배치 파일로 자기 파일 지우기(Writing a self destructing exe file)

Writing a self destructing exe file Writing a self destructing exe file - CodeProject.mht

Please Sign up or sign in to vote. Explains how you can have a program delete itself once it has finished running without a reboot Introduction Uninstall programs typically want to delete themselves at the end of the un-installation, but executable cannot delete itself by simply calling the DeleteFile function. By calling the Selfdestruct() function showed below before program exit, the calling executable will be destroyed as soon as possible. The method shown in this article works on all Win32 platforms and there is no need to reboot. Using the code Just call the Selfdestruct() function before program exit. Hide   Shrink   Copy Code // this is the name of the temporary .bat file static const char tempbatname[] = "_uninsep.bat" ; void Selfdestruct() { // temporary .bat file static char templ[] = ":Repeat\r\n" "del \"%s\"\r\n" "if exist \"%s\" goto Repeat\r\n" "rmdir \"%s\"\r\n" "del \"%s\"" ; char modulename[_MAX_PATH] ; // absolute path of calling .exe file char temppath[_MAX_PATH] ; // absolute path of temporary .bat file char folder[_MAX_PATH] ; GetTempPath(_MAX_PATH, temppath) ; strcat(temppath, tempbatname) ; GetModuleFileName(NULL, modulename, MAX_PATH) ; strcpy (folder, modulename) ; char *pb = strrchr(folder, '\\'); if (pb != NULL) *pb = 0 ; HANDLE hf ; hf = CreateFile(temppath, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL) ; if (hf != INVALID_HANDLE_VALUE) { DWORD len ; char *bat ; bat = (char*)alloca(strlen(templ) + strlen(modulename) * 2 + strlen(temppath) + 20) ; wsprintf(bat, templ, modulename, modulename, folder, temppath) ; WriteFile(hf, bat, strlen(bat), &len, NULL) ; CloseHandle(hf) ; ShellExecute(NULL, "open", temppath, NULL, NULL, SW_HIDE); } } How it works Let's assume the executable that wants to destroy itself is located in c:\myfolder\selfdestruct.exe. The Selfdestruct() function will create following .bat in the computers temp folder and then launches it: Hide   Copy Code :Repeat del "c:\myfolder\selfdestruct.exe" if exist "c:\myfolder\selfdestruct.exe" goto Repeat rmdir "c:\myfolder" del "c:\temp\_uninsep.bat" ; The .bat file will try to delete the c:\myfolder\selfdestruct.exe over and over until it finally succeeds (that is as soon as selfdestruct.exe has finished execution. Then it tries to remove the containing folder (here c:\myfolder) which will work only if it is empty and finally deletes itself. Fortunately .bat files can delete themselves. License This article, along with any associated source code and files, is licensed under A Public Domain dedication