ndb - rbr blobs etc: minor changes bug#17045 bug#17505

sql/ha_ndbcluster_binlog.cc:
  optim: setting db/schema for data events seems unnecessary
storage/ndb/src/ndbapi/Ndb.cpp:
  use NAME_LEN

sql/ha_ndbcluster_binlog.cc

@@ -2913,17 +2913,19 @@ pthread_handler_t ndb_binlog_thread_func(void *arg)
             DBUG_ASSERT(share != 0);
           }
 #endif
-          // set injector_ndb database/schema from table internal name
-          int ret= ndb->setDatabaseAndSchemaName(pOp->getEvent()->getTable());
-          assert(ret == 0);
           if ((unsigned) pOp->getEventType() <
               (unsigned) NDBEVENT::TE_FIRST_NON_DATA_EVENT)
             ndb_binlog_thread_handle_data_event(ndb, pOp, row, trans);
           else
+          {
+            // set injector_ndb database/schema from table internal name
+            int ret= ndb->setDatabaseAndSchemaName(pOp->getEvent()->getTable());
+            assert(ret == 0);
             ndb_binlog_thread_handle_non_data_event(ndb, pOp, row);
-          // reset to catch errors
-          ndb->setDatabaseName("");
-          ndb->setDatabaseSchemaName("");
+            // reset to catch errors
+            ndb->setDatabaseName("");
+            ndb->setDatabaseSchemaName("");
+          }
 
           pOp= ndb->nextEvent();
         } while (pOp && pOp->getGCI() == gci);

storage/ndb/src/ndbapi/Ndb.cpp

@@ -1093,12 +1093,14 @@ int Ndb::setDatabaseAndSchemaName(const NdbDictionary::Table* t)
   if (s1 && s1 != s0) {
     const char* s2 = strchr(s1 + 1, table_name_separator);
     if (s2 && s2 != s1 + 1) {
-      char buf[200];
-      sprintf(buf, "%.*s", s1 - s0, s0);
-      setDatabaseName(buf);
-      sprintf(buf, "%.*s", s2 - (s1 + 1), s1 + 1);
-      setDatabaseSchemaName(buf);
-      return 0;
+      char buf[NAME_LEN + 1];
+      if (s1 - s0 <= NAME_LEN && s2 - (s1 + 1) <= NAME_LEN) {
+        sprintf(buf, "%.*s", s1 - s0, s0);
+        setDatabaseName(buf);
+        sprintf(buf, "%.*s", s2 - (s1 + 1), s1 + 1);
+        setDatabaseSchemaName(buf);
+        return 0;
+      }
     }
   }
   return -1;