From 888f9cbf7dd6130db445d6a5a6b35b323f7308b5 Mon Sep 17 00:00:00 2001
From: bol-van <none@none.none>
Date: Wed, 6 Sep 2023 12:24:29 +0300
Subject: [PATCH] custom script for RKN DHT BLOCK : custom-nfqws-dht4all

---
 init.d/openwrt/custom-nfqws-dht4all | 46 ++++++++++++++++++++++++++++
 init.d/sysv/custom-nfqws-dht4all    | 47 +++++++++++++++++++++++++++++
 2 files changed, 93 insertions(+)
 create mode 100644 init.d/openwrt/custom-nfqws-dht4all
 create mode 100644 init.d/sysv/custom-nfqws-dht4all

diff --git a/init.d/openwrt/custom-nfqws-dht4all b/init.d/openwrt/custom-nfqws-dht4all
new file mode 100644
index 0000000..43c727a
--- /dev/null
+++ b/init.d/openwrt/custom-nfqws-dht4all
@@ -0,0 +1,46 @@
+# this custom script in addition to MODE=nfqws runs desync to DHT packets with udp payload length 101..399 , without ipset/hostlist filtering
+# need to add to config : "NFQWS_OPT_DESYNC_DHT="--dpi-desync=fake --dpi-desync-any-protocol --dpi-desync-cutoff=d2 --dpi-desync-ttl=5"
+
+QNUM2=$(($QNUM+20))
+
+zapret_custom_daemons()
+{
+        # stop logic is managed by procd
+
+        local MODE_OVERRIDE=nfqws
+        local opt
+
+        start_daemons_procd
+
+        opt="--qnum=$QNUM2 $NFQWS_OPT_BASE $NFQWS_OPT_DESYNC_DHT"
+        run_daemon 100 $NFQWS "$opt"
+}
+zapret_custom_firewall()
+{
+        # $1 - 1 - run, 0 - stop
+
+        local MODE_OVERRIDE=nfqws
+        local f
+        local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:1"
+        local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
+
+        zapret_do_firewall_rules_ipt $1
+
+        f="-p udp -m length --length 109:407"
+        fw_nfqws_post $1 "$f $desync $first_packets_only" "$f $desync $first_packets_only" $QNUM2
+
+}
+zapret_custom_firewall_nft()
+{
+        # stop logic is not required
+
+        local MODE_OVERRIDE=nfqws
+        local f
+        local first_packet_only="ct original packets 1"
+        local desync="mark and $DESYNC_MARK == 0"
+
+        zapret_apply_firewall_rules_nft
+
+        f="meta length 109-407 meta l4proto udp @th,64,16 0x6431"
+        nft_fw_nfqws_post "$f $desync $first_packet_only" "$f $desync $first_packet_only" $QNUM2
+}
diff --git a/init.d/sysv/custom-nfqws-dht4all b/init.d/sysv/custom-nfqws-dht4all
new file mode 100644
index 0000000..5aad9a9
--- /dev/null
+++ b/init.d/sysv/custom-nfqws-dht4all
@@ -0,0 +1,47 @@
+# this custom script in addition to MODE=nfqws runs desync to DHT packets with udp payload length 101..399 , without ipset/hostlist filtering
+# need to add to config : "NFQWS_OPT_DESYNC_DHT="--dpi-desync=fake --dpi-desync-any-protocol --dpi-desync-cutoff=d2 --dpi-desync-ttl=5"
+
+QNUM2=$(($QNUM+20))
+
+zapret_custom_daemons()
+{
+        # stop logic is managed by procd
+
+        local MODE_OVERRIDE=nfqws
+        local opt
+
+        zapret_do_daemons $1
+
+        opt="--qnum=$QNUM2 $NFQWS_OPT_BASE $NFQWS_OPT_DESYNC_DHT"
+	do_nfqws $1 100 "$opt"
+}
+zapret_custom_firewall()
+{
+        # $1 - 1 - run, 0 - stop
+
+        local MODE_OVERRIDE=nfqws
+        local f
+        local first_packet_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1"
+        local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
+
+        zapret_do_firewall_rules_ipt $1
+
+        f="-p udp -m length --length 109:407"
+        fw_nfqws_post $1 "$f $desync $first_packets_only" "$f $desync $first_packets_only" $QNUM2
+
+}
+zapret_custom_firewall_nft()
+{
+        # stop logic is not required
+
+        local MODE_OVERRIDE=nfqws
+        local f
+        local first_packet_only="ct original packets 1"
+        local desync="mark and $DESYNC_MARK == 0"
+
+        zapret_apply_firewall_rules_nft
+
+        f="meta length 109-407 meta l4proto udp @th,64,16 0x6431"
+        nft_fw_nfqws_post "$f $desync $first_packet_only" "$f $desync $first_packet_only" $QNUM2
+}
+