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authoraxis <qt-info@nokia.com>2009-04-24 11:34:15 (GMT)
committeraxis <qt-info@nokia.com>2009-04-24 11:34:15 (GMT)
commit8f427b2b914d5b575a4a7c0ed65d2fb8f45acc76 (patch)
treea17e1a767a89542ab59907462206d7dcf2e504b2 /src/network/socket/qlocalsocket_unix.cpp
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Long live Qt for S60!
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diff --git a/src/network/socket/qlocalsocket_unix.cpp b/src/network/socket/qlocalsocket_unix.cpp
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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.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qlocalsocket.h"
+#include "qlocalsocket_p.h"
+
+#ifndef QT_NO_LOCALSOCKET
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <qdatetime.h>
+#include <qdir.h>
+#include <qdebug.h>
+
+#define QT_CONNECT_TIMEOUT 30000
+
+QT_BEGIN_NAMESPACE
+
+QLocalSocketPrivate::QLocalSocketPrivate() : QIODevicePrivate(),
+ delayConnect(0),
+ connectTimer(0),
+ connectingSocket(-1),
+ connectingOpenMode(0),
+ state(QLocalSocket::UnconnectedState)
+{
+}
+
+void QLocalSocketPrivate::init()
+{
+ Q_Q(QLocalSocket);
+ // QIODevice signals
+ q->connect(&unixSocket, SIGNAL(aboutToClose()), q, SIGNAL(aboutToClose()));
+ q->connect(&unixSocket, SIGNAL(bytesWritten(qint64)),
+ q, SIGNAL(bytesWritten(qint64)));
+ q->connect(&unixSocket, SIGNAL(readyRead()), q, SIGNAL(readyRead()));
+ // QAbstractSocket signals
+ q->connect(&unixSocket, SIGNAL(connected()), q, SIGNAL(connected()));
+ q->connect(&unixSocket, SIGNAL(disconnected()), q, SIGNAL(disconnected()));
+ q->connect(&unixSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)),
+ q, SLOT(_q_stateChanged(QAbstractSocket::SocketState)));
+ q->connect(&unixSocket, SIGNAL(error(QAbstractSocket::SocketError)),
+ q, SLOT(_q_error(QAbstractSocket::SocketError)));
+ q->connect(&unixSocket, SIGNAL(readChannelFinished()), q, SIGNAL(readChannelFinished()));
+ unixSocket.setParent(q);
+}
+
+void QLocalSocketPrivate::_q_error(QAbstractSocket::SocketError socketError)
+{
+ Q_Q(QLocalSocket);
+ QString function = QLatin1String("QLocalSocket");
+ QLocalSocket::LocalSocketError error = (QLocalSocket::LocalSocketError)socketError;
+ QString errorString = generateErrorString(error, function);
+ q->setErrorString(errorString);
+ emit q->error(error);
+}
+
+void QLocalSocketPrivate::_q_stateChanged(QAbstractSocket::SocketState newState)
+{
+ Q_Q(QLocalSocket);
+ QLocalSocket::LocalSocketState currentState = state;
+ switch(newState) {
+ case QAbstractSocket::UnconnectedState:
+ state = QLocalSocket::UnconnectedState;
+ serverName = QString();
+ fullServerName = QString();
+ break;
+ case QAbstractSocket::ConnectingState:
+ state = QLocalSocket::ConnectingState;
+ break;
+ case QAbstractSocket::ConnectedState:
+ state = QLocalSocket::ConnectedState;
+ break;
+ case QAbstractSocket::ClosingState:
+ state = QLocalSocket::ClosingState;
+ break;
+ default:
+#if defined QLOCALSOCKET_DEBUG
+ qWarning() << "QLocalSocket::Unhandled socket state change:" << newState;
+#endif
+ return;
+ }
+ if (currentState != state)
+ emit q->stateChanged(state);
+}
+
+QString QLocalSocketPrivate::generateErrorString(QLocalSocket::LocalSocketError error, const QString &function) const
+{
+ QString errorString;
+ switch (error) {
+ case QLocalSocket::ConnectionRefusedError:
+ errorString = QLocalSocket::tr("%1: Connection refused").arg(function);
+ break;
+ case QLocalSocket::PeerClosedError:
+ errorString = QLocalSocket::tr("%1: Remote closed").arg(function);
+ break;
+ case QLocalSocket::ServerNotFoundError:
+ errorString = QLocalSocket::tr("%1: Invalid name").arg(function);
+ break;
+ case QLocalSocket::SocketAccessError:
+ errorString = QLocalSocket::tr("%1: Socket access error").arg(function);
+ break;
+ case QLocalSocket::SocketResourceError:
+ errorString = QLocalSocket::tr("%1: Socket resource error").arg(function);
+ break;
+ case QLocalSocket::SocketTimeoutError:
+ errorString = QLocalSocket::tr("%1: Socket operation timed out").arg(function);
+ break;
+ case QLocalSocket::DatagramTooLargeError:
+ errorString = QLocalSocket::tr("%1: Datagram too large").arg(function);
+ break;
+ case QLocalSocket::ConnectionError:
+ errorString = QLocalSocket::tr("%1: Connection error").arg(function);
+ break;
+ case QLocalSocket::UnsupportedSocketOperationError:
+ errorString = QLocalSocket::tr("%1: The socket operation is not supported").arg(function);
+ break;
+ case QLocalSocket::UnknownSocketError:
+ default:
+ errorString = QLocalSocket::tr("%1: Unknown error %2").arg(function).arg(errno);
+ }
+ return errorString;
+}
+
+void QLocalSocketPrivate::errorOccurred(QLocalSocket::LocalSocketError error, const QString &function)
+{
+ Q_Q(QLocalSocket);
+ switch (error) {
+ case QLocalSocket::ConnectionRefusedError:
+ unixSocket.setSocketError(QAbstractSocket::ConnectionRefusedError);
+ break;
+ case QLocalSocket::PeerClosedError:
+ unixSocket.setSocketError(QAbstractSocket::RemoteHostClosedError);
+ break;
+ case QLocalSocket::ServerNotFoundError:
+ unixSocket.setSocketError(QAbstractSocket::HostNotFoundError);
+ break;
+ case QLocalSocket::SocketAccessError:
+ unixSocket.setSocketError(QAbstractSocket::SocketAccessError);
+ break;
+ case QLocalSocket::SocketResourceError:
+ unixSocket.setSocketError(QAbstractSocket::SocketResourceError);
+ break;
+ case QLocalSocket::SocketTimeoutError:
+ unixSocket.setSocketError(QAbstractSocket::SocketTimeoutError);
+ break;
+ case QLocalSocket::DatagramTooLargeError:
+ unixSocket.setSocketError(QAbstractSocket::DatagramTooLargeError);
+ break;
+ case QLocalSocket::ConnectionError:
+ unixSocket.setSocketError(QAbstractSocket::NetworkError);
+ break;
+ case QLocalSocket::UnsupportedSocketOperationError:
+ unixSocket.setSocketError(QAbstractSocket::UnsupportedSocketOperationError);
+ break;
+ case QLocalSocket::UnknownSocketError:
+ default:
+ unixSocket.setSocketError(QAbstractSocket::UnknownSocketError);
+ }
+
+ QString errorString = generateErrorString(error, function);
+ q->setErrorString(errorString);
+ emit q->error(error);
+
+ // errors cause a disconnect
+ unixSocket.setSocketState(QAbstractSocket::UnconnectedState);
+ bool stateChanged = (state != QLocalSocket::UnconnectedState);
+ state = QLocalSocket::UnconnectedState;
+ q->close();
+ if (stateChanged)
+ q->emit stateChanged(state);
+}
+
+void QLocalSocket::connectToServer(const QString &name, OpenMode openMode)
+{
+ Q_D(QLocalSocket);
+ if (state() == ConnectedState
+ || state() == ConnectingState)
+ return;
+
+ d->errorString = QString();
+ d->unixSocket.setSocketState(QAbstractSocket::ConnectingState);
+ d->state = ConnectingState;
+ emit stateChanged(d->state);
+
+ if (name.isEmpty()) {
+ d->errorOccurred(ServerNotFoundError,
+ QLatin1String("QLocalSocket::connectToServer"));
+ return;
+ }
+
+ // create the socket
+ if (-1 == (d->connectingSocket = qSocket(PF_UNIX, SOCK_STREAM, 0))) {
+ d->errorOccurred(UnsupportedSocketOperationError,
+ QLatin1String("QLocalSocket::connectToServer"));
+ return;
+ }
+
+ // set non blocking so we can try to connect and it wont wait
+ int flags = fcntl(d->connectingSocket, F_GETFL, 0);
+ if (-1 == flags
+ || -1 == (fcntl(d->connectingSocket, F_SETFL, flags | O_NONBLOCK))) {
+ d->errorOccurred(UnknownSocketError,
+ QLatin1String("QLocalSocket::connectToServer"));
+ return;
+ }
+
+ // _q_connectToSocket does the actual connecting
+ d->connectingName = name;
+ d->connectingOpenMode = openMode;
+ d->_q_connectToSocket();
+}
+
+/*!
+ \internal
+
+ Tries to connect connectingName and connectingOpenMode
+
+ \sa connectToServer() waitForConnected()
+ */
+void QLocalSocketPrivate::_q_connectToSocket()
+{
+ Q_Q(QLocalSocket);
+ QString connectingPathName;
+
+ // determine the full server path
+ if (connectingName.startsWith(QLatin1Char('/'))) {
+ connectingPathName = connectingName;
+ } else {
+ connectingPathName = QDir::tempPath();
+ connectingPathName += QLatin1Char('/') + connectingName;
+ }
+
+ struct sockaddr_un name;
+ name.sun_family = PF_UNIX;
+ if (sizeof(name.sun_path) < (uint)connectingPathName.toLatin1().size() + 1) {
+ QString function = QLatin1String("QLocalSocket::connectToServer");
+ errorOccurred(QLocalSocket::ServerNotFoundError, function);
+ return;
+ }
+ ::memcpy(name.sun_path, connectingPathName.toLatin1().data(),
+ connectingPathName.toLatin1().size() + 1);
+ if (-1 == qConnect(connectingSocket, (struct sockaddr *)&name, sizeof(name)) && errno != EISCONN) {
+ QString function = QLatin1String("QLocalSocket::connectToServer");
+ switch (errno)
+ {
+ case EINVAL:
+ case ECONNREFUSED:
+ errorOccurred(QLocalSocket::ConnectionRefusedError, function);
+ break;
+ case ENOENT:
+ errorOccurred(QLocalSocket::ServerNotFoundError, function);
+ break;
+ case EACCES:
+ case EPERM:
+ errorOccurred(QLocalSocket::SocketAccessError, function);
+ break;
+ case ETIMEDOUT:
+ errorOccurred(QLocalSocket::SocketTimeoutError, function);
+ break;
+ case EINPROGRESS:
+ case EAGAIN:
+ // Try again later, all of the sockets listening are full
+ if (!delayConnect) {
+ delayConnect = new QSocketNotifier(connectingSocket, QSocketNotifier::Write);
+ q->connect(delayConnect, SIGNAL(activated(int)), q, SLOT(_q_connectToSocket()));
+ }
+ if (!connectTimer) {
+ connectTimer = new QTimer(q);
+ q->connect(connectTimer, SIGNAL(timeout()),
+ q, SLOT(_q_abortConnectionAttempt()),
+ Qt::DirectConnection);
+ connectTimer->start(QT_CONNECT_TIMEOUT);
+ }
+ delayConnect->setEnabled(true);
+ break;
+ default:
+ errorOccurred(QLocalSocket::UnknownSocketError, function);
+ }
+ return;
+ }
+
+ // connected!
+ if (delayConnect) {
+ delayConnect->setEnabled(false);
+ delete delayConnect;
+ delayConnect = 0;
+ }
+ serverName = connectingName;
+ fullServerName = connectingPathName;
+ if (unixSocket.setSocketDescriptor(connectingSocket,
+ QAbstractSocket::ConnectedState, connectingOpenMode)) {
+ q->QIODevice::open(connectingOpenMode);
+ q->emit connected();
+ } else {
+ QString function = QLatin1String("QLocalSocket::connectToServer");
+ errorOccurred(QLocalSocket::UnknownSocketError, function);
+ }
+ connectingSocket = -1;
+ connectingName = QString();
+ connectingOpenMode = 0;
+}
+
+bool QLocalSocket::setSocketDescriptor(quintptr socketDescriptor,
+ LocalSocketState socketState, OpenMode openMode)
+{
+ Q_D(QLocalSocket);
+ QAbstractSocket::SocketState newSocketState = QAbstractSocket::UnconnectedState;
+ switch (socketState) {
+ case ConnectingState:
+ newSocketState = QAbstractSocket::ConnectingState;
+ break;
+ case ConnectedState:
+ newSocketState = QAbstractSocket::ConnectedState;
+ break;
+ case ClosingState:
+ newSocketState = QAbstractSocket::ClosingState;
+ break;
+ case UnconnectedState:
+ newSocketState = QAbstractSocket::UnconnectedState;
+ break;
+ }
+ QIODevice::open(openMode);
+ d->state = socketState;
+ return d->unixSocket.setSocketDescriptor(socketDescriptor,
+ newSocketState, openMode);
+}
+
+void QLocalSocketPrivate::_q_abortConnectionAttempt()
+{
+ Q_Q(QLocalSocket);
+ q->close();
+}
+
+quintptr QLocalSocket::socketDescriptor() const
+{
+ Q_D(const QLocalSocket);
+ return d->unixSocket.socketDescriptor();
+}
+
+qint64 QLocalSocket::readData(char *data, qint64 c)
+{
+ Q_D(QLocalSocket);
+ return d->unixSocket.readData(data, c);
+}
+
+qint64 QLocalSocket::writeData(const char *data, qint64 c)
+{
+ Q_D(QLocalSocket);
+ return d->unixSocket.writeData(data, c);
+}
+
+void QLocalSocket::abort()
+{
+ Q_D(QLocalSocket);
+ d->unixSocket.abort();
+}
+
+qint64 QLocalSocket::bytesAvailable() const
+{
+ Q_D(const QLocalSocket);
+ return QIODevice::bytesAvailable() + d->unixSocket.bytesAvailable();
+}
+
+qint64 QLocalSocket::bytesToWrite() const
+{
+ Q_D(const QLocalSocket);
+ return d->unixSocket.bytesToWrite();
+}
+
+bool QLocalSocket::canReadLine() const
+{
+ Q_D(const QLocalSocket);
+ return QIODevice::canReadLine() || d->unixSocket.canReadLine();
+}
+
+void QLocalSocket::close()
+{
+ Q_D(QLocalSocket);
+ d->unixSocket.close();
+ if (d->delayConnect) {
+ d->delayConnect->setEnabled(false);
+ delete d->delayConnect;
+ d->delayConnect = 0;
+ d->connectTimer->stop();
+ delete d->connectTimer;
+ d->connectTimer = 0;
+ }
+ if (d->connectingSocket != -1)
+ ::close(d->connectingSocket);
+ d->connectingSocket = -1;
+ d->connectingName = QString();
+ d->connectingOpenMode = 0;
+ d->serverName = QString();
+ d->fullServerName = QString();
+ QIODevice::close();
+}
+
+bool QLocalSocket::waitForBytesWritten(int msecs)
+{
+ Q_D(QLocalSocket);
+ return d->unixSocket.waitForBytesWritten(msecs);
+}
+
+bool QLocalSocket::flush()
+{
+ Q_D(QLocalSocket);
+ return d->unixSocket.flush();
+}
+
+void QLocalSocket::disconnectFromServer()
+{
+ Q_D(QLocalSocket);
+ d->unixSocket.disconnectFromHost();
+}
+
+QLocalSocket::LocalSocketError QLocalSocket::error() const
+{
+ Q_D(const QLocalSocket);
+ switch (d->unixSocket.error()) {
+ case QAbstractSocket::ConnectionRefusedError:
+ return QLocalSocket::ConnectionRefusedError;
+ case QAbstractSocket::RemoteHostClosedError:
+ return QLocalSocket::PeerClosedError;
+ case QAbstractSocket::HostNotFoundError:
+ return QLocalSocket::ServerNotFoundError;
+ case QAbstractSocket::SocketAccessError:
+ return QLocalSocket::SocketAccessError;
+ case QAbstractSocket::SocketResourceError:
+ return QLocalSocket::SocketResourceError;
+ case QAbstractSocket::SocketTimeoutError:
+ return QLocalSocket::SocketTimeoutError;
+ case QAbstractSocket::DatagramTooLargeError:
+ return QLocalSocket::DatagramTooLargeError;
+ case QAbstractSocket::NetworkError:
+ return QLocalSocket::ConnectionError;
+ case QAbstractSocket::UnsupportedSocketOperationError:
+ return QLocalSocket::UnsupportedSocketOperationError;
+ case QAbstractSocket::UnknownSocketError:
+ return QLocalSocket::UnknownSocketError;
+ default:
+#if defined QLOCALSOCKET_DEBUG
+ qWarning() << "QLocalSocket error not handled:" << d->unixSocket.error();
+#endif
+ break;
+ }
+ return UnknownSocketError;
+}
+
+bool QLocalSocket::isValid() const
+{
+ Q_D(const QLocalSocket);
+ return d->unixSocket.isValid();
+}
+
+qint64 QLocalSocket::readBufferSize() const
+{
+ Q_D(const QLocalSocket);
+ return d->unixSocket.readBufferSize();
+}
+
+void QLocalSocket::setReadBufferSize(qint64 size)
+{
+ Q_D(QLocalSocket);
+ d->unixSocket.setReadBufferSize(size);
+}
+
+bool QLocalSocket::waitForConnected(int msec)
+{
+ Q_D(QLocalSocket);
+ if (state() != ConnectingState)
+ return (state() == ConnectedState);
+
+ fd_set fds;
+ FD_ZERO(&fds);
+ FD_SET(d->connectingSocket, &fds);
+
+ timeval timeout;
+ timeout.tv_sec = msec / 1000;
+ timeout.tv_usec = (msec % 1000) * 1000;
+
+ // timeout can not be 0 or else select will return an error.
+ if (0 == msec)
+ timeout.tv_usec = 1000;
+
+ int result = -1;
+ // on Linux timeout will be updated by select, but _not_ on other systems.
+ QTime timer;
+ timer.start();
+ while (state() == ConnectingState
+ && (-1 == msec || timer.elapsed() < msec)) {
+#ifdef Q_OS_SYMBIAN
+ // On Symbian, ready-to-write is signaled when non-blocking socket
+ // connect is finised. Is ready-to-read really used on other
+ // UNIX paltforms when using non-blocking AF_UNIX socket?
+ result = ::select(d->connectingSocket + 1, 0, &fds, 0, &timeout);
+#else
+ result = ::select(d->connectingSocket + 1, &fds, 0, 0, &timeout);
+#endif
+ if (-1 == result && errno != EINTR) {
+ d->errorOccurred( QLocalSocket::UnknownSocketError,
+ QLatin1String("QLocalSocket::waitForConnected"));
+ break;
+ }
+ if (result > 0)
+ d->_q_connectToSocket();
+ }
+
+ return (state() == ConnectedState);
+}
+
+bool QLocalSocket::waitForDisconnected(int msecs)
+{
+ Q_D(QLocalSocket);
+ if (state() == UnconnectedState) {
+ qWarning() << "QLocalSocket::waitForDisconnected() is not allowed in UnconnectedState";
+ return false;
+ }
+ return (d->unixSocket.waitForDisconnected(msecs));
+}
+
+bool QLocalSocket::waitForReadyRead(int msecs)
+{
+ Q_D(QLocalSocket);
+ if (state() == QLocalSocket::UnconnectedState)
+ return false;
+ return (d->unixSocket.waitForReadyRead(msecs));
+}
+
+QT_END_NAMESPACE
+
+#endif