WL#2818 (Add creator to the trigger definition for privilege

checks on trigger activation)

mysql-test/r/information_schema.result

@@ -722,6 +722,7 @@ information_schema	ROUTINES	SQL_MODE
 information_schema	TRIGGERS	ACTION_CONDITION
 information_schema	TRIGGERS	ACTION_STATEMENT
 information_schema	TRIGGERS	SQL_MODE
+information_schema	TRIGGERS	DEFINER
 information_schema	VIEWS	VIEW_DEFINITION
 select table_name, column_name, data_type from information_schema.columns
 where data_type = 'datetime';
@@ -800,45 +801,45 @@ set @fired:= "Yes";
 end if;
 end|
 show triggers;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 trg1	INSERT	t1	
 begin
 if new.j > 10 then
 set new.j := 10;
 end if;
-end	BEFORE	NULL	
+end	BEFORE	NULL		root@localhost
 trg2	UPDATE	t1	
 begin
 if old.i % 2 = 0 then
 set new.j := -1;
 end if;
-end	BEFORE	NULL	
+end	BEFORE	NULL		root@localhost
 trg3	UPDATE	t1	
 begin
 if new.j = -1 then
 set @fired:= "Yes";
 end if;
-end	AFTER	NULL	
+end	AFTER	NULL		root@localhost
 select * from information_schema.triggers;
-TRIGGER_CATALOG	TRIGGER_SCHEMA	TRIGGER_NAME	EVENT_MANIPULATION	EVENT_OBJECT_CATALOG	EVENT_OBJECT_SCHEMA	EVENT_OBJECT_TABLE	ACTION_ORDER	ACTION_CONDITION	ACTION_STATEMENT	ACTION_ORIENTATION	ACTION_TIMING	ACTION_REFERENCE_OLD_TABLE	ACTION_REFERENCE_NEW_TABLE	ACTION_REFERENCE_OLD_ROW	ACTION_REFERENCE_NEW_ROW	CREATED	SQL_MODE
+TRIGGER_CATALOG	TRIGGER_SCHEMA	TRIGGER_NAME	EVENT_MANIPULATION	EVENT_OBJECT_CATALOG	EVENT_OBJECT_SCHEMA	EVENT_OBJECT_TABLE	ACTION_ORDER	ACTION_CONDITION	ACTION_STATEMENT	ACTION_ORIENTATION	ACTION_TIMING	ACTION_REFERENCE_OLD_TABLE	ACTION_REFERENCE_NEW_TABLE	ACTION_REFERENCE_OLD_ROW	ACTION_REFERENCE_NEW_ROW	CREATED	SQL_MODE	DEFINER
 NULL	test	trg1	INSERT	NULL	test	t1	0	NULL	
 begin
 if new.j > 10 then
 set new.j := 10;
 end if;
-end	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL	
+end	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		root@localhost
 NULL	test	trg2	UPDATE	NULL	test	t1	0	NULL	
 begin
 if old.i % 2 = 0 then
 set new.j := -1;
 end if;
-end	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL	
+end	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		root@localhost
 NULL	test	trg3	UPDATE	NULL	test	t1	0	NULL	
 begin
 if new.j = -1 then
 set @fired:= "Yes";
 end if;
-end	ROW	AFTER	NULL	NULL	OLD	NEW	NULL	
+end	ROW	AFTER	NULL	NULL	OLD	NEW	NULL		root@localhost
 drop trigger trg1;
 drop trigger trg2;
 drop trigger trg3;

mysql-test/r/mysqldump.result

@@ -1926,23 +1926,23 @@ end if;
 end|
 set sql_mode=default|
 show triggers like "t1";
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 trg1	INSERT	t1	
 begin
 if new.a > 10 then
 set new.a := 10;
 set new.a := 11;
 end if;
-end	BEFORE	0000-00-00 00:00:00	
+end	BEFORE	0000-00-00 00:00:00		root@localhost
 trg2	UPDATE	t1	 begin
 if old.a % 2 = 0 then set new.b := 12; end if;
-end	BEFORE	0000-00-00 00:00:00	
+end	BEFORE	0000-00-00 00:00:00		root@localhost
 trg3	UPDATE	t1	
 begin
 if new.a = -1 then
 set @fired:= "Yes";
 end if;
-end	AFTER	0000-00-00 00:00:00	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER
+end	AFTER	0000-00-00 00:00:00	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER	root@localhost
 INSERT INTO t1 (a) VALUES (1),(2),(3),(22);
 update t1 set a = 4 where a=3;
 
@@ -2085,29 +2085,29 @@ Tables_in_test
 t1
 t2
 show triggers;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 trg1	INSERT	t1	
 begin
 if new.a > 10 then
 set new.a := 10;
 set new.a := 11;
 end if;
-end	BEFORE	#	
+end	BEFORE	#		root@localhost
 trg2	UPDATE	t1	 begin
 if old.a % 2 = 0 then set new.b := 12; end if;
-end	BEFORE	#	
+end	BEFORE	#		root@localhost
 trg3	UPDATE	t1	
 begin
 if new.a = -1 then
 set @fired:= "Yes";
 end if;
-end	AFTER	#	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER
+end	AFTER	#	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER	root@localhost
 trg4	INSERT	t2	
 begin
 if new.a > 10 then
 set @fired:= "No";
 end if;
-end	BEFORE	#	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER
+end	BEFORE	#	STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER	root@localhost
 DROP TABLE t1, t2;
 --port=1234
 --port=1234
@@ -2130,9 +2130,9 @@ SELECT * FROM `test2`;
 a2
 1
 SHOW TRIGGERS;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 testref	INSERT	test1	 BEGIN
-INSERT INTO test2 SET a2 = NEW.a1; END	BEFORE	NULL	
+INSERT INTO test2 SET a2 = NEW.a1; END	BEFORE	NULL		root@localhost
 SELECT * FROM `test1`;
 a1
 1
@@ -2147,6 +2147,7 @@ DROP FUNCTION IF EXISTS bug9056_func1;
 DROP FUNCTION IF EXISTS bug9056_func2;
 DROP PROCEDURE IF EXISTS bug9056_proc1;
 DROP PROCEDURE IF EXISTS bug9056_proc2;
+DROP PROCEDURE IF EXISTS `a'b`;
 CREATE TABLE t1 (id int);
 INSERT INTO t1 VALUES(1), (2), (3), (4), (5);
 CREATE FUNCTION `bug9056_func1`(a INT, b INT) RETURNS int(11) RETURN a+b //

mysql-test/r/rpl_ddl.result

@@ -1465,13 +1465,13 @@ flush logs;
 
 -------- switch to master -------
 SHOW TRIGGERS;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
-trg1	INSERT	t1	 SET @a:=1	BEFORE	NULL	
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
+trg1	INSERT	t1	 SET @a:=1	BEFORE	NULL		root@localhost
 
 -------- switch to slave -------
 SHOW TRIGGERS;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
-trg1	INSERT	t1	 SET @a:=1	BEFORE	NULL	
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
+trg1	INSERT	t1	 SET @a:=1	BEFORE	NULL		root@localhost
 
 ######## DROP TRIGGER trg1  ########
 
@@ -1520,11 +1520,11 @@ flush logs;
 
 -------- switch to master -------
 SHOW TRIGGERS;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 
 -------- switch to slave -------
 SHOW TRIGGERS;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
 
 ######## CREATE USER user1@localhost  ########
 

mysql-test/r/rpl_sp.result

@@ -256,7 +256,7 @@ a
 show binlog events in 'master-bin.000002' from 98;
 Log_name	Pos	Event_type	Server_id	End_log_pos	Info
 master-bin.000002	#	Query	1	#	use `mysqltest1`; delete from t1
-master-bin.000002	#	Query	1	#	use `mysqltest1`; create trigger trg before insert on t1 for each row set new.a= 10
+master-bin.000002	#	Query	1	#	use `mysqltest1`; CREATE DEFINER=`root`@`localhost` trigger trg before insert on t1 for each row set new.a= 10
 master-bin.000002	#	Query	1	#	use `mysqltest1`; insert into t1 values (1)
 master-bin.000002	#	Query	1	#	use `mysqltest1`; delete from t1
 master-bin.000002	#	Query	1	#	use `mysqltest1`; drop trigger trg

mysql-test/r/rpl_trigger.result

@@ -89,8 +89,24 @@ insert into t1 set a = now();
 select a=b && a=c from t1;
 a=b && a=c
 1
+SELECT routine_name, definer
+FROM information_schema.routines;
+routine_name	definer
+bug12480	root@localhost
+SELECT trigger_name, definer
+FROM information_schema.triggers;
+trigger_name	definer
+t1_first	root@localhost
 
 --- On slave --
+SELECT routine_name, definer
+FROM information_schema.routines;
+routine_name	definer
+bug12480	@
+SELECT trigger_name, definer
+FROM information_schema.triggers;
+trigger_name	definer
+t1_first	root@localhost
 select a=b && a=c from t1;
 a=b && a=c
 1

mysql-test/r/skip_grants.result

@@ -4,7 +4,7 @@ drop procedure if exists f1;
 use test;
 create table t1 (field1 INT);
 CREATE VIEW v1 AS SELECT field1 FROM t1;
-ERROR HY000: View definer is not fully qualified
+ERROR HY000: Definer is not fully qualified
 drop table t1;
 create procedure f1() select 1;
 drop procedure f1;

mysql-test/r/trigger-compat.result

+DELETE FROM mysql.user WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.db WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.tables_priv WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.columns_priv WHERE User LIKE 'mysqltest_%';
+FLUSH PRIVILEGES;
+DROP DATABASE IF EXISTS mysqltest_db1;
+CREATE DATABASE mysqltest_db1;
+CREATE USER mysqltest_dfn@localhost;
+CREATE USER mysqltest_inv@localhost;
+GRANT SUPER ON *.* TO mysqltest_dfn@localhost;
+GRANT CREATE ON mysqltest_db1.* TO mysqltest_dfn@localhost;
+
+---> connection: wl2818_definer_con
+CREATE TABLE t1(num_value INT);
+CREATE TABLE t2(user_str TEXT);
+CREATE TRIGGER wl2818_trg1 BEFORE INSERT ON t1
+FOR EACH ROW
+INSERT INTO t2 VALUES(CURRENT_USER());
+
+---> patching t1.TRG...
+
+CREATE TRIGGER wl2818_trg2 AFTER INSERT ON t1
+FOR EACH ROW
+INSERT INTO t2 VALUES(CURRENT_USER());
+Warnings:
+Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'wl2818_trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.
+
+SELECT trigger_name, definer FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
+trigger_name	definer
+wl2818_trg1	
+wl2818_trg2	mysqltest_dfn@localhost
+Warnings:
+Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'wl2818_trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.
+
+SELECT * FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
+TRIGGER_CATALOG	TRIGGER_SCHEMA	TRIGGER_NAME	EVENT_MANIPULATION	EVENT_OBJECT_CATALOG	EVENT_OBJECT_SCHEMA	EVENT_OBJECT_TABLE	ACTION_ORDER	ACTION_CONDITION	ACTION_STATEMENT	ACTION_ORIENTATION	ACTION_TIMING	ACTION_REFERENCE_OLD_TABLE	ACTION_REFERENCE_NEW_TABLE	ACTION_REFERENCE_OLD_ROW	ACTION_REFERENCE_NEW_ROW	CREATED	SQL_MODE	DEFINER
+NULL	mysqltest_db1	wl2818_trg1	INSERT	NULL	mysqltest_db1	t1	0	NULL	
+INSERT INTO t2 VALUES(CURRENT_USER())	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		
+NULL	mysqltest_db1	wl2818_trg2	INSERT	NULL	mysqltest_db1	t1	0	NULL	
+INSERT INTO t2 VALUES(CURRENT_USER())	ROW	AFTER	NULL	NULL	OLD	NEW	NULL		mysqltest_dfn@localhost

mysql-test/r/trigger-grant.result

+DELETE FROM mysql.user WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.db WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.tables_priv WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.columns_priv WHERE User LIKE 'mysqltest_%';
+FLUSH PRIVILEGES;
+DROP DATABASE IF EXISTS mysqltest_db1;
+CREATE DATABASE mysqltest_db1;
+CREATE USER mysqltest_dfn@localhost;
+CREATE USER mysqltest_inv@localhost;
+GRANT SUPER ON *.* TO mysqltest_dfn@localhost;
+GRANT CREATE ON mysqltest_db1.* TO mysqltest_dfn@localhost;
+
+---> connection: wl2818_definer_con
+CREATE TABLE t1(num_value INT);
+CREATE TABLE t2(user_str TEXT);
+CREATE TRIGGER trg1 AFTER INSERT ON t1
+FOR EACH ROW
+INSERT INTO t2 VALUES(CURRENT_USER());
+
+---> connection: default
+GRANT ALL PRIVILEGES ON mysqltest_db1.t1 TO mysqltest_dfn@localhost;
+GRANT ALL PRIVILEGES ON mysqltest_db1.t2 TO mysqltest_dfn@localhost;
+GRANT ALL PRIVILEGES ON mysqltest_db1.t1
+TO 'mysqltest_inv'@localhost;
+GRANT SELECT ON mysqltest_db1.t2
+TO 'mysqltest_inv'@localhost;
+
+---> connection: wl2818_definer_con
+use mysqltest_db1;
+INSERT INTO t1 VALUES(1);
+SELECT * FROM t1;
+num_value
+1
+SELECT * FROM t2;
+user_str
+mysqltest_dfn@localhost
+
+---> connection: wl2818_invoker_con
+use mysqltest_db1;
+INSERT INTO t1 VALUES(2);
+SELECT * FROM t1;
+num_value
+1
+2
+SELECT * FROM t2;
+user_str
+mysqltest_dfn@localhost
+mysqltest_dfn@localhost
+
+---> connection: default
+use mysqltest_db1;
+REVOKE INSERT ON mysqltest_db1.t2 FROM mysqltest_dfn@localhost;
+
+---> connection: wl2818_invoker_con
+use mysqltest_db1;
+INSERT INTO t1 VALUES(3);
+ERROR 42000: INSERT command denied to user 'mysqltest_dfn'@'localhost' for table 't2'
+SELECT * FROM t1;
+num_value
+1
+2
+3
+SELECT * FROM t2;
+user_str
+mysqltest_dfn@localhost
+mysqltest_dfn@localhost
+
+---> connection: default
+use mysqltest_db1;
+REVOKE SELECT ON mysqltest_db1.t1 FROM mysqltest_dfn@localhost;
+
+---> connection: wl2818_definer_con
+use mysqltest_db1;
+DROP TRIGGER trg1;
+SET @new_sum = 0;
+SET @old_sum = 0;
+---> INSERT INTO statement; BEFORE timing
+CREATE TRIGGER trg1 BEFORE INSERT ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+INSERT INTO t1 VALUES(4);
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> INSERT INTO statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER INSERT ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+INSERT INTO t1 VALUES(5);
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> UPDATE statement; BEFORE timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 BEFORE UPDATE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+UPDATE t1 SET num_value = 10;
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> UPDATE statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER UPDATE ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+UPDATE t1 SET num_value = 20;
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> DELETE statement; BEFORE timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 BEFORE DELETE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+DELETE FROM t1;
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> DELETE statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER DELETE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+DELETE FROM t1;
+ERROR 42000: SELECT command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+
+---> connection: default
+use mysqltest_db1;
+GRANT SELECT ON mysqltest_db1.t1 TO mysqltest_dfn@localhost;
+REVOKE UPDATE ON mysqltest_db1.t1 FROM mysqltest_dfn@localhost;
+
+---> connection: wl2818_definer_con
+use mysqltest_db1;
+DROP TRIGGER trg1;
+SET @new_sum = 0;
+SET @old_sum = 0;
+---> INSERT INTO statement; BEFORE timing
+CREATE TRIGGER trg1 BEFORE INSERT ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+INSERT INTO t1 VALUES(4);
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> INSERT INTO statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER INSERT ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+INSERT INTO t1 VALUES(5);
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> UPDATE statement; BEFORE timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 BEFORE UPDATE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+UPDATE t1 SET num_value = 10;
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> UPDATE statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER UPDATE ON t1
+FOR EACH ROW
+SET @new_sum = @new_sum + NEW.num_value;
+UPDATE t1 SET num_value = 20;
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> DELETE statement; BEFORE timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 BEFORE DELETE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+DELETE FROM t1;
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+---> DELETE statement; AFTER timing
+DROP TRIGGER trg1;
+CREATE TRIGGER trg1 AFTER DELETE ON t1
+FOR EACH ROW
+SET @old_sum = @old_sum + OLD.num_value;
+DELETE FROM t1;
+ERROR 42000: UPDATE command denied to user 'mysqltest_dfn'@'localhost' for table 't1'
+
+---> connection: wl2818_definer_con
+use mysqltest_db1;
+DROP TRIGGER trg1;
+CREATE DEFINER='mysqltest_inv'@'localhost'
+  TRIGGER trg1 BEFORE INSERT ON t1
+FOR EACH ROW
+SET @new_sum = 0;
+CREATE DEFINER='mysqltest_nonexs'@'localhost'
+  TRIGGER trg2 AFTER INSERT ON t1
+FOR EACH ROW
+SET @new_sum = 0;
+Warnings:
+Note	1449	There is no 'mysqltest_nonexs'@'localhost' registered
+INSERT INTO t1 VALUES(6);
+ERROR 42000: Access denied; you need the SUPER privilege for this operation
+SHOW TRIGGERS;
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
+trg1	INSERT	t1	
+SET @new_sum = 0	BEFORE	NULL		mysqltest_inv@localhost
+trg2	INSERT	t1	
+SET @new_sum = 0	AFTER	NULL		mysqltest_nonexs@localhost
+DROP TRIGGER trg1;
+DROP TRIGGER trg2;
+CREATE TRIGGER trg1 BEFORE INSERT ON t1
+FOR EACH ROW
+SET @a = 1;
+CREATE TRIGGER trg2 AFTER INSERT ON t1
+FOR EACH ROW
+SET @a = 2;
+CREATE TRIGGER trg3 BEFORE UPDATE ON t1
+FOR EACH ROW
+SET @a = 3;
+CREATE TRIGGER trg4 AFTER UPDATE ON t1
+FOR EACH ROW
+SET @a = 4;
+CREATE TRIGGER trg5 BEFORE DELETE ON t1
+FOR EACH ROW
+SET @a = 5;
+
+SELECT trigger_name, definer FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
+trigger_name	definer
+trg1	
+trg2	@
+trg3	@abc@def@@
+trg4	@hostname
+trg5	@abcdef@@@hostname
+Warnings:
+Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.
+
+SELECT * FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
+TRIGGER_CATALOG	TRIGGER_SCHEMA	TRIGGER_NAME	EVENT_MANIPULATION	EVENT_OBJECT_CATALOG	EVENT_OBJECT_SCHEMA	EVENT_OBJECT_TABLE	ACTION_ORDER	ACTION_CONDITION	ACTION_STATEMENT	ACTION_ORIENTATION	ACTION_TIMING	ACTION_REFERENCE_OLD_TABLE	ACTION_REFERENCE_NEW_TABLE	ACTION_REFERENCE_OLD_ROW	ACTION_REFERENCE_NEW_ROW	CREATED	SQL_MODE	DEFINER
+NULL	mysqltest_db1	trg1	INSERT	NULL	mysqltest_db1	t1	0	NULL	
+SET @a = 1	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		
+NULL	mysqltest_db1	trg2	INSERT	NULL	mysqltest_db1	t1	0	NULL	
+SET @a = 2	ROW	AFTER	NULL	NULL	OLD	NEW	NULL		@
+NULL	mysqltest_db1	trg3	UPDATE	NULL	mysqltest_db1	t1	0	NULL	
+SET @a = 3	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		@abc@def@@
+NULL	mysqltest_db1	trg4	UPDATE	NULL	mysqltest_db1	t1	0	NULL	
+SET @a = 4	ROW	AFTER	NULL	NULL	OLD	NEW	NULL		@hostname
+NULL	mysqltest_db1	trg5	DELETE	NULL	mysqltest_db1	t1	0	NULL	
+SET @a = 5	ROW	BEFORE	NULL	NULL	OLD	NEW	NULL		@abcdef@@@hostname
+
+---> connection: default
+DROP USER mysqltest_dfn@localhost;
+DROP USER mysqltest_inv@localhost;
+DROP DATABASE mysqltest_db1;
+Warnings:
+Warning	1454	No definer attribute for trigger 'mysqltest_db1'.'trg1'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger.

mysql-test/r/trigger.result

@@ -611,9 +611,9 @@ select @a;
 @a
 10
 show triggers;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
-t1_bi	INSERT	t1	set new."t1 column" = 5	BEFORE	#	REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ANSI
-t1_af	INSERT	t1	 set @a=10	AFTER	#	
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
+t1_bi	INSERT	t1	set new."t1 column" = 5	BEFORE	#	REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_SPACE,ANSI	root@localhost
+t1_af	INSERT	t1	 set @a=10	AFTER	#		root@localhost
 drop table t1;
 set sql_mode="traditional";
 create table t1 (a date);
@@ -633,8 +633,8 @@ t1	CREATE TABLE `t1` (
   `a` date default NULL
 ) ENGINE=MyISAM DEFAULT CHARSET=latin1
 show triggers;
-Trigger	Event	Table	Statement	Timing	Created	sql_mode
-t1_bi	INSERT	t1	 set new.a = '2004-01-00'	BEFORE	#	
+Trigger	Event	Table	Statement	Timing	Created	sql_mode	Definer
+t1_bi	INSERT	t1	 set new.a = '2004-01-00'	BEFORE	#		root@localhost
 drop table t1;
 create table t1 (id int);
 create trigger t1_ai after insert on t1 for each row flush tables;

mysql-test/r/view.result

@@ -2199,10 +2199,10 @@ r_object_id	users_names
 drop view v1, v2;
 drop table t1, t2;
 create definer=some_user@`` sql security invoker view v1 as select 1;
-ERROR HY000: View definer is not fully qualified
+ERROR HY000: Definer is not fully qualified
 create definer=some_user@localhost sql security invoker view v1 as select 1;
 Warnings:
-Note	1449	There is not some_user@localhost registered
+Note	1449	There is no 'some_user'@'localhost' registered
 show create view v1;
 View	Create View
 v1	CREATE ALGORITHM=UNDEFINED DEFINER=`some_user`@`localhost` SQL SECURITY INVOKER VIEW `v1` AS select 1 AS `1`

mysql-test/r/view_grant.result

@@ -13,7 +13,7 @@ create table mysqltest.t2 (a int, b int);
 grant select on mysqltest.t1 to mysqltest_1@localhost;
 grant create view,select on test.* to mysqltest_1@localhost;
 create definer=root@localhost view v1 as select * from mysqltest.t1;
-ERROR HY000: You need the SUPER privilege for creation view with root@localhost definer
+ERROR 42000: Access denied; you need the SUPER privilege for this operation
 create view v1 as select * from mysqltest.t1;
 alter view v1 as select * from mysqltest.t1;
 ERROR 42000: DROP command denied to user 'mysqltest_1'@'localhost' for table 'v1'

mysql-test/t/mysqldump.test

@@ -882,6 +882,7 @@ DROP FUNCTION IF EXISTS bug9056_func1;
 DROP FUNCTION IF EXISTS bug9056_func2;
 DROP PROCEDURE IF EXISTS bug9056_proc1;
 DROP PROCEDURE IF EXISTS bug9056_proc2;
+DROP PROCEDURE IF EXISTS `a'b`;
 --enable_warnings
 
 CREATE TABLE t1 (id int);

mysql-test/t/rpl_trigger.test

@@ -87,12 +87,35 @@ insert into t1 set a = now();
 select a=b && a=c from t1;
 let $time=`select a from t1`;
 
+# Check that definer attribute is replicated properly:
+#   - dump definers on the master;
+#   - wait for the slave to synchronize with the master;
+#   - dump definers on the slave;
+
+SELECT routine_name, definer
+FROM information_schema.routines;
+
+SELECT trigger_name, definer
+FROM information_schema.triggers;
+
 save_master_pos;
 connection slave;
 sync_with_master;
 --disable_query_log
 select "--- On slave --" as "";
 --enable_query_log
+
+# XXX: Definers of stored procedures and functions are not replicated. WL#2897
+# (Complete definer support in the stored routines) addresses this issue. So,
+# the result file is expected to be changed after implementation of this WL
+# item.
+
+SELECT routine_name, definer
+FROM information_schema.routines;
+
+SELECT trigger_name, definer
+FROM information_schema.triggers;
+
 select a=b && a=c from t1;
 --disable_query_log
 eval select a='$time' as 'test' from t1;

mysql-test/t/skip_grants.test

@@ -9,7 +9,7 @@ use test;
 # test that we can create VIEW if privileges check switched off
 #
 create table t1 (field1 INT);
--- error ER_NO_VIEW_USER
+-- error ER_MALFORMED_DEFINER
 CREATE VIEW v1 AS SELECT field1 FROM t1;
 drop table t1;
 

mysql-test/t/trigger-compat.test

+# Test case(s) in this file contain(s) GRANT/REVOKE statements, which are not
+# supported in embedded server. So, this test should not be run on embedded
+# server.
+
+-- source include/not_embedded.inc
+
+###########################################################################
+#
+# Tests for WL#2818:
+#   - Check that triggers created w/o DEFINER information work well:
+#     - create the first trigger;
+#     - manually remove definer information from corresponding TRG file;
+#     - create the second trigger (the first trigger will be reloaded; check
+#       that we receive a warning);
+#     - check that the triggers loaded correctly;
+#
+###########################################################################
+
+#
+# Prepare environment.
+#
+
+DELETE FROM mysql.user WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.db WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.tables_priv WHERE User LIKE 'mysqltest_%';
+DELETE FROM mysql.columns_priv WHERE User LIKE 'mysqltest_%';
+FLUSH PRIVILEGES;
+
+--disable_warnings
+DROP DATABASE IF EXISTS mysqltest_db1;
+--enable_warnings
+
+CREATE DATABASE mysqltest_db1;
+
+CREATE USER mysqltest_dfn@localhost;
+CREATE USER mysqltest_inv@localhost;
+
+GRANT SUPER ON *.* TO mysqltest_dfn@localhost;
+GRANT CREATE ON mysqltest_db1.* TO mysqltest_dfn@localhost;
+
+#
+# Create a table and the first trigger.
+#
+
+--connect (wl2818_definer_con,localhost,mysqltest_dfn,,mysqltest_db1)
+--connection wl2818_definer_con
+--echo
+--echo ---> connection: wl2818_definer_con
+
+CREATE TABLE t1(num_value INT);
+CREATE TABLE t2(user_str TEXT);
+
+CREATE TRIGGER wl2818_trg1 BEFORE INSERT ON t1
+  FOR EACH ROW
+    INSERT INTO t2 VALUES(CURRENT_USER());
+
+#
+# Remove definers from TRG file.
+#
+
+--echo
+--echo ---> patching t1.TRG...
+
+--exec grep --text -v 'definers=' $MYSQL_TEST_DIR/var/master-data/mysqltest_db1/t1.TRG > $MYSQL_TEST_DIR/var/tmp/t1.TRG
+--exec mv $MYSQL_TEST_DIR/var/tmp/t1.TRG $MYSQL_TEST_DIR/var/master-data/mysqltest_db1/t1.TRG
+
+#
+# Create a new trigger.
+#
+
+--echo
+
+CREATE TRIGGER wl2818_trg2 AFTER INSERT ON t1
+  FOR EACH ROW
+    INSERT INTO t2 VALUES(CURRENT_USER());
+
+--echo
+
+SELECT trigger_name, definer FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;
+
+--echo
+
+SELECT * FROM INFORMATION_SCHEMA.TRIGGERS ORDER BY trigger_name;

mysql-test/t/view.test

@@ -2081,7 +2081,7 @@ drop table t1, t2;
 #
 # DEFINER information check
 #
--- error ER_NO_VIEW_USER
+-- error ER_MALFORMED_DEFINER
 create definer=some_user@`` sql security invoker view v1 as select 1;
 create definer=some_user@localhost sql security invoker view v1 as select 1;
 show create view v1;

mysql-test/t/view_grant.test

@@ -24,7 +24,7 @@ grant create view,select on test.* to mysqltest_1@localhost;
 connect (user1,localhost,mysqltest_1,,test);
 connection user1;
 
--- error ER_VIEW_OTHER_USER
+-- error ER_SPECIFIC_ACCESS_DENIED
 create definer=root@localhost view v1 as select * from mysqltest.t1;
 create view v1 as select * from mysqltest.t1;
 # try to modify view without DROP privilege on it

sql/item_func.cc

@@ -4894,7 +4894,7 @@ Item_func_sp::tmp_table_field(TABLE *t_arg)
 
 
 /*
-  Find the function and chack access rigths to the function
+  Find the function and check access rights to the function
 
   SYNOPSIS
     find_and_check_access()

sql/mysql_priv.h

@@ -522,8 +522,9 @@ bool delete_precheck(THD *thd, TABLE_LIST *tables);
 bool insert_precheck(THD *thd, TABLE_LIST *tables);
 bool create_table_precheck(THD *thd, TABLE_LIST *tables,
                            TABLE_LIST *create_table);
-bool default_view_definer(Security_context *sctx, st_lex_user *definer);
 
+bool get_default_definer(THD *thd, LEX_USER *definer);
+LEX_USER *create_definer(THD *thd, LEX_STRING *user_name, LEX_STRING *host_name);
 
 enum enum_mysql_completiontype {
   ROLLBACK_RELEASE=-2, ROLLBACK=1,  ROLLBACK_AND_CHAIN=7,
@@ -847,6 +848,10 @@ bool mysqld_show_column_types(THD *thd);
 bool mysqld_help (THD *thd, const char *text);
 void calc_sum_of_all_status(STATUS_VAR *to);
 
+void append_definer(THD *thd, String *buffer, const LEX_STRING *definer_user,
+                    const LEX_STRING *definer_host);
+
+
 /* information schema */
 extern LEX_STRING information_schema_name;
 LEX_STRING *make_lex_string(THD *thd, LEX_STRING *lex_str,

sql/share/errmsg.txt

@@ -5405,14 +5405,14 @@ ER_PS_NO_RECURSION
         eng "The prepared statement contains a stored routine call that refers to that same statement. It's not allowed to execute a prepared statement in such a recursive manner"
 ER_SP_CANT_SET_AUTOCOMMIT
 	eng "Not allowed to set autocommit from a stored function or trigger"
-ER_NO_VIEW_USER
-        eng "View definer is not fully qualified"
+ER_MALFORMED_DEFINER
+	eng "Definer is not fully qualified"
 ER_VIEW_FRM_NO_USER
         eng "View %-.64s.%-.64s has not definer information (old table format). Current user is used as definer. Please recreate view!"
 ER_VIEW_OTHER_USER
-        eng "You need the SUPER privilege for creation view with %-.64s@%-.64s definer"
+	eng "You need the SUPER privilege for creation view with %-.64s@%-.64s definer"
 ER_NO_SUCH_USER
-        eng "There is not %-.64s@%-.64s registered"
+        eng "There is no '%-.64s'@'%-.64s' registered"
 ER_FORBID_SCHEMA_CHANGE
 	eng "Changing schema from '%-.64s' to '%-.64s' is not allowed."
 ER_ROW_IS_REFERENCED_2 23000
@@ -5421,3 +5421,5 @@ ER_NO_REFERENCED_ROW_2 23000
 	eng "Cannot add or update a child row: a foreign key constraint fails (%.192s)"
 ER_SP_BAD_VAR_SHADOW 42000
 	eng "Variable '%-.64s' must be quoted with `...`, or renamed"
+ER_TRG_NO_DEFINER
+  eng "No definer attribute for trigger '%-.64s'.'%-.64s'. The trigger will be activated under the authorization of the invoker, which may have insufficient privileges. Please recreate the trigger."

sql/sp.cc

@@ -441,8 +441,8 @@ db_find_routine(THD *thd, int type, sp_name *name, sp_head **sphp)
       if (dbchanged && (ret= mysql_change_db(thd, olddb, 1)))
 	goto done;
       *sphp= thd->lex->sphead;
-      (*sphp)->set_info((char *)definer, (uint)strlen(definer),
-			created, modified, &chistics, sql_mode);
+      (*sphp)->set_definer((char*) definer, (uint) strlen(definer));
+      (*sphp)->set_info(created, modified, &chistics, sql_mode);
       (*sphp)->optimize();
     }
     thd->lex->sql_command= oldcmd;

sql/sp_head.cc

@@ -1569,21 +1569,9 @@ sp_head::check_backpatch(THD *thd)
 }
 
 void
-sp_head::set_info(char *definer, uint definerlen,
-		  longlong created, longlong modified,
+sp_head::set_info(longlong created, longlong modified,
 		  st_sp_chistics *chistics, ulong sql_mode)
 {
-  char *p= strchr(definer, '@');
-  uint len;
-
-  if (! p)
-    p= definer;		// Weird...
-  len= p-definer;
-  m_definer_user.str= strmake_root(mem_root, definer, len);
-  m_definer_user.length= len;
-  len= definerlen-len-1;
-  m_definer_host.str= strmake_root(mem_root, p+1, len);
-  m_definer_host.length= len;
   m_created= created;
   m_modified= modified;
   m_chistics= (st_sp_chistics *) memdup_root(mem_root, (char*) chistics,
@@ -1597,6 +1585,34 @@ sp_head::set_info(char *definer, uint definerlen,
   m_sql_mode= sql_mode;
 }
 
+
+void
+sp_head::set_definer(char *definer, uint definerlen)
+{
+  char *p= strrchr(definer, '@');
+
+  if (!p)
+  {
+    m_definer_user.str= strmake_root(mem_root, "", 0);
+    m_definer_user.length= 0;
+    
+    m_definer_host.str= strmake_root(mem_root, "", 0);
+    m_definer_host.length= 0;
+  }
+  else
+  {
+    const uint user_name_len= p - definer;
+    const uint host_name_len= definerlen - user_name_len - 1;
+
+    m_definer_user.str= strmake_root(mem_root, definer, user_name_len);
+    m_definer_user.length= user_name_len;
+
+    m_definer_host.str= strmake_root(mem_root, p + 1, host_name_len);
+    m_definer_host.length= host_name_len;
+  }
+}
+
+
 void
 sp_head::reset_thd_mem_root(THD *thd)
 {

sql/sp_head.h

@@ -251,10 +251,11 @@ public:
 
   Field *make_field(uint max_length, const char *name, TABLE *dummy);
 
-  void set_info(char *definer, uint definerlen,
-		longlong created, longlong modified,
+  void set_info(longlong created, longlong modified,
 		st_sp_chistics *chistics, ulong sql_mode);
 
+  void set_definer(char *definer, uint definerlen);
+
   void reset_thd_mem_root(THD *thd);
 
   void restore_thd_mem_root(THD *thd);

sql/sql_acl.cc

@@ -3532,7 +3532,7 @@ bool check_grant(THD *thd, ulong want_access, TABLE_LIST *tables,
     of other queries). For simple queries first_not_own_table is 0.
   */
   for (i= 0, table= tables;
-       table != first_not_own_table && i < number;
+       table && table != first_not_own_table && i < number;
        table= table->next_global, i++)
   {
     /* Remove SHOW_VIEW_ACL, because it will be checked during making view */

sql/sql_lex.h

@@ -737,10 +737,15 @@ typedef struct st_lex
   TABLE_LIST **query_tables_last;
   /* store original leaf_tables for INSERT SELECT and PS/SP */
   TABLE_LIST *leaf_tables_insert;
-  st_lex_user *create_view_definer;
   char *create_view_start;
   char *create_view_select_start;
 
+  /*
+    The definer of the object being created (view, trigger, stored routine).
+    I.e. the value of DEFINER clause.
+  */
+  LEX_USER *definer;
+
   List<key_part_spec> col_list;
   List<key_part_spec> ref_list;
   List<String>	      interval_list;
@@ -887,6 +892,14 @@ typedef struct st_lex
   */
   SQL_LIST trg_table_fields;
 
+  /*
+    trigger_definition_begin points to the beginning of the word "TRIGGER" in
+    CREATE TRIGGER statement. This is used to add possibly omitted DEFINER
+    clause to the trigger definition statement before dumping it to the
+    binlog. 
+  */
+  const char *trigger_definition_begin;
+
   /*
     If non-0 then indicates that query requires prelocking and points to
     next_global member of last own element in query table list (i.e. last

sql/sql_parse.cc

@@ -5062,7 +5062,7 @@ check_table_access(THD *thd, ulong want_access,TABLE_LIST *tables,
     the given table list refers to the list for prelocking (contains tables
     of other queries). For simple queries first_not_own_table is 0.
   */
-  for (; tables != first_not_own_table; tables= tables->next_global)
+  for (; tables && tables != first_not_own_table; tables= tables->next_global)
   {
     if (tables->schema_table && 
         (want_access & ~(SELECT_ACL | EXTRA_ACL | FILE_ACL)))
@@ -7466,32 +7466,81 @@ Item *negate_expression(THD *thd, Item *expr)
   return new Item_func_not(expr);
 }
 
+/*
+  Set the specified definer to the default value, which is the current user in
+  the thread. Also check that the current user satisfies to the definers
+  requirements.
+ 
+  SYNOPSIS
+    get_default_definer()
+    thd       [in] thread handler
+    definer   [out] definer
+ 
+  RETURN
+    error status, that is:
+      - FALSE -- on success;
+      - TRUE -- on error (current user can not be a definer).
+*/
+ 
+bool get_default_definer(THD *thd, LEX_USER *definer)
+{
+  /* Check that current user has non-empty host name. */
+
+  const Security_context *sctx= thd->security_ctx;
+
+  if (sctx->priv_host[0] == 0)
+  {
+    my_error(ER_MALFORMED_DEFINER, MYF(0));
+    return TRUE;
+  }
+
+  /* Fill in. */
+
+  definer->user.str= (char *) sctx->priv_user;
+  definer->user.length= strlen(definer->user.str);
+
+  definer->host.str= (char *) sctx->priv_host;
+  definer->host.length= strlen(definer->host.str);
+
+  return FALSE;
+}
+
 
 /*
-  Assign as view definer current user
+  Create definer with the given user and host names. Also check that the user
+  and host names satisfy definers requirements.
 
   SYNOPSIS
-    default_view_definer()
-    sctx		current security context
-    definer             structure where it should be assigned
+    create_definer()
+    thd         [in] thread handler
+    user_name   [in] user name
+    host_name   [in] host name
 
   RETURN
-    FALSE   OK
-    TRUE    Error
+    On success, return a valid pointer to the created and initialized
+    LEX_STRING, which contains definer information.
+    On error, return 0.
 */
 
-bool default_view_definer(Security_context *sctx, st_lex_user *definer)
+LEX_USER *create_definer(THD *thd, LEX_STRING *user_name, LEX_STRING *host_name)
 {
-  definer->user.str= sctx->priv_user;
-  definer->user.length= strlen(sctx->priv_user);
+  LEX_USER *definer;
+
+  /* Check that specified host name is valid. */
 
-  if (!*sctx->priv_host)
+  if (host_name->length == 0)
   {
-    my_error(ER_NO_VIEW_USER, MYF(0));
-    return TRUE;
+    my_error(ER_MALFORMED_DEFINER, MYF(0));
+    return 0;
   }
 
-  definer->host.str= sctx->priv_host;
-  definer->host.length= strlen(sctx->priv_host);
-  return FALSE;
+  /* Create and initialize. */
+
+  if (! (definer= (LEX_USER*) thd->alloc(sizeof (LEX_USER))))
+    return 0;
+
+  definer->user= *user_name;
+  definer->host= *host_name;
+
+  return definer;
 }

sql/sql_show.cc

@@ -1060,18 +1060,36 @@ view_store_options(THD *thd, TABLE_LIST *table, String *buff)
   default:
     DBUG_ASSERT(0); // never should happen
   }
-  buff->append("DEFINER=", 8);
-  append_identifier(thd, buff,
-                    table->definer.user.str, table->definer.user.length);
-  buff->append('@');
-  append_identifier(thd, buff,
-                    table->definer.host.str, table->definer.host.length);
+  append_definer(thd, buff, &table->definer.user, &table->definer.host);
   if (table->view_suid)
-    buff->append(" SQL SECURITY DEFINER ", 22);
+    buff->append("SQL SECURITY DEFINER ", 21);
   else
-    buff->append(" SQL SECURITY INVOKER ", 22);
+    buff->append("SQL SECURITY INVOKER ", 21);
 }
 
+
+/*
+  Append DEFINER clause to the given buffer.
+  
+  SYNOPSIS
+    append_definer()
+    thd           [in] thread handle
+    buffer        [inout] buffer to hold DEFINER clause
+    definer_user  [in] user name part of definer
+    definer_host  [in] host name part of definer
+*/
+
+void append_definer(THD *thd, String *buffer, const LEX_STRING *definer_user,
+                    const LEX_STRING *definer_host)
+{
+  buffer->append(STRING_WITH_LEN("DEFINER="));
+  append_identifier(thd, buffer, definer_user->str, definer_user->length);
+  buffer->append('@');
+  append_identifier(thd, buffer, definer_host->str, definer_host->length);
+  buffer->append(' ');
+}
+
+
 static int
 view_store_create_info(THD *thd, TABLE_LIST *table, String *buff)
 {
@@ -3094,7 +3112,8 @@ static bool store_trigger(THD *thd, TABLE *table, const char *db,
                           enum trg_event_type event,
                           enum trg_action_time_type timing,
                           LEX_STRING *trigger_stmt,
-                          ulong sql_mode)
+                          ulong sql_mode,
+                          LEX_STRING *definer_buffer)
 {
   CHARSET_INFO *cs= system_charset_info;
   byte *sql_mode_str;
@@ -3119,6 +3138,7 @@ static bool store_trigger(THD *thd, TABLE *table, const char *db,
                                                        sql_mode,
                                                        &sql_mode_len);
   table->field[17]->store((const char*)sql_mode_str, sql_mode_len, cs);
+  table->field[18]->store((const char *)definer_buffer->str, definer_buffer->length, cs);
   return schema_table_store_record(thd, table);
 }
 
@@ -3152,15 +3172,21 @@ static int get_schema_triggers_record(THD *thd, struct st_table_list *tables,
         LEX_STRING trigger_name;
         LEX_STRING trigger_stmt;
         ulong sql_mode;
+        char definer_holder[HOSTNAME_LENGTH + USERNAME_LENGTH + 2];
+        LEX_STRING definer_buffer;
+        definer_buffer.str= definer_holder;
         if (triggers->get_trigger_info(thd, (enum trg_event_type) event,
                                        (enum trg_action_time_type)timing,
                                        &trigger_name, &trigger_stmt,
-                                       &sql_mode))
+                                       &sql_mode,
+                                       &definer_buffer))
           continue;
+
         if (store_trigger(thd, table, base_name, file_name, &trigger_name,
                          (enum trg_event_type) event,
                          (enum trg_action_time_type) timing, &trigger_stmt,
-                         sql_mode))
+                         sql_mode,
+                         &definer_buffer))
           DBUG_RETURN(1);
       }
     }
@@ -4064,6 +4090,7 @@ ST_FIELD_INFO triggers_fields_info[]=
   {"ACTION_REFERENCE_NEW_ROW", 3, MYSQL_TYPE_STRING, 0, 0, 0},
   {"CREATED", 0, MYSQL_TYPE_TIMESTAMP, 0, 1, "Created"},
   {"SQL_MODE", 65535, MYSQL_TYPE_STRING, 0, 0, "sql_mode"},
+  {"DEFINER", 65535, MYSQL_TYPE_STRING, 0, 0, "Definer"},
   {0, 0, MYSQL_TYPE_STRING, 0, 0, 0}
 };
 

sql/sql_trigger.h

@@ -55,6 +55,12 @@ class Table_triggers_list: public Sql_alloc
   */
   LEX_STRING        sroutines_key;
 
+  /*
+    is_special_var_used specifies whether trigger body contains special
+    variables (NEW/OLD).
+  */
+  bool m_spec_var_used[TRG_EVENT_MAX][TRG_ACTION_MAX];
+
 public:
   /*
     Field responsible for storing triggers definitions in file.
@@ -66,6 +72,8 @@ public:
   */
   List<ulonglong> definition_modes_list;
 
+  List<LEX_STRING>  definers_list;
+
   Table_triggers_list(TABLE *table_arg):
     record1_field(0), table(table_arg)
   {
@@ -73,7 +81,9 @@ public:
   }
   ~Table_triggers_list();
 
-  bool create_trigger(THD *thd, TABLE_LIST *table);
+  bool create_trigger(THD *thd, TABLE_LIST *table,
+                      LEX_STRING *definer_user,
+                      LEX_STRING *definer_host);
   bool drop_trigger(THD *thd, TABLE_LIST *table);
   bool process_triggers(THD *thd, trg_event_type event,
                         trg_action_time_type time_type,
@@ -81,7 +91,8 @@ public:
   bool get_trigger_info(THD *thd, trg_event_type event,
                         trg_action_time_type time_type,
                         LEX_STRING *trigger_name, LEX_STRING *trigger_stmt,
-                        ulong *sql_mode);
+                        ulong *sql_mode,
+                        LEX_STRING *definer);
 
   static bool check_n_load(THD *thd, const char *db, const char *table_name,
                            TABLE *table, bool names_only);
@@ -98,6 +109,11 @@ public:
     return test(bodies[TRG_EVENT_UPDATE][TRG_ACTION_BEFORE]);
   }
 
+  inline bool is_special_var_used(int event, int action_time) const
+  {
+    return m_spec_var_used[event][action_time];
+  }
+
   void set_table(TABLE *new_table);
 
   friend class Item_trigger_field;

sql/sql_view.cc

@@ -214,29 +214,28 @@ bool mysql_create_view(THD *thd,
       - same as current user
       - current user has SUPER_ACL
   */
-  if (strcmp(lex->create_view_definer->user.str,
+  if (strcmp(lex->definer->user.str,
              thd->security_ctx->priv_user) != 0 ||
       my_strcasecmp(system_charset_info,
-                    lex->create_view_definer->host.str,
+                    lex->definer->host.str,
                     thd->security_ctx->priv_host) != 0)
   {
     if (!(thd->security_ctx->master_access & SUPER_ACL))
     {
-      my_error(ER_VIEW_OTHER_USER, MYF(0), lex->create_view_definer->user.str,
-               lex->create_view_definer->host.str);
+      my_error(ER_SPECIFIC_ACCESS_DENIED_ERROR, MYF(0), "SUPER");
       res= TRUE;
       goto err;
     }
     else
     {
-      if (!is_acl_user(lex->create_view_definer->host.str,
-                       lex->create_view_definer->user.str))
+      if (!is_acl_user(lex->definer->host.str,
+                       lex->definer->user.str))
       {
         push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_NOTE,
                             ER_NO_SUCH_USER,
                             ER(ER_NO_SUCH_USER),
-                            lex->create_view_definer->user.str,
-                            lex->create_view_definer->host.str);
+                            lex->definer->user.str,
+                            lex->definer->host.str);
       }
     }
   }
@@ -658,8 +657,8 @@ static int mysql_register_view(THD *thd, TABLE_LIST *view,
     lex->create_view_algorithm= VIEW_ALGORITHM_UNDEFINED;
   }
   view->algorithm= lex->create_view_algorithm;
-  view->definer.user= lex->create_view_definer->user;
-  view->definer.host= lex->create_view_definer->host;
+  view->definer.user= lex->definer->user;
+  view->definer.host= lex->definer->host;
   view->view_suid= lex->create_view_suid;
   view->with_check= lex->create_view_check;
   if ((view->updatable_view= (can_be_merged &&
@@ -807,7 +806,7 @@ bool mysql_make_view(THD *thd, File_parser *parser, TABLE_LIST *table)
     push_warning_printf(thd, MYSQL_ERROR::WARN_LEVEL_WARN,
                         ER_VIEW_FRM_NO_USER, ER(ER_VIEW_FRM_NO_USER),
                         table->db, table->table_name);
-    if (default_view_definer(thd->security_ctx, &table->definer))
+    if (get_default_definer(thd, &table->definer))
       goto err;
   }