[Project] Add DKIM FFI interface

1 files changed, 51 insertions, 0 deletions

diff --git a/lualib/lua_ffi/init.lua b/lualib/lua_ffi/init.lua
new file mode 100644
index 000000000..657bad370
--- /dev/null
+++ b/lualib/lua_ffi/init.lua
@@ -0,0 +1,51 @@
+--[[
+Copyright (c) 2019, Vsevolod Stakhov <vsevolod@highsecure.ru>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+]]--
+
+--[[[
+-- @module lua_ffi
+-- This module contains ffi interfaces (requires luajit or lua-ffi)
+--]]
+
+local ffi
+
+local exports = {}
+
+if type(jit) == 'table' then
+  ffi = require "jit"
+  local NULL = ffi.new 'void*'
+
+  exports.is_null = function(o)
+    return o ~= NULL
+  end
+else
+  local ret,result_or_err = pcall(require, 'ffi')
+
+  if not ret then
+    io.stderr:write('FFI support is required: please use LuaJIT or install lua-ffi')
+    os.exit(1)
+  end
+
+  ffi = result_or_err
+  -- Lua ffi
+  local NULL = ffi.NULL or ffi.C.NULL
+  exports.is_null = function(o)
+    return o ~= NULL
+  end
+end
+
+exports.dkim = require "lua_ffi/dkim"
+
+return exports
\ No newline at end of file