Make playbook more general: Split into general and specific roles, use variables.

roles/lmn_fvs/files/pwroff

@@ -0,0 +1,47 @@
+#!/bin/bash
+#
+# logout idle users and shutdown machine
+#
+set -eu
+
+action="systemctl poweroff"
+uptime=$(cat /proc/uptime | cut -f1 -d.)
+maxidle=3600
+
+u=($(loginctl list-users --no-legend  | sort -hr | head -1))
+una=${u[1]:-''}
+uid=${u[0]:-''}
+
+talk2dbus() {
+    local display=":$(ls /tmp/.X11-unix/* | sed 's#/tmp/.X11-unix/X##' | head -n 1)"
+    sudo -u $una DISPLAY=$display \
+	 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$uid/bus "$@" 2>/dev/null
+}
+
+########
+
+## shutdown if nobody is loged in:
+if [[ -z "$una" ]] || [[ $uid -lt 1000 ]] ; then
+  exec $action
+fi
+
+# FIXME: find idle time independent of running screensaver
+if ! t=$(talk2dbus qdbus org.kde.screensaver /ScreenSaver GetActiveTime) ; then
+    echo "No graphical logins found."
+else
+    idle=$(( t / 1000 ))
+    if [[ $idle -gt $maxidle ]] ; then
+        talk2dbus notify-send -i system-shutdown -u critical -a 'Important System Information' \
+	          'Please log out, the system will shut down soon!' \
+	          'There has been no activity for too long.'
+        ## shutdown:
+        #talk2dbus qdbus org.kde.ksmserver /KSMServer logout 1 2 0
+        ## logout:
+        talk2dbus qdbus org.kde.ksmserver /KSMServer logout 1 0 0
+        echo "Log-out user $una after being idle for $idle seconds."
+    else
+        echo "The user $una has been idle for $idle seconds."
+    fi
+fi
+
+#w -s | grep tty | sed "s/[[:space:]]\+/ /g" | cut -f4 -d ' '