274 lines
7.3 KiB
Java
274 lines
7.3 KiB
Java
/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
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/*
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Copyright (c) 2002-2015 ymnk, JCraft,Inc. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the distribution.
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3. The names of the authors may not be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
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INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package com.jcraft.jsch;
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import java.net.*;
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class ChannelX11 extends Channel{
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static private final int LOCAL_WINDOW_SIZE_MAX=0x20000;
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static private final int LOCAL_MAXIMUM_PACKET_SIZE=0x4000;
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static private final int TIMEOUT=10*1000;
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private static String host="127.0.0.1";
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private static int port=6000;
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private boolean init=true;
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static byte[] cookie=null;
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private static byte[] cookie_hex=null;
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private static java.util.Hashtable faked_cookie_pool=new java.util.Hashtable();
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private static java.util.Hashtable faked_cookie_hex_pool=new java.util.Hashtable();
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private static byte[] table={0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
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0x61,0x62,0x63,0x64,0x65,0x66};
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private Socket socket = null;
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static int revtable(byte foo){
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for(int i=0; i<table.length; i++){
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if(table[i]==foo)return i;
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}
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return 0;
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}
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static void setCookie(String foo){
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cookie_hex=Util.str2byte(foo);
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cookie=new byte[16];
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for(int i=0; i<16; i++){
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cookie[i]=(byte)(((revtable(cookie_hex[i*2])<<4)&0xf0) |
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((revtable(cookie_hex[i*2+1]))&0xf));
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}
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}
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static void setHost(String foo){ host=foo; }
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static void setPort(int foo){ port=foo; }
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static byte[] getFakedCookie(Session session){
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synchronized(faked_cookie_hex_pool){
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byte[] foo=(byte[])faked_cookie_hex_pool.get(session);
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if(foo==null){
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Random random=Session.random;
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foo=new byte[16];
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synchronized(random){
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random.fill(foo, 0, 16);
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}
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/*
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System.err.print("faked_cookie: ");
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for(int i=0; i<foo.length; i++){
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System.err.print(Integer.toHexString(foo[i]&0xff)+":");
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}
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System.err.println("");
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*/
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faked_cookie_pool.put(session, foo);
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byte[] bar=new byte[32];
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for(int i=0; i<16; i++){
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bar[2*i]=table[(foo[i]>>>4)&0xf];
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bar[2*i+1]=table[(foo[i])&0xf];
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}
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faked_cookie_hex_pool.put(session, bar);
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foo=bar;
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}
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return foo;
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}
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}
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static void removeFakedCookie(Session session){
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synchronized(faked_cookie_hex_pool){
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faked_cookie_hex_pool.remove(session);
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faked_cookie_pool.remove(session);
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}
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}
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ChannelX11(){
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super();
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setLocalWindowSizeMax(LOCAL_WINDOW_SIZE_MAX);
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setLocalWindowSize(LOCAL_WINDOW_SIZE_MAX);
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setLocalPacketSize(LOCAL_MAXIMUM_PACKET_SIZE);
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type=Util.str2byte("x11");
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connected=true;
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/*
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try{
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socket=Util.createSocket(host, port, TIMEOUT);
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socket.setTcpNoDelay(true);
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io=new IO();
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io.setInputStream(socket.getInputStream());
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io.setOutputStream(socket.getOutputStream());
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}
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catch(Exception e){
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//System.err.println(e);
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}
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*/
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}
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public void run(){
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try{
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socket=Util.createSocket(host, port, TIMEOUT);
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socket.setTcpNoDelay(true);
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io=new IO();
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io.setInputStream(socket.getInputStream());
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io.setOutputStream(socket.getOutputStream());
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sendOpenConfirmation();
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}
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catch(Exception e){
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sendOpenFailure(SSH_OPEN_ADMINISTRATIVELY_PROHIBITED);
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close=true;
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disconnect();
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return;
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}
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thread=Thread.currentThread();
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Buffer buf=new Buffer(rmpsize);
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Packet packet=new Packet(buf);
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int i=0;
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try{
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while(thread!=null &&
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io!=null &&
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io.in!=null){
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i=io.in.read(buf.buffer,
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14,
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buf.buffer.length-14-Session.buffer_margin);
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if(i<=0){
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eof();
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break;
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}
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if(close)break;
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packet.reset();
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buf.putByte((byte)Session.SSH_MSG_CHANNEL_DATA);
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buf.putInt(recipient);
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buf.putInt(i);
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buf.skip(i);
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getSession().write(packet, this, i);
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}
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}
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catch(Exception e){
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//System.err.println(e);
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}
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disconnect();
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}
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private byte[] cache=new byte[0];
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private byte[] addCache(byte[] foo, int s, int l){
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byte[] bar=new byte[cache.length+l];
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System.arraycopy(foo, s, bar, cache.length, l);
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if(cache.length>0)
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System.arraycopy(cache, 0, bar, 0, cache.length);
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cache=bar;
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return cache;
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}
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void write(byte[] foo, int s, int l) throws java.io.IOException {
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//if(eof_local)return;
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if(init){
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Session _session=null;
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try{
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_session=getSession();
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}
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catch(JSchException e){
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throw new java.io.IOException(e.toString());
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}
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foo=addCache(foo, s, l);
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s=0;
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l=foo.length;
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if(l<9)
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return;
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int plen=(foo[s+6]&0xff)*256+(foo[s+7]&0xff);
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int dlen=(foo[s+8]&0xff)*256+(foo[s+9]&0xff);
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if((foo[s]&0xff)==0x42){
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}
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else if((foo[s]&0xff)==0x6c){
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plen=((plen>>>8)&0xff)|((plen<<8)&0xff00);
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dlen=((dlen>>>8)&0xff)|((dlen<<8)&0xff00);
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}
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else{
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// ??
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}
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if(l<12+plen+((-plen)&3)+dlen)
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return;
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byte[] bar=new byte[dlen];
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System.arraycopy(foo, s+12+plen+((-plen)&3), bar, 0, dlen);
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byte[] faked_cookie=null;
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synchronized(faked_cookie_pool){
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faked_cookie=(byte[])faked_cookie_pool.get(_session);
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}
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/*
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System.err.print("faked_cookie: ");
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for(int i=0; i<faked_cookie.length; i++){
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System.err.print(Integer.toHexString(faked_cookie[i]&0xff)+":");
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}
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System.err.println("");
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System.err.print("bar: ");
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for(int i=0; i<bar.length; i++){
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System.err.print(Integer.toHexString(bar[i]&0xff)+":");
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}
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System.err.println("");
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*/
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if(equals(bar, faked_cookie)){
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if(cookie!=null)
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System.arraycopy(cookie, 0, foo, s+12+plen+((-plen)&3), dlen);
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}
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else{
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//System.err.println("wrong cookie");
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thread=null;
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eof();
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io.close();
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disconnect();
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}
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init=false;
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io.put(foo, s, l);
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cache=null;
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return;
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}
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io.put(foo, s, l);
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}
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private static boolean equals(byte[] foo, byte[] bar){
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if(foo.length!=bar.length)return false;
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for(int i=0; i<foo.length; i++){
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if(foo[i]!=bar[i])return false;
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}
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return true;
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}
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}
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