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by nguereza
01:41
created

ResourceServer::__construct()   A

Complexity

Conditions 1
Paths 1

Size

Total Lines 4
Code Lines 1

Duplication

Lines 0
Ratio 0 %

Importance

Changes 1
Bugs 0 Features 0
Metric Value
cc 1
eloc 1
c 1
b 0
f 0
nc 1
nop 1
dl 0
loc 4
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;
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use Platine\Http\ServerRequestInterface;
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use Platine\OAuth2\Entity\AccessToken;
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use Platine\OAuth2\Exception\InvalidAccessTokenException;
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use Platine\OAuth2\Service\AccessTokenService;
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/**
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 * The resource server main role is to validate the access token and that its scope covers the
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 * requested resource
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 *
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 * Currently, the resource server only implements the Bearer token usage, as described in the
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 * RFC 6750 (http://tools.ietf.org/html/rfc6750)
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 *
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 * @class ResourceServer
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 * @package Platine\OAuth2
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 */
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class ResourceServer implements ResourceServerInterface
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{
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    /**
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     * The AccessTokenService
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     * @var AccessTokenService
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     */
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    protected AccessTokenService $accessTokenService;
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    /**
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     * Create new instance
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     * @param AccessTokenService $accessTokenService
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     */
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    public function __construct(
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        AccessTokenService $accessTokenService
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    ) {
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        $this->accessTokenService = $accessTokenService;
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    }
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    /**
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     * {@inheritdoc}
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     * Note that this method will only match tokens that are not expired and match the given scopes
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     * (if any). If no token is pass, this method will return null, but if a token is given
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     * and does not exist (ie. has been deleted) or is not valid, then it will trigger an exception
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     *
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     * @link   http://tools.ietf.org/html/rfc6750#page-5
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     */
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    public function getAccessToken(ServerRequestInterface $request, $scopes = []): ?AccessToken
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    {
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        $accessToken = $this->getTokenFromRequest($request);
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        if ($accessToken === null) {
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            return null;
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        }
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        /** @var AccessToken|null $token */
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        $token = $this->accessTokenService->getToken($accessToken);
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        if ($token === null || $token->isValid($scopes) === false) {
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            throw InvalidAccessTokenException::invalidToken(
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                'Access token has expired or has been deleted'
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            );
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        }
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        return $token;
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    }
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    /**
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     * Return the access token value using server request
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     * @param ServerRequestInterface $request
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     * @return string|null
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     */
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    protected function getTokenFromRequest(ServerRequestInterface $request): ?string
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    {
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        // The preferred way is using Authorization header
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        if ($request->hasHeader('Authorization')) {
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            // Header value is expected to be "Bearer xxx"
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            $parts = explode(' ', $request->getHeaderLine('Authorization'));
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            if (count($parts) < 2) {
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                return null;
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            }
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            return end($parts);
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        }
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        // Default back to authorization in query param
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        $queryParams = $request->getQueryParams();
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        return $queryParams['access_token'] ?? null;
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    }
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}
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