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qcomm.cpp
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qcomm.cpp
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#include "qcomm.h"
#include<QTimerEvent>
#include<QCryptographicHash>
#include<QDebug>
#include<protocol.h>
#include<QDir>
#include<QTextCodec>
#include<stddef.h>
#include<string.h>
#include<qmywsscreensaver.h>
QCOMM::QCOMM(QMyWSScreenSaver *screenSaver,QObject *parent) :
QObject(parent),udpsocket(new QUdpSocket(this)),tcpsocket(new QTcpSocket(this)),heartbeatnum(1)
,filetrans(NULL),nexttcpblocksize(0),screensaver(screenSaver)
{
udpsocket->connectToHost(UDP_DST_IP,6001,QIODevice::ReadWrite);
timerid = startTimer(1000);
tcpsocket->setSocketOption(QAbstractSocket::LowDelayOption,1);
connect(udpsocket, SIGNAL(readyRead()),SLOT(readudppendingdatagrams()));
connect(tcpsocket,SIGNAL(connected()),SLOT(ontcpsocketconneted()));
connect(tcpsocket,SIGNAL(readyRead()),SLOT(readtcppendingdatagrams()));
connect(tcpsocket,SIGNAL(disconnected()),SLOT(ontcpdisconnected()));
}
void QCOMM::timerEvent(QTimerEvent *event)
{
if(event->timerId()==timerid){
HEARTBEAT heart;
heart.header.sizeofpack = sizeof heart;
heart.header.magic[0] ='M';
heart.header.magic[1] ='D';
heart.header.seq = heartbeatnum++;
heart.customerID = 0xaa;
heart.fileterminal = hasterminalfile();
heart.licensetimeout = islicensetimeout();
heart.netinvade = isnetinvade();
heart.numofpack = numberofudppack;
heart.header.crc = qChecksum((char *)(&heart+sizeof (heart.header)),sizeof heart-sizeof (heart.header));
udpsend((char*)&heart,sizeof(heart));
}
}
void QCOMM::readudppendingdatagrams()
{
char data[512];
while(udpsocket->hasPendingDatagrams()){
unsigned int len = udpsocket->read(data,512);
if(len<sizeof(MDHEADER))
continue;
HEARTBEATRESULT *heartack = (HEARTBEATRESULT *)data;
if(!checkMdHeart(heartack->header))
continue;
unsigned short packsize = heartack->header.sizeofpack;
if (packsize<len)
continue;
//if(heartack->header.crc!=qChecksum((char *)&(heartack->funcode),
// len-sizeof (heartack->header)))
// continue;
switch (heartack->funcode){
case UDP_TCPCONNECT:{
QHostAddress addr(ntohl(heartack->ipaddr));
tcpConnect(addr,heartack->port);
break;
}
case UDP_SSHCONNECT:{
unsigned int ipaddr = *(unsigned int *)(heartack->ipaddr);
sshConnect(QHostAddress("ipaddr"),ipaddr);
break;
}
case UDP_MACHINEINFO:
break;
case UDP_HEARTBEATINC:
break;
default:
break;
}
}
}
void QCOMM::ontcpdisconnected()
{
qDebug("tcp disconneted");
if(!filetrans.isNull()){
delete filetrans.data();
}
}
void QCOMM::tcpConnect(QHostAddress addr, unsigned short port)
{
tcpsocket->abort();
qDebug()<<"tcp connnet to:"<<addr.toString();
tcpsocket->connectToHost(addr,port);
}
void QCOMM::sshConnect(QHostAddress addr, unsigned short port)
{
//TODO:sshConnect
Q_UNUSED(addr);
Q_UNUSED(port);
}
void QCOMM::reportpendingfiletras()
{
/*if(hasterminalfile()){
QDir dir("./");
QStringList list = dir.entryList(QStringList()<<"*.TD",QDir::Files);
QByteArray filename;
filename.append(list.at(0));
filename.remove(filename.size()-4,3); //remove "*.TD"
FILETRANSFER *filetransfer = (FILETRANSFER *)malloc(sizeof(TCPHEARDER)+4+filename.size());
for(int i=0;i<filename.size()-1;i++){
filetransfer->fileName[i] = filename.at(i);
}
QFile file(list.at(0));
if(!file.open(QIODevice::ReadOnly))
return;
filetransfer->pos = FileTrans::readTransPos(file);
filetransfer->filesize = file.size();
filetransfer->header.funcode = TCP_FILETRANSFER;
filetransfer->header.sizeofpack = sizeof(TCPHEARDER)+4+filename.size();
file.close();
tcpsocket->write((char *)filetransfer,filetransfer->header.sizeofpack);
free(filetransfer);
}*/
}
void QCOMM::ontcpsocketconneted()
{
qDebug("tcpconneted logining");
login();
//reportpendingfiletras();
}
void QCOMM::readtcppendingdatagrams()
{
QDataStream in(tcpsocket);
in.setByteOrder(QDataStream::LittleEndian);
in.setVersion(QDataStream::Qt_4_7);
unsigned short funcode;
while(1){
if(nexttcpblocksize==0){
if(tcpsocket->bytesAvailable()<2)
break;
in>>nexttcpblocksize;
}
if(tcpsocket->bytesAvailable()<(nexttcpblocksize-2))
break;
int tcpblocksize = nexttcpblocksize;
nexttcpblocksize = 0;
in>>funcode;
Q_ASSERT(sizeof(TCPHEARDER)==4);
unsigned short datasize= tcpblocksize-sizeof(TCPHEARDER);
switch(funcode){
case TCP_DOWNLOADFILE:{
unsigned int filelen;
in>>filelen;
QByteArray filenameRaw = tcpsocket->read(datasize-4);
QString filename(filenameRaw);
qDebug()<<"be required to receive file \""<<filename<<"\";"<<"filelen:"<<filelen;
filetrans = QPointer<FileTrans>(new FileTrans(tcpsocket,filename,filelen));
break;
}
case TCP_FILETRANSFER:{
if(!filetrans.isNull())
filetrans->receivData(datasize);
else{
in.skipRawData(datasize);
qDebug("windowmanager:invalid file transmition task");
}
break;
}
case TCP_MACHINEINFO:
break;
case TCP_FILELIST:{
QDir dir("./media");
QStringList list = dir.entryList(QDir::NoDotAndDotDot|QDir::Files );
QByteArray filenames = list.join(":").toUtf8();
unsigned short lenofack = sizeof(TCPHEARDER)+filenames.size();
FILELISTACK *ack = (FILELISTACK*)malloc(lenofack);
ack->header.sizeofpack = sizeof(TCPHEARDER)+filenames.size();
ack->header.funcode = TCP_FILELIST;
qMemCopy(ack->filenamelist,filenames.data(),filenames.size());
tcpsocket->write((char*)ack,lenofack);
free(ack);
break;
}
case TCP_STARTPLAY:{
QByteArray rawfilename = tcpsocket->read(datasize);
QString filename(rawfilename);
PLAYACK ack;
ack.header.funcode = TCP_STARTPLAY;
ack.header.sizeofpack = sizeof(ack);
screensaver->setPlayFileName(filename);
if(QWSServer::screenSaverActive())
QWSServer::screenSaverActivate(FALSE);
QWSServer::screenSaverActivate(TRUE);
if(QWSServer::screenSaverActive())
ack.ack = 0;
else
ack.ack = -EFILENOTEXIST
tcpsocket->write((char*)&ack,sizeof(ack));
}
case TCP_STOPPLAY:{
STOPPLAYACK ack;
ack.header.funcode = TCP_STOPPLAY;
ack.header.sizeofpack = sizeof(ack);
ack.ack = 0;
tcpsocket->write((char*)&ack,sizeof(ack));
break;
}
default:
break;
}
}
}
void QCOMM::login()
{
LOGIN loginpack;
loginpack.hearder.funcode = TCP_LOGIN;
loginpack.hearder.sizeofpack = sizeof(LOGIN);
loginpack.customerID = 0x55aa;
loginpack.machineID = 0;
tcpsocket->write((char *)&loginpack,sizeof loginpack);
}
bool QCOMM::hasterminalfile()
{
QDir dir("./media");
QStringList list = dir.entryList(QStringList()<<"*.TD",QDir::Files);
if(list.isEmpty())
return FALSE;
else
return TRUE;
}
bool QCOMM::islicensetimeout()
{
return FALSE;
}
bool QCOMM::isnetinvade()
{
return FALSE;
}
bool QCOMM::checkMdHeart(MDHEADER heard)
{
if((heard.magic[0]='M')&&(heard.magic[1]='D'))
return TRUE;
else
return FALSE;
}
qint64 QCOMM::udpsend(const char *data, qint64 size)
{
return udpsocket->write(data,size);
}
QByteArray QCOMM::md5(QFile &file)
{
unsigned char *buf;
bool isopen;
if(!file.exists())
return QByteArray();
if(file.size()==0)
return QByteArray();
if(file.isOpen())
isopen = TRUE;
if(isopen&&(!file.open(QIODevice::ReadOnly)))
return QByteArray();
buf = file.map(0,file.size());
if(isopen)
file.close();
if(0==buf)
return QByteArray();
QByteArray data = QByteArray::fromRawData((char*)buf,file.size());
QByteArray md5 = QCryptographicHash::hash (data, QCryptographicHash::Md5);
file.unmap(buf);
return md5;
}
FileTrans::FileTrans(QTcpSocket *tcp,const QString &filename, unsigned int filelen):ptcp(tcp),pos(0)
{
file.setFileName("media/"+filename);
if(file.exists())
file.remove();
file.setFileName("media/"+filename+".TD");
bool fileexit;
if(filelen>40*1024*1024){
return;
}
if(file.exists()&&(file.size()==filelen-4))
fileexit = TRUE;
if(!file.open(QIODevice::ReadWrite)){
return;
}
if(!file.resize(filelen+4)){
file.close();
return;
}
if(fileexit){
pos = readTransPos();
}
in.setDevice(tcp);
in.setByteOrder(QDataStream::LittleEndian);
out.setDevice(&file);
out.setByteOrder(QDataStream::LittleEndian);
this->filelen = filelen;
timer.setInterval(20000);
timer.setSingleShot(FALSE);
connect(&timer,SIGNAL(timeout()),SLOT(writeTransPos()));
filetransack(pos);
}
FileTrans::~FileTrans()
{
if(pos==filelen){
file.resize(filelen);
QString filename = file.fileName();
filename.truncate(filename.size()-3);
file.rename(filename);
}else{
writeTransPos();
}
}
bool FileTrans::isAvalid()
{
return file.isOpen();
}
void FileTrans::receivData(unsigned short len)
{
unsigned char temp;
unsigned int postemp = pos;
timer.start();
for(;pos<len+postemp;pos++){
in>>temp;
out<<temp;
}
filetransack(filelen);
if(pos==filelen) //file transmit finish
deleteLater();
}
void FileTrans::writeTransPos()
{
if(pos==0)
return;
if(pos==readTransPos())
return;
unsigned int postemp = file.pos();
file.seek(file.size()-4);
QDataStream str(&file);
str.setByteOrder(QDataStream::LittleEndian);
str<<pos;
file.seek(postemp);
}
unsigned int FileTrans::readTransPos()
{
unsigned int postemp = file.pos();
file.seek(file.size()-4);
char buf[4];
unsigned int pos = *(unsigned int*)buf;
file.read(buf,4);
file.seek(postemp);
if(pos<file.size())
return pos;
else
return 0;
}
unsigned int FileTrans::readTransPos(QFile &file)
{
unsigned int postemp = file.pos(); //push file pos
file.seek(file.size()-4);
QDataStream str(&file);
str.setByteOrder(QDataStream::LittleEndian);
unsigned int pos ;
str>>pos;
file.seek(postemp); //pop file pos
if(pos<file.size())
return pos;
else
return 0;
}
void FileTrans::filetransack(unsigned int pos)
{
FILEDATAACK ack;
ack.header.sizeofpack = sizeof(ack);
ack.header.funcode = TCP_FILETRANSFER;
ack.pos = pos;
ptcp->write((char *)&ack,sizeof ack);
}