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<?php |
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/** |
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* abstract strategy for checking auth against parts of the request |
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*/ |
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namespace Graviton\SecurityBundle\Authentication\Strategies; |
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use Symfony\Component\HttpFoundation\HeaderBag; |
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use Symfony\Component\HttpFoundation\ParameterBag; |
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use Symfony\Component\HttpFoundation\Response; |
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use Symfony\Component\HttpKernel\Exception\HttpException; |
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use Symfony\Component\HttpFoundation\RequestStack; |
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/** |
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* Class AbstractHttpStrategy |
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* |
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* @author List of contributors <https://github.com/libgraviton/graviton/graphs/contributors> |
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* @license http://opensource.org/licenses/gpl-license.php GNU Public License |
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* @link http://swisscom.ch |
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*/ |
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abstract class AbstractHttpStrategy implements StrategyInterface |
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{ |
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/** @var RequestStack */ |
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protected $requestStack; |
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/** @var string */ |
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protected $extractUsername; |
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/** @var string */ |
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protected $extractCoreId; |
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/** @var string */ |
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protected $clientIdName; |
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/** |
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* Extracts information from the a request header field. |
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* |
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* @param ParameterBag|HeaderBag $header object representation of the request header. |
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* @param string $fieldname Name of the field to be read. |
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* |
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* @return string |
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*/ |
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protected function extractFieldInfo($header, $fieldname) |
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{ |
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if ($header instanceof ParameterBag || $header instanceof HeaderBag) { |
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$this->validateField($header, $fieldname); |
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$bagValue = $header->get($fieldname, ''); |
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} else { |
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throw new \InvalidArgumentException('Provided request information are not valid.'); |
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} |
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// Get Original requested Value. |
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if (!$this->extractUsername) { |
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return $bagValue; |
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} |
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$pattern = "/((?m)(?<=\b{$this->extractUsername}=)[^,]*)/i"; |
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preg_match($pattern, $bagValue, $matches); |
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if (!$matches) { |
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return ''; |
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} |
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$fieldValue = $matches[0]; |
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if ($this->requestStack && $this->extractCoreId && $this->clientIdName) { |
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$pattern = "/((?m)(?<=\b{$this->extractCoreId}=)[^,]*)/i"; |
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preg_match($pattern, $bagValue, $matches); |
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if ($matches) { |
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$this->requestStack->getCurrentRequest()->attributes->set($this->clientIdName, $matches[0]); |
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} |
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} |
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return $fieldValue; |
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} |
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/** |
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* Verifies that the provided header has the expected/mandatory fields. |
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* |
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* @param ParameterBag|HeaderBag $header object representation of the request header. |
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* @param string $fieldName Name of the header field to be validated. |
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* |
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* @return void |
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* @throws \Symfony\Component\HttpKernel\Exception\HttpException |
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*/ |
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protected function validateField($header, $fieldName) |
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{ |
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$passed = $header->has($fieldName); |
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// return without exception so we can return a dummy user |
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if (true === $passed) { |
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// get rid of anything not a valid character |
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$authInfo = filter_var($header->get($fieldName), FILTER_SANITIZE_STRING); |
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// get rid of whitespaces |
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$patterns = array("\r\n", "\n", "\r", "\s", "\t"); |
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$authInfo = str_replace($patterns, "", trim($authInfo)); |
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// get rid of control characters |
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if (empty($authInfo) || $authInfo !== preg_replace('#[[:cntrl:]]#i', '', $authInfo)) { |
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throw new HttpException( |
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Response::HTTP_NETWORK_AUTHENTICATION_REQUIRED, |
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'Mandatory header field (' . $fieldName . ') not provided or invalid.' |
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); |
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} |
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} |
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} |
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/** |
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* Symfony Container |
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* |
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* @param RequestStack $requestStack request object |
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* @param string $extractUsername identifier in posted params |
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* @param string $extractCoreId client specific identifier |
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* @param string $idName save to request attrivute name |
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* @return void |
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*/ |
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public function setDynamicParameters(RequestStack $requestStack, $extractUsername, $extractCoreId, $idName) |
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{ |
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$this->requestStack = $requestStack; |
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$this->extractUsername = $extractUsername; |
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$this->extractCoreId = $extractCoreId; |
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$this->clientIdName = $idName; |
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} |
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} |
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libgraviton /
graviton
Loading history...
This check marks implicit conversions of arrays to boolean values in a comparison. While in PHP an empty array is considered to be equal (but not identical) to false, this is not always apparent.
Consider making the comparison explicit by using
empty(..)or! empty(...)instead.