TLSPlaintextPeekingCallback.h

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/*
 * Copyright 2017-present Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#pragma once

#include <wangle/acceptor/PeekingAcceptorHandshakeHelper.h>
#include <wangle/acceptor/SSLAcceptorHandshakeHelper.h>
#include <wangle/acceptor/UnencryptedAcceptorHandshakeHelper.h>

namespace wangle {

class TLSPlaintextPeekingCallback :
  public PeekingAcceptorHandshakeHelper::PeekCallback {
  enum { kPeekCount = 9 };
 public:
  TLSPlaintextPeekingCallback():
    PeekingAcceptorHandshakeHelper::PeekCallback(kPeekCount) {}

  AcceptorHandshakeHelper::UniquePtr getHelper(
      const std::vector<uint8_t>& bytes,
      const folly::SocketAddress& clientAddr,
      std::chrono::steady_clock::time_point acceptTime,
      TransportInfo& tinfo) override;

 private:
  static bool looksLikeTLS(const std::vector<uint8_t>& peekBytes);
};

}