/**
* Tries to authenticate the tokens in the security context (in the given order)
* with the available authentication providers, if needed.
* If the authentication strategy is set to "allTokens", all tokens have to be authenticated.
* If the strategy is set to "oneToken", only one token needs to be authenticated, but the
* authentication will stop after the first authenticated token. The strategy
* "atLeastOne" will try to authenticate at least one and as many tokens as possible.
*
* @return void
* @throws \TYPO3\FLOW3\Security\Exception
* @throws \TYPO3\FLOW3\Security\Exception\AuthenticationRequiredException
*/
public function authenticate()
{
$anyTokenAuthenticated = FALSE;
if ($this->securityContext === NULL) {
throw new \TYPO3\FLOW3\Security\Exception('Cannot authenticate because no security context has been set.', 1232978667);
}
$tokens = $this->securityContext->getAuthenticationTokens();
if (count($tokens) === 0) {
throw new \TYPO3\FLOW3\Security\Exception\AuthenticationRequiredException('The security context contained no tokens which could be authenticated.', 1258721059);
}
foreach ($tokens as $token) {
foreach ($this->providers as $provider) {
if ($provider->canAuthenticate($token) && $token->getAuthenticationStatus() === \TYPO3\FLOW3\Security\Authentication\TokenInterface::AUTHENTICATION_NEEDED) {
$provider->authenticate($token);
if ($token->isAuthenticated()) {
$this->emitAuthenticatedToken($token);
}
break;
}
}
if ($token->isAuthenticated()) {
$anyTokenAuthenticated = TRUE;
if ($this->securityContext->getAuthenticationStrategy() === \TYPO3\FLOW3\Security\Context::AUTHENTICATE_ONE_TOKEN) {
return;
}
} else {
if ($this->securityContext->getAuthenticationStrategy() === \TYPO3\FLOW3\Security\Context::AUTHENTICATE_ALL_TOKENS) {
throw new \TYPO3\FLOW3\Security\Exception\AuthenticationRequiredException('Could not authenticate all tokens, but authenticationStrategy was set to "all".', 1222203912);
}
}
}
if (!$anyTokenAuthenticated && $this->securityContext->getAuthenticationStrategy() !== \TYPO3\FLOW3\Security\Context::AUTHENTICATE_ANY_TOKEN) {
throw new \TYPO3\FLOW3\Security\Exception\AuthenticationRequiredException('Could not authenticate any token. Might be missing or wrong credentials or no authentication provider matched.', 1222204027);
}
}