/*
* Copyright (C)2009 - SSHJ Contributors
*
* 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.hierynomus.sshj.test;
import net.schmizz.sshj.Config;
import net.schmizz.sshj.DefaultConfig;
import net.schmizz.sshj.SSHClient;
import net.schmizz.sshj.util.gss.BogusGSSAuthenticator;
import org.apache.sshd.common.NamedFactory;
import org.apache.sshd.common.keyprovider.AbstractClassLoadableResourceKeyPairProvider;
import org.apache.sshd.common.util.SecurityUtils;
import org.apache.sshd.server.Command;
import org.apache.sshd.server.CommandFactory;
import org.apache.sshd.server.SshServer;
import org.apache.sshd.server.auth.password.PasswordAuthenticator;
import org.apache.sshd.server.scp.ScpCommandFactory;
import org.apache.sshd.server.session.ServerSession;
import org.apache.sshd.server.shell.ProcessShellFactory;
import org.apache.sshd.server.subsystem.sftp.SftpSubsystemFactory;
import org.junit.rules.ExternalResource;
import java.io.IOException;
import java.net.ServerSocket;
import java.util.Arrays;
import java.util.Collections;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Can be used as a rule to ensure the server is teared down after each test.
*/
public class SshFixture extends ExternalResource {
public static final String hostkey = "hostkey.pem";
public static final String fingerprint = "ce:a7:c1:cf:17:3f:96:49:6a:53:1a:05:0b:ba:90:db";
private SshServer server = defaultSshServer();
private SSHClient client = null;
private AtomicBoolean started = new AtomicBoolean(false);
private boolean autoStart = true;
public SshFixture(boolean autoStart) {
this.autoStart = autoStart;
}
public SshFixture() {
}
@Override
protected void before() throws Throwable {
if (autoStart) {
start();
}
}
@Override
protected void after() {
stopClient();
stopServer();
}
public void start() throws IOException {
if (!started.getAndSet(true)) {
server.start();
}
}
public SSHClient setupConnectedDefaultClient() throws IOException {
return connectClient(setupDefaultClient());
}
public SSHClient setupDefaultClient() {
return setupClient(new DefaultConfig());
}
public SSHClient setupClient(Config config) {
if (client == null) {
client = new SSHClient(config);
client.addHostKeyVerifier(fingerprint);
}
return client;
}
public SSHClient getClient() {
if (client != null) {
return client;
}
throw new IllegalStateException("First call one of the setup*Client methods");
}
public SSHClient connectClient(SSHClient client) throws IOException {
client.connect(server.getHost(), server.getPort());
return client;
}
private SshServer defaultSshServer() {
SshServer sshServer = SshServer.setUpDefaultServer();
sshServer.setPort(randomPort());
AbstractClassLoadableResourceKeyPairProvider fileKeyPairProvider = SecurityUtils.createClassLoadableResourceKeyPairProvider();
fileKeyPairProvider.setResources(Collections.singletonList(hostkey));
sshServer.setKeyPairProvider(fileKeyPairProvider);
sshServer.setPasswordAuthenticator(new PasswordAuthenticator() {
@Override
public boolean authenticate(String username, String password, ServerSession session) {
return username.equals(password);
}
});
sshServer.setGSSAuthenticator(new BogusGSSAuthenticator());
sshServer.setSubsystemFactories(Arrays.<NamedFactory<Command>>asList(new SftpSubsystemFactory()));
ScpCommandFactory commandFactory = new ScpCommandFactory();
commandFactory.setDelegateCommandFactory(new CommandFactory() {
@Override
public Command createCommand(String command) {
return new ProcessShellFactory(command.split(" ")).create();
}
});
sshServer.setCommandFactory(commandFactory);
return sshServer;
}
private int randomPort() {
try {
ServerSocket s = null;
try {
s = new ServerSocket(0);
return s.getLocalPort();
} finally {
if (s != null)
s.close();
}
} catch (IOException e) {
throw new RuntimeException(e);
}
}
public void stopClient() {
if (client != null && client.isConnected()) {
try {
client.disconnect();
} catch (IOException e) {
throw new RuntimeException(e);
} finally {
client = null;
}
} else if (client != null) {
client = null;
}
}
public void stopServer() {
if (started.getAndSet(false)) {
try {
server.stop(true);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
public SshServer getServer() {
return server;
}
}