mirror of
https://github.com/bol-van/zapret.git
synced 2025-05-24 22:32:58 +03:00
nftables support
This commit is contained in:
bol-van
@@ -1,29 +1,16 @@
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# init script functions library for desktop linux systems
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[ -n "$ZAPRET_BASE" ] || ZAPRET_BASE=/opt/zapret
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# SHOULD EDIT config
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. "$ZAPRET_BASE/config"
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. "$ZAPRET_BASE/common/base.sh"
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. "$ZAPRET_BASE/common/fwtype.sh"
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. "$ZAPRET_BASE/common/queue.sh"
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. "$ZAPRET_BASE/common/linux_iphelper.sh"
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. "$ZAPRET_BASE/common/ipt.sh"
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. "$ZAPRET_BASE/common/nft.sh"
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. "$ZAPRET_BASE/common/linux_fw.sh"
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exists()
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{
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which "$1" >/dev/null 2>/dev/null
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}
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existf()
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{
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type "$1" >/dev/null 2>/dev/null
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}
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is_linked_to_busybox()
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{
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local IFS F P
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IFS=:
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for path in $PATH; do
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F=$path/$1
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P="$(readlink $F)"
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if [ -z "$P" ] && [ -x $F ] && [ ! -L $F ]; then return 1; fi
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[ "${P%busybox*}" != "$P" ] && return
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done
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}
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user_exists()
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{
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id -u $1 >/dev/null 2>/dev/null
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@@ -111,89 +98,12 @@ IPSET_EXCLUDE="-m set ! --match-set nozapret"
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IPSET_EXCLUDE6="-m set ! --match-set nozapret6"
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on_off_function()
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{
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# $1 : function name on
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# $2 : function name off
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# $3 : 0 - off, 1 - on
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local F="$1"
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[ "$3" = "1" ] || F="$2"
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shift
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shift
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shift
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"$F" "$@"
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}
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ipt()
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{
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iptables -C "$@" >/dev/null 2>/dev/null || iptables -I "$@"
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}
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ipt_del()
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{
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iptables -C "$@" >/dev/null 2>/dev/null && iptables -D "$@"
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}
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ipt_add_del()
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{
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on_off_function ipt ipt_del "$@"
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}
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ipt6()
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{
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ip6tables -C "$@" >/dev/null 2>/dev/null || ip6tables -I "$@"
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}
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ipt6_del()
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{
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ip6tables -C "$@" >/dev/null 2>/dev/null && ip6tables -D "$@"
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}
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ipt6_add_del()
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{
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on_off_function ipt6 ipt6_del "$@"
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}
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# there's no route_localnet for ipv6
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# the best we can is to route to link local of the incoming interface
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# OUTPUT - can DNAT to ::1
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# PREROUTING - can't DNAT to ::1. can DNAT to link local of -i interface or to any global addr
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# not a good idea to expose tpws to the world (bind to ::)
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get_ipv6_linklocal()
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{
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# $1 - interface name. if empty - any interface
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local dev
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[ -n "$1" ] && dev="dev $1"
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ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope link.*$/\1/;t;d' | head -n 1
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}
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get_ipv6_global()
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{
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# $1 - interface name. if empty - any interface
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local dev
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[ -n "$1" ] && dev="dev $1"
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ip addr show $dev | sed -e 's/^.*inet6 \([^ ]*\)\/[0-9]* scope global.*$/\1/;t;d' | head -n 1
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}
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iface_is_up()
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{
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# $1 - interface name
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[ -f /sys/class/net/$1/operstate ] || return
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local state
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read state </sys/class/net/$1/operstate
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[ "$state" != "down" ]
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}
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wait_ifup()
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{
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# $1 - interface name
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local ct=0
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while
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iface_is_up $1 && return
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[ "$ct" -ge "$IFUP_WAIT_SEC" ] && break
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echo waiting for ifup of $1 for another $(($IFUP_WAIT_SEC - $ct)) seconds ...
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ct=$(($ct+1))
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sleep 1
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do :; done
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false
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}
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dnat6_target()
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{
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# $1 - lan network name
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@@ -231,30 +141,51 @@ dnat6_target()
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[ -n "$2" ] && eval $2="$DNAT6_TARGET"
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}
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set_route_localnet()
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{
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# $1 - 1 = enable, 0 = disable
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[ "$DISABLE_IPV4" = "1" ] || {
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local lan
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for lan in $IFACE_LAN ; do
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sysctl -q -w net.ipv4.conf.$lan.route_localnet=$1
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done
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}
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}
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prepare_route_localnet()
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{
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set_route_localnet 1
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}
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unprepare_route_localnet()
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{
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set_route_localnet 0
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}
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prepare_tpws_fw4()
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{
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# otherwise linux kernel will treat 127.0.0.0/8 as "martian" ip and refuse routing to it
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# NOTE : kernels <3.6 do not have this feature. consider upgrading or change DNAT to REDIRECT and do not bind to 127.0.0.0/8
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[ -n "$IFACE_LAN" ] && {
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iptables -N input_rule_zapret 2>/dev/null
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iptables -F input_rule_zapret
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iptables -A input_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
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iptables -A input_rule_zapret -d 127.0.0.0/8 -j DROP
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for lan in $IFACE_LAN ; do
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ipt INPUT -i $lan -j input_rule_zapret
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sysctl -q -w net.ipv4.conf.$lan.route_localnet=1
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done
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[ "$DISABLE_IPV4" = "1" ] || {
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[ -n "$IFACE_LAN" ] && {
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local lan
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iptables -N input_rule_zapret 2>/dev/null
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iptables -F input_rule_zapret
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iptables -A input_rule_zapret -d $TPWS_LOCALHOST4 -j RETURN
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iptables -A input_rule_zapret -d 127.0.0.0/8 -j DROP
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ipt INPUT ! -i lo -j input_rule_zapret
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prepare_route_localnet
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}
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}
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}
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unprepare_tpws_fw4()
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{
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[ -n "$IFACE_LAN" ] && {
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for lan in $IFACE_LAN ; do
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ipt_del INPUT -i $lan -j input_rule_zapret
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sysctl -q -w net.ipv4.conf.$lan.route_localnet=0
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done
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iptables -F input_rule_zapret 2>/dev/null
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iptables -X input_rule_zapret 2>/dev/null
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[ "$DISABLE_IPV4" = "1" ] || {
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[ -n "$IFACE_LAN" ] && {
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local lan
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unprepare_route_localnet
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ipt_del INPUT ! -i lo -j input_rule_zapret
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iptables -F input_rule_zapret 2>/dev/null
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iptables -X input_rule_zapret 2>/dev/null
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}
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}
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}
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unprepare_tpws_fw()
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@@ -263,7 +194,7 @@ unprepare_tpws_fw()
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}
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print_op()
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ipt_print_op()
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{
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if [ "$1" = "1" ]; then
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echo "Adding ip$4tables rule for $3 : $2"
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@@ -279,7 +210,7 @@ fw_tpws4()
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# $3 - tpws port
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[ "$DISABLE_IPV4" = "1" ] || {
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[ "$1" = 1 ] && prepare_tpws_fw4
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print_op $1 "$2" "tpws (port $3)"
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ipt_print_op $1 "$2" "tpws (port $3)"
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for lan in $IFACE_LAN ; do
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ipt_add_del $1 PREROUTING -t nat -i $lan -p tcp $2 $IPSET_EXCLUDE dst -j DNAT --to $TPWS_LOCALHOST4:$3
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done
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@@ -298,7 +229,7 @@ fw_tpws6()
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# $2 - iptable filter for ipv6
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# $3 - tpws port
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[ "$DISABLE_IPV6" = "1" ] || {
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print_op $1 "$2" "tpws (port $3)" 6
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ipt_print_op $1 "$2" "tpws (port $3)" 6
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local DNAT6
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for lan in $IFACE_LAN ; do
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dnat6_target $lan DNAT6
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@@ -330,7 +261,7 @@ fw_nfqws_pre4()
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# $2 - iptable filter for ipv4
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# $3 - queue number
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[ "$DISABLE_IPV4" = "1" ] || {
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print_op $1 "$2" "nfqws prerouting (qnum $3)"
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ipt_print_op $1 "$2" "nfqws prerouting (qnum $3)"
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if [ -n "$IFACE_WAN" ]; then
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for wan in $IFACE_WAN; do
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ipt_add_del $1 PREROUTING -t mangle -i $wan -p tcp $2 $IPSET_EXCLUDE src -j NFQUEUE --queue-num $3 --queue-bypass
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@@ -346,7 +277,7 @@ fw_nfqws_pre6()
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# $2 - iptable filter for ipv6
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# $3 - queue number
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[ "$DISABLE_IPV6" = "1" ] || {
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print_op $1 "$2" "nfqws prerouting (qnum $3)" 6
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ipt_print_op $1 "$2" "nfqws prerouting (qnum $3)" 6
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if [ -n "$IFACE_WAN" ]; then
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for wan in $IFACE_WAN; do
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ipt6_add_del $1 PREROUTING -t mangle -i $wan -p tcp $2 $IPSET_EXCLUDE6 src -j NFQUEUE --queue-num $3 --queue-bypass
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@@ -371,7 +302,7 @@ fw_nfqws_post4()
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# $2 - iptable filter for ipv4
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# $3 - queue number
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[ "$DISABLE_IPV4" = "1" ] || {
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print_op $1 "$2" "nfqws postrouting (qnum $3)"
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ipt_print_op $1 "$2" "nfqws postrouting (qnum $3)"
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if [ -n "$IFACE_WAN" ]; then
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for wan in $IFACE_WAN; do
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ipt_add_del $1 POSTROUTING -t mangle -o $wan -p tcp $2 $IPSET_EXCLUDE dst -j NFQUEUE --queue-num $3 --queue-bypass
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@@ -387,7 +318,7 @@ fw_nfqws_post6()
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# $2 - iptable filter for ipv6
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# $3 - queue number
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[ "$DISABLE_IPV6" = "1" ] || {
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print_op $1 "$2" "nfqws postrouting (qnum $3)" 6
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ipt_print_op $1 "$2" "nfqws postrouting (qnum $3)" 6
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if [ -n "$IFACE_WAN" ]; then
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for wan in $IFACE_WAN; do
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ipt6_add_del $1 POSTROUTING -t mangle -o $wan -p tcp $2 $IPSET_EXCLUDE6 dst -j NFQUEUE --queue-num $3 --queue-bypass
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@@ -407,6 +338,11 @@ fw_nfqws_post()
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fw_nfqws_post6 $1 "$3" $4
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}
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filter_apply_hostlist_target()
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{
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# $1 - var name of tpws or nfqws params
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[ "$MODE_FILTER" = "hostlist" ] && eval $1="\"\$$1 --hostlist=$HOSTLIST\""
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}
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run_daemon()
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{
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@@ -506,96 +442,6 @@ do_nfqws()
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do_daemon $1 $2 "$NFQWS" "$NFQWS_OPT_BASE $3"
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}
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filter_apply_port_target()
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{
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# $1 - var name of iptables filter
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local f
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if [ "$MODE_HTTP" = "1" ] && [ "$MODE_HTTPS" = "1" ]; then
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f="-m multiport --dports 80,443"
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elif [ "$MODE_HTTPS" = "1" ]; then
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f="--dport 443"
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elif [ "$MODE_HTTP" = "1" ]; then
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f="--dport 80"
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else
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echo WARNING !!! HTTP and HTTPS are both disabled
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fi
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eval $1="\"\$$1 $f\""
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}
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filter_apply_ipset_target4()
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{
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# $1 - var name of ipv4 iptables filter
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if [ "$MODE_FILTER" = "ipset" ]; then
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eval $1="\"\$$1 -m set --match-set zapret dst\""
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fi
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}
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filter_apply_ipset_target6()
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{
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# $1 - var name of ipv4 iptables filter
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if [ "$MODE_FILTER" = "ipset" ]; then
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eval $1="\"\$$1 -m set --match-set zapret6 dst\""
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fi
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}
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filter_apply_ipset_target()
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{
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# $1 - var name of ipv4 iptables filter
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# $2 - var name of ipv6 iptables filter
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filter_apply_ipset_target4 $1
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filter_apply_ipset_target6 $2
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}
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filter_apply_hostlist_target()
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{
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# $1 - var name of tpws or nfqws params
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[ "$MODE_FILTER" = "hostlist" ] && eval $1="\"\$$1 --hostlist=$HOSTLIST\""
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}
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get_nfqws_qnums()
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{
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# $1 - var name for ipv4 http
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# $2 - var name for ipv4 https
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# $3 - var name for ipv6 http
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# $4 - var name for ipv6 https
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local _qn _qns _qn6 _qns6
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[ "$DISABLE_IPV4" = "1" ] || {
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_qn=$QNUM
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_qns=$_qn
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[ "$NFQWS_OPT_DESYNC_HTTP" = "$NFQWS_OPT_DESYNC_HTTPS" ] || _qns=$(($QNUM+1))
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}
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[ "$DISABLE_IPV6" = "1" ] || {
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_qn6=$(($QNUM+2))
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_qns6=$(($QNUM+3))
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[ "$DISABLE_IPV4" = "1" ] || {
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if [ "$NFQWS_OPT_DESYNC_HTTP6" = "$NFQWS_OPT_DESYNC_HTTP" ]; then
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_qn6=$_qn;
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elif [ "$NFQWS_OPT_DESYNC_HTTP6" = "$NFQWS_OPT_DESYNC_HTTPS" ]; then
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_qn6=$_qns;
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fi
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if [ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTP" ]; then
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_qns6=$_qn;
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elif [ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTPS" ]; then
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_qns6=$_qns;
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fi
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}
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[ "$NFQWS_OPT_DESYNC_HTTPS6" = "$NFQWS_OPT_DESYNC_HTTP6" ] && _qns6=$_qn6;
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}
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if [ "$MODE_HTTP" = 1 ]; then
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eval $1=$_qn
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eval $3=$_qn6
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else
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eval $1=
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eval $3=
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fi
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if [ "$MODE_HTTPS" = 1 ]; then
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eval $2=$_qns
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eval $4=$_qns6
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else
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eval $2=
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eval $4=
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fi
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}
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||||
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tpws_apply_socks_binds()
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||||
{
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||||
local o
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||||
@@ -613,95 +459,11 @@ tpws_apply_socks_binds()
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||||
|
||||
create_ipset()
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||||
{
|
||||
echo "Creating ipset"
|
||||
echo "Creating ip list table (firewall type $FWTYPE)"
|
||||
"$IPSET_CR" "$@"
|
||||
}
|
||||
|
||||
|
||||
|
||||
zapret_do_firewall()
|
||||
{
|
||||
# $1 - 1 - add, 0 - del
|
||||
|
||||
local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:4"
|
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local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
|
||||
local f4 f6 qn qns qn6 qns6
|
||||
|
||||
# always create ipsets. ip_exclude ipset is required
|
||||
[ "$1" != "1" ] || create_ipset no-update
|
||||
|
||||
case "${MODE_OVERRIDE:-$MODE}" in
|
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tpws)
|
||||
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
|
||||
echo both http and https are disabled. not applying redirection.
|
||||
else
|
||||
filter_apply_port_target f4
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||||
f6=$f4
|
||||
filter_apply_ipset_target f4 f6
|
||||
fw_tpws $1 "$f4" "$f6" $TPPORT
|
||||
fi
|
||||
;;
|
||||
|
||||
nfqws)
|
||||
if [ ! "$MODE_HTTP" = "1" ] && [ ! "$MODE_HTTPS" = "1" ]; then
|
||||
echo both http and https are disabled. not applying redirection.
|
||||
else
|
||||
get_nfqws_qnums qn qns qn6 qns6
|
||||
if [ "$MODE_HTTP_KEEPALIVE" != "1" ] && [ -n "$qn" ] && [ "$qn" = "$qns" ]; then
|
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filter_apply_port_target f4
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||||
f4="$f4 $first_packet_only"
|
||||
filter_apply_ipset_target4 f4
|
||||
fw_nfqws_post4 $1 "$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 $1 "$f4 $desync" $qn
|
||||
fi
|
||||
if [ -n "$qns" ]; then
|
||||
f4="--dport 443 $first_packet_only"
|
||||
filter_apply_ipset_target4 f4
|
||||
fw_nfqws_post4 $1 "$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 $1 "$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 $1 "$f6 $desync" $qn6
|
||||
fi
|
||||
if [ -n "$qns6" ]; then
|
||||
f6="--dport 443 $first_packet_only"
|
||||
filter_apply_ipset_target6 f6
|
||||
fw_nfqws_post6 $1 "$f6 $desync" $qns6
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
;;
|
||||
custom)
|
||||
existf zapret_custom_firewall && zapret_custom_firewall $1
|
||||
;;
|
||||
esac
|
||||
[ "$1" = 0 ] && unprepare_tpws_fw
|
||||
|
||||
return 0
|
||||
}
|
||||
zapret_apply_firewall()
|
||||
{
|
||||
zapret_do_firewall 1 "$@"
|
||||
}
|
||||
zapret_unapply_firewall()
|
||||
{
|
||||
zapret_do_firewall 0 "$@"
|
||||
}
|
||||
|
||||
zapret_do_daemons()
|
||||
{
|
||||
# $1 - 1 - run, 0 - stop
|
||||
@@ -749,7 +511,6 @@ zapret_do_daemons()
|
||||
|
||||
return 0
|
||||
}
|
||||
|
||||
zapret_run_daemons()
|
||||
{
|
||||
zapret_do_daemons 1 "$@"
|
||||
@@ -758,3 +519,120 @@ zapret_stop_daemons()
|
||||
{
|
||||
zapret_do_daemons 0 "$@"
|
||||
}
|
||||
|
||||
|
||||
nft_fill_ifsets()
|
||||
{
|
||||
local script elements i 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 $ZAPRET_NFT_TABLE lanif"
|
||||
|
||||
[ -n "$IFACE_LAN" ] && {
|
||||
make_comma_list elements $IFACE_LAN
|
||||
script="${script}
|
||||
add element inet $ZAPRET_NFT_TABLE lanif { $elements }"
|
||||
}
|
||||
[ -n "$IFACE_WAN" ] && {
|
||||
make_comma_list elements $IFACE_WAN
|
||||
script="${script}
|
||||
add element inet $ZAPRET_NFT_TABLE wanif { $elements }
|
||||
add element inet $ZAPRET_NFT_TABLE wanif6 { $elements }"
|
||||
}
|
||||
echo "$script" | nft -f -
|
||||
|
||||
[ "$FLOWOFFLOAD" = 'software' -o "$FLOWOFFLOAD" = 'hardware' ] && {
|
||||
ALLDEVS=$(for i in $IFACE_LAN $IFACE_WAN; do echo $i; done | sort -u | xargs)
|
||||
[ -n "$ALLDEVS" ] && {
|
||||
[ "$FLOWOFFLOAD" = 'hardware' ] && nft_hw_offload_supported $ALLDEVS && flags=offload
|
||||
nft_create_or_update_flowtable "$flags" $ALLDEVS
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
nft_print_op()
|
||||
{
|
||||
echo "Adding nftables ipv$3 rule for $2 : $1"
|
||||
}
|
||||
|
||||
nft_fw_tpws4()
|
||||
{
|
||||
# $1 - filter ipv4
|
||||
# $2 - tpws port
|
||||
|
||||
[ "$DISABLE_IPV4" = "1" ] || {
|
||||
nft_print_op "$1" "tpws (port $2)" 4
|
||||
nft_add_rule dnat_output skuid != $WS_USER ${IFACE_WAN:+oifname @wanif }meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
|
||||
[ -n "$IFACE_LAN" ] && {
|
||||
prepare_route_localnet
|
||||
nft_add_rule dnat_pre iifname @lanif meta l4proto tcp $1 ip daddr != @nozapret dnat ip to $TPWS_LOCALHOST4:$2
|
||||
}
|
||||
}
|
||||
}
|
||||
nft_fw_tpws6()
|
||||
{
|
||||
# $1 - filter ipv6
|
||||
# $2 - tpws port
|
||||
|
||||
local lan DNAT6
|
||||
[ "$DISABLE_IPV6" = "1" ] || {
|
||||
nft_print_op "$1" "tpws (port $2)" 6
|
||||
nft_add_rule dnat_output skuid != $WS_USER ${IFACE_WAN:+oifname @wanif6 }meta l4proto tcp $1 ip6 daddr != @nozapret6 dnat ip6 to [::1]:$2
|
||||
for lan in $IFACE_LAN ; do
|
||||
dnat6_target $lan DNAT6
|
||||
[ "$DNAT6" != '-' ] && nft_add_rule dnat_pre iifname $lan 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
|
||||
# $2 - queue number
|
||||
|
||||
local rule
|
||||
|
||||
[ "$DISABLE_IPV4" = "1" ] || {
|
||||
nft_print_op "$1" "nfqws postrouting (qnum $2)" 4
|
||||
rule="${IFACE_WAN:+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
|
||||
# $2 - queue number
|
||||
|
||||
local DEVICE rule
|
||||
|
||||
[ "$DISABLE_IPV6" = "1" ] || {
|
||||
nft_print_op "$1" "nfqws postrouting (qnum $2)" 6
|
||||
rule="${IFACE_WAN:+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
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user