io.github.azige.bbs.service.AccountService.java Source code

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Here is the source code for io.github.azige.bbs.service.AccountService.java

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/*
 * Copyright 2014 Azige.
 *
 * 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 io.github.azige.bbs.service;

import java.nio.charset.Charset;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Base64;
import java.util.Random;

import io.github.azige.bbs.data.AccountRepository;
import io.github.azige.bbs.entity.Account;
import io.github.azige.bbs.entity.Profile;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.context.annotation.ScopedProxyMode;
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.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

/**
 *
 * @author Azige
 */
@Service
@Scope(proxyMode = ScopedProxyMode.TARGET_CLASS)
@Transactional
public class AccountService implements AuthenticationProvider {

    @Autowired
    private AccountRepository accountRepository;

    private final MessageDigest sha1;
    private final Random random = new SecureRandom();

    public AccountService() throws NoSuchAlgorithmException {
        sha1 = MessageDigest.getInstance("SHA-1");
    }

    public Profile register(String accountName, String password, String nickName, String description)
            throws ServiceException {
        if (accountRepository.findByAccountName(accountName) != null) {
            ServiceException.throwAccountAlreadyExist();
        }
        Profile profile = new Profile();
        profile.setNickName(nickName);
        profile.setDescription(description);

        String salt = generateSalt();
        password = encryptPassword(password, salt);

        Account account = new Account();
        account.setAccountName(accountName);
        account.setSalt(salt);
        account.setPassword(password);
        account.setProfile(profile);
        accountRepository.save(account);
        return profile;
    }

    public String generateSalt() {
        byte[] saltBytes = new byte[20];
        random.nextBytes(saltBytes);
        return Base64.getEncoder().encodeToString(saltBytes);
    }

    public String encryptPassword(String password, String salt) {
        return Base64.getEncoder()
                .encodeToString(sha1.digest((salt + password).getBytes(Charset.forName("UTF-8"))));
    }

    @Override
    public Authentication authenticate(Authentication authentication) throws AuthenticationException {
        String username = authentication.getName();
        String password = (String) authentication.getCredentials();

        Account account = accountRepository.findByAccountName(username);
        if (account == null) {
            throw new UsernameNotFoundException("User name not found");
        }
        password = encryptPassword(password, account.getSalt());
        if (password.equals(account.getPassword())) {
            return new UsernamePasswordAuthenticationToken(account.getProfile(), password, Account.AUTHORITYS);
        }
        return authentication;
    }

    @Override
    public boolean supports(Class<?> authentication) {
        return true;
    }
}