Merge remote branch 'gitorious/0.9.x' into 0.9.x

[quix0rs-gnu-social.git] / actions / subscribe.php

diff --git a/actions/subscribe.php b/actions/subscribe.php
index 856586f87a79bc5532ddd550f0811d1d8b649b89..b1243f393333fdea7245bead2c7c1bda9738e982 100644 (file)
--- a/actions/subscribe.php
+++ b/actions/subscribe.php
@@ -1,7 +1,9 @@
 <?php
-/*
- * Laconica - a distributed open-source microblogging tool
- * Copyright (C) 2008, Controlez-Vous, Inc.
+/**
+ * StatusNet - the distributed open-source microblogging tool
+ * Copyright (C) 2008-2010, StatusNet, Inc.
+ *
+ * Subscription action.
  *
  * 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
@@ -15,60 +17,142 @@
  *
  * 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/>.
+ *
+ * PHP version 5
+ *
+ * @category  Action
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @copyright 2008-2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link      http://status.net/
+ */
+
+if (!defined('STATUSNET')) {
+    exit(1);
+}
+
+/**
+ * Subscription action
+ *
+ * Subscribing to a profile. Does not work for OMB 0.1 remote subscriptions,
+ * but may work for other remote subscription protocols, like OStatus.
+ *
+ * Takes parameters:
+ *
+ *    - subscribeto: a profile ID
+ *    - token: session token to prevent CSRF attacks
+ *    - ajax: boolean; whether to return Ajax or full-browser results
+ *
+ * Only works if the current user is logged in.
+ *
+ * @category  Action
+ * @package   StatusNet
+ * @author    Evan Prodromou <evan@status.net>
+ * @copyright 2008-2010 StatusNet, Inc.
+ * @license   http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
+ * @link      http://status.net/
  */
 
-if (!defined('LACONICA')) { exit(1); }
-
-class SubscribeAction extends Action {
-       
-       function handle($args) {
-               parent::handle($args);
-
-               if (!common_logged_in()) {
-                       common_user_error(_('Not logged in.'));
-                       return;
-               }
-
-               $user = common_current_user();
-
-               if ($_SERVER['REQUEST_METHOD'] != 'POST') {
-                       common_redirect(common_local_url('subscriptions', array('nickname' => $user->nickname)));
-                       return;
-               }
-
-               # CSRF protection
-
-               $token = $this->trimmed('token');
-               
-               if (!$token || $token != common_session_token()) {
-                       $this->client_error(_('There was a problem with your session token. Try again, please.'));
-                       return;
-               }
-
-               $other_nickname = $this->arg('subscribeto');
-
-               $result=subs_subscribe_user($user, $other_nickname);
-               
-               if($result != true) {
-                       common_user_error($result);
-                       return;
-               }
-
-               $cur = common_current_user();
-               $profile = Profile::staticGet('nickname', $other_nickname);
-               if ($this->boolean('ajax')) {
-                       common_start_html('text/xml');
-                       common_element_start('head');
-                       common_element('title', null, _('Subscribed'));
-                       common_element_end('head');
-                       common_element_start('body');
-                       common_unsubscribe_form($profile);
-                       common_profile_new_message_nudge($cur, $profile);
-                       common_element_end('body');
-                       common_element_end('html');
-               } else {
-                   common_redirect(common_local_url('subscriptions', array('nickname' =>
-                                                                                                                               $user->nickname)));
+class SubscribeAction extends Action
+{
+    var $user;
+    var $other;
+
+    /**
+     * Check pre-requisites and instantiate attributes
+     *
+     * @param Array $args array of arguments (URL, GET, POST)
+     *
+     * @return boolean success flag
+     */
+
+    function prepare($args)
+    {
+        parent::prepare($args);
+
+        // Only allow POST requests
+
+        if ($_SERVER['REQUEST_METHOD'] != 'POST') {
+            $this->clientError(_('This action only accepts POST requests.'));
+            return false;
+        }
+
+        // CSRF protection
+
+        $token = $this->trimmed('token');
+
+        if (!$token || $token != common_session_token()) {
+            $this->clientError(_('There was a problem with your session token.'.
+                                 ' Try again, please.'));
+            return false;
+        }
+
+        // Only for logged-in users
+
+        $this->user = common_current_user();
+
+        if (empty($this->user)) {
+            $this->clientError(_('Not logged in.'));
+            return false;
+        }
+
+        // Profile to subscribe to
+
+        $other_id = $this->arg('subscribeto');
+
+        $this->other = Profile::staticGet('id', $other_id);
+
+        if (empty($this->other)) {
+            $this->clientError(_('No such profile.'));
+            return false;
+        }
+
+        // OMB 0.1 doesn't have a mechanism for local-server-
+        // originated subscription.
+
+        $omb01 = Remote_profile::staticGet('id', $other_id);
+
+        if (!empty($omb01)) {
+            $this->clientError(_('You cannot subscribe to an OMB 0.1'.
+                                 ' remote profile with this action.'));
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Handle request
+     *
+     * Does the subscription and returns results.
+     *
+     * @param Array $args unused.
+     *
+     * @return void
+     */
+
+    function handle($args)
+    {
+        // Throws exception on error
+
+        Subscription::start($this->user->getProfile(),
+                            $this->other);
+
+        if ($this->boolean('ajax')) {
+            $this->startHTML('text/xml;charset=utf-8');
+            $this->elementStart('head');
+            $this->element('title', null, _('Subscribed'));
+            $this->elementEnd('head');
+            $this->elementStart('body');
+            $unsubscribe = new UnsubscribeForm($this, $this->other);
+            $unsubscribe->show();
+            $this->elementEnd('body');
+            $this->elementEnd('html');
+        } else {
+            $url = common_local_url('subscriptions',
+                                    array('nickname' => $this->user->nickname));
+            common_redirect($url, 303);
         }
-       }
+    }
 }