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#!/bin/sh

CFG=/etc/board.json

. /usr/share/libubox/jshn.sh

[ -f $CFG ] || exit 1

generate_static_network() {
	uci -q batch <<-EOF
		delete network.loopback
		set network.loopback='interface'
		set network.loopback.ifname='lo'
		set network.loopback.proto='static'
		set network.loopback.ipaddr='127.0.0.1'
		set network.loopback.netmask='255.0.0.0'
		delete network.globals
		set network.globals='globals'
		set network.globals.ula_prefix='auto'
	EOF

	if json_is_a dsl object; then
		json_select dsl
			if json_is_a atmbridge object; then
				json_select atmbridge
					local vpi vci encaps payload
					json_get_vars vpi vci encaps payload
					uci -q batch <<-EOF
						delete network.atm
						set network.atm='atm-bridge'
						set network.atm.vpi='$vpi'
						set network.atm.vci='$vci'
						set network.atm.encaps='$encaps'
						set network.atm.payload='$payload'
					EOF
				json_select ..
			fi

			if json_is_a modem object; then
				json_select modem
					local type annex firmware tone xfer_mode
					json_get_vars type annex firmware tone xfer_mode
					uci -q batch <<-EOF
						delete network.dsl
						set network.dsl='dsl'
						set network.dsl.annex='$annex'
						set network.dsl.firmware='$firmware'
						set network.dsl.tone='$tone'
						set network.dsl.xfer_mode='$xfer_mode'
					EOF
				json_select ..
			fi
		json_select ..
	fi
}

addr_offset=2
generate_network() {
	local ifname macaddr protocol type ipaddr netmask

	json_select network
		json_select "$1"
			json_get_vars ifname macaddr protocol ipaddr netmask
		json_select ..
	json_select ..

	[ -n "$ifname" ] || return

	# force bridge for multi-interface devices (and lan)
	case "$1:$ifname" in
		*\ * | lan:*) type="bridge" ;;
	esac

	uci -q batch <<-EOF
		delete network.$1
		set network.$1='interface'
		set network.$1.type='$type'
		set network.$1.ifname='$ifname'
		set network.$1.proto='none'
	EOF

	[ -n "$macaddr" ] && uci -q batch <<-EOF
		delete network.$1_dev
		set network.$1_dev='device'
		set network.$1_dev.name='$ifname'
		set network.$1_dev.macaddr='$macaddr'
	EOF

	case "$protocol" in
		static)
			local ipad
			case "$1" in
				lan) ipad=${ipaddr:-"192.168.1.1"} ;;
				*) ipad=${ipaddr:-"192.168.$((addr_offset++)).1"} ;;
			esac

			netm=${netmask:-"255.255.255.0"}

			uci -q batch <<-EOF
				set network.$1.proto='static'
				set network.$1.ipaddr='$ipad'
				set network.$1.netmask='$netm'
				set network.$1.ip6assign='60'
			EOF
		;;

		dhcp)
			# fixup IPv6 slave interface if parent is a bridge
			[ "$type" = "bridge" ] && ifname="br-$1"

			uci -q batch <<-EOF
				set network.$1.proto='dhcp'
				delete network.${1}6
				set network.${1}6='interface'
				set network.${1}6.ifname='$ifname'
				set network.${1}6.proto='dhcpv6'
			EOF
		;;

		pppoe)
			# fixup IPv6 slave interface
			ifname="pppoe-$1"

			uci -q batch <<-EOF
				set network.$1.proto='pppoe'
				set network.$1.username='username'
				set network.$1.password='password'
				set network.$1.ipv6='auto'
				delete network.${1}6
				set network.${1}6='interface'
				set network.${1}6.ifname='$ifname'
				set network.${1}6.proto='dhcpv6'
			EOF
		;;
	esac
}

generate_switch_vlans_ports() {
	local switch="$1"
	local port ports role roles num attr val

	#
	# autogenerate vlans
	#

	if json_is_a roles array; then
		json_get_keys roles roles
		json_select roles

		for role in $roles; do
			json_select "$role"
				json_get_vars ports
			json_select ..

			uci -q batch <<-EOF
				add network switch_vlan
				set network.@switch_vlan[-1].device='$switch'
				set network.@switch_vlan[-1].vlan='$role'
				set network.@switch_vlan[-1].ports='$ports'
			EOF
		done

		json_select ..
	fi


	#
	# write port specific settings
	#

	if json_is_a ports array; then
		json_get_keys ports ports
		json_select ports

		for port in $ports; do
			json_select "$port"
				json_get_vars num

				if json_is_a attr object; then
					json_get_keys attr attr
					json_select attr
						uci -q batch <<-EOF
							add network switch_port
							set network.@switch_port[-1].device='$switch'
							set network.@switch_port[-1].port=$num
						EOF

						for attr in $attr; do
							json_get_var val "$attr"
							uci -q set network.@switch_port[-1].$attr="$val"
						done
					json_select ..
				fi
			json_select ..
		done

		json_select ..
	fi
}

generate_switch() {
	local key="$1"
	local vlans

	json_select switch
	json_select "$key"
	json_get_vars enable reset blinkrate cpu_port

	uci -q batch <<-EOF
		add network switch
		set network.@switch[-1].name='$key'
		set network.@switch[-1].reset='$reset'
		set network.@switch[-1].enable_vlan='$enable'
		set network.@switch[-1].blinkrate='$blinkrate'
	EOF

	generate_switch_vlans_ports "$1"

	json_select ..
	json_select ..
}

generate_rssimon() {
	local key="$1"
	local cfg="rssid_$key"
	local refresh threshold

	json_select rssimon
	json_select "$key"
	json_get_vars refresh threshold
	json_select ..
	json_select ..

	uci -q batch <<-EOF
		delete system.$cfg
		set system.$cfg='rssid'
		set system.$cfg.dev='$key'
		set system.$cfg.refresh='$refresh'
		set system.$cfg.threshold='$threshold'
	EOF
}

generate_led() {
	local key="$1"
	local cfg="led_$key"

	json_select led
	json_select "$key"
	json_get_vars name sysfs type trigger default

	uci -q batch <<-EOF
		delete system.$cfg
		set system.$cfg='led'
		set system.$cfg.name='$name'
		set system.$cfg.sysfs='$sysfs'
		set system.$cfg.trigger='$trigger'
		set system.$cfg.default='$default'
	EOF

	case "$type" in
		gpio)
			local gpio inverted
			json_get_vars gpio inverted
			uci -q batch <<-EOF
				set system.$cfg.trigger='gpio'
				set system.$cfg.gpio='$gpio'
				set system.$cfg.inverted='$inverted'
			EOF
		;;

		netdev)
			local device mode
			json_get_vars device mode
			uci -q batch <<-EOF
				set system.$cfg.trigger='netdev'
				set system.$cfg.mode='$mode'
				set system.$cfg.dev='$device'
			EOF
		;;

		usb)
			local device
			json_get_vars device
			uci -q batch <<-EOF
				set system.$cfg.trigger='usbdev'
				set system.$cfg.interval='50'
				set system.$cfg.dev='$device'
			EOF
		;;

		rssi)
			local iface minq maxq offset factor
			json_get_vars iface minq maxq offset factor
			uci -q batch <<-EOF
				set system.$cfg.trigger='rssi'
				set system.$cfg.iface='rssid_$iface'
				set system.$cfg.minq='$minq'
				set system.$cfg.maxq='$maxq'
				set system.$cfg.offset='$offset'
				set system.$cfg.factor='$factor'
			EOF
		;;

		switch)
			local port_mask speed_mask
			json_get_vars port_mask speed_mask
			uci -q batch <<-EOF
				set system.$cfg.port_mask='$port_mask'
				set system.$cfg.speed_mask='$speed_mask'
			EOF
		;;

		timer|oneshot)
			local delayon delayoff
			json_get_vars delayon delayoff
			uci -q batch <<-EOF
				set system.$cfg.trigger='$type'
				set system.$cfg.delayon='$delayon'
				set system.$cfg.delayoff='$delayoff'
			EOF
		;;
	esac

	json_select ..
	json_select ..
}

generate_gpioswitch() {
	local cfg="$1"

	json_select gpioswitch
		json_select "$cfg"
			local name pin default
			json_get_vars name pin default
			uci -q batch <<-EOF
				delete system.$cfg
				set system.$cfg='gpio_switch'
				set system.$cfg.name='$name'
				set system.$cfg.gpio_pin='$pin'
				set system.$cfg.default='$default'
			EOF
		json_select ..
	json_select ..
}

json_init
json_load "$(cat ${CFG})"

generate_static_network

json_get_keys keys network
for key in $keys; do generate_network $key; done

json_get_keys keys switch
for key in $keys; do generate_switch $key; done

json_get_keys keys rssimon
for key in $keys; do generate_rssimon $key; done

json_get_keys keys gpioswitch
for key in $keys; do generate_gpioswitch $key; done

json_get_keys keys led
for key in $keys; do generate_led $key; done

uci commit