#!/bin/sh

###
 #
 # FreeWLAN Addons - http://www.freewlan.info
 #
 # This Script is based on work by Dema - see http://fonblog.wordpress.com/
 #
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; either version 2
 # of the License, or (at your option) any later version.
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 # MA  02110-1301, USA
 #
 # http://www.gnu.org/copyleft/gpl.html
 #
###

. /etc/functions.sh

config_load router
config_get mode mode mode
if [ "$mode" -eq "2" ]; then
	config_get rssid mode rssid
	config_get key mode key
	config_get enc mode enc
	config_get dhcp mode dhcp
	config_get ip mode ip
	config_get netmask mode netmask
	config_get gateway mode gateway
	config_get dns mode dns
	config_get ssid mode ssid
	config_get bridge mode bridge
	config_get oldwan mode oldwan
	
	# stop daemons
	killall -9 udhcpc
	killall dnsmasq
	killall chilli
	killall wpa_supplicant
		
	# flush netfilter tables
	iptables -F
	iptables -P INPUT ACCEPT
	iptables -P OUTPUT ACCEPT
	iptables -P FORWARD ACCEPT
	iptables -t nat -F
	
	# create new VAP devices
	wlanconfig ath0 destroy
	wlanconfig ath1 destroy
	
	# VAP ath0 as station managed
	wlanconfig ath0 create wlandev wifi0 wlanmode sta nosbeacon
	ifconfig ath0 up
	
	case "$enc" in
		wpa|WPA)
			iwpriv ath0 wpa 3
			iwconfig ath0 essid "$rssid"
			wpa_supplicant -iath0 -c/etc/wpa_supplicant.conf -B -d
			;;
		wep|WEP)
			iwconfig ath0 key "$key"
			iwpriv ath0 authmode 2
			iwconfig ath0 essid "$rssid"
			;;
		*)
			iwconfig ath0 essid "$rssid"
			;;
	esac
	
	case "$dhcp" in
		1)
			udhcpc -i ath0 -R
			ln -sf /tmp/resolv.conf /etc/resolv.conf
			;;
		
		*)
			ifconfig ath0 $ip netmask $netmask up
			echo "nameserver $dns" > /etc/resolv.conf
			route add default gw $gateway
			;;
	esac
	
	# VAP ath1 as Access Point
	wlanconfig ath1 create wlandev wifi0 wlanmode ap
	iwconfig ath1 essid FON_"$ssid"
	ifconfig ath1 192.168.20.1 netmask 255.255.255.0 up
	
	# eth0 as Bridge
	if enabled $bridge; then
		ifconfig eth0 192.168.11.1 netmask 255.255.255.0 up

		# forwarding between the two subnets
		iptables -t nat -A POSTROUTING -o ath0 -j MASQUERADE
		iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
		
		dnsmasq --conf-file /etc/dnsmasq.repeater
	fi

	# generate chilli.repeater containing right magic and dhcpif
	TMP_C=/tmp/chilli.repeater
	ETC_C=/etc/chilli.repeater
	touch $ETC_C
	touch $TMP_C
	RADIUSSERVER=radius01.fon.com
	RADIUSSECRET=garrafon
	RADIUSADMUSR=chillispot
	RADIUSADMPWD=chillispot
	MAC=$(ifconfig wifi0 | head -n1 | awk '{print $5}'|sed s/:/-/g)
	MAC=${MAC:-fon}
	/usr/sbin/chilli_radconfig \
		-c /dev/null \
		--radiusserver1="$RADIUSSERVER" \
		--radiussecret="$RADIUSSECRET" \
		--adminuser="$RADIUSADMUSR" \
		--adminpasswd="$RADIUSADMPWD" \
		--radiusnasid="$MAC" \
		--dhcpif ath1 \
		> $TMP_C

	[ -n "$(cat $TMP_C)" ] && {
		MD5SUM_TMP=$(md5sum $TMP_C | awk '{ print $1 }')
		MD5SUM_ETC=$(md5sum $ETC_C | awk '{ print $1 }')
		if [ ! "$MD5SUM_TMP" = "$MD5SUM_ETC" ]; then
				 sed -e "s/eth1/ath1/" $TMP_C > $ETC_C
		fi
	}

	chilli --conf /etc/chilli.repeater
fi