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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "terminal.h"
#include "debuggertr.h"
#include <coreplugin/icore.h>
#include <projectexplorer/runconfiguration.h>
#include <projectexplorer/runconfigurationaspects.h>
#include <utils/environment.h>
#include <utils/hostosinfo.h>
#include <utils/qtcprocess.h>
#include <utils/processinterface.h>
#include <utils/qtcassert.h>
#include <QDebug>
#include <QIODevice>
#include <QSocketNotifier>
#ifdef Q_OS_UNIX
# define DEBUGGER_USE_TERMINAL
#endif
#ifdef DEBUGGER_USE_TERMINAL
# include <errno.h>
# include <fcntl.h>
# include <stdlib.h>
# include <string.h>
# include <unistd.h>
# include <sys/ioctl.h>
# include <sys/stat.h>
#endif
using namespace Core;
using namespace ProjectExplorer;
using namespace Utils;
namespace Debugger::Internal {
Terminal::Terminal(QObject *parent)
: QObject(parent)
{
}
void Terminal::setup()
{
#ifdef DEBUGGER_USE_TERMINAL
const auto currentError = [] {
int err = errno;
return QString::fromLatin1(strerror(err));
};
if (!qtcEnvironmentVariableIsSet("QTC_USE_PTY"))
return;
m_masterFd = ::open("/dev/ptmx", O_RDWR);
if (m_masterFd < 0) {
error(Tr::tr("Terminal: Cannot open /dev/ptmx: %1").arg(currentError()));
return;
}
const char *sName = ptsname(m_masterFd);
if (!sName) {
error(Tr::tr("Terminal: ptsname failed: %1").arg(currentError()));
return;
}
m_slaveName = sName;
struct stat s;
int r = ::stat(m_slaveName.constData(), &s);
if (r != 0) {
error(Tr::tr("Terminal: Error: %1").arg(currentError()));
return;
}
if (!S_ISCHR(s.st_mode)) {
error(Tr::tr("Terminal: Slave is no character device."));
return;
}
m_masterReader = new QSocketNotifier(m_masterFd, QSocketNotifier::Read, this);
connect(m_masterReader, &QSocketNotifier::activated,
this, &Terminal::onSlaveReaderActivated);
r = grantpt(m_masterFd);
if (r != 0) {
error(Tr::tr("Terminal: grantpt failed: %1").arg(currentError()));
return;
}
r = unlockpt(m_masterFd);
if (r != 0) {
error(Tr::tr("Terminal: unlock failed: %1").arg(currentError()));
return;
}
m_isUsable = true;
#endif
}
bool Terminal::isUsable() const
{
return m_isUsable;
}
int Terminal::write(const QByteArray &msg)
{
#ifdef DEBUGGER_USE_TERMINAL
return ::write(m_masterFd, msg.constData(), msg.size());
#else
Q_UNUSED(msg)
return -1;
#endif
}
bool Terminal::sendInterrupt()
{
#ifdef DEBUGGER_USE_TERMINAL
if (!m_isUsable)
return false;
ssize_t written = ::write(m_masterFd, "\003", 1);
return written == 1;
#else
return false;
#endif
}
void Terminal::onSlaveReaderActivated(int fd)
{
#ifdef DEBUGGER_USE_TERMINAL
ssize_t available = 0;
int ret = ::ioctl(fd, FIONREAD, (char *) &available);
if (ret != 0)
return;
QByteArray buffer(available, Qt::Uninitialized);
ssize_t got = ::read(fd, buffer.data(), available);
int err = errno;
if (got < 0) {
error(Tr::tr("Terminal: Read failed: %1").arg(QString::fromLatin1(strerror(err))));
return;
}
buffer.resize(got);
if (got >= 0)
stdOutReady(QString::fromUtf8(buffer));
#else
Q_UNUSED(fd)
#endif
}
} // Debugger::Internal
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