/*
* 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.pubkey;
import java.security.PublicKey;
import java.util.Collection;
import java.util.Collections;
import org.apache.sshd.common.config.keys.KeyUtils;
import org.apache.sshd.common.util.GenericUtils;
import org.apache.sshd.common.util.logging.AbstractLoggingBean;
import org.apache.sshd.server.session.ServerSession;
/**
* Checks against a {@link Collection} of {@link PublicKey}s
*/
public class KeySetPublickeyAuthenticator extends AbstractLoggingBean implements PublickeyAuthenticator {
private final Collection<? extends PublicKey> keySet;
public KeySetPublickeyAuthenticator(Collection<? extends PublicKey> keySet) {
this.keySet = (keySet == null) ? Collections.emptyList() : keySet;
}
public final Collection<? extends PublicKey> getKeySet() {
return keySet;
}
@Override
public boolean authenticate(String username, PublicKey key, ServerSession session) {
return authenticate(username, key, session, getKeySet());
}
public boolean authenticate(String username, PublicKey key, ServerSession session, Collection<? extends PublicKey> keys) {
if (GenericUtils.isEmpty(keys)) {
if (log.isDebugEnabled()) {
log.debug("authenticate(" + username + ")[" + session + "] no keys");
}
return false;
}
PublicKey matchKey = KeyUtils.findMatchingKey(key, keys);
boolean matchFound = matchKey != null;
if (log.isDebugEnabled()) {
log.debug("authenticate(" + username + ")[" + session + "] match found=" + matchFound);
}
return matchFound;
}
}