/**
* Tries to authenticate the given token. Sets isAuthenticated to TRUE if authentication succeeded.
*
* @param \TYPO3\Flow\Security\Authentication\TokenInterface $authenticationToken The token to be authenticated
* @return void
* @Flow\Session(autoStart=true)
*/
public function authenticate(\TYPO3\Flow\Security\Authentication\TokenInterface $authenticationToken)
{
if (!$authenticationToken instanceof SingleSignOnToken) {
throw new \TYPO3\Flow\Security\Exception\UnsupportedAuthenticationTokenException('This provider cannot authenticate the given token.', 1351008039);
}
if ($authenticationToken->getAuthenticationStatus() === \TYPO3\Flow\Security\Authentication\TokenInterface::AUTHENTICATION_NEEDED) {
// Verify signature with server public key
$credentials = $authenticationToken->getCredentials();
$signature = $credentials['signature'];
$accessTokenCipher = $credentials['accessToken'];
$ssoServer = $this->createSsoServer();
if (!$ssoServer->verifyCallbackSignature($accessTokenCipher, $signature)) {
throw new Exception('Could not verify signature of access token', 1351008742);
}
$ssoClient = $this->ssoClientFactory->create();
$accessToken = $ssoClient->decryptCallbackAccessToken($accessTokenCipher);
if ($accessToken === '') {
throw new Exception('Could not decrypt access token', 1351690950);
}
$authenticationData = $ssoServer->redeemAccessToken($ssoClient, $accessToken);
// TODO Check validity of authentication data (presence of "account" and "sessionId")
$account = $this->globalAccountMapper->getAccount($ssoClient, $authenticationData['account']);
$globalSessionId = $authenticationData['sessionId'];
$this->session->addTag('Flowpack_SingleSignOn_Client-' . $globalSessionId);
$authenticationToken->setGlobalSessionId($globalSessionId);
$authenticationToken->setAccount($account);
$authenticationToken->setAuthenticationStatus(\TYPO3\Flow\Security\Authentication\TokenInterface::AUTHENTICATION_SUCCESSFUL);
} elseif ($authenticationToken->getAuthenticationStatus() !== \TYPO3\Flow\Security\Authentication\TokenInterface::AUTHENTICATION_SUCCESSFUL) {
$authenticationToken->setAuthenticationStatus(\TYPO3\Flow\Security\Authentication\TokenInterface::NO_CREDENTIALS_GIVEN);
}
}