/**
* Get the captcha image or sound or validation result.
*/
public function GetCaptchaResponse()
{
if (is_null($this->Captcha)) {
HttpHelper::BadRequest('captcha');
}
$commandString = $this->GetUrlParameter('get');
if (!\LBD_StringHelper::HasValue($commandString)) {
\LBD_HttpHelper::BadRequest('command');
}
$command = \LBD_CaptchaHttpCommand::FromQuerystring($commandString);
switch ($command) {
case \LBD_CaptchaHttpCommand::GetImage:
$responseBody = $this->GetImage();
break;
case \LBD_CaptchaHttpCommand::GetSound:
$responseBody = $this->GetSound();
break;
case \LBD_CaptchaHttpCommand::GetValidationResult:
$responseBody = $this->GetValidationResult();
break;
default:
\LBD_HttpHelper::BadRequest('command');
break;
}
// disallow audio file search engine indexing
header('X-Robots-Tag: noindex, nofollow, noarchive, nosnippet');
echo $responseBody;
exit;
}
/**
* Get contents of Captcha resources (js, css, gif files).
*
* @param string $p_FileName
* @return string
*/
public function GetResource($p_FileName)
{
$resourcePath = realpath(Path::GetPublicDirPathInLibrary() . $p_FileName);
if (!is_readable($resourcePath)) {
HttpHelper::BadRequest('command');
}
// allow caching
HttpHelper::AllowCache();
// captcha resource file information
$fileInfo = pathinfo($resourcePath);
$fileLength = filesize($resourcePath);
$fileContents = file_get_contents($resourcePath);
$mimeType = self::GetMimeType($fileInfo['extension']);
return (new Response($fileContents, 200))->header('Content-Type', $mimeType)->header('Content-Length', $fileLength);
}