/*
* 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.jaas;
import javax.security.auth.Subject;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import javax.security.auth.login.LoginContext;
import org.apache.sshd.common.util.logging.AbstractLoggingBean;
import org.apache.sshd.server.auth.password.PasswordAuthenticator;
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 JaasPasswordAuthenticator extends AbstractLoggingBean implements PasswordAuthenticator {
private String domain;
public JaasPasswordAuthenticator() {
this(null);
}
public JaasPasswordAuthenticator(String domain) {
this.domain = domain;
}
public String getDomain() {
return domain;
}
public void setDomain(String domain) {
this.domain = domain;
}
@Override
public boolean authenticate(String username, String password, ServerSession session) {
return authenticate(username, password);
}
public boolean authenticate(final String username, final String password) {
try {
Subject subject = new Subject();
LoginContext loginContext = new LoginContext(domain, subject, callbacks -> {
for (Callback callback : callbacks) {
if (callback instanceof NameCallback) {
((NameCallback) callback).setName(username);
} else if (callback instanceof PasswordCallback) {
((PasswordCallback) callback).setPassword(password.toCharArray());
} else {
throw new UnsupportedCallbackException(callback);
}
}
});
loginContext.login();
loginContext.logout();
return true;
} catch (Exception e) {
log.error("Authentication failed with error", e);
return false;
}
}
}