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<?php |
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namespace Stevenmaguire\OAuth2\Client\Tool; |
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use GuzzleHttp\Exception\BadResponseException; |
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use GuzzleHttp\Psr7\Uri; |
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use InvalidArgumentException; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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trait ProviderRedirectTrait |
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{ |
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/** |
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* Maximum number of times to follow provider initiated redirects |
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* |
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* @var integer |
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*/ |
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protected $redirectLimit = 2; |
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/** |
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* Retrieves a response for a given request and retrieves subsequent |
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* responses, with authorization headers, if a redirect is detected. |
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* |
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* @param RequestInterface $request |
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* @return ResponseInterface |
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* @throws BadResponseException |
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*/ |
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protected function followRequestRedirects(RequestInterface $request) |
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{ |
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$response = null; |
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$attempts = 0; |
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while ($attempts < $this->redirectLimit) { |
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$attempts++; |
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$response = $this->getHttpClient()->send($request, [ |
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'allow_redirects' => false |
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]); |
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if ($this->isRedirect($response)) { |
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$redirectUrl = new Uri($response->getHeader('Location')[0]); |
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$request = $request->withUri($redirectUrl); |
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} else { |
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break; |
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} |
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} |
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return $response; |
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} |
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/** |
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* Returns the HTTP client instance. |
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* |
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* @return GuzzleHttp\ClientInterface |
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*/ |
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abstract public function getHttpClient(); |
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/** |
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* Retrieves current redirect limit. |
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* |
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* @return integer |
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*/ |
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public function getRedirectLimit() |
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{ |
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return $this->redirectLimit; |
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} |
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/** |
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* Determines if a given response is a redirect. |
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* |
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* @param ResponseInterface $response |
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* |
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* @return boolean |
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*/ |
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protected function isRedirect(ResponseInterface $response) |
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{ |
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$statusCode = $response->getStatusCode(); |
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return $statusCode > 300 && $statusCode < 400 && $response->hasHeader('Location'); |
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} |
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/** |
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* Sends a request instance and returns a response instance. |
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* |
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* @param RequestInterface $request |
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* @return ResponseInterface |
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*/ |
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protected function sendRequest(RequestInterface $request) |
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{ |
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try { |
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$response = $this->followRequestRedirects($request); |
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} catch (BadResponseException $e) { |
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$response = $e->getResponse(); |
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} |
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return $response; |
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} |
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/** |
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* Updates the redirect limit. |
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* |
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* @param integer $limit |
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* @return League\OAuth2\Client\Provider\AbstractProvider |
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* @throws InvalidArgumentException |
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*/ |
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public function setRedirectLimit($limit) |
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{ |
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if (!is_int($limit)) { |
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throw new InvalidArgumentException('redirectLimit must be an integer.'); |
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} |
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if ($limit < 1) { |
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throw new InvalidArgumentException('redirectLimit must be greater than or equal to one.'); |
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} |
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$this->redirectLimit = $limit; |
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return $this; |
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} |
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} |
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