com.px100systems.data.browser.controller.DbBrowserUserDetailsService.java Source code

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Here is the source code for com.px100systems.data.browser.controller.DbBrowserUserDetailsService.java

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/*
 * This file is part of Px100 Data.
 *
 * Px100 Data is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
    
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see http://www.gnu.org/licenses/
 */
package com.px100systems.data.browser.controller;

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.List;
import java.util.Properties;

import javax.annotation.Resource;
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.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

/**
 * Spring Security user info service    
 * 
 * @version 0.3 <br>Copyright (c) 2015 Px100 Systems. All Rights Reserved.<br>
 * @author Alex Rogachevsky
 */
@Service("userSecurityService")
public class DbBrowserUserDetailsService implements UserDetailsService {
    @Resource(name = "userFile")
    private String usersFile;

    /**
     * Standard user role
     */
    public static final String DEFAULT_AUTHORITY = "ROLE_USER";

    /**
     * Find user by name
     * @param userName user name
     * @return user authentication details
     * @throws UsernameNotFoundException
     */
    @Override
    public UserDetails loadUserByUsername(String userName) throws UsernameNotFoundException {
        String password = getUsers().getProperty(userName);
        if (password == null || password.isEmpty())
            throw new UsernameNotFoundException("User not found");

        List<SimpleGrantedAuthority> authorities = new ArrayList<SimpleGrantedAuthority>();
        authorities.add(new SimpleGrantedAuthority(DEFAULT_AUTHORITY));

        return new User(userName, password, true, true, true, true, authorities);
    }

    /**
     * Load user file content
     * @return user/password pairs
     * @throws UsernameNotFoundException
     */
    public Properties getUsers() throws UsernameNotFoundException {
        File file = new File(usersFile);
        if (!file.exists())
            throw new UsernameNotFoundException("Invalid users file location " + usersFile);
        Properties users = new Properties();
        try {
            users.load(new FileReader(file));
        } catch (Exception e) {
            throw new UsernameNotFoundException("Invalid users file location " + usersFile);
        }
        return users;
    }

    /**
     * Save user file content
     * @param users user/password pairs
     * @throws Exception
     */
    public void saveUsers(Properties users) throws Exception {
        users.store(new FileWriter(usersFile), null);
    }
}