libs/luanet/src/vconfig.c

   1 /*
   2  *  Licensed under the Apache License, Version 2.0 (the "License");
   3  *  you may not use this file except in compliance with the License.
   4  *  You may obtain a copy of the License at
   5  *
   6  *      http://www.apache.org/licenses/LICENSE-2.0
   7  *
   8  *  Unless required by applicable law or agreed to in writing, software
   9  *  distributed under the License is distributed on an "AS IS" BASIS,
  10  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  11  *  See the License for the specific language governing permissions and
  12  *  limitations under the License.
  13  *
  14  *   Copyright (C) 2008 John Crispin <blogic@openwrt.org>
  15  *   Copyright (C) 2008 Steven Barth <steven@midlink.org>
  16  */
  17
  18 #include <net/if.h>
  19 #include <net/if_arp.h>
  20 #include <net/route.h>
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <linux/sockios.h>
  25 #include <linux/if_vlan.h>
  26 #include <iwlib.h>
  27 #include <dirent.h>
  28 #include <sys/types.h>
  29 #include <sys/stat.h>
  30 #include <stdlib.h>
  31
  32 #include <lua.h>
  33 #include <lualib.h>
  34 #include <lauxlib.h>
  35
  36 extern int sock_ifconfig;
  37
  38
  39 static inline int _vlan_add(lua_State *L, int i)
  40 {
  41         struct vlan_ioctl_args ifr;
  42         int a = (i == ADD_VLAN_CMD)?(2):(1);
  43         char *ifname;
  44         if(lua_gettop(L) != a)
  45         {
  46                 lua_pushstring(L, "invalid arg list");
  47                 lua_error(L);
  48                 return 0;
  49         }
  50         ifname = (char *)lua_tostring (L, 1);
  51         ifr.cmd = i;
  52         if(i == ADD_VLAN_CMD)
  53                 ifr.u.VID = (int)lua_tointeger (L, 2);
  54         strncpy(ifr.device1, ifname, IFNAMSIZ);
  55         if(!ioctl(sock_ifconfig, SIOCSIFVLAN, &ifr))
  56                 lua_pushboolean(L, 1);
  57         else
  58                 lua_pushboolean(L, 0);
  59         return 1;
  60 }
  61
  62 int vlan_add(lua_State *L)
  63 {
  64         return _vlan_add(L, ADD_VLAN_CMD);
  65 }
  66
  67 int vlan_del(lua_State *L)
  68 {
  69         return _vlan_add(L, DEL_VLAN_CMD);
  70 }
  71
  72 int vlan_getall(lua_State *L)
  73 {
  74         struct dirent **namelist;
  75         int n = 0, i, count = 0;
  76         count = scandir("/proc/net/vlan/", &namelist, NULL, alphasort);
  77         if (count < 0)
  78                 return 0;
  79         lua_newtable(L);
  80         for (i = 0; i < count; i++)
  81         {
  82                 if(strcmp(namelist[i]->d_name, "config") && (*namelist[i]->d_name != '.'))
  83                 {
  84                         n++;
  85                         lua_pushinteger(L, n);
  86                         lua_pushstring(L, namelist[i]->d_name);
  87                         lua_settable(L, -3);
  88                 }
  89                 free(namelist[i]);
  90         }
  91         free(namelist);
  92         return 1;
  93 }