#
# Test some grants with sequences
# Note that replication.test also does some grant testing
#

# Grant tests not performed with embedded server
-- source include/not_embedded.inc


SET @@SQL_MODE = REPLACE(@@SQL_MODE, 'NO_AUTO_CREATE_USER', '');
create database mysqltest_1;
use mysqltest_1;
grant all on mysqltest_1.* to 'normal'@'%';
grant select on mysqltest_1.* to 'read_only'@'%';
grant select,insert on mysqltest_1.* to 'read_write'@'%';
grant select,insert,alter on mysqltest_1.* to 'alter'@'%';
grant alter on mysqltest_1.* to only_alter@'%';

connect(normal,localhost,normal,,mysqltest_1);
connect(read_only,localhost,read_only,,mysqltest_1);
connect(read_write,localhost,read_write,,mysqltest_1);
connect(alter,localhost,alter,,mysqltest_1);
connect(only_alter, localhost, only_alter,,mysqltest_1);

--disable_ps2_protocol
connection normal;
create sequence s1;
select next value for s1;
alter sequence s1 restart= 11;
select * from s1;

connection read_only;
--error ER_TABLEACCESS_DENIED_ERROR
select next value for s1;
--error ER_TABLEACCESS_DENIED_ERROR
alter sequence s1 restart= 11;
select * from s1;

connection read_write;
select next value for s1;
--error ER_TABLEACCESS_DENIED_ERROR
alter sequence s1 restart= 11;
select * from s1;

connection alter;
select next value for s1;
alter sequence s1 restart= 11;
select * from s1;

connection only_alter;
--error ER_TABLEACCESS_DENIED_ERROR
select next value for s1;
alter sequence s1 restart= 11;
--error ER_TABLEACCESS_DENIED_ERROR
select * from s1;
--enable_ps2_protocol

#
# Cleanup
#

connection default;
disconnect normal;
disconnect read_only;
disconnect read_write;
disconnect alter;
disconnect only_alter;
drop user 'normal'@'%';
drop user 'read_only'@'%';
drop user 'read_write'@'%';
drop user 'alter'@'%';
drop user 'only_alter'@'%';
drop sequence s1;

--echo #
--echo # MDEV-36413  User without any privileges to a sequence can read from
--echo # it and modify it via column default
--echo #

create sequence s1;
create sequence s2;
select * from s2;
create table t2 (a int not null default(nextval(s1)));
insert into t2 values();

create user u;
grant create, insert, select, drop on mysqltest_1.t1 to u;
grant insert, select on mysqltest_1.s1 to u;
grant select on mysqltest_1.t2 to u;

--connect(con1,localhost,u,,mysqltest_1)
--error ER_TABLEACCESS_DENIED_ERROR
select nextval(s2);
--error ER_TABLEACCESS_DENIED_ERROR
show create sequence s2;

create table t1 (a int not null default(nextval(s1)));
drop table t1;
create table t1 (a int not null default(nextval(s1))) select a from t2;
insert into t1 values();
select * from t1;
drop table t1;
create table t1 (a int not null default(nextval(s1))) select a from (select t2.a from t2,t2 as t3 where t2.a=t3.a) as t4;
drop table t1;
--error ER_TABLEACCESS_DENIED_ERROR
create table t1 (a int not null default(nextval(s2)));
--error ER_TABLEACCESS_DENIED_ERROR
create table t1 (a int not null default(nextval(s1)),
                 b int not null default(nextval(s2)));
--disconnect con1
--connection default
drop user u;

# ALTER for table with DEFAULT NEXTVAL(seq) column needs INSERT/SELECT on seq
# just like CREATE does in the example above
create user u_alter;
create table t1 (id int);
grant alter on t1 to u_alter;
--connect(con_alter,localhost,u_alter,,mysqltest_1)
--error ER_TABLEACCESS_DENIED_ERROR
alter table t1 modify id int default nextval(s1);
--connection default
grant insert, select on s1 to u_alter;
--connection con_alter
alter table t1 modify id int default nextval(s1);
--disconnect con_alter
--connection default
drop user u_alter;
drop database mysqltest_1;

--echo #
--echo # MDEV-36870 Spurious unrelated permission error when selecting from table with default that uses nextval(sequence)
--echo #

# various tests for permission checking on sequences
create database db1;
use db1;
create sequence s1 cache 0;
create table t1 (id int unsigned default (10+nextval(s1)));
insert t1 values ();

create table t2 (id int unsigned default nextval(s1), b int default(default(id)));
insert t2 values ();

# INSERT affects prelocking, but is never actually executed
delimiter |;
create function f1(x int) returns int sql security invoker
begin
  select id+x into x from t1;
  return x;
  insert t1 values ();
end|
delimiter ;|

create user u1@localhost;
grant select on db1.* to u1@localhost;
grant execute on db1.* to u1@localhost;
grant all privileges on test.* to u1@localhost;

use test;
create table t3 (id int unsigned default (20+nextval(db1.s1)), b int);
insert t3 values ();

create sequence s2 cache 0;
create table t4 (id int unsigned default (10+nextval(s2)), b int);
insert t4 values ();

connect u1,localhost,u1,,db1;

# table already in the cache. must be re-fixed
# SELECT * - no error
select * from t1;

# not in cache
connection default;
flush tables;
connection u1;
# SELECT * - no error
select * from t1;

# SELECT DEFAULT() - error
--error ER_TABLEACCESS_DENIED_ERROR
select default(id) from t1;

# default(default(nextval))
select * from t2;

# SELECT but table has TL_WRITE because of prelocking
select f1(100);

# opening the table for I_S
select column_name, data_type, column_default from information_schema.columns where table_schema='db1' and table_name='t1';

use test;
# insert
--error ER_TABLEACCESS_DENIED_ERROR
insert t3 values ();
insert t4 values ();
#insert select
--error ER_TABLEACCESS_DENIED_ERROR
insert t3 (b) select 5;
insert t4 (b) select 5;
#update
--error ER_TABLEACCESS_DENIED_ERROR
update t3 set id=default;
update t4 set id=default;

# PS UPDATE with ? = DEFAULT
prepare stmt from "update t3 set id=?";
--error ER_TABLEACCESS_DENIED_ERROR
execute stmt using default;
prepare stmt from "update t4 set id=?";
execute stmt using default;
deallocate prepare stmt;

# SELECT * in a subquery, like INSERT t3 VALUES ((SELECT * FROM t1));
#   with sequences both on t3 and t1
insert t4 (b) values ((select * from db1.t1));
--error ER_TABLEACCESS_DENIED_ERROR
insert t4 (b) values ((select default(id) from db1.t1));

connection default;
disconnect u1;
--disable_ps2_protocol
select nextval(db1.s1) as 'must be 5';
--enable_ps2_protocol
drop user u1@localhost;
drop database db1;
drop table t3, t4, s2;

--echo # End of 10.6 tests