socks4_mock_server.h

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/*
 * Copyright (C) Max Dymond, <cmeister2@gmail.com>, et al.
 *
 * SPDX-License-Identifier: curl
 */

 
#ifndef PROTO_FUZZER_SOCKS4_MOCK_SERVER_H_
#define PROTO_FUZZER_SOCKS4_MOCK_SERVER_H_
 
#include <cstddef>
#include <memory>
#include <string>
 
#include "proto_fuzzer/incoming_data_observer.h"
#include "proto_fuzzer/mock_server.h"
 
namespace proto_fuzzer {

class ProxyTransportMockServer final : public MockServer, public IncomingDataObserver {
 public:
  ProxyTransportMockServer(curl::fuzzer::proto::SocksProxyMode mode, bool haproxy_protocol);
  ~ProxyTransportMockServer() override = default;
 
  void ObserveState() override;
 
  ProxyTransportMockServer(const ProxyTransportMockServer&) = delete;
  ProxyTransportMockServer& operator=(const ProxyTransportMockServer&) = delete;
 
  void Install(CURL* easy) override;
 
  // Bounded raw client bytes from SOCKS negotiation through tunneled HTTP.
  // Tests use this to assert exact handshake and HAProxy prefix ordering.
  const std::string& client_transcript() const;
 
 protected:
  std::unique_ptr<MockConnection> CreateConnection() override;
 
  void ObserveIncomingData(const unsigned char* data, std::size_t size) override;
 
  bool SupportsRepeatedPollsetProbe() const override;
 
 private:
  static constexpr std::size_t kMaxTranscriptBytes = 64 * 1024;
 
  curl::fuzzer::proto::SocksProxyMode mode_;
  bool haproxy_protocol_;
  std::string client_transcript_;
};
 
}  // namespace proto_fuzzer
 
#endif  // PROTO_FUZZER_SOCKS4_MOCK_SERVER_H_