Fixed BUG#14256: definer in view definition is not fully qualified

  Changed the parser test for wildcards in hostname to checking for empty
  strings instead (analogous with the test in default_view_definer()),
  since wildcards do appear in the definer's host-part sometimes.

mysql-test/r/view.result

@@ -2198,7 +2198,7 @@ r_object_id	users_names
 120001a080000542	guser02
 drop view v1, v2;
 drop table t1, t2;
-create definer=some_user@__% sql security invoker view v1 as select 1;
+create definer=some_user@`` sql security invoker view v1 as select 1;
 ERROR HY000: View definer is not fully qualified
 create definer=some_user@localhost sql security invoker view v1 as select 1;
 Warnings:

mysql-test/r/view_grant.result

@@ -307,3 +307,30 @@ use mysqltest;
 create view v1 as select * from t1;
 revoke all privileges on mysqltest.* from mysqltest_1@localhost;
 drop database mysqltest;
+drop view if exists v1;
+create table t1 as select * from mysql.user where user='';
+delete from mysql.user where user='';
+flush privileges;
+grant all on test.* to 'test14256'@'%';
+use test;
+create view v1 as select 42;
+show create view v1;
+View	Create View
+v1	CREATE ALGORITHM=UNDEFINED DEFINER=`test14256`@`%` SQL SECURITY DEFINER VIEW `v1` AS select 42 AS `42`
+select definer into @v1def1 from information_schema.views
+where table_schema = 'test' and table_name='v1';
+drop view v1;
+create definer=`test14256`@`%` view v1 as select 42;
+show create view v1;
+View	Create View
+v1	CREATE ALGORITHM=UNDEFINED DEFINER=`test14256`@`%` SQL SECURITY DEFINER VIEW `v1` AS select 42 AS `42`
+select definer into @v1def2 from information_schema.views
+where table_schema = 'test' and table_name='v1';
+drop view v1;
+select @v1def1, @v1def2, @v1def1=@v1def2;
+@v1def1	@v1def2	@v1def1=@v1def2
+test14256@%	test14256@%	1
+drop user test14256;
+insert into mysql.user select * from t1;
+flush privileges;
+drop table t1;

mysql-test/t/view.test

@@ -2082,7 +2082,7 @@ drop table t1, t2;
 # DEFINER information check
 #
 -- error ER_NO_VIEW_USER
-create definer=some_user@__% sql security invoker view v1 as select 1;
+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;
 drop view v1;

mysql-test/t/view_grant.test

@@ -406,3 +406,48 @@ connection root;
 revoke all privileges on mysqltest.* from mysqltest_1@localhost;
 drop database mysqltest;
 
+
+#
+# BUG#14256: definer in view definition is not fully qualified
+#
+--disable_warnings
+drop view if exists v1;
+--enable_warnings
+
+# Backup anonymous users and remove them. (They get in the way of
+# the one we test with here otherwise.)
+create table t1 as select * from mysql.user where user='';
+delete from mysql.user where user='';
+flush privileges;
+
+# Create the test user
+grant all on test.* to 'test14256'@'%';
+
+connect (test14256,localhost,test14256,,test);
+connection test14256;
+use test;
+
+create view v1 as select 42;
+show create view v1;
+
+select definer into @v1def1 from information_schema.views
+  where table_schema = 'test' and table_name='v1';
+drop view v1;
+
+create definer=`test14256`@`%` view v1 as select 42;
+show create view v1;
+
+select definer into @v1def2 from information_schema.views
+  where table_schema = 'test' and table_name='v1';
+drop view v1;
+
+select @v1def1, @v1def2, @v1def1=@v1def2;
+
+connection root;
+drop user test14256;
+
+# Restore the anonymous users.
+insert into mysql.user select * from t1;
+flush privileges;
+
+drop table t1;

sql/sql_yacc.yy

@@ -9026,8 +9026,7 @@ view_user:
                   (LEX_USER*) thd->alloc(sizeof(st_lex_user))))
 	      YYABORT;
 	    view_user->user = $3; view_user->host=$5;
-            if (strchr(view_user->host.str, wild_many) ||
-                strchr(view_user->host.str, wild_one))
+            if (view_user->host.length == 0)
             {
               my_error(ER_NO_VIEW_USER, MYF(0));
               YYABORT;