C++ QHostAddress::toIPv6Address方法代码示例

bool LimitedSocket::bindSocket(QAbstractSocket* sock, QHostAddress addr)
{
	if(addr.isNull())
		return true;
	
	int error;
	
	if(addr.protocol() == QAbstractSocket::IPv4Protocol)
	{
		sockaddr_in in;
		
		memset(&in, 0, sizeof(in));
		in.sin_addr.s_addr = addr.toIPv4Address();
		in.sin_family = AF_INET;
		
		error = ::bind(sock->socketDescriptor(), (sockaddr*) &in, sizeof(in));
	}
	else
	{
		sockaddr_in6 in6;
		
		Q_IPV6ADDR a = addr.toIPv6Address();
		memset(&in6, 0, sizeof(in6));
		memcpy(in6.sin6_addr.s6_addr, a.c, 16);
		in6.sin6_family = AF_INET6;
		
		error = ::bind(sock->socketDescriptor(), (sockaddr*) &in6, sizeof(in6));
	}
	
	return !error;
}

  bool SocksConnection::SerializeSocksAddress(const QString &host,
      quint16 port, QByteArray &socks_addr)
  {
    socks_addr.clear();
    QDataStream stream(&socks_addr, QIODevice::WriteOnly);

    QHostAddress addr;
    if(addr.setAddress(host)) {
      switch(addr.protocol()) {
        case QAbstractSocket::IPv4Protocol:
          stream << static_cast<quint8>(SocksAddress_IPv4);
          stream << addr.toIPv4Address();
          break;
        case QAbstractSocket::IPv6Protocol:
          stream << static_cast<quint8>(SocksAddress_IPv6);
          stream.writeRawData(reinterpret_cast<const char *>
              (addr.toIPv6Address().c), 16);
          break;
        default:
          stream << static_cast<quint8>(SocksAddress_Illegal);
      }
    } else {
      stream << static_cast<quint8>(SocksAddress_DomainName);
      stream << static_cast<quint8>(host.size());
      stream.writeRawData(host.toUtf8().constData(), host.size());
    }

    stream << port;
    return true;
  }

void setPortAndAddress(quint16 port, const QHostAddress &address, QAbstractSocket::NetworkLayerProtocol socketProtocol, qt_sockaddr *aa, int *sockAddrSize)
{
    if (address.protocol() == QAbstractSocket::IPv6Protocol
        || address.protocol() == QAbstractSocket::AnyIPProtocol
        || socketProtocol == QAbstractSocket::IPv6Protocol
        || socketProtocol == QAbstractSocket::AnyIPProtocol) {
        memset(&aa->a6, 0, sizeof(sockaddr_in6));
        aa->a6.sin6_family = AF_INET6;
//#if QT_CONFIG(networkinterface)
//            aa->a6.sin6_scope_id = scopeIdFromString(address.scopeId());
//#endif
        aa->a6.sin6_port = htons(port);
        Q_IPV6ADDR tmp = address.toIPv6Address();
        memcpy(&aa->a6.sin6_addr, &tmp, sizeof(tmp));
        *sockAddrSize = sizeof(sockaddr_in6);
        SetSALen::set(&aa->a, sizeof(sockaddr_in6));
    } else {
        memset(&aa->a, 0, sizeof(sockaddr_in));
        aa->a4.sin_family = AF_INET;
        aa->a4.sin_port = htons(port);
        aa->a4.sin_addr.s_addr = htonl(address.toIPv4Address());
        *sockAddrSize = sizeof(sockaddr_in);
        SetSALen::set(&aa->a, sizeof(sockaddr_in));
    }
}

/*! \internal

    Sets the port and address to a sockaddr. Requires that sa point to the IPv6 struct if the address is IPv6.
*/
static inline void qt_socket_setPortAndAddress(SOCKET socketDescriptor, sockaddr_in * sockAddrIPv4, qt_sockaddr_in6 * sockAddrIPv6,
                                               quint16 port, const QHostAddress & address, sockaddr ** sockAddrPtr, QT_SOCKLEN_T *sockAddrSize)
{
#if !defined(QT_NO_IPV6)
    if (address.protocol() == QAbstractSocket::IPv6Protocol) {
        memset(sockAddrIPv6, 0, sizeof(qt_sockaddr_in6));
        sockAddrIPv6->sin6_family = AF_INET6;
        sockAddrIPv6->sin6_scope_id = address.scopeId().toInt();
        WSAHtons(socketDescriptor, port, &(sockAddrIPv6->sin6_port));
        Q_IPV6ADDR tmp = address.toIPv6Address();
        memcpy(&(sockAddrIPv6->sin6_addr.qt_s6_addr), &tmp, sizeof(tmp));
        *sockAddrSize = sizeof(qt_sockaddr_in6);
        *sockAddrPtr = (struct sockaddr *) sockAddrIPv6;
    } else
#endif
    if (address.protocol() == QAbstractSocket::IPv4Protocol
        || address.protocol() == QAbstractSocket::UnknownNetworkLayerProtocol) {
        memset(sockAddrIPv4, 0, sizeof(sockaddr_in));
        sockAddrIPv4->sin_family = AF_INET;
        WSAHtons(socketDescriptor, port, &(sockAddrIPv4->sin_port));
        WSAHtonl(socketDescriptor, address.toIPv4Address(), &(sockAddrIPv4->sin_addr.s_addr));
        *sockAddrSize = sizeof(sockaddr_in);
        *sockAddrPtr = (struct sockaddr *) sockAddrIPv4;
    } else {
        // unreachable
    }
}

// connectRequest
static QByteArray sp_set_request(const QHostAddress &addr, unsigned short port, unsigned char cmd1)
{
    int at = 0;
    QByteArray a;
    a.resize(4);
    a[at++] = 0x05; // socks version 5
    a[at++] = cmd1;
    a[at++] = 0x00; // reserved
    if(addr.protocol() == QAbstractSocket::IPv4Protocol || addr.protocol() == QAbstractSocket::UnknownNetworkLayerProtocol) {
        a[at++] = 0x01; // address type = ipv4
        quint32 ip4 = htonl(addr.toIPv4Address());
        a.resize(at+4);
        memcpy(a.data() + at, &ip4, 4);
        at += 4;
    }
    else {
        a[at++] = 0x04;
        Q_IPV6ADDR ip6 = addr.toIPv6Address();
        a.resize(at+16);
        for(int i = 0; i < 16; ++i)
            a[at++] = ip6[i];
    }

    // port
    a.resize(at+2);
    quint16 p = htons(port);
    memcpy(a.data() + at, &p, 2);

    return a;
}

qint64 QNativeSocketEnginePrivate::nativeSendDatagram(const char *data, qint64 len,
                                                   const QHostAddress &host, quint16 port)
{
    struct sockaddr_in sockAddrIPv4;
    struct sockaddr *sockAddrPtr = 0;
    QT_SOCKLEN_T sockAddrSize = 0;

#if !defined(QT_NO_IPV6)
    struct sockaddr_in6 sockAddrIPv6;
    if (host.protocol() == QAbstractSocket::IPv6Protocol) {
        memset(&sockAddrIPv6, 0, sizeof(sockAddrIPv6));
        sockAddrIPv6.sin6_family = AF_INET6;
        sockAddrIPv6.sin6_port = htons(port);

        Q_IPV6ADDR tmp = host.toIPv6Address();
        memcpy(&sockAddrIPv6.sin6_addr.s6_addr, &tmp, sizeof(tmp));
        QString scopeid = host.scopeId();
        bool ok;
        sockAddrIPv6.sin6_scope_id = scopeid.toInt(&ok);
#ifndef QT_NO_IPV6IFNAME
        if (!ok)
            sockAddrIPv6.sin6_scope_id = ::if_nametoindex(scopeid.toLatin1());
#endif
        sockAddrSize = sizeof(sockAddrIPv6);
        sockAddrPtr = (struct sockaddr *)&sockAddrIPv6;
    } else
#endif
    if (host.protocol() == QAbstractSocket::IPv4Protocol) {
        memset(&sockAddrIPv4, 0, sizeof(sockAddrIPv4));
        sockAddrIPv4.sin_family = AF_INET;
        sockAddrIPv4.sin_port = htons(port);
        sockAddrIPv4.sin_addr.s_addr = htonl(host.toIPv4Address());
        sockAddrSize = sizeof(sockAddrIPv4);
        sockAddrPtr = (struct sockaddr *)&sockAddrIPv4;
    }

    // ignore the SIGPIPE signal
    qt_ignore_sigpipe();
    ssize_t sentBytes = qt_safe_sendto(socketDescriptor, data, len,
                                       0, sockAddrPtr, sockAddrSize);

    if (sentBytes < 0) {
        switch (errno) {
        case EMSGSIZE:
            setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString);
            break;
        default:
            setError(QAbstractSocket::NetworkError, SendDatagramErrorString);
        }
    }

#if defined (QNATIVESOCKETENGINE_DEBUG)
    qDebug("QNativeSocketEngine::sendDatagram(%p \"%s\", %lli, \"%s\", %i) == %lli", data,
           qt_prettyDebug(data, qMin<int>(len, 16), len).data(), len, host.toString().toLatin1().constData(),
           port, (qint64) sentBytes);
#endif

    return qint64(sentBytes);
}

void Worker::targetConnectedHandler(void)
{
	this->m_target = new QTcpSocket(this);
	this->m_connector->assignTo(this->m_target);
	delete this->m_connector;
	this->m_connector = 0;

	union {
		quint32 v4;
		Q_IPV6ADDR v6;
		quint16 port;
		char ptr;
	} data;

	QByteArray response("\x05\x00\x00", 3);
	QHostAddress a;
	if (qobject_cast<QAbstractSocket*>(this->m_peer)) {
		a = (qobject_cast<QAbstractSocket*>(this->m_peer))->peerAddress();
	}

	if (a.protocol() == QAbstractSocket::IPv4Protocol) {
		response.append('\x01');
		data.v4 = qToBigEndian(a.toIPv4Address());
		response.append(QByteArray::fromRawData(&data.ptr, sizeof(data.v4)));
	}
	else if (a.protocol() == QAbstractSocket::IPv6Protocol) {
		response.append('\x04');
		data.v6 = a.toIPv6Address();
		response.append(QByteArray::fromRawData(&data.ptr, sizeof(data.v6)));
	}
	else {
		Q_ASSERT(false);
	}

	if (qobject_cast<QAbstractSocket*>(this->m_peer)) {
		data.port = qToBigEndian<quint16>((qobject_cast<QAbstractSocket*>(this->m_peer))->peerPort());
	}
	else {
		data.port = 0;
	}

	response.append(QByteArray::fromRawData(&data.ptr, sizeof(data.port)));

	QObject::connect(this->m_target, SIGNAL(readyRead()), this, SLOT(targetReadyReadHandler()));
	QObject::connect(this->m_target, SIGNAL(disconnected()), this, SLOT(disconnectHandler()));

	if (this->writeAndFlush(this->m_peer, response) == response.size()) {
		this->m_state = Worker::ConnectionProxiedState;
	}
	else {
		if (this->m_peer) {
			this->m_peer->close();
		}

		this->m_state = Worker::FatalErrorState;
	}
}

HostAddress::HostAddress(const QHostAddress &address) {
	if (address.protocol() == QAbstractSocket::IPv6Protocol) {
		const Q_IPV6ADDR &a = address.toIPv6Address();
		memcpy(qip6.c, a.c, 16);
	} else {
		addr[0] = 0ULL;
		shorts[4] = 0;
		shorts[5] = 0xffff;
		hash[3] = htonl(address.toIPv4Address());
	}
}

QByteArray NetworkManager::Utils::ipv6AddressFromHostAddress(const QHostAddress &address)
{
//     Q_ASSERT(address.protocol() == QAbstractSocket::IPv6Protocol);
    Q_IPV6ADDR tmp = address.toIPv6Address();
    QByteArray assembledAddress;
    for (int i = 0; i < 16; ++i) {
        assembledAddress[i] = tmp[i];
    }

    return assembledAddress;
}

///Fonction auxiliaire pour appliquer les masques
QHostAddress operator&(const QHostAddress& network, const QHostAddress& netmask)
{
	if(network.isNull() || netmask.isNull() || network.protocol() != netmask.protocol())
		return QHostAddress();

	switch(network.protocol())
	{
		case QAbstractSocket::IPv4Protocol:
			return QHostAddress(network.toIPv4Address() & netmask.toIPv4Address());
		case QAbstractSocket::IPv6Protocol:
		{
			Q_IPV6ADDR networkValue = network.toIPv6Address();
			Q_IPV6ADDR netmaskValue = netmask.toIPv6Address();
			for(int i = 0 ; i < 16 ; i++)
				networkValue[i] &= netmaskValue[i];
			return QHostAddress(networkValue);
		}
		default:
			return QHostAddress();
	}
}

std::string Common::packAddress(const QHostAddress &addr,
                                const uint16_t &port)
{
    std::string addrBin;
    char typeChar;
    std::string portNs(2, '\0');
    qToBigEndian(port, reinterpret_cast<uchar*>(&portNs[0]));
    if (addr.protocol() == QAbstractSocket::IPv4Protocol) {
        uint32_t ipv4Address = qToBigEndian(addr.toIPv4Address());
        typeChar = static_cast<char>(Address::IPV4);
        addrBin = std::string(reinterpret_cast<char*>(&ipv4Address), 4);
    } else {
        typeChar = static_cast<char>(Address::IPV6);
        Q_IPV6ADDR ipv6Address = addr.toIPv6Address();
        addrBin = std::string(reinterpret_cast<char*>(ipv6Address.c), 16);
    }
    return typeChar + addrBin + portNs;
}

QString GeoIPDatabase::lookup(const QHostAddress &hostAddr) const
{
    Q_IPV6ADDR addr = hostAddr.toIPv6Address();

    const uchar *ptr = m_data;

    for (int i = 0; i < 16; ++i) {
        for (int j = 0; j < 8; ++j) {
            bool right = static_cast<bool>((addr[i] >> (7 - j)) & 1);
            // Interpret the left/right record as number
            if (right)
                ptr += m_recordBytes;

            quint32 id = 0;
            uchar *idPtr = reinterpret_cast<uchar *>(&id);
            memcpy(&idPtr[4 - m_recordBytes], ptr, m_recordBytes);
            fromBigEndian(idPtr, 4);

            if (id == m_nodeCount) {
                return QString();
            }
            else if (id > m_nodeCount) {
                QString country = m_countries.value(id);
                if (country.isEmpty()) {
                    const quint32 offset = id - m_nodeCount - sizeof(DATA_SECTION_SEPARATOR);
                    quint32 tmp = offset + m_indexSize + sizeof(DATA_SECTION_SEPARATOR);
                    QVariant val = readDataField(tmp);
                    if (val.userType() == QMetaType::QVariantHash) {
                        country = val.toHash()["country"].toHash()["iso_code"].toString();
                        m_countries[id] = country;
                    }
                }
                return country;
            }
            else {
                ptr = m_data + (id * m_nodeSize);
            }
        }
    }

    return QString();
}

        bool isIPInRange(const QHostAddress &addr, const QList<Subnet> &subnets)
        {
            QHostAddress protocolEquivalentAddress;
            bool addrConversionOk = false;

            if (addr.protocol() == QAbstractSocket::IPv4Protocol) {
                // always succeeds
                protocolEquivalentAddress = QHostAddress(addr.toIPv6Address());
                addrConversionOk = true;
            }
            else {
                // only succeeds when addr is an ipv4-mapped ipv6 address
                protocolEquivalentAddress = QHostAddress(addr.toIPv4Address(&addrConversionOk));
            }

            for (const Subnet &subnet : subnets)
                if (addr.isInSubnet(subnet) || (addrConversionOk && protocolEquivalentAddress.isInSubnet(subnet)))
                    return true;

            return false;
        }

/*!
    \internal

    Adjusts the incoming \a address family to match the currently bound address
    (if any). This function will convert v4-mapped IPv6 addresses to IPv4 and
    vice-versa. All other address types and values will be left unchanged.
 */
QHostAddress QNativeSocketEnginePrivate::adjustAddressProtocol(const QHostAddress &address) const
{
    QAbstractSocket::NetworkLayerProtocol targetProtocol = socketProtocol;
    if (Q_LIKELY(targetProtocol == QAbstractSocket::UnknownNetworkLayerProtocol))
        return address;

    QAbstractSocket::NetworkLayerProtocol sourceProtocol = address.protocol();

    if (targetProtocol == QAbstractSocket::AnyIPProtocol)
        targetProtocol = QAbstractSocket::IPv6Protocol;
    if (targetProtocol == QAbstractSocket::IPv6Protocol && sourceProtocol == QAbstractSocket::IPv4Protocol) {
        // convert to IPv6 v4-mapped address. This always works
        return QHostAddress(address.toIPv6Address());
    }

    if (targetProtocol == QAbstractSocket::IPv4Protocol && sourceProtocol == QAbstractSocket::IPv6Protocol) {
        // convert to IPv4 if the source is a v4-mapped address
        quint32 ip4 = address.toIPv4Address();
        if (ip4)
            return QHostAddress(ip4);
    }

    return address;
}

QHostInfo QHostInfoAgent::fromName(const QString &hostName)
{
    QHostInfo results;

#if defined(QHOSTINFO_DEBUG)
    qDebug("QHostInfoAgent::fromName(%s) looking up...",
           hostName.toLatin1().constData());
#endif

    // Load res_init on demand.
    static volatile bool triedResolve = false;
    if (!triedResolve) {
        QMutexLocker locker(QMutexPool::globalInstanceGet(&local_res_init));
        if (!triedResolve) {
            resolveLibrary();
            triedResolve = true;
        }
    }

    // If res_init is available, poll it.
    if (local_res_init)
        local_res_init();

    QHostAddress address;
    if (address.setAddress(hostName)) {
        // Reverse lookup
// Reverse lookups using getnameinfo are broken on darwin, use gethostbyaddr instead.
#if !defined (QT_NO_GETADDRINFO) && !defined (Q_OS_DARWIN)
        sockaddr_in sa4;
#ifndef QT_NO_IPV6
        sockaddr_in6 sa6;
#endif
        sockaddr *sa = 0;
        QT_SOCKLEN_T saSize = 0;
        if (address.protocol() == QAbstractSocket::IPv4Protocol) {
            sa = (sockaddr *)&sa4;
            saSize = sizeof(sa4);
            memset(&sa4, 0, sizeof(sa4));
            sa4.sin_family = AF_INET;
            sa4.sin_addr.s_addr = htonl(address.toIPv4Address());
        }
#ifndef QT_NO_IPV6
        else {
            sa = (sockaddr *)&sa6;
            saSize = sizeof(sa6);
            memset(&sa6, 0, sizeof(sa6));
            sa6.sin6_family = AF_INET6;
            memcpy(sa6.sin6_addr.s6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr.s6_addr));
        }
#endif

        char hbuf[NI_MAXHOST];
        if (sa && getnameinfo(sa, saSize, hbuf, sizeof(hbuf), 0, 0, 0) == 0)
            results.setHostName(QString::fromLatin1(hbuf));
#else
        in_addr_t inetaddr = qt_safe_inet_addr(hostName.toLatin1().constData());
        struct hostent *ent = gethostbyaddr((const char *)&inetaddr, sizeof(inetaddr), AF_INET);
        if (ent)
            results.setHostName(QString::fromLatin1(ent->h_name));
#endif

        if (results.hostName().isEmpty())
            results.setHostName(address.toString());
        results.setAddresses(QList<QHostAddress>() << address);
        return results;
    }

    // IDN support
    QByteArray aceHostname = QUrl::toAce(hostName);
    results.setHostName(hostName);
    if (aceHostname.isEmpty()) {
        results.setError(QHostInfo::HostNotFound);
        results.setErrorString(hostName.isEmpty() ?
                               QCoreApplication::translate("QHostInfoAgent", "No host name given") :
                               QCoreApplication::translate("QHostInfoAgent", "Invalid hostname"));
        return results;
    }

#if !defined (QT_NO_GETADDRINFO)
    // Call getaddrinfo, and place all IPv4 addresses at the start and
    // the IPv6 addresses at the end of the address list in results.
    addrinfo *res = 0;
    struct addrinfo hints;
    memset(&hints, 0, sizeof(hints));
    hints.ai_family = PF_UNSPEC;
#ifdef Q_ADDRCONFIG
    hints.ai_flags = Q_ADDRCONFIG;
#endif

    int result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
# ifdef Q_ADDRCONFIG
    if (result == EAI_BADFLAGS) {
        // if the lookup failed with AI_ADDRCONFIG set, try again without it
        hints.ai_flags = 0;
        result = getaddrinfo(aceHostname.constData(), 0, &hints, &res);
    }
# endif

    if (result == 0) {
        addrinfo *node = res;
//.........这里部分代码省略.........