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); }
/** * @details This helper method removes "fake" hosts from IPForensics::hosts_ * such as multicast and broadcast addresses. */ void IPForensics::clean_hosts(IPv4Address* net, IPv4Address *mask) { std::set<Host>::iterator it; for (it = hosts_.begin(); it != hosts_.end(); ) { Host host = *it; bool remove {false}; if (host.mac().fake() || host.ipv4().fake() || host.ipv6().fake()) { remove = true; } if (!host.ipv4().address().empty() && net != nullptr) { if (!host.ipv4().mask(*net, *mask)) { remove = true; } } if (remove) { hosts_.erase(it++); } else { ++it; } } }