NetTelnetProtocol.cpp

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/***************************** License **********************************

 Copyright (C) 2008 by Communicative Machines
 http://www.cmlabs.com   All rights reserved.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

************************************************************************/
// NetTelnetProtocol.cpp: implementation of the NetTelnetProtocol class.
//
//////////////////////////////////////////////////////////////////////

#include "NetTelnetProtocol.h"

namespace cmlabs {

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////

NetTelnetProtocol::NetTelnetProtocol(JString greeting, JString prompt):NetProtocol("Telnet")
{
        welcomeText = greeting;
        promptText = prompt;
        netTimeout = 60000;
}

NetTelnetProtocol::~NetTelnetProtocol()
{

}

Object* NetTelnetProtocol::clone() const {
        return new NetTelnetProtocol(welcomeText, promptText);
}

bool NetTelnetProtocol::checkBufferForCompatibility(char* buffer, int length) {

        if (buffer == NULL)
                return false;

        if (length < 1) return false;

        if ((buffer[0] == 13) || (buffer[0] == 10))
                return true;

        return false;
}

bool NetTelnetProtocol::initializeConversation(JSocket* socket) {
        if (socket == NULL)
                return false;

        JString str = socket->readln(100);

        if (socket->writeln(welcomeText) < 0)
                return false;

        if (socket->writeln("") < 0)
                return false;

        if (socket->writeString(promptText) < 0)
                return false;

        return true;
}

bool NetTelnetProtocol::sendObject(JSocket* socket, Message* msg, bool isReply) {
        
        if (socket == NULL)
                return false;

        JString newPrompt = msg->get("NewPromptText");
        if (newPrompt.length() > 0) {
                promptText = newPrompt;
        }
        JString newWelcome = msg->get("NewWelcomeText");
        if (newWelcome.length() > 0) {
                welcomeText = newWelcome;
        }

        JString str = msg->getContent();
//      if (str.length() == 0)
//              return true;

        if (str.equals("###QUIT###")) {
                socket->writeln("\nGoodbye...\n\n");
                wait(10);
                socket->disconnectNow();
//              delete(msg);
                return true;
        }

        if (socket->writeln(str) < 0)
                return false;

        if (socket->writeString(promptText) < 0)
                return false;

//      delete(msg);
        return true;
}

Message* NetTelnetProtocol::receiveObject(JSocket* socket, int timeout) {
        Message* msg = NULL;

        if (socket == NULL)
                return NULL;

        JString str = socket->readln(timeout);

        if ( (str.equalsIgnoreCase("exit")) || (str.equalsIgnoreCase("quit"))) {
                socket->writeln("\nGoodbye...\n\n");
                wait(10);
                socket->disconnectNow();
                return NULL;
        }
        else if ((str.length() > 0) || (str.isCRTerminated)) {
                JString hostname = socket->getRemoteIPAddress();
                if (hostname.equals("localhost"))
                        hostname = socket->getLocalIPAddress();

                msg = new Message(hostname, "", "TelnetInput", str, "");
                msg->setOrigin(hostname);
                msg->set("netprotocol", name);
        }

        return msg;
}



} // namespace cmlabs

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