#
#   /etc/rc.early
#
#   This is called by /etc/rc.
#
#   We are using this script to try to detect out network
#   environment, and set some variables appropriately.
#

#######################################################################

IFACE="rl0"

NETWORKS="daheim friend office"

ADDR_daheim=192.168.1.12
MASK_daheim=255.255.255.0
TEST_daheim=192.168.1.1

ADDR_friend=192.168.2.12
MASK_friend=255.255.255.0
TEST_friend=192.168.2.1

ADDR_office=10.20.30.40
MASK_office=255.255.255.0
TEST_office=10.20.30.1

#######################################################################

TestNetwork()
{
	#   $1 == my IP address
	#   $2 == my netmask
	#   $3 == test IP address (e.g. gateway)

	ifconfig $IFACE inet $1 netmask $2
	ping -c 3 -i 0.1 -t 1 -r -n $3 > /dev/null
	RESULT=$?
	ifconfig $IFACE down delete
	return $RESULT
}

echo ""
echo "Detecting local network ..."

ifconfig $IFACE down delete 2> /dev/null
route flush
WHERE=offline
for NET in $NETWORKS $NETWORKS; do
	eval ADDR=\$ADDR_$NET
	eval MASK=\$MASK_$NET
	eval TEST=\$TEST_$NET
	if TestNetwork $ADDR $MASK $TEST; then
		WHERE=$NET
		break
	fi
done

#
#   Special case, if connected directly to the DSL router (PPPoE):
#

if [ "$WHERE" = offline ]; then
	case `ifconfig $IFACE` in
		*"media: Ethernet autoselect (10baseT/UTP)"*"status: active"*)
			echo "Found active 10baseT port, assuming DSL router."
			WHERE=pppoe
			;;
	esac
fi

#
#   Display the result.
#

echo "Local network config:  $WHERE"
echo ""

#
#   Open a sub-shell, so we can use "exit" to bail out.
#
#   Note that we MUST not use "exit" otherwise, because
#   /etc/rc sources us!  Using "exit" effectively would
#   abort /etc/rc!
#

(
	#
	#   Make sure that the root file system is
	#   clean and mounted read/write.
	#

	case ${bootmode} in
		autoboot)
			fsck -p / || {
				error_code=$?
				echo "CANNOT REMOUNT ROOT FILE SYSTEM READ-WRITE:"
				echo "\"fsck -p /\" FAILED!!!"
				exit $error_code
			}
			;;
	esac
	mount -u -o rw / || {
		error_code=$?
		echo "CANNOT REMOUNT ROOT FILE SYSTEM READ-WRITE:"
		echo "\"mount -u -o rw /\" FAILED!!!"
		exit $error_code
	}

	#
	#   Update symlinks:
	#

	sh /etc/rc.setnet "$WHERE"

	#
	#   Re-mount the root file system read-only before
	#   letting /etc/rc go the rest of the way to multi-user.
	#   If we don't do this, "fsck -p" (called by /etc/rc)
	#   will no longer be our friend.
	#

	case ${bootmode} in
		autoboot)
			mount -u -o ro / || {
				error_code=$?
				echo "CANNOT REMOUNT ROOT FILE SYSTEM READ-ONLY:"
				echo "\"mount -u -o ro /\" FAILED!!!"
				exit $error_code
			}
			;;
	esac
)

#
#   Re-read rc.conf files, in case something has changed.
#

if [ -r /etc/defaults/rc.conf ]; then
	. /etc/defaults/rc.conf
	source_rc_confs
elif [ -r /etc/rc.conf ]; then
	. /etc/rc.conf
fi

echo ""

#--