/*
* 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.sshd.server.auth;
import org.apache.sshd.common.NamedFactory;
import org.apache.sshd.common.util.Buffer;
import org.apache.sshd.server.PasswordAuthenticator;
import org.apache.sshd.server.UserAuth;
import org.apache.sshd.server.session.ServerSession;
/**
* TODO Add javadoc
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class UserAuthPassword implements UserAuth {
public static class Factory implements NamedFactory<UserAuth> {
public String getName() {
return "password";
}
public UserAuth create() {
return new UserAuthPassword();
}
}
public Object auth(ServerSession session, String username, Buffer buffer) throws Exception {
boolean newPassword = buffer.getBoolean();
if (newPassword) {
throw new IllegalStateException("Password changes are not supported");
}
String password = buffer.getString();
return checkPassword(session, username, password);
}
private Object checkPassword(ServerSession session, String username, String password) throws Exception {
PasswordAuthenticator auth = session.getServerFactoryManager().getPasswordAuthenticator();
if (auth != null) {
Object identity = auth.authenticate(username, password, session);
if (identity != null) {
return identity;
} else {
throw new Exception("Authentication failed: bad username or password supplied");
}
}
throw new Exception("No PasswordAuthenticator configured");
}
}