| /* |
| * 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.config.keys; |
| |
| import java.nio.file.Path; |
| import java.security.KeyPair; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Objects; |
| import java.util.function.Predicate; |
| |
| import org.apache.sshd.common.config.keys.FilePasswordProvider; |
| import org.apache.sshd.common.config.keys.FilePasswordProviderHolder; |
| import org.apache.sshd.common.keyprovider.AbstractKeyPairProvider; |
| import org.apache.sshd.common.keyprovider.KeyPairProvider; |
| import org.apache.sshd.common.session.SessionContext; |
| import org.apache.sshd.common.util.GenericUtils; |
| |
| /** |
| * Watches over a group of files that contains client identities |
| * |
| * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a> |
| */ |
| public class ClientIdentitiesWatcher extends AbstractKeyPairProvider implements KeyPairProvider { |
| private final Collection<ClientIdentityProvider> providers; |
| |
| public ClientIdentitiesWatcher(Collection<? extends Path> paths, |
| ClientIdentityLoader loader, FilePasswordProvider provider) { |
| this(paths, loader, provider, true); |
| } |
| |
| public ClientIdentitiesWatcher(Collection<? extends Path> paths, |
| ClientIdentityLoader loader, FilePasswordProvider provider, boolean strict) { |
| this(paths, |
| ClientIdentityLoaderHolder.loaderHolderOf(Objects.requireNonNull(loader, "No client identity loader")), |
| FilePasswordProviderHolder.providerHolderOf(Objects.requireNonNull(provider, "No password provider")), |
| strict); |
| } |
| |
| public ClientIdentitiesWatcher(Collection<? extends Path> paths, |
| ClientIdentityLoaderHolder loader, FilePasswordProviderHolder provider) { |
| this(paths, loader, provider, true); |
| } |
| |
| public ClientIdentitiesWatcher(Collection<? extends Path> paths, |
| ClientIdentityLoaderHolder loader, FilePasswordProviderHolder provider, boolean strict) { |
| this(buildProviders(paths, loader, provider, strict)); |
| } |
| |
| public ClientIdentitiesWatcher(Collection<ClientIdentityProvider> providers) { |
| this.providers = providers; |
| } |
| |
| @Override |
| public Iterable<KeyPair> loadKeys(SessionContext session) { |
| return loadKeys(session, null); |
| } |
| |
| protected Iterable<KeyPair> loadKeys(SessionContext session, Predicate<KeyPair> filter) { |
| return ClientIdentityProvider.lazyKeysLoader(providers, p -> doGetKeyPairs(session, p), filter); |
| } |
| |
| protected Iterable<KeyPair> doGetKeyPairs(SessionContext session, ClientIdentityProvider p) { |
| try { |
| Iterable<KeyPair> kp = p.getClientIdentities(session); |
| if (kp == null) { |
| if (log.isDebugEnabled()) { |
| log.debug("loadKeys({}) no key loaded", p); |
| } |
| } |
| |
| return kp; |
| } catch (Throwable e) { |
| warn("loadKeys({}) failed ({}) to load key: {}", |
| p, e.getClass().getSimpleName(), e.getMessage(), e); |
| return null; |
| } |
| } |
| |
| public static List<ClientIdentityProvider> buildProviders( |
| Collection<? extends Path> paths, ClientIdentityLoader loader, FilePasswordProvider provider, boolean strict) { |
| return buildProviders(paths, |
| ClientIdentityLoaderHolder.loaderHolderOf(Objects.requireNonNull(loader, "No client identity loader")), |
| FilePasswordProviderHolder.providerHolderOf(Objects.requireNonNull(provider, "No password provider")), |
| strict); |
| } |
| |
| public static List<ClientIdentityProvider> buildProviders( |
| Collection<? extends Path> paths, ClientIdentityLoaderHolder loader, |
| FilePasswordProviderHolder provider, boolean strict) { |
| if (GenericUtils.isEmpty(paths)) { |
| return Collections.emptyList(); |
| } |
| |
| return GenericUtils.map(paths, p -> new ClientIdentityFileWatcher(p, loader, provider, strict)); |
| } |
| } |