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// Copyright (C) 2009 The Android Open Source Project
//
// Licensed 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 com.google.gerrit.sshd;
import static com.google.gerrit.extensions.registration.PrivateInternals_DynamicTypes.registerInParentInjectors;
import static com.google.inject.Scopes.SINGLETON;
import com.google.common.base.CharMatcher;
import com.google.common.base.Splitter;
import com.google.gerrit.extensions.registration.DynamicItem;
import com.google.gerrit.extensions.registration.DynamicSet;
import com.google.gerrit.lifecycle.LifecycleModule;
import com.google.gerrit.server.PeerDaemonUser;
import com.google.gerrit.server.RemotePeer;
import com.google.gerrit.server.config.GerritConfigListener;
import com.google.gerrit.server.config.GerritRequestModule;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.server.git.QueueProvider;
import com.google.gerrit.server.git.receive.AsyncReceiveCommits;
import com.google.gerrit.server.plugins.ModuleGenerator;
import com.google.gerrit.server.plugins.ReloadPluginListener;
import com.google.gerrit.server.plugins.StartPluginListener;
import com.google.gerrit.server.ssh.SshInfo;
import com.google.gerrit.server.util.RequestScopePropagator;
import com.google.inject.Inject;
import com.google.inject.internal.UniqueAnnotations;
import com.google.inject.servlet.RequestScoped;
import java.net.SocketAddress;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import org.apache.sshd.server.auth.gss.GSSAuthenticator;
import org.apache.sshd.server.auth.pubkey.PublickeyAuthenticator;
import org.apache.sshd.server.command.CommandFactory;
import org.eclipse.jgit.lib.Config;
/** Configures standard dependencies for {@link SshDaemon}. */
public class SshModule extends LifecycleModule {
private final Map<String, String> aliases;
@Inject
SshModule(@GerritServerConfig Config cfg) {
aliases = new HashMap<>();
for (String name : cfg.getNames("ssh-alias", true)) {
aliases.put(name, cfg.getString("ssh-alias", null, name));
}
}
@Override
protected void configure() {
bindScope(RequestScoped.class, SshScope.REQUEST);
bind(RequestScopePropagator.class).to(SshScope.Propagator.class);
bind(SshScope.class).in(SINGLETON);
configureRequestScope();
install(new AsyncReceiveCommits.Module());
configureAliases();
bind(SshLog.class);
DynamicSet.bind(binder(), GerritConfigListener.class).to(SshLog.class);
bind(SshInfo.class).to(SshDaemon.class).in(SINGLETON);
factory(DispatchCommand.Factory.class);
factory(PeerDaemonUser.Factory.class);
bind(DispatchCommandProvider.class)
.annotatedWith(Commands.CMD_ROOT)
.toInstance(new DispatchCommandProvider(Commands.CMD_ROOT));
bind(CommandFactoryProvider.class);
bind(CommandFactory.class).toProvider(CommandFactoryProvider.class);
bind(ScheduledThreadPoolExecutor.class)
.annotatedWith(StreamCommandExecutor.class)
.toProvider(StreamCommandExecutorProvider.class)
.in(SINGLETON);
bind(QueueProvider.class).to(CommandExecutorQueueProvider.class);
bind(GSSAuthenticator.class).to(GerritGSSAuthenticator.class);
bind(PublickeyAuthenticator.class).to(CachingPublicKeyAuthenticator.class);
bind(ModuleGenerator.class).to(SshAutoRegisterModuleGenerator.class);
bind(SshPluginStarterCallback.class);
bind(StartPluginListener.class)
.annotatedWith(UniqueAnnotations.create())
.to(SshPluginStarterCallback.class);
bind(ReloadPluginListener.class)
.annotatedWith(UniqueAnnotations.create())
.to(SshPluginStarterCallback.class);
DynamicItem.itemOf(binder(), SshCreateCommandInterceptor.class);
DynamicSet.setOf(binder(), SshExecuteCommandInterceptor.class);
listener().toInstance(registerInParentInjectors());
listener().to(SshLog.class);
listener().to(SshDaemon.class);
listener().to(CommandFactoryProvider.class);
}
private void configureAliases() {
CommandName gerrit = Commands.named("gerrit");
for (Map.Entry<String, String> e : aliases.entrySet()) {
String name = e.getKey();
List<String> dest = Splitter.on(CharMatcher.whitespace()).splitToList(e.getValue());
CommandName cmd = Commands.named(dest.get(0));
for (int i = 1; i < dest.size(); i++) {
cmd = Commands.named(cmd, dest.get(i));
}
bind(Commands.key(gerrit, name)).toProvider(new AliasCommandProvider(cmd));
}
}
private void configureRequestScope() {
bind(SshScope.Context.class).toProvider(SshScope.ContextProvider.class);
bind(SshSession.class).toProvider(SshScope.SshSessionProvider.class).in(SshScope.REQUEST);
bind(SocketAddress.class)
.annotatedWith(RemotePeer.class)
.toProvider(SshRemotePeerProvider.class)
.in(SshScope.REQUEST);
bind(ScheduledThreadPoolExecutor.class)
.annotatedWith(CommandExecutor.class)
.toProvider(CommandExecutorProvider.class)
.in(SshScope.REQUEST);
install(new GerritRequestModule());
}
}