package org.springframework.security.ldap.userdetails;
import java.util.Collection;
import org.springframework.ldap.core.DirContextOperations;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.AuthorityUtils;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.ldap.search.LdapUserSearch;
import org.springframework.util.Assert;
/**
* LDAP implementation of UserDetailsService based around an {@link LdapUserSearch}
* and an {@link LdapAuthoritiesPopulator}. The final <tt>UserDetails</tt> object
* returned from <tt>loadUserByUsername</tt> is created by the configured <tt>UserDetailsContextMapper</tt>.
*
* @author Luke Taylor
*/
public class LdapUserDetailsService implements UserDetailsService {
private final LdapUserSearch userSearch;
private final LdapAuthoritiesPopulator authoritiesPopulator;
private UserDetailsContextMapper userDetailsMapper = new LdapUserDetailsMapper();
public LdapUserDetailsService(LdapUserSearch userSearch) {
this(userSearch, new NullLdapAuthoritiesPopulator());
}
public LdapUserDetailsService(LdapUserSearch userSearch, LdapAuthoritiesPopulator authoritiesPopulator) {
Assert.notNull(userSearch, "userSearch must not be null");
Assert.notNull(authoritiesPopulator, "authoritiesPopulator must not be null");
this.userSearch = userSearch;
this.authoritiesPopulator = authoritiesPopulator;
}
public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {
DirContextOperations userData = userSearch.searchForUser(username);
return userDetailsMapper.mapUserFromContext(userData, username,
authoritiesPopulator.getGrantedAuthorities(userData, username));
}
public void setUserDetailsMapper(UserDetailsContextMapper userDetailsMapper) {
Assert.notNull(userDetailsMapper, "userDetailsMapper must not be null");
this.userDetailsMapper = userDetailsMapper;
}
private static final class NullLdapAuthoritiesPopulator implements LdapAuthoritiesPopulator {
public Collection<GrantedAuthority> getGrantedAuthorities(DirContextOperations userDetails, String username) {
return AuthorityUtils.NO_AUTHORITIES;
}
}
}