X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/e8be3016c98c2e7d81755c4eae34ea3c60f4b3f9..ec40024c13729034674107632ca48de6771c8eaf:/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 82939b941..e93de1613 100644
--- a/package/firewall/files/lib/core_init.sh
+++ b/package/firewall/files/lib/core_init.sh
@@ -1,9 +1,11 @@
-# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2009-2011 OpenWrt.org
 # Copyright (C) 2008 John Crispin <blogic@openwrt.org>
 
 FW_INITIALIZED=
 
 FW_ZONES=
+FW_ZONES4=
+FW_ZONES6=
 FW_CONNTRACK_ZONES=
 FW_NOTRACK_DISABLED=
 
@@ -16,6 +18,9 @@ FW_DEFAULT_INPUT_POLICY=REJECT
 FW_DEFAULT_OUTPUT_POLICY=REJECT
 FW_DEFAULT_FORWARD_POLICY=REJECT
 
+FW_DISABLE_IPV4=0
+FW_DISABLE_IPV6=0
+
 
 fw_load_defaults() {
 	fw_config_get_section "$1" defaults { \
@@ -34,9 +39,10 @@ fw_load_defaults() {
 		boolean accept_redirects 0 \
 		boolean accept_source_route 0 \
 		boolean custom_chains 1 \
+		boolean disable_ipv6 0 \
 	} || return
 	[ -n "$FW_DEFAULTS_APPLIED" ] && {
-		echo "Error: multiple defaults sections detected"
+		fw_log error "duplicate defaults section detected, skipping"
 		return 1
 	}
 	FW_DEFAULTS_APPLIED=1
@@ -50,6 +56,8 @@ fw_load_defaults() {
 	FW_ACCEPT_REDIRECTS=$defaults_accept_redirects
 	FW_ACCEPT_SRC_ROUTE=$defaults_accept_source_route
 
+	FW_DISABLE_IPV6=$defaults_disable_ipv6
+
 	fw_callback pre defaults
 
 	# Seems like there are only one sysctl for both IP versions.
@@ -58,17 +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 }
 
@@ -76,13 +84,16 @@ fw_load_defaults() {
 	[ $defaults_syn_flood == 1 ] && \
 		defaults_synflood_protect=1
 
+	[ "${defaults_synflood_rate%/*}" == "$defaults_synflood_rate" ] && \
+		defaults_synflood_rate="$defaults_synflood_rate/second"
+
 	[ $defaults_synflood_protect == 1 ] && {
 		echo "Loading synflood protection"
 		fw_callback pre synflood
 		fw add i f syn_flood
 		fw add i f syn_flood RETURN { \
 			-p tcp --syn \
-			-m limit --limit "${defaults_synflood_rate}/second" --limit-burst "${defaults_synflood_burst}" \
+			-m limit --limit "${defaults_synflood_rate}" --limit-burst "${defaults_synflood_burst}" \
 		}
 		fw add i f syn_flood DROP
 		fw add i f INPUT syn_flood { -p tcp --syn }
@@ -96,7 +107,7 @@ fw_load_defaults() {
 		fw add i f forwarding_rule
 		fw add i n prerouting_rule
 		fw add i n postrouting_rule
-			
+
 		fw add i f INPUT       input_rule
 		fw add i f OUTPUT      output_rule
 		fw add i f FORWARD     forwarding_rule
@@ -131,9 +142,14 @@ fw_config_get_zone() {
 		string output "$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" \
+		boolean log 0 \
+		string log_limit 10 \
+		string family "" \
 	} || return
 	[ -n "$zone_name" ] || zone_name=$zone_NAME
 	[ -n "$zone_network" ] || zone_network=$zone_name
@@ -143,68 +159,124 @@ 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
 
 	fw_callback pre zone
 
 	[ $zone_conntrack = 1 -o $zone_masq = 1 ] && \
-		append FW_CONNTRACK_ZONES "$zone_NAME"
+		append FW_CONNTRACK_ZONES "$zone_name"
+
+	local mode
+	case "$zone_family" in
+		*4)
+			mode=4
+			append FW_ZONES4 $zone_name
+			uci_set_state firewall core ${zone_name}_ipv4 1
+		;;
+		*6)
+			mode=6
+			append FW_ZONES6 $zone_name
+			uci_set_state firewall core ${zone_name}_ipv6 1
+		;;
+		*)
+			mode=i
+			append FW_ZONES4 $zone_name
+			append FW_ZONES6 $zone_name
+			uci_set_state firewall core ${zone_name}_ipv4 1
+			uci_set_state firewall core ${zone_name}_ipv6 1
+		;;
+	esac
 
 	local chain=zone_${zone_name}
 
-	fw add i f ${chain}_ACCEPT
-	fw add i f ${chain}_DROP
-	fw add i f ${chain}_REJECT
-	fw add i f ${chain}_MSSFIX
+	fw add $mode f ${chain}_ACCEPT
+	fw add $mode f ${chain}_DROP
+	fw add $mode f ${chain}_REJECT
 
 	# TODO: Rename to ${chain}_input
-	fw add i f ${chain}
-	fw add i f ${chain} ${chain}_${zone_input} $
+	fw add $mode f ${chain}
+	fw add $mode f ${chain} ${chain}_${zone_input} $
 
-	fw add i f ${chain}_forward
-	fw add i f ${chain}_forward ${chain}_${zone_forward} $
+	fw add $mode f ${chain}_forward
+	fw add $mode f ${chain}_forward ${chain}_${zone_forward} $
 
 	# TODO: add ${chain}_output
-	fw add i f output ${chain}_${zone_output} $
+	fw add $mode f output ${chain}_${zone_output} $
 
 	# TODO: Rename to ${chain}_MASQUERADE
-	fw add i n ${chain}_nat
-	fw add i n ${chain}_prerouting
+	fw add $mode n ${chain}_nat
+	fw add $mode n ${chain}_prerouting
 
-	fw add i r ${chain}_notrack
-	[ $zone_masq == 1 ] && \
-		fw add i n POSTROUTING ${chain}_nat $
+	fw add $mode r ${chain}_notrack
 
-	[ $zone_mtu_fix == 1 ] && \
-		fw add i 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 ] || \
 			fw_die "zone ${zone_name}: custom_chains globally disabled"
 
-		fw add i f input_${zone_name}
-		fw add i f ${chain} input_${zone_name} ^
+		fw add $mode f input_${zone_name}
+		fw add $mode f ${chain} input_${zone_name} ^
 
-		fw add i f forwarding_${zone_name}
-		fw add i f ${chain}_forward forwarding_${zone_name} ^
+		fw add $mode f forwarding_${zone_name}
+		fw add $mode f ${chain}_forward forwarding_${zone_name} ^
 
-		fw add i n prerouting_${zone_name}
-		fw add i n ${chain}_prerouting prerouting_${zone_name} ^
+		fw add $mode n prerouting_${zone_name}
+		fw add $mode n ${chain}_prerouting prerouting_${zone_name} ^
 	}
 
+	[ "$zone_log" == 1 ] && {
+		[ "${zone_log_limit%/*}" == "$zone_log_limit" ] && \
+			zone_log_limit="$zone_log_limit/minute"
+
+		local t
+		for t in REJECT DROP; do
+			fw add $mode f ${chain}_${t} LOG ^ \
+				{ -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
 }
 
 fw_load_notrack_zone() {
-	list_contains FW_CONNTRACK_ZONES "$1" && return
-
 	fw_config_get_zone "$1"
+	list_contains FW_CONNTRACK_ZONES "${zone_name}" && return
 
 	fw_callback pre notrack
 
-	fw add i f zone_${zone_name}_notrack NOTRACK $
+	fw add i r zone_${zone_name}_notrack NOTRACK $
 
 	fw_callback post notrack
 }
@@ -213,8 +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 )
 }