spring security OAuth2AuthenticationToken 源码

spring security OAuth2AuthenticationToken 代码

文件路径：/oauth2/oauth2-client/src/main/java/org/springframework/security/oauth2/client/authentication/OAuth2AuthenticationToken.java

/*
 * Copyright 2002-2017 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.authentication;

import java.util.Collection;

import org.springframework.security.authentication.AbstractAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.SpringSecurityCoreVersion;
import org.springframework.security.oauth2.client.OAuth2AuthorizedClient;
import org.springframework.security.oauth2.core.user.OAuth2User;
import org.springframework.util.Assert;

/**
 * An implementation of an {@link AbstractAuthenticationToken} that represents an OAuth
 * 2.0 {@link Authentication}.
 * <p>
 * The {@link Authentication} associates an {@link OAuth2User} {@code Principal} to the
 * identifier of the {@link #getAuthorizedClientRegistrationId() Authorized Client}, which
 * the End-User ({@code Principal}) granted authorization to so that it can access it's
 * protected resources at the UserInfo Endpoint.
 *
 * @author Joe Grandja
 * @since 5.0
 * @see AbstractAuthenticationToken
 * @see OAuth2User
 * @see OAuth2AuthorizedClient
 */
public class OAuth2AuthenticationToken extends AbstractAuthenticationToken {

	private static final long serialVersionUID = SpringSecurityCoreVersion.SERIAL_VERSION_UID;

	private final OAuth2User principal;

	private final String authorizedClientRegistrationId;

	/**
	 * Constructs an {@code OAuth2AuthenticationToken} using the provided parameters.
	 * @param principal the user {@code Principal} registered with the OAuth 2.0 Provider
	 * @param authorities the authorities granted to the user
	 * @param authorizedClientRegistrationId the registration identifier of the
	 * {@link OAuth2AuthorizedClient Authorized Client}
	 */
	public OAuth2AuthenticationToken(OAuth2User principal, Collection<? extends GrantedAuthority> authorities,
			String authorizedClientRegistrationId) {
		super(authorities);
		Assert.notNull(principal, "principal cannot be null");
		Assert.hasText(authorizedClientRegistrationId, "authorizedClientRegistrationId cannot be empty");
		this.principal = principal;
		this.authorizedClientRegistrationId = authorizedClientRegistrationId;
		this.setAuthenticated(true);
	}

	@Override
	public OAuth2User getPrincipal() {
		return this.principal;
	}

	@Override
	public Object getCredentials() {
		// Credentials are never exposed (by the Provider) for an OAuth2 User
		return "";
	}

	/**
	 * Returns the registration identifier of the {@link OAuth2AuthorizedClient Authorized
	 * Client}.
	 * @return the registration identifier of the Authorized Client.
	 */
	public String getAuthorizedClientRegistrationId() {
		return this.authorizedClientRegistrationId;
	}

}

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