/*
* 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;
import java.io.ByteArrayOutputStream;
import java.io.OutputStream;
import java.io.PipedInputStream;
import java.io.PipedOutputStream;
import java.util.Collections;
import org.apache.sshd.client.kex.DHG1;
import org.apache.sshd.client.kex.DHG14;
import org.apache.sshd.client.kex.DHGEX;
import org.apache.sshd.client.kex.DHGEX256;
import org.apache.sshd.client.kex.ECDHP256;
import org.apache.sshd.client.kex.ECDHP384;
import org.apache.sshd.client.kex.ECDHP521;
import org.apache.sshd.common.KeyExchange;
import org.apache.sshd.common.NamedFactory;
import org.apache.sshd.common.util.SecurityUtils;
import org.apache.sshd.util.BaseTest;
import org.apache.sshd.util.BogusPasswordAuthenticator;
import org.apache.sshd.util.EchoShellFactory;
import org.apache.sshd.util.TeeOutputStream;
import org.apache.sshd.util.Utils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertTrue;
/**
* Test key exchange algorithms.
*
* @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
*/
public class KexTest extends BaseTest {
private SshServer sshd;
private int port;
@Before
public void setUp() throws Exception {
port = Utils.getFreePort();
sshd = SshServer.setUpDefaultServer();
sshd.setPort(port);
sshd.setKeyPairProvider(Utils.createTestHostKeyProvider());
sshd.setShellFactory(new EchoShellFactory());
sshd.setPasswordAuthenticator(new BogusPasswordAuthenticator());
sshd.start();
}
@After
public void tearDown() throws Exception {
sshd.stop();
}
@Test
public void testDHGEX256() throws Exception {
testClient(new DHGEX256.Factory());
}
@Test
public void testDHGEX() throws Exception {
testClient(new DHGEX.Factory());
}
@Test
public void testDHG14() throws Exception {
if (SecurityUtils.isBouncyCastleRegistered()) {
testClient(new DHG14.Factory());
}
}
@Test
public void testDHG1() throws Exception {
testClient(new DHG1.Factory());
}
@Test
public void testECDHP521() throws Exception {
testClient(new ECDHP521.Factory());
}
@Test
public void testECDHP384() throws Exception {
testClient(new ECDHP384.Factory());
}
@Test
public void testECDHP256() throws Exception {
testClient(new ECDHP256.Factory());
}
private void testClient(NamedFactory<KeyExchange> kex) throws Exception {
SshClient client = SshClient.setUpDefaultClient();
ByteArrayOutputStream sent = new ByteArrayOutputStream();
ByteArrayOutputStream out = new ByteArrayOutputStream();
try {
client.setKeyExchangeFactories(Collections.singletonList(kex));
client.start();
ClientSession session = client.connect("localhost", port).await().getSession();
assertTrue(session.authPassword("smx", "smx").await().isSuccess());
ClientChannel channel = session.createChannel(ClientChannel.CHANNEL_SHELL);
PipedOutputStream pipedIn = new PipedOutputStream();
channel.setIn(new PipedInputStream(pipedIn));
OutputStream teeOut = new TeeOutputStream(sent, pipedIn);
ByteArrayOutputStream err = new ByteArrayOutputStream();
channel.setOut(out);
channel.setErr(err);
assertTrue(channel.open().await().isOpened());
teeOut.write("this is my command\n".getBytes());
teeOut.flush();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < 10; i++) {
sb.append("0123456789");
}
sb.append("\n");
teeOut.write(sb.toString().getBytes());
teeOut.write("exit\n".getBytes());
teeOut.flush();
channel.waitFor(ClientChannel.CLOSED, 0);
channel.close(false);
} finally {
client.stop();
}
assertArrayEquals(sent.toByteArray(), out.toByteArray());
}
}