#!/bin/bash
# Title:         Infinite Control
# Author:        Didier Stevens (https://DidierStevens.com)
# Version:       0.0.2 2017/09/02
# History:       0.0.1 2017/04/08 start
#                0.0.2 2017/09/02 changed LED colors, added BREAK
#
# Hit the CONTROL key every 10 seconds in an infinite loop,
# while blinking the CYAN LED with every keypress.
#
# Can be used to prevent a machine from sleeping or auto-locking.
#
# Some users have suggested to hit F15 (BREAK) in stead of CTRL.
# This can be done by uncommenting line #INFINITE_KEY=BREAK.
#
# WARNING: Do not type on the machine's keyboard while this script
#          is running, or your keystrokes might become commands,
#          for example CTRL-Q: Quit
#
# Cyan ..............Hitting CONTROL key
# Yellow Blinking ...Sleeping
# Red Blinking.......Wow! We broke out of the infinite while loop!

ATTACKMODE HID

INFINITE_KEY=CTRL
#INFINITE_KEY=BREAK

# Setting MAX_SECONDS will utilize random value
#  else leave blank, "MAX_SECONDS=", to use 
#  FIXED_SECONDS value every time.
# 300 == 5min
MAX_SECONDS=300
FIXED_SECONDS=9

# infinite while loop
while true
do
	LED SPECIAL
	QUACK $INFINITE_KEY
	sleep 1
	LED ATTACK
	# Slight change from original to support "random"
	# delays between key presses.
	if [ ! -z MAX_SECONDS ]; then
		sleep $(($RANDOM % $MAX_SECONDS))
	else
		sleep $FIXED_SECONDS
	fi
done

# this code will never be reached
LED FAIL