/**************************************************************************** ** ** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies). ** Contact: http://www.qt-project.org/legal ** ** This file is part of the QtNetwork module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** Commercial License Usage ** Licensees holding valid commercial Qt licenses may use this file in ** accordance with the commercial license agreement provided with the ** Software or, alternatively, in accordance with the terms contained in ** a written agreement between you and Digia. For licensing terms and ** conditions see http://qt.digia.com/licensing. For further information ** use the contact form at http://qt.digia.com/contact-us. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Digia gives you certain additional ** rights. These rights are described in the Digia Qt LGPL Exception ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. ** ** GNU General Public License Usage ** Alternatively, this file may be used under the terms of the GNU ** General Public License version 3.0 as published by the Free Software ** Foundation and appearing in the file LICENSE.GPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU General Public License version 3.0 requirements will be ** met: http://www.gnu.org/copyleft/gpl.html. ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include #include #include "qnativesocketengine_p.h" #include #include #include #include #include //#define QNATIVESOCKETENGINE_DEBUG #if defined(QNATIVESOCKETENGINE_DEBUG) # include # include #endif QT_BEGIN_NAMESPACE #if defined(QNATIVESOCKETENGINE_DEBUG) void verboseWSErrorDebug(int r) { switch (r) { case WSANOTINITIALISED : qDebug("WSA error : WSANOTINITIALISED"); break; case WSAEINTR: qDebug("WSA error : WSAEINTR"); break; case WSAEBADF: qDebug("WSA error : WSAEBADF"); break; case WSAEACCES: qDebug("WSA error : WSAEACCES"); break; case WSAEFAULT: qDebug("WSA error : WSAEFAULT"); break; case WSAEINVAL: qDebug("WSA error : WSAEINVAL"); break; case WSAEMFILE: qDebug("WSA error : WSAEMFILE"); break; case WSAEWOULDBLOCK: qDebug("WSA error : WSAEWOULDBLOCK"); break; case WSAEINPROGRESS: qDebug("WSA error : WSAEINPROGRESS"); break; case WSAEALREADY: qDebug("WSA error : WSAEALREADY"); break; case WSAENOTSOCK: qDebug("WSA error : WSAENOTSOCK"); break; case WSAEDESTADDRREQ: qDebug("WSA error : WSAEDESTADDRREQ"); break; case WSAEMSGSIZE: qDebug("WSA error : WSAEMSGSIZE"); break; case WSAEPROTOTYPE: qDebug("WSA error : WSAEPROTOTYPE"); break; case WSAENOPROTOOPT: qDebug("WSA error : WSAENOPROTOOPT"); break; case WSAEPROTONOSUPPORT: qDebug("WSA error : WSAEPROTONOSUPPORT"); break; case WSAESOCKTNOSUPPORT: qDebug("WSA error : WSAESOCKTNOSUPPORT"); break; case WSAEOPNOTSUPP: qDebug("WSA error : WSAEOPNOTSUPP"); break; case WSAEPFNOSUPPORT: qDebug("WSA error : WSAEPFNOSUPPORT"); break; case WSAEAFNOSUPPORT: qDebug("WSA error : WSAEAFNOSUPPORT"); break; case WSAEADDRINUSE: qDebug("WSA error : WSAEADDRINUSE"); break; case WSAEADDRNOTAVAIL: qDebug("WSA error : WSAEADDRNOTAVAIL"); break; case WSAENETDOWN: qDebug("WSA error : WSAENETDOWN"); break; case WSAENETUNREACH: qDebug("WSA error : WSAENETUNREACH"); break; case WSAENETRESET: qDebug("WSA error : WSAENETRESET"); break; case WSAECONNABORTED: qDebug("WSA error : WSAECONNABORTED"); break; case WSAECONNRESET: qDebug("WSA error : WSAECONNRESET"); break; case WSAENOBUFS: qDebug("WSA error : WSAENOBUFS"); break; case WSAEISCONN: qDebug("WSA error : WSAEISCONN"); break; case WSAENOTCONN: qDebug("WSA error : WSAENOTCONN"); break; case WSAESHUTDOWN: qDebug("WSA error : WSAESHUTDOWN"); break; case WSAETOOMANYREFS: qDebug("WSA error : WSAETOOMANYREFS"); break; case WSAETIMEDOUT: qDebug("WSA error : WSAETIMEDOUT"); break; case WSAECONNREFUSED: qDebug("WSA error : WSAECONNREFUSED"); break; case WSAELOOP: qDebug("WSA error : WSAELOOP"); break; case WSAENAMETOOLONG: qDebug("WSA error : WSAENAMETOOLONG"); break; case WSAEHOSTDOWN: qDebug("WSA error : WSAEHOSTDOWN"); break; case WSAEHOSTUNREACH: qDebug("WSA error : WSAEHOSTUNREACH"); break; case WSAENOTEMPTY: qDebug("WSA error : WSAENOTEMPTY"); break; case WSAEPROCLIM: qDebug("WSA error : WSAEPROCLIM"); break; case WSAEUSERS: qDebug("WSA error : WSAEUSERS"); break; case WSAEDQUOT: qDebug("WSA error : WSAEDQUOT"); break; case WSAESTALE: qDebug("WSA error : WSAESTALE"); break; case WSAEREMOTE: qDebug("WSA error : WSAEREMOTE"); break; case WSAEDISCON: qDebug("WSA error : WSAEDISCON"); break; default: qDebug("WSA error : Unknown"); break; } qErrnoWarning(r, "more details"); } /* Returns a human readable representation of the first \a len characters in \a data. */ static QByteArray qt_prettyDebug(const char *data, int len, int maxLength) { if (!data) return "(null)"; QByteArray out; for (int i = 0; i < len; ++i) { char c = data[i]; if (isprint(int(uchar(c)))) { out += c; } else switch (c) { case '\n': out += "\\n"; break; case '\r': out += "\\r"; break; case '\t': out += "\\t"; break; default: QString tmp; tmp.sprintf("\\%o", c); out += tmp.toLatin1().constData(); } } if (len < maxLength) out += "..."; return out; } #define WS_ERROR_DEBUG(x) verboseWSErrorDebug(x); #else #define WS_ERROR_DEBUG(x) Q_UNUSED(x) #endif #ifndef AF_INET6 #define AF_INET6 23 /* Internetwork Version 6 */ #endif #ifndef SO_EXCLUSIVEADDRUSE #define SO_EXCLUSIVEADDRUSE ((int)(~SO_REUSEADDR)) /* disallow local address reuse */ #endif //### #define QT_SOCKLEN_T int #define QT_SOCKOPTLEN_T int /* Extracts the port and address from a sockaddr, and stores them in \a port and \a addr if they are non-null. */ static inline void qt_socket_getPortAndAddress(SOCKET socketDescriptor, const qt_sockaddr *sa, quint16 *port, QHostAddress *address) { #if !defined (QT_NO_IPV6) if (sa->a.sa_family == AF_INET6) { const qt_sockaddr_in6 *sa6 = &sa->a6; Q_IPV6ADDR tmp; for (int i = 0; i < 16; ++i) tmp.c[i] = sa6->sin6_addr.qt_s6_addr[i]; if (address) { QHostAddress a; a.setAddress(tmp); a.setScopeId(QString::number(sa6->sin6_scope_id)); *address = a; } if (port) WSANtohs(socketDescriptor, sa6->sin6_port, port); } else #endif if (sa->a.sa_family == AF_INET) { const sockaddr_in *sa4 = &sa->a4; unsigned long addr; WSANtohl(socketDescriptor, sa4->sin_addr.s_addr, &addr); QHostAddress a; a.setAddress(addr); if (address) *address = a; if (port) WSANtohs(socketDescriptor, sa4->sin_port, port); } } /*! \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 } } /*! \internal */ static inline QAbstractSocket::SocketType qt_socket_getType(int socketDescriptor) { int value = 0; QT_SOCKLEN_T valueSize = sizeof(value); if (::getsockopt(socketDescriptor, SOL_SOCKET, SO_TYPE, (char *) &value, &valueSize) != 0) { WS_ERROR_DEBUG(WSAGetLastError()); } else { if (value == SOCK_STREAM) return QAbstractSocket::TcpSocket; else if (value == SOCK_DGRAM) return QAbstractSocket::UdpSocket; } return QAbstractSocket::UnknownSocketType; } /*! \internal */ static inline int qt_socket_getMaxMsgSize(int socketDescriptor) { int value = 0; QT_SOCKLEN_T valueSize = sizeof(value); if (::getsockopt(socketDescriptor, SOL_SOCKET, SO_MAX_MSG_SIZE, (char *) &value, &valueSize) != 0) { WS_ERROR_DEBUG(WSAGetLastError()); } return value; } QWindowsSockInit::QWindowsSockInit() : version(0) { //### should we try for 2.2 on all platforms ?? WSAData wsadata; // IPv6 requires Winsock v2.0 or better. if (WSAStartup(MAKEWORD(2,0), &wsadata) != 0) { qWarning("QTcpSocketAPI: WinSock v2.0 initialization failed."); } else { version = 0x20; } } QWindowsSockInit::~QWindowsSockInit() { WSACleanup(); } // MS Transport Provider IOCTL to control // reporting PORT_UNREACHABLE messages // on UDP sockets via recv/WSARecv/etc. // Path TRUE in input buffer to enable (default if supported), // FALSE to disable. #ifndef SIO_UDP_CONNRESET # ifndef IOC_VENDOR # define IOC_VENDOR 0x18000000 # endif # ifndef _WSAIOW # define _WSAIOW(x,y) (IOC_IN|(x)|(y)) # endif # define SIO_UDP_CONNRESET _WSAIOW(IOC_VENDOR,12) #endif bool QNativeSocketEnginePrivate::createNewSocket(QAbstractSocket::SocketType socketType, QAbstractSocket::NetworkLayerProtocol socketProtocol) { //### no ip6 support on winsocket 1.1 but we will try not to use this !!!!!!!!!!!!1 /* if (winsockVersion < 0x20 && socketProtocol == QAbstractSocket::IPv6Protocol) { //### no ip6 support return -1; } */ int protocol = (socketProtocol == QAbstractSocket::IPv6Protocol) ? AF_INET6 : AF_INET; int type = (socketType == QAbstractSocket::UdpSocket) ? SOCK_DGRAM : SOCK_STREAM; // MSDN KB179942 states that on winnt 4 WSA_FLAG_OVERLAPPED is needed if socket is to be non blocking // and recomends alwasy doing it for cross windows version comapablity. SOCKET socket = ::WSASocket(protocol, type, 0, NULL, 0, WSA_FLAG_OVERLAPPED); if (socket == INVALID_SOCKET) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSANOTINITIALISED: //### break; case WSAEAFNOSUPPORT: case WSAESOCKTNOSUPPORT: case WSAEPROTOTYPE: case WSAEINVAL: setError(QAbstractSocket::UnsupportedSocketOperationError, ProtocolUnsupportedErrorString); break; case WSAEMFILE: case WSAENOBUFS: setError(QAbstractSocket::SocketResourceError, ResourceErrorString); break; default: break; } return false; } #if !defined(Q_OS_WINCE) if (socketType == QAbstractSocket::UdpSocket) { // enable new behavior using // SIO_UDP_CONNRESET DWORD dwBytesReturned = 0; int bNewBehavior = 1; if (::WSAIoctl(socket, SIO_UDP_CONNRESET, &bNewBehavior, sizeof(bNewBehavior), NULL, 0, &dwBytesReturned, NULL, NULL) == SOCKET_ERROR) { // not to worry isBogusUdpReadNotification() should handle this otherwise int err = WSAGetLastError(); WS_ERROR_DEBUG(err); } } #endif socketDescriptor = socket; return true; } /*! \internal Returns the value of the socket option \a opt. */ int QNativeSocketEnginePrivate::option(QNativeSocketEngine::SocketOption opt) const { Q_Q(const QNativeSocketEngine); if (!q->isValid()) return -1; int n = -1; int level = SOL_SOCKET; // default switch (opt) { case QNativeSocketEngine::ReceiveBufferSocketOption: n = SO_RCVBUF; break; case QNativeSocketEngine::SendBufferSocketOption: n = SO_SNDBUF; break; case QNativeSocketEngine::BroadcastSocketOption: n = SO_BROADCAST; break; case QNativeSocketEngine::NonBlockingSocketOption: { unsigned long buf = 0; if (WSAIoctl(socketDescriptor, FIONBIO, 0,0, &buf, sizeof(buf), 0,0,0) == 0) return buf; else return -1; break; } case QNativeSocketEngine::AddressReusable: n = SO_REUSEADDR; break; case QNativeSocketEngine::BindExclusively: n = SO_EXCLUSIVEADDRUSE; break; case QNativeSocketEngine::ReceiveOutOfBandData: n = SO_OOBINLINE; break; case QNativeSocketEngine::LowDelayOption: level = IPPROTO_TCP; n = TCP_NODELAY; break; case QNativeSocketEngine::KeepAliveOption: n = SO_KEEPALIVE; break; case QNativeSocketEngine::MulticastTtlOption: #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { level = IPPROTO_IPV6; n = IPV6_MULTICAST_HOPS; } else #endif { level = IPPROTO_IP; n = IP_MULTICAST_TTL; } break; case QNativeSocketEngine::MulticastLoopbackOption: #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { level = IPPROTO_IPV6; n = IPV6_MULTICAST_LOOP; } else #endif { level = IPPROTO_IP; n = IP_MULTICAST_LOOP; } break; } #if Q_BYTE_ORDER != Q_LITTLE_ENDIAN #error code assumes windows is little endian #endif int v = 0; //note: windows doesn't write to all bytes if the option type is smaller than int QT_SOCKOPTLEN_T len = sizeof(v); if (getsockopt(socketDescriptor, level, n, (char *) &v, &len) == 0) return v; WS_ERROR_DEBUG(WSAGetLastError()); return -1; } /*! \internal Sets the socket option \a opt to \a v. */ bool QNativeSocketEnginePrivate::setOption(QNativeSocketEngine::SocketOption opt, int v) { Q_Q(const QNativeSocketEngine); if (!q->isValid()) return false; int n = 0; int level = SOL_SOCKET; // default switch (opt) { case QNativeSocketEngine::ReceiveBufferSocketOption: n = SO_RCVBUF; break; case QNativeSocketEngine::SendBufferSocketOption: n = SO_SNDBUF; break; case QNativeSocketEngine::BroadcastSocketOption: n = SO_BROADCAST; break; case QNativeSocketEngine::NonBlockingSocketOption: { unsigned long buf = v; unsigned long outBuf; DWORD sizeWritten = 0; if (::WSAIoctl(socketDescriptor, FIONBIO, &buf, sizeof(unsigned long), &outBuf, sizeof(unsigned long), &sizeWritten, 0,0) == SOCKET_ERROR) { WS_ERROR_DEBUG(WSAGetLastError()); return false; } return true; break; } case QNativeSocketEngine::AddressReusable: n = SO_REUSEADDR; break; case QNativeSocketEngine::BindExclusively: n = SO_EXCLUSIVEADDRUSE; break; case QNativeSocketEngine::ReceiveOutOfBandData: n = SO_OOBINLINE; break; case QNativeSocketEngine::LowDelayOption: level = IPPROTO_TCP; n = TCP_NODELAY; break; case QNativeSocketEngine::KeepAliveOption: n = SO_KEEPALIVE; break; case QNativeSocketEngine::MulticastTtlOption: #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { level = IPPROTO_IPV6; n = IPV6_MULTICAST_HOPS; } else #endif { level = IPPROTO_IP; n = IP_MULTICAST_TTL; } break; case QNativeSocketEngine::MulticastLoopbackOption: #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { level = IPPROTO_IPV6; n = IPV6_MULTICAST_LOOP; } else #endif { level = IPPROTO_IP; n = IP_MULTICAST_LOOP; } break; } if (::setsockopt(socketDescriptor, level, n, (char*)&v, sizeof(v)) != 0) { WS_ERROR_DEBUG(WSAGetLastError()); return false; } return true; } /*! Fetches information about both ends of the connection: whatever is available. */ bool QNativeSocketEnginePrivate::fetchConnectionParameters() { localPort = 0; localAddress.clear(); peerPort = 0; peerAddress.clear(); if (socketDescriptor == -1) return false; qt_sockaddr sa; QT_SOCKLEN_T sockAddrSize = sizeof(sa); // Determine local address memset(&sa, 0, sizeof(sa)); if (::getsockname(socketDescriptor, &sa.a, &sockAddrSize) == 0) { qt_socket_getPortAndAddress(socketDescriptor, &sa, &localPort, &localAddress); // Determine protocol family switch (sa.a.sa_family) { case AF_INET: socketProtocol = QAbstractSocket::IPv4Protocol; break; #if !defined (QT_NO_IPV6) case AF_INET6: socketProtocol = QAbstractSocket::IPv6Protocol; break; #endif default: socketProtocol = QAbstractSocket::UnknownNetworkLayerProtocol; break; } } else { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); if (err == WSAENOTSOCK) { setError(QAbstractSocket::UnsupportedSocketOperationError, InvalidSocketErrorString); return false; } } memset(&sa, 0, sizeof(sa)); if (::getpeername(socketDescriptor, &sa.a, &sockAddrSize) == 0) { qt_socket_getPortAndAddress(socketDescriptor, &sa, &peerPort, &peerAddress); } else { WS_ERROR_DEBUG(WSAGetLastError()); } socketType = qt_socket_getType(socketDescriptor); #if defined (QNATIVESOCKETENGINE_DEBUG) QString socketProtocolStr = "UnknownProtocol"; if (socketProtocol == QAbstractSocket::IPv4Protocol) socketProtocolStr = "IPv4Protocol"; else if (socketProtocol == QAbstractSocket::IPv6Protocol) socketProtocolStr = "IPv6Protocol"; QString socketTypeStr = "UnknownSocketType"; if (socketType == QAbstractSocket::TcpSocket) socketTypeStr = "TcpSocket"; else if (socketType == QAbstractSocket::UdpSocket) socketTypeStr = "UdpSocket"; qDebug("QNativeSocketEnginePrivate::fetchConnectionParameters() localAddress == %s, localPort = %i, peerAddress == %s, peerPort = %i, socketProtocol == %s, socketType == %s", localAddress.toString().toLatin1().constData(), localPort, peerAddress.toString().toLatin1().constData(), peerPort, socketProtocolStr.toLatin1().constData(), socketTypeStr.toLatin1().constData()); #endif return true; } bool QNativeSocketEnginePrivate::nativeConnect(const QHostAddress &address, quint16 port) { #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeConnect() to %s :: %i", address.toString().toLatin1().constData(), port); #endif struct sockaddr_in sockAddrIPv4; qt_sockaddr_in6 sockAddrIPv6; struct sockaddr *sockAddrPtr = 0; QT_SOCKLEN_T sockAddrSize = 0; qt_socket_setPortAndAddress(socketDescriptor, &sockAddrIPv4, &sockAddrIPv6, port, address, &sockAddrPtr, &sockAddrSize); forever { int connectResult = ::WSAConnect(socketDescriptor, sockAddrPtr, sockAddrSize, 0,0,0,0); if (connectResult == SOCKET_ERROR) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSANOTINITIALISED: //### break; case WSAEISCONN: socketState = QAbstractSocket::ConnectedState; break; case WSAEWOULDBLOCK: { // If WSAConnect returns WSAEWOULDBLOCK on the second // connection attempt, we have to check SO_ERROR's // value to detect ECONNREFUSED. If we don't get // ECONNREFUSED, we'll have to treat it as an // unfinished operation. int value = 0; QT_SOCKLEN_T valueSize = sizeof(value); if (::getsockopt(socketDescriptor, SOL_SOCKET, SO_ERROR, (char *) &value, &valueSize) == 0) { if (value == WSAECONNREFUSED) { setError(QAbstractSocket::ConnectionRefusedError, ConnectionRefusedErrorString); socketState = QAbstractSocket::UnconnectedState; break; } if (value == WSAETIMEDOUT) { setError(QAbstractSocket::NetworkError, ConnectionTimeOutErrorString); socketState = QAbstractSocket::UnconnectedState; break; } if (value == WSAEHOSTUNREACH) { setError(QAbstractSocket::NetworkError, HostUnreachableErrorString); socketState = QAbstractSocket::UnconnectedState; break; } if (value == WSAEADDRNOTAVAIL) { setError(QAbstractSocket::NetworkError, AddressNotAvailableErrorString); socketState = QAbstractSocket::UnconnectedState; break; } } // fall through } case WSAEINPROGRESS: setError(QAbstractSocket::UnfinishedSocketOperationError, InvalidSocketErrorString); socketState = QAbstractSocket::ConnectingState; break; case WSAEADDRINUSE: setError(QAbstractSocket::NetworkError, AddressInuseErrorString); break; case WSAECONNREFUSED: setError(QAbstractSocket::ConnectionRefusedError, ConnectionRefusedErrorString); socketState = QAbstractSocket::UnconnectedState; break; case WSAETIMEDOUT: setError(QAbstractSocket::NetworkError, ConnectionTimeOutErrorString); break; case WSAEACCES: setError(QAbstractSocket::SocketAccessError, AccessErrorString); socketState = QAbstractSocket::UnconnectedState; break; case WSAEHOSTUNREACH: setError(QAbstractSocket::NetworkError, HostUnreachableErrorString); socketState = QAbstractSocket::UnconnectedState; break; case WSAENETUNREACH: setError(QAbstractSocket::NetworkError, NetworkUnreachableErrorString); socketState = QAbstractSocket::UnconnectedState; break; case WSAEINVAL: case WSAEALREADY: setError(QAbstractSocket::UnfinishedSocketOperationError, InvalidSocketErrorString); break; default: break; } if (socketState != QAbstractSocket::ConnectedState) { #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeConnect(%s, %i) == false (%s)", address.toString().toLatin1().constData(), port, socketState == QAbstractSocket::ConnectingState ? "Connection in progress" : socketErrorString.toLatin1().constData()); #endif return false; } } break; } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeConnect(%s, %i) == true", address.toString().toLatin1().constData(), port); #endif socketState = QAbstractSocket::ConnectedState; return true; } bool QNativeSocketEnginePrivate::nativeBind(const QHostAddress &a, quint16 port) { QHostAddress address = a; switch (address.protocol()) { case QAbstractSocket::IPv6Protocol: if (address.toIPv6Address()[0] == 0xff) { // binding to a multicast address address = QHostAddress(QHostAddress::AnyIPv6); } break; case QAbstractSocket::IPv4Protocol: if ((address.toIPv4Address() & 0xffff0000) == 0xefff0000) { // binding to a multicast address address = QHostAddress(QHostAddress::Any); } break; default: break; } struct sockaddr_in sockAddrIPv4; qt_sockaddr_in6 sockAddrIPv6; struct sockaddr *sockAddrPtr = 0; QT_SOCKLEN_T sockAddrSize = 0; qt_socket_setPortAndAddress(socketDescriptor, &sockAddrIPv4, &sockAddrIPv6, port, address, &sockAddrPtr, &sockAddrSize); int bindResult = ::bind(socketDescriptor, sockAddrPtr, sockAddrSize); if (bindResult == SOCKET_ERROR) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSANOTINITIALISED: //### break; case WSAEADDRINUSE: case WSAEINVAL: setError(QAbstractSocket::AddressInUseError, AddressInuseErrorString); break; case WSAEACCES: setError(QAbstractSocket::SocketAccessError, AddressProtectedErrorString); break; case WSAEADDRNOTAVAIL: setError(QAbstractSocket::SocketAddressNotAvailableError, AddressNotAvailableErrorString); break; default: break; } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeBind(%s, %i) == false (%s)", address.toString().toLatin1().constData(), port, socketErrorString.toLatin1().constData()); #endif return false; } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeBind(%s, %i) == true", address.toString().toLatin1().constData(), port); #endif socketState = QAbstractSocket::BoundState; return true; } bool QNativeSocketEnginePrivate::nativeListen(int backlog) { if (::listen(socketDescriptor, backlog) == SOCKET_ERROR) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSANOTINITIALISED: //### break; case WSAEADDRINUSE: setError(QAbstractSocket::AddressInUseError, PortInuseErrorString); break; default: break; } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeListen(%i) == false (%s)", backlog, socketErrorString.toLatin1().constData()); #endif return false; } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeListen(%i) == true", backlog); #endif socketState = QAbstractSocket::ListeningState; return true; } int QNativeSocketEnginePrivate::nativeAccept() { int acceptedDescriptor = WSAAccept(socketDescriptor, 0,0,0,0); if (acceptedDescriptor != -1 && QAbstractEventDispatcher::instance()) { // Because of WSAAsyncSelect() WSAAccept returns a non blocking socket // with the same attributes as the listening socket including the current // WSAAsyncSelect(). To be able to change the socket to blocking mode the // WSAAsyncSelect() call must be cancled. QSocketNotifier n(acceptedDescriptor, QSocketNotifier::Read); n.setEnabled(true); n.setEnabled(false); } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeAccept() == %i", acceptedDescriptor); #endif return acceptedDescriptor; } static bool multicastMembershipHelper(QNativeSocketEnginePrivate *d, int how6, int how4, const QHostAddress &groupAddress, const QNetworkInterface &iface) { int level = 0; int sockOpt = 0; char *sockArg; int sockArgSize; struct ip_mreq mreq4; #ifndef QT_NO_IPV6 struct ipv6_mreq mreq6; if (groupAddress.protocol() == QAbstractSocket::IPv6Protocol) { level = IPPROTO_IPV6; sockOpt = how6; sockArg = reinterpret_cast(&mreq6); sockArgSize = sizeof(mreq6); memset(&mreq6, 0, sizeof(mreq6)); Q_IPV6ADDR ip6 = groupAddress.toIPv6Address(); memcpy(&mreq6.ipv6mr_multiaddr, &ip6, sizeof(ip6)); mreq6.ipv6mr_interface = iface.index(); } else #endif if (groupAddress.protocol() == QAbstractSocket::IPv4Protocol) { level = IPPROTO_IP; sockOpt = how4; sockArg = reinterpret_cast(&mreq4); sockArgSize = sizeof(mreq4); memset(&mreq4, 0, sizeof(mreq4)); mreq4.imr_multiaddr.s_addr = htonl(groupAddress.toIPv4Address()); if (iface.isValid()) { QList addressEntries = iface.addressEntries(); if (!addressEntries.isEmpty()) { QHostAddress firstIP = addressEntries.first().ip(); mreq4.imr_interface.s_addr = htonl(firstIP.toIPv4Address()); } else { d->setError(QAbstractSocket::NetworkError, QNativeSocketEnginePrivate::NetworkUnreachableErrorString); return false; } } else { mreq4.imr_interface.s_addr = INADDR_ANY; } } else { // unreachable d->setError(QAbstractSocket::UnsupportedSocketOperationError, QNativeSocketEnginePrivate::ProtocolUnsupportedErrorString); return false; } int res = setsockopt(d->socketDescriptor, level, sockOpt, sockArg, sockArgSize); if (res == -1) { d->setError(QAbstractSocket::UnsupportedSocketOperationError, QNativeSocketEnginePrivate::OperationUnsupportedErrorString); return false; } return true; } bool QNativeSocketEnginePrivate::nativeJoinMulticastGroup(const QHostAddress &groupAddress, const QNetworkInterface &iface) { return multicastMembershipHelper(this, #ifndef QT_NO_IPV6 IPV6_JOIN_GROUP, #else 0, #endif IP_ADD_MEMBERSHIP, groupAddress, iface); } bool QNativeSocketEnginePrivate::nativeLeaveMulticastGroup(const QHostAddress &groupAddress, const QNetworkInterface &iface) { return multicastMembershipHelper(this, #ifndef QT_NO_IPV6 IPV6_LEAVE_GROUP, #else 0, #endif IP_DROP_MEMBERSHIP, groupAddress, iface); } QNetworkInterface QNativeSocketEnginePrivate::nativeMulticastInterface() const { #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { uint v; QT_SOCKOPTLEN_T sizeofv = sizeof(v); if (::getsockopt(socketDescriptor, IPPROTO_IPV6, IPV6_MULTICAST_IF, (char *) &v, &sizeofv) == -1) return QNetworkInterface(); return QNetworkInterface::interfaceFromIndex(v); } #endif struct in_addr v; v.s_addr = 0; QT_SOCKOPTLEN_T sizeofv = sizeof(v); if (::getsockopt(socketDescriptor, IPPROTO_IP, IP_MULTICAST_IF, (char *) &v, &sizeofv) == -1) return QNetworkInterface(); if (v.s_addr != 0 && sizeofv >= QT_SOCKOPTLEN_T(sizeof(v))) { QHostAddress ipv4(ntohl(v.s_addr)); QList ifaces = QNetworkInterface::allInterfaces(); for (int i = 0; i < ifaces.count(); ++i) { const QNetworkInterface &iface = ifaces.at(i); if (!(iface.flags() & QNetworkInterface::CanMulticast)) continue; QList entries = iface.addressEntries(); for (int j = 0; j < entries.count(); ++j) { const QNetworkAddressEntry &entry = entries.at(j); if (entry.ip() == ipv4) return iface; } } } return QNetworkInterface(); } bool QNativeSocketEnginePrivate::nativeSetMulticastInterface(const QNetworkInterface &iface) { #ifndef QT_NO_IPV6 if (socketProtocol == QAbstractSocket::IPv6Protocol) { uint v = iface.isValid() ? iface.index() : 0; return (::setsockopt(socketDescriptor, IPPROTO_IPV6, IPV6_MULTICAST_IF, (char *) &v, sizeof(v)) != -1); } #endif struct in_addr v; if (iface.isValid()) { QList entries = iface.addressEntries(); for (int i = 0; i < entries.count(); ++i) { const QNetworkAddressEntry &entry = entries.at(i); const QHostAddress &ip = entry.ip(); if (ip.protocol() == QAbstractSocket::IPv4Protocol) { v.s_addr = htonl(ip.toIPv4Address()); int r = ::setsockopt(socketDescriptor, IPPROTO_IP, IP_MULTICAST_IF, (char *) &v, sizeof(v)); if (r != -1) return true; } } return false; } v.s_addr = INADDR_ANY; return (::setsockopt(socketDescriptor, IPPROTO_IP, IP_MULTICAST_IF, (char *) &v, sizeof(v)) != -1); } qint64 QNativeSocketEnginePrivate::nativeBytesAvailable() const { unsigned long nbytes = 0; unsigned long dummy = 0; DWORD sizeWritten = 0; if (::WSAIoctl(socketDescriptor, FIONREAD, &dummy, sizeof(dummy), &nbytes, sizeof(nbytes), &sizeWritten, 0,0) == SOCKET_ERROR) { WS_ERROR_DEBUG(WSAGetLastError()); return -1; } // ioctlsocket sometimes reports 1 byte available for datagrams // while the following recvfrom returns -1 and claims connection // was reset (udp is connectionless). so we peek one byte to // catch this case and return 0 bytes available if recvfrom // fails. if (nbytes == 1 && socketType == QAbstractSocket::UdpSocket) { char c; WSABUF buf; buf.buf = &c; buf.len = sizeof(c); DWORD flags = MSG_PEEK; if (::WSARecvFrom(socketDescriptor, &buf, 1, 0, &flags, 0,0,0,0) == SOCKET_ERROR) return 0; } return nbytes; } bool QNativeSocketEnginePrivate::nativeHasPendingDatagrams() const { #if !defined(Q_OS_WINCE) // Create a sockaddr struct and reset its port number. qt_sockaddr storage; QT_SOCKLEN_T storageSize = sizeof(storage); memset(&storage, 0, storageSize); bool result = false; // Peek 0 bytes into the next message. The size of the message may // well be 0, so we check if there was a sender. char c; WSABUF buf; buf.buf = &c; buf.len = sizeof(c); DWORD available = 0; DWORD flags = MSG_PEEK; int ret = ::WSARecvFrom(socketDescriptor, &buf, 1, &available, &flags, &storage.a, &storageSize,0,0); int err = WSAGetLastError(); if (ret == SOCKET_ERROR && err != WSAEMSGSIZE) { WS_ERROR_DEBUG(err); if (err == WSAECONNRESET || err == WSAENETRESET) { // Discard error message to prevent QAbstractSocket from // getting this message repeatedly after reenabling the // notifiers. flags = 0; ::WSARecvFrom(socketDescriptor, &buf, 1, &available, &flags, &storage.a, &storageSize, 0, 0); } } else { // If there's no error, or if our buffer was too small, there must be // a pending datagram. result = true; } #else // Q_OS_WINCE bool result = false; fd_set readS; FD_ZERO(&readS); FD_SET((SOCKET)socketDescriptor, &readS); timeval timeout; timeout.tv_sec = 0; timeout.tv_usec = 5000; int available = ::select(1, &readS, 0, 0, &timeout); result = available > 0 ? true : false; #endif #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeHasPendingDatagrams() == %s", result ? "true" : "false"); #endif return result; } qint64 QNativeSocketEnginePrivate::nativePendingDatagramSize() const { qint64 ret = -1; #if !defined(Q_OS_WINCE) int recvResult = 0; DWORD flags; DWORD bufferCount = 5; WSABUF * buf = 0; for (;;) { // the data written to udpMessagePeekBuffer is discarded, so // this function is still reentrant although it might not look // so. static char udpMessagePeekBuffer[8192]; buf = new WSABUF[bufferCount]; for (DWORD i=0; i maxLength ? maxLength : qint64(bytesRead); } else { WS_ERROR_DEBUG(err); setError(QAbstractSocket::NetworkError, ReceiveDatagramErrorString); ret = -1; } } else { ret = qint64(bytesRead); } qt_socket_getPortAndAddress(socketDescriptor, &aa, port, address); #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeReceiveDatagram(%p \"%s\", %li, %s, %i) == %li", data, qt_prettyDebug(data, qMin(ret, 16), ret).data(), maxLength, address ? address->toString().toLatin1().constData() : "(nil)", port ? *port : 0, ret); #endif return ret; } qint64 QNativeSocketEnginePrivate::nativeSendDatagram(const char *data, qint64 len, const QHostAddress &address, quint16 port) { qint64 ret = -1; struct sockaddr_in sockAddrIPv4; qt_sockaddr_in6 sockAddrIPv6; struct sockaddr *sockAddrPtr = 0; QT_SOCKLEN_T sockAddrSize = 0; qt_socket_setPortAndAddress(socketDescriptor, &sockAddrIPv4, &sockAddrIPv6, port, address, &sockAddrPtr, &sockAddrSize); WSABUF buf; #if !defined(Q_OS_WINCE) buf.buf = len ? (char*)data : 0; #else char tmp; buf.buf = len ? (char*)data : &tmp; #endif buf.len = len; DWORD flags = 0; DWORD bytesSent = 0; if (::WSASendTo(socketDescriptor, &buf, 1, &bytesSent, flags, sockAddrPtr, sockAddrSize, 0,0) == SOCKET_ERROR) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSAEMSGSIZE: setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString); break; default: setError(QAbstractSocket::NetworkError, SendDatagramErrorString); break; } ret = -1; } else { ret = qint64(bytesSent); } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeSendDatagram(%p \"%s\", %li, \"%s\", %i) == %li", data, qt_prettyDebug(data, qMin(len, 16), len).data(), 0, address.toString().toLatin1().constData(), port, ret); #endif return ret; } qint64 QNativeSocketEnginePrivate::nativeWrite(const char *data, qint64 len) { Q_Q(QNativeSocketEngine); qint64 ret = 0; qint64 bytesToSend = len; for (;;) { WSABUF buf; buf.buf = (char*)data + ret; buf.len = bytesToSend; DWORD flags = 0; DWORD bytesWritten = 0; int socketRet = ::WSASend(socketDescriptor, &buf, 1, &bytesWritten, flags, 0,0); ret += qint64(bytesWritten); int err; if (socketRet != SOCKET_ERROR) { if (ret == len) break; else continue; } else if ((err = WSAGetLastError()) == WSAEWOULDBLOCK) { break; } else if (err == WSAENOBUFS) { // this function used to not send more than 49152 per call to WSASendTo // to avoid getting a WSAENOBUFS. However this is a performance regression // and we think it only appears with old windows versions. We now handle the // WSAENOBUFS and hope it never appears anyway. // just go on, the next loop run we will try a smaller number } else { WS_ERROR_DEBUG(err); switch (err) { case WSAECONNRESET: case WSAECONNABORTED: ret = -1; setError(QAbstractSocket::NetworkError, WriteErrorString); q->close(); break; default: break; } break; } // for next send: bytesToSend = qMin(49152, len - ret); } #if defined (QNATIVESOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeWrite(%p \"%s\", %li) == %li", data, qt_prettyDebug(data, qMin((int)ret, 16), (int)ret).data(), (int)len, (int)ret); #endif return ret; } qint64 QNativeSocketEnginePrivate::nativeRead(char *data, qint64 maxLength) { qint64 ret = -1; WSABUF buf; buf.buf = data; buf.len = maxLength; DWORD flags = 0; DWORD bytesRead = 0; #if defined(Q_OS_WINCE) WSASetLastError(0); #endif if (::WSARecv(socketDescriptor, &buf, 1, &bytesRead, &flags, 0,0) == SOCKET_ERROR) { int err = WSAGetLastError(); WS_ERROR_DEBUG(err); switch (err) { case WSAEWOULDBLOCK: ret = -2; break; case WSAEBADF: case WSAEINVAL: //error string is now set in read(), not here in nativeRead() break; case WSAECONNRESET: case WSAECONNABORTED: // for tcp sockets this will be handled in QNativeSocketEngine::read ret = 0; break; default: break; } } else { if (WSAGetLastError() == WSAEWOULDBLOCK) ret = -2; else ret = qint64(bytesRead); } #if defined (QNATIVESOCKETENGINE_DEBUG) if (ret != -2) { qDebug("QNativeSocketEnginePrivate::nativeRead(%p \"%s\", %l) == %li", data, qt_prettyDebug(data, qMin((int)bytesRead, 16), (int)bytesRead).data(), (int)maxLength, (int)ret); } else { qDebug("QNativeSocketEnginePrivate::nativeRead(%p, %l) == -2 (WOULD BLOCK)", data, int(maxLength)); } #endif return ret; } int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool selectForRead) const { bool readEnabled = selectForRead && readNotifier && readNotifier->isEnabled(); if (readEnabled) readNotifier->setEnabled(false); fd_set fds; int ret = 0; memset(&fds, 0, sizeof(fd_set)); fds.fd_count = 1; fds.fd_array[0] = (SOCKET)socketDescriptor; struct timeval tv; tv.tv_sec = timeout / 1000; tv.tv_usec = (timeout % 1000) * 1000; if (selectForRead) { ret = select(0, &fds, 0, 0, timeout < 0 ? 0 : &tv); } else { // select for write // Windows needs this to report errors when connecting a socket ... fd_set fdexception; FD_ZERO(&fdexception); FD_SET((SOCKET)socketDescriptor, &fdexception); ret = select(0, 0, &fds, &fdexception, timeout < 0 ? 0 : &tv); // ... but if it is actually set, pretend it did not happen if (ret > 0 && FD_ISSET((SOCKET)socketDescriptor, &fdexception)) ret--; } if (readEnabled) readNotifier->setEnabled(true); return ret; } int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool checkRead, bool checkWrite, bool *selectForRead, bool *selectForWrite) const { bool readEnabled = checkRead && readNotifier && readNotifier->isEnabled(); if (readEnabled) readNotifier->setEnabled(false); fd_set fdread; fd_set fdwrite; fd_set fdexception; int ret = 0; memset(&fdread, 0, sizeof(fd_set)); if (checkRead) { fdread.fd_count = 1; fdread.fd_array[0] = (SOCKET)socketDescriptor; } memset(&fdwrite, 0, sizeof(fd_set)); FD_ZERO(&fdexception); if (checkWrite) { fdwrite.fd_count = 1; fdwrite.fd_array[0] = (SOCKET)socketDescriptor; // Windows needs this to report errors when connecting a socket FD_SET((SOCKET)socketDescriptor, &fdexception); } struct timeval tv; tv.tv_sec = timeout / 1000; tv.tv_usec = (timeout % 1000) * 1000; #if !defined(Q_OS_WINCE) ret = select(socketDescriptor + 1, &fdread, &fdwrite, &fdexception, timeout < 0 ? 0 : &tv); #else ret = select(1, &fdread, &fdwrite, &fdexception, timeout < 0 ? 0 : &tv); #endif //... but if it is actually set, pretend it did not happen if (ret > 0 && FD_ISSET((SOCKET)socketDescriptor, &fdexception)) ret--; if (readEnabled) readNotifier->setEnabled(true); if (ret <= 0) return ret; *selectForRead = FD_ISSET((SOCKET)socketDescriptor, &fdread); *selectForWrite = FD_ISSET((SOCKET)socketDescriptor, &fdwrite); return ret; } void QNativeSocketEnginePrivate::nativeClose() { #if defined (QTCPSOCKETENGINE_DEBUG) qDebug("QNativeSocketEnginePrivate::nativeClose()"); #endif // We were doing a setsockopt here before with SO_DONTLINGER. (However with kind of wrong // usage of parameters, it wants a BOOL but we used a struct and pretended it to be bool). // We don't think setting this option should be done here, if a user wants it she/he can // do it manually with socketDescriptor()/setSocketDescriptor(); ::closesocket(socketDescriptor); } QT_END_NAMESPACE