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Commit cdc0aec2 authored by unknown's avatar unknown
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Bug #31960 All embedded test crash 

Crash happens as a result of NO_EMBEDDED_ACCESS_CHECKS option
(which is default for embedded server).
check_table_access failed on using unintialized structure.
Better solutions here is to disable that code completely in this case.
Though the crash happens only in 6.0 i belive it's good to do it in 5.1


sql/mysql_priv.h:
  Bug #31960 All embedded test crash.
  
  Access check functions from sql_parse.cc defined as FALSE if
  NO_EMBEDDED_ACCESS_CHECKS
sql/sql_parse.cc:
  Bug #31960 All embedded test crash.
  
  Implementation of access checkings functions #ifdefed out for
  NO_EMBEDDED_ACCESS_CHECKS
parent b61146e1
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Showing with 38 additions and 18 deletions
sql/mysql_priv.h
View file @ cdc0aec2
......@@ -680,6 +680,8 @@ void free_items(Item *item);
void cleanup_items(Item *item);
class THD;
void close_thread_tables(THD *thd, bool locked=0, bool skip_derived=0);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
bool check_one_table_access(THD *thd, ulong privilege, TABLE_LIST *tables);
bool check_single_table_access(THD *thd, ulong privilege,
TABLE_LIST *tables, bool no_errors);
......@@ -688,6 +690,24 @@ bool check_routine_access(THD *thd,ulong want_access,char *db,char *name,
bool check_some_access(THD *thd, ulong want_access, TABLE_LIST *table);
bool check_merge_table_access(THD *thd, char *db, TABLE_LIST *table_list);
bool check_some_routine_access(THD *thd, const char *db, const char *name, bool is_proc);
#else
inline bool check_one_table_access(THD *thd, ulong privilege, TABLE_LIST *tables)
{ return false; }
inline bool check_single_table_access(THD *thd, ulong privilege,
TABLE_LIST *tables, bool no_errors)
{ return false; }
inline bool check_routine_access(THD *thd,ulong want_access,char *db,
char *name, bool is_proc, bool no_errors)
{ return false; }
inline bool check_some_access(THD *thd, ulong want_access, TABLE_LIST *table)
{ return false; }
inline bool check_merge_table_access(THD *thd, char *db, TABLE_LIST *table_list)
{ return false; }
inline bool check_some_routine_access(THD *thd, const char *db,
const char *name, bool is_proc)
{ return false; }
#endif /*NO_EMBEDDED_ACCESS_CHECKS*/
bool multi_update_precheck(THD *thd, TABLE_LIST *tables);
bool multi_delete_precheck(THD *thd, TABLE_LIST *tables);
bool mysql_multi_update_prepare(THD *thd);
......@@ -992,11 +1012,27 @@ void kill_mysql(void);
void close_connection(THD *thd, uint errcode, bool lock);
bool reload_acl_and_cache(THD *thd, ulong options, TABLE_LIST *tables,
bool *write_to_binlog);
#ifndef NO_EMBEDDED_ACCESS_CHECKS
bool check_access(THD *thd, ulong access, const char *db, ulong *save_priv,
bool no_grant, bool no_errors, bool schema_db);
bool check_table_access(THD *thd, ulong want_access, TABLE_LIST *tables,
bool no_errors);
bool check_global_access(THD *thd, ulong want_access);
#else
inline bool check_access(THD *thd, ulong access, const char *db,
ulong *save_priv, bool no_grant, bool no_errors,
bool schema_db)
{
if (save_priv)
*save_priv= GLOBAL_ACLS;
return false;
}
inline bool check_table_access(THD *thd, ulong want_access, TABLE_LIST *tables,
bool no_errors)
{ return false; }
inline bool check_global_access(THD *thd, ulong want_access)
{ return false; }
#endif /*NO_EMBEDDED_ACCESS_CHECKS*/
/*
Support routine for SQL parser on partitioning syntax
......
sql/sql_parse.cc
View file @ cdc0aec2
......@@ -3893,14 +3893,12 @@ mysql_execute_command(THD *thd)
thd->server_status|= SERVER_MORE_RESULTS_EXISTS;
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
if (check_routine_access(thd, EXECUTE_ACL,
sp->m_db.str, sp->m_name.str, TRUE, FALSE))
{
thd->net.no_send_ok= save_no_send_ok;
goto error;
}
#endif
select_limit= thd->variables.select_limit;
thd->variables.select_limit= HA_POS_ERROR;
......@@ -4580,6 +4578,7 @@ static bool execute_sqlcom_select(THD *thd, TABLE_LIST *all_tables)
}
#ifndef NO_EMBEDDED_ACCESS_CHECKS
/*
Check grants for commands which work only with one table.
......@@ -4697,7 +4696,6 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
bool dont_check_global_grants, bool no_errors, bool schema_db)
{
Security_context *sctx= thd->security_ctx;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
ulong db_access;
/*
GRANT command:
......@@ -4710,7 +4708,6 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
*/
bool db_is_pattern= (test(want_access & GRANT_ACL) &&
dont_check_global_grants);
#endif
ulong dummy;
DBUG_ENTER("check_access");
DBUG_PRINT("enter",("db: %s want_access: %lu master_access: %lu",
......@@ -4749,9 +4746,6 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
}
}
#ifdef NO_EMBEDDED_ACCESS_CHECKS
DBUG_RETURN(0);
#else
if ((sctx->master_access & want_access) == want_access)
{
/*
......@@ -4809,7 +4803,6 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
thd->db :
"unknown"))); /* purecov: tested */
DBUG_RETURN(TRUE); /* purecov: tested */
#endif /* NO_EMBEDDED_ACCESS_CHECKS */
}
......@@ -4834,16 +4827,12 @@ check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
bool check_global_access(THD *thd, ulong want_access)
{
#ifdef NO_EMBEDDED_ACCESS_CHECKS
return 0;
#else
char command[128];
if ((thd->security_ctx->master_access & want_access))
return 0;
get_privilege_desc(command, sizeof(command), want_access);
my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), command);
return 1;
#endif /* NO_EMBEDDED_ACCESS_CHECKS */
}
......@@ -4933,9 +4922,7 @@ bool
check_table_access(THD *thd, ulong want_access,TABLE_LIST *tables,
bool no_errors)
{
#ifndef NO_EMBEDDED_ACCESS_CHECKS
TABLE_LIST *org_tables= tables;
#endif
TABLE_LIST *first_not_own_table= thd->lex->first_not_own_table();
Security_context *sctx= thd->security_ctx, *backup_ctx= thd->security_ctx;
/*
......@@ -5022,11 +5009,7 @@ check_routine_access(THD *thd, ulong want_access,char *db, char *name,
0, no_errors, 0))
return TRUE;
#ifndef NO_EMBEDDED_ACCESS_CHECKS
return check_grant_routine(thd, want_access, tables, is_proc, no_errors);
#else
return FALSE;
#endif
}
......@@ -5116,6 +5099,7 @@ bool check_merge_table_access(THD *thd, char *db,
return error;
}
#endif /*NO_EMBEDDED_ACCESS_CHECKS*/
/****************************************************************************
Check stack size; Send error if there isn't enough stack to continue
......
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