friendica/src/Util/BasePath.php
2021-03-29 08:40:20 +02:00

98 lines
2.4 KiB
PHP

<?php
/**
* @copyright Copyright (C) 2010-2021, the Friendica project
*
* @license GNU AGPL version 3 or any later version
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
namespace Friendica\Util;
class BasePath
{
/**
* @var string
*/
private $baseDir;
/**
* @var array
*/
private $server;
/**
* @param string|null $baseDir The default base path
* @param array $server server arguments
*/
public function __construct(string $baseDir, array $server = [])
{
$this->baseDir = $baseDir;
$this->server = $server;
}
/**
* Returns the base filesystem path of the App
*
* It first checks for the internal variable, then for DOCUMENT_ROOT and
* finally for PWD
*
* @return string
*
* @throws \Exception if directory isn't usable
*/
public function getPath()
{
$baseDir = $this->baseDir;
$server = $this->server;
if ((!$baseDir || !is_dir($baseDir)) && !empty($server['DOCUMENT_ROOT'])) {
$baseDir = $server['DOCUMENT_ROOT'];
}
if ((!$baseDir || !is_dir($baseDir)) && !empty($server['PWD'])) {
$baseDir = $server['PWD'];
}
$baseDir = self::getRealPath($baseDir);
if (!is_dir($baseDir)) {
throw new \Exception(sprintf('\'%s\' is not a valid basepath', $baseDir));
}
return $baseDir;
}
/**
* Returns a normalized file path
*
* This is a wrapper for the "realpath" function.
* That function cannot detect the real path when some folders aren't readable.
* Since this could happen with some hosters we need to handle this.
*
* @param string $path The path that is about to be normalized
* @return string normalized path - when possible
*/
public static function getRealPath($path)
{
$normalized = realpath($path);
if (!is_bool($normalized)) {
return $normalized;
} else {
return $path;
}
}
}