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cpacketparser.cpp
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cpacketparser.cpp
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#include "cpacketparser.h"
#include <QFile>
#include <QtEndian>
#include <QDateTime>
#include <QTimeZone>
#include <QTextEdit>
#include <QMessageBox>
CPacketParser::CPacketParser(QObject *parent)
: QObject{parent}
{
}
CPacketParser::CPacketParser(
QTableView *tableView, QStandardItemModel *tableModel,
QSortFilterProxyModel *tableProxyModel,
QTreeView *treeView, QStandardItemModel *treeModel,
CHexEditor *textEdit)
{
if (tableView)
m_tableView = tableView;
if (tableModel)
m_tableModel = tableModel;
if (tableProxyModel)
m_tableProxyModel = tableProxyModel;
if (treeView)
m_treeView = treeView;
if (treeModel)
m_treeModel = treeModel;
if (textEdit)
m_textEdit = textEdit;
// 处理左侧TableView的行切换事件,同步在右上TreeView显示Packet Details
connect(tableView->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex )), this, SLOT(on_tableView_CurrentChanged(QModelIndex , QModelIndex)));
// TODO:
connect(tableModel, SIGNAL(rowsInserted(QModelIndex, int , int)), this, SLOT(on_tableRowsInserted(QModelIndex, int, int)));
// 处理右上TreeView选中节点事件,同步在右下TextEdit选中节点对应的报文内容
connect(treeView->selectionModel(), SIGNAL(currentChanged(QModelIndex, QModelIndex )), this, SLOT(on_treeView_CurrentChanged(QModelIndex , QModelIndex)));
// TODO:
connect(m_treeModel, SIGNAL(rowsInserted(QModelIndex, int, int)), this, SLOT(on_rowsInserted(QModelIndex, int, int)));
}
CPacketParser::~CPacketParser()
{
if (m_fileData)
free(m_fileData);
}
PPError_t CPacketParser::OpenFile(QString fileName, bool titanFlag)
{
QFile file(fileName);
if (!file.open(QIODevice::ReadOnly))
{
file.close();
return Error;
}
// 文件数组不空先释放内存
if (!m_fileData)
{
m_fileSize = 0;
m_firstPacketTime = 0;
m_totalPackets = 0;
free(m_fileData);
}
m_fileSize = file.size();
m_fileData = (quint8 *)malloc(m_fileSize);
if (!m_fileData)
{
file.close();
return Error;
}
// 二进制方式读文件
QDataStream ds(&file);
ds.readRawData((char *)m_fileData, m_fileSize);
qDebug("file size: %llu", m_fileSize);
file.close();
// 对于Titan包类型,重构成为标准Cap格式
if (titanFlag)
{
// pcak next generation 报文头,数据整体向左移动0x138字节模拟旧的报文格式
if (m_fileData[0] == 0x0a && m_fileData[1] == 0x0d && m_fileData[2] == 0x0d && m_fileData[3] == 0x0a)
{
#if 0
memmove(m_fileData, m_fileData + 0x13c, m_fileSize - 0x13c);
m_fileSize -= 0x13c;
#endif
QMessageBox::information(nullptr, "EPON Packet Analyzer", "无法支持pcapng格式文件,请用Wireshark转换为以cap结尾的旧格式再尝试加载!", QMessageBox::Ok);
free(m_fileData);
return Error;
}
if (m_fileData[0] != 0xd4 && m_fileData[1] != 0xc3 && m_fileData[2] != 0xb2 && m_fileData[3] != 0xa1)
{
QMessageBox::information(nullptr, "EPON Packet Analyzer", "非标准pcap报文格式,无法解析。", QMessageBox::Ok);
free(m_fileData);
return Error;
}
PCapPacketHeader *pktHeader = nullptr;
PCapPacketHeader *dstPktHeader = nullptr;
PCapFileHeader *fileHeader = (PCapFileHeader *)m_fileData;
quint32 offset = FILE_HEADER_LEN;
quint32 dstOffset = FILE_HEADER_LEN;
quint8 *mirrorData = (quint8 *)malloc(m_fileSize);
quint32 mirrorSize = m_fileSize;
if (!mirrorData)
return OK;
memcpy(mirrorData, m_fileData, m_fileSize);
quint32 count = 0;
while (offset < mirrorSize)
{
pktHeader = (PCapPacketHeader *)&mirrorData[offset];
// qDebug("caplen: %08x, len:%08x", pktHeader->capLen, pktHeader->len);
dstPktHeader = (PCapPacketHeader *)&m_fileData[dstOffset];
dstPktHeader->gmtTime = pktHeader->gmtTime;
dstPktHeader->usTime = pktHeader->usTime;
dstPktHeader->capLen = pktHeader->capLen - 22;
dstPktHeader->len = pktHeader->len - 22;
// copy preamble
offset += PACKET_HEADER_LEN + 18;
dstOffset += PACKET_HEADER_LEN;
memcpy(&m_fileData[dstOffset], &mirrorData[offset], PREAMBLE_LEN);
// copy data payload
offset += (PREAMBLE_LEN + 8);
dstOffset += PREAMBLE_LEN;
memcpy(&m_fileData[dstOffset], &mirrorData[offset], pktHeader->capLen - 26);
offset += (pktHeader->capLen - 26 - PREAMBLE_LEN);
dstOffset += (pktHeader->capLen - 26 - PREAMBLE_LEN);
// titan包没有CRC32,为构造包添加固定CRC32
*(quint32 *)&m_fileData[dstOffset] = 0xffffffff;
dstOffset += 4;
m_fileSize -= 22;
}
qDebug() << "new size after removing titan payload: " << m_fileSize;
free(mirrorData);
}
return OK;
}
PPError_t CPacketParser::ParsingPacket()
{
PCapPacketHeader *pktHeader = nullptr;
quint16 *pEtherType = nullptr;
quint16 etherType = 0;
quint32 offset = 0;
quint32 count = 0;
quint32 rollingTimes = 0;
quint32 lastPacketTime = 0;
quint32 saOffset = 0;
quint32 daOffset = 0;
PacketInfo_T pktInfo;
quint16 *pOpCode = nullptr;
quint16 opCode = 0;
if (!m_fileData)
return Error;
DumpFileHeader();
if (m_fileData[0] != 0xd4 && m_fileData[1] != 0xc3 && m_fileData[2] != 0xb2 && m_fileData[3] != 0xa1)
{
QMessageBox::information(nullptr, "EPON Packet Analyzer", "非标准pcap报文格式,无法解析。", QMessageBox::Ok);
free(m_fileData);
return Error;
}
// 先清空Table
m_tableModel->removeRows(0, m_tableModel->rowCount());
// 跳过文件头
offset = FILE_HEADER_LEN;
// 解析报文
while (offset < m_fileSize)
{
pktHeader = (PCapPacketHeader *)&m_fileData[offset];
if (count == 0)
{
m_firstPacketTime = pktHeader->usTime;
lastPacketTime = pktHeader->usTime;
}
if (pktHeader->usTime < lastPacketTime)
{
rollingTimes++;
qDebug() << "rolling at index: " << count + 1;
qDebug() << "rolling times : " << rollingTimes;
}
count++;
QList<QStandardItem *> valueList;
QString strMac;
// Seq No, column #0
QStandardItem *value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
value->setText(QString("%1").arg(count));
valueList << value;
// Arrival time, column#1
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
QString strTime;
strTime.setNum((pktHeader->usTime + 1000000 * rollingTimes - m_firstPacketTime) / 1000000.0, 'f', 6);
value->setText(strTime);
valueList << value;
// SA, column#2
saOffset = offset + PACKET_HEADER_LEN + MAC_ADDR_LEN + PREAMBLE_LEN;
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
strMac = QString::asprintf("%02x:%02x:%02x:%02x:%02x:%02x", m_fileData[saOffset], m_fileData[saOffset + 1], m_fileData[saOffset + 2],
m_fileData[saOffset + 3], m_fileData[saOffset + 4], m_fileData[saOffset + 5]);
value->setText(strMac);
valueList << value;
// DA, column#3
daOffset = offset + PACKET_HEADER_LEN + PREAMBLE_LEN;
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignHCenter | Qt::AlignVCenter);
strMac = QString::asprintf("%02x:%02x:%02x:%02x:%02x:%02x", m_fileData[daOffset], m_fileData[daOffset + 1], m_fileData[daOffset + 2],
m_fileData[daOffset + 3], m_fileData[daOffset + 4], m_fileData[daOffset + 5]);
value->setText(strMac);
valueList << value;
// EtherType, column#4
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
pEtherType = (quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + MAC_ADDR_LEN * 2 + PREAMBLE_LEN];
etherType = qToBigEndian(*pEtherType);
QString strEtherType;
if (etherType == 0x8808)
strEtherType = "MPCP";
else if (etherType == 0x8809)
strEtherType = "OAM";
else if (etherType == 0x800)
strEtherType = "IPv4";
else if (etherType == 0x806)
strEtherType = "ARP";
else if (etherType == 0x86dd)
strEtherType = "IPv6";
else
strEtherType = QString::asprintf("%#04x", etherType);
value->setText(strEtherType);
valueList << value;
// Sub Type Protocol, column#5
QString strSubProtocol("");
if (etherType == 0x8808)
{
pOpCode = (quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN];
opCode = qToBigEndian(*pOpCode);
if (opCode == 0x2)
strSubProtocol.append("GATE");
else if (opCode == 0x3)
strSubProtocol.append("REPORT");
else if (opCode == 0x4)
strSubProtocol.append("REG-REQ");
else if (opCode == 0x05)
strSubProtocol.append("REGISTER");
else if (opCode == 0x06)
strSubProtocol.append("REG-ACK");
else
strSubProtocol.append("UNKNOWN");
}
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
value->setText(strSubProtocol);
valueList << value;
// Cap length, column#6
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignRight | Qt::AlignVCenter);
value->setText(QString("%1").arg(pktHeader->capLen));
valueList << value;
// Extra infomation, column#7
QString strInfo("");
if (etherType == 0x8808)
{
quint16 llid = qToBigEndian(*(quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + 3]);
strInfo.append(QString("LLID(0x%1)").arg(llid, 4, 16, QChar('0')));
if (opCode == 0x2)
{
quint8 gateFlag = m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6];
quint16 grantLen = qToBigEndian(*(quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6 + 1 + 4]);
strInfo.append(QString(", Grant-Len: %1(TQ)").arg(grantLen));
if ((gateFlag >> 3) & 0x1)
strInfo.append(QString(", Discovery Gate."));
else
strInfo.append(QString(", Normal Gate."));
}
else if (opCode == 0x3)
{
quint8 queueSets = m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6];
quint8 bitmap = 0;
quint8 validQueueNums = 0;
quint16 totalValidQueues = 0;
quint32 totalReportLen = 0;
strInfo.append(", ");
for (int i=0; i<queueSets; i++)
{
bitmap = m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6 + 1 + (i * 1) + totalValidQueues * 2];
validQueueNums = 0;
for (int k=0; k<8; k++)
{
if ((bitmap >> k) & 0x1)
validQueueNums++;
}
strInfo.append(QString("QSet-%1: ").arg(i));
for (int j=0; j<validQueueNums; j++)
{
quint16 reportLen = qToBigEndian(*(quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6 + 1 + (i * 1 + 1) + totalValidQueues * 2 + j * 2]);
totalReportLen += reportLen;
if (j == validQueueNums - 1)
{
if (i == queueSets - 1)
strInfo.append(QString("%1(TQ).").arg(reportLen));
else
strInfo.append(QString("%1(TQ), ").arg(reportLen));
}
else
strInfo.append(QString("%1-").arg(reportLen));
}
totalValidQueues += validQueueNums;
}
if (totalReportLen == 0) // no report information, display LLID only.
strInfo = QString("LLID(0x%1)").arg(llid, 4, 16, QChar('0'));
}
else if (opCode == 0x4)
{
quint8 regFlag = m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6];
if (regFlag == 0x1)
strInfo.append(QString(", Register Request."));
else if (regFlag == 0x3)
strInfo.append(QString(", De-register Request."));
else
strInfo.append(QString(", flag: 0x%1.").arg(regFlag, 2, 16, QChar('0')));
}
else if (opCode == 0x5)
{
quint16 assignedPort = qToBigEndian(*(quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6]);
strInfo.append(QString(", Assigned-Port: 0x%1.").arg(assignedPort, 4, 16, QChar('0')));
}
else if (opCode == 0x6)
{
}
}
value = new QStandardItem;
value->setEditable(false);
value->setTextAlignment(Qt::AlignLeft | Qt::AlignVCenter);
value->setText(strInfo);
valueList << value;
m_tableModel->appendRow(valueList);
//m_tableModel->insertRow(m_tableModel->rowCount(), valueList);
// 保存包序号、包内容(含PackettHeader)索引开始位置以及时间翻转次数到用户私有数据
pktInfo.seqNo = count;
pktInfo.pos = offset;
pktInfo.rollingTimes = rollingTimes;
pktInfo.lastUsTime = lastPacketTime;
QModelIndex index = m_tableModel->index(m_tableModel->rowCount() - 1, 0);
QVariant var = QVariant::fromValue(pktInfo);
m_tableModel->setData(index, var, Qt::UserRole);
lastPacketTime = pktHeader->usTime;
offset = offset + PACKET_HEADER_LEN + pktHeader->capLen;
}
qDebug() << "total counts: " << count;
m_totalPackets = count;
// 调整行高 - 无效
// m_tableView->resizeColumnsToContents();
// m_tableView->resizeRowsToContents();
return OK;
}
void CPacketParser::DumpFileHeader()
{
PCapFileHeader *fileHeader = (PCapFileHeader *)&m_fileData[0];
qDebug() << "==== File Header ====";
qDebug("magic : %#08x", fileHeader->magic);
qDebug("majorVer : %#04x", fileHeader->majorVer);
qDebug("minorVer : %#04x", fileHeader->minorVer);
qDebug("thisZone : %#08x", fileHeader->thisZone);
qDebug("sigFigs : %#08x", fileHeader->sigFigs);
qDebug("snapLen : %#08x", fileHeader->snapLen);
qDebug("linkType : %#08x", fileHeader->linkType);
}
void CPacketParser::on_tableView_CurrentChanged(const QModelIndex &curr, const QModelIndex &prev)
{
QModelIndex index;
quint32 offset = 0;
quint32 pktStartPos = 0;
PCapPacketHeader *pktHeader = nullptr;
quint16 etherType = 0;
quint16 opCode = 0;
FieldInfo_T fieldInfo;
QVariant varFieldInfo;
if (!curr.isValid())
return;
// 关键,先转换获取排序前数据源对应的索引
QModelIndex srcIndex = m_tableProxyModel->mapToSource(curr);
// packet info信息储存在[row, 0],获得[row, 0]索引而后读取私有数据
index = m_tableModel->index(srcIndex.row(), 0);
//index = m_tableModel->index(curr.row(), 0);
if (!index.isValid())
return;
QVariant var = m_tableModel->data(index, Qt::UserRole);
if (var.canConvert<PacketInfo_T>())
{
//清除右上TreeView
m_treeModel->removeRows(0, m_treeModel->rowCount());
PacketInfo_T pktInfo = var.value<PacketInfo_T>();
qDebug("seqNo(%d), rollingtimes(%d), pos(%d)\n", pktInfo.seqNo, pktInfo.rollingTimes, pktInfo.pos);
offset = pktInfo.pos; // 在m_fileData中的偏移,包括packet header
pktStartPos = pktInfo.pos + PACKET_HEADER_LEN; // 实际数据包开始位置,不包括packet header
pktHeader = (PCapPacketHeader *)&m_fileData[offset];
qDebug() << "capLen:" <<pktHeader->capLen;
qDebug() << "GMT :" <<pktHeader->gmtTime;
qDebug() << "usTime:" <<pktHeader->usTime;
// dump data TextEdit
dumpPacketData(&m_fileData[offset + PACKET_HEADER_LEN], pktHeader->capLen);
// 获取不可见的根节点指针
QStandardItem *rootNode = m_treeModel->invisibleRootItem();
// Frame I 父节点
QStandardItem *frameNode = new QStandardItem(QString("Frame I: %1 bytes on wire.").arg(pktHeader->capLen));
fieldInfo.pos = 0;
fieldInfo.len = pktHeader->capLen;
varFieldInfo = QVariant::fromValue(fieldInfo);
frameNode->setData(varFieldInfo, Qt::UserRole);
rootNode->appendRow(frameNode);
// 转换GMT时间
QDateTime dateTime;
dateTime.setSecsSinceEpoch(pktHeader->gmtTime);
// Frame I --> 绝对时间
QStandardItem *gmtTime = new QStandardItem(dateTime.toString());
frameNode->appendRow(gmtTime);
// Frame I --> 微妙级到达时间,每1秒翻转
QStandardItem *arrivalTime = new QStandardItem(QString("到达时间: %1us").arg(pktHeader->usTime));
frameNode->appendRow(arrivalTime);
// Frame I --> 前帧间隔
QStandardItem *intervalFromPrevPacket = new QStandardItem(QString("前帧间隔: %1us").arg(pktHeader->usTime - pktInfo.lastUsTime));
frameNode->appendRow(intervalFromPrevPacket);
// Frame I --> 首帧间隔
QStandardItem *intervalFromFirstPacket = new QStandardItem(QString("首帧间隔: %1us").arg(pktHeader->usTime + 1000000 * pktInfo.rollingTimes - m_firstPacketTime));
frameNode->appendRow(intervalFromFirstPacket);
// Preamble 节点
offset += PACKET_HEADER_LEN;
QStandardItem *preambleNode = new QStandardItem(QString("Preamble: 6 bytes."));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = PREAMBLE_LEN;
varFieldInfo = QVariant::fromValue(fieldInfo);
preambleNode->setData(varFieldInfo, Qt::UserRole);
rootNode->appendRow(preambleNode);
QStandardItem *sldNode = new QStandardItem(QString("SLD : 0x%1").arg(m_fileData[offset], 0, 16));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
sldNode->setData(varFieldInfo, Qt::UserRole);
preambleNode->appendRow(sldNode);
// 添加 Preamble.rsvd节点
offset += 1; // skip SLD
QStandardItem *rsvdNode = new QStandardItem(QString("RSVD: 0x%1").arg(qToBigEndian(*(quint16 *)&m_fileData[offset]), 0, 16));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
rsvdNode->setData(varFieldInfo, Qt::UserRole);
preambleNode->appendRow(rsvdNode);
// 添加 Preamble.llid节点
offset += 2; // skip rsvd
QStandardItem *llidNode = new QStandardItem(QString("LLID: 0x%1").arg(qToBigEndian(*(quint16 *)&m_fileData[offset]), 0, 16));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
llidNode->setData(varFieldInfo, Qt::UserRole);
preambleNode->appendRow(llidNode);
offset +=2; // skip llid
QStandardItem *crc8Node = new QStandardItem(QString("CRC8: 0x%1").arg(m_fileData[offset], 0, 16));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
crc8Node->setData(varFieldInfo, Qt::UserRole);
preambleNode->appendRow(crc8Node);
// Ethernet 父节点
offset +=1; // skip crc8
QStandardItem *etherNode = new QStandardItem(QString("Ethernet: 14 bytes."));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = pktHeader->capLen - PREAMBLE_LEN;
varFieldInfo = QVariant::fromValue(fieldInfo);
etherNode->setData(varFieldInfo, Qt::UserRole);
rootNode->appendRow(etherNode);
// DA子节点
QString strMAC = QString::asprintf("DMAC: %02x:%02x:%02x:%02x:%02x:%02x",
m_fileData[offset], m_fileData[offset + 1], m_fileData[offset + 2],
m_fileData[offset + 3], m_fileData[offset + 4], m_fileData[offset + 5]);
QStandardItem *daNode = new QStandardItem(strMAC);
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = MAC_ADDR_LEN;
varFieldInfo = QVariant::fromValue(fieldInfo);
daNode->setData(varFieldInfo, Qt::UserRole);
etherNode->appendRow(daNode);
// SA子节点
offset += MAC_ADDR_LEN;
strMAC = QString::asprintf("SMAC: %02x:%02x:%02x:%02x:%02x:%02x",
m_fileData[offset], m_fileData[offset + 1], m_fileData[offset + 2],
m_fileData[offset + 3], m_fileData[offset + 4], m_fileData[offset + 5]);
QStandardItem *saNode = new QStandardItem(strMAC);
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = MAC_ADDR_LEN;
varFieldInfo = QVariant::fromValue(fieldInfo);
saNode->setData(varFieldInfo, Qt::UserRole);
etherNode->appendRow(saNode);
// EtherType子节点
offset += MAC_ADDR_LEN;
etherType = qToBigEndian(*(quint16 *)&m_fileData[offset]);
QStandardItem *ethTypeNode = new QStandardItem(QString("Type: 0x%1").arg(etherType, 4, 16, QChar('0')));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
ethTypeNode->setData(varFieldInfo, Qt::UserRole);
etherNode->appendRow(ethTypeNode);
if (etherType != 0x8808)
{
QStandardItem *dataNode = new QStandardItem(QString("Payload: %1 byes.").arg(pktHeader->capLen - PACKET_HEADER_LEN - PREAMBLE_LEN - ETH_HEADER_LEN));
rootNode->appendRow(dataNode);
m_treeView->expandAll();
return;
}
// 解析MPCP报文
offset += 2;
QStandardItem *mpcpNode = new QStandardItem(QString("MPCP: %1 bytes.").arg(pktHeader->capLen - ETH_HEADER_LEN - PREAMBLE_LEN - 4));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = pktHeader->capLen - (ETH_HEADER_LEN + PREAMBLE_LEN);
varFieldInfo = QVariant::fromValue(fieldInfo);
mpcpNode->setData(varFieldInfo, Qt::UserRole);
rootNode->appendRow(mpcpNode);
// OpCode字段
opCode = qToBigEndian(*(quint16 *)&m_fileData[offset]);
QStandardItem *opCodeNode = new QStandardItem(QString("Oper-Code: 0x%1").arg(opCode, 4, 16, QChar('0')));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
opCodeNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(opCodeNode);
// Timestamp字段
offset += 2;
QStandardItem *tsNode = new QStandardItem(QString("TimeStamp: %1(TQ)").arg(qToBigEndian(*(quint32 *)&m_fileData[offset + 2])));
fieldInfo.pos = offset - pktStartPos;
fieldInfo.len = 4;
varFieldInfo = QVariant::fromValue(fieldInfo);
tsNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(tsNode);
offset += 4; // skip timestamp
if (opCode == 2)
mpcpGateHandler(mpcpNode, pktHeader, offset, pktStartPos);
else if (opCode == 3)
mpcpReportHandler(mpcpNode, pktHeader, offset, pktStartPos);
m_treeView->expandAll();
}
}
void CPacketParser::on_treeView_CurrentChanged(const QModelIndex &curr, const QModelIndex &prev)
{
QVariant varFieldInfo = m_treeModel->data(curr, Qt::UserRole);
if (varFieldInfo.canConvert<FieldInfo_T>())
{
FieldInfo_T fieldInfo = varFieldInfo.value<FieldInfo_T>();
qDebug() << "fieldInfo: " << fieldInfo.pos << fieldInfo.len;
QTextCursor cursor = m_textEdit->textCursor();
cursor.setPosition(fieldInfo.pos * 3);
cursor.setPosition(fieldInfo.pos * 3 + fieldInfo.len * 3 - 1, QTextCursor::KeepAnchor);
m_textEdit->setTextCursor(cursor);
}
}
void CPacketParser::on_rowsInserted(const QModelIndex &parent, int first, int last)
{
}
void CPacketParser::on_tableRowsInserted(const QModelIndex &parent, int first, int last)
{
}
void CPacketParser::mpcpGateHandler(QStandardItem *mpcpNode, PCapPacketHeader *pktHeader, quint32 fileOffset, quint32 pktStartPos)
{
FieldInfo_T fieldInfo;
QVariant varFieldInfo;
// gate flag 节点
QStandardItem *flagNode = new QStandardItem(QString("GateFlag : 0x%1").arg(m_fileData[fileOffset], 2, 16, QChar('0')));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
flagNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(flagNode);
// grant number子节点,fieldInfo数据与gate flag父节点相同
QStandardItem *grantNumberNode = new QStandardItem(QString("GrantNumber: %1").arg(m_fileData[fileOffset] & 0x1));
grantNumberNode->setData(varFieldInfo, Qt::UserRole);
flagNode->appendRow(grantNumberNode);
// gate indicator子节点,fieldInfo数据与gate flag父节点相同
quint8 gateInd = (m_fileData[fileOffset] >> 3) & 0x1;
QString strGateInd = QString("Indicator : %1").arg(gateInd);
if (gateInd)
strGateInd.append(" (Discovery Gate)");
else
strGateInd.append(" (Normal Gate)");
QStandardItem *indicatorNode = new QStandardItem(strGateInd);
grantNumberNode->setData(varFieldInfo, Qt::UserRole);
flagNode->appendRow(indicatorNode);
// force report子节点,fieldInfo数据与gate flag父节点相同
QStandardItem *forceReportNode = new QStandardItem(QString("ForceReport: %1").arg((m_fileData[fileOffset] >> 4) & 0x1));
forceReportNode->setData(varFieldInfo, Qt::UserRole);
flagNode->appendRow(forceReportNode);
// gate start time 节点
fileOffset += 1; // skip gate flag field
QStandardItem *startTimeNode = new QStandardItem(QString("StartTime: %1(TQ)").arg(qToBigEndian(*(quint32 *)&m_fileData[fileOffset])));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 4;
varFieldInfo = QVariant::fromValue(fieldInfo);
startTimeNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(startTimeNode);
// gate length 节点
fileOffset += 4; // skip start time field
QStandardItem *lengthNode = new QStandardItem(QString("Length : %1(TQ)").arg(qToBigEndian(*(quint16 *)&m_fileData[fileOffset])));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
lengthNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(lengthNode);
// padding 字段
fileOffset += 2; // skip gate length field
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = pktHeader->capLen - fieldInfo.pos - 4; // minus CRC32 length
varFieldInfo = QVariant::fromValue(fieldInfo);
QString strPadding(fieldInfo.len * 2, QChar('0'));
QStandardItem *paddingNode = new QStandardItem(QString("Padding : ") + strPadding);
paddingNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(paddingNode);
// CRC32 字段
fileOffset += fieldInfo.len; // skip padding
QStandardItem *crc32Node = new QStandardItem(QString("CRC32 : 0x%1").arg(qToBigEndian(*(quint32 *)&m_fileData[fileOffset]), 0, 16));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 4;
varFieldInfo = QVariant::fromValue(fieldInfo);
crc32Node->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(crc32Node);
}
void CPacketParser::mpcpReportHandler(QStandardItem *reportNode, PCapPacketHeader *pktHeader, quint32 fileOffset, quint32 pktStartPos)
{
FieldInfo_T fieldInfo;
QVariant varFieldInfo;
quint8 queueSetNums = 0;
// report 节点
queueSetNums = m_fileData[fileOffset];
QStandardItem *qSetNumsNode = new QStandardItem(QString("QueueSetNums: %1").arg(queueSetNums));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
qSetNumsNode->setData(varFieldInfo, Qt::UserRole);
reportNode->appendRow(qSetNumsNode);
// queue-set group
fileOffset += 1; // skip queue set number field
for (int i=0; i<queueSetNums; i++)
{
QStandardItem *qSetNode = new QStandardItem(QString("QueueSet#%1 : 3 bytes.").arg(i));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 3;
varFieldInfo = QVariant::fromValue(fieldInfo);
qSetNode->setData(varFieldInfo, Qt::UserRole);
reportNode->appendRow(qSetNode);
// queue-set.reportBitmap field
quint8 rptBitmap = m_fileData[fileOffset];
QStandardItem *rptBmpNode = new QStandardItem(QString("ReportBitmap: 0x%1").arg(m_fileData[fileOffset], 2, 16, QChar('0')));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
rptBmpNode->setData(varFieldInfo, Qt::UserRole);
qSetNode->appendRow(rptBmpNode);
fileOffset += 1; // skip report bitmap field
for (int k=0; k<8; k++)
{
if ((rptBitmap >> k) & 0x1)
{
// queue-set.queue_x_length field
QStandardItem *queueLength = new QStandardItem(QString("Queue[%1]-Len: %2(TQ)").arg(k).arg(qToBigEndian(*(quint16 *)&m_fileData[fileOffset])));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 2;
varFieldInfo = QVariant::fromValue(fieldInfo);
queueLength->setData(varFieldInfo, Qt::UserRole);
qSetNode->appendRow(queueLength);
fileOffset += 2; // skip queue_k_length
}
}
}
// padding 字段
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = pktHeader->capLen - fieldInfo.pos - 4; // minus CRC32 length
varFieldInfo = QVariant::fromValue(fieldInfo);
QString strPadding(fieldInfo.len * 2, QChar('0'));
QStandardItem *paddingNode = new QStandardItem(QString("Padding : ") + strPadding);
paddingNode->setData(varFieldInfo, Qt::UserRole);
reportNode->appendRow(paddingNode);
// CRC32 字段
fileOffset += fieldInfo.len; // skip padding
QStandardItem *crc32Node = new QStandardItem(QString("CRC32 : 0x%1").arg(qToBigEndian(*(quint32 *)&m_fileData[fileOffset]), 0, 16));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 4;
varFieldInfo = QVariant::fromValue(fieldInfo);
crc32Node->setData(varFieldInfo, Qt::UserRole);
reportNode->appendRow(crc32Node);
}
void CPacketParser::mpcpRegReqHandler(QStandardItem *mpcpNode, PCapPacketHeader *pktHeader, quint32 fileOffset, quint32 pktStartPos)
{
FieldInfo_T fieldInfo;
QVariant varFieldInfo;
// flags节点
quint8 flags = m_fileData[fileOffset];
QStandardItem *flagsNode = new QStandardItem(QString("Flags: 0x%1").arg(flags, 2, 16, QChar('0')));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
flagsNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(flagsNode);
// pending grant节点
fileOffset += 1; // skip flags field
QStandardItem *pendingNode = new QStandardItem(QString("Pending-Grants: %1").arg(m_fileData[fileOffset]));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 1;
varFieldInfo = QVariant::fromValue(fieldInfo);
pendingNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(pendingNode);
// padding节点
fileOffset += 1;
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = pktHeader->capLen - fieldInfo.pos - 4; // minus CRC32 length
varFieldInfo = QVariant::fromValue(fieldInfo);
QString strPadding(fieldInfo.len * 2, QChar('0'));
QStandardItem *paddingNode = new QStandardItem(QString("Padding : ") + strPadding);
paddingNode->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(paddingNode);
// CRC32 字段
fileOffset += fieldInfo.len; // skip padding
QStandardItem *crc32Node = new QStandardItem(QString("CRC32 : 0x%1").arg(qToBigEndian(*(quint32 *)&m_fileData[fileOffset]), 0, 16));
fieldInfo.pos = fileOffset - pktStartPos;
fieldInfo.len = 4;
varFieldInfo = QVariant::fromValue(fieldInfo);
crc32Node->setData(varFieldInfo, Qt::UserRole);
mpcpNode->appendRow(crc32Node);
}
void CPacketParser::dumpPacketData(quint8 *data, quint32 len)
{
QString strData;
m_textEdit->clear();
m_textEdit->setData(data, len);
#if 0
for (int i=0; i<len; i++)
{
if ((i & 0xf) == 0xf)
{
if (i == len - 1)
strData.append(QString("%1").arg(data[i], 2, 16, QChar('0')));
else
strData.append(QString("%1\n").arg(data[i], 2, 16, QChar('0')));
}
else
{
if (i == len - 1)
strData.append(QString("%1").arg(data[i], 2, 16, QChar('0')));
else
strData.append(QString("%1 ").arg(data[i], 2, 16, QChar('0')));
}
}
m_textEdit->appendPlainText(strData);
#endif
}
QStringList CPacketParser::gateCheck()
{
PCapPacketHeader *pktHeader = nullptr;
quint16 *pEtherType = nullptr;
quint16 etherType = 0;
quint32 offset = 0;
quint32 count = 0;
quint32 lastGateSeqNo = 0;
quint32 lastGrantStartTime = 0;
quint32 lastGrantLen = 0;
quint16 *pOpCode = nullptr;
quint16 opCode = 0;
QStringList result;
quint32 gateFrameCount = 0;
quint32 gateOverrlapingCount = 0;
if (!m_fileData)
return QStringList();
// 跳过文件头
offset = FILE_HEADER_LEN;
// 解析报文
while (offset < m_fileSize)
{
pktHeader = (PCapPacketHeader *)&m_fileData[offset];
count++;
pEtherType = (quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + MAC_ADDR_LEN * 2 + PREAMBLE_LEN];
etherType = qToBigEndian(*pEtherType);
if (etherType == 0x8808)
{
pOpCode = (quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN];
opCode = qToBigEndian(*pOpCode);
// Gate Frame
if (opCode == 0x2)
{
quint8 gateFlag = m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6];
quint32 grantStartTime = qToBigEndian(*(quint32 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6 + 1]);
quint16 grantLen = qToBigEndian(*(quint16 *)&m_fileData[offset + PACKET_HEADER_LEN + ETH_HEADER_LEN + PREAMBLE_LEN + 6 + 1 + 4]);
//if ((gateFlag >> 3) & 0x1)
int guardBand = 8;
gateFrameCount++;
// overlap
if ((lastGrantStartTime + lastGrantLen + guardBand) > grantStartTime)
{
gateOverrlapingCount++;
result << QString("Grant overlapped: SeqNo[%1](start: %2,len: %3) <-> SeqNo[%4](start: %5,len: %6)").
arg(count).arg(grantStartTime).arg(grantLen).
arg(lastGateSeqNo).arg(lastGrantStartTime).arg(lastGrantLen);
}
lastGateSeqNo = count;
lastGrantLen = grantLen;
lastGrantStartTime = grantStartTime;
}
}
// 保存包序号、包内容(含PackettHeader)索引开始位置以及时间翻转次数到用户私有数据
offset = offset + PACKET_HEADER_LEN + pktHeader->capLen;
}
result << QString("===============================\n%1 gate frames were checked.").arg(gateFrameCount);
if (result.count() == 1)
result << "No overlapped windows in the file.";
else
result << QString("%1 grant windows overlapped.").arg(gateOverrlapingCount);
qDebug() << "total counts: " << count;
return result;
}