cec-remote.sh

#!/bin/bash
#Simple script to control your Raspberry Pi with your TV remote using libcec
#
# Copyleft 2017 by Ignacio Nunez Hernanz <nacho _a_t_ ownyourbits _d_o_t_ com>
# GPL licensed (see end of file) * Use at your own risk!
# Some minor modifications by Matt Read. 
#
# You can set this to be run in your desktop "startup programs", or
# at the last line of /etc/rc.local, just to say a couple options
#
# keys:
#   OK   - launch kodi
#   up   - page up
#   down - page down
#   left - control + shift + tab
#   right - Control + tab
#
# This is just an example to provide ideas, so you should change what each button does.
#

export DISPLAY=:0    # Ensure we're using the main HDMI GUI X Session. 
trap "exit" INT           # Allows killing the script with 'Ctrl + C'. 

USER=pi                        # user that will be logged in
OSDCOLOR=red                   # color for xosd messages
MOUSESPEED=50                  # how many pixels a mouse will move on each press
dbg=echo                      # uncomment to just print the command without executing it
VERBOSE=1                      # print echov lines

type cec-client &>/dev/null || { echo "cec-client is required"; echo "sudo apt install cec-utils"; exit; }
type xdotool    &>/dev/null || NOXDOTOOL=#

USR_CMD="su - $USER -c"
_XAUTH="/home/$USER/.Xauthority"

function          d(){ eval "$NOXDOTOOL $@"                                            ; }
function      echov(){ [[ "$VERBOSE" == "1" ]] && echo $@                              ; }
function filter_key(){ grep -q "key pressed: $1 .* duration" <( echo "$2" )            ; }
function mouse_move(){ XAUTHORITY="$_XAUTH" DISPLAY=:0 xdotool mousemove_relative -- $@; }
function mouseclick(){ XAUTHORITY="$_XAUTH" DISPLAY=:0 xdotool click --repeat 2 1      ; }
function    osdecho(){ type osd_cat &>/dev/null && echo "$@" | \
                       XAUTHORITY="$_XAUTH" DISPLAY=:0 osd_cat -ptop -Acenter -c$OSDCOLOR; }

while :; do
  cec-client | while read l; do
    echov $l
    if  filter_key "up" "$l"; then
    xdotool key "Page_Up"
    fi
    if  filter_key "left" "$l"; then
    xdotool key "Control_L+Shift_L+Tab"
    fi
    if  filter_key "down" "$l"; then
    xdotool key "Page_Down"
    fi
    if  filter_key "right" "$l"; then
    xdotool key "Control_L+Tab"
    fi
    if  filter_key "exit" "$l"; then
      $dbg $USR_CMD "pkill -SIGTERM -f lxsession"
    fi
    if  filter_key "play" "$l"; then
      echov   "mouse mode off"
      osdecho "mouse mode off"
      MOUSEMODE=0
    fi
  done
done

# License
#
# This script is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This script is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this script; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
# Boston, MA  02111-1307  USA