Manul merge

mysql-test/include/diff_tables.inc

@@ -65,17 +65,13 @@ let $_diff_table=$diff_table_2;
 let $_diff_i=2;
 while ($_diff_i) {
 
-  # Parse out any leading "master:" or "slave:" from the table
-  # specification and connect the appropriate server.
-  let $_diff_conn_master=`SELECT SUBSTR('$_diff_table', 1, 7) = 'master:'`;
-  if ($_diff_conn_master) {
-    let $_diff_table=`SELECT SUBSTR('$_diff_table', 8)`;
-    connection master;
-  }
-  let $_diff_conn_slave=`SELECT SUBSTR('$_diff_table', 1, 6) = 'slave:'`;
-  if ($_diff_conn_slave) {
-    let $_diff_table=`SELECT SUBSTR('$_diff_table', 7)`;
-    connection slave;
+  # Parse out any leading "master:" or "slave:" from the table specification
+# and connect the appropriate server.
+  let $_pos= `SELECT LOCATE(':', '$_diff_table')`;
+  let $_diff_conn=`SELECT SUBSTR('$_diff_table', 1, $_pos-1)`;
+  if (`SELECT "XX$_diff_conn" <> "XX"`) {
+    let $_diff_table=`SELECT SUBSTR('$_diff_table', $_pos+1)`;
+    connection $_diff_conn;
   }
 
   # Sanity-check the input.

mysql-test/include/rpl_diff_tables.inc

+# #############################################################################
+# Check whether the given table is consistent between different master and
+# slaves
+#
+# Usage: 
+# --let $diff_table= test.t1 
+# --let $diff_server_list= master, slave, slave2 
+# --source include/rpl_diff_tables.inc
+# #############################################################################
+
+if (`SELECT "XX$diff_table" = "XX"`)
+{
+  --die diff_table is null.
+}
+
+--let $_servers= master, slave
+if (`SELECT "XX$diff_server_list" <> "XX"`)
+{
+  --let $_servers= $diff_server_list
+}
+
+--let $_master= `SELECT SUBSTRING_INDEX('$_servers', ',', 1)`
+--let $_servers= `SELECT LTRIM(SUBSTRING('$_servers', LENGTH('$_master') + 2))`
+connection $_master;
+while (`SELECT "XX$_servers" <> "XX"`)
+{
+  --let $_slave= `SELECT SUBSTRING_INDEX('$_servers', ',', 1)`
+  --let $_servers= `SELECT LTRIM(SUBSTRING('$_servers', LENGTH('$_slave') + 2))`
+
+  --sync_slave_with_master $_slave
+  --let $diff_table_1= $_master:$diff_table
+  --let $diff_table_2= $_slave:$diff_table
+  --source include/diff_tables.inc
+  connection $_slave;
+}

mysql-test/suite/rpl/r/rpl_current_user.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT.*");
+
+# On slave2
+# Connect slave2 to slave
+CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=SLAVE_MYPORT;,
+MASTER_LOG_FILE='slave-bin.000001', MASTER_USER='root';
+START SLAVE;
+
+# [On master]
+DROP VIEW IF EXISTS v_user;
+DROP VIEW IF EXISTS v_tables_priv;
+DROP VIEW IF EXISTS v_procs_priv;
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS my_grant;
+DROP PROCEDURE IF EXISTS my_revoke;
+DROP FUNCTION IF EXISTS my_user;
+DROP EVENT IF EXISTS e1;
+CREATE TABLE t1(c1 char(100));
+CREATE VIEW test.v_user AS SELECT * FROM mysql.user WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_tables_priv AS SELECT * FROM mysql.tables_priv WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_procs_priv AS SELECT * FROM mysql.procs_priv WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_event AS SELECT definer FROM mysql.event WHERE name = 'e1';
+CREATE PROCEDURE p1() SELECT 1;
+# bug48321_1-01234 has the max length(16) of user.
+GRANT ALL PRIVILEGES ON *.* TO 'bug48321_1-01234'@'localhost' WITH GRANT OPTION;
+
+# Make sure the max lengths of user and host
+# the user name is too lengh
+GRANT CREATE USER ON *.* TO '01234567890123456'@'fakehost';
+ERROR HY000: String '01234567890123456' is too long for user name (should be no longer than 16)
+# the host name is too lengh
+GRANT CREATE USER ON *.* TO 'fakename'@'0123456789012345678901234567890123456789012345678901234567890';
+ERROR HY000: String '0123456789012345678901234567890123456789012345678901234567890' is too long for host name (should be no longer than 60)
+
+# User 'bug48321_1-01234' connects to master by conn1
+# [On conn1]
+# Verify 'REVOKE ALL' statement
+REVOKE ALL PRIVILEGES, GRANT OPTION FROM CURRENT_USER();
+Comparing tables master:test.v_user and slave:test.v_user
+Comparing tables master:test.v_user and slave2:test.v_user
+
+# Verify 'GRANT ... ON TABLE ...' statement
+GRANT CREATE, INSERT, SELECT ON TABLE test.t1 TO CURRENT_USER();
+Comparing tables master:test.v_tables_priv and slave:test.v_tables_priv
+Comparing tables master:test.v_tables_priv and slave2:test.v_tables_priv
+
+# Verify 'GRANT ... ON PROCEDURE...' statement
+GRANT ALTER ROUTINE, EXECUTE ON PROCEDURE p1 TO CURRENT_USER();
+Comparing tables master:test.v_procs_priv and slave:test.v_procs_priv
+Comparing tables master:test.v_procs_priv and slave2:test.v_procs_priv
+
+# Verify 'GRANT ... ON *.* ...' statement
+GRANT ALL PRIVILEGES ON *.* TO CURRENT_USER() WITH GRANT OPTION;
+Comparing tables master:test.v_procs_priv and slave:test.v_procs_priv
+Comparing tables master:test.v_procs_priv and slave2:test.v_procs_priv
+
+# Verify 'REVOKE ... ON TABLE ...' statement
+REVOKE CREATE, INSERT, SELECT ON TABLE t1 FROM CURRENT_USER();
+Comparing tables master:test.v_tables_priv and slave:test.v_tables_priv
+Comparing tables master:test.v_tables_priv and slave2:test.v_tables_priv
+
+# Verify 'REVOKE ... ON PROCEDURE...' statement
+REVOKE ALTER ROUTINE, EXECUTE ON PROCEDURE p1 FROM CURRENT_USER();
+Comparing tables master:test.v_procs_priv and slave:test.v_procs_priv
+Comparing tables master:test.v_procs_priv and slave2:test.v_procs_priv
+
+# Verify 'REVOKE ... ON *.* ...' statement
+REVOKE ALL PRIVILEGES ON *.* FROM CURRENT_USER();
+Comparing tables master:test.v_user and slave:test.v_user
+Comparing tables master:test.v_user and slave2:test.v_user
+
+# Verify 'GRANT ...' statement in the procedure
+CREATE PROCEDURE my_grant()
+GRANT CREATE, INSERT, SELECT ON TABLE test.t1 TO CURRENT_USER();
+call my_grant;
+Comparing tables master:test.v_tables_priv and slave:test.v_tables_priv
+Comparing tables master:test.v_tables_priv and slave2:test.v_tables_priv
+
+# Verify 'REVOKE ... ON TABLE ...' statement in the procedure
+CREATE PROCEDURE my_revoke()
+REVOKE CREATE, INSERT, SELECT ON TABLE t1 FROM CURRENT_USER();
+call my_revoke;
+Comparing tables master:test.v_tables_priv and slave:test.v_tables_priv
+Comparing tables master:test.v_tables_priv and slave2:test.v_tables_priv
+
+# Verify 'RENAME USER ...' statement
+RENAME USER CURRENT_USER TO 'bug48321_2'@'localhost';
+Comparing tables master:test.v_user and slave:test.v_user
+Comparing tables master:test.v_user and slave2:test.v_user
+
+# Verify 'DROP USER ...' statement
+GRANT CREATE USER ON *.* TO 'bug48321_2'@'localhost';
+DROP USER CURRENT_USER();
+Comparing tables master:test.v_user and slave:test.v_user
+Comparing tables master:test.v_user and slave2:test.v_user
+
+# Verify 'ALTER EVENT...' statement
+CREATE EVENT e1 ON SCHEDULE EVERY 1 DAY DO SELECT * FROM t1;
+# Explicitly assign CURRENT_USER() to definer
+ALTER DEFINER=CURRENT_USER() EVENT e1 ENABLE;
+Comparing tables master:test.v_event and slave:test.v_event
+Comparing tables master:test.v_event and slave2:test.v_event
+
+# Session user will be set as definer, if the statement does not assign
+# a definer
+ALTER EVENT e1 ENABLE;
+Comparing tables master:test.v_event and slave:test.v_event
+Comparing tables master:test.v_event and slave2:test.v_event
+
+# Verify that this patch does not affect the calling of CURRENT_USER() 
+# in the other statements
+# [On master]
+INSERT INTO t1 VALUES(CURRENT_USER()), ('1234');
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave.
+SELECT * FROM t1;
+c1
+root@localhost
+1234
+# [On slave]
+SELECT * FROM t1;
+c1
+@
+1234
+# [On slave2]
+SELECT * FROM t1;
+c1
+@
+1234
+# [On master]
+UPDATE t1 SET c1=CURRENT_USER() WHERE c1='1234';
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave.
+SELECT * FROM t1;
+c1
+root@localhost
+root@localhost
+# [On slave]
+SELECT * FROM t1;
+c1
+@
+@
+# [On slave2]
+SELECT * FROM t1;
+c1
+@
+@
+# [On master]
+DELETE FROM t1 WHERE c1=CURRENT_USER();
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave.
+SELECT * FROM t1;
+c1
+# [On slave]
+SELECT * FROM t1;
+c1
+# [On slave2]
+SELECT * FROM t1;
+c1
+# [On master]
+CREATE TABLE t2(c1 char(100));
+CREATE FUNCTION my_user() RETURNS VARCHAR(64) 
+SQL SECURITY INVOKER 
+BEGIN
+INSERT INTO t2 VALUES(CURRENT_USER());
+RETURN CURRENT_USER();
+END |
+INSERT INTO t1 VALUES(my_user());
+Warnings:
+Note	1592	Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT. Statement is unsafe because it uses a system function that may return a different value on the slave.
+SELECT * FROM t1;
+c1
+root@localhost
+SELECT * FROM t2;
+c1
+root@localhost
+# [On slave]
+SELECT * FROM t1;
+c1
+@
+SELECT * FROM t2;
+c1
+@
+# [On slave2]
+SELECT * FROM t1;
+c1
+@
+SELECT * FROM t2;
+c1
+@
+
+# END
+DROP TABLE t1, t2;
+DROP VIEW v_user, v_tables_priv, v_procs_priv, v_event;
+DROP PROCEDURE p1;
+DROP PROCEDURE my_grant;
+DROP PROCEDURE my_revoke;
+DROP FUNCTION my_user;
+DROP EVENT e1;

mysql-test/suite/rpl/r/rpl_innodb_mixed_dml.result

@@ -750,7 +750,7 @@ test_rpl	e2	root@localhost	SYSTEM	RECURRING	NULL	1	#	#	NULL	ENABLED	1	latin1	lat
 USE test_rpl;
 SHOW EVENTS;
 Db	Name	Definer	Time zone	Type	Execute at	Interval value	Interval field	Starts	Ends	Status	Originator	character_set_client	collation_connection	Database Collation
-test_rpl	e2	@	SYSTEM	RECURRING	NULL	1	#	#	NULL	SLAVESIDE_DISABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
+test_rpl	e2	root@localhost	SYSTEM	RECURRING	NULL	1	#	#	NULL	SLAVESIDE_DISABLED	1	latin1	latin1_swedish_ci	latin1_swedish_ci
 ==========MASTER==========
 SELECT COUNT(*) FROM t1;
 COUNT(*)

mysql-test/suite/rpl/t/rpl_current_user.cnf

+!include ../my.cnf
+
+[mysqld.3]
+server-id=3
+log-bin=slave-bin
+
+[ENV]
+SLAVE_MYPORT1=		@mysqld.3.port
+SLAVE_MYSOCK1=		@mysqld.3.socket

mysql-test/suite/rpl/t/rpl_current_user.test

+##############################################################################
+# BUG#48321 CURRENT_USER() incorrectly replicated for DROP/RENAME USER,
+# REVOKE, GRANT, ALTER EVENT
+#
+# Calling CURRENT_USER() results into inconsistency between slave and master,
+# as the slave SQL thread has different user with common users.
+#
+# After the patch for bug#48321, session's user will be written into query log
+# event if CURRENT_USER() is called in 'DROP/RENAME USER', 'REVOKE', 'GRANT',
+# 'ALTER EVENT'.
+#
+##############################################################################
+source include/master-slave.inc;
+source include/have_binlog_format_statement.inc;
+call mtr.add_suppression("Unsafe statement written to the binary log using statement format since BINLOG_FORMAT = STATEMENT.*");
+
+--echo
+--echo # On slave2
+connect (slave2,127.0.0.1,root,,test,$SLAVE_MYPORT1,);
+connection slave2;
+
+--echo # Connect slave2 to slave
+--replace_result $SLAVE_MYPORT SLAVE_MYPORT;
+eval CHANGE MASTER TO MASTER_HOST='127.0.0.1', MASTER_PORT=$SLAVE_MYPORT,
+     MASTER_LOG_FILE='slave-bin.000001', MASTER_USER='root';
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+
+--echo
+--echo # [On master]
+connection master;
+--disable_warnings
+DROP VIEW IF EXISTS v_user;
+DROP VIEW IF EXISTS v_tables_priv;
+DROP VIEW IF EXISTS v_procs_priv;
+DROP PROCEDURE IF EXISTS p1;
+DROP PROCEDURE IF EXISTS my_grant;
+DROP PROCEDURE IF EXISTS my_revoke;
+DROP FUNCTION IF EXISTS my_user;
+DROP EVENT IF EXISTS e1;
+--enable_warnings
+CREATE TABLE t1(c1 char(100));
+CREATE VIEW test.v_user AS SELECT * FROM mysql.user WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_tables_priv AS SELECT * FROM mysql.tables_priv WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_procs_priv AS SELECT * FROM mysql.procs_priv WHERE User LIKE 'bug48321%';
+CREATE VIEW test.v_event AS SELECT definer FROM mysql.event WHERE name = 'e1';
+CREATE PROCEDURE p1() SELECT 1;
+--echo # bug48321_1-01234 has the max length(16) of user.
+GRANT ALL PRIVILEGES ON *.* TO 'bug48321_1-01234'@'localhost' WITH GRANT OPTION; 
+
+--echo
+--echo # Make sure the max lengths of user and host
+--echo # the user name is too lengh
+--error 1470
+GRANT CREATE USER ON *.* TO '01234567890123456'@'fakehost';
+--echo # the host name is too lengh
+--error 1470
+GRANT CREATE USER ON *.* TO 'fakename'@'0123456789012345678901234567890123456789012345678901234567890';
+
+--echo
+--echo # User 'bug48321_1-01234' connects to master by conn1
+connect (conn1, 127.0.0.1, 'bug48321_1-01234'@'localhost',,);
+connection conn1;
+--echo # [On conn1]
+--echo # Verify 'REVOKE ALL' statement
+REVOKE ALL PRIVILEGES, GRANT OPTION FROM CURRENT_USER();
+let $diff_table= test.v_user;
+let $diff_server_list= master, slave, slave2;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'GRANT ... ON TABLE ...' statement
+connection conn1;
+GRANT CREATE, INSERT, SELECT ON TABLE test.t1 TO CURRENT_USER();
+let $diff_table= test.v_tables_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'GRANT ... ON PROCEDURE...' statement
+connection conn1;
+GRANT ALTER ROUTINE, EXECUTE ON PROCEDURE p1 TO CURRENT_USER();
+let $diff_table= test.v_procs_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'GRANT ... ON *.* ...' statement
+connection conn1;
+GRANT ALL PRIVILEGES ON *.* TO CURRENT_USER() WITH GRANT OPTION;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'REVOKE ... ON TABLE ...' statement
+connection conn1;
+REVOKE CREATE, INSERT, SELECT ON TABLE t1 FROM CURRENT_USER();
+let $diff_table= test.v_tables_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'REVOKE ... ON PROCEDURE...' statement
+connection conn1;
+REVOKE ALTER ROUTINE, EXECUTE ON PROCEDURE p1 FROM CURRENT_USER();
+let $diff_table= test.v_procs_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'REVOKE ... ON *.* ...' statement
+connection conn1;
+REVOKE ALL PRIVILEGES ON *.* FROM CURRENT_USER();
+let $diff_table= test.v_user;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'GRANT ...' statement in the procedure
+connection conn1;
+CREATE PROCEDURE my_grant()
+  GRANT CREATE, INSERT, SELECT ON TABLE test.t1 TO CURRENT_USER();
+call my_grant;
+let $diff_table= test.v_tables_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'REVOKE ... ON TABLE ...' statement in the procedure
+connection conn1;
+CREATE PROCEDURE my_revoke()
+  REVOKE CREATE, INSERT, SELECT ON TABLE t1 FROM CURRENT_USER();
+call my_revoke;
+let $diff_table= test.v_tables_priv;
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'RENAME USER ...' statement
+connection conn1;
+RENAME USER CURRENT_USER TO 'bug48321_2'@'localhost';
+let $diff_table= test.v_user;
+source include/rpl_diff_tables.inc;
+
+disconnect conn1;
+
+--echo 
+--echo # Verify 'DROP USER ...' statement
+connection master;
+GRANT CREATE USER ON *.* TO 'bug48321_2'@'localhost';
+connect (conn1, 127.0.0.1, 'bug48321_2'@'localhost',,);
+connection conn1;
+DROP USER CURRENT_USER();
+source include/rpl_diff_tables.inc;
+
+--echo 
+--echo # Verify 'ALTER EVENT...' statement
+connection master;
+CREATE EVENT e1 ON SCHEDULE EVERY 1 DAY DO SELECT * FROM t1;
+
+--echo # Explicitly assign CURRENT_USER() to definer
+ALTER DEFINER=CURRENT_USER() EVENT e1 ENABLE;
+let $diff_table= test.v_event;
+source include/rpl_diff_tables.inc;
+
+connection master;
+--echo
+--echo # Session user will be set as definer, if the statement does not assign
+--echo # a definer
+ALTER EVENT e1 ENABLE;
+sync_slave_with_master;
+source include/rpl_diff_tables.inc;
+
+--echo
+--echo # Verify that this patch does not affect the calling of CURRENT_USER() 
+--echo # in the other statements
+connection master;
+--echo # [On master]
+INSERT INTO t1 VALUES(CURRENT_USER()), ('1234');
+SELECT * FROM t1;
+sync_slave_with_master;
+--echo # [On slave]
+SELECT * FROM t1;
+--echo # [On slave2]
+sync_slave_with_master slave2;
+SELECT * FROM t1;
+
+connection master;
+--echo # [On master]
+UPDATE t1 SET c1=CURRENT_USER() WHERE c1='1234';
+SELECT * FROM t1;
+sync_slave_with_master;
+--echo # [On slave]
+SELECT * FROM t1;
+sync_slave_with_master slave2;
+--echo # [On slave2]
+SELECT * FROM t1;
+
+connection master;
+--echo # [On master]
+DELETE FROM t1 WHERE c1=CURRENT_USER();
+SELECT * FROM t1;
+sync_slave_with_master;
+--echo # [On slave]
+SELECT * FROM t1;
+sync_slave_with_master slave2;
+--echo # [On slave2]
+SELECT * FROM t1;
+
+connection master;
+--echo # [On master]
+CREATE TABLE t2(c1 char(100));
+
+DELIMITER |;
+CREATE FUNCTION my_user() RETURNS VARCHAR(64) 
+  SQL SECURITY INVOKER 
+BEGIN
+  INSERT INTO t2 VALUES(CURRENT_USER());
+  RETURN CURRENT_USER();
+END |
+DELIMITER ;|
+
+INSERT INTO t1 VALUES(my_user());
+SELECT * FROM t1;
+SELECT * FROM t2;
+sync_slave_with_master;
+--echo # [On slave]
+SELECT * FROM t1;
+SELECT * FROM t2;
+sync_slave_with_master slave2;
+--echo # [On slave2]
+SELECT * FROM t1;
+SELECT * FROM t2;
+
+--echo
+--echo # END
+connection master;
+DROP TABLE t1, t2;
+DROP VIEW v_user, v_tables_priv, v_procs_priv, v_event; 
+DROP PROCEDURE p1;
+DROP PROCEDURE my_grant;
+DROP PROCEDURE my_revoke;
+DROP FUNCTION my_user;
+DROP EVENT e1;
+sync_slave_with_master;
+sync_slave_with_master slave2;
+source include/master-slave-end.inc;

sql/log_event.cc

@@ -2323,6 +2323,53 @@ bool Query_log_event::write(IO_CACHE* file)
     start+= 4;
   }
 
+  if (thd && thd->is_current_user_used())
+  {
+    LEX_STRING user;
+    LEX_STRING host;
+    memset(&user, 0, sizeof(user));
+    memset(&host, 0, sizeof(host));
+
+    if (thd->slave_thread && thd->has_invoker())
+    {
+      /* user will be null, if master is older than this patch */
+      user= thd->get_invoker_user();
+      host= thd->get_invoker_host();
+    }
+    else if (thd->security_ctx->priv_user)
+    {
+      Security_context *ctx= thd->security_ctx;
+
+      user.length= strlen(ctx->priv_user);
+      user.str= ctx->priv_user;
+      if (ctx->priv_host[0] != '\0')
+      {
+        host.str= ctx->priv_host;
+        host.length= strlen(ctx->priv_host);
+      }
+    }
+
+    if (user.length > 0)
+    {
+      *start++= Q_INVOKER;
+
+      /*
+        Store user length and user. The max length of use is 16, so 1 byte is
+        enough to store the user's length.
+       */
+      *start++= (uchar)user.length;
+      memcpy(start, user.str, user.length);
+      start+= user.length;
+
+      /*
+        Store host length and host. The max length of host is 60, so 1 byte is
+        enough to store the host's length.
+       */
+      *start++= (uchar)host.length;
+      memcpy(start, host.str, host.length);
+      start+= host.length;
+    }
+  }
   /*
     NOTE: When adding new status vars, please don't forget to update
     the MAX_SIZE_LOG_EVENT_STATUS in log_event.h and update the function
@@ -2652,6 +2699,8 @@ Query_log_event::Query_log_event(const char* buf, uint event_len,
   bool catalog_nz= 1;
   DBUG_ENTER("Query_log_event::Query_log_event(char*,...)");
 
+  memset(&user, 0, sizeof(user));
+  memset(&host, 0, sizeof(host));
   common_header_len= description_event->common_header_len;
   post_header_len= description_event->post_header_len[event_type-1];
   DBUG_PRINT("info",("event_len: %u  common_header_len: %d  post_header_len: %d",
@@ -2806,6 +2855,20 @@ Query_log_event::Query_log_event(const char* buf, uint event_len,
       data_written= master_data_written= uint4korr(pos);
       pos+= 4;
       break;
+    case Q_INVOKER:
+    {
+      CHECK_SPACE(pos, end, 1);
+      user.length= *pos++;
+      CHECK_SPACE(pos, end, user.length);
+      user.str= my_strndup((const char *)pos, user.length, MYF(0));
+      pos+= user.length;
+
+      CHECK_SPACE(pos, end, 1);
+      host.length= *pos++;
+      CHECK_SPACE(pos, end, host.length);
+      host.str= my_strndup((const char *)pos, host.length, MYF(0));
+      pos+= host.length;
+    }
     default:
       /* That's why you must write status vars in growing order of code */
       DBUG_PRINT("info",("Query_log_event has unknown status vars (first has\
@@ -3252,7 +3315,7 @@ int Query_log_event::do_apply_event(Relay_log_info const *rli,
         thd->variables.collation_database= thd->db_charset;
       
       thd->table_map_for_update= (table_map)table_map_for_update;
-      
+      thd->set_invoker(&user, &host);
       /* Execute the query (note that we bypass dispatch_command()) */
       Parser_state parser_state;
       if (!parser_state.init(thd, thd->query(), thd->query_length()))

sql/log_event.h

@@ -270,7 +270,8 @@ struct sql_ex_info
                                    1 + 2          /* type, lc_time_names_number */ + \
                                    1 + 2          /* type, charset_database_number */ + \
                                    1 + 8          /* type, table_map_for_update */ + \
-                                   1 + 4          /* type, master_data_written */)
+                                   1 + 4          /* type, master_data_written */ + \
+                                   1 + 16 + 1 + 60/* type, user_len, user, host_len, host */)
 #define MAX_LOG_EVENT_HEADER   ( /* in order of Query_log_event::write */ \
   LOG_EVENT_HEADER_LEN + /* write_header */ \
   QUERY_HEADER_LEN     + /* write_data */   \
@@ -339,6 +340,8 @@ struct sql_ex_info
 
 #define Q_MASTER_DATA_WRITTEN_CODE 10
 
+#define Q_INVOKER 11
+
 /* Intvar event post-header */
 
 /* Intvar event data */
@@ -1610,6 +1613,8 @@ protected:
 */
 class Query_log_event: public Log_event
 {
+  LEX_STRING user;
+  LEX_STRING host;
 protected:
   Log_event::Byte* data_buf;
 public:

sql/sql_acl.cc

@@ -210,6 +210,7 @@ static bool compare_hostname(const acl_host_and_ip *host,const char *hostname,
 			     const char *ip);
 static my_bool acl_load(THD *thd, TABLE_LIST *tables);
 static my_bool grant_load(THD *thd, TABLE_LIST *tables);
+static inline void get_grantor(THD *thd, char* grantor);
 
 /*
   Convert scrambled password to binary form, according to scramble type, 
@@ -2755,6 +2756,20 @@ end:
   DBUG_RETURN(result);
 }
 
+static inline void get_grantor(THD *thd, char *grantor)
+{
+  const char *user= thd->security_ctx->user;
+  const char *host= thd->security_ctx->host_or_ip;
+
+#if defined(HAVE_REPLICATION)
+  if (thd->slave_thread && thd->has_invoker())
+  {
+    user= thd->get_invoker_user().str;
+    host= thd->get_invoker_host().str;
+  }
+#endif
+  strxmov(grantor, user, "@", host, NullS);
+}
 
 static int replace_table_table(THD *thd, GRANT_TABLE *grant_table,
 			       TABLE *table, const LEX_USER &combo,
@@ -2769,9 +2784,7 @@ static int replace_table_table(THD *thd, GRANT_TABLE *grant_table,
   uchar user_key[MAX_KEY_LENGTH];
   DBUG_ENTER("replace_table_table");
 
-  strxmov(grantor, thd->security_ctx->user, "@",
-          thd->security_ctx->host_or_ip, NullS);
-
+  get_grantor(thd, grantor);
   /*
     The following should always succeed as new users are created before
     this function is called!
@@ -2901,9 +2914,7 @@ static int replace_routine_table(THD *thd, GRANT_NAME *grant_name,
     DBUG_RETURN(-1);
   }
 
-  strxmov(grantor, thd->security_ctx->user, "@",
-          thd->security_ctx->host_or_ip, NullS);
-
+  get_grantor(thd, grantor);
   /*
     New users are created before this function is called.
 

sql/sql_class.cc

@@ -626,6 +626,9 @@ THD::THD()
   thr_lock_owner_init(&main_lock_id, &lock_info);
 
   m_internal_handler= NULL;
+  current_user_used= FALSE;
+  memset(&invoker_user, 0, sizeof(invoker_user));
+  memset(&invoker_host, 0, sizeof(invoker_host));
 }
 
 
@@ -1341,6 +1344,7 @@ void THD::cleanup_after_query()
   where= THD::DEFAULT_WHERE;
   /* reset table map for multi-table update */
   table_map_for_update= 0;
+  clean_current_user_used();
 }
 
 
@@ -3401,6 +3405,22 @@ void THD::leave_locked_tables_mode()
     mysql_ha_move_tickets_after_trans_sentinel(this);
 }
 
+void THD::get_definer(LEX_USER *definer)
+{
+  set_current_user_used();
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  if (slave_thread && has_invoker())
+  {
+    definer->user = invoker_user;
+    definer->host= invoker_host;
+    definer->password.str= NULL;
+    definer->password.length= 0;
+  }
+  else
+#endif
+    get_default_definer(this, definer);
+}
+
 
 /**
   Mark transaction to rollback and mark error as fatal to a sub-statement.

sql/sql_class.h

@@ -2716,6 +2716,18 @@ public:
   }
   void leave_locked_tables_mode();
   int decide_logging_format(TABLE_LIST *tables);
+  void set_current_user_used() { current_user_used= TRUE; }
+  bool is_current_user_used() { return current_user_used; }
+  void clean_current_user_used() { current_user_used= FALSE; }
+  void get_definer(LEX_USER *definer);
+  void set_invoker(const LEX_STRING *user, const LEX_STRING *host)
+  {
+    invoker_user= *user;
+    invoker_host= *host;
+  }
+  LEX_STRING get_invoker_user() { return invoker_user; }
+  LEX_STRING get_invoker_host() { return invoker_host; }
+  bool has_invoker() { return invoker_user.length > 0; }
 private:
 
   /** The current internal error handler for this thread, or NULL. */
@@ -2738,6 +2750,25 @@ private:
   MEM_ROOT main_mem_root;
   Warning_info main_warning_info;
   Diagnostics_area main_da;
+
+  /**
+    It will be set TURE if CURRENT_USER() is called in account management
+    statements or default definer is set in CREATE/ALTER SP, SF, Event,
+    TRIGGER or VIEW statements.
+
+    Current user will be binlogged into Query_log_event if current_user_used
+    is TRUE; It will be stored into invoker_host and invoker_user by SQL thread.
+   */
+  bool current_user_used;
+
+  /**
+    It points to the invoker in the Query_log_event.
+    SQL thread use it as the default definer in CREATE/ALTER SP, SF, Event,
+    TRIGGER or VIEW statements or current user in account management
+    statements if it is not NULL.
+   */
+  LEX_STRING invoker_user;
+  LEX_STRING invoker_host;
 };
 
 

sql/sql_parse.cc

@@ -7658,7 +7658,7 @@ LEX_USER *create_default_definer(THD *thd)
   if (! (definer= (LEX_USER*) thd->alloc(sizeof(LEX_USER))))
     return 0;
 
-  get_default_definer(thd, definer);
+  thd->get_definer(definer);
 
   return definer;
 }