| /* |
| * 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.auth.hostbased; |
| |
| import java.io.IOException; |
| import java.security.GeneralSecurityException; |
| import java.security.KeyPair; |
| import java.security.cert.X509Certificate; |
| import java.util.AbstractMap.SimpleImmutableEntry; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| |
| import org.apache.sshd.common.session.SessionContext; |
| import org.apache.sshd.common.util.GenericUtils; |
| |
| /** |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| @FunctionalInterface |
| public interface HostKeyIdentityProvider { |
| /** |
| * @param session The {@link SessionContext} for invoking this load command - may be {@code null} |
| * if not invoked within a session context (e.g., offline tool). |
| * @return The host keys as a {@link java.util.Map.Entry} of key + certificates (which can |
| * be {@code null}/empty) |
| * @throws IOException If failed to load the keys |
| * @throws GeneralSecurityException If failed to parse the keys |
| */ |
| Iterable<? extends Map.Entry<KeyPair, List<X509Certificate>>> loadHostKeys(SessionContext session) |
| throws IOException, GeneralSecurityException; |
| |
| static Iterator<? extends Map.Entry<KeyPair, List<X509Certificate>>> iteratorOf( |
| SessionContext session, HostKeyIdentityProvider provider) |
| throws IOException, GeneralSecurityException { |
| return GenericUtils.iteratorOf((provider == null) ? null : provider.loadHostKeys(session)); |
| } |
| |
| static HostKeyIdentityProvider wrap(KeyPair... pairs) { |
| return wrap(GenericUtils.asList(pairs)); |
| } |
| |
| static HostKeyIdentityProvider wrap(Iterable<KeyPair> pairs) { |
| return session -> GenericUtils.wrapIterable(pairs, |
| kp -> new SimpleImmutableEntry<>(kp, Collections.<X509Certificate> emptyList())); |
| } |
| } |