libs/core: add luci.model.network oop abstraction layer
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Jo-Philipp Wich
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309
libs/core/luasrc/model/network.lua
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309
libs/core/luasrc/model/network.lua
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--[[
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LuCI - Network model
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Copyright 2009 Jo-Philipp Wich <xm@subsignal.org>
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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]]--
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local type, pairs, ipairs, table = type, pairs, ipairs, table
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local lmo = require "lmo"
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local nxo = require "nixio"
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local iwi = require "iwinfo"
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local ipc = require "luci.ip"
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local utl = require "luci.util"
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local uct = require "luci.model.uci.bind"
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module "luci.model.network"
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local ub = uct.bind("network")
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local ifs, brs
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function init(cursor)
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if cursor then
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cursor:unload("network")
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cursor:load("network")
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ub:init(cursor)
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ifs = { }
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brs = { }
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-- read interface information
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local n, i
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for n, i in ipairs(nxo.getifaddrs()) do
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local name = i.name:match("[^:]+")
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if not _M:ignore_interface(name) then
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ifs[name] = ifs[name] or {
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idx = i.ifindex or n,
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name = name,
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rawname = i.name,
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flags = { },
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ipaddrs = { },
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ip6addrs = { }
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}
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if i.family == "packet" then
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ifs[name].flags = i.flags
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ifs[name].stats = i.data
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ifs[name].macaddr = i.addr
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elseif i.family == "inet" then
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ifs[name].ipaddrs[#ifs[name].ipaddrs+1] = ipc.IPv4(i.addr, i.netmask)
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elseif i.family == "inet6" then
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ifs[name].ip6addrs[#ifs[name].ip6addrs+1] = ipc.IPv6(i.addr, i.netmask)
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end
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end
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end
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-- read bridge informaton
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local b, l
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for l in utl.execi("brctl show") do
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if not l:match("STP") then
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local r = utl.split(l, "%s+", nil, true)
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if #r == 4 then
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b = {
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name = r[1],
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id = r[2],
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stp = r[3] == "yes",
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ifnames = { ifs[r[4]] }
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}
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if b.ifnames[1] then
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b.ifnames[1].bridge = b
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end
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brs[r[1]] = b
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elseif b then
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b.ifnames[#b.ifnames+1] = ifs[r[2]]
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b.ifnames[#b.ifnames].bridge = b
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end
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end
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end
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end
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end
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function add_network(self, n, options)
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if n and #n > 0 and n:match("^[a-zA-Z0-9_]+$") and not self:get_network(n) then
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if ub.uci:section("network", "interface", n, options) then
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return network(n)
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end
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end
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end
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function get_network(self, n)
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if n and ub.uci:get("network", n) == "interface" then
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return network(n)
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end
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end
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function get_networks(self)
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local nets = { }
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ub.uci:foreach("network", "interface",
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function(s)
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nets[#nets+1] = network(s['.name'])
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end)
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return nets
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end
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function del_network(self, n)
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local r = ub.uci:delete("network", n)
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if r then
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ub.uci:foreach("network", "alias",
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function(s)
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if s.interface == n then
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ub.uci:delete("network", s['.name'])
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end
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end)
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ub.uci:foreach("network", "route",
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function(s)
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if s.interface == n then
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ub.uci:delete("network", s['.name'])
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end
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end)
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ub.uci:foreach("network", "route6",
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function(s)
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if s.interface == n then
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ub.uci:delete("network", s['.name'])
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end
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end)
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end
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return r
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end
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function rename_network(self, old, new)
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local r
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if new and #new > 0 and new:match("^[a-zA-Z0-9_]+$") and not self:get_network(new) then
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r = ub.uci:section("network", "interface", new,
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ub.uci:get_all("network", old))
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if r then
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ub.uci:foreach("network", "alias",
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function(s)
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if s.interface == old then
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ub.uci:set("network", s['.name'], "interface", new)
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end
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end)
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ub.uci:foreach("network", "route",
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function(s)
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if s.interface == old then
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ub.uci:set("network", s['.name'], "interface", new)
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end
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end)
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ub.uci:foreach("network", "route6",
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function(s)
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if s.interface == old then
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ub.uci:set("network", s['.name'], "interface", new)
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end
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end)
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end
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end
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return r or false
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end
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function get_interface(self, i)
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return ifs[i] and interface(i)
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end
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function get_interfaces(self)
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local ifaces = { }
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local iface
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for iface, _ in pairs(ifs) do
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ifaces[#ifaces+1] = interface(iface)
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end
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return ifaces
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end
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function ignore_interface(self, x)
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return (x:match("^wmaster%d") or x:match("^wifi%d")
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or x:match("^hwsim%d") or x:match("^imq%d") or x == "lo")
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end
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network = ub:section("interface")
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network:property("device")
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network:property("ifname")
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network:property("proto")
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network:property("type")
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function network.name(self)
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return self.sid
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end
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function network.is_bridge(self)
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return (self:type() == "bridge")
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end
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function network.add_interface(self, ifname)
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if type(ifname) ~= "string" then
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ifname = ifname:ifname()
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end
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if ifs[ifname] then
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self:ifname(ub:list((self:ifname() or ''), ifname))
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end
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end
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function network.del_interface(self, ifname)
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if type(ifname) ~= "string" then
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ifname = ifname:ifname()
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end
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self:ifname(ub:list((self:ifname() or ''), nil, ifname))
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end
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function network.get_interfaces(self)
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local ifaces = { }
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local iface
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for _, iface in ub:list(
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(self:ifname() or '') .. ' ' .. (self:device() or '')
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) do
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iface = iface:match("[^:]+")
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if ifs[iface] then
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ifaces[#ifaces+1] = interface(iface)
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end
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end
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return ifaces
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end
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function contains_interface(self, iface)
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local i
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local ifaces = ub:list(
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(self:ifname() or '') .. ' ' .. (self:device() or '')
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)
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if type(iface) ~= "string" then
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iface = iface:ifname()
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end
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for _, i in ipairs(ifaces) do
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if i == iface then
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return true
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end
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end
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return false
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end
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interface = utl.class()
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function interface.__init__(self, ifname)
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if ifs[ifname] then
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self.ifname = ifname
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self.dev = ifs[ifname]
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self.br = brs[ifname]
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end
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end
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function interface.name(self)
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return self.ifname
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end
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function interface.type(self)
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if iwi.type(self.ifname) and iwi.type(self.ifname) ~= "dummy" then
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return "wifi"
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elseif brs[self.ifname] then
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return "bridge"
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elseif self.ifname:match("%.") then
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return "switch"
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else
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return "ethernet"
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end
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end
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function interface.ports(self)
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if self.br then
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local iface
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local ifaces = { }
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for _, iface in ipairs(self.br.ifnames) do
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ifaces[#ifaces+1] = interface(iface)
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end
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return ifaces
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end
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end
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function interface.is_up(self)
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return self.dev.flags and self.dev.flags.up
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end
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function interface.is_bridge(self)
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return (self:type() == "bridge")
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end
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function interface.get_network(self)
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local net
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for _, net in ipairs(_M:get_networks()) do
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if net:contains_interface(self.ifname) then
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return net
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end
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end
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end
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