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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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test/jdk/java/net/URL/PerConnectionProxy.java Normal file
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/*
* Copyright (c) 2003, 2022, 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.
*/
/* @test
* @bug 4920526
* @summary Needs per connection proxy support for URLs
* @library /test/lib
* @compile PerConnectionProxy.java
* @run main/othervm -Dhttp.proxyHost=inexistant -Dhttp.proxyPort=8080 PerConnectionProxy
*/
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.URL;
import java.nio.charset.Charset;
import java.util.concurrent.Executors;
import com.sun.net.httpserver.HttpExchange;
import com.sun.net.httpserver.HttpHandler;
import com.sun.net.httpserver.HttpServer;
import jdk.test.lib.net.URIBuilder;
public class PerConnectionProxy {
static HttpServer server;
public static void main(String[] args) {
try {
InetAddress loopbackAddress = InetAddress.getLoopbackAddress();
server = HttpServer.create(new InetSocketAddress(loopbackAddress, 0), 10, "/", new PerConnectionProxyHandler());
server.setExecutor(Executors.newSingleThreadExecutor());
server.start();
ProxyServer pserver = new ProxyServer(loopbackAddress, server.getAddress().getPort());
// start proxy server
new Thread(pserver).start();
URL url = URIBuilder.newBuilder()
.scheme("http")
.loopback()
.port(server.getAddress().getPort())
.toURLUnchecked();
// for non existing proxy expect an IOException
try {
InetSocketAddress isa = InetSocketAddress.createUnresolved("inexistent", 8080);
Proxy proxy = new Proxy(Proxy.Type.HTTP, isa);
HttpURLConnection urlc = (HttpURLConnection)url.openConnection (proxy);
InputStream is = urlc.getInputStream ();
is.close();
throw new RuntimeException("non existing per connection proxy should lead to IOException");
} catch (IOException ioex) {
// expected
}
// for NO_PROXY, expect direct connection
try {
HttpURLConnection urlc = (HttpURLConnection)url.openConnection (Proxy.NO_PROXY);
int respCode = urlc.getResponseCode();
urlc.disconnect();
} catch (IOException ioex) {
throw new RuntimeException("direct connection should succeed :"+ioex.getMessage());
}
// for a normal proxy setting expect to see connection
// goes through that proxy
try {
InetSocketAddress isa = InetSocketAddress.createUnresolved(
loopbackAddress.getHostAddress(),
pserver.getPort());
Proxy p = new Proxy(Proxy.Type.HTTP, isa);
HttpURLConnection urlc = (HttpURLConnection)url.openConnection (p);
int respCode = urlc.getResponseCode();
urlc.disconnect();
} catch (IOException ioex) {
throw new RuntimeException("connection through a local proxy should succeed :"+ioex.getMessage());
}
} catch (Exception e) {
throw new RuntimeException(e);
} finally {
if (server != null) {
server.stop(1);
}
}
}
static class ProxyServer extends Thread {
private static ServerSocket ss = null;
// client requesting for a tunnel
private Socket clientSocket = null;
/*
* Origin server's address and port that the client
* wants to establish the tunnel for communication.
*/
private InetAddress serverInetAddr;
private int serverPort;
public ProxyServer(InetAddress server, int port) throws IOException {
serverInetAddr = server;
serverPort = port;
ss = new ServerSocket(0, 0, InetAddress.getLoopbackAddress());
}
public void run() {
try {
clientSocket = ss.accept();
processRequests();
} catch (Exception e) {
System.out.println("Proxy Failed: " + e);
e.printStackTrace();
try {
ss.close();
}
catch (IOException excep) {
System.out.println("ProxyServer close error: " + excep);
excep.printStackTrace();
}
}
}
private void processRequests() throws Exception {
// connection set to the tunneling mode
Socket serverSocket = new Socket(serverInetAddr, serverPort);
ProxyTunnel clientToServer = new ProxyTunnel(
clientSocket, serverSocket);
ProxyTunnel serverToClient = new ProxyTunnel(
serverSocket, clientSocket);
clientToServer.start();
serverToClient.start();
System.out.println("Proxy: Started tunneling.......");
clientToServer.join();
serverToClient.join();
System.out.println("Proxy: Finished tunneling........");
clientToServer.close();
serverToClient.close();
}
/**
***************************************************************
* helper methods follow
***************************************************************
*/
public int getPort() {
return ss.getLocalPort();
}
/*
* This inner class provides unidirectional data flow through the sockets
* by continuously copying bytes from the input socket onto the output
* socket, until both sockets are open and EOF has not been received.
*/
static class ProxyTunnel extends Thread {
Socket sockIn;
Socket sockOut;
InputStream input;
OutputStream output;
public ProxyTunnel(Socket sockIn, Socket sockOut)
throws Exception {
this.sockIn = sockIn;
this.sockOut = sockOut;
input = sockIn.getInputStream();
output = sockOut.getOutputStream();
}
public void run() {
int BUFFER_SIZE = 400;
byte[] buf = new byte[BUFFER_SIZE];
int bytesRead = 0;
int count = 0; // keep track of the amount of data transfer
try {
while ((bytesRead = input.read(buf)) >= 0) {
output.write(buf, 0, bytesRead);
output.flush();
count += bytesRead;
}
} catch (IOException e) {
/*
* The peer end has closed the connection
* we will close the tunnel
*/
close();
}
}
public void close() {
try {
if (!sockIn.isClosed())
sockIn.close();
if (!sockOut.isClosed())
sockOut.close();
} catch (IOException ignored) { }
}
}
}
}
class PerConnectionProxyHandler implements HttpHandler {
@Override
public void handle(HttpExchange exchange) throws IOException {
try {
exchange.sendResponseHeaders(200, 0);
} catch (IOException e) {
}
try(PrintWriter pw = new PrintWriter(exchange.getResponseBody(), false, Charset.forName("UTF-8"))) {
pw.print("Hello .");
}
}
}