HardenedBSD/etc/pccard_ether

#!/bin/sh -
#
# $FreeBSD$
#
# pccard_ether interfacename [start|stop] [ifconfig option]
#
# example: pccard_ether ep0 start -link0
#

stop_dhcp() {
	if [ -s /var/run/dhclient.${interface}.pid ]; then
		pidfile="/var/run/dhclient.${interface}.pid"
	elif [ -s /var/run/dhcpc.${interface}.pid ]; then
		pidfile="/var/run/dhcpc.${interface}.pid"
	else
		return
	fi
	kill `cat ${pidfile}`
	rm -f ${pidfile}
}

start_dhcp() {
	stop_dhcp
	if [ -x "${dhcp_program}" ]; then
		if [ `basename ${dhcp_program}` = "dhclient" ]; then
			pidfile="/var/run/dhclient.${interface}.pid"
			dhcp_flags="${dhcp_flags} -pf ${pidfile}"
		fi
		${dhcp_program} ${dhcp_flags} ${interface}
	else
		echo "${dhcp_program}: DHCP client software not available"
	fi
}

# Suck in the configuration variables
#
if [ -r /etc/defaults/rc.conf ]; then
	. /etc/defaults/rc.conf
	source_rc_confs
elif [ -r /etc/rc.conf ]; then
	. /etc/rc.conf
fi

interface=$1
shift
startstop=$1
shift

case ${pccard_ifconfig} in
[Nn][Oo] | '')
	expr "${removable_interfaces}" : ".*${interface}" > /dev/null || exit 0
	;;
*)
	# Backward compatible
	eval ifconfig_${interface}=\${pccard_ifconfig}
	;;
esac

case ${startstop} in
[Ss][Tt][Aa][Rr][Tt] | '')
	if [ -r /etc/start_if.${interface} ]; then
		. /etc/start_if.${interface}
	fi

	eval ifconfig_args=\$ifconfig_${interface}
	case ${ifconfig_args} in
	[Nn][Oo] | '')
		;;
	[Dd][Hh][Cc][Pp])
		# Start up the DHCP client program
		start_dhcp
		;;
	*)
		# Do the primary ifconfig if specified
		ifconfig ${interface} ${ifconfig_args} $*

		# Check to see if aliases need to be added
		alias=0
		while :
		do
			eval ifx_args=\$ifconfig_${interface}_alias${alias}
			if [ -n "${ifx_args}" ]; then
				ifconfig ${interface} ${ifx_args} alias
				alias=`expr ${alias} + 1`
			else
				break;
			fi
		done

		# Do ipx address if specified
		eval ifx_args=\$ifconfig_${interface}_ipx
		if [ -n "${ifx_args}" ]; then
			ifconfig ${interface} ${ifx_args}
		fi

		# Add default route into $static_routes
		case ${defaultrouter} in
		[Nn][Oo] | '')
		        ;;
		*)
			static_routes="default ${static_routes}"
			route_default="default ${defaultrouter}"
			;;
		esac

		# Add private route for this interface into $static_routes
		eval ifx_routes=\$static_routes_${interface}
		if [ -n "${ifx_routes}" ]; then
			static_routes="${ifx_routes} ${static_routes}"
		fi

		# Set up any static routes if specified
		if [ -n "${static_routes}" ]; then
			for i in ${static_routes}; do
				eval route_args=\$route_${i}
				route add ${route_args}
			done
		fi
		;;
	esac

	# IPv6 setup
	case ${ipv6_enable} in
	[Yy][Ee][Ss])
		case ${ipv6_gateway_enable} in
		[Yy][Ee][Ss])
			;;
		*)
			sysctl -w net.inet6.ip6.forwarding=0
			sysctl -w net.inet6.ip6.accept_rtadv=1
			ifconfig ${interface} up
			rtsol ${interface}
			;;
		esac
		;;
	esac
	;;
# Stop the interface
*)
	if [ -r /etc/stop_if.${interface} ]; then
		. /etc/stop_if.${interface}
	fi

	eval ifconfig_args=\$ifconfig_${interface}
	case ${ifconfig_args} in
	[Nn][Oo] | '')
	        ;;
	[Dd][Hh][Cc][Pp])
		# Stop the DHCP client for this interface
		stop_dhcp
		;;
	*)
		# Delelte static route if specified
		eval ifx_routes=\$static_routes_${interface}
		if [ -n "${ifx_routes}" ]; then
			for i in ${ifx_routes}; do
				eval route_args=\$route_${i}
				route delete ${route_args}
			done
		fi

		# Delete aliases if exist
		alias=0
		while :
		do
			eval ifx_args=\$ifconfig_${interface}_alias${alias}
			if [ -n "${ifx_args}" ]; then
				ifconfig ${interface} ${ifx_args} alias delete
				alias=`expr ${alias} + 1`
			else
				break;
			fi
		done
		;;
	esac

	# Remove the network interface and cleaning ARP table
	ifconfig ${interface} delete
	arp -d -a

	# Clean the routing table
	case ${removable_route_flush} in
	[Nn][Oo])
	        ;;
	*)	
		# flush beforehand, just in case....
		route -n flush
		;;
	esac
	;;
esac