Example #1
0
void IPForensics::update_host(std::set<Host>::iterator it, IPv4Address ipv4,
                              IPv6Address ipv6) {
  Host h = *it;
  if (h.ipv4().address().empty() && !ipv4.address().empty()) {
    h.set_ipv4(ipv4);
  }
  if (h.ipv6().address().empty() && !ipv6.address().empty()) {
    h.set_ipv6(ipv6);
  }
  // replace previous IPv6 address if it is link-local
  if (!h.ipv6().address().empty() && !ipv6.address().empty()) {
    if (h.ipv6().address()[0] == ipf::kLinkLocalIPv6[0] &&
        h.ipv6().address()[1] == ipf::kLinkLocalIPv6[1] &&
        ipv6.address()[0] != ipf::kLinkLocalIPv6[0] &&
        ipv6.address()[1] != ipf::kLinkLocalIPv6[1]) {
      h.set_ipv6(ipv6);
    }
  }
  hosts_.erase(it);
  hosts_.insert(h);
}