| package org.apache.maven.it; |
| |
| /* |
| * 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. |
| */ |
| |
| 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(); |
| } |
| } |
| } |
| |
| } |
| |
| } |