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/*
Copyright (C) 1997-2001 Id Software, Inc.
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// conproc.c -- support for qhost
#include <stdio.h>
#include <process.h>
#include <windows.h>
#include "conproc.h"
#define CCOM_WRITE_TEXT 0x2
// Param1 : Text
#define CCOM_GET_TEXT 0x3
// Param1 : Begin line
// Param2 : End line
#define CCOM_GET_SCR_LINES 0x4
// No params
#define CCOM_SET_SCR_LINES 0x5
// Param1 : Number of lines
HANDLE heventDone;
HANDLE hfileBuffer;
HANDLE heventChildSend;
HANDLE heventParentSend;
HANDLE hStdout;
HANDLE hStdin;
unsigned _stdcall RequestProc (void *arg);
LPVOID GetMappedBuffer (HANDLE hfileBuffer);
void ReleaseMappedBuffer (LPVOID pBuffer);
BOOL GetScreenBufferLines (int *piLines);
BOOL SetScreenBufferLines (int iLines);
BOOL ReadText (LPTSTR pszText, int iBeginLine, int iEndLine);
BOOL WriteText (LPCTSTR szText);
int CharToCode (char c);
BOOL SetConsoleCXCY(HANDLE hStdout, int cx, int cy);
int ccom_argc;
char **ccom_argv;
/*
================
CCheckParm
Returns the position (1 to argc-1) in the program's argument list
where the given parameter apears, or 0 if not present
================
*/
int CCheckParm (char *parm)
{
int i;
for (i=1 ; i<ccom_argc ; i++)
{
if (!ccom_argv[i])
continue;
if (!strcmp (parm,ccom_argv[i]))
return i;
}
return 0;
}
void InitConProc (int argc, char **argv)
{
unsigned threadAddr;
HANDLE hFile;
HANDLE heventParent;
HANDLE heventChild;
int t;
ccom_argc = argc;
ccom_argv = argv;
// give QHOST a chance to hook into the console
if ((t = CCheckParm ("-HFILE")) > 0)
{
if (t < argc)
hFile = (HANDLE)atoi (ccom_argv[t+1]);
}
if ((t = CCheckParm ("-HPARENT")) > 0)
{
if (t < argc)
heventParent = (HANDLE)atoi (ccom_argv[t+1]);
}
if ((t = CCheckParm ("-HCHILD")) > 0)
{
if (t < argc)
heventChild = (HANDLE)atoi (ccom_argv[t+1]);
}
// ignore if we don't have all the events.
if (!hFile || !heventParent || !heventChild)
{
printf ("Qhost not present.\n");
return;
}
printf ("Initializing for qhost.\n");
hfileBuffer = hFile;
heventParentSend = heventParent;
heventChildSend = heventChild;
// so we'll know when to go away.
heventDone = CreateEvent (NULL, FALSE, FALSE, NULL);
if (!heventDone)
{
printf ("Couldn't create heventDone\n");
return;
}
if (!_beginthreadex (NULL, 0, RequestProc, NULL, 0, &threadAddr))
{
CloseHandle (heventDone);
printf ("Couldn't create QHOST thread\n");
return;
}
// save off the input/output handles.
hStdout = GetStdHandle (STD_OUTPUT_HANDLE);
hStdin = GetStdHandle (STD_INPUT_HANDLE);
// force 80 character width, at least 25 character height
SetConsoleCXCY (hStdout, 80, 25);
}
void DeinitConProc (void)
{
if (heventDone)
SetEvent (heventDone);
}
unsigned _stdcall RequestProc (void *arg)
{
int *pBuffer;
DWORD dwRet;
HANDLE heventWait[2];
int iBeginLine, iEndLine;
heventWait[0] = heventParentSend;
heventWait[1] = heventDone;
while (1)
{
dwRet = WaitForMultipleObjects (2, heventWait, FALSE, INFINITE);
// heventDone fired, so we're exiting.
if (dwRet == WAIT_OBJECT_0 + 1)
break;
pBuffer = (int *) GetMappedBuffer (hfileBuffer);
// hfileBuffer is invalid. Just leave.
if (!pBuffer)
{
printf ("Invalid hfileBuffer\n");
break;
}
switch (pBuffer[0])
{
case CCOM_WRITE_TEXT:
// Param1 : Text
pBuffer[0] = WriteText ((LPCTSTR) (pBuffer + 1));
break;
case CCOM_GET_TEXT:
// Param1 : Begin line
// Param2 : End line
iBeginLine = pBuffer[1];
iEndLine = pBuffer[2];
pBuffer[0] = ReadText ((LPTSTR) (pBuffer + 1), iBeginLine,
iEndLine);
break;
case CCOM_GET_SCR_LINES:
// No params
pBuffer[0] = GetScreenBufferLines (&pBuffer[1]);
break;
case CCOM_SET_SCR_LINES:
// Param1 : Number of lines
pBuffer[0] = SetScreenBufferLines (pBuffer[1]);
break;
}
ReleaseMappedBuffer (pBuffer);
SetEvent (heventChildSend);
}
_endthreadex (0);
return 0;
}
LPVOID GetMappedBuffer (HANDLE hfileBuffer)
{
LPVOID pBuffer;
pBuffer = MapViewOfFile (hfileBuffer,
FILE_MAP_READ | FILE_MAP_WRITE, 0, 0, 0);
return pBuffer;
}
void ReleaseMappedBuffer (LPVOID pBuffer)
{
UnmapViewOfFile (pBuffer);
}
BOOL GetScreenBufferLines (int *piLines)
{
CONSOLE_SCREEN_BUFFER_INFO info;
BOOL bRet;
bRet = GetConsoleScreenBufferInfo (hStdout, &info);
if (bRet)
*piLines = info.dwSize.Y;
return bRet;
}
BOOL SetScreenBufferLines (int iLines)
{
return SetConsoleCXCY (hStdout, 80, iLines);
}
BOOL ReadText (LPTSTR pszText, int iBeginLine, int iEndLine)
{
COORD coord;
DWORD dwRead;
BOOL bRet;
coord.X = 0;
coord.Y = iBeginLine;
bRet = ReadConsoleOutputCharacter(
hStdout,
pszText,
80 * (iEndLine - iBeginLine + 1),
coord,
&dwRead);
// Make sure it's null terminated.
if (bRet)
pszText[dwRead] = '\0';
return bRet;
}
BOOL WriteText (LPCTSTR szText)
{
DWORD dwWritten;
INPUT_RECORD rec;
char upper, *sz;
sz = (LPTSTR) szText;
while (*sz)
{
// 13 is the code for a carriage return (\n) instead of 10.
if (*sz == 10)
*sz = 13;
upper = toupper(*sz);
rec.EventType = KEY_EVENT;
rec.Event.KeyEvent.bKeyDown = TRUE;
rec.Event.KeyEvent.wRepeatCount = 1;
rec.Event.KeyEvent.wVirtualKeyCode = upper;
rec.Event.KeyEvent.wVirtualScanCode = CharToCode (*sz);
rec.Event.KeyEvent.uChar.AsciiChar = *sz;
rec.Event.KeyEvent.uChar.UnicodeChar = *sz;
rec.Event.KeyEvent.dwControlKeyState = isupper(*sz) ? 0x80 : 0x0;
WriteConsoleInput(
hStdin,
&rec,
1,
&dwWritten);
rec.Event.KeyEvent.bKeyDown = FALSE;
WriteConsoleInput(
hStdin,
&rec,
1,
&dwWritten);
sz++;
}
return TRUE;
}
int CharToCode (char c)
{
char upper;
upper = toupper(c);
switch (c)
{
case 13:
return 28;
default:
break;
}
if (isalpha(c))
return (30 + upper - 65);
if (isdigit(c))
return (1 + upper - 47);
return c;
}
BOOL SetConsoleCXCY(HANDLE hStdout, int cx, int cy)
{
CONSOLE_SCREEN_BUFFER_INFO info;
COORD coordMax;
coordMax = GetLargestConsoleWindowSize(hStdout);
if (cy > coordMax.Y)
cy = coordMax.Y;
if (cx > coordMax.X)
cx = coordMax.X;
if (!GetConsoleScreenBufferInfo(hStdout, &info))
return FALSE;
// height
info.srWindow.Left = 0;
info.srWindow.Right = info.dwSize.X - 1;
info.srWindow.Top = 0;
info.srWindow.Bottom = cy - 1;
if (cy < info.dwSize.Y)
{
if (!SetConsoleWindowInfo(hStdout, TRUE, &info.srWindow))
return FALSE;
info.dwSize.Y = cy;
if (!SetConsoleScreenBufferSize(hStdout, info.dwSize))
return FALSE;
}
else if (cy > info.dwSize.Y)
{
info.dwSize.Y = cy;
if (!SetConsoleScreenBufferSize(hStdout, info.dwSize))
return FALSE;
if (!SetConsoleWindowInfo(hStdout, TRUE, &info.srWindow))
return FALSE;
}
if (!GetConsoleScreenBufferInfo(hStdout, &info))
return FALSE;
// width
info.srWindow.Left = 0;
info.srWindow.Right = cx - 1;
info.srWindow.Top = 0;
info.srWindow.Bottom = info.dwSize.Y - 1;
if (cx < info.dwSize.X)
{
if (!SetConsoleWindowInfo(hStdout, TRUE, &info.srWindow))
return FALSE;
info.dwSize.X = cx;
if (!SetConsoleScreenBufferSize(hStdout, info.dwSize))
return FALSE;
}
else if (cx > info.dwSize.X)
{
info.dwSize.X = cx;
if (!SetConsoleScreenBufferSize(hStdout, info.dwSize))
return FALSE;
if (!SetConsoleWindowInfo(hStdout, TRUE, &info.srWindow))
return FALSE;
}
return TRUE;
}
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