tnclass.cpp
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- ///////////////////////////////////////////////////////////////////////////////
- //Telnet Win32 : an ANSI telnet client.
- //Copyright (C) 1998 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: tnclass.cpp
- //
- // Contents: telnet object definition
- //
- // Product: telnet
- //
- // Revisions: August 30, 1998 Paul Brannan <pbranna@clemson.edu>
- // July 12, 1998 Paul Brannan
- // June 15, 1998 Paul Brannan
- // May 14, 1998 Paul Brannan
- // 5.April.1997 jbj@nounname.com
- // 14.Sept.1996 jbj@nounname.com
- // Version 2.0
- //
- ///////////////////////////////////////////////////////////////////////////////
- #include <stdlib.h>
- #include <string.h>
- #include "tnclass.h"
- #include "tnmisc.h"
- // Mingw32 needs these (Paul Brannan 9/4/98)
- #ifndef ICON_SMALL
- #define ICON_SMALL 0
- #endif
- #ifndef ICON_BIG
- #define ICON_BIG 1
- #endif
- // Ioannou Dec. 8, 1998
- #ifdef __BORLANDC__
- #ifndef WM_SETICON
- #define WM_SETICON STM_SETICON
- #endif
- #endif
- // DoInit() - performs initialization that is common to both the
- // constructors (Paul Brannan 6/15/98)
- void Telnet::DoInit() {
- Socket = INVALID_SOCKET;
- bConnected = 0;
- bNetPaused = 1;
- bNetFinished = 1;
- bNetFinish = 0;
- hThread = 0; // Sam Robertson 12/7/98
- hProcess = 0;
- WSADATA WsaData;
- // Set the title
- telSetConsoleTitle("No Connection");
- // Change the icon
- hConsoleWindow = GetConsoleWindowAA();
- iconChange = SetIcon(hConsoleWindow, 0, &oldBIcon, &oldSIcon, ini.get_startdir());
- if (WSAStartup(MAKEWORD(1, 1), &WsaData)) {
- DWORD dwLastError = GetLastError();
- printm(0, FALSE, MSG_ERROR, "WSAStartup()");
- printm(0, TRUE, dwLastError);
- bWinsockUp = 0;
- return;
- }
- bWinsockUp = 1;
- // Get keyfile (Paul Brannan 5/12/98)
- const char *keyfile = ini.get_keyfile();
- // This should be changed later to use the Tnerror routines
- // This has been done (Paul Brannan 6/5/98)
- if(LoadKeyMap( keyfile, ini.get_default_config()) != 1)
- // printf("Error loading keymap.n");
- printm(0, FALSE, MSG_ERRKEYMAP);
- }
- Telnet::Telnet():
- MapLoader(KeyTrans, Charmap),
- Console(GetStdHandle(STD_OUTPUT_HANDLE)),
- TelHandler(Network, Console, Parser),
- ThreadParams(TelHandler),
- Clipboard(GetConsoleWindowAA(), Network),
- Mouse(Clipboard),
- Scroller(Mouse, ini.get_scroll_size()),
- Parser(Console, KeyTrans, Scroller, Network, Charmap) {
- DoInit();
- }
- Telnet::Telnet(const char * szHost1, const char *strPort1):
- MapLoader(KeyTrans, Charmap),
- Console(GetStdHandle(STD_OUTPUT_HANDLE)),
- TelHandler(Network, Console, Parser),
- ThreadParams(TelHandler),
- Clipboard(GetConsoleWindowAA(), Network),
- Mouse(Clipboard),
- Scroller(Mouse, ini.get_scroll_size()),
- Parser(Console, KeyTrans, Scroller, Network, Charmap) {
- DoInit();
- Open( szHost1, strPort1);
- }
- Telnet::~Telnet(){
- if (bWinsockUp){
- if(bConnected) Close();
- WSACleanup();
- }
- // Paul Brannan 8/10/98
- if(iconChange) {
- ResetIcon(hConsoleWindow, oldBIcon, oldSIcon);
- }
- }
- // changed from char * to const char * (Paul Brannan 5/12/98)
- int Telnet::LoadKeyMap(const char * file, const char * name){
- // printf("Loading %s from %s.n", name ,file);
- printm(0, FALSE, MSG_KEYMAP, name, file);
- return MapLoader.Load(file,name);
- }
- void Telnet::DisplayKeyMap(){ // display available keymaps
- MapLoader.Display();
- };
- int Telnet::SwitchKeyMap(int to) { // switch to selected keymap
- int ret = KeyTrans.SwitchTo(to);
- switch(ret) {
- case -1: printm(0, FALSE, MSG_KEYNOKEYMAPS); break;
- case 0: printm(0, FALSE, MSG_KEYBADMAP); break;
- case 1: printm(0, FALSE, MSG_KEYMAPSWITCHED); break;
- }
- return ret;
- };
- int Telnet::Open(const char *szHost1, const char *strPort1){
- if (bWinsockUp && !bConnected){
- telSetConsoleTitle(szHost1);
- strncpy (szHost,szHost1, 127);
- strncpy(strPort, strPort1, sizeof(strPort));
- // Determine whether to pipe to an executable or use our own sockets
- // (Paul Brannan March 18, 1999)
- const char *netpipe;
- if(*(netpipe=ini.get_netpipe())) {
- PROCESS_INFORMATION pi;
- HANDLE hInWrite, hOutRead, hErrRead;
- if(!CreateHiddenConsoleProcess(netpipe, &pi, &hInWrite,
- &hOutRead, &hErrRead)) {
- printm(0, FALSE, MSG_ERRPIPE);
- return TNNOCON;
- }
- Network.SetPipe(hOutRead, hInWrite);
- hProcess = pi.hProcess;
- } else {
- Socket = Connect();
- if (Socket == INVALID_SOCKET) {
- printm(0, FALSE, GetLastError());
- return TNNOCON;
- }
- Network.SetSocket(Socket);
- SetLocalAddress(Socket);
- }
- bNetFinish = 0;
- bConnected = 1;
- ThreadParams.p.bNetPaused = &bNetPaused;
- ThreadParams.p.bNetFinish = &bNetFinish;
- ThreadParams.p.bNetFinished = &bNetFinished;
- ThreadParams.p.hExit = CreateEvent(0, TRUE, FALSE, "");
- ThreadParams.p.hPause = CreateEvent(0, FALSE, FALSE, "");
- ThreadParams.p.hUnPause = CreateEvent(0, FALSE, FALSE, "");
- DWORD idThread;
- // Disable Ctrl-break (PB 5/14/98);
- // Fixed (Thomas Briggs 8/17/98)
- if(ini.get_disable_break() || ini.get_control_break_as_c())
- SetConsoleCtrlHandler(ControlEventHandler, TRUE);
- hThread = CreateThread(0, 0,
- (LPTHREAD_START_ROUTINE) telProcessNetwork,
- (LPVOID)&ThreadParams, 0, &idThread);
- // This helps the display thread a little (Paul Brannan 8/3/98)
- SetThreadPriority(hThread, THREAD_PRIORITY_ABOVE_NORMAL);
- return Resume();
- } else if(bWinsockUp && bConnected) {
- printm (0, FALSE, MSG_ALREADYCONNECTED, szHost);
- }
-
- return TNNOCON; // cannot do winsock stuff or already connected
- }
- // There seems to be a bug with MSVC's optimization. This turns them off
- // for these two functions.
- // (Paul Brannan 5/14/98)
- #ifdef _MSC_VER
- #pragma optimize("", off)
- #endif
- int Telnet::Close() {
- Console.sync();
- switch(Network.get_net_type()) {
- case TN_NETSOCKET:
- if(Socket != INVALID_SOCKET) closesocket(Socket);
- Socket = INVALID_SOCKET;
- break;
- case TN_NETPIPE:
- if(hProcess != 0) {
- TerminateProcess(hProcess, 0);
- CloseHandle(hProcess);
- hProcess = 0;
- }
- break;
- }
- // Enable Ctrl-break (PB 5/14/98);
- // Ioannou : this must be FALSE
- if(ini.get_disable_break()) SetConsoleCtrlHandler(NULL, FALSE);
- if (hThread) CloseHandle(hThread); // Paul Brannan 8/11/98
- hThread = NULL; // Daniel Straub 11/12/98
- SetEvent(ThreadParams.p.hUnPause);
- bNetFinish = 1;
- while (!bNetFinished)
- Sleep (0); // give up our time slice- this lets our connection thread
- // finish itself, so we don't hang -crn@ozemail.com.au
- telSetConsoleTitle("No Connection");
- bConnected = 0;
- return 1;
- }
- int Telnet::Resume(){
- int i;
- if (bConnected) {
- Console.sync();
- for(;;){
- SetEvent(ThreadParams.p.hUnPause);
- i = telProcessConsole(&ThreadParams.p, KeyTrans, Console,
- Network, Mouse, Clipboard, hThread);
- if (i) bConnected = 1;
- else bConnected = 0;
- ResetEvent(ThreadParams.p.hUnPause);
- SetEvent(ThreadParams.p.hPause);
- while (!bNetPaused)
- Sleep (0); // give up our time slice- this lets our connection thread
- // unpause itself, so we don't hang -crn@ozemail.com.au
- switch (i){
- case TNNOCON:
- Close();
- return TNDONE;
- case TNPROMPT:
- return TNPROMPT;
- case TNSCROLLBACK:
- Scroller.ScrollBack();
- break;
- case TNSPAWN:
- NewProcess();
- }
- }
- }
- return TNNOCON;
- }
- // Turn optimization back on (Paul Brannan 5/12/98)
- #ifdef _MSC_VER
- #pragma optimize("", on)
- #endif
- // The scrollback functions have been moved to TScroll.cpp
- // (Paul Brannan 6/15/98)
- SOCKET Telnet::Connect()
- {
- SOCKET Socket1 = socket(AF_INET, SOCK_STREAM, 0);
- SOCKADDR_IN SockAddr;
- SockAddr.sin_family = AF_INET;
- SockAddr.sin_addr.s_addr = inet_addr(szHost);
- // determine the port correctly -crn@ozemail.com.au 15/12/98
- SERVENT *sp;
- sp = getservbyname (strPort, "tcp");
- if (sp == NULL) {
- if (isdigit (*(strPort)))
- SockAddr.sin_port = htons(atoi(strPort));
- else {
- printm(0, FALSE, MSG_NOSERVICE, strPort);
- return INVALID_SOCKET;
- }
- } else
- SockAddr.sin_port = sp->s_port;
- ///
- // Were we given host name?
- if (SockAddr.sin_addr.s_addr == INADDR_NONE) {
- // Resolve host name to IP address.
- printm(0, FALSE, MSG_RESOLVING, szHost);
- hostent* pHostEnt = gethostbyname(szHost);
- if (!pHostEnt)
- return INVALID_SOCKET;
- printit("n");
- SockAddr.sin_addr.s_addr = *(DWORD*)pHostEnt->h_addr;
- }
- // Print a message telling the user the IP we are connecting to
- // (Paul Brannan 5/14/98)
- char ss_b1[4], ss_b2[4], ss_b3[4], ss_b4[4], ss_b5[12];
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b1, ss_b1, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b2, ss_b2, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b3, ss_b3, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b4, ss_b4, 10);
- itoa(ntohs(SockAddr.sin_port), ss_b5, 10);
- printm(0, FALSE, MSG_TRYING, ss_b1, ss_b2, ss_b3, ss_b4, ss_b5);
-
- if (connect(Socket1, (sockaddr*)&SockAddr, sizeof(SockAddr)))
- return INVALID_SOCKET;
- char esc[2];
- esc [0] = ini.get_escape_key();
- esc [1] = 0;
- printm(0, FALSE, MSG_CONNECTED, szHost, esc);
- return Socket1;
- }
- void Telnet::telSetConsoleTitle(const char * szHost1)
- {
- char szTitle[128] = "Telnet - ";
- strcat(szTitle, szHost1);
- if(ini.get_set_title()) SetConsoleTitle(szTitle);
- }
- void Telnet::NewProcess() {
- char cmd_line[MAX_PATH*2];
- PROCESS_INFORMATION pi;
- strcpy(cmd_line, ini.get_startdir());
- strcat(cmd_line, ini.get_exename()); // Thomas Briggs 12/7/98
-
- if(!SpawnProcess(cmd_line, &pi)) printm(0, FALSE, MSG_NOSPAWN);
- }
- void Telnet::SetLocalAddress(SOCKET s) {
- SOCKADDR_IN SockAddr;
- int size = sizeof(SOCKADDR_IN);
- memset(&SockAddr, 0, sizeof(SockAddr));
- SockAddr.sin_family = AF_INET;
- getsockname(Network.GetSocket(), (sockaddr*)&SockAddr, &size);
- char ss_b1[4], ss_b2[4], ss_b3[4], ss_b4[4];
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b1, ss_b1, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b2, ss_b2, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b3, ss_b3, 10);
- itoa(SockAddr.sin_addr.S_un.S_un_b.s_b4, ss_b4, 10);
- char addr[40];
- strcpy(addr, ss_b1);
- strcat(addr, ".");
- strcat(addr, ss_b2);
- strcat(addr, ".");
- strcat(addr, ss_b3);
- strcat(addr, ".");
- strcat(addr, ss_b4);
- strcat(addr, ":0.0");
- Network.SetLocalAddress(addr);
- }