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#! /bin/sh
### BEGIN INIT INFO
# Provides:          my-x200
# X-Start-Before:    dhcpcd
# Required-Start:    $remote_fs $local_fs
# Required-Stop:     $remote_fs $local_fs
# X-Stop-After:      xdm
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Starts and stops my-x200
# Description:       Removes whining noise from Thinkpads X200, powers off the wifi on shutdown and optionally backups directories.
### END INIT INFO

# Copyright 2018-2021 Robert Alessi
# Distributed under the terms of the GNU General Public License v2

# Set variables
NAME=my-x200

# Source init functions
. /lib/lsb/init-functions

# Read configuration variable file if it is present
[ -r /etc/default/$NAME ] && . /etc/default/$NAME

x200_cmdfreq="/usr/bin/intel_reg"
pwmfreq="${PWMFREQ_RATE}"
x200_cmdfreq_args="write 0x00061254 $pwmfreq"
autobackup="${conf_autobackup}"
backup_path="${conf_backup_path}"
control_file="${conf_control_file}"
if [ "$use_rsnapshot" = "true" ]
then
    backup_cmd="/usr/bin/rsnapshot"
    backup_args="${rsnapshot_args}"
else
    backup_cmd="/usr/bin/rsync"
    backup_args="-aAX --relative --delete --quiet"
fi

set_pwmfreq() {
    if [ "$is_thinkpad_x200" = "yes" ]
    then
	exec $x200_cmdfreq $x200_cmdfreq_args 2>/dev/null
    fi
}

do_backup() {
    if [ "$autobackup" = "true" ]
    then
	if [ -e "$backup_path"/"$control_file" ]
	then
	    if [ "$use_rsnapshot" = "true" ]
	    then
		$backup_cmd $backup_args
	    else
		$backup_cmd $backup_args $conf_backup_dirs "$backup_path"
	    fi
	fi
    fi
}

do_privacy() {
    if [ "$enable_privacy" = "true" ]
    then
	if [ -n "${wired_interface}" ]
	then
	    printf '0004' > /var/lib/dhcpcd/duid
	    cat /proc/sys/kernel/random/boot_id >> /var/lib/dhcpcd/duid
	    /usr/bin/macchanger -r $wired_interface
	fi
    fi
}

do_refresh() {
    set_pwmfreq
}

do_initbackup() {
    do_backup
}

do_start() {
    do_privacy
    /usr/sbin/rfkill block all
    set_pwmfreq
}

do_stop() {
    /usr/sbin/rfkill block all
    do_backup
}

do_restart() {
    /usr/sbin/rfkill block all
    set_pwmfreq
}

case "$1" in
    start)
	do_start
	;;
    stop)
	do_stop
	;;
    restart|force-reload)
	do_restart
	;;
    refresh)
	do_refresh
	;;
    initbackup)
	do_initbackup
	;;
    *)
	echo "Usage: $NAME {start|stop|refresh|initbackup}" >&2
	exit 3
	;;
esac