diff options
Diffstat (limited to 'src/network/kernel/qhostaddress.cpp')
| -rw-r--r-- | src/network/kernel/qhostaddress.cpp | 120 |
1 files changed, 104 insertions, 16 deletions
diff --git a/src/network/kernel/qhostaddress.cpp b/src/network/kernel/qhostaddress.cpp index 0dbe1112cd..757a6ad0b0 100644 --- a/src/network/kernel/qhostaddress.cpp +++ b/src/network/kernel/qhostaddress.cpp @@ -73,7 +73,7 @@ QT_BEGIN_NAMESPACE // sockaddr_in6 size changed between old and new SDK // Only the new version is the correct one, so always // use this structure. -#if defined(Q_OS_WINCE) || defined(Q_OS_WINRT) +#if defined(Q_OS_WINRT) # if !defined(u_char) # define u_char unsigned char # endif @@ -152,20 +152,37 @@ void QHostAddressPrivate::setAddress(quint32 a_) /// parses v4-mapped addresses or the AnyIPv6 address and stores in \a a; /// returns true if the address was one of those -static bool convertToIpv4(quint32& a, const Q_IPV6ADDR &a6) +static bool convertToIpv4(quint32& a, const Q_IPV6ADDR &a6, const QHostAddress::ConversionMode mode) { + if (mode == QHostAddress::StrictConversion) + return false; + const uchar *ptr = a6.c; if (qFromUnaligned<quint64>(ptr) != 0) return false; - if (qFromBigEndian<quint32>(ptr + 8) == 0) { - // is it AnyIPv6? - a = 0; - return qFromBigEndian<quint32>(ptr + 12) == 0; + + const quint32 mid = qFromBigEndian<quint32>(ptr + 8); + if ((mid == 0xffff) && (mode & QHostAddress::ConvertV4MappedToIPv4)) { + a = qFromBigEndian<quint32>(ptr + 12); + return true; } - if (qFromBigEndian<quint32>(ptr + 8) != 0xFFFF) + if (mid != 0) return false; - a = qFromBigEndian<quint32>(ptr + 12); - return true; + + const quint32 low = qFromBigEndian<quint32>(ptr + 12); + if ((low == 0) && (mode & QHostAddress::ConvertUnspecifiedAddress)) { + a = 0; + return true; + } + if ((low == 1) && (mode & QHostAddress::ConvertLocalHost)) { + a = INADDR_LOOPBACK; + return true; + } + if ((low != 1) && (mode & QHostAddress::ConvertV4CompatToIPv4)) { + a = low; + return true; + } + return false; } void QHostAddressPrivate::setAddress(const quint8 *a_) @@ -174,7 +191,8 @@ void QHostAddressPrivate::setAddress(const quint8 *a_) isParsed = true; memcpy(a6.c, a_, sizeof(a6)); a = 0; - convertToIpv4(a, a6); + convertToIpv4(a, a6, (QHostAddress::ConvertV4MappedToIPv4 + | QHostAddress::ConvertUnspecifiedAddress)); } void QHostAddressPrivate::setAddress(const Q_IPV6ADDR &a_) @@ -386,6 +404,20 @@ void QNetmaskAddress::setPrefixLength(QAbstractSocket::NetworkLayerProtocol prot \value Any The dual stack any-address. A socket bound with this address will listen on both IPv4 and IPv6 interfaces. */ +/*! \enum QHostAddress::ConversionModeFlag + + \since 5.8 + + \value StrictConversion Don't convert IPv6 addresses to IPv4 when comparing two QHostAddress objects of different protocols, so they will always be considered different. + \value ConvertV4MappedToIPv4 Convert IPv4-mapped IPv6 addresses (RFC 4291 sect. 2.5.5.2) when comparing. Therefore QHostAddress("::ffff:192.168.1.1") will compare equal to QHostAddress("192.168.1.1"). + \value ConvertV4CompatToIPv4 Convert IPv4-compatible IPv6 addresses (RFC 4291 sect. 2.5.5.1) when comparing. Therefore QHostAddress("::192.168.1.1") will compare equal to QHostAddress("192.168.1.1"). + \value ConvertLocalHost Convert the IPv6 loopback addresses to its IPv4 equivalent when comparing. Therefore e.g. QHostAddress("::1") will compare equal to QHostAddress("127.0.0.1"). + \value ConvertUnspecifiedAddress All unspecified addresses will compare equal, namely AnyIPv4, AnyIPv6 and Any. + \value TolerantConversion Sets all three preceding flags. + + \sa isEqual() + */ + /*! Constructs a null host address object, i.e. an address which is not valid for any host or interface. \sa clear() @@ -691,7 +723,9 @@ quint32 QHostAddress::toIPv4Address(bool *ok) const quint32 dummy; if (ok) *ok = d->protocol == QAbstractSocket::IPv4Protocol || d->protocol == QAbstractSocket::AnyIPProtocol - || (d->protocol == QAbstractSocket::IPv6Protocol && convertToIpv4(dummy, d->a6)); + || (d->protocol == QAbstractSocket::IPv6Protocol + && convertToIpv4(dummy, d->a6, ConversionMode(QHostAddress::ConvertV4MappedToIPv4 + | QHostAddress::ConvertUnspecifiedAddress))); return d->a; } @@ -813,19 +847,73 @@ void QHostAddress::setScopeId(const QString &id) /*! Returns \c true if this host address is the same as the \a other address - given; otherwise returns \c false. + given; otherwise returns \c false. This operator just calls isEqual(other, StrictConversion). + + \sa isEqual() */ bool QHostAddress::operator==(const QHostAddress &other) const { + return isEqual(other, StrictConversion); +} + +/*! + \since 5.8 + + Returns \c true if this host address is the same as the \a other address + given; otherwise returns \c false. + + The parameter \a mode controls which conversions are preformed between addresses + of differing protocols. If no \a mode is given, \c TolerantConversion is performed + by default. + + \sa ConversionMode, operator==() + */ +bool QHostAddress::isEqual(const QHostAddress &other, ConversionMode mode) const +{ QT_ENSURE_PARSED(this); QT_ENSURE_PARSED(&other); - if (d->protocol == QAbstractSocket::IPv4Protocol) - return other.d->protocol == QAbstractSocket::IPv4Protocol && d->a == other.d->a; + if (d->protocol == QAbstractSocket::IPv4Protocol) { + switch (other.d->protocol) { + case QAbstractSocket::IPv4Protocol: + return d->a == other.d->a; + case QAbstractSocket::IPv6Protocol: + quint32 a4; + return convertToIpv4(a4, other.d->a6, mode) && (a4 == d->a); + case QAbstractSocket::AnyIPProtocol: + return (mode & QHostAddress::ConvertUnspecifiedAddress) && d->a == 0; + case QAbstractSocket::UnknownNetworkLayerProtocol: + return false; + } + } + if (d->protocol == QAbstractSocket::IPv6Protocol) { - return other.d->protocol == QAbstractSocket::IPv6Protocol - && memcmp(&d->a6, &other.d->a6, sizeof(Q_IPV6ADDR)) == 0; + switch (other.d->protocol) { + case QAbstractSocket::IPv4Protocol: + quint32 a4; + return convertToIpv4(a4, d->a6, mode) && (a4 == other.d->a); + case QAbstractSocket::IPv6Protocol: + return memcmp(&d->a6, &other.d->a6, sizeof(Q_IPV6ADDR)) == 0; + case QAbstractSocket::AnyIPProtocol: + return (mode & QHostAddress::ConvertUnspecifiedAddress) + && (other.d->a6_64.c[0] == 0) && (other.d->a6_64.c[1] == 0); + case QAbstractSocket::UnknownNetworkLayerProtocol: + return false; + } + } + + if ((d->protocol == QAbstractSocket::AnyIPProtocol) + && (mode & QHostAddress::ConvertUnspecifiedAddress)) { + switch (other.d->protocol) { + case QAbstractSocket::IPv4Protocol: + return other.d->a == 0; + case QAbstractSocket::IPv6Protocol: + return (other.d->a6_64.c[0] == 0) && (other.d->a6_64.c[1] == 0); + default: + break; + } } + return d->protocol == other.d->protocol; } |