RFC rawpipe

Noel Power nopower at suse.com
Mon May 30 10:10:51 UTC 2016

On 30/05/16 09:47, Volker Lendecke wrote:
> On Mon, May 30, 2016 at 10:32:19AM +0200, Andreas Schneider wrote:
>> We already have that. Take a look at spoolssd, spoolss is only available over 
>> named pipes. smbd accepts the named_pipe and redirects all traffic to an 
>> external named pipe interface.
>> make_external_rpc_pipe() creates a named pipe proxy.
> Ok, I was just told on irc that WSP is RPC. Then you are of course
> right. I thought this is not DCERPC, but raw transport.
I am a little confused (too many references to bits of the code I don't
know enough about) however WSP is does *not* use rpc, it uses arbitrary
binary messages transported using SMB Pipe protocol. The purpose of the
little infrastructure I proposed (based my Metze's comments) is just to
provide some simple support of such a raw pipe and allow a service using
a rawpipe to easily integrate a server loop.

WRT to 'make_external_rpc_pipe()' I am pretty sure that is already used
'behind the scenes' e.g. when you specifiy the service pipe by
   rpc_server:$pipename = external

in smb.conf

note: in my implementation I use the external version of the pipe for
WSP, I put in support for internal for completeness.

however the comments about about spools seem to make me think I have
missed something but I don't know, have I?


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