#ifndef SQL_ACL_INCLUDED
#define SQL_ACL_INCLUDED

/* Copyright (c) 2000, 2016, Oracle and/or its affiliates. All rights reserved.

   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,
   as published by the Free Software Foundation.

   This program is also distributed with certain software (including
   but not limited to OpenSSL) that is licensed under separate terms,
   as designated in a particular file or component or in included license
   documentation.  The authors of MySQL hereby grant you an additional
   permission to link the program and your derivative works with the
   separately licensed software that they have included with MySQL.

   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
   along with this program; if not, write to the Free Software Foundation,
   51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */

#include "my_global.h"                          /* NO_EMBEDDED_ACCESS_CHECKS */
#include "violite.h"                            /* SSL_type */
#include "sql_class.h"                          /* LEX_COLUMN */

#define SELECT_ACL	(1L << 0)
#define INSERT_ACL	(1L << 1)
#define UPDATE_ACL	(1L << 2)
#define DELETE_ACL	(1L << 3)
#define CREATE_ACL	(1L << 4)
#define DROP_ACL	(1L << 5)
#define RELOAD_ACL	(1L << 6)
#define SHUTDOWN_ACL	(1L << 7)
#define PROCESS_ACL	(1L << 8)
#define FILE_ACL	(1L << 9)
#define GRANT_ACL	(1L << 10)
#define REFERENCES_ACL	(1L << 11)
#define INDEX_ACL	(1L << 12)
#define ALTER_ACL	(1L << 13)
#define SHOW_DB_ACL	(1L << 14)
#define SUPER_ACL	(1L << 15)
#define CREATE_TMP_ACL	(1L << 16)
#define LOCK_TABLES_ACL	(1L << 17)
#define EXECUTE_ACL	(1L << 18)
#define REPL_SLAVE_ACL	(1L << 19)
#define REPL_CLIENT_ACL	(1L << 20)
#define CREATE_VIEW_ACL	(1L << 21)
#define SHOW_VIEW_ACL	(1L << 22)
#define CREATE_PROC_ACL	(1L << 23)
#define ALTER_PROC_ACL  (1L << 24)
#define CREATE_USER_ACL (1L << 25)
#define EVENT_ACL       (1L << 26)
#define TRIGGER_ACL     (1L << 27)
#define CREATE_TABLESPACE_ACL (1L << 28)
/*
  don't forget to update
  1. static struct show_privileges_st sys_privileges[]
  2. static const char *command_array[] and static uint command_lengths[]
  3. mysql_system_tables.sql and mysql_system_tables_fix.sql
  4. acl_init() or whatever - to define behaviour for old privilege tables
  5. sql_yacc.yy - for GRANT/REVOKE to work
*/
#define NO_ACCESS	(1L << 30)
#define DB_ACLS \
(UPDATE_ACL | SELECT_ACL | INSERT_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
 GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL | CREATE_TMP_ACL | \
 LOCK_TABLES_ACL | EXECUTE_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL | \
 CREATE_PROC_ACL | ALTER_PROC_ACL | EVENT_ACL | TRIGGER_ACL)

#define TABLE_ACLS \
(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
 GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL | CREATE_VIEW_ACL | \
 SHOW_VIEW_ACL | TRIGGER_ACL)

#define COL_ACLS \
(SELECT_ACL | INSERT_ACL | UPDATE_ACL | REFERENCES_ACL)

#define PROC_ACLS \
(ALTER_PROC_ACL | EXECUTE_ACL | GRANT_ACL)

#define SHOW_PROC_ACLS \
(ALTER_PROC_ACL | EXECUTE_ACL | CREATE_PROC_ACL)

#define GLOBAL_ACLS \
(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
 RELOAD_ACL | SHUTDOWN_ACL | PROCESS_ACL | FILE_ACL | GRANT_ACL | \
 REFERENCES_ACL | INDEX_ACL | ALTER_ACL | SHOW_DB_ACL | SUPER_ACL | \
 CREATE_TMP_ACL | LOCK_TABLES_ACL | REPL_SLAVE_ACL | REPL_CLIENT_ACL | \
 EXECUTE_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL | CREATE_PROC_ACL | \
 ALTER_PROC_ACL | CREATE_USER_ACL | EVENT_ACL | TRIGGER_ACL | \
 CREATE_TABLESPACE_ACL)

#define DEFAULT_CREATE_PROC_ACLS \
(ALTER_PROC_ACL | EXECUTE_ACL)

#define SHOW_CREATE_TABLE_ACLS \
(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | \
 CREATE_ACL | DROP_ACL | ALTER_ACL | INDEX_ACL | \
 TRIGGER_ACL | REFERENCES_ACL | GRANT_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL)

/**
  Table-level privileges which are automatically "granted" to everyone on
  existing temporary tables (CREATE_ACL is necessary for ALTER ... RENAME).
*/
#define TMP_TABLE_ACLS \
(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
 INDEX_ACL | ALTER_ACL)

/*
  Defines to change the above bits to how things are stored in tables
  This is needed as the 'host' and 'db' table is missing a few privileges
*/

/* Privileges that needs to be reallocated (in continous chunks) */
#define DB_CHUNK0 (SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | \
                   CREATE_ACL | DROP_ACL)
#define DB_CHUNK1 (GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL)
#define DB_CHUNK2 (CREATE_TMP_ACL | LOCK_TABLES_ACL)
#define DB_CHUNK3 (CREATE_VIEW_ACL | SHOW_VIEW_ACL | \
		   CREATE_PROC_ACL | ALTER_PROC_ACL )
#define DB_CHUNK4 (EXECUTE_ACL)
#define DB_CHUNK5 (EVENT_ACL | TRIGGER_ACL)

#define fix_rights_for_db(A)  (((A)       & DB_CHUNK0) | \
			      (((A) << 4) & DB_CHUNK1) | \
			      (((A) << 6) & DB_CHUNK2) | \
			      (((A) << 9) & DB_CHUNK3) | \
			      (((A) << 2) & DB_CHUNK4))| \
                              (((A) << 9) & DB_CHUNK5)
#define get_rights_for_db(A)  (((A) & DB_CHUNK0)       | \
			      (((A) & DB_CHUNK1) >> 4) | \
			      (((A) & DB_CHUNK2) >> 6) | \
			      (((A) & DB_CHUNK3) >> 9) | \
			      (((A) & DB_CHUNK4) >> 2))| \
                              (((A) & DB_CHUNK5) >> 9)
#define TBL_CHUNK0 DB_CHUNK0
#define TBL_CHUNK1 DB_CHUNK1
#define TBL_CHUNK2 (CREATE_VIEW_ACL | SHOW_VIEW_ACL)
#define TBL_CHUNK3 TRIGGER_ACL
#define fix_rights_for_table(A) (((A)        & TBL_CHUNK0) | \
                                (((A) <<  4) & TBL_CHUNK1) | \
                                (((A) << 11) & TBL_CHUNK2) | \
                                (((A) << 15) & TBL_CHUNK3))
#define get_rights_for_table(A) (((A) & TBL_CHUNK0)        | \
                                (((A) & TBL_CHUNK1) >>  4) | \
                                (((A) & TBL_CHUNK2) >> 11) | \
                                (((A) & TBL_CHUNK3) >> 15))
#define fix_rights_for_column(A) (((A) & 7) | (((A) & ~7) << 8))
#define get_rights_for_column(A) (((A) & 7) | ((A) >> 8))
#define fix_rights_for_procedure(A) ((((A) << 18) & EXECUTE_ACL) | \
				     (((A) << 23) & ALTER_PROC_ACL) | \
				     (((A) << 8) & GRANT_ACL))
#define get_rights_for_procedure(A) ((((A) & EXECUTE_ACL) >> 18) |  \
				     (((A) & ALTER_PROC_ACL) >> 23) | \
				     (((A) & GRANT_ACL) >> 8))

enum mysql_db_table_field
{
  MYSQL_DB_FIELD_HOST = 0,
  MYSQL_DB_FIELD_DB,
  MYSQL_DB_FIELD_USER,
  MYSQL_DB_FIELD_SELECT_PRIV,
  MYSQL_DB_FIELD_INSERT_PRIV,
  MYSQL_DB_FIELD_UPDATE_PRIV,
  MYSQL_DB_FIELD_DELETE_PRIV,
  MYSQL_DB_FIELD_CREATE_PRIV,
  MYSQL_DB_FIELD_DROP_PRIV,
  MYSQL_DB_FIELD_GRANT_PRIV,
  MYSQL_DB_FIELD_REFERENCES_PRIV,
  MYSQL_DB_FIELD_INDEX_PRIV,
  MYSQL_DB_FIELD_ALTER_PRIV,
  MYSQL_DB_FIELD_CREATE_TMP_TABLE_PRIV,
  MYSQL_DB_FIELD_LOCK_TABLES_PRIV,
  MYSQL_DB_FIELD_CREATE_VIEW_PRIV,
  MYSQL_DB_FIELD_SHOW_VIEW_PRIV,
  MYSQL_DB_FIELD_CREATE_ROUTINE_PRIV,
  MYSQL_DB_FIELD_ALTER_ROUTINE_PRIV,
  MYSQL_DB_FIELD_EXECUTE_PRIV,
  MYSQL_DB_FIELD_EVENT_PRIV,
  MYSQL_DB_FIELD_TRIGGER_PRIV,
  MYSQL_DB_FIELD_COUNT
};

enum mysql_user_table_field
{
  MYSQL_USER_FIELD_HOST= 0,
  MYSQL_USER_FIELD_USER,
  MYSQL_USER_FIELD_PASSWORD,
  MYSQL_USER_FIELD_SELECT_PRIV,
  MYSQL_USER_FIELD_INSERT_PRIV,
  MYSQL_USER_FIELD_UPDATE_PRIV,
  MYSQL_USER_FIELD_DELETE_PRIV,
  MYSQL_USER_FIELD_CREATE_PRIV,
  MYSQL_USER_FIELD_DROP_PRIV,
  MYSQL_USER_FIELD_RELOAD_PRIV,
  MYSQL_USER_FIELD_SHUTDOWN_PRIV,
  MYSQL_USER_FIELD_PROCESS_PRIV,
  MYSQL_USER_FIELD_FILE_PRIV,
  MYSQL_USER_FIELD_GRANT_PRIV,
  MYSQL_USER_FIELD_REFERENCES_PRIV,
  MYSQL_USER_FIELD_INDEX_PRIV,
  MYSQL_USER_FIELD_ALTER_PRIV,
  MYSQL_USER_FIELD_SHOW_DB_PRIV,
  MYSQL_USER_FIELD_SUPER_PRIV,
  MYSQL_USER_FIELD_CREATE_TMP_TABLE_PRIV,
  MYSQL_USER_FIELD_LOCK_TABLES_PRIV,
  MYSQL_USER_FIELD_EXECUTE_PRIV,
  MYSQL_USER_FIELD_REPL_SLAVE_PRIV,
  MYSQL_USER_FIELD_REPL_CLIENT_PRIV,
  MYSQL_USER_FIELD_CREATE_VIEW_PRIV,
  MYSQL_USER_FIELD_SHOW_VIEW_PRIV,
  MYSQL_USER_FIELD_CREATE_ROUTINE_PRIV,
  MYSQL_USER_FIELD_ALTER_ROUTINE_PRIV,
  MYSQL_USER_FIELD_CREATE_USER_PRIV,
  MYSQL_USER_FIELD_EVENT_PRIV,
  MYSQL_USER_FIELD_TRIGGER_PRIV,
  MYSQL_USER_FIELD_CREATE_TABLESPACE_PRIV,
  MYSQL_USER_FIELD_SSL_TYPE,
  MYSQL_USER_FIELD_SSL_CIPHER,
  MYSQL_USER_FIELD_X509_ISSUER,
  MYSQL_USER_FIELD_X509_SUBJECT,
  MYSQL_USER_FIELD_MAX_QUESTIONS,
  MYSQL_USER_FIELD_MAX_UPDATES,
  MYSQL_USER_FIELD_MAX_CONNECTIONS,
  MYSQL_USER_FIELD_MAX_USER_CONNECTIONS,
  MYSQL_USER_FIELD_PLUGIN,
  MYSQL_USER_FIELD_AUTHENTICATION_STRING,
  MYSQL_USER_FIELD_PASSWORD_EXPIRED,
  MYSQL_USER_FIELD_COUNT
};

enum mysql_proxies_priv_table_feild
{
  MYSQL_PROXIES_PRIV_FIELD_HOST = 0,
  MYSQL_PROXIES_PRIV_FIELD_USER,
  MYSQL_PROXIES_PRIV_FIELD_PROXIED_HOST,
  MYSQL_PROXIES_PRIV_FIELD_PROXIED_USER,
  MYSQL_PROXIES_PRIV_FIELD_WITH_GRANT,
  MYSQL_PROXIES_PRIV_FIELD_GRANTOR,
  MYSQL_PROXIES_PRIV_FIELD_TIMESTAMP,
  MYSQL_PROXIES_PRIV_FIELD_COUNT
};

enum mysql_procs_priv_table_field
{
  MYSQL_PROCS_PRIV_FIELD_HOST = 0,
  MYSQL_PROCS_PRIV_FIELD_DB,
  MYSQL_PROCS_PRIV_FIELD_USER,
  MYSQL_PROCS_PRIV_FIELD_ROUTINE_NAME,
  MYSQL_PROCS_PRIV_FIELD_ROUTINE_TYPE,
  MYSQL_PROCS_PRIV_FIELD_GRANTOR,
  MYSQL_PROCS_PRIV_FIELD_PROC_PRIV,
  MYSQL_PROCS_PRIV_FIELD_TIMESTAMP,
  MYSQL_PROCS_PRIV_FIELD_COUNT
};

enum mysql_columns_priv_table_field
{
  MYSQL_COLUMNS_PRIV_FIELD_HOST = 0,
  MYSQL_COLUMNS_PRIV_FIELD_DB,
  MYSQL_COLUMNS_PRIV_FIELD_USER,
  MYSQL_COLUMNS_PRIV_FIELD_TABLE_NAME,
  MYSQL_COLUMNS_PRIV_FIELD_COLUMN_NAME,
  MYSQL_COLUMNS_PRIV_FIELD_TIMESTAMP,
  MYSQL_COLUMNS_PRIV_FIELD_COLUMN_PRIV,
  MYSQL_COLUMNS_PRIV_FIELD_COUNT
};

enum mysql_tables_priv_table_field
{
  MYSQL_TABLES_PRIV_FIELD_HOST = 0,
  MYSQL_TABLES_PRIV_FIELD_DB,
  MYSQL_TABLES_PRIV_FIELD_USER,
  MYSQL_TABLES_PRIV_FIELD_TABLE_NAME,
  MYSQL_TABLES_PRIV_FIELD_GRANTOR,
  MYSQL_TABLES_PRIV_FIELD_TIMESTAMP,
  MYSQL_TABLES_PRIV_FIELD_TABLE_PRIV,
  MYSQL_TABLES_PRIV_FIELD_COLUMN_PRIV,
  MYSQL_TABLES_PRIV_FIELD_COUNT
};

extern const TABLE_FIELD_DEF mysql_db_table_def;
extern bool mysql_user_table_is_in_short_password_format;
extern my_bool disconnect_on_expired_password;
extern const char *command_array[];
extern uint        command_lengths[];


/* prototypes */

bool hostname_requires_resolving(const char *hostname);
void append_user(THD *thd, String *str, LEX_USER *user, bool comma,
                 bool passwd);
my_bool  acl_init(bool dont_read_acl_tables);
my_bool acl_reload(THD *thd);
void acl_free(bool end=0);
ulong acl_get(const char *host, const char *ip,
	      const char *user, const char *db, my_bool db_is_pattern);
int acl_authenticate(THD *thd, uint com_change_user_pkt_len);
bool acl_getroot(Security_context *sctx, char *user, char *host,
                 char *ip, char *db);
bool acl_check_host(const char *host, const char *ip);
int check_change_password(THD *thd, const char *host, const char *user,
                           char *password, uint password_len);
bool change_password(THD *thd, const char *host, const char *user,
		     char *password);
bool mysql_grant(THD *thd, const char *db, List <LEX_USER> &user_list,
                 ulong rights, bool revoke, bool is_proxy);
int mysql_table_grant(THD *thd, TABLE_LIST *table, List <LEX_USER> &user_list,
                       List <LEX_COLUMN> &column_list, ulong rights,
                       bool revoke);
bool mysql_routine_grant(THD *thd, TABLE_LIST *table, bool is_proc,
			 List <LEX_USER> &user_list, ulong rights,
			 bool revoke, bool write_to_binlog);
my_bool grant_init();
void grant_free(void);
my_bool grant_reload(THD *thd);
bool check_grant(THD *thd, ulong want_access, TABLE_LIST *tables,
                 bool any_combination_will_do, uint number, bool no_errors);
bool check_grant_column (THD *thd, GRANT_INFO *grant,
			 const char *db_name, const char *table_name,
			 const char *name, uint length, Security_context *sctx);
bool check_column_grant_in_table_ref(THD *thd, TABLE_LIST * table_ref,
                                     const char *name, uint length);
bool check_grant_all_columns(THD *thd, ulong want_access, 
                             Field_iterator_table_ref *fields);
bool check_grant_routine(THD *thd, ulong want_access,
			 TABLE_LIST *procs, bool is_proc, bool no_error);
bool check_grant_db(THD *thd,const char *db);
ulong get_table_grant(THD *thd, TABLE_LIST *table);
ulong get_column_grant(THD *thd, GRANT_INFO *grant,
                       const char *db_name, const char *table_name,
                       const char *field_name);
bool mysql_show_grants(THD *thd, LEX_USER *user);
void get_privilege_desc(char *to, uint max_length, ulong access);
void get_mqh(const char *user, const char *host, USER_CONN *uc);
bool mysql_create_user(THD *thd, List <LEX_USER> &list);
bool mysql_drop_user(THD *thd, List <LEX_USER> &list);
bool mysql_rename_user(THD *thd, List <LEX_USER> &list);
bool mysql_user_password_expire(THD *thd, List <LEX_USER> &list);
bool mysql_revoke_all(THD *thd, List <LEX_USER> &list);
void fill_effective_table_privileges(THD *thd, GRANT_INFO *grant,
                                     const char *db, const char *table);
bool sp_revoke_privileges(THD *thd, const char *sp_db, const char *sp_name,
                          bool is_proc);
bool sp_grant_privileges(THD *thd, const char *sp_db, const char *sp_name,
                         bool is_proc);
bool check_routine_level_acl(THD *thd, const char *db, const char *name,
                             bool is_proc);
bool is_acl_user(const char *host, const char *user);
int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, Item *cond);
int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, Item *cond);
int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, Item *cond);
int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, Item *cond);
int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *wildstr);
int digest_password(THD *thd, LEX_USER *user_record);
int check_password_strength(String *password);
int check_password_policy(String *password);
#ifdef NO_EMBEDDED_ACCESS_CHECKS
#define check_grant(A,B,C,D,E,F) 0
#define check_grant_db(A,B) 0
#endif
void close_acl_tables(THD *thd);

/**
  Result of an access check for an internal schema or table.
  Internal ACL checks are always performed *before* using
  the grant tables.
  This mechanism enforces that the server implementation has full
  control on its internal tables.
  Depending on the internal check result, the server implementation
  can choose to:
  - always allow access,
  - always deny access,
  - delegate the decision to the database administrator,
  by using the grant tables.
*/
enum ACL_internal_access_result
{
  /**
    Access granted for all the requested privileges,
    do not use the grant tables.
    This flag is used only for the INFORMATION_SCHEMA privileges,
    for compatibility reasons.
  */
  ACL_INTERNAL_ACCESS_GRANTED,
  /** Access denied, do not use the grant tables. */
  ACL_INTERNAL_ACCESS_DENIED,
  /** No decision yet, use the grant tables. */
  ACL_INTERNAL_ACCESS_CHECK_GRANT
};

/**
  Per internal table ACL access rules.
  This class is an interface.
  Per table(s) specific access rule should be implemented in a subclass.
  @sa ACL_internal_schema_access
*/
class ACL_internal_table_access
{
public:
  ACL_internal_table_access()
  {}

  virtual ~ACL_internal_table_access()
  {}

  /**
    Check access to an internal table.
    When a privilege is granted, this method add the requested privilege
    to save_priv.
    @param want_access the privileges requested
    @param [in, out] save_priv the privileges granted
    @return
      @retval ACL_INTERNAL_ACCESS_GRANTED All the requested privileges
      are granted, and saved in save_priv.
      @retval ACL_INTERNAL_ACCESS_DENIED At least one of the requested
      privileges was denied.
      @retval ACL_INTERNAL_ACCESS_CHECK_GRANT No requested privilege
      was denied, and grant should be checked for at least one
      privilege. Requested privileges that are granted, if any, are saved
      in save_priv.
  */
  virtual ACL_internal_access_result check(ulong want_access,
                                           ulong *save_priv) const= 0;
};

/**
  Per internal schema ACL access rules.
  This class is an interface.
  Each per schema specific access rule should be implemented
  in a different subclass, and registered.
  Per schema access rules can control:
  - every schema privileges on schema.*
  - every table privileges on schema.table
  @sa ACL_internal_schema_registry
*/
class ACL_internal_schema_access
{
public:
  ACL_internal_schema_access()
  {}

  virtual ~ACL_internal_schema_access()
  {}

  /**
    Check access to an internal schema.
    @param want_access the privileges requested
    @param [in, out] save_priv the privileges granted
    @return
      @retval ACL_INTERNAL_ACCESS_GRANTED All the requested privileges
      are granted, and saved in save_priv.
      @retval ACL_INTERNAL_ACCESS_DENIED At least one of the requested
      privileges was denied.
      @retval ACL_INTERNAL_ACCESS_CHECK_GRANT No requested privilege
      was denied, and grant should be checked for at least one
      privilege. Requested privileges that are granted, if any, are saved
      in save_priv.
  */
  virtual ACL_internal_access_result check(ulong want_access,
                                           ulong *save_priv) const= 0;

  /**
    Search for per table ACL access rules by table name.
    @param name the table name
    @return per table access rules, or NULL
  */
  virtual const ACL_internal_table_access *lookup(const char *name) const= 0;
};

/**
  A registry for per internal schema ACL.
  An 'internal schema' is a database schema maintained by the
  server implementation, such as 'performance_schema' and 'INFORMATION_SCHEMA'.
*/
class ACL_internal_schema_registry
{
public:
  static void register_schema(const LEX_STRING *name,
                              const ACL_internal_schema_access *access);
  static const ACL_internal_schema_access *lookup(const char *name);
};

const ACL_internal_schema_access *
get_cached_schema_access(GRANT_INTERNAL_INFO *grant_internal_info,
                         const char *schema_name);

const ACL_internal_table_access *
get_cached_table_access(GRANT_INTERNAL_INFO *grant_internal_info,
                        const char *schema_name,
                        const char *table_name);

bool acl_check_proxy_grant_access (THD *thd, const char *host, const char *user,
                                   bool with_grant);

void init_default_auth_plugin();
int set_default_auth_plugin(char *, int);

/** controls the extra checks on plugin availability for mysql.user records */
extern my_bool validate_user_plugins;

#endif /* SQL_ACL_INCLUDED */
