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/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** 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, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/
#include "remotegdbprocess.h"
#include "remoteplaingdbadapter.h"
#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>
#include <QtCore/QFileInfo>
#include <ctype.h>
using namespace Core;
namespace Debugger {
namespace Internal {
RemoteGdbProcess::RemoteGdbProcess(const Utils::SshConnectionParameters &connParams,
RemotePlainGdbAdapter *adapter, QObject *parent)
: AbstractGdbProcess(parent), m_connParams(connParams),
m_state(Inactive), m_adapter(adapter)
{
}
QByteArray RemoteGdbProcess::readAllStandardOutput()
{
QByteArray output = m_gdbOutput;
m_gdbOutput.clear();
return output;
}
QByteArray RemoteGdbProcess::readAllStandardError()
{
QByteArray errorOutput = m_errorOutput;
m_errorOutput.clear();
return errorOutput;
}
void RemoteGdbProcess::start(const QString &cmd, const QStringList &args)
{
Q_UNUSED(cmd);
Q_UNUSED(args);
QTC_ASSERT(m_state == RunningGdb, return);
}
void RemoteGdbProcess::realStart(const QString &cmd, const QStringList &args,
const QString &executableFilePath)
{
QTC_ASSERT(m_state == Inactive, return);
setState(Connecting);
m_command = cmd;
m_cmdArgs = args;
m_appOutputFileName = "app_output_"
+ QFileInfo(executableFilePath).fileName().toUtf8();
m_error.clear();
m_lastSeqNr.clear();
m_currentGdbOutput.clear();
m_gdbOutput.clear();
m_errorOutput.clear();
m_inputToSend.clear();
m_conn = Utils::SshConnection::create();
connect(m_conn.data(), SIGNAL(connected()), this, SLOT(handleConnected()));
connect(m_conn.data(), SIGNAL(error(Utils::SshError)), this,
SLOT(handleConnectionError()));
m_conn->connectToHost(m_connParams);
}
void RemoteGdbProcess::handleConnected()
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == Connecting, return);
setState(CreatingFifo);
m_fifoCreator = m_conn->createRemoteProcess( "rm -f "
+ m_appOutputFileName + " && mkfifo " + m_appOutputFileName);
connect(m_fifoCreator.data(), SIGNAL(closed(int)), this,
SLOT(handleFifoCreationFinished(int)));
m_fifoCreator->start();
}
void RemoteGdbProcess::handleConnectionError()
{
if (m_state != Inactive)
emitErrorExit(tr("Connection failure: %1.").arg(m_conn->errorString()));
}
void RemoteGdbProcess::handleFifoCreationFinished(int exitStatus)
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == CreatingFifo, return);
if (exitStatus != Utils::SshRemoteProcess::ExitedNormally) {
emitErrorExit(tr("Could not create FIFO."));
} else {
setState(StartingFifoReader);
m_appOutputReader = m_conn->createRemoteProcess("cat "
+ m_appOutputFileName + " && rm -f " + m_appOutputFileName);
connect(m_appOutputReader.data(), SIGNAL(started()), this,
SLOT(handleAppOutputReaderStarted()));
connect(m_appOutputReader.data(), SIGNAL(closed(int)), this,
SLOT(handleAppOutputReaderFinished(int)));
m_appOutputReader->start();
}
}
void RemoteGdbProcess::handleAppOutputReaderStarted()
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == StartingFifoReader, return);
setState(StartingGdb);
connect(m_appOutputReader.data(), SIGNAL(outputAvailable(QByteArray)),
this, SLOT(handleAppOutput(QByteArray)));
QByteArray cmdLine = "DISPLAY=:0.0 " + m_command.toUtf8() + ' '
+ Utils::QtcProcess::joinArgsUnix(m_cmdArgs).toUtf8()
+ " -tty=" + m_appOutputFileName;
if (!m_wd.isEmpty())
cmdLine.prepend("cd " + Utils::QtcProcess::quoteArgUnix(m_wd).toUtf8() + " && ");
m_gdbProc = m_conn->createRemoteProcess(cmdLine);
connect(m_gdbProc.data(), SIGNAL(started()), this,
SLOT(handleGdbStarted()));
connect(m_gdbProc.data(), SIGNAL(closed(int)), this,
SLOT(handleGdbFinished(int)));
connect(m_gdbProc.data(), SIGNAL(outputAvailable(QByteArray)), this,
SLOT(handleGdbOutput(QByteArray)));
connect(m_gdbProc.data(), SIGNAL(errorOutputAvailable(QByteArray)), this,
SLOT(handleErrOutput(QByteArray)));
m_gdbProc->start();
}
void RemoteGdbProcess::handleAppOutputReaderFinished(int exitStatus)
{
if (exitStatus != Utils::SshRemoteProcess::ExitedNormally)
emitErrorExit(tr("Application output reader unexpectedly finished."));
}
void RemoteGdbProcess::handleGdbStarted()
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == StartingGdb, return);
setState(RunningGdb);
emit started();
}
void RemoteGdbProcess::handleGdbFinished(int exitStatus)
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == RunningGdb, return);
switch (exitStatus) {
case Utils::SshRemoteProcess::FailedToStart:
m_error = tr("Remote GDB failed to start.");
setState(Inactive);
emit startFailed();
break;
case Utils::SshRemoteProcess::KilledBySignal:
emitErrorExit(tr("Remote GDB crashed."));
break;
case Utils::SshRemoteProcess::ExitedNormally:
const int exitCode = m_gdbProc->exitCode();
setState(Inactive);
emit finished(exitCode, QProcess::NormalExit);
break;
}
}
bool RemoteGdbProcess::waitForStarted()
{
if (m_state == Inactive)
return false;
QTC_ASSERT(m_state == RunningGdb, return false);
return true;
}
qint64 RemoteGdbProcess::write(const QByteArray &data)
{
if (m_state != RunningGdb || !m_inputToSend.isEmpty()
|| !m_lastSeqNr.isEmpty())
m_inputToSend.enqueue(data);
else
sendInput(data);
return data.size();
}
void RemoteGdbProcess::kill()
{
if (m_state == RunningGdb) {
Utils::SshRemoteProcess::Ptr killProc
= m_conn->createRemoteProcess("pkill -SIGKILL -x gdb");
killProc->start();
} else {
setState(Inactive);
}
}
void RemoteGdbProcess::interruptInferior()
{
QTC_ASSERT(m_state == RunningGdb, return);
Utils::SshRemoteProcess::Ptr intProc
= m_conn->createRemoteProcess("pkill -x -SIGINT gdb");
intProc->start();
}
QProcess::ProcessState RemoteGdbProcess::state() const
{
switch (m_state) {
case RunningGdb: return QProcess::Running;
case Inactive: return QProcess::NotRunning;
default: return QProcess::Starting;
}
}
QString RemoteGdbProcess::errorString() const
{
return m_error;
}
void RemoteGdbProcess::handleGdbOutput(const QByteArray &output)
{
if (m_state == Inactive)
return;
QTC_ASSERT(m_state == RunningGdb, return);
// TODO: Carriage return removal still necessary?
m_currentGdbOutput += removeCarriageReturn(output);
#if 0
qDebug("%s: complete unread output is '%s'", Q_FUNC_INFO, m_currentGdbOutput.data());
#endif
if (!m_currentGdbOutput.endsWith('\n'))
return;
if (m_currentGdbOutput.contains(m_lastSeqNr + '^'))
m_lastSeqNr.clear();
if (m_lastSeqNr.isEmpty() && !m_inputToSend.isEmpty()) {
#if 0
qDebug("Sending queued command: %s", m_inputToSend.head().data());
#endif
sendInput(m_inputToSend.dequeue());
}
if (!m_currentGdbOutput.isEmpty()) {
const int startPos
= m_gdbOutput.isEmpty() ? findAnchor(m_currentGdbOutput) : 0;
if (startPos != -1) {
m_gdbOutput += m_currentGdbOutput.mid(startPos);
m_currentGdbOutput.clear();
emit readyReadStandardOutput();
}
}
}
QProcessEnvironment RemoteGdbProcess::processEnvironment() const
{
return QProcessEnvironment(); // TODO: Provide actual environment.
}
void RemoteGdbProcess::setProcessEnvironment(const QProcessEnvironment & /* env */)
{
// TODO: Do something. (if remote process exists: set, otherwise queue)
}
void RemoteGdbProcess::setEnvironment(const QStringList & /* env */)
{
// TODO: Do something.
}
void RemoteGdbProcess::setWorkingDirectory(const QString &dir)
{
m_wd = dir;
}
int RemoteGdbProcess::findAnchor(const QByteArray &data) const
{
for (int pos = 0; pos < data.count(); ++pos) {
const char c = data.at(pos);
if (isdigit(c) || c == '*' || c == '+' || c == '=' || c == '~'
|| c == '@' || c == '&' || c == '^')
return pos;
}
return -1;
}
void RemoteGdbProcess::sendInput(const QByteArray &data)
{
QTC_ASSERT(m_state == RunningGdb, return);
int pos;
for (pos = 0; pos < data.size(); ++pos)
if (!isdigit(data.at(pos)))
break;
m_lastSeqNr = data.left(pos);
m_gdbProc->sendInput(data);
}
void RemoteGdbProcess::handleAppOutput(const QByteArray &output)
{
if (m_state == RunningGdb)
m_adapter->handleApplicationOutput(output);
}
void RemoteGdbProcess::handleErrOutput(const QByteArray &output)
{
if (m_state == RunningGdb) {
m_errorOutput += output;
emit readyReadStandardError();
}
}
QByteArray RemoteGdbProcess::removeCarriageReturn(const QByteArray &data)
{
QByteArray output;
for (int i = 0; i < data.size(); ++i) {
const char c = data.at(i);
if (c != '\r')
output += c;
}
return output;
}
void RemoteGdbProcess::emitErrorExit(const QString &error)
{
if (m_error.isEmpty()) {
m_error = error;
setState(Inactive);
emit finished(-1, QProcess::CrashExit);
}
}
void RemoteGdbProcess::setState(State newState)
{
if (m_state == newState)
return;
m_state = newState;
if (m_state == Inactive) {
if (m_gdbProc) {
disconnect(m_gdbProc.data(), 0, this, 0);
m_gdbProc = Utils::SshRemoteProcess::Ptr();
}
if (m_appOutputReader) {
disconnect(m_appOutputReader.data(), 0, this, 0);
m_appOutputReader = Utils::SshRemoteProcess::Ptr();
}
if (m_fifoCreator) {
disconnect(m_fifoCreator.data(), 0, this, 0);
m_fifoCreator = Utils::SshRemoteProcess::Ptr();
}
disconnect(m_conn.data(), 0, this, 0);
m_conn->disconnectFromHost();
}
}
const QByteArray RemoteGdbProcess::CtrlC = QByteArray(1, 0x3);
} // namespace Internal
} // namespace Debugger
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