x2go-dev March 2015

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196 discussions

Bug#685: X2Go issue (in src:x2gobroker) has been marked as pending for release
by Mike Gabriel 31 Mar '15

31 Mar '15

tag #685 pending fixed #685 0.0.3.0 thanks Hello, X2Go issue #685 (src:x2gobroker) 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=x2gobroker.git;a=commitdiff;h=7b98c05 The issue will most likely be fixed in src:x2gobroker (0.0.3.0). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit 7b98c0514eaae794ce5880f86bab12f3a2bf9766 Author: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Date: Tue Mar 31 06:00:59 2015 +0200 Provide x2gobroker system user public keys to broker agents with SSH options--strongly restricting the key usage--now. Modify x2gobroker- pubkeyauthorizer in a way that it replaces non-option keys with the newly provided optionized/restricted pubkeys. (Fixes: #685). diff --git a/debian/changelog b/debian/changelog index a0640e5..d13ad72 100644 --- a/debian/changelog +++ b/debian/changelog @@ -285,6 +285,10 @@ x2gobroker (0.0.3.0-0x2go1) UNRELEASED; urgency=low hand-back the system's hostname to X2Go Client / Python X2Go. - Add security notice / disclaimer to x2gbroker.1 man page as suggested by Stefan Baur. (Fixes: #666). + - Provide x2gobroker system user public keys to broker agents with SSH + options--strongly restricting the key usage--now. Modify x2gobroker- + pubkeyauthorizer in a way that it replaces non-option keys with the + newly provided optionized/restricted pubkeys. (Fixes: #685). * debian/control: + Provide separate bin:package for SSH brokerage: x2gobroker-ssh. + Replace LDAP support with session brokerage support in LONG_DESCRIPTION.

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Bug#666: X2Go issue (in src:x2gobroker) has been marked as pending for release
by Mike Gabriel 30 Mar '15

30 Mar '15

tag #666 pending fixed #666 0.0.3.0 thanks Hello, X2Go issue #666 (src:x2gobroker) 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=x2gobroker.git;a=commitdiff;h=6652693 The issue will most likely be fixed in src:x2gobroker (0.0.3.0). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit 6652693c1fe47dbc53f84db84fab34f70485951a Author: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Date: Mon Mar 30 16:57:56 2015 +0200 Add security notice / disclaimer to x2gbroker.1 man page as suggested by Stefan Baur. (Fixes: #666). diff --git a/debian/changelog b/debian/changelog index 8ac74a1..a0640e5 100644 --- a/debian/changelog +++ b/debian/changelog @@ -283,6 +283,8 @@ x2gobroker (0.0.3.0-0x2go1) UNRELEASED; urgency=low - man pages: Update date. - If non-load-balanced session profiles reference a non-reachable host, hand-back the system's hostname to X2Go Client / Python X2Go. + - Add security notice / disclaimer to x2gbroker.1 man page as suggested + by Stefan Baur. (Fixes: #666). * debian/control: + Provide separate bin:package for SSH brokerage: x2gobroker-ssh. + Replace LDAP support with session brokerage support in LONG_DESCRIPTION.

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X2Go Session Broker, now with load checker service
by Mike Gabriel 30 Mar '15

30 Mar '15

Dear all, within the last week I have been working on X2Go Session Broker a bit more, pushing it towards release 0.0.3.0. One feature, that was still missing, was a means to perform load checks on associated load-balanced X2Go servers, so that a real "load" balancing could take place. Until last week, server load was detected by only counting the number of running / suspended X2Go sessions. If you have users that are working hard on an X2Go server, then the number of sessions is a very inaccurate way of detecting server load. So now, we count X2Go sessions plus detect a couple of server metrics (via a background daemon, aka x2gobroker-loadchecker). All gathered information will be combined into a load-factor. The load-factor and the number of running/suspended sessions, will decide on what host the next new X2Go session will be started. Quick install for testing the new feature (from the nightly builds, of couse): Debian: apt-get install x2gobroker # will update your x2gobroker packages apt-get install x2gobroker-loadchecker -> make sure x2gobroker-loadchecker starts via your init system edit /etc/x2go/x2gobroker.conf, set use-load-checker for inifile broker backend -> make sure, you have at least one session profile setup in /etc/x2go/broker/x2gobroker-sessionprofiles.conf that uses more than one host -> make sure, that you use "broker-agent-query-mode = SSH" for this session profile. -> for the fully-featured show, enable X2GOBROKER_DEBUG in /etc/x2go/broker/defaults.conf Now watch /var/log/x2gobroker/loadchecker.log and /var/log/x2gobroker/broker.log for system load information. I'd be happy to receive some test results within the next couple of days/2-weeks. The 0.0.3.0 release is heavily overdue and I would like to finalize this version by the beginning of April. Thanks+Greets, 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#830: QAction::eventFilter: Ambiguous shortcut overload: Ctrl+Q
by Mike Gabriel 30 Mar '15

30 Mar '15

Package: x2goclient Version: 4.0.4.0 Severity: minor This mail's subject says it all: QAction::eventFilter: Ambiguous shortcut overload: Ctrl+Q. When hitting Ctrl+Q in X2Go Client, I would expect X2Go Client to close. However, it only throws the above message on the underlying terminal if launched from one. Greets, 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#832: X2Go Client in broker mode wiath autologin enabled expects transmission of private SSH key file
by Mike Gabriel 30 Mar '15

30 Mar '15

Package: x2goclient Severity: important Version: 4.0.4.0 If brokerage with autologin is in use (a very common broker setup), the current client<->broker communication design in X2Go Client is that the broker creates a SSH pubkey/privkey pair and transmits the private key to the client. Never should we transmit private key files over the wire!!! The X2Go Session Broker is already able to accept pubkey files from the client side and deploy those pubkeys appropriately. In Python X2Go, this is already used. X2Go Client should switch here: create pubkey/privkey pair on client-side, push the pubkey to the broker and have it temporarily deployed from there to the X2Go Server where the next session login is scheduled by the broker. 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#831: handle autologin failures via broker gracefully
by Mike Gabriel 30 Mar '15

30 Mar '15

Package: x2goclient Version: 4.0.4.0 Severity: minor With brokerage enabled, the broker can mediate an autologin mechanism from X2Go Client to a given (brokeraged) server. The mechanism is this: o broker deploys a public key in ~/.x2go/authorized_keys on X2Go Server o X2Go Client receives the corresponding private key o (the above is already flawed, no private keys should be sent over networks, I will file another bug for that) o in SSHd, the ~/.x2go/authorized_keys must be configured as potential place for authorized_keys file If the last step is forgotten, SSH authentication with X2Go Client against the X2Go Server fails. If that fails, my expectation would be a fall-back to username / password authentication. But what happens, is: X2Go Client "gets stuck" in the session startup procedure (it's not a real freeze), it does not return to the login dialog widget anymore. Options remaining: closing X2Go Client and reopening. I stumbled over this because of a configuration in SSH daemon on one of my test boxes. 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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nx-libs SetPictureFilter() crash fix
by Mihai Moldovan 29 Mar '15

29 Mar '15

Hi Jan, The following patch will probably interest you, because it fixes the crash in SetPictureFilter(): http://code.x2go.org/gitweb?p=nx-libs.git;a=blob;f=debian/patches/0017_nx-X… Incidentally, this was also the reason why nxagent on my Gentoo system always crashed when clicking on any button in a XFCE desktop session. This fix will also be included in the next nx-libs release, but I haven't plan a date for this yet. Probably not coming any time soon, especially due to the previous emergency releases a few weeks back... Mihai

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Bug#830: X2Go issue (in src:x2goclient) has been marked as pending for release
by Mike Gabriel 28 Mar '15

28 Mar '15

tag #830 pending fixed #830 4.0.4.0 thanks Hello, X2Go issue #830 (src:x2goclient) 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=x2goclient.git;a=commitdiff;h=8008873 The issue will most likely be fixed in src:x2goclient (4.0.4.0). light+love X2Go Git Admin (on behalf of the sender of this mail) --- commit 800887326bb6dfe30170d74121422fb2c94439ff Author: Mike Gabriel <mike.gabriel(a)das-netzwerkteam.de> Date: Sat Mar 28 14:11:39 2015 +0100 debian/changelog: add closure for #830 diff --git a/debian/changelog b/debian/changelog index c48c4d2..334f8ee 100644 --- a/debian/changelog +++ b/debian/changelog @@ -240,7 +240,7 @@ x2goclient (4.0.4.0-0x2go1) UNRELEASED; urgency=low - configdialog.cpp: make XQuartz detection algorithm QStringList-based and add MacPorts location. - onmainwindow.cpp: do not define Ctrl+Q two times. Made it unusable on - Linux and Windows. + Linux and Windows. (Fixes: #830). - onmainwindow:cpp: correctly pass escaped single quote when writing remote xinerama config file. Post-fixup for #797. - {onmainwindow.cpp,README.i18n}: fix localization -- resource strings

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Issue with ssh-agent fix for bug #672
by Daryl Clevenger 27 Mar '15

27 Mar '15

Folks, I run x2go sessions for weeks, so just recently noticed this regression after a recent update from ppa:x2go/stable. I'm running % cat /etc/lsb-release DISTRIB_ID=LinuxMint DISTRIB_RELEASE=17 DISTRIB_CODENAME=qiana DISTRIB_DESCRIPTION="Linux Mint 17 Qiana" The fix was for http://bugs.x2go.org/cgi-bin/bugreport.cgi?bug=672 and the commit http://code.x2go.org/gitweb?p=x2goserver.git;a=commitdiff;h=7fdcc5d The issue is that when starting a new session, the SSH_AUTH_SOCKET is always set. As a result, on Linux Mint 17 the following code in /etc/x2go/Xsession.d/90x11-common_ssh-agent is bypassed if has_option use-ssh-agent; then if [ -x "$SSHAGENT" ] && [ -z "$SSH_AUTH_SOCK" ] \ && [ -z "$SSH2_AUTH_SOCK" ]; then STARTSSH=yes if [ -f /usr/bin/ssh-add1 ] && cmp -s $SSHAGENT /usr/bin/ssh-agent2; then # use ssh-agent2's ssh-agent1 compatibility mode SSHAGENTARGS=-1 fi fi fi since -z "$SSH_AUTH_SOCK" fails. I have a work around in my ~/.xsessionrc-x2go, but it seems that the export should only occur when the symlink is created. I personally would use &&, ln -sf "$SSH_AUTH_SOCK" "$X2GOSSH_AUTH_SOCK" && export SSH_AUTH_SOCK="$X2GOSSH_AUTH_SOCK" but the GNU ln documentation lacks any documentation about exit status for ln(1). -- Daryl Clevenger P.S. I considered replying via 672(a)bugs.x2go.org, but did not know if that is appropriate for done/closed, etc. bugs.

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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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x2go-dev March 2015