x2go-dev November 2014

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34 participants
158 discussions

Bug#665: security improvement for x2gobroker
by Stefan Baur 01 Apr '15

01 Apr '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Package: x2gobroker Severity: wishlist Feature Request: Save temporary x2goclient_authorized_key to a tmpfs to ensure safe removal/destruction of file in case of system crash. Note: This may require a SELINUX config change. (Bug filed on behalf of Mike#1) - -- 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBAgAGBQJUXAhaAAoJEG7d9BjNvlEZZFQH/i/gq1/GdTwjw+VRk1Ufev1B abje8Q4zV6gnMjeBAj2panHr8l6xfTBU8Xhi7qQ9XxBrPY3TRpnI/L5dMD/Sfrrp /cb3Cq8D9mFKdi+C7o+hbRy7OJCiTXacPvV2Z/sJlS+0IhuaFQYDGtVKCzpYCn/+ R4bCmmSwEujVUIg++4/KT2I4W01SWKYhvK80QFc3ZXQlRv+NfHBkOKpxBiEO7XZD 0LXmNTQVznPPBLzSEjYeCcz5Jn2rkX5zAaItneJ31iJxib3VkN2LR9V0F/iFgq7o JGBuqI3lXBtkzs1gxdYZR9LR5w+6JRiC/8cuoBAPzUOdbq8XvT2M3M8bacFSGI8= =iCAu -----END PGP SIGNATURE-----

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Bug#276: qt/kde applications does not work as root.
by Pascal d'Hermilly 27 Mar '15

27 Mar '15

Package: x2goclient Version: 4.0.1.0 When I start qt/kde applications on the x2go server via the x2goclient, I get a grey application and a lot of error messages in the konsole. A workaround seems to be to change the graphicssystem to native instead of raster. However raster is the default in Kubuntu and it doesnt work when running things as root or through sudo. administrator@desktops-x2go:~$ sudo dolphin --graphicssystem raster X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x420007d X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x420007d X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x420007d X Error: BadDrawable (invalid Pixmap or Window parameter) 9 Major opcode: 62 (X_CopyArea) Resource id: 0x420007d X Error: BadPixmap (invalid Pixmap parameter) 4 Major opcode: 54 (X_FreePixmap) Resource id: 0x420007d X Error: BadShmSeg (invalid shared segment parameter) 128 Extension: 129 (MIT-SHM) Minor opcode: 2 (X_ShmDetach) Resource id: 0x420007c administrator@desktops-x2go:~$ sudo dolphin --graphicssystem native this works fine. Also gtk applications such as gimp works fine as root. This is quite a problem when you want to add/remove users and do other administrative things in KDE.

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Failure negotiating the session in stage '7'
by Herbst, Sebastian 25 Mar '15

25 Mar '15

HI all, thank you for your work on x2go. It is a great tool. Unfortunately there is one single server. I can't connect to. It is installed just like another one (same packages different hardware), that is working, so it surely's got all necessary packages. XForwarding over ssh is working. As my other machines work well with each other, I am positive that this is an issue on the server. I tried to debug this, by increasing the log level on the server, but nothing suspicious showed up. The only hint is the client output: "Error: Failure negotiating the session in stage '7'. Error: Wrong version or invalid session authentication cookie." However none of the hints I googled worked for me. Also in IRC nobody was able to help me. I don't how to proceed. So I figured you could perhaps help me narrow down the problem. It is there any documentation describing the interaction of the server parts? If this is the wrong list to ask, please excuse me. Regards Sebastian Herbst

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Bug#584: x2go Session Broker don't work with shadow sessions
by KeRo 19 Mar '15

19 Mar '15

Package: x2gobroker Version: 0.0.3.0 I have two type of broker session configured, MATE for normal desktop use and a SHADOW session for support and presentation. MATE sessions work fine but SHADOW session show Access Denied throw broker (Direct shadow session configured in x2go client work fine) The session displays of shadow connection dont appear throw broker :S x2go Server is a Ubuntu Desktop 14.04 with MATE Error in x2go Server syslog: NOVEA-desk /usr/bin/x2gostartagent: user ,,pam'' requests desktop sharing from user ,,'' for desktop ,,'' NOVEA-desk /usr/bin/x2gostartagent: ERROR: user denied desktop sharing session Broker sessions config: [DEFAULT] command=TERMINAL defsndport=true useiconv=false iconvfrom=UTF-8 height=768 export= quality=9 fullscreen=false layout=es useexports=true width=1024 speed=2 soundsystem=pulse print=true type=pc105/es sndport=4713 xinerama=true variant= usekbd=true fstunnel=true applications=TERMINAL,WWWBROWSER,MAILCLIENT,OFFICE multidisp=false sound=true rootless=true iconvto=UTF-8 soundtunnel=true dpi=96 sshport=22 setdpi=0 pack=16m-jpeg directrdp=false user=BROKER_USER usesshproxy=true sshproxytype=SSH sshproxyhost=broker.test.com sshproxyport=22 sshproxyautologin=false sshproxysamepass=true sshproxysameuser=true [NOVEA-pim-access] name=NOVEA ACCESS host=172.16.110.101 command=MATE acl-users-allow=pim acl-users-deny=ALL acl-clients-deny=ALL acl-clients-allow=0.0.0.0/0 acl-any-order=deny-allow [NOVEA-pim-support] name=NOVEA Support host=172.16.110.101 command=SHADOW acl-users-allow=pim acl-users-deny=ALL acl-clients-deny=ALL acl-clients-allow=0.0.0.0/0 acl-any-order=deny-allow [NOVEA-pam-access] name=NOVEA ACCESS host=172.16.110.101 command=MATE acl-users-allow=pam acl-users-deny=ALL acl-clients-deny=ALL acl-clients-allow=0.0.0.0/0 acl-any-order=deny-allow [NOVEA-pam-support] name=NOVEA Support host=172.16.110.101 command=SHADOW acl-users-allow=pam acl-users-deny=ALL acl-clients-deny=ALL acl-clients-allow=0.0.0.0/0 acl-any-order=deny-allow Thanks for your help.

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Bug#625: Enabling Kerberos5 (GSSAPI) Auth deletes saved Putty Sessions
by Sterzinger, Benedikt 05 Mar '15

05 Mar '15

Package: x2goclient Version: 4.0.2.1 After establishing to a x2go server with GSSAPI auth enabled, all the sessions saved in putty are gone. We found this snippet in the source code (sshprocess.cpp): void SshProcess::rmPuttyReg(QString uuidStr) { QSettings st("HKEY_CURRENT_USER\\Software\\SimonTatham\\PuTTY\\Sessions", QSettings::NativeFormat); st.remove(uuidStr); st.sync(); } ... void SshProcess::slotSshProcFinished(int exitCode, QProcess::ExitStatus exitStatus) { normalExited=false; if (exitCode==0 && exitStatus==QProcess::NormalExit) normalExited=true; #ifdef DEBUG x2goDebug<<"ssh process exit code :"<<exitStatus; #endif #ifdef Q_OS_WIN if(masterCon->useKerberos()) { rmPuttyReg(procUuid); } #endif slotChannelClosed(this,procUuid); } Is this necessary? *********** Hinweis zur Datensicherheit Die Datenübertragung über das Internet erfolgt derzeit im Wesentlichen ungesichert. Die Vertraulichkeit sensibler, personenbezogener Daten gegenüber Dritten ist nicht gewährleistet. Es ist nicht ausgeschlossen, dass übermittelte Daten von Unbefugten zur Kenntnis genommen und eventuell sogar verfälscht werden. Falls Sie uns Informationen mit vertraulichem Inhalt und/oder personenbezogenen, sensiblen Daten per E-Mail zusenden wollen, empfehlen wir Ihnen, diese zu verschlüsseln. Bitte setzen Sie sich bzgl. der geeigneten Kryptotechnik mit uns in Verbindung. Wenn Sie Informationen unverschlüsselt per E-Mail an uns senden, erklären Sie sich mit der unverschlüsselten Beantwortung per E-Mail durch uns einverstanden. Falls Sie dies nicht wünschen, teilen Sie uns dies bitte mit. Sie erhalten die von Ihnen gewünschten Informationen dann auch gerne per Post oder Telefax übermittelt. Hinweis zu Vertraulich- und Rechtsverbindlichkeit Der Inhalt des erhaltenen E-Mails ist vertraulich zu behandeln und ausschließlich für den bezeichneten Adressaten bzw. dessen Vertreter bestimmt. Sollten Sie nicht der für unsere Nachricht vorgesehene Empfänger sein, so bitten wir Sie, sich mit dem Absender dieser E-Mail unverzüglich in Verbindung zu setzen, die empfangene E-Mail nebst etwaiger Anlagen aus Ihrem System zu löschen sowie ggf. existierende Ausdrucke zu vernichten. Wir machen darauf aufmerksam, dass der Inhalt dieser E-Mail nicht rechtsverbindlich ist, da über das Internet erstellte E-Mails leicht manipuliert oder unter falscher Absenderkennung erstellt werden können. Eine rechtsverbindliche Bestätigung erhalten Sie gerne auf Anfrage in schriftlicher Form. Eine Veröffentlichung, Vervielfältigung oder Weiterleitung des Inhaltes dieser E-Mail ist nur nach unserer vorherigen schriftlichen Einwilligung gestattet.

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Bug#510: ctrl-alt-f crashes x2go windows 7 client
by Rob MacLachlan 03 Mar '15

03 Mar '15

Package: x2go I'm running x2go win32 client, version 4.0.2.0. Similar behavior happened in 4.0.1.2. This with remote host running x2goversion x2goagent: 3.5.0.21 x2goserver: 4.0.1.13 x2goserver-extensions: 4.0.1.13 x2goserver-fmbindings: 4.0.1.13 x2goserver-xsession: 4.0.1.13 # Springdale linux 6.5 uname -a inux lov3.int.autonlab.org 2.6.32-431.17.1.el6.x86_64 #1 SMP Wed May 7 21:28:34 EDT 2014 x86_64 x86_64 x86_64 GNU/Linux Whenever I type ctrl-alt-f, bad things happen. I understand this is supposed to switch full screen mode in the default shortcuts, but it doesn't actually successfully create a working full-screen setup (no keystrokes are recognized), and anyway the reason I'm typing ctrl-alt-f is to do "forward form" in EMACS. I would be fine with just changing the default shortcuts, but I haven't been able to figure out how to do that either. The wiki instructions on changing the shortcuts don't seem to work (maybe obsolete file location?). Rob

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Bug#563: packages broken
by A 05 Feb '15

05 Feb '15

Package: x2goserver Version: Since the wiki doesn't say, and I'm unable to install it - I don't know what version but I presume the latest? CentOS 5 Transaction Check Error: /usr/share/man/man3/Sys::Syslog.3pm.gz from install of perl-Sys-Syslog-0.27-1.el5.rf.i386 conflicts with file from package perl-5.8.8-41.el5.i386 Conversation in IRC: [08:42] <geppetto> it's a packaging problem … yum can't see file conflicts [08:42] <geppetto> the fedora policy is that if you have a file conflict you have to promote it to a real conflict [08:42] <geppetto> but that's not QA'd :( [08:43] <geppetto> don't use the .rf. repo? … use a newer perl from the .rf repo? [08:43] <geppetto> Maybe install an older version of perl-SysSylog from the .rf repo. … if that doesn't have file conflicts [08:48] <geppetto> Those packages are conflicting with the ones from your distro. … but using file conflicts

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Bug#658: session connect with Python X2Go freezes if gevent 0.13.6 is used
by Mike Gabriel 31 Jan '15

31 Jan '15

Package: python-x2go Sevrity: important Hi Pavel, Jan, TL;DR; for the bug tracker... Python X2Go 0.5.0.x freezes during X2GoControlSession.connect() when used with gevent 0.13.6. With Python 0.4.0.x no such freeze could be observed. On Mi 29 Okt 2014 10:24:53 CET, Mike Gabriel wrote: > Hi Pavel, hi Jan, > > On Di 28 Okt 2014 16:00:34 CET, Mike Gabriel wrote: > >> Hi, >> >> On Di 28 Okt 2014 15:28:53 CET, hanak wrote: >> >>>> Hi all, >>>> >>>> I have a problem with an newly installed pyhoca-gui >>>> >>>> while I can connect from an debian-wheezy with pyhoca-gui 0.4.0.9 >>>> without problems, an newly installed pyhoca-gui at another computer with >>>> version 0.5.0.2 pyhoca-gui freezes at the moment when it tries to >>>> establish the ssh connection. >>> >>> I confirm exactly the same behavior on debian-wheezy when running >>> pyhoca-cli. >>> >>> While on pyhoca-cli 0.4.0.2-1 (pyhoca-x2go 0.4.0.9-1) everything works >>> without problems, on pyhoca-cli 0.5.0.1-1 (python-x2go 0.5.0.1-1) >>> connection freezes with exactly the same debug... >>> >>> Best regards >>> >>> Pavel >> >> can anyone of you send me an obfuscated ~/.x2goclient/sessions file? >> >> Plus: what openSSH server version is installed on the X2Go Server? >> >> Mike > > I am so sorry, guys, but I cannot reproduce the issue here. As I > said earlier. I observed those hangs once or twice, but wasn't able > to reproduce them. > > I tested pyhoca-gui on jessie and on wheezy (+ some backports) and > things worked out fine. > > I connected to servers of several Debian and Ubuntu versions. > > A bit clueless, sorry... > > Mike I have a system that exhibits the same behaviour, as described by you! A Ubuntu precise system with python-gevent (I obviously did not provide a newer gevent version for precise in our X2Go PPA on Launchpad). I will join in to get this narrowed down. Mike -- DAS-NETZWERKTEAM mike gabriel, herweg 7, 24357 fleckeby fon: +49 (1520) 1976 148 GnuPG Key ID 0x25771B31 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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Bug#108: Missing fonts in X application
by Stephane Mutz 25 Jan '15

25 Jan '15

Package: x2goclient Setup: X2go server on Ubuntu 12.10, client on Win7 Issue: One of our CAD application displays unreadable text. When trying to select another font, only one is available. xlsfonts also reports only a few fonts. The application works fine locallyor when using a Linux X2go client and xlsfonts shows a long list of fonts. How to solve: Install the 'font' directory from the VcXsrv mainline package. After that, the application shows readable text and provides a large selection of alternative fonts. I think it would be good to bring the Windows and Linux client closer by shipping a more complete VcXsrv with it or at least offering the option.

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Bug#616: Finally managed to record the issue "on tape"
by Stefan Baur 09 Jan '15

09 Jan '15

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everyone, please have a look at http://youtu.be/5RJ2kwrgeXI This is X2Go Client 4.0.3.0 showing the 5-second startup delay (hourglass cursor). Note that the on-access virus scanner was disabled for this recording, as can be seen on the lower right (red icon), so we can that one rule out as the cause of the problem. Things I learned, trying to capture this: - - The effect does not occur inside a VMware Workstation VM. So you neither see it nor will you be able to record it there. - - The effect does occur on real hardware as well as on a Linux-LVM accessed via RDP. - - It is impossible to record the effect using CamStudio. While you can witness the effect occurring live, the recorded video will only show the regular mouse arrow. - - Recording the effect was possible using Microsoft Expression Encoder. $DEITY knows why. @Alex: This effect occurs since you tried to introduce the "reaper" process (even before you split x2goclient.exe into half with the helper, I think). It was not present before that. Kind Regards, 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 -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQEcBAEBAgAGBQJUR8VzAAoJEG7d9BjNvlEZjA8H/2Rgrylw+6WAh5UM8exvNmYP HJz34yupT76NhMbJJkH8f+PJmxnQmPEOgSDTVW4U0ouVWG+yxkJBw1hHOGq8gxjC /JgsiABktyP++VVz1WVH4suQ5EiGf47pcVJ+kKngClujvF5TV0eNeP5eXVNgbuzn Io8UXnmvVWgqfzKoHehj+DhFXRY5AsYCwng0GrY3r/QrCYmhNmSbW9H2+lf8HJnN wMw4yErdg0a65Vzn5+g5w/HRsnGaCgxgn7OFmelnLqnIiRQ90jd/UtaiEKXCSE1D baziXOHtQx54QEpob1Gye1aKjyGWn8uL3ylj2oWH4T+RhPgUSAXjTUYZQyKpLBw= =NUm/ -----END PGP SIGNATURE-----

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x2go-dev November 2014