bin/lck

   1 #!/bin/sh
   2
   3 # term lock
   4 if [ -z "$DISPLAY" ]; then
   5         if [ "$OSTYPE" = "freebsd" ]; then
   6                 lock -npv
   7         else
   8                 lock -np
   9         fi
  10         exit
  11 fi
  12
  13 # xorg lock
  14 img=~/tmp/lock.png
  15 if [ -f "$img" ]; then
  16         # rudimentary attempt to prevent multiple locks
  17         # XXX: could block lock and replace with malicious locker to grab password
  18         echo "Lock file exists at '$img', exiting"
  19         exit 1
  20 fi
  21 res="$(xdpyinfo | grep dimensions | awk '{print $2}')"
  22 scale=0.07
  23 ffmpeg -y -loglevel 0 \
  24   -s "$res" -f x11grab -i $DISPLAY -i ~/share/lck/overlay.png \
  25   -filter_complex "
  26     [0]
  27       scale=iw * $scale:ih * $scale,
  28       noise=alls=2,
  29       scale=`echo $res | tr x :`:flags=neighbor,
  30       noise=alls=5,
  31       gblur=8
  32       [composite];
  33     [composite]
  34       [1] overlay=x=(main_w - overlay_w) / 2 + 0.5:
  35                   y=(main_h - overlay_h) / 2
  36       [out]" \
  37   -map "[out]" -vframes 1 "$img"
  38 # pause dunst
  39 pkill -USR1 dunst
  40 i3lock -nefi "$img"
  41 rm "$img"
  42 pkill -USR2 dunst