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<?php /** * This file is part of CodeIgniter 4 framework. * * (c) CodeIgniter Foundation <admin@codeigniter.com> * * For the full copyright and license information, please view * the LICENSE file that was distributed with this source code. */ namespace CodeIgniter\Validation; use CodeIgniter\HTTP\CLIRequest; use CodeIgniter\HTTP\IncomingRequest; use CodeIgniter\HTTP\Request; use CodeIgniter\HTTP\RequestInterface; use Config\Mimes; use Config\Services; use InvalidArgumentException; /** * File validation rules */ class FileRules { /** * Request instance. So we can get access to the files. * * @var IncomingRequest */ protected $request; /** * Constructor. */ public function __construct(?RequestInterface $request = null) { if ($request === null) { $request = Services::request(); } assert($request instanceof IncomingRequest || $request instanceof CLIRequest); $this->request = $request; } /** * Verifies that $name is the name of a valid uploaded file. */ public function uploaded(?string $blank, string $name): bool { if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if (ENVIRONMENT === 'testing') { if ($file->getError() !== 0) { return false; } } else { // Note: cannot unit test this; no way to over-ride ENVIRONMENT? // @codeCoverageIgnoreStart if (! $file->isValid()) { return false; } // @codeCoverageIgnoreEnd } } return true; } /** * Verifies if the file's size in Kilobytes is no larger than the parameter. */ public function max_size(?string $blank, string $params): bool { // Grab the file name off the top of the $params // after we split it. $paramArray = explode(',', $params); if (count($paramArray) !== 2) { throw new InvalidArgumentException('Invalid max_size parameter: "' . $params . '"'); } $name = array_shift($paramArray); if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if ($file->getError() === UPLOAD_ERR_NO_FILE) { return true; } if ($file->getError() === UPLOAD_ERR_INI_SIZE) { return false; } if ($file->getSize() / 1024 > $paramArray[0]) { return false; } } return true; } /** * Uses the mime config file to determine if a file is considered an "image", * which for our purposes basically means that it's a raster image or svg. */ public function is_image(?string $blank, string $params): bool { // Grab the file name off the top of the $params // after we split it. $params = explode(',', $params); $name = array_shift($params); if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if ($file->getError() === UPLOAD_ERR_NO_FILE) { return true; } // We know that our mimes list always has the first mime // start with `image` even when then are multiple accepted types. $type = Mimes::guessTypeFromExtension($file->getExtension()) ?? ''; if (mb_strpos($type, 'image') !== 0) { return false; } } return true; } /** * Checks to see if an uploaded file's mime type matches one in the parameter. */ public function mime_in(?string $blank, string $params): bool { // Grab the file name off the top of the $params // after we split it. $params = explode(',', $params); $name = array_shift($params); if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if ($file->getError() === UPLOAD_ERR_NO_FILE) { return true; } if (! in_array($file->getMimeType(), $params, true)) { return false; } } return true; } /** * Checks to see if an uploaded file's extension matches one in the parameter. */ public function ext_in(?string $blank, string $params): bool { // Grab the file name off the top of the $params // after we split it. $params = explode(',', $params); $name = array_shift($params); if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if ($file->getError() === UPLOAD_ERR_NO_FILE) { return true; } if (! in_array($file->guessExtension(), $params, true)) { return false; } } return true; } /** * Checks an uploaded file to verify that the dimensions are within * a specified allowable dimension. */ public function max_dims(?string $blank, string $params): bool { // Grab the file name off the top of the $params // after we split it. $params = explode(',', $params); $name = array_shift($params); if (! ($files = $this->request->getFileMultiple($name))) { $files = [$this->request->getFile($name)]; } foreach ($files as $file) { if ($file === null) { return false; } if ($file->getError() === UPLOAD_ERR_NO_FILE) { return true; } // Get Parameter sizes $allowedWidth = $params[0] ?? 0; $allowedHeight = $params[1] ?? 0; // Get uploaded image size $info = getimagesize($file->getTempName()); $fileWidth = $info[0]; $fileHeight = $info[1]; if ($fileWidth > $allowedWidth || $fileHeight > $allowedHeight) { return false; } } return true; } }