AbstractGrant::getClientCredentials() - Code Metrics - Inspection of "Private claims implementation" - thephpleague/oauth2-server - Measure and Improve Code Quality continuously with Scrutinizer

Passed

Pull Request — master (#1122)

by Sebastian

created 2020-07-23 18:04 UTC

AbstractGrant::getClientCredentials() A

↳ Parent: AbstractGrant

Complexity

Conditions	2
Paths	2

Size

Total Lines	13
Code Lines	6

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	7
CRAP Score	2

Importance

Changes

Metric	Value
cc	2
eloc	6
c	0
b	0
f	0
nc	2
nop	1
dl	0
loc	13
ccs	7
cts	7
cp	1
crap	2
rs	10

<?php
/**
 * OAuth 2.0 Abstract grant.
 *
 * @author      Alex Bilbie <[email protected]>
 * @copyright   Copyright (c) Alex Bilbie
 * @license     http://mit-license.org/
 *
 * @link        https://github.com/thephpleague/oauth2-server
 */
namespace League\OAuth2\Server\Grant;

use DateInterval;
use DateTimeImmutable;
use Error;
use Exception;
use League\Event\EmitterAwareTrait;
use League\OAuth2\Server\CryptKey;
use League\OAuth2\Server\CryptTrait;
use League\OAuth2\Server\Entities\AccessTokenEntityInterface;
use League\OAuth2\Server\Entities\AuthCodeEntityInterface;
use League\OAuth2\Server\Entities\ClaimEntityInterface;
use League\OAuth2\Server\Entities\ClientEntityInterface;
use League\OAuth2\Server\Entities\RefreshTokenEntityInterface;
use League\OAuth2\Server\Entities\ScopeEntityInterface;
use League\OAuth2\Server\Exception\OAuthServerException;
use League\OAuth2\Server\Exception\UniqueTokenIdentifierConstraintViolationException;
use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
use League\OAuth2\Server\Repositories\AuthCodeRepositoryInterface;
use League\OAuth2\Server\Repositories\ClaimRepositoryInterface;
use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
use League\OAuth2\Server\Repositories\ScopeRepositoryInterface;
use League\OAuth2\Server\Repositories\UserRepositoryInterface;
use League\OAuth2\Server\RequestEvent;
use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
use LogicException;
use Psr\Http\Message\ServerRequestInterface;
use TypeError;

/**
 * Abstract grant class.
 */
abstract class AbstractGrant implements GrantTypeInterface
{
    use EmitterAwareTrait, CryptTrait;

    const SCOPE_DELIMITER_STRING = ' ';

    const MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS = 10;

    /**
     * @var ClientRepositoryInterface
     */
    protected $clientRepository;

    /**
     * @var AccessTokenRepositoryInterface
     */
    protected $accessTokenRepository;

    /**
     * @var ScopeRepositoryInterface
     */
    protected $scopeRepository;

    /**
     * @var null|ClaimRepositoryInterface
     */
    protected $claimRepository;


    /**
     * @var AuthCodeRepositoryInterface
     */
    protected $authCodeRepository;

    /**
     * @var RefreshTokenRepositoryInterface
     */
    protected $refreshTokenRepository;

    /**
     * @var UserRepositoryInterface
     */
    protected $userRepository;

    /**
     * @var DateInterval
     */
    protected $refreshTokenTTL;

    /**
     * @var CryptKey
     */
    protected $privateKey;

    /**
     * @var string
     */
    protected $defaultScope;

    /**
     * @param ClientRepositoryInterface $clientRepository
     */
    public function setClientRepository(ClientRepositoryInterface $clientRepository)
    {
        $this->clientRepository = $clientRepository;
    }

    /**
     * @param AccessTokenRepositoryInterface $accessTokenRepository
     */
    public function setAccessTokenRepository(AccessTokenRepositoryInterface $accessTokenRepository)
    {
        $this->accessTokenRepository = $accessTokenRepository;
    }

    /**
     * @param ScopeRepositoryInterface $scopeRepository
     */
    public function setScopeRepository(ScopeRepositoryInterface $scopeRepository)
    {
        $this->scopeRepository = $scopeRepository;
    }

    /**
     * @param ClaimRepositoryInterface $claimRepository
     */
    public function setClaimRepository(?ClaimRepositoryInterface $claimRepository)
    {
        $this->claimRepository = $claimRepository;
    }

    /**
     * @param RefreshTokenRepositoryInterface $refreshTokenRepository
     */
    public function setRefreshTokenRepository(RefreshTokenRepositoryInterface $refreshTokenRepository)
    {
        $this->refreshTokenRepository = $refreshTokenRepository;
    }

    /**
     * @param AuthCodeRepositoryInterface $authCodeRepository
     */
    public function setAuthCodeRepository(AuthCodeRepositoryInterface $authCodeRepository)
    {
        $this->authCodeRepository = $authCodeRepository;
    }

    /**
     * @param UserRepositoryInterface $userRepository
     */
    public function setUserRepository(UserRepositoryInterface $userRepository)
    {
        $this->userRepository = $userRepository;
    }

    /**
     * {@inheritdoc}
     */
    public function setRefreshTokenTTL(DateInterval $refreshTokenTTL)
    {
        $this->refreshTokenTTL = $refreshTokenTTL;
    }

    /**
     * Set the private key
     *
     * @param CryptKey $key
     */
    public function setPrivateKey(CryptKey $key)
    {
        $this->privateKey = $key;
    }

    /**
     * @param string $scope
     */
    public function setDefaultScope($scope)
    {
        $this->defaultScope = $scope;
    }

    /**
     * Validate the client.
     *
     * @param ServerRequestInterface $request
     *
     * @throws OAuthServerException
     *
     * @return ClientEntityInterface
     */
    protected function validateClient(ServerRequestInterface $request)
    {
        list($clientId, $clientSecret) = $this->getClientCredentials($request);

        if ($this->clientRepository->validateClient($clientId, $clientSecret, $this->getIdentifier()) === false) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));

            throw OAuthServerException::invalidClient($request);
        }

        $client = $this->getClientEntityOrFail($clientId, $request);

        // If a redirect URI is provided ensure it matches what is pre-registered
        $redirectUri = $this->getRequestParameter('redirect_uri', $request, null);

        if ($redirectUri !== null) {
            $this->validateRedirectUri($redirectUri, $client, $request);
        }

        return $client;
    }

    /**
     * Wrapper around ClientRepository::getClientEntity() that ensures we emit
     * an event and throw an exception if the repo doesn't return a client
     * entity.
     *
     * This is a bit of defensive coding because the interface contract
     * doesn't actually enforce non-null returns/exception-on-no-client so
     * getClientEntity might return null. By contrast, this method will
     * always either return a ClientEntityInterface or throw.
     *
     * @param string                 $clientId
     * @param ServerRequestInterface $request
     *
     * @return ClientEntityInterface
     */
    protected function getClientEntityOrFail($clientId, ServerRequestInterface $request)
    {
        $client = $this->clientRepository->getClientEntity($clientId);

        if ($client instanceof ClientEntityInterface === false) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
            throw OAuthServerException::invalidClient($request);
        }

        return $client;
    }

    /**
     * Gets the client credentials from the request from the request body or
     * the Http Basic Authorization header
     *
     * @param ServerRequestInterface $request
     *
     * @return array
     */
    protected function getClientCredentials(ServerRequestInterface $request)
    {
        list($basicAuthUser, $basicAuthPassword) = $this->getBasicAuthCredentials($request);

        $clientId = $this->getRequestParameter('client_id', $request, $basicAuthUser);

        if (\is_null($clientId)) {
            throw OAuthServerException::invalidRequest('client_id');
        }

        $clientSecret = $this->getRequestParameter('client_secret', $request, $basicAuthPassword);

        return [$clientId, $clientSecret];
    }

    /**
     * Validate redirectUri from the request.
     * If a redirect URI is provided ensure it matches what is pre-registered
     *
     * @param string                 $redirectUri
     * @param ClientEntityInterface  $client
     * @param ServerRequestInterface $request
     *
     * @throws OAuthServerException
     */
    protected function validateRedirectUri(
        string $redirectUri,
        ClientEntityInterface $client,
        ServerRequestInterface $request
    ) {
        if (\is_string($client->getRedirectUri())
            && (\strcmp($client->getRedirectUri(), $redirectUri) !== 0)
        ) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
            throw OAuthServerException::invalidClient($request);
        } elseif (\is_array($client->getRedirectUri())
            && \in_array($redirectUri, $client->getRedirectUri(), true) === false
        ) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
            throw OAuthServerException::invalidClient($request);
        }
    }

    /**
     * Validate scopes in the request.
     *
     * @param string|array $scopes
     * @param string       $redirectUri
     *
     * @throws OAuthServerException
     *
     * @return ScopeEntityInterface[]
     */
    public function validateScopes($scopes, $redirectUri = null)
    {
        if (!\is_array($scopes)) {
            $scopes = $this->convertScopesQueryStringToArray($scopes);
        }

        $validScopes = [];

        foreach ($scopes as $scopeItem) {
            $scope = $this->scopeRepository->getScopeEntityByIdentifier($scopeItem);

            if ($scope instanceof ScopeEntityInterface === false) {
                throw OAuthServerException::invalidScope($scopeItem, $redirectUri);
            }

            $validScopes[] = $scope;
        }

        return $validScopes;
    }

    /**
     * Converts a scopes query string to an array to easily iterate for validation.
     *
     * @param string $scopes
     *
     * @return array
     */
    private function convertScopesQueryStringToArray($scopes)
    {
        return \array_filter(\explode(self::SCOPE_DELIMITER_STRING, \trim($scopes)), function ($scope) {
            return !empty($scope);
        });
    }

    /**
     * Retrieve request parameter.
     *
     * @param string                 $parameter
     * @param ServerRequestInterface $request
     * @param mixed                  $default
     *
     * @return null|string
     */
    protected function getRequestParameter($parameter, ServerRequestInterface $request, $default = null)
    {
        $requestParameters = (array) $request->getParsedBody();

        return $requestParameters[$parameter] ?? $default;
    }

    /**
     * Retrieve HTTP Basic Auth credentials with the Authorization header
     * of a request. First index of the returned array is the username,
     * second is the password (so list() will work). If the header does
     * not exist, or is otherwise an invalid HTTP Basic header, return
     * [null, null].
     *
     * @param ServerRequestInterface $request
     *
     * @return string[]|null[]
     */
    protected function getBasicAuthCredentials(ServerRequestInterface $request)
    {
        if (!$request->hasHeader('Authorization')) {
            return [null, null];
        }

        $header = $request->getHeader('Authorization')[0];
        if (\strpos($header, 'Basic ') !== 0) {
            return [null, null];
        }

        if (!($decoded = \base64_decode(\substr($header, 6)))) {
            return [null, null];
        }

        if (\strpos($decoded, ':') === false) {
            return [null, null]; // HTTP Basic header without colon isn't valid
        }

        return \explode(':', $decoded, 2);
    }

    /**
     * Retrieve query string parameter.
     *
     * @param string                 $parameter
     * @param ServerRequestInterface $request
     * @param mixed                  $default
     *
     * @return null|string
     */
    protected function getQueryStringParameter($parameter, ServerRequestInterface $request, $default = null)
    {
        return isset($request->getQueryParams()[$parameter]) ? $request->getQueryParams()[$parameter] : $default;
    }

    /**
     * Retrieve cookie parameter.
     *
     * @param string                 $parameter
     * @param ServerRequestInterface $request
     * @param mixed                  $default
     *
     * @return null|string
     */
    protected function getCookieParameter($parameter, ServerRequestInterface $request, $default = null)
    {
        return isset($request->getCookieParams()[$parameter]) ? $request->getCookieParams()[$parameter] : $default;
    }

    /**
     * Retrieve server parameter.
     *
     * @param string                 $parameter
     * @param ServerRequestInterface $request
     * @param mixed                  $default
     *
     * @return null|string
     */
    protected function getServerParameter($parameter, ServerRequestInterface $request, $default = null)
    {
        return isset($request->getServerParams()[$parameter]) ? $request->getServerParams()[$parameter] : $default;
    }

    /**
     * Issue an access token.
     *
     * @param DateInterval           $accessTokenTTL
     * @param ClientEntityInterface  $client
     * @param string|null            $userIdentifier
     * @param ScopeEntityInterface[] $scopes
     * @param ClaimEntityInterface[] $claims
     *
     * @throws OAuthServerException
     * @throws UniqueTokenIdentifierConstraintViolationException
     *
     * @return AccessTokenEntityInterface
     */
    protected function issueAccessToken(
        DateInterval $accessTokenTTL,
        ClientEntityInterface $client,
        $userIdentifier,
        array $scopes = [],
        array $claims = []
    ) {
        $maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;

        $accessToken = $this->accessTokenRepository->getNewToken($client, $scopes, $userIdentifier);
        $accessToken->setExpiryDateTime((new DateTimeImmutable())->add($accessTokenTTL));
        $accessToken->setPrivateKey($this->privateKey);
        foreach ($claims as $claim){
            $accessToken->addClaim($claim);
        }

        while ($maxGenerationAttempts-- > 0) {
            $accessToken->setIdentifier($this->generateUniqueIdentifier());
            try {
                $this->accessTokenRepository->persistNewAccessToken($accessToken);

                return $accessToken;
            } catch (UniqueTokenIdentifierConstraintViolationException $e) {
                if ($maxGenerationAttempts === 0) {
                    throw $e;
                }
            }
        }
    }

    /**
     * Issue an auth code.
     *
     * @param DateInterval           $authCodeTTL
     * @param ClientEntityInterface  $client
     * @param string                 $userIdentifier
     * @param string|null            $redirectUri
     * @param ScopeEntityInterface[] $scopes
     *
     * @throws OAuthServerException
     * @throws UniqueTokenIdentifierConstraintViolationException
     *
     * @return AuthCodeEntityInterface
     */
    protected function issueAuthCode(
        DateInterval $authCodeTTL,
        ClientEntityInterface $client,
        $userIdentifier,
        $redirectUri,
        array $scopes = []
    ) {
        $maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;

        $authCode = $this->authCodeRepository->getNewAuthCode();
        $authCode->setExpiryDateTime((new DateTimeImmutable())->add($authCodeTTL));
        $authCode->setClient($client);
        $authCode->setUserIdentifier($userIdentifier);

        if ($redirectUri !== null) {
            $authCode->setRedirectUri($redirectUri);
        }

        foreach ($scopes as $scope) {
            $authCode->addScope($scope);
        }

        while ($maxGenerationAttempts-- > 0) {
            $authCode->setIdentifier($this->generateUniqueIdentifier());
            try {
                $this->authCodeRepository->persistNewAuthCode($authCode);

                return $authCode;
            } catch (UniqueTokenIdentifierConstraintViolationException $e) {
                if ($maxGenerationAttempts === 0) {
                    throw $e;
                }
            }
        }
    }

    /**
     * @param AccessTokenEntityInterface $accessToken
     *
     * @throws OAuthServerException
     * @throws UniqueTokenIdentifierConstraintViolationException
     *
     * @return RefreshTokenEntityInterface|null
     */
    protected function issueRefreshToken(AccessTokenEntityInterface $accessToken)
    {
        $refreshToken = $this->refreshTokenRepository->getNewRefreshToken();

        if ($refreshToken === null) {
            return null;
        }

        $refreshToken->setExpiryDateTime((new DateTimeImmutable())->add($this->refreshTokenTTL));
        $refreshToken->setAccessToken($accessToken);

        $maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;

        while ($maxGenerationAttempts-- > 0) {
            $refreshToken->setIdentifier($this->generateUniqueIdentifier());
            try {
                $this->refreshTokenRepository->persistNewRefreshToken($refreshToken);

                return $refreshToken;
            } catch (UniqueTokenIdentifierConstraintViolationException $e) {
                if ($maxGenerationAttempts === 0) {
                    throw $e;
                }
            }
        }
    }

    /**
     * Generate a new unique identifier.
     *
     * @param int $length
     *
     * @throws OAuthServerException
     *
     * @return string
     */
    protected function generateUniqueIdentifier($length = 40)
    {
        try {
            return \bin2hex(\random_bytes($length));
            // @codeCoverageIgnoreStart
        } catch (TypeError $e) {
            throw OAuthServerException::serverError('An unexpected error has occurred', $e);
        } catch (Error $e) {
            throw OAuthServerException::serverError('An unexpected error has occurred', $e);
        } catch (Exception $e) {
            // If you get this message, the CSPRNG failed hard.
            throw OAuthServerException::serverError('Could not generate a random string', $e);
        }
        // @codeCoverageIgnoreEnd
    }

    /**
     * {@inheritdoc}
     */
    public function canRespondToAccessTokenRequest(ServerRequestInterface $request)
    {
        $requestParameters = (array) $request->getParsedBody();

        return (
            \array_key_exists('grant_type', $requestParameters)
            && $requestParameters['grant_type'] === $this->getIdentifier()
        );
    }

    /**
     * {@inheritdoc}
     */
    public function canRespondToAuthorizationRequest(ServerRequestInterface $request)
    {
        return false;
    }

    /**
     * {@inheritdoc}
     */
    public function validateAuthorizationRequest(ServerRequestInterface $request)
    {
        throw new LogicException('This grant cannot validate an authorization request');
    }

    /**
     * {@inheritdoc}
     */
    public function completeAuthorizationRequest(AuthorizationRequest $authorizationRequest)
    {
        throw new LogicException('This grant cannot complete an authorization request');
    }
}


1		<?php
2		/**
3		* OAuth 2.0 Abstract grant.
4		*
5		* @author Alex Bilbie <[email protected]>
6		* @copyright Copyright (c) Alex Bilbie
7		* @license http://mit-license.org/
8		*
9		* @link https://github.com/thephpleague/oauth2-server
10		*/
11		namespace League\OAuth2\Server\Grant;
12
13		use DateInterval;
14		use DateTimeImmutable;
15		use Error;
16		use Exception;
17		use League\Event\EmitterAwareTrait;
18		use League\OAuth2\Server\CryptKey;
19		use League\OAuth2\Server\CryptTrait;
20		use League\OAuth2\Server\Entities\AccessTokenEntityInterface;
21		use League\OAuth2\Server\Entities\AuthCodeEntityInterface;
22		use League\OAuth2\Server\Entities\ClaimEntityInterface;
23		use League\OAuth2\Server\Entities\ClientEntityInterface;
24		use League\OAuth2\Server\Entities\RefreshTokenEntityInterface;
25		use League\OAuth2\Server\Entities\ScopeEntityInterface;
26		use League\OAuth2\Server\Exception\OAuthServerException;
27		use League\OAuth2\Server\Exception\UniqueTokenIdentifierConstraintViolationException;
28		use League\OAuth2\Server\Repositories\AccessTokenRepositoryInterface;
29		use League\OAuth2\Server\Repositories\AuthCodeRepositoryInterface;
30		use League\OAuth2\Server\Repositories\ClaimRepositoryInterface;
31		use League\OAuth2\Server\Repositories\ClientRepositoryInterface;
32		use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
33		use League\OAuth2\Server\Repositories\ScopeRepositoryInterface;
34		use League\OAuth2\Server\Repositories\UserRepositoryInterface;
35		use League\OAuth2\Server\RequestEvent;
36		use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
37		use LogicException;
38		use Psr\Http\Message\ServerRequestInterface;
39		use TypeError;
40
41		/**
42		* Abstract grant class.
43		*/
44		abstract class AbstractGrant implements GrantTypeInterface
45		{
46		use EmitterAwareTrait, CryptTrait;
47
48		const SCOPE_DELIMITER_STRING = ' ';
49
50		const MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS = 10;
51
52		/**
53		* @var ClientRepositoryInterface
54		*/
55		protected $clientRepository;
56
57		/**
58		* @var AccessTokenRepositoryInterface
59		*/
60		protected $accessTokenRepository;
61
62		/**
63		* @var ScopeRepositoryInterface
64		*/
65		protected $scopeRepository;
66
67		/**
68		* @var null\|ClaimRepositoryInterface
69		*/
70		protected $claimRepository;
71
72
73		/**
74		* @var AuthCodeRepositoryInterface
75		*/
76		protected $authCodeRepository;
77
78		/**
79		* @var RefreshTokenRepositoryInterface
80		*/
81		protected $refreshTokenRepository;
82
83		/**
84		* @var UserRepositoryInterface
85		*/
86		protected $userRepository;
87
88		/**
89		* @var DateInterval
90		*/
91		protected $refreshTokenTTL;
92
93		/**
94		* @var CryptKey
95		*/
96		protected $privateKey;
97
98		/**
99		* @var string
100		*/
101		protected $defaultScope;
102
103		/**
104		* @param ClientRepositoryInterface $clientRepository
105		*/
106	74	public function setClientRepository(ClientRepositoryInterface $clientRepository)
107		{
108	74	$this->clientRepository = $clientRepository;
109	74	}
110
111		/**
112		* @param AccessTokenRepositoryInterface $accessTokenRepository
113		*/
114	46	public function setAccessTokenRepository(AccessTokenRepositoryInterface $accessTokenRepository)
115		{
116	46	$this->accessTokenRepository = $accessTokenRepository;
117	46	}
118
119		/**
120		* @param ScopeRepositoryInterface $scopeRepository
121		*/
122	44	public function setScopeRepository(ScopeRepositoryInterface $scopeRepository)
123		{
124	44	$this->scopeRepository = $scopeRepository;
125	44	}
126
127		/**
128		* @param ClaimRepositoryInterface $claimRepository
129		*/
130	11	public function setClaimRepository(?ClaimRepositoryInterface $claimRepository)
131		{
132	11	$this->claimRepository = $claimRepository;
133	11	}
134
135		/**
136		* @param RefreshTokenRepositoryInterface $refreshTokenRepository
137		*/
138	65	public function setRefreshTokenRepository(RefreshTokenRepositoryInterface $refreshTokenRepository)
139		{
140	65	$this->refreshTokenRepository = $refreshTokenRepository;
141	65	}
142
143		/**
144		* @param AuthCodeRepositoryInterface $authCodeRepository
145		*/
146	48	public function setAuthCodeRepository(AuthCodeRepositoryInterface $authCodeRepository)
147		{
148	48	$this->authCodeRepository = $authCodeRepository;
149	48	}
150
151		/**
152		* @param UserRepositoryInterface $userRepository
153		*/
154	6	public function setUserRepository(UserRepositoryInterface $userRepository)
155		{
156	6	$this->userRepository = $userRepository;
157	6	}
158
159		/**
160		* {@inheritdoc}
161		*/
162	2	public function setRefreshTokenTTL(DateInterval $refreshTokenTTL)
163		{
164	2	$this->refreshTokenTTL = $refreshTokenTTL;
165	2	}
166
167		/**
168		* Set the private key
169		*
170		* @param CryptKey $key
171		*/
172	35	public function setPrivateKey(CryptKey $key)
173		{
174	35	$this->privateKey = $key;
175	35	}
176
177		/**
178		* @param string $scope
179		*/
180	19	public function setDefaultScope($scope)
181		{
182	19	$this->defaultScope = $scope;
183	19	}
184
185		/**
186		* Validate the client.
187		*
188		* @param ServerRequestInterface $request
189		*
190		* @throws OAuthServerException
191		*
192		* @return ClientEntityInterface
193		*/
194	41	protected function validateClient(ServerRequestInterface $request)
195		{
196	41	list($clientId, $clientSecret) = $this->getClientCredentials($request);
197
198	39	if ($this->clientRepository->validateClient($clientId, $clientSecret, $this->getIdentifier()) === false) {
199	5	$this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
200
201	5	throw OAuthServerException::invalidClient($request);
202		}
203
204	34	$client = $this->getClientEntityOrFail($clientId, $request);
205
206		// If a redirect URI is provided ensure it matches what is pre-registered
207	34	$redirectUri = $this->getRequestParameter('redirect_uri', $request, null);
208
209	34	if ($redirectUri !== null) {
210	16	$this->validateRedirectUri($redirectUri, $client, $request);
211		}
212
213	32	return $client;
214		}
215
216		/**
217		* Wrapper around ClientRepository::getClientEntity() that ensures we emit
218		* an event and throw an exception if the repo doesn't return a client
219		* entity.
220		*
221		* This is a bit of defensive coding because the interface contract
222		* doesn't actually enforce non-null returns/exception-on-no-client so
223		* getClientEntity might return null. By contrast, this method will
224		* always either return a ClientEntityInterface or throw.
225		*
226		* @param string $clientId
227		* @param ServerRequestInterface $request
228		*
229		* @return ClientEntityInterface
230		*/
231	63	protected function getClientEntityOrFail($clientId, ServerRequestInterface $request)
232		{
233	63	$client = $this->clientRepository->getClientEntity($clientId);
234
235	63	if ($client instanceof ClientEntityInterface === false) {
236	3	$this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
237	3	throw OAuthServerException::invalidClient($request);
238		}
239
240	60	return $client;
241		}
242
243		/**
244		* Gets the client credentials from the request from the request body or
245		* the Http Basic Authorization header
246		*
247		* @param ServerRequestInterface $request
248		*
249		* @return array
250		*/
251	50	protected function getClientCredentials(ServerRequestInterface $request)
252		{
253	50	list($basicAuthUser, $basicAuthPassword) = $this->getBasicAuthCredentials($request);
254
255	50	$clientId = $this->getRequestParameter('client_id', $request, $basicAuthUser);
256
257	50	if (\is_null($clientId)) {
258	2	throw OAuthServerException::invalidRequest('client_id');
259		}
260
261	48	$clientSecret = $this->getRequestParameter('client_secret', $request, $basicAuthPassword);
262
263	48	return [$clientId, $clientSecret];
264		}
265
266		/**
267		* Validate redirectUri from the request.
268		* If a redirect URI is provided ensure it matches what is pre-registered
269		*
270		* @param string $redirectUri
271		* @param ClientEntityInterface $client
272		* @param ServerRequestInterface $request
273		*
274		* @throws OAuthServerException
275		*/
276	31	protected function validateRedirectUri(
277		string $redirectUri,
278		ClientEntityInterface $client,
279		ServerRequestInterface $request
280		) {
281	31	if (\is_string($client->getRedirectUri())
282	31	&& (\strcmp($client->getRedirectUri(), $redirectUri) !== 0)
283		) {
284	3	$this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
285	3	throw OAuthServerException::invalidClient($request);
286	28	} elseif (\is_array($client->getRedirectUri())
287	28	&& \in_array($redirectUri, $client->getRedirectUri(), true) === false
288		) {
289	3	$this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
290	3	throw OAuthServerException::invalidClient($request);
291		}
292	25	}
293
294		/**
295		* Validate scopes in the request.
296		*
297		* @param string\|array $scopes
298		* @param string $redirectUri
299		*
300		* @throws OAuthServerException
301		*
302		* @return ScopeEntityInterface[]
303		*/
304	40	public function validateScopes($scopes, $redirectUri = null)
305		{
306	40	if (!\is_array($scopes)) {
307	26	$scopes = $this->convertScopesQueryStringToArray($scopes);
308		}
309
310	40	$validScopes = [];
311
312	40	foreach ($scopes as $scopeItem) {
313	35	$scope = $this->scopeRepository->getScopeEntityByIdentifier($scopeItem);
314
315	35	if ($scope instanceof ScopeEntityInterface === false) {
316	2	throw OAuthServerException::invalidScope($scopeItem, $redirectUri);
317		}
318
319	33	$validScopes[] = $scope;
320		}
321
322	38	return $validScopes;
323		}
324
325		/**
326		* Converts a scopes query string to an array to easily iterate for validation.
327		*
328		* @param string $scopes
329		*
330		* @return array
331		*/
332	26	private function convertScopesQueryStringToArray($scopes)
333		{
334		return \array_filter(\explode(self::SCOPE_DELIMITER_STRING, \trim($scopes)), function ($scope) {
335	26	return !empty($scope);
336	26	});
337		}
338
339		/**
340		* Retrieve request parameter.
341		*
342		* @param string $parameter
343		* @param ServerRequestInterface $request
344		* @param mixed $default
345		*
346		* @return null\|string
347		*/
348	50	protected function getRequestParameter($parameter, ServerRequestInterface $request, $default = null)
349		{
350	50	$requestParameters = (array) $request->getParsedBody();
351
352	50	return $requestParameters[$parameter] ?? $default;
353		}
354
355		/**
356		* Retrieve HTTP Basic Auth credentials with the Authorization header
357		* of a request. First index of the returned array is the username,
358		* second is the password (so list() will work). If the header does
359		* not exist, or is otherwise an invalid HTTP Basic header, return
360		* [null, null].
361		*
362		* @param ServerRequestInterface $request
363		*
364		* @return string[]\|null[]
365		*/
366	55	protected function getBasicAuthCredentials(ServerRequestInterface $request)
367		{
368	55	if (!$request->hasHeader('Authorization')) {
369	48	return [null, null];
370		}
371
372	7	$header = $request->getHeader('Authorization')[0];
373	7	if (\strpos($header, 'Basic ') !== 0) {
374	1	return [null, null];
375		}
376
377	6	if (!($decoded = \base64_decode(\substr($header, 6)))) {
378	1	return [null, null];
379		}
380
381	5	if (\strpos($decoded, ':') === false) {
382	2	return [null, null]; // HTTP Basic header without colon isn't valid
383		}
384
385	3	return \explode(':', $decoded, 2);
386		}
387
388		/**
389		* Retrieve query string parameter.
390		*
391		* @param string $parameter
392		* @param ServerRequestInterface $request
393		* @param mixed $default
394		*
395		* @return null\|string
396		*/
397	23	protected function getQueryStringParameter($parameter, ServerRequestInterface $request, $default = null)
398		{
399	23	return isset($request->getQueryParams()[$parameter]) ? $request->getQueryParams()[$parameter] : $default;
400		}
401
402		/**
403		* Retrieve cookie parameter.
404		*
405		* @param string $parameter
406		* @param ServerRequestInterface $request
407		* @param mixed $default
408		*
409		* @return null\|string
410		*/
411	1	protected function getCookieParameter($parameter, ServerRequestInterface $request, $default = null)
412		{
413	1	return isset($request->getCookieParams()[$parameter]) ? $request->getCookieParams()[$parameter] : $default;
414		}
415
416		/**
417		* Retrieve server parameter.
418		*
419		* @param string $parameter
420		* @param ServerRequestInterface $request
421		* @param mixed $default
422		*
423		* @return null\|string
424		*/
425	22	protected function getServerParameter($parameter, ServerRequestInterface $request, $default = null)
426		{
427	22	return isset($request->getServerParams()[$parameter]) ? $request->getServerParams()[$parameter] : $default;
428		}
429
430		/**
431		* Issue an access token.
432		*
433		* @param DateInterval $accessTokenTTL
434		* @param ClientEntityInterface $client
435		* @param string\|null $userIdentifier
436		* @param ScopeEntityInterface[] $scopes
437		* @param ClaimEntityInterface[] $claims
438		*
439		* @throws OAuthServerException
440		* @throws UniqueTokenIdentifierConstraintViolationException
441		*
442		* @return AccessTokenEntityInterface
443		*/
444	22	protected function issueAccessToken(
445		DateInterval $accessTokenTTL,
446		ClientEntityInterface $client,
447		$userIdentifier,
448		array $scopes = [],
449		array $claims = []
450		) {
451	22	$maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;
452
453	22	$accessToken = $this->accessTokenRepository->getNewToken($client, $scopes, $userIdentifier);
454	22	$accessToken->setExpiryDateTime((new DateTimeImmutable())->add($accessTokenTTL));
455	22	$accessToken->setPrivateKey($this->privateKey);
456	22	foreach ($claims as $claim){
457		$accessToken->addClaim($claim);
458		}
459
460	22	while ($maxGenerationAttempts-- > 0) {
461	22	$accessToken->setIdentifier($this->generateUniqueIdentifier());
462		try {
463	22	$this->accessTokenRepository->persistNewAccessToken($accessToken);
464
465	20	return $accessToken;
466	2	} catch (UniqueTokenIdentifierConstraintViolationException $e) {
467	1	if ($maxGenerationAttempts === 0) {
468	1	throw $e;
469		}
470		}
471		}
472		}
473
474		/**
475		* Issue an auth code.
476		*
477		* @param DateInterval $authCodeTTL
478		* @param ClientEntityInterface $client
479		* @param string $userIdentifier
480		* @param string\|null $redirectUri
481		* @param ScopeEntityInterface[] $scopes
482		*
483		* @throws OAuthServerException
484		* @throws UniqueTokenIdentifierConstraintViolationException
485		*
486		* @return AuthCodeEntityInterface
487		*/
488	6	protected function issueAuthCode(
489		DateInterval $authCodeTTL,
490		ClientEntityInterface $client,
491		$userIdentifier,
492		$redirectUri,
493		array $scopes = []
494		) {
495	6	$maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;
496
497	6	$authCode = $this->authCodeRepository->getNewAuthCode();
498	6	$authCode->setExpiryDateTime((new DateTimeImmutable())->add($authCodeTTL));
499	6	$authCode->setClient($client);
500	6	$authCode->setUserIdentifier($userIdentifier);
501
502	6	if ($redirectUri !== null) {
503	1	$authCode->setRedirectUri($redirectUri);
504		}
505
506	6	foreach ($scopes as $scope) {
507	1	$authCode->addScope($scope);
508		}
509
510	6	while ($maxGenerationAttempts-- > 0) {
511	6	$authCode->setIdentifier($this->generateUniqueIdentifier());
512		try {
513	6	$this->authCodeRepository->persistNewAuthCode($authCode);
514
515	4	return $authCode;
516	2	} catch (UniqueTokenIdentifierConstraintViolationException $e) {
517	1	if ($maxGenerationAttempts === 0) {
518	1	throw $e;
519		}
520		}
521		}
522		}
523
524		/**
525		* @param AccessTokenEntityInterface $accessToken
526		*
527		* @throws OAuthServerException
528		* @throws UniqueTokenIdentifierConstraintViolationException
529		*
530		* @return RefreshTokenEntityInterface\|null
531		*/
532	16	protected function issueRefreshToken(AccessTokenEntityInterface $accessToken)
533		{
534	16	$refreshToken = $this->refreshTokenRepository->getNewRefreshToken();
535
536	16	if ($refreshToken === null) {
537	4	return null;
538		}
539
540	12	$refreshToken->setExpiryDateTime((new DateTimeImmutable())->add($this->refreshTokenTTL));
541	12	$refreshToken->setAccessToken($accessToken);
542
543	12	$maxGenerationAttempts = self::MAX_RANDOM_TOKEN_GENERATION_ATTEMPTS;
544
545	12	while ($maxGenerationAttempts-- > 0) {
546	12	$refreshToken->setIdentifier($this->generateUniqueIdentifier());
547		try {
548	12	$this->refreshTokenRepository->persistNewRefreshToken($refreshToken);
549
550	10	return $refreshToken;
551	2	} catch (UniqueTokenIdentifierConstraintViolationException $e) {
552	1	if ($maxGenerationAttempts === 0) {
553	1	throw $e;
554		}
555		}
556		}
557		}
558
559		/**
560		* Generate a new unique identifier.
561		*
562		* @param int $length
563		*
564		* @throws OAuthServerException
565		*
566		* @return string
567		*/
568	30	protected function generateUniqueIdentifier($length = 40)
569		{
570		try {
571	30	return \bin2hex(\random_bytes($length));
572		// @codeCoverageIgnoreStart
573		} catch (TypeError $e) {
574		throw OAuthServerException::serverError('An unexpected error has occurred', $e);
575		} catch (Error $e) {
576		throw OAuthServerException::serverError('An unexpected error has occurred', $e);
577		} catch (Exception $e) {
578		// If you get this message, the CSPRNG failed hard.
579		throw OAuthServerException::serverError('Could not generate a random string', $e);
580		}
581		// @codeCoverageIgnoreEnd
582		}
583
584		/**
585		* {@inheritdoc}
586		*/
587	5	public function canRespondToAccessTokenRequest(ServerRequestInterface $request)
588		{
589	5	$requestParameters = (array) $request->getParsedBody();
590
591		return (
592	5	\array_key_exists('grant_type', $requestParameters)
593	5	&& $requestParameters['grant_type'] === $this->getIdentifier()
594		);
595		}
596
597		/**
598		* {@inheritdoc}
599		*/
600	1	public function canRespondToAuthorizationRequest(ServerRequestInterface $request)
601		{
602	1	return false;
603		}
604
605		/**
606		* {@inheritdoc}
607		*/
608	1	public function validateAuthorizationRequest(ServerRequestInterface $request)
609		{
610	1	throw new LogicException('This grant cannot validate an authorization request');
611		}
612
613		/**
614		* {@inheritdoc}
615		*/
616	1	public function completeAuthorizationRequest(AuthorizationRequest $authorizationRequest)
617		{
618	1	throw new LogicException('This grant cannot complete an authorization request');
619		}
620		}
621

thephpleague / oauth2-server

Pull Request — master (#1122)

AbstractGrant::getClientCredentials() A

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