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, i18n
  21         = type, pairs, ipairs, table, luci.i18n
  22
  23 local lmo = require "lmo"
  24 local nxo = require "nixio"
  25 local nfs = require "nixio.fs"
  26 local iwi = require "iwinfo"
  27 local ipc = require "luci.ip"
  28 local utl = require "luci.util"
  29 local uct = require "luci.model.uci.bind"
  30
  31 module "luci.model.network"
  32
  33
  34 local ub = uct.bind("network")
  35 local ifs, brs, sws
  36
  37 function init(cursor)
  38         if cursor then
  39                 cursor:unload("network")
  40                 cursor:load("network")
  41                 ub:init(cursor)
  42
  43                 ifs = { }
  44                 brs = { }
  45                 sws = { }
  46
  47                 -- read interface information
  48                 local n, i
  49                 for n, i in ipairs(nxo.getifaddrs()) do
  50                         local name = i.name:match("[^:]+")
  51                         local prnt = name:match("^([^%.]+)%.")
  52
  53                         if not _M:ignore_interface(name) then
  54                                 ifs[name] = ifs[name] or {
  55                                         idx      = i.ifindex or n,
  56                                         name     = name,
  57                                         rawname  = i.name,
  58                                         flags    = { },
  59                                         ipaddrs  = { },
  60                                         ip6addrs = { }
  61                                 }
  62
  63                                 if prnt then
  64                                         sws[name] = true
  65                                         sws[prnt] = true
  66                                 end
  67
  68                                 if i.family == "packet" then
  69                                         ifs[name].flags   = i.flags
  70                                         ifs[name].stats   = i.data
  71                                         ifs[name].macaddr = i.addr
  72                                 elseif i.family == "inet" then
  73                                         ifs[name].ipaddrs[#ifs[name].ipaddrs+1] = ipc.IPv4(i.addr, i.netmask)
  74                                 elseif i.family == "inet6" then
  75                                         ifs[name].ip6addrs[#ifs[name].ip6addrs+1] = ipc.IPv6(i.addr, i.netmask)
  76                                 end
  77                         end
  78                 end
  79
  80                 -- read bridge informaton
  81                 local b, l
  82                 for l in utl.execi("brctl show") do
  83                         if not l:match("STP") then
  84                                 local r = utl.split(l, "%s+", nil, true)
  85                                 if #r == 4 then
  86                                         b = {
  87                                                 name    = r[1],
  88                                                 id      = r[2],
  89                                                 stp     = r[3] == "yes",
  90                                                 ifnames = { ifs[r[4]] }
  91                                         }
  92                                         if b.ifnames[1] then
  93                                                 b.ifnames[1].bridge = b
  94                                         end
  95                                         brs[r[1]] = b
  96                                 elseif b then
  97                                         b.ifnames[#b.ifnames+1] = ifs[r[2]]
  98                                         b.ifnames[#b.ifnames].bridge = b
  99                                 end
 100                         end
 101                 end
 102         end
 103 end
 104
 105 function has_ipv6(self)
 106         return nfs.access("/proc/net/ipv6_route")
 107 end
 108
 109 function add_network(self, n, options)
 110         if n and #n > 0 and n:match("^[a-zA-Z0-9_]+$") and not self:get_network(n) then
 111                 if ub.uci:section("network", "interface", n, options) then
 112                         return network(n)
 113                 end
 114         end
 115 end
 116
 117 function get_network(self, n)
 118         if n and ub.uci:get("network", n) == "interface" then
 119                 return network(n)
 120         end
 121 end
 122
 123 function get_networks(self)
 124         local nets = { }
 125         ub.uci:foreach("network", "interface",
 126                 function(s)
 127                         nets[#nets+1] = network(s['.name'])
 128                 end)
 129         return nets
 130 end
 131
 132 function del_network(self, n)
 133         local r = ub.uci:delete("network", n)
 134         if r then
 135                 ub.uci:foreach("network", "alias",
 136                         function(s)
 137                                 if s.interface == n then
 138                                         ub.uci:delete("network", s['.name'])
 139                                 end
 140                         end)
 141                 ub.uci:foreach("network", "route",
 142                         function(s)
 143                                 if s.interface == n then
 144                                         ub.uci:delete("network", s['.name'])
 145                                 end
 146                         end)
 147                 ub.uci:foreach("network", "route6",
 148                         function(s)
 149                                 if s.interface == n then
 150                                         ub.uci:delete("network", s['.name'])
 151                                 end
 152                         end)
 153         end
 154         return r
 155 end
 156
 157 function rename_network(self, old, new)
 158         local r
 159         if new and #new > 0 and new:match("^[a-zA-Z0-9_]+$") and not self:get_network(new) then
 160                 r = ub.uci:section("network", "interface", new,
 161                         ub.uci:get_all("network", old))
 162
 163                 if r then
 164                         ub.uci:foreach("network", "alias",
 165                                 function(s)
 166                                         if s.interface == old then
 167                                                 ub.uci:set("network", s['.name'], "interface", new)
 168                                         end
 169                                 end)
 170                         ub.uci:foreach("network", "route",
 171                                 function(s)
 172                                         if s.interface == old then
 173                                                 ub.uci:set("network", s['.name'], "interface", new)
 174                                         end
 175                                 end)
 176                         ub.uci:foreach("network", "route6",
 177                                 function(s)
 178                                         if s.interface == old then
 179                                                 ub.uci:set("network", s['.name'], "interface", new)
 180                                         end
 181                                 end)
 182                 end
 183         end
 184         return r or false
 185 end
 186
 187 function get_interface(self, i)
 188         return ifs[i] and interface(i)
 189 end
 190
 191 function get_interfaces(self)
 192         local ifaces = { }
 193         local iface
 194         for iface, _ in pairs(ifs) do
 195                 ifaces[#ifaces+1] = interface(iface)
 196         end
 197         return ifaces
 198 end
 199
 200 function ignore_interface(self, x)
 201         return (x:match("^wmaster%d") or x:match("^wifi%d")
 202                 or x:match("^hwsim%d") or x:match("^imq%d") or x == "lo")
 203 end
 204
 205
 206 network = ub:section("interface")
 207 network:property("device")
 208 network:property("ifname")
 209 network:property("proto")
 210 network:property("type")
 211
 212 function network.name(self)
 213         return self.sid
 214 end
 215
 216 function network.is_bridge(self)
 217         return (self:type() == "bridge")
 218 end
 219
 220 function network.add_interface(self, ifname)
 221         if type(ifname) ~= "string" then
 222                 ifname = ifname:name()
 223         end
 224         if ifs[ifname] then
 225                 self:ifname(ub:list((self:ifname() or ''), ifname))
 226         end
 227 end
 228
 229 function network.del_interface(self, ifname)
 230         if type(ifname) ~= "string" then
 231                 ifname = ifname:name()
 232         end
 233         self:ifname(ub:list((self:ifname() or ''), nil, ifname))
 234 end
 235
 236 function network.get_interfaces(self)
 237         local ifaces = { }
 238         local iface
 239         for _, iface in ipairs(ub:list(self:ifname())) do
 240                 iface = iface:match("[^:]+")
 241                 if ifs[iface] then
 242                         ifaces[#ifaces+1] = interface(iface)
 243                 end
 244         end
 245         return ifaces
 246 end
 247
 248 function network.contains_interface(self, iface)
 249         local i
 250         local ifaces = ub:list(self:ifname())
 251
 252         if type(iface) ~= "string" then
 253                 iface = iface:name()
 254         end
 255
 256         for _, i in ipairs(ifaces) do
 257                 if i == iface then
 258                         return true
 259                 end
 260         end
 261
 262         return false
 263 end
 264
 265
 266 interface = utl.class()
 267 function interface.__init__(self, ifname)
 268         if ifs[ifname] then
 269                 self.ifname = ifname
 270                 self.dev    = ifs[ifname]
 271                 self.br     = brs[ifname]
 272         end
 273 end
 274
 275 function interface.name(self)
 276         return self.ifname
 277 end
 278
 279 function interface.mac(self)
 280         return self.dev.macaddr or "00:00:00:00:00:00"
 281 end
 282
 283 function interface.ipaddrs(self)
 284         return self.dev.ipaddrs or { }
 285 end
 286
 287 function interface.ip6addrs(self)
 288         return self.dev.ip6addrs or { }
 289 end
 290
 291 function interface.type(self)
 292         if iwi.type(self.ifname) and iwi.type(self.ifname) ~= "dummy" then
 293                 return "wifi"
 294         elseif brs[self.ifname] then
 295                 return "bridge"
 296         elseif sws[self.ifname] or self.ifname:match("%.") then
 297                 return "switch"
 298         else
 299                 return "ethernet"
 300         end
 301 end
 302
 303 function interface.get_type_i18n(self)
 304         local x = self:type()
 305         if x == "wifi" then
 306                 return i18n.translate("a_s_if_wifidev", "Wireless Adapter")
 307         elseif x == "bridge" then
 308                 return i18n.translate("a_s_if_bridge", "Bridge")
 309         elseif x == "switch" then
 310                 return i18n.translate("a_s_if_ethswitch", "Ethernet Switch")
 311         else
 312                 return i18n.translate("a_s_if_ethdev", "Ethernet Adapter")
 313         end
 314 end
 315
 316 function interface.ports(self)
 317         if self.br then
 318                 local iface
 319                 local ifaces = { }
 320                 for _, iface in ipairs(self.br.ifnames) do
 321                         ifaces[#ifaces+1] = interface(iface.name)
 322                 end
 323                 return ifaces
 324         end
 325 end
 326
 327 function interface.bridge_id(self)
 328         if self.br then
 329                 return self.br.id
 330         else
 331                 return nil
 332         end
 333 end
 334
 335 function interface.bridge_stp(self)
 336         if self.br then
 337                 return self.br.stp
 338         else
 339                 return false
 340         end
 341 end
 342
 343 function interface.is_up(self)
 344         return self.dev.flags and self.dev.flags.up
 345 end
 346
 347 function interface.is_bridge(self)
 348         return (self:type() == "bridge")
 349 end
 350
 351 function interface.is_bridgeport(self)
 352         return self.dev and self.dev.bridge and true or false
 353 end
 354
 355 function interface.tx_bytes(self)
 356         return self.dev and self.dev.stats
 357                 and self.dev.stats.tx_bytes or 0
 358 end
 359
 360 function interface.rx_bytes(self)
 361         return self.dev and self.dev.stats
 362                 and self.dev.stats.rx_bytes or 0
 363 end
 364
 365 function interface.tx_packets(self)
 366         return self.dev and self.dev.stats
 367                 and self.dev.stats.tx_packets or 0
 368 end
 369
 370 function interface.rx_packets(self)
 371         return self.dev and self.dev.stats
 372                 and self.dev.stats.rx_packets or 0
 373 end
 374
 375 function interface.get_network(self)
 376         if not self.network then
 377                 local net
 378                 for _, net in ipairs(_M:get_networks()) do
 379                         if net:contains_interface(self.ifname) then
 380                                 self.network = net
 381                                 return net
 382                         end
 383                 end
 384         else
 385                 return self.network
 386         end
 387 end
 388