#!/bin/sh
# $Id: connect.sh,v 1.12 1999/02/03 19:46:28 ghudson Exp $
# Script to get the network up and running from the ramdisk install.

getresp() {
	read resp
	if [ "X$resp" = "X" ]; then
		resp=$1
	fi
}


# Run ifconfig -a and get rid of everything but the name of a real interface
# device. 
intfs=`ifconfig -l | sed -e 's/lo.//g;s/sl.//g;s/ppp.//g;s/strip.//g;s/tun.//g'`

if [ "intfs" = "" ]; then
	echo "No network interfaces found.  If you have a network connection,"
	echo "it wasn't recognized by the kernel.  If you don't have a network"
	echo "connection, you should be using a different installation disk."
	echo "Type 'halt' now to halt your machine."
	exit 1
fi

# Reverse the order of the interfaces so that for cards which detect
# as PnP and ISA, we try the PnP one first. We still wedge the install
# if we get around to trying the ISA-probed version, but this fixes
# the common case of a single 3c509B card.
newints=""
for f in $intfs; do
	newints="$f $newints"
done
intfs="$newints"

echo ""
ifaddr=
while [ "$ifaddr" = "" ]; do
	echo -n "What is this machine's IP address? "
	read ifaddr
done

params=`/etc/athena/netparams -e "$ifaddr"`
if [ $? -eq 1 ]; then
	echo "Our database doesn't have the network configuration information"
	echo "for that address.  You will need to enter the information"
	echo "manually.  Contact your network administrator if you do not know"
	echo "these parameters."

	# Perform IFS magic to seperate IP address into four pieces.
	OLDIFS="$IFS"
	IFS=.
	set -- $ifaddr
	ifA=$1 ifB=$2 ifC=$3 ifD=$4
	IFS="$OLDIFS"

	echo -n "What is your netmask? [0xffffff00] "
	getresp 0xffffff00; ifnetmask="$resp"
	if [ "$ifnetmask" = "0xffff0000" ]; then
		proto_bcast="${ifA}.${ifB}.255.255"
		proto_gateway="${ifA}.${ifB}.0.1"
	else
		proto_bcast="${ifA}.${ifB}.${ifC}.255"
		proto_gateway="${ifA}.${ifB}.${ifC}.1"
	fi
	echo -n "What is your broadcast address? [$proto_bcast] "
	getresp "$proto_bcast"; ifbroadcast="$resp"
	echo -n "What is your gateway address? [$proto_gateway] "
	getresp "$proto_gateway"; ifgateway="$resp"
	on_mitnet=no
else
	set -- $params
	ifnetmask=$1
	ifbroadcast=$3
	ifgateway=$4
	on_mitnet=yes
fi

echo "Netmask: $ifnetmask"
echo "Broadcast address: $ifbroadcast"
echo "Default gateway: $ifgateway"


echo -n "Testing network interfaces... "

ifconfig lo0 inet 127.0.0.1

# Loop through all above interfaces, attempting to ping the gateway address
# on each of them. This will fail miserably if we didn't figure out the
# right gateway...

for i in $intfs ; do
	intf=$i

	# Media types and options.
	medias=`ifconfig -m $intf | sed -n -e 's/.*supported media: //p'`

	if [ "$medias" = manual ]; then
		# No media selection mechanisim. 
		m=
		ifconfig $intf $ifaddr netmask $ifnetmask \
			broadcast $ifbroadcast
		ping -nqc 1 $ifgateway > /dev/null
		pingstat=$?
       		ifconfig $intf down delete
		if [ $pingstat = 0 ]; then
			guess=1
			break 2
		fi
	else		
		for m in $medias; do
			ifconfig $intf $ifaddr netmask $ifnetmask \
				broadcast $ifbroadcast media $m
			ping -nqc 1 $ifgateway > /dev/null
			pingstat=$?
			ifconfig $intf down delete
			if [ $pingstat = 0 ]; then
				guess=1
				break 2
			fi
		done
	fi
	route -q delete $ifgateway
done

if [ "$guess" = "1" ]; then
	if [ "$m" = "" ]; then
		echo "success on interface $intf (default media)"
	else
		echo "success on interface $intf with media $m"
	fi
	intfdef="[$intf] "
	mediadef="[$m] "
else
	intf=""
	ifflags=""
	echo "failed."
fi

resp="xxx"
while ! (expr " $intfs" : ".* $resp" > /dev/null); do
	echo "Ethernet interfaces: $intfs"
	echo -n "Use what ethernet interface? $intfdef"
	getresp "$intf"
done
intf="$resp"

medias=`ifconfig -m $intf | sed -n -e 's/.*supported media: //p'`
if [ "$medias" = manual ]; then
	media=""
else 
	echo "Media types avaliable for $intf: $medias"
	echo -n "Use what media? $mediadef"
	getresp "$m"
	media="$resp"
fi
# Reset

if [ "$m" = "" ]; then
	ifconfig $intf $ifaddr netmask $ifnetmask broadcast $ifbroadcast 
else
	ifconfig $intf $ifaddr netmask $ifnetmask broadcast $ifbroadcast \
		media $m
fi
route add default $ifgateway

# Write some variables to /tmp/vars
cat >> /tmp/vars << EOM
intf="$intf"
ifaddr="$ifaddr"
ifnetmask="$ifnetmask"
ifbroadcast="$ifbroadcast"
ifgateway="$ifgateway"
ifmedia="$media"
EOM

exit 0