/*
* 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.client.keyverifier;
import java.net.SocketAddress;
import java.security.PublicKey;
import java.util.Map;
import org.apache.sshd.client.session.ClientSession;
import org.apache.sshd.common.util.logging.AbstractLoggingBean;
/*
* A ServerKeyVerifier that delegates verification to the ServerKeyVerifier found in the ClientSession metadata
* The ServerKeyVerifier can be specified at the SshClient level, which may have connections to multiple hosts.
* This technique lets each connection have its own ServerKeyVerifier.
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class DelegatingServerKeyVerifier extends AbstractLoggingBean implements ServerKeyVerifier {
public DelegatingServerKeyVerifier() {
super();
}
@Override
public boolean verifyServerKey(ClientSession sshClientSession, SocketAddress remoteAddress, PublicKey serverKey) {
Map<Object, Object> metadataMap = sshClientSession.getMetadataMap();
Object verifier = metadataMap.get(ServerKeyVerifier.class);
if (verifier == null) {
if (log.isTraceEnabled()) {
log.trace("verifyServerKey(" + remoteAddress + ") No verifier found in ClientSession metadata; accepting server key");
}
return true;
}
// We throw if it's not a ServerKeyVerifier...
return ((ServerKeyVerifier) verifier).verifyServerKey(sshClientSession, remoteAddress, serverKey);
}
}