X2Go Bug report logs - #720
Unrecognized arguments when using --broker-krblogin

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Date: Thu, 08 Jan 2015 15:12:38 +0000
Message-ID: <20150108151238.Horde.htV_OpO95AQMwsHYccYEYw3@mail.das-netzwerkteam.de>
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
To: Matthew Richardson <m.richardson@ed.ac.uk>, 720@bugs.x2go.org
Subject: Re: [X2Go-Dev] Bug#720: Unrecognized arguments when using
 --broker-krblogin
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Hi Matthew,

On  Di 06 Jan 2015 18:49:51 CET, Matthew Richardson wrote:

> I am running x2goclient using the following cmd-line options:
>
> x2goclient --debug --broker-krblogin
> --broker-url=ssh://broker.example.com:22/usr/bin/x2gobroker
>
> This returns a suitable session from the broker, but then fails to
> connect, giving an error about invalid arguments:
>
> x2go-DEBUG-../onmainwindow.cpp:2199> Reading 1 session from config file.
> x2go-DEBUG-../onmainwindow.cpp:2803> Starting session via smartcard,
> ssh-agent or kerberos token.
> x2go-DEBUG-../httpbrokerclient.cpp:282> called selectUserSessions
> x2go-DEBUG-../httpbrokerclient.cpp:467> "usage: x2gobroker.orig [-h] [-M
> BROKER_MODE] [-C CONFIG_FILE] [-d] [-i]
>                        [-b BIND_ADDRESS] [-D] [-P PIDFILE] [-L LOGDIR]
>                        [--task BROKER_TASK] [--user USER_NAME]
>                        [--auth-cookie AUTH_ID] [--profile-id PROFILE_ID]
>                        [--backend BROKER_BACKEND]
> x2gobroker.orig: error: unrecognized arguments: echo
> X2GODATAEND:4fc77554-09cf-446a-bd44-1c2abaf8238d
> "
>
> If I run the client without the '--broker-krblogin' option, and
> authenticate to the broker using password or ssh key, this error never
> appears and the connection to the server (from the downloaded session)
> succeeds.
>
> I tried replacing the x2gobroker with a wrapper that calls it via
> strace, and I see the following in the strace output:
>
> execve("/usr/bin/x2gobroker.orig", ["/usr/bin/x2gobroker.orig",
> "--user", "mrichar1", "--authid",
> "f4d2e31c-8438-4cd3-8248-4b35f86e07ff", "--task", "selectsession",
> "--sid", "pool-icewm;", "echo",
> "X2GODATAEND:9c607aa1-a3c3-4c29-a7dc-36847ec8ceb0"], [/* 24 vars */])
>
> I notice that the semi-colon separating the sid value and the subsequent
> command appears inside the sid value quotes, which seems wrong - indeed
> running this as a test gives:
>
> x2gobroker --debug --sid "test;" true
>
> x2gobroker.orig: error: unrecognized arguments: true
>
> Can this quoting be sorted out to allow the use of the --broker-krblogin
> option?


This one's a nasty issue. I will take a look.

Mike


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