From 335c07c3675877476d56b0efb090d7bb840aeca9 Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Tue, 4 Nov 2008 20:23:31 +0000
Subject: [PATCH] Added check for valid object instance in COV demo.

---
 bacnet-stack/demo/handler/h_cov.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/bacnet-stack/demo/handler/h_cov.c b/bacnet-stack/demo/handler/h_cov.c
index c4806db7..412bf032 100644
--- a/bacnet-stack/demo/handler/h_cov.c
+++ b/bacnet-stack/demo/handler/h_cov.c
@@ -426,9 +426,14 @@ static bool cov_subscribe(
 
     switch (cov_data->monitoredObjectIdentifier.type) {
         case OBJECT_BINARY_INPUT:
-            status = true;
-            status =
-                cov_list_subscribe(src, cov_data, error_class, error_code);
+            if (Binary_Input_Valid_Instance(
+                cov_data->monitoredObjectIdentifier.instance)) {
+                status =
+                    cov_list_subscribe(src, cov_data, error_class, error_code);
+            } else {
+                *error_class = ERROR_CLASS_OBJECT;
+                *error_code = ERROR_CODE_UNKNOWN_OBJECT;
+            }
             break;
         default:
             *error_class = ERROR_CLASS_OBJECT;