| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** 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 |
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| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
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| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qlocalsocket.h" |
| #include "qlocalsocket_p.h" |
| #include "qlocalserver.h" |
| |
| #include <qhostaddress.h> |
| #include <qsettings.h> |
| #include <qdebug.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| QLocalSocketPrivate::QLocalSocketPrivate() : QIODevicePrivate(), |
| tcpSocket(0), |
| ownsTcpSocket(true), |
| state(QLocalSocket::UnconnectedState) |
| { |
| } |
| |
| void QLocalSocketPrivate::init() |
| { |
| setSocket(new QLocalUnixSocket); |
| } |
| |
| void QLocalSocketPrivate::setSocket(QLocalUnixSocket* socket) |
| { |
| if (ownsTcpSocket) |
| delete tcpSocket; |
| ownsTcpSocket = false; |
| tcpSocket = socket; |
| |
| Q_Q(QLocalSocket); |
| // QIODevice signals |
| q->connect(tcpSocket, SIGNAL(aboutToClose()), q, SIGNAL(aboutToClose())); |
| q->connect(tcpSocket, SIGNAL(bytesWritten(qint64)), |
| q, SIGNAL(bytesWritten(qint64))); |
| q->connect(tcpSocket, SIGNAL(readyRead()), q, SIGNAL(readyRead())); |
| // QAbstractSocket signals |
| q->connect(tcpSocket, SIGNAL(connected()), q, SIGNAL(connected())); |
| q->connect(tcpSocket, SIGNAL(disconnected()), q, SIGNAL(disconnected())); |
| q->connect(tcpSocket, SIGNAL(stateChanged(QAbstractSocket::SocketState)), |
| q, SLOT(_q_stateChanged(QAbstractSocket::SocketState))); |
| q->connect(tcpSocket, SIGNAL(error(QAbstractSocket::SocketError)), |
| q, SLOT(_q_error(QAbstractSocket::SocketError))); |
| q->connect(tcpSocket, SIGNAL(readChannelFinished()), q, SIGNAL(readChannelFinished())); |
| tcpSocket->setParent(q); |
| } |
| |
| qint64 QLocalSocketPrivate::skip(qint64 maxSize) |
| { |
| return tcpSocket->skip(maxSize); |
| } |
| |
| 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.clear(); |
| fullServerName.clear(); |
| 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::OperationError: |
| errorString = QLocalSocket::tr("%1: Operation not permitted when socket is in this state").arg(function); |
| break; |
| case QLocalSocket::UnknownSocketError: |
| default: |
| errorString = QLocalSocket::tr("%1: Unknown error").arg(function); |
| } |
| return errorString; |
| } |
| |
| void QLocalSocketPrivate::errorOccurred(QLocalSocket::LocalSocketError error, const QString &function) |
| { |
| Q_Q(QLocalSocket); |
| switch (error) { |
| case QLocalSocket::ConnectionRefusedError: |
| tcpSocket->setSocketError(QAbstractSocket::ConnectionRefusedError); |
| break; |
| case QLocalSocket::PeerClosedError: |
| tcpSocket->setSocketError(QAbstractSocket::RemoteHostClosedError); |
| break; |
| case QLocalSocket::ServerNotFoundError: |
| tcpSocket->setSocketError(QAbstractSocket::HostNotFoundError); |
| break; |
| case QLocalSocket::SocketAccessError: |
| tcpSocket->setSocketError(QAbstractSocket::SocketAccessError); |
| break; |
| case QLocalSocket::SocketResourceError: |
| tcpSocket->setSocketError(QAbstractSocket::SocketResourceError); |
| break; |
| case QLocalSocket::SocketTimeoutError: |
| tcpSocket->setSocketError(QAbstractSocket::SocketTimeoutError); |
| break; |
| case QLocalSocket::DatagramTooLargeError: |
| tcpSocket->setSocketError(QAbstractSocket::DatagramTooLargeError); |
| break; |
| case QLocalSocket::ConnectionError: |
| tcpSocket->setSocketError(QAbstractSocket::NetworkError); |
| break; |
| case QLocalSocket::UnsupportedSocketOperationError: |
| tcpSocket->setSocketError(QAbstractSocket::UnsupportedSocketOperationError); |
| break; |
| case QLocalSocket::UnknownSocketError: |
| default: |
| tcpSocket->setSocketError(QAbstractSocket::UnknownSocketError); |
| } |
| |
| QString errorString = generateErrorString(error, function); |
| q->setErrorString(errorString); |
| emit q->error(error); |
| |
| // errors cause a disconnect |
| tcpSocket->setSocketState(QAbstractSocket::UnconnectedState); |
| bool stateChanged = (state != QLocalSocket::UnconnectedState); |
| state = QLocalSocket::UnconnectedState; |
| q->close(); |
| if (stateChanged) |
| q->emit stateChanged(state); |
| } |
| |
| void QLocalSocket::connectToServer(OpenMode openMode) |
| { |
| Q_D(QLocalSocket); |
| if (state() == ConnectedState || state() == ConnectingState) { |
| setErrorString(tr("Trying to connect while connection is in progress")); |
| emit error(QLocalSocket::OperationError); |
| return; |
| } |
| |
| d->errorString.clear(); |
| d->state = ConnectingState; |
| emit stateChanged(d->state); |
| |
| if (d->serverName.isEmpty()) { |
| d->errorOccurred(ServerNotFoundError, |
| QLatin1String("QLocalSocket::connectToServer")); |
| return; |
| } |
| |
| const QLatin1String prefix("QLocalServer/"); |
| if (d->serverName.startsWith(prefix)) |
| d->fullServerName = d->serverName; |
| else |
| d->fullServerName = prefix + d->serverName; |
| |
| QSettings settings(QLatin1String("QtProject"), QLatin1String("Qt")); |
| bool ok; |
| const quint16 port = settings.value(d->fullServerName).toUInt(&ok); |
| if (!ok) { |
| d->errorOccurred(ServerNotFoundError, |
| QLatin1String("QLocalSocket::connectToServer")); |
| return; |
| } |
| QIODevice::open(openMode); |
| d->tcpSocket->connectToHost(QHostAddress::LocalHost, port, openMode); |
| } |
| |
| bool QLocalSocket::setSocketDescriptor(qintptr 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; |
| |
| // Is our parent a localServer? Then it wants us to use its remote socket. |
| QLocalServer* localServer = qobject_cast<QLocalServer*>( parent() ); |
| if (localServer) { |
| for (QObject* child : localServer->children()) { |
| QTcpSocket* childTcpSocket = qobject_cast<QTcpSocket*>(child); |
| if (childTcpSocket && childTcpSocket->socketDescriptor() == socketDescriptor) { |
| d->setSocket( static_cast<QLocalUnixSocket*>(childTcpSocket) ); |
| return true; |
| } |
| } |
| } |
| |
| // We couldn't find the socket in the children list of our server. |
| // So it might be that the user wants to set a socket descriptor. |
| return d->tcpSocket->setSocketDescriptor(socketDescriptor, |
| newSocketState, openMode); |
| } |
| |
| qintptr QLocalSocket::socketDescriptor() const |
| { |
| Q_D(const QLocalSocket); |
| return d->tcpSocket->socketDescriptor(); |
| } |
| |
| qint64 QLocalSocket::readData(char *data, qint64 c) |
| { |
| Q_D(QLocalSocket); |
| return d->tcpSocket->read(data, c); |
| } |
| |
| qint64 QLocalSocket::writeData(const char *data, qint64 c) |
| { |
| Q_D(QLocalSocket); |
| return d->tcpSocket->writeData(data, c); |
| } |
| |
| void QLocalSocket::abort() |
| { |
| Q_D(QLocalSocket); |
| d->tcpSocket->abort(); |
| } |
| |
| qint64 QLocalSocket::bytesAvailable() const |
| { |
| Q_D(const QLocalSocket); |
| return QIODevice::bytesAvailable() + d->tcpSocket->bytesAvailable(); |
| } |
| |
| qint64 QLocalSocket::bytesToWrite() const |
| { |
| Q_D(const QLocalSocket); |
| return d->tcpSocket->bytesToWrite(); |
| } |
| |
| bool QLocalSocket::canReadLine() const |
| { |
| Q_D(const QLocalSocket); |
| return QIODevice::canReadLine() || d->tcpSocket->canReadLine(); |
| } |
| |
| void QLocalSocket::close() |
| { |
| Q_D(QLocalSocket); |
| d->tcpSocket->close(); |
| d->serverName.clear(); |
| d->fullServerName.clear(); |
| QIODevice::close(); |
| } |
| |
| bool QLocalSocket::waitForBytesWritten(int msecs) |
| { |
| Q_D(QLocalSocket); |
| return d->tcpSocket->waitForBytesWritten(msecs); |
| } |
| |
| bool QLocalSocket::flush() |
| { |
| Q_D(QLocalSocket); |
| return d->tcpSocket->flush(); |
| } |
| |
| void QLocalSocket::disconnectFromServer() |
| { |
| Q_D(QLocalSocket); |
| d->tcpSocket->disconnectFromHost(); |
| } |
| |
| QLocalSocket::LocalSocketError QLocalSocket::error() const |
| { |
| Q_D(const QLocalSocket); |
| switch (d->tcpSocket->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->tcpSocket->error(); |
| #endif |
| break; |
| } |
| return UnknownSocketError; |
| } |
| |
| bool QLocalSocket::isValid() const |
| { |
| Q_D(const QLocalSocket); |
| return d->tcpSocket->isValid(); |
| } |
| |
| qint64 QLocalSocket::readBufferSize() const |
| { |
| Q_D(const QLocalSocket); |
| return d->tcpSocket->readBufferSize(); |
| } |
| |
| void QLocalSocket::setReadBufferSize(qint64 size) |
| { |
| Q_D(QLocalSocket); |
| d->tcpSocket->setReadBufferSize(size); |
| } |
| |
| bool QLocalSocket::waitForConnected(int msec) |
| { |
| Q_D(QLocalSocket); |
| if (state() != ConnectingState) |
| return (state() == ConnectedState); |
| |
| return d->tcpSocket->waitForConnected(msec); |
| } |
| |
| bool QLocalSocket::waitForDisconnected(int msecs) |
| { |
| Q_D(QLocalSocket); |
| if (state() == UnconnectedState) { |
| qWarning("QLocalSocket::waitForDisconnected() is not allowed in UnconnectedState"); |
| return false; |
| } |
| return (d->tcpSocket->waitForDisconnected(msecs)); |
| } |
| |
| bool QLocalSocket::waitForReadyRead(int msecs) |
| { |
| Q_D(QLocalSocket); |
| if (state() == QLocalSocket::UnconnectedState) |
| return false; |
| return (d->tcpSocket->waitForReadyRead(msecs)); |
| } |
| |
| QT_END_NAMESPACE |