Archive for the ‘JEDI Windows Security Code Lib’ Category

Setting Folder Security

This article describes some ways how to set the security on a folder using JWSCL. Usually, we want to add some rights for a particular user to a folder so she gets access. I can say that is a heck of work to do with WinAPI. But still with JWSCL we need to consider some [...]

A long time ago I wrote an article about this strange WinAPI function called GetEffectiveRightsFromAcl. There was a problem that I showed how to solve (see my article and the comment in the MSDN doc). However, this function has never been a good way for retrieving the possible access mask. It seems that MS has [...]

This article is about how to retrieve the owner of a file. If you are experienced with some of the WinAPI security function this can be pretty easy. There are some problems that needs to be addressed though. The first one is the size of the security items like the SID name of the owner. [...]

JWSCL and FreeAndNil

There is a lot of talking about the usage of FreeAndNil in destructors. I’ve never thought about it before so I used it quite often even in destructors. Although I don’t use it as a universal remedy function, it still seems to be a bad design: a thought shared by many leading Delphi experts.  Thus [...]


I had some trouble with this rather complicated COM structure called ACTRL_ACCESS. So I post a diagram to show its design. Otherwise it would be a pity to leave it on my private hard drive.

I just commited (revision 843) a little bugfix that existed since revision 833. In TJwWTSSession.Create LocalFree was called (after StrConnect) without LocalAlloc. Since utildll.dll handles the memory allocation is it not needed at all. [Update] The fix is currently only available in the developer version repository (aka trunk) of Subversion.

I have just commited an updated version of my Terminal Server unit (revision 842) into SVN. I have done some tests on Windows 7 (a fix for Windows 7 was done in Jwa revision 830 btw) and all seems to work well. Internally the Connect method of TJwTerminalServer verifies the connection to Terminal Server by [...]

I have updated JWSCL Version 0.9.2a to support Windows 7. Version 0.9.3 supports Windows 7 from the beginning but since many people use 0.9.2a, I have decided to merge Windows 7 support.

Some time ago, I was in the situation to set up a new computer with a Windows XP 64 CD. Well it doesn’t matter that it was 64bit.  However, I always create a separate partitions for Windows XP. And because user profiles tend to get big, I moved a new user to a second partition. [...]

Recently, I’ve found a bug in JWSCL. It happened that the function GetInheritanceSourceW didn’t work for me anymore. A long time ago I used this function for the last time and now again. However the strange thing was that the function returned no error but it didn’t fill a result array with expected inheritance data. [...]

Paypal donation (EUR)



September 2017
« Oct