gnu-social/plugins/FileQuota/FileQuota.php

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<?php
declare(strict_types = 1);
// {{{ License
// 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/>.
// }}}
namespace Plugin\FileQuota;
use App\Core\Cache;
use App\Core\DB;
use App\Core\Event;
use function App\Core\I18n\_m;
use App\Core\Modules\Plugin;
use App\Util\Common;
use App\Util\Exception\ClientException;
use App\Util\Exception\ServerException;
use EventResult;
/**
* Check attachment file size quotas
*
* @package GNUsocial
* @ccategory Attachment
*
* @author Hugo Sales <hugo@hsal.es>
* @copyright 2021 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
class FileQuota extends Plugin
{
public static function version(): string
{
return '1.0.0';
}
/**
* Check file size to ensure it respects configured file size
* quotas. Handles per file, per user and per user-month quotas.
* Throws on quota violations
*
* @throws ClientException
* @throws ServerException
*/
public function onEnforceUserFileQuota(int $filesize, int $user_id): EventResult
{
$query = <<<'END'
select sum(at.size) as total
from attachment at
join actor_to_attachment ua with at.id = ua.attachment_id
where ua.actor_id = :actor_id and at.size is not null
END;
$max_user_quota = Common::config('attachments', 'user_quota');
if ($max_user_quota !== false) { // If not disabled
$cache_key_user_total = "FileQuota-total-user-{$user_id}";
$user_total = Cache::get($cache_key_user_total, fn () => DB::dql($query, ['actor_id' => $user_id])[0]['total']);
Cache::set($cache_key_user_total, $user_total + $filesize);
if ($user_total + $filesize > $max_user_quota) {
// TRANS: Message given if an upload would exceed user quota.
throw new ClientException(_m('A file this large would exceed your user quota of {quota} bytes.', ['quota' => $max_user_quota]));
}
}
$query .= ' AND MONTH(at.modified) = MONTH(CURRENT_DATE())'
. ' AND YEAR(at.modified) = YEAR(CURRENT_DATE())';
$monthly_quota = Common::config('attachments', 'monthly_quota');
if ($monthly_quota !== false) { // If not disabled
$cache_key_user_monthly = "FileQuota-monthly-user-{$user_id}";
$monthly_total = Cache::get($cache_key_user_monthly, fn () => DB::dql($query, ['actor_id' => $user_id])[0]['total']);
Cache::set($cache_key_user_monthly, $monthly_total + $filesize);
if ($monthly_total + $filesize > $monthly_quota) {
// TRANS: Message given if an upload would exceed user quota.
throw new ClientException(_m('A file this large would exceed your monthly quota of {quota} bytes.', ['quota' => $monthly_quota]));
}
}
return Event::next;
}
/**
* Event raised when GNU social polls the plugin for information about it.
* Adds this plugin's version information to $versions array
*
* @param array $versions inherited from parent
*
* @return bool true hook value
*/
public function onPluginVersion(array &$versions): EventResult
{
$versions[] = [
'name' => 'FileQuota',
'version' => $this->version(),
'author' => 'Hugo Sales',
'homepage' => GNUSOCIAL_PROJECT_URL,
'description', // TRANS: Plugin description. => _m('Plugin to manage user quotas.'),
];
return Event::next;
}
}