UInt8 Handshake::handshakeHandler(UInt8 id,PacketReader& request,PacketWriter& response) { switch(id){ case 0x30: { request.read8(); // passer un caractere (boite dans boite) UInt8 epdLen = request.read8()-1; UInt8 type = request.read8(); string epd; request.readRaw(epdLen,epd); string tag; request.readRaw(16,tag); response.writeString8(tag); if(type == 0x0f) return _gateway.p2pHandshake(tag,response,peer.address,(const UInt8*)epd.c_str()); if(type == 0x0a){ /// Handshake HelloAttempt& attempt = helloAttempt<HelloAttempt>(tag); if(edges().size()>0 && (_invoker.edgesAttemptsBeforeFallback==0 || attempt.count <_invoker.edgesAttemptsBeforeFallback)) { if(_invoker.edgesAttemptsBeforeFallback>0) { try { URI uri(epd); response.writeAddress(SocketAddress(uri.getHost(),uri.getPort()),false); // TODO check with true! } catch(Exception& ex) { ERROR("Parsing %s URL problem in hello attempt : %s",epd.c_str(),ex.displayText().c_str()); } } map<int,list<Edge*> > edgesSortedByCount; map<string,Edge*>::const_iterator it; for(it=edges().begin();it!=edges().end();++it) edgesSortedByCount[it->second->count].push_back(it->second); UInt8 count=0; map<int,list<Edge*> >::const_iterator it2; for(it2=edgesSortedByCount.begin();it2!=edgesSortedByCount.end();++it2) { list<Edge*>::const_iterator it3; for(it3=it2->second.begin();it3!=it2->second.end();++it3) { response.writeAddress((*it3)->address,false); if((++count)==6) // 6 redirections maximum break; } if(it3!=it2->second.end()) break; } return 0x71; } if(edges().size()>0) WARN("After %u hello attempts, impossible to connect to edges. Edges are busy? or unreachable?",_invoker.edgesAttemptsBeforeFallback); // New Cookie createCookie(response,attempt,tag,epd); // instance id (certificat in the middle) response.writeRaw(_certificat,sizeof(_certificat)); return 0x70; } else ERROR("Unkown handshake first way with '%02x' type",type); break; } case 0x39: case 0x38: { (UInt32&)farId = request.read32(); if(request.read7BitLongValue()!=COOKIE_SIZE) { ERROR("Bad handshake cookie '%s': its size should be 64 bytes",Util::FormatHex(request.current(),COOKIE_SIZE).c_str()); return 0; } map<const UInt8*,Cookie*,CompareCookies>::iterator itCookie = _cookies.find(request.current()); if(itCookie==_cookies.end()) { if(id!=0x39) { ERROR("Handshake cookie '%s' unknown",Util::FormatHex(request.current(),COOKIE_SIZE).c_str()); return 0; } Cookie* pCookie = new Cookie(); UInt32 pos = request.position(); request.readRaw((UInt8*)pCookie->value,COOKIE_SIZE); request >> (string&)pCookie->queryUrl; request.reset(pos); itCookie = _cookies.insert(pair<const UInt8*,Cookie*>(pCookie->value,pCookie)).first; } Cookie& cookie(*itCookie->second); if(cookie.id==0) { UInt8 decryptKey[AES_KEY_SIZE];UInt8* pDecryptKey=&decryptKey[0]; UInt8 encryptKey[AES_KEY_SIZE];UInt8* pEncryptKey=&encryptKey[0]; if(id==0x38) { request.next(COOKIE_SIZE); size_t size = (size_t)request.read7BitLongValue(); // peerId = SHA256(farPubKey) EVP_Digest(request.current(),size,(UInt8*)peer.id,NULL,EVP_sha256(),NULL); vector<UInt8> publicKey(request.read7BitValue()-2); request.next(2); // unknown request.readRaw(&publicKey[0],publicKey.size()); size = request.read7BitValue(); cookie.computeKeys(&publicKey[0],publicKey.size(),request.current(),(UInt16)size,decryptKey,encryptKey); } else { // edge pDecryptKey=NULL; pEncryptKey=NULL; memcpy((UInt8*)peer.id,request.current(),ID_SIZE); request.next(COOKIE_SIZE); request.next(request.read7BitEncoded()); } // Fill peer infos Util::UnpackUrl(cookie.queryUrl,(string&)peer.path,(map<string,string>&)peer.properties); // RESPONSE Session& session = _gateway.createSession(farId,peer,pDecryptKey,pEncryptKey,cookie); (UInt32&)cookie.id = session.id; string address; if(id==0x39) { // Session by edge session.flags |= SESSION_BY_EDGE; Edge* pEdge = _invoker.edges(peer.address); if(!pEdge) ERROR("Edge session creation by an unknown server edge %s",peer.address.toString().c_str()) else pEdge->addSession(session); request >> address; } else // Session direct address = session.peer.address.toString(); session.peer.addresses.clear(); session.peer.addresses.push_back(address); cookie.write(); } else