gluon/package/gluon-legacy/luasrc/lib/gluon/upgrade/019-legacy-interfaces

#!/usr/bin/lua

local gluon_util = require 'gluon.util'
local platform = require 'gluon.platform'
local site = require 'gluon.site_config'
local sysconfig = require 'gluon.sysconfig'

local uci = require('luci.model.uci').cursor()
local util = require 'luci.util'


if sysconfig.gluon_version == 'legacy' then
  local function iface_exists(name)
    return (gluon_util.exec('ip', 'link', 'show', 'dev', (name:gsub('%..*$', ''))) == 0)
  end

  local function remove_bat0(iface)
    return util.trim(string.gsub(' ' .. iface .. ' ', ' bat0 ', ' '))
  end


  local lan_ifname = remove_bat0(uci:get('network', site.legacy.mesh_ifname, 'ifname'))
  local wan_ifname = uci:get('network', 'wan', 'ifname')

  if wan_ifname and iface_exists(wan_ifname) then
    sysconfig.wan_ifname = wan_ifname
    sysconfig.lan_ifname = lan_ifname
  else
    sysconfig.wan_ifname = lan_ifname
  end


  uci:delete('network', site.legacy.mesh_ifname)
  uci:delete('network', 'wan')

  uci:save('network')
end