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nftables support

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This commit is contained in:
bol-van
2022-02-15 17:15:36 +03:00
parent b7aa3a878c
commit 95667733a6
35 changed files with 3099 additions and 2000 deletions
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34
init.d/openwrt/90-zapret
View File

@@ -2,7 +2,7 @@
ZAPRET=/etc/init.d/zapret
[ "$ACTION" = "ifup" ] && [ -x "$ZAPRET" ] && "$ZAPRET" enabled && {
[ -n "$INTERFACE" -a -n "$ACTION" -a -x "$ZAPRET" ] && "$ZAPRET" enabled && {
SCRIPT=$(readlink "$ZAPRET")
if [ -n "$SCRIPT" ]; then
EXEDIR=$(dirname "$SCRIPT")
@@ -11,11 +11,29 @@ ZAPRET=/etc/init.d/zapret
ZAPRET_BASE=/opt/zapret
fi
. "$ZAPRET_BASE/config"
[ -n "$OPENWRT_LAN" ] || OPENWRT_LAN=lan
for lan in $OPENWRT_LAN; do
[ "$INTERFACE" = "$lan" ] && {
"$ZAPRET" restart
break
}
done
[ "$ACTION" = "ifup" ] && {
[ -n "$OPENWRT_LAN" ] || OPENWRT_LAN=lan
for lan in $OPENWRT_LAN; do
[ "$INTERFACE" = "$lan" ] && {
logger -t zapret restarting daemons due to $ACTION of $INTERFACE
"$ZAPRET" restart_daemons
break
}
done
}
. "$ZAPRET_BASE/common/base.sh"
. "$ZAPRET_BASE/common/fwtype.sh"
linux_fwtype
case "$FWTYPE" in
nftables)
logger -t zapret reloading nftables ifsets due to $ACTION of $INTERFACE
"$ZAPRET" reload_ifsets
;;
iptables)
openwrt_fw3 || {
logger -t zapret reloading iptables due to $ACTION of $INTERFACE
"$ZAPRET" restart_fw
}
;;
esac
}

13
init.d/openwrt/custom
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@@ -4,6 +4,8 @@
zapret_custom_daemons()
{
# stop logic is managed by procd
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Start daemon\(s\)
@@ -13,8 +15,19 @@ zapret_custom_daemons()
}
zapret_custom_firewall()
{
# $1 - 1 - run, 0 - stop
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure iptables for required actions
echo Study how other sections work
}
zapret_custom_firewall_nft()
{
# stop logic is not required
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure nftables for required actions
echo Study how other sections work
}

30
init.d/openwrt/custom-tpws4http-nfqws4https
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@@ -3,6 +3,8 @@
zapret_custom_daemons()
{
# stop logic is managed by procd
local opt
[ "$MODE_HTTP" = "1" ] && {
@@ -19,6 +21,8 @@ zapret_custom_daemons()
}
zapret_custom_firewall()
{
# $1 - 1 - run, 0 - stop
local f4 f6
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
@@ -27,13 +31,35 @@ zapret_custom_firewall()
f4="--dport 80"
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws "$f4" "$f6" $TPPORT
fw_tpws $1 "$f4" "$f6" $TPPORT
}
[ "$MODE_HTTPS" = "1" ] && {
f4="--dport 443 $first_packet_only"
f6=$f4
filter_apply_ipset_target f4 f6
fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
fw_nfqws_post $1 "$f4 $desync" "$f6 $desync" $QNUM
}
}
zapret_custom_firewall_nft()
{
# stop logic is not required
local f4 f6
local first_packet_only="ct original packets 1-4"
local desync="mark and $DESYNC_MARK == 0"
[ "$MODE_HTTP" = "1" ] && {
f4="tcp dport 80"
f6=$f4
nft_filter_apply_ipset_target f4 f6
nft_fw_tpws "$f4" "$f6" $TPPORT
}
[ "$MODE_HTTPS" = "1" ] && {
f4="tcp dport 443 $first_packet_only"
f6=$f4
nft_filter_apply_ipset_target f4 f6
nft_fw_nfqws_post "$f4 $desync" "$f6 $desync" $QNUM
}
}

20
init.d/openwrt/custom.default Normal file
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@@ -0,0 +1,20 @@
# this script contain your special code to launch daemons and configure firewall
# use helpers from "functions" file and "zapret" init script
# in case of upgrade keep this file only, do not modify others
zapret_custom_daemons()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Start daemon\(s\)
echo Study how other sections work
run_daemon 1 /bin/sleep 20
}
zapret_custom_firewall()
{
# PLACEHOLDER
echo !!! NEED ATTENTION !!!
echo Configure iptables for required actions
echo Study how other sections work
}

695
init.d/openwrt/functions
View File

@@ -2,14 +2,22 @@
[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
. "$ZAPRET_BASE/config"
. "$ZAPRET_BASE/common/base.sh"
. "$ZAPRET_BASE/common/fwtype.sh"
. "$ZAPRET_BASE/common/queue.sh"
. "$ZAPRET_BASE/common/linux_iphelper.sh"
. "$ZAPRET_BASE/common/ipt.sh"
. "$ZAPRET_BASE/common/nft.sh"
. "$ZAPRET_BASE/common/linux_fw.sh"
[ -n "$QNUM" ] || QNUM=200
[ -n "$TPPORT" ] || TPPORT=988
[ -n "$WS_USER" ] || WS_USER=daemon
TPWS_LOCALHOST4=127.0.0.127
[ -n "$DESYNC_MARK" ] || DESYNC_MARK=0x40000000
[ -n "$OPENWRT_LAN" ] || OPENWRT_LAN=lan
TPWS_LOCALHOST4=127.0.0.127
# max wait time for the link local ipv6 on the LAN interface
LINKLOCAL_WAIT_SEC=5
@@ -26,14 +34,6 @@ NFQWS_OPT_DESYNC_HTTPS="${NFQWS_OPT_DESYNC_HTTPS:-$NFQWS_OPT_DESYNC}"
NFQWS_OPT_DESYNC_HTTP6="${NFQWS_OPT_DESYNC_HTTP6:-$NFQWS_OPT_DESYNC_HTTP}"
NFQWS_OPT_DESYNC_HTTPS6="${NFQWS_OPT_DESYNC_HTTPS6:-$NFQWS_OPT_DESYNC_HTTPS}"
exists()
{
which "$1" >/dev/null 2>/dev/null
}
existf()
{
type "$1" >/dev/null 2>/dev/null
}
# can be multiple ipv6 outgoing interfaces
@@ -46,341 +46,268 @@ existf()
network_find_wan_all()
{
__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan $1
__network_ifstatus "$1" "" "[@.route[@.target='0.0.0.0' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan $1
}
network_find_wan6_all()
{
__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan6 $1
__network_ifstatus "$1" "" "[@.route[@.target='::' && !@.table]].interface" "" 10 2>/dev/null && return
network_find_wan6 $1
}
ipt()
route_localnet()
{
iptables -C "$@" >/dev/null 2>/dev/null || iptables -I "$@"
}
ipt_del()
{
iptables -C "$@" >/dev/null 2>/dev/null && iptables -D "$@"
}
ipt6()
{
ip6tables -C "$@" >/dev/null 2>/dev/null || ip6tables -I "$@"
}
ipt6_del()
{
ip6tables -C "$@" >/dev/null 2>/dev/null && ip6tables -D "$@"
}
# there's no route_localnet for ipv6
# the best we can is to route to link local of the incoming interface
# OUTPUT - can DNAT to ::1
# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
# not a good idea to expose tpws to the world (bind to ::)
get_ipv6_linklocal()
{
# $1 - interface name. if empty - any interface
if exists ip ; then
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
else
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Link.*$/\1/;t;d' | head -n 1
fi
}
get_ipv6_global()
{
# $1 - interface name. if empty - any interface
if exists ip ; then
local dev
[ -n "$1" ] && dev="dev $1"
ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
else
ifconfig $1 | sed -re 's/^.*inet6 addr: ([^ ]*)\/[0-9]* Scope:Global.*$/\1/;t;d' | head -n 1
fi
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
sysctl -qw net.ipv4.conf.$DEVICE.route_localnet=1
done
}
dnat6_target()
{
# $1 - lan network name
# $2 - var to store target ip6
# get target ip address for DNAT. prefer link locals
# tpws should be as inaccessible from outside as possible
# link local address can appear not immediately after ifup
# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
# $1 - lan network name
# $2 - var to store target ip6
# get target ip address for DNAT. prefer link locals
# tpws should be as inaccessible from outside as possible
# link local address can appear not immediately after ifup
# DNAT6_TARGET=- means attempt was made but address was not found (to avoid multiple re-attempts)
local DNAT6_TARGET DVAR=DNAT6_TARGET_$1
DVAR=$(echo $DVAR | sed 's/[^a-zA-Z0-9_]/_/g')
eval DNAT6_TARGET="\$$DVAR"
[ -n "$2" ] && eval $2=''
local DNAT6_TARGET DVAR=DNAT6_TARGET_$1
DVAR=$(echo $DVAR | sed 's/[^a-zA-Z0-9_]/_/g')
eval DNAT6_TARGET="\$$DVAR"
[ -n "$2" ] && eval $2=''
[ -n "$DNAT6_TARGET" ] || {
# no reason to query if its down
network_is_up $1 || return
[ -n "$DNAT6_TARGET" ] || {
# no reason to query if its down
network_is_up $1 || return
local DEVICE
network_get_device DEVICE $1
local DEVICE
network_get_device DEVICE $1
local ct=0
while
DNAT6_TARGET=$(get_ipv6_linklocal $DEVICE)
[ -n "$DNAT6_TARGET" ] && break
[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
echo $DEVICE: waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
ct=$(($ct+1))
sleep 1
do :; done
local ct=0
while
DNAT6_TARGET=$(get_ipv6_linklocal $DEVICE)
[ -n "$DNAT6_TARGET" ] && break
[ "$ct" -ge "$LINKLOCAL_WAIT_SEC" ] && break
echo $DEVICE: waiting for the link local for another $(($LINKLOCAL_WAIT_SEC - $ct)) seconds ...
ct=$(($ct+1))
sleep 1
do :; done
[ -n "$DNAT6_TARGET" ] || {
echo $DEVICE: no link local. getting global
DNAT6_TARGET=$(get_ipv6_global $DEVICE)
[ -n "$DNAT6_TARGET" ] || {
echo $DEVICE: could not get any address
DNAT6_TARGET=-
}
}
eval $DVAR="$DNAT6_TARGET"
}
[ -n "$2" ] && eval $2="$DNAT6_TARGET"
[ -n "$DNAT6_TARGET" ] || {
echo $DEVICE: no link local. getting global
DNAT6_TARGET=$(get_ipv6_global $DEVICE)
[ -n "$DNAT6_TARGET" ] || {
echo $DEVICE: could not get any address
DNAT6_TARGET=-
}
}
eval $DVAR="$DNAT6_TARGET"
}
[ -n "$2" ] && eval $2="$DNAT6_TARGET"
}
set_route_localnet()
{
# $1 - 1 = enable, 0 = disable
[ "$DISABLE_IPV4" = "1" ] || {
local lan DEVICE
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
sysctl -q -w net.ipv4.conf.$DEVICE.route_localnet=$1
done
}
}
prepare_route_localnet()
{
set_route_localnet 1
}
unprepare_route_localnet()
{
set_route_localnet 0
}
prepare_tpws_fw4()
{
# otherwise linux kernel will treat 127.0.0.0/8 as "martian" ip and refuse routing to it
# NOTE : kernels <3.6 do not have this feature. consider upgrading or change DNAT to REDIRECT and do not bind to 127.0.0.0/8
[ "$DISABLE_IPV4" = "1" ] || {
iptables -N input_rule_zapret 2>/dev/null
ipt input_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
ipta input_rule_zapret -d 127.0.0.0/8 -j DROP
ipt INPUT ! -i lo -j input_rule_zapret
prepare_route_localnet
}
}
unprepare_tpws_fw4()
{
[ "$DISABLE_IPV4" = "1" ] || {
unprepare_route_localnet
ipt_del INPUT ! -i lo -j input_rule_zapret
iptables -F input_rule_zapret 2>/dev/null
iptables -X input_rule_zapret 2>/dev/null
}
}
unprepare_tpws_fw()
{
unprepare_tpws_fw4
}
fw_nfqws_pre4()
{
# $1 - filter ipv4
# $2 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - queue number
local DEVICE wan_iface
local DEVICE wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt PREROUTING -t mangle -i $DEVICE -p tcp $1 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $2 --queue-bypass
done
}
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt_add_del $1 PREROUTING -t mangle -i $DEVICE -p tcp $2 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $3 --queue-bypass
done
}
}
fw_nfqws_pre6()
{
# $1 - filter ipv6
# $2 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv6
# $3 - queue number
local DEVICE wan_iface
local DEVICE wan_iface
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 PREROUTING -t mangle -i $DEVICE -p tcp $1 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $2 --queue-bypass
done
}
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6_add_del $1 PREROUTING -t mangle -i $DEVICE -p tcp $2 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $3 --queue-bypass
done
}
}
fw_nfqws_pre()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - filter ipv6
# $4 - queue number
fw_nfqws_pre4 "$1" $3
fw_nfqws_pre6 "$2" $3
fw_nfqws_pre4 $1 "$2" $4
fw_nfqws_pre6 $1 "$3" $4
}
fw_nfqws_post4()
{
# $1 - filter ipv4
# $2 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - queue number
local DEVICE wan_iface
local DEVICE wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt POSTROUTING -t mangle -o $DEVICE -p tcp $1 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $2 --queue-bypass
done
}
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt_add_del $1 POSTROUTING -t mangle -o $DEVICE -p tcp $2 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $3 --queue-bypass
done
}
}
fw_nfqws_post6()
{
# $1 - filter ipv6
# $2 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv6
# $3 - queue number
local DEVICE wan_iface
local DEVICE wan_iface
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 POSTROUTING -t mangle -o $DEVICE -p tcp $1 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $2 --queue-bypass
done
}
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6_add_del $1 POSTROUTING -t mangle -o $DEVICE -p tcp $2 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $3 --queue-bypass
done
}
}
fw_nfqws_post()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - queue number
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - filter ipv6
# $4 - queue number
fw_nfqws_post4 "$1" $3
fw_nfqws_post6 "$2" $3
fw_nfqws_post4 $1 "$2" $4
fw_nfqws_post6 $1 "$3" $4
}
IPT_OWNER="-m owner ! --uid-owner $WS_USER"
fw_tpws4()
{
# $1 - filter ipv6
# $2 - tpws port
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - tpws port
local DEVICE wan_iface
local lan DEVICE ext_iface wan_iface
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $1 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$2
done
# allow localnet route only to special tpws IP
iptables -N input_rule_zapret 2>/dev/null
ipt input_rule_zapret -d 127.0.0.0/8 -j DROP
ipt input_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
ipt prerouting_rule -t nat -i $DEVICE -p tcp $1 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$2
ipt input_rule -i $DEVICE -j input_rule_zapret
sysctl -qw net.ipv4.conf.$DEVICE.route_localnet=1
done
}
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt_add_del $1 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
done
[ "$1" = 1 ] && prepare_tpws_fw4
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
ipt_add_del $1 PREROUTING -t nat -i $DEVICE -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
done
}
}
fw_tpws6()
{
# $1 - filter ipv6
# $2 - tpws port
# $1 - 1 - add, 0 - del
# $2 - filter ipv6
# $3 - tpws port
local DEVICE wan_iface DNAT6
local lan DEVICE ext_iface wan_iface DNAT6
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $1 $IPSET_EXCLUDE6 dst -j DNAT --to [::1]:$2
done
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
dnat6_target $lan DNAT6
[ "$DNAT6" != '-' ] && ipt6 PREROUTING -t nat -i $DEVICE -p tcp $1 $IPSET_EXCLUDE6 dst -j DNAT --to [$DNAT6]:$2
done
}
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for ext_iface in $wan_iface; do
network_get_device DEVICE $ext_iface
ipt6_add_del $1 OUTPUT -t nat -o $DEVICE $IPT_OWNER -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [::1]:$3
done
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
dnat6_target $lan DNAT6
[ "$DNAT6" != '-' ] && ipt6_add_del $1 PREROUTING -t nat -i $DEVICE -p tcp $2 $IPSET_EXCLUDE6 dst -j DNAT --to [$DNAT6]:$3
done
}
}
fw_tpws()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - tpws port
# $1 - 1 - add, 0 - del
# $2 - filter ipv4
# $3 - filter ipv6
# $4 - tpws port
fw_tpws4 "$1" $3
fw_tpws6 "$2" $3
fw_tpws4 $1 "$2" $4
fw_tpws6 $1 "$3" $4
}
filter_apply_port_target()
{
# $1 - var name of iptables filter
local f
if [ "$MODE_HTTP" = "1" ] && [ "$MODE_HTTPS" = "1" ]; then
f="-m multiport --dports 80,443"
elif [ "$MODE_HTTPS" = "1" ]; then
f="--dport 443"
elif [ "$MODE_HTTP" = "1" ]; then
f="--dport 80"
else
echo WARNING !!! HTTP and HTTPS are both disabled
fi
eval $1="\"\$$1 $f\""
}
filter_apply_ipset_target4()
{
# $1 - var name of ipv4 iptables filter
if [ "$MODE_FILTER" = "ipset" ]; then
eval $1="\"\$$1 -m set --match-set zapret dst\""
fi
}
filter_apply_ipset_target6()
{
# $1 - var name of ipv4 iptables filter
if [ "$MODE_FILTER" = "ipset" ]; then
eval $1="\"\$$1 -m set --match-set zapret6 dst\""
fi
}
filter_apply_ipset_target()
{
# $1 - var name of ipv4 iptables filter
# $2 - var name of ipv6 iptables filter
filter_apply_ipset_target4 $1
filter_apply_ipset_target6 $2
}
get_nfqws_qnums()
{
# $1 - var name for ipv4 http
# $2 - var name for ipv4 https
# $3 - var name for ipv6 http
# $4 - var name for ipv6 https
local _qn _qns _qn6 _qns6
[ "$DISABLE_IPV4" = "1" ] || {
_qn=$QNUM
_qns=$_qn
[ "$NFQWS_OPT_DESYNC_HTTP" = "$NFQWS_OPT_DESYNC_HTTPS" ] || _qns=$(($QNUM+1))
}
[ "$DISABLE_IPV6" = "1" ] || {
_qn6=$(($QNUM+2))
_qns6=$(($QNUM+3))
[ "$DISABLE_IPV4" = "1" ] || {
if [ "$NFQWS_OPT_DESYNC_HTTP6" = "$NFQWS_OPT_DESYNC_HTTP" ]; then
_qn6=$_qn;
elif [ "$NFQWS_OPT_DESYNC_HTTP6" = "$NFQWS_OPT_DESYNC_HTTPS" ]; then
_qn6=$_qns;
fi
if [ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTP" ]; then
_qns6=$_qn;
elif [ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTPS" ]; then
_qns6=$_qns;
fi
}
[ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTP6" ] && _qns6=$_qn6;
}
if [ "$MODE_HTTP" = 1 ]; then
eval $1=$_qn
eval $3=$_qn6
else
eval $1=
eval $3=
fi
if [ "$MODE_HTTPS" = 1 ]; then
eval $2=$_qns
eval $4=$_qns6
else
eval $2=
eval $4=
fi
}
create_ipset()
{
echo "Creating ipset"
"$IPSET_CR" "$@"
echo "Creating ip list table (firewall type $FWTYPE)"
"$IPSET_CR" "$@"
}
is_flow_offload_avail()
{
# $1 = '' for ipv4, '6' for ipv6
grep -q FLOWOFFLOAD /proc/net/ip$1_tables_targets
}
list_nfqws_rules()
{
# $1 = '' for ipv4, '6' for ipv6
@@ -390,7 +317,7 @@ list_nfqws_rules()
}
reverse_nfqws_rule()
{
sed -e 's/-o /-i /' -e 's/--dport /--sport /' -e 's/--dports /--sports /' -e 's/ dst$/ src/' -e 's/ dst / src /'
sed -e 's/-o /-i /g' -e 's/--dport /--sport /g' -e 's/--dports /--sports /g' -e 's/ dst$/ src/' -e 's/ dst / src /g'
}
apply_flow_offloading_enable_rule()
{
@@ -411,15 +338,19 @@ apply_flow_offloading_exempt_rule()
echo applying ipv${v:-4} flow offloading exemption : $i
ip${v}tables -A $i
}
flow_offloading_unexempt_v()
{
ipt$1_del FORWARD -j forwarding_rule_zapret
ip$1tables -F forwarding_rule_zapret 2>/dev/null
ip$1tables -X forwarding_rule_zapret 2>/dev/null
}
flow_offloading_exempt_v()
{
# $1 = '' for ipv4, '6' for ipv6
is_flow_offload_avail $1 || return 0
is_ipt_flow_offload_avail $1 || return 0
ipt$1_del forwarding_rule -j forwarding_rule_zapret
ip$1tables -F forwarding_rule_zapret 2>/dev/null
ip$1tables -X forwarding_rule_zapret 2>/dev/null
flow_offloading_unexempt_v $1
[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && {
ip$1tables -N forwarding_rule_zapret
@@ -436,7 +367,7 @@ flow_offloading_exempt_v()
apply_flow_offloading_enable_rule $1
ipt$1 forwarding_rule -j forwarding_rule_zapret
ipt$1 FORWARD -j forwarding_rule_zapret
}
return 0
@@ -446,75 +377,137 @@ flow_offloading_exempt()
[ "$DISABLE_IPV4" = "1" ] || flow_offloading_exempt_v
[ "$DISABLE_IPV6" = "1" ] || flow_offloading_exempt_v 6
}
zapret_apply_firewall()
flow_offloading_unexempt()
{
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:4"
local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
local f4 f6 qn qns qn6 qns6
# always create ipsets. ip_exclude ipset is required
create_ipset no-update
case "${MODE_OVERRIDE:-$MODE}" in
tpws)
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
echo both http and https are disabled. not applying redirection.
else
filter_apply_port_target f4
f6=$f4
filter_apply_ipset_target f4 f6
fw_tpws "$f4" "$f6" $TPPORT
fi
;;
nfqws)
# quite complex but we need to minimize nfqws processes to save RAM
get_nfqws_qnums qn qns qn6 qns6
if [ "$MODE_HTTP_KEEPALIVE" != "1" ] && [ -n "$qn" ] && [ "$qn" = "$qns" ]; then
filter_apply_port_target f4
f4="$f4 $first_packet_only"
filter_apply_ipset_target4 f4
fw_nfqws_post4 "$f4 $desync" $qn
else
if [ -n "$qn" ]; then
f4="--dport 80"
[ "$MODE_HTTP_KEEPALIVE" = "1" ] || f4="$f4 $first_packet_only"
filter_apply_ipset_target4 f4
fw_nfqws_post4 "$f4 $desync" $qn
fi
if [ -n "$qns" ]; then
f4="--dport 443 $first_packet_only"
filter_apply_ipset_target4 f4
fw_nfqws_post4 "$f4 $desync" $qns
fi
fi
if [ "$MODE_HTTP_KEEPALIVE" != "1" ] && [ -n "$qn6" ] && [ "$qn6" = "$qns6" ]; then
filter_apply_port_target f6
f6="$f6 $first_packet_only"
filter_apply_ipset_target6 f6
fw_nfqws_post6 "$f6 $desync" $qn6
else
if [ -n "$qn6" ]; then
f6="--dport 80"
[ "$MODE_HTTP_KEEPALIVE" = "1" ] || f6="$f6 $first_packet_only"
filter_apply_ipset_target6 f6
fw_nfqws_post6 "$f6 $desync" $qn6
fi
if [ -n "$qns6" ]; then
f6="--dport 443 $first_packet_only"
filter_apply_ipset_target6 f6
fw_nfqws_post6 "$f6 $desync" $qns6
fi
fi
;;
custom)
existf zapret_custom_firewall && zapret_custom_firewall
;;
esac
flow_offloading_exempt
return 0
[ "$DISABLE_IPV4" = "1" ] || flow_offloading_unexempt_v
[ "$DISABLE_IPV6" = "1" ] || flow_offloading_unexempt_v 6
}
nft_fill_ifsets()
{
local script elements i wan_iface DEVICE DLAN DWAN DWAN6 ALLDEVS flags
# if large sets exist nft works very ineffectively
# looks like it analyzes the whole table blob to find required data pieces
# calling all in one shot helps not to waste cpu time many times
script="flush set inet $ZAPRET_NFT_TABLE wanif
flush set inet $ZAPRET_NFT_TABLE wanif6
flush set inet $ZAPRET_NFT_TABLE lanif"
[ "$DISABLE_IPV4" = "1" ] || {
network_find_wan_all wan_iface
for i in $wan_iface; do
network_get_device DEVICE $i
DWAN="$DWAN $DEVICE"
done
[ -n "$DWAN" ] && {
make_comma_list elements $DWAN
script="${script}
add element inet $ZAPRET_NFT_TABLE wanif { $elements }"
}
}
[ "$DISABLE_IPV6" = "1" ] || {
network_find_wan6_all wan_iface
for i in $wan_iface; do
network_get_device DEVICE $i
DWAN6="$DWAN6 $DEVICE"
done
[ -n "$DWAN6" ] && {
make_comma_list elements $DWAN6
script="${script}
add element inet $ZAPRET_NFT_TABLE wanif6 { $elements }"
}
}
for i in $OPENWRT_LAN; do
network_get_device DEVICE $i
DLAN="$DLAN $DEVICE"
done
[ -n "$DLAN" ] && {
make_comma_list elements $DLAN
script="${script}
add element inet $ZAPRET_NFT_TABLE lanif { $elements }"
}
echo "$script" | nft -f -
[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && {
ALLDEVS=$(for i in $DLAN $DWAN $DWAN6; do echo $i; done | sort -u | xargs)
[ "$FLOWOFFLOAD" = 'hardware' ] && nft_hw_offload_supported $ALLDEVS && flags=offload
nft_create_or_update_flowtable "$flags" $ALLDEVS
}
}
nft_fw_tpws4()
{
# $1 - filter ipv4
# $2 - tpws port
[ "$DISABLE_IPV4" = "1" ] || {
nft_add_rule dnat_output skuid != $WS_USER oifname @wanif meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
nft_add_rule dnat_pre iifname @lanif meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
prepare_route_localnet
}
}
nft_fw_tpws6()
{
# $1 - filter ipv6
# $2 - tpws port
local lan DEVICE DNAT6
[ "$DISABLE_IPV6" = "1" ] || {
nft_add_rule dnat_output skuid != $WS_USER oifname @wanif6 meta l4proto tcp $1 ip6 daddr != @nozapret6 dnat ip6 to [::1]:$2
for lan in $OPENWRT_LAN; do
network_get_device DEVICE $lan
[ -n "$DEVICE" ] || continue
dnat6_target $lan DNAT6
[ "$DNAT6" != '-' ] && nft_add_rule dnat_pre iifname $DEVICE meta l4proto tcp $1 ip6 daddr != @nozapret6 dnat ip6 to [$DNAT6]:$2
done
}
}
nft_fw_tpws()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - tpws port
nft_fw_tpws4 "$1" $3
nft_fw_tpws6 "$2" $3
}
nft_fw_nfqws_post4()
{
# $1 - filter ipv4
# $2 - queue number
local DEVICE wan_iface rule
[ "$DISABLE_IPV4" = "1" ] || {
rule="oifname @wanif meta l4proto tcp $1 ip daddr != @nozapret"
nft_add_rule postrouting $rule queue num $2 bypass
nft_add_nfqws_flow_exempt_rule "$rule"
}
}
nft_fw_nfqws_post6()
{
# $1 - filter ipv6
# $2 - queue number
local DEVICE wan_iface rule
[ "$DISABLE_IPV6" = "1" ] || {
rule="oifname @wanif6 meta l4proto tcp $1 ip6 daddr != @nozapret6"
nft_add_rule postrouting $rule queue num $2 bypass
nft_add_nfqws_flow_exempt_rule "$rule"
}
}
nft_fw_nfqws_post()
{
# $1 - filter ipv4
# $2 - filter ipv6
# $3 - queue number
nft_fw_nfqws_post4 "$1" $3
nft_fw_nfqws_post6 "$2" $3
}

84
init.d/openwrt/zapret
View File

@@ -4,6 +4,24 @@ USE_PROCD=1
# after network
START=21
my_extra_command() {
local cmd="$1"
local help="$2"
local extra="$(printf "%-16s%s" "${cmd}" "${help}")"
EXTRA_HELP="${EXTRA_HELP} ${extra}
"
EXTRA_COMMANDS="${EXTRA_COMMANDS} ${cmd}"
}
my_extra_command stop_fw "Stop zapret firewall (noop in iptables+fw3 case)"
my_extra_command start_fw "Start zapret firewall (noop in iptables+fw3 case)"
my_extra_command restart_fw "Restart zapret firewall (noop in iptables+fw3 case)"
my_extra_command reload_ifsets "Reload interface lists (nftables only)"
my_extra_command list_ifsets "Display interface lists (nftables only)"
my_extra_command list_table "Display zapret nftable (nftables only)"
my_extra_command stop_daemons "Stop zapret daemons only (=stop in iptables+fw3 case)"
my_extra_command start_daemons "Start zapret daemons only (=start in iptables+fw3 case)"
my_extra_command restart_daemons "Restart zapret firewall only (=restart in iptables+fw3 case)"
SCRIPT=$(readlink /etc/init.d/zapret)
if [ -n "$SCRIPT" ]; then
@@ -12,10 +30,12 @@ if [ -n "$SCRIPT" ]; then
else
ZAPRET_BASE=/opt/zapret
fi
. "$ZAPRET_BASE/init.d/openwrt/functions"
# !!!!! in openwrt firewall rules are configured separately
# !!!!! in old openwrt 21.x- with iptables firewall rules are configured separately
# !!!!! in new openwrt >21.x with nftables firewall is configured here
PIDDIR=/var/run
@@ -23,7 +43,6 @@ PIDDIR=/var/run
NFQWS_OPT_BASE="--user=$WS_USER --dpi-desync-fwmark=$DESYNC_MARK"
[ -n "$TPWS" ] || TPWS="$ZAPRET_BASE/tpws/tpws"
TPWS_LOCALHOST4=127.0.0.127
HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt.gz"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts.txt"
[ -f "$HOSTLIST" ] || HOSTLIST="$ZAPRET_BASE/ipset/zapret-hosts-user.txt"
@@ -104,7 +123,8 @@ tpws_apply_socks_binds()
}
start_service() {
start_daemons_procd()
{
local opt qn qns qn6 qns6
case "${MODE_OVERRIDE:-$MODE}" in
@@ -149,3 +169,61 @@ start_service() {
return 0
}
start_daemons()
{
rc_procd start_daemons_procd "$@"
}
stop_daemons()
{
procd_kill "$(basename ${basescript:-$initscript})" "$1"
}
restart_daemons()
{
stop_daemons
start_daemons
}
start_fw()
{
zapret_apply_firewall
}
stop_fw()
{
zapret_unapply_firewall
}
restart_fw()
{
stop_fw
start_fw
}
reload_ifsets()
{
zapret_reload_ifsets
}
list_ifsets()
{
zapret_list_ifsets
}
list_table()
{
zapret_list_table
}
start_service()
{
start_daemons_procd
[ "$INIT_APPLY_FW" != "1" ] || {
linux_fwtype
openwrt_fw3_integration || start_fw
}
}
stop_service()
{
# this procedure is called from stop()
# stop() already stop daemons
[ "$INIT_APPLY_FW" != "1" ] || {
linux_fwtype
openwrt_fw3_integration || stop_fw
}
}