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Re: [X2Go-Dev] Fwd: MAC developers wanted
by Mihai Moldovan 23 Feb '12

23 Feb '12

Hi Stefan thanks - I've seen your message via the webfrontend earlier and thus decided to sign up. However, CCing me would have been a good idea, yes. I am flattered, but unfortunately not skilled enough to help you. The fix I send originated from a hour-long debugging session with two other people (non-OS X developers) - I am pretty sure I would have never caught such a stack overflow by myself. (Actually, I tried debugging via gdb at first and noticed the this pointer changed when going into the newly called channelLoop function, causing the program to crash - but was more than startled because this should have never had happened. Turns out, the stack was full and the first parameter of the function, i.e., "this" could not be pushed onto it, thus reading some random memory.) At the same time, I am happy to say that otherwise the x2go client (from git) is fully functioning on OS X with one little flaw - I have to test the same git version on Linux as well to confirm a OS X specific bug though. Oh yeah, and building nxproxy on OS X is not trivial but easily manageable with a few build system modifications. Best regards, Mihai > Am 18.02.2012 04:57, schrieb Mihai Moldovan: >> Raise the stack space to 2MB for secondary threads. It previously used >> the 512KB system default. >> >> Signed-off-by: Mihai Moldovan<ionic(a)ionic.de> >> > <snip> > > Mihai, since you committed an OS X-specific patch: Would you be > interested in picking up development of the OS X X2Go-Client? > Originally, Mike wanted to take a stab at it, but didn't get around to > do it, and Alex won't touch the OS X port unless he gets paid for it. > > If you have the necessary skills and the time to keep the OS X port > current, I could provide you with a Mac mini for testing. > See > http://comments.gmane.org/gmane.linux.terminal-server.x2go.devel/2112 > and > http://comments.gmane.org/gmane.linux.terminal-server.x2go.devel/2347 > for the specs& background info. > > I bought this Mac specifically so someone skilled enough can work on the > X2Go-Client, and it's kind of sad that no one wants to pick up > development even though hardware is provided for free/in exchange for a > deposit. > > I don't have enough Mac users among my clients that paying Alex (or > anyone else) to work on it would be economically viable... > > -Stefan

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X2Go release day: nx-libs, x2goserver, x2goclient, x2gognomebindings, x2golxdebindings, x2godesktopsharing
by Mike Gabriel 22 Feb '12

22 Feb '12

Dear all, The X2Go Project it proud to announce a couple of new X2Go component releases: - x2goserver (3.1.0.0) - x2goclient (3.99.1.0) - nx-libs incl. x2goagent (3.5.0.11) - x2gognomebindings (2.0.1.4) - x2golxdebindings (1.0.1.2) - x2godesktopsharing (3.0.1.4) All new packages will be available in our stable repositories (Debian, Ubuntu) within the next 24h. The windows version of x2goclient will probably be available today, as well. With X2Go Server and X2Go Client we introduce a slightly changed session handshake when resuming an already running session. Older clients will be fully compatible with newer servers (and vice versa). The fix addresses a session resume failure that occurred every once in a while (quite rare, but annoying). For the code change please refer to the commits in X2Go Git addressing this: X2Go Server... http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=63556d25c3a86f1… X2Go Client... http://code.x2go.org/gitweb?p=x2goclient.git;a=commitdiff;h=3f4eab56698f439… Python X2Go... (though not released today, still mentioned here) http://code.x2go.org/gitweb?p=python-x2go.git;a=commitdiff;h=37cbc1fa5f7787… People upgrading x2goserver and running PostgreSQL as session database backend, make sure to read the README.upgrade-pgsql-database thorougly: http://code.x2go.org/gitweb?p=x2goserver.git;a=blob;f=x2goserver/doc/README… Below, you can see the corresponding changelog entries for the new releases. One aspect we are really proud of is the number of people who have contributed to this release set. Thanks to all people contributing to X2Go. light+love, Mike X2GOSERVER ========== x2goserver (3.1.0.0-0~x2go1) RELEASE; urgency=low [ Oleksandr Shneyder ] * New upstream version (3.1.0.0): - remove ports used by X2Go session from database after session was finished if postgres backend is used. - before resuming X2Go session check if reserved ports still available in other case find new free ports, save them in database and send to x2goclient - run netstat -tl --all to find free ports for graphic, sound and sshfs tunnels in x2gostartagent and x2goresume-session [ Milan Knížek ] * New upstream version (3.1.0.0): - Fix removal of desktop link on x2goumount-session if local folder of a Windows client gets unmounted. - Remove redundant -S option from x2goagent start-up command line. - Use -f $XAUTHORITY with xauth calls. [ Sören Plönnigs ] * New upstream version (3.1.0.0): - Only run kdialog/zenity from x2goumount-session if either of them exists in the system's $PATH. [ Jan Engelhardt ] * New upstream version (3.1.0.0): - Use /cgi-bin/man/ path in web'ified man pages. - Use ,,${MAKE}'' instead of ,,make'' in Makefile. [ Mike Gabriel ] * New upstream version (3.1.0.0): - Provide new package x2goserver-fmbindings. Derived from a package draft provided by Milan Knížek (Thanks!). - Do not create desktop icons for rootless (i.e. non-desktop) sessions. - Allow other $XAUTHORITY values than the default ($HOME/.Xauthority). - For x2gomountdirs / x2goumount-session allow other TMP paths than /tmp. Use ENV{'TMP'} instead, unless it is empty. Then use /tmp. - Place quotations where appropriate into shell scripts. - Fix call to x2goterminate-desktopsharing in x2goruncommand. - Tolerate user names containing "-" characters (SQLite DB backend). - Make sure x2gocleansessions close _all_ open file handles after forking as a daemon. - Add copyright header for x2gofm script. - Add man page for x2gogetservers script. - Add man page for x2gofm wrapper script. - Update date and release version in man pages. * Let x2goserver package suggest x2goserver-fmbindings. * Add package upgrade warning for installation using PostgreSQL. The upgrade warning refers to README.upgrade-pgsql-database. * x2goserver-fmbindings does not have to depend on ${shlibs:Depends}. -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 14:37:34 +0100 X2GOCLIENT ========== x2goclient (3.99.1.0-0~x2go1) RELEASE; urgency=low [ Mike Gabriel ] * New upstream version (3.99.1.0): - Update German translation file (thanks to Stefan Baur). - Build .qm translation files on the fly during build. - Fix for zh_TW translation: add qt_zh_TW.qm file from Qt4.8. - Add language property to the French translation file. - Update qt_<LANG>.qm files from Qt4.8 (as in current Debian sid). - Rename x2goclient_nb.ts to x2goclient_nb_no.ts. - Update all translation files (lupdate), translate unfinished translation tags in x2goclient_de.ts. - Provide empty translation file x2goclient_en.ts. - Fix misspelled word ,,Authentification'' -> ,,Authentication''. - Fix misspelled word ,,recieved'' -> ,,received''. - Update date and release version in man page. [ Mihai Moldovan ] * New upstream version (3.99.1.0): - Mac OS patch: Raise the stack space to 2MB for secondary threads. It previously used the 512KB system default. [ Daniel Lindgren ] * New upstream version (3.99.1.0): - Add Swedish translation file. - Fine-tune Swedish translation file. [ Terje Andersen ] * New upstream version (3.99.1.0): - Add Norwegian (Bokmal) translation. Qt4 lacks Norwegian/Bokmal support, so some of the widgets may stay in English. - Fine-tune/fix Norwegian (Bokmal) translation. [ Jan Engelhardt ] * New upstream version (3.99.1.0): - Use /cgi-bin/man/ path in web'ified man pages. - Use ,,${MAKE}'' instead of ,,make'' in Makefile. - Include <netinet/in.h> in sshprocess.h to fix missing struct sockaddr_in. [ Oleksandr Shneyder ] * New upstream version (3.99.1.0): - Get new ports from x2goresume-session if reserved ports are busy - Fix segmentation fault by failed SSH connection to X2Go server -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 14:49:49 +0100 NX-LIBS ======= nx-libs (2:3.5.0.11-0) RELEASE; urgency=low [ Mike Gabriel ] * Use ,,$(MAKE) -C'' in main Makefile for calling Makefiles in subdirectories, make build stanza work for nx-libs-full and nx-libs-lite. * Do not install libXinerama directly into /usr/lib/nx. Recommended method is installing to /usr/lib/nx/Xinerama, so that you can enable/disable usage of the Xinerama extension. * Update patch: 001_add-main-makefile.full+lite.patch, use curly braces for macros. * Enable parallel build for Debian package. * Merge honor-ac-dirs.patch from Jan Engelhardt (OpenSUSE) with already existing Makefile patches (012_nxcomp..., 013_nxcompext_..., 014_nxcompshad_...). * Rename patches 030_nx-X11_... and 031_nx-X11_..., the tarball roll script currently requires ,,full'' or ,,full+lite'' in the file name. * Make patch headers DEP5 compliant (030_nx-X11_... and 031_nx-X11_...). * Update patch: 001_add-main-makefile.full+lite.patch, fix missing $(CONFIGURE) variable. * Update patches: 012_nxcomp..., 013_nxcompext_..., 014_nxcompshad_.... Also make use of $(LIBFULL) in Makefile.in's install and uninstall stanzas. Inspired by Jan Engelhardt's so-version.diff patch. However, the version name change requested in that patch has been rejected for NX (redistributed). * Apply patches for the Debian package as the last patches in the series. * Fix faulty patch name suffix (has to be .patch, not .diff). * Fix Xinerama support in Debian package libnx-x11 when NX gets built with patch 600_nx-X11+nxcompext+nxcompshad_unique-libnames.full.patch. Still on the todo list: fix the nx-X11 installation via Makefile. * Fine-tune symlinking of libXinerama. [ Jan Engelhardt ] * Update patch: 001_add-main-makefile.full+lite.patch, allow passing of configure args. * Add patch: 030_nx-X11_configure-args.diff. Allow passing of configure args. * Add patch: 031_nx-X11_parallel-make.diff, enable parallel make. * Add patch: 301_nx-X11_use-shared-libs.full.diff, use shared libraries from distribution rather then libs included in source tree. * Add patch: 032_nx-X11_no-x11r6-project-root. We must not overlap with any existing files, therefore, both /usr/X11R6 and /usr are excluded possibilities for ProjectRoot. Use %_libexecdir/somename, since that is still allowed by FHS. * Add patch 600_nx-X11+nxcompext+nxcompshad_unique-libnames.full.patch, use unique library names for nx-X11 based X11 libraries. -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 14:41:07 +0100 X2GOGNOMEBINDINGS ================= x2gognomebindings (2.0.1.4-0~x2go1) RELEASE; urgency=low * New upstream version (2.0.1.4): - Apply implicit.diff patch from Jan Engelhardt (OpenSUSE). - Add x2gofeature support (feature provided: X2GO_GNOMEBINDINGS). -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 14:55:40 +0100 X2GOLXDEBINDINGS ================ x2golxdebindings (1.0.1.2-0~x2go1) RELEASE; urgency=low * New upstream version (1.0.1.2): - Continue development... - Add x2gofeature support (feature provided: X2GO_LXDEBINDINGS). -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 14:53:41 +0100 X2GODESKTOPSHARING ================== x2godesktopsharing (3.0.1.4-0~x2go1) RELEASE; urgency=low * New upstream version (3.0.1.4): - Always use /tmp for lock and session sharing socket (Fixes user individual temp dirs in Debian Edu / Skolelinux). - Pass username of user who requests desktop sharing to x2gostartagent. * Depend on x2goserver (>=3.0.99.9). -- Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Wed, 22 Feb 2012 15:00:54 +0100 -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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Re: [X2Go-Dev] X2Goplugin
by Vasilica Petcu 22 Feb '12

22 Feb '12

Hello again, thank you for your explanations about the firefox plugin. I did a simple search and found this link: https://addons.mozilla.org/en-US/developers/docs/sdk/1.0/dev-guide/module-d… I don't how you are building the xpi plugin, but after reading a bit, seems that it is a pretty nice way of making a firefox extension based on local native libs. And I think it can be automated, too... Of course, you still need the windows machine to make a windows compatible plugin, so waitinf for your new server is a must, too :) If I can help, with this task, let me know, please. Not much of an expert, but ... Greatings, Vasilica Petcu

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off-topic / on-topic threads on x2go-dev mailing list
by Mike Gabriel 22 Feb '12

22 Feb '12

Hi all, as the traffic on the x2go-dev mailing list is currently growing enormously (which probably is partially my fault, as well ;-) ), this shows me that X2Go is in the discussion and also being used at your sites. That is very great. The dynamism is really lovely. However, also the development team and the number of contributors is growing. The number of incoming patches has measurably increased within the last two months. That is awesome and we are very happy to observe this. Meanwhile, this x2go-dev list is turning into a ,,real'' development list. We more and more discuss coding issues, send in / review patches, etc. So, I (and also other developers) have to become more strict when discussion threads run off-topic for a development list. Please consider your topic well that you post to x2go-dev, make sure it is a development issue, a bug, etc. However, issues that relate to using X2Go, fine-tuning your setup, etc.pp. please consider sending to the x2go-user mailing list. Please support us with our work by using the x2go-user list for issues on using X2Go. Let us keep this channel free for development. Thanks to all for your great and continuous contributions, Mike -- DAS-NETZWERKTEAM mike gabriel, dorfstr. 27, 24245 barmissen fon: +49 (4302) 281418, fax: +49 (4302) 281419 GnuPG Key ID 0xB588399B mail: mike.gabriel(a)das-netzwerkteam.de, http://das-netzwerkteam.de freeBusy: https://mail.das-netzwerkteam.de/freebusy/m.gabriel%40das-netzwerkteam.de.x…

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Re: [X2Go-Dev] Preferred settings for X2go LAN use
by Michael Kromer 22 Feb '12

22 Feb '12

Hello Stefan, well, in real world I would never use LAN as a setting, even on LAN i would use WAN as the primary setting. We've benchmarked it, and without access to the benchmarks right now (you should find them in some article by Harald Milz in the german issue of the linux magazine some months ago) I can only say: You'd have it better that way. I would recommend you to use jpeg compression in combination with libjpegturbo, since this makes a real difference - especially on modern netbooks since their processor speed is not the best but in combination with the SSE-instruction sets which are used for libjpegturbo this makes a major performance boost (up to 3x in my lab tests). But: please tell us: what glitches do you suffer? What settings are you using? An upgrade to Gigabit will not help you much IMHO, since one session and 100 Mbit is far more than enough. The only point where you could have fun with is with lower latency times - but a dedicated 100 mbit with not too much traffic should be a low latency line anyways ... - mike -----Ursprüngliche Nachricht----- Von: newsgroups.mail2(a)stefanbaur.de Gesendet: Di 21.02.2012 20:27 Betreff: [X2Go-Dev] Preferred settings for X2go LAN use An: x2go-dev(a)lists.berlios.de; > Hi everyone, > > any recommendations on what settings I should use in X2go-Client when > the server is on the same LAN as the clients, and I want to watch > youtube (with Pulseaudio sound) via X2Go? The default settings already > look (and sound) promising, but it seems there are a few glitches... and > I'm wondering if they are real bugs or just side effects of a > less-than-ideal session setting. > > I'm currently using a 100MBit switched LAN, with the option to upgrade > to 1 GBit LAN if that would make a major difference. > > -Stefan > _______________________________________________ > X2Go-Dev mailing list > X2Go-Dev(a)lists.berlios.de > https://lists.berlios.de/mailman/listinfo/x2go-dev >

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x2godesktopsharing: Full Access not available for other users?
by Milan Knížek 22 Feb '12

22 Feb '12

Hello list! I am a bit confused re. the discrepancy between wiki and actual behaviour of x2godesktop sharing: x the wiki [1] reads that With the desktopsharing function of X2go you can have full-access the desktop from somebody else... x when I (USER_B) connect from a remote machine with x2goclient to "local desktop" (USER_A logged in on tty7 of x2goserver), the USER_A's session is shown in the lists of sessions available for sharing, however the button "Full Access" is greyed-out and cannot be clicked. So USER_B is only allowed to view the USER_A's deskto. x having looked at x2godesktopsharing.git/sharetray.cpp, I can see that this is due to "bShadow->SetEnabled ( user==getCurrentUname() );" and have verified that the following patch removes the limitation: === --- onmainwindow_part2.cpp<---->2011-11-25 13:08:10.000000000 +0100 +++ onmainwindow_part2.cpp_mod<>2012-02-19 19:50:36.200838546 +0100 @@ -1132,7 +1132,7 @@ index.row(), D_USER ).data().toString(); bShadowView->setEnabled ( true ); - bShadow->setEnabled ( user==getCurrentUname() ); + bShadow->setEnabled ( true ); } } === Is this intentional behaviour due to the potential security issues mentioned here [2] (anyway, the remote user _can_ recompile the x2goagent to get rid of the limitation)? [1] http://www.x2go.org/wiki:components:desktop-sharing#usage [2] http://comments.gmane.org/gmane.linux.terminal-server.x2go.devel/2437 Regards, Milan -- http://www.milan-knizek.net/ About linux and photography (Czech only) O linuxu a fotografování

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Usernames with dashes causes errors?
by christoffer krakou 22 Feb '12

22 Feb '12

Hello x2go people :) i have a server running Ubuntu 11.10 with an x2goserver installation, version 3.0.99.10-0~434~oneiric1, and it is running well and stable. We had some strange problems, though. We contacted a school, who would help us test the server under daily use, and made some test users for them, called "test-*their name*". When they, and i, tried to log into those users, the client would freeze, no error message or anything. On the server, the x2goagent would run amok, soaking up CPU power. The problem seems to occur only on users with dashes in their names. Can anyone replicate this? it is quite strange -- Venlig Hilsen / Best Regards Christoffer Krakou Fleten.net APS

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x2goclient.exe - Saving session settings to registry
by newsgroups.mail2＠stefanbaur.de 22 Feb '12

22 Feb '12

Hi List, is there any particular reason why x2goclient.exe will save session settings to the registry and will only use a "sessions" file when called with "--portable"? Using the "sessions" file is the default for Linux and AFAIK also for Mac OS X, so why the variation in x2goclient.exe? IMO, using the sessions file by default simplifies handling across client operating systems (especially as there is no import/export option between the "sessions" file on Windows and the registry). That's why saving to the registry should be dropped if nobody uses it, or made optional ("--save-to-registry" or somehing like that) if there are a few users that need it. So, to the Windows client users out there: Can anyone of you think of a reason that speaks against saving the settings in a file? Until we have a decision on that, my workaround is a link with the following destination: X:\x2goclient.exe --portable --home=%USERPROFILE% (where X: is a read-only network drive, and %USERPROFILE% is a reserved variable on Windows that contains the path to the user's home directory) BTW, Alex will soon implement a change so that the sessions file can be stored on the read-only network drive as well. -Stefan

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[PATCH] Fix threading on OS X.
by Mihai Moldovan 22 Feb '12

22 Feb '12

Raise the stack space to 2MB for secondary threads. It previously used the 512KB system default. Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- sshmasterconnection.cpp | 11 +++++++++-- 1 files changed, 9 insertions(+), 2 deletions(-) diff --git a/sshmasterconnection.cpp b/sshmasterconnection.cpp index c922af2..2626346 100644 --- a/sshmasterconnection.cpp +++ b/sshmasterconnection.cpp @@ -46,6 +46,11 @@ static bool isLibSshInited=false; SshMasterConnection::SshMasterConnection ( QString host, int port, bool acceptUnknownServers, QString user, QString pass, QString key,bool autologin, bool krblogin, QObject* parent ) : QThread ( parent ) { +#if defined ( Q_OS_DARWIN ) + // Mac OS X provides only 512KB stack space for secondary threads. + // As we put a 512KB buffer on the stack later on, we need a bigger stack space. + setStackSize (sizeof (char) * 1024 * 1024 * 2); +#endif this->host=host; this->port=port; this->user=user; @@ -62,7 +67,7 @@ SshMasterConnection::SshMasterConnection ( QString host, int port, bool acceptUn else x2goDebug<<"starting ssh connection without kerberos authentication"<<endl; #endif -kerberos=false; + kerberos=false; } SshMasterConnection::SshMasterConnection ( QString host, int port, bool acceptUnknownServers, QString user, @@ -70,7 +75,9 @@ SshMasterConnection::SshMasterConnection ( QString host, int port, bool acceptUn int remotePort, QString localHost, int localPort, SshProcess* creator, QObject* parent, ONMainWindow* mwd ) : QThread ( parent ) { - +#if defined ( Q_OS_DARWIN ) + setStackSize (sizeof (char) * 1024 * 1024 * 2); +#endif this->host=host; this->port=port; this->user=user; -- 1.7.9

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X2Goplugin
by Vasilica Petcu 21 Feb '12

21 Feb '12

Greetings, I use to play with x2go plugin some time ago, when it was available as a xpi firefox extension. I have visited your wiki page about the plugin, but as you know, it is not updated. Could you give me some hints how can I make a page where the user access it and download automatically the plugin, install it on the client machine ? This option is still available, right ? Thank you

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