std::string System::GetIpAddress()

in nodemanager/utils/System.cpp [106:144]

• 29 lines of code
• 11 McCabe index (conditional complexity)

std::string System::GetIpAddress(IpAddressVersion version, const std::string& name)
{
    ifaddrs *ifAddr = nullptr;
    bool isV4 = version == IpAddressVersion::V4;
    const int Family = isV4 ? AF_INET : AF_INET6;

    getifaddrs(&ifAddr);

    std::string ip;

    for (ifaddrs *i = ifAddr; i != nullptr; i = i->ifa_next)
    {
        if (!i->ifa_addr) continue;

        if (i->ifa_addr->sa_family == Family)
        {
            void* tmp = isV4 ?
                (void*)&((sockaddr_in*)i->ifa_addr)->sin_addr :
                (void*)&((sockaddr_in6*)i->ifa_addr)->sin6_addr;

            if ((name.empty() && std::string(i->ifa_name) == "lo:") ||
                std::string(i->ifa_name) != name)
            {
                continue;
            }

            const int BufferLength = isV4 ? INET_ADDRSTRLEN : INET6_ADDRSTRLEN;
            char buffer[BufferLength];
            inet_ntop(Family, tmp, buffer, BufferLength);

            ip = buffer;
       //     Logger::Debug("Found IPAddress {0}, name {1}", ip, name);
        }
    }

    if (ifAddr != nullptr) freeifaddrs(ifAddr);

    return std::move(ip);
}