001/*******************************************************************************
002 * Copyright 2014 The MITRE Corporation
003 *   and the MIT Kerberos and Internet Trust Consortium
004 * 
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 * 
009 *   http://www.apache.org/licenses/LICENSE-2.0
010 * 
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 ******************************************************************************/
017package org.mitre.oauth2.service.impl;
018
019import java.math.BigInteger;
020import java.security.SecureRandom;
021import java.util.Collection;
022import java.util.HashSet;
023
024import org.mitre.oauth2.model.ClientDetailsEntity;
025import org.mitre.oauth2.model.ClientDetailsEntity.AuthMethod;
026import org.mitre.oauth2.service.ClientDetailsEntityService;
027import org.springframework.beans.factory.annotation.Autowired;
028import org.springframework.security.core.GrantedAuthority;
029import org.springframework.security.core.authority.SimpleGrantedAuthority;
030import org.springframework.security.core.userdetails.User;
031import org.springframework.security.core.userdetails.UserDetails;
032import org.springframework.security.core.userdetails.UserDetailsService;
033import org.springframework.security.core.userdetails.UsernameNotFoundException;
034import org.springframework.stereotype.Service;
035
036import com.google.common.base.Strings;
037
038/**
039 * Shim layer to convert a ClientDetails service into a UserDetails service
040 * 
041 * @author AANGANES
042 *
043 */
044@Service("clientUserDetailsService")
045public class DefaultClientUserDetailsService implements UserDetailsService {
046
047        private static GrantedAuthority ROLE_CLIENT = new SimpleGrantedAuthority("ROLE_CLIENT");
048        
049        @Autowired
050        private ClientDetailsEntityService clientDetailsService;
051
052        @Override
053        public UserDetails loadUserByUsername(String clientId) throws  UsernameNotFoundException {
054
055                ClientDetailsEntity client = clientDetailsService.loadClientByClientId(clientId);
056
057                if (client != null) {
058
059                        String password = Strings.nullToEmpty(client.getClientSecret());
060                        
061                        if (client.getTokenEndpointAuthMethod() != null && 
062                                        (client.getTokenEndpointAuthMethod().equals(AuthMethod.PRIVATE_KEY) ||
063                                                        client.getTokenEndpointAuthMethod().equals(AuthMethod.SECRET_JWT))) {
064                                
065                                // Issue a random password each time to prevent password auth from being used (or skipped) 
066                                // for private key or shared key clients, see #715
067                                
068                                password = new BigInteger(512, new SecureRandom()).toString(16);
069                        }
070                        
071                        boolean enabled = true;
072                        boolean accountNonExpired = true;
073                        boolean credentialsNonExpired = true;
074                        boolean accountNonLocked = true;
075                        Collection<GrantedAuthority> authorities = new HashSet<GrantedAuthority>(client.getAuthorities());
076                        authorities.add(ROLE_CLIENT);
077
078                        return new User(clientId, password, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, authorities);
079                } else {
080                        throw new UsernameNotFoundException("Client not found: " + clientId);
081                }
082
083        }
084
085        public ClientDetailsEntityService getClientDetailsService() {
086                return clientDetailsService;
087        }
088
089        public void setClientDetailsService(ClientDetailsEntityService clientDetailsService) {
090                this.clientDetailsService = clientDetailsService;
091        }
092
093}