X2Go Bug report logs - #397
Cannot connect when user home folder contains a non-ascii character

Toggle useless messages

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

From: Néstor Uribe-Patarroyo <uribepnr@gmail.com>

To: submit@bugs.x2go.org

Subject: Cannot connect when user home folder contains a non-ascii character

Date: Wed, 08 Jan 2014 12:05:00 -0500

Package: x2go-server
Version: 4.0.1.12-0~809~ubuntu12.04.1

When the home folder of a user contains a non-ascii character (such as 
"á", or "é") I cannot initiate an x2go session. The error is:

Info: Connecting to remote host 'localhost:31004'.
Info: Connection to remote proxy 'localhost:31004' established.
Error: The remote NX proxy closed the connection.
Error: Failure negotiating the session in stage '7'.
Error: Wrong version or invalid session authentication cookie.
Session: Terminating session at 'Wed Jan 8 09:52:30 2014'.
Session: Session terminated at 'Wed Jan 8 09:52:30 2014'.

Login with ssh works normally.

After changing the home folder of the user to one with only ascii 
characters, initiating an x2go session was possible.

I am using Ubuntu 12.04.3 in the server, Ubuntu 12.10 in the client. 
Client version is 4.0.1.2.Both server and client installed from thePPA 
ppa:x2go/stable

Message #10 received at 397@bugs.x2go.org (full text, mbox, reply):

From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

To: Néstor Uribe-Patarroyo <uribepnr@gmail.com>, 397@bugs.x2go.org

Subject: Re: Bug#397: Cannot connect when user home folder contains a non-ascii character

Date: Thu, 09 Jan 2014 08:34:32 +0000

[Message part 1 (text/plain, inline)]

Control: reassign -1 x2goserver
Control: found -1 4.0.1.12
Control: tag -1 moreinfo

Dear Néstor,

On  Mi 08 Jan 2014 18:05:00 CET, Néstor Uribe-Patarroyo wrote:

> Package: x2go-server
> Version: 4.0.1.12-0~809~ubuntu12.04.1
>
> When the home folder of a user contains a non-ascii character (such  
> as "á", or "é") I cannot initiate an x2go session. The error is:
>
> Info: Connecting to remote host 'localhost:31004'.
> Info: Connection to remote proxy 'localhost:31004' established.
> Error: The remote NX proxy closed the connection.
> Error: Failure negotiating the session in stage '7'.
> Error: Wrong version or invalid session authentication cookie.
> Session: Terminating session at 'Wed Jan 8 09:52:30 2014'.
> Session: Session terminated at 'Wed Jan 8 09:52:30 2014'.
>
> Login with ssh works normally.
>
> After changing the home folder of the user to one with only ascii  
> characters, initiating an x2go session was possible.
>
> I am using Ubuntu 12.04.3 in the server, Ubuntu 12.10 in the client.  
> Client version is 4.0.1.2.Both server and client installed from  
> thePPA ppa:x2go/stable

Thanks for filing this bug and testing X2Go.

Please note that Posix usernames are not allowed by RFC to contain  
accents on characters. Posix usernames should be ASCII only.

Normally, the home directory's basename should be identical to the  
username, thus also contain ASCII-only characters.

I don't think we will provide a fix for the reported bug, as your  
system does not seem to comply to Posix standards.

If you think I am wrong about this, please give feedback.

Thanks,
Mike
-- 

DAS-NETZWERKTEAM
mike gabriel, herweg 7, 24357 fleckeby
fon: +49 (1520) 1976 148

GnuPG Key ID 0x25771B31
mail: mike.gabriel@das-netzwerkteam.de, http://das-netzwerkteam.de

freeBusy:
https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.xfb

[Message part 2 (application/pgp-signature, inline)]

Message #23 received at 397@bugs.x2go.org (full text, mbox, reply):

From: Stefan Baur <newsgroups.mail2@stefanbaur.de>

To: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>, 397@bugs.x2go.org, x2go-dev@lists.berlios.de

Cc: Néstor Uribe-Patarroyo <uribepnr@gmail.com>

Subject: Re: [X2Go-Dev] Bug#397: Cannot connect when user home folder contains a non-ascii character

Date: Fri, 10 Jan 2014 12:34:02 +0100

Am 09.01.2014 09:34, schrieb Mike Gabriel:

> I don't think we will provide a fix for the reported bug, as your system
> does not seem to comply to Posix standards.
>
> If you think I am wrong about this, please give feedback.

I agree that we shouldn't try to fix what obviously isn't broken on our 
side, however, we could try to check for the issue and provide a clear 
error message as to what is wrong.

I don't know what programming language the particular part of x2goserver 
is written in, but I would hope that something like this is possible in 
it (pseudocode):

StrippedUsername = strip_non_ascii(Username)
if StrippedUsername != Username {
	report_error('Username does not conform to POSIX conventions.')
	exit
}

-Stefan

Message #28 received at 397@bugs.x2go.org (full text, mbox, reply):

From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

To: 397-submitter@bugs.x2go.org

Cc: control@bugs.x2go.org, 397@bugs.x2go.org

Subject: X2Go issue (in src:x2goserver) has been marked as pending for release

Date: Wed, 20 Aug 2014 10:55:15 +0200 (CEST)

tag #397 pending
fixed #397 4.0.1.16
thanks

Hello,

X2Go issue #397 (src:x2goserver) reported by you has been
fixed in X2Go Git. You can see the changelog below, and you can
check the diff of the fix at:

    http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=a2e9b6d

The issue will most likely be fixed in src:x2goserver (4.0.1.16).

light+love
X2Go Git Admin (on behalf of the sender of this mail)

---
commit a2e9b6dbea53d598f007b5550cde6937ab6907dd
Author: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date:   Wed Aug 20 10:55:04 2014 +0200

    Abort session if env var $HOME is not set or if $HOME contains non-ASCII characters. (Fixes: #397).

diff --git a/debian/changelog b/debian/changelog
index ea150c3..fdf038c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -69,6 +69,8 @@ x2goserver (4.0.1.16-0x2go1) UNRELEASED; urgency=low
       (Fixes: #558).
     - Allow length of username up to 48 characters (was: 32 characters). (Fixes:
       #574).
+    - Abort session if env var $HOME is not set or if $HOME contains non-ASCII
+      characters. (Fixes: #397).
   * debian/control, x2goserver.spec:
     + Update versioned D: x2goagent (>= 3.5.0.25). This assures that X2Go
       works with poly-instantiated /tmp directories.

Message #40 received at 397@bugs.x2go.org (full text, mbox, reply):

From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>

To: 397-submitter@bugs.x2go.org

Cc: control@bugs.x2go.org, 397@bugs.x2go.org

Subject: X2Go issue (in src:x2goserver) has been marked as closed

Date: Fri, 26 Sep 2014 00:42:08 +0200 (CEST)

close #397
thanks

Hello,

we are very hopeful that X2Go issue #397 reported by you
has been resolved in the new release (4.0.1.16) of the
X2Go source project »src:x2goserver«.

You can view the complete changelog entry of src:x2goserver (4.0.1.16)
below, and you can use the following link to view all the code changes
between this and the last release of src:x2goserver.

    http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=c43b862f2ae0e8980fb7ab5e519d692b07da5a45;hp=98c4f84d83d701823b7887f79d0d9f5ce8233bd4

If you feel that the issue has not been resolved satisfyingly, feel
free to reopen this bug report or submit a follow-up report with
further observations described based on the new released version
of src:x2goserver.

Thanks a lot for contributing to X2Go!!!

light+love
X2Go Git Admin (on behalf of the sender of this mail)

---
X2Go Component: src:x2goserver
Version: 4.0.1.16-0x2go1
Status: RELEASE
Date: Fri, 26 Sep 2014 00:36:32 +0200
Fixes: 122 302 397 406 407 458 468 495 506 511 520 523 524 543 547 558 569 572 573 574 599 605 606 617 619
Changes: 
 x2goserver (4.0.1.16-0x2go1) RELEASED; urgency=low
 .
   [ Mike DePaulo ]
   * New upstream release (4.0.1.16):
     - Make X2Go Server aware of the Openbox desktop environment
       (Command: OPENBOX) (Fixes: #605)
     - Make X2Go Server aware of the IceWM desktop environment
       (Command: ICEWM) (Fixes: #606)
     - Support GNOME Flashback session (GNOME 3.8+) on distro releases such as
       Ubuntu 13.10+ and debian Jessie
       (NOTE: For most users, GNOME Flashback currently will not work.
        This requires that gnome-flashback.session actually be installed. Not
        every Linux distro has it available.
        It also requires that the gnome-session binary not require
        hardware 3D acceleration for said session. Currently, upstream GNOME
        and GNOME 3.8+ in all Linux distros do require this, only 3rd party
        builds do not. See X2Go bug #599 for example.)
       (Thanks Eugene San (eugenesan@gmail.com))
     - Fix launching GNOME 3 Fallback session (GNOME 3.4 & 3.6) on distros other
       than Ubuntu and Debian (Fixes: #599)
     - Fix support for Cinnamon 1.4 (Linux Mint 13) (Fixes: #569)
     - Fix the logic for launching Cinnamon 2.0 and 2.2 (Linux Mint 17).
       (Fixes: #572)
       NOTE: Fixing this bug in x2goserver is not sufficient to make Cinnamon 2.0
       & 2.2 to work properly with X2Go. Bug #150 in nx-libs is still a problem.
       Fixing this bug enables Cinnamon 2.0 and 2.2 to launch to their
       "fallback mode", which has many bugs and missing features when compared to
       "software rendering" mode (cinnamon2d), but is still better than nothing.
   * debian/rules:
     + Improve dh_auto_clean override.
 .
   [ Mike Gabriel ]
   * New upstream version (4.0.1.16):
     - Let x2goversion exit with an error if the X2Go component cannot be
       found.
     - Detect terminated sessions from NX log file. Also interpret a session as
       terminated if terminating just has started.
     - Detect started/starting/resumed/resuming sessions by explicitly scanning
       the NX session log file for those keywords.
     - Interpret NX sessions marked as "aborting session" as (not yet) terminated
       sessions.
     - Provide config option for server-side/global clipboard behaviour in
       x2goagent.options. (Fixes: #506).
     - Be aware of poly-instantiated /tmp directories bind-mounted under
       /tmp-inst. (Fixes: #406).
     - On suspend: Call x2goumount-session before sending SIGHUP to x2goagent.
     - Refuse client communcation if server-side hostname is not set up
       correctly (Fixes: #468).
     - Fix string comparison in x2goumount-session.
     - Fix problems with unmounting shared folders on session suspension/
       termination. Remove extra parentheses from the fusermount execution
       call. (Fixes: #407).
     - Use type -p instead of which in x2goumount-session. Suppress output
       to stdout properly.
     - Use if--then--else--fi during x2goagent resuming in x2goresume-session
       script.
     - More reliably sync the NX session state with the status information in
       the X2Go session DB.
     - x2golistdesktops: Also detect sharable desktop sessions behind abstract
       kernel namespace sockets.
     - Add logcheck rules for X2Go Server. Thanks to Frank Werner for sending
       them in.
     - Correctly use diversions from stderr to stdout in shell commands.
       (Fixes: #520).
     - Don't die if no session state file is found, as it will break X2Go
       completely after upgrading from versions << 4.0.1.16 if sessions
       are still running/suspended during package upgrade.
     - Provide support for client-side choice of clipboard security. (Fixes:
       #524).
     - Use more quotes in x2goruncommand.
     - Detect the exit of rootless applications that forked to background on
       application execution. (Fixes: #122).
     - Make x2goruncommand more robust.
     - Don't fail Xsession startup if any of the profile scripts returns
       with an error.
     - Silently timeout in x2golistdesktops if calls to x2golistsessions and/or
       xwininfo don't produce output within one second. (Fixes: #543).
     - Allow email addresses as login usernames. (Fixes: #573).
     - Abort session startup if env var $USER or $SSH_CLIENT are not set.
       (Fixes: #558).
     - Allow length of username up to 48 characters (was: 32 characters). (Fixes:
       #574).
     - Abort session if env var $HOME is not set or if $HOME contains non-ASCII
       characters. (Fixes: #397).
     - Export XAUTHORITY env var in x2goruncommand to enable privilege upgrade
       for applications started via pkexec. (Fixes: #458).
     - x2gocleansessions: Don't print to stderr if the session state file cannot
       be found. This can happen during session startups. Report to system log
       instead.
     - Don't use Perl package File::ReadBackwards anymore.
     - Fix x2gormforward for 4.0.1.x release series (the X2Go::Log Perl module
       only exists in X2Go Server >= 4.1.0.0, the 4.0.1.x release series has to
       use x2gologlevel.pm in `x2gopath lib`. (Fixes: #617).
     - Pick x2gogetagentstate from 4.1.0.0 release series and adapt to usage
       with X2Go Server 4.0.1.x. (Fixes: #619).
   * debian/control, x2goserver.spec:
     + Update versioned D: x2goagent (>= 3.5.0.25). This assures that X2Go
       works with poly-instantiated /tmp directories.
     + Make sure x2gogetagentstate gets packaged in bin:package x2goserver.
     + Bump Standards: to 3.9.5. No changes needed.
     + Mark x2goserver-pyhoca bin:package as deprecated.
     + Drop D (x2goserver): libfile-readbackwards-perl.
   * x2goserver.spec:
     + Install {libdir}/x2go/x2gormforward into bin:package x2goserver.
     + Drop R (x2goserver): perl(File::ReadBackwards).
 .
   [ Oleksandr Shneyder ]
   * New upstream version (4.0.1.16):
     - x2gostartagent, x2golistsession, x2gosuspend-session and
       x2goresume-session getting agent state from ~/.x2go/C-$SID/state. This
       should help to avoid session damage. Remove nxcleanup. (Fixes: #302,
       #511).
     - Move session file to /tmp/.x2go-$USER. (Fixes: #523).
     - Fix x2gostartagent failures if kbd is not "auto". Remove comma at end of
       options file.
     - Set default value for clipboard to "both" in x2gostartagent and
       x2goresume-session.
     - Clean user SSHD process if connection between server and client lost.
       This should fix error "Global request tcpip-forward failed". (Fixes:
       #495, #547).
 .
   [ Orion Paplowski ]
   * x2goserver.spec:
     + Sync Fedora .spec file with our upstream-provided x2goserver.spec.

Send a report that this bug log contains spam.