tnetwork.cpp

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//Telnet Win32 : an ANSI telnet client.
//Copyright (C) 1998-2000 Paul Brannan
//Copyright (C) 1998 I.Ioannou
//Copyright (C) 1997 Brad Johnson
//
//This program is free software; you can redistribute it and/or
//modify it under the terms of the GNU General Public License
//as published by the Free Software Foundation; either version 2
//of the License, or (at your option) any later version.
//
//This program 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 General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with this program; if not, write to the Free Software
//Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
//I.Ioannou
//roryt@hol.gr
//
 
//
// Module:      tnetwork.cpp
//
// Contents:    telnet network module
//
// Product:     telnet
//
// Revisions:   March 18, 1999      Paul Brannan (pbranna@clemson.edu)
//
 
#include "precomp.h"
 
void TNetwork::SetSocket(SOCKET s) {
    socket = s;
    net_type = TN_NETSOCKET;
    local_echo = line_mode = 1;
}
 
void TNetwork::SetPipe(HANDLE pIn, HANDLE pOut) {
    pipeIn = pIn;
    pipeOut = pOut;
    net_type = TN_NETPIPE;
    local_echo = line_mode = 0;
}
 
int TNetwork::WriteString(const char *str, const int length) {
    switch(net_type) {
    case TN_NETSOCKET:
        return send(socket, str, length, 0);
    case TN_NETPIPE:
        {
            DWORD dwWritten;
            if(!WriteFile(pipeOut, str, length, &dwWritten, (LPOVERLAPPED)NULL)) return -1;
            return dwWritten;
        }
    }
    return 0;
}
 
int TNetwork::ReadString (char *str, const int length) {
    switch(net_type) {
    case TN_NETSOCKET:
        return recv(socket, str, length, 0);
    case TN_NETPIPE:
        {
            DWORD dwRead;
            if(!ReadFile(pipeIn, str, length, &dwRead, (LPOVERLAPPED)NULL)) return -1;
            return dwRead;
        }
    }
    return 0;
}
 
void TNetwork::do_naws(int width, int height) {
    if(!naws_func) return;
    char buf[100];
    int len = (*naws_func)(buf, width, height);
    WriteString(buf, len);
}
 
void TNetwork::SetLocalAddress(char *buf) {
    local_address = new char[strlen(buf) + 1];
    strcpy(local_address, buf);
}