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// Copyright (C) 2017 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.plugin;
import com.google.gerrit.extensions.registration.DynamicItem;
import com.google.gerrit.server.CurrentUser;
import com.google.gerrit.server.config.GerritServerConfig;
import com.google.gerrit.sshd.CommandModule;
import com.google.gerrit.sshd.SshCommand;
import com.google.inject.Inject;
import com.google.inject.Provider;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jgit.lib.Config;
import org.kohsuke.args4j.Argument;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class LfsPluginAuthCommand extends SshCommand {
private static final Logger log = LoggerFactory.getLogger(LfsPluginAuthCommand.class);
private static final String CONFIGURATION_ERROR =
"Server configuration error: LFS auth over SSH is not properly configured.";
public interface LfsSshPluginAuth {
String authenticate(CurrentUser user, List<String> args) throws UnloggedFailure, Failure;
}
public static class Module extends CommandModule {
private final boolean pluginProvided;
@Inject
Module(@GerritServerConfig Config cfg) {
pluginProvided = cfg.getString("lfs", null, "plugin") != null;
}
@Override
protected void configure() {
if (pluginProvided) {
command("git-lfs-authenticate").to(LfsPluginAuthCommand.class);
DynamicItem.itemOf(binder(), LfsSshPluginAuth.class);
}
}
}
private final DynamicItem<LfsSshPluginAuth> auth;
private final Provider<CurrentUser> user;
@Argument(index = 0, multiValued = true, metaVar = "PARAMS")
private List<String> args = new ArrayList<>();
@Inject
LfsPluginAuthCommand(DynamicItem<LfsSshPluginAuth> auth, Provider<CurrentUser> user) {
this.auth = auth;
this.user = user;
}
@Override
protected void run() throws UnloggedFailure, Exception {
LfsSshPluginAuth pluginAuth = auth.get();
if (pluginAuth == null) {
log.warn(CONFIGURATION_ERROR);
throw new UnloggedFailure(1, CONFIGURATION_ERROR);
}
stdout.print(pluginAuth.authenticate(user.get(), args));
}
}
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