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MDEV-5238 Server crashes in find_role_grant_pair on SHOW GRANTS for an anonymous user

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This commit is contained in:
Sergei Golubchik
2013-11-10 17:50:52 +01:00
parent ab2bf1ad0b
commit 09b63917be
3 changed files with 30 additions and 1 deletions
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12
mysql-test/suite/roles/show_grants_anon-5238.result Normal file
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@ -0,0 +1,12 @@
create user ''@localhost;
create role r1;
grant r1 to ''@localhost;
select current_user;
current_user
@localhost
show grants;
Grants for @localhost
GRANT r1 TO ''@'localhost'
GRANT USAGE ON *.* TO ''@'localhost'
drop role r1;
drop user ''@localhost;

17
mysql-test/suite/roles/show_grants_anon-5238.test Normal file
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@ -0,0 +1,17 @@
#
# MDEV-5238 Server crashes in find_role_grant_pair on SHOW GRANTS for an anonymous user
#
--source include/not_embedded.inc
create user ''@localhost;
create role r1;
grant r1 to ''@localhost;
--connect (con1,localhost,nonexisting_user,,)
select current_user;
show grants;
connection default;
drop role r1;
drop user ''@localhost;

2
sql/sql_acl.cc
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@ -7556,7 +7556,7 @@ static ROLE_GRANT_PAIR *find_role_grant_pair(const LEX_STRING *u,
pair_key.alloc(key_length); pair_key.alloc(key_length);
strmov(strmov(strmov(const_cast<char*>(pair_key.ptr()), strmov(strmov(strmov(const_cast<char*>(pair_key.ptr()),
u->str) + 1, h->str) + 1, r->str); safe_str(u->str)) + 1, h->str) + 1, r->str);
return (ROLE_GRANT_PAIR *) return (ROLE_GRANT_PAIR *)
my_hash_search(&acl_roles_mappings, (uchar*)pair_key.ptr(), key_length); my_hash_search(&acl_roles_mappings, (uchar*)pair_key.ptr(), key_length);