installer-framework/src/libs/installer/qprocesswrapper.cpp

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/**************************************************************************
**
** Copyright (C) 2012-2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Installer Framework.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
**************************************************************************/
#include "qprocesswrapper.h"
#include "protocol.h"
#include "utils.h"
#include <QDir>
namespace QInstaller {
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QProcessWrapper::QProcessWrapper(QObject *parent)
: RemoteObject(QLatin1String(Protocol::QProcess), parent)
{
qRegisterMetaType<QProcess::ExitStatus>();
qRegisterMetaType<QProcess::ProcessError>();
qRegisterMetaType<QProcess::ProcessState>();
m_timer.start(250);
connect(&m_timer, SIGNAL(timeout()), this, SLOT(processSignals()));
connect(&process, SIGNAL(bytesWritten(qint64)), SIGNAL(bytesWritten(qint64)));
connect(&process, SIGNAL(aboutToClose()), SIGNAL(aboutToClose()));
connect(&process, SIGNAL(readChannelFinished()), SIGNAL(readChannelFinished()));
connect(&process, SIGNAL(error(QProcess::ProcessError)), SIGNAL(error(QProcess::ProcessError)));
connect(&process, SIGNAL(readyReadStandardOutput()), SIGNAL(readyReadStandardOutput()));
connect(&process, SIGNAL(readyReadStandardError()), SIGNAL(readyReadStandardError()));
connect(&process, SIGNAL(finished(int)), SIGNAL(finished(int)));
connect(&process, SIGNAL(finished(int,QProcess::ExitStatus)),
SIGNAL(finished(int,QProcess::ExitStatus)));
connect(&process, SIGNAL(readyRead()), SIGNAL(readyRead()));
connect(&process, SIGNAL(started()), SIGNAL(started()));
connect(&process, SIGNAL(stateChanged(QProcess::ProcessState)),
SIGNAL(stateChanged(QProcess::ProcessState)));
}
QProcessWrapper::~QProcessWrapper()
{
m_timer.stop();
}
void QProcessWrapper::processSignals()
{
if (!isConnectedToServer())
return;
if (!m_lock.tryLockForRead())
return;
QList<QVariant> receivedSignals =
callRemoteMethod<QList<QVariant> >(QString::fromLatin1(Protocol::GetQProcessSignals));
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while (!receivedSignals.isEmpty()) {
const QString name = receivedSignals.takeFirst().toString();
if (name == QLatin1String(Protocol::QProcessSignalBytesWritten)) {
emit bytesWritten(receivedSignals.takeFirst().value<qint64>());
} else if (name == QLatin1String(Protocol::QProcessSignalAboutToClose)) {
emit aboutToClose();
} else if (name == QLatin1String(Protocol::QProcessSignalReadChannelFinished)) {
emit readChannelFinished();
} else if (name == QLatin1String(Protocol::QProcessSignalError)) {
emit error(static_cast<QProcess::ProcessError> (receivedSignals.takeFirst().toInt()));
} else if (name == QLatin1String(Protocol::QProcessSignalReadyReadStandardOutput)) {
emit readyReadStandardOutput();
} else if (name == QLatin1String(Protocol::QProcessSignalReadyReadStandardError)) {
emit readyReadStandardError();
} else if (name == QLatin1String(Protocol::QProcessSignalStarted)) {
emit started();
} else if (name == QLatin1String(Protocol::QProcessSignalReadyRead)) {
emit readyRead();
} else if (name == QLatin1String(Protocol::QProcessSignalStateChanged)) {
emit stateChanged(static_cast<QProcess::ProcessState> (receivedSignals.takeFirst()
.toInt()));
} else if (name == QLatin1String(Protocol::QProcessSignalFinished)) {
emit finished(receivedSignals.first().toInt());
emit finished(receivedSignals.takeFirst().toInt(),
static_cast<QProcess::ExitStatus> (receivedSignals.takeFirst().toInt()));
}
}
m_lock.unlock();
}
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bool QProcessWrapper::startDetached(const QString &program, const QStringList &arguments,
const QString &workingDirectory, qint64 *pid)
{
QProcessWrapper w;
if (w.connectToServer()) {
const QPair<bool, qint64> result =
w.callRemoteMethod<QPair<bool, qint64> >(QLatin1String(Protocol::QProcessStartDetached),
program, arguments, workingDirectory);
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if (pid != 0)
*pid = result.second;
w.processSignals();
return result.first;
}
return QInstaller::startDetached(program, arguments, workingDirectory, pid);
}
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bool QProcessWrapper::startDetached(const QString &program, const QStringList &arguments)
{
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return startDetached(program, arguments, QDir::currentPath());
}
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bool QProcessWrapper::startDetached(const QString &program)
{
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return startDetached(program, QStringList());
}
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void QProcessWrapper::setProcessChannelMode(QProcessWrapper::ProcessChannelMode mode)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessSetProcessChannelMode),
static_cast<QProcess::ProcessChannelMode>(mode), dummy);
m_lock.unlock();
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} else {
process.setProcessChannelMode(static_cast<QProcess::ProcessChannelMode>(mode));
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}
}
/*!
Cancels the process. This methods tries to terminate the process
gracefully by calling QProcess::terminate. After 10 seconds, the process gets killed.
*/
void QProcessWrapper::cancel()
{
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if (state() == QProcessWrapper::Running)
terminate();
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if (!waitForFinished(10000))
kill();
}
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void QProcessWrapper::setReadChannel(QProcessWrapper::ProcessChannel chan)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessSetReadChannel),
static_cast<QProcess::ProcessChannel>(chan), dummy);
m_lock.unlock();
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} else {
process.setReadChannel(static_cast<QProcess::ProcessChannel>(chan));
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}
}
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bool QProcessWrapper::waitForFinished(int msecs)
{
if (connectToServer()) {
m_lock.lockForWrite();
const bool value = callRemoteMethod<bool>(QLatin1String(Protocol::QProcessWaitForFinished),
msecs);
m_lock.unlock();
return value;
}
return process.waitForFinished(msecs);
}
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bool QProcessWrapper::waitForStarted(int msecs)
{
if (connectToServer()) {
m_lock.lockForWrite();
const bool value = callRemoteMethod<bool>(QLatin1String(Protocol::QProcessWaitForStarted),
msecs);
m_lock.unlock();
return value;
}
return process.waitForStarted(msecs);
}
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qint64 QProcessWrapper::write(const QByteArray &data)
{
if (connectToServer()) {
m_lock.lockForWrite();
const qint64 value = callRemoteMethod<qint64>(QLatin1String(Protocol::QProcessWrite), data);
m_lock.unlock();
return value;
}
return process.write(data);
}
void QProcessWrapper::closeWriteChannel()
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessCloseWriteChannel));
m_lock.unlock();
} else {
process.closeWriteChannel();
}
}
int QProcessWrapper::exitCode() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const int value = callRemoteMethod<qint32>(QLatin1String(Protocol::QProcessExitCode));
m_lock.unlock();
return value;
}
return static_cast<int>(process.exitCode());
}
QProcessWrapper::ExitStatus QProcessWrapper::exitStatus() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const int status = callRemoteMethod<qint32>(QLatin1String(Protocol::QProcessExitStatus));
m_lock.unlock();
return static_cast<QProcessWrapper::ExitStatus>(status);
}
return static_cast<QProcessWrapper::ExitStatus>(process.exitStatus());
}
void QProcessWrapper::kill()
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessKill));
m_lock.unlock();
} else {
process.kill();
}
}
QByteArray QProcessWrapper::readAll()
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{
if (connectToServer()) {
m_lock.lockForWrite();
const QByteArray ba = callRemoteMethod<QByteArray>(QLatin1String(Protocol::QProcessReadAll));
m_lock.unlock();
return ba;
}
return process.readAll();
}
QByteArray QProcessWrapper::readAllStandardOutput()
{
if (connectToServer()) {
m_lock.lockForWrite();
const QByteArray ba =
callRemoteMethod<QByteArray>(QLatin1String(Protocol::QProcessReadAllStandardOutput));
m_lock.unlock();
return ba;
}
return process.readAllStandardOutput();
}
QByteArray QProcessWrapper::readAllStandardError()
{
if (connectToServer()) {
m_lock.lockForWrite();
const QByteArray ba =
callRemoteMethod<QByteArray>(QLatin1String(Protocol::QProcessReadAllStandardError));
m_lock.unlock();
return ba;
}
return process.readAllStandardError();
}
void QProcessWrapper::start(const QString &param1, const QStringList &param2,
QIODevice::OpenMode param3)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessStart3Arg), param1, param2, param3);
m_lock.unlock();
} else {
process.start(param1, param2, param3);
}
}
void QProcessWrapper::start(const QString &param1, QIODevice::OpenMode param2)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessStart2Arg), param1, param2);
m_lock.unlock();
} else {
process.start(param1, param2);
}
}
QProcessWrapper::ProcessState QProcessWrapper::state() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const int state = callRemoteMethod<qint32>(QLatin1String(Protocol::QProcessState));
m_lock.unlock();
return static_cast<QProcessWrapper::ProcessState>(state);
}
return static_cast<QProcessWrapper::ProcessState>(process.state());
}
void QProcessWrapper::terminate()
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessTerminate));
m_lock.unlock();
} else {
process.terminate();
}
}
QProcessWrapper::ProcessChannel QProcessWrapper::readChannel() const
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{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const int channel = callRemoteMethod<qint32>(QLatin1String(Protocol::QProcessReadChannel));
m_lock.unlock();
return static_cast<QProcessWrapper::ProcessChannel>(channel);
}
return static_cast<QProcessWrapper::ProcessChannel>(process.readChannel());
}
QProcessWrapper::ProcessChannelMode QProcessWrapper::processChannelMode() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const int mode = callRemoteMethod<qint32>(QLatin1String(Protocol::QProcessProcessChannelMode));
m_lock.unlock();
return static_cast<QProcessWrapper::ProcessChannelMode>(mode);
}
return static_cast<QProcessWrapper::ProcessChannelMode>(process.processChannelMode());
}
QString QProcessWrapper::workingDirectory() const
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{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const QString dir = callRemoteMethod<QString>(QLatin1String(Protocol::QProcessWorkingDirectory));
m_lock.unlock();
return dir;
}
return static_cast<QString>(process.workingDirectory());
}
QString QProcessWrapper::errorString() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const QString error = callRemoteMethod<QString>(QLatin1String(Protocol::QProcessErrorString));
m_lock.unlock();
return error;
}
return static_cast<QString>(process.errorString());
}
QStringList QProcessWrapper::environment() const
{
if ((const_cast<QProcessWrapper *>(this))->connectToServer()) {
m_lock.lockForWrite();
const QStringList env =
callRemoteMethod<QStringList>(QLatin1String(Protocol::QProcessEnvironment));
m_lock.unlock();
return env;
}
return process.environment();
}
void QProcessWrapper::setEnvironment(const QStringList &param1)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessSetEnvironment), param1, dummy);
m_lock.unlock();
} else {
process.setEnvironment(param1);
}
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}
#ifdef Q_OS_WIN
void QProcessWrapper::setNativeArguments(const QString &param1)
{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessSetNativeArguments), param1, dummy);
m_lock.unlock();
} else {
process.setNativeArguments(param1);
}
}
#endif
void QProcessWrapper::setWorkingDirectory(const QString &param1)
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{
if (connectToServer()) {
m_lock.lockForWrite();
callRemoteMethod(QLatin1String(Protocol::QProcessSetWorkingDirectory), param1, dummy);
m_lock.unlock();
} else {
process.setWorkingDirectory(param1);
}
}
} // namespace QInstaller