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/*
* LinuxPlatformPlugin.cpp - implementation of LinuxPlatformPlugin class
*
* Copyright (c) 2017-2025 Tobias Junghans <tobydox@veyon.io>
*
* This file is part of Veyon - https://veyon.io
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program (see COPYING); if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
*/
#include <csignal>
#include <execinfo.h>
#include "LinuxPlatformPlugin.h"
#include "LinuxPlatformConfiguration.h"
#include "LinuxPlatformConfigurationPage.h"
LinuxPlatformPlugin::LinuxPlatformPlugin( QObject* parent ) :
QObject( parent )
{
// make sure to load global config from default config dirs independent of environment variables
qunsetenv( "XDG_CONFIG_DIRS" );
// don't abort with SIGPIPE when writing to closed sockets e.g. while shutting down VncConnection
::signal(SIGPIPE, SIG_IGN);
::signal(SIGKILL, abort);
::signal(SIGBUS, abort);
::signal(SIGSEGV, abort);
}
LinuxPlatformPlugin::~LinuxPlatformPlugin()
{
m_linuxInputDeviceFunctions.enableInputDevices();
}
ConfigurationPage* LinuxPlatformPlugin::createConfigurationPage()
{
return new LinuxPlatformConfigurationPage();
}
void LinuxPlatformPlugin::abort(int signal)
{
vCritical() << "Received signal" << signal;
qCritical().noquote() << formattedBacktraceString();
qFatal("Aborting due to severe error");
::abort();
}
QString LinuxPlatformPlugin::formattedBacktraceString()
{
static constexpr int BackTraceMaxDepth = 20;
void* stackFrame[BackTraceMaxDepth + 1];
const auto frameCount = backtrace(stackFrame, BackTraceMaxDepth + 1);
char** humanReadableFrames = backtrace_symbols(stackFrame, frameCount);
QStringList list{QLatin1String("BACKTRACE:")};
list.reserve(frameCount);
for (int i = 1; i < frameCount; i++)
{
list.append(QStringLiteral("\t %1").arg( QLatin1String(humanReadableFrames[i])));
}
free(humanReadableFrames);
return list.join(QLatin1String("\n"));
}
IMPLEMENT_CONFIG_PROXY(LinuxPlatformConfiguration)
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