mirror of
https://github.com/JamesonHuang/OpenWrt_Luci_Lua.git
synced 2024-11-27 15:30:11 +00:00
88 lines
1.8 KiB
Lua
88 lines
1.8 KiB
Lua
--[[
|
|
LuCI - Lua Configuration Interface
|
|
|
|
Copyright 2008 Steven Barth <steven@midlink.org>
|
|
Copyright 2008 Jo-Philipp Wich <xm@leipzig.freifunk.net>
|
|
|
|
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
|
|
|
|
$Id$
|
|
]]--
|
|
|
|
local io = require "io"
|
|
local fs = require "nixio.fs"
|
|
local util = require "luci.util"
|
|
local nixio = require "nixio"
|
|
local debug = require "debug"
|
|
local string = require "string"
|
|
local package = require "package"
|
|
|
|
local type, loadfile = type, loadfile
|
|
|
|
|
|
module "luci.ccache"
|
|
|
|
function cache_ondemand(...)
|
|
if debug.getinfo(1, 'S').source ~= "=?" then
|
|
cache_enable(...)
|
|
end
|
|
end
|
|
|
|
function cache_enable(cachepath, mode)
|
|
cachepath = cachepath or "/tmp/luci-modulecache"
|
|
mode = mode or "r--r--r--"
|
|
|
|
local loader = package.loaders[2]
|
|
local uid = nixio.getuid()
|
|
|
|
if not fs.stat(cachepath) then
|
|
fs.mkdir(cachepath)
|
|
end
|
|
|
|
local function _encode_filename(name)
|
|
local encoded = ""
|
|
for i=1, #name do
|
|
encoded = encoded .. ("%2X" % string.byte(name, i))
|
|
end
|
|
return encoded
|
|
end
|
|
|
|
local function _load_sane(file)
|
|
local stat = fs.stat(file)
|
|
if stat and stat.uid == uid and stat.modestr == mode then
|
|
return loadfile(file)
|
|
end
|
|
end
|
|
|
|
local function _write_sane(file, func)
|
|
if nixio.getuid() == uid then
|
|
local fp = io.open(file, "w")
|
|
if fp then
|
|
fp:write(util.get_bytecode(func))
|
|
fp:close()
|
|
fs.chmod(file, mode)
|
|
end
|
|
end
|
|
end
|
|
|
|
package.loaders[2] = function(mod)
|
|
local encoded = cachepath .. "/" .. _encode_filename(mod)
|
|
local modcons = _load_sane(encoded)
|
|
|
|
if modcons then
|
|
return modcons
|
|
end
|
|
|
|
-- No cachefile
|
|
modcons = loader(mod)
|
|
if type(modcons) == "function" then
|
|
_write_sane(encoded, modcons)
|
|
end
|
|
return modcons
|
|
end
|
|
end
|