com.javaeeeee.components.JpaAuthenticationProvider.java Source code

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/*
 * The MIT License
 *
 * Copyright 2016 Dmitry Noranovich <javaeeeee at gmail dot com>.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.javaeeeee.components;

import com.javaeeeee.entities.User;
import com.javaeeeee.repositories.UsersRepository;
import java.util.Optional;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.authentication.AuthenticationCredentialsNotFoundException;
import org.springframework.security.authentication.AuthenticationProvider;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
import org.springframework.stereotype.Component;

/**
 * This class is used for basic authentication using credentials stored in a
 * database. http://www.baeldung.com/spring-security-authentication-provider
 *
 * @author Dmitry Noranovich <javaeeeee at gmail dot com>
 */
@Component
public class JpaAuthenticationProvider implements AuthenticationProvider {

    /**
     * A user repository.
     */
    @Autowired
    private UsersRepository usersRepository;

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        Optional<User> optional = usersRepository.findByUsernameAndPassword(authentication.getName(),
                authentication.getCredentials().toString());
        if (optional.isPresent()) {
            return new UsernamePasswordAuthenticationToken(authentication.getPrincipal(),
                    authentication.getCredentials(), authentication.getAuthorities());

        } else {
            throw new AuthenticationCredentialsNotFoundException("Wrong credentials.");
        }
    }

    @Override
    public boolean supports(Class<?> authentication) {
        return authentication.equals(UsernamePasswordAuthenticationToken.class);
    }

}