openmptcprouter-feeds/luci-app-omr-bypass/root/etc/init.d/omr-bypass

#!/bin/sh /etc/rc.common
# Copyright (C) 2018 Ycarus (Yannick Chabanois) <ycarus@zugaina.org>

START=99
STOP=10
USE_PROCD=1

. /usr/lib/unbound/iptools.sh

_bypass_ip() {
	local ip=$1
	local type=$2
	[ -z "$type" ] && type="all"
	valid_ip4=$( valid_subnet4 $ip)
	valid_ip6=$( valid_subnet6 $ip)
	if [ "$valid_ip4" = "ok" ]; then
		ipset -q add omr_rules_dst_bypass_$type $ip
	elif [ "$valid_ip6" = "ok" ]; then
		ipset -q add omr_rules6_dst_bypass_$type $ip
	fi
}

_bypass_domain() {
	local domain
	local intf
	config_get domain $1 name
	config_get intf $1 interface

	[ -z "$intf" ] && intf="all"
	if [ -n "$domain" ]; then
		logger -t "omr-bypass" "Get IPs of $domain..."
		if [ -z $BOOT ]; then
			resolve=$(dig a +timeout=3 +nocmd +noall +answer $domain | awk '{print $5}')
			for ip in $resolve; do
				_bypass_ip $ip $intf
			done
			resolve=$(dig aaaa +timeout=3 +nocmd +noall +answer $domain | awk '{print $5}')
			for ip in $resolve; do
				_bypass_ip $ip $intf
			done
		fi
		uci -q add_list dhcp.@dnsmasq[0].ipset="/$domain/omr_rules_dst_bypass_$intf,omr_rules6_dst_bypass_$intf"
		logger -t "omr-bypass" "Get IPs of $domain... Done"
	fi
}

_bypass_proto() {
	local proto
	local intf
	config_get proto $1 proto
	config_get intf $1 interface
	local intfid="$(uci -q get omr-bypass.$intf.id)"

	[ -z "$intf" ] && intf="all"
	[ -z "$proto" ] && return
	if [ "$intf" = "all" ]; then
		iptables-restore --wait=60  --noflush <<-EOF
		*mangle
		-A omr-bypass-dpi -m ndpi --$proto -j MARK --set-mark 0x539
		COMMIT
		EOF
		ip6tables-restore --wait=60  --noflush <<-EOF
		*mangle
		-A omr-bypass-dpi -m ndpi --$proto -j MARK --set-mark 0x6539
		COMMIT
		EOF
	else
		iptables-restore --wait=60  --noflush <<-EOF
		*mangle
		-A omr-bypass-dpi -m ndpi --$proto -j MARK --set-mark 0x539$intfid
		COMMIT
		EOF
		ip6tables-restore --wait=60  --noflush <<-EOF
		*mangle
		-A omr-bypass-dpi -m ndpi --$proto -j MARK --set-mark 0x6539$intfid
		COMMIT
		EOF
	fi
}

_intf_rule() {
	local intf
	config_get intf $1 ifname
	count=$((count+1))
	local mode
	config_get mode $1 multipath "off"
	[ "$mode" = "off" ] && return
	[ "$(echo $1 | grep _dev)" != "" ] && return
	ipset -q flush omr_rules_dst_bypass_$intf > /dev/null 2>&1
	ipset -q flush omr_rules6_dst_bypass_$intf > /dev/null 2>&1
	ipset -q --exist restore <<-EOF
	create omr_rules_dst_bypass_$intf hash:net hashsize 64
	create omr_rules6_dst_bypass_$intf hash:net family inet6 hashsize 64
	EOF
	ip rule add prio 1 fwmark 0x539$count lookup $count > /dev/null 2>&1
	ip -6 rule add prio 1 fwmark 0x6539$count lookup 6$count > /dev/null 2>&1
	if [ "$(iptables -w 40 -t mangle -L | grep omr_rules_dst_bypass_$intf)" = "" ]; then
		iptables-restore --wait=60 --noflush <<-EOF
		*mangle
		-I PREROUTING 1 -m set --match-set omr_rules_dst_bypass_$intf dst -j MARK --set-mark 0x539$count
		COMMIT
		EOF
	fi
	if [ "$(iptables -w 40 -t nat -L | grep ss_rules_pre_src)" != "" ] && [ "$(iptables -w 40 -t nat -L | grep omr_rules_dst_bypass_$intf)" = "" ]; then
		iptables-restore --wait=60 --noflush <<-EOF
		*nat
		-I ss_rules_dst 1 -m set --match-set omr_rules_dst_bypass_$intf dst -j RETURN
		-I ss_rules_local_out 1 -m set --match-set omr_rules_dst_bypass_$intf dst -j RETURN
		-I ss_rules_local_out 2 -m mark --mark 0x539$count -j RETURN
		-I ss_rules_pre_src 1 -m set --match-set omr_rules_dst_bypass_$intf dst -j MARK --set-mark 0x539$count
		-I ss_rules_pre_src 2 -m set --match-set omr_rules_dst_bypass_$intf dst -j RETURN
		-I ss_rules_pre_src 3 -m mark --mark 0x539$count -j RETURN
		COMMIT
		EOF
	fi
	if [ "$(ip6tables -w 40 -t mangle -L | grep omr_rules6_dst_bypass_$intf)" = "" ]; then
		ip6tables-restore --wait=60 --noflush <<-EOF
		*mangle
		-I PREROUTING 1 -m set --match-set omr_rules6_dst_bypass_$intf dst -j MARK --set-mark 0x6539$count
		COMMIT
		EOF
	fi
	if [ "$(ip6tables -w 40 -t nat -L | grep ss_rules6_pre_src)" != "" ] && [ "$(ip6tables -w 40 -t nat -L | grep omr_rules6_dst_bypass_$intf)" = "" ]; then
		ip6tables-restore --wait=60 --noflush <<-EOF
		*nat
		-I ss_rules6_dst 1 -m set --match-set omr_rules6_dst_bypass_$intf dst -j RETURN
		-I ss_rules6_local_out 1 -m set --match-set omr_rules6_dst_bypass_$intf dst -j RETURN
		-I ss_rules6_local_out 2 -m mark --mark 0x539$count -j RETURN
		-I ss_rules6_pre_src 1 -m set --match-set omr_rules6_dst_bypass_$intf dst -j MARK --set-mark 0x6539$count
		-I ss_rules6_pre_src 2 -m set --match-set omr_rules6_dst_bypass_$intf dst -j RETURN
		-I ss_rules6_pre_src 3 -m mark --mark 0x539$count -j RETURN
		COMMIT
		EOF
	fi
	uci -q set omr-bypass.$intf=interface
	uci -q set omr-bypass.$intf.id=$count
}

_bypass_ip_set() {
	local ip
	local interface
	config_get ip $1 ip
	config_get interface $1 interface
	_bypass_ip $ip $interface
}

boot() {
	BOOT=1
	start "$@"
}

start_service() {
	local count
	logger -t "omr-bypass" "Starting OMR-ByPass..."
	ipset -q flush omr_rules_dst_bypass_all > /dev/null 2>&1
	ipset -q flush omr_rules6_dst_bypass_all > /dev/null 2>&1
	ipset -q --exist restore <<-EOF
	create omr_rules_dst_bypass_all hash:net hashsize 64
	create omr_rules6_dst_bypass_all hash:net family inet6 hashsize 64
	EOF

	config_load network
	config_foreach _intf_rule interface

	local ndpi_rules=""
	config_load omr-bypass
	config_foreach _bypass_ip_set ips
	uci -q del dhcp.@dnsmasq[0].ipset
	config_foreach _bypass_domain domains
	uci -q commit dhcp
	/etc/init.d/dnsmasq reload

	ip rule add prio 1 fwmark 0x539 lookup 991337 > /dev/null 2>&1
	ip -6 rule add prio 1 fwmark 0x6539 lookup 6991337 > /dev/null 2>&1

	if [ "$(iptables -w 40 -t mangle -L | grep 'match-set omr_rules_dst_bypass_all dst MARK set')" = "" ]; then
		iptables-restore --wait=60 --noflush <<-EOF
		*mangle
		-A PREROUTING -m set --match-set omr_rules_dst_bypass_all dst -j MARK --set-mark 0x539
		COMMIT
		EOF
	fi
	if [ "$(iptables -w 40 -t nat -L | grep ss_rules_pre_src)" != "" ] && [ "$(iptables -w 40 -t nat -L | grep omr_rules_dst_bypass_all)" = "" ]; then
		iptables-restore --wait=60 --noflush <<-EOF
		*nat
		-I ss_rules_dst 1 -m set --match-set omr_rules_dst_bypass_all dst -j RETURN
		-I ss_rules_local_out 1 -m set --match-set omr_rules_dst_bypass_all dst -j RETURN
		-I ss_rules_local_out 2 -m mark --mark 0x539 -j RETURN
		-I ss_rules_pre_src 1 -m set --match-set omr_rules_dst_bypass_all dst -j MARK --set-mark 0x539
		-I ss_rules_pre_src 2 -m set --match-set omr_rules_dst_bypass_all dst -j RETURN
		-I ss_rules_pre_src 3 -m mark --mark 0x539 -j RETURN
		COMMIT
		EOF
	fi
	if [ "$(ip6tables -w 40 -t mangle -L | grep 'match-set omr_rules6_dst_bypass_all dst MARK set')" = "" ]; then
		ip6tables-restore --wait=60 --noflush <<-EOF
		*mangle
		-A PREROUTING -m set --match-set omr_rules6_dst_bypass_all dst -j MARK --set-mark 0x6539
		COMMIT
		EOF
	fi
	if [ "$(ip6tables -w 40 -t nat -L | grep ss_rules6_pre_src)" != "" ] && [ "$(ip6tables -w 40 -t nat -L | grep omr_rules6_dst_bypass_all)" = "" ]; then
		ip6tables-restore --wait=60 --noflush <<-EOF
		*nat
		-I ss_rules6_dst 1 -m set --match-set omr_rules6_dst_bypass_all dst -j RETURN
		-I ss_rules6_local_out 1 -m set --match-set omr_rules6_dst_bypass_all dst -j RETURN
		-I ss_rules6_local_out 2 -m mark --mark 0x6539 -j RETURN
		-I ss_rules6_pre_src 1 -m set --match-set omr_rules6_dst_bypass_all dst -j MARK --set-mark 0x6539
		-I ss_rules6_pre_src 2 -m set --match-set omr_rules6_dst_bypass_all dst -j RETURN
		-I ss_rules6_pre_src 3 -m mark --mark 0x6539 -j RETURN
		COMMIT
		EOF
	fi

	iptables-save --counters | grep -v omr-bypass-dpi | iptables-restore --counters
	iptables-restore --wait=60  --noflush <<-EOF
	*mangle
	:omr-bypass-dpi -
	-A PREROUTING -m addrtype ! --dst-type LOCAL -j omr-bypass-dpi
	-A POSTROUTING -m addrtype --dst-type LOCAL -j omr-bypass-dpi
	COMMIT
	EOF
	ip6tables-save --counters | grep -v omr-bypass-dpi | ip6tables-restore --counters
	ip6tables-restore --wait=60  --noflush <<-EOF
	*mangle
	:omr-bypass-dpi -
	-A PREROUTING -m addrtype ! --dst-type LOCAL -j omr-bypass-dpi
	-A POSTROUTING -m addrtype --dst-type LOCAL -j omr-bypass-dpi
	COMMIT
	EOF
	config_load omr-bypass
	config_foreach _bypass_proto dpis

	logger -t "omr-bypass" "OMR-ByPass is running"
}

stop() {
	iptables-save --counters | grep -v omr-bypass | iptables-restore --counters
	for setname in $(ipset -n list | grep "omr_"); do
		ipset destroy "$setname" 2>/dev/null || true
	done
}

service_triggers() {
	PROCD_RELOAD_DELAY=1000
	procd_add_reload_trigger omr-bypass
	procd_add_raw_trigger "interface.*" 2000 /etc/init.d/omr-bypass restart
}

reload_service() {
	[ "$(ipset -n list | grep omr_)" = "" ] && return 0
	start
}