#! /bin/sh
#
# postsrsd
#               start/stop the postsrsd daemon for Postfix
#
### BEGIN INIT INFO
# Provides:          postsrsd
# Required-Start:    $syslog $network $remote_fs
# Required-Stop:     $syslog $network $remote_fs
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: Start/stop the postsrsd daemon
# Description:       postsrsd offers Sender Rewriting Scheme support for Postfix
### END INIT INFO

set -e

PATH=/sbin:/bin:/usr/sbin:/usr/bin
DAEMON=/usr/sbin/postsrsd
NAME=postsrsd
DESC="Postfix Sender Rewriting Scheme daemon"

PIDFILE=/var/run/$NAME.pid
SCRIPTNAME=/etc/init.d/$NAME

# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0

. /lib/lsb/init-functions

# Default configuration
SRS_FORWARD_PORT=10001
SRS_REVERSE_PORT=10002
SRS_DOMAIN=`postconf -h mydomain || true`
SRS_SECRET=/etc/postsrsd.secret
SRS_SEPARATOR==
SRS_HASHLENGTH=4
SRS_HASHMIN=4
SRS_EXTRA_OPTIONS=
RUN_AS=nobody
CHROOT=/usr/lib/postsrsd
SRS_LISTEN_ADDR=127.0.0.1
SRS_EXCLUDE_DOMAINS=

# Read config file if it is present
if [ -r /etc/default/$NAME ]
then
	. /etc/default/$NAME
fi

test -r "$SRS_SECRET" -a -n "$SRS_DOMAIN" || exit 1

ret=0

case "$1" in
  start)
	log_daemon_msg "Starting $DESC" "$NAME"
	if start-stop-daemon --start --oknodo --quiet \
		--pidfile $PIDFILE \
		--name $NAME \
		--startas $DAEMON \
		-- $SRS_EXTRA_OPTIONS -f "$SRS_FORWARD_PORT" -r "$SRS_REVERSE_PORT" \
		   -d "$SRS_DOMAIN" -s "$SRS_SECRET" -a "$SRS_SEPARATOR" \
		   -n "$SRS_HASHLENGTH" -N "$SRS_HASHMIN" -u "$RUN_AS" -p "$PIDFILE" \
		   -c "$CHROOT" -l "$SRS_LISTEN_ADDR" -D -X"$SRS_EXCLUDE_DOMAINS"
	then
	    log_end_msg 0
	else
	    ret=$?
	    log_end_msg 1
	fi
	;;
  stop)
	log_daemon_msg "Stopping $DESC" "$NAME"
	if start-stop-daemon --stop --oknodo --quiet \
		--pidfile $PIDFILE --exec $DAEMON --name $NAME
	then
	    log_end_msg 0
	else
	    ret=$?
	    log_end_msg 1
	fi
        rm -f $PIDFILE
	;;
  reload|force-reload|restart)
	$0 stop
	$0 start
	ret=$?
	;;
  status)
        log_daemon_msg "postsrsd is running"
        if [ -s $PIDFILE ]; then
            PID=`cat $PIDFILE`
            if kill -0 "$PID" 2>/dev/null; then
                log_end_msg 0
            else
                log_end_msg 1
            fi
        else
            log_end_msg 1
        fi
        ;;
  *)
	echo "Usage: $SCRIPTNAME {start|stop|restart|reload|force-reload|status}" >&2
	exit 1
	;;
esac

exit $ret