com.caa.koko.auth.CalNetUserDetailService.java Source code

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Here is the source code for com.caa.koko.auth.CalNetUserDetailService.java

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/**
 * Copyright (c) 2012 Nolan Lum <nol888@gmail.com>
 *
 * 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.caa.koko.auth;

import javax.naming.NamingException;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.ldap.core.DirContextAdapter;
import org.springframework.ldap.core.LdapTemplate;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.userdetails.AuthenticationUserDetailsService;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;

import com.caa.koko.data.User;

@Service
public class CalNetUserDetailService implements AuthenticationUserDetailsService<Authentication> {
    private final Logger log = LoggerFactory.getLogger(CalNetUserDetailService.class);
    private SessionFactory sessionFactory;
    private LdapTemplate ldapTemplate;

    @Override
    public UserDetails loadUserDetails(Authentication token) throws UsernameNotFoundException {
        String calnetUID = (String) token.getPrincipal();

        try {
            return lookupCalNetUID(Integer.parseInt(calnetUID));
        } catch (NamingException e) {
            throw new UsernameNotFoundException("LDAP query failed!", e);
        }
    }

    private User lookupCalNetUID(int uid) throws NamingException {
        log.debug("Querying info for CalNet UID: {}", uid);

        Session s = sessionFactory.openSession();
        Object u = s.byId(User.class).load(uid);

        if (u == null) {
            log.debug("No existing user for '{}' found; querying LDAP.", uid);

            DirContextAdapter a = (DirContextAdapter) ldapTemplate.lookup("uid=" + uid + ",ou=people");

            String name = (String) a.getAttributes().get("displayName").get();
            String email = "fake@berkeley.edu"; // TODO
            String phone = "0000000000"; // TODO

            User user = new User(uid);
            user.setEmail(email);
            user.setName(name);
            user.setPhone(phone);

            s.save(user);
            s.flush();
            s.close();

            return user;
        } else {
            log.debug("Mapped {} => '{}'.", uid, ((User) u).getName());

            s.close();
            return (User) u;
        }
    }

    public void setSessionFactory(SessionFactory f) {
        this.sessionFactory = f;
    }

    public void setLdapTemplate(LdapTemplate t) {
        this.ldapTemplate = t;
    }

}