firewall: - replace uci firewall with a modular dual stack implementation developed by Malte S. Stretz - bump version to 2

SVN-Revision: 21286

1 files changed, 0 insertions, 530 deletions

diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
deleted file mode 100755
index 8d75382..0000000
--- a/package/firewall/files/uci_firewall.sh
+++ /dev/null
@@ -1,530 +0,0 @@
-#!/bin/sh
-# Copyright (C) 2008 John Crispin <blogic@openwrt.org>
-
-. /etc/functions.sh
-
-IPTABLES="echo iptables"
-IPTABLES=iptables
-
-config_clear
-include /lib/network
-scan_interfaces
-
-CONFIG_APPEND=1
-config_load firewall
-
-config fw_zones
-ZONE_LIST=$CONFIG_SECTION
-
-CUSTOM_CHAINS=1
-DEF_INPUT=DROP
-DEF_OUTPUT=DROP
-DEF_FORWARD=DROP
-CONNTRACK_ZONES=
-NOTRACK_DISABLED=
-
-find_item() {
-	local item="$1"; shift
-	for i in "$@"; do
-		[ "$i" = "$item" ] && return 0
-	done
-	return 1
-}
-
-load_policy() {
-	config_get input $1 input
-	config_get output $1 output
-	config_get forward $1 forward
-
-	DEF_INPUT="${input:-$DEF_INPUT}"
-	DEF_OUTPUT="${output:-$DEF_OUTPUT}"
-	DEF_FORWARD="${forward:-$DEF_FORWARD}"
-}
-
-create_zone() {
-	local exists
-
-	[ "$1" == "loopback" ] && return
-
-	config_get exists $ZONE_LIST $1
-	[ -n "$exists" ] && return
-	config_set $ZONE_LIST $1 1
-
-	$IPTABLES -N zone_$1
-	$IPTABLES -N zone_$1_MSSFIX
-	$IPTABLES -N zone_$1_ACCEPT
-	$IPTABLES -N zone_$1_DROP
-	$IPTABLES -N zone_$1_REJECT
-	$IPTABLES -N zone_$1_forward
-	[ "$4" ] && $IPTABLES -A output -j zone_$1_$4
-	$IPTABLES -N zone_$1_nat -t nat
-	$IPTABLES -N zone_$1_prerouting -t nat
-	$IPTABLES -t raw -N zone_$1_notrack
-	[ "$6" == "1" ] && $IPTABLES -t nat -A POSTROUTING -j zone_$1_nat
-	[ "$7" == "1" ] && $IPTABLES -I FORWARD 1 -j zone_$1_MSSFIX
-}
-
-
-addif() {
-	local network="$1"
-	local ifname="$2"
-	local zone="$3"
-
-	local n_if n_zone
-	config_get n_if core "${network}_ifname"
-	config_get n_zone core "${network}_zone"
-	[ -n "$n_zone" ] && {
-		if [ "$n_zone" != "$zone" ]; then
-			delif "$network" "$n_if" "$n_zone"
-		else
-			return
-		fi
-	}
-
-	logger "adding $network ($ifname) to firewall zone $zone"
-	$IPTABLES -A input -i "$ifname" -j zone_${zone}
-	$IPTABLES -I zone_${zone}_MSSFIX 1 -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-	$IPTABLES -I zone_${zone}_ACCEPT 1 -o "$ifname" -j ACCEPT
-	$IPTABLES -I zone_${zone}_DROP 1 -o "$ifname" -j DROP
-	$IPTABLES -I zone_${zone}_REJECT 1 -o "$ifname" -j reject
-	$IPTABLES -I zone_${zone}_ACCEPT 1 -i "$ifname" -j ACCEPT
-	$IPTABLES -I zone_${zone}_DROP 1 -i "$ifname" -j DROP
-	$IPTABLES -I zone_${zone}_REJECT 1 -i "$ifname" -j reject
-	$IPTABLES -I zone_${zone}_nat 1 -t nat -o "$ifname" -j MASQUERADE
-	$IPTABLES -I PREROUTING 1 -t nat -i "$ifname" -j zone_${zone}_prerouting
-	$IPTABLES -A forward -i "$ifname" -j zone_${zone}_forward
-	$IPTABLES -t raw -I PREROUTING 1 -i "$ifname" -j zone_${zone}_notrack
-	uci_set_state firewall core "${network}_ifname" "$ifname"
-	uci_set_state firewall core "${network}_zone" "$zone"
-	ACTION=add ZONE="$zone" INTERFACE="$network" DEVICE="$ifname" /sbin/hotplug-call firewall
-}
-
-delif() {
-	local network="$1"
-	local ifname="$2"
-	local zone="$3"
-
-	logger "removing $network ($ifname) from firewall zone $zone"
-	$IPTABLES -D input -i "$ifname" -j zone_$zone
-	$IPTABLES -D zone_${zone}_MSSFIX -o "$ifname" -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu
-	$IPTABLES -D zone_${zone}_ACCEPT -o "$ifname" -j ACCEPT
-	$IPTABLES -D zone_${zone}_DROP -o "$ifname" -j DROP
-	$IPTABLES -D zone_${zone}_REJECT -o "$ifname" -j reject
-	$IPTABLES -D zone_${zone}_ACCEPT -i "$ifname" -j ACCEPT
-	$IPTABLES -D zone_${zone}_DROP -i "$ifname" -j DROP
-	$IPTABLES -D zone_${zone}_REJECT -i "$ifname" -j reject
-	$IPTABLES -D zone_${zone}_nat -t nat -o "$ifname" -j MASQUERADE
-	$IPTABLES -D PREROUTING -t nat -i "$ifname" -j zone_${zone}_prerouting
-	$IPTABLES -D forward -i "$ifname" -j zone_${zone}_forward
-	uci_revert_state firewall core "${network}_ifname"
-	uci_revert_state firewall core "${network}_zone"
-	ACTION=remove ZONE="$zone" INTERFACE="$network" DEVICE="$ifname" /sbin/hotplug-call firewall
-}
-
-load_synflood() {
-	local rate=${1:-25}
-	local burst=${2:-50}
-	echo "Loading synflood protection"
-	$IPTABLES -N syn_flood
-	$IPTABLES -A syn_flood -p tcp --syn -m limit --limit $rate/second --limit-burst $burst -j RETURN
-	$IPTABLES -A syn_flood -j DROP
-	$IPTABLES -A INPUT -p tcp --syn -j syn_flood
-}
-
-fw_set_chain_policy() {
-	local chain=$1
-	local target=$2
-	[ "$target" == "REJECT" ] && {
-		$IPTABLES -A $chain -j reject
-		target=DROP
-	}
-	$IPTABLES -P $chain $target
-}
-
-fw_clear() {
-	$IPTABLES -F
-	$IPTABLES -t nat -F
-	$IPTABLES -t nat -X
-	$IPTABLES -t raw -F
-	$IPTABLES -t raw -X
-	$IPTABLES -X
-}
-
-fw_defaults() {
-	[ -n "$DEFAULTS_APPLIED" ] && {
-		echo "Error: multiple defaults sections detected"
-		return;
-	}
-	DEFAULTS_APPLIED=1
-
-	load_policy "$1"
-
-	echo 1 > /proc/sys/net/ipv4/tcp_syncookies
-	for f in /proc/sys/net/ipv4/conf/*/accept_redirects
-	do
-		echo 0 > $f
-	done
-	for f in /proc/sys/net/ipv4/conf/*/accept_source_route
-	do
-		echo 0 > $f
-	done
-
-	uci_revert_state firewall core
-	uci_set_state firewall core "" firewall_state
-
-	$IPTABLES -P INPUT DROP
-	$IPTABLES -P OUTPUT DROP
-	$IPTABLES -P FORWARD DROP
-
-	fw_clear
-	config_get_bool drop_invalid $1 drop_invalid 0
-
-	[ "$drop_invalid" -gt 0 ] && {
-		$IPTABLES -A INPUT -m state --state INVALID -j DROP
-		$IPTABLES -A OUTPUT -m state --state INVALID -j DROP
-		$IPTABLES -A FORWARD -m state --state INVALID -j DROP
-		NOTRACK_DISABLED=1
-	}
-
-	$IPTABLES -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-	$IPTABLES -A OUTPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
-	$IPTABLES -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT
-
-	$IPTABLES -A INPUT -i lo -j ACCEPT
-	$IPTABLES -A OUTPUT -o lo -j ACCEPT
-
-	config_get syn_flood $1 syn_flood
-	config_get syn_rate $1 syn_rate
-	config_get syn_burst $1 syn_burst
-	[ "$syn_flood" == "1" ] && load_synflood $syn_rate $syn_burst
-
-	echo "Adding custom chains"
-	fw_custom_chains
-
-	$IPTABLES -N input
-	$IPTABLES -N output
-	$IPTABLES -N forward
-
-	$IPTABLES -A INPUT -j input
-	$IPTABLES -A OUTPUT -j output
-	$IPTABLES -A FORWARD -j forward
-
-	$IPTABLES -N reject
-	$IPTABLES -A reject -p tcp -j REJECT --reject-with tcp-reset
-	$IPTABLES -A reject -j REJECT --reject-with icmp-port-unreachable
-
-	fw_set_chain_policy INPUT "$DEF_INPUT"
-	fw_set_chain_policy OUTPUT "$DEF_OUTPUT"
-	fw_set_chain_policy FORWARD "$DEF_FORWARD"
-}
-
-fw_zone_defaults() {
-	local name
-	local network
-	local masq
-
-	config_get name $1 name
-	config_get network $1 network
-	config_get_bool masq $1 masq "0"
-	config_get_bool conntrack $1 conntrack "0"
-	config_get_bool mtu_fix $1 mtu_fix 0
-
-	load_policy $1
-	[ "$forward" ] && $IPTABLES -A zone_${name}_forward -j zone_${name}_${forward}
-	[ "$input" ] && $IPTABLES -A zone_${name} -j zone_${name}_${input}
-}
-
-fw_zone() {
-	local name
-	local network
-	local masq
-
-	config_get name $1 name
-	config_get network $1 network
-	config_get_bool masq $1 masq "0"
-	config_get_bool conntrack $1 conntrack "0"
-	config_get_bool mtu_fix $1 mtu_fix 0
-
-	load_policy $1
-	[ "$conntrack" = "1" -o "$masq" = "1" ] && append CONNTRACK_ZONES "$name"
-	[ -z "$network" ] && network=$name
-	create_zone "$name" "$network" "$input" "$output" "$forward" "$masq" "$mtu_fix"
-	fw_custom_chains_zone "$name"
-}
-
-fw_rule() {
-	local src
-	local src_ip
-	local src_mac
-	local src_port
-	local src_mac
-	local dest
-	local dest_ip
-	local dest_port
-	local proto
-	local icmp_type
-	local target
-	local ruleset
-
-	config_get src $1 src
-	config_get src_ip $1 src_ip
-	config_get src_mac $1 src_mac
-	config_get src_port $1 src_port
-	config_get dest $1 dest
-	config_get dest_ip $1 dest_ip
-	config_get dest_port $1 dest_port
-	config_get proto $1 proto
-	config_get icmp_type $1 icmp_type
-	config_get target $1 target
-	config_get ruleset $1 ruleset
-
-	src_port_first=${src_port%-*}
-	src_port_last=${src_port#*-}
-	[ "$src_port_first" -ne "$src_port_last" ] && { \
-		src_port="$src_port_first:$src_port_last"; }
-
-	dest_port_first=${dest_port%-*}
-	dest_port_last=${dest_port#*-}
-	[ "$dest_port_first" -ne "$dest_port_last" ] && { \
-		dest_port="$dest_port_first:$dest_port_last"; }
-
-	ZONE=input
-	TARGET=$target
-	[ -z "$target" ] && target=DROP
-	[ -n "$src" -a -z "$dest" ] && ZONE=zone_$src
-	[ -n "$src" -a -n "$dest" ] && ZONE=zone_${src}_forward
-	[ -n "$dest" ] && TARGET=zone_${dest}_$target
-
-	eval 'RULE_COUNT=$((++RULE_COUNT_'$ZONE'))'
-
-	add_rule() {
-		$IPTABLES -I $ZONE $RULE_COUNT \
-			${proto:+-p $proto} \
-			${icmp_type:+--icmp-type $icmp_type} \
-			${src_ip:+-s $src_ip} \
-			${src_port:+--sport $src_port} \
-			${src_mac:+-m mac --mac-source $src_mac} \
-			${dest_ip:+-d $dest_ip} \
-			${dest_port:+--dport $dest_port} \
-			-j $TARGET
-	}
-	[ "$proto" == "tcpudp" -o -z "$proto" ] && {
-		proto=tcp
-		add_rule
-		proto=udp
-		add_rule
-		return
-	}
-	add_rule
-}
-
-fw_forwarding() {
-	local src
-	local dest
-	local masq
-
-	config_get src $1 src
-	config_get dest $1 dest
-	[ -n "$src" ] && z_src=zone_${src}_forward || z_src=forward
-	[ -n "$dest" ] && z_dest=zone_${dest}_ACCEPT || z_dest=ACCEPT
-	$IPTABLES -I $z_src 1 -j $z_dest
-
-	# propagate masq zone flag
-	find_item "$src" $CONNTRACK_ZONES && append CONNTRACK_ZONES $dest
-	find_item "$dest" $CONNTRACK_ZONES && append CONNTRACK_ZONES $src
-}
-
-fw_redirect() {
-	local src
-	local src_ip
-	local src_port
-	local src_dport
-	local src_mac
-	local dest_ip
-	local dest_port dest_port2
-	local proto
-
-	config_get src $1 src
-	config_get src_ip $1 src_ip
-	config_get src_dip $1 src_dip
-	config_get src_port $1 src_port
-	config_get src_dport $1 src_dport
-	config_get src_mac $1 src_mac
-	config_get dest_ip $1 dest_ip
-	config_get dest_port $1 dest_port
-	config_get proto $1 proto
-	[ -z "$src" -o -z "$dest_ip" ] && { \
-		echo "redirect needs src and dest_ip"; return ; }
-
-	src_port_first=${src_port%-*}
-	src_port_last=${src_port#*-}
-	[ "$src_port_first" != "$src_port_last" ] && { \
-		src_port="$src_port_first:$src_port_last"; }
-
-	src_dport_first=${src_dport%-*}
-	src_dport_last=${src_dport#*-}
-	[ "$src_dport_first" != "$src_dport_last" ] && { \
-		src_dport="$src_dport_first:$src_dport_last"; }
-
-	dest_port2=${dest_port:-$src_dport}
-	dest_port_first=${dest_port2%-*}
-	dest_port_last=${dest_port2#*-}
-	[ "$dest_port_first" != "$dest_port_last" ] && { \
-		dest_port2="$dest_port_first:$dest_port_last"; }
-
-	add_rule() {
-		$IPTABLES -A zone_${src}_prerouting -t nat \
-			${proto:+-p $proto} \
-			${src_ip:+-s $src_ip} \
-			${src_dip:+-d $src_dip} \
-			${src_port:+--sport $src_port} \
-			${src_dport:+--dport $src_dport} \
-			${src_mac:+-m mac --mac-source $src_mac} \
-			-j DNAT --to-destination $dest_ip${dest_port:+:$dest_port}
-
-		$IPTABLES -I zone_${src}_forward 1 \
-			${proto:+-p $proto} \
-			-d $dest_ip \
-			${src_ip:+-s $src_ip} \
-			${src_port:+--sport $src_port} \
-			${dest_port2:+--dport $dest_port2} \
-			${src_mac:+-m mac --mac-source $src_mac} \
-			-j ACCEPT
-	}
-	[ "$proto" == "tcpudp" -o -z "$proto" ] && {
-		proto=tcp
-		add_rule
-		proto=udp
-		add_rule
-		return
-	}
-	add_rule
-}
-
-fw_include() {
-	local path
-	config_get path $1 path
-	[ -e $path ] && . $path
-}
-
-get_interface_zones() {
-	local interface="$2"
-	local name
-	local network
-	config_get name $1 name
-	config_get network $1 network
-	[ -z "$network" ] && network=$name 
-	for n in $network; do
-		[ "$n" = "$interface" ] && append add_zone "$name"
-	done
-}
-
-fw_event() {
-	local action="$1"
-	local interface="$2"
-	local ifname="$(sh -c ". /etc/functions.sh; include /lib/network; scan_interfaces; config_get "$interface" ifname")"
-	add_zone=
-	local up
-
-	[ -z "$ifname" ] && return 0
-	config_foreach get_interface_zones zone "$interface"
-	[ -z "$add_zone" ] && return 0
-
-	case "$action" in
-		ifup)
-			for z in $add_zone; do 
-				local loaded
-				config_get loaded core loaded
-				[ -n "$loaded" ] && addif "$interface" "$ifname" "$z"
-			done
-		;;
-		ifdown)
-			config_get up "$interface" up
-
-			for z in $ZONE; do 
-				[ "$up" == "1" ] && delif "$interface" "$ifname" "$z"
-			done
-		;;
-	esac
-}
-
-fw_addif() {
-	local up
-	local ifname
-	config_get up $1 up
-	[ -n "$up" ] || return 0
-	fw_event ifup "$1"
-}
-
-fw_custom_chains() {
-	[ -n "$CUSTOM_CHAINS" ] || return 0
-	$IPTABLES -N input_rule
-	$IPTABLES -N output_rule
-	$IPTABLES -N forwarding_rule
-	$IPTABLES -N prerouting_rule -t nat
-	$IPTABLES -N postrouting_rule -t nat
-
-	$IPTABLES -A INPUT -j input_rule
-	$IPTABLES -A OUTPUT -j output_rule
-	$IPTABLES -A FORWARD -j forwarding_rule
-	$IPTABLES -A PREROUTING -t nat -j prerouting_rule
-	$IPTABLES -A POSTROUTING -t nat -j postrouting_rule
-}
-
-fw_custom_chains_zone() {
-	local zone="$1"
-
-	[ -n "$CUSTOM_CHAINS" ] || return 0
-	$IPTABLES -N input_${zone}
-	$IPTABLES -N forwarding_${zone}
-	$IPTABLES -N prerouting_${zone} -t nat
-	$IPTABLES -I zone_${zone} 1 -j input_${zone}
-	$IPTABLES -I zone_${zone}_forward 1 -j forwarding_${zone}
-	$IPTABLES -I zone_${zone}_prerouting 1 -t nat -j prerouting_${zone}
-}
-
-fw_check_notrack() {
-	local zone="$1"
-	config_get name "$zone" name
-	[ -n "$NOTRACK_DISABLED" ] || \
-		find_item "$name" $CONNTRACK_ZONES || \
-		$IPTABLES -t raw -A zone_${name}_notrack -j NOTRACK
-}
-
-fw_init() {
-	DEFAULTS_APPLIED=
-
-	echo "Loading defaults"
-	config_foreach fw_defaults defaults
-	echo "Loading zones"
-	config_foreach fw_zone zone
-	echo "Loading forwarding"
-	config_foreach fw_forwarding forwarding
-	echo "Loading redirects"
-	config_foreach fw_redirect redirect
-	echo "Loading rules"
-	config_foreach fw_rule rule
-	echo "Loading includes"
-	config_foreach fw_include include
-	echo "Loading zone defaults"
-	config_foreach fw_zone_defaults zone
-	uci_set_state firewall core loaded 1
-	config_set core loaded 1
-	config_foreach fw_check_notrack zone
-	INTERFACES="$(sh -c '
-		. /etc/functions.sh; config_load network
-		echo_up() { local up; config_get_bool up "$1" up 0; [ $up = 1 ] && echo "$1"; }
-		config_foreach echo_up interface
-	')"
-	for interface in $INTERFACES; do
-		fw_event ifup "$interface"
-	done
-}
-
-fw_stop() {
-	fw_clear
-	$IPTABLES -P INPUT ACCEPT
-	$IPTABLES -P OUTPUT ACCEPT
-	$IPTABLES -P FORWARD ACCEPT
-	uci_revert_state firewall
-}