Bug#41049 does syntax "grant" case insensitive?

Problem 1:
column_priv_hash uses utf8_general_ci collation
for the key comparison. The key consists of user name,
db name and table name. Thus user with privileges on table t1
is able to perform the same operation on T1
(the similar situation with user name & db name, see acl_cache).
So collation which is used for column_priv_hash and acl_cache
should be case sensitive.
The fix:
replace system_charset_info with my_charset_utf8_bin for
column_priv_hash and acl_cache
Problem 2:
The same situation with proc_priv_hash, func_priv_hash,
the only difference is that Routine name is case insensitive.
So the fix is to use my_charset_utf8_bin for
proc_priv_hash & func_priv_hash and convert routine name into lower
case before writing the element into the hash and
before looking up the key.
Additional fix: mysql.procs_priv Routine_name field collation
is changed to utf8_general_ci.
It's necessary for REVOKE command
(to find a field by routine hash element values).
Note: 
It's safe for lower-case-table-names mode too because
db name & table name are converted into lower case
(see GRANT_NAME::GRANT_NAME).


mysql-test/include/have_case_insensitive_fs.inc:
  test case
mysql-test/r/case_insensitive_fs.require:
  test case
mysql-test/r/grant_lowercase_fs.result:
  test result
mysql-test/r/lowercase_fs_off.result:
  test result
mysql-test/r/ps_grant.result:
  test result
mysql-test/r/system_mysql_db.result:
  changed Routine_name field collation to case insensitive
mysql-test/t/grant_lowercase_fs.test:
  test case
mysql-test/t/lowercase_fs_off.test:
  test case
scripts/mysql_system_tables.sql:
  changed Routine_name field collation to case insensitive
scripts/mysql_system_tables_fix.sql:
  changed Routine_name field collation to case insensitive
sql/sql_acl.cc:
  Problem 1:
  column_priv_hash uses utf8_general_ci collation
  for the key comparison. The key consists of user name,
  db name and table name. Thus user with privileges on table t1
  is able to perform the same operation on T1
  (the similar situation with user name & db name, see acl_cache).
  So collation which is used for column_priv_hash and acl_cache
  should be case sensitive.
  The fix:
  replace system_charset_info with my_charset_utf8_bin for
  column_priv_hash and acl_cache
  Problem 2:
  The same situation with proc_priv_hash, func_priv_hash,
  the only difference is that Routine name is case insensitive.
  So the fix is to use my_charset_utf8_bin for
  proc_priv_hash & func_priv_hash and convert routine name into lower
  case before writing the element into the hash and
  before looking up the key.
  Additional fix: mysql.procs_priv Routine_name field collation
  is changed to utf8_general_ci.
  It's necessary for REVOKE command
  (to find a field by routine hash element values).
  Note: 
  It's safe for lower-case-table-names mode too because
  db name & table name are converted into lower case
  (see GRANT_NAME::GRANT_NAME).

2 files changed, 5 insertions, 1 deletions

diff --git a/scripts/mysql_system_tables.sql b/scripts/mysql_system_tables.sql
index 31eb205eed0..aca87b01bc3 100644
--- a/scripts/mysql_system_tables.sql
+++ b/scripts/mysql_system_tables.sql
@@ -57,5 +57,5 @@ CREATE TABLE IF NOT EXISTS time_zone_leap_second (   Transition_time bigint sign
 CREATE TABLE IF NOT EXISTS proc ( db char(64) collate utf8_bin DEFAULT '' NOT NULL, name  char(64) DEFAULT '' NOT NULL, type  enum('FUNCTION','PROCEDURE') NOT NULL, specific_name char(64) DEFAULT '' NOT NULL, language  enum('SQL') DEFAULT 'SQL' NOT NULL, sql_data_access enum('CONTAINS_SQL', 'NO_SQL', 'READS_SQL_DATA', 'MODIFIES_SQL_DATA' ) DEFAULT 'CONTAINS_SQL' NOT NULL, is_deterministic  enum('YES','NO') DEFAULT 'NO' NOT NULL, security_type enum('INVOKER','DEFINER') DEFAULT 'DEFINER' NOT NULL, param_list  blob NOT NULL, returns char(64) DEFAULT '' NOT NULL, body  longblob NOT NULL, definer char(77) collate utf8_bin DEFAULT '' NOT NULL, created timestamp, modified timestamp, sql_mode set( 'REAL_AS_FLOAT', 'PIPES_AS_CONCAT', 'ANSI_QUOTES', 'IGNORE_SPACE', 'NOT_USED', 'ONLY_FULL_GROUP_BY', 'NO_UNSIGNED_SUBTRACTION', 'NO_DIR_IN_CREATE', 'POSTGRESQL', 'ORACLE', 'MSSQL', 'DB2', 'MAXDB', 'NO_KEY_OPTIONS', 'NO_TABLE_OPTIONS', 'NO_FIELD_OPTIONS', 'MYSQL323', 'MYSQL40', 'ANSI', 'NO_AUTO_VALUE_ON_ZERO', 'NO_BACKSLASH_ESCAPES', 'STRICT_TRANS_TABLES', 'STRICT_ALL_TABLES', 'NO_ZERO_IN_DATE', 'NO_ZERO_DATE', 'INVALID_DATES', 'ERROR_FOR_DIVISION_BY_ZERO', 'TRADITIONAL', 'NO_AUTO_CREATE_USER', 'HIGH_NOT_PRECEDENCE' ) DEFAULT '' NOT NULL, comment char(64) collate utf8_bin DEFAULT '' NOT NULL, PRIMARY KEY (db,name,type) ) engine=MyISAM character set utf8 comment='Stored Procedures';
 
 
-CREATE TABLE IF NOT EXISTS procs_priv ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Routine_name char(64) binary DEFAULT '' NOT NULL, Routine_type enum('FUNCTION','PROCEDURE') NOT NULL, Grantor char(77) DEFAULT '' NOT NULL, Proc_priv set('Execute','Alter Routine','Grant') COLLATE utf8_general_ci DEFAULT '' NOT NULL, Timestamp timestamp(14), PRIMARY KEY (Host,Db,User,Routine_name,Routine_type), KEY Grantor (Grantor) ) engine=MyISAM CHARACTER SET utf8 COLLATE utf8_bin   comment='Procedure privileges';
+CREATE TABLE IF NOT EXISTS procs_priv ( Host char(60) binary DEFAULT '' NOT NULL, Db char(64) binary DEFAULT '' NOT NULL, User char(16) binary DEFAULT '' NOT NULL, Routine_name char(64) COLLATE utf8_general_ci DEFAULT '' NOT NULL, Routine_type enum('FUNCTION','PROCEDURE') NOT NULL, Grantor char(77) DEFAULT '' NOT NULL, Proc_priv set('Execute','Alter Routine','Grant') COLLATE utf8_general_ci DEFAULT '' NOT NULL, Timestamp timestamp(14), PRIMARY KEY (Host,Db,User,Routine_name,Routine_type), KEY Grantor (Grantor) ) engine=MyISAM CHARACTER SET utf8 COLLATE utf8_bin   comment='Procedure privileges';
 
diff --git a/scripts/mysql_system_tables_fix.sql b/scripts/mysql_system_tables_fix.sql
index c8334339b32..cfd03b7c45d 100644
--- a/scripts/mysql_system_tables_fix.sql
+++ b/scripts/mysql_system_tables_fix.sql
@@ -323,6 +323,10 @@ ALTER TABLE procs_priv
   MODIFY Proc_priv set('Execute','Alter Routine','Grant')
     COLLATE utf8_general_ci DEFAULT '' NOT NULL;
 
+ALTER IGNORE TABLE procs_priv
+  MODIFY Routine_name char(64)
+    COLLATE utf8_general_ci DEFAULT '' NOT NULL;
+
 ALTER TABLE procs_priv
   ADD Routine_type enum('FUNCTION','PROCEDURE')
     COLLATE utf8_general_ci NOT NULL AFTER Routine_name;