/**
* Get contents of Captcha resources (js, css, gif files).
*
* @param string $fileName
*
* @throws BadRequestHttpException
*/
public function getResourceAction($fileName)
{
if (!preg_match('/^[a-z_]+\\.(css|gif|js)$/', $fileName)) {
throw new BadRequestHttpException('Invalid file name.');
}
$resourcePath = realpath(Path::getPublicDirPathInLibrary() . $fileName);
if (!is_file($resourcePath)) {
throw new BadRequestHttpException(sprintf('File "%s" could not be found.', $fileName));
}
// captcha resource file information
$fileInfo = pathinfo($resourcePath);
$fileContents = file_get_contents($resourcePath);
$mimeType = self::getMimeType($fileInfo['extension']);
return new Response($fileContents, 200, array('content-type' => $mimeType));
}
/**
* Load the captcha configuration defaults.
*
* @param SessionInterface $session
*/
private static function loadCaptchaConfigDefaults(SessionInterface $session)
{
self::includeFile(Path::getCaptchaConfigDefaultsFilePath(), true, $session);
}
/**
* Physical path of user's captcha config file.
*
* @param string $path
*
* @throws FileNotFoundException when user's captcha config file path is incorrect
*/
private function normalizePath($path)
{
// physical path of the Symfony's config directory
$pathInConfigDir = Path::getConfigDirPath() . '/' . $path;
if (!is_file($pathInConfigDir)) {
throw new FileNotFoundException(sprintf('File "app/config/%s" could not be found.', $path), 0, null, $path);
}
return $pathInConfigDir;
}