X2Go Bug report logs - #780
SSH Auth Agent authentication doesn't work with x2gobroker when no username is specified on the command line

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

Reported by: Stefan Baur <X2Go-ML-1@baur-itcs.de>

Date: Tue, 3 Feb 2015 15:40:02 UTC

Severity: normal

Found in version 4.0.3.2-2015.02.01-4750158

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Report forwarded to x2go-dev@lists.x2go.org, X2Go Developers <x2go-dev@lists.x2go.org>:
Bug#780; Package x2goclient. (Tue, 03 Feb 2015 15:40:02 GMT) Full text and rfc822 format available.

Acknowledgement sent to Stefan Baur <X2Go-ML-1@baur-itcs.de>:
New Bug report received and forwarded. Copy sent to X2Go Developers <x2go-dev@lists.x2go.org>. (Tue, 03 Feb 2015 15:40:02 GMT) Full text and rfc822 format available.

Message #5 received at submit@bugs.x2go.org (full text, mbox):

From: Stefan Baur <X2Go-ML-1@baur-itcs.de>
To: submit@bugs.x2go.org
Subject: SSH Auth Agent authentication doesn't work with x2gobroker when no username is specified on the command line
Date: Tue, 03 Feb 2015 16:36:39 +0100
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Package: x2goclient
Version: 4.0.3.2-2015.02.01-4750158

(also present in 4.0.3.1)

When running x2goclient.exe on Windows (haven't tested Linux/OS X,
issue may be present there as well), using

- --broker-url=ssh://server:22/usr/bin/x2gobroker --broker-autologin

(the sequence of parameters doesn't matter), x2goclient goes into an
endless loop alternating between a password prompt for a
(non-existent) keyfile, and the message

Access denied. Authentication that can continue: publickey,password
Access denied. Authentication that can continue: publickey,password

(yes, it is printed twice).

This is even though a keyfile is loaded into Pageant (PuTTY's SSH Auth
Agent), and console login into the server using PuTTY works.

If

- --broker-url=ssh://user@server:22/usr/bin/x2gobroker --broker-autologin

is specified, it works.

IMO, this is a bug.  If no user name is specified on the command line,
x2goclient.exe should prompt for the user name, just like it does when
running in non-broker mode, or when running in username-and-password mode.

- -Stefan

- -- 
BAUR-ITCS UG (haftungsbeschränkt)
Geschäftsführer: Stefan Baur
Eichenäckerweg 10, 89081 Ulm | Registergericht Ulm, HRB 724364
Fon/Fax 0731 40 34 66-36/-35 | USt-IdNr.: DE268653243
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