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

Completed

Pull Request — master (#1122)

by Sebastian

created 2020-07-16 22:17 UTC

AuthCodeGrant::respondToAccessTokenRequest() C

↳ Parent: AuthCodeGrant

Complexity

Conditions	12
Paths	40

Size

Total Lines	95
Code Lines	50

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	41
CRAP Score	12.627

Importance

Changes	7
Bugs	0	Features	1

Metric	Value
cc	12
eloc	50
nc	40
nop	3
dl	0
loc	95
ccs	41
cts	49
cp	0.8367
crap	12.627
rs	6.9666
c	7
b	0
f	1

How to fix Long Method Complexity

<?php
/**
 * @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 Exception;
use League\OAuth2\Server\CodeChallengeVerifiers\CodeChallengeVerifierInterface;
use League\OAuth2\Server\CodeChallengeVerifiers\PlainVerifier;
use League\OAuth2\Server\CodeChallengeVerifiers\S256Verifier;
use League\OAuth2\Server\Entities\ClientEntityInterface;
use League\OAuth2\Server\Entities\UserEntityInterface;
use League\OAuth2\Server\Exception\OAuthServerException;
use League\OAuth2\Server\Repositories\AuthCodeRepositoryInterface;
use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
use League\OAuth2\Server\RequestEvent;
use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
use League\OAuth2\Server\ResponseTypes\RedirectResponse;
use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface;
use LogicException;
use Psr\Http\Message\ServerRequestInterface;
use stdClass;

class AuthCodeGrant extends AbstractAuthorizeGrant
{
    /**
     * @var DateInterval
     */
    private $authCodeTTL;

    /**
     * @var bool
     */
    private $requireCodeChallengeForPublicClients = true;

    /**
     * @var CodeChallengeVerifierInterface[]
     */
    private $codeChallengeVerifiers = [];

    /**
     * @param AuthCodeRepositoryInterface     $authCodeRepository
     * @param RefreshTokenRepositoryInterface $refreshTokenRepository
     * @param DateInterval                    $authCodeTTL
     *
     * @throws Exception
     */
    public function __construct(
        AuthCodeRepositoryInterface $authCodeRepository,
        RefreshTokenRepositoryInterface $refreshTokenRepository,
        DateInterval $authCodeTTL
    ) {
        $this->setAuthCodeRepository($authCodeRepository);
        $this->setRefreshTokenRepository($refreshTokenRepository);
        $this->authCodeTTL = $authCodeTTL;
        $this->refreshTokenTTL = new DateInterval('P1M');

        if (\in_array('sha256', \hash_algos(), true)) {
            $s256Verifier = new S256Verifier();
            $this->codeChallengeVerifiers[$s256Verifier->getMethod()] = $s256Verifier;
        }

        $plainVerifier = new PlainVerifier();
        $this->codeChallengeVerifiers[$plainVerifier->getMethod()] = $plainVerifier;
    }

    /**
     * Disable the requirement for a code challenge for public clients.
     */
    public function disableRequireCodeChallengeForPublicClients()
    {
        $this->requireCodeChallengeForPublicClients = false;
    }

    /**
     * Respond to an access token request.
     *
     * @param ServerRequestInterface $request
     * @param ResponseTypeInterface  $responseType
     * @param DateInterval           $accessTokenTTL
     *
     * @throws OAuthServerException
     *
     * @return ResponseTypeInterface
     */
    public function respondToAccessTokenRequest(
        ServerRequestInterface $request,
        ResponseTypeInterface $responseType,
        DateInterval $accessTokenTTL
    ) {
        list($clientId) = $this->getClientCredentials($request);

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

        // Only validate the client if it is confidential
        if ($client->isConfidential()) {
            $this->validateClient($request);
        }

        $encryptedAuthCode = $this->getRequestParameter('code', $request, null);

        if ($encryptedAuthCode === null) {
            throw OAuthServerException::invalidRequest('code');
        }

        try {
            $authCodePayload = \json_decode($this->decrypt($encryptedAuthCode));

            $this->validateAuthorizationCode($authCodePayload, $client, $request);

            $scopes = $this->scopeRepository->finalizeScopes(
                $this->validateScopes($authCodePayload->scopes),
                $this->getIdentifier(),
                $client,
                $authCodePayload->user_id
            );
        } catch (LogicException $e) {
            throw OAuthServerException::invalidRequest('code', 'Cannot decrypt the authorization code', $e);
        }

        // Validate code challenge
        if (!empty($authCodePayload->code_challenge)) {
            $codeVerifier = $this->getRequestParameter('code_verifier', $request, null);

            if ($codeVerifier === null) {
                throw OAuthServerException::invalidRequest('code_verifier');
            }

            // Validate code_verifier according to RFC-7636
            // @see: https://tools.ietf.org/html/rfc7636#section-4.1
            if (\preg_match('/^[A-Za-z0-9-._~]{43,128}$/', $codeVerifier) !== 1) {
                throw OAuthServerException::invalidRequest(
                    'code_verifier',
                    'Code Verifier must follow the specifications of RFC-7636.'
                );
            }

            if (\property_exists($authCodePayload, 'code_challenge_method')) {
                if (isset($this->codeChallengeVerifiers[$authCodePayload->code_challenge_method])) {
                    $codeChallengeVerifier = $this->codeChallengeVerifiers[$authCodePayload->code_challenge_method];

                    if ($codeChallengeVerifier->verifyCodeChallenge($codeVerifier, $authCodePayload->code_challenge) === false) {
                        throw OAuthServerException::invalidGrant('Failed to verify `code_verifier`.');
                    }
                } else {
                    throw OAuthServerException::serverError(
                        \sprintf(
                            'Unsupported code challenge method `%s`',
                            $authCodePayload->code_challenge_method
                        )
                    );
                }
            }
        }
        $privateClaims = [];
        if ($this->claimRepository) {
            $privateClaims = $this->claimRepository->getClaims(
                $this->getIdentifier(),
                $client,
                $authCodePayload->user_id
            );
        }

        // Issue and persist new access token
        $accessToken = $this->issueAccessToken($accessTokenTTL, $client, $authCodePayload->user_id, $scopes, $privateClaims);
        $this->getEmitter()->emit(new RequestEvent(RequestEvent::ACCESS_TOKEN_ISSUED, $request));
        $responseType->setAccessToken($accessToken);

        // Issue and persist new refresh token if given
        $refreshToken = $this->issueRefreshToken($accessToken);

        if ($refreshToken !== null) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::REFRESH_TOKEN_ISSUED, $request));
            $responseType->setRefreshToken($refreshToken);
        }

        // Revoke used auth code
        $this->authCodeRepository->revokeAuthCode($authCodePayload->auth_code_id);

        return $responseType;
    }

    /**
     * Validate the authorization code.
     *
     * @param stdClass               $authCodePayload
     * @param ClientEntityInterface  $client
     * @param ServerRequestInterface $request
     */
    private function validateAuthorizationCode(
        $authCodePayload,
        ClientEntityInterface $client,
        ServerRequestInterface $request
    ) {
        if (!\property_exists($authCodePayload, 'auth_code_id')) {
            throw OAuthServerException::invalidRequest('code', 'Authorization code malformed');
        }

        if (\time() > $authCodePayload->expire_time) {
            throw OAuthServerException::invalidRequest('code', 'Authorization code has expired');
        }

        if ($this->authCodeRepository->isAuthCodeRevoked($authCodePayload->auth_code_id) === true) {
            throw OAuthServerException::invalidRequest('code', 'Authorization code has been revoked');
        }

        if ($authCodePayload->client_id !== $client->getIdentifier()) {
            throw OAuthServerException::invalidRequest('code', 'Authorization code was not issued to this client');
        }

        // The redirect URI is required in this request
        $redirectUri = $this->getRequestParameter('redirect_uri', $request, null);
        if (empty($authCodePayload->redirect_uri) === false && $redirectUri === null) {
            throw OAuthServerException::invalidRequest('redirect_uri');
        }

        if ($authCodePayload->redirect_uri !== $redirectUri) {
            throw OAuthServerException::invalidRequest('redirect_uri', 'Invalid redirect URI');
        }
    }

    /**
     * Return the grant identifier that can be used in matching up requests.
     *
     * @return string
     */
    public function getIdentifier()
    {
        return 'authorization_code';
    }

    /**
     * {@inheritdoc}
     */
    public function canRespondToAuthorizationRequest(ServerRequestInterface $request)
    {
        return (
            \array_key_exists('response_type', $request->getQueryParams())
            && $request->getQueryParams()['response_type'] === 'code'
            && isset($request->getQueryParams()['client_id'])
        );
    }

    /**
     * {@inheritdoc}
     */
    public function validateAuthorizationRequest(ServerRequestInterface $request)
    {
        $clientId = $this->getQueryStringParameter(
            'client_id',
            $request,
            $this->getServerParameter('PHP_AUTH_USER', $request)
        );

        if ($clientId === null) {
            throw OAuthServerException::invalidRequest('client_id');
        }

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

        $redirectUri = $this->getQueryStringParameter('redirect_uri', $request);

        if ($redirectUri !== null) {
            $this->validateRedirectUri($redirectUri, $client, $request);
        } elseif (empty($client->getRedirectUri()) ||
            (\is_array($client->getRedirectUri()) && \count($client->getRedirectUri()) !== 1)) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
            throw OAuthServerException::invalidClient($request);
        }

        $defaultClientRedirectUri = \is_array($client->getRedirectUri())
            ? $client->getRedirectUri()[0]
            : $client->getRedirectUri();

        $scopes = $this->validateScopes(
            $this->getQueryStringParameter('scope', $request, $this->defaultScope),
            $redirectUri ?? $defaultClientRedirectUri
        );

        $stateParameter = $this->getQueryStringParameter('state', $request);

        $authorizationRequest = new AuthorizationRequest();
        $authorizationRequest->setGrantTypeId($this->getIdentifier());
        $authorizationRequest->setClient($client);
        $authorizationRequest->setRedirectUri($redirectUri);

        if ($stateParameter !== null) {
            $authorizationRequest->setState($stateParameter);
        }

        $authorizationRequest->setScopes($scopes);

        $codeChallenge = $this->getQueryStringParameter('code_challenge', $request);

        if ($codeChallenge !== null) {
            $codeChallengeMethod = $this->getQueryStringParameter('code_challenge_method', $request, 'plain');

            if (\array_key_exists($codeChallengeMethod, $this->codeChallengeVerifiers) === false) {
                throw OAuthServerException::invalidRequest(
                    'code_challenge_method',
                    'Code challenge method must be one of ' . \implode(', ', \array_map(
                        function ($method) {
                            return '`' . $method . '`';
                        },
                        \array_keys($this->codeChallengeVerifiers)
                    ))
                );
            }

            // Validate code_challenge according to RFC-7636
            // @see: https://tools.ietf.org/html/rfc7636#section-4.2
            if (\preg_match('/^[A-Za-z0-9-._~]{43,128}$/', $codeChallenge) !== 1) {
                throw OAuthServerException::invalidRequest(
                    'code_challenged',
                    'Code challenge must follow the specifications of RFC-7636.'
                );
            }

            $authorizationRequest->setCodeChallenge($codeChallenge);
            $authorizationRequest->setCodeChallengeMethod($codeChallengeMethod);
        } elseif ($this->requireCodeChallengeForPublicClients && !$client->isConfidential()) {
            throw OAuthServerException::invalidRequest('code_challenge', 'Code challenge must be provided for public clients');
        }

        return $authorizationRequest;
    }

    /**
     * {@inheritdoc}
     */
    public function completeAuthorizationRequest(AuthorizationRequest $authorizationRequest)
    {
        if ($authorizationRequest->getUser() instanceof UserEntityInterface === false) {
            throw new LogicException('An instance of UserEntityInterface should be set on the AuthorizationRequest');
        }

        $finalRedirectUri = $authorizationRequest->getRedirectUri()
                          ?? $this->getClientRedirectUri($authorizationRequest);

        // The user approved the client, redirect them back with an auth code
        if ($authorizationRequest->isAuthorizationApproved() === true) {
            $authCode = $this->issueAuthCode(
                $this->authCodeTTL,
                $authorizationRequest->getClient(),
                $authorizationRequest->getUser()->getIdentifier(),
                $authorizationRequest->getRedirectUri(),
                $authorizationRequest->getScopes()
            );

            $payload = [
                'client_id'             => $authCode->getClient()->getIdentifier(),
                'redirect_uri'          => $authCode->getRedirectUri(),
                'auth_code_id'          => $authCode->getIdentifier(),
                'scopes'                => $authCode->getScopes(),
                'user_id'               => $authCode->getUserIdentifier(),
                'expire_time'           => (new DateTimeImmutable())->add($this->authCodeTTL)->getTimestamp(),
                'code_challenge'        => $authorizationRequest->getCodeChallenge(),
                'code_challenge_method' => $authorizationRequest->getCodeChallengeMethod(),
            ];

            $jsonPayload = \json_encode($payload);

            if ($jsonPayload === false) {
                throw new LogicException('An error was encountered when JSON encoding the authorization request response');
            }

            $response = new RedirectResponse();
            $response->setRedirectUri(
                $this->makeRedirectUri(
                    $finalRedirectUri,
                    [
                        'code'  => $this->encrypt($jsonPayload),
                        'state' => $authorizationRequest->getState(),
                    ]
                )
            );

            return $response;
        }

        // The user denied the client, redirect them back with an error
        throw OAuthServerException::accessDenied(
            'The user denied the request',
            $this->makeRedirectUri(
                $finalRedirectUri,
                [
                    'state' => $authorizationRequest->getState(),
                ]
            )
        );
    }

    /**
     * Get the client redirect URI if not set in the request.
     *
     * @param AuthorizationRequest $authorizationRequest
     *
     * @return string
     */
    private function getClientRedirectUri(AuthorizationRequest $authorizationRequest)
    {
        return \is_array($authorizationRequest->getClient()->getRedirectUri())
                ? $authorizationRequest->getClient()->getRedirectUri()[0]
                : $authorizationRequest->getClient()->getRedirectUri();
    }
}


1		<?php
2		/**
3		* @author Alex Bilbie <[email protected]>
4		* @copyright Copyright (c) Alex Bilbie
5		* @license http://mit-license.org/
6		*
7		* @link https://github.com/thephpleague/oauth2-server
8		*/
9
10		namespace League\OAuth2\Server\Grant;
11
12		use DateInterval;
13		use DateTimeImmutable;
14		use Exception;
15		use League\OAuth2\Server\CodeChallengeVerifiers\CodeChallengeVerifierInterface;
16		use League\OAuth2\Server\CodeChallengeVerifiers\PlainVerifier;
17		use League\OAuth2\Server\CodeChallengeVerifiers\S256Verifier;
18		use League\OAuth2\Server\Entities\ClientEntityInterface;
19		use League\OAuth2\Server\Entities\UserEntityInterface;
20		use League\OAuth2\Server\Exception\OAuthServerException;
21		use League\OAuth2\Server\Repositories\AuthCodeRepositoryInterface;
22		use League\OAuth2\Server\Repositories\RefreshTokenRepositoryInterface;
23		use League\OAuth2\Server\RequestEvent;
24		use League\OAuth2\Server\RequestTypes\AuthorizationRequest;
25		use League\OAuth2\Server\ResponseTypes\RedirectResponse;
26		use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface;
27		use LogicException;
28		use Psr\Http\Message\ServerRequestInterface;
29		use stdClass;
30
31		class AuthCodeGrant extends AbstractAuthorizeGrant
32		{
33		/**
34		* @var DateInterval
35		*/
36		private $authCodeTTL;
37
38		/**
39		* @var bool
40		*/
41		private $requireCodeChallengeForPublicClients = true;
42
43		/**
44		* @var CodeChallengeVerifierInterface[]
45		*/
46		private $codeChallengeVerifiers = [];
47
48		/**
49		* @param AuthCodeRepositoryInterface $authCodeRepository
50		* @param RefreshTokenRepositoryInterface $refreshTokenRepository
51		* @param DateInterval $authCodeTTL
52		*
53		* @throws Exception
54		*/
55	47	public function __construct(
56		AuthCodeRepositoryInterface $authCodeRepository,
57		RefreshTokenRepositoryInterface $refreshTokenRepository,
58		DateInterval $authCodeTTL
59		) {
60	47	$this->setAuthCodeRepository($authCodeRepository);
61	47	$this->setRefreshTokenRepository($refreshTokenRepository);
62	47	$this->authCodeTTL = $authCodeTTL;
63	47	$this->refreshTokenTTL = new DateInterval('P1M');
64
65	47	if (\in_array('sha256', \hash_algos(), true)) {
66	47	$s256Verifier = new S256Verifier();
67	47	$this->codeChallengeVerifiers[$s256Verifier->getMethod()] = $s256Verifier;
68		}
69
70	47	$plainVerifier = new PlainVerifier();
71	47	$this->codeChallengeVerifiers[$plainVerifier->getMethod()] = $plainVerifier;
72	47	}
73
74		/**
75		* Disable the requirement for a code challenge for public clients.
76		*/
77		public function disableRequireCodeChallengeForPublicClients()
78		{
79		$this->requireCodeChallengeForPublicClients = false;
80		}
81
82		/**
83		* Respond to an access token request.
84		*
85		* @param ServerRequestInterface $request
86		* @param ResponseTypeInterface $responseType
87		* @param DateInterval $accessTokenTTL
88		*
89		* @throws OAuthServerException
90		*
91		* @return ResponseTypeInterface
92		*/
93	22	public function respondToAccessTokenRequest(
94		ServerRequestInterface $request,
95		ResponseTypeInterface $responseType,
96		DateInterval $accessTokenTTL
97		) {
98	22	list($clientId) = $this->getClientCredentials($request);
99
100	22	$client = $this->getClientEntityOrFail($clientId, $request);
101
102		// Only validate the client if it is confidential
103	22	if ($client->isConfidential()) {
104	14	$this->validateClient($request);
105		}
106
107	22	$encryptedAuthCode = $this->getRequestParameter('code', $request, null);
108
109	22	if ($encryptedAuthCode === null) {
110	1	throw OAuthServerException::invalidRequest('code');
111		}
112
113		try {
114	21	$authCodePayload = \json_decode($this->decrypt($encryptedAuthCode));
115
116	20	$this->validateAuthorizationCode($authCodePayload, $client, $request);
117
118	14	$scopes = $this->scopeRepository->finalizeScopes(
119	14	$this->validateScopes($authCodePayload->scopes),
120	14	$this->getIdentifier(),
121	14	$client,
122	14	$authCodePayload->user_id
123		);
124	7	} catch (LogicException $e) {
125	1	throw OAuthServerException::invalidRequest('code', 'Cannot decrypt the authorization code', $e);
126		}
127
128		// Validate code challenge
129	14	if (!empty($authCodePayload->code_challenge)) {
130	7	$codeVerifier = $this->getRequestParameter('code_verifier', $request, null);
131
132	7	if ($codeVerifier === null) {
133	1	throw OAuthServerException::invalidRequest('code_verifier');
134		}
135
136		// Validate code_verifier according to RFC-7636
137		// @see: https://tools.ietf.org/html/rfc7636#section-4.1
138	6	if (\preg_match('/^[A-Za-z0-9-._~]{43,128}$/', $codeVerifier) !== 1) {
139	3	throw OAuthServerException::invalidRequest(
140	3	'code_verifier',
141	3	'Code Verifier must follow the specifications of RFC-7636.'
142		);
143		}
144
145	3	if (\property_exists($authCodePayload, 'code_challenge_method')) {
146	3	if (isset($this->codeChallengeVerifiers[$authCodePayload->code_challenge_method])) {
147	3	$codeChallengeVerifier = $this->codeChallengeVerifiers[$authCodePayload->code_challenge_method];
148
149	3	if ($codeChallengeVerifier->verifyCodeChallenge($codeVerifier, $authCodePayload->code_challenge) === false) {
150	3	throw OAuthServerException::invalidGrant('Failed to verify `code_verifier`.');
151		}
152		} else {
153		throw OAuthServerException::serverError(
154		\sprintf(
155		'Unsupported code challenge method `%s`',
156		$authCodePayload->code_challenge_method
157		)
158		);
159		}
160		}
161		}
162	9	$privateClaims = [];
163	9	if ($this->claimRepository) {
164		$privateClaims = $this->claimRepository->getClaims(
165		$this->getIdentifier(),
166		$client,
167		$authCodePayload->user_id
168		);
169		}
170
171		// Issue and persist new access token
172	9	$accessToken = $this->issueAccessToken($accessTokenTTL, $client, $authCodePayload->user_id, $scopes, $privateClaims);
173	9	$this->getEmitter()->emit(new RequestEvent(RequestEvent::ACCESS_TOKEN_ISSUED, $request));
174	9	$responseType->setAccessToken($accessToken);
175
176		// Issue and persist new refresh token if given
177	9	$refreshToken = $this->issueRefreshToken($accessToken);
178
179	7	if ($refreshToken !== null) {
180	6	$this->getEmitter()->emit(new RequestEvent(RequestEvent::REFRESH_TOKEN_ISSUED, $request));
181	6	$responseType->setRefreshToken($refreshToken);
182		}
183
184		// Revoke used auth code
185	7	$this->authCodeRepository->revokeAuthCode($authCodePayload->auth_code_id);
186
187	7	return $responseType;
188		}
189
190		/**
191		* Validate the authorization code.
192		*
193		* @param stdClass $authCodePayload
194		* @param ClientEntityInterface $client
195		* @param ServerRequestInterface $request
196		*/
197	20	private function validateAuthorizationCode(
198		$authCodePayload,
199		ClientEntityInterface $client,
200		ServerRequestInterface $request
201		) {
202	20	if (!\property_exists($authCodePayload, 'auth_code_id')) {
203	1	throw OAuthServerException::invalidRequest('code', 'Authorization code malformed');
204		}
205
206	19	if (\time() > $authCodePayload->expire_time) {
207	1	throw OAuthServerException::invalidRequest('code', 'Authorization code has expired');
208		}
209
210	18	if ($this->authCodeRepository->isAuthCodeRevoked($authCodePayload->auth_code_id) === true) {
211	1	throw OAuthServerException::invalidRequest('code', 'Authorization code has been revoked');
212		}
213
214	17	if ($authCodePayload->client_id !== $client->getIdentifier()) {
215	1	throw OAuthServerException::invalidRequest('code', 'Authorization code was not issued to this client');
216		}
217
218		// The redirect URI is required in this request
219	16	$redirectUri = $this->getRequestParameter('redirect_uri', $request, null);
220	16	if (empty($authCodePayload->redirect_uri) === false && $redirectUri === null) {
221	1	throw OAuthServerException::invalidRequest('redirect_uri');
222		}
223
224	15	if ($authCodePayload->redirect_uri !== $redirectUri) {
225	1	throw OAuthServerException::invalidRequest('redirect_uri', 'Invalid redirect URI');
226		}
227	14	}
228
229		/**
230		* Return the grant identifier that can be used in matching up requests.
231		*
232		* @return string
233		*/
234	33	public function getIdentifier()
235		{
236	33	return 'authorization_code';
237		}
238
239		/**
240		* {@inheritdoc}
241		*/
242	3	public function canRespondToAuthorizationRequest(ServerRequestInterface $request)
243		{
244		return (
245	3	\array_key_exists('response_type', $request->getQueryParams())
246	3	&& $request->getQueryParams()['response_type'] === 'code'
247	3	&& isset($request->getQueryParams()['client_id'])
248		);
249		}
250
251		/**
252		* {@inheritdoc}
253		*/
254	16	public function validateAuthorizationRequest(ServerRequestInterface $request)
255		{
256	16	$clientId = $this->getQueryStringParameter(
257	16	'client_id',
258	16	$request,
259	16	$this->getServerParameter('PHP_AUTH_USER', $request)
260		);
261
262	16	if ($clientId === null) {
263	1	throw OAuthServerException::invalidRequest('client_id');
264		}
265
266	15	$client = $this->getClientEntityOrFail($clientId, $request);
267
268	14	$redirectUri = $this->getQueryStringParameter('redirect_uri', $request);
269
270	14	if ($redirectUri !== null) {
271	11	$this->validateRedirectUri($redirectUri, $client, $request);
272	3	} elseif (empty($client->getRedirectUri()) \|\|
273	3	(\is_array($client->getRedirectUri()) && \count($client->getRedirectUri()) !== 1)) {
274	1	$this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));
275	1	throw OAuthServerException::invalidClient($request);
276		}
277
278	11	$defaultClientRedirectUri = \is_array($client->getRedirectUri())
279	2	? $client->getRedirectUri()[0]
280	11	: $client->getRedirectUri();
281
282	11	$scopes = $this->validateScopes(
283	11	$this->getQueryStringParameter('scope', $request, $this->defaultScope),
284	11	$redirectUri ?? $defaultClientRedirectUri
285		);
286
287	10	$stateParameter = $this->getQueryStringParameter('state', $request);
288
289	10	$authorizationRequest = new AuthorizationRequest();
290	10	$authorizationRequest->setGrantTypeId($this->getIdentifier());
291	10	$authorizationRequest->setClient($client);
292	10	$authorizationRequest->setRedirectUri($redirectUri);
293
294	10	if ($stateParameter !== null) {
295		$authorizationRequest->setState($stateParameter);
296		}
297
298	10	$authorizationRequest->setScopes($scopes);
299
300	10	$codeChallenge = $this->getQueryStringParameter('code_challenge', $request);
301
302	10	if ($codeChallenge !== null) {
303	5	$codeChallengeMethod = $this->getQueryStringParameter('code_challenge_method', $request, 'plain');
304
305	5	if (\array_key_exists($codeChallengeMethod, $this->codeChallengeVerifiers) === false) {
306	1	throw OAuthServerException::invalidRequest(
307	1	'code_challenge_method',
308	1	'Code challenge method must be one of ' . \implode(', ', \array_map(
309		function ($method) {
310	1	return '`' . $method . '`';
311	1	},
312	1	\array_keys($this->codeChallengeVerifiers)
313		))
314		);
315		}
316
317		// Validate code_challenge according to RFC-7636
318		// @see: https://tools.ietf.org/html/rfc7636#section-4.2
319	4	if (\preg_match('/^[A-Za-z0-9-._~]{43,128}$/', $codeChallenge) !== 1) {
320	3	throw OAuthServerException::invalidRequest(
321	3	'code_challenged',
322	3	'Code challenge must follow the specifications of RFC-7636.'
323		);
324		}
325
326	1	$authorizationRequest->setCodeChallenge($codeChallenge);
327	1	$authorizationRequest->setCodeChallengeMethod($codeChallengeMethod);
328	5	} elseif ($this->requireCodeChallengeForPublicClients && !$client->isConfidential()) {
329	1	throw OAuthServerException::invalidRequest('code_challenge', 'Code challenge must be provided for public clients');
330		}
331
332	5	return $authorizationRequest;
333		}
334
335		/**
336		* {@inheritdoc}
337		*/
338	7	public function completeAuthorizationRequest(AuthorizationRequest $authorizationRequest)
339		{
340	7	if ($authorizationRequest->getUser() instanceof UserEntityInterface === false) {
341	1	throw new LogicException('An instance of UserEntityInterface should be set on the AuthorizationRequest');
342		}
343
344	6	$finalRedirectUri = $authorizationRequest->getRedirectUri()
345	6	?? $this->getClientRedirectUri($authorizationRequest);
346
347		// The user approved the client, redirect them back with an auth code
348	6	if ($authorizationRequest->isAuthorizationApproved() === true) {
349	5	$authCode = $this->issueAuthCode(
350	5	$this->authCodeTTL,
351	5	$authorizationRequest->getClient(),
352	5	$authorizationRequest->getUser()->getIdentifier(),
353	5	$authorizationRequest->getRedirectUri(),
354	5	$authorizationRequest->getScopes()
355		);
356
357		$payload = [
358	3	'client_id' => $authCode->getClient()->getIdentifier(),
359	3	'redirect_uri' => $authCode->getRedirectUri(),
360	3	'auth_code_id' => $authCode->getIdentifier(),
361	3	'scopes' => $authCode->getScopes(),
362	3	'user_id' => $authCode->getUserIdentifier(),
363	3	'expire_time' => (new DateTimeImmutable())->add($this->authCodeTTL)->getTimestamp(),
364	3	'code_challenge' => $authorizationRequest->getCodeChallenge(),
365	3	'code_challenge_method' => $authorizationRequest->getCodeChallengeMethod(),
366		];
367
368	3	$jsonPayload = \json_encode($payload);
369
370	3	if ($jsonPayload === false) {
371		throw new LogicException('An error was encountered when JSON encoding the authorization request response');
372		}
373
374	3	$response = new RedirectResponse();
375	3	$response->setRedirectUri(
376	3	$this->makeRedirectUri(
377	3	$finalRedirectUri,
378		[
379	3	'code' => $this->encrypt($jsonPayload),
380	3	'state' => $authorizationRequest->getState(),
381		]
382		)
383		);
384
385	3	return $response;
386		}
387
388		// The user denied the client, redirect them back with an error
389	1	throw OAuthServerException::accessDenied(
390	1	'The user denied the request',
391	1	$this->makeRedirectUri(
392	1	$finalRedirectUri,
393		[
394	1	'state' => $authorizationRequest->getState(),
395		]
396		)
397		);
398		}
399
400		/**
401		* Get the client redirect URI if not set in the request.
402		*
403		* @param AuthorizationRequest $authorizationRequest
404		*
405		* @return string
406		*/
407	6	private function getClientRedirectUri(AuthorizationRequest $authorizationRequest)
408		{
409	6	return \is_array($authorizationRequest->getClient()->getRedirectUri())
410		? $authorizationRequest->getClient()->getRedirectUri()[0]
411	6	: $authorizationRequest->getClient()->getRedirectUri();
412		}
413		}
414

thephpleague / oauth2-server

Pull Request — master (#1122)

AuthCodeGrant::respondToAccessTokenRequest() C

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