AuthCodeGrant::validateAuthorizationRequest() - Code Metrics - Inspection of "Merge pull request #1420 from hafezdivandari/alway..." - thephpleague/oauth2-server - Measure and Improve Code Quality continuously with Scrutinizer

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Push — master ( d4ef04...f654cb )

by Andrew

created 2025-02-06 22:17 UTC

AuthCodeGrant::validateAuthorizationRequest() C

↳ Parent: AuthCodeGrant

Complexity

Conditions	14
Paths	26

Size

Total Lines	88
Code Lines	51

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	49
CRAP Score	14.9544

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	14
eloc	51
c	1
b	0
f	0
nc	26
nop	1
dl	0
loc	88
ccs	49
cts	59
cp	0.8305
crap	14.9544
rs	6.2666

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
 */

declare(strict_types=1);

namespace League\OAuth2\Server\Grant;

use DateInterval;
use DateTimeImmutable;
use Exception;
use InvalidArgumentException;
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\RequestAccessTokenEvent;
use League\OAuth2\Server\RequestEvent;
use League\OAuth2\Server\RequestRefreshTokenEvent;
use League\OAuth2\Server\RequestTypes\AuthorizationRequestInterface;
use League\OAuth2\Server\ResponseTypes\RedirectResponse;
use League\OAuth2\Server\ResponseTypes\ResponseTypeInterface;
use LogicException;
use Psr\Http\Message\ServerRequestInterface;
use stdClass;

use function array_key_exists;
use function array_keys;
use function array_map;
use function count;
use function hash_algos;
use function implode;
use function in_array;
use function is_array;
use function json_decode;
use function json_encode;
use function preg_match;
use function property_exists;
use function sprintf;
use function time;

class AuthCodeGrant extends AbstractAuthorizeGrant
{
    private bool $requireCodeChallengeForPublicClients = true;

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

    /**
     * @throws Exception
     */
    public function __construct(
        AuthCodeRepositoryInterface $authCodeRepository,
        RefreshTokenRepositoryInterface $refreshTokenRepository,
        private DateInterval $authCodeTTL
    ) {
        $this->setAuthCodeRepository($authCodeRepository);
        $this->setRefreshTokenRepository($refreshTokenRepository);
        $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(): void
    {
        $this->requireCodeChallengeForPublicClients = false;
    }

    /**
     * Respond to an access token request.
     *
     * @throws OAuthServerException
     */
    public function respondToAccessTokenRequest(
        ServerRequestInterface $request,
        ResponseTypeInterface $responseType,
        DateInterval $accessTokenTTL
    ): ResponseTypeInterface {
        $client = $this->validateClient($request);

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

        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,
                $authCodePayload->auth_code_id
            );
        } catch (InvalidArgumentException $e) {
            throw OAuthServerException::invalidGrant('Cannot validate the provided authorization code');
        } catch (LogicException $e) {
            throw OAuthServerException::invalidRequest('code', 'Issue decrypting the authorization code', $e);
        }

        $codeVerifier = $this->getRequestParameter('code_verifier', $request);

        // If a code challenge isn't present but a code verifier is, reject the request to block PKCE downgrade attack
        if (!isset($authCodePayload->code_challenge) && $codeVerifier !== null) {
            throw OAuthServerException::invalidRequest(
                'code_challenge',
                'code_verifier received when no code_challenge is present'
            );
        }

        if (isset($authCodePayload->code_challenge)) {
            $this->validateCodeChallenge($authCodePayload, $codeVerifier);
        }

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

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

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

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

        return $responseType;
    }

    private function validateCodeChallenge(object $authCodePayload, ?string $codeVerifier): void
    {
        if ($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 (!isset($authCodePayload->code_challenge) || $codeChallengeVerifier->verifyCodeChallenge($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
                    )
                );
            }
        }
    }

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

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

        if ($this->authCodeRepository->isAuthCodeRevoked($authCodePayload->auth_code_id) === true) {
            throw OAuthServerException::invalidGrant('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 if it was specified
        // in the authorization request
        $redirectUri = $this->getRequestParameter('redirect_uri', $request);
        if ($authCodePayload->redirect_uri !== null && $redirectUri === null) {
            throw OAuthServerException::invalidRequest('redirect_uri');
        }

        // If a redirect URI has been provided ensure it matches the stored redirect URI
        if ($redirectUri !== null && $authCodePayload->redirect_uri !== $redirectUri) {
            throw OAuthServerException::invalidRequest('redirect_uri', 'Invalid redirect URI');
        }
    }

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

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

    /**
     * {@inheritdoc}
     */
    public function validateAuthorizationRequest(ServerRequestInterface $request): AuthorizationRequestInterface
    {
        $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 (
            $client->getRedirectUri() === '' ||
            (is_array($client->getRedirectUri()) && count($client->getRedirectUri()) !== 1)
        ) {
            $this->getEmitter()->emit(new RequestEvent(RequestEvent::CLIENT_AUTHENTICATION_FAILED, $request));

            throw OAuthServerException::invalidClient($request);
        }

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

        $scopes = $this->validateScopes(
            $this->getQueryStringParameter('scope', $request, $this->defaultScope),
            $this->makeRedirectUri(
                $redirectUri ?? $this->getClientRedirectUri($client),
                $stateParameter !== null ? ['state' => $stateParameter] : []
            )
        );

        $authorizationRequest = $this->createAuthorizationRequest();
        $authorizationRequest->setGrantTypeId($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 ($codeChallengeMethod === null) {
                throw OAuthServerException::invalidRequest(
                    'code_challenge_method',
                    'Code challenge method must be provided when `code_challenge` is set.'
                );
            }

            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_challenge',
                    '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(AuthorizationRequestInterface $authorizationRequest): ResponseTypeInterface
    {
        if ($authorizationRequest->getUser() instanceof UserEntityInterface === false) {
            throw new LogicException('An instance of UserEntityInterface should be set on the AuthorizationRequest');
        }

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

        // 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(),
                ]
            )
        );
    }
}


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

thephpleague / oauth2-server

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AuthCodeGrant::validateAuthorizationRequest() C

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