X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/94c817eadb20a09468bef10f0e43036ab2012c89..57968b17ca658805ef2069321b960224109122b2:/package/firewall/files/lib/core_init.sh

diff --git a/package/firewall/files/lib/core_init.sh b/package/firewall/files/lib/core_init.sh
index 72cef2f8c..e93de1613 100644
--- a/package/firewall/files/lib/core_init.sh
+++ b/package/firewall/files/lib/core_init.sh
@@ -1,4 +1,4 @@
-# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2009-2011 OpenWrt.org
 # Copyright (C) 2008 John Crispin <blogic@openwrt.org>
 
 FW_INITIALIZED=
@@ -42,7 +42,7 @@ fw_load_defaults() {
 		boolean disable_ipv6 0 \
 	} || return
 	[ -n "$FW_DEFAULTS_APPLIED" ] && {
-		echo "Error: multiple defaults sections detected"
+		fw_log error "duplicate defaults section detected, skipping"
 		return 1
 	}
 	FW_DEFAULTS_APPLIED=1
@@ -66,17 +66,17 @@ fw_load_defaults() {
 	done
 	fw_sysctl_interface all
 
+	fw add i f INPUT   ACCEPT { -m conntrack --ctstate RELATED,ESTABLISHED }
+	fw add i f OUTPUT  ACCEPT { -m conntrack --ctstate RELATED,ESTABLISHED }
+	fw add i f FORWARD ACCEPT { -m conntrack --ctstate RELATED,ESTABLISHED }
+
 	[ $defaults_drop_invalid == 1 ] && {
-		fw add i f INPUT   DROP { -m state --state INVALID }
-		fw add i f OUTPUT  DROP { -m state --state INVALID }
-		fw add i f FORWARD DROP { -m state --state INVALID }
+		fw add i f INPUT   DROP { -m conntrack --ctstate INVALID }
+		fw add i f OUTPUT  DROP { -m conntrack --ctstate INVALID }
+		fw add i f FORWARD DROP { -m conntrack --ctstate INVALID }
 		FW_NOTRACK_DISABLED=1
 	}
 
-	fw add i f INPUT   ACCEPT { -m state --state RELATED,ESTABLISHED }
-	fw add i f OUTPUT  ACCEPT { -m state --state RELATED,ESTABLISHED }
-	fw add i f FORWARD ACCEPT { -m state --state RELATED,ESTABLISHED }
-
 	fw add i f INPUT  ACCEPT { -i lo }
 	fw add i f OUTPUT ACCEPT { -o lo }
 
@@ -142,6 +142,8 @@ fw_config_get_zone() {
 		string output "$FW_DEFAULT_OUTPUT_POLICY" \
 		string forward "$FW_DEFAULT_FORWARD_POLICY" \
 		boolean masq 0 \
+		string masq_src "" \
+		string masq_dest "" \
 		boolean conntrack 0 \
 		boolean mtu_fix 0 \
 		boolean custom_chains "$FW_ADD_CUSTOM_CHAINS" \
@@ -157,7 +159,8 @@ fw_load_zone() {
 	fw_config_get_zone "$1"
 
 	list_contains FW_ZONES $zone_name && {
-		fw_die "zone ${zone_name}: duplicated zone"
+		fw_log error "zone ${zone_name}: duplicated zone, skipping"
+		return 0
 	}
 	append FW_ZONES $zone_name
 
@@ -192,7 +195,6 @@ fw_load_zone() {
 	fw add $mode f ${chain}_ACCEPT
 	fw add $mode f ${chain}_DROP
 	fw add $mode f ${chain}_REJECT
-	fw add $mode f ${chain}_MSSFIX
 
 	# TODO: Rename to ${chain}_input
 	fw add $mode f ${chain}
@@ -210,11 +212,11 @@ fw_load_zone() {
 
 	fw add $mode r ${chain}_notrack
 
-	[ $zone_masq == 1 ] && \
-		fw add $mode n POSTROUTING ${chain}_nat $
-
-	[ $zone_mtu_fix == 1 ] && \
-		fw add $mode f FORWARD ${chain}_MSSFIX ^
+	[ $zone_mtu_fix == 1 ] && {
+		fw add $mode m ${chain}_MSSFIX
+		fw add $mode m FORWARD ${chain}_MSSFIX ^
+		uci_set_state firewall core ${zone_name}_tcpmss 1
+	}
 
 	[ $zone_custom_chains == 1 ] && {
 		[ $FW_ADD_CUSTOM_CHAINS == 1 ] || \
@@ -235,12 +237,36 @@ fw_load_zone() {
 			zone_log_limit="$zone_log_limit/minute"
 
 		local t
-		for t in REJECT DROP MSSFIX; do
+		for t in REJECT DROP; do
 			fw add $mode f ${chain}_${t} LOG ^ \
-				{ -m limit --limit $zone_log_limit --log-prefix "$t($zone_name): "  }
+				{ -m limit --limit $zone_log_limit --log-prefix "$t($zone_name): " }
 		done
+
+		[ $zone_mtu_fix == 1 ] && \
+			fw add $mode m ${chain}_MSSFIX LOG ^ \
+				{ -m limit --limit $zone_log_limit --log-prefix "MSSFIX($zone_name): " }
 	}
 
+	# NB: if MASQUERADING for IPv6 becomes available we'll need a family check here
+	if [ "$zone_masq" == 1 ]; then
+		local msrc mdst
+		for msrc in ${zone_masq_src:-0.0.0.0/0}; do
+			case "$msrc" in
+				*.*) fw_get_negation msrc '-s' "$msrc" ;;
+				*)   fw_get_subnet4 msrc '-s' "$msrc" || break ;;
+			esac
+
+			for mdst in ${zone_masq_dest:-0.0.0.0/0}; do
+				case "$mdst" in
+					*.*) fw_get_negation mdst '-d' "$mdst" ;;
+					*)   fw_get_subnet4 mdst '-d' "$mdst" || break ;;
+				esac
+
+				fw add $mode n ${chain}_nat MASQUERADE $ { $msrc $mdst }
+			done
+		done
+	fi
+
 	fw_callback post zone
 }
 
@@ -259,8 +285,10 @@ fw_load_notrack_zone() {
 fw_load_include() {
 	local name="$1"
 
-	local path; config_get path ${name} path
-	[ -e $path ] && . $path
+	local path
+	config_get path ${name} path
+
+	[ -e $path ] && ( . $path )
 }