/*
* 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.userinfo;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import com.nimbusds.oauth2.sdk.ErrorObject;
import com.nimbusds.openid.connect.sdk.UserInfoErrorResponse;
import net.minidev.json.JSONObject;
import reactor.core.publisher.Mono;
import org.springframework.core.ParameterizedTypeReference;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.oauth2.core.AuthenticationMethod;
import org.springframework.security.oauth2.core.OAuth2AccessToken;
import org.springframework.security.oauth2.core.OAuth2AuthenticationException;
import org.springframework.security.oauth2.core.OAuth2Error;
import org.springframework.security.oauth2.core.user.DefaultOAuth2User;
import org.springframework.security.oauth2.core.user.OAuth2User;
import org.springframework.security.oauth2.core.user.OAuth2UserAuthority;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.web.reactive.function.UnsupportedMediaTypeException;
import org.springframework.web.reactive.function.client.ClientResponse;
import org.springframework.web.reactive.function.client.WebClient;
/**
* An implementation of an {@link ReactiveOAuth2UserService} that supports standard OAuth
* 2.0 Provider's.
*
* For standard OAuth 2.0 Provider's, the attribute name used to access the user's name
* from the UserInfo response is required and therefore must be available via
* {@link org.springframework.security.oauth2.client.registration.ClientRegistration.ProviderDetails.UserInfoEndpoint#getUserNameAttributeName()
* UserInfoEndpoint.getUserNameAttributeName()}.
*
* NOTE: Attribute names are not standardized between providers and
* therefore will vary. Please consult the provider's API documentation for the set of
* supported user attribute names.
*
* @author Rob Winch
* @since 5.1
* @see ReactiveOAuth2UserService
* @see OAuth2UserRequest
* @see OAuth2User
* @see DefaultOAuth2User
*/
public class DefaultReactiveOAuth2UserService implements ReactiveOAuth2UserService {
private static final String INVALID_USER_INFO_RESPONSE_ERROR_CODE = "invalid_user_info_response";
private static final String MISSING_USER_INFO_URI_ERROR_CODE = "missing_user_info_uri";
private static final String MISSING_USER_NAME_ATTRIBUTE_ERROR_CODE = "missing_user_name_attribute";
private static final ParameterizedTypeReference