C++ QNetworkAddressEntry::setPrefixLength方法代码示例

void tst_QNetworkAddressEntry::prefixAndNetmask()
{
    QFETCH(QHostAddress, ip);
    QFETCH(QHostAddress, netmask);
    QFETCH(int, prefix);

    QNetworkAddressEntry entry;

    // first, without setting the IP, all must be invalid:
    entry.setNetmask(netmask);
    QVERIFY(entry.netmask().isNull());
    entry.setPrefixLength(prefix);
    QCOMPARE(entry.prefixLength(), -1);

    // set the IP:
    entry.setIp(ip);

    // set the netmask:
    if (!netmask.isNull()) {
        entry.setNetmask(netmask);

        // was it a valid one?
        if (prefix != -1) {
            QVERIFY(!entry.netmask().isNull());
            QCOMPARE(entry.netmask(), netmask);
            QCOMPARE(entry.prefixLength(), prefix);
        } else {
            // not valid
            QVERIFY(entry.netmask().isNull());
            QCOMPARE(entry.prefixLength(), -1);
        }
    }
    entry.setNetmask(QHostAddress());
    QVERIFY(entry.netmask().isNull());
    QCOMPARE(entry.prefixLength(), -1);

    // set the prefix
    if (prefix != -1) {
        entry.setPrefixLength(prefix);

        // was it a valid one?
        if (!netmask.isNull()) {
            QVERIFY(!entry.netmask().isNull());
            QCOMPARE(entry.netmask(), netmask);
            QCOMPARE(entry.prefixLength(), prefix);
        } else {
            // not valid
            QVERIFY(entry.netmask().isNull());
            QCOMPARE(entry.prefixLength(), -1);
        }
    }
    entry.setPrefixLength(-1);
    QVERIFY(entry.netmask().isNull());
    QCOMPARE(entry.prefixLength(), -1);
}

static QList<QNetworkInterfacePrivate *> interfaceListing()
{
    TInt err(KErrNone);
    QList<QNetworkInterfacePrivate *> interfaces;
    QList<QHostAddress> addressesWithEstimatedNetmasks;

    // Open dummy socket for interface queries
    RSocket socket;
    err = socket.Open(qt_symbianGetSocketServer(), _L("udp"));
    if (err) {
        return interfaces;
    }

    // Ask socket to start enumerating interfaces
    err =  socket.SetOpt(KSoInetEnumInterfaces, KSolInetIfCtrl);
    if (err) {
        socket.Close();
        return interfaces;
    }

    int ifindex = 0;
    TPckgBuf<TSoInetInterfaceInfo> infoPckg;
    TSoInetInterfaceInfo &info = infoPckg();
    while (socket.GetOpt(KSoInetNextInterface, KSolInetIfCtrl, infoPckg) == KErrNone) {
        if (info.iName != KNullDesC) {
            TName address;
            QNetworkAddressEntry entry;
            QNetworkInterfacePrivate *iface = 0;

            iface = new QNetworkInterfacePrivate;
            iface->index = ifindex++;
            interfaces << iface;
            iface->name = qt_TDesC2QString(info.iName);
            iface->flags = convertFlags(info);

            if (/*info.iFeatures&KIfHasHardwareAddr &&*/ info.iHwAddr.Family() != KAFUnspec) {
                for (TInt i = sizeof(SSockAddr); i < sizeof(SSockAddr) + info.iHwAddr.GetUserLen(); i++) {
                    address.AppendNumFixedWidth(info.iHwAddr[i], EHex, 2);
                    if ((i + 1) < sizeof(SSockAddr) + info.iHwAddr.GetUserLen())
                        address.Append(_L(":"));
                }
                address.UpperCase();
                iface->hardwareAddress = qt_TDesC2QString(address);
            }

            // Get the address of the interface
            entry.setIp(qt_QHostAddressFromTInetAddr(info.iAddress));

#if defined(QNETWORKINTERFACE_DEBUG)
            qDebug() << "address is" << info.iAddress.Family() << entry.ip();
            qDebug() << "netmask is" << info.iNetMask.Family() << qt_QHostAddressFromTInetAddr( info.iNetMask );
#endif

            // Get the interface netmask
            if (info.iNetMask.IsUnspecified()) {
                // For some reason netmask is always 0.0.0.0 for IPv4 interfaces
                // and loopback interfaces (which we statically know)
                if (info.iAddress.IsV4Mapped()) {
                    if (info.iFeatures & KIfIsLoopback) {
                        entry.setPrefixLength(32);
                    } else {
                        // Workaround: Let Symbian determine netmask based on IP address class (IPv4 only API)
                        TInetAddr netmask;
                        netmask.NetMask(info.iAddress);
                        entry.setNetmask(QHostAddress(netmask.Address())); //binary convert v4 address
                        addressesWithEstimatedNetmasks << entry.ip();
#if defined(QNETWORKINTERFACE_DEBUG)
                        qDebug() << "address class determined netmask" << entry.netmask();
#endif
                    }
                } else {
                    // For IPv6 interfaces
                    if (info.iFeatures & KIfIsLoopback) {
                        entry.setPrefixLength(128);
                    } else if (info.iNetMask.IsUnspecified()) {
                        //Don't see this error for IPv6, but try to handle it if it happens
                        entry.setPrefixLength(64); //most common
#if defined(QNETWORKINTERFACE_DEBUG)
                        qDebug() << "total guess netmask" << entry.netmask();
#endif
                        addressesWithEstimatedNetmasks << entry.ip();
                    }
                }
            } else {
                //Expected code path for IPv6 non loopback interfaces (IPv4 could come here if symbian is fixed)
                entry.setNetmask(qt_QHostAddressFromTInetAddr(info.iNetMask));
#if defined(QNETWORKINTERFACE_DEBUG)
                qDebug() << "reported netmask" << entry.netmask();
#endif
            }

            // broadcast address is determined from the netmask in postProcess()

            // Add new entry to interface address entries
            iface->addressEntries << entry;

#if defined(QNETWORKINTERFACE_DEBUG)
            qDebug("\n       Found network interface %s, interface flags:\n\
                IsUp = %d, IsRunning = %d, CanBroadcast = %d,\n\
                IsLoopBack = %d, IsPointToPoint = %d, CanMulticast = %d, \n\
//.........这里部分代码省略.........

static QList<QNetworkInterfacePrivate *> interfaceListingWinXP()
{
    QList<QNetworkInterfacePrivate *> interfaces;
    IP_ADAPTER_ADDRESSES staticBuf[2]; // 2 is arbitrary
    PIP_ADAPTER_ADDRESSES pAdapter = staticBuf;
    ULONG bufSize = sizeof staticBuf;

    const QHash<QHostAddress, QHostAddress> &ipv4netmasks = ipv4Netmasks();
    ULONG flags = GAA_FLAG_INCLUDE_PREFIX |
                  GAA_FLAG_SKIP_DNS_SERVER |
                  GAA_FLAG_SKIP_MULTICAST;
    ULONG retval = ptrGetAdaptersAddresses(AF_UNSPEC, flags, NULL, pAdapter, &bufSize);
    if (retval == ERROR_BUFFER_OVERFLOW) {
        // need more memory
        pAdapter = (IP_ADAPTER_ADDRESSES *)malloc(bufSize);
        if (!pAdapter)
            return interfaces;
        // try again
        if (ptrGetAdaptersAddresses(AF_UNSPEC, flags, NULL, pAdapter, &bufSize) != ERROR_SUCCESS) {
            free(pAdapter);
            return interfaces;
        }
    } else if (retval != ERROR_SUCCESS) {
        // error
        return interfaces;
    }

    // iterate over the list and add the entries to our listing
    for (PIP_ADAPTER_ADDRESSES ptr = pAdapter; ptr; ptr = ptr->Next) {
        QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
        interfaces << iface;

        iface->index = 0;
        if (ptr->Length >= offsetof(IP_ADAPTER_ADDRESSES, Ipv6IfIndex) && ptr->Ipv6IfIndex != 0)
            iface->index = ptr->Ipv6IfIndex;
        else if (ptr->IfIndex != 0)
            iface->index = ptr->IfIndex;

        iface->flags = QNetworkInterface::CanBroadcast;
        if (ptr->OperStatus == IfOperStatusUp)
            iface->flags |= QNetworkInterface::IsUp | QNetworkInterface::IsRunning;
        if ((ptr->Flags & IP_ADAPTER_NO_MULTICAST) == 0)
            iface->flags |= QNetworkInterface::CanMulticast;
        if (ptr->IfType == IF_TYPE_PPP)
            iface->flags |= QNetworkInterface::IsPointToPoint;

        iface->name = QString::fromLocal8Bit(ptr->AdapterName);
        iface->friendlyName = QString::fromWCharArray(ptr->FriendlyName);
        if (ptr->PhysicalAddressLength)
            iface->hardwareAddress = iface->makeHwAddress(ptr->PhysicalAddressLength,
                                                          ptr->PhysicalAddress);
        else
            // loopback if it has no address
            iface->flags |= QNetworkInterface::IsLoopBack;

        // The GetAdaptersAddresses call has an interesting semantic:
        // It can return a number N of addresses and a number M of prefixes.
        // But if you have IPv6 addresses, generally N > M.
        // I cannot find a way to relate the Address to the Prefix, aside from stopping
        // the iteration at the last Prefix entry and assume that it applies to all addresses
        // from that point on.
        PIP_ADAPTER_PREFIX pprefix = 0;
        if (ptr->Length >= offsetof(IP_ADAPTER_ADDRESSES, FirstPrefix))
            pprefix = ptr->FirstPrefix;
        for (PIP_ADAPTER_UNICAST_ADDRESS addr = ptr->FirstUnicastAddress; addr; addr = addr->Next) {
            QNetworkAddressEntry entry;
            entry.setIp(addressFromSockaddr(addr->Address.lpSockaddr));
            if (pprefix) {
                if (entry.ip().protocol() == QAbstractSocket::IPv4Protocol) {
                    entry.setNetmask(ipv4netmasks[entry.ip()]);

                    // broadcast address is set on postProcess()
                } else { //IPV6
                    entry.setPrefixLength(pprefix->PrefixLength);
                }
                pprefix = pprefix->Next ? pprefix->Next : pprefix;
            }
            iface->addressEntries << entry;
        }
    }

    if (pAdapter != staticBuf)
        free(pAdapter);

    return interfaces;
}

static QList<QNetworkInterfacePrivate *> interfaceListing()
{
    QList<QNetworkInterfacePrivate *> interfaces;

    QList<HostNameInfo> hostList;

    ComPtr<INetworkInformationStatics> hostNameStatics;
    GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Connectivity_NetworkInformation).Get(), &hostNameStatics);

    ComPtr<IVectorView<HostName *>> hostNames;
    hostNameStatics->GetHostNames(&hostNames);
    if (!hostNames)
        return interfaces;

    unsigned int hostNameCount;
    hostNames->get_Size(&hostNameCount);
    for (unsigned i = 0; i < hostNameCount; ++i) {
        HostNameInfo hostInfo;
        ComPtr<IHostName> hostName;
        hostNames->GetAt(i, &hostName);

        HostNameType type;
        hostName->get_Type(&type);
        if (type == HostNameType_DomainName)
            continue;

        ComPtr<IIPInformation> ipInformation;
        hostName->get_IPInformation(&ipInformation);
        ComPtr<INetworkAdapter> currentAdapter;
        ipInformation->get_NetworkAdapter(&currentAdapter);

        currentAdapter->get_NetworkAdapterId(&hostInfo.adapterId);

        ComPtr<IReference<unsigned char>> prefixLengthReference;
        ipInformation->get_PrefixLength(&prefixLengthReference);

        prefixLengthReference->get_Value(&hostInfo.prefixLength);

        // invalid prefixes
        if ((type == HostNameType_Ipv4 && hostInfo.prefixLength > 32)
                || (type == HostNameType_Ipv6 && hostInfo.prefixLength > 128))
            continue;

        HString name;
        hostName->get_CanonicalName(name.GetAddressOf());
        UINT32 length;
        PCWSTR rawString = name.GetRawBuffer(&length);
        hostInfo.address = QString::fromWCharArray(rawString, length);

        hostList << hostInfo;
    }

    INetworkInformationStatics *networkInfoStatics;
    GetActivationFactory(HString::MakeReference(RuntimeClass_Windows_Networking_Connectivity_NetworkInformation).Get(), &networkInfoStatics);
    ComPtr<IVectorView<ConnectionProfile *>> connectionProfiles;
    networkInfoStatics->GetConnectionProfiles(&connectionProfiles);
    if (!connectionProfiles)
        return interfaces;

    unsigned int size;
    connectionProfiles->get_Size(&size);
    for (unsigned int i = 0; i < size; ++i) {
        QNetworkInterfacePrivate *iface = new QNetworkInterfacePrivate;
        interfaces << iface;

        ComPtr<IConnectionProfile> profile;
        connectionProfiles->GetAt(i, &profile);

        NetworkConnectivityLevel connectivityLevel;
        profile->GetNetworkConnectivityLevel(&connectivityLevel);
        if (connectivityLevel != NetworkConnectivityLevel_None)
            iface->flags = QNetworkInterface::IsUp | QNetworkInterface::IsRunning;

        ComPtr<INetworkAdapter> adapter;
        profile->get_NetworkAdapter(&adapter);
        UINT32 type;
        adapter->get_IanaInterfaceType(&type);
        if (type == 23)
            iface->flags |= QNetworkInterface::IsPointToPoint;
        GUID id;
        adapter->get_NetworkAdapterId(&id);
        OLECHAR adapterName[39]={0};
        StringFromGUID2(id, adapterName, 39);
        iface->name = QString::fromWCharArray(adapterName);

        // According to http://stackoverflow.com/questions/12936193/how-unique-is-the-ethernet-network-adapter-id-in-winrt-it-is-derived-from-the-m
        // obtaining the MAC address using WinRT API is impossible
        // iface->hardwareAddress = ?

        for (int i = 0; i < hostList.length(); ++i) {
            const HostNameInfo hostInfo = hostList.at(i);
            if (id != hostInfo.adapterId)
                continue;

            QNetworkAddressEntry entry;
            entry.setIp(QHostAddress(hostInfo.address));
            entry.setPrefixLength(hostInfo.prefixLength);
            iface->addressEntries << entry;

            hostList.takeAt(i);
//.........这里部分代码省略.........