acl_change_notification.h

/* Copyright (c) 2019, 2025, Oracle and/or its affiliates.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
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This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License, version 2.0, for more details.

You should have received a copy of the GNU General Public License
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*/

#ifndef ACL_CHANGE_NOTIFICATION_INCLUDED
#define ACL_CHANGE_NOTIFICATION_INCLUDED

#include "my_sqlcommand.h"    // enum_sql_command
#include "sql/sql_rewrite.h"  // User_params
#include "sql/table.h"        // LEX_USER, LEX_CSTRING, List

class Acl_change_notification {
 public:
  struct Priv : public std::string {
    Priv(const LEX_CSTRING &lex_priv)
        : std::string{lex_priv.str, lex_priv.length} {}
  };
  struct User {
    std::string name;
    std::string host;
    User(const LEX_USER &lex_user)
        : name(lex_user.user.str, lex_user.user.length),
          host(lex_user.host.str, lex_user.host.length) {}
  };
  Acl_change_notification(THD *thd, enum_sql_command op,
                          const List<LEX_USER> *users,
                          std::set<LEX_USER *> *rewrite_params,
                          const List<LEX_CSTRING> *dynamic_privs);

 private:
  const std::string db;
  const enum_sql_command operation;
  const List<LEX_USER> empty_users;
  const List<LEX_USER> &users;
  const User_params rewrite_user_params;
  const List<LEX_CSTRING> empty_dynamic_privs;
  const List<LEX_CSTRING> &dynamic_privs;

 public:
  enum_sql_command get_operation() const { return operation; }
  const std::string &get_db() const { return db; }
  auto &get_user_list() const { return users; }
  auto &get_dynamic_privilege_list() const { return dynamic_privs; }
  const User_params *get_rewrite_params() const {
    if (rewrite_user_params.users == nullptr) return nullptr;
    return &rewrite_user_params;
  }
};

#endif