a screen locker for use with xautolock which enables locking without password when connected to home wifi

screenlock.sh

#!/bin/sh

#
# example usage:
# xautolock -locker /full/path/to/screenlock.sh -corners 00-+ -detectsleep
#
# depends on xssstate which is part of suckless-tools: 
# http://tools.suckless.org/ or 
# apt-get suckless-tools on debian
#

simple_lock () {
  # lock w/o password & don't exit until screen save turns off to comply with
  # xautolock expected locker behaviour
  xset s activate
  sleep 1
  while [ $(xssstate -s) = "on" ]; do
    sleep 1
  done
}

passwd_lock () {
  # use whatever you like here
  i3lock --dpms --color=222222
}

connection=$(nmcli d show wlan0 | grep GENERAL.CONNECTION | awk '{print $2}')

if [ "$connection" = "my_ssid" ] ; then
  simple_lock
else
  passwd_lock
fi