Re: [ros-dev] Retrieving the computer name of a named pipe client

[Timo Kreuzer]

You need to send an FSCTL to the named pipe file system driver.

// defined in ntifs.h
#define FSCTL_PIPE_GET_CONNECTION_ATTRIBUTE 
CTL_CODE(FILE_DEVICE_NAMED_PIPE, 12, METHOD_BUFFERED, FILE_ANY_ACCESS)

     static const char AttributeName[] = "ClientComputerName";

     Status = NtFsControlFile(NamedPipeHandle,
                              EventHandle,
                              NULL,
                              NULL,
                              &IoStatusBlock,
FSCTL_PIPE_GET_CONNECTION_ATTRIBUTE,
                              (PVOID)AttributeName,
                              sizeof(AttributeName),
                              NameBuffer,
                              NameBufferLength);

Obviously this has to be implemented in ournpfs as well. :)

Regards,
Timo


Am 10.10.2016 um 13:21 schrieb Colin Finck:
>   Hi all,
>
>  For implementing the RpcBindingServerFromClient rpcrt4.dll API  function
>  needed by my Printing Stack, I need to know how to retrieve the computer
>  name of a named pipe client.
>  Vista and later implement GetNamedPipeClientComputerName in kernel32.dll
>  which does exactly this, but this is neither supported under Windows
>  Server 2003 nor implemented in ReactOS and WINE.
>
>  Determining client information is a basic feature of network
>  communication, so it should be possible under Windows 2003 as well.
>  Additionally, RpcBindingServerFromClient returns the proper computer
>  name of the client, when using named pipes over the ncacn_np transport.
>  It must have got it somehow.
>
>  Hoping for some ideas from your side!
>
>
>  Colin
>
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