/**
* Parse CAS server validation response content.
*
* @param string $content
*
* @return CasLoginData
*/
public function parseResponse($content)
{
$dom = new \DOMDocument();
$dom->preserveWhiteSpace = false;
$dom->encoding = "utf-8";
$data = new CasLoginData();
if (@$dom->loadXML($content) !== false) {
$failureElements = $dom->getElementsByTagName('authenticationFailure');
if ($failureElements->length == 0) {
$successElements = $dom->getElementsByTagName("authenticationSuccess");
if ($successElements->length == 1) {
// There should only be one success element, grab it and extract username.
$successElement = $successElements->item(0);
$userElement = $successElement->getElementsByTagName("user");
if ($userElement->length == 1) {
$data->setUsername($userElement->item(0)->nodeValue);
$data->setSuccess();
} else {
$data->setFailure('Malformed CAS validation data.');
}
} else {
// All reponses should have either an authenticationFailure
// or authenticationSuccess node.
$data->setFailure('Malformed CAS validation data.');
}
} else {
$failureElement = $failureElements->item(0);
$errorCode = $failureElement->getAttribute('code');
$errorMsg = $failureElement->nodeValue;
$data->setFailure('CAS Validation error: ' . trim($errorCode) . ': ' . trim($errorMsg));
}
} else {
$data->setFailure('Malformed CAS validation data.');
}
return $data;
}
/**
* Parse CAS server validation response content.
*
* @param string $content
*
* @return CasLoginData
*/
public function parseResponse($content)
{
$splitContent = explode("\n", str_replace("\n\n", "\n", str_replace("\r", "\n", $content)));
$success = strtolower($splitContent[0] === 'yes');
$data = new CasLoginData();
if ($success) {
// Extract the username from the message field and return it.
$username = count($splitContent) > 1 && $splitContent[1] ? $splitContent[1] : null;
if ($username) {
$data->setUsername($username);
$data->setSuccess();
} else {
$data->setFailure('Malformed CAS validation data.');
}
} else {
$data->setFailure('Unknown CAS validation failure.');
}
return $data;
}
/**
* Inspects login data object for a failure and throws exception if needed.
*
* @param CasLoginData $loginData
*/
protected function checkLoginFailure(CasLoginData $loginData)
{
if (!$loginData->isSuccess()) {
throw new AuthenticationException($loginData->getFailureMessage());
}
}
