gnu-social/actions/unsubscribe.php

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<?php
/**
* Unsubscribe handler
*
* PHP version 5
*
* @category Action
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @author Robin Millette <millette@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
*
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* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* 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/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) {
exit(1);
}
/**
* Unsubscribe handler
*
* @category Action
* @package StatusNet
* @author Evan Prodromou <evan@status.net>
* @author Robin Millette <millette@status.net>
* @license http://www.fsf.org/licensing/licenses/agpl.html AGPLv3
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* @link http://status.net/
*/
class UnsubscribeAction extends Action
{
function handle($args)
{
parent::handle($args);
if (!common_logged_in()) {
// TRANS: Error message displayed when trying to perform an action that requires a logged in user.
$this->clientError(_('Not logged in.'));
return;
}
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
common_redirect(common_local_url('subscriptions',
array('nickname' => $this->scoped->nickname)));
return;
}
/* Use a session token for CSRF protection. */
$token = $this->trimmed('token');
if (!$token || $token != common_session_token()) {
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// TRANS: Client error displayed when the session token does not match or is not given.
$this->clientError(_('There was a problem with your session token. ' .
'Try again, please.'));
return;
}
$other_id = $this->arg('unsubscribeto');
if (!$other_id) {
// TRANS: Client error displayed when trying to unsubscribe without providing a profile ID.
$this->clientError(_('No profile ID in request.'));
return;
}
$other = Profile::getKV('id', $other_id);
if (!($other instanceof Profile)) {
// TRANS: Client error displayed when trying to unsubscribe while providing a non-existing profile ID.
$this->clientError(_('No profile with that ID.'));
return;
}
try {
Subscription::cancel($this->scoped, $other);
} catch (Exception $e) {
$this->clientError($e->getMessage());
}
if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
// TRANS: Page title for page to unsubscribe.
$this->element('title', null, _('Unsubscribed'));
$this->elementEnd('head');
$this->elementStart('body');
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$subscribe = new SubscribeForm($this, $other);
$subscribe->show();
$this->elementEnd('body');
$this->elementEnd('html');
} else {
common_redirect(common_local_url('subscriptions',
array('nickname' => $this->scoped->nickname)),
303);
}
}
}