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61 lines
2.1 KiB
Java
61 lines
2.1 KiB
Java
// Copyright 2016 The Domain Registry Authors. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package google.registry.rde;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import com.google.appengine.api.ThreadManager;
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import com.jcraft.jsch.JSch;
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import com.jcraft.jsch.JSchException;
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import dagger.Module;
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import dagger.Provides;
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import google.registry.config.ConfigModule.Config;
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import google.registry.keyring.api.KeyModule.Key;
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/** Dagger module for {@link JSch} which provides SSH/SFTP connectivity. */
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@Module
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public final class JSchModule {
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@Provides
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static JSch provideJSch(
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@Config("rdeSshIdentity") String identity,
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@Key("rdeSshClientPrivateKey") String privateKey,
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@Key("rdeSshClientPublicKey") String publicKey) {
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applyAppEngineKludge();
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JSch jsch = new JSch();
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try {
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jsch.addIdentity(
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identity,
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privateKey.getBytes(UTF_8),
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publicKey.getBytes(UTF_8),
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null);
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} catch (JSchException e) {
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throw new RuntimeException(e);
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}
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// TODO(b/13028224): Implement known hosts checking.
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JSch.setConfig("StrictHostKeyChecking", "no");
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return jsch;
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}
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/**
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* Overrides the threadFactory used in JSch and disable {@link Thread#setName(String)} in order to
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* ensure GAE compatibility. By default it uses the default executor, which fails under GAE. This
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* is currently a Google-specific patch that needs to be sent upstream.
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*/
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private static void applyAppEngineKludge() {
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JSch.threadFactory = ThreadManager.currentRequestThreadFactory();
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JSch.useThreadNames = false;
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}
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}
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