| /* |
| * 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.maven.it; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.PushbackInputStream; |
| import java.net.ServerSocket; |
| import java.net.Socket; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * A simple HTTP proxy that only understands the CONNECT method to check HTTPS tunneling. |
| * |
| * @author Benjamin Bentmann |
| */ |
| public class TunnelingProxyServer implements Runnable { |
| |
| private int port; |
| |
| private volatile ServerSocket server; |
| |
| private String targetHost; |
| |
| private int targetPort; |
| |
| private String connectFilter; |
| |
| public TunnelingProxyServer(int port, String targetHost, int targetPort, String connectFilter) { |
| this.port = port; |
| this.targetHost = targetHost; |
| this.targetPort = targetPort; |
| this.connectFilter = connectFilter; |
| } |
| |
| public int getPort() { |
| return (server != null) ? server.getLocalPort() : port; |
| } |
| |
| public void start() throws IOException { |
| server = new ServerSocket(port, 4); |
| new Thread(this).start(); |
| } |
| |
| public void stop() throws IOException { |
| if (server != null) { |
| server.close(); |
| server = null; |
| } |
| } |
| |
| public void run() { |
| try { |
| while (true) { |
| new ClientHandler(server.accept()).start(); |
| } |
| } catch (Exception e) { |
| // closed |
| } |
| } |
| |
| class ClientHandler extends Thread { |
| |
| private Socket client; |
| |
| public ClientHandler(Socket client) { |
| this.client = client; |
| } |
| |
| public void run() { |
| try { |
| PushbackInputStream is = new PushbackInputStream(client.getInputStream()); |
| |
| String dest = null; |
| |
| while (true) { |
| String line = readLine(is); |
| if (line == null || line.length() <= 0) { |
| break; |
| } |
| Matcher m = Pattern.compile("CONNECT +([^:]+:[0-9]+) +.*").matcher(line); |
| if (m.matches()) { |
| dest = m.group(1); |
| } |
| } |
| |
| OutputStream os = client.getOutputStream(); |
| |
| if (dest == null || (connectFilter != null && !dest.matches(connectFilter))) { |
| os.write(("HTTP/1.0 400 Bad request for " + dest + "\r\n\r\n").getBytes("UTF-8")); |
| return; |
| } |
| |
| os.write("HTTP/1.0 200 Connection established\r\n\r\n".getBytes("UTF-8")); |
| |
| Socket server = new Socket(targetHost, targetPort); |
| |
| Thread t1 = new StreamPumper(is, server.getOutputStream()); |
| t1.start(); |
| Thread t2 = new StreamPumper(server.getInputStream(), os); |
| t2.start(); |
| t1.join(); |
| t2.join(); |
| |
| server.close(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } finally { |
| try { |
| client.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| |
| private String readLine(PushbackInputStream is) throws IOException { |
| StringBuilder buffer = new StringBuilder(1024); |
| |
| while (true) { |
| int b = is.read(); |
| if (b < 0) { |
| return null; |
| } else if (b == '\n') { |
| break; |
| } else if (b == '\r') { |
| b = is.read(); |
| if (b != '\n') { |
| is.unread(b); |
| } |
| break; |
| } else { |
| buffer.append((char) b); |
| } |
| } |
| |
| return buffer.toString(); |
| } |
| } |
| |
| static class StreamPumper extends Thread { |
| |
| private final InputStream is; |
| |
| private final OutputStream os; |
| |
| public StreamPumper(InputStream is, OutputStream os) { |
| this.is = is; |
| this.os = os; |
| } |
| |
| public void run() { |
| try { |
| for (byte[] buffer = new byte[1024 * 8]; ; ) { |
| int n = is.read(buffer); |
| if (n < 0) { |
| break; |
| } |
| os.write(buffer, 0, n); |
| } |
| } catch (IOException e) { |
| // closed |
| } finally { |
| try { |
| is.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| try { |
| os.close(); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| } |
| } |
| } |
| } |
| } |