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Bug#20543 select on information_schema strange warnings, view, different schemas/users

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The fix is: if user has privileges to view fields and user has any
(insert,select,delete,update) privileges on underlying view 
then 'show fields' and select from I_S.COLUMNS table are sucsessful.


mysql-test/r/information_schema_db.result:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  test result
mysql-test/t/information_schema_db.test:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  test case
sql/sql_acl.cc:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  checked that user has privileges on underlying view and if it's true
  set allowed_show to true for top view.
sql/sql_show.cc:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  removed unnecessary rights check.'tables->allowed_show' check is used instead
sql/sql_view.cc:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  skip the check of SHOW_VIEW_ACL privilege on underlying view. It is done later during
  execution of find_field_in_table_ref function.
sql/table.h:
  Bug#20543 select on information_schema strange warnings, view, different schemas/users
  'allowed_show' is set during rights check for view. If true then user has privileges 
  for 'show create view', etc
This commit is contained in:
unknown 2006-07-25 17:23:25 +05:00
commit 9955388a45
6 changed files with 127 additions and 21 deletions
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56
mysql-test/t/information_schema_db.test
View file

@ -98,3 +98,59 @@ where table_schema='test';
drop function f1;
drop function f2;
drop view v1, v2;
#
# Bug#20543: select on information_schema strange warnings, view, different
# schemas/users
#
#
create database testdb_1;
create user testdb_1@localhost;
grant all on testdb_1.* to testdb_1@localhost with grant option;
create user testdb_2@localhost;
grant all on test.* to testdb_2@localhost with grant option;
connect (testdb_1,localhost,testdb_1,,test);
use testdb_1;
create table t1 (f1 char(4));
create view v1 as select f1 from t1;
grant insert on v1 to testdb_2@localhost;
create table t3 (f1 char(4), f2 char(4));
create view v3 as select f1,f2 from t3;
grant insert(f1), insert(f2) on v3 to testdb_2@localhost;
connect (testdb_2,localhost,testdb_2,,test);
create view v2 as select f1 from testdb_1.v1;
create view v4 as select f1,f2 from testdb_1.v3;
connection testdb_1;
revoke insert(f1) on v3 from testdb_2@localhost;
connection testdb_2;
--error 1345
show create view v4;
--error 1345
show fields from v4;
show fields from v2;
show fields from testdb_1.v1;
show create view v2;
--error 1142
show create view testdb_1.v1;
select table_name from information_schema.columns a
where a.table_name = 'v2';
select view_definition from information_schema.views a
where a.table_name = 'v2';
select view_definition from information_schema.views a
where a.table_name = 'testdb_1.v1';
--error 1356
select * from v2;
connection default;
drop view testdb_1.v1,v2, testdb_1.v3, v4;
drop database testdb_1;
drop user testdb_1@localhost;