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by nguereza
01:51
created

ResourceServerMiddleware::process()   A

Complexity

Conditions 2
Paths 2

Size

Total Lines 20
Code Lines 8

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 2
eloc 8
c 1
b 0
f 0
nc 2
nop 2
dl 0
loc 20
rs 10
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<?php
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/**
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 * Platine OAuth2
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 *
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 * Platine OAuth2 is a library that implements the OAuth2 specification
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 *
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 * This content is released under the MIT License (MIT)
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 *
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 * Copyright (c) 2020 Platine OAuth2
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 *
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 * Permission is hereby granted, free of charge, to any person obtaining a copy
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 * of this software and associated documentation files (the "Software"), to deal
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 * in the Software without restriction, including without limitation the rights
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 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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 * copies of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be included in all
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 * copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * SOFTWARE.
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 */
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declare(strict_types=1);
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namespace Platine\OAuth2\Middleware;
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use Platine\Http\Handler\MiddlewareInterface;
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use Platine\Http\Handler\RequestHandlerInterface;
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use Platine\Http\ResponseInterface;
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use Platine\Http\ServerRequestInterface;
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use Platine\OAuth2\Exception\InvalidAccessTokenException;
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use Platine\OAuth2\ResourceServerInterface;
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use Platine\OAuth2\Response\JsonResponse;
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/**
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 * Middleware for a resource server
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 *
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 * This middleware aims to sit very early in your pipeline. It will check if a request has an access token,
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 * and if so, will try to validate it. If the token is invalid, the middleware will immediately return.
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 *
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 * If the token is valid, it will store it as part of the request under the attribute "oauth_token",
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 * so that it can be used later one by a permission system, for instance
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 *
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 * @class ResourceServerMiddleware
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 * @package Platine\OAuth2\Middleware
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 */
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class ResourceServerMiddleware implements MiddlewareInterface
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{
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    /**
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     * The resource server instance
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     * @var ResourceServerInterface
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     */
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    protected ResourceServerInterface $resourceServer;
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    /**
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     * The request attribute name to fetch access token
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     * @var string
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     */
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    protected string $tokenRequestAttribute;
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    /**
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     * Create new instance
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     * @param ResourceServerInterface $resourceServer
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     * @param string $tokenRequestAttribute
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     */
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    public function __construct(
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        ResourceServerInterface $resourceServer,
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        string $tokenRequestAttribute = 'oauth_token'
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    ) {
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        $this->resourceServer = $resourceServer;
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        $this->tokenRequestAttribute = $tokenRequestAttribute;
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    }
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    /**
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     * {@inheritdoc}
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     */
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    public function process(
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        ServerRequestInterface $request,
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        RequestHandlerInterface $handler
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    ): ResponseInterface {
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        try {
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            $token = $this->resourceServer->getAccessToken($request);
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        } catch (InvalidAccessTokenException $ex) {
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            // If we're here, this means that there was an access token, but it's either expired
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            // or invalid. If that's the case we must immediately return
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            return new JsonResponse(
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                [
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                    'error' => $ex->getCode(),
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                    'error_description' => $ex->getMessage(),
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                ],
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                401
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            );
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        }
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        return $handler->handle($request->withAttribute($this->tokenRequestAttribute, $token));
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    }
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}
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