X2Go Bug report logs - #1183
Pass broker creds to RDP client as plaintext

Package: x2goclient; Maintainer for x2goclient is X2Go Developers <x2go-dev@lists.x2go.org>; Source for x2goclient is src:x2goclient.

Reported by: Walid MOGHRABI <w.moghrabi@servicemagic.eu>

Date: Wed, 31 May 2017 14:45:02 UTC

Severity: wishlist

Tags: patch

Full log


Message #15 received at 1183@bugs.x2go.org (full text, mbox, reply):

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Date: Thu, 1 Jun 2017 10:46:55 +0200 (CEST)
From: Walid MOGHRABI <w.moghrabi@servicemagic.eu>
To: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Cc: 1183@bugs.x2go.org
Message-ID: <922067046.11109892.1496306815562.JavaMail.root@servicemagic.eu>
In-Reply-To: <20170531195828.Horde.vAcyRcGCGpIX0L09g1bH-8e@mail.das-netzwerkteam.de>
Subject: Re: [X2Go-Dev] Bug#1183: Pass broker creds to RDP client as
 plaintext
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I'll take your requests into account but just to clarify :


> 1. Please split up the RDP broker creds as session creds from the 
> --close-disconnect change. 

This little fix is related to this support since, in that particular case which is broker mode + RDP session + --close-disconnect activated, you couldn't have a one time authentication (at broker auth).
For that "one time auth" to work, I need a way to pass broker credentials to the session and to close the client at the end of the session in order to force a re-auth at broker login.
Without the --close-disconnect fix, I can pass my credentials to the RDP session but when finishing the session, I'm still on the broker page with my session list and I don't re-auth which is what I wanted.
I can easily split these patches since they are quite clearly separated but I thought they were related to the same need that's why I kept them together.

> 2. Please let the cmdline option start with --broker-... 
>
> --broker-use-creds-for-session 

ok

> 3. Don't limit this functionality to RDP sessions only. It is 
> useful for all sorts of session 
> types (X2Go, DirectRDP, DirectXDMCP if already in (there were 
> rumours about such a new feature)). 

Well, I'm not aware of XDMCP and have nothing under my hand to test it.
This patch affect RDP sessions only in fact because X2Go sessions have heir own way to pass credentials from broker to x2go server with the intermediate key auth so using this method for this kind of session is purely useless.
On the other hand, RDP sessions have no such key authentication available so it is necessary to pass credentials as plaintext to xfreerdp/rdesktop because in the case of the broker mode only, when clicking on the session profile, the client is waiting for the credentials but you are not prompted for them so the client stay stuck in an unusable situation.
So really, this is a "broker + RDP only" method that's why I precised this was for RDP only in order not to confuse users who might think this could be used for any type of connection.

I'll modify the cmdline option name and wait for your comments on my precisions. 

Regards,
Walid Moghrabi

TRAVAUX.COM
BAT I - PARC CEZANNE 2 290 AVENUE GALILEE - CS 80403
13591 AIX EN PROVENCE CEDEX 3

----- Mail original ----- 

De: "Mike Gabriel" <mike.gabriel@das-netzwerkteam.de> 
À: "Walid MOGHRABI" <w.moghrabi@servicemagic.eu>, 1183@bugs.x2go.org 
Envoyé: Mercredi 31 Mai 2017 21:58:28 
Objet: Re: [X2Go-Dev] Bug#1183: Pass broker creds to RDP client as plaintext 

Hi Walid, 

On Mi 31 Mai 2017 16:40:49 CEST, Walid MOGHRABI wrote: 

> package: x2goclient 
> priority: wishlist 
> tags: patch 
> 
> This is a proposal patch in order to let the RDP client use the 
> credentials used at broker auth login so that users can enter them 
> only once in broker mode. 
> 
> This patch also add support for --close-disconnect in broker mode + RDP 

I just looked at your patch. 

Requests before patch can get accepted: 

1. Please split up the RDP broker creds as session creds from the 
--close-disconnect change. 
2. Please let the cmdline option start with --broker-... 

--broker-use-creds-for-session 

3. Don't limit this functionality to RDP sessions only. It is 
useful for all sorts of session 
types (X2Go, DirectRDP, DirectXDMCP if already in (there were 
rumours about such a new feature)). 

Thanks for your work on X2Go, 
Mike 

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