94 lines
2.3 KiB
PHP
94 lines
2.3 KiB
PHP
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<?php
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namespace Friendica\Util;
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use Friendica\Core;
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class BasePath
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{
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/**
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* @brief Returns the base filesystem path of the App
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*
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* It first checks for the internal variable, then for DOCUMENT_ROOT and
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* finally for PWD
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*
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* @param string|null $basepath
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*
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* @return string
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*
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* @throws \Exception if directory isn't usable
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*/
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public static function create($basepath)
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{
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if (!$basepath && !empty($_SERVER['DOCUMENT_ROOT'])) {
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$basepath = $_SERVER['DOCUMENT_ROOT'];
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}
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if (!$basepath && !empty($_SERVER['PWD'])) {
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$basepath = $_SERVER['PWD'];
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}
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return self::getRealPath($basepath);
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}
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/**
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* @brief Returns a normalized file path
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*
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* This is a wrapper for the "realpath" function.
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* That function cannot detect the real path when some folders aren't readable.
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* Since this could happen with some hosters we need to handle this.
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*
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* @param string $path The path that is about to be normalized
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* @return string normalized path - when possible
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*/
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public static function getRealPath($path)
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{
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$normalized = realpath($path);
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if (!is_bool($normalized)) {
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return $normalized;
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} else {
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return $path;
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}
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}
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/**
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* @brief Checks if a given directory is usable for the system
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*
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* @param $directory
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* @param bool $check_writable
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*
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* @return boolean the directory is usable
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*/
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public static function isDirectoryUsable($directory, $check_writable = true)
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{
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if ($directory == '') {
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Core\Logger::log('Directory is empty. This shouldn\'t happen.', Core\Logger::DEBUG);
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return false;
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}
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if (!file_exists($directory)) {
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Core\Logger::log('Path "' . $directory . '" does not exist for user ' . Core\System::getUser(), Core\Logger::DEBUG);
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return false;
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}
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if (is_file($directory)) {
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Core\Logger::log('Path "' . $directory . '" is a file for user ' . Core\System::getUser(), Core\Logger::DEBUG);
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return false;
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}
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if (!is_dir($directory)) {
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Core\Logger::log('Path "' . $directory . '" is not a directory for user ' . Core\System::getUser(), Core\Logger::DEBUG);
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return false;
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}
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if ($check_writable && !is_writable($directory)) {
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Core\Logger::log('Path "' . $directory . '" is not writable for user ' . Core\System::getUser(), Core\Logger::DEBUG);
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return false;
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}
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return true;
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}
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}
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