kiosk-browser-control

#!/bin/bash

function usage {
    echo "Usage: $0 <start|stop|status|restart|evening|morning|interactive>"
    exit 1
}

[[ -z "$1" || "$*" == *-h* ]] && usage


if [[ "$USER" != root && $(id -u) != "0" ]] ; then
    # restart as root
    exec sudo -i "$(readlink -f "$0")" "$@"
    echo "Need sudo permissions!"
    exit 1
fi

function is_pi {
    type -p tvservice &>/dev/null
}

function start {
    invoke-rc.d nodm start 
}

function stop {
    invoke-rc.d nodm stop
    echo -n "Waiting for kiosk-browser processes to terminate "
    while status ; do echo -n . ; sleep 3 ; done
    echo " OK"
}

function status {
    if pstree -paul kiosk-browser 2>/dev/null ; then
        return 0
    else
        echo "kiosk-browser not running" 1>&2
        return 1
    fi
}

function restart {
    stop
    sleep 1
    start
}

function interactive {
    status >/dev/null || return 1

    homedir=( /tmp/kiosk-browser.HOME* )
    if [[ "$homedir" != "${homedir[*]}" ]] ; then
        echo "ERROR: Found more than one kiosk-browser Home Directory: ${homedir[*]}" 1>&2
        echo "       Please clean up the stale directories and try again" 1>&2
        return 1
    fi
    
    echo "Launching interactive Shell in current kiosk-browser session."
    sudo -u kiosk-browser -i env HOME=$homedir DISPLAY=:0 bash -i
}

function evening {
    stop
    is_pi && tvservice -o || vbetool dpms off
}

function morning {
    # this apparently does not work reliably, so we reboot if on RPi
    # is_pi && tvservice -p || vbetool dpms on
    is_pi && reboot || vbetool dpms on
    sleep 2
    start
}


case "$1" in
    (start|stop|status|restart|interactive) "$1" ;;
    (evening|morning) [[ -e /tmp/kiosk-browser-disable-morning-evening ]] || "$1" ;;
    (*) usage ;;
esac