#!/bin/sh

#

### BEGIN INIT INFO

# Provides: dhcrelay

# Default-Start:

# Default-Stop:

# Should-Start:

# Required-Start: $network

# Required-Stop:

# Short-Description: Start and stop the DHCP relay server

# Description: dhcrelay provides the Dynamic Host Configuration Protocol (DHCP)

#              relay server.  This is required when your DHCP server is on

#              another network segment from the clients.

### END INIT INFO

#

# The fields below are left around for legacy tools (will remove later).

#

# chkconfig: - 65 35

# description: dhcrelay provides a relay for Dynamic Host Control Protocol.

# processname: dhcrelay

# # pidfile: /var/run/dhcrelay.pid

. /etc/init.d/functions

RETVAL=0

prog=dhcrelay

dhcrelay=/usr/sbin/dhcrelay

lockfile=/var/lock/subsys/dhcrelay

pidfile=/var/run/dhcrelay.pid

conf=/etc/sysconfig/dhcrelay

# The dhcrelay daemon uses the sysconfig file for configuration information.

# There is no native configuration file for this program and you must specify

# its settings on the command line.

[ -f /etc/sysconfig/dhcrelay ] && . /etc/sysconfig/dhcrelay

configtest() {

    [ -x $dhcrelay ] || exit 5

    [ -f $conf ] || exit 6

    [ -z "$DHCPSERVERS" ] && exit 6

    RETVAL=0

    return $RETVAL

}

start() {

    [ -x $dhcrelay ] || exit 5

    [ -f $conf ] || exit 6

    pidofproc $prog >/dev/null 2>&1

    RETVAL=$?

    [ $RETVAL -eq 0 ] && return $RETVAL

    echo -n $"Starting $prog: "

    daemon $dhcrelay $([ -n "$INTERFACES" ] && for int in $INTERFACES ; do echo -n " -i $int" ; done) $DHCPSERVERS 2>/dev/null

    RETVAL=$?

    echo

    [ $RETVAL -eq 0 ] && touch $lockfile

    return $RETVAL

}

stop() {

    pidofproc $prog >/dev/null 2>&1

    if [ $? -ne 0 ]; then

        RETVAL=7

        return $RETVAL

    fi

    echo -n $"Shutting down $prog: "

    killproc $prog -TERM

    RETVAL=$?

    echo

    [ $RETVAL = 0 ] && rm -f $lockfile

    return $RETVAL

}

if [ ! -x $dhcrelay ]; then

    RETVAL=5

    exit $RETVAL

fi

if [ $# -gt 1 ]; then

    RETVAL=2

    exit $RETVAL

fi

case "$1" in

    start)

        start

        RETVAL=$?

        ;;

    stop)

        stop

        RETVAL=$?

        ;;

    restart|force-reload)

        stop && start

        RETVAL=$?

        ;;

    try-restart|reload)

        RETVAL=3

        ;;

    condrestart)

        if [ -f $lockfile ]; then

            stop && start

            RETVAL=$?

        fi

        ;;

    configtest)

        configtest

        RETVAL=$?

        ;;

    status)

        status $prog

        RETVAL=$?

        ;;

    *)

        echo $"Usage: $0 {start|stop|restart|condrestart|configtest|status}"

        RETVAL=3

        ;;

esac

exit $RETVAL