Okay, I've found a home brewed script from this page called Waggle Dance it's supposed to do EXACTLY what I want, for EXACTLY the same reasons.
I had a little permissions issue during setting up the time limits for my test account, but I overcame that with sudo -i
I have two issues that I'm hoping someone (I posted to the script writer too) will help me with.
In my test scenario, I gave the user 300 seconds of use. The script then added another 450 in grace time to log off. I watched the clock ticking in the time keeping file but here's the problem(s);
1) None of the warning pop-ups activated (possibly due to allocated time was lower than grace period. I changed grace period to 0 but it had no effect).
2) Once it kicked the test user off, it allowed an immediate re-login to the test account, and another 450 seconds were allowed thereby allowing the test user to login every few minutes. It would be annoying but a determined child would do that all night long.
Could someone have a look at the script and help me modify it so that those problems are fixed please?
Code:
#!/bin/bash
###
# timekpr.sh - simple
# watches gnome sessions and logs them out once the user has exceeded a set, per day limit
# /var/lib/timekpr/$username.time hold a count of seconds user has had a gnome session
# /var/lib/timekpr/$username hold the daily allowed seconds for the user
#
# you may need to install notify-send with: $apt-get install libnotify-bin
#
# Copyright 2008 Chris Jackson <chris@91courtstreet.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# See <http://www.gnu.org/licenses/>.
#
default_limit=87000 #all day
grace_period=450
poll_time=20
#Ubuntu uses alternatives so we look for x-session-manager instead of gnome-session
SESSION_MANAGER=x-session-manager
# get the usernames and PIDs of sessions
while(true); do
sleep $poll_time
pidlists=$( ps --no-heading -fC $SESSION_MANAGER | awk 'BEGIN{ FS=" " } { print $1 "," $2 }' )
for pidlist in $pidlists; do
# split username and pid - FIXME - I bet this would be faster with bash arrays and substitution
username=$( echo $pidlist | awk 'BEGIN{ FS=","} { print $1}' )
pid=$( echo $pidlist | awk 'BEGIN{ FS=","} { print $2}' )
if [[ ! -e "/var/lib/timekpr/$username" ]]
then
echo $default_limit > /var/lib/timekpr/$username
fi
# if the time file is missing or was last touched yesterday, start over
if [[ -e "/var/lib/timekpr/$username.time" && `( stat -c '%z' /var/lib/timekpr/$username.time|cut -c9,10 )` == `date +%d` ]]
then
#add $poll_time seconds to it
timekpr=$(( `cat /var/lib/timekpr/$username.time` + $poll_time ))
echo $timekpr > /var/lib/timekpr/$username.time
else
timekpr=$poll_time
echo $timekpr > /var/lib/timekpr/$username.time
fi
echo $username, $pid, $timekpr
if [[ $timekpr -gt `cat /var/lib/timekpr/$username` ]]
then
## get the display and xauthority used by out session manager
UDISPLAY=`grep -z DISPLAY \
/proc/$pid/environ | sed -e 's/DISPLAY=//'`
XAUTHORITY=`grep -z XAUTHORITY \
/proc/$pid/environ | sed -e 's/XAUTHORITY=//'`
# find DBUS session bus for this session
DBUS_SESSION_BUS_ADDRESS=`grep -z DBUS_SESSION_BUS_ADDRESS \
/proc/$pid/environ | sed -e 's/DBUS_SESSION_BUS_ADDRESS=//'`
# use it - give a warning, then another one 1/2 way through grace_period
XAUTHORITY="$XAUTHORITY" DISPLAY="$UDISPLAY" DBUS_SESSION_BUS_ADDRESS="$DBUS_SESSION_BUS_ADDRESS" \
notify-send --icon=gtk-dialog-warning --urgency=critical -t 30000 "Daily Time Limit" "Your session time is about to expire! You have $grace_period sec. to save your work and logout."
sleep $(($grace_period/2)) # FIXME: this gives other sessions a free grace_period added to their accounting
XAUTHORITY="$XAUTHORITY" DISPLAY="$UDISPLAY" DBUS_SESSION_BUS_ADDRESS="$DBUS_SESSION_BUS_ADDRESS" \
notify-send --icon=gtk-dialog-warning --urgency=critical -t 30000 "Daily Time Limit" "Your session time is about to expire! You have $(($grace_period/2)) sec. to save your work and logout."
sleep $(($grace_period/2)) # FIXME: this gives other sessions a free grace_period added to their accounting
XAUTHORITY="$XAUTHORITY" DISPLAY="$UDISPLAY" DBUS_SESSION_BUS_ADDRESS="$DBUS_SESSION_BUS_ADDRESS" \
notify-send --icon=gtk-dialog-warning --urgency=critical -t 10000 "Shutting Down" "Shutting down session ($pid) now!"
# FIXME - should really check to see if user has logged out yet
sleep 10
kill -HUP $pid #this is a pretty bad way of killing a gnome-session, but we warned 'em
## uncomment the following to brutally kill all of the users processes
sleep 10
pkill -u $username
## killing gnome-session should be more like:
#DISPLAY=":0" XAUTHORITY="/tmp/.gdmEQ0V5T" SESSION_MANAGER="local/wretched:/tmp/.ICE-unix/$pid" su -c 'gnome-session-save --kill --silent' $username
## but this can still leave processes to cleanup - plus it's not easy to get SESSION_MANAGER
fi
done
done
Originally Posted by .nedberg
Adv Reply
so I just told it to make one. I'm glad you jumped in and fixed it up.
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