🚀 go-pugleaf

Ed Mulroy wrote:

>I have concerns about doing it that way.  One item is the race condition.

Yep.

>The gross way to have a program delete itself is to create a batch file 

Yes quite gross.

>A variant is to create an executable which delays and then 
>deletes and execute it but antivirus programs may not be happy with this 
>technique.

NAV doesn't complain, but I'm replacing, not patching, the exe with an
update..

A second program that takes an ascii PID can do quite well.

	if( argc > 3 )	/* if launched, wait for launcher to quit */
	{
		ProcessID = atol(argv[3]);
		OldProcess = OpenProcess(PROCESS_QUERY_INFORMATION,
			 FALSE, ProcessID);
		if( OldProcess == NULL )
		{
		   MessageBox( 0, "Did not aquire old process handle",
			 "Failure!",MB_OK|MB_ICONSTOP|MB_TOPMOST);
		    return 9;
		};
		WaitForSingleObject(OldProcess, INFINITE);
		CloseHandle(OldProcess);
		Sleep(4000);	// give Windows more time to release 
		/* delete/update the original exe */
		{ ... }
	};

The origianl exe launches the updater with its ASCII PID as a
parameter. To be generic, I also pass the original exe name, and the
name of the replacement file.