Add the re-write of the NetWare Core Protocol dissector. It's mostly

a framework for the dissector; of the more than 400 NCP packet types, only
a handful are defined. But this dissector framework is much better than
the previous one.

svn path=/trunk/; revision=2173

1 files changed, 78 insertions, 0 deletions

diff --git a/ptvcursor.c b/ptvcursor.c
new file mode 100644
index 0000000000..971fc0e0ee
--- /dev/null
+++ b/ptvcursor.c
@@ -0,0 +1,78 @@
+/* ptvcursor.c
+ * 
+ * Proto Tree TVBuff cursor
+ * Gilbert Ramirez <gram@xiexie.org>
+ *
+ * $Id: ptvcursor.c,v 1.1 2000/07/28 20:03:43 gram Exp $
+ *
+ * Ethereal - Network traffic analyzer
+ * By Gerald Combs <gerald@zing.org>
+ * Copyright 2000 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __PTVCURSOR_H__
+#include "ptvcursor.h"
+#endif
+
+
+struct ptvcursor {
+	proto_tree	*tree;
+	tvbuff_t	*tvb;
+	gint		offset;
+};
+
+
+/* Allocates an initializes a ptvcursor_t with 3 variables:
+ * 	proto_tree, tvbuff, and offset. */
+ptvcursor_t*
+ptvcursor_new(proto_tree *tree, tvbuff_t *tvb, gint offset)
+{
+	ptvcursor_t	*ptvc;
+
+	ptvc = g_new(ptvcursor_t, 1);
+	ptvc->tree	= tree;
+	ptvc->tvb	= tvb;
+	ptvc->offset	= offset;
+	return ptvc;
+}
+
+
+/* Gets data from tvbuff, adds it to proto_tree, increments offset,
+ * and returns proto_item* */
+proto_item*
+ptvcursor_add(ptvcursor_t *ptvc, int hf, gint length, gboolean endianness)
+{
+	proto_item	*item;
+
+	item = proto_tree_add_item(ptvc->tree, hf, ptvc->tvb, ptvc->offset,
+			length, endianness);
+
+	if (length == PTVC_VARIABLE_LENGTH) {
+		ptvc->offset += proto_item_get_len(item);
+	}
+	else {
+		ptvc->offset += length;
+	}
+	return item;
+}
+
+/* Frees memory for ptvcursor_t, but nothing deeper than that. */
+void
+ptvcursor_free(ptvcursor_t *ptvc)
+{
+	g_free(ptvc);
+}