screensaver automatic lock with xss-lock

tasks/main.yaml

@@ -45,6 +45,12 @@
     dest: /usr/local/bin/screensaver-start
     mode: 0755
 
+- name: screensaver lock script
+  template:
+    src: screensaver-lock.sh.j2
+    dest: /usr/local/bin/screensaver-lock
+    mode: 0755
+
 - import_role:
     name: dconf-lock
   vars:

templates/screensaver-lock.sh.j2

@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Example locker script -- demonstrates how to use the --transfer-sleep-lock
+# option with a fixed delay to give simple lockers a little bit of time to lock
+# the screen before the system goes the sleep.
+
+## CONFIGURATION ##############################################################
+
+# Command to start the locker (should not fork)
+locker="mate-screensaver-command -l"
+
+# Delay in seconds. Note that by default systemd-logind allows a maximum sleep
+# delay of 5 seconds.
+sleep_delay=1
+
+# Run before starting the locker
+pre_lock() {
+    #mpc pause
+    return
+}
+
+# Run after the locker exits
+post_lock() {
+    return
+}
+
+###############################################################################
+
+pre_lock
+
+# kill locker if we get killed
+trap 'kill %%' TERM INT
+
+if [[ -e /dev/fd/${XSS_SLEEP_LOCK_FD:--1} ]]; then
+    # lock fd is open, make sure the locker does not inherit a copy
+    $locker {XSS_SLEEP_LOCK_FD}<&- &
+
+    sleep $sleep_delay
+
+    # now close our fd (only remaining copy) to indicate we're ready to sleep
+    exec {XSS_SLEEP_LOCK_FD}<&-
+else
+    $locker &
+fi
+
+wait # for locker to exit
+
+post_lock

templates/screensaver-start.sh.j2

@@ -3,6 +3,6 @@
 /usr/local/bin/screensaver-settings
 
 #exec xss-lock -- i3lock -c ff00ff
-xss-lock -- mate-screensaver-command -l &
+xss-lock -l -- /usr/local/bin/screensaver-lock &
 
 exec mate-screensaver