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<?php |
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namespace Schnittstabil\Psr7\Csrf\Middlewares; |
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use Dflydev\FigCookies\FigResponseCookies; |
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use Dflydev\FigCookies\SetCookie; |
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use Psr\Http\Message\ServerRequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Middleware for sending CSRF tokens by cookies. |
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*/ |
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class RespondWithCookieToken |
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{ |
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/** |
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* Used to generate tokens. |
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* |
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* @var callable |
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*/ |
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protected $tokenGenerator; |
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/** |
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* Cookie name. |
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* |
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* @var string |
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*/ |
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protected $cookieName; |
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/** |
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* Additional SetCookie modifier. |
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* |
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* @var callable|null |
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*/ |
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protected $modify; |
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/** |
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* Create new RespondWithCookieToken middleware. |
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* |
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* @param callable $tokenGenerator Used to generate tokens |
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* @param string $cookieName Cookie name |
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* @param callable $modify Allows to modify the cookie; same signature as `$this->modifyCookie` |
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*/ |
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public function __construct(callable $tokenGenerator, $cookieName = 'XSRF-TOKEN', callable $modify = null) |
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{ |
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$this->tokenGenerator = $tokenGenerator; |
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$this->cookieName = $cookieName; |
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$this->modify = $modify; |
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} |
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/** |
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* Invoke middleware. |
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* |
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* @param ServerRequestInterface $request request object |
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* @param ResponseInterface $response response object |
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* @param callable $next next middleware |
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* |
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* @return ResponseInterface response object |
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* |
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* @SuppressWarnings(PHPMD.StaticAccess) |
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*/ |
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public function __invoke(ServerRequestInterface $request, ResponseInterface $response, callable $next) |
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{ |
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$response = FigResponseCookies::modify( |
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$response, |
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$this->cookieName, |
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function (SetCookie $setCookie) use ($request, $response) { |
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return $this->modifyCookie($request, $response, $setCookie); |
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} |
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); |
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return $next($request, $response); |
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} |
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/** |
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* Modify the `$response` cookie. |
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* |
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* @param ServerRequestInterface $request request object |
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* @param ResponseInterface $response response object |
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* @param SetCookie $setCookie the cookie to modify |
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* |
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* @return SetCookie the modified cookie |
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*/ |
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protected function modifyCookie(ServerRequestInterface $request, ResponseInterface $response, SetCookie $setCookie) |
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{ |
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$setCookie = $setCookie->withValue(call_user_func($this->tokenGenerator)); |
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if ($setCookie->getPath() === null) { |
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$setCookie = $setCookie->withPath('/'); |
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} |
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if ($this->modify !== null) { |
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$setCookie = call_user_func($this->modify, $request, $response, $setCookie); |
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} |
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return $setCookie; |
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} |
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} |
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schnittstabil /
psr7-csrf-middleware
