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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Qt Software Information (qt-info@nokia.com)
**
** Commercial Usage
**
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at qt-sales@nokia.com.
**
**************************************************************************/
#include "consoleprocess.h"
#include <QtCore/QCoreApplication>
#include <QtCore/QTemporaryFile>
#include <QtNetwork/QLocalSocket>
#include <sys/stat.h>
#include <sys/types.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
using namespace Core::Utils;
ConsoleProcess::ConsoleProcess(QObject *parent)
: QObject(parent)
{
m_debug = false;
m_appPid = 0;
m_stubSocket = 0;
connect(&m_stubServer, SIGNAL(newConnection()), SLOT(stubConnectionAvailable()));
m_process.setProcessChannelMode(QProcess::ForwardedChannels);
connect(&m_process, SIGNAL(finished(int, QProcess::ExitStatus)),
SLOT(stubExited()));
}
ConsoleProcess::~ConsoleProcess()
{
stop();
}
bool ConsoleProcess::start(const QString &program, const QStringList &args)
{
if (isRunning())
return false;
QString err = stubServerListen();
if (!err.isEmpty()) {
emit processError(tr("Cannot set up comm channel: %1").arg(err));
return false;
}
QStringList xtermArgs;
xtermArgs << "-e"
#ifdef Q_OS_MAC
<< (QCoreApplication::applicationDirPath() + "/../Resources/qtcreator_process_stub")
#else
<< (QCoreApplication::applicationDirPath() + "/qtcreator_process_stub")
#endif
<< (m_debug ? "debug" : "exec")
<< m_stubServer.fullServerName()
<< tr("Press <RETURN> to close this window...")
<< workingDirectory() << environment() << ""
<< program << args;
m_process.start(QLatin1String("xterm"), xtermArgs);
if (!m_process.waitForStarted()) {
stubServerShutdown();
emit processError(tr("Cannot start console emulator xterm."));
return false;
}
m_executable = program;
emit wrapperStarted();
return true;
}
void ConsoleProcess::stop()
{
if (!isRunning())
return;
stubServerShutdown();
m_appPid = 0;
m_process.terminate();
if (!m_process.waitForFinished(1000))
m_process.kill();
m_process.waitForFinished();
}
bool ConsoleProcess::isRunning() const
{
return m_process.state() != QProcess::NotRunning;
}
QString ConsoleProcess::stubServerListen()
{
// We need to put the socket in a private directory, as some systems simply do not
// check the file permissions of sockets.
QString stubFifoDir;
forever {
{
QTemporaryFile tf;
if (!tf.open())
return tr("Cannot create temporary file: %2").arg(tf.errorString());
stubFifoDir = QFile::encodeName(tf.fileName());
}
// By now the temp file was deleted again
m_stubServerDir = QFile::encodeName(stubFifoDir);
if (!::mkdir(m_stubServerDir.constData(), 0700))
break;
if (errno != EEXIST)
return tr("Cannot create temporary directory %1: %2").arg(stubFifoDir, strerror(errno));
}
QString stubServer = stubFifoDir + "/stub-socket";
if (!m_stubServer.listen(stubServer)) {
::rmdir(m_stubServerDir.constData());
return tr("Cannot create socket %1: %2").arg(stubServer, m_stubServer.errorString());
}
return QString();
}
void ConsoleProcess::stubServerShutdown()
{
delete m_stubSocket;
m_stubSocket = 0;
if (m_stubServer.isListening()) {
m_stubServer.close();
::rmdir(m_stubServerDir.constData());
}
}
void ConsoleProcess::stubConnectionAvailable()
{
m_stubSocket = m_stubServer.nextPendingConnection();
connect(m_stubSocket, SIGNAL(readyRead()), SLOT(readStubOutput()));
}
static QString errorMsg(int code)
{
return QString::fromLocal8Bit(strerror(code));
}
void ConsoleProcess::readStubOutput()
{
while (m_stubSocket->canReadLine()) {
QByteArray out = m_stubSocket->readLine();
out.chop(1); // \n
if (out.startsWith("err:chdir ")) {
emit processError(tr("Cannot change to working directory %1: %2")
.arg(workingDirectory(), errorMsg(out.mid(10).toInt())));
} else if (out.startsWith("err:exec ")) {
emit processError(tr("Cannot execute %1: %2")
.arg(m_executable, errorMsg(out.mid(9).toInt())));
} else if (out.startsWith("pid ")) {
m_appPid = out.mid(4).toInt();
emit processStarted();
} else if (out.startsWith("exit ")) {
m_appStatus = QProcess::NormalExit;
m_appCode = out.mid(5).toInt();
m_appPid = 0;
emit processStopped();
} else if (out.startsWith("crash ")) {
m_appStatus = QProcess::CrashExit;
m_appCode = out.mid(6).toInt();
m_appPid = 0;
emit processStopped();
} else {
emit processError(tr("Unexpected output from helper program."));
m_process.terminate();
break;
}
}
}
void ConsoleProcess::stubExited()
{
// The stub exit might get noticed before we read the error status.
if (m_stubSocket && m_stubSocket->state() == QLocalSocket::ConnectedState)
m_stubSocket->waitForDisconnected();
stubServerShutdown();
if (m_appPid) {
m_appStatus = QProcess::CrashExit;
m_appCode = -1;
m_appPid = 0;
emit processStopped(); // Maybe it actually did not, but keep state consistent
}
emit wrapperStopped();
}
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