profile, $name, &$has_role) {
+ if($this->hasRole($profile, $name)){
+ $has_role = true;
+ return false;
+ }else{
+ if($this->authoritative) {
+ $has_role = false;
+ return false;
+ }else{
+ return;
+ }
+ }
+ }
+}
+