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/*
* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import jdk.test.lib.Utils;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
import org.junit.jupiter.api.Test;
import java.io.IOException;
import java.net.Authenticator;
import java.net.InetSocketAddress;
import java.net.PasswordAuthentication;
import java.net.Proxy;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.SocketException;
import static java.net.InetAddress.getLoopbackAddress;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;
/*
* @test
* @bug 8346017
* @summary Verifies the `connect()` behaviour of a SOCKS proxy socket. In particular, that passing a resolvable
* unresolved address doesn't throw an exception.
* @library /test/lib /java/net/Socks
* @build SocksServer
* @run junit ConnectSocksProxyTest
*/
class ConnectSocksProxyTest {
// Implementation Note: Explicitly binding on the loopback address to avoid potential unstabilities.
private static final int DEAD_SERVER_PORT = 0xDEAD;
private static final InetSocketAddress REFUSING_SOCKET_ADDRESS = Utils.refusingEndpoint();
private static final InetSocketAddress UNRESOLVED_ADDRESS =
InetSocketAddress.createUnresolved("no.such.host", DEAD_SERVER_PORT);
private static final String PROXY_AUTH_USERNAME = "foo";
private static final String PROXY_AUTH_PASSWORD = "bar";
private static SocksServer PROXY_SERVER;
private static Proxy PROXY;
@BeforeAll
static void initAuthenticator() {
Authenticator.setDefault(new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(PROXY_AUTH_USERNAME, PROXY_AUTH_PASSWORD.toCharArray());
}
});
}
@BeforeAll
static void initProxyServer() throws IOException {
PROXY_SERVER = new SocksServer(getLoopbackAddress(), 0, false);
PROXY_SERVER.addUser(PROXY_AUTH_USERNAME, PROXY_AUTH_PASSWORD);
PROXY_SERVER.start();
InetSocketAddress proxyAddress = new InetSocketAddress(getLoopbackAddress(), PROXY_SERVER.getPort());
PROXY = new Proxy(Proxy.Type.SOCKS, proxyAddress);
}
@AfterAll
static void stopProxyServer() {
PROXY_SERVER.close();
}
@Test
void testUnresolvedAddress() {
assertTrue(UNRESOLVED_ADDRESS.isUnresolved());
}
/**
* Verifies that an unbound socket is closed when {@code connect()} fails.
*/
@Test
void testUnboundSocket() throws IOException {
try (Socket socket = createProxiedSocket()) {
assertFalse(socket.isBound());
assertFalse(socket.isConnected());
assertThrows(IOException.class, () -> socket.connect(REFUSING_SOCKET_ADDRESS));
assertTrue(socket.isClosed());
}
}
/**
* Verifies that a bound socket is closed when {@code connect()} fails.
*/
@Test
void testBoundSocket() throws IOException {
try (Socket socket = createProxiedSocket()) {
socket.bind(new InetSocketAddress(getLoopbackAddress(), 0));
assertTrue(socket.isBound());
assertFalse(socket.isConnected());
assertThrows(IOException.class, () -> socket.connect(REFUSING_SOCKET_ADDRESS));
assertTrue(socket.isClosed());
}
}
/**
* Verifies that a connected socket is not closed when {@code connect()} fails.
*/
@Test
void testConnectedSocket() throws Throwable {
try (Socket socket = createProxiedSocket();
ServerSocket serverSocket = createEphemeralServerSocket()) {
socket.connect(serverSocket.getLocalSocketAddress());
try (Socket _ = serverSocket.accept()) {
assertTrue(socket.isBound());
assertTrue(socket.isConnected());
SocketException exception = assertThrows(
SocketException.class,
() -> socket.connect(REFUSING_SOCKET_ADDRESS));
assertEquals("Already connected", exception.getMessage());
assertFalse(socket.isClosed());
}
}
}
/**
* Delegates to {@link #testUnconnectedSocketWithUnresolvedAddress(boolean, Socket)} using an unbound socket.
*/
@Test
void testUnboundSocketWithUnresolvedAddress() throws IOException {
try (Socket socket = createProxiedSocket()) {
assertFalse(socket.isBound());
assertFalse(socket.isConnected());
testUnconnectedSocketWithUnresolvedAddress(false, socket);
}
}
/**
* Delegates to {@link #testUnconnectedSocketWithUnresolvedAddress(boolean, Socket)} using a bound socket.
*/
@Test
void testBoundSocketWithUnresolvedAddress() throws IOException {
try (Socket socket = createProxiedSocket()) {
socket.bind(new InetSocketAddress(getLoopbackAddress(), 0));
testUnconnectedSocketWithUnresolvedAddress(true, socket);
}
}
/**
* Verifies the behaviour of an unconnected socket when {@code connect()} is invoked using an unresolved address.
*/
private static void testUnconnectedSocketWithUnresolvedAddress(boolean bound, Socket socket) throws IOException {
assertEquals(bound, socket.isBound());
assertFalse(socket.isConnected());
try (ServerSocket serverSocket = createEphemeralServerSocket()) {
InetSocketAddress unresolvedAddress = InetSocketAddress.createUnresolved(
getLoopbackAddress().getHostAddress(),
serverSocket.getLocalPort());
socket.connect(unresolvedAddress);
try (Socket _ = serverSocket.accept()) {
assertTrue(socket.isBound());
assertTrue(socket.isConnected());
assertFalse(socket.isClosed());
}
}
}
/**
* Verifies that a connected socket is not closed when {@code connect()} is invoked using an unresolved address.
*/
@Test
void testConnectedSocketWithUnresolvedAddress() throws Throwable {
try (Socket socket = createProxiedSocket();
ServerSocket serverSocket = createEphemeralServerSocket()) {
socket.connect(serverSocket.getLocalSocketAddress());
try (Socket _ = serverSocket.accept()) {
assertTrue(socket.isBound());
assertTrue(socket.isConnected());
SocketException exception = assertThrows(
SocketException.class,
() -> socket.connect(UNRESOLVED_ADDRESS));
assertEquals("Already connected", exception.getMessage());
assertFalse(socket.isClosed());
}
}
}
private static Socket createProxiedSocket() {
return new Socket(PROXY);
}
private static ServerSocket createEphemeralServerSocket() throws IOException {
return new ServerSocket(0, 0, getLoopbackAddress());
}
}
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