From 228cdef3584b9e8f99efc83c8251a34be85e5273 Mon Sep 17 00:00:00 2001
From: Jan-Tarek Butt <tarek@ring0.de>
Date: Fri, 24 Aug 2018 14:34:08 +0200
Subject: [PATCH] gluon-mesh-vpn-core: add abstraction layer for vpn interface
 return

---
 .../luasrc/usr/lib/lua/gluon/vpn-util.lua     | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 package/gluon-mesh-vpn-core/luasrc/usr/lib/lua/gluon/vpn-util.lua

diff --git a/package/gluon-mesh-vpn-core/luasrc/usr/lib/lua/gluon/vpn-util.lua b/package/gluon-mesh-vpn-core/luasrc/usr/lib/lua/gluon/vpn-util.lua
new file mode 100644
index 00000000..1a184e51
--- /dev/null
+++ b/package/gluon-mesh-vpn-core/luasrc/usr/lib/lua/gluon/vpn-util.lua
@@ -0,0 +1,24 @@
+local uci = require('simple-uci').cursor()
+local unistd = require 'posix.unistd'
+
+local M = {}
+
+function M.get_mesh_vpn_interface()
+  local ret = {}
+  if unistd.access('/lib/gluon/mesh-vpn/fastd') then
+    local vpnifac = uci:get('fastd', 'mesh_vpn_backbone', 'net')
+    if vpnifac  ~= nil then
+      vpnifac = vpnifac:gsub("%_",'-')
+      table.insert(ret,vpnifac)
+    end
+  end
+  if unistd.access('/lib/gluon/mesh-vpn/tunneldigger') then
+    local vpnifac = uci:get('tunneldigger', 'mesh_vpn', 'interface')
+    if vpnifac  ~= nil then
+      table.insert(ret,vpnifac)
+    end
+  end
+  return ret
+end
+
+return M