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, 101 insertions, 0 deletions

diff --git a/mysql-test/t/sp-security.test b/mysql-test/t/sp-security.test
index 19f94a32d9c..b466d2125d4 100644
--- a/mysql-test/t/sp-security.test
+++ b/mysql-test/t/sp-security.test
@@ -547,4 +547,105 @@ GRANT EXECUTE ON PROCEDURE p1 TO user_bug7787@localhost;
 DROP DATABASE db_bug7787;
 use test;
 
+
+#
+# WL#2897: Complete definer support in the stored routines.
+#
+# The following cases are tested:
+#   1. check that if DEFINER-clause is not explicitly specified, stored routines
+#     are created with CURRENT_USER privileges;
+#   2. check that if DEFINER-clause specifies non-current user, SUPER privilege
+#     is required to create a stored routine;
+#   3. check that if DEFINER-clause specifies non-existent user, a warning is
+#     emitted.
+#   4. check that SHOW CREATE PROCEDURE | FUNCTION works correctly;
+#
+# The following cases are tested in other test suites:
+#   - check that mysqldump dumps new attribute correctly;
+#   - check that slave replicates CREATE-statements with explicitly specified
+#     DEFINER correctly.
+#
+
+# Setup the environment.
+
+--echo
+--echo ---> connection: root
+--connection con1root
+
+--disable_warnings
+DROP DATABASE IF EXISTS mysqltest;
+--enable_warnings
+
+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;
+
+--connect (mysqltest_2_con,localhost,mysqltest_2,,mysqltest)
+--connect (mysqltest_1_con,localhost,mysqltest_1,,mysqltest)
+
+# test case (1).
+
+--echo
+--echo ---> connection: mysqltest_2_con
+--connection mysqltest_2_con
+
+use mysqltest;
+
+CREATE PROCEDURE wl2897_p1() SELECT 1;
+
+CREATE FUNCTION wl2897_f1() RETURNS INT RETURN 1;
+
+# test case (2).
+
+--echo
+--echo ---> connection: mysqltest_1_con
+--connection mysqltest_1_con
+
+use mysqltest;
+
+--error ER_SPECIFIC_ACCESS_DENIED_ERROR
+CREATE DEFINER=root@localhost PROCEDURE wl2897_p2() SELECT 2;
+
+--error ER_SPECIFIC_ACCESS_DENIED_ERROR
+CREATE DEFINER=root@localhost FUNCTION wl2897_f2() RETURNS INT RETURN 2;
+
+# test case (3).
+
+--echo
+--echo ---> connection: mysqltest_2_con
+--connection mysqltest_2_con
+
+use mysqltest;
+
+CREATE DEFINER='a @ b @ c'@localhost PROCEDURE wl2897_p3() SELECT 3;
+
+CREATE DEFINER='a @ b @ c'@localhost FUNCTION wl2897_f3() RETURNS INT RETURN 3;
+
+# test case (4).
+
+--echo
+--echo ---> connection: con1root
+--connection con1root
+
+use mysqltest;
+
+SHOW CREATE PROCEDURE wl2897_p1;
+SHOW CREATE PROCEDURE wl2897_p3;
+
+SHOW CREATE FUNCTION wl2897_f1;
+SHOW CREATE FUNCTION wl2897_f3;
+
+# Cleanup.
+
+DROP USER mysqltest_1@localhost;
+DROP USER mysqltest_2@localhost;
+
+DROP DATABASE mysqltest;
+
+
 # End of 5.0 bugs.