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/****************************************************************************
**
** Copyright (C) 2011 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qlocalserver.h"
#include "qlocalserver_p.h"
#include "qlocalsocket.h"
#include "qlocalsocket_p.h"
#include "qnet_unix_p.h"
#ifndef QT_NO_LOCALSERVER
#include <sys/socket.h>
#include <sys/un.h>
#include <qdebug.h>
#include <qdir.h>
#include <qdatetime.h>
#ifdef Q_OS_VXWORKS
# include <selectLib.h>
#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);
// 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;
int result = -1;
result = qt_safe_select(listenSocket + 1, &readfds, 0, 0, (msec == -1) ? 0 : &timeout);
if (-1 == result) {
setError(QLatin1String("QLocalServer::waitForNewConnection"));
closeServer();
}
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
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