libs/core/luasrc/model/network.lua

   1 --[[
   2 LuCI - Network model
   3
   4 Copyright 2009 Jo-Philipp Wich <xm@subsignal.org>
   5
   6 Licensed under the Apache License, Version 2.0 (the "License");
   7 you may not use this file except in compliance with the License.
   8 You may obtain a copy of the License at
   9
  10         http://www.apache.org/licenses/LICENSE-2.0
  11
  12 Unless required by applicable law or agreed to in writing, software
  13 distributed under the License is distributed on an "AS IS" BASIS,
  14 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 See the License for the specific language governing permissions and
  16 limitations under the License.
  17
  18 ]]--
  19
  20 local type, pairs, ipairs, table = type, pairs, ipairs, table
  21
  22 local lmo = require "lmo"
  23 local nxo = require "nixio"
  24 local iwi = require "iwinfo"
  25 local ipc = require "luci.ip"
  26 local utl = require "luci.util"
  27 local uct = require "luci.model.uci.bind"
  28
  29 module "luci.model.network"
  30
  31
  32 local ub = uct.bind("network")
  33 local ifs, brs
  34
  35 function init(cursor)
  36         if cursor then
  37                 cursor:unload("network")
  38                 cursor:load("network")
  39                 ub:init(cursor)
  40
  41                 ifs = { }
  42                 brs = { }
  43
  44                 -- read interface information
  45                 local n, i
  46                 for n, i in ipairs(nxo.getifaddrs()) do
  47                         local name = i.name:match("[^:]+")
  48
  49                         if not _M:ignore_interface(name) then
  50                                 ifs[name] = ifs[name] or {
  51                                         idx      = i.ifindex or n,
  52                                         name     = name,
  53                                         rawname  = i.name,
  54                                         flags    = { },
  55                                         ipaddrs  = { },
  56                                         ip6addrs = { }
  57                                 }
  58
  59                                 if i.family == "packet" then
  60                                         ifs[name].flags   = i.flags
  61                                         ifs[name].stats   = i.data
  62                                         ifs[name].macaddr = i.addr
  63                                 elseif i.family == "inet" then
  64                                         ifs[name].ipaddrs[#ifs[name].ipaddrs+1] = ipc.IPv4(i.addr, i.netmask)
  65                                 elseif i.family == "inet6" then
  66                                         ifs[name].ip6addrs[#ifs[name].ip6addrs+1] = ipc.IPv6(i.addr, i.netmask)
  67                                 end
  68                         end
  69                 end
  70
  71                 -- read bridge informaton
  72                 local b, l
  73                 for l in utl.execi("brctl show") do
  74                         if not l:match("STP") then
  75                                 local r = utl.split(l, "%s+", nil, true)
  76                                 if #r == 4 then
  77                                         b = {
  78                                                 name    = r[1],
  79                                                 id      = r[2],
  80                                                 stp     = r[3] == "yes",
  81                                                 ifnames = { ifs[r[4]] }
  82                                         }
  83                                         if b.ifnames[1] then
  84                                                 b.ifnames[1].bridge = b
  85                                         end
  86                                         brs[r[1]] = b
  87                                 elseif b then
  88                                         b.ifnames[#b.ifnames+1] = ifs[r[2]]
  89                                         b.ifnames[#b.ifnames].bridge = b
  90                                 end
  91                         end
  92                 end
  93         end
  94 end
  95
  96 function add_network(self, n, options)
  97         if n and #n > 0 and n:match("^[a-zA-Z0-9_]+$") and not self:get_network(n) then
  98                 if ub.uci:section("network", "interface", n, options) then
  99                         return network(n)
 100                 end
 101         end
 102 end
 103
 104 function get_network(self, n)
 105         if n and ub.uci:get("network", n) == "interface" then
 106                 return network(n)
 107         end
 108 end
 109
 110 function get_networks(self)
 111         local nets = { }
 112         ub.uci:foreach("network", "interface",
 113                 function(s)
 114                         nets[#nets+1] = network(s['.name'])
 115                 end)
 116         return nets
 117 end
 118
 119 function del_network(self, n)
 120         local r = ub.uci:delete("network", n)
 121         if r then
 122                 ub.uci:foreach("network", "alias",
 123                         function(s)
 124                                 if s.interface == n then
 125                                         ub.uci:delete("network", s['.name'])
 126                                 end
 127                         end)
 128                 ub.uci:foreach("network", "route",
 129                         function(s)
 130                                 if s.interface == n then
 131                                         ub.uci:delete("network", s['.name'])
 132                                 end
 133                         end)
 134                 ub.uci:foreach("network", "route6",
 135                         function(s)
 136                                 if s.interface == n then
 137                                         ub.uci:delete("network", s['.name'])
 138                                 end
 139                         end)
 140         end
 141         return r
 142 end
 143
 144 function rename_network(self, old, new)
 145         local r
 146         if new and #new > 0 and new:match("^[a-zA-Z0-9_]+$") and not self:get_network(new) then
 147                 r = ub.uci:section("network", "interface", new,
 148                         ub.uci:get_all("network", old))
 149
 150                 if r then
 151                         ub.uci:foreach("network", "alias",
 152                                 function(s)
 153                                         if s.interface == old then
 154                                                 ub.uci:set("network", s['.name'], "interface", new)
 155                                         end
 156                                 end)
 157                         ub.uci:foreach("network", "route",
 158                                 function(s)
 159                                         if s.interface == old then
 160                                                 ub.uci:set("network", s['.name'], "interface", new)
 161                                         end
 162                                 end)
 163                         ub.uci:foreach("network", "route6",
 164                                 function(s)
 165                                         if s.interface == old then
 166                                                 ub.uci:set("network", s['.name'], "interface", new)
 167                                         end
 168                                 end)
 169                 end
 170         end
 171         return r or false
 172 end
 173
 174 function get_interface(self, i)
 175         return ifs[i] and interface(i)
 176 end
 177
 178 function get_interfaces(self)
 179         local ifaces = { }
 180         local iface
 181         for iface, _ in pairs(ifs) do
 182                 ifaces[#ifaces+1] = interface(iface)
 183         end
 184         return ifaces
 185 end
 186
 187 function ignore_interface(self, x)
 188         return (x:match("^wmaster%d") or x:match("^wifi%d")
 189                 or x:match("^hwsim%d") or x:match("^imq%d") or x == "lo")
 190 end
 191
 192
 193 network = ub:section("interface")
 194 network:property("device")
 195 network:property("ifname")
 196 network:property("proto")
 197 network:property("type")
 198
 199 function network.name(self)
 200         return self.sid
 201 end
 202
 203 function network.is_bridge(self)
 204         return (self:type() == "bridge")
 205 end
 206
 207 function network.add_interface(self, ifname)
 208         if type(ifname) ~= "string" then
 209                 ifname = ifname:ifname()
 210         end
 211         if ifs[ifname] then
 212                 self:ifname(ub:list((self:ifname() or ''), ifname))
 213         end
 214 end
 215
 216 function network.del_interface(self, ifname)
 217         if type(ifname) ~= "string" then
 218                 ifname = ifname:ifname()
 219         end
 220         self:ifname(ub:list((self:ifname() or ''), nil, ifname))
 221 end
 222
 223 function network.get_interfaces(self)
 224         local ifaces = { }
 225         local iface
 226         for _, iface in ub:list(
 227                 (self:ifname() or '') .. ' ' .. (self:device() or '')
 228         ) do
 229                 iface = iface:match("[^:]+")
 230                 if ifs[iface] then
 231                         ifaces[#ifaces+1] = interface(iface)
 232                 end
 233         end
 234         return ifaces
 235 end
 236
 237 function contains_interface(self, iface)
 238         local i
 239         local ifaces = ub:list(
 240                 (self:ifname() or '') .. ' ' .. (self:device() or '')
 241         )
 242
 243         if type(iface) ~= "string" then
 244                 iface = iface:ifname()
 245         end
 246
 247         for _, i in ipairs(ifaces) do
 248                 if i == iface then
 249                         return true
 250                 end
 251         end
 252
 253         return false
 254 end
 255
 256
 257 interface = utl.class()
 258 function interface.__init__(self, ifname)
 259         if ifs[ifname] then
 260                 self.ifname = ifname
 261                 self.dev    = ifs[ifname]
 262                 self.br     = brs[ifname]
 263         end
 264 end
 265
 266 function interface.name(self)
 267         return self.ifname
 268 end
 269
 270 function interface.type(self)
 271         if iwi.type(self.ifname) and iwi.type(self.ifname) ~= "dummy" then
 272                 return "wifi"
 273         elseif brs[self.ifname] then
 274                 return "bridge"
 275         elseif self.ifname:match("%.") then
 276                 return "switch"
 277         else
 278                 return "ethernet"
 279         end
 280 end
 281
 282 function interface.ports(self)
 283         if self.br then
 284                 local iface
 285                 local ifaces = { }
 286                 for _, iface in ipairs(self.br.ifnames) do
 287                         ifaces[#ifaces+1] = interface(iface)
 288                 end
 289                 return ifaces
 290         end
 291 end
 292
 293 function interface.is_up(self)
 294         return self.dev.flags and self.dev.flags.up
 295 end
 296
 297 function interface.is_bridge(self)
 298         return (self:type() == "bridge")
 299 end
 300
 301 function interface.get_network(self)
 302         local net
 303         for _, net in ipairs(_M:get_networks()) do
 304                 if net:contains_interface(self.ifname) then
 305                         return net
 306                 end
 307         end
 308 end
 309