void CG2Node::OnQuery(G2Packet *pPacket)
{
// just read guid for now to have it in routing table
QUuid oGUID;
if( pPacket->m_bCompound )
pPacket->SkipCompound();
if( pPacket->GetRemaining() >= 16 )
{
oGUID = pPacket->ReadGUID();
Network.m_oRoutingTable.Add(oGUID, this, false);
if( m_nType == G2_LEAF ) // temporary
{
G2Packet* pQA = G2Packet::New("QA", true);
quint32 tNow = time(0);
pQA->WritePacket("TS", 4)->WriteIntLE(tNow);
pQA->WritePacket("D", 8)->WriteHostAddress(&Network.m_oAddress);
pQA->WriteIntLE(Network.m_nLeavesConnected);
quint32 nCount = 0;
for( uint i = 0; i < HostCache.size() && nCount < 100u; i++, nCount++ )
{
pQA->WritePacket("S", 6)->WriteHostAddress(&HostCache.m_lHosts[i]->m_oAddress);
}
pQA->WriteByte(0);
pQA->WriteGUID(oGUID);
//qDebug() << "Sending query ACK " << pQA->ToHex() << pQA->ToASCII();
SendPacket(pQA, true, true);
}
}
}
G2Packet* CQuery::ToG2Packet(CEndPoint* pAddr, quint32 nKey)
{
G2Packet* pPacket = G2Packet::New("Q2", true);
//bool bWantURL = true;
bool bWantDN = (!m_sDescriptiveName.isEmpty());
bool bWantMD = !m_sMetadata.isEmpty();
//bool bWantPFS = true;
if(pAddr)
{
G2Packet* pUDP = pPacket->WritePacket("UDP", 10);
pUDP->WriteHostAddress(pAddr);
pUDP->WriteIntLE(nKey);
}
if(bWantDN)
{
pPacket->WritePacket("DN", m_sDescriptiveName.toUtf8().size())->WriteString(m_sDescriptiveName, false);
}
if(bWantMD)
{
pPacket->WritePacket("MD", m_sMetadata.toUtf8().size())->WriteString(m_sMetadata, false);
}
foreach(CHash pHash, m_lHashes)
{
pPacket->WritePacket("URN", pHash.GetFamilyName().size() + CHash::ByteCount(pHash.getAlgorithm()) + 1);
pPacket->WriteString(pHash.GetFamilyName() + "\0" + pHash.RawValue(), false);
}
void CG2Node::SendStartups()
{
if( Network.IsListening() )
{
IPv4_ENDPOINT addr = Network.GetLocalAddress();
G2Packet* pPacket = G2Packet::New("PI", true);
pPacket->WritePacket("UDP", 6);
pPacket->WriteHostAddress(&addr);
pPacket->WritePacket("TFW", 0);
SendPacket(pPacket, false, true);
}
SendLNI();
}
void CNetwork::DispatchKHL()
{
QMutexLocker l(&Neighbours.m_pSection);
if(Neighbours.m_lNodes.isEmpty())
{
return;
}
G2Packet* pKHL = G2Packet::New("KHL");
quint32 ts = time(0);
pKHL->WritePacket("TS", 4)->WriteIntLE(ts);
for(QList<CNeighbour*>::iterator itNode = Neighbours.begin(); itNode != Neighbours.end(); ++itNode)
{
CNeighbour* pNode = *itNode;
if( pNode->m_nProtocol != dpGnutella2 )
continue;
if(((CG2Node*)pNode)->m_nType == G2_HUB && pNode->m_nState == nsConnected)
{
pKHL->WritePacket("NH", 6)->WriteHostAddress(&pNode->m_oAddress);
}
}
quint32 nCount = 0;
for(; nCount < (quint32)quazaaSettings.Gnutella2.KHLHubCount && HostCache.size() > nCount; nCount++)
{
pKHL->WritePacket("CH", 10)->WriteHostAddress(&HostCache.m_lHosts.at(nCount)->m_oAddress);
pKHL->WriteIntLE(&HostCache.m_lHosts.at(nCount)->m_tTimestamp);
}
for(QList<CNeighbour*>::iterator itNode = Neighbours.begin(); itNode != Neighbours.end(); ++itNode)
{
CNeighbour* pNode = *itNode;
if( pNode->m_nProtocol != dpGnutella2 )
continue;
if(pNode->m_nState == nsConnected)
{
((CG2Node*)pNode)->SendPacket(pKHL, false, false);
}
}
pKHL->Release();
}
void CChatSessionG2::SendMessage(QString sMessage, bool bAction)
{
qDebug() << "Send message:" << sMessage << bAction;
G2Packet* pPacket = G2Packet::New("CMSG", true);
if( bAction )
pPacket->WritePacket("ACT", 0);
G2Packet* pBody = G2Packet::New("BODY");
pBody->WriteString(sMessage);
pPacket->WritePacket(pBody);
pBody->Release();
SendPacket(pPacket);
}
void CG2Node::OnQKR(G2Packet *pPacket)
{
if( !pPacket->m_bCompound || m_nType != G2_LEAF )
return;
char szType[9];
quint32 nLength = 0, nNext = 0;
bool bCacheOK = true;
IPv4_ENDPOINT addr;
while( pPacket->ReadPacket(&szType[0], nLength) )
{
nNext = pPacket->m_nPosition + nLength;
if( strcmp("QNA", szType) == 0 && nLength >= 6 )
{
pPacket->ReadHostAddress(&addr);
}
else if( strcmp("REF", szType) == 0 )
{
bCacheOK = false;
}
pPacket->m_nPosition = nNext;
}
if( addr.ip == 0 || addr.port == 0 ) // TODO: sprawdzene czy adres jest za fw
return;
CHostCacheHost* pHost = bCacheOK ? HostCache.Find(addr) : 0;
if( pHost != 0 && pHost->m_nQueryKey != 0 && pHost->m_nKeyHost == Network.m_oAddress.ip && time(0) - pHost->m_nKeyTime < quazaaSettings.Gnutella2.QueryKeyTime )
{
G2Packet* pQKA = G2Packet::New("QKA", true);
pQKA->WritePacket("QNA", 6)->WriteHostAddress(&addr);
pQKA->WritePacket("QK", 4)->WriteIntBE(pHost->m_nQueryKey);
pQKA->WritePacket("CACHED", 0);
SendPacket(pQKA, true, true);
}
else
{
G2Packet* pQKR = G2Packet::New("QKR", true);
pQKR->WritePacket("SNA", 6)->WriteHostAddress(&m_oAddress);
Datagrams.SendPacket(addr, pQKR, false);
pQKR->Release();
}
}
void CChatSessionG2::OnUPROC(G2Packet *pPacket)
{
Q_UNUSED(pPacket);
// Temporary code, needs to be moved to GProfile class
QString sXML = "<?xml version=\"1.0\"?><gprofile xmlns=\"http://www.shareaza.com/schemas/GProfile.xsd\"><gnutella guid=\"%1\"/><identity><handle primary=\"%2\"/></identity></gprofile>";
sXML = sXML.arg(quazaaSettings.Profile.GUID.toString().toUpper().replace("{", "").replace("}", "")).arg(quazaaSettings.Profile.GnutellaScreenName);
G2Packet* pD = G2Packet::New("UPROD", true);
pD->WritePacket("XML", sXML.toUtf8().size());
pD->WriteString(sXML);
SendPacket(pD);
}
void CG2Node::SendLNI()
{
G2Packet* pLNI = G2Packet::New("LNI", true);
pLNI->WritePacket("NA", 6)->WriteHostAddress(&Network.m_oAddress);
pLNI->WritePacket("GU", 16)->WriteGUID(quazaaSettings.Profile.GUID);
pLNI->WritePacket("V", 4)->WriteString(quazaaGlobals.VendorCode(), false);
if( Network.isHub() )
{
quint16 nLeafs = quazaaSettings.Gnutella2.NumLeafs;
pLNI->WritePacket("HS", 4);
pLNI->WriteIntLE(Network.m_nLeavesConnected);
pLNI->WriteIntLE(nLeafs);
pLNI->WritePacket("QK", 0);
}
pLNI->WritePacket("g2core", 0);
SendPacket(pLNI, false, true);
}
void CChatSessionG2::OnUPROD(G2Packet *pPacket)
{
qDebug() << "OnUPROD";
if( !pPacket->m_bCompound )
return;
QUuid oGUID;
bool hasXML = false;
char szType[9];
quint32 nLength = 0, nNext = 0;
while(pPacket->ReadPacket(&szType[0], nLength))
{
nNext = pPacket->m_nPosition + nLength;
if(strcmp("XML", szType) == 0)
{
// Temporary code, needs to be moved to GProfile class
QXmlStreamReader oXML;
bool hasGprofile = false;
bool hasGUID = false;
bool hasIdentity = false;
bool hasNick = false;
oXML.addData(pPacket->ReadString(nLength));
while(!oXML.atEnd() && !oXML.hasError())
{
QXmlStreamReader::TokenType token = oXML.readNext();
if( token == QXmlStreamReader::StartDocument)
{
continue;
}
else if( token == QXmlStreamReader::StartElement )
{
if( oXML.name() == "gprofile" )
{
/*
if( oXML.attributes().value("xmlns") != "http://www.shareaza.com/schemas/GProfile.xsd" )
return;*/
hasGprofile = true;
continue;
}
else if( hasGprofile && oXML.name() == "gnutella" )
{
if( oXML.attributes().hasAttribute("guid") )
{
QString sTemp = oXML.attributes().value("guid").toString();
QUuid oTemp(sTemp);
oGUID = oTemp;
hasGUID = true;
continue;
}
}
else if( hasGprofile && oXML.name() == "identity" )
{
hasIdentity = true;
continue;
}
else if( hasGprofile && hasIdentity && oXML.name() == "handle" )
{
if( oXML.attributes().hasAttribute("primary") )
{
m_sNick = oXML.attributes().value("primary").toString();
hasNick = true;
continue;
}
}
}
}
if( !hasNick || !hasGUID )
return;
hasXML = true;
}
pPacket->m_nPosition = nNext;
}
if( !hasXML )
return;
m_oGUID = oGUID;
emit guidChanged(oGUID);
emit nickChanged(m_sNick);
if( m_bInitiated ) // TODO PUSH handling
{
G2Packet* pReq = G2Packet::New("CHATREQ", true);
pReq->WritePacket("USERGUID", 16);
pReq->WriteGUID(m_oGUID);
SendPacket(pReq);
}
}
void CG2Node::OnPing(G2Packet* pPacket)
{
bool bUdp = false;
bool bRelay = false;
bool bTestFirewall = false;
IPv4_ENDPOINT addr;
if( pPacket->m_bCompound )
{
char szType[9];
quint32 nLength = 0, nNext = 0;
while( pPacket->ReadPacket(&szType[0], nLength) )
{
nNext = pPacket->m_nPosition + nLength;
if( strcmp("UDP", szType) == 0 && nLength >= 6)
{
pPacket->ReadHostAddress(&addr);
if( addr.ip != 0 && addr.port != 0)
bUdp = true;
}
else if( strcmp("RELAY", szType) == 0 )
{
bRelay = true;
}
else if( strcmp("TFW", szType) == 0 )
{
bTestFirewall = true;
}
pPacket->m_nPosition = nNext;
}
}
if( !bUdp && !bRelay )
{
// direct ping
G2Packet* pPong = G2Packet::New("PO", false);
SendPacket(pPong, false, true);
return;
}
if( bUdp && !bRelay )
{
// /PI/UDP
if( Network.isHub() )
{
char* pRelay = pPacket->WriteGetPointer(7, 0);
*pRelay++ = 0x60;
*pRelay++ = 0;
*pRelay++ = 'R'; *pRelay++ = 'E'; *pRelay++ = 'L';
*pRelay++ = 'A'; *pRelay++ = 'Y';
QList<CG2Node*> lToRelay;
for( int i = 0; i < Network.m_lNodes.size(); i++ )
{
if( Network.m_lNodes.at(i)->m_nState == nsConnected )
lToRelay.append(Network.m_lNodes[i]);
}
for( int nCount = 0; nCount < quazaaSettings.Gnutella2.PingRelayLimit && lToRelay.size(); nCount++ )
{
int nIndex = qrand() % lToRelay.size();
pPacket->AddRef();
CG2Node* pNode = lToRelay.at(nIndex);
pNode->SendPacket(pPacket, true, true);
lToRelay.removeAt(nIndex);
}
return;
}
}
if( bUdp && bRelay )
{
G2Packet* pPong = G2Packet::New("PO", true);
pPong->WritePacket("RELAY", 0);
Datagrams.SendPacket(addr, pPong, true);
pPong->Release();
}
}
