From 4b2839c3c2b1a1610fc79f17317d2e0e4ca71b98 Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Sun, 7 Sep 2008 04:14:50 +0000
Subject: [PATCH] Moved npdu_handler to demo/handler/h_npdu.c file.

---
 bacnet-stack/demo/handler/h_npdu.c | 73 ++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 bacnet-stack/demo/handler/h_npdu.c

diff --git a/bacnet-stack/demo/handler/h_npdu.c b/bacnet-stack/demo/handler/h_npdu.c
new file mode 100644
index 00000000..9ebee897
--- /dev/null
+++ b/bacnet-stack/demo/handler/h_npdu.c
@@ -0,0 +1,73 @@
+/**************************************************************************
+*
+* Copyright (C) 2008 Steve Karg <skarg@users.sourceforge.net>
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be included
+* in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*
+*********************************************************************/
+#include <stdbool.h>
+#include <stdint.h>
+#include "bacdef.h"
+#include "bacdcode.h"
+#include "bacint.h"
+#include "bacenum.h"
+#include "bits.h"
+#include "npdu.h"
+#include "apdu.h"
+#define DEBUG_ENABLED 0
+#include "debug.h"
+
+#if PRINT_ENABLED
+#include <stdio.h>
+#endif
+
+void npdu_handler(
+    BACNET_ADDRESS * src,       /* source address */
+    uint8_t * pdu,      /* PDU data */
+    uint16_t pdu_len)
+{       /* length PDU  */
+    int apdu_offset = 0;
+    BACNET_ADDRESS dest = { 0 };
+    BACNET_NPDU_DATA npdu_data = { 0 };
+
+    apdu_offset = npdu_decode(&pdu[0], &dest, src, &npdu_data);
+    if (npdu_data.network_layer_message) {
+        /*FIXME: network layer message received!  Handle it! */
+        debug_printf("NPDU: Network Layer Message discarded!\n");
+    } else if ((apdu_offset > 0) && (apdu_offset <= pdu_len)) {
+        if ((npdu_data.protocol_version == BACNET_PROTOCOL_VERSION) &&
+            ((dest.net == 0) || (dest.net == BACNET_BROADCAST_NETWORK))) {
+            /* only handle the version that we know how to handle */
+            /* and we are not a router, so ignore messages with
+               routing information cause they are not for us */
+            apdu_handler(src, &pdu[apdu_offset],
+                (uint16_t) (pdu_len - apdu_offset));
+        } else {
+            if (dest.net) {
+                debug_printf("NPDU: DNET=%d.  Discarded!\n", dest.net);
+            } else {
+                debug_printf("NPDU: BACnet Protocol Version=%d.  Discarded!\n",
+                    npdu_data.protocol_version);
+            }
+        }
+    }
+
+    return;
+}