Is there a way to manage xrdp sessions for multiple users?

[BloodyIron]

I'm wondering if there's a way in xrdp to be able to look at session info for multiple users for xrdp. Things like, kicking users, see who's connected, how many logins currently, etc. Is this possible?

[speidy]

xrdp-sesadmin utility is what you're looking for. On Mon, Jul 17, 2017 at 8:46 AM BloodyIron [email protected] wrote:

I'm wondering if there's a way in xrdp to be able to look at session info for multiple users for xrdp. Things like, kicking users, see who's connected, how many logins currently, etc. Is this possible?

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[BloodyIron]

It looks like xrdp-sesadmin doesn't have the working functionality to kill sessions. There is a parameter available, but documentation (and testing) shows that it doesn't work.

I'm on 0.9.0 and I don't see anything relevant to this in the release notes for newer versions.

Being able to kill sessions is very important. Are there any plans for this?

[ben-cohen]

This doesn't seem to be implemented: cmndKill() in xrdp/sesman/tools/sesadmin.c is empty.

Presumably it needs to be added to the scp (sesman protocol). On the server side, killing the session xrdp-sesman isn't enough: it needs to kill the X server and/or startwm.sh.

[speidy]

That's correct. seems like we need to keep Xorg pid as well. On Wed, Jul 19, 2017 at 11:36 PM Ben Cohen [email protected] wrote:

This doesn't seem to be implemented: cmndKill() in xrdp/sesman/tools/sesadmin.c is empty.

Presumably it needs to be added to the scp (sesman protocol). On the server side, killing the session xrdp-sesman isn't enough: it needs to kill the X server and/or startwm.sh.

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[BloodyIron]

How hard do you see this being to implement?

[ben-cohen]

I think this sort of thing is easier with my shared memory change (pull request #819). We could add fields for the Xorg pid (and the wm pid if you like) and the session instance process of xrdp-sesman can set them in session_start_fork(). Then the daemon instance can see those pids to kill them. (Otherwise it will have to walk the processes tree in /proc.)

Btw I think it would be a good idea for each xrdp-sesman session instance (and descendants) to get a new Linux session (SID).

[pieska]

Today i had the problem to kill a bunch of sessions. After looking at the output of 'ps axjf' i wrote a little tool for that:

#include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <sys/types.h> #include <signal.h> void main(int argc, char **argv) { pid_t pid, pgid; pid = atoi(argv[1]); pgid = getpgid(pid); printf("pid = %i, pgid = %i\n", pid, pgid); if(kill(-pgid, SIGTERM) == SUCCESS) { printf("pgid killed\n"); } };

Basically the idea is to get the process group pid of the sesman process and send TERM to every process in this process group. It seems to work, everything started by sesman including sesman was terminated.

sid could work too, but i'm no expert.

[alexmyczko]

I would also like to have xrdp-sesman list me all users having a session.

When I am sure I don't have a session and check with xrdp-sesman -u=me -p -c=list it lists me two sessions, but I'm in no way logged in as that "me" user, invisible with loginctl and who

I have found this useful to check the logs: zcat $(ls -1d /var/log/xrdp-sesman.log*|sort -Vr) |grep "++"

The used xrdp versions are: xrdp 0.9.21.1-1ubuntu1 and xorgxrdp 1:0.9.19-1ubuntu1

also waiting for https://github.com/neutrinolabs/xrdp/issues/1302

[matt335672]

It's on the list of improvements I want to make to xrdp-sesadmin. I want to be able to add some users as admin users who will have visibility of all xrdp sessions.

#2745 (which fixes #1302) will be merged as soon as we've got GFX working reliably. That's a main priority for us at the moment.

[alexmyczko]

i've got some loginctl interface with a xrdpctl, if you're interested?

[matt335672]

Thanks @alexmyczko

By all means post it - it may well be useful to other users.

[alexmyczko]

Ok it wasn't written yet, but this works for me. Enjoy!

https://github.com/alexmyczko/autoexec.bat/blob/master/xrdpctl