277 lines
7.4 KiB
Java
277 lines
7.4 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.util.*;
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class ChannelSession extends Channel{
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private static byte[] _session=Util.str2byte("session");
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protected boolean agent_forwarding=false;
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protected boolean xforwading=false;
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protected Hashtable env=null;
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protected boolean pty=false;
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protected String ttype="vt100";
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protected int tcol=80;
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protected int trow=24;
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protected int twp=640;
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protected int thp=480;
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protected byte[] terminal_mode=null;
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ChannelSession(){
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super();
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type=_session;
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io=new IO();
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}
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/**
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* Enable the agent forwarding.
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*
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* @param enable
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*/
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public void setAgentForwarding(boolean enable){
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agent_forwarding=enable;
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}
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/**
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* Enable the X11 forwarding.
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* Refer to RFC4254 6.3.1. Requesting X11 Forwarding.
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*
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* @param enable
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*/
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public void setXForwarding(boolean enable){
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xforwading=enable;
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}
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/**
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* @deprecated Use {@link #setEnv(String, String)} or {@link #setEnv(byte[], byte[])} instead.
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* @see #setEnv(String, String)
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* @see #setEnv(byte[], byte[])
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*/
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public void setEnv(Hashtable env){
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synchronized(this){
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this.env=env;
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}
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}
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/**
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* Set the environment variable.
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* If <code>name</code> and <code>value</code> are needed to be passed
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* to the remote in your favorite encoding,
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* use {@link #setEnv(byte[], byte[])}.
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* Refer to RFC4254 6.4 Environment Variable Passing.
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*
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* @param name A name for environment variable.
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* @param value A value for environment variable.
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*/
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public void setEnv(String name, String value){
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setEnv(Util.str2byte(name), Util.str2byte(value));
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}
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/**
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* Set the environment variable.
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* Refer to RFC4254 6.4 Environment Variable Passing.
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*
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* @param name A name of environment variable.
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* @param value A value of environment variable.
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* @see #setEnv(String, String)
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*/
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public void setEnv(byte[] name, byte[] value){
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synchronized(this){
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getEnv().put(name, value);
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}
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}
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private Hashtable getEnv(){
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if(env==null)
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env=new Hashtable();
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return env;
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}
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/**
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* Allocate a Pseudo-Terminal.
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* Refer to RFC4254 6.2. Requesting a Pseudo-Terminal.
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*
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* @param enable
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*/
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public void setPty(boolean enable){
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pty=enable;
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}
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/**
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* Set the terminal mode.
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*
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* @param terminal_mode
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*/
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public void setTerminalMode(byte[] terminal_mode){
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this.terminal_mode=terminal_mode;
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}
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/**
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* Change the window dimension interactively.
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* Refer to RFC4254 6.7. Window Dimension Change Message.
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*
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* @param col terminal width, columns
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* @param row terminal height, rows
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* @param wp terminal width, pixels
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* @param hp terminal height, pixels
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*/
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public void setPtySize(int col, int row, int wp, int hp){
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setPtyType(this.ttype, col, row, wp, hp);
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if(!pty || !isConnected()){
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return;
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}
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try{
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RequestWindowChange request=new RequestWindowChange();
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request.setSize(col, row, wp, hp);
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request.request(getSession(), this);
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}
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catch(Exception e){
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//System.err.println("ChannelSessio.setPtySize: "+e);
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}
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}
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/**
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* Set the terminal type.
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* This method is not effective after Channel#connect().
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*
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* @param ttype terminal type(for example, "vt100")
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* @see #setPtyType(String, int, int, int, int)
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*/
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public void setPtyType(String ttype){
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setPtyType(ttype, 80, 24, 640, 480);
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}
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/**
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* Set the terminal type.
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* This method is not effective after Channel#connect().
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*
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* @param ttype terminal type(for example, "vt100")
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* @param col terminal width, columns
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* @param row terminal height, rows
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* @param wp terminal width, pixels
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* @param hp terminal height, pixels
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*/
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public void setPtyType(String ttype, int col, int row, int wp, int hp){
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this.ttype=ttype;
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this.tcol=col;
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this.trow=row;
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this.twp=wp;
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this.thp=hp;
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}
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protected void sendRequests() throws Exception{
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Session _session=getSession();
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Request request;
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if(agent_forwarding){
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request=new RequestAgentForwarding();
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request.request(_session, this);
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}
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if(xforwading){
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request=new RequestX11();
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request.request(_session, this);
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}
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if(pty){
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request=new RequestPtyReq();
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((RequestPtyReq)request).setTType(ttype);
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((RequestPtyReq)request).setTSize(tcol, trow, twp, thp);
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if(terminal_mode!=null){
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((RequestPtyReq)request).setTerminalMode(terminal_mode);
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}
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request.request(_session, this);
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}
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if(env!=null){
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for(Enumeration _env=env.keys(); _env.hasMoreElements();){
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Object name=_env.nextElement();
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Object value=env.get(name);
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request=new RequestEnv();
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((RequestEnv)request).setEnv(toByteArray(name),
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toByteArray(value));
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request.request(_session, this);
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}
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}
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}
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private byte[] toByteArray(Object o){
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if(o instanceof String){
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return Util.str2byte((String)o);
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}
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return (byte[])o;
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}
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public void run(){
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//System.err.println(this+":run >");
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Buffer buf=new Buffer(rmpsize);
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Packet packet=new Packet(buf);
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int i=-1;
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try{
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while(isConnected() &&
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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
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-Session.buffer_margin
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);
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if(i==0)continue;
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if(i==-1){
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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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//System.out.println("write: "+i);
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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("# ChannelExec.run");
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//e.printStackTrace();
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}
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Thread _thread=thread;
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if(_thread!=null){
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synchronized(_thread){ _thread.notifyAll(); }
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}
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thread=null;
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//System.err.println(this+":run <");
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}
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}
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