static int lua_sigar_netif_get_info(lua_State *L) {
lua_sigar_netif_t *netif = (lua_sigar_netif_t *)luaL_checkudata(L, 1, "sigar_netif");
int err;
const char *if_name = netif->netifs->netifs.data[netif->ndx];
sigar_net_interface_config_t usage;
if (SIGAR_OK != (err = sigar_net_interface_config_get(netif->netifs->sigar, if_name, &usage))) {
lua_pushnil(L);
lua_pushstring(L, strerror(err));
return 2;
}
lua_newtable(L);
#define DATA \
(&(usage))
LUA_EXPORT_STR(DATA, name);
LUA_EXPORT_STR(DATA, type);
LUA_EXPORT_ADDRESS(DATA, hwaddr);
LUA_EXPORT_ADDRESS(DATA, address);
LUA_EXPORT_ADDRESS(DATA, destination);
LUA_EXPORT_ADDRESS(DATA, broadcast);
LUA_EXPORT_ADDRESS(DATA, netmask);
LUA_EXPORT_INT(DATA, flags);
LUA_EXPORT_INT(DATA, mtu);
LUA_EXPORT_INT(DATA, metric);
#undef DATA
return 1;
}
static int sigar_netif_configured(sigar_t *sigar, char *name)
{
int status;
sigar_net_interface_config_t ifconfig;
status = sigar_net_interface_config_get(sigar, name, &ifconfig);
return status == SIGAR_OK;
}
sigar_net_interface_config_primary_get(sigar_t *sigar,
sigar_net_interface_config_t *ifconfig)
{
int i, status, found=0;
sigar_net_interface_list_t iflist;
sigar_net_interface_config_t possible_config;
possible_config.flags = 0;
if ((status = sigar_net_interface_list_get(sigar, &iflist)) != SIGAR_OK) {
return status;
}
for (i=0; i<iflist.number; i++) {
status = sigar_net_interface_config_get(sigar,
iflist.data[i], ifconfig);
if ((status != SIGAR_OK) ||
(ifconfig->flags & SIGAR_IFF_LOOPBACK) ||
!ifconfig->hwaddr.addr.in) /* no mac address */
{
continue;
}
if (!possible_config.flags) {
/* save for later for use if we're not connected to the net
* or all interfaces are aliases (e.g. solaris zone)
*/
memcpy(&possible_config, ifconfig, sizeof(*ifconfig));
}
if (!ifconfig->address.addr.in) {
continue; /* no ip address */
}
if (strchr(iflist.data[i], ':')) {
continue; /* alias */
}
found = 1;
break;
}
sigar_net_interface_list_destroy(sigar, &iflist);
if (found) {
return SIGAR_OK;
}
else if (possible_config.flags) {
memcpy(ifconfig, &possible_config, sizeof(*ifconfig));
return SIGAR_OK;
}
else {
return SIGAR_ENXIO;
}
}
