#!/bin/sh

# Set REJECT as default rule if an interface is not in a zone
uci -q batch <<-EOF >/dev/null
	set firewall.@defaults[0].input='REJECT'
	set firewall.@defaults[0].output='REJECT'
	set firewall.@defaults[0].forward='REJECT'
EOF


if [ "$(uci -q get firewall.@zone[2].name)" = "vpn" ]; then
	uci -q batch <<-EOF >/dev/null
		del firewall.@zone[2]
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.@zone[1].name)" = "wan" ]; then
	uci -q batch <<-EOF >/dev/null
		rename firewall.@zone[1]="zone_wan"
		commit firewall
	EOF
fi
if [ "$(uci -q show firewall.zone_wan | grep wan6)" != "" ] && [ "$(uci -q get network.wan6)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		del_list firewall.zone_wan.network="wan6"
		commit firewall
	EOF
fi

if [ "$(uci -q show firewall.zone_wan | grep wan)" != "" ] && [ "$(uci -q get network.wan)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		del_list firewall.zone_wan.network="wan"
		commit firewall
	EOF
fi
if [ "$(uci -q get firewall.@zone[0].name)" = "lan" ]; then
	uci -q batch <<-EOF >/dev/null
		rename firewall.@zone[0]="zone_lan"
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.zone_vpn)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.zone_vpn=zone
		set firewall.zone_vpn.name=vpn
		add_list firewall.zone_vpn.network=omrvpn
		add_list firewall.zone_vpn.network=omr6in4
		set firewall.zone_vpn.masq=1
		set firewall.zone_vpn.input=REJECT
		set firewall.zone_vpn.forward=ACCEPT
		set firewall.zone_vpn.output=ACCEPT
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.@rule[5].name)" = "Allow-ICMPv6-Input" ]; then
	uci -q batch <<-EOF >/dev/null
		del firewall.@rule[5]
		commit firewall
	EOF
fi
if [ "$(uci -q get firewall.@rule[6].name)" = "Allow-ICMPv6-Forward" ]; then
	uci -q batch <<-EOF >/dev/null
		del firewall.@rule[6]
		commit firewall
	EOF
fi
if [ "$(uci -q show firewall | grep Allow-All-Ping)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		add firewall rule
		set firewall.@rule[-1].enabled='1'
		set firewall.@rule[-1].target='ACCEPT'
		set firewall.@rule[-1].name='Allow-All-Ping'
		set firewall.@rule[-1].proto='icmp'
		set firewall.@rule[-1].dest='*'
		set firewall.@rule[-1].src='*'
		set firewall.@rule[-1].icmp_type='echo-request'
		set firewall.@rule[-1].limit='1000/sec'
		commit firewall
	EOF
fi
if [ "$(uci -q show firewall | grep Allow-VPN-ICMP)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		add firewall rule
		set firewall.@rule[-1].enabled='1'
		set firewall.@rule[-1].target='ACCEPT'
		set firewall.@rule[-1].name='Allow-VPN-ICMP'
		set firewall.@rule[-1].proto='icmp'
		set firewall.@rule[-1].src='vpn'
		commit firewall
	EOF
fi
if [ "$(uci -q show firewall | grep Allow-Lan-to-Wan)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		add firewall rule
		set firewall.@rule[-1].enabled='1'
		set firewall.@rule[-1].target='ACCEPT'
		set firewall.@rule[-1].name='Allow-Lan-to-Wan'
		set firewall.@rule[-1].dest='wan'
		set firewall.@rule[-1].src='lan'
		set firewall.@rule[-1].proto='all'
		commit firewall
	EOF
fi

if [ "$(uci -q show firewall | grep ICMPv6-Lan-to-OMR)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		add firewall rule
		set firewall.@rule[-1].enabled='1'
		set firewall.@rule[-1].target='ACCEPT'
		set firewall.@rule[-1].name='ICMPv6-Lan-to-OMR'
		set firewall.@rule[-1].src='lan'
		set firewall.@rule[-1].family='ipv6'
		set firewall.@rule[-1].proto='icmp'
		set firewall.@rule[-1].limit='1000/sec'
		set firewall.@rule[-1].icmp_type='echo-reply destination-unreachable echo-request router-advertisement router-solicitation time-exceeded'
		commit firewall
	EOF
fi
#uci -q batch <<-EOF >/dev/null
#	del_list firewall.zone_wan.masq_dest='!10.0.0.0/8'
#	del_list firewall.zone_wan.masq_dest='!172.16.0.0/12'
#	del_list firewall.zone_wan.masq_dest='!192.168.0.0/16'
#	add_list firewall.zone_wan.masq_dest='!10.0.0.0/8'
#	add_list firewall.zone_wan.masq_dest='!172.16.0.0/12'
#	add_list firewall.zone_wan.masq_dest='!192.168.0.0/16'
#EOF
if [ "$(ubus call system board | jsonfilter -e '@.board_name')" = "bananapi,bpi-r2" ] || [ "$(ubus call system board | jsonfilter -e '@.board_name' | grep -i wrt)" != "" ]; then
	uci -q batch <<-EOF >/dev/null
	set firewall.@defaults[0].flow_offloading='1'
	set firewall.@defaults[0].flow_offloading_hw='1'
	EOF
fi

if [ "$(uci -q get firewall.omr_server)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.omr_server=include
		set firewall.omr_server.path=/etc/firewall.omr-server
		set firewall.omr_server.reload=1
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.gre_tunnel)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.gre_tunnel=include
		set firewall.gre_tunnel.path=/etc/firewall.gre-tunnel
		set firewall.gre_tunnel.reload=0
		commit firewall
	EOF
fi
if [ "$(uci -q get firewall.ttl)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.ttl=include
		set firewall.ttl.path=/etc/firewall.ttl
		set firewall.ttl.reload=1
		commit firewall
	EOF
fi
if [ "$(uci -q get firewall.fwlantovpn)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.zone_lan.auto_helper='0'
		set firewall.fwlantovpn=forwarding
		set firewall.fwlantovpn.src='lan'
		set firewall.fwlantovpn.dest='vpn'
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.blockquicproxy)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.blockquicproxy=rule
		set firewall.blockquicproxy.name='Block QUIC Proxy'
		set firewall.blockquicproxy.proto='udp'
		set firewall.blockquicproxy.dest_port='443'
		set firewall.blockquicproxy.target='DROP'
		set firewall.blockquicproxy.src='lan'
		set firewall.blockquicall=rule
		set firewall.blockquicall.name='Block QUIC All'
		set firewall.blockquicall.proto='udp'
		set firewall.blockquicall.src='*'
		set firewall.blockquicall.dest='*'
		set firewall.blockquicall.dest_port='443'
		set firewall.blockquicall.target='DROP'
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.allowicmpipv6)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.allowicmpipv6=rule
		set firewall.allowicmpipv6.proto='icmp'
		set firewall.allowicmpipv6.target='ACCEPT'
		set firewall.allowicmpipv6.src='wan'
		set firewall.allowicmpipv6.name='Allow IPv6 ICMP'
		set firewall.allowicmpipv6.family='ipv6'
		set firewall.@rule[-1].limit='1000/sec'
		set firewall.allowicmpipv6.icmp_type='neighbour-advertisement neighbour-solicitation router-advertisement router-solicitation'
		commit firewall
	EOF
fi

if [ "$(uci -q get firewall.allowdhcpv6546)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.allowdhcpv6546=rule
		set firewall.allowdhcpv6546.target='ACCEPT'
		set firewall.allowdhcpv6546.src='wan'
		set firewall.allowdhcpv6546.proto='udp'
		set firewall.allowdhcpv6546.dest_port='547'
		set firewall.allowdhcpv6546.name='Allow DHCPv6 (546-to-547)'
		set firewall.allowdhcpv6546.family='ipv6'
		set firewall.allowdhcpv6546.src_port='546'
		set firewall.allowdhcpv6547=rule
		set firewall.allowdhcpv6547.target='ACCEPT'
		set firewall.allowdhcpv6547.src='wan'
		set firewall.allowdhcpv6547.proto='udp'
		set firewall.allowdhcpv6547.dest_port='546'
		set firewall.allowdhcpv6547.name='Allow DHCPv6 (547-to-546)'
		set firewall.allowdhcpv6547.family='ipv6'
		set firewall.allowdhcpv6547.src_port='547'
		commit firewall
	EOF
fi

# Fix firewall config from some old config
allintf=$(uci -q get firewall.zone_wan.network)
uci -q del firewall.zone_wan.network
for intf in $allintf; do
	uci -q add_list firewall.zone_wan.network="${intf}"
done
allintf=$(uci -q get firewall.zone_vpn.network)
uci -q del firewall.zone_vpn.network
for intf in $allintf; do
	uci -q add_list firewall.zone_vpn.network="${intf}"
done

uci -q batch <<-EOF >/dev/null
	set firewall.zone_lan.mtu_fix='1'
	set firewall.zone_vpn.mtu_fix='1'
	set firewall.@include[0].reload='1'
	commit firewall
EOF
if [ "$(uci -q get openmptcprouter.settings.sipalg)" = "" ]; then
	uci -q batch <<-EOF >/dev/null
		set openmptcprouter.settings.sipalg='1'
		commit openmptcprouter
	EOF
fi
if [ "$(uci -q get openmptcprouter.settings.sipalg)" = "0" ]; then
	uci -q batch <<-EOF >/dev/null
		set firewall.zone_lan.auto_helper='0'
		set firewall.zone_wan.auto_helper='0'
		set firewall.zone_vpn.auto_helper='0'
		commit firewall
	EOF
	rmmod nf_nat_sip 2>&1 >/dev/null
	rmmod nf_conntrack_sip 2>&1 >/dev/null
fi

rm -f /tmp/luci-indexcache

exit 0