diff -r 000000000000 -r 1918ee327afb src/network/socket/qlocalserver_unix.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/network/socket/qlocalserver_unix.cpp Mon Jan 11 14:00:40 2010 +0000 @@ -0,0 +1,276 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying +** this package. +** +** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qlocalserver.h" +#include "qlocalserver_p.h" +#include "qlocalsocket.h" +#include "qlocalsocket_p.h" +#include "qnet_unix_p.h" + +#ifndef QT_NO_LOCALSERVER + +#include +#include + +#include +#include +#include + +#ifdef Q_OS_VXWORKS +# include +#endif + +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 = qt_safe_socket(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); + +#ifdef Q_OS_SYMBIAN + // In SYMBIAN OS it can currently happen that accept is called twice, + // once from waitForNewConnection and once via QSocketNotfier activity + // + // As an workaround, we set the socket to non blocking so possible + // subsequent call to accept will not block in any case + // + // This change can be removed once more generic fix to select thread + // syncronization problem is implemented. + int flags = fcntl(listenSocket, F_GETFL, 0); + if (-1 == flags + || -1 == (fcntl(listenSocket, F_SETFL, flags | O_NONBLOCK))) { + setError(QLatin1String("QLocalServer::listen")); + closeServer(); + return false; + } +#endif + + // bind + if(-1 == QT_SOCKET_BIND(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 == qt_safe_listen(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_onNewConnection())); + socketNotifier->setEnabled(maxPendingConnections > 0); + return true; +} + +/*! + \internal + + \sa QLocalServer::closeServer() + */ +void QLocalServerPrivate::closeServer() +{ + if (-1 != listenSocket) + QT_CLOSE(listenSocket); + listenSocket = -1; + + if (socketNotifier) { + socketNotifier->setEnabled(false); // Otherwise, closed socket is checked before deleter runs + 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_onNewConnection() +{ + Q_Q(QLocalServer); + if (-1 == listenSocket) + return; + + ::sockaddr_un addr; + QT_SOCKLEN_T length = sizeof(sockaddr_un); + int connectedSocket = qt_safe_accept(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_onNewConnection(); + } + 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