/*
* Copyright 2013-2014 Erudika. http://erudika.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.
*
* For issues and patches go to: https://github.com/erudika
*/
package com.erudika.para.security;
import com.eaio.uuid.UUID;
import com.erudika.para.core.User;
import java.util.List;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.userdetails.AuthenticationUserDetailsService;
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.openid.OpenIDAttribute;
import org.springframework.security.openid.OpenIDAuthenticationToken;
import org.springframework.util.DigestUtils;
/**
* Simple user service. Looks up users in the data store.
* @author Alex Bogdanovski [alex@erudika.com]
*/
public class SimpleUserService implements UserDetailsService,
AuthenticationUserDetailsService<OpenIDAuthenticationToken> {
/**
* Loads a user from the data store.
* @param ident the user identifier
* @return a user object or null if user is not found
*/
public UserDetails loadUserByUsername(String ident) {
User user = new User();
user.setIdentifier(ident);
user = loadUser(user);
if (user == null) {
throw new UsernameNotFoundException(ident);
}
return user;
}
/**
* Loads a user from the data store or creates a new user from an OpenID profile
* @param token the OpenID authentication token holding the user profile
* @return a user object or null if user is not found
*/
public UserDetails loadUserDetails(OpenIDAuthenticationToken token) {
if (token == null) {
return null;
}
User user = new User();
user.setIdentifier(token.getIdentityUrl());
user = loadUser(user);
if (user == null) {
// create new OpenID user
String email = "email@domain.com";
String firstName = null, lastName = null, fullName = null;
List<OpenIDAttribute> attributes = token.getAttributes();
for (OpenIDAttribute attribute : attributes) {
if (attribute.getName().equals("email")) {
email = attribute.getValues().get(0);
}
if (attribute.getName().equals("firstname")) {
firstName = attribute.getValues().get(0);
}
if (attribute.getName().equals("lastname")) {
lastName = attribute.getValues().get(0);
}
if (attribute.getName().equals("fullname")) {
fullName = attribute.getValues().get(0);
}
}
if (fullName == null) {
if (firstName == null) {
firstName = "No";
}
if (lastName == null) {
lastName = "Name";
}
fullName = firstName.concat(" ").concat(lastName);
}
user = new User();
user.setEmail(email);
user.setName(fullName);
user.setPassword(new UUID().toString());
user.setIdentifier(token.getIdentityUrl());
if (user.getPicture() == null) {
if (email != null) {
String emailHash = DigestUtils.md5DigestAsHex(email.getBytes());
user.setPicture("http://www.gravatar.com/avatar/" + emailHash + "?size=200&d=mm&r=pg");
} else {
user.setPicture("http://www.gravatar.com/avatar?d=mm&size=200");
}
}
String id = user.create();
if (id == null) {
throw new BadCredentialsException("Authentication failed: cannot create new user.");
}
}
return user;
}
private User loadUser(User u) {
return User.readUserForIdentifier(u);
}
}