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First commit of the implicit grant
This commit is contained in:
Alex Bilbie
parent
0d0aaa8764
commit
e2794c47af
242
src/Grant/ImplicitGrant.php
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242
src/Grant/ImplicitGrant.php
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<?php
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namespace League\OAuth2\Server\Grant;
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use DateInterval;
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use League\Event\Event;
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use League\OAuth2\Server\Entities\Interfaces\ClientEntityInterface;
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use League\OAuth2\Server\Entities\Interfaces\UserEntityInterface;
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use League\OAuth2\Server\Exception\OAuthServerException;
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use League\OAuth2\Server\Repositories\UserRepositoryInterface;
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use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface;
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use League\OAuth2\Server\Utils\KeyCrypt;
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use League\Plates\Engine;
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use Psr\Http\Message\ServerRequestInterface;
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use Zend\Diactoros\Response;
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use Zend\Diactoros\Uri;
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class ImplicitGrant extends AbstractGrant
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{
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/**
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* @var \League\OAuth2\Server\Repositories\UserRepositoryInterface
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*/
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private $userRepository;
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/**
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* @var null|string
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*/
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private $pathToLoginTemplate;
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/**
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* @var null|string
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*/
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private $pathToAuthorizeTemplate;
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/**
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* @param \League\OAuth2\Server\Repositories\UserRepositoryInterface $userRepository
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* @param string|null $pathToLoginTemplate
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* @param string|null $pathToAuthorizeTemplate
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*/
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public function __construct(
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UserRepositoryInterface $userRepository,
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$pathToLoginTemplate = null,
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$pathToAuthorizeTemplate = null
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) {
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$this->userRepository = $userRepository;
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$this->refreshTokenTTL = new \DateInterval('P1M');
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$this->pathToLoginTemplate = __DIR__ . '/../ResponseTypes/DefaultTemplates/login_user';
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if ($pathToLoginTemplate !== null) {
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$this->pathToLoginTemplate = (substr($pathToLoginTemplate, -4) === '.php')
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? substr($pathToLoginTemplate, 0, -4)
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: $pathToLoginTemplate;
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}
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$this->pathToAuthorizeTemplate = __DIR__ . '/../ResponseTypes/DefaultTemplates/authorize_client';
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if ($pathToAuthorizeTemplate !== null) {
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$this->pathToAuthorizeTemplate = (substr($pathToAuthorizeTemplate, -4) === '.php')
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? substr($pathToAuthorizeTemplate, 0, -4)
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: $pathToAuthorizeTemplate;
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}
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}
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/**
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* {@inheritdoc}
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*/
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public function canRespondToRequest(ServerRequestInterface $request)
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{
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return (array_key_exists('response_type', $request->getQueryParams())
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&& $request->getQueryParams()['response_type'] === 'token');
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}
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/**
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* Return the grant identifier that can be used in matching up requests.
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*
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* @return string
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*/
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public function getIdentifier()
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{
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return 'implicit';
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}
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/**
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* {@inheritdoc}
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*/
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public function respondToRequest(
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ServerRequestInterface $request,
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ResponseTypeInterface $responseType,
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\DateInterval $accessTokenTTL
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) {
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$clientId = $this->getQueryStringParameter(
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'client_id',
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$request,
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$this->getServerParameter('PHP_AUTH_USER', $request)
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);
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if (is_null($clientId)) {
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throw OAuthServerException::invalidRequest('client_id');
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}
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$client = $this->clientRepository->getClientEntity(
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$clientId,
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$this->getIdentifier()
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);
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if ($client instanceof ClientEntityInterface === false) {
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$this->getEmitter()->emit(new Event('client.authentication.failed', $request));
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throw OAuthServerException::invalidClient();
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}
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$redirectUriParameter = $this->getQueryStringParameter('redirect_uri', $request, $client->getRedirectUri());
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if ($redirectUriParameter !== $client->getRedirectUri()) {
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$this->getEmitter()->emit(new Event('client.authentication.failed', $request));
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throw OAuthServerException::invalidClient();
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}
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$scopes = $this->validateScopes($request, $client, $client->getRedirectUri());
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$queryString = http_build_query($request->getQueryParams());
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$postbackUri = new Uri(
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sprintf(
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'//%s%s',
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$request->getServerParams()['HTTP_HOST'],
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$request->getServerParams()['REQUEST_URI']
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)
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);
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$userId = null;
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$userHasApprovedClient = null;
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if ($this->getRequestParameter('action', $request, null) !== null) {
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$userHasApprovedClient = ($this->getRequestParameter('action', $request) === 'approve');
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}
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// Check if the user has been authenticated
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$oauthCookie = $this->getCookieParameter('oauth_authorize_request', $request, null);
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if ($oauthCookie !== null) {
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try {
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$oauthCookiePayload = json_decode(KeyCrypt::decrypt($oauthCookie, $this->pathToPublicKey));
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if (is_object($oauthCookiePayload)) {
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$userId = $oauthCookiePayload->user_id;
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}
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} catch (\LogicException $e) {
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throw OAuthServerException::serverError($e->getMessage());
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}
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}
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// The username + password might be available in $_POST
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$usernameParameter = $this->getRequestParameter('username', $request, null);
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$passwordParameter = $this->getRequestParameter('password', $request, null);
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$loginError = null;
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// Assert if the user has logged in already
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if ($userId === null && $usernameParameter !== null && $passwordParameter !== null) {
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$userEntity = $this->userRepository->getUserEntityByUserCredentials(
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$usernameParameter,
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$passwordParameter
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);
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if ($userEntity instanceof UserEntityInterface) {
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$userId = $userEntity->getIdentifier();
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} else {
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$loginError = 'Incorrect username or password';
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}
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}
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// The user hasn't logged in yet so show a login form
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if ($userId === null) {
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$engine = new Engine(dirname($this->pathToLoginTemplate));
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$pathParts = explode(DIRECTORY_SEPARATOR, $this->pathToLoginTemplate);
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$html = $engine->render(
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end($pathParts),
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[
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'error' => $loginError,
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'postback_uri' => (string) $postbackUri->withQuery($queryString),
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]
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);
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return new Response\HtmlResponse($html);
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}
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// The user hasn't approved the client yet so show an authorize form
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if ($userId !== null && $userHasApprovedClient === null) {
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$engine = new Engine(dirname($this->pathToAuthorizeTemplate));
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$pathParts = explode(DIRECTORY_SEPARATOR, $this->pathToAuthorizeTemplate);
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$html = $engine->render(
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end($pathParts),
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[
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'client' => $client,
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'scopes' => $scopes,
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'postback_uri' => (string) $postbackUri->withQuery($queryString),
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]
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);
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return new Response\HtmlResponse(
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$html,
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200,
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[
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'Set-Cookie' => sprintf(
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'oauth_authorize_request=%s; Expires=%s',
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urlencode(KeyCrypt::encrypt(
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json_encode([
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'user_id' => $userId,
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]),
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$this->pathToPrivateKey
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)),
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(new \DateTime())->add(new \DateInterval('PT5M'))->format('D, d M Y H:i:s e')
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),
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]
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);
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}
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// The user has either approved or denied the client, so redirect them back
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$redirectUri = new Uri($client->getRedirectUri());
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$redirectPayload = [];
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$stateParameter = $this->getQueryStringParameter('state', $request);
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if ($stateParameter !== null) {
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$redirectPayload['state'] = $stateParameter;
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}
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// THe user approved the client, redirect them back with an access token
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if ($userHasApprovedClient === true) {
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$accessToken = $this->issueAccessToken(
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$accessTokenTTL,
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$client,
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$userId,
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$scopes
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);
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$redirectPayload['access_token'] = $accessToken->convertToJWT($this->pathToPrivateKey);
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$redirectPayload['token_type'] = 'bearer';
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$redirectPayload['expires_in'] = time() - $accessToken->getExpiryDateTime()->getTimestamp();
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return new Response\RedirectResponse($redirectUri->withFragment(http_build_query($redirectPayload)));
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}
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// The user denied the client, redirect them back with an error
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$exception = OAuthServerException::accessDenied('The user denied the request', (string) $redirectUri);
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return $exception->generateHttpResponse(null, true);
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}
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}
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