template<typename... Args> explicit
tuntap_base(const Args&... args)
: super(args...),
m_interface(kwget(interface, tuntap_default_name, args...)),
m_type_str(kwget(type, tuntap_default_type, args...)),
m_type(iface_type())
{
create();
read_mtu();
}
const char *first_eth_interface(const net_type_t type) {
static char *interface = NULL;
struct ifaddrs *ifaddr, *addrp;
net_type_t iftype;
getifaddrs(&ifaddr);
if (ifaddr == NULL)
return NULL;
free(interface);
interface = NULL;
for (addrp = ifaddr;
addrp != NULL;
addrp = addrp->ifa_next) {
if (strncasecmp("lo", addrp->ifa_name, strlen("lo")) == 0)
continue;
if (addrp->ifa_addr == NULL)
continue;
// Skip PF_PACKET addresses (MAC addresses), as they are present on any
// ethernet interface.
if (addrp->ifa_addr->sa_family != AF_INET &&
addrp->ifa_addr->sa_family != AF_INET6)
continue;
// Skip this interface if it is a wireless interface.
iftype = iface_type(addrp->ifa_name);
if (iftype != type)
continue;
interface = strdup(addrp->ifa_name);
break;
}
freeifaddrs(ifaddr);
return interface;
}
