Added Who-Is-Router process for Notification Class recipient unknown router addresses. (#1243)

* Added Who-Is-Router-To-Network process in basic Notification Class when recipient address is missing the router MAC address.

* Added buffer_length parameter to octet string buffer decode functions

* Fixed BACnet address handling for I-Am-Router address updating the recipient list address for the next hop router.

* Changed VMAC encoding and decoding to use octet string buffer API to reduce stack RAM.

test/bacnet/basic/object/nc/CMakeLists.txt

@@ -72,6 +72,8 @@ add_executable(${PROJECT_NAME}
     # Test and test library files
     ./stubs.c
     ./src/main.c
+    ${TST_DIR}/bacnet/basic/object/test/datetime_local.c
+    ${TST_DIR}/bacnet/basic/object/test/device_mock.c
     ${ZTST_DIR}/ztest_mock.c
     ${ZTST_DIR}/ztest.c
     )

test/bacnet/basic/object/nc/stubs.c

@@ -11,10 +11,19 @@
 #include "bacnet/datetime.h"
 #include "bacnet/bacdef.h"
 #include "bacnet/npdu.h"
+#include "bacnet/basic/npdu/h_npdu.h"
 #include "bacnet/basic/object/nc.h"
 
-uint32_t Device_Object_Instance_Number(void)
+uint8_t Send_CEvent_Notify_Address(
+    uint8_t *pdu,
+    uint16_t pdu_size,
+    const BACNET_EVENT_NOTIFICATION_DATA *data,
+    BACNET_ADDRESS *dest)
 {
+    (void)pdu;
+    (void)pdu_size;
+    (void)data;
+    (void)dest;
     return 0;
 }
 
@@ -43,15 +52,14 @@ void Send_WhoIs(int32_t low_limit, int32_t high_limit)
     (void)high_limit;
 }
 
-bool datetime_local(
-    BACNET_DATE *bdate,
-    BACNET_TIME *btime,
-    int16_t *utc_offset_minutes,
-    bool *dst_active)
+void Send_Who_Is_Router_To_Network(BACNET_ADDRESS *dst, int dnet)
 {
-    (void)bdate;
-    (void)btime;
-    (void)utc_offset_minutes;
-    (void)dst_active;
-    return true;
+    (void)dst;
+    (void)dnet;
+}
+
+void npdu_set_i_am_router_to_network_handler(
+    i_am_router_to_network_function pFunction)
+{
+    (void)pFunction;
 }