jhttptunnelclient.java

可以在cmwap上用socket的代码,cmwap是只能用http协议的,但这个可以帮你实现socket来连接.

/* -*-mode:java; c-basic-offset:2; -*- */
/*
Copyright (c) 2004 ymnk, JCraft,Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice,
     this list of conditions and the following disclaimer.

  2. Redistributions in binary form must reproduce the above copyright 
     notice, this list of conditions and the following disclaimer in 
     the documentation and/or other materials provided with the distribution.

  3. The names of the authors may not be used to endorse or promote products
     derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

package com.jcraft.jhttptunnel;

import java.io.*;

public class JHttpTunnelClient{
//  static final private int CONTENT_LENGTH=1024;
  static final private int CONTENT_LENGTH=1024*10;

  private boolean init=false;
  private boolean closed=false;

  private String dest_host=null;
  private int dest_port=0;
  private Proxy proxy=null;

  private InBound ib=null;
  private OutBound ob=null;

//  private int sendCount=CONTENT_LENGTH;

  public JHttpTunnelClient(String host, int port){
    this.dest_host=host;
    this.dest_port=port;
  }
  public void setProxy(String host, int port){
    this.proxy=new Proxy(host, port);
  }

  public void connect() throws JHttpTunnelException{

    if(ib==null){
      /*
      try{
	Class c=Class.forName("com.jcraft.jhttptunnel.InBoundSocket");
	ib=(InBound)c.newInstance();
      }
      catch(Exception e){}
      */
      throw new JHttpTunnelException("InBound is not given");
    }
    ib.setHost(dest_host);
    ib.setPort(dest_port);
    ib.setProxy(proxy);

    if(ob==null){
      /*
      try{
	Class c=Class.forName("com.jcraft.jhttptunnel.OutBoundSocket");
	ob=(OutBound)c.newInstance();
      }
      catch(Exception e){}
      */
      throw new JHttpTunnelException("OutBound is not given");
    }
    ob.setHost(dest_host);
    ob.setPort(dest_port);
    ob.setProxy(proxy);
    ob.setContentLength(CONTENT_LENGTH);

    try{
      getOutbound();
      getInbound();
    }
    catch(Exception e){
      throw new JHttpTunnelException(e.toString());
    }
  }

  private void getOutbound() throws IOException{
//    System.out.println("getOutbound()");
    if(closed){
      throw new IOException("broken pipe");
    }
    ob.connect();
    if(!init){
      openChannel(1);
      init=true;
    }
  }

  private void getInbound() throws IOException{
//    System.out.println("getInbound()");
    ib.connect();
  }

  private byte[] command=new byte[4];
  public void openChannel(int i) throws IOException{
    command[0]=JHttpTunnel.TUNNEL_OPEN;
    command[1]=0;
    command[2]=1;
    command[3]=0;
    ob.sendData(command, 0, 4, true);
  }
  public void sendDisconnect() throws IOException{
//System.out.println("sendDisconnect: "+sendCount);
    command[0]=JHttpTunnel.TUNNEL_DISCONNECT;
    ob.sendData(command, 0, 1, true);
  }
  public void sendClose() throws IOException{
//System.out.println("sendClose: ");
    command[0]=JHttpTunnel.TUNNEL_CLOSE;
    ob.sendData(command, 0, 1, true);
  }
  public void sendPad1(boolean flush) throws IOException{
    command[0]=JHttpTunnel.TUNNEL_PAD1;
    ob.sendData(command, 0, 1, flush);
  }
  public void write(byte[] foo, int s, int l) throws IOException{
    //System.out.println("write: l="+l+", sendCount="+sendCount);

    if(l<=0) return;

    if(ob.sendCount<=4){
//System.out.println("ob.sendCount<=4: "+ob.sendCount);
      if(0<ob.sendCount){
        while(ob.sendCount>1){
  	  sendPad1(false);
        }
        sendDisconnect();
      }
      getOutbound();
    }

    while((ob.sendCount-1-3)<l){
      int len=(ob.sendCount-1-3);
      command[0]=JHttpTunnel.TUNNEL_DATA;
      command[1]=(byte)((len>>>8)&0xff);
      command[2]=(byte)(len&0xff);
//System.out.println("send "+(len));
      ob.sendData(command, 0, 3, true);
      ob.sendData(foo, s, len, true);
      s+=len;
      l-=len;

//      sendCount=1;

      sendDisconnect();
      if(l>0){
	getOutbound();
      }
    }
    if(l<=0)return;

    command[0]=JHttpTunnel.TUNNEL_DATA;
    command[1]=(byte)((l>>>8)&0xff);
    command[2]=(byte)(l&0xff);
    ob.sendData(command, 0, 3, false);
    ob.sendData(foo, s, l, true);
  }     

  int buf_len=0;
  public int read(byte[] foo, int s, int l) throws IOException{
    if(closed)return -1;

    try{
      if(buf_len>0){
	int len=buf_len;
	if(l<buf_len){
	  len=l;
	}
	int i=ib.receiveData(foo, s, len);
	buf_len-=i;
	return i;
      }      

      int len=0;
      while(!closed){
	int i=ib.receiveData(foo, s, 1);
	if(i<=0){
	  return -1;
	}
	int request=foo[s]&0xff;
	//System.out.println("request: "+request);
	if((request&JHttpTunnel.TUNNEL_SIMPLE)==0){
	  i=ib.receiveData(foo, s, 1);
	  len=(((foo[s])<<8)&0xff00);
	  i=ib.receiveData(foo, s, 1);
	  len=len|(foo[s]&0xff);
	}
	//System.out.println("request: "+request);
	switch(request){
  	case JHttpTunnel.TUNNEL_DATA:
	  buf_len=len;
//System.out.println("buf_len="+buf_len);
	  if(l<buf_len){
	    len=l;
	  }
	  int orgs=s;
	  while(len>0){
	    i=ib.receiveData(foo, s, len);
	    if(i<0)break;
	    buf_len-=i;
	    s+=i;
	    len-=i;
	  }
//System.out.println("receiveData: "+(s-orgs));
	  return s-orgs;
	case JHttpTunnel.TUNNEL_PADDING:
	  ib.receiveData(null, 0, len);
	  continue;
	case JHttpTunnel.TUNNEL_ERROR:
	  byte[] error=new byte[len];
	  ib.receiveData(error, 0, len);
//	  System.out.println(new String(error, 0, len)); 
	  throw new IOException("JHttpTunnel: "+new String(error, 0, len)); 
	case JHttpTunnel.TUNNEL_PAD1:
	    continue;
	case JHttpTunnel.TUNNEL_CLOSE:
	  closed=true;
	  //close();
//	  System.out.println("CLOSE");
	  break;
	case JHttpTunnel.TUNNEL_DISCONNECT:
//	  System.out.println("DISCONNECT");
	  continue;
	default:
//	  System.out.println("request="+request);
//	  System.out.println(Integer.toHexString(request&0xff)+ " "+new Character((char)request));
	  throw new IOException("JHttpTunnel: protocol error 0x"+Integer.toHexString(request&0xff));
	}
      }
    }
    catch(IOException e){
      throw e;
    }
    catch(Exception e){
//    System.out.println("JHttpTunnelClient.read: "+e);
    }
    return -1;
  }     

  private InputStream in=null;
  public InputStream getInputStream(){
    if(in!=null) return in;
    in=
      new InputStream(){
        byte[] tmp=new byte[1];
	public int read() throws IOException{
	  int i=JHttpTunnelClient.this.read(tmp, 0, 1);
	  return (i==-1?-1:tmp[0]);
	}
	public int read(byte[] foo) throws IOException{
	  return JHttpTunnelClient.this.read(foo, 0, foo.length);
	}
	public int read(byte[] foo, int s, int l) throws IOException{
	  return JHttpTunnelClient.this.read(foo, s, l);
	}
      };
    return in;
  }

  private OutputStream out=null;
  public OutputStream getOutputStream(){
    if(out!=null) return out;
    out=
      new OutputStream(){
        final byte[] tmp=new byte[1];
	public void write(int foo) throws IOException{
	  tmp[0]=(byte)foo;
	  JHttpTunnelClient.this.write(tmp, 0, 1);
	}
	public void write(byte[] foo) throws IOException{
	  JHttpTunnelClient.this.write(foo, 0, foo.length);
	}
	public void write(byte[] foo, int s, int l) throws IOException{
	  JHttpTunnelClient.this.write(foo, s, l);
	}
      };
    return out;
  }

  public void close(){
    //System.out.println("close");
    try{sendClose();}catch(Exception e){}
    try{ib.close();}catch(Exception e){}
    try{ob.close();}catch(Exception e){}
    closed=true;
  }

  public void setInBound(InBound ib){ this.ib=ib; }
  public void setOutBound(OutBound ob){ this.ob=ob; }

  /*
  public static void main(String[] arg){
    try{

      if(arg.length==0){
	System.err.println("Enter hostname[:port]");
	System.exit(1);
      }

      String host=arg[0];
      int hport=8888;
      if(host.indexOf(':')!=-1){
	hport=Integer.parseInt(host.substring(host.lastIndexOf(':') + 1));
	host=host.substring(0, host.lastIndexOf(':'));
      }

      int port=2323;
      String _port=System.getProperty("F");
      if(_port!=null){
	port=Integer.parseInt(_port);
      }

      String proxy_host=System.getProperty("P");
      int proxy_port=8080;
      if(proxy_host!=null && proxy_host.indexOf(':')!=-1){
	proxy_port=Integer.parseInt(proxy_host.substring(proxy_host.lastIndexOf(':') + 1));
	proxy_host=proxy_host.substring(0, proxy_host.lastIndexOf(':'));
      }

      ServerSocket ss=new ServerSocket(port);
      while(true){
	final Socket socket=ss.accept();
	socket.setTcpNoDelay(true);

	//System.out.println("accept: "+socket);

        final InputStream sin=socket.getInputStream();
        final OutputStream sout=socket.getOutputStream();

	final JHttpTunnelClient jhtc=new JHttpTunnelClient(host, hport);
	if(proxy_host!=null){
	  jhtc.setProxy(proxy_host, proxy_port);
	}

//	jhtc.setInBound(new InBoundURL());
//	jhtc.setOutBound(new OutBoundURL());

	jhtc.setInBound(new InBoundSocket());
	jhtc.setOutBound(new OutBoundSocket());

	jhtc.connect();
        final InputStream jin=jhtc.getInputStream();
        final OutputStream jout=jhtc.getOutputStream();

	Runnable runnable=new Runnable(){
	    public void run(){
	      byte[] tmp=new byte[1024];
	      try{
		while(true){
		  int i=jin.read(tmp);
		  if(i>0){
		    sout.write(tmp, 0, i);
		    continue;
		  }
		  break;
		}
	      }
	      catch(Exception e){
	      }
	      try{
		sout.close();
		sin.close();
		socket.close();
		jin.close();
		jhtc.close();
	      }
	      catch(Exception e){
	      }
	    }
	  };
	(new Thread(runnable)).start();

	byte[] tmp=new byte[1024];
	try{
	  while(true){
	    int i=sin.read(tmp);
	    if(i>0){
	      jout.write(tmp, 0, i);
	      continue;
	    }
	    break;
	  }
	}
	catch(Exception e){
	}
	try{
	  socket.close();
	  jin.close();
	  jhtc.close();
	}
	catch(Exception e){
	}
      }
    }
    catch(JHttpTunnelException e){
      System.err.println(e);
    }
    catch(IOException e){
      System.err.println(e);
    }
  }
  */
}