X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/2c25f7e70c44185f28a51cb7377fd0cd6a40775e..e8a4e0d67c875d45d4afd9b22a884d1ebd32d410:/package/firewall/files/lib/core_interface.sh

diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh
index 56ff1a118..c2a5bd7f3 100644
--- a/package/firewall/files/lib/core_interface.sh
+++ b/package/firewall/files/lib/core_interface.sh
@@ -11,7 +11,12 @@ fw_configure_interface() {
 		[ "$status" == 1 ] || [ -n "$aliasnet" ] || return 0
 	}
 
-	[ -n "$ifname" ] || ifname=$(uci_get_state network "$iface" ifname "$iface")
+	[ -n "$ifname" ] || {
+		ifname=$(uci_get_state network "$iface" ifname)
+		ifname="${ifname%%:*}"
+		[ -z "$ifname" ] && return 0
+	}
+
 	[ "$ifname" == "lo" ] && return 0
 
 	fw_callback pre interface
@@ -22,22 +27,24 @@ fw_configure_interface() {
 		local chain=zone_${zone}
 		local ifname=$3
 		local subnet=$4
+		local masq_src=$5
+		local masq_dest=$6
 
 		local inet onet
 		local mode=$(fw_get_family_mode x $zone i)
 
 		case "$mode/$subnet" in
 			# Zone supports v6 only or dual, need v6
-			6/*:*|i/*:*)
-				inet="{ -s $subnet -d ::/0 }"
-				onet="{ -s ::/0 -d $subnet }"
+			G6/*:*|i/*:*)
+				inet="-s $subnet -d ::/0"
+				onet="-s ::/0 -d $subnet"
 				mode=6
 			;;
 
 			# Zone supports v4 only or dual, need v4
-			4/*.*.*.*|i/*.*.*.*)
-				inet="{ -s $subnet -d 0.0.0.0/0 }"
-				onet="{ -s 0.0.0.0/0 -d $subnet }"
+			G4/*.*.*.*|i/*.*.*.*)
+				inet="-s $subnet -d 0.0.0.0/0"
+				onet="-s 0.0.0.0/0 -d $subnet"
 				mode=4
 			;;
 
@@ -48,34 +55,48 @@ fw_configure_interface() {
 			*/*.*) fw_log info "zone $zone does not support IPv4 address family, skipping"; return ;;
 		esac
 
-		fw $action $mode f ${chain}_ACCEPT ACCEPT ^ $onet { -o "$ifname" }
-		fw $action $mode f ${chain}_ACCEPT ACCEPT ^ $inet { -i "$ifname" }
-		fw $action $mode f ${chain}_DROP   DROP   ^ $onet { -o "$ifname" }
-		fw $action $mode f ${chain}_DROP   DROP   ^ $inet { -i "$ifname" }
-		fw $action $mode f ${chain}_REJECT reject ^ $onet { -o "$ifname" }
-		fw $action $mode f ${chain}_REJECT reject ^ $inet { -i "$ifname" }
+		fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -o "$ifname" $onet }
+		fw $action $mode f ${chain}_ACCEPT ACCEPT $ { -i "$ifname" $inet }
+		fw $action $mode f ${chain}_DROP   DROP   $ { -o "$ifname" $onet }
+		fw $action $mode f ${chain}_DROP   DROP   $ { -i "$ifname" $inet }
+		fw $action $mode f ${chain}_REJECT reject $ { -o "$ifname" $onet }
+		fw $action $mode f ${chain}_REJECT reject $ { -i "$ifname" $inet }
+
+		# NB: if MASQUERADING for IPv6 becomes available we'll need a family check here
+		local msrc mdst
+		for msrc in ${masq_src:-0.0.0.0/0}; do
+			[ "${msrc#!}" != "$msrc" ] && msrc="! -s ${msrc#!}" || msrc="-s $msrc"
+			for mdst in ${subnet:-${masq_dest:-0.0.0.0/0}}; do
+				[ "${mdst#!}" != "$mdst" ] && mdst="! -d ${mdst#!}" || mdst="-d $mdst"
+				fw $action $mode n ${chain}_nat MASQUERADE $ { -o "$ifname" $msrc $mdst }
+			done
+		done
 
-		fw $action $mode n ${chain}_nat MASQUERADE ^ $onet { -o "$ifname" }
-		fw $action $mode f ${chain}_MSSFIX TCPMSS  ^ $onet { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
+		fw $action $mode f ${chain}_MSSFIX TCPMSS  $ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu $onet }
 
-		fw $action $mode f input   ${chain}         $ $inet { -i "$ifname" }
-		fw $action $mode f forward ${chain}_forward $ $inet { -i "$ifname" }
-		fw $action $mode n PREROUTING ${chain}_prerouting ^ $inet { -i "$ifname" }
-		fw $action $mode r PREROUTING ${chain}_notrack    ^ $inet { -i "$ifname" }
+		fw $action $mode f input   ${chain}         $ { -i "$ifname" $inet }
+		fw $action $mode f forward ${chain}_forward $ { -i "$ifname" $inet }
+		fw $action $mode n PREROUTING ${chain}_prerouting $ { -i "$ifname" $inet }
+		fw $action $mode r PREROUTING ${chain}_notrack    $ { -i "$ifname" $inet }
 	}
 
-	local old_zones old_ifname old_subnet
+	local old_zones old_ifname old_subnets old_masq_src old_masq_dest
 	config_get old_zones core "${iface}_zone"
 	[ -n "$old_zones" ] && {
 		config_get old_ifname core "${iface}_ifname"
-		config_get old_subnet core "${iface}_subnet"
+		config_get old_subnets core "${iface}_subnets"
+		config_get old_masq_src core "${iface}_masq_src"
+		config_get old_masq_dest core "${iface}_masq_dest"
 
 		local z
 		for z in $old_zones; do
-			fw_log info "removing $iface ($old_ifname${old_subnet:+ alias $old_subnet}) from zone $z"
-			fw__do_rules del $z $old_ifname $old_subnet
+			local n
+			for n in ${old_subnets:-""}; do
+				fw_log info "removing $iface ($old_ifname${n:+ alias $n}) from zone $z"
+				fw__do_rules del $z $old_ifname $n "$old_masq_src" "$old_masq_dest"
+			done
 
-			[ -n "$old_subnet" ] || ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+			[ -n "$old_subnets" ] || ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
 		done
 
 		local old_aliases
@@ -88,25 +109,14 @@ fw_configure_interface() {
 
 		uci_revert_state firewall core "${iface}_zone"
 		uci_revert_state firewall core "${iface}_ifname"
-		uci_revert_state firewall core "${iface}_subnet"
+		uci_revert_state firewall core "${iface}_subnets"
 		uci_revert_state firewall core "${iface}_aliases"
+		uci_revert_state firewall core "${iface}_masq_src"
+		uci_revert_state firewall core "${iface}_masq_dest"
 	}
 
 	[ "$action" == del ] && return
 
-	local new_zones=
-	load_zone() {
-		fw_config_get_zone "$1"
-		list_contains zone_network "$iface" || return
-
-		fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
-		fw__do_rules add ${zone_name} "$ifname" $aliasnet
-		append new_zones $zone_name
-
-		[ -n "$aliasnet" ] || ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
-	}
-	config_foreach load_zone zone
-
 	[ -z "$aliasnet" ] && {
 		local aliases
 		config_get aliases "$iface" aliases
@@ -118,19 +128,44 @@ fw_configure_interface() {
 			config_get netmask "$a" netmask
 			config_get ip6addr "$a" ip6addr
 
-			[ -n "$ipaddr" ] && fw_configure_interface "$a" add "$ifname" "$ipaddr${netmask:+/$netmask}"
-			[ -n "$ip6addr" ] && fw_configure_interface "$a" add "$ifname" "$ip6addr"
+			[ -n "$ipaddr" ] && fw_configure_interface "$a" add "" "$ipaddr${netmask:+/$netmask}"
+			[ -n "$ip6addr" ] && fw_configure_interface "$a" add "" "$ip6addr"
 		done
 
 		fw_sysctl_interface $ifname
 		fw_callback post interface
 
 		uci_set_state firewall core "${iface}_aliases" "$aliases"
+	} || {
+		local subnets=
+		config_get subnets core "${iface}_subnets"
+		append subnets "$aliasnet"
+
+		config_set core "${iface}_subnets" "$subnets"
+		uci_set_state firewall core "${iface}_subnets" "$subnets"
+	}
+
+	local new_zones=
+	local new_masq_src=
+	local new_masq_dest=
+	load_zone() {
+		fw_config_get_zone "$1"
+		list_contains zone_network "$iface" || return
+
+		fw_log info "adding $iface ($ifname${aliasnet:+ alias $aliasnet}) to zone $zone_name"
+		fw__do_rules add ${zone_name} "$ifname" "$aliasnet" "$zone_masq_src" "$zone_masq_dest"
+		append new_zones $zone_name
+		append new_masq_src "$zone_masq_src"
+		append new_masq_dest "$zone_masq_dest"
+
+		[ -n "$aliasnet" ] || ACTION=add ZONE="$zone_name" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
 	}
+	config_foreach load_zone zone
 
 	uci_set_state firewall core "${iface}_zone" "$new_zones"
 	uci_set_state firewall core "${iface}_ifname" "$ifname"
-	uci_set_state firewall core "${iface}_subnet" "$aliasnet"
+	uci_set_state firewall core "${iface}_masq_src" "$new_masq_src"
+	uci_set_state firewall core "${iface}_masq_dest" "$new_masq_dest"
 }
 
 fw_sysctl_interface() {