#!/bin/sh /etc/rc.common
# Copyright 2020-2022 Stan Grishin (stangri@melmac.ca)
# shellcheck disable=SC1091,SC2018,SC2019,SC3043,SC3057,SC3060

# sysctl net.ipv4.conf.default.rp_filter=1
# sysctl net.ipv4.conf.all.rp_filter=1

# shellcheck disable=SC2034
START=94
# shellcheck disable=SC2034
USE_PROCD=1

if type extra_command >/dev/null 2>&1; then
	extra_command 'status' "Generates output required to troubleshoot routing issues
		Use '-d' option for more detailed output
		Use '-p' option to automatically upload data under VPR paste.ee account
			WARNING: while paste.ee uploads are unlisted, they are still publicly available
		List domain names after options to include their lookup in report"
	extra_command 'version' 'Show version information'
	extra_command 'on_firewall_reload' '	Run service on firewall reload'
	extra_command 'on_interface_reload' '	Run service on indicated interface reload'
else
# shellcheck disable=SC2034
	EXTRA_COMMANDS='on_firewall_reload on_interface_reload status version'
# shellcheck disable=SC2034
	EXTRA_HELP="	status	Generates output required to troubleshoot routing issues
		Use '-d' option for more detailed output
		Use '-p' option to automatically upload data under VPR paste.ee account
			WARNING: while paste.ee uploads are unlisted, they are still publicly available
		List domain names after options to include their lookup in report"
fi

readonly PKG_VERSION='dev-test'
readonly packageName='pbr'
readonly serviceName="$packageName $PKG_VERSION"
readonly serviceTrapSignals='exit SIGHUP SIGQUIT SIGKILL'
readonly packageConfigFile="/etc/config/${packageName}"
readonly nftTempFile="/var/run/${packageName}.nft"
#readonly nftPermFile="/etc/nftables.d/table-post/30-pbr.nft"
readonly dnsmasqFile="/var/dnsmasq.d/${packageName}"
readonly sharedMemoryOutput="/dev/shm/$packageName-output"
readonly _OK_='\033[0;32m\xe2\x9c\x93\033[0m'
readonly _FAIL_='\033[0;31m\xe2\x9c\x97\033[0m'
readonly __OK__='\033[0;32m[\xe2\x9c\x93]\033[0m'
readonly __FAIL__='\033[0;31m[\xe2\x9c\x97]\033[0m'
readonly _ERROR_='\033[0;31mERROR\033[0m'
readonly _WARNING_='\033[0;33mWARNING\033[0m'
readonly ip_full='/usr/libexec/ip-full'
readonly ipTablePrefix='pbr'
# shellcheck disable=SC2155
readonly iptables="$(command -v iptables)"
# shellcheck disable=SC2155
readonly ip6tables="$(command -v ip6tables)"
# shellcheck disable=SC2155
readonly ipset="$(command -v ipset)"
readonly ipsPrefix='pbr'
readonly iptPrefix='PBR'
# shellcheck disable=SC2155
readonly agh="$(command -v AdGuardHome)"
readonly aghConfigFile='/etc/adguardhome.yaml'
readonly aghIpsetFile="/var/run/${packageName}.adguardhome.ipsets"
# shellcheck disable=SC2155
readonly nft="$(command -v nft)"
readonly nftTable="fw4"
readonly nftPrefix='pbr'
readonly chainsList='forward input output postrouting prerouting'

# package config options
boot_timeout=
enabled=
fw_mask=
icmp_interface=
ignored_interface=
ipv6_enabled=
nft_user_set_policy=
nft_user_set_counter=
procd_boot_delay=
procd_reload_delay=
resolver_set=
rule_create_option=
secure_reload=
strict_enforcement=
supported_interface=
verbosity=
wan_ip_rules_priority=
wan_mark=

# run-time
gatewaySummary=
errorSummary=
warningSummary=
wanIface4=
wanIface6=
ifaceMark=
ifaceTableID=
ifacePriority=
ifacesAll=
ifacesSupported=
wanGW4=
wanGW6=
serviceStartTrigger=
processPolicyError=
processPolicyWarning=
resolver_set_supported=
nftPrevParam4=
nftPrevParam6=

get_text() {
	local r
	case "$1" in
		errorConfigValidation) r="Config ($packageConfigFile) validation failure!";;
		errorNoIpFull) r="ip-full binary cannot be found!";;
		errorNoIptables) r="iptables binary cannot be found!";;
		errorNoIpset) r="Resolver set support (${resolver_set}) requires ipset, but ipset binary cannot be found!";;
		errorNoNft) r="Resolver set support (${resolver_set}) requires nftables, but nft binary cannot be found!";;
		errorResolverNotSupported) r="Resolver set (${resolver_set}) is not supported on this system!";;
		errorServiceDisabled) r="The ${packageName} service is currently disabled!";;
		errorNoWanGateway) r="The ${serviceName} service failed to discover WAN gateway!";;
		errorIpsetNameTooLong) r="The ipset name '%s' is longer than allowed 31 characters!";;
		errorNftsetNameTooLong) r="The nft set name '%s' is longer than allowed 31 characters!";;
		errorUnexpectedExit) r="Unexpected exit or service termination: '%s'!";;
		errorPolicyNoSrcDest) r="Policy '%s' has no source/destination parameters!";;
		errorPolicyNoInterface) r="Policy '%s' has no assigned interface!";;
		errorPolicyUnknownInterface) r="Policy '%s' has an unknown interface!";;
		errorPolicyProcessCMD) r="%s";;
		errorFailedSetup) r="Failed to set up '%s'!";;
		errorFailedReload) r="Failed to reload '%s'!";;
		errorUserFileNotFound) r="Custom user file '%s' not found or empty!";;
		ererrorUserFileSyntax) r="Syntax error in custom user file '%s'!";;
		errorUserFileRunning) r="Error running custom user file '%s'!";;
		errorUserFileNoCurl) r="Use of 'curl' is detected in custom user file '%s', but 'curl' isn't installed!";;
		errorNoGateways) r="Failed to set up any gateway!";;
		errorResolver) r="Resolver %s";;
		errorPolicyProcessNoIpv6) r="Skipping IPv6 policy '%s' as IPv6 support is disabled";;
		errorPolicyProcessUnknownFwmark) r="Unknown packet mark for interface '%s'";;
		errorPolicyProcessMismatchFamily) r="Mismatched IP family between in policy %s";;
		errorPolicyProcessUnknownProtocol) r="Unknown protocol in policy %s";;
		errorPolicyProcessInsertionFailed) r="Insertion failed for both IPv4 and IPv6 for policy %s";;
		errorPolicyProcessInsertionFailedIpv4) r="Insertion failed for IPv4 for policy %s";;
		errorInterfaceRoutingEmptyValues) r="Received empty tid/mark or interface name when setting up routing";;
		errorFailedToResolve) r="Failed to resolve %s";;
		warningResolverNotSupported) r="Resolver set (${resolver_set}) is not supported on this system.";;
		warningAGHVersionTooLow) r="Installed AdGuardHome (%s) doesn't support 'ipset_file' option.";;
		warningPolicyProcessCMD) r="%s";;
		warningTorUnsetParams) r="Please unset 'src_addr', 'src_port' and 'dest_port' for policy '%s'";;
		warningTorUnsetProto) r="Please unset 'proto' or set 'proto' to 'all' for policy '%s'";;
		warningTorUnsetChainIpt) r="Please unset 'chain' or set 'chain' to 'PREROUTING' for policy '%s'";;
		warningTorUnsetChainNft) r="Please unset 'chain' or set 'chain' to 'prerouting' for policy '%s'";;
	esac
	echo "$r"
}

version() { echo "$PKG_VERSION"; }
output_ok() { output 1 "$_OK_"; output 2 "$__OK__\\n"; }
output_okn() { output 1 "$_OK_\\n"; output 2 "$__OK__\\n"; }
output_fail() { s=1; output 1 "$_FAIL_"; output 2 "$__FAIL__\\n"; }
output_failn() { output 1 "$_FAIL_\\n"; output 2 "$__FAIL__\\n"; }
# shellcheck disable=SC2317
str_replace() { printf "%b" "$1" | sed -e "s/$(printf "%b" "$2")/$(printf "%b" "$3")/g"; }
str_replace() { echo "${1//$2/$3}"; }
str_contains() { [ -n "$1" ] &&[ -n "$2" ] && [ "${1//$2}" != "$1" ]; }
is_greater() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" != "$1"; }
is_greater_or_equal() { test "$(printf '%s\n' "$@" | sort -V | head -n 1)" = "$2"; }
str_contains_word() { echo "$1" | grep -q -w "$2"; }
str_to_lower() { echo "$1" | tr 'A-Z' 'a-z'; }
str_to_upper() { echo "$1" | tr 'a-z' 'A-Z'; }
str_extras_to_underscore() { echo "$1" | tr '[\. ~`!@#$%^&*()\+/,<>?//;:]' '_'; }
str_extras_to_space() { echo "$1" | tr ';{}' ' '; }
debug() { local i j; for i in "$@"; do eval "j=\$$i"; echo "${i}: ${j} "; done; }
output() {
# Can take a single parameter (text) to be output at any verbosity
# Or target verbosity level and text to be output at specifc verbosity
	local msg memmsg logmsg
	verbosity="${verbosity:-2}"
	if [ "$#" -ne 1 ]; then
		if [ $((verbosity & $1)) -gt 0 ] || [ "$verbosity" = "$1" ]; then shift; else return 0; fi
	fi
	[ -t 1 ] && printf "%b" "$1"
	msg="${1//$serviceName /service }";
	if [ "$(printf "%b" "$msg" | wc -l)" -gt 0 ]; then
		[ -s "$sharedMemoryOutput" ] && memmsg="$(cat "$sharedMemoryOutput")"
		logmsg="$(printf "%b" "${memmsg}${msg}" | sed 's/\x1b\[[0-9;]*m//g')"
		logger -t "${packageName:-service}" "$(printf "%b" "$logmsg")"
		rm -f "$sharedMemoryOutput"
	else
		printf "%b" "$msg" >> "$sharedMemoryOutput"
	fi
}
is_present() { command -v "$1" >/dev/null 2>&1; }
is_installed() { [ -s "/usr/lib/opkg/info/${1}.control" ]; }
is_variant_installed() { [ "$(echo /usr/lib/opkg/info/"${1}"*.control)" != "/usr/lib/opkg/info/${1}*.control" ]; }
is_nft() { [ -x "$nft" ] && ! str_contains "$resolver_set" 'ipset' && "$nft" list chains inet | grep -q "${nftPrefix}_prerouting"; }
_build_ifaces_all() { ifacesAll="${ifacesAll}${1} "; }
_build_ifaces_supported() { is_supported_interface "$1" && ifacesSupported="${ifacesSupported}${1} "; }
pbr_find_iface() {
	local iface i param="$2"
	[ "$param" = 'wan6' ] || param='wan'
	"network_find_${param}" iface
	is_tunnel "$iface" && unset iface
	if [ -z "$iface" ]; then
		for i in $ifacesAll; do
			if "is_${param}" "$i"; then break; else unset i; fi
		done
	fi
	eval "$1"='${iface:-$i}'
}
pbr_get_gateway() {
	local iface="$2" dev="$3" gw
	network_get_gateway gw "$iface" true
	if [ -z "$gw" ] || [ "$gw" = '0.0.0.0' ]; then
#		gw="$(ubus call "network.interface.${iface}" status | jsonfilter -e "@.route[0].nexthop")"
		gw="$($ip_full -4 a list dev "$dev" 2>/dev/null | grep inet | awk '{print $2}' | awk -F "/" '{print $1}')"
	fi
	eval "$1"='$gw'
}
pbr_get_gateway6() {
	local iface="$2" dev="$3" gw
	network_get_gateway6 gw "$iface" true
	if [ -z "$gw" ] || [ "$gw" = '::/0' ] || [ "$gw" = '::0/0' ] || [ "$gw" = '::' ]; then
		gw="$($ip_full -6 a list dev "$dev" 2>/dev/null | grep inet6 | awk '{print $2}')"
	fi
	eval "$1"='$gw'
}
is_dslite() { local proto; proto=$(uci -q get network."$1".proto); [ "${proto:0:6}" = "dslite" ]; }
is_l2tp() { local proto; proto=$(uci -q get network."$1".proto); [ "${proto:0:4}" = "l2tp" ]; }
is_oc() { local proto; proto=$(uci -q get network."$1".proto); [ "${proto:0:11}" = "openconnect" ]; }
is_ovpn() { local dev; network_get_device dev "$1"; [ "${dev:0:3}" = "tun" ] || [ "${dev:0:3}" = "tap" ] || [ -f "/sys/devices/virtual/net/${dev}/tun_flags" ]; }
is_pptp() { local proto; proto=$(uci -q get network."$1".proto); [ "${proto:0:4}" = "pptp" ]; }
is_softether() { local dev; network_get_device dev "$1"; [ "${dev:0:4}" = "vpn_" ]; }
is_tor() { [ "$(str_to_lower "$1")" = "tor" ]; }
is_tor_running() { 
	local ret=0
	if [ -s "/etc/tor/torrc" ]; then
		json_load "$(ubus call service list "{ 'name': 'tor' }")"
		json_select 'tor'; json_select 'instances'; json_select 'instance1';
		json_get_var ret 'running'; json_cleanup
	fi
	if [ "$ret" = "0" ]; then return 1; else return 0; fi
}
is_wg() { local proto; proto=$(uci -q get network."$1".proto); [ "${proto:0:9}" = "wireguard" ]; }
is_tunnel() { is_dslite "$1" || is_l2tp "$1" || is_oc "$1" || is_ovpn "$1" || is_pptp "$1" || is_softether "$1" || is_tor "$1" || is_wg "$1"; }
is_wan() { [ "$1" = "$wanIface4" ] || { [ "${1##wan}" != "$1" ] && [ "${1##wan6}" = "$1" ]; } || [ "${1%%wan}" != "$1" ]; }
is_wan6() { [ -n "$wanIface6" ] && [ "$1" = "$wanIface6" ] || [ "${1/#wan6}" != "$1" ] || [ "${1/%wan6}" != "$1" ]; }
is_ignored_interface() { str_contains_word "$ignored_interface" "$1"; }
is_supported_interface() { str_contains_word "$supported_interface" "$1" || { ! is_ignored_interface "$1" && { is_wan "$1" || is_wan6 "$1" || is_tunnel "$1"; }; } || is_ignore_target "$1"; }
is_ignore_target() { [ "$(str_to_lower "$1")" = 'ignore' ]; }
is_mac_address() { expr "$1" : '[0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]:[0-9a-fA-F][0-9a-fA-F]$' >/dev/null; }
is_ipv4() { expr "$1" : '[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*\.[0-9][0-9]*$' >/dev/null; }
is_ipv6() { ! is_mac_address "$1" && str_contains "$1" ":"; }
is_family_mismatch() { ( is_netmask "${1//!}" && is_ipv6 "${2//!}" ) || ( is_ipv6 "${1//!}" && is_netmask "${2//!}" ); }
is_ipv6_link_local() { [ "${1:0:4}" = "fe80" ]; }
is_ipv6_unique_local() { [ "${1:0:2}" = "fc" ] || [ "${1:0:2}" = "fd" ]; }
is_ipv6_global() { [ "${1:0:4}" = "2001" ]; }
# is_ipv6_global() { is_ipv6 "$1" && ! is_ipv6_link_local "$1" && ! is_ipv6_link_local "$1"; }
is_list() { str_contains "$1" "," || str_contains "$1" " "; }
is_netmask() { local ip="${1%/*}"; [ "$ip" != "$1" ] && is_ipv4 "$ip"; }
is_domain() { str_contains "$1" '[a-zA-Z]'; }
is_phys_dev() { [ "${1:0:1}" = "@" ] && ip l show | grep -E -q "^\\d+\\W+${1:1}"; }
dnsmasq_kill() { killall -q -s HUP dnsmasq; }
dnsmasq_restart() { output 3 'Restarting dnsmasq '; if /etc/init.d/dnsmasq restart >/dev/null 2>&1; then output_okn; else output_failn; fi; }
is_default_dev() { [ "$1" = "$($ip_full -4 r | grep -m1 'dev' | grep -Eso 'dev [^ ]*' | awk '{print $2}')" ]; }
is_supported_iface_dev() { local n dev; for n in $ifacesSupported; do network_get_device dev "$n"; [ "$1" = "$dev" ] && return 0; done; return 1; }
is_supported_protocol() { grep -o '^[^#]*' /etc/protocols | grep -w -v '0' | grep . | awk '{print $1}' | grep -q "$1"; }
is_service_running_iptables() { [ -x "$iptables" ] && "$iptables" -t mangle -L | grep -q "${iptPrefix}_PREROUTING" >/dev/null 2>&1; }
is_service_running_nft() { [ -x "$nft" ] && [ -n "$(get_mark_nft_chains)" ]; }
# atomic
# is_service_running_nft() { [ -x "$nft" ] && [ -s "$nftPermFile" ]; }
is_service_running() { if is_nft; then is_service_running_nft; else is_service_running_iptables; fi; }
is_netifd_table() { local iface="$1"; [ "$(uci -q get "network.${iface}.ip4table")" = "${packageName}_${iface%6}" ]; }
get_rt_tables_id() { local iface="$1"; grep "${ipTablePrefix}_${iface}\$" '/etc/iproute2/rt_tables' | awk '{print $1;}'; }
get_rt_tables_next_id() { echo "$(($(sort -r -n '/etc/iproute2/rt_tables' | grep -o -E -m 1 "^[0-9]+")+1))"; }
_check_config() { local en; config_get_bool en "$1" 'enabled' 1; [ "$en" -gt 0 ] && _cfg_enabled=0; }
is_config_enabled() {
	local cfg="$1" _cfg_enabled=1
	[ -n "$1" ] || return 1
	config_load "$packageName"
	config_foreach _check_config "$cfg"
	return "$_cfg_enabled"
}
# shellcheck disable=SC2016
resolveip_to_ipt() { resolveip "$@" | sed -n 'H;${x;s/\n/,/g;s/^,//;p;};d'; }
resolveip_to_ipt4() { resolveip_to_ipt -4 "$@"; }
resolveip_to_ipt6() { [ -n "$ipv6_enabled" ] && resolveip_to_ipt -6 "$@"; }
# shellcheck disable=SC2016
resolveip_to_nftset() { resolveip "$@" | sed -n 'H;${x;s/\n/,/g;s/^,//;p;};d' | tr '\n' ' '; }
resolveip_to_nftset4() { resolveip_to_nftset -4 "$@"; }
resolveip_to_nftset6() { [ -n "$ipv6_enabled" ] && resolveip_to_nftset -6 "$@"; }
# shellcheck disable=SC2016
ipv4_leases_to_nftset() { [ -s '/tmp/dhcp.leases' ] || return 1; grep "$1" '/tmp/dhcp.leases' | awk '{print $3}' | sed -n 'H;${x;s/\n/,/g;s/^,//;p;};d' | tr '\n' ' '; }
# shellcheck disable=SC2016
ipv6_leases_to_nftset() { [ -s '/tmp/hosts/odhcpd' ] || return 1; grep -v '^\#' '/tmp/hosts/odhcpd' | grep "$1" | awk '{print $1}' | sed -n 'H;${x;s/\n/,/g;s/^,//;p;};d' | tr '\n' ' '; }
# shellcheck disable=SC3037
ports_to_nftset() { echo -ne "$value"; }
get_mark_ipt_chains() { [ -n "$(command -v iptables-save)" ] && iptables-save | grep ":${iptPrefix}_MARK_" | awk '{ print $1 }' | sed 's/://'; }
get_mark_nft_chains() { [ -x "$nft" ] && "$nft" list table inet "$nftTable" 2>/dev/null | grep chain | grep "${nftPrefix}_mark_" | awk '{ print $2 }'; }
get_ipsets() { [ -x "$(command -v ipset)" ] && ipset list | grep "${ipsPrefix}_" | awk '{ print $2 }'; }
get_nft_sets() { [ -x "$nft" ] && "$nft" list table inet "$nftTable" 2>/dev/null | grep 'set' | grep "${nftPrefix}_" | awk '{ print $2 }'; }
is_ipset_type_supported() { ipset help hash:"$1" >/dev/null 2>&1; }
ubus_get_status() { ubus call service list "{ 'name': '$packageName' }" | jsonfilter -e "@.${packageName}.instances.main.data.status.${1}"; }
ubus_get_iface() { ubus call service list "{ 'name': '$packageName' }" | jsonfilter -e "@.${packageName}.instances.main.data.interfaces[@.name='${1}']${2:+.$2}"; }

load_package_config() {
	config_load "$packageName"
	config_get      boot_timeout             'config' 'boot_timeout' '30'
	config_get_bool enabled                  'config' 'enabled' '0'
	config_get      fw_mask                  'config' 'fw_mask' 'ff0000'
	config_get      icmp_interface           'config' 'icmp_interface'
	config_get      ignored_interface        'config' 'ignored_interface'
	config_get_bool ipv6_enabled             'config' 'ipv6_enabled' '0'
	config_get      nft_user_set_policy      'config' 'nft_user_set_policy' 'memory'
	config_get_bool nft_user_set_counter     'config' 'nft_user_set_counter' '0'
	config_get      procd_boot_delay         'config' 'procd_boot_delay' '0'
	config_get      resolver_set             'config' 'resolver_set'
	config_get      rule_create_option       'config' 'rule_create_option' 'add'
	config_get_bool secure_reload            'config' 'secure_reload' '1'
	config_get_bool strict_enforcement       'config' 'strict_enforcement' '0'
	config_get      supported_interface      'config' 'supported_interface'
	config_get      verbosity                'config' 'verbosity' '2'
	config_get      wan_ip_rules_priority    'config' 'wan_ip_rules_priority' '30000'
	config_get      wan_mark                 'config' 'wan_mark' '010000'
	fw_mask="0x${fw_mask}"
	wan_mark="0x${wan_mark}"
	[ -n "$ipv6_enabled" ] && [ "$ipv6_enabled" -eq 0 ] && unset ipv6_enabled
	. /lib/functions/network.sh
	. /usr/share/libubox/jshn.sh
	mkdir -p "${dnsmasqFile%/*}"
	if is_nft; then
		fw_maskXor="$(printf '%#x' "$((fw_mask ^ 0xffffffff))")"
		fw_maskXor="${fw_maskXor:-0xff00ffff}"
		if [ "$nft_user_set_counter" -eq '0' ]; then
			unset nft_user_set_counter
		fi
	else
		case $rule_create_option in
			insert|-i|-I) rule_create_option='-I';;
			add|-a|-A|*) rule_create_option='-A';;
		esac
	fi
}

load_environment() {
	local param="$1" validation_result="$2"
	load_package_config

	if [ "$param" = 'on_start' ]; then
		if [ -n "$validation_result" ] && [ "$validation_result" != '0' ]; then
			output "${_ERROR_}: The $packageName config validation failed!\\n"
			output "Please check if the '$packageConfigFile' contains correct values for config options.\\n"
			state add 'errorSummary' 'errorConfigValidation'
			return 1
		fi
		if [ "$enabled" -eq 0 ]; then
			state add 'errorSummary' 'errorServiceDisabled'
			return 1
		fi
		if [ ! -x "$ip_full" ]; then
			state add 'errorSummary' 'errorNoIpFull'
			return 1
		fi
		if ! is_nft; then
			if [ -z "$iptables" ] || [ ! -x "$iptables" ]; then
				state add 'errorSummary' 'errorNoIptables'
				return 1
			fi
		fi
		resolver 'check_support'
	fi

	load_network "$param"
}

load_network() {
	config_load 'network'
	[ -z "$ifacesAll" ] && config_foreach _build_ifaces_all 'interface'
	[ -z "$ifacesSupported" ] && config_foreach _build_ifaces_supported 'interface'
	pbr_find_iface wanIface4 'wan'
	[ -n "$ipv6_enabled" ] && pbr_find_iface wanIface6 'wan6'
	[ -n "$wanIface4" ] && network_get_gateway wanGW4 "$wanIface4"
	[ -n "$wanIface6" ] && network_get_gateway6 wanGW6 "$wanIface6"
	wanGW="${wanGW4:-$wanGW6}"
}

is_wan_up() {
	local sleepCount='1'
	load_network
	while [ -z "$wanGW" ] ; do
		load_network
		if [ $((sleepCount)) -gt $((boot_timeout)) ] || [ -n "$wanGW" ]; then break; fi
		output "$serviceName waiting for wan gateway...\\n"
		sleep 1
		network_flush_cache
		sleepCount=$((sleepCount+1))
	done
	if [ -n "$wanGW" ]; then
		return 0
	else
		state add 'errorSummary' 'errorNoWanGateway'
		return 1
	fi
}

# shellcheck disable=SC2086
ipt4() {
	local d
	[ -x "$iptables" ] || return 1
	for d in "${*//-A/-D}" "${*//-I/-D}" "${*//-N/-F}" "${*//-N/-X}"; do 
		[ "$d" != "$*" ] && "$iptables" $d >/dev/null 2>&1
	done
	d="$*"; "$iptables" $d >/dev/null 2>&1
}

# shellcheck disable=SC2086
ipt6() {
	local d
	[ -n "$ipv6_enabled" ] || return 0
	[ -x "$ip6tables" ] || return 1
	for d in "${*//-A/-D}" "${*//-I/-D}" "${*//-N/-F}" "${*//-N/-X}"; do 
		[ "$d" != "$*" ] && "$ip6tables" $d >/dev/null 2>&1
	done
	d="$*"
	"$ip6tables" $d >/dev/null 2>&1
}

# shellcheck disable=SC2086
ipt() {
	local d failFlagIpv4=1 failFlagIpv6=1
	[ -x "$iptables" ] || return 1
	for d in "${*//-A/-D}" "${*//-I/-D}" "${*//-N/-F}" "${*//-N/-X}"; do 
		if [ "$d" != "$*" ]; then
			"$iptables" $d >/dev/null 2>&1
			[ -x "$ip6tables" ] && "$ip6tables" $d >/dev/null 2>&1
		fi
	done
	d="$*"; "$iptables" $d >/dev/null 2>&1 && failFlagIpv4=0;
	if [ -n "$ipv6_enabled" ] && [ -x "$ip6tables" ]; then
		"$ip6tables" $d >/dev/null 2>&1 && failFlagIpv6=0
	fi
	[ "$failFlagIpv4" -eq 0 ] || [ "$failFlagIpv6" -eq 0 ]
}

# shellcheck disable=SC2086
ips4() { [ -x "$ipset" ] && "$ipset" "$@" >/dev/null 2>&1; }
ips6() { [ -x "$ipset" ] && { if [ -n "$ipv6_enabled" ] && [ -n "$*" ]; then "$ipset" "$@" >/dev/null 2>&1; else return 1; fi; }; }
ips() {
	local command="$1" iface="$2" target="${3:-dst}" type="${4:-ip}" uid="$5" comment="$6" param="$7" mark="$7"
	local ipset4 ipset6 i
	local ipv4_error=1 ipv6_error=1
	ipset4="${ipsPrefix}${iface:+_$iface}_4${target:+_$target}${type:+_$type}${uid:+_$uid}"
	ipset6="${ipsPrefix}${iface:+_$iface}_6${target:+_$target}${type:+_$type}${uid:+_$uid}"

	[ -x "$ipset" ] || return 1

	if [ "${#ipset4}" -gt 31 ]; then 
		state add 'errorSummary' 'errorIpsetNameTooLong' "$ipset4"
		return 1
	fi

	case "$command" in
		add)
			ips4 -q -! add "$ipset4" comment "$comment" && ipv4_error=0
			ips6 -q -! add "$ipset6" comment "$comment" && ipv6_error=0
		;;
		add_agh_element)
			[ -n "$ipv6_enabled" ] || unset ipset6
			echo "${param}/${ipset4}${ipset6:+,$ipset6}" >> "$aghIpsetFile" && ipv4_error=0
		;;
		add_dnsmasq_element)
			[ -n "$ipv6_enabled" ] || unset ipset6
			echo "ipset=/${param}/${ipset4}${ipset6:+,$ipset6} # $comment" >> "$dnsmasqFile" && ipv4_error=0
		;;
		create)
			ips4 -q -! create "$ipset4" "hash:$type" comment && ipv4_error=0
			ips6 -q -! create "$ipset6" "hash:$type" comment family inet6 && ipv6_error=0
		;;
		create_agh_set)
			ips4 -q -! create "$ipset4" "hash:$type" comment && ipv4_error=0
			ips6 -q -! create "$ipset6" "hash:$type" comment family inet6 && ipv6_error=0
		;;
		create_dnsmasq_set)
			ips4 -q -! create "$ipset4" "hash:$type" comment && ipv4_error=0
			ips6 -q -! create "$ipset6" "hash:$type" comment family inet6 && ipv6_error=0
		;;
		create_user_set)
			case "$type" in
				ip|net)
					ips4 -q -! create "$ipset4" "hash:$type" comment && ipv4_error=0
					ips6 -q -! create "$ipset6" "hash:$type" comment family inet6 && ipv6_error=0
					case "$target" in
						dst)
							ipt4 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" dst -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
							ipt6 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" dst -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
						;;
						src)
							ipt4 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" src -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
							ipt6 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" src -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
					;;
					esac
				;;
				mac)
					ips4 -q -! create "$ipset4" "hash:$type" comment && ipv4_error=0
					ips6 -q -! create "$ipset6" "hash:$type" comment family inet6 && ipv4_error=0
					ipt4 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" src -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
					ipt6 -t mangle -A "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" src -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
				;;
				esac
		;;
		delete|destroy)
			ips4 -q -! destroy "$ipset4" && ipv4_error=0
			ips6 -q -! destroy "$ipset6" && ipv6_error=0
		;;
		delete_user_set)
			ips4 -q -! destroy "$ipset4" && ipv4_error=0
			ips6 -q -! destroy "$ipset6" family inet6 && ipv6_error=0
			case "$type" in
				ip|net)
					case "$target" in
						dst)
							ipt4 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" dst -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
							ipt6 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" dst -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
						;;
						src)
							ipt4 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" src -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
							ipt6 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" src -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
					;;
					esac
				;;
				mac)
					ipt4 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset4" src -g "${iptPrefix}_MARK_${mark}" && ipv4_error=0
					ipt6 -t mangle -D "${iptPrefix}_PREROUTING" -m set --match-set "$ipset6" src -g "${iptPrefix}_MARK_${mark}" && ipv6_error=0
				;;
				esac
		;;
		flush|flush_user_set)
			ips4 -q -! flush "$ipset4" && ipv4_error=0
			ips6 -q -! flush "$ipset6" && ipv6_error=0
		;;
	esac
	if [ "$ipv4_error" -eq '0' ] || [ "$ipv6_error" -eq '0' ]; then
		return 0
	else
		return 1
	fi
}

# atomic
#nfta() { echo "$@" >> "$nftTempFile"; }
#nfta4() { echo "$@" >> "$nftTempFile"; }
#nfta6() { [ -z "$ipv6_enabled" ] || echo "$@" >> "$nftTempFile"; }
#nft() { nfta "$@"; [ -x "$nft" ] && "$nft" "$@" >/dev/null 2>&1; }
#nft4() { nfta "$@"; [ -x "$nft" ] && "$nft" "$@" >/dev/null 2>&1; }
#nft6() { nfta "$@"; [ -n "$ipv6_enabled" ] || return 0; [ -x "$nft" ] && [ -n "$*" ] && "$nft" "$@" >/dev/null 2>&1; }
nft() { [ -x "$nft" ] && "$nft" "$@" >/dev/null 2>&1; }
nft4() { [ -x "$nft" ] && "$nft" "$@" >/dev/null 2>&1; }
nft6() { [ -n "$ipv6_enabled" ] || return 0; [ -x "$nft" ] && [ -n "$*" ] && "$nft" "$@" >/dev/null 2>&1; }
nftset() {
	local command="$1" iface="$2" target="${3:-dst}" type="${4:-ip}" uid="$5" comment="$6" param="$7" mark="$7"
	local nftset4 nftset6 i param4 param6
	local ipv4_error=1 ipv6_error=1
	nftset4="${nftPrefix}${iface:+_$iface}_4${target:+_$target}${type:+_$type}${uid:+_$uid}"
	nftset6="${nftPrefix}${iface:+_$iface}_6${target:+_$target}${type:+_$type}${uid:+_$uid}"

	[ -x "$nft" ] || return 1

	if [ "${#nftset4}" -gt 255 ]; then 
		state add 'errorSummary' 'errorNftsetNameTooLong' "$nftset4"
		return 1
	fi

	case "$command" in
		add)
			if is_netmask "$param" || is_ipv4 "$param" || is_ipv6 "$param" \
				|| is_mac_address "$param" || is_list "$param"; then
				nft4 add element inet "$nftTable" "$nftset4" "{ $param }" && ipv4_error=0
				nft6 add element inet "$nftTable" "$nftset6" "{ $param }" && ipv6_error=0
			else
				if [ "$target" = 'src' ]; then
					param4="$(ipv4_leases_to_nftset "$param")"
					param6="$(ipv6_leases_to_nftset "$param")"
				fi
				[ -z "$param4" ] &&	param4="$(resolveip_to_nftset4 "$param")"
				[ -z "$param6" ] &&	param6="$(resolveip_to_nftset6 "$param")"
				if [ -z "$param4" ] &&	[ -z "$param6" ]; then
					state add 'errorSummary' 'errorFailedToResolve' "$param"
				else
					nft4 add element inet "$nftTable" "$nftset4" "{ $param4 }" && ipv4_error=0
					nft6 add element inet "$nftTable" "$nftset6" "{ $param6 }" && ipv6_error=0
				fi
			fi
		;;
		add_dnsmasq_element)
			[ -n "$ipv6_enabled" ] || unset nftset6
			echo "nftset=/${param}/4#inet#${nftTable}#${nftset4}${nftset6:+,6#inet#${nftTable}#$nftset6} # $comment" >> "$dnsmasqFile" && ipv4_error=0
		;;
		create)
			case "$type" in
				ip|net)
					nft4 add set inet "$nftTable" "$nftset4" "{ type ipv4_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv4_error=0
					nft6 add set inet "$nftTable" "$nftset6" "{ type ipv6_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv6_error=0
					;;
				mac)
					nft4 add set inet "$nftTable" "$nftset4" "{ type ether_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv4_error=0
					nft6 add set inet "$nftTable" "$nftset6" "{ type ether_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv6_error=0
					;;
				esac
		;;
		create_dnsmasq_set)
			nft4 add set inet "$nftTable" "$nftset4" "{ type ipv4_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv4_error=0
			nft6 add set inet "$nftTable" "$nftset6" "{ type ipv6_addr; counter; flags interval; auto-merge; comment \"$comment\"; }" && ipv6_error=0
		;;
		create_user_set)
			case "$type" in
				ip|net)
					nft4 add set inet "$nftTable" "$nftset4" "{ type ipv4_addr; ${nft_user_set_counter:+counter;} flags interval; auto-merge; policy $nft_user_set_policy; comment \"$comment\"; }" && ipv4_error=0
					nft6 add set inet "$nftTable" "$nftset6" "{ type ipv6_addr; ${nft_user_set_counter:+counter;} flags interval; auto-merge; policy $nft_user_set_policy; comment \"$comment\"; }" && ipv6_error=0
					case "$target" in
						dst)
							nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ip daddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
							nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ip daddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
						;;
						src)
							nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ip saddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
							nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ip saddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
						;;
					esac
					;;
				mac)
					nft4 add set inet "$nftTable" "$nftset4" "{ type ether_addr; ${nft_user_set_counter:+counter;} flags interval; auto-merge; policy $nft_user_set_policy; comment \"$comment\"; }" && ipv4_error=0
					nft6 add set inet "$nftTable" "$nftset6" "{ type ether_addr; ${nft_user_set_counter:+counter;} flags interval; auto-merge; policy $nft_user_set_policy; comment \"$comment\"; }" && ipv6_error=0
					nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ether saddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
					nft add rule inet "$nftTable" "${nftPrefix}_prerouting" ether saddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
					;;
				esac
		;;
		delete|destroy)
			nft delete set inet "$nftTable" "$nftset4" && ipv4_error=0
			nft delete set inet "$nftTable" "$nftset6" && ipv6_error=0
		;;
		delete_user_set)
			nft delete set inet "$nftTable" "$nftset4" && ipv4_error=0
			nft delete set inet "$nftTable" "$nftset6" && ipv6_error=0
			case "$type" in
				ip|net)
					case "$target" in
						dst)
							nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ip daddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
							nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ip daddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
						;;
						src)
							nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ip saddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
							nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ip saddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
						;;
					esac
					;;
				mac)
					nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ether saddr "@${nftset4}" goto "${nftPrefix}_mark_${mark}" && ipv4_error=0
					nft delete rule inet "$nftTable" "${nftPrefix}_prerouting" ether saddr "@${nftset6}" goto "${nftPrefix}_mark_${mark}" && ipv6_error=0
					;;
				esac
		;;
		flush|flush_user_set)
			nft flush set inet "$nftTable" "$nftset4" && ipv4_error=0
			nft flush set inet "$nftTable" "$nftset6" && ipv6_error=0
		;;
	esac
# nft6 returns true if IPv6 support is not enabled
	[ -z "$ipv6_enabled" ] && ipv6_error='1'
	if [ "$ipv4_error" -eq '0' ] || [ "$ipv6_error" -eq '0' ]; then
		return 0
	else
		return 1
	fi
}

cleanup_rt_tables() { sed -i '/pbr_/d' '/etc/iproute2/rt_tables'; sync; }
cleanup_dnsmasq() { [ -s "$dnsmasqFile" ] && resolverStoredHash="$(md5sum $dnsmasqFile | awk '{ print $1; }')" && rm "$dnsmasqFile" >/dev/null 2>&1; }

cleanup_main_chains() {
	local i
	for i in $chainsList; do
		i="$(str_to_lower "$i")"
		nft flush chain inet "$nftTable" "${nftPrefix}_${i}"
	done
	for i in $chainsList; do
		i="$(str_to_upper "$i")"
		ipt -t mangle -D "${i}" -m mark --mark "0x0/${fw_mask}" -j "${iptPrefix}_${i}"
		ipt -t mangle -F "${iptPrefix}_${i}"
		ipt -t mangle -X "${iptPrefix}_${i}"
	done
}

cleanup_marking_chains() {
	local i
	for i in $(get_mark_nft_chains); do
		nft flush chain inet "$nftTable" "$i"
		nft delete chain inet "$nftTable" "$i"
	done
	for i in $(get_mark_ipt_chains); do
		ipt -t mangle -F "$i"
		ipt -t mangle -X "$i"
	done
}

cleanup_sets() {
	local i
	for i in $(get_nft_sets); do
		nft flush set inet "$nftTable" "$i"
		nft delete set inet "$nftTable" "$i"
	done
	for i in $(get_ipsets); do
		ipset -q -! flush "$i" >/dev/null 2>&1
		ipset -q -! destroy "$i" >/dev/null 2>&1
	done
}

state() {
	local action="$1" param="$2" value="${3//#/_}"
	shift 3
# shellcheck disable=SC2124
	local extras="$@"
	local line error_id error_extra label
	case "$action" in
		add)
			line="$(eval echo "\$$param")"
			eval "$param"='${line:+$line#}${value}${extras:+ $extras}'
		;;
		json)
			case "$param" in
				errorSummary)
					json_add_array 'errors';;
				warningSummary)
					json_add_array 'warnings';;
			esac
			if [ -n "$(eval echo "\$$param")" ]; then
				while read -r line; do
					if str_contains "$line" ' '; then
						error_id="${line% *}"
						error_extra="${line#* }"
					else
						error_id="$line"
					fi
					json_add_object
					json_add_string 'id' "$error_id"
					json_add_string 'extra' "$error_extra"
					json_close_object
				done <<EOF
$(eval echo "\$$param" | tr \# \\n)
EOF
			fi
			json_close_array
		;;
		print)
			[ -z "$(eval echo "\$$param")" ] && return 0
			case "$param" in
				errorSummary)
					label="${_ERROR_}:";;
				warningSummary)
					label="${_WARNING_}:";;
			esac
				while read -r line; do
					if str_contains "$line" ' '; then
						error_id="${line% *}"
						error_extra="${line#* }"
						printf "%b $(get_text "$error_id")\\n" "$label" "$error_extra"
					else
						error_id="$line"
						printf "%b $(get_text "$error_id")\\n" "$label"
					fi
				done <<EOF
$(eval echo "\$$param" | tr \# \\n)
EOF
		;;
		set)
			eval "$param"='${value}${extras:+ $extras}'
		;;
	esac
}

resolver() {
	local agh_version
	local param="$1"
	shift

	if [ "$param" = 'cleanup_all' ]; then
		sed -i "/ipset_file: ${aghIpsetFile}/d" "$aghConfigFile" >/dev/null 2>&1
		rm -f "$aghIpsetFile"
		rm -f "$dnsmasqFile"
		return 0
	fi

	case "$resolver_set" in
		''|none)
			case "$param" in
				add_resolver_element) return 1;;
				create_resolver_set) return 1;;
				check_support) return 0;;
				cleanup) return 0;;
				configure) return 0;;
				init) return 0;;
				init_end) return 0;;
				kill) return 0;;
				reload) return 0;;
				restart) return 0;;
				compare_hash) return 0;;
				store_hash) return 0;;
			esac
		;;
		adguardhome.ipset)
			case "$param" in
				add_resolver_element)
					[ -n "$resolver_set_supported" ] && ips 'add_agh_element' "$@";;
				create_resolver_set)
					[ -n "$resolver_set_supported" ] && ips 'create_agh_set' "$@";;
				check_support)
					if [ ! -x "$ipset" ]; then
						state add 'errorSummary' 'errorNoIpset'
						return 1
					fi
					if [ -n "$agh" ] && [ -s "$aghConfigFile" ]; then
						agh_version="$($agh --version | sed 's|AdGuard Home, version v\(.*\)|\1|')"
						if is_greater_or_equal "$agh_version" '0.107.13'; then
							resolver_set_supported='true'
							return 0
						else
							state add 'warningSummary' 'warningAGHVersionTooLow' "$agh_version"
							return 1
						fi
					else
						state add 'warningSummary' 'warningResolverNotSupported'
						return 1
					fi
				;;
				cleanup)
					[ -z "$resolver_set_supported" ] && return 0
					rm -f "$aghIpsetFile"
					sed -i "/ipset_file: ${aghIpsetFile}/d" "$aghConfigFile" >/dev/null 2>&1
					;;
				configure)
					[ -z "$resolver_set_supported" ] && return 1
					mkdir -p "${aghIpsetFile%/*}"
					touch "$aghIpsetFile"
					sed -i '/ipset_file/d' "$aghConfigFile" >/dev/null 2>&1
					sed -i "/  ipset:/a \ \ ipset_file: $aghIpsetFile" "$aghConfigFile"
				;;
				init) :;;
				init_end) :;;
				kill)
					[ -n "$resolver_set_supported" ] && [ -n "$agh" ] && killall -q -s HUP "$agh";;
				reload)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Reloading adguardhome '
					if /etc/init.d/adguardhome reload >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				restart)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Restarting adguardhome '
					if /etc/init.d/adguardhome restart >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				compare_hash)
					[ -z "$resolver_set_supported" ] && return 1
					local resolverNewHash
					if [ -s "$aghIpsetFile" ]; then
						resolverNewHash="$(md5sum $aghIpsetFile | awk '{ print $1; }')"
					fi
					[ "$resolverNewHash" != "$resolverStoredHash" ]
				;;
				store_hash)
					[ -s "$aghIpsetFile" ] && resolverStoredHash="$(md5sum $aghIpsetFile | awk '{ print $1; }')";;
			esac
		;;
		dnsmasq.ipset)
			case "$param" in
				add_resolver_element)
					[ -n "$resolver_set_supported" ] && ips 'add_dnsmasq_element' "$@";;
				create_resolver_set)
					[ -n "$resolver_set_supported" ] && ips 'create_dnsmasq_set' "$@";;
				check_support)
					if [ ! -x "$ipset" ]; then
						state add 'errorSummary' 'errorNoIpset'
						return 1
					fi
					if ! dnsmasq -v 2>/dev/null | grep -q 'no-ipset' && dnsmasq -v 2>/dev/null | grep -q 'ipset'; then
						resolver_set_supported='true'
						return 0
					else
						state add 'warningSummary' 'warningResolverNotSupported'
						return 1
					fi
				;;
				cleanup)
					[ -n "$resolver_set_supported" ] && rm -f "$dnsmasqFile";;
				configure)
					[ -n "$resolver_set_supported" ] && mkdir -p "${dnsmasqFile%/*}";;
				init) :;;
				init_end) :;;
				kill)
					[ -n "$resolver_set_supported" ] && killall -q -s HUP dnsmasq;;
				reload)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Reloading dnsmasq '
					if /etc/init.d/dnsmasq reload >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				restart)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Restarting dnsmasq '
					if /etc/init.d/dnsmasq restart >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				compare_hash)
					[ -z "$resolver_set_supported" ] && return 1
					local resolverNewHash
					if [ -s "$dnsmasqFile" ]; then
						resolverNewHash="$(md5sum $dnsmasqFile | awk '{ print $1; }')"
					fi
					[ "$resolverNewHash" != "$resolverStoredHash" ]
				;;
				store_hash)
					[ -s "$dnsmasqFile" ] && resolverStoredHash="$(md5sum $dnsmasqFile | awk '{ print $1; }')";;
			esac
		;;
		dnsmasq.nftset)
			case "$param" in
				add_resolver_element)
					[ -n "$resolver_set_supported" ] && nftset 'add_dnsmasq_element' "$@";;
				create_resolver_set)
					[ -n "$resolver_set_supported" ] && nftset 'create_dnsmasq_set' "$@";;
				check_support)
					if [ ! -x "$nft" ]; then
						state add 'errorSummary' 'errorNoNft'
						return 1
					fi
					if ! dnsmasq -v 2>/dev/null | grep -q 'no-nftset' && dnsmasq -v 2>/dev/null | grep -q 'nftset'; then
						resolver_set_supported='true'
						return 0
					else
						state add 'warningSummary' 'warningResolverNotSupported'
						return 1
					fi
				;;
				cleanup)
					[ -n "$resolver_set_supported" ] && rm -f "$dnsmasqFile";;
				configure)
					[ -n "$resolver_set_supported" ] && mkdir -p "${dnsmasqFile%/*}";;
				init) :;;
				init_end) :;;
				kill)
					[ -n "$resolver_set_supported" ] && killall -q -s HUP dnsmasq;;
				reload)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Reloading dnsmasq '
					if /etc/init.d/dnsmasq reload >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				restart)
					[ -z "$resolver_set_supported" ] && return 1
					output 3 'Restarting dnsmasq '
					if /etc/init.d/dnsmasq restart >/dev/null 2>&1; then
						output_okn
						return 0
					else
						output_failn
						return 1
					fi
				;;
				compare_hash)
					[ -z "$resolver_set_supported" ] && return 1
					local resolverNewHash
					if [ -s "$dnsmasqFile" ]; then
						resolverNewHash="$(md5sum $dnsmasqFile | awk '{ print $1; }')"
					fi
					[ "$resolverNewHash" != "$resolverStoredHash" ]
				;;
				store_hash)
					[ -s "$dnsmasqFile" ] && resolverStoredHash="$(md5sum $dnsmasqFile | awk '{ print $1; }')";;
			esac
		;;
		unbound.ipset)
			case "$param" in
				add_resolver_element) :;;
				create_resolver_set) :;;
				check_support) :;;
				cleanup) :;;
				configure) :;;
				init) :;;
				init_end) :;;
				kill) :;;
				reload) :;;
				restart) :;;
				compare_hash) :;;
				store_hash) :;;
			esac
		;;
		unbound.nftset)
			case "$param" in
				add_resolver_element) :;;
				create_resolver_set) :;;
				check_support) :;;
				cleanup) :;;
				configure) :;;
				init) :;;
				init_end) :;;
				kill) :;;
				reload) :;;
				restart) :;;
				compare_hash) :;;
				store_hash) :;;
			esac
		;;
	esac
}

trap_process() {
	output "\\n"
	output "Unexpected exit or service termination: '${1}'!\\n"
	state add 'errorSummary' 'errorUnexpectedExit' "$1"
	traffic_killswitch 'remove'
}

traffic_killswitch() {
	local s=0
	case "$1" in
		insert)
			local lan_subnet wan_device
			[ "$secure_reload" -ne 0 ] || return 0
			for i in $serviceTrapSignals; do
# shellcheck disable=SC2064
				trap "trap_process $i" "$i"
			done
			output 3 'Activating traffic killswitch '
			network_get_subnet lan_subnet 'lan'
			network_get_physdev wan_device 'wan'
			if is_nft; then
				nft add chain inet "$nftTable" "${nftPrefix}_killswitch" '{ type filter hook forward priority 0; policy accept; }' || s=1
				nft add rule inet "$nftTable" "${nftPrefix}_killswitch" oifname "$wan_device" ip saddr "$lan_subnet" counter reject || s=1
			else
				ipt -N "${iptPrefix}_KILLSWITCH" || s=1
				ipt -A "${iptPrefix}_KILLSWITCH" -s "$lan_subnet" -o "$wan_device" -j REJECT || s=1
				ipt -I FORWARD -j "${iptPrefix}_KILLSWITCH" || s=1
			fi
			if [ "$s" -eq 0 ]; then
				output_okn
			else
				output_failn
			fi
		;;
		remove)
			if [ "$secure_reload" -ne 0 ]; then
				output 3 'Deactivating traffic killswitch '
			fi
			if is_nft; then
				nft flush chain inet "$nftTable" "${nftPrefix}_killswitch" || s=1
				nft delete chain inet "$nftTable" "${nftPrefix}_killswitch" || s=1
			else
				ipt -D FORWARD -j "${iptPrefix}_KILLSWITCH" || s=1
				ipt -F "${iptPrefix}_KILLSWITCH" || s=1
				ipt -X "${iptPrefix}_KILLSWITCH" || s=1
			fi
			if [ "$secure_reload" -ne 0 ]; then
				if [ "$s" -eq 0 ]; then
					output_okn
				else
					output_failn
				fi
			fi
# shellcheck disable=SC2086
			trap - $serviceTrapSignals
		;;
	esac
}

policy_routing_tor() { if is_nft; then policy_routing_tor_nft "$@"; else policy_routing_tor_iptables "$@"; fi; }
policy_routing_tor_iptables() {
	local comment="$1" iface="$2" src_addr="$3" src_port="$4" dest_addr="$5" dest_port="$6" proto chain uid="$9"
	proto="$(str_to_lower "$7")"
	chain="$(str_to_upper "$8")"
	chain="${chain:-PREROUTING}"
	if [ -n "${src_addr}${src_port}${dest_port}" ]; then
		state add 'warningSummary' 'warningTorUnsetParams' "$comment"
	fi
	if [ -n "$proto" ] && [ "$proto" != "all" ]; then
		state add 'warningSummary' 'warningTorUnsetProto' "$comment"
	fi
	if [ "$chain" != "PREROUTING" ]; then
		state add 'warningSummary' 'warningTorUnsetChainIpt' "$comment"
	fi
	if ! resolver 'add_resolver_element' "$iface" 'dst' 'ip' '' "${comment}: $dest_addr" "$dest_addr"; then
		processPolicyError='true'
		state add 'errorSummary' 'errorResolver' "'add_resolver_element' '$iface' 'dst' 'ip' '${comment}: $dest_addr' '$dest_addr'"
		return 1
	fi
	return 0
}
policy_routing_tor_nft() {
	local comment="$1" iface="$2" src_addr="$3" src_port="$4" dest_addr="$5" dest_port="$6" proto chain uid="$9"
	proto="$(str_to_lower "$7")"
	chain="$(str_to_lower "$8")"
	chain="${chain:-prerouting}"
	if [ -n "${src_addr}${src_port}${dest_port}" ]; then
		state add 'warningSummary' 'warningTorUnsetParams' "$comment"
	fi
	if [ -n "$proto" ] && [ "$proto" != "all" ]; then
		state add 'warningSummary' 'warningTorUnsetProto' "$comment"
	fi
	if [ "$chain" != "prerouting" ]; then
		state add 'warningSummary' 'warningTorUnsetChainNft' "$comment"
	fi
	if ! resolver 'add_resolver_element' "$iface" 'dst' 'ip' '' "${comment}: $dest_addr" "$dest_addr"; then
		processPolicyError='true'
		state add 'errorSummary' 'errorResolver' "'add_resolver_element' '$iface' 'dst' 'ip' '${comment}: $dest_addr' '$dest_addr'"
		return 1
	fi
	return 0
}

policy_routing() { if is_nft; then policy_routing_nft "$@"; else policy_routing_iptables "$@"; fi; }
policy_routing_iptables() {
	local mark param4 param6 i negation value dest ipInsertOption="-A"
	local ip4error='1' ip6error='1'
	local name="$1" iface="$2" laddr="$3" lport="$4" raddr="$5" rport="$6" proto chain uid="$9"
	proto="$(str_to_lower "$7")"
	chain="$(str_to_upper "$8")"
	chain="${chain:-PREROUTING}"
	mark=$(eval echo "\$mark_${iface//-/_}")

	if [ -n "$ipv6_enabled" ] && { is_ipv6 "$laddr" || is_ipv6 "$raddr"; }; then
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessNoIpv6' "$name"
		return 1
	fi

	if [ -n "$mark" ]; then
		dest="-g ${iptPrefix}_MARK_${mark}"
	elif [ "$iface" = "ignore" ]; then
		dest="-j RETURN"
	else
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessUnknownFwmark' "$iface"
		return 1
	fi

	if [ -z "$proto" ]; then
		if [ -n "$lport" ] || [ -n "$rport" ]; then 
			proto='tcp udp'
		else
			proto='all'
		fi
	fi

	if is_family_mismatch "$laddr" "$raddr"; then 
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessMismatchFamily' "${name}: '$laddr' '$raddr'"
		return 1
	fi

	for i in $proto; do
		if [ "$i" = 'all' ]; then
			param4="-t mangle ${ipInsertOption} ${iptPrefix}_${chain} $dest"
			param6="-t mangle ${ipInsertOption} ${iptPrefix}_${chain} $dest"
		elif ! is_supported_protocol "$i"; then
			processPolicyError='true'
			state add 'errorSummary' 'errorPolicyProcessUnknownProtocol' "${name}: '$i'"
			return 1
		else
			param4="-t mangle ${ipInsertOption} ${iptPrefix}_${chain} $dest -p $i"
			param6="-t mangle ${ipInsertOption} ${iptPrefix}_${chain} $dest -p $i"
		fi

		if [ -n "$laddr" ]; then
			if [ "${laddr:0:1}" = "!" ]; then
				negation='!'; value="${laddr:1}"
			else
				unset negation; value="$laddr";
			fi
			if is_phys_dev "$value"; then
				param4="$param4 $negation -m physdev --physdev-in ${value:1}"
				param6="$param6 $negation -m physdev --physdev-in ${value:1}"
			elif is_netmask "$value"; then
				local target='src' type='net'
				if ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $laddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $laddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					param4="$param4 $negation -s $value"
					param6="$param6 $negation -s $value"
				fi
			elif is_mac_address "$value"; then
				local target='src' type='mac'
				if ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $laddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $laddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					param4="$param4 -m mac $negation --mac-source $value"
					param6="$param6 -m mac $negation --mac-source $value"
				fi
			else
				local target='src' type='ip'
				if ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $laddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $laddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					local resolvedIP4 resolvedIP6
					resolvedIP4="$(resolveip_to_ipt4 "$value")"
					resolvedIP6="$(resolveip_to_ipt6 "$value")"
					if [ -z "$resolvedIP4" ] && [ -z "$resolvedIP6" ]; then
						state add 'errorSummary' 'errorFailedToResolve' "$value"
					fi
					param4="$param4 $negation -s $resolvedIP4"
					param6="$param6 $negation -s $resolvedIP6"
				fi
			fi
		fi

		if [ -n "$lport" ]; then
			if [ "${lport:0:1}" = "!" ]; then
				negation='!'; value="${lport:1}"
			else
				unset negation; value="$lport";
			fi
			param4="$param4 -m multiport $negation --sport ${value//-/:}"
			param6="$param6 -m multiport $negation --sport ${value//-/:}"
		fi

		if [ -n "$raddr" ]; then 
			if [ "${raddr:0:1}" = "!" ]; then
				negation='!'; value="${raddr:1}"
			else
				unset negation; value="$raddr";
			fi
			if is_netmask "$value"; then
				local target='dst' type='net'
				if ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $raddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $raddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					param4="$param4 $negation -d $value"
					param6="$param6 $negation -d $value"
				fi
			elif is_domain "$value"; then
				local target='dst' type='ip'
				if resolver 'create_resolver_set' "$iface" "$target" "$type" "$uid" "${name}: $raddr" && \
					resolver 'add_resolver_element' "$iface" "$target" "$type" "$uid" "${name}: $raddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				elif ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $raddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $raddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					local resolvedIP4 resolvedIP6
					resolvedIP4="$(resolveip_to_ipt4 "$value")"
					resolvedIP6="$(resolveip_to_ipt6 "$value")"
					if [ -z "$resolvedIP4" ] && [ -z "$resolvedIP6" ]; then
						state add 'errorSummary' 'errorFailedToResolve' "$value"
					fi
					param4="$param4 $negation -d $resolvedIP4"
					param6="$param6 $negation -d $resolvedIP6"
				fi
			else
				local target='dst' type='ip'
				if ips 'create' "$iface" "$target" "$type" "$uid" "${name}: $raddr" && \
					ips 'add' "$iface" "$target" "$type" "$uid" "${name}: $raddr" "$value"; then
					param4="$param4 -m set $negation --match-set ${ipsPrefix}_${iface}_4_${target}_${type}_${uid} $target"
					param6="$param6 -m set $negation --match-set ${ipsPrefix}_${iface}_6_${target}_${type}_${uid} $target"
				else
					param4="$param4 $negation -d $value"
					param6="$param6 $negation -d $value"
				fi
			fi
		fi

		if [ -n "$rport" ]; then
			if [ "${rport:0:1}" = "!" ]; then
				negation='!'; value="${rport:1}"
			else
				unset negation; value="$rport";
			fi
			param4="$param4 -m multiport $negation --dport ${value//-/:}"
			param6="$param6 -m multiport $negation --dport ${value//-/:}"
		fi

		if [ -n "$name" ]; then
			param4="$param4 -m comment --comment $(str_extras_to_underscore "$name")"
			param6="$param6 -m comment --comment $(str_extras_to_underscore "$name")"
		fi

		local ipv4_error='0' ipv6_error='0'
		if [ "$param4" = "$param6" ]; then
			ipt4 "$param4" || ipv4_error='1'
		else
			ipt4 "$param4" || ipv4_error='1'
			ipt6 "$param6" || ipv6_error='1'
		fi

# ipt6 returns true if IPv6 support is not enabled
	[ -z "$ipv6_enabled" ] && ipv6_error='1'
	if [ "$ipv4_error" -eq '1' ] && [ "$ipv6_error" -eq '1' ]; then
		if [ -n "$ipv6_enabled" ]; then
			processPolicyError='true'
			state add 'errorSummary' 'errorPolicyProcessInsertionFailed' "$name"
			state add 'errorSummary' 'errorPolicyProcessCMD' "iptables $param4"
			state add 'errorSummary' 'errorPolicyProcessCMD' "iptables $param6"
		else
			processPolicyError='true'
			state add 'errorSummary' 'errorPolicyProcessInsertionFailedIpv4' "$name"
			state add 'errorSummary' 'errorPolicyProcessCMD' "iptables $param4"
		fi
	fi

	done
}
policy_routing_nft() {
	local mark param4 param6 i negation value dest nftInsertOption='add'
	local ip4Flag='ip' ip6Flag='ip6'
	local name="$1" iface="$2" laddr="$3" lport="$4" raddr="$5" rport="$6" proto chain uid="$9"
	proto="$(str_to_lower "$7")"
	chain="$(str_to_lower "$8")"
	chain="${chain:-prerouting}"
	mark=$(eval echo "\$mark_${iface//-/_}")

	if [ -z "$ipv6_enabled" ] && { is_ipv6 "$src_addr" || is_ipv6 "$dest_addr"; }; then
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessNoIpv6' "$name"
		return 1
	fi

	if [ -n "$mark" ]; then
		dest="goto ${nftPrefix}_mark_${mark}"
	elif [ "$iface" = "ignore" ]; then
		dest="return"
	else
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessUnknownFwmark' "$iface"
		return 1
	fi

	if is_family_mismatch "$src_addr" "$dest_addr"; then 
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessMismatchFamily' "${name}: '$laddr' '$raddr'"
		return 1
	fi

	if [ -n "$proto" ] && ! is_supported_protocol "$proto"; then
		processPolicyError='true'
		state add 'errorSummary' 'errorPolicyProcessUnknownProtocol' "${name}: '$i'"
		return 1
	fi

	if [ -n "$src_addr" ]; then
		if [ "${src_addr:0:1}" = "!" ]; then
			negation='!='; value="${src_addr:1}"
		else
			unset negation; value="$src_addr";
		fi
		if is_phys_dev "$value"; then
			param4="$param4 iifname $negation ${value:1}"
			param6="$param6 iifname $negation ${value:1}"
		elif is_mac_address "$value"; then
			local target='src' type='mac'
			if nftset 'create' "$iface" "$target" "$type" "$uid" "$name" && \
				nftset 'add' "$iface" "$target" "$type" "$uid" "$name" "$value"; then
				param4="$param4 ether saddr $negation @${nftPrefix}_${iface}_4_${target}_${type}_${uid}"
				param6="$param6 ether saddr $negation @${nftPrefix}_${iface}_6_${target}_${type}_${uid}"
			else
				param4="$param4 ether saddr $negation $value"
				param6="$param6 ether saddr $negation $value"
			fi
		else
			local target='src' type='ip'
			if nftset 'create' "$iface" "$target" "$type" "$uid" "$name" && \
				nftset 'add' "$iface" "$target" "$type" "$uid" "$name" "$value"; then
				param4="$param4 $ip4Flag saddr $negation @${nftPrefix}_${iface}_4_${target}_${type}_${uid}"
				param6="$param6 $ip6Flag saddr $negation @${nftPrefix}_${iface}_6_${target}_${type}_${uid}"
			else
				param4="$param4 $ip4Flag saddr $negation $value"
				param6="$param6 $ip6Flag saddr $negation $value"
			fi
		fi
	fi

	if [ -n "$dest_addr" ]; then 
		if [ "${dest_addr:0:1}" = "!" ]; then
			negation='!='; value="${dest_addr:1}"
		else
			unset negation; value="$dest_addr";
		fi
		if is_phys_dev "$value"; then
			param4="$param4 oifname $negation ${value:1}"
			param6="$param6 oifname $negation ${value:1}"
		elif is_domain "$value"; then
			local target='dst' type='ip'
			if resolver 'create_resolver_set' "$iface" "$target" "$type" "$uid" "$name" && \
				resolver 'add_resolver_element' "$iface" "$target" "$type" "$uid" "$name" "$value"; then
				param4="$param4 $ip4Flag daddr $negation @${nftPrefix}_${iface}_4_${target}_${type}_${uid}"
				param6="$param6 $ip6Flag daddr $negation @${nftPrefix}_${iface}_6_${target}_${type}_${uid}"
			elif nftset 'create' "$iface" "$target" "$type" "$uid" "$name" && \
				nftset 'add' "$iface" "$target" "$type" "$uid" "$name" "$value"; then
				param4="$param4 $ip4Flag daddr $negation @${nftPrefix}_${iface}_4_${target}_${type}_${uid}"
				param6="$param6 $ip6Flag daddr $negation @${nftPrefix}_${iface}_6_${target}_${type}_${uid}"
			else
				local resolvedIP4 resolvedIP6
				resolvedIP4="$(resolveip_to_nftset4 "$value")"
				resolvedIP6="$(resolveip_to_nftset6 "$value")"
				if [ -z "$resolvedIP4" ] && [ -z "$resolvedIP6" ]; then
					state add 'errorSummary' 'errorFailedToResolve' "$value"
				fi
				param4="$param4 $ip4Flag daddr $negation { $resolvedIP4 }"
				param6="$param6 $ip6Flag daddr $negation { $resolvedIP6 }"
			fi
		else
			local target='dst' type='ip'
			if nftset 'create' "$iface" "$target" "$type" "$uid" "$name" && \
				nftset 'add' "$iface" "$target" "$type" "$uid" "$name" "$value"; then
				param4="$param4 $ip4Flag daddr $negation @${nftPrefix}_${iface}_4_${target}_${type}_${uid}"
				param6="$param6 $ip6Flag daddr $negation @${nftPrefix}_${iface}_6_${target}_${type}_${uid}"
			else
				param4="$param4 $ip4Flag daddr $negation $value"
				param6="$param6 $ip6Flag daddr $negation $value"
			fi
		fi
	fi

	if [ -n "${src_port}${dest_port}" ]; then
		proto="${proto:-tcp}"
	fi

	if [ -n "$src_port" ]; then
		if [ "${src_port:0:1}" = "!" ]; then
			negation='!='; value="${src_port:1}"
		else
			unset negation; value="$src_port";
		fi
		param4="$param4 ${proto:+$proto }sport $negation {$(ports_to_nftset "$value")}"
		param6="$param6 ${proto:+$proto }sport $negation {$(ports_to_nftset "$value")}"
	fi

	if [ -n "$dest_port" ]; then
		if [ "${dest_port:0:1}" = "!" ]; then
			negation='!='; value="${dest_port:1}"
		else
			unset negation; value="$dest_port";
		fi
		param4="$param4 ${proto:+$proto }dport $negation {$(ports_to_nftset "$value")}"
		param6="$param6 ${proto:+$proto }dport $negation {$(ports_to_nftset "$value")}"
	fi

	param4="$nftInsertOption rule inet $nftTable ${nftPrefix}_${chain} $param4 $dest comment \"$name\""
	param6="$nftInsertOption rule inet $nftTable ${nftPrefix}_${chain} $param6 $dest comment \"$name\""

	local ipv4_error='0' ipv6_error='0'
	if [ "$nftPrevParam4" != "$param4" ]; then
		nft4 "$param4" || ipv4_error='1'
		nftPrevParam4="$param4"
	fi
	if [ "$nftPrevParam6" != "$param6" ]; then
		nft6 "$param6" || ipv6_error='1'
		nftPrevParam6="$param6"
	fi

# nft6 returns true if IPv6 support is not enabled
	[ -z "$ipv6_enabled" ] && ipv6_error='1'
	if [ "$ipv4_error" -eq '1' ] && [ "$ipv6_error" -eq '1' ]; then
		if [ -n "$ipv6_enabled" ]; then
			processPolicyError='true'
			state add 'errorSummary' 'errorPolicyProcessInsertionFailed' "$name"
			state add 'errorSummary' 'errorPolicyProcessCMD' "nft '$param4'"
			state add 'errorSummary' 'errorPolicyProcessCMD' "nft '$param6'"
		else
			processPolicyError='true'
			state add 'errorSummary' 'errorPolicyProcessInsertionFailedIpv4' "$name"
			state add 'errorSummary' 'errorPolicyProcessCMD' "nft '$param4'"
		fi
	fi
}

policy_process() {
	local i j uid="$9"
	if [ -z "$uid" ]; then # first non-recursive call
		[ "$enabled" -gt 0 ] || return 0
		unset processPolicyError
		uid="$1"
		if is_nft; then
			chain="$(str_to_lower "$chain")"
		else
			chain="$(str_to_upper "$chain")"
		fi
		proto="$(str_to_lower "$proto")"
		[ "$proto" = 'auto' ] && unset proto
		[ "$proto" = 'all' ] && unset proto
		output 2 "Routing '$name' via $interface "
		if [ -z "${src_addr}${src_port}${dest_addr}${dest_port}" ]; then
			state add 'errorSummary' 'errorPolicyNoSrcDest' "$name"
			output_fail; return 1;
		fi
		if [ -z "$interface" ]; then
			state add 'errorSummary' 'errorPolicyNoInterface' "$name"
			output_fail; return 1;
		fi
		if ! is_supported_interface "$interface"; then
			state add 'errorSummary' 'errorPolicyUnknownInterface' "$name"
			output_fail; return 1;
		fi
		src_port="${src_port//  / }"; src_port="${src_port// /,}"; src_port="${src_port//,\!/ !}"; 
		dest_port="${dest_port//  / }"; dest_port="${dest_port// /,}"; dest_port="${dest_port//,\!/ !}";
#		if is_nft; then
#			nftset 'flush' "$interface" "dst" "ip" "$uid"
#			nftset 'flush' "$interface" "src" "ip" "$uid"
#			nftset 'flush' "$interface" "src" "mac" "$uid"
#		else
#			ips 'flush' "$interface" "dst" "ip" "$uid"
#			ips 'flush' "$interface" "src" "ip" "$uid"
#			ips 'flush' "$interface" "src" "mac" "$uid"
#		fi
		policy_process "$name" "$interface" "$src_addr" "$src_port" "$dest_addr" "$dest_port" "$proto" "$chain" "$uid"
		if [ -n "$processPolicyError" ]; then
			output_fail
		else
			output_ok
		fi
	else # recursive call, get options from passed variables
		local name="$1" interface="$2" src_addr="$3" src_port="$4" dest_addr="$5" dest_port="$6" proto="$7" chain="$8"
		if str_contains "$src_addr" '[ ;\{\}]'; then
			for i in $(str_extras_to_space "$src_addr"); do [ -n "$i" ] && policy_process "$name" "$interface" "$i" "$src_port" "$dest_addr" "$dest_port" "$proto" "$chain" "$uid"; done
		elif str_contains "$src_port" '[ ;\{\}]'; then
			for i in $(str_extras_to_space "$src_port"); do [ -n "$i" ] && policy_process "$name" "$interface" "$src_addr" "$i" "$dest_addr" "$dest_port" "$proto" "$chain" "$uid"; done
		elif str_contains "$dest_addr" '[ ;\{\}]'; then
			for i in $(str_extras_to_space "$dest_addr"); do [ -n "$i" ] && policy_process "$name" "$interface" "$src_addr" "$src_port" "$i" "$dest_port" "$proto" "$chain" "$uid"; done
		elif str_contains "$dest_port" '[ ;\{\}]'; then
			for i in $(str_extras_to_space "$dest_port"); do [ -n "$i" ] && policy_process "$name" "$interface" "$src_addr" "$src_port" "$dest_addr" "$i" "$proto" "$chain" "$uid"; done
		elif str_contains "$proto" '[ ;\{\}]'; then
			for i in $(str_extras_to_space "$proto"); do [ -n "$i" ] && policy_process "$name" "$interface" "$src_addr" "$src_port" "$dest_addr" "$dest_port" "$i" "$chain" "$uid"; done
		else
			if is_tor "$interface"; then
				policy_routing_tor "$name" "$interface" "$src_addr" "$src_port" "$dest_addr" "$dest_port" "$proto" "$chain" "$uid"
			else
				policy_routing "$name" "$interface" "$src_addr" "$src_port" "$dest_addr" "$dest_port" "$proto" "$chain" "$uid"
			fi
		fi
	fi
}

interface_process_tor() { if is_nft; then interface_process_tor_nft "$@"; else interface_process_tor_iptables "$@"; fi; }
interface_process_tor_iptables() {
	local s=0 iface="$1" action="$2"
	local displayText set_name4 set_name6
	local dnsPort trafficPort
	case "$action" in
		reload)
			displayText="${iface}/53->${dnsPort}/80,443->${trafficPort}"
			gatewaySummary="${gatewaySummary}${displayText}\\n"
			;;
		destroy)
			for i in $chainsList; do
				i="$(str_to_upper "$i")"
				ipt -t nat -D "${i}" -m mark --mark "0x0/${fw_mask}" -j "${nftPrefix}_${i}"
				ipt -t nat -F "${nftPrefix}_${i}"; ipt -t nat -X "${nftPrefix}_${i}";
			done
			;;
		create)
			output 2 "Creating TOR redirects "
			dnsPort="$(grep -m1 DNSPort /etc/tor/torrc | awk -F: '{print $2}')"
			trafficPort="$(grep -m1 TransPort /etc/tor/torrc | awk -F: '{print $2}')"
			dnsPort="${dnsPort:-9053}"; trafficPort="${trafficPort:-9040}"; 
			for i in $chainsList; do
				ipt -t nat -N "${nftPrefix}_${i}"
				ipt -t nat -A "$i" -m mark --mark "0x0/${fw_mask}" -j "${nftPrefix}_${i}"
			done
			if resolver 'create_resolver_set' "$iface" 'dst' 'ip' && ips 'flush' "$iface" 'dst' 'ip'; then
				set_name4="${ipsPrefix}_${iface}_4_dst_ip"
				for i in $chainsList; do
					i="$(str_to_lower "$i")"
					ipt -t nat -I "${nftPrefix}_${i}" -p udp -m udp --dport 53 -m set --match-set "${set_name4}" dst -j REDIRECT --to-ports "$dnsPort" -m comment --comment "TorDNS-UDP" || s=1
					ipt -t nat -I "${nftPrefix}_${i}" -p tcp -m tcp --dport 80 -m set --match-set "${set_name4}" dst -j REDIRECT --to-ports "$trafficPort" -m comment --comment "TorHTTP-TCP" || s=1
					ipt -t nat -I "${nftPrefix}_${i}" -p udp -m udp --dport 80 -m set --match-set "${set_name4}" dst -j REDIRECT --to-ports "$trafficPort" -m comment --comment "TorHTTP-UDP" || s=1
					ipt -t nat -I "${nftPrefix}_${i}" -p tcp -m tcp --dport 443 -m set --match-set "${set_name4}" dst -j REDIRECT --to-ports "$trafficPort" -m comment --comment "TorHTTPS-TCP" || s=1
					ipt -t nat -I "${nftPrefix}_${i}" -p udp -m udp --dport 443 -m set --match-set "${set_name4}" dst -j REDIRECT --to-ports "$trafficPort" -m comment --comment "TorHTTPS-UDP" || s=1
				done
			else
				s=1
			fi
			displayText="${iface}/53->${dnsPort}/80,443->${trafficPort}"
			if [ "$s" -eq 0 ]; then
				gatewaySummary="${gatewaySummary}${displayText}\\n"
				output_ok
			else
				state add 'errorSummary' 'errorFailedSetup' "$displayText"
				output_fail
			fi
			;;
	esac
	return $s
}
interface_process_tor_nft() {
	local s=0 iface="$1" action="$2"
	local displayText set_name4 set_name6
	local dnsPort trafficPort
	case "$action" in
		reload)
			displayText="${iface}/53->${dnsPort}/80,443->${trafficPort}"
			gatewaySummary="${gatewaySummary}${displayText}\\n"
			;;
		destroy)
			;;
		create)
			output 2 "Creating TOR redirects "
			dnsPort="$(grep -m1 DNSPort /etc/tor/torrc | awk -F: '{print $2}')"
			trafficPort="$(grep -m1 TransPort /etc/tor/torrc | awk -F: '{print $2}')"
			dnsPort="${dnsPort:-9053}"; trafficPort="${trafficPort:-9040}"; 
			if resolver 'create_resolver_set' "$iface" 'dst' 'ip' && nftset 'flush' "$iface" 'dst' 'ip'; then
				set_name4="${nftPrefix}_${iface}_4_dst_ip"
				set_name6="${nftPrefix}_${iface}_6_dst_ip"
				nft meta nfproto ipv4 udp daddr "@${set_name4}" dport 53 counter redirect to :"$dnsPort" comment "Tor-DNS-UDP-ipv4" || s=1
				nft meta nfproto ipv4 tcp daddr "@${set_name4}" dport 80 counter redirect to :"$trafficPort" comment "Tor-HTTP-TCP-ipv4" || s=1
				nft meta nfproto ipv4 udp daddr "@${set_name4}" dport 80 counter redirect to :"$trafficPort" comment "Tor-HTTP-UDP-ipv4" || s=1
				nft meta nfproto ipv4 tcp daddr "@${set_name4}" dport 443 counter redirect to :"$trafficPort" comment "Tor-HTTPS-TCP-ipv4" || s=1
				nft meta nfproto ipv4 udp daddr "@${set_name4}" dport 443 counter redirect to :"$trafficPort" comment "Tor-HTTPS-UDP-ipv4" || s=1
				nft6 meta nfproto ipv6 udp daddr "@${set_name6}" dport 53 counter redirect to :"$dnsPort" comment "Tor-DNS-UDP-ipv6" || s=1
				nft6 meta nfproto ipv6 tcp daddr "@${set_name6}" dport 80 counter redirect to :"$trafficPort" comment "Tor-HTTP-TCP-ipv6" || s=1
				nft6 meta nfproto ipv6 udp daddr "@${set_name6}" dport 80 counter redirect to :"$trafficPort" comment "Tor-HTTP-UDP-ipv6" || s=1
				nft6 meta nfproto ipv6 tcp daddr "@${set_name6}" dport 443 counter redirect to :"$trafficPort" comment "Tor-HTTPS-TCP-ipv6" || s=1
				nft6 meta nfproto ipv6 udp daddr "@${set_name6}" dport 443 counter redirect to :"$trafficPort" comment "Tor-HTTPS-UDP-ipv6" || s=1
			else
				s=1
			fi
			displayText="${iface}/53->${dnsPort}/80,443->${trafficPort}"
			if [ "$s" -eq 0 ]; then
				gatewaySummary="${gatewaySummary}${displayText}\\n"
				output_ok
			else
				state add 'errorSummary' 'errorFailedSetup' "$displayText"
				output_fail
			fi
			;;
	esac
	return $s
}

interface_routing() {
	local action="$1" tid="$2" mark="$3" iface="$4" gw4="$5" dev="$6" gw6="$7" dev6="$8" priority="$9"
	local dscp s=0 i ipv4_error=1 ipv6_error=1
	if [ -z "$tid" ] || [ -z "$mark" ] || [ -z "$iface" ]; then
		state add 'errorSummary' 'errorInterfaceRoutingEmptyValues'
		return 1
	fi
	case "$action" in
		create)
			if is_netifd_table "$iface"; then
				ipv4_error=0
				$ip_full -4 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
				$ip_full -4 rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv4_error=1
				if is_nft; then
					nft add chain inet "$nftTable" "${nftPrefix}_mark_${mark}" || ipv4_error=1 
					nft add rule inet "$nftTable" "${nftPrefix}_mark_${mark} counter mark set mark and ${fw_maskXor} xor ${mark}" || ipv4_error=1
					nft add rule inet "$nftTable" "${nftPrefix}_mark_${mark} return" || ipv4_error=1
				else
					ipt -t mangle -N "${iptPrefix}_MARK_${mark}" || ipv4_error=1
					ipt -t mangle -A "${iptPrefix}_MARK_${mark}" -j MARK --set-xmark "${mark}/${fw_mask}" || ipv4_error=1
					ipt -t mangle -A "${iptPrefix}_MARK_${mark}" -j RETURN || ipv4_error=1
				fi
				if [ -n "$ipv6_enabled" ]; then
					ipv6_error=0
					$ip_full -6 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
					$ip_full -6 rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv6_error=1
				fi
			else
				if ! grep -q "$tid ${ipTablePrefix}_${iface}" '/etc/iproute2/rt_tables'; then
					sed -i "/${ipTablePrefix}_${iface}/d" '/etc/iproute2/rt_tables'
					sync
					echo "$tid ${ipTablePrefix}_${iface}" >> '/etc/iproute2/rt_tables'
					sync
				fi
				$ip_full -4 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
				$ip_full -4 route flush table "$tid" >/dev/null 2>&1
				if [ -n "$gw4" ] || [ "$strict_enforcement" -ne 0 ]; then
					ipv4_error=0
					if [ -z "$gw4" ]; then
						$ip_full -4 route add unreachable default table "$tid" >/dev/null 2>&1 || ipv4_error=1
					else
						$ip_full -4 route add default via "$gw4" dev "$dev" table "$tid" >/dev/null 2>&1 || ipv4_error=1
					fi
# shellcheck disable=SC2086
					while read -r i; do
						i="$(echo "$i" | sed 's/ linkdown$//')"
						i="$(echo "$i" | sed 's/ onlink$//')"
						idev="$(echo "$i" | grep -Eso 'dev [^ ]*' | awk '{print $2}')"
						if ! is_supported_iface_dev "$idev"; then
							$ip_full -4 route add $i table "$tid" >/dev/null 2>&1 || ipv4_error=1
						fi
					done << EOF
					$($ip_full -4 route list table main)
EOF
					$ip_full -4 rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv4_error=1
					if is_nft; then
						nft add chain inet "$nftTable" "${nftPrefix}_mark_${mark}" || ipv4_error=1 
						nft add rule inet "$nftTable" "${nftPrefix}_mark_${mark} counter mark set mark and ${fw_maskXor} xor ${mark}" || ipv4_error=1
						nft add rule inet "$nftTable" "${nftPrefix}_mark_${mark} return" || ipv4_error=1
					else
						ipt -t mangle -N "${iptPrefix}_MARK_${mark}" || ipv4_error=1
						ipt -t mangle -A "${iptPrefix}_MARK_${mark}" -j MARK --set-xmark "${mark}/${fw_mask}" || ipv4_error=1
						ipt -t mangle -A "${iptPrefix}_MARK_${mark}" -j RETURN || ipv4_error=1
					fi
				fi
				if [ -n "$ipv6_enabled" ]; then
					ipv6_error=0
					$ip_full -6 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
					$ip_full -6 route flush table "$tid" >/dev/null 2>&1
					if { [ -n "$gw6" ] && [ "$gw6" != "::/0" ]; } || [ "$strict_enforcement" -ne 0 ]; then
						if [ -z "$gw6" ] || [ "$gw6" = "::/0" ]; then
							$ip_full -6 route add unreachable default table "$tid" || ipv6_error=1
						elif $ip_full -6 route list table main | grep -q " dev $dev6 "; then
							while read -r i; do
								i="$(echo "$i" | sed 's/ linkdown$//')"
								i="$(echo "$i" | sed 's/ onlink$//')"
								$ip_full -6 route add "$i" table "$tid" >/dev/null 2>&1 || ipv6_error=1
							done << EOF
							$($ip_full -6 route list table main | grep " dev $dev6 ")
EOF
						else
							$ip_full -6 route add "$($ip_full -6 -o a show "$dev6" | awk '{print $4}')" dev "$dev6" table "$tid" >/dev/null 2>&1 || ipv6_error=1
							$ip_full -6 route add default dev "$dev6" table "$tid" >/dev/null 2>&1 || ipv6_error=1
						fi
					fi
					$ip_full -6 rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv6_error=1
				fi
			fi
			if [ "$ipv4_error" -eq 0 ] || [ "$ipv6_error" -eq 0 ]; then
				dscp="$(uci -q get "${packageName}".config."${iface}"_dscp)"
				if is_nft; then
					if [ "${dscp:-0}" -ge 1 ] && [ "${dscp:-0}" -le 63 ]; then
						nft add rule inet "$nftTable" "${nftPrefix}_prerouting ip dscp ${dscp} goto ${nftPrefix}_mark_${mark}" || s=1
					fi
					if [ "$iface" = "$icmp_interface" ]; then
						nft add rule inet "$nftTable" "${nftPrefix}_output ip protocol icmp goto ${nftPrefix}_mark_${mark}" || s=1
					fi
				else
					if [ "${dscp:-0}" -ge 1 ] && [ "${dscp:-0}" -le 63 ]; then
						ipt -t mangle -I "${iptPrefix}_PREROUTING" -m dscp --dscp "${dscp}" -g "${iptPrefix}_MARK_${mark}" || s=1
					fi
					if [ "$iface" = "$icmp_interface" ]; then
						ipt -t mangle -I "${iptPrefix}_OUTPUT" -p icmp -g "${iptPrefix}_MARK_${mark}" || s=1
					fi
				fi
			else
				s=1
			fi
			return "$s"
		;;
		create_user_set)
			if is_nft; then
				nftset 'create_user_set' "$iface" 'dst' 'ip' 'user' '' "$mark" || s=1
				nftset 'create_user_set' "$iface" 'src' 'ip' 'user' '' "$mark" || s=1
				nftset 'create_user_set' "$iface" 'src' 'mac' 'user' '' "$mark" || s=1
			else
				ips 'create_user_set' "$iface" 'dst' 'ip' 'user' '' "$mark" || s=1
				ips 'create_user_set' "$iface" 'src' 'ip' 'user' '' "$mark" || s=1
				ips 'create_user_set' "$iface" 'dst' 'net' 'user' '' "$mark" || s=1
				ips 'create_user_set' "$iface" 'src' 'net' 'user' '' "$mark" || s=1
				ips 'create_user_set' "$iface" 'src' 'mac' 'user' '' "$mark" || s=1
			fi
			return "$s"
		;;
		delete|destroy)
			$ip_full rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
			if ! is_netifd_table "$iface"; then
				$ip_full route flush table "$tid" >/dev/null 2>&1
				sed -i "/${ipTablePrefix}_${iface}\$/d" '/etc/iproute2/rt_tables'
				sync
			fi
			return "$s"
		;;
		reload_interface)
			is_netifd_table "$iface" && return 0;
			ipv4_error=0
			$ip_full -4 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
			$ip_full -4 route flush table "$tid" >/dev/null 2>&1
			if [ -n "$gw4" ] || [ "$strict_enforcement" -ne 0 ]; then
				if [ -z "$gw4" ]; then
					$ip_full -4 route add unreachable default table "$tid" >/dev/null 2>&1 || ipv4_error=1
				else
					$ip_full -4 route add default via "$gw4" dev "$dev" table "$tid" >/dev/null 2>&1 || ipv4_error=1
				fi
				$ip_full rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv4_error=1
			fi
			if [ -n "$ipv6_enabled" ]; then
				ipv6_error=0
				$ip_full -6 rule del fwmark "${mark}/${fw_mask}" table "$tid" >/dev/null 2>&1
				$ip_full -6 route flush table "$tid" >/dev/null 2>&1
				if { [ -n "$gw6" ] && [ "$gw6" != "::/0" ]; } || [ "$strict_enforcement" -ne 0 ]; then
					if [ -z "$gw6" ] || [ "$gw6" = "::/0" ]; then
						$ip_full -6 route add unreachable default table "$tid" || ipv6_error=1
					elif $ip_full -6 route list table main | grep -q " dev $dev6 "; then
						while read -r i; do
							$ip_full -6 route add "$i" table "$tid" >/dev/null 2>&1 || ipv6_error=1
						done << EOF
						$($ip_full -6 route list table main | grep " dev $dev6 ")
EOF
					else
						$ip_full -6 route add "$($ip_full -6 -o a show "$dev6" | awk '{print $4}')" dev "$dev6" table "$tid" >/dev/null 2>&1 || ipv6_error=1
						$ip_full -6 route add default dev "$dev6" table "$tid" >/dev/null 2>&1 || ipv6_error=1
					fi
				fi
				$ip_full -6 rule add fwmark "${mark}/${fw_mask}" table "$tid" priority "$priority" || ipv6_error=1
			fi
			if [ "$ipv4_error" -eq 0 ] || [ "$ipv6_error" -eq 0 ]; then
				s=0
			else
				s=1
			fi
			return "$s"
		;;
	esac
}

json_add_gateway() {
	local action="$1" tid="$2" mark="$3" iface="$4" gw4="$5" dev4="$6" gw6="$7" dev6="$8" priority="$9" default="${10}"
	json_add_object ''
	json_add_string name "$iface"
	json_add_string device_ipv4 "$dev4"
	json_add_string gateway_ipv4 "$gw4"
	json_add_string device_ipv6 "$dev6"
	json_add_string gateway_ipv6 "$gw6"
	if [ -n "$default" ]; then
		json_add_boolean default true
	else
		json_add_boolean default false
	fi
	json_add_string action "$action"
	json_add_string table_id "$tid"
	json_add_string mark "$mark"
	json_add_string priority "$priority"
	json_close_object
}

interface_process() {
	local gw4 gw6 dev dev6 s=0 dscp iface="$1" action="$2" reloadedIface="$3"
	local displayText dispDev dispGw4 dispGw6 dispStatus

	if [ "$iface" = 'all' ] && [ "$action" = 'prepare' ]; then
		config_load 'network'
		ifaceMark="$(printf '0x%06x' "$wan_mark")"
		ifacePriority="$wan_ip_rules_priority"
		return 0
	fi

	is_supported_interface "$iface" || return 0
	is_wan6 "$iface" && return 0
	[ $((ifaceMark)) -gt $((fw_mask)) ] && return 1

	network_get_device dev "$iface"
	if is_wan "$iface" && [ -n "$wanIface6" ] && str_contains "$wanIface6" "$iface"; then
		network_get_device dev6 "$wanIface6"
	fi

	[ -z "$dev6" ] && dev6="$dev"
	[ -z "$ifaceMark" ] && ifaceMark="$(printf '0x%06x' "$wan_mark")"
	[ -z "$ifacePriority" ] && ifacePriority="$wan_ip_rules_priority"

	ifaceTableID="$(get_rt_tables_id "$iface")"
	[ -z "$ifaceTableID" ] && ifaceTableID="$(get_rt_tables_next_id)"
	eval "mark_${iface//-/_}"='$ifaceMark'
	eval "tid_${iface//-/_}"='$ifaceTableID'
	pbr_get_gateway gw4 "$iface" "$dev"
	pbr_get_gateway6 gw6 "$iface" "$dev6"
	dispGw4="${gw4:-0.0.0.0}"
	dispGw6="${gw6:-::/0}"
	[ "$iface" != "$dev" ] && dispDev="$dev"
	is_default_dev "$dev" && dispStatus="${__OK__}"
	displayText="${iface}/${dispDev:+$dispDev/}${dispGw4}${ipv6_enabled:+/$dispGw6}"

	case "$action" in
		create)
			output 2 "Setting up routing for '$displayText' "
			if interface_routing 'create' "$ifaceTableID" "$ifaceMark" "$iface" "$gw4" "$dev" "$gw6" "$dev6" "$ifacePriority"; then
				json_add_gateway 'create' "$ifaceTableID" "$ifaceMark" "$iface" "$gw4" "$dev" "$gw6" "$dev6" "$ifacePriority" "$dispStatus"
				gatewaySummary="${gatewaySummary}${displayText}${dispStatus:+ $dispStatus}\\n"
				output_ok
			else
				state add 'errorSummary' 'errorFailedSetup' "$displayText"
				output_fail
			fi
		;;
		create_user_set)
			interface_routing 'create_user_set' "$ifaceTableID" "$ifaceMark" "$iface" "$gw4" "$dev" "$gw6" "$dev6" "$ifacePriority"
		;;
		destroy)
			displayText="${iface}/${dispDev:+$dispDev/}${dispGw4}${ipv6_enabled:+/$dispGw6}"
			output 2 "Removing routing for '$displayText' "
			interface_routing 'destroy' "${ifaceTableID}" "${ifaceMark}" "${iface}"
			output_ok
		;;
		reload)
			gatewaySummary="${gatewaySummary}${displayText}${dispStatus:+ $dispStatus}\\n"
		;;
		reload_interface)
			if [ "$iface" = "$reloadedIface" ]; then
				output 2 "Reloading routing for '$displayText' "
				if interface_routing 'reload_interface' "$ifaceTableID" "$ifaceMark" "$iface" "$gw4" "$dev" "$gw6" "$dev6" "$ifacePriority"; then
					json_add_gateway 'reload_interface' "$ifaceTableID" "$ifaceMark" "$iface" "$gw4" "$dev" "$gw6" "$dev6" "$ifacePriority" "$dispStatus"
					gatewaySummary="${gatewaySummary}${displayText}${dispStatus:+ $dispStatus}\\n"
					output_ok
				else
					state add 'errorSummary' 'errorFailedReload' "$displayText"
					output_fail
				fi
			else
				gatewaySummary="${gatewaySummary}${displayText}${dispStatus:+ $dispStatus}\\n"
			fi
		;;
	esac
#	ifaceTableID="$((ifaceTableID + 1))"
	ifaceMark="$(printf '0x%06x' $((ifaceMark + wan_mark)))"
	ifacePriority="$((ifacePriority + 1))"
	return $s
}

user_file_process() {
	local shellBin="${SHELL:-/bin/ash}"
	[ "$enabled" -gt 0 ] || return 0
	if [ ! -s "$path" ]; then
		state add 'errorSummary' 'errorUserFileNotFound' "$path"
		output_fail
		return 1
	fi
	if ! $shellBin -n "$path"; then
		state add 'errorSummary' 'ererrorUserFileSyntax' "$path"
		output_fail
		return 1
	fi
	output 2 "Running $path "
# shellcheck disable=SC1090
	if ! . "$path"; then
		state add 'errorSummary' 'errorUserFileRunning' "$path"
		if grep -q -w 'curl' "$path" && ! is_present 'curl'; then
			state add 'errorSummary' 'errorUserFileNoCurl' "$path"
		fi
		output_fail
		return 1
	else
		output_ok
		return 0
	fi
}

on_firewall_reload() { 
	if [ -z "$(ubus_get_status 'gateways')" ]; then # service is not running, do not start it on firewall reload
		logger -t "$packageName" "Reload on firewall action aborted: service not running."
		return 0;
	else
		rc_procd start_service 'on_firewall_reload' "$1"
	fi
}
on_interface_reload() { rc_procd start_service 'on_interface_reload' "$1"; }

start_service() {
	local resolverStoredHash resolverNewHash i reloadedIface param="$1"

	load_environment 'on_start' "$(load_validate_config)" || return 1
	is_wan_up || return 1
	rm -f "$nftTempFile"

	case "$param" in
		on_boot)
			serviceStartTrigger='on_start'
		;;
		on_firewall_reload)
			serviceStartTrigger='on_start'
		;;
		on_interface_reload)
			serviceStartTrigger='on_interface_reload'
			reloadedIface="$2"
		;;
		on_reload)
			serviceStartTrigger='on_reload'
		;;
		on_restart)
			serviceStartTrigger='on_start'
		;;
	esac

	if [ -n "$reloadedIface" ] && ! is_supported_interface "$reloadedIface"; then
		return 0
	fi

	if [ -n "$(ubus_get_status error)" ] || [ -n "$(ubus_get_status warning)" ]; then
		serviceStartTrigger='on_start'
		unset reloadedIface
	elif ! is_service_running; then
		serviceStartTrigger='on_start'
		unset reloadedIface
	elif [ -z "$(ubus_get_status gateway)" ]; then
		serviceStartTrigger='on_start'
		unset reloadedIface
	elif [ "$serviceStartTrigger" = 'on_interface_reload' ] && \
			 [ -z "$(ubus_get_interface "$reloadedIface" 'gateway_4')" ] && \
			 [ -z "$(ubus_get_interface "$reloadedIface" 'gateway_6')" ]; then
		serviceStartTrigger='on_start'
		unset reloadedIface
	else
		serviceStartTrigger="${serviceStartTrigger:-on_start}"
	fi

	procd_open_instance "main"
	procd_set_param command /bin/true
	procd_set_param stdout 1
	procd_set_param stderr 1
	procd_open_data

	case $serviceStartTrigger in
		on_interface_reload)
			output 1 "Reloading Interface: $reloadedIface "
			json_add_array 'gateways'
			interface_process 'all' 'prepare'
			config_foreach interface_process 'interface' 'reload_interface' "$reloadedIface"
			json_close_array
			output 1 '\n'
		;;
		on_reload)
			traffic_killswitch 'insert'
			resolver 'store_hash'
			resolver 'cleanup_all'
			resolver 'configure'
			resolver 'init'
			cleanup_main_chains
			cleanup_sets
			if ! is_nft; then
				for i in $chainsList; do
					i="$(str_to_upper "$i")"
					ipt -t mangle -N "${iptPrefix}_${i}"
					ipt -t mangle "$rule_create_option" "$i" -m mark --mark "0x0/${fw_mask}" -j "${iptPrefix}_${i}"
				done
			fi
			json_add_array 'gateways'
			interface_process 'all' 'prepare'
			config_foreach interface_process 'interface' 'reload'
			interface_process_tor 'tor' 'destroy'
			is_tor_running && interface_process_tor 'tor' 'reload'
			json_close_array
			if is_config_enabled 'policy'; then
				output 1 'Processing policies '
				config_load "$packageName"
				config_foreach load_validate_policy 'policy' policy_process
				output 1 '\n'
			fi
			if is_config_enabled 'include'; then
				interface_process 'all' 'prepare'
				config_foreach interface_process 'interface' 'create_user_set'
				output 1 'Processing user file(s) '
				config_load "$packageName"
				config_foreach load_validate_include 'include' user_file_process
				output 1 '\n'
			fi
			resolver 'init_end'
			resolver 'compare_hash' && resolver 'restart'
			traffic_killswitch 'remove'
		;;
		on_start|*)
			traffic_killswitch 'insert'
			resolver 'store_hash'
			resolver 'cleanup_all'
			resolver 'configure'
			resolver 'init'
			cleanup_main_chains
			cleanup_sets
			cleanup_marking_chains
			cleanup_rt_tables
			if ! is_nft; then
				for i in $chainsList; do
					i="$(str_to_upper "$i")"
					ipt -t mangle -N "${iptPrefix}_${i}"
					ipt -t mangle "$rule_create_option" "$i" -m mark --mark "0x0/${fw_mask}" -j "${iptPrefix}_${i}"
				done
			fi
			output 1 'Processing interfaces '
			json_add_array 'gateways'
			interface_process 'all' 'prepare'
			config_foreach interface_process 'interface' 'create'
			interface_process_tor 'tor' 'destroy'
			is_tor_running && interface_process_tor 'tor' 'create'
			json_close_array
			ip route flush cache
			output 1 '\n'
			if is_config_enabled 'policy'; then
				output 1 'Processing policies '
				config_load "$packageName"
				config_foreach load_validate_policy 'policy' policy_process
				output 1 '\n'
			fi
			if is_config_enabled 'include'; then
				interface_process 'all' 'prepare'
				config_foreach interface_process 'interface' 'create_user_set'
				output 1 'Processing user file(s) '
				config_load "$packageName"
				config_foreach load_validate_include 'include' user_file_process
				output 1 '\n'
			fi
			resolver 'init_end'
			resolver 'compare_hash' && resolver 'restart'
			traffic_killswitch 'remove'
		;;
	esac

	if [ -z "$gatewaySummary" ]; then
		state add 'errorSummary' 'errorNoGateways'
	fi
	json_add_object 'status'
	[ -n "$gatewaySummary" ] && json_add_string 'gateways' "$gatewaySummary"
	[ -n "$errorSummary" ] && json_add_string 'errors' "$errorSummary"
	[ -n "$warningSummary" ] && json_add_string 'warnings' "$warningSummary"
	if [ "$strict_enforcement" -ne 0 ] && str_contains "$gatewaySummary" '0.0.0.0'; then
		json_add_string 'mode' "strict"
	fi
	json_close_object
	procd_close_data
	procd_close_instance
}

service_started() {
	if is_nft; then
		[ -n "$gatewaySummary" ] && output "$serviceName (nft) started with gateways:\\n${gatewaySummary}"
	else
		[ -n "$gatewaySummary" ] && output "$serviceName (iptables) started with gateways:\\n${gatewaySummary}"
	fi
	state print 'errorSummary'
	state print 'warningSummary'
	if [ -n "$errorSummary" ]; then
		return 2
	elif [ -n "$warningSummary" ]; then
		return 1
	else
		return 0
	fi
}

service_triggers() {
	local n
	load_environment 'on_triggers'
# shellcheck disable=SC2034
	PROCD_RELOAD_DELAY=$(( procd_reload_delay * 1000 ))
	procd_open_validate
		load_validate_config
		load_validate_policy
		load_validate_include
	procd_close_validate
	procd_open_trigger
		procd_add_reload_trigger 'openvpn'
		procd_add_config_trigger "config.change" "${packageName}" /etc/init.d/${packageName} reload
		for n in $ifacesSupported; do 
			procd_add_interface_trigger "interface.*" "$n" /etc/init.d/${packageName} on_interface_reload "$n"
		done
	procd_close_trigger
	if [ "$serviceStartTrigger" = 'on_start' ]; then
		output 3 "$serviceName monitoring interfaces: ${ifacesSupported}\\n"
	fi
}

stop_service() {
	local i
	load_environment 'on_stop'
	is_service_running || return 0
	traffic_killswitch 'insert'
	cleanup_main_chains
	cleanup_sets
	cleanup_marking_chains
	output 1 'Resetting interfaces '
	config_load 'network'
	config_foreach interface_process 'interface' 'destroy'
	interface_process_tor 'tor' 'destroy'
	cleanup_rt_tables
	output 1 "\\n"
	ip route flush cache
	unset ifaceMark
	unset ifaceTableID
	resolver 'store_hash'
	resolver 'cleanup_all'
	resolver 'compare_hash' && resolver 'restart'
	traffic_killswitch 'remove'
	if [ "$enabled" -ne 0 ]; then
		if is_nft; then
			output "$serviceName (nft) stopped "; output_okn;
		else
			output "$serviceName (iptables) stopped "; output_okn;
		fi
	fi
}

status_service() {
	local _SEPARATOR_='============================================================'
	load_environment 'on_status'
	if is_nft; then
		status_service_nft "$@"
	else
		status_service_iptables "$@"
	fi
}

status_service_nft() {
	local i dev dev6 wan_tid

	json_load "$(ubus call system board)"; json_select release; json_get_var dist distribution; json_get_var vers version
	if [ -n "$wanIface4" ]; then
		network_get_gateway wanGW4 "$wanIface4"
		network_get_device dev "$wanIface4"
	fi
	if [ -n "$wanIface6" ]; then
		network_get_device dev6 "$wanIface6"
		wanGW6=$($ip_full -6 route show | grep -m1 " dev $dev6 " | awk '{print $1}')
		[ "$wanGW6" = "default" ] && wanGW6=$($ip_full -6 route show | grep -m1 " dev $dev6 " | awk '{print $3}')
	fi
	while [ "${1:0:1}" = "-" ]; do param="${1//-/}"; eval "set_$param=1"; shift; done
	[ -e "/var/${packageName}-support" ] && rm -f "/var/${packageName}-support"
	status="$serviceName running on $dist $vers."
	[ -n "$wanIface4" ] && status="$status WAN (IPv4): ${wanIface4}/${dev}/${wanGW4:-0.0.0.0}."
	[ -n "$wanIface6" ] && status="$status WAN (IPv6): ${wanIface6}/${dev6}/${wanGW6:-::/0}."

	echo "$_SEPARATOR_"
	echo "$packageName - environment"
	echo "$status"
	echo "$_SEPARATOR_"
	dnsmasq --version 2>/dev/null | sed '/^$/,$d'
	echo "$_SEPARATOR_"
	echo "$packageName chains - policies"
	for i in forward input output prerouting postrouting; do
		"$nft" list table inet "$nftTable" | sed -n "/chain ${nftPrefix}_${i} {/,/\t}/p"
	done
	echo "$_SEPARATOR_"
	echo "$packageName chains - marking"
	for i in $(get_mark_nft_chains); do
		"$nft" list table inet "$nftTable" | sed -n "/chain ${i} {/,/\t}/p"
	done
	echo "$_SEPARATOR_"
	echo "$packageName nft sets"
	for i in $(get_nft_sets); do
		"$nft" list table inet "$nftTable" | sed -n "/set ${i} {/,/\t}/p"
	done
	if [ -s "$dnsmasqFile" ]; then
		echo "$_SEPARATOR_"
		echo "dnsmasq sets"
		cat "$dnsmasqFile"
	fi
#	echo "$_SEPARATOR_"
#	ip rule list | grep "${packageName}_"
	echo "$_SEPARATOR_"
	tableCount="$(grep -c "${packageName}_" /etc/iproute2/rt_tables)" || tableCount=0
	wan_tid=$(($(get_rt_tables_next_id)-tableCount))
	i=0; while [ $i -lt "$tableCount" ]; do 
		echo "IPv4 table $((wan_tid + i)) route: $($ip_full -4 route show table $((wan_tid + i)) | grep default)"
		echo "IPv4 table $((wan_tid + i)) rule(s):"
		$ip_full -4 rule list table "$((wan_tid + i))"
		i=$((i + 1))
	done
}

status_service_iptables() {
	local dist vers out id s param status set_d set_p tableCount i=0 dev dev6 j wan_tid

	json_load "$(ubus call system board)"; json_select release; json_get_var dist distribution; json_get_var vers version
	if [ -n "$wanIface4" ]; then
		network_get_gateway wanGW4 "$wanIface4"
		network_get_device dev "$wanIface4"
	fi
	if [ -n "$wanIface6" ]; then
		network_get_device dev6 "$wanIface6"
		wanGW6=$($ip_full -6 route show | grep -m1 " dev $dev6 " | awk '{print $1}')
		[ "$wanGW6" = "default" ] && wanGW6=$($ip_full -6 route show | grep -m1 " dev $dev6 " | awk '{print $3}')
	fi
	while [ "${1:0:1}" = "-" ]; do param="${1//-/}"; eval "set_$param=1"; shift; done
	[ -e "/var/${packageName}-support" ] && rm -f "/var/${packageName}-support"
	status="$serviceName running on $dist $vers."
	[ -n "$wanIface4" ] && status="$status WAN (IPv4): ${wanIface4}/${dev}/${wanGW4:-0.0.0.0}."
	[ -n "$wanIface6" ] && status="$status WAN (IPv6): ${wanIface6}/${dev6}/${wanGW6:-::/0}."
	{
		echo "$status"
		echo "$_SEPARATOR_"
		dnsmasq --version 2>/dev/null | sed '/^$/,$d'
		if [ -n "$1" ]; then
			echo "$_SEPARATOR_"
			echo "Resolving domains"
			for i in $1; do
				echo "$i: $(resolveip "$i" | tr '\n' ' ')"
			done
		fi

		echo "$_SEPARATOR_"
		echo "Routes/IP Rules"
		tableCount="$(grep -c "${packageName}_" /etc/iproute2/rt_tables)" || tableCount=0
		if [ -n "$set_d" ]; then route; else route | grep '^default'; fi
		if [ -n "$set_d" ]; then ip rule list; fi
		wan_tid=$(($(get_rt_tables_next_id)-tableCount))
		i=0; while [ $i -lt "$tableCount" ]; do 
			echo "IPv4 table $((wan_tid + i)) route: $($ip_full -4 route show table $((wan_tid + i)) | grep default)"
			echo "IPv4 table $((wan_tid + i)) rule(s):"
			$ip_full -4 rule list table "$((wan_tid + i))"
			i=$((i + 1))
		done

		if [ -n "$ipv6_enabled" ]; then
			i=0; while [ $i -lt "$tableCount" ]; do
				$ip_full -6 route show table $((wan_tid + i)) | while read -r param; do
					echo "IPv6 Table $((wan_tid + i)): $param"
				done
				i=$((i + 1))
			done
		fi

		for j in Mangle NAT; do
			if [ -z "$set_d" ]; then
				for i in $chainsList; do
					i="$(str_to_upper "$i")"
					if iptables -v -t "$(str_to_lower $j)" -S "${iptPrefix}_${i}" >/dev/null 2>&1; then
						echo "$_SEPARATOR_"
						echo "$j IP Table: $i"
						iptables -v -t "$(str_to_lower $j)" -S "${iptPrefix}_${i}"
						if [ -n "$ipv6_enabled" ]; then
							echo "$_SEPARATOR_"
							echo "$j IPv6 Table: $i"
							iptables -v -t "$(str_to_lower $j)" -S "${iptPrefix}_${i}"
						fi
					fi
				done
			else
				echo "$_SEPARATOR_"
				echo "$j IP Table"
				iptables -L -t "$(str_to_lower $j)"
				if [ -n "$ipv6_enabled" ]; then
					echo "$_SEPARATOR_"
					echo "$j IPv6 Table"
					iptables -L -t "$(str_to_lower $j)"
				fi
			fi
			i=0; ifaceMark="$wan_mark";
			while [ $i -lt "$tableCount" ]; do
				if iptables -v -t "$(str_to_lower $j)" -S "${iptPrefix}_MARK_${ifaceMark}" >/dev/null 2>&1; then
					echo "$_SEPARATOR_"
					echo "$j IP Table MARK Chain: ${iptPrefix}_MARK_${ifaceMark}"
					iptables -v -t "$(str_to_lower $j)" -S "${iptPrefix}_MARK_${ifaceMark}"
					ifaceMark="$(printf '0x%06x' $((ifaceMark + wan_mark)))";
				fi
				i=$((i + 1))
			done
		done

		echo "$_SEPARATOR_"
		echo "Current ipsets"
		ipset save
		if [ -s "$dnsmasqFile" ]; then
			echo "$_SEPARATOR_"
			echo "DNSMASQ sets"
			cat "$dnsmasqFile"
		fi
		if [ -s "$aghIpsetFile" ]; then
			echo "$_SEPARATOR_"
			echo "AdGuardHome sets"
			cat "$aghIpsetFile"
		fi
		echo "$_SEPARATOR_"
	} | tee -a /var/${packageName}-support
	if [ -n "$set_p" ]; then
		printf "%b" "Pasting to paste.ee... "
		if is_present 'curl' && is_variant_installed 'libopenssl' && is_installed 'ca-bundle'; then
			json_init; json_add_string "description" "${packageName}-support"
			json_add_array "sections"; json_add_object '0'
			json_add_string "name" "$(uci -q get system.@system[0].hostname)"
			json_add_string "contents" "$(cat /var/${packageName}-support)"
			json_close_object; json_close_array; payload=$(json_dump)
			out=$(curl -s -k "https://api.paste.ee/v1/pastes" -X "POST" -H "Content-Type: application/json" -H "X-Auth-Token:uVOJt6pNqjcEWu7qiuUuuxWQafpHhwMvNEBviRV2B" -d "$payload")
			json_load "$out"; json_get_var id id; json_get_var s success
			[ "$s" = "1" ] && printf "%b" "https://paste.ee/p/$id $__OK__\\n" || printf "%b" "$__FAIL__\\n"
			[ -e "/var/${packageName}-support" ] && rm -f "/var/${packageName}-support"
		else
			printf "%b" "${__FAIL__}\\n"
			printf "%b" "${_ERROR_}: The curl, libopenssl or ca-bundle packages were not found!\\nRun 'opkg update; opkg install curl libopenssl ca-bundle' to install them.\\n"
		fi
	else
		printf "%b" "Your support details have been logged to '/var/${packageName}-support'. $__OK__\\n"
	fi
}

# shellcheck disable=SC2120
load_validate_config() {
	uci_load_validate "$packageName" "$packageName" "$1" "${2}${3:+ $3}" \
		'enabled:bool:0' \
		'procd_boot_delay:integer:0' \
		'strict_enforcement:bool:1' \
		'secure_reload:bool:0' \
		'ipv6_enabled:bool:0' \
		'resolver_set:or("", "none", "dnsmasq.ipset", "dnsmasq.nftset")' \
		'verbosity:range(0,2):1' \
		"wan_mark:regex('0x[A-Fa-f0-9]{8}'):0x010000" \
		"fw_mask:regex('0x[A-Fa-f0-9]{8}'):0xff0000" \
		'icmp_interface:or("","ignore", uci("network", "@interface"))' \
		'ignored_interface:list(uci("network", "@interface"))' \
		'supported_interface:list(uci("network", "@interface"))' \
		'boot_timeout:integer:30' \
		'wan_ip_rules_priority:uinteger:30000' \
		'rule_create_option:or("", "add", "insert"):add' \
		'procd_reload_delay:integer:0' \
		'webui_supported_protocol:list(string)' \
		'nft_user_set_policy:or("", "memory", "performance")'\
		'nft_user_set_counter:bool:0'
}

# shellcheck disable=SC2120
load_validate_policy() {
	local name
	local enabled
	local interface
	local proto
	local chain
	local src_addr
	local src_port
	local dest_addr
	local dest_port
	uci_load_validate "$packageName" 'policy' "$1" "${2}${3:+ $3}" \
		'name:string:Untitled' \
		'enabled:bool:1' \
		'interface:or(uci("network", "@interface"),"ignore"):wan' \
		'proto:or(string)' \
		'chain:or("", "forward", "input", "output", "prerouting", "postrouting", "FORWARD", "INPUT", "OUTPUT", "PREROUTING", "POSTROUTING"):prerouting' \
		'src_addr:list(neg(or(host,network,macaddr,string)))' \
		'src_port:list(neg(or(portrange,string)))' \
		'dest_addr:list(neg(or(host,network,string)))' \
		'dest_port:list(neg(or(portrange,string)))'
}

# shellcheck disable=SC2120
load_validate_include() {
	local path=
	local enabled=
	uci_load_validate "$packageName" 'include' "$1" "${2}${3:+ $3}" \
		'path:file' \
		'enabled:bool:0'
}