spring security AuthorizationCodeOAuth2AuthorizedClientProvider 源码
spring security AuthorizationCodeOAuth2AuthorizedClientProvider 代码
文件路径：/oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/AuthorizationCodeOAuth2AuthorizedClientProvider.java
/*
* Copyright 2002-2021 the original author or authors.
*
* 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
*
* https://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.
*/
package org.springframework.security.oauth2.client;
import org.springframework.lang.Nullable;
import org.springframework.security.oauth2.client.registration.ClientRegistration;
import org.springframework.security.oauth2.client.web.OAuth2AuthorizationRequestRedirectFilter;
import org.springframework.security.oauth2.core.AuthorizationGrantType;
import org.springframework.util.Assert;
/**
* An implementation of an {@link OAuth2AuthorizedClientProvider} for the
* {@link AuthorizationGrantType#AUTHORIZATION_CODE authorization_code} grant.
*
* @author Joe Grandja
* @since 5.2
* @see OAuth2AuthorizedClientProvider
*/
public final class AuthorizationCodeOAuth2AuthorizedClientProvider implements OAuth2AuthorizedClientProvider {
/**
* Attempt to authorize the {@link OAuth2AuthorizationContext#getClientRegistration()
* client} in the provided {@code context}. Returns {@code null} if authorization is
* not supported, e.g. the client's
* {@link ClientRegistration#getAuthorizationGrantType() authorization grant type} is
* not {@link AuthorizationGrantType#AUTHORIZATION_CODE authorization_code} OR the
* client is already authorized.
* @param context the context that holds authorization-specific state for the client
* @return {@code null} if authorization is not supported or the client is already
* authorized
* @throws ClientAuthorizationRequiredException in order to trigger authorization in
* which the {@link OAuth2AuthorizationRequestRedirectFilter} will catch and initiate
* the authorization request
*/
@Override
@Nullable
public OAuth2AuthorizedClient authorize(OAuth2AuthorizationContext context) {
Assert.notNull(context, "context cannot be null");
if (AuthorizationGrantType.AUTHORIZATION_CODE.equals(
context.getClientRegistration().getAuthorizationGrantType()) && context.getAuthorizedClient() == null) {
// ClientAuthorizationRequiredException is caught by
// OAuth2AuthorizationRequestRedirectFilter which initiates authorization
throw new ClientAuthorizationRequiredException(context.getClientRegistration().getRegistrationId());
}
return null;
}
}
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