Long live Qt 4.5!

1 files changed, 251 insertions, 0 deletions

diff --git a/src/network/socket/qlocalserver_unix.cpp b/src/network/socket/qlocalserver_unix.cpp
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+++ b/src/network/socket/qlocalserver_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 "qlocalserver.h"
+#include "qlocalserver_p.h"
+#include "qlocalsocket.h"
+#include "qlocalsocket_p.h"
+
+#ifndef QT_NO_LOCALSERVER
+
+#include <sys/socket.h>
+#include <sys/un.h>
+
+#include <qdebug.h>
+#include <qdir.h>
+#include <qdatetime.h>
+
+QT_BEGIN_NAMESPACE
+
+void QLocalServerPrivate::init()
+{
+}
+
+bool QLocalServerPrivate::removeServer(const QString &name)
+{
+    QString fileName;
+    if (name.startsWith(QLatin1Char('/'))) {
+        fileName = name;
+    } else {
+        fileName = QDir::cleanPath(QDir::tempPath());
+        fileName += QLatin1Char('/') + name;
+    }
+    if (QFile::exists(fileName))
+        return QFile::remove(fileName);
+    else
+        return true;
+}
+
+bool QLocalServerPrivate::listen(const QString &requestedServerName)
+{
+    Q_Q(QLocalServer);
+
+    // determine the full server path
+    if (requestedServerName.startsWith(QLatin1Char('/'))) {
+        fullServerName = requestedServerName;
+    } else {
+        fullServerName = QDir::cleanPath(QDir::tempPath());
+        fullServerName += QLatin1Char('/') + requestedServerName;
+    }
+    serverName = requestedServerName;
+
+    // create the unix socket
+    listenSocket = qSocket(PF_UNIX, SOCK_STREAM, 0);
+    if (-1 == listenSocket) {
+        setError(QLatin1String("QLocalServer::listen"));
+        closeServer();
+        return false;
+    }
+
+    // Construct the unix address
+    struct ::sockaddr_un addr;
+    addr.sun_family = PF_UNIX;
+    if (sizeof(addr.sun_path) < (uint)fullServerName.toLatin1().size() + 1) {
+        setError(QLatin1String("QLocalServer::listen"));
+        closeServer();
+        return false;
+    }
+    ::memcpy(addr.sun_path, fullServerName.toLatin1().data(),
+             fullServerName.toLatin1().size() + 1);
+
+    // bind
+    if(-1 == qBind(listenSocket, (sockaddr *)&addr, sizeof(sockaddr_un))) {
+        setError(QLatin1String("QLocalServer::listen"));
+        // if address is in use already, just close the socket, but do not delete the file
+        if(errno == EADDRINUSE)
+            QT_CLOSE(listenSocket);
+        // otherwise, close the socket and delete the file
+        else
+            closeServer();
+        listenSocket = -1;
+        return false;
+    }
+
+    // listen for connections
+    if (-1 == qListen(listenSocket, 50)) {
+        setError(QLatin1String("QLocalServer::listen"));
+        closeServer();
+        listenSocket = -1;
+        if (error != QAbstractSocket::AddressInUseError)
+            QFile::remove(fullServerName);
+        return false;
+    }
+    Q_ASSERT(!socketNotifier);
+    socketNotifier = new QSocketNotifier(listenSocket,
+                                         QSocketNotifier::Read, q);
+    q->connect(socketNotifier, SIGNAL(activated(int)),
+               q, SLOT(_q_socketActivated()));
+    socketNotifier->setEnabled(maxPendingConnections > 0);
+    return true;
+}
+
+/*!
+    \internal
+
+    \sa QLocalServer::closeServer()
+ */
+void QLocalServerPrivate::closeServer()
+{
+    if (-1 != listenSocket)
+        QT_CLOSE(listenSocket);
+    listenSocket = -1;
+
+    if (socketNotifier)
+        socketNotifier->deleteLater();
+    socketNotifier = 0;
+
+    if (!fullServerName.isEmpty())
+        QFile::remove(fullServerName);
+}
+
+/*!
+    \internal
+
+    We have received a notification that we can read on the listen socket.
+    Accept the new socket.
+ */
+void QLocalServerPrivate::_q_socketActivated()
+{
+    Q_Q(QLocalServer);
+    if (-1 == listenSocket)
+        return;
+
+    ::sockaddr_un addr;
+    QT_SOCKLEN_T length = sizeof(sockaddr_un);
+    int connectedSocket = qAccept(listenSocket, (sockaddr *)&addr, &length);
+    if(-1 == connectedSocket) {
+        setError(QLatin1String("QLocalSocket::activated"));
+        closeServer();
+    } else {
+        socketNotifier->setEnabled(pendingConnections.size()
+                                   <= maxPendingConnections);
+        q->incomingConnection(connectedSocket);
+    }
+}
+
+void QLocalServerPrivate::waitForNewConnection(int msec, bool *timedOut)
+{
+    fd_set readfds;
+    FD_ZERO(&readfds);
+    FD_SET(listenSocket, &readfds);
+
+    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 (pendingConnections.isEmpty() && (-1 == msec || timer.elapsed() < msec)) {
+        result = ::select(listenSocket + 1, &readfds, 0, 0, &timeout);
+        if (-1 == result && errno != EINTR) {
+            setError(QLatin1String("QLocalServer::waitForNewConnection"));
+            closeServer();
+            break;
+        }
+        if (result > 0)
+            _q_socketActivated();
+    }
+    if (timedOut)
+        *timedOut = (result == 0);
+}
+
+void QLocalServerPrivate::setError(const QString &function)
+{
+    if (EAGAIN == errno)
+        return;
+
+    switch (errno) {
+    case EACCES:
+        errorString = QLocalServer::tr("%1: Permission denied").arg(function);
+        error = QAbstractSocket::SocketAccessError;
+        break;
+    case ELOOP:
+    case ENOENT:
+    case ENAMETOOLONG:
+    case EROFS:
+    case ENOTDIR:
+        errorString = QLocalServer::tr("%1: Name error").arg(function);
+        error = QAbstractSocket::HostNotFoundError;
+        break;
+    case EADDRINUSE:
+        errorString = QLocalServer::tr("%1: Address in use").arg(function);
+        error = QAbstractSocket::AddressInUseError;
+        break;
+
+    default:
+        errorString = QLocalServer::tr("%1: Unknown error %2")
+                      .arg(function).arg(errno);
+        error = QAbstractSocket::UnknownSocketError;
+#if defined QLOCALSERVER_DEBUG
+        qWarning() << errorString << "fullServerName:" << fullServerName;
+#endif
+    }
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_LOCALSERVER