Bug#27293: mysqldump crashes when dumping procedure defined by different user

mysqldump didn't properly handle getting no data on
SHOW CREATE PROCEDURE.  If S/C/P fails (due to dumping
user's insufficient privileges on mysql.proc, say),
mysqldump will print a comment to that effect to the
output and return an error-code.  If the -f (force) option
is used, the dump will continue, otherwise, it will abort
right there and then.

Also fixes Bug#22761, "mysqldump reports no errors when using
--routines without mysql.proc privileges"
---
Merge mysql.com:/home/tnurnberg/27293/50-27293
into  mysql.com:/home/tnurnberg/27293/51-27293
---
Merge tnurnberg@bk-internal.mysql.com:/home/bk/mysql-5.1-maint
into  mysql.com:/home/tnurnberg/27293/51-27293


client/mysqldump.c:
  Bug#27293: mysqldump crashes when dumping procedure defined by different user
  
  handle failure of SHOW CREATE PROCEDURE, give user diagnostics,
  heed -f (force) option
  ---
  manual merge
mysql-test/r/mysqldump.result:
  Bug#27293: mysqldump crashes when dumping procedure defined by different user
  
  show that trying to mysqldump --routines with insufficient
  privileges will no longer crash the client
  ---
  manual merge
mysql-test/t/mysqldump.test:
  Bug#27293: mysqldump crashes when dumping procedure defined by different user
  
  show that trying to mysqldump --routines with insufficient
  privileges will no longer crash the client
  ---
  manual merge

client/mysqldump.c

@@ -1640,9 +1640,16 @@ static uint dump_routines_for_db(char *db)
             if the user has EXECUTE privilege he see routine names, but NOT the
             routine body of other routines that are not the creator of!
           */
-          DBUG_PRINT("info",("length of body for %s row[2] '%s' is %ld",
-                             routine_name, row[2], (long) strlen(row[2])));
-          if (strlen(row[2]))
+          DBUG_PRINT("info",("length of body for %s row[2] '%s' is %d",
+                             routine_name, row[2] ? row[2] : "(null)",
+                             row[2] ? (int) strlen(row[2]) : 0));
+          if (row[2] == NULL)
+          {
+            fprintf(sql_file, "\n-- insufficient privileges to %s\n", query_buff);
+            fprintf(sql_file, "-- does %s have permissions on mysql.proc?\n\n", current_user);
+            maybe_die(EX_MYSQLERR,"%s has insufficent privileges to %s!", current_user, query_buff);
+          }
+          else if (strlen(row[2]))
           {
             char *query_str= NULL;
             char *definer_begin;
@@ -1692,7 +1699,7 @@ static uint dump_routines_for_db(char *db)
             /*
               we need to change sql_mode only for the CREATE
               PROCEDURE/FUNCTION otherwise we may need to re-quote routine_name
-            */;
+            */
             fprintf(sql_file, "/*!50003 SET SESSION SQL_MODE=\"%s\"*/;;\n",
                     row[1] /* sql_mode */);
             fprintf(sql_file, "/*!50003 %s */;;\n",

mysql-test/r/mysqldump.result

@@ -3282,6 +3282,33 @@ drop database bug23491_original;
 drop database bug23491_restore;
 use test;
 # 
+# Bug 27293: mysqldump crashes when dumping routines
+# defined by a different user
+#
+# Bug #22761: mysqldump reports no errors when using
+# --routines without mysql.proc privileges
+#
+create database mysqldump_test_db;
+grant all privileges on mysqldump_test_db.*  to user1;
+grant all privileges on mysqldump_test_db.*  to user2;
+create procedure mysqldump_test_db.sp1() select 'hello';
+DELIMITER ;;
+
+-- insufficient privileges to SHOW CREATE PROCEDURE `sp1`
+-- does user2 have permissions on mysql.proc?
+
+DELIMITER ;
+DELIMITER ;;
+/*!50003 SET SESSION SQL_MODE=""*/;;
+/*!50003 CREATE*/ /*!50020 DEFINER=`user1`@`%`*/ /*!50003 PROCEDURE `sp1`()
+select 'hello' */;;
+/*!50003 SET SESSION SQL_MODE=@OLD_SQL_MODE*/;;
+DELIMITER ;
+drop procedure sp1;
+drop user user1;
+drop user user2;
+drop database mysqldump_test_db;
+#
 # End of 5.0 tests
 #
 drop table if exists t1;

mysql-test/t/mysqldump.test

@@ -1497,6 +1497,37 @@ drop database bug23491_original;
 drop database bug23491_restore;
 use test;
 
+--echo # 
+--echo # Bug 27293: mysqldump crashes when dumping routines
+--echo # defined by a different user
+--echo #
+--echo # Bug #22761: mysqldump reports no errors when using
+--echo # --routines without mysql.proc privileges
+--echo #
+
+create database mysqldump_test_db;
+
+grant all privileges on mysqldump_test_db.*  to user1;
+grant all privileges on mysqldump_test_db.*  to user2;
+
+connect (user27293,localhost,user1,,mysqldump_test_db,$MASTER_MYPORT,$MASTER_MYSOCK);
+connection user27293;
+
+create procedure mysqldump_test_db.sp1() select 'hello';
+
+--error 2
+--exec $MYSQL_DUMP -f --compact --user=user2 --password=  -h 127.0.0.1 -P $MASTER_MYPORT --routines mysqldump_test_db
+
+--exec $MYSQL_DUMP -f --compact --user=user1 --password=  -h 127.0.0.1 -P $MASTER_MYPORT --routines mysqldump_test_db
+
+drop procedure sp1;
+
+connection default;
+drop user user1;
+drop user user2;
+
+drop database mysqldump_test_db;
+
 --echo #
 --echo # End of 5.0 tests
 --echo #