From Erwin Rol:

Artnet, RDM and DMX dissector updates

https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7286

svn path=/trunk/; revision=42880

1 files changed, 158 insertions, 0 deletions

diff --git a/epan/dissectors/packet-dmx-test.c b/epan/dissectors/packet-dmx-test.c
new file mode 100644
index 0000000000..2161f281a9
--- /dev/null
+++ b/epan/dissectors/packet-dmx-test.c
@@ -0,0 +1,158 @@
+/* packet-dmx-test.c
+ * DMX Test packet disassembly.
+ *
+ * $Id: $
+ *
+ * This dissector is written by
+ *
+ *  Erwin Rol <erwin@erwinrol.com>
+ *  Copyright 2011 Erwin Rol
+ *
+ *  Wireshark - Network traffic analyzer
+ *  Gerald Combs <gerald@wireshark.org>
+ *  Copyright 1999 Gerald Combs
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor
+ * Boston, MA  02110-1301, USA.
+ */
+
+/*
+ * This dissector is based on;
+ * American National Standard E1.11 - 2004
+ * Entertainment Technology USITT DMX512-A
+ * Asynchronous Serial Digital Data Transmission Standard
+ * for Controlling Lighting Equipment and Accessories
+ */
+
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <stdlib.h>
+#include <ctype.h>
+#include <time.h>
+#include <string.h>
+#include <epan/packet.h>
+#include <epan/addr_resolv.h>
+#include <epan/prefs.h>
+#include <epan/strutil.h>
+
+#define DMX_TEST_PACKET_SIZE 512
+#define DMX_TEST_VALUE 0x55
+
+void proto_reg_handoff_dmx_test(void);
+
+static int proto_dmx_test = -1;
+
+static int hf_dmx_test_data = -1;
+static int hf_dmx_test_data_good = -1;
+static int hf_dmx_test_data_bad = -1;
+
+static int ett_dmx_test = -1;
+
+static void
+dissect_dmx_test(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
+{
+	col_set_str(pinfo->cinfo, COL_PROTOCOL, "DMX Test Frame");
+	col_clear(pinfo->cinfo, COL_INFO);
+
+	if (tree != NULL) {
+		unsigned offset = 0;
+		unsigned size, i, test_data_is_ok;
+		proto_tree* test_data_tree;
+		proto_item *item;
+
+		proto_tree *ti = proto_tree_add_item(tree, proto_dmx_test, tvb,
+							offset, -1, FALSE);
+		proto_tree *dmx_test_tree = proto_item_add_subtree(ti, ett_dmx_test);
+
+		size = tvb_reported_length_remaining(tvb, offset);
+
+		item = proto_tree_add_item(dmx_test_tree, hf_dmx_test_data, tvb,
+							offset, size, ENC_BIG_ENDIAN);
+		offset += size;
+
+		if (size == DMX_TEST_PACKET_SIZE) {
+			test_data_is_ok = TRUE;
+			for (i = 0; i < DMX_TEST_PACKET_SIZE; i++) {
+				if (tvb_get_guint8(tvb, i) != DMX_TEST_VALUE) {
+					test_data_is_ok = FALSE;
+					break;
+				}
+			}
+		} else {
+			test_data_is_ok = FALSE;
+		}
+
+		if (test_data_is_ok) {
+			proto_item_append_text(ti, ", Data correct");
+			proto_item_append_text(item, " [correct]");
+
+			test_data_tree = proto_item_add_subtree(item, ett_dmx_test);
+			item = proto_tree_add_boolean(test_data_tree, hf_dmx_test_data_good, tvb,
+							offset, size, TRUE);
+			PROTO_ITEM_SET_GENERATED(item);
+			item = proto_tree_add_boolean(test_data_tree, hf_dmx_test_data_bad, tvb,
+							offset, size, FALSE);
+			PROTO_ITEM_SET_GENERATED(item);
+		} else {
+			proto_item_append_text(ti, ", Data incorrect");
+			proto_item_append_text(item, " [incorrect]");
+
+			test_data_tree = proto_item_add_subtree(item, ett_dmx_test);
+			item = proto_tree_add_boolean(test_data_tree, hf_dmx_test_data_good, tvb,
+							offset, size, FALSE);
+			PROTO_ITEM_SET_GENERATED(item);
+			item = proto_tree_add_boolean(test_data_tree, hf_dmx_test_data_bad, tvb,
+								offset, size, TRUE);
+			PROTO_ITEM_SET_GENERATED(item);
+		}
+	}
+}
+
+void
+proto_register_dmx_test(void)
+{
+	static hf_register_info hf[] = {
+		{ &hf_dmx_test_data,
+			{ "Test Data", "dmx_test.data",
+				FT_BYTES, BASE_NONE, NULL, 0x0,
+				NULL, HFILL }},
+
+		{ &hf_dmx_test_data_good,
+			{ "Data Good", "dmx_test.data_good",
+				FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+				"True: test data is correct; False: test data is incorrect", HFILL }},
+
+		{ &hf_dmx_test_data_bad,
+			{ "Data Bad", "dmx_test.data_bad",
+				FT_BOOLEAN, BASE_NONE, NULL, 0x0,
+				"True: test data is incorrect; False: test data is correct", HFILL }},
+	};
+
+	static gint *ett[] = {
+		&ett_dmx_test
+	};
+
+	proto_dmx_test = proto_register_protocol("DMX Test Frame", "DMX Test Frame", "dmx-test");
+	proto_register_field_array(proto_dmx_test, hf, array_length(hf));
+	proto_register_subtree_array(ett, array_length(ett));
+	register_dissector("dmx-test", dissect_dmx_test, proto_dmx_test);
+}
+
+void
+proto_reg_handoff_dmx_test(void)
+{
+}