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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** 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.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "maemoremotemounter.h"
#include "maemoglobal.h"
#include "maemousedportsgatherer.h"
#include "qt4maemotarget.h"
#include <utils/ssh/sshconnection.h>
#include <utils/ssh/sshremoteprocess.h>
#include <qt4projectmanager/qt4buildconfiguration.h>
#include <utils/qtcassert.h>
#include <QtCore/QTimer>
#define ASSERT_STATE(state) ASSERT_STATE_GENERIC(State, state, m_state)
using namespace Utils;
namespace Qt4ProjectManager {
namespace Internal {
MaemoRemoteMounter::MaemoRemoteMounter(QObject *parent)
: QObject(parent), m_utfsServerTimer(new QTimer(this)), m_state(Inactive)
{
connect(m_utfsServerTimer, SIGNAL(timeout()), this,
SLOT(handleUtfsServerTimeout()));
m_utfsServerTimer->setSingleShot(true);
}
MaemoRemoteMounter::~MaemoRemoteMounter()
{
killAllUtfsServers();
}
void MaemoRemoteMounter::setConnection(const SshConnection::Ptr &connection)
{
ASSERT_STATE(Inactive);
m_connection = connection;
}
void MaemoRemoteMounter::setBuildConfiguration(const Qt4BuildConfiguration *bc)
{
ASSERT_STATE(Inactive);
const QtVersion * const qtVersion = bc->qtVersion();
m_remoteMountsAllowed
= qobject_cast<AbstractQt4MaemoTarget *>(bc->target())->allowsRemoteMounts();
m_maddeRoot = MaemoGlobal::maddeRoot(qtVersion);
}
void MaemoRemoteMounter::addMountSpecification(const MaemoMountSpecification &mountSpec,
bool mountAsRoot)
{
ASSERT_STATE(Inactive);
if (m_remoteMountsAllowed && mountSpec.isValid())
m_mountSpecs << MountInfo(mountSpec, mountAsRoot);
}
bool MaemoRemoteMounter::hasValidMountSpecifications() const
{
return !m_mountSpecs.isEmpty();
}
void MaemoRemoteMounter::mount(MaemoPortList *freePorts,
const MaemoUsedPortsGatherer *portsGatherer)
{
ASSERT_STATE(Inactive);
Q_ASSERT(m_utfsServers.isEmpty());
Q_ASSERT(m_connection);
if (m_mountSpecs.isEmpty()) {
setState(Inactive);
emit reportProgress(tr("No directories to mount"));
emit mounted();
} else {
m_freePorts = freePorts;
m_portsGatherer = portsGatherer;
startUtfsClients();
}
}
void MaemoRemoteMounter::unmount()
{
ASSERT_STATE(Inactive);
if (m_mountSpecs.isEmpty()) {
emit reportProgress(tr("No directories to unmount"));
emit unmounted();
return;
}
QString remoteCall;
for (int i = 0; i < m_mountSpecs.count(); ++i) {
remoteCall += QString::fromLocal8Bit("%1 umount %2 && %1 rmdir %2;")
.arg(MaemoGlobal::remoteSudo(),
m_mountSpecs.at(i).mountSpec.remoteMountPoint);
}
m_umountStderr.clear();
m_unmountProcess = m_connection->createRemoteProcess(remoteCall.toUtf8());
connect(m_unmountProcess.data(), SIGNAL(closed(int)), this,
SLOT(handleUnmountProcessFinished(int)));
connect(m_unmountProcess.data(), SIGNAL(errorOutputAvailable(QByteArray)),
this, SLOT(handleUmountStderr(QByteArray)));
setState(Unmounting);
m_unmountProcess->start();
}
void MaemoRemoteMounter::handleUnmountProcessFinished(int exitStatus)
{
ASSERT_STATE(QList<State>() << Unmounting << Inactive);
if (m_state == Inactive)
return;
setState(Inactive);
QString errorMsg;
switch (exitStatus) {
case SshRemoteProcess::FailedToStart:
errorMsg = tr("Could not execute unmount request.");
break;
case SshRemoteProcess::KilledBySignal:
errorMsg = tr("Failure unmounting: %1")
.arg(m_unmountProcess->errorString());
break;
case SshRemoteProcess::ExitedNormally:
break;
default:
Q_ASSERT_X(false, Q_FUNC_INFO,
"Impossible SshRemoteProcess exit status.");
}
killAllUtfsServers();
if (errorMsg.isEmpty()) {
emit reportProgress(tr("Finished unmounting."));
emit unmounted();
} else {
if (!m_umountStderr.isEmpty()) {
errorMsg += tr("\nstderr was: '%1'")
.arg(QString::fromUtf8(m_umountStderr));
}
emit error(errorMsg);
}
}
void MaemoRemoteMounter::stop()
{
setState(Inactive);
}
void MaemoRemoteMounter::startUtfsClients()
{
const QString chmodFuse
= MaemoGlobal::remoteSudo() + QLatin1String(" chmod a+r+w /dev/fuse");
const QString chmodUtfsClient
= QLatin1String("chmod a+x ") + utfsClientOnDevice();
const QLatin1String andOp(" && ");
QString remoteCall = chmodFuse + andOp + chmodUtfsClient;
for (int i = 0; i < m_mountSpecs.count(); ++i) {
MountInfo &mountInfo = m_mountSpecs[i];
mountInfo.remotePort
= m_portsGatherer->getNextFreePort(m_freePorts);
if (mountInfo.remotePort == -1) {
setState(Inactive);
emit error(tr("Error: Not enough free ports on device to fulfill all mount requests."));
return;
}
const MaemoMountSpecification &mountSpec = mountInfo.mountSpec;
const QString mkdir = QString::fromLocal8Bit("%1 mkdir -p %2")
.arg(MaemoGlobal::remoteSudo(), mountSpec.remoteMountPoint);
const QString chmod = QString::fromLocal8Bit("%1 chmod a+r+w+x %2")
.arg(MaemoGlobal::remoteSudo(), mountSpec.remoteMountPoint);
QString utfsClient
= QString::fromLocal8Bit("%1 -l %2 -r %2 -b %2 %4 -o nonempty")
.arg(utfsClientOnDevice()).arg(mountInfo.remotePort)
.arg(mountSpec.remoteMountPoint);
if (mountInfo.mountAsRoot)
utfsClient.prepend(MaemoGlobal::remoteSudo() + QLatin1Char(' '));
QLatin1String seqOp("; ");
remoteCall += seqOp + MaemoGlobal::remoteSourceProfilesCommand()
+ seqOp + mkdir + andOp + chmod + andOp + utfsClient;
}
emit reportProgress(tr("Starting remote UTFS clients..."));
m_utfsClientStderr.clear();
m_mountProcess = m_connection->createRemoteProcess(remoteCall.toUtf8());
connect(m_mountProcess.data(), SIGNAL(started()), this,
SLOT(handleUtfsClientsStarted()));
connect(m_mountProcess.data(), SIGNAL(closed(int)), this,
SLOT(handleUtfsClientsFinished(int)));
connect(m_mountProcess.data(), SIGNAL(errorOutputAvailable(QByteArray)),
this, SLOT(handleUtfsClientStderr(QByteArray)));
m_mountProcess->start();
setState(UtfsClientsStarting);
}
void MaemoRemoteMounter::handleUtfsClientsStarted()
{
ASSERT_STATE(QList<State>() << UtfsClientsStarting << Inactive);
if (m_state == UtfsClientsStarting) {
setState(UtfsClientsStarted);
QTimer::singleShot(250, this, SLOT(startUtfsServers()));
}
}
void MaemoRemoteMounter::handleUtfsClientsFinished(int exitStatus)
{
ASSERT_STATE(QList<State>() << UtfsClientsStarting << UtfsClientsStarted
<< UtfsServersStarted << Inactive);
if (m_state == Inactive)
return;
setState(Inactive);
if (exitStatus == SshRemoteProcess::ExitedNormally
&& m_mountProcess->exitCode() == 0) {
emit reportProgress(tr("Mount operation succeeded."));
emit mounted();
} else {
QString errMsg = tr("Failure running UTFS client: %1")
.arg(m_mountProcess->errorString());
if (!m_utfsClientStderr.isEmpty())
errMsg += tr("\nstderr was: '%1'")
.arg(QString::fromUtf8(m_utfsClientStderr));
emit error(errMsg);
}
}
void MaemoRemoteMounter::startUtfsServers()
{
ASSERT_STATE(QList<State>() << UtfsClientsStarted << Inactive);
if (m_state == Inactive)
return;
emit reportProgress(tr("Starting UTFS servers..."));
m_utfsServerTimer->start(30000);
for (int i = 0; i < m_mountSpecs.count(); ++i) {
const MountInfo &mountInfo = m_mountSpecs.at(i);
const MaemoMountSpecification &mountSpec = mountInfo.mountSpec;
const ProcPtr utfsServerProc(new QProcess);
const QString port = QString::number(mountInfo.remotePort);
const QString localSecretOpt = QLatin1String("-l");
const QString remoteSecretOpt = QLatin1String("-r");
const QStringList utfsServerArgs = QStringList() << localSecretOpt
<< port << remoteSecretOpt << port << QLatin1String("-c")
<< (m_connection->connectionParameters().host + QLatin1Char(':') + port)
<< mountSpec.localDir;
connect(utfsServerProc.data(),
SIGNAL(finished(int,QProcess::ExitStatus)), this,
SLOT(handleUtfsServerFinished(int,QProcess::ExitStatus)));
connect(utfsServerProc.data(), SIGNAL(error(QProcess::ProcessError)),
this, SLOT(handleUtfsServerError(QProcess::ProcessError)));
connect(utfsServerProc.data(), SIGNAL(readyReadStandardError()), this,
SLOT(handleUtfsServerStderr()));
m_utfsServers << utfsServerProc;
utfsServerProc->start(utfsServer(), utfsServerArgs);
}
setState(UtfsServersStarted);
}
void MaemoRemoteMounter::handleUtfsServerStderr()
{
if (m_state != Inactive) {
QProcess * const proc = static_cast<QProcess *>(sender());
const QByteArray &output = proc->readAllStandardError();
emit debugOutput(QString::fromLocal8Bit(output));
}
}
void MaemoRemoteMounter::handleUtfsServerError(QProcess::ProcessError)
{
if (m_state == Inactive || m_utfsServers.isEmpty())
return;
QProcess * const proc = static_cast<QProcess *>(sender());
QString errorString = proc->errorString();
const QByteArray &errorOutput = proc->readAllStandardError();
if (!errorOutput.isEmpty()) {
errorString += tr("\nstderr was: %1")
.arg(QString::fromLocal8Bit(errorOutput));
}
killAllUtfsServers();
emit error(tr("Error running UTFS server: %1").arg(errorString));
setState(Inactive);
}
void MaemoRemoteMounter::handleUtfsServerFinished(int /* exitCode */,
QProcess::ExitStatus exitStatus)
{
if (m_state != Inactive && exitStatus != QProcess::NormalExit)
handleUtfsServerError(static_cast<QProcess *>(sender())->error());
}
void MaemoRemoteMounter::handleUtfsClientStderr(const QByteArray &output)
{
if (m_state != Inactive)
m_utfsClientStderr += output;
}
void MaemoRemoteMounter::handleUmountStderr(const QByteArray &output)
{
if (m_state != Inactive)
m_umountStderr += output;
}
QString MaemoRemoteMounter::utfsClientOnDevice() const
{
return QLatin1String("/usr/lib/mad-developer/utfs-client");
}
QString MaemoRemoteMounter::utfsServer() const
{
return m_maddeRoot + QLatin1String("/madlib/utfs-server");
}
void MaemoRemoteMounter::killAllUtfsServers()
{
foreach (const ProcPtr &proc, m_utfsServers)
killUtfsServer(proc.data());
m_utfsServers.clear();
}
void MaemoRemoteMounter::killUtfsServer(QProcess *proc)
{
disconnect(proc, 0, this, 0);
proc->terminate();
proc->waitForFinished(1000);
proc->kill();
}
void MaemoRemoteMounter::handleUtfsServerTimeout()
{
ASSERT_STATE(QList<State>() << UtfsServersStarted << Inactive);
if (m_state == Inactive)
return;
killAllUtfsServers();
emit error(tr("Timeout waiting for UTFS servers to connect."));
setState(Inactive);
}
void MaemoRemoteMounter::setState(State newState)
{
if (newState == Inactive) {
m_utfsServerTimer->stop();
if (m_mountProcess) {
disconnect(m_mountProcess.data(), 0, this, 0);
m_mountProcess->closeChannel();
}
if (m_unmountProcess) {
disconnect(m_unmountProcess.data(), 0, this, 0);
m_unmountProcess->closeChannel();
}
}
m_state = newState;
}
} // namespace Internal
} // namespace Qt4ProjectManager
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