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<?php |
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|
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namespace FluentBoards\App\Services\Libs; |
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|
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use FluentBoards\Framework\Support\Arr; |
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use FluentBoards\App\Services\UploadService; |
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use Exception; |
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|
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class FileSystem |
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{ |
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protected $subDir = ''; |
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|
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public function _setSubDir($subDir) |
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{ |
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$this->subDir = $subDir; |
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return $this; |
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} |
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/** |
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* Read file content from custom upload dir of this application |
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* @return string [path] |
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*/ |
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public function _get($file) |
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{ |
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$arr = explode('/', $file); |
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$fileName = end($arr); |
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|
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$filePath = $this->getDir() . DIRECTORY_SEPARATOR . $fileName; |
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|
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// Use WordPress Filesystem API |
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global $wp_filesystem; |
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if (!function_exists('WP_Filesystem')) { |
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require_once(ABSPATH . 'wp-admin/includes/file.php'); |
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} |
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WP_Filesystem(); |
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|
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return $wp_filesystem->get_contents($filePath); |
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} |
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|
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/** |
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* Get custom upload dir name of this application |
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* @return string [directory path] |
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*/ |
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public function _getDir() |
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{ |
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$uploadDir = wp_upload_dir(); |
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|
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$fbsUploadDir = apply_filters('fluent_boards/upload_folder_name', FLUENT_BOARDS_UPLOAD_DIR); |
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|
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if ($this->subDir) { |
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return $uploadDir['basedir'] . DIRECTORY_SEPARATOR . $fbsUploadDir. DIRECTORY_SEPARATOR. $this->subDir; |
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} |
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|
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return $uploadDir['basedir'] . DIRECTORY_SEPARATOR . $fbsUploadDir; |
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} |
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|
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/** |
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* Legacy Core/Pro entry point: prepare storage, not a verified security boundary. |
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* Rule writes are best effort; $allowProbe is retained for caller compatibility. |
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*/ |
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public function _installUploadProtectionRules($allowProbe = true) |
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{ |
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$directory = (new static())->_getDir(); |
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if (!wp_mkdir_p($directory)) { |
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return false; |
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} |
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$path = $directory . '/.htaccess'; |
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if (!$this->hasUploadProtectionRules($path)) { |
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if (!function_exists('insert_with_markers')) { |
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require_once ABSPATH . 'wp-admin/includes/misc.php'; |
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} |
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insert_with_markers($path, 'Fluent Boards', $this->uploadProtectionRules()); |
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} |
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return true; |
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} |
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|
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protected function uploadProtectionRules() |
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{ |
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return [ |
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'<IfModule mod_authz_core.c>', |
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'Require all denied', |
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'</IfModule>', |
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'<IfModule !mod_authz_core.c>', |
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'Order deny,allow', |
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'Deny from all', |
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'</IfModule>', |
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]; |
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} |
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|
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protected function hasUploadProtectionRules($path) |
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{ |
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if (!is_file($path) || !is_readable($path)) { |
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return false; |
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} |
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$contents = str_replace("\r\n", "\n", file_get_contents($path)); |
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if (preg_match_all('/^# BEGIN Fluent Boards\n(.*?)^# END Fluent Boards$/ms', $contents, $blocks) !== 1) { |
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return false; |
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} |
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$rules = array_values(array_filter(array_map('trim', explode("\n", $blocks[1][0])), function ($line) { |
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return $line !== '' && strpos($line, '#') !== 0; |
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})); |
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return $rules === $this->uploadProtectionRules(); |
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} |
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|
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/** Legacy adapter for older Pro callers; protection is no longer probed over HTTP. */ |
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public function _checkUploadProtection($allowProbe = true) |
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{ |
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return null; |
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} |
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|
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/** |
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* Get absolute path of file using custom upload dir name of this application |
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* @return string [file path] |
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*/ |
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public function _getAbsolutePathOfFile($file) |
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{ |
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return $this->_getDir() . DIRECTORY_SEPARATOR . $file; |
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} |
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|
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/** |
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* Resolve a stored attachment path only when it belongs to Fluent Boards uploads. |
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* |
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* @param string $storedPath |
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* @param int|null $boardId |
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* @return string|null |
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*/ |
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public function _resolveLocalAttachmentPath($storedPath, $boardId = null) |
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{ |
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if (!$storedPath) { |
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return null; |
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} |
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|
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$storedFilename = rawurldecode((string) $storedPath); |
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$isBareFilename = $storedFilename !== '' |
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&& strpos($storedFilename, '/') === false |
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&& strpos($storedFilename, '\\') === false; |
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|
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if ($isBareFilename && $boardId === null) { |
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return null; |
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} |
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|
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$filePath = $isBareFilename ? null : realpath($storedPath); |
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$allowedDirectory = $this->_getDir(); |
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$pluginRoot = realpath($allowedDirectory); |
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|
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if (!$pluginRoot) { |
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return null; |
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} |
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|
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$pluginRoot = rtrim($pluginRoot, DIRECTORY_SEPARATOR); |
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$allowedRoot = $pluginRoot; |
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|
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if ($boardId !== null) { |
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if (!is_int($boardId) && !is_string($boardId)) { |
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return null; |
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} |
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|
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$boardId = filter_var($boardId, FILTER_VALIDATE_INT, [ |
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'options' => ['min_range' => 1], |
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]); |
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if ($boardId === false) { |
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return null; |
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} |
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|
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$allowedDirectory .= DIRECTORY_SEPARATOR . 'board_' . $boardId; |
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if (is_link($allowedDirectory)) { |
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return null; |
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} |
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|
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$allowedRoot = realpath($allowedDirectory); |
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$expectedBoardRoot = $pluginRoot . DIRECTORY_SEPARATOR . 'board_' . $boardId; |
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if (!$allowedRoot || $allowedRoot !== $expectedBoardRoot) { |
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return null; |
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} |
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} |
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|
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if ($isBareFilename) { |
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$filePath = realpath($allowedDirectory . DIRECTORY_SEPARATOR . $storedFilename); |
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} |
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|
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if (!$filePath || !$allowedRoot || !is_file($filePath)) { |
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return null; |
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} |
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|
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$allowedRoot = rtrim($allowedRoot, DIRECTORY_SEPARATOR) . DIRECTORY_SEPARATOR; |
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|
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return strpos($filePath, $allowedRoot) === 0 ? $filePath : null; |
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} |
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|
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/** |
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* Upload request files into the application's custom upload directory. |
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* @return array |
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*/ |
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public function _uploadFromRequest() |
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{ |
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return $this->_put(FluentBoards('request')->files()); |
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} |
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|
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/** |
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* Prepare upload-directory protection before accepting local files. |
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* @param array $files |
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* @return array |
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*/ |
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public function _put($files) |
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{ |
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if (!$this->_installUploadProtectionRules()) { |
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throw new Exception(__('Could not create the upload directory. Please check directory permissions.', 'fluent-boards')); |
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} |
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|
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if (!function_exists('wp_handle_upload')) { |
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require_once(ABSPATH . 'wp-admin/includes/file.php'); |
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} |
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|
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$uploadOverrides = [ |
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'test_form' => false, |
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'mimes' => UploadService::getAllowedMimeMap(), |
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]; |
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$uploadedFiles = []; |
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$files = is_object($files) ? [$files] : (array) $files; |
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|
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$this->_overrideUploadDir(); |
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try { |
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foreach ($files as $file) { |
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$filesArray = $file->toArray(); |
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$filesArray['tmp_name'] = $file->getRealPath(); |
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$extraData = Arr::only($filesArray, ['name', 'size']); |
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if (empty($filesArray['error']) && is_file($filesArray['tmp_name'])) { |
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$filesArray['size'] = filesize($filesArray['tmp_name']); |
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$filesArray['size_in_bytes'] = $filesArray['size']; |
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(new UploadService())->validateFile($filesArray); |
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} |
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$uploadsData = wp_handle_upload($filesArray, $uploadOverrides); |
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if (!empty($uploadsData['error']) || empty($uploadsData['file'])) { |
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throw new Exception($uploadsData['error'] ?? __('File upload failed.', 'fluent-boards')); |
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} |
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|
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// Keep WordPress's actual path; callers also expect a legacy bare filename. |
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$uploadsData['full_path'] = $uploadsData['file']; |
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$uploadsData['file'] = basename($uploadsData['file']); |
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$uploadedFiles[] = array_merge($extraData, $uploadsData); |
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} |
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} catch (Exception $exception) { |
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// The batch fails as a whole, so remove files this call already stored. |
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foreach ($uploadedFiles as $uploadedFile) { |
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wp_delete_file($uploadedFile['full_path']); |
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} |
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throw $exception; |
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} finally { |
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remove_filter('wp_handle_upload_prefilter', [$this, '_renameFileName']); |
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remove_filter('upload_dir', [$this, '_setCustomUploadDir']); |
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} |
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|
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return $uploadedFiles; |
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} |
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|
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/** |
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* Delete a file from custom upload directory of this application |
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* @param array $files |
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* @return void |
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*/ |
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public function _delete($files) |
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{ |
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$files = (array)$files; |
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|
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foreach ($files as $file) { |
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$arr = explode('/', $file); |
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$fileName = end($arr); |
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$filePath = $this->getDir() . '/' . $fileName; |
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if (file_exists($filePath)) { |
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wp_delete_file($filePath); |
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} |
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} |
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} |
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|
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/** |
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* Register filters for custom upload dir |
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*/ |
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public function _overrideUploadDir() |
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{ |
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add_filter('wp_handle_upload_prefilter', [$this, '_renameFileName']); |
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add_filter('upload_dir', [$this, '_setCustomUploadDir']); |
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} |
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|
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/** |
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* Set plugin's custom upload dir |
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* @param array $param |
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* @return array $param |
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*/ |
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public function _setCustomUploadDir($param) |
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{ |
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$fbsUploadDir = apply_filters('fluent_boards/upload_folder_name', FLUENT_BOARDS_UPLOAD_DIR); |
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|
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if ($this->subDir) { |
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$fbsUploadDir .= '/' . $this->subDir; |
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} |
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|
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$param['url'] = trailingslashit($param['baseurl']) . trim($fbsUploadDir, '/'); |
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$param['path'] = trailingslashit($param['basedir']) . trim($fbsUploadDir, '/'); |
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if (!wp_mkdir_p($param['path'])) { |
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$param['error'] = __('Could not create the upload directory.', 'fluent-boards'); |
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} |
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|
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return $param; |
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} |
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|
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/** |
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* Rename the uploaded file name before saving |
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* @param array $file |
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* @return array $file |
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*/ |
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public function _renameFileName($file) |
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{ |
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$prefix = wp_generate_uuid4() . '-'; |
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$prefix = apply_filters('fluent_boards/uploaded_file_name_prefix', $prefix); |
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$file['name'] = $prefix . $file['name']; |
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|
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return $file; |
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} |
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|
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public function _deleteDir($dir) |
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{ |
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$root = realpath($this->_getDir()); |
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$path = $root ? $root . DIRECTORY_SEPARATOR . $dir : ''; |
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$resolved = $path ? realpath($path) : false; |
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// Never remove the storage root, escape it, or follow a directory symlink. |
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if (!$root || !$resolved || is_link($path) |
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|| strpos($resolved, $root . DIRECTORY_SEPARATOR) !== 0) { |
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return false; |
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} |
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|
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return is_dir($resolved) ? $this->deleteContents($resolved) : false; |
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} |
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|
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/** |
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* Delete a directory and its content |
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* Lead Note: this method should be called via scheduler or queue |
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* @param string $dir |
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* @return bool |
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*/ |
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private function deleteContents($dir) |
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{ |
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$files = array_diff(scandir($dir), ['.', '..']); |
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foreach ($files as $file) { |
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if (!is_link("$dir/$file") && is_dir("$dir/$file")) { |
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// Recursively delete subdirectory |
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$this->deleteContents("$dir/$file"); |
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} else { |
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// Delete file |
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// phpcs:ignore WordPress.WP.AlternativeFunctions.unlink_unlink -- Recursive directory cleanup, direct file operations required |
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unlink("$dir/$file"); |
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} |
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} |
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// Delete the directory itself. If the directory is not empty, it will not be deleted. |
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// phpcs:ignore WordPress.WP.AlternativeFunctions.file_system_operations_rmdir -- Recursive directory removal, WP_Filesystem not suitable for this operation |
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return rmdir($dir); |
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} |
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|
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public static function __callStatic($method, $params) |
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{ |
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$instance = new static; |
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|
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return call_user_func_array([$instance, $method], $params); |
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} |
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|
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public function __call($method, $params) |
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{ |
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$hiddenMethod = "_" . $method; |
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|
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$method = method_exists($this, $hiddenMethod) ? $hiddenMethod : $method; |
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|
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return call_user_func_array([$this, $method], $params); |
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} |
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} |
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|
