* 3rd Package reorgnaisation

[project/luci.git] / libs / core / src / model / uci / libuci.lua

diff --git a/libs/core/src/model/uci/libuci.lua b/libs/core/src/model/uci/libuci.lua
new file mode 100644 (file)
index 0000000..9a11125
--- /dev/null
+++ b/libs/core/src/model/uci/libuci.lua
@@ -0,0 +1,193 @@
+--[[
+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
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