mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-12 01:47:30 +02:00
fe72fdb022
git-svn-id: svn://svn.openwrt.org/openwrt/branches/backfire@25353 3c298f89-4303-0410-b956-a3cf2f4a3e73
230 lines
4.4 KiB
Bash
230 lines
4.4 KiB
Bash
# 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#G}_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 "$1" in
|
|
*:*) ip6=1 ;;
|
|
*.*.*.*) ip4=1 ;;
|
|
esac
|
|
shift
|
|
done
|
|
shift
|
|
if [ "${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_${fam#G}_${tab}"
|
|
if [ "$mod" ]; then
|
|
fw__rc $mod
|
|
return
|
|
fi
|
|
case "$fam" in
|
|
*4) mod=iptable_${tab} ;;
|
|
*6) mod=ip6table_${tab} ;;
|
|
*) mod=. ;;
|
|
esac
|
|
grep -q "^${mod} " /proc/modules
|
|
mod=$?
|
|
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) [ $FW_DISABLE_IPV4 == 0 ] && app=iptables || return ;;
|
|
*6) [ $FW_DISABLE_IPV6 == 0 ] && app=ip6tables || return ;;
|
|
i) fw__dualip "$@"; 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
|
|
|
|
case "$fam" in
|
|
G*) shift; while [ $# -gt 0 ] && [ "$1" != "{" ]; do shift; done ;;
|
|
esac
|
|
|
|
if [ $# -gt 0 ]; then
|
|
shift
|
|
if [ $cmd == delete ]; then
|
|
pos=
|
|
fi
|
|
fi
|
|
|
|
local cmdline="$app --table ${tab} --${cmd} ${chn} ${pol} ${pos} ${tgt:+--jump "$tgt"}"
|
|
while [ $# -gt 1 ]; do
|
|
case "$app:$1" in
|
|
ip6tables:--icmp-type) cmdline="$cmdline --icmpv6-type" ;;
|
|
ip6tables:icmp|ip6tables:ICMP) cmdline="$cmdline icmpv6" ;;
|
|
iptables:--icmpv6-type) cmdline="$cmdline --icmp-type" ;;
|
|
iptables:icmpv6) cmdline="$cmdline icmp" ;;
|
|
*) cmdline="$cmdline $1" ;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
[ -n "$FW_TRACE" ] && echo $cmdline >&2
|
|
|
|
$cmdline
|
|
|
|
fw__rc $?
|
|
}
|
|
|
|
fw_get_port_range() {
|
|
local _var=$1
|
|
local _ports=$2
|
|
local _delim=${3:-:}
|
|
if [ "$4" ]; then
|
|
fw_get_port_range $_var "${_ports}-${4}" $_delim
|
|
return
|
|
fi
|
|
|
|
local _first=${_ports%-*}
|
|
local _last=${_ports#*-}
|
|
if [ "$_first" != "$_last" ]; then
|
|
export -- "$_var=$_first$_delim$_last"
|
|
else
|
|
export -- "$_var=$_first"
|
|
fi
|
|
}
|
|
|
|
fw_get_family_mode() {
|
|
local _var="$1"
|
|
local _hint="$2"
|
|
local _zone="$3"
|
|
local _mode="$4"
|
|
|
|
local _ipv4 _ipv6
|
|
[ -n "$FW_ZONES4$FW_ZONES6" ] && {
|
|
list_contains FW_ZONES4 $_zone && _ipv4=1 || _ipv4=0
|
|
list_contains FW_ZONES6 $_zone && _ipv6=1 || _ipv6=0
|
|
} || {
|
|
_ipv4=$(uci_get_state firewall core ${_zone}_ipv4 0)
|
|
_ipv6=$(uci_get_state firewall core ${_zone}_ipv6 0)
|
|
}
|
|
|
|
case "$_hint:$_ipv4:$_ipv6" in
|
|
*4:1:*|*:1:0) export -n -- "$_var=G4" ;;
|
|
*6:*:1|*:0:1) export -n -- "$_var=G6" ;;
|
|
*) export -n -- "$_var=$_mode" ;;
|
|
esac
|
|
}
|
|
|
|
fw_get_negation() {
|
|
local _var="$1"
|
|
local _flag="$2"
|
|
local _ipaddr="$3"
|
|
|
|
[ "${_ipaddr#!}" != "$_ipaddr" ] && \
|
|
export -n -- "$_var=! $_flag ${_ipaddr#!}" || \
|
|
export -n -- "$_var=${_ipaddr:+$_flag $_ipaddr}"
|
|
}
|