gluon-next-node: convert upgrade script to Lua

package/gluon-next-node/Makefile

 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=gluon-next-node
-PKG_VERSION:=1
-PKG_RELEASE:=1.$(GLUON_CONFIG_VERSION)
+PKG_VERSION:=2
 
 PKG_BUILD_DIR := $(BUILD_DIR)/$(PKG_NAME)
 
@@ -30,6 +29,7 @@ define Build/Compile
 endef
 
 define Package/gluon-next-node/install
+	$(CP) ./files/* $(1)/
 	$(GLUON_GENERATE) ./generate/* $(1)/
 endef
 

package/gluon-next-node/files/lib/gluon/upgrade/next-node/invariant/010-next-node

+#!/usr/bin/lua
+
+local site = require 'gluon.site_config'
+local uci = require 'luci.model.uci'
+local ip = require 'luci.ip'
+
+local c = uci.cursor()
+
+
+c:delete('network', 'local_node_dev')
+c:section('network', 'device', 'local_node_dev',
+	  {
+		  name = 'local-node',
+		  ifname = 'br-client',
+		  type = 'macvlan',
+		  macaddr = site.next_node.mac,
+	  }
+)
+
+c:delete('network', 'local_node')
+c:section('network', 'interface', 'local_node',
+	  {
+		  ifname = 'local-node',
+		  proto = 'static',
+		  ipaddr = site.next_node.ip4,
+		  netmask = '255.255.255.255',
+		  ip6addr = site.next_node.ip6 .. '/128',
+	  }
+)
+
+local prefix4 = ip.IPv4(site.prefix4)
+c:delete('network', 'local_node_route4')
+c:section('network', 'route', 'local_node_route4',
+	  {
+		  interface = 'client',
+		  target = prefix4:network():string(),
+		  netmask = prefix4:mask():string(),
+		  gateway = '0.0.0.0',
+	  }
+)
+
+c:delete('network', 'local_node_route6')
+c:section('network', 'route6', 'local_node_route6',
+	  {
+		  interface = 'client',
+		  target = site.prefix6,
+		  gateway = '::',
+	  }
+)
+
+c:save('network')
+c:commit('network')
+
+c:delete('firewall', 'local_node')
+c:section('firewall', 'zone', 'local_node',
+	  {
+		  name = 'local_node',
+		  network = {'local_node'},
+		  input = 'ACCEPT',
+		  output = 'ACCEPT',
+		  forward = 'REJECT',
+	  }
+)
+c:save('firewall')
+c:commit('firewall')

package/gluon-next-node/generate/lib/gluon/upgrade/next-node/invariant/010-next-node

-#!/bin/sh
-
-. /lib/functions.sh
-
-
-uci_remove network local_node_dev
-uci_add network device local_node_dev
-uci_set network local_node_dev name 'local-node'
-uci_set network local_node_dev ifname 'br-client'
-uci_set network local_node_dev type 'macvlan'
-uci_set network local_node_dev macaddr '@next_node.mac@'
-
-uci_remove network local_node
-uci_add network interface local_node
-uci_set network local_node ifname 'local-node'
-uci_set network local_node proto 'static'
-uci_set network local_node ipaddr '@next_node.ip4@'
-uci_set network local_node netmask '255.255.255.255'
-uci_set network local_node ip6addr '@next_node.ip6@/128'
-
-eval $(ipcalc.sh '@prefix4@')
-
-uci_remove network local_node_route4
-uci_add network route local_node_route4
-uci_set network local_node_route4 interface 'client'
-uci_set network local_node_route4 target "$IP"
-uci_set network local_node_route4 netmask "$NETMASK"
-uci_set network local_node_route4 gateway '0.0.0.0'
-
-uci_remove network local_node_route6
-uci_add network route6 local_node_route6
-uci_set network local_node_route6 interface 'client'
-uci_set network local_node_route6 target '@prefix6@'
-uci_set network local_node_route6 gateway '::'
-
-uci_commit network
-
-uci_remove firewall local_node
-uci_add firewall zone local_node
-uci_set firewall local_node name 'local_node'
-uci add_list firewall.local_node.network='local_node'
-uci_set firewall local_node input 'ACCEPT'
-uci_set firewall local_node output 'ACCEPT'
-uci_set firewall local_node forward 'REJECT'
-uci_commit firewall