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<?php |
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namespace Bgy\OAuth2ServerBundle\Security\Utils; |
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use Symfony\Component\HttpFoundation\Request; |
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/** |
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* @author Boris Guéry <[email protected]> |
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*/ |
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class BearerFetcher |
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{ |
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public static function fromRequest(Request $request) |
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{ |
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$tokens = []; |
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$tokens[] = self::fromRequestHeaders($request); |
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$tokens[] = self::fromFormEncodedBody($request); |
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$tokens[] = self::fromQuery($request); |
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$tokens = array_filter($tokens, function($value) { |
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return null !== $value; |
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}); |
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if (count($tokens) > 1) { |
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throw new \LogicException('More than one token were found.'); |
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} |
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if (count($tokens) < 1) { |
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// Don't throw exception here as we may want to allow non-authenticated |
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// requests. |
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return null; |
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} |
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return reset($tokens); |
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} |
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private function fromRequestHeaders(Request $request) |
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{ |
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$header = null; |
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if (!$request->headers->has('authorization')) { |
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// The Authorization header may not be passed to PHP by Apache; |
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// Trying to obtain it through apache_request_headers() |
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if (function_exists('apache_request_headers')) { |
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$headers = apache_request_headers(); |
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if (is_array($headers)) { |
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// Server-side fix for bug in old Android versions (a nice side-effect of this fix means we don't care about capitalization for Authorization) |
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$headers = array_combine(array_map('ucwords', array_keys($headers)), array_values($headers)); |
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if (isset($headers['Authorization'])) { |
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$header = $headers['Authorization']; |
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} |
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} |
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} |
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} else { |
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$header = $request->headers->get('authorization'); |
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} |
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if (!$header) { |
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return null; |
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} |
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if (!preg_match('/' . preg_quote('Bearer', '/') . '\s(\S+)/', $header, $matches)) { |
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return null; |
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} |
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$token = $matches[1]; |
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return $token; |
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} |
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private function fromFormEncodedBody(Request $request) |
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{ |
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if (false === $request->headers->get('content-type')) { |
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return null; |
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} |
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$contentType = $request->headers->get('content-type'); |
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if (!preg_match('/^application\/x-www-form-urlencoded([\s|;].*)?$/', $contentType)) { |
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return null; |
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} |
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if ('GET' === $request->getMethod()) { |
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return null; |
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} |
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// S2 request only decodes form encoded parameters for PUT, DELETE, PATCH. Because we are not so picky, we can't use Request::$request parameter bag... |
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$body = $request->getContent(); |
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parse_str($body, $parameters); |
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if (false === is_array($parameters)) { |
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return null; |
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} |
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if (false === array_key_exists('access_token', $parameters)) { |
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return null; |
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} |
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$token = $parameters['access_token']; |
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return $token; |
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} |
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private function fromQuery(Request $request) |
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{ |
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return $request->query->get('access_token', null); |
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} |
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} |
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borisguery /
oauth2-server-bundle
