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/*
# Copyright (c) 2009 - OpenSLX Project, Computer Center University of Freiburg
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your suggestions, praise, or complaints to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org/
# --------------------------------------------------------------------------
# inputHandlerChain.cpp:
# - Forward privileged input events to a special handler process - implementation
# --------------------------------------------------------------------------
*/
#include <sys/socket.h>
#include <sys/un.h>
#include <cassert>
#include <cerrno>
#include <cstring>
#include <string>
#include <QSettings>
#include <QtDebug>
#include "pvsPrivInputSocket.h"
#include "privilegedHandlerForwarder.h"
using namespace std;
#ifndef UNIX_PATH_MAX
# define UNIX_PATH_MAX 108 /* according to unix(7) */
#endif
void PrivilegedHandlerForwarder::initialize()
{
QSettings settings(QSettings::NativeFormat, QSettings::SystemScope, "openslx", "pvsinputd");
QString defaultPath = "/tmp/pvsprivinputd.sock";
QByteArray socketPath = settings.value("socketpath", defaultPath).toString().toLocal8Bit();
_socket = pvsPrivInputMakeClientSocket();
if(_socket < 0)
{
return;
}
}
void PrivilegedHandlerForwarder::doHandle(InputEvent const& evt, InputEventContext const*)
{
qDebug("Trying to handle %s in PrivilegedHandlerForwarder", evt.toString().toLocal8Bit().constData());
if(_socket < 0)
{
initialize();
}
QByteArray data;
QDataStream strm(&data, QIODevice::WriteOnly);
strm.setByteOrder(QDataStream::BigEndian);
strm << evt;
assert(data.size() == 8);
int delta = 0;
int count = 0;
do {
delta = write(_socket, data.constData(), data.size());
if(delta < 0)
{
qWarning("Error while communicating with pvsprivinputd: %s", strerror(errno));
close(_socket);
// Try again:
initialize();
}
else if(delta != 8)
{
// This should normally not happen.
qWarning("Could not send a complete packet. Only %d bytes sent", delta);
}
count++;
} while(delta != 8 && count < 3);
}
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