# ISP specific settings
USER='username@isp.domain.name'
PASS='isp-password'
PROTO="pppoa"	# or "pppoe", but "pppoa" seems more reliable
ENCAPS="vc"	# or "llc"
VPI=8		# Australian defaults are 8, 35
VCI=35

# Configure network type
uci set network.wan=interface
uci set network.wan.ifname=nas0
uci set network.wan.proto=$PROTO
uci set network.wan.encaps=$ENC
uci set network.wan.vpi=$VPI
uci set network.wan.vci=$VCI
uci set network.wan.username=$USER
uci set network.wan.keepalive=5,20	# Detect dead link
uci commit network

# Set up PPP password files
echo "\"$USER\" \"*\" \"$PASS\" \"*\"" > /etc/ppp/chap-secrets
chmod 600 /etc/ppp/chap-secrets
ln -sf chap-secrets /etc/ppp/pap-secrets
unset USER
unset PASS

# Fix miniupnpd mapping when PPPoE is in use
sed -i -e 's@^EXTIF=.*$@EXTIF=$(tail -n1 /var/run/ppp-wan.pid 2>/dev/null) ; EXTIF=${EXTIF:-$(uci get network.wan.ifname)}@' /usr/bin/iptables_init.sh

# Set up a process to monitor the ADSL and ensure PPP stays up
sed -i -e '/ppp-watch$/d' /etc/inittab
cat << EOM > /etc/ppp-watch
#!/bin/sh
while [ 1 ]
do
	MODEM_STATUS=\$(cat /proc/avalanche/avsar_modem_training 2> /dev/null | head -n1)
	if [ "x\$MODEM_STATUS" != "xSHOWTIME" ]; then
		sleep 2
		continue
	fi

	if ! kill -0 \`head -n1 /var/run/ppp-wan.pid 2>/dev/null\` 2> /dev/null
	then
		ifup wan
	fi
	sleep 120
done
EOM
chmod 755 /etc/ppp-watch
echo "::respawn:/etc/ppp-watch" >> /etc/inittab