/*****************************************************************/
/** Microsoft LAN Manager **/
/** Copyright(c) Microsoft Corp., 1988-1990 **/
/*****************************************************************/
/**** hexedit.c - Generic sector based hex editor function call
*
* Fill out a HexEditParm structure, and call HexEdit. It provides
* a simple hex editor with a few misc features.
*
* Is single threaded & non-reentrant, but can be called from any thread.
*
* External uses:
* he - allows editing of a file
*
* Written: Ken Reneris 2/25/91
*
*/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <stdio.h>
#include <windows.h>
#include "hexedit.h"
#include <stdarg.h>
#define LOCAL static
// #define LOCAL
#define BUFSZ 512
#define SECTORMASK 0xFFFFFE00L
#define SECTORSHIFT 9
static UCHAR rghexc[] = "0123456789ABCDEF";
struct Buffer {
struct Buffer *next;
ULONG offset;
ULONG physloc;
USHORT flag;
USHORT len;
UCHAR *data;
UCHAR orig [BUFSZ];
} ;
#define FB_DIRTY 0x0001 // Buffer may be dirty
#define FB_BAD 0x0002 // Buffer had an error when read in
#define LINESZ 16 // 16 bytes per display line
#define LINESHIFT 4L
#define LINEMASK 0xFFFFFFF0L
#define CELLPERLINE 80
struct Global {
struct HexEditParm *Parm;
HANDLE Console; // Internal console handle
HANDLE StdIn;
NTSTATUS (*Read)(); // Copy of HeGbl.Parm->read
ULONG Flag; // Copy of HeGbl.Parm->flag
ULONG TotLen; // Sizeof item being editted
ULONG TotLen1; // Sizeof item being editted - 1
USHORT Lines; // # of lines in edit screen
USHORT LineTot; // # of lines totaly in use
USHORT PageSz; // sizeof page in bytes
USHORT TopLine; // TopLine edit starts at
ULONG CurOffset; // Relative offset of first line
ULONG CurEditLoc; // Location with cursor
UCHAR *CurPT; // Pointer to data where cursor is
UCHAR CurAscIndent;
UCHAR DWidth; // width of dispalymode
UCHAR na;
struct Buffer *CurBuf; // Buffer which cursor is in
ULONG CurFlag; // Cursor info
ULONG DisplayMode; // Mask of displaymode
ULONG ItemWrap; // Mask of displaymode wrap
UCHAR rgCols[LINESZ]; // Location within lines
ULONG UpdatePos; // Location waitin to be updated
struct Buffer *Buf; // List of buffer's read in
PCHAR_INFO pVioBuf; // Virtual screen
COORD dwVioBufSize; // Dimensions of HeGbl.pVioBuf
COORD CursorPos; // Position of cursor
WORD AttrNorm; // Attribute of plain text
WORD AttrHigh; // Attribute of highlighted text
WORD AttrReverse; // Attribute of reverse text
WORD na3;
COORD dwSize; // Original screen size
ULONG OrigMode; // Original screen mode
CONSOLE_CURSOR_INFO CursorInfo; // Original cursor info
PUCHAR SearchPattern;
} HeGbl;
#define D_BYTE 0 // DisplayMode
#define D_WORD 1
#define D_DWORD 3
#define FC_NIBBLE 0x0001 // Cursor on lower or upper nibble?
#define FC_TEXT 0x0002 // Cursor on Hex or Text
#define FC_INFLUSHBUF 0x1000 // So we don't recurse
#define FC_CURCENTER 0x2000 // if jumping to cursor, put in center
#define PUTCHAR(a,b,c) { a->Char.AsciiChar=b; a->Attributes=c; a++; }
//
// Internal prototypes
//
int heUpdateStats(), hePositionCursor(), heRefresh(), heSetDisp();
int heInitConsole(), heUpdateAllLines(), heInitScr(), heSetCursorBuf(), heUpdateFncs();
VOID _CRTAPI1 heDisp (USHORT, USHORT, PUCHAR, ...);
USHORT heIOErr (UCHAR *str, ULONG loc, ULONG ploc, ULONG errcd);
int heFlushBuf (struct Buffer *pBuf);
VOID heEndConsole(), heGotoPosition(), heJumpToLink();
VOID heUpdateCurLine(), heUndo(), heCopyOut(), heCopyIn(), heSearch();
VOID heBox (USHORT x, USHORT y, USHORT len_x, USHORT len_y);
UCHAR heGetChar (PUCHAR keys);
VOID heFlushAllBufs (USHORT update);
VOID heFindMousePos (COORD);
VOID heShowBuf (ULONG, ULONG);
VOID heSetDisplayMode (ULONG mode);
#define RefreshDisp() heShowBuf(0, HeGbl.LineTot)
#define SetCurPos(a,b) { \
HeGbl.CursorPos.X = b; \
HeGbl.CursorPos.Y = a + HeGbl.TopLine; \
SetConsoleCursorPosition (HeGbl.Console, HeGbl.CursorPos); \
}
int (*vrgUpdateFnc[])() = {
NULL, // 0 - No update
heUpdateStats, // 1 - Update stats
hePositionCursor, // 2 - Cursor has new position
heUpdateAllLines, // 3 - Update all lines
heUpdateFncs, // 4 -
hePositionCursor, // 5 - Calc cursor before AllLines
heRefresh, // 6 - Clear lines
heSetDisp, // 7 - Draws init screen
// the following functions are only called once during init
heInitScr, // 8 - get's video mode, etc.
heInitConsole // 9 - setup console handle
} ;
#define U_NONE 0
#define U_NEWPOS 2
#define U_SCREEN 5
#define U_REDRAW 9
#define TOPLINE 4
#define LINEINDENT 1
#define HEXINDENT (10 + LINEINDENT)
#define ASCINDENT_BYTE (3*16 + HEXINDENT + 1)
#define ASCINDENT_WORD (5*8 + HEXINDENT + 1)
#define ASCINDENT_DWORD (9*4 + HEXINDENT + 1)
#define POS(l,c) (HeGbl.pVioBuf+CELLPERLINE*(l)+c)
USHORT vrgAscIndent[] = {
ASCINDENT_BYTE, ASCINDENT_WORD, 0, ASCINDENT_DWORD
};
UCHAR vrgDWidth[] = { 2, 4, 0, 8 };
LOCAL struct Buffer *vBufFree; // List of free buffers
LOCAL USHORT vUpdate;
LOCAL USHORT vRecurseLevel = 0;
LOCAL BOOL vInSearch = FALSE;
/*
* Prototypes
*/
struct Buffer *heGetBuf (ULONG);
void heSetUpdate (USHORT);
void heHexLine (struct Buffer *, USHORT, USHORT);
void heHexDWord (PCHAR_INFO, ULONG, WORD);
USHORT heLtoa (PCHAR_INFO, ULONG);
ULONG heHtou (UCHAR *);
VOID heCalcCursorPosition ();
VOID heGetString (PUCHAR s, USHORT len);
VOID heRightOne ();
VOID heLeftOne ();
NTSTATUS heWriteFile (HANDLE h, PUCHAR buffer, ULONG len);
NTSTATUS heReadFile (HANDLE h, PUCHAR buffer, ULONG len, PULONG br);
NTSTATUS heOpenFile (PUCHAR Name, PHANDLE handle, ULONG access);
/***
*
* HexEdit - Full screen HexEdit of data
*
* ename - pointer to name of what's being edited
* totlen - length of item being edited
* pRead - function which can read data from item
* pWrite - function which can write data to item
* handle - handle to pass to pRead & pWrite
* flag -
*
*
* All IO is assumed to be done on in 512 bytes on 512 byte boundrys
*
* pRead (handle, offset, data, &physloc)
* pWrite (handle, offset, data, &physloc)
*
*/
void HexEdit (pParm)
struct HexEditParm *pParm;
{
USHORT rc;
INPUT_RECORD Kd;
USHORT SkipCnt;
DWORD cEvents;
USHORT RepeatCnt;
BOOL bSuccess;
struct Global *PriorGlobal;
// code is not multi-threaded capable, but it can resurse.
vRecurseLevel++;
if (vRecurseLevel > 1) {
PriorGlobal = (struct Global *) GlobalAlloc (0, sizeof (HeGbl));
memcpy ((PUCHAR) PriorGlobal, (PUCHAR) &HeGbl, sizeof (HeGbl));
}
memset (&HeGbl, 0, sizeof (HeGbl));
HeGbl.Parm = pParm;
HeGbl.Flag = pParm->flag;
HeGbl.TotLen = pParm->totlen;
HeGbl.Read = pParm->read;
HeGbl.TotLen1 = HeGbl.TotLen ? HeGbl.TotLen - 1L : 0L;
pParm->flag = 0;
HeGbl.CurEditLoc = pParm->start; // Cursor starts here
HeGbl.CurOffset = HeGbl.CurEditLoc & LINEMASK; // Start at valid offset
HeGbl.CurFlag = FC_NIBBLE;
HeGbl.Console = INVALID_HANDLE_VALUE;
heSetDisplayMode ((HeGbl.Flag & FHE_DWORD) ? D_DWORD : D_BYTE);
HeGbl.AttrNorm = pParm->AttrNorm ? pParm->AttrNorm : 3;
HeGbl.AttrHigh = pParm->AttrHigh ? pParm->AttrHigh : 15;
HeGbl.AttrReverse = pParm->AttrReverse ? pParm->AttrReverse : 112;
HeGbl.SearchPattern = GlobalAlloc (0, 512);
memset (HeGbl.SearchPattern, 0, 512);
RepeatCnt = 0;
vUpdate = U_REDRAW;
heSetUpdate (U_NONE); // get screen to redraw
for (; ;) {
if (RepeatCnt <= 1) {
if (vUpdate != U_NONE) { // Something to update?
if (SkipCnt++ > 10) {
SkipCnt = 0;
heSetUpdate (U_NONE);
continue;
}
cEvents = 0;
bSuccess = PeekConsoleInput( HeGbl.StdIn,
&Kd,
1,
&cEvents );
if (!bSuccess || cEvents == 0) {
heSetUpdate ((USHORT)(vUpdate-1));
continue;
}
} else {
SkipCnt = 0;
}
ReadConsoleInput (HeGbl.StdIn, &Kd, 1, &cEvents);
if (Kd.EventType != KEY_EVENT) {
if (Kd.EventType == MOUSE_EVENT &&
(Kd.Event.MouseEvent.dwButtonState & FROM_LEFT_1ST_BUTTON_PRESSED)) {
heFindMousePos(Kd.Event.MouseEvent.dwMousePosition);
}
continue; // Not a key
}
if (!Kd.Event.KeyEvent.bKeyDown)
continue; // Not a down stroke
if (Kd.Event.KeyEvent.wVirtualKeyCode == 0 || // ALT
Kd.Event.KeyEvent.wVirtualKeyCode == 0x10 || // SHIFT
Kd.Event.KeyEvent.wVirtualKeyCode == 0x11 || // CONTROL
Kd.Event.KeyEvent.wVirtualKeyCode == 0x14) // CAPITAL
continue;
RepeatCnt = Kd.Event.KeyEvent.wRepeatCount;
if (RepeatCnt > 20)
RepeatCnt = 20;
} else
RepeatCnt--;
switch (Kd.Event.KeyEvent.wVirtualKeyCode) {
case 0x21: /* PgUp */
if (HeGbl.CurOffset < HeGbl.PageSz)
HeGbl.CurOffset = 0L;
else HeGbl.CurOffset -= HeGbl.PageSz;
if (HeGbl.CurEditLoc < HeGbl.PageSz)
HeGbl.CurEditLoc = 0L;
else HeGbl.CurEditLoc -= HeGbl.PageSz;
heSetUpdate (U_SCREEN);
continue;
case 0x26: /* Up */
if (HeGbl.CurEditLoc >= LINESZ) {
HeGbl.CurEditLoc -= LINESZ;
heSetUpdate (U_NEWPOS);
}
continue;
case 0x22: /* PgDn */
if (HeGbl.TotLen > HeGbl.PageSz) {
if (HeGbl.CurOffset+HeGbl.PageSz+HeGbl.PageSz > HeGbl.TotLen1)
HeGbl.CurOffset = ((HeGbl.TotLen1-HeGbl.PageSz) & LINEMASK)+LINESZ;
else HeGbl.CurOffset += HeGbl.PageSz;
if (HeGbl.CurEditLoc+HeGbl.PageSz > HeGbl.TotLen1) {
HeGbl.CurEditLoc = HeGbl.TotLen1;
HeGbl.CurFlag &= ~FC_NIBBLE;
} else
HeGbl.CurEditLoc += HeGbl.PageSz;
heSetUpdate (U_SCREEN);
}
continue;
case 0x28: /* Down */
if (HeGbl.CurEditLoc+LINESZ <= HeGbl.TotLen1) {
HeGbl.CurEditLoc += LINESZ;
heSetUpdate (U_NEWPOS);
}
continue;
case 0x08: /* backspace */
case 0x25: /* Left */
if (HeGbl.CurFlag & FC_TEXT) {
if (HeGbl.CurEditLoc == 0L)
continue;
HeGbl.CurEditLoc--;
heSetUpdate (U_NEWPOS);
continue;
}
if (!(HeGbl.CurFlag & FC_NIBBLE)) {
HeGbl.CurFlag |= FC_NIBBLE;
heSetUpdate (U_NEWPOS);
continue;
}
HeGbl.CurFlag &= ~FC_NIBBLE;
heLeftOne ();
heSetUpdate (U_NEWPOS);
continue;
case 0x27: /* Right */
if (HeGbl.CurFlag & FC_TEXT) {
if (HeGbl.CurEditLoc >= HeGbl.TotLen1)
continue;
HeGbl.CurEditLoc++;
heSetUpdate (U_NEWPOS);
continue;
}
if (HeGbl.CurFlag & FC_NIBBLE) {
HeGbl.CurFlag &= ~FC_NIBBLE;
heSetUpdate (U_NEWPOS);
continue;
}
HeGbl.CurFlag |= FC_NIBBLE;
heRightOne ();
heSetUpdate (U_NEWPOS);
continue;
case 0x24: /* HOME */
if (Kd.Event.KeyEvent.dwControlKeyState &
(RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) {
HeGbl.CurEditLoc = 0L;
} else {
HeGbl.CurEditLoc &= LINEMASK;
}
if ((HeGbl.CurFlag & FC_TEXT) == 0)
HeGbl.CurEditLoc += HeGbl.DisplayMode;
if (HeGbl.CurEditLoc > HeGbl.TotLen1)
HeGbl.CurEditLoc = HeGbl.TotLen1;
HeGbl.CurFlag |= FC_NIBBLE;
heSetUpdate (U_NEWPOS);
continue;
case 0x23: /* END */
if (Kd.Event.KeyEvent.dwControlKeyState &
(RIGHT_CTRL_PRESSED | LEFT_CTRL_PRESSED)) {
HeGbl.CurEditLoc = HeGbl.TotLen1;
} else {
HeGbl.CurEditLoc = (HeGbl.CurEditLoc & LINEMASK) + LINESZ - 1;
}
HeGbl.CurFlag &= ~FC_NIBBLE;
if ((HeGbl.CurFlag & FC_TEXT) == 0)
HeGbl.CurEditLoc -= HeGbl.DisplayMode;
if (HeGbl.CurEditLoc > HeGbl.TotLen1)
HeGbl.CurEditLoc = HeGbl.TotLen1;
heSetUpdate (U_NEWPOS);
continue;
case 0x70: /* F1 */
switch (HeGbl.DisplayMode) {
case D_BYTE: heSetDisplayMode(D_WORD); break;
case D_WORD: heSetDisplayMode(D_DWORD); break;
case D_DWORD: heSetDisplayMode(D_BYTE); break;
}
heSetDisp ();
heSetUpdate (U_SCREEN);
continue;
case 0x71: /* F2 */
heGotoPosition ();
continue;
case 0x72: /* F3 */
heSearch ();
break; // BUGBUG: not done
case 0x73: /* F4 */
heCopyOut ();
heSetDisp ();
heSetUpdate (U_SCREEN);
continue;
case 0x74: /* F5 */
heCopyIn ();
heSetDisp ();
heSetUpdate (U_SCREEN);
continue;
case 0x75: /* F6 */
heJumpToLink ();
break;
case 0x79: /* F10 */
heUndo ();
continue;
case 0x0d:
if (HeGbl.Flag & FHE_ENTER) {
HeGbl.Parm->flag |= FHE_ENTER;
Kd.Event.KeyEvent.uChar.AsciiChar = 27; // fake an exit
}
break;
//case 0x75: /* F6 */
// if (HeGbl.Flag & FHE_F6) {
// HeGbl.Parm->flag |= FHE_F6;
// Kd.Event.KeyEvent.uChar.AsciiChar = 27; // fake an exit
// }
// break;
}
// Now check for a known char code...
if (Kd.Event.KeyEvent.uChar.AsciiChar == 27)
break;
if (Kd.Event.KeyEvent.uChar.AsciiChar == 9) {
HeGbl.CurFlag ^= FC_TEXT;
HeGbl.CurFlag |= FC_NIBBLE;
heSetUpdate (U_NEWPOS);
continue;
}
if (HeGbl.CurFlag & FC_TEXT) {
if (Kd.Event.KeyEvent.uChar.AsciiChar == 0)
continue;
heSetCursorBuf ();
*HeGbl.CurPT = Kd.Event.KeyEvent.uChar.AsciiChar;
heUpdateCurLine ();
if (HeGbl.CurEditLoc < HeGbl.TotLen1)
HeGbl.CurEditLoc++;
} else {
if (Kd.Event.KeyEvent.uChar.AsciiChar >= 'a' &&
Kd.Event.KeyEvent.uChar.AsciiChar <= 'z')
Kd.Event.KeyEvent.uChar.AsciiChar -= ('a' - 'A');
if (!((Kd.Event.KeyEvent.uChar.AsciiChar >= '0' &&
Kd.Event.KeyEvent.uChar.AsciiChar <= '9') ||
(Kd.Event.KeyEvent.uChar.AsciiChar >= 'A' &&
Kd.Event.KeyEvent.uChar.AsciiChar <= 'F')))
continue;
heSetCursorBuf ();
if (Kd.Event.KeyEvent.uChar.AsciiChar >= 'A')
Kd.Event.KeyEvent.uChar.AsciiChar -= 'A' - 10;
else Kd.Event.KeyEvent.uChar.AsciiChar -= '0';
if (HeGbl.CurFlag & FC_NIBBLE) {
*HeGbl.CurPT = (*HeGbl.CurPT & 0x0F) |
(Kd.Event.KeyEvent.uChar.AsciiChar << 4);
heUpdateCurLine ();
} else {
*HeGbl.CurPT = (*HeGbl.CurPT & 0xF0) |
Kd.Event.KeyEvent.uChar.AsciiChar;
heUpdateCurLine ();
heRightOne ();
}
HeGbl.CurFlag ^= FC_NIBBLE;
}
}
/*
* Free buffer memory
*/
for (; ;) {
rc = 0;
while (HeGbl.Buf) {
rc |= heFlushBuf (HeGbl.Buf);
HeGbl.CurBuf = HeGbl.Buf->next;
GlobalFree (HeGbl.Buf);
HeGbl.Buf = HeGbl.CurBuf;
}
if (!rc) // If something was flushed,
break; // then update the screen
heSetUpdate (U_SCREEN);
heSetUpdate (U_NONE);
} // and loop to free buffers (again)
vRecurseLevel--;
GlobalFree (HeGbl.SearchPattern);
heEndConsole ();
if (vRecurseLevel == 0) {
while (vBufFree) {
HeGbl.CurBuf = vBufFree->next;
GlobalFree (vBufFree);
vBufFree = HeGbl.CurBuf;
}
} else {
memcpy ((PUCHAR) &HeGbl, (PUCHAR) PriorGlobal, sizeof (HeGbl));
GlobalFree (PriorGlobal);
}
}
VOID heSetDisplayMode (ULONG mode)
{
PUCHAR p;
UCHAR d,i,j,h,len;
HeGbl.DisplayMode = mode;
HeGbl.CurAscIndent = (UCHAR)vrgAscIndent[HeGbl.DisplayMode];
HeGbl.DWidth = vrgDWidth[HeGbl.DisplayMode];
HeGbl.ItemWrap = (HeGbl.DisplayMode << 1) | 1;
i = HeGbl.DWidth;
j = i >> 1;
h = HEXINDENT;
len = LINESZ;
p = HeGbl.rgCols;
while (len) {
for (d=0; d < i; d += 2) {
len--;
*(p++) = i - (d+2) + h;
}
h += i + 1;
}
}
VOID heRightOne ()
{
if (HeGbl.CurEditLoc & HeGbl.DisplayMode) {
HeGbl.CurEditLoc--;
} else {
HeGbl.CurEditLoc += HeGbl.ItemWrap;
}
if (HeGbl.CurEditLoc > HeGbl.TotLen1) {
HeGbl.CurEditLoc = HeGbl.TotLen1 & ~HeGbl.DisplayMode;
}
}
VOID heLeftOne ()
{
if ((HeGbl.CurEditLoc & HeGbl.DisplayMode) != HeGbl.DisplayMode) {
if (HeGbl.CurEditLoc < HeGbl.TotLen1) {
HeGbl.CurEditLoc++;
return ;
}
if (HeGbl.TotLen1 > HeGbl.DisplayMode) {
HeGbl.CurEditLoc |= HeGbl.DisplayMode;
}
}
if (HeGbl.CurEditLoc > HeGbl.ItemWrap) {
HeGbl.CurEditLoc -= HeGbl.ItemWrap;
return ;
}
HeGbl.CurEditLoc =
HeGbl.TotLen1 > HeGbl.DisplayMode ? HeGbl.DisplayMode : HeGbl.TotLen1;
}
VOID heUpdateCurLine ()
{
USHORT line;
for (; ;) {
HeGbl.CurBuf->flag |= FB_DIRTY;
line = (USHORT) ((HeGbl.CurEditLoc - HeGbl.CurOffset) >> LINESHIFT);
if (line+TOPLINE < HeGbl.LineTot - 1)
break;
heSetUpdate (U_NEWPOS);
heSetUpdate (U_NONE);
HeGbl.CurBuf = heGetBuf (HeGbl.CurEditLoc);
}
heHexLine (HeGbl.CurBuf, (USHORT)((HeGbl.CurEditLoc & LINEMASK) - HeGbl.CurBuf->offset), line);
heShowBuf (line+TOPLINE, 1);
heSetUpdate (U_NEWPOS);
if (HeGbl.Flag & FHE_KICKDIRTY) {
HeGbl.Parm->flag |= FHE_DIRTY;
SetEvent (HeGbl.Parm->Kick);
}
}
void heFindMousePos (Pos)
COORD Pos;
{
ULONG HoldLocation;
USHORT HoldFlag;
USHORT i;
if (Pos.Y < TOPLINE || Pos.Y >= TOPLINE+HeGbl.Lines)
return ;
heSetUpdate (U_NONE);
HoldLocation = HeGbl.CurEditLoc;
HoldFlag = (USHORT)HeGbl.CurFlag;
//
// Take the cheap way out - simply run all the possibilities for the
// target line looking for a match
//
HeGbl.CurEditLoc = HeGbl.CurOffset + ((Pos.Y-TOPLINE) << LINESHIFT);
for (i=0; i < LINESZ; i++, HeGbl.CurEditLoc++) {
HeGbl.CurFlag &= ~(FC_NIBBLE | FC_TEXT);
heCalcCursorPosition ();
if (Pos.X == HeGbl.CursorPos.X)
break;
HeGbl.CurFlag |= FC_NIBBLE;
heCalcCursorPosition ();
if (Pos.X == HeGbl.CursorPos.X)
break;
HeGbl.CurFlag |= FC_TEXT;
heCalcCursorPosition ();
if (Pos.X == HeGbl.CursorPos.X)
break;
}
if (Pos.X == HeGbl.CursorPos.X) {
heSetUpdate (U_NEWPOS);
} else {
HeGbl.CurEditLoc = HoldLocation;
HeGbl.CurFlag = HoldFlag;
heCalcCursorPosition ();
}
}
VOID heSetUpdate (USHORT i)
{
USHORT u;
if (vUpdate) {
/*
* There's already some outstanding update going on
* Get updat level down to current one.
*/
while (vUpdate > i) {
vrgUpdateFnc [u=vUpdate] ();
if (u == vUpdate) // If vUpdate changed, then
vUpdate--; // we might have recursed
}
}
vUpdate = i;
}
int heSetCursorBuf ()
{
// Calc HeGbl.CurBuf, HeGbl.CurPT
if (HeGbl.CurBuf) {
if (HeGbl.CurEditLoc >= HeGbl.CurBuf->offset &&
HeGbl.CurEditLoc < HeGbl.CurBuf->offset+BUFSZ ) {
HeGbl.CurPT = HeGbl.CurBuf->data + (HeGbl.CurEditLoc - HeGbl.CurBuf->offset);
return 0;
}
}
HeGbl.CurBuf = heGetBuf (HeGbl.CurEditLoc);
HeGbl.CurPT = HeGbl.CurBuf->data + (HeGbl.CurEditLoc - HeGbl.CurBuf->offset);
return 0;
}
int hePositionCursor ()
{
heCalcCursorPosition ();
SetConsoleCursorPosition (HeGbl.Console, HeGbl.CursorPos);
if ((HeGbl.Flag & FHE_KICKMOVE) && (HeGbl.CurEditLoc != HeGbl.Parm->editloc)) {
HeGbl.Parm->editloc = HeGbl.CurEditLoc;
SetEvent (HeGbl.Parm->Kick);
}
return 0;
}
VOID heCalcCursorPosition ()
{
USHORT lin, col;
// Verify HeGbl.CurOffset
if (HeGbl.CurEditLoc < HeGbl.CurOffset) {
HeGbl.CurOffset = HeGbl.CurEditLoc & LINEMASK;
if (HeGbl.CurFlag & FC_CURCENTER) {
if (HeGbl.CurOffset > (ULONG) HeGbl.PageSz / 2) {
HeGbl.CurOffset -= (HeGbl.PageSz / 2) & LINEMASK;
} else {
HeGbl.CurOffset = 0;
}
}
heSetUpdate (U_SCREEN);
}
if (HeGbl.CurEditLoc >= HeGbl.CurOffset+HeGbl.PageSz) {
HeGbl.CurOffset = ((HeGbl.CurEditLoc - HeGbl.PageSz) & LINEMASK) + LINESZ;
if (HeGbl.CurFlag & FC_CURCENTER) {
if (HeGbl.CurOffset+HeGbl.PageSz < HeGbl.TotLen) {
HeGbl.CurOffset += (HeGbl.PageSz / 2) & LINEMASK;
} else {
if (HeGbl.TotLen > HeGbl.PageSz) {
HeGbl.CurOffset = ((HeGbl.TotLen - HeGbl.PageSz) & LINEMASK) + LINESZ;
}
}
}
heSetUpdate (U_SCREEN);
}
lin = (USHORT) ((ULONG) HeGbl.CurEditLoc - HeGbl.CurOffset) >> LINESHIFT;
if (HeGbl.CurFlag & FC_TEXT) {
col = (USHORT) (HeGbl.CurEditLoc & ~LINEMASK) + HeGbl.CurAscIndent+1;
} else {
col = HeGbl.rgCols [HeGbl.CurEditLoc & ~LINEMASK] +
(HeGbl.CurFlag & FC_NIBBLE ? 0 : 1);
}
HeGbl.CursorPos.Y = lin + TOPLINE + HeGbl.TopLine;
HeGbl.CursorPos.X = col;
}
heUpdateAllLines ()
{
struct Buffer *next, *pBuf;
USHORT line, u;
ULONG loc;
HeGbl.CurBuf = pBuf = NULL;
/*
* Free up any buffers which are before the HeGbl.CurOffset
*/
if (!(HeGbl.CurFlag & FC_INFLUSHBUF)) {
while (HeGbl.Buf) {
if (HeGbl.Buf->offset+BUFSZ >= HeGbl.CurOffset)
break;
heFlushBuf (HeGbl.Buf);
/*
* Unlink buffer & put it on the free list
*/
next = HeGbl.Buf->next;
HeGbl.Buf->next = vBufFree;
vBufFree = HeGbl.Buf;
HeGbl.Buf = next;
}
}
/*
* Display each hex line now
*/
loc = HeGbl.CurOffset; // starting offset
for (line=0; line<HeGbl.Lines; line++) { // for each line
if (pBuf == NULL) { // do we have the buffer?
pBuf = heGetBuf (loc); // no, go get it
u = (USHORT) (loc - pBuf->offset); // calc offset into this buffer
}
heHexLine (pBuf, u, line); // dump this line
loc += LINESZ; // move offsets foreward one line
u += LINESZ;
if (u >= BUFSZ) { // did we exceed the current buf?
pBuf = pBuf->next; // yes, move to next one
u = 0;
if (pBuf && loc < pBuf->offset) // verify buffer is right offs
pBuf = NULL; // no, let heGetBuf find it
}
}
// Cause screen to be refreshed
heShowBuf (TOPLINE, HeGbl.Lines);
/*
* All lines have been displayed, free up any extra buffers
* at the end of the chain
*/
if (pBuf && !(HeGbl.CurFlag & FC_INFLUSHBUF)) {
next = pBuf->next; // get extra buffers
pBuf->next = NULL; // terminate active list
pBuf = next;
while (pBuf) {
heFlushBuf (pBuf); // flush this buffer
next = pBuf->next; // move it to the free list
// and get next buffer to flush
pBuf->next = vBufFree;
vBufFree = pBuf;
pBuf = next;
}
}
HeGbl.CurFlag &= ~FC_CURCENTER;
return 0;
}
int heFlushBuf (pBuf)
struct Buffer *pBuf;
{
ULONG loc, ploc;
USHORT c;
NTSTATUS status;
if ((pBuf->flag & FB_DIRTY) == 0 ||
memcmp (pBuf->data, pBuf->orig, pBuf->len) == 0)
return (0); // buffer isn't dirty, return
// We may need to call heSetUpdate - setting this bit will
// stop FlushBuf from being recursed.
HeGbl.CurFlag |= FC_INFLUSHBUF;
loc = pBuf->offset;
ploc = pBuf->physloc;
if (HeGbl.Flag & (FHE_VERIFYONCE | FHE_VERIFYALL)) {
heSetUpdate (U_NONE); // make sure screen current
heBox (12, TOPLINE+1, 55, 8);
heDisp (TOPLINE+3, 14, "%HWrite changes to %S?", HeGbl.Parm->ename);
heDisp (TOPLINE+7, 14, "Press '%HY%N'es or '%HN%N'o");
if (HeGbl.Flag & FHE_VERIFYALL) {
if (HeGbl.Flag & FHE_PROMPTSEC) {
heDisp (TOPLINE+4, 14, "Sector %H%D%N has been modifed",ploc/BUFSZ);
} else {
heDisp (TOPLINE+4, 14, "Location %H%X%N-%H%X%N has been modifed",ploc,ploc+BUFSZ);
}
heDisp (TOPLINE+8, 14, "Press '%HA%N' to save all updates");
}
RefreshDisp ();
c = heGetChar ("YNA"); // wait for key stroke
heSetDisp (); // Get heBox off of screen
heSetUpdate (U_SCREEN); // we will need to update display
if (c == 'N') {
memcpy (pBuf->data, pBuf->orig, pBuf->len);
HeGbl.CurFlag &= ~FC_INFLUSHBUF;
if (HeGbl.Flag & FHE_KICKDIRTY) {
HeGbl.Parm->flag |= FHE_DIRTY;
SetEvent (HeGbl.Parm->Kick);
}
return (0);
}
if (c == 'A')
HeGbl.Flag &= ~FHE_VERIFYALL;
}
if (HeGbl.Parm->write) {
/*
* Write new buffer.
*/
do {
status = HeGbl.Parm->write(HeGbl.Parm->handle, loc, pBuf->data,pBuf->len,ploc);
if (!status) {
pBuf->flag &= ~FB_DIRTY;
break;
}
} while (heIOErr ("WRITE ERROR!", loc, ploc, status) == 'R');
}
HeGbl.Flag &= ~FHE_VERIFYONCE;
HeGbl.CurFlag &= ~FC_INFLUSHBUF;
return (1);
}
VOID heJumpToLink ()
{
PULONG p;
ULONG l;
if (HeGbl.DisplayMode != D_DWORD || (HeGbl.Flag & FHE_JUMP) == 0)
return;
if (((HeGbl.CurEditLoc & ~3) + 3) > HeGbl.TotLen1)
return;
heSetCursorBuf ();
p = (PULONG) (((ULONG) HeGbl.CurPT) & ~3); // Round to dword location
l = *p;
if ((l & 3) == 0)
l += 3;
if (l > HeGbl.TotLen1) {
Beep (500, 100);
return;
}
HeGbl.CurFlag |= FC_NIBBLE | FC_CURCENTER;
HeGbl.CurEditLoc = l;
heSetDisp (); // clear & restore orig screen (does not draw)
heSetUpdate (U_SCREEN); // redraw hex area
}
VOID heSearch ()
{
ULONG i, j, sec, off, slen, len, upd;
struct HexEditParm ei;
PUCHAR data, data2;
if (vInSearch || HeGbl.Lines < 25) {
return ;
}
vInSearch = TRUE;
heFlushAllBufs (1); // Before we start flush & free all buffers
heSetUpdate (U_NONE);
memset ((PUCHAR) &ei, 0, sizeof (ei));
ei.ename = "Entering Search";
ei.flag = FHE_EDITMEM | FHE_ENTER;
ei.mem = HeGbl.SearchPattern;
ei.totlen = 512;
ei.ioalign = 1;
ei.Console = HeGbl.Console;
ei.AttrNorm = HeGbl.AttrNorm;
ei.AttrHigh = HeGbl.AttrHigh;
ei.AttrReverse = HeGbl.AttrReverse;
ei.CursorSize = HeGbl.Parm->CursorSize;
i = 24;
if (HeGbl.Lines < i) {
if (HeGbl.Lines < 12) {
goto abort;
}
i = HeGbl.Lines - 8;
}
ei.TopLine = HeGbl.Lines + TOPLINE - i;
ei.MaxLine = i + 1;
if (HeGbl.DisplayMode == D_DWORD) {
ei.flag |= FHE_DWORD;
}
HexEdit (&ei); // Get search parameters
vInSearch = FALSE;
if (!(ei.flag & FHE_ENTER))
goto abort;
for (i=0, slen=0; i < 512; i++) { // find last non-zero byte
if (HeGbl.SearchPattern[i]) { // in search patter
slen = i+1;
}
}
if (slen == 0) {
goto abort;
}
heBox (12, TOPLINE+1, 48, 6);
heDisp (TOPLINE+3, 14, "Searching for pattern");
SetCurPos (TOPLINE+5, 24);
RefreshDisp ();
i = HeGbl.CurEditLoc + 1;
sec = i & SECTORMASK; // current sector
off = i - sec; // offset within sector checking
upd = 0;
while (sec < HeGbl.TotLen) {
if (++upd >= 50) {
upd = 0;
heFlushAllBufs (0); // free memory
heDisp (TOPLINE+6, 14, "Searching offset %H%D ", sec);
heShowBuf (TOPLINE+6, 1);
}
data = heGetBuf(sec)->data;
nextoff:
while (off < BUFSZ && data[off] != HeGbl.SearchPattern[0]) {
off++;
}
if (off >= BUFSZ) {
// next sector...
sec += BUFSZ;
off = 0;
continue;
}
len = (off + slen) > BUFSZ ? BUFSZ - off : slen;
for (i=0; i < len; i++) {
if (data[off+i] != HeGbl.SearchPattern[i]) {
off += 1;
goto nextoff;
}
}
if (i < slen) {
// data is continued in next buffer..
if (sec+BUFSZ >= HeGbl.TotLen) {
off += 1;
goto nextoff;
}
data2 = heGetBuf (sec+BUFSZ)->data;
j = (BUFSZ-off);
len = slen - j;
for (i=0; i < len; i++) {
if (data2[i] != HeGbl.SearchPattern[j+i]) {
off += 1;
goto nextoff;
}
}
}
// found match
if (sec + off + slen > HeGbl.TotLen1) {
break;
}
HeGbl.CurEditLoc = sec + off;
heSetDisp (); // clear & restore orig screen (does not draw)
heSetUpdate (U_SCREEN); // redraw hex area
return ;
}
heBox (12, TOPLINE+1, 48, 6);
heDisp (TOPLINE+3, 14, "Data was not found");
heDisp (TOPLINE+5, 17, "Press %HEnter%N to continue");
SetCurPos (TOPLINE+6, 17);
RefreshDisp ();
heGetChar ("\r");
abort:
heSetDisp (); // clear & restore orig screen (does not draw)
heSetUpdate (U_SCREEN); // redraw hex area
return ;
}
VOID heGotoPosition ()
{
UCHAR s[16];
ULONG l;
heSetUpdate (U_NONE);
heBox (12, TOPLINE+1, 41, 6);
heDisp (TOPLINE+3, 14, "Enter offset from %H%X%N - %H%X", 0L, HeGbl.TotLen1);
heDisp (TOPLINE+5, 14, "Offset: ");
SetCurPos (TOPLINE+5, 22);
RefreshDisp ();
heGetString (s, 10);
if (s[0]) {
l = heHtou (s);
if (l <= HeGbl.TotLen1) {
HeGbl.CurFlag |= FC_NIBBLE;
HeGbl.CurEditLoc = l;
}
}
if (!(HeGbl.CurFlag & FC_TEXT) && !(HeGbl.CurEditLoc & HeGbl.DisplayMode)) {
// On xword boundry and not in text mode, adjust so cursor
// is on the first byte which is being displayed of this
// xword
HeGbl.CurEditLoc += HeGbl.DisplayMode;
if (HeGbl.CurEditLoc > HeGbl.TotLen1)
HeGbl.CurEditLoc = HeGbl.TotLen1;
}
HeGbl.CurFlag |= FC_CURCENTER; // set cursor to center in window moves
heSetDisp (); // clear & restore orig screen (does not draw)
heSetUpdate (U_SCREEN); // redraw hex area
}
VOID heGetString (PUCHAR s, USHORT len)
{
UCHAR i[50];
DWORD cb;
ReadFile( HeGbl.StdIn, i, 50, &cb, NULL );
if(cb >= 2 && (i[cb - 2] == 0x0d || i[cb - 2] == 0x0a) ) {
i[cb - 2] = 0; // Get rid of CR LF
}
i[ cb - 1] = 0;
memcpy (s, i, len);
s[len] = 0;
}
/***
* heCopyOut - Copies data to output filename
*/
VOID heCopyOut ()
{
UCHAR s[24];
ULONG len, rem, upd, u;
HANDLE h;
NTSTATUS status;
struct Buffer *pB;
heFlushAllBufs (1); // Before we start flush & free all buffers
heSetUpdate (U_NONE);
heBox (12, TOPLINE+1, 48, 6);
heDisp (TOPLINE+3, 14, "Copy stream to filename (%H%D%N Bytes)", HeGbl.TotLen);
heDisp (TOPLINE+5, 14, "Filename: ");
SetCurPos (TOPLINE+5, 24);
RefreshDisp ();
heGetString (s, 19);
if (s[0] == 0)
return;
status = heOpenFile (s, &h, GENERIC_WRITE);
if (NT_SUCCESS(status)) {
len = upd = 0;
rem = HeGbl.TotLen;
while (NT_SUCCESS(status) && rem){
if (upd++ > 50) {
upd = 0;
heFlushAllBufs (0); // free memory
heDisp (TOPLINE+6, 14, "Bytes written %H%D ", len);
heShowBuf (TOPLINE+6, 1);
RefreshDisp ();
}
u = rem > BUFSZ ? BUFSZ : rem;
pB = heGetBuf (len);
status = heWriteFile (h, pB->data, u);
rem -= u;
len += BUFSZ;
}
CloseHandle(h);
}
if (!NT_SUCCESS(status)) {
heBox (15, TOPLINE+1, 33, 6);
heDisp (TOPLINE+3, 17, "%HCopy failed");
heDisp (TOPLINE+4, 17, "Error code %X", status);
heDisp (TOPLINE+5, 17, "Press %HA%N to abort");
RefreshDisp ();
heGetChar ("A");
}
}
/***
* heCopyIn - Copies data to output filename
*/
VOID
heCopyIn ()
{
UCHAR s[24];
ULONG holdEditLoc, rem, u, br;
struct Buffer *pB;
char *pErr;
HANDLE h;
NTSTATUS status;
heSetUpdate (U_NONE);
heBox (12, TOPLINE+1, 48, 6);
heDisp (TOPLINE+3, 14, "Input from filename (%H%D%N Bytes)", HeGbl.TotLen);
heDisp (TOPLINE+5, 14, "Filename: ");
SetCurPos (TOPLINE+5, 24);
RefreshDisp ();
heGetString (s, 19);
heSetDisp (); // Get heBox off of screen
if (s[0] == 0) {
return;
}
status = heOpenFile (s, &h, GENERIC_READ);
if (NT_SUCCESS(status)) {
rem = HeGbl.TotLen;
holdEditLoc = HeGbl.CurEditLoc;
HeGbl.CurEditLoc = 0;
while (NT_SUCCESS(status) && rem) {
pB = heGetBuf (HeGbl.CurEditLoc);
u = rem > BUFSZ ? BUFSZ : rem;
status = heReadFile (h, pB->data, u, &br);
if (memcmp (pB->data, pB->orig, pB->len)) {
pB->flag |= FB_DIRTY; // it's changed
HeGbl.CurFlag |= FC_CURCENTER;
heSetUpdate (U_SCREEN);
heSetUpdate (U_NONE); // Update screen
if (HeGbl.Flag & FHE_KICKDIRTY) {
HeGbl.Parm->flag |= FHE_DIRTY;
// DosSemClear (HeGbl.Parm->sem); BUGBUG
}
}
heFlushAllBufs (1);
if (NT_SUCCESS(status) && br != u) {
pErr = "Smaller then data";
}
rem -= u;
HeGbl.CurEditLoc += BUFSZ;
}
if (NT_SUCCESS(status)) {
heReadFile (h, s, 1, &br);
if (br) // then what we are editting
pErr = "Larger then data";
}
CloseHandle(h);
}
if (!NT_SUCCESS(status) || pErr) {
heBox (15, TOPLINE+1, 33, 6);
if (pErr) {
heDisp (TOPLINE+3, 17, "Import file is:");
heDisp (TOPLINE+4, 17, pErr);
heDisp (TOPLINE+5, 17, "Press %HC%N to continue");
} else {
heDisp (TOPLINE+3, 17, "%HImport failed");
heDisp (TOPLINE+4, 17, "Error code %X", status);
heDisp (TOPLINE+5, 17, "Press %HA%N to abort");
}
RefreshDisp ();
heGetChar ("CA");
}
HeGbl.CurEditLoc = holdEditLoc;
}
VOID
heFlushAllBufs (USHORT update)
{
struct Buffer *next;
USHORT rc;
for (; ;) {
rc = 0;
while (HeGbl.Buf) {
rc |= heFlushBuf (HeGbl.Buf);
next = HeGbl.Buf->next;
HeGbl.Buf->next = vBufFree;
vBufFree = HeGbl.Buf;
HeGbl.Buf = next;
}
if (!rc) // If something was flushed,
break; // then update the screen
if (update) {
heSetUpdate (U_SCREEN);
heSetUpdate (U_NONE);
}
} // and loop to free buffers (again)
}
VOID heBox (x, y, len_x, len_y)
USHORT x, y, len_x, len_y;
{
CHAR_INFO blank[CELLPERLINE];
PCHAR_INFO pt, pt1;
USHORT c, lc;
pt = blank;
for (c=len_x; c; c--) { /* Construct blank line */
PUTCHAR (pt, ' ', HeGbl.AttrNorm); /* with background color*/
}
blank[0].Char.AsciiChar = blank[lc=len_x-1].Char.AsciiChar = '�';
for (c=0; c <= len_y; c++) /* blank each line */
memcpy (POS(c+y,x), blank, (pt - blank) * sizeof (CHAR_INFO));
pt = POS(y,x);
pt1 = POS(y+len_y, x);
for (c=0; c < len_x; c++) /* Draw horz lines */
pt[c].Char.AsciiChar = pt1[c].Char.AsciiChar = '�';
pt [ 0].Char.AsciiChar = '�'; /* Put corners on */
pt [lc].Char.AsciiChar = '�';
pt1 [ 0].Char.AsciiChar = '�';
pt1 [lc].Char.AsciiChar = '�';
}
VOID heUndo ()
{
struct Buffer *pBuf;
USHORT flag;
flag = 0;
for (pBuf=HeGbl.Buf; pBuf; pBuf = pBuf->next)
if (pBuf->flag & FB_DIRTY) {
flag = 1;
pBuf->flag &= ~FB_DIRTY;
memcpy (pBuf->data, pBuf->orig, pBuf->len);
}
if (flag) {
heSetUpdate (U_SCREEN);
if (HeGbl.Flag & FHE_KICKDIRTY) {
HeGbl.Parm->flag |= FHE_DIRTY;
SetEvent (HeGbl.Parm->Kick);
}
}
}
void heHexLine (pBuf, u, line)
struct Buffer *pBuf;
USHORT u, line;
{
PCHAR_INFO pt, hex, asc;
UCHAR *data, *orig;
UCHAR len, mlen, c, d, i, j;
WORD a;
ULONG l;
WORD AttrNorm = HeGbl.AttrNorm;
data = pBuf->data + u;
orig = pBuf->orig + u;
pt = HeGbl.pVioBuf + (line+TOPLINE) * CELLPERLINE;
hex = pt + HEXINDENT;
asc = pt + HeGbl.CurAscIndent;
l = pBuf->offset + u;
if (l & ((ULONG) BUFSZ-1)) {
heHexDWord (pt+LINEINDENT, pBuf->physloc + u,
AttrNorm);
} else {
heHexDWord (pt+LINEINDENT, pBuf->physloc + u,
HeGbl.AttrHigh);
}
if (pBuf->flag & FB_BAD) { // If read error on
pt[LINEINDENT+8].Char.AsciiChar = 'E'; // this sector, then
pt[LINEINDENT+8].Attributes = HeGbl.AttrHigh; // flag it
} else
pt[LINEINDENT+8].Char.AsciiChar = ' ';
if (l + LINESZ > HeGbl.TotLen) { // if EOF
if (l >= HeGbl.TotLen) { // Totally blankline?
PUTCHAR (asc, ' ', AttrNorm);
PUTCHAR (asc, ' ', AttrNorm);
mlen = 0;
for (len=0; len < 9; len++)
pt[len].Char.AsciiChar = ' ';
goto blankline;
}
len = mlen = (UCHAR) (HeGbl.TotLen - l); // Clip line
} else
len = mlen = (UCHAR) LINESZ; // Full line
PUTCHAR (asc, '*', AttrNorm);
switch (HeGbl.DisplayMode) {
case D_BYTE:
while (len--) {
c = *(data++);
a = c == *(orig++) ? AttrNorm : HeGbl.AttrReverse;
PUTCHAR (hex, rghexc [c >> 4], a);
PUTCHAR (hex, rghexc [c & 0x0F], a);
hex++;
PUTCHAR (asc, (c < ' ' || c > '~') ? '.' : c, a);
}
pt[((LINESZ/2)*3+HEXINDENT)-1].Char.AsciiChar = '-';
break;
default:
hex--;
i = HeGbl.DWidth;
j = i >> 1;
while (len) {
hex += i;
for (d=0; d<j; d++) {
if (len) {
len--;
c = *(data++);
a = c == *(orig++) ? AttrNorm : HeGbl.AttrReverse;
hex->Attributes = a;
hex->Char.AsciiChar = rghexc[c & 0x0F];
hex--;
hex->Attributes = a;
hex->Char.AsciiChar = rghexc[c >> 4];
hex--;
PUTCHAR (asc, (c < ' ' || c > '~') ? '.' : c, a);
} else {
hex->Attributes = AttrNorm;
hex->Char.AsciiChar = '?';
hex--;
hex->Attributes = AttrNorm;
hex->Char.AsciiChar = '?';
hex--;
}
}
hex += i + 1;
}
break;
}
PUTCHAR (asc, '*', AttrNorm);
blankline:
while (mlen++ < LINESZ)
PUTCHAR (asc, ' ', AttrNorm);
asc = pt + HeGbl.CurAscIndent;
while (hex < asc)
PUTCHAR (hex, ' ', AttrNorm);
}
heInitScr ()
{
CONSOLE_SCREEN_BUFFER_INFO Mode;
CONSOLE_CURSOR_INFO CursorInfo;
USHORT li;
GetConsoleScreenBufferInfo(HeGbl.Console, &Mode);
if (HeGbl.Parm->MaxLine) {
HeGbl.TopLine = (USHORT)HeGbl.Parm->TopLine;
li = (USHORT)HeGbl.Parm->MaxLine; // +1; adjust for no fnc key line
} else {
li = Mode.srWindow.Bottom - Mode.srWindow.Top + 1;
if (li < 10)
li = 10;
Mode.dwSize.Y = li;
}
if (Mode.dwSize.X < 80)
Mode.dwSize.X = 80;
if (!SetConsoleScreenBufferSize(HeGbl.Console, Mode.dwSize)) {
Mode.srWindow.Bottom -= Mode.srWindow.Top;
Mode.srWindow.Right -= Mode.srWindow.Left;
Mode.srWindow.Top = 0;
Mode.srWindow.Left = 0;
SetConsoleWindowInfo(HeGbl.Console, TRUE, &Mode.srWindow);
SetConsoleScreenBufferSize(HeGbl.Console, Mode.dwSize);
}
HeGbl.Lines = li - TOPLINE - 1;
HeGbl.PageSz = HeGbl.Lines * LINESZ;
HeGbl.LineTot = li;
if (HeGbl.pVioBuf)
GlobalFree (HeGbl.pVioBuf);
HeGbl.pVioBuf = (PCHAR_INFO) GlobalAlloc (0,
(HeGbl.LineTot+1)*CELLPERLINE*sizeof(CHAR_INFO));
HeGbl.dwVioBufSize.X = CELLPERLINE;
HeGbl.dwVioBufSize.Y = HeGbl.LineTot +
(HeGbl.TopLine*CELLPERLINE*sizeof(CHAR_INFO));
GetConsoleCursorInfo (HeGbl.Console, &CursorInfo);
CursorInfo.bVisible = TRUE;
CursorInfo.dwSize = (ULONG) HeGbl.Parm->CursorSize ? HeGbl.Parm->CursorSize : 100;
SetConsoleCursorInfo (HeGbl.Console, &CursorInfo);
return heSetDisp ();
}
int heInitConsole ()
{
CONSOLE_SCREEN_BUFFER_INFO screenMode;
DWORD mode;
HeGbl.StdIn = GetStdHandle (STD_INPUT_HANDLE);
GetConsoleMode (HeGbl.StdIn, &mode);
HeGbl.OrigMode = mode;
SetConsoleMode (HeGbl.StdIn, mode | ENABLE_LINE_INPUT | ENABLE_ECHO_INPUT |
ENABLE_MOUSE_INPUT | ENABLE_WINDOW_INPUT );
if (HeGbl.Flag & FHE_SAVESCRN) {
HeGbl.Console = CreateConsoleScreenBuffer(
GENERIC_WRITE | GENERIC_READ,
FILE_SHARE_WRITE,
NULL,
CONSOLE_TEXTMODE_BUFFER,
NULL );
SetConsoleActiveScreenBuffer (HeGbl.Console);
} else {
HeGbl.Console = HeGbl.Parm->Console;
if (HeGbl.Console == INVALID_HANDLE_VALUE)
HeGbl.Console = GetStdHandle( STD_OUTPUT_HANDLE );
GetConsoleScreenBufferInfo(HeGbl.Console, &screenMode);
HeGbl.dwSize = screenMode.dwSize;
}
GetConsoleCursorInfo(HeGbl.Console, &HeGbl.CursorInfo);
return 0;
}
VOID heEndConsole ()
{
CONSOLE_SCREEN_BUFFER_INFO Mode;
PCHAR_INFO pt;
ULONG u;
SetConsoleMode (HeGbl.StdIn, HeGbl.OrigMode);
if (HeGbl.Flag & FHE_SAVESCRN) {
CloseHandle (HeGbl.Console);
if (HeGbl.Parm->Console == INVALID_HANDLE_VALUE)
SetConsoleActiveScreenBuffer (GetStdHandle(STD_OUTPUT_HANDLE));
else SetConsoleActiveScreenBuffer (HeGbl.Parm->Console);
} else {
if (!SetConsoleScreenBufferSize(HeGbl.Console, HeGbl.dwSize)) {
GetConsoleScreenBufferInfo(HeGbl.Console, &Mode);
Mode.srWindow.Bottom -= Mode.srWindow.Top;
Mode.srWindow.Right -= Mode.srWindow.Left;
Mode.srWindow.Top = 0;
Mode.srWindow.Left = 0;
SetConsoleWindowInfo(HeGbl.Console, TRUE, &Mode.srWindow);
SetConsoleScreenBufferSize(HeGbl.Console, HeGbl.dwSize);
}
if (HeGbl.LineTot <= HeGbl.dwSize.Y) {
HeGbl.dwSize.Y--;
pt = POS(HeGbl.LineTot - 1,0);
for (u=HeGbl.dwSize.X; u; u--) {
PUTCHAR (pt, ' ', HeGbl.AttrNorm);
}
heShowBuf (HeGbl.LineTot - 1, 1);
}
HeGbl.dwSize.X = 0;
SetConsoleCursorPosition (HeGbl.Console, HeGbl.dwSize);
SetConsoleCursorInfo (HeGbl.Console, &HeGbl.CursorInfo);
}
if (HeGbl.pVioBuf) {
GlobalFree (HeGbl.pVioBuf);
HeGbl.pVioBuf = NULL;
}
}
heRefresh ()
{
RefreshDisp ();
if (HeGbl.Flag & FHE_KICKDIRTY) {
HeGbl.Parm->flag |= FHE_DIRTY;
SetEvent (HeGbl.Parm->Kick);
}
return 0;
}
int heSetDisp ()
{
PCHAR_INFO pt, pt1;
USHORT u;
pt = POS(0,0);
for (u=HeGbl.LineTot * CELLPERLINE; u; u--) {
PUTCHAR (pt, ' ', HeGbl.AttrNorm);
}
heDisp (1, 5, "Edit: %H%S", HeGbl.Parm->ename);
heDisp (2, 5, "Size: %X (%D)", HeGbl.TotLen, HeGbl.TotLen);
heDisp (1, 40, "Position:");
for (pt1=POS(1,50), u=0; u<30; u++, pt1++)
pt1->Attributes = HeGbl.AttrHigh;
//if (HeGbl.Parm->MaxLine == 0) {
u = HeGbl.LineTot - 1;
heDisp (u, 0, "%HF1%N:Toggle");
heDisp (u,11, "%HF2%N:Goto");
if (!vInSearch) {
heDisp (u,20, "%HF3%N:Search");
}
heDisp (u,31, "%HF4%N:Export");
heDisp (u,42, "%HF5%N:Import");
if (HeGbl.DisplayMode == D_DWORD && (HeGbl.Flag & FHE_JUMP) != 0)
heDisp (u,53, "%HF6%N:Jump");
else heDisp (u,53, " ");
heDisp (u,66, "%HF10%N:Undo");
//if (HeGbl.Flag & FHE_F6)
// heDisp (u,51, "%HF6%N:PSec");
//}
return 0;
}
int heUpdateFncs ()
{
heShowBuf (HeGbl.LineTot - 1, 1);
return 0;
}
int heUpdateStats ()
{
COORD dwBufferCoord;
SMALL_RECT lpWriteRegion;
heHexDWord (POS(1, 50), HeGbl.CurEditLoc, HeGbl.AttrHigh);
heLtoa (POS(1, 60), HeGbl.CurEditLoc);
dwBufferCoord.X = 50;
dwBufferCoord.Y = 1;
lpWriteRegion.Left = 50;
lpWriteRegion.Top = HeGbl.TopLine + 1;
lpWriteRegion.Right = 74;
lpWriteRegion.Bottom = HeGbl.TopLine + 1;
WriteConsoleOutputA (
HeGbl.Console,
HeGbl.pVioBuf,
HeGbl.dwVioBufSize, // size of VioBuf
dwBufferCoord, // location in VioBuf to write
&lpWriteRegion // location to write on display
);
SetConsoleCursorPosition (HeGbl.Console, HeGbl.CursorPos); // redisplay cursor
return 0;
}
VOID heShowBuf (ULONG StartingLine, ULONG NoLines)
{
COORD dwBufferCoord;
SMALL_RECT lpWriteRegion;
dwBufferCoord.X = (SHORT)0;
dwBufferCoord.Y = (SHORT)StartingLine;
StartingLine += HeGbl.TopLine;
lpWriteRegion.Left = (SHORT)0;
lpWriteRegion.Top = (SHORT)StartingLine;
lpWriteRegion.Right = (SHORT)(CELLPERLINE-1);
lpWriteRegion.Bottom = (SHORT)(StartingLine+NoLines-1);
WriteConsoleOutputA (
HeGbl.Console,
HeGbl.pVioBuf,
HeGbl.dwVioBufSize, // size of VioBuf
dwBufferCoord, // location in VioBuf to write
&lpWriteRegion // location to write on display
);
}
struct Buffer *heGetBuf (loc)
ULONG loc;
{
struct Buffer **ppBuf, *pBuf;
ULONG ioalign;
USHORT len;
NTSTATUS status;
loc &= SECTORMASK;
ppBuf = &HeGbl.Buf;
while (pBuf = *ppBuf) {
if (pBuf->offset >= loc) {
if (pBuf->offset == loc) // buffer the correct offset?
return pBuf; // yup - all done
break; // it's not here
}
ppBuf = &pBuf->next; // try the next one
}
/*
* buffer was not in list - it should be insterted before ppBuf
*/
ioalign = HeGbl.Parm->ioalign;
if (vBufFree) {
pBuf = vBufFree;
vBufFree = vBufFree->next;
} else
pBuf = (struct Buffer *)
GlobalAlloc (0, sizeof(struct Buffer)+BUFSZ+ioalign);
pBuf->data = (PUCHAR)(((ULONG)pBuf+sizeof(struct Buffer)+ioalign)&~ioalign);
pBuf->offset = loc;
pBuf->physloc= loc; // Assume physloc is logical offset
pBuf->flag = 0;
// Link this buffer in now! In case we recurse (due to read-error)
pBuf->next = *ppBuf; // link in this new buffer
*ppBuf = pBuf;
if (loc + BUFSZ > HeGbl.TotLen) { // are we going to hit the EOF?
if (loc >= HeGbl.TotLen) { // is buffer completely passed EOF?
pBuf->len = 0;
goto nodata; // yes, then no data at all
}
len = (USHORT) (HeGbl.TotLen - loc); // else, clip to EOF
} else len = BUFSZ; // not pass eof, get a full buffer
pBuf->len = len;
if (HeGbl.Flag & FHE_EDITMEM) // Direct memory edit?
pBuf->data = HeGbl.Parm->mem + loc; // memory location of buffer
if (HeGbl.Read) {
/*
* Read buffer from file
*/
status = HeGbl.Read (HeGbl.Parm->handle, loc, pBuf->data, len, &pBuf->physloc);
if (status) {
// If read error, we will always retry once. Also clear buffer
// before retry in case read retreives some info
for (; ;) {
memset (pBuf->data, 0, len); // Clear read area
memset (pBuf->orig,0xff, len); // good effect
status = HeGbl.Read (HeGbl.Parm->handle, loc, pBuf->data, len, &pBuf->physloc);
if (!status)
break;
if (heIOErr ("READ ERROR!", loc, pBuf->physloc, status) == 'I') {
pBuf->flag |= FB_BAD;
break;
}
}
}
}
memcpy (pBuf->orig, pBuf->data, len); // make a copy of the data
nodata:
return pBuf;
}
USHORT heIOErr (UCHAR *str, ULONG loc, ULONG ploc, ULONG errcd)
{
USHORT c;
if (errcd == 0xFFFFFFFF)
return 'I';
heSetUpdate (U_NONE);
heBox (12, TOPLINE+1, 55, 8);
heDisp (TOPLINE+3, 14, str);
heDisp (TOPLINE+4, 14, "Error code %H%D%N, Offset %Xh, Sector %D",
errcd, loc, ploc / BUFSZ);
heDisp (TOPLINE+7, 14, "Press '%HR%N' to retry IO, or '%HI%N' to ignore");
RefreshDisp ();
c = heGetChar ("RI");
heSetDisp (); // Get heBox off of screen
heSetUpdate (U_SCREEN);
return c;
}
UCHAR heGetChar (keys)
PUCHAR keys;
{
INPUT_RECORD Kd;
DWORD cEvents;
UCHAR *pt;
for (; ;) {
Beep (500, 100);
for (; ;) {
ReadConsoleInput (HeGbl.StdIn, &Kd, 1, &cEvents);
if (Kd.EventType != KEY_EVENT)
continue; // Not a key
if (!Kd.Event.KeyEvent.bKeyDown)
continue; // Not a down stroke
if (Kd.Event.KeyEvent.wVirtualKeyCode == 0 || // ALT
Kd.Event.KeyEvent.wVirtualKeyCode == 0x10 || // SHIFT
Kd.Event.KeyEvent.wVirtualKeyCode == 0x11 || // CONTROL
Kd.Event.KeyEvent.wVirtualKeyCode == 0x14) // CAPITAL
continue;
break;
}
if (Kd.Event.KeyEvent.wVirtualKeyCode >= 'a' &&
Kd.Event.KeyEvent.wVirtualKeyCode <= 'z')
Kd.Event.KeyEvent.wVirtualKeyCode -= ('a' - 'A');
for (pt=keys; *pt; pt++) // Is this a key we are
if (Kd.Event.KeyEvent.wVirtualKeyCode == *pt)
return *pt; // looking for?
}
}
VOID _CRTAPI1
heDisp (line, col, pIn, ...)
USHORT line, col;
UCHAR *pIn;
{
register char c;
PCHAR_INFO pOut;
WORD attr;
USHORT u;
UCHAR *pt;
va_list args;
attr = HeGbl.AttrNorm;
pOut = POS(line,col);
va_start(args,pIn);
while (c = *(pIn++)) {
if (c != '%') {
PUTCHAR (pOut, c, attr);
continue;
}
switch (*(pIn++)) {
case 'S':
pt = va_arg(args, CHAR *);
while (*pt) {
PUTCHAR (pOut, *(pt++), attr);
}
break;
case 'X': /* Long HEX, fixed len */
heHexDWord (pOut, va_arg(args, ULONG), attr);
pOut += 8;
break;
case 'D': /* Long dec, varible len */
u = heLtoa (pOut, va_arg(args, ULONG));
while (u--) {
pOut->Attributes = attr;
pOut++;
}
break;
case 'H':
attr = HeGbl.AttrHigh;
break;
case 'N':
attr = HeGbl.AttrNorm;
break;
}
}
}
void heHexDWord (s, l, attr)
PCHAR_INFO s;
ULONG l;
WORD attr;
{
UCHAR d, c;
UCHAR *pt;
s += 8-1;
pt = (UCHAR *) &l;
for (d=0; d<4; d++) {
c = *(pt++);
s->Attributes = attr;
s->Char.AsciiChar = rghexc[c & 0x0F];
s--;
s->Attributes = attr;
s->Char.AsciiChar = rghexc[c >> 4];
s--;
}
}
USHORT heLtoa (s, l)
PCHAR_INFO s;
ULONG l;
{
static ULONG mask[] = { 0L,
1L,
10L,
100L,
1000L,
10000L,
100000L,
1000000L,
10000000L,
100000000L,
1000000000L,
};
static UCHAR comm[] = "xxxx,xx,xx,xx,xx";
PCHAR_INFO os;
UCHAR c;
USHORT i, j;
ULONG m;
if (l < 1000000000L) {
for (i=1; mask[i] <= l; i++) ;
if (l == 0L) // Make Zeros
i++;
} else
i = 11;
os = s;
j = i;
while (m = mask[--i]) {
c = (UCHAR) ((ULONG) l / m);
l -= m * c;
s->Char.AsciiChar = c + '0';
if (comm[i] == ',') {
s++;
s->Char.AsciiChar = ',';
}
s++;
}
i = (s - os); // remember how long the number was
while (j++ < 11) { /* Clear off some blank space after */
s->Char.AsciiChar = ' '; /* the number. */
s++;
}
return i;
}
ULONG heHtou (s)
UCHAR *s;
{
UCHAR c;
ULONG l;
l = 0;
for (; ;) {
c = *(s++);
if (c == 's' || c == 'S') { // Sector multiplier?
l = l * 512l;
break;
}
if (c >= 'a') c -= 'a' - 10;
else if (c >= 'A') c -= 'A' - 10;
else c -= '0';
if (c > 15)
break;
l = (l<<4) + c;
}
return l;
}
NTSTATUS
heOpenFile (PUCHAR name, PHANDLE fhan, ULONG access)
{
*fhan = CreateFile (
name,
access,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
OPEN_EXISTING,
0,
NULL );
if (*fhan == INVALID_HANDLE_VALUE && (access & GENERIC_WRITE)) {
*fhan = CreateFile (
name,
access,
FILE_SHARE_READ | FILE_SHARE_WRITE,
NULL,
CREATE_NEW,
0,
NULL );
}
return *fhan == INVALID_HANDLE_VALUE ? GetLastError() : STATUS_SUCCESS;
}
NTSTATUS
heReadFile (HANDLE h, PUCHAR buffer, ULONG len, PULONG br)
{
if (!ReadFile (h, buffer, len, br, NULL))
return GetLastError();
return STATUS_SUCCESS;
}
NTSTATUS
heWriteFile (HANDLE h, PUCHAR buffer, ULONG len)
{
ULONG bw;
if (!WriteFile (h, buffer, len, &bw, NULL))
return GetLastError();
return (bw != len ? ERROR_WRITE_FAULT : STATUS_SUCCESS);
}