// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab

#pragma once

#include <cstdint>
#include <vector>
#include "include/buffer_fwd.h"

class AuthConnectionMeta;
class Connection;
class CryptoKey;

class AuthClient {
public:
  virtual ~AuthClient() {}

  /// Build an authentication request to begin the handshake
  virtual int get_auth_request(
    Connection *con,
    AuthConnectionMeta *auth_meta,
    uint32_t *method,
    std::vector<uint32_t> *preferred_modes,
    ceph::buffer::list *out) = 0;

  /// Handle server's request to continue the handshake
  virtual int handle_auth_reply_more(
    Connection *con,
    AuthConnectionMeta *auth_meta,
    const ceph::buffer::list& bl,
    ceph::buffer::list *reply) = 0;

  /// Handle server's indication that authentication succeeded
  virtual int handle_auth_done(
    Connection *con,
    AuthConnectionMeta *auth_meta,
    uint64_t global_id,
    uint32_t con_mode,
    const ceph::buffer::list& bl,
    CryptoKey *session_key,
    std::string *connection_secret) = 0;

  /// Handle server's indication that the previous auth attempt failed
  virtual int handle_auth_bad_method(
    Connection *con,
    AuthConnectionMeta *auth_meta,
    uint32_t old_auth_method,
    int result,
    const std::vector<uint32_t>& allowed_methods,
    const std::vector<uint32_t>& allowed_modes) = 0;
};