void EnvironmentImpl::nodeIdImpl(NodeId& id)
{
std::memset(&id, 0, sizeof(id));
int ifIndex = 0;
char ifName[32];
char ifAddr[4];
int s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
if (s == -1) return;
for (;;)
{
if (ifIndexToIfName(ifIndex, ifName) == OK)
{
if (ifAddrGet(ifName, ifAddr) == OK)
{
struct arpreq ar;
std::memset(&ar, 0, sizeof(ar));
struct sockaddr_in* pAddr = reinterpret_cast<struct sockaddr_in*>(&ar.arp_pa);
pAddr->sin_family = AF_INET;
std::memcpy(&pAddr->sin_addr, ifAddr, sizeof(struct in_addr));
int rc = ioctl(s, SIOCGARP, reinterpret_cast<int>(&ar));
if (rc < 0) continue;
std::memcpy(&id, ar.arp_ha.sa_data, sizeof(id));
close(s);
return;
}
}
else break;
}
close(s);
throw SystemException("cannot get Ethernet hardware address");
}
void EnvironmentImpl::nodeIdImpl(NodeId& id)
{
std::memset(&id, 0, sizeof(id));
int ifIndex = 1;
char ifName[32];
for (;;)
{
if (ifIndexToIfName(ifIndex, ifName) == OK)
{
struct ifnet* pIf = ifunit(ifName);
if (pIf)
{
std::memcpy(&id, ((struct arpcom *) pIf)->ac_enaddr, sizeof(id));
return;
}
}
else break;
++ifIndex;
}
throw SystemException("cannot get Ethernet hardware address");
}
