classic_auth_sha256_password.h

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/*
  Copyright (c) 2022, 2025, Oracle and/or its affiliates.
 
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  it under the terms of the GNU General Public License, version 2.0,
  as published by the Free Software Foundation.
 
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  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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*/
 
#ifndef ROUTING_CLASSIC_AUTH_SHA256_PASSWORD_INCLUDED
#define ROUTING_CLASSIC_AUTH_SHA256_PASSWORD_INCLUDED
 
#include <optional>
#include <string>
#include <string_view>
#include <system_error>
 
#include "classic_auth.h"
#include "classic_connection_base.h"
#include "mysql/harness/stdx/expected.h"
 
// low-level routings for sha256_password
class AuthSha256Password : public AuthBase {
 public:
  static constexpr const size_t kNonceLength{20};
  static constexpr const std::string_view kName{"sha256_password"};
 
  static constexpr const std::string_view kEmptyPassword{"\x00", 1};
  static constexpr const std::string_view kPublicKeyRequest{"\x01"};
 
  static std::optional<std::string> scramble(std::string_view nonce,
                                             std::string_view pwd);
 
  static stdx::expected<size_t, std::error_code> send_public_key_request(
      Channel &dst_channel, ClassicProtocolState &dst_protocol);
 
  static stdx::expected<size_t, std::error_code> send_public_key(
      Channel &dst_channel, ClassicProtocolState &dst_protocol,
      const std::string &public_key);
 
  static stdx::expected<size_t, std::error_code> send_plaintext_password(
      Channel &dst_channel, ClassicProtocolState &dst_protocol,
      const std::string &password);
 
  static stdx::expected<size_t, std::error_code> send_encrypted_password(
      Channel &dst_channel, ClassicProtocolState &dst_protocol,
      const std::string &password);
 
  static bool is_public_key_request(const std::string_view &data);
  static bool is_public_key(const std::string_view &data);
};
 
#endif