예제 #1
0
void NetInterface::handleConnectChallengeResponse(const Address &address, BitStream *stream)
{
   NetConnection *conn = findPendingConnection(address);
   if(!conn || conn->getConnectionState() != NetConnection::AwaitingChallengeResponse)
      return;
   
   Nonce theNonce;
   theNonce.read(stream);

   ConnectionParameters &theParams = conn->getConnectionParameters();
   if(theNonce != theParams.mNonce)
      return;

   stream->read(&theParams.mClientIdentity);

   // see if the server wants us to solve a client puzzle
   theParams.mServerNonce.read(stream);
   stream->read(&theParams.mPuzzleDifficulty);

   if(theParams.mPuzzleDifficulty > ClientPuzzleManager::MaxPuzzleDifficulty)
      return;

   // see if the connection needs to be authenticated or uses key exchange
   if(stream->readFlag())
   {
      if(stream->readFlag())
      {
         theParams.mCertificate = new Certificate(stream);
         if(!theParams.mCertificate->isValid() || !conn->validateCertficate(theParams.mCertificate, true))
            return;         
         theParams.mPublicKey = theParams.mCertificate->getPublicKey();
      }
      else
      {
         theParams.mPublicKey = new AsymmetricKey(stream);
         if(!theParams.mPublicKey->isValid() || !conn->validatePublicKey(theParams.mPublicKey, true))
            return;
      }
      if(mPrivateKey.isNull() || mPrivateKey->getKeySize() != theParams.mPublicKey->getKeySize())
      {
         // we don't have a private key, so generate one for this connection
         theParams.mPrivateKey = new AsymmetricKey(theParams.mPublicKey->getKeySize());
      }
      else
         theParams.mPrivateKey = mPrivateKey;
      theParams.mSharedSecret = theParams.mPrivateKey->computeSharedSecretKey(theParams.mPublicKey);
      //logprintf("shared secret (client) %s", theParams.mSharedSecret->encodeBase64()->getBuffer());
      Random::read(theParams.mSymmetricKey, SymmetricCipher::KeySize);
      theParams.mUsingCrypto = true;
   }

   TNLLogMessageV(LogNetInterface, ("Received Challenge Response: %8x", theParams.mClientIdentity ));

   conn->setConnectionState(NetConnection::ComputingPuzzleSolution);
   conn->mConnectSendCount = 0;

   theParams.mPuzzleSolution = 0;
   conn->mConnectLastSendTime = getCurrentTime();
   continuePuzzleSolution(conn);   
}
예제 #2
0
void NetInterface::handleConnectReject(const NetAddress *address, BitStream *stream)
{
   U32 connectSequence;
   stream->read(&connectSequence);
   NetConnection *conn = findPendingConnection(address, connectSequence);
   if(!conn || (conn->getConnectionState() != NetConnection::AwaitingChallengeResponse &&
                conn->getConnectionState() != NetConnection::AwaitingConnectResponse))
      return;
   removePendingConnection(conn);
   char reason[256];
   stream->readString(reason);
   conn->onConnectionRejected(reason);
   conn->deleteObject();
}
void NetInterface::handleConnectAccept(const Address &address, BitStream *stream)
{
   Nonce nonce, serverNonce;

   nonce.read(stream);
   serverNonce.read(stream);

   U32 decryptPos = stream->getBytePosition();
   stream->setBytePosition(decryptPos);

   // Make sure we're actually waiting for a connection.  If not, then there's something wrong, and we bail.
   NetConnection *conn = findPendingConnection(address);
   if(!conn || conn->getConnectionState() != NetConnection::AwaitingConnectResponse)
      return;

   ConnectionParameters &theParams = conn->getConnectionParameters();

   if(theParams.mNonce != nonce || theParams.mServerNonce != serverNonce)
      return;

   if(theParams.mUsingCrypto)
   {
      SymmetricCipher theCipher(theParams.mSharedSecret);
      if(!stream->decryptAndCheckHash(NetConnection::MessageSignatureBytes, decryptPos, &theCipher))
         return;
   }
   U32 recvSequence;
   stream->read(&recvSequence);
   conn->setInitialRecvSequence(recvSequence);

   NetConnection::TerminationReason reason;
   if(!conn->readConnectAccept(stream, reason))
   {
      removePendingConnection(conn);
      return;
   }

   if(theParams.mUsingCrypto)
   {
      stream->read(SymmetricCipher::KeySize, theParams.mInitVector);
      conn->setSymmetricCipher(new SymmetricCipher(theParams.mSymmetricKey, theParams.mInitVector));
   }

   addConnection(conn);           // First, add it as a regular connection,
   removePendingConnection(conn); // then remove it from the pending connection list

   conn->setConnectionState(NetConnection::Connected);
   conn->onConnectionEstablished(); // notify the connection that it has been established
   logprintf(LogConsumer::LogNetInterface, "Received Connect Accept - connection established.");
}
예제 #4
0
void NetInterface::handleConnectAccept(const Address &address, BitStream *stream)
{
   Nonce nonce, serverNonce;

   nonce.read(stream);
   serverNonce.read(stream);
   U32 decryptPos = stream->getBytePosition();
   stream->setBytePosition(decryptPos);

   NetConnection *conn = findPendingConnection(address);
   if(!conn || conn->getConnectionState() != NetConnection::AwaitingConnectResponse)
      return;

   ConnectionParameters &theParams = conn->getConnectionParameters();

   if(theParams.mNonce != nonce || theParams.mServerNonce != serverNonce)
      return;

   if(theParams.mUsingCrypto)
   {
      SymmetricCipher theCipher(theParams.mSharedSecret);
      if(!stream->decryptAndCheckHash(NetConnection::MessageSignatureBytes, decryptPos, &theCipher))
         return;
   }
   U32 recvSequence;
   stream->read(&recvSequence);
   conn->setInitialRecvSequence(recvSequence);

   const char *errorString = NULL;
   if(!conn->readConnectAccept(stream, &errorString))
   {
      removePendingConnection(conn);
      return;
   }
   if(theParams.mUsingCrypto)
   {
      stream->read(SymmetricCipher::KeySize, theParams.mInitVector);
      conn->setSymmetricCipher(new SymmetricCipher(theParams.mSymmetricKey, theParams.mInitVector));
   }

   addConnection(conn); // first, add it as a regular connection
   removePendingConnection(conn); // remove from the pending connection list

   conn->setConnectionState(NetConnection::Connected);
   conn->onConnectionEstablished(); // notify the connection that it has been established
   TNLLogMessageV(LogNetInterface, ("Received Connect Accept - connection established."));
}
예제 #5
0
void NetInterface::handleConnectAccept(const NetAddress *address, BitStream *stream)
{
   U32 connectSequence;
   stream->read(&connectSequence);
   NetConnection *conn = findPendingConnection(address, connectSequence);
   if(!conn || conn->getConnectionState() != NetConnection::AwaitingConnectResponse)
      return;
   const char *errorString = NULL;
   if(!conn->readConnectAccept(stream, &errorString))
   {
      conn->handleStartupError(errorString);
      removePendingConnection(conn);
      conn->deleteObject();
      return;
   }

   removePendingConnection(conn); // remove from the pending connection list
   conn->setNetworkConnection(true);
   conn->onConnectionEstablished(true); // notify the connection that it has been established
   conn->setEstablished(); // installs the connection in the connection table, and causes pings/timeouts to happen
   conn->setConnectSequence(connectSequence);
}
예제 #6
0
void NetInterface::handleConnectChallengeResponse(const NetAddress *address, BitStream *stream)
{
   Con::printf("Got Connect challenge Response");
   U32 connectSequence;
   stream->read(&connectSequence);

   NetConnection *conn = findPendingConnection(address, connectSequence);
   if(!conn || conn->getConnectionState() != NetConnection::AwaitingChallengeResponse)
      return;

   U32 addressDigest[4];
   stream->read(&addressDigest[0]);
   stream->read(&addressDigest[1]);
   stream->read(&addressDigest[2]);
   stream->read(&addressDigest[3]);
   conn->setAddressDigest(addressDigest);

   conn->setConnectionState(NetConnection::AwaitingConnectResponse);
   conn->mConnectSendCount = 0;
   Con::printf("Sending Connect Request");
   sendConnectRequest(conn);
}
void NetInterface::handleConnectReject(const Address &address, BitStream *stream)
{
   Nonce nonce;
   Nonce serverNonce;

   nonce.read(stream);
   serverNonce.read(stream);

   NetConnection *conn = findPendingConnection(address);
   if(!conn || (conn->getConnectionState() != NetConnection::AwaitingChallengeResponse &&
                conn->getConnectionState() != NetConnection::AwaitingConnectResponse))
      return;
   ConnectionParameters &p = conn->getConnectionParameters();
   if(p.mNonce != nonce || p.mServerNonce != serverNonce)
      return;


   NetConnection::TerminationReason reason = (NetConnection::TerminationReason) stream->readEnum(NetConnection::TerminationReasons);

   char reasonStr[256];
   stream->readString(reasonStr);

   logprintf(LogConsumer::LogNetInterface, "Received Connect Reject - reason code %d (%s)", reason, reasonStr);

   // If the reason is a bad puzzle solution, try once more with a new nonce
   if(reason == NetConnection::ReasonPuzzle && !p.mPuzzleRetried)
   {
      p.mPuzzleRetried = true;
      conn->setConnectionState(NetConnection::AwaitingChallengeResponse);
      conn->mConnectSendCount = 0;
      p.mNonce.getRandom();                  // Generate new nonce
      sendConnectChallengeRequest(conn);
      return;
   }

   conn->setConnectionState(NetConnection::ConnectRejected);
   conn->onConnectTerminated(reason, reasonStr);
   removePendingConnection(conn);
}
예제 #8
0
void NetInterface::handleConnectReject(const Address &address, BitStream *stream)
{
   Nonce nonce;
   Nonce serverNonce;

   nonce.read(stream);
   serverNonce.read(stream);

   NetConnection *conn = findPendingConnection(address);
   if(!conn || (conn->getConnectionState() != NetConnection::AwaitingChallengeResponse &&
                conn->getConnectionState() != NetConnection::AwaitingConnectResponse))
      return;
   ConnectionParameters &p = conn->getConnectionParameters();
   if(p.mNonce != nonce || p.mServerNonce != serverNonce)
      return;

   char reason[256];
   stream->readString(reason);

   TNLLogMessageV(LogNetInterface, ("Received Connect Reject - reason %s", reason));
   // if the reason is a bad puzzle solution, try once more with a
   // new nonce.
   if(!strcmp(reason, "Puzzle") && !p.mPuzzleRetried)
   {
      p.mPuzzleRetried = true;
      conn->setConnectionState(NetConnection::AwaitingChallengeResponse);
      conn->mConnectSendCount = 0;
      p.mNonce.getRandom();
      sendConnectChallengeRequest(conn);
      return;
   }

   conn->setConnectionState(NetConnection::ConnectRejected);
   conn->onConnectTerminated(NetConnection::ReasonRemoteHostRejectedConnection, reason);
   removePendingConnection(conn);
}