which HOOK is called when a directory or a file (say hook.txt ) is opened ?

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1.00/5 (2 votes)

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C++

C#

hooking

someone please tell me the answer ?

Posted 27-Aug-14 2:07am

keyur chauhan

Updated 27-Aug-14 2:21am

Richard MacCutchan

v4

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Richard MacCutchan 27-Aug-14 8:22am

Which is it, C++ or C#? In either case a bit of Googling or a search of MSDN would probably help you.

keyur chauhan 27-Aug-14 8:32am

@Richard MacCutchan , its c++ , i googled a lot ,i am able to detect windows created by applications such as internet explorer , google chrome , visual studio using CBT hook , but cant detect windows created by notepad or directory windows

Sergey Alexandrovich Kryukov 27-Aug-14 12:10pm

There is no such concept as "open directory"; only the file can be open.
—SA

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Dave Kreskowiak · Answer 1 · 2014-08-27T02:29:00

Solution 1

None. No such "hook" exists.

Opening a file in an application is not some mystical thing. It happens all the time, system wide, not just when you double-click something.

Posted 27-Aug-14 2:29am

Dave Kreskowiak

Updated 27-Aug-14 2:31am

v2

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keyur chauhan 27-Aug-14 8:36am

is there any other way ??

Sergey Alexandrovich Kryukov 27-Aug-14 12:11pm

Why?
—SA

Dave Kreskowiak 27-Aug-14 15:00pm

What are you doing that you think you need to "hook" a file being opened??

keyur chauhan 28-Aug-14 1:28am

@Dave Kreskowiak , i want to protect the file using the password , so that only those who know the password can open it.

Dave Kreskowiak 28-Aug-14 8:37am

No, you're not. This is FAR more complicated to do than you realize.

First, what would happen if backup software or a virus scanner tried to open the file and nobody was logged in to type in the password?

Second, this needs to be written in C, not C# or VB.NET. NTFS extensions and Windows drivers are best written in C, not C# or VB.NET.

Third, how are you going to set passwords for each file? Where are you going to store them? How do you handle setting passwords on multiple files at one time? How are you going to handle recovering the files from lost passwords? ...? ...? ...?

This is not some simple little tool some newbie can whip up and expect to work. There's a reason you don't see this little application all over the web. It's very difficult to implement and offers no benefits at all beyond what NTFS security already offers.

**Zoltán Zörgő** · Answer 2 · 2014-08-27T02:50:00

Solution 2

In your question you speak about "hooking" on opening files, but afterwards you speak about detecting windows. These are different things..
Well, you might not be able to detect all events, if they are transient, but might be one approach periodically walking trough open file handles, see for example: Listing Used Files[^]

Posted 27-Aug-14 2:50am

Zoltán Zörgő

Comments

Sergey Alexandrovich Kryukov 27-Aug-14 12:14pm

This interesting article, could be very useful, my 5. However, I'm not sure if it can help OP, who may not understand what he needs; mentioning non-existing "concept" of "opening a directory" clearly tells a tale.
—SA