203 lines
6.5 KiB
C#
203 lines
6.5 KiB
C#
|
using System;
|
||
|
|
||
|
namespace Tamir.SharpSsh.jsch
|
||
|
{
|
||
|
/* -*-mode:java; c-basic-offset:2; -*- */
|
||
|
/*
|
||
|
Copyright (c) 2002,2003,2004 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.
|
||
|
*/
|
||
|
|
||
|
class UserAuthKeyboardInteractive : UserAuth{
|
||
|
internal UserInfo userinfo;
|
||
|
internal UserAuthKeyboardInteractive(UserInfo userinfo){
|
||
|
this.userinfo=userinfo;
|
||
|
}
|
||
|
|
||
|
public override bool start(Session session) {
|
||
|
//System.out.println("UserAuthKeyboardInteractive: start");
|
||
|
Packet packet=session.packet;
|
||
|
Buffer buf=session.buf;
|
||
|
String username=session.username;
|
||
|
String dest=username+"@"+session.host;
|
||
|
if(session.port!=22){
|
||
|
dest+=(":"+session.port);
|
||
|
}
|
||
|
|
||
|
bool cancel=false;
|
||
|
|
||
|
byte[] _username=null;
|
||
|
try{ _username=System.Text.Encoding.UTF8.GetBytes(username); }
|
||
|
catch{
|
||
|
_username=Util.getBytes(username);
|
||
|
}
|
||
|
|
||
|
while(true){
|
||
|
// send
|
||
|
// byte SSH_MSG_USERAUTH_REQUEST(50)
|
||
|
// string user name (ISO-10646 UTF-8, as defined in [RFC-2279])
|
||
|
// string service name (US-ASCII) "ssh-userauth" ? "ssh-connection"
|
||
|
// string "keyboard-interactive" (US-ASCII)
|
||
|
// string language tag (as defined in [RFC-3066])
|
||
|
// string submethods (ISO-10646 UTF-8)
|
||
|
packet.reset();
|
||
|
buf.putByte((byte)Session.SSH_MSG_USERAUTH_REQUEST);
|
||
|
buf.putString(_username);
|
||
|
buf.putString(Util.getBytes("ssh-connection"));
|
||
|
//buf.putString("ssh-userauth".getBytes());
|
||
|
buf.putString(Util.getBytes("keyboard-interactive"));
|
||
|
buf.putString(Util.getBytes(""));
|
||
|
buf.putString(Util.getBytes(""));
|
||
|
session.write(packet);
|
||
|
|
||
|
bool firsttime=true;
|
||
|
loop:
|
||
|
while(true){
|
||
|
// receive
|
||
|
// byte SSH_MSG_USERAUTH_SUCCESS(52)
|
||
|
// string service name
|
||
|
try{ buf=session.read(buf); }
|
||
|
catch(JSchException e){
|
||
|
e.GetType();
|
||
|
return false;
|
||
|
}
|
||
|
catch(System.IO.IOException e){
|
||
|
e.GetType();
|
||
|
return false;
|
||
|
}
|
||
|
//System.out.println("read: 52 ? "+ buf.buffer[5]);
|
||
|
if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_SUCCESS){
|
||
|
return true;
|
||
|
}
|
||
|
if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_BANNER){
|
||
|
buf.getInt(); buf.getByte(); buf.getByte();
|
||
|
byte[] _message=buf.getString();
|
||
|
byte[] lang=buf.getString();
|
||
|
String message=null;
|
||
|
try{ message=Util.getStringUTF8(_message); }
|
||
|
catch{
|
||
|
message=Util.getString(_message);
|
||
|
}
|
||
|
if(userinfo!=null){
|
||
|
userinfo.showMessage(message);
|
||
|
}
|
||
|
goto loop;
|
||
|
}
|
||
|
if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_FAILURE){
|
||
|
buf.getInt(); buf.getByte(); buf.getByte();
|
||
|
byte[] foo=buf.getString();
|
||
|
int partial_success=buf.getByte();
|
||
|
// System.out.println(new String(foo)+
|
||
|
// " partial_success:"+(partial_success!=0));
|
||
|
|
||
|
if(partial_success!=0){
|
||
|
throw new JSchPartialAuthException(Util.getString(foo));
|
||
|
}
|
||
|
|
||
|
if(firsttime){
|
||
|
throw new JSchException("USERAUTH KI is not supported");
|
||
|
//return false;
|
||
|
//cancel=true; // ??
|
||
|
}
|
||
|
break;
|
||
|
}
|
||
|
if(buf.buffer[5]==Session.SSH_MSG_USERAUTH_INFO_REQUEST){
|
||
|
firsttime=false;
|
||
|
buf.getInt(); buf.getByte(); buf.getByte();
|
||
|
String name=Util.getString(buf.getString());
|
||
|
String instruction=Util.getString(buf.getString());
|
||
|
String languate_tag=Util.getString(buf.getString());
|
||
|
int num=buf.getInt();
|
||
|
//System.out.println("name: "+name);
|
||
|
//System.out.println("instruction: "+instruction);
|
||
|
//System.out.println("lang: "+languate_tag);
|
||
|
//System.out.println("num: "+num);
|
||
|
String[] prompt=new String[num];
|
||
|
bool[] echo=new bool[num];
|
||
|
for(int i=0; i<num; i++){
|
||
|
prompt[i]=Util.getString(buf.getString());
|
||
|
echo[i]=(buf.getByte()!=0);
|
||
|
//System.out.println(" "+prompt[i]+","+echo[i]);
|
||
|
}
|
||
|
|
||
|
String[] response=null;
|
||
|
if(num>0
|
||
|
||(name.Length>0 || instruction.Length>0)
|
||
|
){
|
||
|
UIKeyboardInteractive kbi=(UIKeyboardInteractive)userinfo;
|
||
|
if(userinfo!=null){
|
||
|
response=kbi.promptKeyboardInteractive(dest,
|
||
|
name,
|
||
|
instruction,
|
||
|
prompt,
|
||
|
echo);
|
||
|
}
|
||
|
}
|
||
|
// byte SSH_MSG_USERAUTH_INFO_RESPONSE(61)
|
||
|
// int num-responses
|
||
|
// string response[1] (ISO-10646 UTF-8)
|
||
|
// ...
|
||
|
// string response[num-responses] (ISO-10646 UTF-8)
|
||
|
//if(response!=null)
|
||
|
//System.out.println("response.length="+response.length);
|
||
|
//else
|
||
|
//System.out.println("response is null");
|
||
|
packet.reset();
|
||
|
buf.putByte((byte)Session.SSH_MSG_USERAUTH_INFO_RESPONSE);
|
||
|
if(num>0 &&
|
||
|
(response==null || // cancel
|
||
|
num!=response.Length)){
|
||
|
buf.putInt(0);
|
||
|
if(response==null)
|
||
|
cancel=true;
|
||
|
}
|
||
|
else{
|
||
|
buf.putInt(num);
|
||
|
for(int i=0; i<num; i++){
|
||
|
//System.out.println("response: |"+response[i]+"| <- replace here with **** if you need");
|
||
|
buf.putString(Util.getBytes(response[i]));
|
||
|
}
|
||
|
}
|
||
|
session.write(packet);
|
||
|
if(cancel)
|
||
|
break;
|
||
|
//System.out.println("continue loop");
|
||
|
goto loop;
|
||
|
}
|
||
|
//throw new JSchException("USERAUTH fail ("+buf.buffer[5]+")");
|
||
|
return false;
|
||
|
}
|
||
|
if(cancel){
|
||
|
throw new JSchAuthCancelException("keyboard-interactive");
|
||
|
//break;
|
||
|
}
|
||
|
}
|
||
|
//return false;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
}
|