X2Go Bug report logs - #611
X2Go Client for Windows cannot create C:\Users\<username>\ssh\known_hosts file when the username has characters from languages other than the system locale

version graph

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

Reported by: <trakatelis@uom.gr>

Date: Mon, 11 Aug 2014 10:55:01 UTC

Severity: normal

Found in version 4.0.2.1

Full log

🔗 View this message in rfc822 format

X-Loop: owner@bugs.x2go.org
Subject: Bug#566: [X2Go-Dev] Bug#566: X2Go Client for Windows 4.0.2.1 cannot create C:\Users\<username>\ssh\known_hosts file when the local Windows account username has non-Ascii characters
Reply-To: "George Trakatelis" <trakatelis@uom.edu.gr>, 566@bugs.x2go.org
Resent-From: "George Trakatelis" <trakatelis@uom.edu.gr>
Resent-To: x2go-dev@lists.x2go.org
Resent-CC: X2Go Developers <x2go-dev@lists.x2go.org>
X-Loop: owner@bugs.x2go.org
Resent-Date: Mon, 15 Sep 2014 05:30:01 +0000
Resent-Message-ID: <handler.566.B566.141075880627962@bugs.x2go.org>
Resent-Sender: owner@bugs.x2go.org
X-X2Go-PR-Message: followup 566
X-X2Go-PR-Package: x2goclient
X-X2Go-PR-Keywords: 
Received: via spool by 566-submit@bugs.x2go.org id=B566.141075880627962
          (code B ref 566); Mon, 15 Sep 2014 05:30:01 +0000
Received: (at 566) by bugs.x2go.org; 15 Sep 2014 05:26:46 +0000
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on
	ymir.das-netzwerkteam.de
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,T_DKIM_INVALID
	autolearn=no version=3.3.2
Received: from mail-wg0-f46.google.com (mail-wg0-f46.google.com [74.125.82.46])
	by ymir.das-netzwerkteam.de (Postfix) with ESMTPS id 2CF5D5DB54
	for <566@bugs.x2go.org>; Mon, 15 Sep 2014 07:26:45 +0200 (CEST)
Received: by mail-wg0-f46.google.com with SMTP id n12so3297285wgh.5
        for <566@bugs.x2go.org>; Sun, 14 Sep 2014 22:26:44 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=uom.edu.gr; s=google;
        h=from:to:cc:references:in-reply-to:subject:date:message-id
         :mime-version:content-type:content-transfer-encoding:thread-index
         :content-language;
        bh=GwA8kb8U7yYec1YJTYXAfCnzwRhG00DnhFGWYGFfthg=;
        b=Yoi4BAqIVJVJsZcAsIahBvqLAq1swZSMjddr1oYnijtB/rUgog/wv1d59kmgQQzF9K
         uYT/evCcdeSP1bX91wzJ+IcT7oNVHAm/sKZW2IYQs/3illhbkCGtgFP4ulX0ozjdIgPx
         UqXTVKg8XGTqvHuny9g/z0uNBZFrVV583WooU=
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
        d=1e100.net; s=20130820;
        h=x-gm-message-state:from:to:cc:references:in-reply-to:subject:date
         :message-id:mime-version:content-type:content-transfer-encoding
         :thread-index:content-language;
        bh=GwA8kb8U7yYec1YJTYXAfCnzwRhG00DnhFGWYGFfthg=;
        b=SHwTbFifGU2XVbzoHDkyfVhHKjtfYr3d7nEWXn89Tg1S6A9/2dPCNeED6OkYDrr42y
         lGzFfnbiEYWcvja6Np/p3eY+B7e5AfP+KO/by43lkduXvQ3P06Owj4q/6v+8WFDAuvf9
         XhHp1b/5hf9zrkIrktkw+aW1p/k1Ia8it+E/BZiRMLTnhTdTuTIQZx7TPcEoci7JAuow
         LF9NGjfD4HgVqarAopUddQVLn8UBr57sLJDuelEbQRUKfg6LSALkDq0wV3k/czz/xmv6
         0fXMoDAPXQd0EOZAvwq6l6pVfAAlhk6LwailO324yr+hIq9ojWwsd6+kQx+0ZomTisyH
         LBLA==
X-Gm-Message-State: ALoCoQkc8wrkYWlZUMbtKGWG6kUb06VqffuPpGlw3fwQAN8dEEqy/rNg7Kgp/IWzNWPQgJdcPf5w
X-Received: by 10.180.20.40 with SMTP id k8mr20732140wie.54.1410758804733;
        Sun, 14 Sep 2014 22:26:44 -0700 (PDT)
Received: from HomePC (46-4-59.adsl.cyta.gr. [46.103.4.59])
        by mx.google.com with ESMTPSA id cy10sm13473117wjb.21.2014.09.14.22.26.43
        for <multiple recipients>
        (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128);
        Sun, 14 Sep 2014 22:26:44 -0700 (PDT)
From: "George Trakatelis" <trakatelis@uom.edu.gr>
To: <566@bugs.x2go.org>
Cc: "'Michael DePaulo'" <mikedep333@gmail.com>
References: <000001cfb552$3193a8a0$94baf9e0$@gr> <handler.566.B.140775428816658.ack@bugs.x2go.org> <000001cfc60a$32831de0$978959a0$@gr> <20140901195103.Horde.HOAd34FDzvE7MwwNBCtaAg1@mail.das-netzwerkteam.de> <CAMKht8gaM7uupVMhTkPR3pg2jcO5sBRHCbYkMV8kCf0EvKK8sg@mail.gmail.com> <CAMKht8jxisag8A9F3yFBSg3BQ+PODLzrayu90S0G8OaQKZXtfQ@mail.gmail.com> <000001cfca83$2b11d830$81358890$@edu.gr> <CAMKht8hMDouAZr0zh0jQ8HhA_COJOfC-d0BKY4u6hTcCDEoQmQ@mail.gmail.com> <20140908085833.Horde.1KVN9LjgQ3GOkz4EX-JZjA1@mail.das-netzwerkteam.de> <CAMKht8jjsK7nK-CyU6OeDMRBgJHx9SC89YQdWLLGL_4+0yVMvA@mail.gmail.com>
In-Reply-To: <CAMKht8jjsK7nK-CyU6OeDMRBgJHx9SC89YQdWLLGL_4+0yVMvA@mail.gmail.com>
Date: Mon, 15 Sep 2014 08:26:40 +0300
Message-ID: <000001cfd0a5$a1fe42d0$e5fac870$@edu.gr>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="utf-8"
Content-Transfer-Encoding: quoted-printable
X-Mailer: Microsoft Office Outlook 12.0
Thread-Index: Ac/MMC6jHzgvB33DQx6TGc5i6muTwgEbj8hw
Content-Language: el

Dear Mike,

I have built libssh 0.6.3 in Visual Studio 2013 (with UNICODE and _UNICODE defined in all projects)
and debugged a tiny test app with function calls analogous to those used in x2goclient.
I'm afraid preprocessor definitions are not enough to make an application/program/library support Unicode.
One could migrate existing programs following a list of guidelines

http://msdn.microsoft.com/en-us/library/cc194801.aspx

For example, a function that fails in libssh (used in ssh_path_expand_tilde(), 
which is always called to replace a ~ with the actual home folder path in a string) is strdup.
To make libssh unicode-friendly strdup has to be replaced by _strdup

http://msdn.microsoft.com/en-us/library/y471khhc.aspx

_strdup would benefit from preprocessor definitions for Unicode support
as it would be converted to the proper Unicode function.

Imho, the only option for now is patch "bug566.test.v2.patch"
as it corrects the problem in the vast majority of Windows installations.
Remember that foreign Windows installations set by default the 
"Language for non-Unicode programs" to that particular foreign language.

-George

-----Original Message-----
From: Michael DePaulo [mailto:mikedep333@gmail.com] 
Sent: Tuesday, September 9, 2014 4:16 PM
To: 566@bugs.x2go.org
Cc: George Trakatelis; Mike Gabriel
Subject: Re: [X2Go-Dev] Bug#566: X2Go Client for Windows 4.0.2.1 cannot create C:\Users\<username>\ssh\known_hosts file when the local Windows account username has non-Ascii characters

[...]

Hi Mike#1 and George,

1.

I believe the best approach is to try to compile libssh with unicode support, and pass unicode values to it. There is no guarantee that a user's username (and home dir path) is in the same language as the language that is set for non-Unicode programs. After all, the "Language for non-Unicode programs" is called the "system locale", it applies to all users on the system.

If we have to for the 4.0.3.0 release of x2goclient, we should fix this bug for the system locale only, and then fix the bug for all languages/locales later.

2.

See bug 474 for George's patch for compiling libssh with MinGW 4.8.2.
It worked :)

3.

I made some progress compiling libssh 0.6.3 with Unicode support.

With MinGW 4.4, when I specified the following values in CMAKE, libssh built successfully, but it did not seem to change anything.
CMAKE_EXE_LINKER_FLAGS:STRING=-municode
CMAKE_MODULE_LINKER_FLAGS:STRING=-municode
CMAKE_SHARED_LINKER_FLAGS:STRING=-municode
CMAKE_STATIC_LINKER_FLAGS:STRING=-municode

With MinGW 4.8.2, when I specify those values, libssh fails to build.
I've attached the output.

This is a positive sign because it implies that MinGW 4.8.2 supports -municode, whereas MinGW 4.4 did not.

I plan to try to resolve this build failure later tonight.

-Mike#2

Send a report that this bug log contains spam.

X2Go Developers <owner@bugs.x2go.org>. Last modified: Sun Nov 24 02:11:24 2024; Machine Name: ymir.das-netzwerkteam.de

X2Go Bug tracking system

Debbugs is free software and licensed under the terms of the GNU Public License version 2. The current version can be obtained from https://bugs.debian.org/debbugs-source/.

Copyright © 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson, 2005-2017 Don Armstrong, and many other contributors.