gnu-social/actions/pluginenable.php

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<?php
// This file is part of GNU social - https://www.gnu.org/software/social
//
// GNU social 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.
//
// GNU social 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 GNU social. If not, see <http://www.gnu.org/licenses/>.
defined('STATUSNET') || die();
/**
* Plugin enable action.
*
* (Re)-enables a plugin from the default plugins list.
*
* Takes parameters:
*
* - plugin: plugin name
* - token: session token to prevent CSRF attacks
* - ajax: bool; whether to return Ajax or full-browser results
*
* Only works if the current user is logged in.
*
* @category Action
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html AGPLv3
* @link http://status.net/
*/
class PluginenableAction extends Action
{
var $user;
var $plugin;
/**
* Check pre-requisites and instantiate attributes
*
* @param array $args array of arguments (URL, GET, POST)
*
* @return bool success flag
* @throws ClientException
*/
function prepare(array $args = [])
{
parent::prepare($args);
// @fixme these are pretty common, should a parent class factor these out?
// Only allow POST requests
if ($_SERVER['REQUEST_METHOD'] != 'POST') {
// TRANS: Client error displayed when trying to use another method than POST.
// TRANS: Do not translate POST.
$this->clientError(_('This action only accepts POST requests.'));
}
// 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(_m('There was a problem with your session token.'.
' Try again, please.'));
}
// Only for logged-in users
$this->user = common_current_user();
if (empty($this->user)) {
// TRANS: Error message displayed when trying to perform an action that requires a logged in user.
$this->clientError(_m('Not logged in.'));
}
if (!AdminPanelAction::canAdmin('plugins')) {
// TRANS: Client error displayed when trying to enable or disable a plugin without access rights.
$this->clientError(_m('You cannot administer plugins.'));
}
$this->plugin = $this->arg('plugin');
if (!array_key_exists($this->plugin, array_flip(PluginList::grabAllPluginNames()))) {
// TRANS: Client error displayed when trying to enable or disable a non-existing plugin.
$this->clientError(_m('No such plugin.'));
}
return true;
}
/**
* Handle request
*
* Does the subscription and returns results.
*
* @return void
* @throws ClientException
*/
function handle()
{
if (!PluginList::isPluginLoaded($this->plugin)) {
$config_file = INSTALLDIR . DIRECTORY_SEPARATOR . 'config.php';
$handle = fopen($config_file, 'a');
if (!$handle) {
$this->clientError(_m('No permissions for writing to config.php'));
}
$data = PHP_EOL.'addPlugin(\''.$this->plugin.'\'); // Added by sysadmin\'s Plugin UI.';
fwrite($handle, $data);
fclose($handle);
}
$key = 'disable-' . $this->plugin;
Config::save('plugins', $key, $this->overrideValue());
// @fixme this is a pretty common pattern and should be refactored down
if ($this->boolean('ajax')) {
$this->startHTML('text/xml;charset=utf-8');
$this->elementStart('head');
$this->element('title', null, $this->successShortTitle());
$this->elementEnd('head');
$this->elementStart('body');
$form = $this->successNextForm();
$form->show();
$this->elementEnd('body');
$this->endHTML();
} else {
$url = common_local_url('pluginsadminpanel');
common_redirect($url, 303);
}
}
/**
* Value to save into $config['plugins']['disable-<name>']
*/
protected function overrideValue()
{
return 0;
}
protected function successShortTitle()
{
// TRANS: Page title for AJAX form return when enabling a plugin.
return _m('plugin', 'Enabled');
}
protected function successNextForm()
{
return new PluginDisableForm($this, $this->plugin);
}
}