Implementation of WL#2897: Complete definer support in the stored routines.

The idea is to add DEFINER-clause in CREATE PROCEDURE and CREATE FUNCTION
statements. Almost all support of definer in stored routines had been already
done before this patch.

NOTE: this patch changes behaviour of dumping stored routines in mysqldump.
Before this patch, mysqldump did not dump DEFINER-clause for stored routines
and this was documented behaviour. In order to get full information about stored
routines, one should have dumped mysql.proc table. This patch changes this
behaviour, so that DEFINER-clause is dumped.

Since DEFINER-clause is not supported in CREATE PROCEDURE | FUNCTION statements
before this patch, the clause is covered by additional version-specific comments.


client/mysqldump.c:
  Updated the code for dumping stored routines: cover DEFINER-clause
  into version-specific comment.
mysql-test/r/gis.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/information_schema.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/mysqldump.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/rpl_ddl.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/rpl_sp.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/rpl_trigger.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/sp-security.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/sp.result:
  Updated result file after adding DEFINER-clause.
mysql-test/r/sql_mode.result:
  Updated result file after adding DEFINER-clause.
mysql-test/t/sp-security.test:
  Updated result file after adding DEFINER-clause.
sql/sp.cc:
  Added DEFINER-clause.
sql/sp_head.cc:
  Added a new convenient variant of set_definer() operation.
sql/sp_head.h:
  Updated result file after adding DEFINER-clause.
sql/sql_lex.h:
  Renamed trigger_definition_begin into stmt_definition_begin to be used for
  triggers and stored routines.
sql/sql_parse.cc:
  Check DEFINER-clause.
sql/sql_trigger.cc:
  Renamed trigger_definition_begin into stmt_definition_begin to be used for
  triggers and stored routines.
sql/sql_yacc.yy:
  Added DEFINER-clause.

1 files changed, 52 insertions, 0 deletions

diff --git a/mysql-test/r/sp-security.result b/mysql-test/r/sp-security.result
index d8abc387677..90466bfcfc4 100644
--- a/mysql-test/r/sp-security.result
+++ b/mysql-test/r/sp-security.result
@@ -323,3 +323,55 @@ Warning	1287	'SHOW INNODB STATUS' is deprecated; use 'SHOW ENGINE INNODB STATUS'
 GRANT EXECUTE ON PROCEDURE p1 TO user_bug7787@localhost;
 DROP DATABASE db_bug7787;
 use test;
+
+---> connection: root
+DROP DATABASE IF EXISTS mysqltest;
+CREATE DATABASE mysqltest;
+CREATE USER mysqltest_1@localhost;
+GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_1@localhost;
+CREATE USER mysqltest_2@localhost;
+GRANT SUPER ON *.* TO mysqltest_2@localhost;
+GRANT ALL PRIVILEGES ON mysqltest.* TO mysqltest_2@localhost;
+
+---> connection: mysqltest_2_con
+use mysqltest;
+CREATE PROCEDURE wl2897_p1() SELECT 1;
+CREATE FUNCTION wl2897_f1() RETURNS INT RETURN 1;
+
+---> connection: mysqltest_1_con
+use mysqltest;
+CREATE DEFINER=root@localhost PROCEDURE wl2897_p2() SELECT 2;
+ERROR 42000: Access denied; you need the SUPER privilege for this operation
+CREATE DEFINER=root@localhost FUNCTION wl2897_f2() RETURNS INT RETURN 2;
+ERROR 42000: Access denied; you need the SUPER privilege for this operation
+
+---> connection: mysqltest_2_con
+use mysqltest;
+CREATE DEFINER='a @ b @ c'@localhost PROCEDURE wl2897_p3() SELECT 3;
+Warnings:
+Note	1449	There is no 'a @ b @ c'@'localhost' registered
+CREATE DEFINER='a @ b @ c'@localhost FUNCTION wl2897_f3() RETURNS INT RETURN 3;
+Warnings:
+Note	1449	There is no 'a @ b @ c'@'localhost' registered
+
+---> connection: con1root
+use mysqltest;
+SHOW CREATE PROCEDURE wl2897_p1;
+Procedure	sql_mode	Create Procedure
+wl2897_p1		CREATE DEFINER=`mysqltest_2`@`localhost` PROCEDURE `wl2897_p1`()
+SELECT 1
+SHOW CREATE PROCEDURE wl2897_p3;
+Procedure	sql_mode	Create Procedure
+wl2897_p3		CREATE DEFINER=`a @ b @ c`@`localhost` PROCEDURE `wl2897_p3`()
+SELECT 3
+SHOW CREATE FUNCTION wl2897_f1;
+Function	sql_mode	Create Function
+wl2897_f1		CREATE DEFINER=`mysqltest_2`@`localhost` FUNCTION `wl2897_f1`() RETURNS int(11)
+RETURN 1
+SHOW CREATE FUNCTION wl2897_f3;
+Function	sql_mode	Create Function
+wl2897_f3		CREATE DEFINER=`a @ b @ c`@`localhost` FUNCTION `wl2897_f3`() RETURNS int(11)
+RETURN 3
+DROP USER mysqltest_1@localhost;
+DROP USER mysqltest_2@localhost;
+DROP DATABASE mysqltest;