A program which can delete itself
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Many years ago, Jeffrey Richter wrote a program to show how to delete a program itself when it was closed. It sounds very funny, and I tried this program yesterday. I saidly found that the program does deleted but the temp file still exist. It seems that FILE_FLAG_DELETE_ON_CLOSE flag doesn't work on a exe file. Here is the source code.Any one knowns why the temp file doesn't get deleted? :sigh:
int WINAPI _tWinMain(HINSTANCE h, HINSTANCE b, LPTSTR psz, int n) { // Is this the Original EXE or the clone EXE? // If the command-line 1 argument, this is the Original EXE // If the command-line >1 argument, this is the clone EXE if (__argc == 1) { // Original EXE: Spawn clone EXE to delete this EXE // Copy this EXEcutable image into the user''s temp directory TCHAR szPathOrig[_MAX_PATH], szPathClone[_MAX_PATH]; GetModuleFileName(NULL, szPathOrig, _MAX_PATH); GetTempPath(_MAX_PATH, szPathClone); GetTempFileName(szPathClone, __TEXT("Del"), 0, szPathClone); CopyFile(szPathOrig, szPathClone, FALSE); // Open the clone EXE using FILE_FLAG_DELETE_ON_CLOSE HANDLE hfile = CreateFile(szPathClone, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE, NULL); // Spawn the clone EXE passing it our EXE''s process handle // and the full path name to the Original EXE file. TCHAR szCmdLine[512]; HANDLE hProcessOrig = OpenProcess(SYNCHRONIZE, TRUE, GetCurrentProcessId()); wsprintf(szCmdLine, __TEXT("%s %d \"%s\""), szPathClone, hProcessOrig, szPathOrig); STARTUPINFO si; ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); PROCESS_INFORMATION pi; CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi); CloseHandle(hProcessOrig); CloseHandle(hfile); // This original process can now terminate. } else { // Clone EXE: When original EXE terminates, delete it HANDLE hProcessOrig = (HANDLE) _ttoi(__targv[1]); WaitForSingleObject(hProcessOrig, INFINITE); CloseHandle(hProcessOrig); DeleteFile(__targv[2]); // Insert code here to remove the subdirectory too (if desired). // The system will delete the clone EXE automatically // because it was opened with FILE_FLAG_DELETE_ON_CLOSE } return(0); }A Chinese VC++ programmer
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Many years ago, Jeffrey Richter wrote a program to show how to delete a program itself when it was closed. It sounds very funny, and I tried this program yesterday. I saidly found that the program does deleted but the temp file still exist. It seems that FILE_FLAG_DELETE_ON_CLOSE flag doesn't work on a exe file. Here is the source code.Any one knowns why the temp file doesn't get deleted? :sigh:
int WINAPI _tWinMain(HINSTANCE h, HINSTANCE b, LPTSTR psz, int n) { // Is this the Original EXE or the clone EXE? // If the command-line 1 argument, this is the Original EXE // If the command-line >1 argument, this is the clone EXE if (__argc == 1) { // Original EXE: Spawn clone EXE to delete this EXE // Copy this EXEcutable image into the user''s temp directory TCHAR szPathOrig[_MAX_PATH], szPathClone[_MAX_PATH]; GetModuleFileName(NULL, szPathOrig, _MAX_PATH); GetTempPath(_MAX_PATH, szPathClone); GetTempFileName(szPathClone, __TEXT("Del"), 0, szPathClone); CopyFile(szPathOrig, szPathClone, FALSE); // Open the clone EXE using FILE_FLAG_DELETE_ON_CLOSE HANDLE hfile = CreateFile(szPathClone, 0, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_DELETE_ON_CLOSE, NULL); // Spawn the clone EXE passing it our EXE''s process handle // and the full path name to the Original EXE file. TCHAR szCmdLine[512]; HANDLE hProcessOrig = OpenProcess(SYNCHRONIZE, TRUE, GetCurrentProcessId()); wsprintf(szCmdLine, __TEXT("%s %d \"%s\""), szPathClone, hProcessOrig, szPathOrig); STARTUPINFO si; ZeroMemory(&si, sizeof(si)); si.cb = sizeof(si); PROCESS_INFORMATION pi; CreateProcess(NULL, szCmdLine, NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi); CloseHandle(hProcessOrig); CloseHandle(hfile); // This original process can now terminate. } else { // Clone EXE: When original EXE terminates, delete it HANDLE hProcessOrig = (HANDLE) _ttoi(__targv[1]); WaitForSingleObject(hProcessOrig, INFINITE); CloseHandle(hProcessOrig); DeleteFile(__targv[2]); // Insert code here to remove the subdirectory too (if desired). // The system will delete the clone EXE automatically // because it was opened with FILE_FLAG_DELETE_ON_CLOSE } return(0); }A Chinese VC++ programmer
I didnt try to it but maybe you can run a batch file and on that file write for delete your file and itself when you want to close your program.
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I didnt try to it but maybe you can run a batch file and on that file write for delete your file and itself when you want to close your program.
Thank you! :) What you said is one of the many ways to delete a program itself.
A Chinese VC++ programmer
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Thank you! :) What you said is one of the many ways to delete a program itself.
A Chinese VC++ programmer
You're welcome. :)