From: Shashank Date <shanko_date@...>
Date: 2004-07-13T23:37:58+09:00
Subject: Re: win32api: how to access NetFileEnum results?

Hi Jos,

--- Jos Backus <jos@catnook.com> wrote:
> I'm trying to programmatically determine any network
> opened files on a Windows 2003 Server system using 
> the NETAPI32.NetFileEnum API.

I cannot claim to have any insight into this API,
but when I ran your code "as is" I got an error:

 undefined local variable or method `bufptr'

so I changed the script slightly 

<snip>

> 
> My code looks like this:
> 
>     require "Win32API"
> 
>     MAX_PREFERRED_LENGTH = -1
>     level = 3
>     entriesread = "\0" * 4
>     totalentries = "\0" * 4
>     resume_handle = "\0" * 4

      bufptr = "\0" * 4  # <<<<< added this assignment
 
>     NetFileEnum = Win32API.new("netapi32",
> "NetFileEnum", 'PPPNPNPPP', 'I')
>     ret =
>
NetFileEnum.call(0,0,0,level,bufptr,MAX_PREFERRED_LENGTH,entriesread,totalentries,resume_handle)
> 
>     if 0 != ret
>       puts "Failed:#{ret}"
>       exit
>     end
> 
>     rbuf = "\0" * 10240 # testing, should be
> *entriesread * sizeof(FILE_INFO_3)
>     memcpy =
> Win32API.new('msvcrt','memcpy','PPL','P')
>     memcpy.call(rbuf,bufptr,rbuf.size)
> 
>     p rbuf
> 

<snip>

and I got a long string stuffed with some binary data.
Of course, like you said, it did not match the output 
of:

C:\>net file
There are no entries in the list.

C:\>

I am not sure if this helps. 
-- shanko

PS> I tried this on Win 2K Professional using 
ruby 1.8.2 (2004-06-04) [i386-mswin32]



		
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