C++ NetConnection::validatePublicKey方法代码示例

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);   
}

void NetInterface::handlePunch(const Address &theAddress, BitStream *stream)
{
   S32 i, j;
   NetConnection *conn;

   Nonce firstNonce;
   firstNonce.read(stream);

   ByteBuffer b(firstNonce.data, Nonce::NonceSize);

   TNLLogMessageV(LogNetInterface, ("Received punch packet from %s - %s", theAddress.toString(), b.encodeBase64()->getBuffer()));

   for(i = 0; i < mPendingConnections.size(); i++)
   {
      conn = mPendingConnections[i];
      ConnectionParameters &theParams = conn->getConnectionParameters();

      if(conn->getConnectionState() != NetConnection::SendingPunchPackets)
         continue;

      if((theParams.mIsInitiator && firstNonce != theParams.mServerNonce) ||
            (!theParams.mIsInitiator && firstNonce != theParams.mNonce))
         continue;

      // first see if the address is in the possible addresses list:
      
      for(j = 0; j < theParams.mPossibleAddresses.size(); j++)
         if(theAddress == theParams.mPossibleAddresses[j])
            break;

      // if there was an exact match, just exit the loop, or
      // continue on to the next pending if this is not an initiator:
      if(j != theParams.mPossibleAddresses.size())
      {
         if(theParams.mIsInitiator)
            break;
         else
            continue;
      }

      // if there was no exact match, we may have a funny NAT in the
      // middle.  But since a packet got through from the remote host
      // we'll want to send a punch to the address it came from, as long
      // as only the port is not an exact match:
      for(j = 0; j < theParams.mPossibleAddresses.size(); j++)
         if(theAddress.isEqualAddress(theParams.mPossibleAddresses[j]))
            break;

      // if the address wasn't even partially in the list, just exit out
      if(j == theParams.mPossibleAddresses.size())
         continue;

      // otherwise, as long as we don't have too many ping addresses,
      // add this one to the list:
      if(theParams.mPossibleAddresses.size() < 5)
         theParams.mPossibleAddresses.push_back(theAddress);      

      // if this is the initiator of the arranged connection, then
      // process the punch packet from the remote host by issueing a
      // connection request.
      if(theParams.mIsInitiator)
         break;
   }
   if(i == mPendingConnections.size())
      return;

   ConnectionParameters &theParams = conn->getConnectionParameters();
   SymmetricCipher theCipher(theParams.mArrangedSecret);
   if(!stream->decryptAndCheckHash(NetConnection::MessageSignatureBytes, stream->getBytePosition(), &theCipher))
      return;

   Nonce nextNonce;
   nextNonce.read(stream);

   if(nextNonce != theParams.mNonce)
      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;
//.........这里部分代码省略.........