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/*
Copyright (C) 2011 Srivats P.
This file is part of "Ostinato"
This 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 3 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. If not, see <http://www.gnu.org/licenses/>
*/
#include "pdmlprotocols.h"
#include "hexdump.pb.h"
// ---------------------------------------------------------- //
// PdmlUnknownProtocol //
// ---------------------------------------------------------- //
PdmlUnknownProtocol::PdmlUnknownProtocol()
{
ostProtoId_ = OstProto::Protocol::kHexDumpFieldNumber;
endPos_ = expPos_ = -1;
}
PdmlProtocol* PdmlUnknownProtocol::createInstance()
{
return new PdmlUnknownProtocol();
}
void PdmlUnknownProtocol::preProtocolHandler(QString /*name*/,
const QXmlStreamAttributes &attributes, int expectedPos,
OstProto::Protocol* /*pbProto*/, OstProto::Stream *stream)
{
bool isOk;
int size;
int pos = attributes.value("pos").toString().toUInt(&isOk);
if (!isOk)
{
if (expectedPos >= 0)
expPos_ = pos = expectedPos;
else
goto _skip_pos_size_proc;
}
size = attributes.value("size").toString().toUInt(&isOk);
if (!isOk)
goto _skip_pos_size_proc;
// If pos+size goes beyond the frame length, this is a "reassembled"
// protocol and should be skipped
if ((pos + size) > int(stream->core().frame_len()))
goto _skip_pos_size_proc;
expPos_ = pos;
endPos_ = expPos_ + size;
_skip_pos_size_proc:
OstProto::HexDump *hexDump = stream->mutable_protocol(
stream->protocol_size()-1)->MutableExtension(OstProto::hexDump);
hexDump->set_pad_until_end(false);
}
void PdmlUnknownProtocol::prematureEndHandler(int pos,
OstProto::Protocol* /*pbProto*/, OstProto::Stream* /*stream*/)
{
endPos_ = pos;
}
void PdmlUnknownProtocol::postProtocolHandler(OstProto::Protocol *pbProto,
OstProto::Stream *stream)
{
OstProto::HexDump *hexDump = pbProto->MutableExtension(OstProto::hexDump);
// Skipped field(s) at end? Pad with zero!
if (endPos_ > expPos_)
{
QByteArray hexVal(endPos_ - expPos_, char(0));
hexDump->mutable_content()->append(hexVal.constData(), hexVal.size());
expPos_ += hexVal.size();
}
qDebug(" hexdump: expPos_ = %d, endPos_ = %d\n", expPos_, endPos_);
// If empty for some reason, remove the protocol
if (hexDump->content().size() == 0)
stream->mutable_protocol()->RemoveLast();
endPos_ = expPos_ = -1;
}
void PdmlUnknownProtocol::unknownFieldHandler(QString name, int pos,
int /*size*/, const QXmlStreamAttributes &attributes,
OstProto::Protocol *pbProto, OstProto::Stream* /*stream*/)
{
OstProto::HexDump *hexDump = pbProto->MutableExtension(OstProto::hexDump);
qDebug(" hexdump: %s, pos = %d, expPos_ = %d, endPos_ = %d\n",
qPrintable(name),
pos, expPos_, endPos_);
// Skipped field? Pad with zero!
if ((pos > expPos_) && (expPos_ < endPos_))
{
QByteArray hexVal(pos - expPos_, char(0));
hexDump->mutable_content()->append(hexVal.constData(), hexVal.size());
expPos_ += hexVal.size();
}
if (pos == expPos_)
{
QByteArray hexVal = attributes.value("unmaskedvalue").isEmpty() ?
QByteArray::fromHex(attributes.value("value").toString().toUtf8()) :
QByteArray::fromHex(attributes.value("unmaskedvalue").toString().toUtf8());
hexDump->mutable_content()->append(hexVal.constData(), hexVal.size());
expPos_ += hexVal.size();
}
}
// ---------------------------------------------------------- //
// PdmlGenInfoProtocol //
// ---------------------------------------------------------- //
PdmlGenInfoProtocol::PdmlGenInfoProtocol()
{
}
PdmlProtocol* PdmlGenInfoProtocol::createInstance()
{
return new PdmlGenInfoProtocol();
}
// ---------------------------------------------------------- //
// PdmlFrameProtocol //
// ---------------------------------------------------------- //
PdmlFrameProtocol::PdmlFrameProtocol()
{
}
PdmlProtocol* PdmlFrameProtocol::createInstance()
{
return new PdmlFrameProtocol();
}
void PdmlFrameProtocol::unknownFieldHandler(QString name, int /*pos*/,
int /*size*/, const QXmlStreamAttributes &attributes,
OstProto::Protocol* /*pbProto*/, OstProto::Stream *stream)
{
if (name == "frame.len")
{
int len = -1;
if (!attributes.value("show").isEmpty())
len = attributes.value("show").toString().toInt();
stream->mutable_core()->set_frame_len(len+4); // TODO:check FCS
}
else if (name == "frame.time_delta")
{
if (!attributes.value("show").isEmpty())
{
QString delta = attributes.value("show").toString();
int decimal = delta.indexOf('.');
if (decimal >= 0)
{
const double kNsecsInSec = 1e9;
uint sec = delta.left(decimal).toUInt();
uint nsec = delta.mid(decimal+1).toUInt();
uint ipg = sec*kNsecsInSec + nsec;
if (ipg)
{
stream->mutable_control()->set_packets_per_sec(
kNsecsInSec/ipg);
}
qDebug("sec.nsec = %u.%u, ipg = %u", sec, nsec, ipg);
}
}
}
else if (name == "frame.number")
stream->mutable_control()->set_num_packets(1);
}
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