#! /bin/ash

#vars for downloading base configurations 
ff_s='http://fabfi.fablab.af' #fabfi server
ff_dld='/download/software/base_config/2_1/' # dld needs leading and trailing /
ff_u='fabfi' #user
ff_cfg='fabfi-files.tgz'
ec="etc/config/"
i_d="etc/init.d/"
r_d="etc/rc.d/"

#temporary directory for downloaded files
ff_tmp='/tmp/'
ff_tdld='/tmp/setup/' #needs trailing /
ff_td='/tmp/setup/packages/' #needs trailing / expected to be a direct sub of tdld. Tar file defines fabfi_config part
ff_tdo='/tmp/setup/packages_optional/' #needs trailing / expected to be a direct sub of tdld. Tar file defines fabfi_config part
ff_MACEnd=':fa:bf:1f:ab:f1'

#misc constants
ff_cIP=0
ff_dIP=0
ff_wm_abIP="10.102." #needs trailing .
ff_m_abIP="10.101." #needs trailing .
ff_m_cIP="0." #needs trailing .
ff_l_abIP="10.103." #needs trailing .
ff_gw_dIP="1"
default_wep="8bb8d3c8d3d8bb3dffd38db33f"

echo ""
echo "Welcome to the FabFi 2.1 device configuration script."  
sleep 2
echo ""


i="nothing"
until (test "y" == $i || test "n" == $i); do
	echo "Do you need to download config files y/n? (respond y unless you have already download $ff_cfg to $ff_tdld)"
	read i
done

if test "y" == $i; then
	#get tarball for base config files
	echo "Retrieving configuration files with wget"
	mkdir $ff_tdld
	if !(wget $ff_s$ff_dld$ff_cfg -O $ff_tdld$ff_cfg); then
		echo "Could not download config files."
		exit
	fi 
fi


until ((echo $channel | grep "^1[0-1]$")||(echo $channel | grep "^[0-9]$")); do
	echo "Now you must select the wireless channel, it must be the same for all connecting nodes."
	echo "Enter the wireless channel (between 1-11):"
	read channel
done

if test $channel -lt 10; then
	bssid=0$channel$ff_MACEnd
else
	bssid=$channel$ff_MACEnd
fi

until (echo $distance | grep "^[1-9][0-9]*$"); do
	echo "fabfi distance must be a positive integer greater than 0"
	echo "Enter the transmit distance in meters"
	read distance
done 

wep_key="ZzZzzZZ//";
until (echo $wep_key | grep "^[0-9A-fA-F]*$"); do
	echo "Now you need to select a wep key." 
	echo "Select a wep key to use (type 'd' for default):"
	read wep_key
	if [ $wep_key == "d" ]; then
		wep_key=$default_wep;
	fi;
done 

location="////";
until (echo $location | grep "^[0-9a-zA-z\-\_]*$"); do
	echo "What is your location?  NO SPACES or special characters:"
	read location
done 

until ((echo $fabfi_num | grep "^1[0-9][0-9]$")||(echo $fabfi_num | 
  grep "^2[0-4][0-9]$")||(echo $fabfi_num | grep "^25[0-4]$")||(echo $fabfi_num | grep "^[1-9][0-9]\{0,1\}$")); do
	echo "Enter the number of your FabFi (must be in range 1-254):"
	read fabfi_num
done 

let m_dIP="$fabfi_num+$ff_dIP"
echo MESH and WIFIMESH Class D IP is: $meshing_dIP

let lan_cIP="$fabfi_num+$ff_cIP" 
echo LAN Class C IP is: $lan_cIP


#unzip config files to temp dir. 
tar -C $ff_tdld -xzf $ff_tdld$ff_cfg

cp -rf ${ff_tdld}lib/ /
cp -f ${ff_tdld}${ec}network /${ec}
cp -f ${ff_tdld}${ec}wireless /${ec}
cp -f ${ff_tdld}${ec}httpd /${ec}
cp -f ${ff_tdld}${ec}dhcp /${ec}
cp -f ${ff_tdld}${ec}system /${ec}
cp -f ${ff_tdld}etc/opkg.conf.offline /etc/opkg.conf

echo "Replacing wget temporarily. If you quit now, you'll have to restore it manually from /usr/bin/wget-real"
# Copy wget for opkg-spoofing purposes
cp -df /usr/bin/wget /usr/bin/wget-real
rm /usr/bin/wget
echo '#!/bin/ash' > /usr/bin/wget-opkg
echo 'cp $4 $3' >> /usr/bin/wget-opkg
chmod ugo+x /usr/bin/wget-opkg
ln -s /usr/bin/wget-opkg /usr/bin/wget


echo "Installing base software"
### Doing it the old fashioned way....
opkg update
opkg -force-reinstall install luci-app-olsr luci-app-firewall luci-app-qos mini-snmpd
opkg -force-reinstall install olsrd-luci-mod-nameservice olsrd-luci-mod-dyn-gw
opkg -force-reinstall install iperf iptables-mod-extra
opkg -force-reinstall install nodogsplash
opkg -force-reinstall install wl 

rm -rf /etc/nodogsplash/htdocs/images/
#rm /etc/nodogsplash/htdocs/images/wifidog.png
rm /${i_d}/nodogsplash.init
cp -df ${ff_tdld}www/index.html /www/
cp -df ${ff_tdld}www/images /www/
cp -f ${ff_tdld}${ec}olsrd /${ec}
cp -f ${ff_tdld}${ec}firewall /${ec}
cp -f ${ff_tdld}${ec}qos /${ec}
cp -rf ${ff_tdld}etc/fabfi-scripts/ /etc/
cp -f ${ff_tdld}etc/crontabs/root /etc/crontabs/
cp -f ${ff_tdld}etc/firewall.user /etc/
cp -f ${ff_tdld}${i_d}custom-user-startup /${i_d}
cp -df ${ff_tdld}${r_d}S98customuserstartup /${r_d}
cp -df ${ff_tdld}${r_d}S50olsrd /${r_d}
cp -df ${ff_tdld}${r_d}S65mini_snmpd /${r_d}
cp -df ${ff_tdld}${r_d}S66nodogsplash /${r_d}
cp -f ${ff_tdld}${ec}luci_ethers /${ec}
cp -f ${ff_tdld}${ec}luci_hosts /${ec}
cp -f ${ff_tdld}${ec}mini_snmpd /${ec}
cp -f ${ff_tdld}${i_d}mini_snmpd /${i_d}
cp -f ${ff_tdld}etc/passwd /etc/
cp -f ${ff_tdld}etc/nodogsplash/nodogsplash.conf /etc/nodogsplash/
rm  /etc/nodogsplash/htdocs/splash.html
cp -df ${ff_tdld}etc/nodogsplash/htdocs/splash.html /etc/nodogsplash/htdocs/
cp -df ${ff_tdld}etc/nodogsplash/splash.base /etc/nodogsplash/
cp -df ${ff_tdld}etc/nodogsplash/splash-auth.base /etc/nodogsplash/
cp -rf ${ff_tdld}/etc/nodogsplash/htdocs/images/ /etc/nodogsplash/htdocs/
cp -f ${ff_tdld}etc/nodogsplash/htdocs/infoskel.html /etc/nodogsplash/htdocs/
ln -s /var/etc/ffstatus.log /www/ffstatus.log
rm /etc/hosts
cp -df ${ff_tdld}etc/hosts /etc/
cp -f ${ff_tdld}${i_d}nodogsplash /${i_d}

# Restoring wget..
rm /usr/bin/wget
cp -df /usr/bin/wget-real /usr/bin/wget
rm /usr/bin/wget-real
rm /usr/bin/wget-opkg
cp -f ${ff_tdld}etc/opkg.conf.online /etc/opkg.conf
echo "wget has been restored to normal."
                  
ns_index=`uci show olsrd | grep -e 'olsrd\.@LoadPlugin\[.*\]\.library=olsrd_nameservice\.so' | 
awk 'FS="[";{print $2}' | awk 'FS="]";{print $1};' | tail -1`

#set config variables
uci set system.@system[0].hostname=fabfi${fabfi_num}
uci set network.lan.ipaddr=${ff_l_abIP}${lan_cIP}.${ff_gw_dIP}
uci set network.mesh.ipaddr=$ff_m_abIP${ff_m_cIP}${m_dIP}
uci set network.wifimesh.ipaddr=$ff_wm_abIP${ff_m_cIP}${m_dIP}
uci set olsrd.@Hna4[0].netaddr=${ff_l_abIP}${lan_cIP}.0
uci set olsrd.@LoadPlugin[${ns_index}].name=fabfi${fabfi_num}
uci set mini_snmpd.@mini_snmpd[0].location=$location

echo Hostname = `uci get system.@system[0].hostname`
echo ""
echo LAN IP = `uci get network.lan.ipaddr`
echo MESH IP = `uci get network.mesh.ipaddr`
echo WIFIMESH IP = `uci get network.wifimesh.ipaddr`

echo ""
uci set wireless.wl0.channel=$channel
uci set wireless.@wifi-iface[0].bssid=$bssid
uci set wireless.@wifi-iface[0].ssid=fabfi${channel}
uci set wireless.wl0.distance=$distance
uci set wireless.@wifi-iface[0].key=$wep_key

echo Wireless channel = `uci get wireless.wl0.channel`
echo Wireless distance = `uci get wireless.wl0.distance`
echo Wireless WEP key = `uci get wireless.@wifi-iface[0].key`
sleep 2

uci commit

echo ""
echo "Choose a root password"
passwd root

#hack so I don't have to keep fixing setrouter in the AP and STA tarballs.
cp ${ff_tmp}fabfi-setup /etc/fabfi-scripts/fabfi-setup

echo ""
echo Configuration is complete!
echo You must reboot your router for the changes to take effect.
echo POWER DOWN YOUR ROUTER WHEN THIS SCRIPT EXITS
echo ""
sleep 4