/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.sling.auth.xing.login.impl;
import javax.jcr.Credentials;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.api.security.user.User;
import org.apache.sling.auth.xing.login.XingLoginUserManager;
import org.apache.sling.auth.xing.login.XingLoginUtil;
import org.apache.sling.jcr.jackrabbit.server.security.AuthenticationPlugin;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class XingLoginAuthenticationPlugin implements AuthenticationPlugin {
private final XingLoginUserManager xingLoginUserManager;
private final Logger logger = LoggerFactory.getLogger(XingLoginAuthenticationPlugin.class);
public XingLoginAuthenticationPlugin(final XingLoginUserManager xingLoginUserManager) {
this.xingLoginUserManager = xingLoginUserManager;
}
@Override
public boolean authenticate(final Credentials credentials) throws RepositoryException {
logger.debug("authenticate");
// check if given credentials have a hash
final String givenHash = XingLoginUtil.getHash(credentials);
if (givenHash == null) {
logger.debug("unable to get hash from given credentials");
return false;
}
User user = xingLoginUserManager.getUser(credentials);
if (user == null) { // check if given credentials pull up an existing user
logger.debug("no user found for given credentials");
if (xingLoginUserManager.autoCreate()) {
logger.debug("creating a new user from given user data");
// validating with hash happens in createUser(credentials)
user = xingLoginUserManager.createUser(credentials);
}
}
// re-check
if (user == null) {
return false;
}
// check if stored user has a hash
final String storedHash = xingLoginUserManager.getHash(user);
if (storedHash == null) { // should not happen, so return false
logger.debug("no hash found for user '{}'", user.getID());
return false;
}
// check if hashes match
if (givenHash.equals(storedHash)) {
logger.debug("hashes for user '{}' do match", user.getID());
return true;
} else {
logger.debug("hashes for user '{}' do not match", user.getID());
if (xingLoginUserManager.autoUpdate()) {
logger.debug("updating an existing user from given user data");
// validating with hash happens in updateUser(credentials)
return xingLoginUserManager.updateUser(credentials) != null;
}
}
return false;
}
}