de.uni_koeln.spinfo.maalr.login.OpenIdDetailsManager.java Source code

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Here is the source code for de.uni_koeln.spinfo.maalr.login.OpenIdDetailsManager.java

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/*******************************************************************************
 * Copyright 2013 Sprachliche Informationsverarbeitung, University of Cologne
 * 
 * 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.
 ******************************************************************************/
package de.uni_koeln.spinfo.maalr.login;

import java.util.HashSet;
import java.util.Set;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.User;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.provisioning.UserDetailsManager;

import de.uni_koeln.spinfo.maalr.common.shared.Role;
import de.uni_koeln.spinfo.maalr.mongo.exceptions.InvalidUserException;

/**
 * User Details service for OpenID. If a new user logs in the first time,
 * a new entry will be inserted into the user database, and the new user
 * will get the role 'openid'. Firstname, lastname and email will be null,
 * as this information is not yet available. If a user logs in afterwards,
 * these properties will be taken from the database, as well as the 
 * assigned role. 
 * 
 * @author sschwieb
 *
 */
public class OpenIdDetailsManager implements UserDetailsManager {

    private Logger logger = LoggerFactory.getLogger(getClass());

    @Autowired
    private UserInfoBackend userInfos;

    @Override
    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
        if (userInfos.userExists(username)) {
            MaalrUserInfo info = userInfos.getByLogin(username);
            logger.info("Successfully logged in " + info);
            return infoToDetails(info);
        } else {
            MaalrUserInfo info = new MaalrUserInfo(username, Role.OPENID_2);
            logger.info("Created new login for " + info);
            return infoToDetails(info);
        }
    }

    private UserDetails infoToDetails(MaalrUserInfo info) {
        Set<GrantedAuthority> authorities = new HashSet<GrantedAuthority>();
        GrantedAuthority authority = new SimpleGrantedAuthority(info.getRole().getRoleId());
        authorities.add(authority);
        User details = new User(info.getLogin(), "ignored", authorities);
        return details;
    }

    @Override
    public void createUser(UserDetails user) {
        MaalrUserInfo info = new MaalrUserInfo(user.getUsername(), Role.OPENID_2);
        try {
            userInfos.insert(info);
        } catch (InvalidUserException e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public void updateUser(UserDetails user) {
        // Not needed, as this is the responsibility of the OpenID-provider
    }

    @Override
    public void deleteUser(String username) {
        // Not needed, as this is the responsibility of the OpenID-provider
    }

    @Override
    public void changePassword(String oldPassword, String newPassword) {
        // Not needed, as this is the responsibility of the OpenID-provider
    }

    @Override
    public boolean userExists(String username) {
        return userInfos.userExists(username);
    }

}