windows-server-2003/base/mvdm/dos/command/cmdconf.c

/*  cmdconf.c - handles pre-processing of config.sys\autoexec.bat
 *
 *  Modification History:
 *
 *  21-Nov-1992 Jonle , Created
 */

#include "cmd.h"
#include <cmdsvc.h>
#include <demexp.h>
#include <softpc.h>
#include <mvdm.h>
#include <ctype.h>
#include <oemuni.h>

//
// local stuff
//
CHAR *pchTmpConfigFile;
CHAR *pchTmpAutoexecFile;
CHAR achSYSROOT[] = "%SystemRoot%";
CHAR achCOMMAND[] = "\\System32\\command.com";
CHAR achSHELL[]   = "shell";
CHAR achCOUNTRY[] = "country";
CHAR achREM[]     = "rem";
CHAR achENV[]     = "/e:";
CHAR achEOL[]     = "\r\n";
CHAR achSET[]     = "SET";
CHAR achPROMPT[]  = "PROMPT";
CHAR achPATH[]    = "PATH";
#ifdef JAPAN
// device=...\$disp.sys /hs=%HardwareScroll%
CHAR  achHARDWARESCROLL[] = "%HardwareScroll%";
DWORD dwLenHardwareScroll;
CHAR  achHardwareScroll[64];
#endif // JAPAN
#if defined(KOREA)
// device=...\hbios.sys /k:#
CHAR  achHBIOS[] = "hbios.sys";
CHAR  achFontSys[] = "font_win.sys";
CHAR  achDispSys[] = "disp_win.sys";
DWORD dwLenHotkeyOption;
CHAR  achHotkeyOption[80];
BOOLEAN fKoreanCP;

#define KOREAN_WANSUNG_CP 949
#endif // KOREA

DWORD dwLenSysRoot;
CHAR  achSysRoot[64];



void  ExpandConfigFiles(BOOLEAN bConfig);
DWORD WriteExpanded(HANDLE hFile,  CHAR *pch, DWORD dwBytes);
void  WriteFileAssert(HANDLE hFile, CHAR *pBuff, DWORD dwBytes);
#define ISEOL(ch) ( !(ch) || ((ch) == '\n') || ((ch) == '\r'))
#ifdef JAPAN
DWORD GetHardwareScroll( PCHAR achHardwareScroll, int size );
#endif // JAPAN
#if defined(KOREA)
DWORD GetHotkeyOption( PCHAR achHotkeyOption, UINT size );
#endif // KOREA


/** There are still many items we don't supprot for long path name
     (1). device, install in config.sys
     (2). Third-party shell
     (3). lh, loadhigh and any other commands in autoexec.bat

**/

/* cmdGetConfigSys - Creates a temp file to replace c:\config.sys
 *
 *  Entry - Client (DS:DX)  pointer to receive file name
 *
 *  EXIT  - This routine will Terminate the vdm if it fails
 *          And will not return
 *
 *  The buffer to receive the file name must be at least 64 bytes
 */
VOID cmdGetConfigSys (VOID)
{
     UNICODE_STRING Unicode;
     OEM_STRING     OemString;
     ANSI_STRING    AnsiString;

     ExpandConfigFiles(TRUE);

     RtlInitAnsiString(&AnsiString, pchTmpConfigFile);
     if (!NT_SUCCESS(RtlAnsiStringToUnicodeString(&Unicode, &AnsiString, TRUE)) )
         goto ErrExit;

     OemString.Buffer = (char *)GetVDMAddr(getDS(),getDX());
     OemString.MaximumLength = 64;
     if ( !NT_SUCCESS(RtlUnicodeStringToOemString(&OemString,&Unicode,FALSE)) )
         goto ErrExit;

     RtlFreeUnicodeString(&Unicode);
     return;

ErrExit:
     RcErrorDialogBox(ED_INITMEMERR, pchTmpConfigFile, NULL);
     TerminateVDM();
}



/* cmdGetAutoexecBat - Creates a temp file to replace c:\autoexec.bat
 *
 *  Entry - Client  (DS:DX)  pointer to receive file name
 *
 *  EXIT  - This routine will Terminate the vdm if it fails
 *          And will not return
 *
 *
 *  The buffer to receive the file name must be at least 64 bytes
 */
VOID cmdGetAutoexecBat (VOID)
{
     UNICODE_STRING Unicode;
     OEM_STRING     OemString;
     ANSI_STRING    AnsiString;

     ExpandConfigFiles(FALSE);

#if defined(JAPAN) || defined(KOREA)
    // fixed: change code page problem
    {
        extern int BOPFromDispFlag;

        if ( !VDMForWOW && !BOPFromDispFlag ) { // mskkbug#2756 10/15/93 yasuho
            SetConsoleCP( 437 );
            SetConsoleOutputCP( 437 );
        }
    }
#endif // JAPAN || KOREA
     RtlInitAnsiString(&AnsiString, pchTmpAutoexecFile);
     if (!NT_SUCCESS(RtlAnsiStringToUnicodeString(&Unicode,&AnsiString,TRUE)) )
         goto ErrExit;

     OemString.Buffer = (char *)GetVDMAddr(getDS(),getDX());
     OemString.MaximumLength = 64;
     if (!NT_SUCCESS(RtlUnicodeStringToOemString(&OemString,&Unicode,FALSE)) )
         goto ErrExit;

     RtlFreeUnicodeString(&Unicode);

     return;

ErrExit:
     RcErrorDialogBox(ED_INITMEMERR, pchTmpConfigFile, NULL);
     TerminateVDM();  // skip cleanup since I insist that we exit!
}



/*
 *  DeleteConfigFiles - Deletes the temporray config files created
 *                      by cmdGetAutoexecBat and cmdGetConfigSys
 */
VOID DeleteConfigFiles(VOID)
{
    if (pchTmpConfigFile)  {
#if DBG
      if (!(fShowSVCMsg & KEEPBOOTFILES))
#endif
        DeleteFile(pchTmpConfigFile);

        free(pchTmpConfigFile);
        pchTmpConfigFile = NULL;
        }

    if (pchTmpAutoexecFile) {
#if DBG
      if (!(fShowSVCMsg & KEEPBOOTFILES))
#endif
        DeleteFile(pchTmpAutoexecFile);

        free(pchTmpAutoexecFile);
        pchTmpAutoexecFile = NULL;
        }

    return;
}



// if it is a config command
//    returns pointer to character immediatly following the equal sign
// else
//    returns NULL

PCHAR IsConfigCommand(PCHAR pConfigCommand, int CmdLen, PCHAR pLine)
{
      PCHAR pch;

      if (!_strnicmp(pLine, pConfigCommand, CmdLen)) {
           pch = pLine + CmdLen;
           while (!isgraph(*pch) && !ISEOL(*pch))      // skip to "="
                  pch++;

           if (*pch++ == '=') {
               return pch;
               }
           }

       return NULL;
}

#if defined(KOREA)
// if it is a HBIOS related config command
//    returns TRUE
// else
//    returns FALSE

BOOLEAN IsHBIOSConfig(PCHAR pCommand, int CmdLen, PCHAR pLine)
{
  CHAR  *pch = pLine;
  CHAR  achDevice[] = "Device";
  CHAR  achRem[] = "REM";

  while (*pch && !ISEOL(*pch)) {
        if (!_strnicmp(pch, achRem, sizeof(achRem)-sizeof(CHAR)))
            return (FALSE);

        if (!_strnicmp(pch, achDevice, sizeof(achDevice)-sizeof(CHAR))) {
            while (*pch && !ISEOL(*pch)) {
                  if (!_strnicmp(pch, pCommand, CmdLen))
                     return (TRUE);
                  pch++;
            }
            return FALSE;
        }
        pch++;
  }
  return (FALSE);

}
#endif





/*
 *  Preprocesses the specfied config file (config.sys\autoexec.bat)
 *  into a temporary file.
 *
 *  - expands %SystemRoot%
#ifdef JAPAN
 *  - expands %HardwareScroll%
#endif // JAPAN
#if defined(KOREA)
 *  - expands HotkeyOption
#endif // KOREA
*  - adds SHELL line for config.sys
 *
 *  entry: BOOLEAN bConfig : TRUE  - config.sys
 *                           FALSE - autoexec.bat
 */
void ExpandConfigFiles(BOOLEAN bConfig)
{
   DWORD  dw, dwRawFileSize;

   HANDLE hRawFile;
   HANDLE hTmpFile;
   CHAR **ppTmpFile;
   CHAR *pRawBuffer;
   CHAR *pLine;
   CHAR *pTmp;
   CHAR *pEnvParam= NULL;
   CHAR *pPartyShell=NULL;
   CHAR achRawFile[MAX_PATH+12];
   CHAR *lpszzEnv, *lpszName;
   int  cchEnv;

#ifdef JAPAN
   dwLenHardwareScroll = GetHardwareScroll( achHardwareScroll, sizeof(achHardwareScroll) );
#endif // JAPAN
#if defined(KOREA)
   // HBIOS.SYS is only support WanSung Codepage.
   fKoreanCP = (GetConsoleCP() ==  KOREAN_WANSUNG_CP) ? TRUE : FALSE;
   dwLenHotkeyOption = GetHotkeyOption( achHotkeyOption, sizeof(achHotkeyOption) );
#endif // KOREA
   dw = GetSystemWindowsDirectory(achRawFile, sizeof(achRawFile));
   dwLenSysRoot = GetShortPathNameA(achRawFile, achSysRoot, sizeof(achSysRoot));
   if (dwLenSysRoot >= sizeof(achSysRoot)) {
        dwLenSysRoot = 0;
        achSysRoot[0] = '\0';
        }

   GetPIFConfigFiles(bConfig, achRawFile, FALSE);

   ppTmpFile = bConfig ? &pchTmpConfigFile : &pchTmpAutoexecFile;


   hRawFile = CreateFile(achRawFile,
                         GENERIC_READ,
                         FILE_SHARE_READ,
                         NULL,
                         OPEN_EXISTING,
                         FILE_ATTRIBUTE_NORMAL,
                         NULL );

   if (hRawFile == (HANDLE)0xFFFFFFFF
       || !dwLenSysRoot
       || dwLenSysRoot >= sizeof(achSysRoot)
       || !(dwRawFileSize = GetFileSize(hRawFile, NULL))
       || dwRawFileSize == 0xFFFFFFFF   )
      {
       RcErrorDialogBox(ED_BADSYSFILE, achRawFile, NULL);
       TerminateVDM();  // skip cleanup since I insist that we exit!
       }

   pRawBuffer = malloc(dwRawFileSize+1);
   // allocate buffer to save environment settings in autoexec.nt
   // I know this is bad to allocate this amount of memory at this
   // moment as we dont know if there are anything we want to keep
   // at all. This allocation simply provides the following error
   // handling easily.
   if(!bConfig) {
        lpszzEnv = lpszzcmdEnv16 = (PCHAR)malloc(dwRawFileSize);
        cchEnv = 0;
   }
   if (!pRawBuffer || (!bConfig && lpszzcmdEnv16 == NULL)) {
       RcErrorDialogBox(ED_INITMEMERR, achRawFile, NULL);
       TerminateVDM();  // skip cleanup since I insist that we exit!
       }

   if (!cmdCreateTempFile(&hTmpFile,ppTmpFile)
       || !ReadFile(hRawFile, pRawBuffer, dwRawFileSize, &dw, NULL)
       || dw != dwRawFileSize )
      {
       GetTempPath(MAX_PATH, achRawFile);
       achRawFile[63] = '\0';
       RcErrorDialogBox(ED_INITTMPFILE, achRawFile, NULL);
       TerminateVDM();  // skip cleanup since I insist that we exit!
       }
    // CHANGE HERE WHEN YOU CHANGE cmdCreateTempFile !!!!!!!!!!
    // we depend on the buffer size allocated for the file name
    dw = GetShortPathNameA(*ppTmpFile, *ppTmpFile, MAX_PATH +13);
    if (dw == 0 || dw > 63)
      {
       GetTempPath(MAX_PATH, achRawFile);
       achRawFile[63] = '\0';
       RcErrorDialogBox(ED_INITTMPFILE, achRawFile, NULL);
       TerminateVDM();  // skip cleanup since I insist that we exit!
       }


      // null terminate the buffer so we can use CRT string functions
    *(pRawBuffer+dwRawFileSize) = '\0';

      // ensure no trailing backslash in System Directory
    if (*(achSysRoot+dwLenSysRoot-1) == '\\') {
        *(achSysRoot + --dwLenSysRoot) = '\0';
        }

    pLine = pRawBuffer;
    while (dwRawFileSize) {
               // skip leading white space
       while (dwRawFileSize && !isgraph(*pLine)) {
            pLine++;
            dwRawFileSize -= sizeof(CHAR);
            }
       if (!dwRawFileSize)  // anything left to do ?
           break;

       //
       // filter out REM comment lines
       //

       if (!_strnicmp(pLine, achREM, sizeof(achREM) - sizeof(CHAR)) &&
           !isgraph(pLine[sizeof(achREM) - sizeof(CHAR)]))
          {
           while (dwRawFileSize && !ISEOL(*pLine)) {
                  pLine++;
                  dwRawFileSize -= sizeof(CHAR);
                  }
           continue;
           }

       if (bConfig)  {
           //
           // filter out country= setting we will create our own based
           // on current country ID and codepage.
           //
           pTmp = IsConfigCommand(achCOUNTRY, sizeof(achCOUNTRY) - sizeof(CHAR), pLine);
           if (pTmp) {
               while (dwRawFileSize && !ISEOL(*pLine)) {
                      pLine++;
                      dwRawFileSize -= sizeof(CHAR);
                      }
               continue;
               }

           // filter out shell= command, saving /E:nn parameter
           pTmp = IsConfigCommand(achSHELL, sizeof(achSHELL) - sizeof(CHAR),pLine);
           if (pTmp) {
                       // skip leading white space
               while (!isgraph(*pTmp) && !ISEOL(*pTmp)) {
                      dwRawFileSize -= sizeof(CHAR);
                      pTmp++;
                      }

                  /*  if for a third party shell (not SCS command.com)
                   *     append the whole thing thru /c parameter
                   *  else
                   *     append user specifed /e: parameter
                   */
               if (!_strnicmp(achSYSROOT,pTmp,sizeof(achSYSROOT)-sizeof(CHAR)))
                  {
                   dw = sizeof(achSYSROOT) - sizeof(CHAR);
                   }
               else if (!_strnicmp(achSysRoot,pTmp, strlen(achSysRoot)))
                  {
                   dw = strlen(achSysRoot);
                   }
               else  {
                   dw = 0;
                   }

               if (!dw ||
                   _strnicmp(achCOMMAND,pTmp+dw,sizeof(achCOMMAND)-sizeof(CHAR)) )
                  {
                   pPartyShell = pTmp;
                   }
               else {
                   do {
                      while (*pTmp != '/' && !ISEOL(*pTmp))  // save "/e:"
                             pTmp++;

                      if(ISEOL(*pTmp))
                          break;

                      if (!_strnicmp(pTmp,achENV,sizeof(achENV)-sizeof(CHAR)))
                          pEnvParam = pTmp;

                      pTmp++;

                      } while(1);        // was: while (!ISEOL(*pTmp));
                                         // we have break form this loop now,
                                         // and don't need in additional macro..

                   }

                       // skip the "shell=" line
               while (dwRawFileSize && !ISEOL(*pLine)) {
                      pLine++;
                      dwRawFileSize -= sizeof(CHAR);
                      }
               continue;

               }  // END, really is "shell=" line!
           }

#if defined(KOREA)

           // If current Code page is 437(US), system won't load HBIOS related modules.

           if (!fKoreanCP) {
               if (IsHBIOSConfig(achFontSys, sizeof(achFontSys)-sizeof(CHAR), pLine)) {
                    while (dwRawFileSize && !ISEOL(*pLine)) {
                           pLine++;
                           dwRawFileSize -= sizeof(CHAR);
                    }
                    continue;
               }
               if (IsHBIOSConfig(achHBIOS, sizeof(achHBIOS)-sizeof(CHAR), pLine)) {
                    while (dwRawFileSize && !ISEOL(*pLine)) {
                           pLine++;
                           dwRawFileSize -= sizeof(CHAR);
                    }
                    continue;
               }
               if (IsHBIOSConfig(achDispSys, sizeof(achDispSys)-sizeof(CHAR), pLine)) {
                    while (dwRawFileSize && !ISEOL(*pLine)) {
                           pLine++;
                           dwRawFileSize -= sizeof(CHAR);
                    }
                    continue;
               }
           }
#endif // KOREA

       /** Filter out PROMPT, SET and PATH from autoexec.nt
           for environment merging. The output we prepare here is
           a multiple strings buffer which has the format as :
           "EnvName_1 NULL EnvValue_1 NULL[EnvName_n NULL EnvValue_n NULL] NULL
           We don't take them out from the file because command.com needs
           them.
        **/
       if (!bConfig)
            if (!_strnicmp(pLine, achPROMPT, sizeof(achPROMPT) - 1)){
                // prompt command found.
                // the syntax of prompt can be eithe
                // prompt xxyyzz        or
                // prompt=xxyyzz
                //
                strcpy(lpszzEnv, achPROMPT);    // get the name
                lpszzEnv += sizeof(achPROMPT);
                cchEnv += sizeof(achPROMPT);
                pTmp = pLine + sizeof(achPROMPT) - 1;
                // skip possible white chars
                while (!isgraph(*pTmp) && !ISEOL(*pTmp))
                pTmp++;
                if (*pTmp == '=') {
                    pTmp++;
                    while(!isgraph(*pTmp) && !ISEOL(*pTmp))
                        pTmp++;
                }
                while(!ISEOL(*pTmp)){
                    *lpszzEnv++ = *pTmp++;
                    cchEnv++;
                }
                // null terminate this
                // it may be "prompt NULL NULL" for delete
                // or "prompt NULL something NULL"
                *lpszzEnv++ = '\0';
                cchEnv++;
            }
            else if (!_strnicmp(pLine, achPATH, sizeof(achPATH) - 1)) {
                    // PATH was found, it has the same syntax as
                    // PROMPT
                    strcpy(lpszzEnv, achPATH);
                    lpszzEnv += sizeof(achPATH);
                    cchEnv += sizeof(achPATH);
                    pTmp = pLine + sizeof(achPATH) - 1;
                    while (!isgraph(*pTmp) && !ISEOL(*pTmp))
                        pTmp++;
                    if (*pTmp == '=') {
                        pTmp++;
                        while(!isgraph(*pTmp) && !ISEOL(*pTmp))
                            pTmp++;
                    }
                    while(!ISEOL(*pTmp)) {
                        *lpszzEnv++ = *pTmp++;
                        cchEnv++;
                    }
                    *lpszzEnv++ = '\0';
                    cchEnv++;
                 }
                 else if(!_strnicmp(pLine, achSET, sizeof(achSET) -1 )) {
                        // SET was found, first search for name
                        pTmp = pLine + sizeof(achSET) - 1;
                        while(!isgraph(*pTmp) && !ISEOL(*pTmp))
                             pTmp ++;
                        // get the name
                        lpszName = pTmp;
                        // looking for the '='
                        // note that the name can have white characters
                        while (!ISEOL(*lpszName) && *lpszName != '=')
                            lpszName++;
                        if (!ISEOL(*lpszName)) {
                            // copy the name
                            while (pTmp < lpszName) {
                                *lpszzEnv++ = *pTmp++;
                                cchEnv++;
                            }
                            *lpszzEnv++ = '\0';
                            cchEnv++;
                            // discard the '='
                            pTmp++;
                            // grab the value(may be nothing
                            while (!ISEOL(*pTmp)) {
                                *lpszzEnv++ = *pTmp++;
                                cchEnv++;
                            }
                            *lpszzEnv++ = '\0';
                            cchEnv++;
                        }
                      }


       dw = WriteExpanded(hTmpFile, pLine, dwRawFileSize);
       pLine += dw;
       dwRawFileSize -=dw;

       WriteFileAssert(hTmpFile,achEOL,sizeof(achEOL) - sizeof(CHAR));

       }  // END, while (dwRawFileSize)



    if (bConfig)  {
        UINT OemCP;
#if defined(JAPAN) || defined(KOREA)
        UINT ConsoleCP;
#endif // JAPAN || KOREA
        UINT CtryId;
        CHAR szCtryId[64]; // expect "nnn" only

         /*  Ensure that the country settings are in sync with NT This is
          *  especially important for DosKrnl file UPCASE tables. The
          *  doskrnl default is "CTRY_UNITED_STATES, 437". But we add the
          *  country= line to config.sys, even if is US,437, so that the DOS
          *  will know where the default country.sys is.
          */
        if (GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_IDEFAULTCOUNTRY,
                          szCtryId, sizeof(szCtryId) - 1) )
          {
           CtryId = strtoul(szCtryId,NULL,10);
           }
        else {
           CtryId = CTRY_UNITED_STATES;
           }

        OemCP = GetOEMCP();
#if defined(JAPAN) || defined(KOREA)
        ConsoleCP = GetConsoleOutputCP();
        if (OemCP != ConsoleCP)
            OemCP = ConsoleCP;
#endif // JAPAN || KOREA

        sprintf(achRawFile,
                "%s=%3.3u,%3.3u,%s\\system32\\%s.sys%s",
                achCOUNTRY, CtryId, OemCP, achSysRoot, achCOUNTRY, achEOL);
        WriteFileAssert(hTmpFile,achRawFile,strlen(achRawFile));



         /*  We cannot allow the user to set an incorrect shell= command
          *  so we will contruct the correct shell= command appending
          *  either (in order of precedence):
          *    1.    /c ThirdPartyShell
          *    2.    /e:NNNN
          *    3.    nothing
          *
          *  If there is a third party shell then we must turn the console
          *  on now since we no longer have control once system32\command.com
          *  spawns the third party shell.
          */

           // write shell=....
        sprintf(achRawFile,
                "%s=%s%s /p %s\\system32",
                achSHELL,achSysRoot, achCOMMAND, achSysRoot);
        WriteFileAssert(hTmpFile,achRawFile,strlen(achRawFile));

           // write extra string (/c ... or /e:nnn)
        if (pPartyShell && isgraph(*pPartyShell)) {
            pTmp = pPartyShell;
            while (!ISEOL(*pTmp))
                   pTmp++;
            }
        else if (pEnvParam && isgraph(*pEnvParam))  {
            pTmp = pEnvParam;
            while (isgraph(*pTmp))
                  pTmp++;
            }
        else {
            pTmp = NULL;
            }

        if (pTmp) {
            *pTmp = '\0';
            if (pPartyShell)  {
                cmdInitConsole();
                strcpy(achRawFile, " /c ");
                strncat(achRawFile, pPartyShell,sizeof(achRawFile)-3);
                }
            else if (pEnvParam) {
                strcpy(achRawFile, " ");
                strncat(achRawFile, pEnvParam,sizeof(achRawFile)-1);
                }

            achRawFile[sizeof(achRawFile)-1] = 0;
            WriteExpanded(hTmpFile, achRawFile, strlen(achRawFile));
            }

        WriteFileAssert(hTmpFile,achEOL,sizeof(achEOL) - sizeof(CHAR));
        }

    SetEndOfFile(hTmpFile);
    CloseHandle(hTmpFile);
    CloseHandle(hRawFile);
    free(pRawBuffer);
    if (!bConfig) {
        // shrink(or free) the memory
        if (cchEnv && lpszzcmdEnv16) {
            // doubld null terminate it
            lpszzcmdEnv16[cchEnv++] = '\0';
            // shrink the memory. If it fails, simple keep
            // it as is
            lpszzEnv = realloc(lpszzcmdEnv16, cchEnv);
            if (lpszzEnv != NULL)
                lpszzcmdEnv16 = lpszzEnv;
        }
        else {
            free(lpszzcmdEnv16);
            lpszzcmdEnv16 = NULL;
        }
    }

}




/*
 *  WriteExpanded - writes up to dwChars or EOL, expanding %SystemRoot%
 *                  returns number of CHARs processed in buffer
 *                          (not number of bytes actually written)
 */
DWORD WriteExpanded(HANDLE hFile,  CHAR *pch, DWORD dwChars)
{
  DWORD dw;
  DWORD dwSave = dwChars;
  CHAR  *pSave = pch;


  while (dwChars && !ISEOL(*pch)) {
        if (*pch == '%' &&
            !_strnicmp(pch, achSYSROOT, sizeof(achSYSROOT)-sizeof(CHAR)) )
           {
            dw = pch - pSave;
            if (dw)  {
                WriteFileAssert(hFile, pSave, dw);
                }

            WriteFileAssert(hFile, achSysRoot, dwLenSysRoot);

            pch     += sizeof(achSYSROOT)-sizeof(CHAR);
            pSave    = pch;
            dwChars -= sizeof(achSYSROOT)-sizeof(CHAR);
            }
#ifdef JAPAN
        // device=...\$disp.sys /hs=%HardwareScroll%
        else if (*pch == '%' &&
            !_strnicmp(pch, achHARDWARESCROLL, sizeof(achHARDWARESCROLL)-sizeof(CHAR)) )
           {
            dw = pch - pSave;
            if (dw)  {
                WriteFileAssert(hFile, pSave, dw);
                }

            WriteFileAssert(hFile, achHardwareScroll, dwLenHardwareScroll);

            pch     += sizeof(achHARDWARESCROLL)-sizeof(CHAR);
            pSave    = pch;
            dwChars -= sizeof(achHARDWARESCROLL)-sizeof(CHAR);
            }
#endif // JAPAN
#if defined(KOREA) // looking for hbios.sys
        else if (fKoreanCP && *pch  == 'h' &&
            !_strnicmp(pch, achHBIOS, sizeof(achHBIOS)-sizeof(CHAR)) )
           {
            dw = pch - pSave;
            if (dw)  {
                WriteFileAssert(hFile, pSave, dw);
                }

            WriteFileAssert(hFile, achHotkeyOption, dwLenHotkeyOption);

            pch     += sizeof(achHBIOS)-sizeof(CHAR);
            pSave    = pch;
            dwChars -= sizeof(achHBIOS)-sizeof(CHAR);
        }
#endif // KOREA
        else {
            pch++;
            dwChars -= sizeof(CHAR);
            }
        }

  dw = pch - pSave;
  if (dw) {
      WriteFileAssert(hFile, pSave, dw);
      }

  return (dwSave - dwChars);
}




/*
 *  WriteFileAssert
 *
 *  Cecks for error in wrtiting the temp boot file,
 *  If one occurs displays warning popup and terminates the vdm.
 *
 */
void WriteFileAssert(HANDLE hFile, CHAR *pBuff, DWORD dwBytes)
{
  DWORD dw;
  CHAR  ach[MAX_PATH];

  if (!WriteFile(hFile, pBuff, dwBytes, &dw, NULL) ||
       dw  != dwBytes)
     {

      GetTempPath(MAX_PATH, ach);
      ach[63] = '\0';
      RcErrorDialogBox(ED_INITTMPFILE, ach, NULL);
      TerminateVDM();  // skip cleanup since I insist that we exit!
      }
}
#ifdef JAPAN
//
// MSKK 8/26/1993 V-KazuyS
// Get HardwareScroll type from registry
// this parameter also use console.
//
DWORD GetHardwareScroll( PCHAR achHardwareScroll, int size )
{
    HKEY  hKey;
    DWORD dwType;
    DWORD retCode;
    CHAR  szBuf[256];
    DWORD cbData=256L;
    DWORD num;
    PCHAR psz;

// Get HardwareScroll type ( ON, LC or OFF ) from REGISTRY file.

  // OPEN THE KEY.

    retCode = RegOpenKeyEx (
                      HKEY_LOCAL_MACHINE,         // Key handle at root level.
                      "HARDWARE\\DEVICEMAP\\VIDEO", // Path name of child key.
                      0,                            // Reserved.
                      KEY_EXECUTE,                  // Requesting read access.
                      &hKey );               // Address of key to be returned.

// If retCode != 0 then we cannot find section in Register file
    if ( retCode ) {
#ifdef JAPAN_DBG
        DbgPrint( "NTVDM: RegOpenKeyEx failed %xh\n", retCode );
#endif
        strcpy( achHardwareScroll, "off");
        return ( strlen("off") );
    }

    dwType = REG_SZ;

// Query for line from REGISTER file
    retCode = RegQueryValueEx(  hKey,
                                "\\Device\\Video0",
                                NULL,
                                &dwType,
                                szBuf,
                                &cbData);

    szBuf[sizeof(szBuf)-1] = '\0';

    if ( retCode ) {
#ifdef JAPAN_DBG
        DbgPrint( "NTVDM: RegQueryValueEx failed %xh\n", retCode );
#endif
        strcpy( achHardwareScroll, "off");
        return ( strlen("off") );
    }

    RegCloseKey(hKey);

#ifdef JAPAN_DBG
    DbgPrint( "NTVDM: Get \\Device\\Video0=[%s]\n", szBuf );
#endif
    psz = strchr( (szBuf+1), '\\' ); // skip \\REGISTRY\\   *
#ifdef JAPAN_DBG
    DbgPrint( "NTVDM: skip \\registry\\ [%s]\n", psz );
#endif
    if ( psz != NULL )
        psz = strchr( (psz+1), '\\' ); // skip Machine\\    *

    if ( psz == NULL ) {
#ifdef JAPAN_DBG
        DbgPrint( "NTVDM: Illegal value[%s]h\n", szBuf );
#endif
        strcpy( achHardwareScroll, "off" );
        return ( strlen("off") );
    }

    psz++;

#ifdef JAPAN_DBG
    DbgPrint( "NTVDM: Open 2nd Key=[%s]\n", psz );
#endif

    retCode = RegOpenKeyEx (
                      HKEY_LOCAL_MACHINE,         // Key handle at root level.
                      psz,                      // Path name of child key.
                      0,                            // Reserved.
                      KEY_EXECUTE,                  // Requesting read access.
                      &hKey );               // Address of key to be returned.

// If retCode != 0 then we cannot find section in Register file
    if ( retCode ) {
#ifdef JAPAN_DBG
        DbgPrint( "NTVDM: RegOpenKeyEx failed %xh\n", retCode );
#endif
        strcpy( achHardwareScroll, "off" );
        return ( strlen("off") );
    }

    dwType = REG_SZ;

// Query for line from REGISTER file
    retCode = RegQueryValueEx(  hKey,
                                "ConsoleFullScreen.HardwareScroll",
                                NULL,
                                &dwType,
                                szBuf,
                                &cbData);

    if ( retCode ) {
#ifdef JAPAN_DBG
        DbgPrint( "NTVDM: RegQueryValueEx failed %xh\n", retCode );
#endif
        strcpy( achHardwareScroll, "off" );
        return ( strlen("off") );
    }

    RegCloseKey(hKey);

#ifdef JAPAN_DBG
    DbgPrint( "NTVDM: Get FullScreenHardwareScroll=[%s]\n", szBuf );
#endif

    num = ( lstrlen(szBuf)+1 > size ) ? size : lstrlen(szBuf)+1;
    RtlCopyMemory( achHardwareScroll, szBuf, num );
    achHardwareScroll[num] = '\0';

#ifdef JAPAN_DBG
    DbgPrint( "NTVDM: Set %HardwareScroll%=[%s]\n", achHardwareScroll );
#endif

    return num;
}
#endif // JAPAN

#if defined(KOREA)
/*
 * 8/05/1996 bklee
 * Get keyboard layout from system and set hotkey option for hbios.sys
 * Here are hotkey options for HBIOS.SYS.
 *
 *      Keyboard Type    Hangul          Hanja
 * 1        101a         r + alt         r + ctrl     : default
 * 2        101b         r + ctrl        r + alt
 * 3        103          Hangul          Hanja
 * 4        84           alt + shift     ctrl + shift
 * 5        86           Hangul          Hanja
 * 6        101c         l shift + space l ctrl + space
 * 7        64                                        : N/A. map to default
 */

DWORD GetHotkeyOption( PCHAR achHotkeyOption, UINT size )
{
      // GetKeyboardType(1) return 1 to 6 as sub-keyboard type.
      // No 7 sub-keyboard type will be returned.
      UINT HotkeyIndex[6] = { 4, 5, 1, 2, 6, 3 };
      UINT SubKeyType, HotkeyOption;

      if ( GetKeyboardType(0) == 8 )  { // KOREAN Keyboard layout

           SubKeyType = GetKeyboardType(1);

           if ( SubKeyType > 0 && SubKeyType < 7 )
                HotkeyOption = HotkeyIndex[SubKeyType - 1];
           else
                HotkeyOption = 1; // Set to default.

           wsprintf(achHotkeyOption, "hbios.sys /K:%d", HotkeyOption);
      }
      else
           strcpy(achHotkeyOption, "hbios.sys");
      return(strlen(achHotkeyOption));
}
#endif // KOREA