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1be8ac390d
Appoligies, had a dirty branch before pushing: This reverts commit053653a23c. This reverts commit0ff897807f. This reverts commit85b085972b. This reverts commitf3f45e46b6. This reverts commita470b3570a. This reverts commitf8b8d202bc. This reverts commit6b6f066fdd. This reverts commita701e9e6c3. This reverts commitc169838611.
430 lines
17 KiB
C++
430 lines
17 KiB
C++
#ifndef SQL_ACL_INCLUDED
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#define SQL_ACL_INCLUDED
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/* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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Copyright (c) 2017, MariaDB Corporation.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */
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#include "my_global.h" /* NO_EMBEDDED_ACCESS_CHECKS */
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#include "violite.h" /* SSL_type */
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#include "sql_class.h" /* LEX_COLUMN */
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#define SELECT_ACL (1UL << 0)
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#define INSERT_ACL (1UL << 1)
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#define UPDATE_ACL (1UL << 2)
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#define DELETE_ACL (1UL << 3)
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#define CREATE_ACL (1UL << 4)
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#define DROP_ACL (1UL << 5)
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#define RELOAD_ACL (1UL << 6)
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#define SHUTDOWN_ACL (1UL << 7)
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#define PROCESS_ACL (1UL << 8)
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#define FILE_ACL (1UL << 9)
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#define GRANT_ACL (1UL << 10)
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#define REFERENCES_ACL (1UL << 11)
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#define INDEX_ACL (1UL << 12)
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#define ALTER_ACL (1UL << 13)
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#define SHOW_DB_ACL (1UL << 14)
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#define SUPER_ACL (1UL << 15)
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#define CREATE_TMP_ACL (1UL << 16)
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#define LOCK_TABLES_ACL (1UL << 17)
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#define EXECUTE_ACL (1UL << 18)
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#define REPL_SLAVE_ACL (1UL << 19)
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#define REPL_CLIENT_ACL (1UL << 20)
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#define CREATE_VIEW_ACL (1UL << 21)
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#define SHOW_VIEW_ACL (1UL << 22)
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#define CREATE_PROC_ACL (1UL << 23)
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#define ALTER_PROC_ACL (1UL << 24)
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#define CREATE_USER_ACL (1UL << 25)
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#define EVENT_ACL (1UL << 26)
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#define TRIGGER_ACL (1UL << 27)
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#define CREATE_TABLESPACE_ACL (1UL << 28)
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/*
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don't forget to update
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1. static struct show_privileges_st sys_privileges[]
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2. static const char *command_array[] and static uint command_lengths[]
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3. mysql_system_tables.sql and mysql_system_tables_fix.sql
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4. acl_init() or whatever - to define behaviour for old privilege tables
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5. sql_yacc.yy - for GRANT/REVOKE to work
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*/
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#define NO_ACCESS (1UL << 30)
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#define DB_ACLS \
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(UPDATE_ACL | SELECT_ACL | INSERT_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
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GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL | CREATE_TMP_ACL | \
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LOCK_TABLES_ACL | EXECUTE_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL | \
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CREATE_PROC_ACL | ALTER_PROC_ACL | EVENT_ACL | TRIGGER_ACL)
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#define TABLE_ACLS \
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(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
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GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL | CREATE_VIEW_ACL | \
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SHOW_VIEW_ACL | TRIGGER_ACL)
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#define COL_ACLS \
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(SELECT_ACL | INSERT_ACL | UPDATE_ACL | REFERENCES_ACL)
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#define PROC_ACLS \
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(ALTER_PROC_ACL | EXECUTE_ACL | GRANT_ACL)
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#define SHOW_PROC_ACLS \
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(ALTER_PROC_ACL | EXECUTE_ACL | CREATE_PROC_ACL)
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#define GLOBAL_ACLS \
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(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
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RELOAD_ACL | SHUTDOWN_ACL | PROCESS_ACL | FILE_ACL | GRANT_ACL | \
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REFERENCES_ACL | INDEX_ACL | ALTER_ACL | SHOW_DB_ACL | SUPER_ACL | \
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CREATE_TMP_ACL | LOCK_TABLES_ACL | REPL_SLAVE_ACL | REPL_CLIENT_ACL | \
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EXECUTE_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL | CREATE_PROC_ACL | \
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ALTER_PROC_ACL | CREATE_USER_ACL | EVENT_ACL | TRIGGER_ACL | \
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CREATE_TABLESPACE_ACL)
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#define DEFAULT_CREATE_PROC_ACLS \
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(ALTER_PROC_ACL | EXECUTE_ACL)
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#define SHOW_CREATE_TABLE_ACLS \
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(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | \
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CREATE_ACL | DROP_ACL | ALTER_ACL | INDEX_ACL | \
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TRIGGER_ACL | REFERENCES_ACL | GRANT_ACL | CREATE_VIEW_ACL | SHOW_VIEW_ACL)
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/**
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Table-level privileges which are automatically "granted" to everyone on
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existing temporary tables (CREATE_ACL is necessary for ALTER ... RENAME).
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*/
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#define TMP_TABLE_ACLS \
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(SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | CREATE_ACL | DROP_ACL | \
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INDEX_ACL | ALTER_ACL)
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/*
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Defines to change the above bits to how things are stored in tables
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This is needed as the 'host' and 'db' table is missing a few privileges
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*/
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/* Privileges that needs to be reallocated (in continous chunks) */
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#define DB_CHUNK0 (SELECT_ACL | INSERT_ACL | UPDATE_ACL | DELETE_ACL | \
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CREATE_ACL | DROP_ACL)
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#define DB_CHUNK1 (GRANT_ACL | REFERENCES_ACL | INDEX_ACL | ALTER_ACL)
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#define DB_CHUNK2 (CREATE_TMP_ACL | LOCK_TABLES_ACL)
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#define DB_CHUNK3 (CREATE_VIEW_ACL | SHOW_VIEW_ACL | \
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CREATE_PROC_ACL | ALTER_PROC_ACL )
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#define DB_CHUNK4 (EXECUTE_ACL)
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#define DB_CHUNK5 (EVENT_ACL | TRIGGER_ACL)
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#define fix_rights_for_db(A) (((A) & DB_CHUNK0) | \
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(((A) << 4) & DB_CHUNK1) | \
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(((A) << 6) & DB_CHUNK2) | \
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(((A) << 9) & DB_CHUNK3) | \
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(((A) << 2) & DB_CHUNK4))| \
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(((A) << 9) & DB_CHUNK5)
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#define get_rights_for_db(A) (((A) & DB_CHUNK0) | \
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(((A) & DB_CHUNK1) >> 4) | \
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(((A) & DB_CHUNK2) >> 6) | \
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(((A) & DB_CHUNK3) >> 9) | \
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(((A) & DB_CHUNK4) >> 2))| \
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(((A) & DB_CHUNK5) >> 9)
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#define TBL_CHUNK0 DB_CHUNK0
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#define TBL_CHUNK1 DB_CHUNK1
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#define TBL_CHUNK2 (CREATE_VIEW_ACL | SHOW_VIEW_ACL)
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#define TBL_CHUNK3 TRIGGER_ACL
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#define fix_rights_for_table(A) (((A) & TBL_CHUNK0) | \
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(((A) << 4) & TBL_CHUNK1) | \
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(((A) << 11) & TBL_CHUNK2) | \
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(((A) << 15) & TBL_CHUNK3))
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#define get_rights_for_table(A) (((A) & TBL_CHUNK0) | \
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(((A) & TBL_CHUNK1) >> 4) | \
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(((A) & TBL_CHUNK2) >> 11) | \
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(((A) & TBL_CHUNK3) >> 15))
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#define fix_rights_for_column(A) (((A) & 7) | (((A) & ~7) << 8))
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#define get_rights_for_column(A) (((A) & 7) | ((A) >> 8))
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#define fix_rights_for_procedure(A) ((((A) << 18) & EXECUTE_ACL) | \
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(((A) << 23) & ALTER_PROC_ACL) | \
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(((A) << 8) & GRANT_ACL))
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#define get_rights_for_procedure(A) ((((A) & EXECUTE_ACL) >> 18) | \
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(((A) & ALTER_PROC_ACL) >> 23) | \
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(((A) & GRANT_ACL) >> 8))
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enum mysql_db_table_field
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{
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MYSQL_DB_FIELD_HOST = 0,
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MYSQL_DB_FIELD_DB,
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MYSQL_DB_FIELD_USER,
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MYSQL_DB_FIELD_SELECT_PRIV,
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MYSQL_DB_FIELD_INSERT_PRIV,
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MYSQL_DB_FIELD_UPDATE_PRIV,
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MYSQL_DB_FIELD_DELETE_PRIV,
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MYSQL_DB_FIELD_CREATE_PRIV,
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MYSQL_DB_FIELD_DROP_PRIV,
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MYSQL_DB_FIELD_GRANT_PRIV,
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MYSQL_DB_FIELD_REFERENCES_PRIV,
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MYSQL_DB_FIELD_INDEX_PRIV,
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MYSQL_DB_FIELD_ALTER_PRIV,
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MYSQL_DB_FIELD_CREATE_TMP_TABLE_PRIV,
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MYSQL_DB_FIELD_LOCK_TABLES_PRIV,
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MYSQL_DB_FIELD_CREATE_VIEW_PRIV,
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MYSQL_DB_FIELD_SHOW_VIEW_PRIV,
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MYSQL_DB_FIELD_CREATE_ROUTINE_PRIV,
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MYSQL_DB_FIELD_ALTER_ROUTINE_PRIV,
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MYSQL_DB_FIELD_EXECUTE_PRIV,
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MYSQL_DB_FIELD_EVENT_PRIV,
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MYSQL_DB_FIELD_TRIGGER_PRIV,
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MYSQL_DB_FIELD_COUNT
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};
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extern const TABLE_FIELD_DEF mysql_db_table_def;
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extern bool mysql_user_table_is_in_short_password_format;
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extern LEX_STRING host_not_specified;
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extern LEX_STRING current_user;
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extern LEX_STRING current_role;
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extern LEX_STRING current_user_and_current_role;
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static inline int access_denied_error_code(int passwd_used)
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{
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#ifdef mysqld_error_find_printf_error_used
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return 0;
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#else
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return passwd_used == 2 ? ER_ACCESS_DENIED_NO_PASSWORD_ERROR
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: ER_ACCESS_DENIED_ERROR;
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#endif
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}
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/* prototypes */
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bool hostname_requires_resolving(const char *hostname);
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bool acl_init(bool dont_read_acl_tables);
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bool acl_reload(THD *thd);
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void acl_free(bool end=0);
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ulong acl_get(const char *host, const char *ip,
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const char *user, const char *db, my_bool db_is_pattern);
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bool acl_authenticate(THD *thd, uint com_change_user_pkt_len);
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bool acl_getroot(Security_context *sctx, char *user, char *host,
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char *ip, char *db);
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bool acl_check_host(const char *host, const char *ip);
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bool check_change_password(THD *thd, LEX_USER *user);
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bool change_password(THD *thd, LEX_USER *user);
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bool mysql_grant_role(THD *thd, List<LEX_USER> &user_list, bool revoke);
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bool mysql_grant(THD *thd, const char *db, List <LEX_USER> &user_list,
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ulong rights, bool revoke, bool is_proxy);
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int mysql_table_grant(THD *thd, TABLE_LIST *table, List <LEX_USER> &user_list,
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List <LEX_COLUMN> &column_list, ulong rights,
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bool revoke);
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bool mysql_routine_grant(THD *thd, TABLE_LIST *table, bool is_proc,
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List <LEX_USER> &user_list, ulong rights,
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bool revoke, bool write_to_binlog);
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bool grant_init();
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void grant_free(void);
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bool grant_reload(THD *thd);
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bool check_grant(THD *thd, ulong want_access, TABLE_LIST *tables,
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bool any_combination_will_do, uint number, bool no_errors);
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bool check_grant_column (THD *thd, GRANT_INFO *grant,
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const char *db_name, const char *table_name,
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const char *name, uint length, Security_context *sctx);
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bool check_column_grant_in_table_ref(THD *thd, TABLE_LIST * table_ref,
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const char *name, uint length);
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bool check_grant_all_columns(THD *thd, ulong want_access,
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Field_iterator_table_ref *fields);
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bool check_grant_routine(THD *thd, ulong want_access,
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TABLE_LIST *procs, bool is_proc, bool no_error);
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bool check_grant_db(THD *thd,const char *db);
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bool check_global_access(THD *thd, ulong want_access, bool no_errors= false);
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bool check_access(THD *thd, ulong want_access, const char *db, ulong *save_priv,
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GRANT_INTERNAL_INFO *grant_internal_info,
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bool dont_check_global_grants, bool no_errors);
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ulong get_table_grant(THD *thd, TABLE_LIST *table);
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ulong get_column_grant(THD *thd, GRANT_INFO *grant,
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const char *db_name, const char *table_name,
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const char *field_name);
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bool get_show_user(THD *thd, LEX_USER *lex_user, const char **username,
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const char **hostname, const char **rolename);
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void mysql_show_grants_get_fields(THD *thd, List<Item> *fields,
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const char *name);
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bool mysql_show_grants(THD *thd, LEX_USER *user);
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bool mysql_show_create_user(THD *thd, LEX_USER *user);
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int fill_schema_enabled_roles(THD *thd, TABLE_LIST *tables, COND *cond);
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int fill_schema_applicable_roles(THD *thd, TABLE_LIST *tables, COND *cond);
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void get_privilege_desc(char *to, uint max_length, ulong access);
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void get_mqh(const char *user, const char *host, USER_CONN *uc);
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bool mysql_create_user(THD *thd, List <LEX_USER> &list, bool handle_as_role);
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bool mysql_drop_user(THD *thd, List <LEX_USER> &list, bool handle_as_role);
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bool mysql_rename_user(THD *thd, List <LEX_USER> &list);
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int mysql_alter_user(THD *thd, List <LEX_USER> &list);
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bool mysql_revoke_all(THD *thd, List <LEX_USER> &list);
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void fill_effective_table_privileges(THD *thd, GRANT_INFO *grant,
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const char *db, const char *table);
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bool sp_revoke_privileges(THD *thd, const char *sp_db, const char *sp_name,
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bool is_proc);
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bool sp_grant_privileges(THD *thd, const char *sp_db, const char *sp_name,
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bool is_proc);
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bool check_routine_level_acl(THD *thd, const char *db, const char *name,
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bool is_proc);
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bool is_acl_user(const char *host, const char *user);
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int fill_schema_user_privileges(THD *thd, TABLE_LIST *tables, COND *cond);
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int fill_schema_schema_privileges(THD *thd, TABLE_LIST *tables, COND *cond);
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int fill_schema_table_privileges(THD *thd, TABLE_LIST *tables, COND *cond);
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int fill_schema_column_privileges(THD *thd, TABLE_LIST *tables, COND *cond);
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int wild_case_compare(CHARSET_INFO *cs, const char *str,const char *wildstr);
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/**
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Result of an access check for an internal schema or table.
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Internal ACL checks are always performed *before* using
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the grant tables.
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This mechanism enforces that the server implementation has full
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control on its internal tables.
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Depending on the internal check result, the server implementation
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can choose to:
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- always allow access,
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- always deny access,
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- delegate the decision to the database administrator,
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by using the grant tables.
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*/
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enum ACL_internal_access_result
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{
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/**
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Access granted for all the requested privileges,
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do not use the grant tables.
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This flag is used only for the INFORMATION_SCHEMA privileges,
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for compatibility reasons.
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*/
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ACL_INTERNAL_ACCESS_GRANTED,
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/** Access denied, do not use the grant tables. */
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ACL_INTERNAL_ACCESS_DENIED,
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/** No decision yet, use the grant tables. */
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ACL_INTERNAL_ACCESS_CHECK_GRANT
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};
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/**
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Per internal table ACL access rules.
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This class is an interface.
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Per table(s) specific access rule should be implemented in a subclass.
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@sa ACL_internal_schema_access
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*/
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class ACL_internal_table_access
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{
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public:
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ACL_internal_table_access()
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{}
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virtual ~ACL_internal_table_access()
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{}
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/**
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Check access to an internal table.
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When a privilege is granted, this method add the requested privilege
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to save_priv.
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@param want_access the privileges requested
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@param [in, out] save_priv the privileges granted
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@return
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@retval ACL_INTERNAL_ACCESS_GRANTED All the requested privileges
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are granted, and saved in save_priv.
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@retval ACL_INTERNAL_ACCESS_DENIED At least one of the requested
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privileges was denied.
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@retval ACL_INTERNAL_ACCESS_CHECK_GRANT No requested privilege
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was denied, and grant should be checked for at least one
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privilege. Requested privileges that are granted, if any, are saved
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in save_priv.
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*/
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virtual ACL_internal_access_result check(ulong want_access,
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ulong *save_priv) const= 0;
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};
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/**
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Per internal schema ACL access rules.
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This class is an interface.
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Each per schema specific access rule should be implemented
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in a different subclass, and registered.
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Per schema access rules can control:
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- every schema privileges on schema.*
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- every table privileges on schema.table
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@sa ACL_internal_schema_registry
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*/
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class ACL_internal_schema_access
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{
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public:
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ACL_internal_schema_access()
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{}
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virtual ~ACL_internal_schema_access()
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{}
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/**
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Check access to an internal schema.
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@param want_access the privileges requested
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@param [in, out] save_priv the privileges granted
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@return
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@retval ACL_INTERNAL_ACCESS_GRANTED All the requested privileges
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are granted, and saved in save_priv.
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@retval ACL_INTERNAL_ACCESS_DENIED At least one of the requested
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privileges was denied.
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@retval ACL_INTERNAL_ACCESS_CHECK_GRANT No requested privilege
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was denied, and grant should be checked for at least one
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privilege. Requested privileges that are granted, if any, are saved
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in save_priv.
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*/
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virtual ACL_internal_access_result check(ulong want_access,
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ulong *save_priv) const= 0;
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/**
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Search for per table ACL access rules by table name.
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@param name the table name
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@return per table access rules, or NULL
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*/
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virtual const ACL_internal_table_access *lookup(const char *name) const= 0;
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};
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/**
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A registry for per internal schema ACL.
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An 'internal schema' is a database schema maintained by the
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server implementation, such as 'performance_schema' and 'INFORMATION_SCHEMA'.
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*/
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|
class ACL_internal_schema_registry
|
|
{
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|
public:
|
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static void register_schema(const LEX_STRING *name,
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|
const ACL_internal_schema_access *access);
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|
static const ACL_internal_schema_access *lookup(const char *name);
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|
};
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|
|
|
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);
|
|
int acl_setrole(THD *thd, char *rolename, ulonglong access);
|
|
int acl_check_setrole(THD *thd, char *rolename, ulonglong *access);
|
|
int acl_check_set_default_role(THD *thd, const char *host, const char *user, const char *role);
|
|
int acl_set_default_role(THD *thd, const char *host, const char *user,
|
|
const char *rolename);
|
|
|
|
extern SHOW_VAR acl_statistics[];
|
|
|
|
/* Check if a role is granted to a user/role.
|
|
|
|
If hostname == NULL, search for a role as the starting grantee.
|
|
*/
|
|
bool check_role_is_granted(const char *username,
|
|
const char *hostname,
|
|
const char *rolename);
|
|
|
|
#ifndef DBUG_OFF
|
|
extern ulong role_global_merges, role_db_merges, role_table_merges,
|
|
role_column_merges, role_routine_merges;
|
|
#endif
|
|
#endif /* SQL_ACL_INCLUDED */
|