From 378b7ebf262957fe426ce3840cce35271fa10641 Mon Sep 17 00:00:00 2001
From: bol-van <none@none.none>
Date: Fri, 4 Mar 2022 19:41:34 +0300
Subject: [PATCH] init.d: QUIC customs

---
 init.d/openwrt/custom-nfqws-quic4all | 47 ++++++++++++++++++++++++++++
 init.d/sysv/custom-nfqws-quic4all    | 47 ++++++++++++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 init.d/openwrt/custom-nfqws-quic4all
 create mode 100644 init.d/sysv/custom-nfqws-quic4all

diff --git a/init.d/openwrt/custom-nfqws-quic4all b/init.d/openwrt/custom-nfqws-quic4all
new file mode 100644
index 0000000..e6d6ae7
--- /dev/null
+++ b/init.d/openwrt/custom-nfqws-quic4all
@@ -0,0 +1,47 @@
+# this custom script in addition to MODE=nfqws runs desync to all QUIC initial packets, without ipset/hostlist filtering
+# need to add to config : NFQWS_OPT_DESYNC_QUIC="--dpi-desync=fake --dpi-desync-fooling=badsum --dpi-desync-cutoff=d4"
+# NOTE : do not use TTL fooling. chromium QUIC engine breaks sessions if TTL expired in transit received
+
+QNUM2=$(($QNUM+10))
+
+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_QUIC"
+	run_daemon 100 $NFQWS "$opt"
+}
+zapret_custom_firewall()
+{
+	# $1 - 1 - run, 0 - stop
+
+	local MODE_OVERRIDE=nfqws
+	local f
+	local first_packets_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:3"
+	local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
+
+	zapret_do_firewall_rules_ipt $1
+
+	f="-p udp --dport 443"
+	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_packets_only="ct original packets 1-3"
+	local desync="mark and $DESYNC_MARK == 0"
+
+	zapret_apply_firewall_rules_nft
+
+	f="udp dport 443"
+	nft_fw_nfqws_post $1 "$f $desync $first_packets_only" "$f $desync $first_packets_only" $QNUM2
+}
diff --git a/init.d/sysv/custom-nfqws-quic4all b/init.d/sysv/custom-nfqws-quic4all
new file mode 100644
index 0000000..3542c39
--- /dev/null
+++ b/init.d/sysv/custom-nfqws-quic4all
@@ -0,0 +1,47 @@
+# this custom script in addition to MODE=nfqws runs desync to all QUIC initial packets, without ipset/hostlist filtering
+# need to add to config : NFQWS_OPT_DESYNC_QUIC="--dpi-desync=fake --dpi-desync-fooling=badsum --dpi-desync-cutoff=d4"
+# NOTE : do not use TTL fooling. chromium QUIC engine breaks sessions if TTL expired in transit received
+
+QNUM2=$(($QNUM+10))
+
+zapret_custom_daemons()
+{
+	# $1 - 1 - run, 0 - stop
+
+	local MODE_OVERRIDE=nfqws
+	local opt
+
+	zapret_do_daemons $1
+
+	opt="--qnum=$QNUM2 $NFQWS_OPT_BASE $NFQWS_OPT_DESYNC_QUIC"
+	do_nfqws $1 100 "$opt"
+}
+zapret_custom_firewall()
+{
+	# $1 - 1 - run, 0 - stop
+
+	local MODE_OVERRIDE=nfqws
+	local f
+	local first_packets_only="-m connbytes --connbytes-dir=original --connbytes-mode=packets --connbytes 1:3"
+	local desync="-m mark ! --mark $DESYNC_MARK/$DESYNC_MARK"
+
+	zapret_do_firewall_rules_ipt $1
+
+	f="-p udp --dport 443"
+	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_packets_only="ct original packets 1-3"
+	local desync="mark and $DESYNC_MARK == 0"
+
+	zapret_apply_firewall_rules_nft
+
+	f="udp dport 443"
+	nft_fw_nfqws_post $1 "$f $desync $first_packets_only" "$f $desync $first_packets_only" $QNUM2
+}