Как программе удалить саму себя?

Материал из DRKB

Как программе удалить саму себя?[править | править код]

Первый способ:

uses
  Windows, SysUtils;

procedure DeleteMe;
var
  BatchFile: TextFile;
  BatchFileName: string;
  ProcessInfo: TProcessInformation;
  StartUpInfo: TStartupInfo;
begin
  { создаём бат-файл в директории приложения }
  BatchFileName := ExtractFilePath(ParamStr(0)) + '$$336699.bat';

  { открываем и записываем в файл }
  AssignFile(BatchFile, BatchFileName);
  Rewrite(BatchFile);

  Writeln(BatchFile, ':try');
  Writeln(BatchFile, 'del "' + ParamStr(0) + '"');
  Writeln(BatchFile,
    'if exist "' + ParamStr(0) + '"' + ' goto try');
  Writeln(BatchFile, 'del "' + BatchFileName + '"');
  CloseFile(BatchFile);

  FillChar(StartUpInfo, SizeOf(StartUpInfo), $00);
  StartUpInfo.dwFlags := STARTF_USESHOWWINDOW;
  StartUpInfo.wShowWindow := SW_HIDE;

  if CreateProcess(nil, PChar(BatchFileName), nil, nil,
     False, IDLE_PRIORITY_CLASS, nil, nil, StartUpInfo,
     ProcessInfo) then
  begin
    CloseHandle(ProcessInfo.hThread);
    CloseHandle(ProcessInfo.hProcess);
  end;

end;



А вот тот же способ, но немного модифицированный:

program delete2;

uses
  SysUtils,
  windows;

var
  BatchFile: TextFile;
  BatchFileName: string;
  TM: Cardinal;
  TempMem: PChar;

begin
  BatchFileName := ExtractFilePath(ParamStr(0)) + '$$336699.bat';

  AssignFile(BatchFile, BatchFileName);
  Rewrite(BatchFile);

  Writeln(BatchFile, ':try');
  Writeln(BatchFile, 'del "' + ParamStr(0) + '"');
  Writeln(BatchFile, 'if exist "' + ParamStr(0) + '" goto try');
  Writeln(BatchFile, 'del "' + BatchFileName + '"');
  CloseFile(BatchFile);

  TM := 70;
  GetMem(TempMem, TM);
  GetShortPathName(PChar(BatchFileName), TempMem, TM);
  BatchFileName := TempMem;
  FreeMem(TempMem);

  WinExec(PChar(BatchFileName), sw_hide);

  halt;
end.



Второй способ:


procedure DeleteSelf;
var
  module: HModule;
  buf: array[0..MAX_PATH - 1] of char;
  p: ULong;
  hKrnl32: HModule;
  pExitProcess,
  pDeleteFile,
  pFreeLibrary: pointer;
begin
  module := GetModuleHandle(nil);
  GetModuleFileName(module, buf, SizeOf(buf));
  CloseHandle(THandle(4));
  p := ULONG(module) + 1;
  hKrnl32 := GetModuleHandle('kernel32');
  pExitProcess := GetProcAddress(hKrnl32, 'ExitProcess');
  pDeleteFile := GetProcAddress(hKrnl32, 'DeleteFileA');
  pFreeLibrary := GetProcAddress(hKrnl32, 'FreeLibrary');
  asm
    lea eax, buf
    push 0
    push 0
    push eax
    push pExitProcess
    push p
    push pDeleteFile
    push pFreeLibrary
    ret
  end;
end;


Source: Взято из http://forum.sources.ru
ID: 02089