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LoggedInChecker.java
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LoggedInChecker.java
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more contributor license
* agreements. See the NOTICE file distributed with this work for additional information regarding
* copyright ownership. The ASF licenses this file to You 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.
*/
package de.knightsoftnet.gwtp.spring.server.security;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.stereotype.Component;
import javax.inject.Inject;
import de.knightsoftnet.gwtp.spring.server.converter.UserDetailsConverter;
import de.knightsoftnet.gwtp.spring.shared.models.User;
/**
* check if user is logged in. based on the work of https://github.com/imrabti/gwtp-spring-security
*
* @author Manfred Tremmel
*/
@Component
public class LoggedInChecker {
private final UserDetailsConverter userDetailsConverter;
@Inject
public LoggedInChecker(final UserDetailsConverter puserDetailsConverter) {
super();
userDetailsConverter = puserDetailsConverter;
}
/**
* get logged in user.
*
* @return UserData or null if no one is logged in
*/
public User getLoggedInUser() {
User user = null;
final Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
if (authentication != null) {
final Object principal = authentication.getPrincipal();
// principal can be "anonymousUser" (String)
if (principal instanceof UserDetails) {
user = userDetailsConverter.convert((UserDetails) principal);
}
}
return user;
}
}