gnu-social/src/Util/Common.php

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<?php
// {{{ 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/>.
// }}}
/**
* Common utility functions
*
* @package GNUsocial
* @category Util
*
* @author Hugo Sales <hugo@fc.up.pt>
* @copyright 2020 Free Software Foundation, Inc http://www.fsf.org
* @license https://www.gnu.org/licenses/agpl.html GNU AGPL v3 or later
*/
namespace App\Util;
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use App\Core\DB\DB;
use App\Core\Router;
use App\Core\Security;
use Symfony\Component\Security\Core\User\UserInterface;
abstract class Common
{
/**
* Access sysadmin's configuration preferences for GNU social
*/
public static function config(string $section, string $setting)
{
$c = DB::find('config', ['section' => $section, 'setting' => $setting]);
if ($c === null) {
throw new \Exception("The field section = {$section} and setting = {$setting} doesn't exist");
}
return unserialize($c->getValue());
}
/**
* Set sysadmin's configuration preferences for GNU social
*/
public static function setConfig(string $section, string $setting, mixed $value): void
{
$ojb = DB::getPartialReference('config', ['section' => $section, 'setting' => $setting]);
$obj->setValue(serialize($value));
DB::persist($obj);
DB::flush();
}
public static function user(): UserInterface
{
return Security::getUser();
}
/**
* Is the given string identical to a system path or route?
* This could probably be put in some other class, but at
* at the moment, only Nickname requires this functionality.
*/
public static function isSystemPath(string $str): bool
{
// TODO Implement
return false;
// $paths = [];
// // All directory and file names in site root should be blacklisted
// $d = dir(PUBLICDIR);
// while (false !== ($entry = $d->read())) {
// $paths[$entry] = true;
// }
// $d->close();
// // All top level names in the router should be blocked
// $router = Router::get();
// foreach ($router->m->getPaths() as $path) {
// if (preg_match('/^([^\/\?]+)[\/\?]/', $path, $matches) && isset($matches[1])) {
// $paths[$matches[1]] = true;
// }
// }
// // FIXME: this assumes the 'path' is in the first-level directory, though common it's not certain
// foreach (['avatar', 'attachments'] as $cat) {
// $paths[basename(common_config($cat, 'path'))] = true;
// }
// return in_array($str, array_keys($paths));
}
/**
* An internal helper function that converts a $size from php.ini for
* file size limit from the 'human-readable' shorthand into a int. If
* $size is empty (the value is not set in php.ini), returns a default
* value (3M)
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*
* @return int the php.ini upload limit in machine-readable format
*/
public static function sizeStrToInt(string $size): int
{
// `memory_limit` can be -1 and `post_max_size` can be 0
// for unlimited. Consistency.
if (empty($size) || $size === '-1' || $size === '0') {
$size = '3M';
}
$suffix = substr($size, -1);
$size = (int) substr($size, 0, -1);
switch (strtoupper($suffix)) {
case 'P':
$size *= 1024;
// no break
case 'T':
$size *= 1024;
// no break
case 'G':
$size *= 1024;
// no break
case 'M':
$size *= 1024;
// no break
case 'K':
$size *= 1024;
break;
}
return $size;
}
/**
* Uses `size_str_to_int()` to find the smallest value for uploads in php.ini
*
* @return int
*/
public static function getPreferredPhpUploadLimit(): int
{
return min(
self::sizeStrToInt(ini_get('post_max_size')),
self::sizeStrToInt(ini_get('upload_max_filesize')),
self::sizeStrToInt(ini_get('memory_limit'))
);
}
}