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KBViewer.cpp
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KBViewer.cpp
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//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop
#include "KBViewer.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
#include "Disasm.h"
#include "KnowledgeBase.h"
#include "Main.h"
#include "Misc.h"
extern DWORD CodeBase;
extern DWORD CurProcAdr;
extern DWORD CurUnitAdr;
extern MDisasm Disasm;
extern BYTE *Code;
extern PInfoRec *Infos;
extern MKnowledgeBase KnowledgeBase;
extern TList *VmtList;
extern TList *OwnTypeList;
TFKBViewer_11011981 *FKBViewer_11011981;
//---------------------------------------------------------------------------
__fastcall TFKBViewer_11011981::TFKBViewer_11011981(TComponent* Owner)
: TForm(Owner)
{
UnitsNum = 0;
CurrIdx = -1;
CurrAdr = 0;
FromIdx = 0;
ToIdx = 0;
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::FormCreate(TObject *Sender)
{
lbIDR->Canvas->Font->Assign(lbIDR->Font);
lbKB->Canvas->Font->Assign(lbKB->Font);
ScaleForm(this);
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::ShowCode(DWORD adr, int idx)
{
bool outfixup;
int n, m, wid, maxwid, row;
int _firstProcIdx, _lastProcIdx;
DWORD Val, Adr;
TCanvas* canvas;
String line;
DISINFO DisInfo;
char disLine[100];
CurrIdx = idx;
CurrAdr = adr;
edtCurrIdx->Text = String(CurrIdx);
lPosition->Caption = String(CurrIdx - Position);
lbIDR->Clear();
canvas = lbIDR->Canvas; maxwid = 0;
for (m = 0; m < FMain_11011981->lbCode->Count; m++)
{
line = FMain_11011981->lbCode->Items->Strings[m];
//Ignore first byte (for symbol <)
int _bytes = line.Length() - 1;
//If instruction, ignore flags (last byte)
if (m) _bytes --;
//Extract original instruction
line = line.SubString(2, _bytes);
//For first row add prefix IDR:
if (!m) line = "IDR:" + line;
lbIDR->Items->Add(line);
wid = canvas->TextWidth(line); if (wid > maxwid) maxwid = wid;
}
lbIDR->ScrollWidth = maxwid + 2;
lbKB->Clear(); row = 0;
MProcInfo aInfo;
MProcInfo *pInfo = &aInfo;
maxwid = 0;
if (KnowledgeBase.GetProcInfo(CurrIdx, INFO_DUMP, pInfo))
{
cbUnits->Text = KnowledgeBase.GetModuleName(pInfo->ModuleID);
KnowledgeBase.GetProcIdxs(pInfo->ModuleID, &_firstProcIdx, &_lastProcIdx);
lblKbIdxs->Caption = String(_firstProcIdx) + " - " + String(_lastProcIdx);
canvas = lbKB->Canvas;
line = "KB:" + pInfo->ProcName;
lbKB->Items->Add(line); row++;
wid = canvas->TextWidth(line); if (wid > maxwid) maxwid = wid;
int instrLen, pos = 0;
DWORD curAdr = adr;
if (pInfo->FixupNum)
{
char *p = pInfo->Dump + 2*pInfo->DumpSz;
for (n = 0; n < pInfo->FixupNum; n++)
{
char fixupType = *p; p++;
int fixupOfs = *((DWORD*)p); p += 4;
WORD len = *((WORD*)p); p += 2;
String fixupName = String(p, len); p += len + 1;
while (pos <= fixupOfs && pos < pInfo->DumpSz)
{
instrLen = Disasm.Disassemble(pInfo->Dump + pos, (__int64)curAdr, &DisInfo, disLine);
if (!instrLen)
{
//return;
lbKB->Items->Add(Val2Str8(curAdr) + " ???"); row++;
pos++; curAdr++;
continue;
}
BYTE op = Disasm.GetOp(DisInfo.Mnem);
line = Val2Str8(curAdr) + " " + disLine;
outfixup = false;
if (pos + instrLen > fixupOfs)
{
if (DisInfo.Call)
{
line = Val2Str8(curAdr) + " call ";
outfixup = true;
}
else if (op == OP_JMP)
line = Val2Str8(curAdr) + " jmp ";
else
line += ";";
if (!SameText(fixupName, pInfo->ProcName))
{
line += fixupName;
}
else
{
Val = *((DWORD*)(Code + Adr2Pos(CurrAdr) + fixupOfs));
if (fixupType == 'J')
Adr = CurrAdr + fixupOfs + Val + 4;
else
Adr = Val;
line += Val2Str8(Adr);
}
}
lbKB->Items->Add(line);
if (outfixup) lbKB->Selected[row] = true;
row++;
wid = canvas->TextWidth(line); if (wid > maxwid) maxwid = wid;
pos += instrLen;
curAdr += instrLen;
}
}
}
while (pos < pInfo->DumpSz)
{
instrLen = Disasm.Disassemble(pInfo->Dump + pos, (__int64)curAdr, &DisInfo, disLine);
if (!instrLen)
{
lbKB->Items->Add(Val2Str8(curAdr) + " ???");
pos++; curAdr++;
continue;
}
line = Val2Str8(curAdr) + " " + disLine;
lbKB->Items->Add(line);
wid = canvas->TextWidth(line); if (wid > maxwid) maxwid = wid;
pos += instrLen;
curAdr += instrLen;
}
}
lbKB->ScrollWidth = maxwid + 2;
lbKB->TopIndex = 0;
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::bPrevClick(TObject *Sender)
{
if (CurrIdx != -1) ShowCode(CurrAdr, CurrIdx - 1);
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::bNextClick(TObject *Sender)
{
if (CurrIdx != -1) ShowCode(CurrAdr, CurrIdx + 1);
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::btnOkClick(TObject *Sender)
{
int m, k1, k2, ap, pos, pos1, pos2, Idx, val;
DWORD adr;
MProcInfo aInfo;
MProcInfo *pInfo = &aInfo;
PInfoRec recN;
String kbName, idrName, kbLine, idrLine;
if (KnowledgeBase.GetProcInfo(CurrIdx, INFO_DUMP | INFO_ARGS, pInfo))
{
adr = CurProcAdr; ap = Adr2Pos(adr);
if (ap < 0) return;
recN = GetInfoRec(adr);
if (!recN) return;
recN->procInfo->DeleteArgs();
FMain_11011981->StrapProc(ap, CurrIdx, pInfo, false, FMain_11011981->EstimateProcSize(CurProcAdr));
//Strap all selected items (in IDR list box)
if (lbKB->SelCount == lbIDR->SelCount)
{
k1 = 0; k2 = 0;
for (m = 0; m < lbKB->SelCount; m++)
{
kbLine = ""; idrLine = "";
for (; k1 < lbKB->Items->Count; k1++)
{
if (lbKB->Selected[k1])
{
kbLine = lbKB->Items->Strings[k1]; k1++;
break;
}
}
for (; k2 < lbIDR->Items->Count; k2++)
{
if (lbIDR->Selected[k2])
{
idrLine = lbIDR->Items->Strings[k2]; k2++;
break;
}
}
if (kbLine != "" && idrLine != "")
{
pos1 = kbLine.Pos("call");
pos2 = idrLine.Pos("call");
if (pos1 && pos2)
{
kbName = kbLine.SubString(pos1 + 4, kbLine.Length()).Trim();
idrName = idrLine.SubString(pos2 + 4, idrLine.Length()).Trim();
pos = idrName.Pos(";");
if (pos) idrName = idrName.SubString(1, pos - 1);
adr = 0;
if (TryStrToInt(String("$") + idrName, val)) adr = val;
ap = Adr2Pos(adr);
if (kbName != "" && ap >= 0)
{
recN = GetInfoRec(adr);
recN->procInfo->DeleteArgs();
WORD *uses = KnowledgeBase.GetModuleUses(KnowledgeBase.GetModuleID(cbUnits->Text.c_str()));
Idx = KnowledgeBase.GetProcIdx(uses, kbName.c_str(), Code + ap);
if (Idx != -1)
{
Idx = KnowledgeBase.ProcOffsets[Idx].NamId;
if (!KnowledgeBase.IsUsedProc(Idx))
{
if (KnowledgeBase.GetProcInfo(Idx, INFO_DUMP | INFO_ARGS, pInfo))
FMain_11011981->StrapProc(ap, Idx, pInfo, true, pInfo->DumpSz);
}
}
else
{
Idx = KnowledgeBase.GetProcIdx(uses, kbName.c_str(), 0);
if (Idx != -1)
{
Idx = KnowledgeBase.ProcOffsets[Idx].NamId;
if (!KnowledgeBase.IsUsedProc(Idx))
{
if (KnowledgeBase.GetProcInfo(Idx, INFO_DUMP | INFO_ARGS, pInfo))
FMain_11011981->StrapProc(ap, Idx, pInfo, false, FMain_11011981->EstimateProcSize(adr));
}
}
}
}
}
}
}
}
FMain_11011981->RedrawCode();
FMain_11011981->ShowUnitItems(FMain_11011981->GetUnit(CurUnitAdr), FMain_11011981->lbUnitItems->TopIndex, FMain_11011981->lbUnitItems->ItemIndex);
}
Close();
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::btnCancelClick(TObject *Sender)
{
Close();
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::edtCurrIdxChange(TObject *Sender)
{
try
{
ShowCode(CurrAdr, StrToInt(edtCurrIdx->Text));
}
catch (Exception &exception)
{
Application->ShowException(&exception);
}
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::cbUnitsChange(TObject *Sender)
{
WORD _moduleID;
int k, _firstProcIdx, _lastProcIdx, _idx;
MProcInfo _aInfo;
MProcInfo *_pInfo = &_aInfo;
Position = -1;
_moduleID = KnowledgeBase.GetModuleID(cbUnits->Text.c_str());
if (_moduleID != 0xFFFF)
{
if (KnowledgeBase.GetProcIdxs(_moduleID, &_firstProcIdx, &_lastProcIdx))
{
edtCurrIdx->Text = String(_firstProcIdx);
lblKbIdxs->Caption = String(_firstProcIdx) + " - " + String(_lastProcIdx);
for (k = _firstProcIdx; k <= _lastProcIdx; k++)
{
_idx = KnowledgeBase.ProcOffsets[k].ModId;
if (!KnowledgeBase.IsUsedProc(_idx))
{
if (KnowledgeBase.GetProcInfo(_idx, INFO_DUMP | INFO_ARGS, _pInfo))
{
if (MatchCode(Code + Adr2Pos(CurProcAdr), _pInfo))
{
edtCurrIdx->Text = String(_idx);
Position = _idx;
break;
}
}
}
}
}
}
if (Position == -1)
ShowCode(CurProcAdr, _firstProcIdx);
else
ShowCode(CurProcAdr, Position);
}
//---------------------------------------------------------------------------
void __fastcall TFKBViewer_11011981::FormShow(TObject *Sender)
{
if (!UnitsNum)
{
for (int n = 0; n < KnowledgeBase.ModuleCount; n++)
{
int ID = KnowledgeBase.ModuleOffsets[n].NamId;
const BYTE *p = KnowledgeBase.GetKBCachePtr(KnowledgeBase.ModuleOffsets[ID].Offset, KnowledgeBase.ModuleOffsets[ID].Size);
cbUnits->Items->Add(String((char*)(p + 4)));
UnitsNum++;
}
}
}
//---------------------------------------------------------------------------