mirror of
https://github.com/bol-van/zapret.git
synced 2024-12-20 23:11:34 +03:00
704 lines
20 KiB
Bash
704 lines
20 KiB
Bash
[ -n "$ZAPRET_NFT_TABLE" ] || ZAPRET_NFT_TABLE=zapret
|
|
readonly nft_connbytes="ct original packets"
|
|
|
|
# required for : nft -f -
|
|
create_dev_stdin
|
|
std_ports
|
|
|
|
nft_create_table()
|
|
{
|
|
nft add table inet $ZAPRET_NFT_TABLE
|
|
}
|
|
nft_del_table()
|
|
{
|
|
nft delete table inet $ZAPRET_NFT_TABLE 2>/dev/null
|
|
}
|
|
nft_list_table()
|
|
{
|
|
nft -t list table inet $ZAPRET_NFT_TABLE
|
|
}
|
|
|
|
nft_create_set()
|
|
{
|
|
# $1 - set name
|
|
# $2 - params
|
|
nft create set inet $ZAPRET_NFT_TABLE $1 "{ $2 }" 2>/dev/null
|
|
}
|
|
nft_del_set()
|
|
{
|
|
# $1 - set name
|
|
nft delete set inet $ZAPRET_NFT_TABLE $1
|
|
}
|
|
nft_flush_set()
|
|
{
|
|
# $1 - set name
|
|
nft flush set inet $ZAPRET_NFT_TABLE $1
|
|
}
|
|
nft_set_exists()
|
|
{
|
|
# $1 - set name
|
|
nft -t list set inet $ZAPRET_NFT_TABLE $1 2>/dev/null >/dev/null
|
|
}
|
|
nft_flush_chain()
|
|
{
|
|
# $1 - chain name
|
|
nft flush chain inet $ZAPRET_NFT_TABLE $1
|
|
}
|
|
|
|
nft_del_all_chains_from_table()
|
|
{
|
|
# $1 - table_name with or without family
|
|
|
|
# delete all chains with possible references to each other
|
|
# cannot just delete all in the list because of references
|
|
# avoid infinite loops
|
|
local chains deleted=1 error=1
|
|
while [ -n "$deleted" -a -n "$error" ]; do
|
|
chains=$(nft -t list table $1 2>/dev/null | sed -nre "s/^[ ]*chain ([^ ]+) \{/\1/p" | xargs)
|
|
[ -n "$chains" ] || break
|
|
deleted=
|
|
error=
|
|
for chain in $chains; do
|
|
if nft delete chain $1 $chain 2>/dev/null; then
|
|
deleted=1
|
|
else
|
|
error=1
|
|
fi
|
|
done
|
|
done
|
|
}
|
|
|
|
nft_create_chains()
|
|
{
|
|
cat << EOF | nft -f -
|
|
add chain inet $ZAPRET_NFT_TABLE dnat_output { type nat hook output priority -101; }
|
|
flush chain inet $ZAPRET_NFT_TABLE dnat_output
|
|
add chain inet $ZAPRET_NFT_TABLE dnat_pre { type nat hook prerouting priority -101; }
|
|
flush chain inet $ZAPRET_NFT_TABLE dnat_pre
|
|
add chain inet $ZAPRET_NFT_TABLE forward { type filter hook forward priority -1; }
|
|
flush chain inet $ZAPRET_NFT_TABLE forward
|
|
add chain inet $ZAPRET_NFT_TABLE input { type filter hook input priority -1; }
|
|
flush chain inet $ZAPRET_NFT_TABLE input
|
|
add chain inet $ZAPRET_NFT_TABLE flow_offload
|
|
flush chain inet $ZAPRET_NFT_TABLE flow_offload
|
|
add chain inet $ZAPRET_NFT_TABLE localnet_protect
|
|
flush chain inet $ZAPRET_NFT_TABLE localnet_protect
|
|
add rule inet $ZAPRET_NFT_TABLE localnet_protect ip daddr $TPWS_LOCALHOST4 return comment "route_localnet allow access to tpws"
|
|
add rule inet $ZAPRET_NFT_TABLE localnet_protect ip daddr 127.0.0.0/8 drop comment "route_localnet remote access protection"
|
|
add rule inet $ZAPRET_NFT_TABLE input iif != lo jump localnet_protect
|
|
add chain inet $ZAPRET_NFT_TABLE postrouting
|
|
flush chain inet $ZAPRET_NFT_TABLE postrouting
|
|
add chain inet $ZAPRET_NFT_TABLE postrouting_hook { type filter hook postrouting priority 99; }
|
|
flush chain inet $ZAPRET_NFT_TABLE postrouting_hook
|
|
add rule inet $ZAPRET_NFT_TABLE postrouting_hook mark and $DESYNC_MARK == 0 jump postrouting
|
|
add chain inet $ZAPRET_NFT_TABLE postnat
|
|
flush chain inet $ZAPRET_NFT_TABLE postnat
|
|
add chain inet $ZAPRET_NFT_TABLE postnat_hook { type filter hook postrouting priority 101; }
|
|
flush chain inet $ZAPRET_NFT_TABLE postnat_hook
|
|
add rule inet $ZAPRET_NFT_TABLE postnat_hook mark and $DESYNC_MARK == 0 jump postnat
|
|
add chain inet $ZAPRET_NFT_TABLE prerouting { type filter hook prerouting priority -99; }
|
|
flush chain inet $ZAPRET_NFT_TABLE prerouting
|
|
add chain inet $ZAPRET_NFT_TABLE prenat { type filter hook prerouting priority -101; }
|
|
flush chain inet $ZAPRET_NFT_TABLE prenat
|
|
add chain inet $ZAPRET_NFT_TABLE predefrag { type filter hook output priority -401; }
|
|
flush chain inet $ZAPRET_NFT_TABLE predefrag
|
|
add chain inet $ZAPRET_NFT_TABLE predefrag_nfqws
|
|
flush chain inet $ZAPRET_NFT_TABLE predefrag_nfqws
|
|
add rule inet $ZAPRET_NFT_TABLE predefrag mark and $DESYNC_MARK !=0 jump predefrag_nfqws comment "nfqws generated : avoid drop by INVALID conntrack state"
|
|
add rule inet $ZAPRET_NFT_TABLE predefrag_nfqws mark and $DESYNC_MARK_POSTNAT !=0 notrack comment "postnat traffic"
|
|
add rule inet $ZAPRET_NFT_TABLE predefrag_nfqws ip frag-off != 0 notrack comment "ipfrag"
|
|
add rule inet $ZAPRET_NFT_TABLE predefrag_nfqws exthdr frag exists notrack comment "ipfrag"
|
|
add rule inet $ZAPRET_NFT_TABLE predefrag_nfqws tcp flags ! syn,rst,ack notrack comment "datanoack"
|
|
add set inet $ZAPRET_NFT_TABLE lanif { type ifname; }
|
|
add set inet $ZAPRET_NFT_TABLE wanif { type ifname; }
|
|
add set inet $ZAPRET_NFT_TABLE wanif6 { type ifname; }
|
|
add map inet $ZAPRET_NFT_TABLE link_local { type ifname : ipv6_addr; }
|
|
|
|
EOF
|
|
[ -n "$POSTNAT_ALL" ] && {
|
|
nft_flush_chain predefrag_nfqws
|
|
nft_add_rule predefrag_nfqws notrack comment \"do not track nfqws generated packets to avoid nat tampering and defragmentation\"
|
|
}
|
|
}
|
|
nft_del_chains()
|
|
{
|
|
# do not delete all chains because of additional user hooks
|
|
# they must be inside zapret table to use nfsets
|
|
|
|
# these chains are newer. do not fail all because chains are not present
|
|
cat << EOF | nft -f - 2>/dev/null
|
|
delete chain inet $ZAPRET_NFT_TABLE postrouting_hook
|
|
delete chain inet $ZAPRET_NFT_TABLE postnat_hook
|
|
EOF
|
|
|
|
cat << EOF | nft -f - 2>/dev/null
|
|
delete chain inet $ZAPRET_NFT_TABLE dnat_output
|
|
delete chain inet $ZAPRET_NFT_TABLE dnat_pre
|
|
delete chain inet $ZAPRET_NFT_TABLE forward
|
|
delete chain inet $ZAPRET_NFT_TABLE input
|
|
delete chain inet $ZAPRET_NFT_TABLE postrouting
|
|
delete chain inet $ZAPRET_NFT_TABLE postnat
|
|
delete chain inet $ZAPRET_NFT_TABLE prerouting
|
|
delete chain inet $ZAPRET_NFT_TABLE prenat
|
|
delete chain inet $ZAPRET_NFT_TABLE predefrag
|
|
delete chain inet $ZAPRET_NFT_TABLE predefrag_nfqws
|
|
delete chain inet $ZAPRET_NFT_TABLE flow_offload
|
|
delete chain inet $ZAPRET_NFT_TABLE localnet_protect
|
|
EOF
|
|
# unfortunately this approach breaks udp desync of the connection initiating packet (new, first one)
|
|
# delete chain inet $ZAPRET_NFT_TABLE predefrag
|
|
}
|
|
nft_del_flowtable()
|
|
{
|
|
nft delete flowtable inet $ZAPRET_NFT_TABLE ft 2>/dev/null
|
|
}
|
|
nft_create_or_update_flowtable()
|
|
{
|
|
# $1 = flags ('offload' for hw offload)
|
|
# $2,$3,$4,... - interfaces
|
|
# can be called multiple times to add interfaces. interfaces can only be added , not removed
|
|
local flags=$1 devices makelist
|
|
shift
|
|
# warning ! nft versions at least up to 1.0.1 do not allow interface names starting with digit in flowtable and do not allow quoting
|
|
# warning ! openwrt fixes this in post-21.x snapshots with special nft patch
|
|
# warning ! in traditional linux distros nft is unpatched and will fail with quoted interface definitions if unfixed
|
|
[ -n "$flags" ] && flags="flags $flags;"
|
|
for makelist in make_quoted_comma_list make_comma_list; do
|
|
$makelist devices "$@"
|
|
[ -n "$devices" ] && devices="devices={$devices};"
|
|
nft add flowtable inet $ZAPRET_NFT_TABLE ft "{ hook ingress priority -1; $flags $devices }" && break
|
|
done
|
|
}
|
|
nft_flush_ifsets()
|
|
{
|
|
cat << EOF | nft -f - 2>/dev/null
|
|
flush set inet $ZAPRET_NFT_TABLE lanif
|
|
flush set inet $ZAPRET_NFT_TABLE wanif
|
|
flush set inet $ZAPRET_NFT_TABLE wanif6
|
|
flush map inet $ZAPRET_NFT_TABLE link_local
|
|
EOF
|
|
}
|
|
nft_flush_link_local()
|
|
{
|
|
nft flush map inet $ZAPRET_NFT_TABLE link_local 2>/dev/null
|
|
}
|
|
nft_list_ifsets()
|
|
{
|
|
nft list set inet $ZAPRET_NFT_TABLE lanif
|
|
nft list set inet $ZAPRET_NFT_TABLE wanif
|
|
nft list set inet $ZAPRET_NFT_TABLE wanif6
|
|
nft list map inet $ZAPRET_NFT_TABLE link_local
|
|
nft list flowtable inet $ZAPRET_NFT_TABLE ft 2>/dev/null
|
|
}
|
|
|
|
nft_create_firewall()
|
|
{
|
|
nft_create_table
|
|
nft_del_flowtable
|
|
nft_flush_link_local
|
|
nft_create_chains
|
|
}
|
|
nft_del_firewall()
|
|
{
|
|
nft_del_chains
|
|
nft_del_flowtable
|
|
nft_flush_link_local
|
|
# leave ifsets and ipsets because they may be used by custom rules
|
|
}
|
|
|
|
nft_add_rule()
|
|
{
|
|
# $1 - chain
|
|
# $2,$3,... - rule(s)
|
|
local chain="$1"
|
|
shift
|
|
nft add rule inet $ZAPRET_NFT_TABLE $chain $FW_EXTRA_PRE "$@"
|
|
}
|
|
nft_insert_rule()
|
|
{
|
|
# $1 - chain
|
|
# $2,$3,... - rule(s)
|
|
local chain="$1"
|
|
shift
|
|
nft insert rule inet $ZAPRET_NFT_TABLE $chain $FW_EXTRA_PRE "$@"
|
|
}
|
|
nft_add_set_element()
|
|
{
|
|
# $1 - set or map name
|
|
# $2 - element
|
|
[ -z "$2" ] || nft add element inet $ZAPRET_NFT_TABLE $1 "{ $2 }"
|
|
}
|
|
nft_add_set_elements()
|
|
{
|
|
# $1 - set or map name
|
|
# $2,$3,... - element(s)
|
|
local set="$1" elements
|
|
shift
|
|
make_comma_list elements "$@"
|
|
nft_add_set_element $set "$elements"
|
|
}
|
|
nft_reverse_nfqws_rule()
|
|
{
|
|
echo "$@" | sed -e 's/oifname /iifname /g' -e 's/dport /sport /g' -e 's/daddr /saddr /g' -e 's/ct original /ct reply /g' -e "s/mark and $DESYNC_MARK == 0//g"
|
|
}
|
|
nft_clean_nfqws_rule()
|
|
{
|
|
echo "$@" | sed -e "s/mark and $DESYNC_MARK == 0//g" -e "s/oifname @wanif6//g" -e "s/oifname @wanif//g"
|
|
}
|
|
nft_add_nfqws_flow_exempt_rule()
|
|
{
|
|
# $1 - rule (must be all filters in one var)
|
|
local FW_EXTRA_POST= FW_EXTRA_PRE=
|
|
nft_add_rule flow_offload $(nft_clean_nfqws_rule $1) return comment \"direct flow offloading exemption\"
|
|
# do not need this because of oifname @wanif/@wanif6 filter in forward chain
|
|
#nft_add_rule flow_offload $(nft_reverse_nfqws_rule $1) return comment \"reverse flow offloading exemption\"
|
|
}
|
|
nft_add_flow_offload_exemption()
|
|
{
|
|
# "$1" - rule for ipv4
|
|
# "$2" - rule for ipv6
|
|
# "$3" - comment
|
|
local FW_EXTRA_POST= FW_EXTRA_PRE=
|
|
[ "$DISABLE_IPV4" = "1" -o -z "$1" ] || nft_add_rule flow_offload oifname @wanif $1 ip daddr != @nozapret return comment \"$3\"
|
|
[ "$DISABLE_IPV6" = "1" -o -z "$2" ] || nft_add_rule flow_offload oifname @wanif6 $2 ip6 daddr != @nozapret6 return comment \"$3\"
|
|
}
|
|
|
|
nft_hw_offload_supported()
|
|
{
|
|
# $1,$2,... - interface names
|
|
local devices res=1
|
|
make_quoted_comma_list devices "$@"
|
|
[ -n "$devices" ] && devices="devices={$devices};"
|
|
nft add table ${ZAPRET_NFT_TABLE}_test && nft add flowtable ${ZAPRET_NFT_TABLE}_test ft "{ flags offload; $devices }" 2>/dev/null && res=0
|
|
nft delete table ${ZAPRET_NFT_TABLE}_test 2>/dev/null
|
|
return $res
|
|
}
|
|
|
|
nft_hw_offload_find_supported()
|
|
{
|
|
# $1,$2,... - interface names
|
|
local supported_list
|
|
while [ -n "$1" ]; do
|
|
nft_hw_offload_supported "$1" && append_separator_list supported_list ' ' '' "$1"
|
|
shift
|
|
done
|
|
echo $supported_list
|
|
}
|
|
|
|
nft_apply_flow_offloading()
|
|
{
|
|
# ft can be absent
|
|
nft_add_rule flow_offload meta l4proto "{ tcp, udp }" flow add @ft 2>/dev/null && {
|
|
nft_add_rule flow_offload meta l4proto "{ tcp, udp }" counter comment \"if offload works here must not be too much traffic\"
|
|
# allow only outgoing packets to initiate flow offload
|
|
nft_add_rule forward oifname @wanif jump flow_offload
|
|
nft_add_rule forward oifname @wanif6 jump flow_offload
|
|
}
|
|
}
|
|
|
|
|
|
|
|
nft_filter_apply_ipset_target4()
|
|
{
|
|
# $1 - var name of ipv4 nftables filter
|
|
if [ "$MODE_FILTER" = "ipset" ]; then
|
|
eval $1="\"\$$1 ip daddr @zapret\""
|
|
fi
|
|
}
|
|
nft_filter_apply_ipset_target6()
|
|
{
|
|
# $1 - var name of ipv6 nftables filter
|
|
if [ "$MODE_FILTER" = "ipset" ]; then
|
|
eval $1="\"\$$1 ip6 daddr @zapret6\""
|
|
fi
|
|
}
|
|
nft_filter_apply_ipset_target()
|
|
{
|
|
# $1 - var name of ipv4 nftables filter
|
|
# $2 - var name of ipv6 nftables filter
|
|
nft_filter_apply_ipset_target4 $1
|
|
nft_filter_apply_ipset_target6 $2
|
|
}
|
|
|
|
|
|
nft_script_add_ifset_element()
|
|
{
|
|
# $1 - set name
|
|
# $2 - space separated elements
|
|
local elements
|
|
[ -n "$2" ] && {
|
|
make_quoted_comma_list elements $2
|
|
script="${script}
|
|
add element inet $ZAPRET_NFT_TABLE $1 { $elements }"
|
|
}
|
|
}
|
|
nft_fill_ifsets()
|
|
{
|
|
# $1 - space separated lan interface names
|
|
# $2 - space separated wan interface names
|
|
# $3 - space separated wan6 interface names
|
|
# 4,5,6 is needed for pppoe+openwrt case. looks like it's not easily possible to resolve ethernet device behind a pppoe interface
|
|
# $4 - space separated lan physical interface names (optional)
|
|
# $5 - space separated wan physical interface names (optional)
|
|
# $6 - space separated wan6 physical interface names (optional)
|
|
|
|
local script i j ALLDEVS devs
|
|
|
|
# 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" ] || nft_script_add_ifset_element wanif "$2"
|
|
[ "$DISABLE_IPV6" = "1" ] || nft_script_add_ifset_element wanif6 "$3"
|
|
nft_script_add_ifset_element lanif "$1"
|
|
|
|
echo "$script" | nft -f -
|
|
|
|
case "$FLOWOFFLOAD" in
|
|
software)
|
|
ALLDEVS=$(unique $1 $2 $3)
|
|
# unbound flowtable may cause error in older nft version
|
|
nft_create_or_update_flowtable '' $ALLDEVS 2>/dev/null
|
|
;;
|
|
hardware)
|
|
ALLDEVS=$(unique $1 $2 $3 $4 $5 $6)
|
|
# first create unbound flowtable. may cause error in older nft version
|
|
nft_create_or_update_flowtable 'offload' 2>/dev/null
|
|
# then add elements. some of them can cause error because unsupported
|
|
for i in $ALLDEVS; do
|
|
if nft_hw_offload_supported $i; then
|
|
nft_create_or_update_flowtable 'offload' $i
|
|
else
|
|
# bridge members must be added instead of the bridge itself
|
|
# some members may not support hw offload. example : lan1 lan2 lan3 support, wlan0 wlan1 - not
|
|
devs=$(resolve_lower_devices $i)
|
|
for j in $devs; do
|
|
# do not display error if addition failed
|
|
nft_create_or_update_flowtable 'offload' $j 2>/dev/null
|
|
done
|
|
fi
|
|
done
|
|
;;
|
|
esac
|
|
}
|
|
|
|
nft_only()
|
|
{
|
|
linux_fwtype
|
|
|
|
case "$FWTYPE" in
|
|
nftables)
|
|
"$@"
|
|
;;
|
|
esac
|
|
}
|
|
|
|
|
|
nft_print_op()
|
|
{
|
|
echo "Inserting nftables ipv$3 rule for $2 : $1"
|
|
}
|
|
_nft_fw_tpws4()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - tpws port
|
|
# $3 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV4" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2"
|
|
nft_print_op "$filter" "tpws (port $2)" 4
|
|
nft_insert_rule dnat_output skuid != $WS_USER ${3:+oifname @wanif }$filter ip daddr != @nozapret $FW_EXTRA_POST dnat ip to $TPWS_LOCALHOST4:$port
|
|
nft_insert_rule dnat_pre iifname @lanif $filter ip daddr != @nozapret $FW_EXTRA_POST dnat ip to $TPWS_LOCALHOST4:$port
|
|
prepare_route_localnet
|
|
}
|
|
}
|
|
_nft_fw_tpws6()
|
|
{
|
|
# $1 - filter ipv6
|
|
# $2 - tpws port
|
|
# $3 - lan interface names space separated
|
|
# $4 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV6" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2" DNAT6 i
|
|
nft_print_op "$filter" "tpws (port $port)" 6
|
|
nft_insert_rule dnat_output skuid != $WS_USER ${4:+oifname @wanif6 }$filter ip6 daddr != @nozapret6 $FW_EXTRA_POST dnat ip6 to [::1]:$port
|
|
[ -n "$3" ] && {
|
|
nft_insert_rule dnat_pre $filter ip6 daddr != @nozapret6 $FW_EXTRA_POST dnat ip6 to iifname map @link_local:$port
|
|
for i in $3; do
|
|
_dnat6_target $i DNAT6
|
|
# can be multiple tpws processes on different ports
|
|
[ -n "$DNAT6" -a "$DNAT6" != '-' ] && nft_add_set_element link_local "$i : $DNAT6"
|
|
done
|
|
}
|
|
}
|
|
}
|
|
nft_fw_tpws()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - tpws port
|
|
|
|
nft_fw_tpws4 "$1" $3
|
|
nft_fw_tpws6 "$2" $3
|
|
}
|
|
is_postnat()
|
|
{
|
|
[ "$POSTNAT" != 0 -o "$POSTNAT_ALL" = 1 ]
|
|
}
|
|
get_postchain()
|
|
{
|
|
if is_postnat ; then
|
|
echo -n postnat
|
|
else
|
|
echo -n postrouting
|
|
fi
|
|
}
|
|
get_prechain()
|
|
{
|
|
if is_postnat ; then
|
|
echo -n prenat
|
|
else
|
|
echo -n prerouting
|
|
fi
|
|
}
|
|
_nft_fw_nfqws_post4()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - queue number
|
|
# $3 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV4" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2" rule chain=$(get_postchain) setmark
|
|
nft_print_op "$filter" "nfqws postrouting (qnum $port)" 4
|
|
rule="${3:+oifname @wanif }$filter ip daddr != @nozapret"
|
|
is_postnat && setmark="meta mark set meta mark or $DESYNC_MARK_POSTNAT"
|
|
nft_insert_rule $chain $rule $setmark $FW_EXTRA_POST queue num $port bypass
|
|
nft_add_nfqws_flow_exempt_rule "$rule"
|
|
}
|
|
}
|
|
_nft_fw_nfqws_post6()
|
|
{
|
|
# $1 - filter ipv6
|
|
# $2 - queue number
|
|
# $3 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV6" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2" rule chain=$(get_postchain) setmark
|
|
nft_print_op "$filter" "nfqws postrouting (qnum $port)" 6
|
|
rule="${3:+oifname @wanif6 }$filter ip6 daddr != @nozapret6"
|
|
is_postnat && setmark="meta mark set meta mark or $DESYNC_MARK_POSTNAT"
|
|
nft_insert_rule $chain $rule $setmark $FW_EXTRA_POST queue num $port bypass
|
|
nft_add_nfqws_flow_exempt_rule "$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
|
|
}
|
|
|
|
_nft_fw_nfqws_pre4()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - queue number
|
|
# $3 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV4" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2" rule
|
|
nft_print_op "$filter" "nfqws prerouting (qnum $port)" 4
|
|
rule="${3:+iifname @wanif }$filter ip saddr != @nozapret"
|
|
nft_insert_rule $(get_prechain) $rule $FW_EXTRA_POST queue num $port bypass
|
|
}
|
|
}
|
|
_nft_fw_nfqws_pre6()
|
|
{
|
|
# $1 - filter ipv6
|
|
# $2 - queue number
|
|
# $3 - not-empty if wan interface filtering required
|
|
|
|
[ "$DISABLE_IPV6" = "1" -o -z "$1" ] || {
|
|
local filter="$1" port="$2" rule
|
|
nft_print_op "$filter" "nfqws prerouting (qnum $port)" 6
|
|
rule="${3:+iifname @wanif6 }$filter ip6 saddr != @nozapret6"
|
|
nft_insert_rule $(get_prechain) $rule $FW_EXTRA_POST queue num $port bypass
|
|
}
|
|
}
|
|
nft_fw_nfqws_pre()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - queue number
|
|
|
|
nft_fw_nfqws_pre4 "$1" $3
|
|
nft_fw_nfqws_pre6 "$2" $3
|
|
}
|
|
|
|
nft_fw_nfqws_both4()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - queue number
|
|
nft_fw_nfqws_post4 "$@"
|
|
nft_fw_nfqws_pre4 "$(nft_reverse_nfqws_rule $1)" $2
|
|
}
|
|
nft_fw_nfqws_both6()
|
|
{
|
|
# $1 - filter ipv6
|
|
# $2 - queue number
|
|
nft_fw_nfqws_post6 "$@"
|
|
nft_fw_nfqws_pre6 "$(nft_reverse_nfqws_rule $1)" $2
|
|
}
|
|
nft_fw_nfqws_both()
|
|
{
|
|
# $1 - filter ipv4
|
|
# $2 - filter ipv6
|
|
# $3 - queue number
|
|
nft_fw_nfqws_both4 "$1" "$3"
|
|
nft_fw_nfqws_both6 "$2" "$3"
|
|
}
|
|
|
|
zapret_reload_ifsets()
|
|
{
|
|
nft_only nft_create_table ; nft_fill_ifsets_overload
|
|
return 0
|
|
}
|
|
zapret_list_ifsets()
|
|
{
|
|
nft_only nft_list_ifsets
|
|
return 0
|
|
}
|
|
zapret_list_table()
|
|
{
|
|
nft_only nft_list_table
|
|
return 0
|
|
}
|
|
|
|
|
|
|
|
nft_fw_reverse_nfqws_rule4()
|
|
{
|
|
nft_fw_nfqws_pre4 "$(nft_reverse_nfqws_rule "$1")" $2
|
|
}
|
|
nft_fw_reverse_nfqws_rule6()
|
|
{
|
|
nft_fw_nfqws_pre6 "$(nft_reverse_nfqws_rule "$1")" $2
|
|
}
|
|
nft_fw_reverse_nfqws_rule()
|
|
{
|
|
# ensure that modes relying on incoming traffic work
|
|
# $1 - rule4
|
|
# $2 - rule6
|
|
# $3 - queue number
|
|
nft_fw_reverse_nfqws_rule4 "$1" $3
|
|
nft_fw_reverse_nfqws_rule6 "$2" $3
|
|
}
|
|
|
|
nft_first_packets()
|
|
{
|
|
# $1 - packet count
|
|
[ -n "$1" -a "$1" != keepalive ] && [ "$1" -ge 1 ] &&
|
|
{
|
|
if [ "$1" = 1 ] ; then
|
|
echo "$nft_connbytes 1"
|
|
else
|
|
echo "$nft_connbytes 1-$1"
|
|
fi
|
|
}
|
|
}
|
|
|
|
nft_apply_nfqws_in_out()
|
|
{
|
|
# $1 - tcp,udp
|
|
# $2 - ports
|
|
# $3 - PKT_OUT. special value : 'keepalive'
|
|
# $4 - PKT_IN
|
|
local f4 f6 first_packets_only
|
|
[ -n "$2" ] || return
|
|
[ -n "$3" -a "$3" != 0 ] &&
|
|
{
|
|
first_packets_only="$(nft_first_packets $3)"
|
|
f4="$1 dport {$2} $first_packets_only"
|
|
f6=$f4
|
|
nft_filter_apply_ipset_target f4 f6
|
|
nft_fw_nfqws_post "$f4" "$f6" $QNUM
|
|
}
|
|
[ -n "$4" -a "$4" != 0 ] &&
|
|
{
|
|
first_packets_only="$(nft_first_packets $4)"
|
|
f4="$1 dport {$2} $first_packets_only"
|
|
f6=$f4
|
|
nft_filter_apply_ipset_target f4 f6
|
|
nft_fw_reverse_nfqws_rule "$f4" "$f6" $QNUM
|
|
}
|
|
}
|
|
|
|
zapret_apply_firewall_standard_rules_nft()
|
|
{
|
|
local f4 f6
|
|
|
|
[ "$TPWS_ENABLE" = 1 -a -n "$TPWS_PORTS" ] &&
|
|
{
|
|
f4="tcp dport {$TPWS_PORTS}"
|
|
f6=$f4
|
|
nft_filter_apply_ipset_target f4 f6
|
|
nft_fw_tpws "$f4" "$f6" $TPPORT
|
|
}
|
|
[ "$NFQWS_ENABLE" = 1 ] &&
|
|
{
|
|
nft_apply_nfqws_in_out tcp "$NFQWS_PORTS_TCP" "$NFQWS_TCP_PKT_OUT" "$NFQWS_TCP_PKT_IN"
|
|
nft_apply_nfqws_in_out tcp "$NFQWS_PORTS_TCP_KEEPALIVE" keepalive "$NFQWS_TCP_PKT_IN"
|
|
nft_apply_nfqws_in_out udp "$NFQWS_PORTS_UDP" "$NFQWS_UDP_PKT_OUT" "$NFQWS_UDP_PKT_IN"
|
|
nft_apply_nfqws_in_out udp "$NFQWS_PORTS_UDP_KEEPALIVE" keepalive "$NFQWS_UDP_PKT_IN"
|
|
}
|
|
}
|
|
|
|
zapret_apply_firewall_rules_nft()
|
|
{
|
|
zapret_apply_firewall_standard_rules_nft
|
|
custom_runner zapret_custom_firewall_nft
|
|
}
|
|
|
|
zapret_apply_firewall_nft()
|
|
{
|
|
echo Applying nftables
|
|
|
|
create_ipset no-update
|
|
nft_create_firewall
|
|
nft_fill_ifsets_overload
|
|
|
|
zapret_apply_firewall_rules_nft
|
|
|
|
[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && nft_apply_flow_offloading
|
|
|
|
return 0
|
|
}
|
|
zapret_unapply_firewall_nft()
|
|
{
|
|
echo Clearing nftables
|
|
|
|
unprepare_route_localnet
|
|
nft_del_firewall
|
|
custom_runner zapret_custom_firewall_nft_flush
|
|
return 0
|
|
}
|
|
zapret_do_firewall_nft()
|
|
{
|
|
# $1 - 1 - add, 0 - del
|
|
|
|
if [ "$1" = 0 ] ; then
|
|
zapret_unapply_firewall_nft
|
|
else
|
|
zapret_apply_firewall_nft
|
|
fi
|
|
|
|
return 0
|
|
}
|