69 lines
3.0 KiB
PHP
69 lines
3.0 KiB
PHP
<?php namespace OAuth2\Factories;
|
|
/**
|
|
* Copyright 2020 OpenStack Foundation
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
**/
|
|
use OAuth2\Exceptions\InvalidOAuth2PKCERequest;
|
|
use OAuth2\GrantTypes\Strategies\PKCEPlainValidator;
|
|
use OAuth2\GrantTypes\Strategies\PKCES256Validator;
|
|
use OAuth2\Models\AuthorizationCode;
|
|
use OAuth2\OAuth2Protocol;
|
|
use OAuth2\Requests\OAuth2AccessTokenRequestAuthCode;
|
|
use OAuth2\Strategies\IPKCEValidationMethod;
|
|
/**
|
|
* Class OAuth2PKCEValidationMethodFactory
|
|
* @package OAuth2\Factories
|
|
*/
|
|
final class OAuth2PKCEValidationMethodFactory
|
|
{
|
|
/**
|
|
* @param AuthorizationCode $auth_code
|
|
* @param OAuth2AccessTokenRequestAuthCode $request
|
|
* @return IPKCEValidationMethod
|
|
* @throws InvalidOAuth2PKCERequest
|
|
*/
|
|
static public function build(AuthorizationCode $auth_code, OAuth2AccessTokenRequestAuthCode $request)
|
|
:IPKCEValidationMethod {
|
|
|
|
$code_challenge = $auth_code->getCodeChallenge();
|
|
$code_challenge_method = $auth_code->getCodeChallengeMethod();
|
|
|
|
if(empty($code_challenge) || empty($code_challenge_method)){
|
|
throw new InvalidOAuth2PKCERequest(sprintf("%s or %s missing", OAuth2Protocol::PKCE_CodeChallenge, OAuth2Protocol::PKCE_CodeChallengeMethod));
|
|
}
|
|
|
|
/**
|
|
* code_verifier = high-entropy cryptographic random STRING using the
|
|
* unreserved characters [A-Z] / [a-z] / [0-9] / "-" / "." / "_" / "~"
|
|
* from Section 2.3 of [RFC3986], with a minimum length of 43 characters
|
|
* and a maximum length of 128 characters.
|
|
*/
|
|
|
|
$code_verifier = $request->getCodeVerifier();
|
|
if(empty($code_verifier))
|
|
throw new InvalidOAuth2PKCERequest(sprintf("%s param required", OAuth2Protocol::PKCE_CodeVerifier));
|
|
$code_verifier_len = strlen($code_verifier);
|
|
if( $code_verifier_len < 43 || $code_verifier_len > 128)
|
|
throw new InvalidOAuth2PKCERequest(sprintf("%s param should have at least 43 and at most 128 characters.", OAuth2Protocol::PKCE_CodeVerifier));
|
|
|
|
switch ($code_challenge_method){
|
|
case OAuth2Protocol::PKCE_CodeChallengeMethodPlain:
|
|
return new PKCEPlainValidator($code_challenge, $code_verifier);
|
|
break;
|
|
case OAuth2Protocol::PKCE_CodeChallengeMethodSHA256:
|
|
return new PKCES256Validator($code_challenge, $code_verifier);
|
|
break;
|
|
default:
|
|
throw new InvalidOAuth2PKCERequest(sprintf("invalid %s param", OAuth2Protocol::PKCE_CodeChallengeMethod));
|
|
break;
|
|
}
|
|
}
|
|
} |