content: /*
   * Copyright 1999-2018 Alibaba Group Holding Ltd.
   *
   * 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.alibaba.nacos.console.security;
  
  import org.springframework.beans.factory.annotation.Autowired;
  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.UserDetails;
  import org.springframework.stereotype.Component;
  
  /**
   * auth provider
   *
   * @author wfnuser
   */
  @Component
  public class CustomAuthenticationProvider implements AuthenticationProvider {
  
      @Autowired
      private CustomUserDetailsServiceImpl userDetailsService;
  
      @Override
      public Authentication authenticate(Authentication authentication) throws AuthenticationException {
  
          String username = (String) authentication.getPrincipal();
          String password = (String) authentication.getCredentials();
          UserDetails userDetails = userDetailsService.loadUserByUsername(username);
  
          if (!password.equals(userDetails.getPassword())) {
              return new UsernamePasswordAuthenticationToken(username, null, null);
          }
          return null;
      }
  
      @Override
      public boolean supports(Class<?> aClass) {
          return aClass.equals(UsernamePasswordAuthenticationToken.class);
      }
  
  }
  