/**
* This is a convenience function that can be used to get the token, which can then
* be passed to getAccessTokenData(). The constraints specified by the draft are
* attempted to be adheared to in this method.
*
* As per the Bearer spec (draft 8, section 2) - there are three ways for a client
* to specify the bearer token, in order of preference: Authorization Header,
* POST and GET.
*
* NB: Resource servers MUST accept tokens via the Authorization scheme
* (http://tools.ietf.org/html/rfc6750#section-2).
*
* @todo Should we enforce TLS/SSL in this function?
*
* @see http://tools.ietf.org/html/rfc6750#section-2.1
* @see http://tools.ietf.org/html/rfc6750#section-2.2
* @see http://tools.ietf.org/html/rfc6750#section-2.3
*
* Old Android version bug (at least with version 2.2)
* @see http://code.google.com/p/android/issues/detail?id=6684
*
*/
public function getAccessTokenParameter(HTTP_OAuth2_RequestInterface $request, HTTP_OAuth2_ResponseInterface $response)
{
$headers = $request->headers('AUTHORIZATION');
/**
* Ensure more than one method is not used for including an
* access token
*
* @see http://tools.ietf.org/html/rfc6750#section-3.1
*/
$methodsUsed = !empty($headers) + (bool) $request->query($this->config['token_param_name']) + (bool) $request->request($this->config['token_param_name']);
if ($methodsUsed > 1) {
$response->setError(400, 'invalid_request', 'Only one method may be used to authenticate at a time (Auth header, GET or POST)');
return null;
}
/**
* If no authentication is provided, set the status code
* to 401 and return no other error information
*
* @see http://tools.ietf.org/html/rfc6750#section-3.1
*/
if ($methodsUsed == 0) {
$response->setStatusCode(401);
return null;
}
// HEADER: Get the access token from the header
if (!empty($headers)) {
if (!preg_match('/' . $this->config['token_bearer_header_name'] . '\\s(\\S+)/', $headers, $matches)) {
$response->setError(400, 'invalid_request', 'Malformed auth header');
return null;
}
return $matches[1];
}
if ($request->request($this->config['token_param_name'])) {
// // POST: Get the token from POST data
if (!in_array(strtolower($request->server('REQUEST_METHOD')), array('post', 'put'))) {
$response->setError(400, 'invalid_request', 'When putting the token in the body, the method must be POST or PUT', '#section-2.2');
return null;
}
$contentType = $request->server('CONTENT_TYPE');
if (false !== ($pos = strpos($contentType, ';'))) {
$contentType = substr($contentType, 0, $pos);
}
if ($contentType !== null && $contentType != 'application/x-www-form-urlencoded' && $contentType != 'multipart/form-data') {
// IETF specifies content-type. NB: Not all webservers populate this _SERVER variable
// @see http://tools.ietf.org/html/rfc6750#section-2.2
$response->setError(400, 'invalid_request', 'The content type for POST requests must be "application/x-www-form-urlencoded" OR "multipart/form-data"');
return null;
}
return $request->request($this->config['token_param_name']);
}
// GET method
return $request->query($this->config['token_param_name']);
}
public function getScopeFromRequest(HTTP_OAuth2_RequestInterface $request)
{
// "scope" is valid if passed in either POST or QUERY
return $request->request('scope', $request->query('scope'));
}
public function validateAuthorizeRequest(HTTP_OAuth2_RequestInterface $request, HTTP_OAuth2_ResponseInterface $response)
{
// Make sure a valid client id was supplied (we can not redirect because we were unable to verify the URI)
if (!($client_id = $request->query("client_id"))) {
// We don't have a good URI to use
$response->setError(400, 'invalid_client', "No client id supplied");
return false;
}
// Get client details
if (!($clientData = $this->clientStorage->getClientDetails($client_id))) {
$response->setError(400, 'invalid_client', 'The client id supplied is invalid');
return false;
}
$registered_redirect_uri = isset($clientData['redirect_uri']) ? $clientData['redirect_uri'] : '';
// Make sure a valid redirect_uri was supplied. If specified, it must match the clientData URI.
// @see http://tools.ietf.org/html/rfc6749#section-3.1.2
// @see http://tools.ietf.org/html/rfc6749#section-4.1.2.1
// @see http://tools.ietf.org/html/rfc6749#section-4.2.2.1
if ($supplied_redirect_uri = $request->query('redirect_uri')) {
// validate there is no fragment supplied
$parts = parse_url($supplied_redirect_uri);
if (isset($parts['fragment']) && $parts['fragment']) {
$response->setError(400, 'invalid_uri', 'The redirect URI must not contain a fragment');
return false;
}
// validate against the registered redirect uri(s) if available
if ($registered_redirect_uri && !$this->validateRedirectUri($supplied_redirect_uri, $registered_redirect_uri)) {
$response->setError(400, 'redirect_uri_mismatch', 'The redirect URI provided is missing or does not match', '#section-3.1.2');
return false;
}
$redirect_uri = $supplied_redirect_uri;
} else {
// use the registered redirect_uri if none has been supplied, if possible
if (!$registered_redirect_uri) {
$response->setError(400, 'invalid_uri', 'No redirect URI was supplied or stored');
return false;
}
if (count(explode(' ', $registered_redirect_uri)) > 1) {
$response->setError(400, 'invalid_uri', 'A redirect URI must be supplied when multiple redirect URIs are registered', '#section-3.1.2.3');
return false;
}
$redirect_uri = $registered_redirect_uri;
}
// Select the redirect URI
$response_type = $request->query('response_type');
$state = $request->query('state');
// type and client_id are required
if (!$response_type || !in_array($response_type, $this->getValidResponseTypes())) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'invalid_request', 'Invalid or missing response type', null);
return false;
}
if ($response_type == self::RESPONSE_TYPE_AUTHORIZATION_CODE) {
if (!isset($this->responseTypes['code'])) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'unsupported_response_type', 'authorization code grant type not supported', null);
return false;
}
if (!$this->clientStorage->checkRestrictedGrantType($client_id, 'authorization_code')) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'unauthorized_client', 'The grant type is unauthorized for this client_id', null);
return false;
}
if ($this->responseTypes['code']->enforceRedirect() && !$redirect_uri) {
$response->setError(400, 'redirect_uri_mismatch', 'The redirect URI is mandatory and was not supplied');
return false;
}
} else {
if (!$this->config['allow_implicit']) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'unsupported_response_type', 'implicit grant type not supported', null);
return false;
}
if (!$this->clientStorage->checkRestrictedGrantType($client_id, 'implicit')) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'unauthorized_client', 'The grant type is unauthorized for this client_id', null);
return false;
}
}
// validate requested scope if it exists
$requestedScope = $this->scopeUtil->getScopeFromRequest($request);
if ($requestedScope) {
// restrict scope by client specific scope if applicable,
// otherwise verify the scope exists
$clientScope = $this->clientStorage->getClientScope($client_id);
if (is_null($clientScope) && !$this->scopeUtil->scopeExists($requestedScope) || $clientScope && !$this->scopeUtil->checkScope($requestedScope, $clientScope)) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'invalid_scope', 'An unsupported scope was requested', null);
return false;
}
} else {
// use a globally-defined default scope
$defaultScope = $this->scopeUtil->getDefaultScope($client_id);
if (false === $defaultScope) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, $state, 'invalid_client', 'This application requires you specify a scope parameter', null);
return false;
}
$requestedScope = $defaultScope;
}
// Validate state parameter exists (if configured to enforce this)
if ($this->config['enforce_state'] && !$state) {
$response->setRedirect($this->config['redirect_status_code'], $redirect_uri, null, 'invalid_request', 'The state parameter is required');
return false;
}
// save the input data and return true
$this->scope = $requestedScope;
$this->state = $state;
$this->client_id = $client_id;
// Only save the SUPPLIED redirect URI (@see http://tools.ietf.org/html/rfc6749#section-4.1.3)
$this->redirect_uri = $supplied_redirect_uri;
$this->response_type = $response_type;
return true;
}