#!/bin/sh
#
# Start/Stop the Mixmaster daemon

### BEGIN INIT INFO
# Provides:          mixmaster
# Required-Start:    $local_fs $remote_fs $named $network $time
# Required-Stop:     $local_fs $remote_fs $named $network
# Should-Start:      mail-transport-agent
# Should-Stop:       mail-transport-agent
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Anonymous remailer client and server
# Description:       Mixmaster is the reference implementation
#                    of the type II remailer protocol
#                    which is also called Mixmaster.
### END INIT INFO

set -e

DESC="Mixmaster Daemon"
NAME="mixmaster"
DAEMON="/usr/bin/mixmaster"
ARGS="--daemon --no-ask-passphrase"
USER=mixmaster
GROUP=mixmaster
REMAILCONFIGFILE=/etc/mixmaster/remailer.conf


# whitespace for some grep magic
WS="[ `printf \\\t`]"
WSE="[= `printf \\\t`]"

grep_from_mix() {
	VALUE=`grep "^$WS*$1$WSE" $REMAILCONFIGFILE | tail -n 1 | sed -e "s,^$WS*[a-zA-Z0-9_-]*$WS*\(\|=$WS*\),,"`
}

convert_bool() {
	if [ "$1" = "false" ] ; then
		if [ "$VALUE" = "y" -o "$VALUE" = "Y" ] ; then VALUE="true"; else VALUE="false"; fi
	else
		if [ "$VALUE" = "n" -o "$VALUE" = "n" ] ; then VALUE="false"; else VALUE="true"; fi
	fi;
}


[ -x $DAEMON ] || exit 0
[ -e $REMAILCONFIGFILE ] || exit 0

# ensure pid file directory exists
if [ ! -e /var/run/mixmaster ]; then
    mkdir -m 02775 /var/run/mixmaster
    chown root:mixmaster /var/run/mixmaster
fi

. /lib/lsb/init-functions

case $1 in
  start)
	grep_from_mix REMAIL; convert_bool false;
	if [ ! "$VALUE" = "true" ]; then
		echo "Not starting $DESC: remailer mode not enabled in $REMAILCONFIGFILE."
        log_success_msg "Not starting $DESC: remailer mode not enabled in $REMAILCONFIGFILE."
		exit 0;
	fi

	grep_from_mix PASSPHRASE
	if [ "$VALUE" = "" ]; then
		echo "Not starting $DESC: Passphrase must be set in $REMAILCONFIGFILE." >&2
        log_failure_msg "Not starting $DESC: Passphrase must be set in $REMAILCONFIGFILE."
		exit 1;
	fi
    log_begin_msg "Starting $DESC..." 
    start-stop-daemon --start --quiet --user $USER --chuid $USER:$GROUP --exec $DAEMON -- $ARGS || { log_end_msg 1; exit 1; }
    log_end_msg 0
	;;

  stop)
    log_begin_msg "Stopping $DESC..." 
    start-stop-daemon --stop --quiet --oknodo --pidfile /var/run/mixmaster/mixmaster.pid --user $USER --exec $DAEMON || { log_end_msg 1; exit 1; }
    log_end_msg 0
	;;

  reload|force-reload|restart)
	$0 stop
	sleep 2
	$0 start
	;;

  *)
	echo "Usage: $0 (start|stop|reload|force-reload|restart)" >&2
	exit 1
	;;
esac

exit 0

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