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kolibrios/programs/develop/fp/utils/exe2kos/exe2kos.pp

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{$mode objfpc}
{$apptype console}
program exe2kos;
uses
SysUtils, Classes, ExeTypes, KosTypes;
const
ARGS_SIZE = 512;
PATH_SIZE = 512;
type
EExeError = class(Exception);
TExeImage = class;
TExeImageSection = class;
TExeImageSection = class
private
FExeImage: TExeImage;
FHeader: IMAGE_SECTION_HEADER;
FName: String;
procedure Read(var Buffer);
public
constructor Create(AExeImage: TExeImage; APosition: DWord);
property Name: String read FName;
property VirtualSize: DWord read FHeader.PhysicalAddress;
property SectionRVA: DWord read FHeader.VirtualAddress;
property PhysicalSize: DWord read FHeader.SizeOfRawData;
property PhysicalOffset: DWord read FHeader.PointerToRawData;
property ObjectFlags: DWord read FHeader.Characteristics;
end;
TExeImageSections = class
private
FCount: DWord;
FItems: array of TExeImageSection;
function GetItem(Index: DWord): TExeImageSection;
public
constructor Create(AExeImage: TExeImage; APosition, ACount: DWord);
destructor Destroy; override;
function ByName(AName: String): TExeImageSection;
property Count: DWord read FCount;
property Items[Index: DWord]: TExeImageSection read GetItem; default;
end;
TExeImage = class
private
FFileName: String;
FFileStream: TStream;
FDosHeader: IMAGE_DOS_HEADER;
FNTHeader: IMAGE_NT_HEADERS;
FSections: TExeImageSections;
procedure Read(var Buffer; Position, Size: Longint);
function GetSizeOfCode(): DWord;
function GetSizeOfInitData(): DWord;
function GetSizeOfUnInitData(): DWord;
function GetEntryPoint(): DWord;
function GetImageBase(): DWord;
function GetObjectAlign(): DWord;
function GetFileAlign(): DWord;
function GetImageSize(): DWord;
function GetHeaderSize(): DWord;
function GetStackReserveSize(): DWord;
function GetStackCommitSize(): DWord;
function GetHeapReserveSize(): DWord;
function GetHeapCommitSize(): DWord;
public
constructor Create(AFileName: String);
destructor Destroy; override;
property FileName: String read FFileName;
property Sections: TExeImageSections read FSections;
property SizeOfCode: DWord read GetSizeOfCode;
property SizeOfInitializedData: DWord read GetSizeOfInitData;
property SizeOfUninitializedData: DWord read GetSizeOfUnInitData;
property EntryPoint: DWord read FNTHeader.OptionalHeader.AddressOfEntryPoint{GetEntryPoint};
property ImageBase: DWord read FNTHeader.OptionalHeader.ImageBase{GetImageBase};
property ObjectAlign: DWord read GetObjectAlign;
property FileAlign: DWord read GetFileAlign;
property ImageSize: DWord read GetImageSize;
property HeaderSize: DWord read GetHeaderSize;
property StackReserveSize: DWord read GetStackReserveSize;
property StackCommitSize: DWord read GetStackCommitSize;
property HeapReserveSize: DWord read GetHeapReserveSize;
property HeapCommitSize: DWord read GetHeapCommitSize;
end;
constructor TExeImage.Create(AFileName: String);
begin
FFileName := AFileName;
FFileStream := TFileStream.Create(FFileName, fmOpenRead);
Read(FDosHeader, 0, SizeOf(FDosHeader));
if not FDosHeader.e_magic = IMAGE_DOS_SIGNATURE then
EExeError.Create('Unrecognized file format');
Read(FNTHeader, FDosHeader.e_lfanew, SizeOf(FNTHeader));
if FNTHeader.Signature <> IMAGE_NT_SIGNATURE then
EExeError.Create('Not a PE (WIN32 Executable) file');
FSections := TExeImageSections.Create(Self,
FDosHeader.e_lfanew + SizeOf(FNTHeader), FNTHeader.FileHeader.NumberOfSections);
end;
destructor TExeImage.Destroy;
begin
FSections.Free;
FFileStream.Free;
end;
procedure TExeImage.Read(var Buffer; Position, Size: Longint);
begin
FFileStream.Position := Position;
if FFileStream.Read(Buffer, Size) <> Size then
EExeError.Create('Damaged or unrecognized file');
end;
function TExeImage.GetSizeOfCode(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfCode;
end;
function TExeImage.GetSizeOfInitData(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfInitializedData;
end;
function TExeImage.GetSizeOfUnInitData(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfUninitializedData;
end;
function TExeImage.GetEntryPoint(): DWord;
begin
Result := FNTHeader.OptionalHeader.AddressOfEntryPoint;
end;
function TExeImage.GetImageBase(): DWord;
begin
Result := FNTHeader.OptionalHeader.ImageBase;
end;
function TExeImage.GetObjectAlign(): DWord;
begin
Result := FNTHeader.OptionalHeader.SectionAlignment;
end;
function TExeImage.GetFileAlign(): DWord;
begin
Result := FNTHeader.OptionalHeader.FileAlignment;
end;
function TExeImage.GetImageSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfImage;
end;
function TExeImage.GetHeaderSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfHeaders;
end;
function TExeImage.GetStackReserveSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfStackReserve;
end;
function TExeImage.GetStackCommitSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfStackCommit;
end;
function TExeImage.GetHeapReserveSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfHeapReserve;
end;
function TExeImage.GetHeapCommitSize(): DWord;
begin
Result := FNTHeader.OptionalHeader.SizeOfHeapCommit;
end;
constructor TExeImageSections.Create(AExeImage: TExeImage; APosition, ACount: DWord);
var
i: Integer;
begin
FCount := ACount;
SetLength(FItems, ACount);
for i := 0 to ACount - 1 do
begin
FItems[i] := TExeImageSection.Create(AExeImage, APosition);
Inc(APosition, SizeOf(IMAGE_SECTION_HEADER));
end;
end;
destructor TExeImageSections.Destroy;
var
i: Integer;
begin
for i := 0 to Length(FItems) - 1 do FItems[i].Free;
SetLength(FItems, 0);
end;
function TExeImageSections.GetItem(Index: DWord): TExeImageSection;
begin
Result := FItems[Index];
end;
function TExeImageSections.ByName(AName: String): TExeImageSection;
var
i: Integer;
begin
for i := 0 to Length(FItems) - 1 do
if FItems[i].Name = AName then
begin
Result := FItems[i];
Exit;
end;
Result := nil;
end;
constructor TExeImageSection.Create(AExeImage: TExeImage; APosition: DWord);
begin
FExeImage := AExeImage;
FExeImage.Read(FHeader, APosition, SizeOf(FHeader));
FName := FHeader.Name;
end;
procedure TExeImageSection.Read(var Buffer);
begin
FExeImage.Read(Buffer, PhysicalOffset, PhysicalSize);
end;
procedure WriteHead(s: String);
var
i: Integer;
begin
WriteLn;
WriteLn(s);
for i:=1 to Length(s) do Write('-');
WriteLn;
end;
procedure Convert(InputFile, OutputFile: String);
var
ExeImage: TExeImage;
KosHeader: TKosHeader;
FileStream: TStream;
ImageBase, ImageSize, Size: DWord;
Buffer: Pointer;
i: Integer;
begin
ExeImage := TExeImage.Create(InputFile);
{$ifdef debug}
WriteHead('NT Header');
WriteLn(Format('Size of Code: %d', [ExeImage.SizeOfCode]));
WriteLn(Format('Size of Init Data: %d', [ExeImage.SizeOfInitializedData]));
WriteLn(Format('Size of UnInit Data: %d', [ExeImage.SizeOfUninitializedData]));
WriteLn(Format('Entry Point: 0x%x', [ExeImage.EntryPoint]));
WriteLn(Format('Image Base: 0x%x', [ExeImage.ImageBase]));
WriteLn(Format('Object Align: %d; File Align: %d', [ExeImage.ObjectAlign, ExeImage.FileAlign]));
WriteLn(Format('Image Size: %d; Header Size: %d', [ExeImage.ImageSize, ExeImage.HeaderSize]));
WriteLn(Format('Stack Reserve Size: %d; Stack Commit Size: %d', [ExeImage.StackReserveSize, ExeImage.StackCommitSize]));
WriteLn(Format('Heap Reserve Size: %d; Heap Comit Size: %d', [ExeImage.HeapReserveSize, ExeImage.HeapCommitSize]));
{$endif}
ImageBase := ExeImage.ImageBase;
ImageSize := 0;
{ <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> }
FileStream := TFileStream.Create(OutputFile, fmCreate);
for i:=0 to ExeImage.Sections.Count-1 do
with ExeImage.Sections[i] do
begin
{$ifdef debug}
WriteHead(Format('Section %s (0x%x)', [Name, ObjectFlags]));
WriteLn(Format('Section RVA/Size: 0x%x / %d', [SectionRVA, VirtualSize]));
WriteLn(Format('Physical Offset/Size: 0x%x / %d', [PhysicalOffset, PhysicalSize]));
{$endif}
Size := ImageBase + SectionRVA;
FileStream.Position := Size;
Inc(Size, VirtualSize);
if Size > ImageSize then ImageSize := Size;
if PhysicalSize > 0 then
begin
GetMem(Buffer, PhysicalSize);
Read(Buffer^);
FileStream.Write(Buffer^, PhysicalSize);
FreeMem(Buffer);
end;
end;
FillByte(KosHeader, SizeOf(KosHeader), 0);
with KosHeader do
begin
sign := KOS_SIGN;
version := 1;
start := ImageBase + ExeImage.EntryPoint;
size := FileStream.Size;
args := ImageSize;
path := args + ARGS_SIZE;
stack := path + PATH_SIZE + ExeImage.StackReserveSize;
memory := stack;
end;
FileStream.Position := 0;
FileStream.Write(KosHeader, SizeOf(KosHeader));
FileStream.Free();
end;
var
InputFile, OutputFile: String;
begin
if ParamCount < 1 then
begin
WriteLn(Format('%s <exe input file> [kos output file]', [ExtractFileName(ParamStr(0))]));
Exit;
end;
InputFile := ParamStr(1);
if ParamCount <2 then
OutputFile := ChangeFileExt(InputFile, '') else
OutputFile := ParamStr(2);
if InputFile = OutputFile then
WriteLn(Format('Cannot convert the file "%s" onto itself.', [InputFile])) else
if not FileExists(InputFile) then
WriteLn(Format('Input the file "%s", not found.', [InputFile])) else
begin
WriteLn(Format('Converting "%s" to "%s"...', [InputFile, OutputFile]));
Convert(InputFile, OutputFile);
end;
end.