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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "outputcollector.h"
#ifdef Q_OS_WIN
#include <QLocalServer>
#include <QLocalSocket>
#include <QCoreApplication>
#include <stdlib.h>
#else
#include <utils/temporaryfile.h>
#include <QSocketNotifier>
#include <QVarLengthArray>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifdef Q_OS_SOLARIS
# include <sys/filio.h> // FIONREAD
#endif
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <unistd.h>
#endif
namespace Debugger {
namespace Internal {
OutputCollector::OutputCollector(QObject *parent)
: QObject(parent)
{
#ifdef Q_OS_WIN
m_server = 0;
m_socket = 0;
#endif
}
OutputCollector::~OutputCollector()
{
shutdown();
}
bool OutputCollector::listen()
{
#ifdef Q_OS_WIN
if (m_server)
return m_server->isListening();
m_server = new QLocalServer(this);
connect(m_server, &QLocalServer::newConnection, this, &OutputCollector::newConnectionAvailable);
return m_server->listen(QString::fromLatin1("creator-%1-%2")
.arg(QCoreApplication::applicationPid())
.arg(rand()));
#else
if (!m_serverPath.isEmpty())
return true;
QByteArray codedServerPath;
forever {
{
Utils::TemporaryFile tf("outputcollector");
if (!tf.open()) {
m_errorString = tr("Cannot create temporary file: %1").arg(tf.errorString());
m_serverPath.clear();
return false;
}
m_serverPath = tf.fileName();
}
// By now the temp file was deleted again
codedServerPath = QFile::encodeName(m_serverPath);
if (!::mkfifo(codedServerPath.constData(), 0600))
break;
if (errno != EEXIST) {
m_errorString = tr("Cannot create FiFo %1: %2").
arg(m_serverPath, QString::fromLocal8Bit(strerror(errno)));
m_serverPath.clear();
return false;
}
}
if ((m_serverFd = ::open(codedServerPath.constData(), O_RDONLY|O_NONBLOCK)) < 0) {
m_errorString = tr("Cannot open FiFo %1: %2").
arg(m_serverPath, QString::fromLocal8Bit(strerror(errno)));
m_serverPath.clear();
return false;
}
m_serverNotifier = new QSocketNotifier(m_serverFd, QSocketNotifier::Read, this);
connect(m_serverNotifier, &QSocketNotifier::activated, this, &OutputCollector::bytesAvailable);
return true;
#endif
}
void OutputCollector::shutdown()
{
#ifdef Q_OS_WIN
delete m_server; // Deletes socket as well (QObject parent)
m_server = 0;
m_socket = 0;
#else
if (!m_serverPath.isEmpty()) {
::close(m_serverFd);
::unlink(QFile::encodeName(m_serverPath).constData());
delete m_serverNotifier;
m_serverPath.clear();
}
#endif
}
QString OutputCollector::errorString() const
{
#ifdef Q_OS_WIN
return m_socket ? m_socket->errorString() : m_server->errorString();
#else
return m_errorString;
#endif
}
QString OutputCollector::serverName() const
{
#ifdef Q_OS_WIN
return m_server->fullServerName();
#else
return m_serverPath;
#endif
}
#ifdef Q_OS_WIN
void OutputCollector::newConnectionAvailable()
{
if (m_socket)
return;
m_socket = m_server->nextPendingConnection();
connect(m_socket, &QIODevice::readyRead, this, &OutputCollector::bytesAvailable);
}
#endif
void OutputCollector::bytesAvailable()
{
#ifdef Q_OS_WIN
emit byteDelivery(m_socket->readAll());
#else
size_t nbytes = 0;
if (::ioctl(m_serverFd, FIONREAD, (char *) &nbytes) < 0)
return;
QVarLengthArray<char, 8192> buff(nbytes);
if (::read(m_serverFd, buff.data(), nbytes) != (int)nbytes)
return;
if (nbytes) // Skip EOF notifications
emit byteDelivery(QByteArray::fromRawData(buff.data(), nbytes));
#endif
}
} // namespace Internal
} // namespace Debugger
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