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spaces.php
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Devang Srivastava
parent
7755490b81
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eefa32741e
845 changed files with 50409 additions and 0 deletions
237
aws/GuzzleHttp/RedirectMiddleware.php
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237
aws/GuzzleHttp/RedirectMiddleware.php
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<?php
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namespace GuzzleHttp;
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use GuzzleHttp\Exception\BadResponseException;
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use GuzzleHttp\Exception\TooManyRedirectsException;
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use GuzzleHttp\Promise\PromiseInterface;
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use GuzzleHttp\Psr7;
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use Psr\Http\Message\RequestInterface;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\UriInterface;
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/**
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* Request redirect middleware.
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*
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* Apply this middleware like other middleware using
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* {@see GuzzleHttp\Middleware::redirect()}.
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*/
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class RedirectMiddleware
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{
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const HISTORY_HEADER = 'X-Guzzle-Redirect-History';
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const STATUS_HISTORY_HEADER = 'X-Guzzle-Redirect-Status-History';
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public static $defaultSettings = [
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'max' => 5,
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'protocols' => ['http', 'https'],
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'strict' => false,
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'referer' => false,
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'track_redirects' => false,
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];
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/** @var callable */
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private $nextHandler;
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/**
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* @param callable $nextHandler Next handler to invoke.
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*/
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public function __construct(callable $nextHandler)
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{
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$this->nextHandler = $nextHandler;
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}
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/**
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* @param RequestInterface $request
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* @param array $options
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*
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* @return PromiseInterface
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*/
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public function __invoke(RequestInterface $request, array $options)
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{
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$fn = $this->nextHandler;
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if (empty($options['allow_redirects'])) {
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return $fn($request, $options);
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}
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if ($options['allow_redirects'] === true) {
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$options['allow_redirects'] = self::$defaultSettings;
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} elseif (!is_array($options['allow_redirects'])) {
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throw new \InvalidArgumentException('allow_redirects must be true, false, or array');
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} else {
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// Merge the default settings with the provided settings
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$options['allow_redirects'] += self::$defaultSettings;
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}
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if (empty($options['allow_redirects']['max'])) {
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return $fn($request, $options);
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}
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return $fn($request, $options)
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->then(function (ResponseInterface $response) use ($request, $options) {
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return $this->checkRedirect($request, $options, $response);
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});
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}
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/**
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* @param RequestInterface $request
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* @param array $options
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* @param ResponseInterface|PromiseInterface $response
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*
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* @return ResponseInterface|PromiseInterface
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*/
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public function checkRedirect(
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RequestInterface $request,
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array $options,
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ResponseInterface $response
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) {
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if (substr($response->getStatusCode(), 0, 1) != '3'
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|| !$response->hasHeader('Location')
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) {
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return $response;
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}
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$this->guardMax($request, $options);
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$nextRequest = $this->modifyRequest($request, $options, $response);
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if (isset($options['allow_redirects']['on_redirect'])) {
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call_user_func(
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$options['allow_redirects']['on_redirect'],
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$request,
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$response,
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$nextRequest->getUri()
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);
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}
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/** @var PromiseInterface|ResponseInterface $promise */
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$promise = $this($nextRequest, $options);
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// Add headers to be able to track history of redirects.
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if (!empty($options['allow_redirects']['track_redirects'])) {
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return $this->withTracking(
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$promise,
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(string) $nextRequest->getUri(),
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$response->getStatusCode()
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);
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}
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return $promise;
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}
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private function withTracking(PromiseInterface $promise, $uri, $statusCode)
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{
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return $promise->then(
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function (ResponseInterface $response) use ($uri, $statusCode) {
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// Note that we are pushing to the front of the list as this
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// would be an earlier response than what is currently present
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// in the history header.
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$historyHeader = $response->getHeader(self::HISTORY_HEADER);
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$statusHeader = $response->getHeader(self::STATUS_HISTORY_HEADER);
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array_unshift($historyHeader, $uri);
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array_unshift($statusHeader, $statusCode);
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return $response->withHeader(self::HISTORY_HEADER, $historyHeader)
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->withHeader(self::STATUS_HISTORY_HEADER, $statusHeader);
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}
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);
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}
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private function guardMax(RequestInterface $request, array &$options)
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{
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$current = isset($options['__redirect_count'])
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? $options['__redirect_count']
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: 0;
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$options['__redirect_count'] = $current + 1;
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$max = $options['allow_redirects']['max'];
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if ($options['__redirect_count'] > $max) {
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throw new TooManyRedirectsException(
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"Will not follow more than {$max} redirects",
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$request
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);
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}
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}
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/**
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* @param RequestInterface $request
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* @param array $options
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* @param ResponseInterface $response
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*
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* @return RequestInterface
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*/
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public function modifyRequest(
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RequestInterface $request,
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array $options,
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ResponseInterface $response
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) {
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// Request modifications to apply.
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$modify = [];
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$protocols = $options['allow_redirects']['protocols'];
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// Use a GET request if this is an entity enclosing request and we are
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// not forcing RFC compliance, but rather emulating what all browsers
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// would do.
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$statusCode = $response->getStatusCode();
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if ($statusCode == 303 ||
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($statusCode <= 302 && $request->getBody() && !$options['allow_redirects']['strict'])
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) {
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$modify['method'] = 'GET';
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$modify['body'] = '';
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}
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$modify['uri'] = $this->redirectUri($request, $response, $protocols);
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Psr7\rewind_body($request);
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// Add the Referer header if it is told to do so and only
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// add the header if we are not redirecting from https to http.
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if ($options['allow_redirects']['referer']
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&& $modify['uri']->getScheme() === $request->getUri()->getScheme()
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) {
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$uri = $request->getUri()->withUserInfo('', '');
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$modify['set_headers']['Referer'] = (string) $uri;
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} else {
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$modify['remove_headers'][] = 'Referer';
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}
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// Remove Authorization header if host is different.
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if ($request->getUri()->getHost() !== $modify['uri']->getHost()) {
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$modify['remove_headers'][] = 'Authorization';
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}
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return Psr7\modify_request($request, $modify);
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}
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/**
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* Set the appropriate URL on the request based on the location header
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*
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* @param RequestInterface $request
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* @param ResponseInterface $response
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* @param array $protocols
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*
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* @return UriInterface
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*/
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private function redirectUri(
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RequestInterface $request,
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ResponseInterface $response,
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array $protocols
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) {
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$location = Psr7\UriResolver::resolve(
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$request->getUri(),
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new Psr7\Uri($response->getHeaderLine('Location'))
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);
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// Ensure that the redirect URI is allowed based on the protocols.
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if (!in_array($location->getScheme(), $protocols)) {
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throw new BadResponseException(
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sprintf(
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'Redirect URI, %s, does not use one of the allowed redirect protocols: %s',
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$location,
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implode(', ', $protocols)
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),
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$request,
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$response
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);
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}
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return $location;
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}
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}
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