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|
/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the QtNetwork module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** 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, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
//#define QNATIVESOCKETENGINE_DEBUG
#include "qnativesocketengine_p.h"
#include "qiodevice.h"
#include "qhostaddress.h"
#include "qvarlengtharray.h"
#include "qdatetime.h"
#include <time.h>
#include <errno.h>
#include <fcntl.h>
#ifndef QT_NO_IPV6IFNAME
#include <net/if.h>
#endif
#ifndef QT_NO_IPV6IFNAME
#include <net/if.h>
#endif
#ifdef QT_LINUXBASE
#include <arpa/inet.h>
#endif
#ifdef Q_OS_SYMBIAN
#include <private/qeventdispatcher_symbian_p.h>
#endif
#if defined QNATIVESOCKETENGINE_DEBUG
#include <qstring.h>
#include <ctype.h>
#endif
QT_BEGIN_NAMESPACE
#if defined QNATIVESOCKETENGINE_DEBUG
/*
Returns a human readable representation of the first \a len
characters in \a data.
*/
static QByteArray qt_prettyDebug(const char *data, int len, int maxSize)
{
if (!data) return "(null)";
QByteArray out;
for (int i = 0; i < len; ++i) {
char c = data[i];
if (isprint(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();
}
}
if (len < maxSize)
out += "...";
return out;
}
#endif
static void qt_ignore_sigpipe()
{
#ifndef Q_NO_POSIX_SIGNALS
// Set to ignore SIGPIPE once only.
static QBasicAtomicInt atom = Q_BASIC_ATOMIC_INITIALIZER(0);
if (atom.testAndSetRelaxed(0, 1)) {
struct sigaction noaction;
memset(&noaction, 0, sizeof(noaction));
noaction.sa_handler = SIG_IGN;
::sigaction(SIGPIPE, &noaction, 0);
}
#else
// Posix signals are not supported by the underlying platform
// so we don't need to ignore sigpipe signal explicitly
#endif
}
/*
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(const qt_sockaddr *s, quint16 *port, QHostAddress *addr)
{
#if !defined(QT_NO_IPV6)
if (s->a.sa_family == AF_INET6) {
Q_IPV6ADDR tmp;
memcpy(&tmp, &s->a6.sin6_addr, sizeof(tmp));
if (addr) {
QHostAddress tmpAddress;
tmpAddress.setAddress(tmp);
*addr = tmpAddress;
#ifndef QT_NO_IPV6IFNAME
char scopeid[IFNAMSIZ];
if (::if_indextoname(s->a6.sin6_scope_id, scopeid)) {
addr->setScopeId(QLatin1String(scopeid));
} else
#endif
addr->setScopeId(QString::number(s->a6.sin6_scope_id));
}
if (port)
*port = ntohs(s->a6.sin6_port);
return;
}
#endif
if (port)
*port = ntohs(s->a4.sin_port);
if (addr) {
QHostAddress tmpAddress;
tmpAddress.setAddress(ntohl(s->a4.sin_addr.s_addr));
*addr = tmpAddress;
}
}
/*! \internal
Creates and returns a new socket descriptor of type \a socketType
and \a socketProtocol. Returns -1 on failure.
*/
bool QNativeSocketEnginePrivate::createNewSocket(QAbstractSocket::SocketType socketType,
QAbstractSocket::NetworkLayerProtocol socketProtocol)
{
#ifndef QT_NO_IPV6
int protocol = (socketProtocol == QAbstractSocket::IPv6Protocol) ? AF_INET6 : AF_INET;
#else
Q_UNUSED(socketProtocol);
int protocol = AF_INET;
#endif
int type = (socketType == QAbstractSocket::UdpSocket) ? SOCK_DGRAM : SOCK_STREAM;
int socket = qt_socket_socket(protocol, type, 0);
if (socket <= 0) {
switch (errno) {
case EPROTONOSUPPORT:
case EAFNOSUPPORT:
case EINVAL:
setError(QAbstractSocket::UnsupportedSocketOperationError, ProtocolUnsupportedErrorString);
break;
case ENFILE:
case EMFILE:
case ENOBUFS:
case ENOMEM:
setError(QAbstractSocket::SocketResourceError, ResourceErrorString);
break;
case EACCES:
setError(QAbstractSocket::SocketAccessError, AccessErrorString);
break;
default:
break;
}
return false;
}
// Ensure that the socket is closed on exec*().
qt_socket_fcntl(socket, F_SETFD, FD_CLOEXEC);
socketDescriptor = socket;
return true;
}
/*
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;
switch (opt) {
case QNativeSocketEngine::ReceiveBufferSocketOption:
n = SO_RCVBUF;
break;
case QNativeSocketEngine::SendBufferSocketOption:
n = SO_SNDBUF;
break;
case QNativeSocketEngine::NonBlockingSocketOption:
break;
case QNativeSocketEngine::BroadcastSocketOption:
break;
case QNativeSocketEngine::AddressReusable:
n = SO_REUSEADDR;
break;
case QNativeSocketEngine::BindExclusively:
return true;
case QNativeSocketEngine::ReceiveOutOfBandData:
n = SO_OOBINLINE;
break;
}
int v = -1;
QT_SOCKOPTLEN_T len = sizeof(v);
if (qt_socket_getsockopt(socketDescriptor, SOL_SOCKET, n, (char *) &v, &len) != -1)
return v;
return -1;
}
/*
Sets the socket option \a opt to \a v.
*/
bool QNativeSocketEnginePrivate::setOption(QNativeSocketEngine::SocketOption opt, int v)
{
Q_Q(QNativeSocketEngine);
if (!q->isValid())
return false;
int n = 0;
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: {
// Make the socket nonblocking.
int flags = qt_socket_fcntl(socketDescriptor, F_GETFL, 0);
if (flags == -1) {
#ifdef QNATIVESOCKETENGINE_DEBUG
perror("QNativeSocketEnginePrivate::setOption(): fcntl(F_GETFL) failed");
#endif
return false;
}
if (qt_socket_fcntl(socketDescriptor, F_SETFL, flags | O_NONBLOCK) == -1) {
#ifdef QNATIVESOCKETENGINE_DEBUG
perror("QNativeSocketEnginePrivate::setOption(): fcntl(F_SETFL) failed");
#endif
return false;
}
return true;
}
case QNativeSocketEngine::AddressReusable:
#ifdef Q_OS_SYMBIAN
n = SO_REUSEADDR;
#elif SO_REUSEPORT
n = SO_REUSEPORT;
#else
n = SO_REUSEADDR;
#endif
break;
case QNativeSocketEngine::BindExclusively:
return true;
case QNativeSocketEngine::ReceiveOutOfBandData:
n = SO_OOBINLINE;
break;
}
return qt_socket_setsockopt(socketDescriptor, SOL_SOCKET, n, (char *) &v, sizeof(v)) == 0;
}
bool QNativeSocketEnginePrivate::nativeConnect(const QHostAddress &addr, quint16 port)
{
#ifdef QNATIVESOCKETENGINE_DEBUG
qDebug("QNativeSocketEnginePrivate::nativeConnect() : %d ", socketDescriptor);
#endif
struct sockaddr_in sockAddrIPv4;
struct sockaddr *sockAddrPtr = 0;
QT_SOCKLEN_T sockAddrSize = 0;
#if !defined(QT_NO_IPV6)
struct sockaddr_in6 sockAddrIPv6;
if (addr.protocol() == QAbstractSocket::IPv6Protocol) {
memset(&sockAddrIPv6, 0, sizeof(sockAddrIPv6));
sockAddrIPv6.sin6_family = AF_INET6;
sockAddrIPv6.sin6_port = htons(port);
#ifndef QT_NO_IPV6IFNAME
sockAddrIPv6.sin6_scope_id = ::if_nametoindex(addr.scopeId().toLatin1().data());
#else
sockAddrIPv6.sin6_scope_id = addr.scopeId().toInt();
#endif
Q_IPV6ADDR ip6 = addr.toIPv6Address();
memcpy(&sockAddrIPv6.sin6_addr.s6_addr, &ip6, sizeof(ip6));
sockAddrSize = sizeof(sockAddrIPv6);
sockAddrPtr = (struct sockaddr *) &sockAddrIPv6;
} else
#if 0
{}
#endif
#endif
if (addr.protocol() == QAbstractSocket::IPv4Protocol) {
memset(&sockAddrIPv4, 0, sizeof(sockAddrIPv4));
sockAddrIPv4.sin_family = AF_INET;
sockAddrIPv4.sin_port = htons(port);
sockAddrIPv4.sin_addr.s_addr = htonl(addr.toIPv4Address());
sockAddrSize = sizeof(sockAddrIPv4);
sockAddrPtr = (struct sockaddr *) &sockAddrIPv4;
} else {
// unreachable
}
int connectResult = qt_socket_connect(socketDescriptor, sockAddrPtr, sockAddrSize);
if (connectResult == -1) {
switch (errno) {
case EISCONN:
socketState = QAbstractSocket::ConnectedState;
break;
case ECONNREFUSED:
case EINVAL:
setError(QAbstractSocket::ConnectionRefusedError, ConnectionRefusedErrorString);
socketState = QAbstractSocket::UnconnectedState;
break;
case ETIMEDOUT:
setError(QAbstractSocket::NetworkError, ConnectionTimeOutErrorString);
break;
case EHOSTUNREACH:
setError(QAbstractSocket::NetworkError, HostUnreachableErrorString);
socketState = QAbstractSocket::UnconnectedState;
break;
case ENETUNREACH:
setError(QAbstractSocket::NetworkError, NetworkUnreachableErrorString);
socketState = QAbstractSocket::UnconnectedState;
break;
case EADDRINUSE:
setError(QAbstractSocket::NetworkError, AddressInuseErrorString);
break;
case EINPROGRESS:
case EALREADY:
setError(QAbstractSocket::UnfinishedSocketOperationError, InvalidSocketErrorString);
socketState = QAbstractSocket::ConnectingState;
break;
case EAGAIN:
setError(QAbstractSocket::UnfinishedSocketOperationError, InvalidSocketErrorString);
setError(QAbstractSocket::SocketResourceError, ResourceErrorString);
break;
case EACCES:
case EPERM:
setError(QAbstractSocket::SocketAccessError, AccessErrorString);
socketState = QAbstractSocket::UnconnectedState;
break;
case EAFNOSUPPORT:
case EBADF:
case EFAULT:
case ENOTSOCK:
socketState = QAbstractSocket::UnconnectedState;
default:
break;
}
if (socketState != QAbstractSocket::ConnectedState) {
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeConnect(%s, %i) == false (%s)",
addr.toString().toLatin1().constData(), port,
socketState == QAbstractSocket::ConnectingState
? "Connection in progress" : socketErrorString.toLatin1().constData());
#endif
return false;
}
}
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeConnect(%s, %i) == true",
addr.toString().toLatin1().constData(), port);
#endif
socketState = QAbstractSocket::ConnectedState;
return true;
}
bool QNativeSocketEnginePrivate::nativeBind(const QHostAddress &address, 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 (address.protocol() == QAbstractSocket::IPv6Protocol) {
memset(&sockAddrIPv6, 0, sizeof(sockAddrIPv6));
sockAddrIPv6.sin6_family = AF_INET6;
sockAddrIPv6.sin6_port = htons(port);
#ifndef QT_NO_IPV6IFNAME
sockAddrIPv6.sin6_scope_id = ::if_nametoindex(address.scopeId().toLatin1().data());
#else
sockAddrIPv6.sin6_scope_id = address.scopeId().toInt();
#endif
Q_IPV6ADDR tmp = address.toIPv6Address();
memcpy(&sockAddrIPv6.sin6_addr.s6_addr, &tmp, sizeof(tmp));
sockAddrSize = sizeof(sockAddrIPv6);
sockAddrPtr = (struct sockaddr *) &sockAddrIPv6;
} else
#endif
if (address.protocol() == QAbstractSocket::IPv4Protocol) {
memset(&sockAddrIPv4, 0, sizeof(sockAddrIPv4));
sockAddrIPv4.sin_family = AF_INET;
sockAddrIPv4.sin_port = htons(port);
sockAddrIPv4.sin_addr.s_addr = htonl(address.toIPv4Address());
sockAddrSize = sizeof(sockAddrIPv4);
sockAddrPtr = (struct sockaddr *) &sockAddrIPv4;
} else {
// unreachable
}
int bindResult = qt_socket_bind(socketDescriptor, sockAddrPtr, sockAddrSize);
if (bindResult < 0) {
switch(errno) {
case EADDRINUSE:
setError(QAbstractSocket::AddressInUseError, AddressInuseErrorString);
break;
case EACCES:
setError(QAbstractSocket::SocketAccessError, AddressProtectedErrorString);
break;
case EINVAL:
setError(QAbstractSocket::UnsupportedSocketOperationError, OperationUnsupportedErrorString);
break;
case EADDRNOTAVAIL:
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 (qt_socket_listen(socketDescriptor, backlog) < 0) {
switch (errno) {
case EADDRINUSE:
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 = qt_socket_accept(socketDescriptor, 0, 0);
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeAccept() == %i", acceptedDescriptor);
#endif
//check if we have vaild descriptor at all
if(acceptedDescriptor > 0) {
// Ensure that the socket is closed on exec*()
qt_socket_fcntl(acceptedDescriptor, F_SETFD, FD_CLOEXEC);
} else {
qWarning("QNativeSocketEnginePrivate::nativeAccept() - acceptedDescriptor <= 0");
}
return acceptedDescriptor;
}
qint64 QNativeSocketEnginePrivate::nativeBytesAvailable() const
{
int nbytes = 0;
// gives shorter than true amounts on Unix domain sockets.
qint64 available = 0;
if (::ioctl(socketDescriptor, FIONREAD, (char *) &nbytes) >= 0)
available = (qint64) nbytes;
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeBytesAvailable() == %lli", available);
#endif
return available;
}
bool QNativeSocketEnginePrivate::nativeHasPendingDatagrams() const
{
// Create a sockaddr struct and reset its port number.
qt_sockaddr storage;
QT_SOCKLEN_T storageSize = sizeof(storage);
memset(&storage, 0, storageSize);
// Peek 0 bytes into the next message. The size of the message may
// well be 0, so we can't check recvfrom's return value.
ssize_t readBytes;
do {
char c;
readBytes = qt_socket_recvfrom(socketDescriptor, &c, 1, MSG_PEEK, &storage.a, &storageSize);
} while (readBytes == -1 && errno == EINTR);
// If there's no error, or if our buffer was too small, there must be a
// pending datagram.
bool result = (readBytes != -1) || errno == EMSGSIZE;
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeHasPendingDatagrams() == %s",
result ? "true" : "false");
#endif
return result;
}
#ifdef Q_OS_SYMBIAN
qint64 QNativeSocketEnginePrivate::nativePendingDatagramSize() const
{
size_t nbytes = 0;
qt_socket_ioctl(socketDescriptor, E32IONREAD, (char *) &nbytes);
return qint64(nbytes-28);
}
#else
qint64 QNativeSocketEnginePrivate::nativePendingDatagramSize() const
{
QVarLengthArray<char, 8192> udpMessagePeekBuffer(8192);
ssize_t recvResult = -1;
for (;;) {
// the data written to udpMessagePeekBuffer is discarded, so
// this function is still reentrant although it might not look
// so.
recvResult = qt_socket_recv(socketDescriptor, udpMessagePeekBuffer.data(),
udpMessagePeekBuffer.size(), MSG_PEEK);
if (recvResult == -1 && errno == EINTR)
continue;
if (recvResult != (ssize_t) udpMessagePeekBuffer.size())
break;
udpMessagePeekBuffer.resize(udpMessagePeekBuffer.size() * 2);
}
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativePendingDatagramSize() == %i", recvResult);
#endif
return qint64(recvResult);
}
#endif
qint64 QNativeSocketEnginePrivate::nativeReceiveDatagram(char *data, qint64 maxSize,
QHostAddress *address, quint16 *port)
{
qt_sockaddr aa;
memset(&aa, 0, sizeof(aa));
QT_SOCKLEN_T sz;
sz = sizeof(aa);
ssize_t recvFromResult = 0;
do {
char c;
recvFromResult = qt_socket_recvfrom(socketDescriptor, maxSize ? data : &c, maxSize ? maxSize : 1,
0, &aa.a, &sz);
} while (recvFromResult == -1 && errno == EINTR);
if (recvFromResult == -1) {
setError(QAbstractSocket::NetworkError, ReceiveDatagramErrorString);
} else if (port || address) {
qt_socket_getPortAndAddress(&aa, port, address);
}
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeReceiveDatagram(%p \"%s\", %lli, %s, %i) == %lli",
data, qt_prettyDebug(data, qMin(recvFromResult, ssize_t(16)), recvFromResult).data(), maxSize,
address ? address->toString().toLatin1().constData() : "(nil)",
port ? *port : 0, (qint64) recvFromResult);
#endif
return qint64(maxSize ? recvFromResult : recvFromResult == -1 ? -1 : 0);
}
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));
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;
do {
sentBytes = qt_socket_sendto(socketDescriptor, data, len,
0, sockAddrPtr, sockAddrSize);
} while (sentBytes == -1 && errno == EINTR);
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);
}
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 (qt_socket_getsockname(socketDescriptor, &sa.a, &sockAddrSize) == 0) {
qt_socket_getPortAndAddress(&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 if (errno == EBADF) {
setError(QAbstractSocket::UnsupportedSocketOperationError, InvalidSocketErrorString);
return false;
}
// Determine the remote address
if (!qt_socket_getpeername(socketDescriptor, &sa.a, &sockAddrSize))
qt_socket_getPortAndAddress(&sa, &peerPort, &peerAddress);
// Determine the socket type (UDP/TCP)
int value = 0;
QT_SOCKOPTLEN_T valueSize = sizeof(int);
if (qt_socket_getsockopt(socketDescriptor, SOL_SOCKET, SO_TYPE, &value, &valueSize) == 0) {
if (value == SOCK_STREAM)
socketType = QAbstractSocket::TcpSocket;
else if (value == SOCK_DGRAM)
socketType = QAbstractSocket::UdpSocket;
else
socketType = QAbstractSocket::UnknownSocketType;
}
#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() local == %s:%i,"
" peer == %s:%i, socket == %s - %s",
localAddress.toString().toLatin1().constData(), localPort,
peerAddress.toString().toLatin1().constData(), peerPort,socketTypeStr.toLatin1().constData(),
socketProtocolStr.toLatin1().constData());
#endif
return true;
}
void QNativeSocketEnginePrivate::nativeClose()
{
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEngine::nativeClose()");
#endif
qt_socket_close(socketDescriptor);
}
qint64 QNativeSocketEnginePrivate::nativeWrite(const char *data, qint64 len)
{
Q_Q(QNativeSocketEngine);
// ignore the SIGPIPE signal
qt_ignore_sigpipe();
// loop while ::write() returns -1 and errno == EINTR, in case
// of an interrupting signal.
ssize_t writtenBytes;
do {
writtenBytes = qt_socket_write(socketDescriptor, data, len);
} while (writtenBytes < 0 && errno == EINTR);
if (writtenBytes < 0) {
switch (errno) {
case EPIPE:
case ECONNRESET:
writtenBytes = -1;
setError(QAbstractSocket::RemoteHostClosedError, RemoteHostClosedErrorString);
q->close();
break;
case EAGAIN:
writtenBytes = 0;
break;
case EMSGSIZE:
setError(QAbstractSocket::DatagramTooLargeError, DatagramTooLargeErrorString);
break;
default:
break;
}
}
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeWrite(%p \"%s\", %llu) == %i",
data, qt_prettyDebug(data, qMin((int) len, 16),
(int) len).data(), len, (int) writtenBytes);
#endif
return qint64(writtenBytes);
}
/*
*/
qint64 QNativeSocketEnginePrivate::nativeRead(char *data, qint64 maxSize)
{
Q_Q(QNativeSocketEngine);
if (!q->isValid()) {
qWarning("QNativeSocketEngine::unbufferedRead: Invalid socket");
return -1;
}
ssize_t r = 0;
do {
r = qt_socket_read(socketDescriptor, data, maxSize);
} while (r == -1 && errno == EINTR);
if (r < 0) {
r = -1;
switch (errno) {
#if EWOULDBLOCK-0 && EWOULDBLOCK != EAGAIN
case EWOULDBLOCK:
#endif
case EAGAIN:
// No data was available for reading
r = -2;
break;
case EBADF:
case EINVAL:
case EIO:
setError(QAbstractSocket::NetworkError, ReadErrorString);
break;
#ifdef Q_OS_SYMBIAN
case EPIPE:
#endif
case ECONNRESET:
r = 0;
break;
default:
break;
}
}
#if defined (QNATIVESOCKETENGINE_DEBUG)
qDebug("QNativeSocketEnginePrivate::nativeRead(%p \"%s\", %llu) == %i",
data, qt_prettyDebug(data, qMin(r, ssize_t(16)), r).data(),
maxSize, r);
#endif
return qint64(r);
}
int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool selectForRead) const
{
fd_set fds;
FD_ZERO(&fds);
FD_SET(socketDescriptor, &fds);
struct timeval tv;
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
#ifdef Q_OS_SYMBIAN
fd_set fdexec;
FD_ZERO(&fdexec);
FD_SET(socketDescriptor, &fdexec);
#endif
QTime timer;
timer.start();
int retval;
do {
if (selectForRead)
#ifndef Q_OS_SYMBIAN
retval = qt_socket_select(socketDescriptor + 1, &fds, 0, 0, timeout < 0 ? 0 : &tv);
#else
retval = qt_socket_select(socketDescriptor + 1, &fds, 0, &fdexec, timeout < 0 ? 0 : &tv);
#endif
else
#ifndef Q_OS_SYMBIAN
retval = qt_socket_select(socketDescriptor + 1, 0, &fds, 0, timeout < 0 ? 0 : &tv);
#else
retval = qt_socket_select(socketDescriptor + 1, 0, &fds, &fdexec, timeout < 0 ? 0 : &tv);
#endif
#ifdef Q_OS_SYMBIAN
bool selectForExec = false;
if(retval != 0) {
if(retval < 0) {
qWarning("nativeSelect(....) returned < 0 for socket %d", socketDescriptor);
}
selectForExec = FD_ISSET(socketDescriptor, &fdexec);
}
if(selectForExec) {
qWarning("nativeSelect (selectForRead %d, retVal %d, errno %d) Unexpected expectfds ready in fd %d",
selectForRead, retval, errno, socketDescriptor);
}
#endif
if (retval != -1 || errno != EINTR) {
break;
}
if (timeout > 0) {
// recalculate the timeout
int t = timeout - timer.elapsed();
if (t < 0) {
// oops, timeout turned negative?
retval = -1;
break;
}
tv.tv_sec = t / 1000;
tv.tv_usec = (t % 1000) * 1000;
}
} while (true);
return retval;
}
int QNativeSocketEnginePrivate::nativeSelect(int timeout, bool checkRead, bool checkWrite,
bool *selectForRead, bool *selectForWrite) const
{
fd_set fdread;
FD_ZERO(&fdread);
if (checkRead)
FD_SET(socketDescriptor, &fdread);
fd_set fdwrite;
FD_ZERO(&fdwrite);
if (checkWrite)
FD_SET(socketDescriptor, &fdwrite);
#ifdef Q_OS_SYMBIAN
fd_set fdexec;
FD_ZERO(&fdexec);
FD_SET(socketDescriptor, &fdexec);
#endif
struct timeval tv;
tv.tv_sec = timeout / 1000;
tv.tv_usec = (timeout % 1000) * 1000;
QTime timer;
timer.start();
int ret;
do {
#ifndef Q_OS_SYMBIAN
ret = qt_socket_select(socketDescriptor + 1, &fdread, &fdwrite, 0, timeout < 0 ? 0 : &tv);
#else
ret = qt_socket_select(socketDescriptor + 1, &fdread, &fdwrite, &fdexec, timeout < 0 ? 0 : &tv);
bool selectForExec = false;
if(ret != 0) {
if(ret < 0) {
qWarning("nativeSelect(....) returned < 0 for socket %d", socketDescriptor);
}
selectForExec = FD_ISSET(socketDescriptor, &fdexec);
}
if(selectForExec) {
qWarning("nativeSelect (checkRead %d, checkWrite %d, ret %d, errno %d): Unexpected expectfds ready in fd %d",
checkRead, checkWrite, ret, errno, socketDescriptor);
if (checkRead)
FD_SET(socketDescriptor, &fdread);
if (checkWrite)
FD_SET(socketDescriptor, &fdwrite);
if ((ret == -1) && ( errno == ECONNREFUSED || errno == EPIPE ))
ret = 1;
}
#endif
if (ret != -1 || errno != EINTR) {
break;
}
if (timeout > 0) {
// recalculate the timeout
int t = timeout - timer.elapsed();
if (t < 0) {
// oops, timeout turned negative?
ret = -1;
break;
}
tv.tv_sec = t / 1000;
tv.tv_usec = (t % 1000) * 1000;
}
} while (true);
if (ret <= 0)
return ret;
*selectForRead = FD_ISSET(socketDescriptor, &fdread);
*selectForWrite = FD_ISSET(socketDescriptor, &fdwrite);
return ret;
}
QT_END_NAMESPACE
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