Fix port usage and always try to add the generated key

[dumload.git] / src / com / jcraft / jsch / UserAuthPassword.java

/* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
/*
Copyright (c) 2002-2010 ymnk, JCraft,Inc. All rights reserved.

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     the documentation and/or other materials provided with the distribution.

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     derived from this software without specific prior written permission.

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*/

package com.jcraft.jsch;

class UserAuthPassword extends UserAuth{
  private final int SSH_MSG_USERAUTH_PASSWD_CHANGEREQ=60;

  public boolean start(Session session) throws Exception{
    super.start(session);

    byte[] password=session.password;
    String dest=username+"@"+session.host;
    if(session.port!=22){
      dest+=(":"+session.port);
    }

    try{

    while(true){
      if(password==null){
	if(userinfo==null){
	  //throw new JSchException("USERAUTH fail");
	  return false;
	}
	if(!userinfo.promptPassword("Password for "+dest)){
	  throw new JSchAuthCancelException("password");
	  //break;
	}

	String _password=userinfo.getPassword();
	if(_password==null){
	  throw new JSchAuthCancelException("password");
	  //break;
	}
        password=Util.str2byte(_password);
      }

      byte[] _username=null;
      _username=Util.str2byte(username);

      // send
      // byte      SSH_MSG_USERAUTH_REQUEST(50)
      // string    user name
      // string    service name ("ssh-connection")
      // string    "password"
      // boolen    FALSE
      // string    plaintext password (ISO-10646 UTF-8)
      packet.reset();
      buf.putByte((byte)SSH_MSG_USERAUTH_REQUEST);
      buf.putString(_username);
      buf.putString(Util.str2byte("ssh-connection"));
      buf.putString(Util.str2byte("password"));
      buf.putByte((byte)0);
      buf.putString(password);
      session.write(packet);

      loop:
      while(true){
	buf=session.read(buf);
        int command=buf.getCommand()&0xff;

	if(command==SSH_MSG_USERAUTH_SUCCESS){
	  return true;
	}
	if(command==SSH_MSG_USERAUTH_BANNER){
	  buf.getInt(); buf.getByte(); buf.getByte();
	  byte[] _message=buf.getString();
	  byte[] lang=buf.getString();
          String message=Util.byte2str(_message);
	  if(userinfo!=null){
	    userinfo.showMessage(message);
	  }
	  continue loop;
	}
	if(command==SSH_MSG_USERAUTH_PASSWD_CHANGEREQ){
	  buf.getInt(); buf.getByte(); buf.getByte(); 
	  byte[] instruction=buf.getString();
	  byte[] tag=buf.getString();
	  if(userinfo==null || 
             !(userinfo instanceof UIKeyboardInteractive)){
            if(userinfo!=null){
              userinfo.showMessage("Password must be changed.");
            }
            return false;
          }

          UIKeyboardInteractive kbi=(UIKeyboardInteractive)userinfo;
          String[] response;
          String name="Password Change Required";
          String[] prompt={"New Password: "};
          boolean[] echo={false};
          response=kbi.promptKeyboardInteractive(dest,
                                                 name,
                                                 Util.byte2str(instruction),
                                                 prompt,
                                                 echo);
          if(response==null){
            throw new JSchAuthCancelException("password");
          }

          byte[] newpassword=Util.str2byte(response[0]);

          // send
          // byte      SSH_MSG_USERAUTH_REQUEST(50)
          // string    user name
          // string    service name ("ssh-connection")
          // string    "password"
          // boolen    TRUE
          // string    plaintext old password (ISO-10646 UTF-8)
          // string    plaintext new password (ISO-10646 UTF-8)
          packet.reset();
          buf.putByte((byte)SSH_MSG_USERAUTH_REQUEST);
          buf.putString(_username);
          buf.putString(Util.str2byte("ssh-connection"));
          buf.putString(Util.str2byte("password"));
          buf.putByte((byte)1);
          buf.putString(password);
          buf.putString(newpassword);
          Util.bzero(newpassword);
          response=null;
          session.write(packet);
	  continue loop;
        }
	if(command==SSH_MSG_USERAUTH_FAILURE){
	  buf.getInt(); buf.getByte(); buf.getByte(); 
	  byte[] foo=buf.getString();
	  int partial_success=buf.getByte();
	  //System.err.println(new String(foo)+
	  //		 " partial_success:"+(partial_success!=0));
	  if(partial_success!=0){
	    throw new JSchPartialAuthException(Util.byte2str(foo));
	  }
	  break;
	}
	else{
          //System.err.println("USERAUTH fail ("+buf.getCommand()+")");
//	  throw new JSchException("USERAUTH fail ("+buf.getCommand()+")");
	  return false;
	}
      }

      if(password!=null){
        Util.bzero(password);
        password=null;
      }

    }

    }
    finally{
      if(password!=null){
        Util.bzero(password);
        password=null;
      }
    }

    //throw new JSchException("USERAUTH fail");
    //return false;
  }
}