x2go-dev May 2012

x2go-dev@lists.x2go.org

19 participants
37 discussions

[PATCH] [NX] Add patch: 052_nxcomp_macos10-nxauth-location.full+lite, change nxauth search location on Mac OS X to $NX_SYSTEM/nxauth to facilitate application bundle building.
by Mihai Moldovan 26 May '12

26 May '12

Change the nxauth location from $NX_SYSTEM/bin/nxauth to $NX_SYSTEM/nxauth on Mac OS X. This way, nxauth can be shipped in the same directory, as, i.e., nxproxy in an application bundle. Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- debian/changelog | 3 ++ .../052_nxcomp_macos10-nxauth-location.full+lite | 38 ++++++++++++++++++++ debian/patches/series | 1 + 3 files changed, 42 insertions(+) create mode 100644 debian/patches/052_nxcomp_macos10-nxauth-location.full+lite

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Mac OS X 10.4 Tiger
by Mihai Moldovan 26 May '12

26 May '12

Hi, with the latest changes, x2goclient will also run on Mac OS X 10.4. However, it will not be officially supported. While x2go is generally "use at own risk", this one is "use at own risk and don't expect it to work properly." Mac OS 10.4 is really old and unsupported even by Apple Inc. - not even with security updates. The X11 server version bundled with 10.4 is also old and known to cause color problems. The X11 server is not meant to be updated by users in an easy and convenient way, … [View More]or at all. X11 server releases for 10.5 can't be installed on 10.4. Generally, starting an X11 application on 10.5 and higher will automatically launch the X11 server, if installed. This is due to structural changes in X11 integration implemented by Apple. On user login, an environmental variable called "$DISPLAY" is set and points to a UNIX socket monitored by the system daemon launchd. Whenever something tries to connect to this socket, the X11 binary is started. This is not true for 10.4. On those systems, $DISPLAY is not automatically set and thus not available from the initial environment. Starting X11 manually will spawn an xterm instance with this env. var. set. From this terminal application, other X11 applications could be launched just fine. However, non-child-processes still won't be able to communicate with the X11 server. Also, there is no easy way to know if an X11 server is already running, and if it is, on which socket it's listening. My first idea was to implement some kind of autodetection/probing for X11 sockets and connect to them in order to determine whether they work or not. This said, at the same time valid security concerns were raised. Connecting to unknown sockets is potentially dangerous, and as the place those sockets are placed in is world-writable, anyone could put a prepared socket in there. For obvious reasons, I dismissed this idea. Instead, I am now probing for a free display number and launching a separate X11 server instance whenever it is needed. Existing instances/sockets won't be re-used. This works fine, but obviously means that for every session a separate X11 server is launched and the user has to clean up those instances by hand (luckily each instance is shown as a normal application, so terminating those processes is not a problem at all.) This seemed like the safest, fastest and easiest way to go. Another way would be searching the currently running processes for X11 and examining the open files to find the socket, but this is way more complicated and not really worth the effort. Aside from that, the X11 server is listening for TCP connections by default and there is no way/option to turn this behavior off, unlike in 10.5 and higher. While the X protocol does have some security model based on the authcookies, I'm really not too happy with exposing my X11 server to the whole network. At the very least, evil users could crash the server. Evil geniuses may even obtain root access in some way or another, especially with such an old and unmaintained version. I've only been rudimentary testing remote sessions, but as far as I see, opening a new session, resuming and terminating works, at least with xterm as the remote application. I can't really test this more thoroughly, as my test system seems somewhat borked in X11 mode and is pressing "escape" after every key press. This is also happening in local xterm sessions for me, but I haven't found any information to this kind of misbehavior. Not being able to test this stuff is just another good reason to not support it officially. This said, I guess I will publish new versions for 10.4 from time to time, for those users who are bound to it and brave enough to use it. But again, if it opens up anything visible, this is far more than you should even expect. Best regards, Mihai [View Less]

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[PATCH] Change the Makefile to not delete more temporary files than necessary.
by Mihai Moldovan 26 May '12

26 May '12

A maxdepth of two will crush all temp files in the build directories. Do not mess with other stuff, especially if users are building bundled software inside a contrib/dist directory under the main tree. Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- Makefile | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)

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[PATCH 7/7] Add support for Mac OS X 10.4 Tiger. It won't be officially supported though.
by Mihai Moldovan 26 May '12

26 May '12

This patch enables a compatibility mode for Mac OS X 10.4. Using this, interaction with the local X11 server and a remote server works fine. Note however, that there is one limitation: x2goclient will start one X11 server per connection. For security reasons, this is necessary. It will *not* clean up X11 server processes. This is left to the user. More information about 10.4 support will be posted on the x2go-dev mailing list (shortly). Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> -… [View More]

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[PATCH 6/7] Add easy to turn on/off SSH packet logging to sshmasterconnection.cpp.
by Mihai Moldovan 26 May '12

26 May '12

From now on, simply use the defines at the beginning of the file. Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- sshmasterconnection.cpp | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-)

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[PATCH 5/7] Fix a potential bug in the handling of ssh hosts given to libssh.
by Mihai Moldovan 26 May '12

26 May '12

Do the conversion as suggested by the Qt FAQ at http://qt-project.org/faq/answer/how_can_i_convert_a_qstring_to_char_and_vi… Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- sshmasterconnection.cpp | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

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[PATCH 4/7] Fix copyright header on sshmasterconnection.cpp
by Mihai Moldovan 26 May '12

26 May '12

Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- sshmasterconnection.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)

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[PATCH 3/7] Add support for PowerPC on Mac OS X. Add the Info.plist file to x2goclient.pro
by Mihai Moldovan 26 May '12

26 May '12

Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- x2goclient.pro | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)

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[PATCH 2/7] Minor style/whitespace fixes for x2goclient.pro.
by Mihai Moldovan 26 May '12

26 May '12

Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- x2goclient.pro | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-)

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[PATCH 1/7] [RESEND] Add translation file processing to x2goclient.pro.
by Mihai Moldovan 26 May '12

26 May '12

Automatically build the required x2goclient_*.qm files based on the x2goclient_*.ts translation files. Signed-off-by: Mihai Moldovan <ionic(a)ionic.de> --- x2goclient.pro | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+)

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x2go-dev May 2012