3 * StatusNet - the distributed open-source microblogging tool
4 * Copyright (C) 2008-2010, StatusNet, Inc.
8 * This program is free software: you can redistribute it and/or modify
9 * it under the terms of the GNU Affero General Public License as published by
10 * the Free Software Foundation, either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU Affero General Public License for more details.
18 * You should have received a copy of the GNU Affero General Public License
19 * along with this program. If not, see <http://www.gnu.org/licenses/>.
25 * @author Evan Prodromou <evan@status.net>
26 * @copyright 2008-2010 StatusNet, Inc.
27 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
28 * @link http://status.net/
31 if (!defined('STATUSNET')) {
38 * Subscribing to a profile. Does not work for OMB 0.1 remote subscriptions,
39 * but may work for other remote subscription protocols, like OStatus.
43 * - subscribeto: a profile ID
44 * - token: session token to prevent CSRF attacks
45 * - ajax: boolean; whether to return Ajax or full-browser results
47 * Only works if the current user is logged in.
51 * @author Evan Prodromou <evan@status.net>
52 * @copyright 2008-2010 StatusNet, Inc.
53 * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
54 * @link http://status.net/
57 class SubscribeAction extends Action
63 * Check pre-requisites and instantiate attributes
65 * @param Array $args array of arguments (URL, GET, POST)
67 * @return boolean success flag
70 function prepare($args)
72 parent::prepare($args);
74 // Only allow POST requests
76 if ($_SERVER['REQUEST_METHOD'] != 'POST') {
77 $this->clientError(_('This action only accepts POST requests.'));
83 $token = $this->trimmed('token');
85 if (!$token || $token != common_session_token()) {
86 $this->clientError(_('There was a problem with your session token.'.
87 ' Try again, please.'));
91 // Only for logged-in users
93 $this->user = common_current_user();
95 if (empty($this->user)) {
96 $this->clientError(_('Not logged in.'));
100 // Profile to subscribe to
102 $other_id = $this->arg('subscribeto');
104 $this->other = Profile::staticGet('id', $other_id);
106 if (empty($this->other)) {
107 $this->clientError(_('No such profile.'));
111 // OMB 0.1 doesn't have a mechanism for local-server-
112 // originated subscription.
114 $omb01 = Remote_profile::staticGet('id', $other_id);
116 if (!empty($omb01)) {
117 $this->clientError(_('You cannot subscribe to an OMB 0.1'.
118 ' remote profile with this action.'));
128 * Does the subscription and returns results.
130 * @param Array $args unused.
135 function handle($args)
137 // Throws exception on error
139 Subscription::start($this->user->getProfile(),
142 if ($this->boolean('ajax')) {
143 $this->startHTML('text/xml;charset=utf-8');
144 $this->elementStart('head');
145 $this->element('title', null, _('Subscribed'));
146 $this->elementEnd('head');
147 $this->elementStart('body');
148 $unsubscribe = new UnsubscribeForm($this, $this->other);
149 $unsubscribe->show();
150 $this->elementEnd('body');
151 $this->elementEnd('html');
153 $url = common_local_url('subscriptions',
154 array('nickname' => $this->user->nickname));
155 common_redirect($url, 303);