1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#
# MDEV-4332 Increase username length from 16 characters
#
# user names here have the pattern
# <letter><length><more letters>0
# where '0' at the end is the end-of-name marker
--source include/not_embedded.inc
--enable_metadata
select user();
--disable_metadata
--error ER_WRONG_STRING_LENGTH
create user a17aaaaaaaaaaaaa0@localhost;
alter table mysql.user modify User char(80) binary not null default '';
alter table mysql.db modify User char(80) binary not null default '';
alter table mysql.tables_priv modify User char(80) binary not null default '';
alter table mysql.columns_priv modify User char(80) binary not null default '';
alter table mysql.procs_priv modify User char(80) binary not null default '';
alter table mysql.proc modify definer char(141) collate utf8_bin not null default '';
alter table mysql.event modify definer char(141) collate utf8_bin not null default '';
--source include/restart_mysqld.inc
set global event_scheduler = on;
--enable_metadata
select user();
--disable_metadata
create user a17aaaaaaaaaaaaa0@localhost;
grant usage on *.* to a17aaaaaaaaaaaaa0@localhost;
grant select on mysql.user to b64bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb0@localhost;
grant select(User) on mysql.tables_priv to c80cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc0@localhost;
connect (a17,localhost,a17aaaaaaaaaaaaa0,,);
connect (b64,localhost,b64bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb0,,);
connect (c80,localhost,c80cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc0,,);
connection a17;
select user(), current_user();
show grants;
connection b64;
select user(), current_user();
show grants;
select user,host from mysql.user where user like '%0';
--error ER_TABLEACCESS_DENIED_ERROR
select user,host from mysql.db;
connection c80;
select user(), current_user();
show grants;
select user from mysql.tables_priv;
--error ER_COLUMNACCESS_DENIED_ERROR
select user,host from mysql.tables_priv;
create procedure test.p1() select user(), current_user(), user from mysql.tables_priv;
show create procedure test.p1;
create table test.t1 (a text);
create event e1 on schedule every 1 second
do insert test.t1 values (concat(user(), ' ', current_user()));
connection default;
call test.p1();
disconnect a17;
disconnect b64;
disconnect c80;
let $wait_timeout= 10;
let $wait_condition= SELECT 1 from t1;
--source include/wait_condition.inc
select * from t1 limit 1;
--error ER_WRONG_STRING_LENGTH
grant usage on *.* to d81ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd0@lodalhost;
--error ER_WRONG_STRING_LENGTH
drop user d81ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd0@lodalhost;
drop user c80cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc0@localhost;
drop user b64bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb0@localhost;
drop user a17aaaaaaaaaaaaa0@localhost;
set global event_scheduler = off;
drop event e1;
drop procedure test.p1;
drop table t1;
alter table mysql.user modify User char(16) binary not null default '';
alter table mysql.db modify User char(16) binary not null default '';
alter table mysql.tables_priv modify User char(16) binary not null default '';
alter table mysql.columns_priv modify User char(16) binary not null default '';
alter table mysql.procs_priv modify User char(16) binary not null default '';
alter table mysql.proc modify definer char(77) collate utf8_bin not null default '';
alter table mysql.event modify definer char(77) collate utf8_bin not null default '';
flush privileges;
--enable_metadata
select user();
--disable_metadata
|
