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-rw-r--r--package/firewall/Makefile12
-rw-r--r--package/firewall/files/20-firewall5
-rw-r--r--package/firewall/files/bin/fw49
-rw-r--r--package/firewall/files/firewall.hotplug19
-rwxr-xr-xpackage/firewall/files/firewall.init21
-rw-r--r--package/firewall/files/lib/config.sh97
-rw-r--r--package/firewall/files/lib/core.sh136
-rw-r--r--package/firewall/files/lib/core_forwarding.sh40
-rw-r--r--package/firewall/files/lib/core_init.sh258
-rw-r--r--package/firewall/files/lib/core_interface.sh86
-rw-r--r--package/firewall/files/lib/core_redirect.sh61
-rw-r--r--package/firewall/files/lib/core_rule.sh66
-rw-r--r--package/firewall/files/lib/fw.sh182
-rw-r--r--package/firewall/files/lib/uci_firewall.sh5
-rwxr-xr-xpackage/firewall/files/uci_firewall.sh530
15 files changed, 1023 insertions, 544 deletions
diff --git a/package/firewall/Makefile b/package/firewall/Makefile
index abc6020434..22d359939f 100644
--- a/package/firewall/Makefile
+++ b/package/firewall/Makefile
@@ -1,5 +1,5 @@
#
-# Copyright (C) 2008-2009 OpenWrt.org
+# Copyright (C) 2008-2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
@@ -8,8 +8,8 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=firewall
-PKG_VERSION:=1
-PKG_RELEASE:=10
+PKG_VERSION:=2
+PKG_RELEASE:=1
include $(INCLUDE_DIR)/package.mk
@@ -36,13 +36,15 @@ endef
define Package/firewall/install
$(INSTALL_DIR) $(1)/lib/firewall
- $(INSTALL_DATA) ./files/uci_firewall.sh $(1)/lib/firewall
+ $(INSTALL_DATA) ./files/lib/*.sh $(1)/lib/firewall
+ $(INSTALL_DIR) $(1)/sbin
+ $(INSTALL_BIN) ./files/bin/fw $(1)/sbin
$(INSTALL_DIR) $(1)/etc/config
$(INSTALL_DATA) ./files/firewall.config $(1)/etc/config/firewall
$(INSTALL_DIR) $(1)/etc/init.d/
$(INSTALL_BIN) ./files/firewall.init $(1)/etc/init.d/firewall
$(INSTALL_DIR) $(1)/etc/hotplug.d/iface
- $(INSTALL_DATA) ./files/20-firewall $(1)/etc/hotplug.d/iface
+ $(INSTALL_DATA) ./files/firewall.hotplug $(1)/etc/hotplug.d/iface/20-firewall
$(INSTALL_DIR) $(1)/etc
$(INSTALL_DATA) ./files/firewall.user $(1)/etc
endef
diff --git a/package/firewall/files/20-firewall b/package/firewall/files/20-firewall
deleted file mode 100644
index 4b89326b51..0000000000
--- a/package/firewall/files/20-firewall
+++ /dev/null
@@ -1,5 +0,0 @@
-. /lib/firewall/uci_firewall.sh
-unset ZONE
-config_get ifname $INTERFACE ifname
-[ "$ifname" == "lo" ] && exit 0
-fw_event "$ACTION" "$INTERFACE"
diff --git a/package/firewall/files/bin/fw b/package/firewall/files/bin/fw
new file mode 100644
index 0000000000..0f83b8eed8
--- /dev/null
+++ b/package/firewall/files/bin/fw
@@ -0,0 +1,49 @@
+#!/bin/sh
+FW_LIBDIR=/lib/firewall
+
+. /etc/functions.sh
+. ${FW_LIBDIR}/fw.sh
+
+case "$(type fw)" in
+ *function) ;;
+ *) exit 255;;
+esac
+
+usage() {
+ echo $0 "<command>" "<family>" "<table>" "<chain>" "<target>" "{" "<rules>" "}"
+ exit 0
+}
+
+cmd=$1
+shift
+case "$cmd" in
+ --help|help) usage ;;
+ start|stop|reload|restart)
+ . ${FW_LIBDIR}/core.sh
+ fw_$cmd
+ exit $?
+ ;;
+esac
+
+fam=$1
+shift
+case "$fam" in
+ ip)
+ fam=i
+ if [ $# -gt 2 ]; then
+ for p in $(seq 2 $(($# - 1))); do
+ if eval "[ \$$p == '}' ]"; then
+ fam=I
+ break
+ fi
+ done
+ fi ;;
+ ip4) fam=4 ;;
+ ip6) fam=6 ;;
+ arp) fam=a ;;
+ eth) fam=e ;;
+ -*) exec $0 $cmd ${fam##*-} "$@" ;;
+esac
+
+fw "$cmd" "$fam" "$@"
+exit $?
diff --git a/package/firewall/files/firewall.hotplug b/package/firewall/files/firewall.hotplug
new file mode 100644
index 0000000000..fa5643a2bf
--- /dev/null
+++ b/package/firewall/files/firewall.hotplug
@@ -0,0 +1,19 @@
+#!/bin/sh
+# This script is executed as part of the hotplug event with
+# HOTPLUG_TYPE=iface, triggered by various scripts when an interface
+# is configured (ACTION=ifup) or deconfigured (ACTION=ifdown). The
+# interface is available as INTERFACE, the real device as DEVICE.
+. /etc/functions.sh
+
+[ "$DEVICE" == "lo" ] && exit 0
+
+. /lib/firewall/core.sh
+fw_is_loaded || exit 0
+fw_init
+
+case "$ACTION" in
+ ifup)
+ fw_configure_interface "$INTERFACE" add "$DEVICE" ;;
+ ifdown)
+ fw_configure_interface "$INTERFACE" del "$DEVICE" ;;
+esac
diff --git a/package/firewall/files/firewall.init b/package/firewall/files/firewall.init
index 26855f39ad..54742488e8 100755
--- a/package/firewall/files/firewall.init
+++ b/package/firewall/files/firewall.init
@@ -3,12 +3,25 @@
START=45
+FW_LIBDIR=/lib/firewall
+
+fw() {
+ . $FW_LIBDIR/core.sh
+ fw_$1
+}
+
start() {
- . /lib/firewall/uci_firewall.sh
- fw_init
+ fw start
}
stop() {
- . /lib/firewall/uci_firewall.sh
- fw_stop
+ fw stop
+}
+
+restart() {
+ fw restart
+}
+
+reload() {
+ fw reload
}
diff --git a/package/firewall/files/lib/config.sh b/package/firewall/files/lib/config.sh
new file mode 100644
index 0000000000..1c5e030961
--- /dev/null
+++ b/package/firewall/files/lib/config.sh
@@ -0,0 +1,97 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2009 Malte S. Stretz <http://msquadrat.de>
+#
+# This is a temporary file, I hope to have some of this stuff merged into
+# /lib/functions.sh (without the fw_ prefix of course) one day.
+
+fw_config_append() { # <package>
+ CONFIG_APPEND=1 config_load "$@"
+ unset CONFIG_APPEND
+}
+
+fw_config_once() { # <function> <type>
+ local func=$1
+ local type=$2
+ shift 2
+
+ local config=cfg00nil
+ fw_config__once() {
+ config=$1
+ }
+ config_foreach fw_config__once "$type"
+
+ $func $config "$@"
+}
+
+fw_config_get_section() { # <config> <prefix> <type> <name> <default> ...
+ local config=$1
+ local prefix=$2
+ shift 2
+
+ [ -n "$config" ] || return 1
+ [ -n "$prefix" ] && {
+ prefix="${prefix}_"
+ export ${NO_EXPORT:+-n} -- "${prefix}NAME"="${config}"
+ config_get "${prefix}TYPE" "$config" TYPE
+ }
+
+ [ "$1" == '{' ] && shift
+ while [ $# -ge 3 ]; do
+ local type=$1
+ local name=$2
+ local dflt=$3
+ shift 3
+ # TODO: Move handling of defaults to /lib/functions.sh
+ # and get replace the case block with the following
+ # two lines:
+ # type=${type#string}
+ # config_get${type:+_${type}} "${prefix}${name}" "$config" "$name" "$dflt" || return
+ case "$type" in
+ string)
+ local tmp
+ config_get tmp "$config" "$name" || return
+ [ -z "$tmp" ] && tmp=$dflt
+ export ${NO_EXPORT:+-n} -- "${prefix}${name}=${tmp}"
+ continue
+ ;;
+ boolean)
+ type=bool
+ ;;
+ esac;
+
+ local cmd=${prefix}config_get_${type}
+ type $cmd > /dev/null || {
+ cmd=config_get_${type}
+ }
+ type $cmd > /dev/null || {
+ echo "config type $type (for $name) not supported" >&2
+ return 1
+ }
+ $cmd "${prefix}${name}" "$config" "$name" "$dflt" || return
+ done
+}
+
+config_get_ipaddr() {
+ local varn=$1
+ local conf=$2
+ local name=$3
+ local dflt=$4
+
+ local addr
+ config_get addr "$conf" "$name" || return
+ [ -n "$addr" ] || addr=$dflt
+
+ local mask=${addr#*/}
+ [ "$mask" != "$addr" ] || mask=
+ addr=${addr%/*}
+
+ local vers=
+ case "$addr" in
+ *.*) vers=4 ;;
+ *:*) vers=6 ;;
+ esac
+
+ export ${NO_EXPORT:+-n} -- "${varn}=${addr}"
+ export ${NO_EXPORT:+-n} -- "${varn}_prefixlen=${mask}"
+ export ${NO_EXPORT:+-n} -- "${varn}_version=${vers}"
+}
diff --git a/package/firewall/files/lib/core.sh b/package/firewall/files/lib/core.sh
new file mode 100644
index 0000000000..3fd98d1602
--- /dev/null
+++ b/package/firewall/files/lib/core.sh
@@ -0,0 +1,136 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+FW_LIBDIR=${FW_LIBDIR:-/lib/firewall}
+
+. $FW_LIBDIR/fw.sh
+include /lib/network
+
+fw_start() {
+ fw_init
+
+ FW_DEFAULTS_APPLIED=
+
+ fw_is_loaded && {
+ echo "firewall already loaded" >&2
+ exit 1
+ }
+ uci_set_state firewall core "" firewall_state
+
+ fw_clear DROP
+
+ fw_callback pre core
+
+ echo "Loading defaults"
+ fw_config_once fw_load_defaults defaults
+
+ echo "Loading zones"
+ config_foreach fw_load_zone zone
+
+ echo "Loading forwardings"
+ config_foreach fw_load_forwarding forwarding
+
+ echo "Loading redirects"
+ config_foreach fw_load_redirect redirect
+
+ echo "Loading rules"
+ config_foreach fw_load_rule rule
+
+ echo "Loading includes"
+ config_foreach fw_load_include include
+
+ [ -n "$FW_NOTRACK_DISABLED" ] && {
+ echo "Optimizing conntrack"
+ config_foreach fw_load_notrack_zone zone
+ }
+
+ echo "Loading interfaces"
+ config_foreach fw_configure_interface interface add
+
+ fw_callback post core
+
+ uci_set_state firewall core loaded 1
+}
+
+fw_stop() {
+ fw_init
+
+ fw_callback pre stop
+
+ fw_clear ACCEPT
+
+ fw_callback post stop
+
+ uci_revert_state firewall
+ config_clear
+ unset FW_INITIALIZED
+}
+
+fw_restart() {
+ fw_stop
+ fw_start
+}
+
+fw_reload() {
+ fw_restart
+}
+
+fw_is_loaded() {
+ local bool
+ config_get_bool bool core loaded 0
+ return $((! $bool))
+}
+
+
+fw_die() {
+ echo "Error:" "$@" >&2
+ fw_log error "$@"
+ fw_stop
+ exit 1
+}
+
+fw_log() {
+ local level="$1"
+ [ -n "$2" ] || {
+ shift
+ level=notice
+ }
+ logger -t firewall -p user.$level "$@"
+}
+
+
+fw_init() {
+ [ -z "$FW_INITIALIZED" ] || return 0
+
+ . $FW_LIBDIR/config.sh
+
+ scan_interfaces
+ fw_config_append firewall
+
+ local hooks="core stop defaults zone notrack synflood"
+ local file lib hk pp
+ for file in $FW_LIBDIR/core_*.sh; do
+ . $file
+ hk=$(basename $file .sh)
+ hk=${hk#core_}
+ append hooks $hk
+ done
+ for file in $FW_LIBDIR/*.sh; do
+ lib=$(basename $file .sh)
+ lib=${lib##[0-9][0-9]_}
+ case $lib in
+ core*|fw|config|uci_firewall) continue ;;
+ esac
+ . $file
+ for hk in $hooks; do
+ for pp in pre post; do
+ type ${lib}_${pp}_${hk}_cb >/dev/null &&
+ append FW_CB_${pp}_${hk} ${lib}
+ done
+ done
+ done
+
+ fw_callback post init
+
+ FW_INITIALIZED=1
+ return 0
+}
diff --git a/package/firewall/files/lib/core_forwarding.sh b/package/firewall/files/lib/core_forwarding.sh
new file mode 100644
index 0000000000..766e48e38e
--- /dev/null
+++ b/package/firewall/files/lib/core_forwarding.sh
@@ -0,0 +1,40 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_forwarding() {
+ [ "${forwarding_NAME}" != "$1" ] || return
+ fw_config_get_section "$1" forwarding { \
+ string _name "$1" \
+ string name "" \
+ string src "" \
+ string dest "" \
+ } || return
+ [ -n "$forwarding_name" ] || forwarding_name=$forwarding__name
+}
+
+fw_load_forwarding() {
+ fw_config_get_forwarding "$1"
+
+ fw_callback pre forwarding
+
+ local chain=forward
+ [ -n "$forwarding_src" ] && {
+ chain=zone_${forwarding_src}_forward
+ }
+
+ local target=ACCEPT
+ [ -n "$forwarding_dest" ] && {
+ target=zone_${forwarding_dest}_ACCEPT
+ }
+
+ fw add i f $chain $target ^
+
+ # propagate masq zone flag
+ [ -n "$forwarding_src" ] && list_contains CONNTRACK_ZONES $forwarding_src && {
+ append CONNTRACK_ZONES $forwarding_dest
+ }
+ [ -n "$forwarding_dest" ] && list_contains CONNTRACK_ZONES $forwarding_dest && {
+ append CONNTRACK_ZONES $forwarding_src
+ }
+
+ fw_callback post forwarding
+}
diff --git a/package/firewall/files/lib/core_init.sh b/package/firewall/files/lib/core_init.sh
new file mode 100644
index 0000000000..82939b9416
--- /dev/null
+++ b/package/firewall/files/lib/core_init.sh
@@ -0,0 +1,258 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2008 John Crispin <blogic@openwrt.org>
+
+FW_INITIALIZED=
+
+FW_ZONES=
+FW_CONNTRACK_ZONES=
+FW_NOTRACK_DISABLED=
+
+FW_DEFAULTS_APPLIED=
+FW_ADD_CUSTOM_CHAINS=
+FW_ACCEPT_REDIRECTS=
+FW_ACCEPT_SRC_ROUTE=
+
+FW_DEFAULT_INPUT_POLICY=REJECT
+FW_DEFAULT_OUTPUT_POLICY=REJECT
+FW_DEFAULT_FORWARD_POLICY=REJECT
+
+
+fw_load_defaults() {
+ fw_config_get_section "$1" defaults { \
+ string input $FW_DEFAULT_INPUT_POLICY \
+ string output $FW_DEFAULT_OUTPUT_POLICY \
+ string forward $FW_DEFAULT_FORWARD_POLICY \
+ boolean drop_invalid 0 \
+ boolean syn_flood 0 \
+ boolean synflood_protect 0 \
+ string synflood_rate 25 \
+ string synflood_burst 50 \
+ boolean tcp_syncookies 1 \
+ boolean tcp_ecn 0 \
+ boolean tcp_westwood 0 \
+ boolean tcp_window_scaling 1 \
+ boolean accept_redirects 0 \
+ boolean accept_source_route 0 \
+ boolean custom_chains 1 \
+ } || return
+ [ -n "$FW_DEFAULTS_APPLIED" ] && {
+ echo "Error: multiple defaults sections detected"
+ return 1
+ }
+ FW_DEFAULTS_APPLIED=1
+
+ FW_DEFAULT_INPUT_POLICY=$defaults_input
+ FW_DEFAULT_OUTPUT_POLICY=$defaults_output
+ FW_DEFAULT_FORWARD_POLICY=$defaults_forward
+
+ FW_ADD_CUSTOM_CHAINS=$defaults_custom_chains
+
+ FW_ACCEPT_REDIRECTS=$defaults_accept_redirects
+ FW_ACCEPT_SRC_ROUTE=$defaults_accept_source_route
+
+ fw_callback pre defaults
+
+ # Seems like there are only one sysctl for both IP versions.
+ for s in syncookies ecn westwood window_scaling; do
+ eval "sysctl -e -w net.ipv4.tcp_${s}=\$defaults_tcp_${s}" >/dev/null
+ done
+ fw_sysctl_interface all
+
+ [ $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_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 }
+
+ # Compatibility to old 'syn_flood' parameter
+ [ $defaults_syn_flood == 1 ] && \
+ defaults_synflood_protect=1
+
+ [ $defaults_synflood_protect == 1 ] && {
+ echo "Loading synflood protection"
+ fw_callback pre synflood
+ fw add i f syn_flood
+ fw add i f syn_flood RETURN { \
+ -p tcp --syn \
+ -m limit --limit "${defaults_synflood_rate}/second" --limit-burst "${defaults_synflood_burst}" \
+ }
+ fw add i f syn_flood DROP
+ fw add i f INPUT syn_flood { -p tcp --syn }
+ fw_callback post synflood
+ }
+
+ [ $defaults_custom_chains == 1 ] && {
+ echo "Adding custom chains"
+ fw add i f input_rule
+ fw add i f output_rule
+ fw add i f forwarding_rule
+ fw add i n prerouting_rule
+ fw add i n postrouting_rule
+
+ fw add i f INPUT input_rule
+ fw add i f OUTPUT output_rule
+ fw add i f FORWARD forwarding_rule
+ fw add i n PREROUTING prerouting_rule
+ fw add i n POSTROUTING postrouting_rule
+ }
+
+ fw add i f input
+ fw add i f output
+ fw add i f forward
+
+ fw add i f INPUT input
+ fw add i f OUTPUT output
+ fw add i f FORWARD forward
+
+ fw add i f reject
+ fw add i f reject REJECT { --reject-with tcp-reset -p tcp }
+ fw add i f reject REJECT { --reject-with port-unreach }
+
+ fw_set_filter_policy
+
+ fw_callback post defaults
+}
+
+
+fw_config_get_zone() {
+ [ "${zone_NAME}" != "$1" ] || return
+ fw_config_get_section "$1" zone { \
+ string name "$1" \
+ string network "" \
+ string input "$FW_DEFAULT_INPUT_POLICY" \
+ string output "$FW_DEFAULT_OUTPUT_POLICY" \
+ string forward "$FW_DEFAULT_FORWARD_POLICY" \
+ boolean masq 0 \
+ boolean conntrack 0 \
+ boolean mtu_fix 0 \
+ boolean custom_chains "$FW_ADD_CUSTOM_CHAINS" \
+ } || return
+ [ -n "$zone_name" ] || zone_name=$zone_NAME
+ [ -n "$zone_network" ] || zone_network=$zone_name
+}
+
+fw_load_zone() {
+ fw_config_get_zone "$1"
+
+ list_contains FW_ZONES $zone_name && {
+ fw_die "zone ${zone_name}: duplicated zone"
+ }
+ append FW_ZONES $zone_name
+
+ fw_callback pre zone
+
+ [ $zone_conntrack = 1 -o $zone_masq = 1 ] && \
+ append FW_CONNTRACK_ZONES "$zone_NAME"
+
+ 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
+
+ # TODO: Rename to ${chain}_input
+ fw add i f ${chain}
+ fw add i f ${chain} ${chain}_${zone_input} $
+
+ fw add i f ${chain}_forward
+ fw add i f ${chain}_forward ${chain}_${zone_forward} $
+
+ # TODO: add ${chain}_output
+ fw add i f output ${chain}_${zone_output} $
+
+ # TODO: Rename to ${chain}_MASQUERADE
+ fw add i n ${chain}_nat
+ fw add i n ${chain}_prerouting
+
+ fw add i r ${chain}_notrack
+ [ $zone_masq == 1 ] && \
+ fw add i n POSTROUTING ${chain}_nat $
+
+ [ $zone_mtu_fix == 1 ] && \
+ fw add i f FORWARD ${chain}_MSSFIX ^
+
+ [ $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 i f forwarding_${zone_name}
+ fw add i f ${chain}_forward forwarding_${zone_name} ^
+
+ fw add i n prerouting_${zone_name}
+ fw add i n ${chain}_prerouting prerouting_${zone_name} ^
+ }
+
+ fw_callback post zone
+}
+
+fw_load_notrack_zone() {
+ list_contains FW_CONNTRACK_ZONES "$1" && return
+
+ fw_config_get_zone "$1"
+
+ fw_callback pre notrack
+
+ fw add i f zone_${zone_name}_notrack NOTRACK $
+
+ fw_callback post notrack
+}
+
+
+fw_load_include() {
+ local name="$1"
+
+ local path; config_get path ${name} path
+ [ -e $path ] && . $path
+}
+
+
+fw_clear() {
+ local policy=$1
+
+ fw_set_filter_policy $policy
+
+ local tab
+ for tab in f n r; do
+ fw del i $tab
+ done
+}
+
+fw_set_filter_policy() {
+ local policy=$1
+
+ local chn tgt
+ for chn in INPUT OUTPUT FORWARD; do
+ eval "tgt=\${policy:-\${FW_DEFAULT_${chn}_POLICY}}"
+ [ $tgt == "REJECT" ] && tgt=reject
+ [ $tgt == "ACCEPT" -o $tgt == "DROP" ] || {
+ fw add i f $chn $tgt $
+ tgt=DROP
+ }
+ fw policy i f $chn $tgt
+ done
+}
+
+
+fw_callback() {
+ local pp=$1
+ local hk=$2
+
+ local libs lib
+ eval "libs=\$FW_CB_${pp}_${hk}"
+ [ -n "$libs" ] || return
+ for lib in $libs; do
+ ${lib}_${pp}_${hk}_cb
+ done
+}
diff --git a/package/firewall/files/lib/core_interface.sh b/package/firewall/files/lib/core_interface.sh
new file mode 100644
index 0000000000..9da6739f0e
--- /dev/null
+++ b/package/firewall/files/lib/core_interface.sh
@@ -0,0 +1,86 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_configure_interface() {
+ local iface=$1
+ local action=$2
+ local ifname=$3
+
+ local status;
+ config_get_bool status "$iface" up "0"
+ [ "$status" == 1 ] || return 0
+
+ [ -n "$ifname" ] || {
+ config_get ifname "$iface" ifname
+ ifname=${ifname:-$iface}
+ }
+ [ "$ifname" == "lo" ] && return 0
+
+ fw_callback pre interface
+
+ fw__do_rules() {
+ local action=$1
+ local chain=$2
+ local ifname=$3
+
+ fw $action i f ${chain}_ACCEPT ACCEPT ^ { -o "$ifname" }
+ fw $action i f ${chain}_ACCEPT ACCEPT ^ { -i "$ifname" }
+ fw $action i f ${chain}_DROP DROP ^ { -o "$ifname" }
+ fw $action i f ${chain}_DROP DROP ^ { -i "$ifname" }
+ fw $action i f ${chain}_REJECT reject ^ { -o "$ifname" }
+ fw $action i f ${chain}_REJECT reject ^ { -i "$ifname" }
+
+ fw $action i n ${chain}_nat MASQUERADE ^ { -o "$ifname" }
+ fw $action i f ${chain}_MSSFIX TCPMSS ^ { -o "$ifname" -p tcp --tcp-flags SYN,RST SYN --clamp-mss-to-pmtu }
+
+ fw $action i f input ${chain} $ { -i "$ifname" }
+ fw $action i f forward ${chain}_forward $ { -i "$ifname" }
+ fw $action i n PREROUTING ${chain}_prerouting ^ { -i "$ifname" }
+ fw $action i r PREROUTING ${chain}_notrack ^ { -i "$ifname" }
+ }
+
+ local old_zones old_ifname
+ config_get old_zones core "${iface}_zone"
+ [ -n "$old_zones" ] && {
+ config_get old_ifname core "${iface}_ifname"
+ for z in $old_zones; do
+ fw_log info "removing $iface ($old_ifname) from zone $z"
+ fw__do_rules del zone_$z $old_ifname
+
+ ACTION=remove ZONE="$z" INTERFACE="$iface" DEVICE="$ifname" /sbin/hotplug-call firewall
+ done
+ uci_revert_state firewall core "${iface}_zone"
+ uci_revert_state firewall core "${iface}_ifname"
+ }
+ [ "$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) to zone $zone_name"
+ fw__do_rules add zone_${zone_name} "$ifname"
+ append new_zones $zone_name
+
+ ACTION=add ZONE="$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"
+
+ fw_sysctl_interface $ifname
+
+ fw_callback post interface
+}
+
+fw_sysctl_interface() {
+ local ifname=$1
+ {
+ sysctl -w net.ipv4.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
+ sysctl -w net.ipv6.conf.${ifname}.accept_redirects=$FW_ACCEPT_REDIRECTS
+ sysctl -w net.ipv4.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
+ sysctl -w net.ipv6.conf.${ifname}.accept_source_route=$FW_ACCEPT_SRC_ROUTE
+ } >/dev/null 2>/dev/null
+}
+
diff --git a/package/firewall/files/lib/core_redirect.sh b/package/firewall/files/lib/core_redirect.sh
new file mode 100644
index 0000000000..0f0ccffe00
--- /dev/null
+++ b/package/firewall/files/lib/core_redirect.sh
@@ -0,0 +1,61 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_redirect() {
+ [ "${redirect_NAME}" != "$1" ] || return
+ fw_config_get_section "$1" redirect { \
+ string _name "$1" \
+ string name "" \
+ string src "" \
+ ipaddr src_ip "" \
+ ipaddr src_dip "" \
+ string src_mac "" \
+ string src_port "" \
+ string src_dport "" \
+ string dest "" \
+ ipaddr dest_ip "" \
+ string dest_mac "" \
+ string dest_port "" \
+ string proto "tcpudp" \
+ } || return
+ [ -n "$redirect_name" ] || redirect_name=$redirect__name
+}
+
+fw_load_redirect() {
+ fw_config_get_redirect "$1"
+
+ fw_callback pre redirect
+
+ [ -n "$redirect_src" -a -n "$redirect_dest_ip" ] || {
+ fw_die "redirect ${redirect_name}: needs src and dest_ip"
+ }
+
+ local nat_dest_port=$redirect_dest_port
+ redirect_dest_port=$(fw_get_port_range $redirect_dest_port)
+ redirect_src_port=$(fw_get_port_range $redirect_src_port)
+ redirect_src_dport=$(fw_get_port_range $redirect_src_dport)
+ local fwd_dest_port=${redirect_dest_port:-$redirect_src_dport}
+
+ [ "$redirect_proto" == "tcpudp" ] && redirect_proto="tcp udp"
+ for redirect_proto in $redirect_proto; do
+ fw add I n zone_${redirect_src}_prerouting DNAT $ { $redirect_src_ip $redirect_dest_ip } { \
+ ${redirect_proto:+-p $redirect_proto} \
+ ${redirect_src_ip:+-s $redirect_src_ip} \
+ ${redirect_src_dip:+-d $redirect_src_dip} \
+ ${redirect_src_port:+--sport $redirect_src_port} \
+ ${redirect_src_dport:+--dport $redirect_src_dport} \
+ ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
+ --to-destination ${redirect_dest_ip}${redirect_dest_port:+:$nat_dest_port} \
+ }
+
+ fw add I f zone_${redirect_src}_forward ACCEPT ^ { $redirect_src_ip $redirect_dest_ip } { \
+ -d $redirect_dest_ip \
+ ${redirect_proto:+-p $redirect_proto} \
+ ${redirect_src_ip:+-s $redirect_src_ip} \
+ ${redirect_src_port:+--sport $redirect_src_port} \
+ ${fwd_dest_port:+--dport $fwd_dest_port} \
+ ${redirect_src_mac:+-m mac --mac-source $redirect_src_mac} \
+ }
+ done
+
+ fw_callback post redirect
+}
diff --git a/package/firewall/files/lib/core_rule.sh b/package/firewall/files/lib/core_rule.sh
new file mode 100644
index 0000000000..e6a276e5f3
--- /dev/null
+++ b/package/firewall/files/lib/core_rule.sh
@@ -0,0 +1,66 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+
+fw_config_get_rule() {
+ [ "${rule_NAME}" != "$1" ] || return
+ fw_config_get_section "$1" rule { \
+ string _name "$1" \
+ string name "" \
+ string src "" \
+ ipaddr src_ip "" \
+ string src_mac "" \
+ string src_port "" \
+ string dest "" \
+ ipaddr dest_ip "" \
+ string dest_mac "" \
+ string dest_port "" \
+ string icmp_type "" \
+ string proto "tcpudp" \
+ string target "" \
+ } || return
+ [ -n "$rule_name" ] || rule_name=$rule__name
+ [ "$rule_proto" == "icmp" ] || rule_icmp_type=
+}
+
+fw_load_rule() {
+ fw_config_get_rule "$1"
+
+ fw_callback pre rule
+
+ rule_src_port=$(fw_get_port_range $rule_src_port)
+ rule_dest_port=$(fw_get_port_range $rule_dest_port)
+
+ local chain=input
+ [ -n "$rule_src" ] && {
+ [ -z "$rule_dest" ] && {
+ chain=zone_${rule_src}
+ } || {
+ chain=zone_${rule_src}_forward
+ }
+ }
+
+ local target=$rule_target
+ [ -z "$target" ] && {
+ target=REJECT
+ }
+ [ -n "$dest" ] && {
+ target=zone_${rule_dest}_${target}
+ }
+
+ local rule_pos
+ eval 'rule_pos=$((++FW__RULE_COUNT_'$chain'))'
+
+ [ "$rule_proto" == "tcpudp" ] && rule_proto="tcp udp"
+ for rule_proto in $rule_proto; do
+ fw add I f $chain $target $rule_pos { $rule_src_ip $rule_dest_ip } { \
+ ${rule_proto:+-p $rule_proto} \
+ ${rule_src_ip:+-s $rule_src_ip} \
+ ${rule_src_port:+--sport $rule_src_port} \
+ ${rule_src_mac:+-m mac --mac-source $rule_src_mac} \
+ ${rule_dest_ip:+-d $rule_dest_ip} \
+ ${rule_dest_port:+--dport $rule_dest_port} \
+ ${rule_icmp_type:+--icmp-type $rule_icmp_type} \
+ }
+ done
+
+ fw_callback post rule
+}
diff --git a/package/firewall/files/lib/fw.sh b/package/firewall/files/lib/fw.sh
new file mode 100644
index 0000000000..c06e864236
--- /dev/null
+++ b/package/firewall/files/lib/fw.sh
@@ -0,0 +1,182 @@
+# Copyright (C) 2009-2010 OpenWrt.org
+# Copyright (C) 2009 Malte S. Stretz
+
+export FW_4_ERROR=0
+export FW_6_ERROR=0
+export FW_i_ERROR=0
+export FW_e_ERROR=0
+export FW_a_ERROR=0
+
+#TODO: remove this
+[ "${-#*x}" == "$-" ] && {
+ fw() {
+ fw__exec "$@"
+ }
+} || {
+ fw() {
+ local os=$-
+ set +x
+ fw__exec "$@"
+ local rc=$?
+ set -$os
+ return $rc
+ }
+}
+
+fw__exec() { # <action> <family> <table> <chain> <target> <position> { <rules> }
+ local cmd fam tab chn tgt pos
+ local i
+ for i in cmd fam tab chn tgt pos; do
+ if [ "$1" -a "$1" != '{' ]; then
+ eval "$i='$1'"
+ shift
+ else
+ eval "$i=-"
+ fi
+ done
+
+ fw__rc() {
+ export FW_${fam}_ERROR=$1
+ return $1
+ }
+
+ fw__dualip() {
+ fw $cmd 4 $tab $chn $tgt $pos "$@"
+ fw $cmd 6 $tab $chn $tgt $pos "$@"
+ fw__rc $((FW_4_ERROR | FW_6_ERROR))
+ }
+
+ fw__autoip() {
+ local ip4 ip6
+ shift
+ while [ "$1" != '}' ]; do
+ case "$1" in
+ *.*.*.*) ip4=1 ;;
+ *:*) ip6=1 ;;
+ esac
+ shift
+ done
+ shift
+ if [ "${ip4:-4}" == "${ip6:-6}" ]; then
+ echo "fw: can't mix ip4 and ip6" >&2
+ return 1
+ fi
+ local ver=${ip4:+4}${ip6:+6}
+ fam=i
+ fw $cmd ${ver:-i} $tab $chn $tgt $pos "$@"
+ fw__rc $?
+ }
+
+ fw__has() {
+ local tab=${1:-$tab}
+ if [ $tab == '-' ]; then
+ type $app > /dev/null 2> /dev/null
+ fw__rc $(($? & 1))
+ return
+ fi
+ local mod
+ eval "mod=\$FW_${fam}_${tab}"
+ if [ "$mod" ]; then
+ fw__rc $mod
+ return
+ fi
+ case "$fam" in
+ 4) mod=iptable_${tab} ;;
+ 6) mod=ip6table_${tab} ;;
+ *) mod=. ;;
+ esac
+ grep "^${mod} " /proc/modules > /dev/null
+ mod=$?
+ export FW_${fam}_${tab}=$mod
+ fw__rc $mod
+ }
+
+ fw__err() {
+ local err
+ eval "err=\$FW_${fam}_ERROR"
+ fw__rc $err
+ }
+
+ local app=
+ local pol=
+ case "$fam" in
+ 4) app=iptables ;;
+ 6) app=ip6tables ;;
+ i) fw__dualip "$@"; return ;;
+ I) fw__autoip "$@"; return ;;
+ e) app=ebtables ;;
+ a) app=arptables ;;
+ -) fw $cmd i $tab $chn $tgt $pos "$@"; return ;;
+ *) return 254 ;;
+ esac
+ case "$tab" in
+ f) tab=filter ;;
+ m) tab=mangle ;;
+ n) tab=nat ;;
+ r) tab=raw ;;
+ -) tab=filter ;;
+ esac
+ case "$cmd:$chn:$tgt:$pos" in
+ add:*:-:*) cmd=new-chain ;;
+ add:*:*:-) cmd=append ;;
+ add:*:*:$) cmd=append ;;
+ add:*:*:*) cmd=insert ;;
+ del:-:*:*) cmd=delete-chain; fw flush $fam $tab ;;
+ del:*:-:*) cmd=delete-chain; fw flush $fam $tab $chn ;;
+ del:*:*:*) cmd=delete ;;
+ flush:*) ;;
+ policy:*) pol=$tgt; tgt=- ;;
+ has:*) fw__has; return ;;
+ err:*) fw__err; return ;;
+ list:*) cmd="numeric --verbose --$cmd" ;;
+ *) return 254 ;;
+ esac
+ case "$chn" in
+ -) chn= ;;
+ esac
+ case "$tgt" in
+ -) tgt= ;;
+ esac
+ case "$pos" in
+ ^) pos=1 ;;
+ $) pos= ;;
+ -) pos= ;;
+ esac
+
+ if ! fw__has - family || ! fw__has $tab ; then
+ export FW_${fam}_ERROR=0
+ return 0
+ fi
+
+ if [ $# -gt 0 ]; then
+ shift
+ if [ $cmd == del ]; then
+ pos=-
+ fi
+ fi
+ while [ $# -gt 1 ]; do
+ echo -n "$1"
+ echo -ne "\0"
+ shift
+ done | xargs -0 ${FW_TRACE:+-t} \
+ $app --table ${tab} --${cmd} ${chn} ${pol} ${pos} ${tgt:+--jump "$tgt"}
+ fw__rc $?
+}
+
+fw_get_port_range() {
+ local ports=$1
+ local delim=${2:-:}
+ if [ "$3" ]; then
+ fw_get_port_range "${ports}-${3}" $delim
+ return
+ fi
+
+ local first=${ports%-*}
+ local last=${ports#*-}
+ if [ "$first" != "$last" ]; then
+ echo "$first$delim$last"
+ else
+ echo "$first"
+ fi
+}
+
diff --git a/package/firewall/files/lib/uci_firewall.sh b/package/firewall/files/lib/uci_firewall.sh
new file mode 100644
index 0000000000..7c95a7a939
--- /dev/null
+++ b/package/firewall/files/lib/uci_firewall.sh
@@ -0,0 +1,5 @@
+# This file is here for backwards compatibility and to override the
+# uci_firewall.sh from an earlier version.
+type fw_is_loaded >/dev/null || {
+ . /lib/firewall/core.sh
+}
diff --git a/package/firewall/files/uci_firewall.sh b/package/firewall/files/uci_firewall.sh
deleted file mode 100755
index 8d7538201b..0000000000
--- a/package/firewall/files/uci_firewall.sh
+++ /dev/null
@@ -1,530 +0,0 @@
-#!/bin/sh
-# Copyright (C) 2008 John Crispin <blogic@openwrt.org>
-
-. /etc/functions.sh
-
-IPTABLES="echo iptables"
-IPTABLES=iptables
-
-config_clear
-include /lib/network
-scan_interfaces
-
-CONFIG_APPEND=1
-config_load firewall
-
-config fw_zones
-ZONE_LIST=$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
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-02 20:28:08 +0000