Java tutorial
/** * 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 com.seyren.core.security.mongo; import com.seyren.core.domain.User; import com.seyren.core.store.UserStore; import com.seyren.core.util.config.SeyrenConfig; import org.springframework.security.authentication.AuthenticationCredentialsNotFoundException; import org.springframework.security.authentication.AuthenticationProvider; import org.springframework.security.authentication.BadCredentialsException; import org.springframework.security.authentication.UsernamePasswordAuthenticationToken; import org.springframework.security.core.Authentication; import org.springframework.security.core.AuthenticationException; import org.springframework.security.crypto.password.PasswordEncoder; import org.springframework.stereotype.Component; import javax.inject.Inject; @Component public class MongoAuthenticationProvider implements AuthenticationProvider { private final PasswordEncoder passwordEncoder; private final SeyrenConfig seyrenConfig; private final UserStore userStore; @Inject public MongoAuthenticationProvider(PasswordEncoder passwordEncoder, SeyrenConfig seyrenConfig, UserStore userStore) { this.passwordEncoder = passwordEncoder; this.seyrenConfig = seyrenConfig; this.userStore = userStore; } @Override public Authentication authenticate(Authentication authentication) throws AuthenticationException { User user = userStore.getUser(authentication.getName()); if (user == null) { throw new AuthenticationCredentialsNotFoundException("User does not exist"); } String password = authentication.getCredentials().toString(); if (passwordEncoder.matches(password, user.getPassword())) { return new UsernamePasswordAuthenticationToken(user.getUsername(), user.getPassword(), user.getAuthorities()); } else { throw new BadCredentialsException("Bad Credentials"); } } @Override public boolean supports(Class<?> authentication) { return authentication.equals(UsernamePasswordAuthenticationToken.class); } }