zapret/init.d/custom.d.examples.linux/50-wg4all

# this custom script runs desync to all wireguard handshake initiation packets

# can override in config :
NFQWS_OPT_DESYNC_WG="${NFQWS_OPT_DESYNC_WG:---dpi-desync=fake}"

alloc_dnum DNUM_WG4ALL
alloc_qnum QNUM_WG4ALL

zapret_custom_daemons()
{
	# $1 - 1 - add, 0 - stop

        local opt="--qnum=$QNUM_WG4ALL $NFQWS_OPT_DESYNC_WG"
	do_nfqws $1 $DNUM_WG4ALL "$opt"
}
# size = 156 (8 udp header + 148 payload) && payload starts with 0x01000000
zapret_custom_firewall()
{
        # $1 - 1 - run, 0 - stop

        local f='-p udp -m u32 --u32'
        fw_nfqws_post $1 "$f 0>>22&0x3C@4>>16=0x9c&&0>>22&0x3C@8=0x01000000" "$f 44>>16=0x9c&&48=0x01000000" $QNUM_WG4ALL
}
zapret_custom_firewall_nft()
{
        # stop logic is not required

        local f="udp length 156 @th,64,32 0x01000000"
        nft_fw_nfqws_post "$f" "$f" $QNUM_WG4ALL
}