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--[[
LuCI - UCI libuci wrapper
Description:
Wrapper for the libuci Lua bindings
FileId:
$Id$
License:
Copyright 2008 Steven Barth <steven@midlink.org>
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("luci.model.uci.libuci", package.seeall)
require("uci")
require("luci.util")
require("luci.sys")
-- Session class
Session = luci.util.class()
-- Session constructor
function Session.__init__(self, savedir)
self.ucicmd = savedir and "uci -P " .. savedir or "uci"
self.savedir = savedir or luci.model.uci.savedir
end
function Session.add(self, config, section_type)
return self:_uci("add " .. _path(config) .. " " .. _path(section_type))
end
function Session.changes(self, config)
return self:_uci("changes " .. _path(config))
end
function Session.commit(self, config)
self:t_load(config)
return self:t_commit(config)
end
function Session.del(self, config, section, option)
return self:_uci2("del " .. _path(config, section, option))
end
function Session.get(self, config, section, option)
self:t_load(config)
return self:t_get(config, section, option)
end
function Session.revert(self, config)
self:t_load(config)
return self:t_revert(config)
end
function Session.sections(self, config)
self:t_load(config)
return self:t_sections(config)
end
function Session.set(self, config, section, option, value)
self:t_load(config)
return self:t_set(config, section, option, value) and self:t_save(config)
end
function Session.synchronize(self)
return uci.set_savedir(self.savedir)
end
-- UCI-Transactions
function Session.t_load(self, config)
return self:synchronize() and uci.load(config)
end
function Session.t_save(self, config)
return uci.save(config)
end
function Session.t_add(self, config, type)
self:t_save(config)
local r = self:add(config, type)
self:t_load(config)
return r
end
function Session.t_commit(self, config)
return uci.commit(config)
end
function Session.t_del(self, config, section, option)
self:t_save(config)
local r = self:del(config, section, option)
self:t_load(config)
return r
end
function Session.t_get(self, config, section, option)
if option then
return uci.get(config, section, option)
else
return uci.get(config, section)
end
end
function Session.t_revert(self, config)
return uci.revert(config)
end
function Session.t_sections(self, config)
local raw = uci.get_all(config)
if not raw then
return nil
end
local s = {}
local o = {}
for i, sec in ipairs(raw) do
table.insert(o, sec.name)
s[sec.name] = sec.options
s[sec.name][".type"] = sec.type
end
return s, o
end
function Session.t_set(self, config, section, option, value)
if option then
return uci.set(config.."."..section.."."..option.."="..value)
else
return uci.set(config.."."..section.."="..value)
end
end
-- Internal functions --
function Session._uci(self, cmd)
local res = luci.sys.exec(self.ucicmd .. " 2>/dev/null " .. cmd)
if res:len() == 0 then
return nil
else
return res:sub(1, res:len()-1)
end
end
function Session._uci2(self, cmd)
local res = luci.sys.exec(self.ucicmd .. " 2>&1 " .. cmd)
if res:len() > 0 then
return false, res
else
return true
end
end
-- Build path (config.section.option=value) and prevent command injection
function _path(...)
local result = ""
-- Not using ipairs because it is not reliable in case of nil arguments
arg.n = nil
for k,v in pairs(arg) do
if v then
v = tostring(v)
if k == 1 then
result = "'" .. v:gsub("['.]", "") .. "'"
elseif k < 4 then
result = result .. ".'" .. v:gsub("['.]", "") .. "'"
elseif k == 4 then
result = result .. "='" .. v:gsub("'", "") .. "'"
end
end
end
return result
end
|
