Provide for per-protocol-tree data in the proto_tree code.

Put a hash-table of "interesting" fields in the per-proto-tree data.
The dfilter code records which fields/protocols are "interesting" (by which
I mean, their value or existence is checked). Thus, the proto_tree routines
can create special arrays of field_info*'s that are ready for the dfilter
engine to use during a filter operation.

Also store the "proto_tree_is_visible" boolean, renamed "visible", in
the per-proto-tree data.

Move epan_dissect_t to its own header file to make #include dependencies
easier to handle.

Provide epan_dissect_fill_in_columns(), which accepts just the epan_dissect_t*
as an argument.

epan_dissect_new() needs to be followed by epan_dissect_run() for the
dissection to actually take place. Between those two calls,
epan_dissect_prime_dfilter() can be run 0, 1, or multiple times in order to
prime the empty proto_tree with the "intersesting" fields from the dfilter_t.

svn path=/trunk/; revision=4422

1 files changed, 44 insertions, 0 deletions

diff --git a/epan/epan_dissect.h b/epan/epan_dissect.h
new file mode 100644
index 0000000000..424ea60484
--- /dev/null
+++ b/epan/epan_dissect.h
@@ -0,0 +1,44 @@
+/* epan_dissect.h
+ *
+ * $Id: epan_dissect.h,v 1.1 2001/12/18 19:09:03 gram Exp $
+ *
+ * Ethereal Protocol Analyzer Library
+ *
+ * Copyright (c) 2001 by Gerald Combs <gerald@ethereal.com>
+ * 
+ * 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 EPAN_DISSECT_H
+#define EPAN_DISSECT_H
+
+#include "tvbuff.h"
+#include "proto.h"
+#include "packet_info.h"
+
+/* Dissection of a single byte array. Holds tvbuff info as
+ * well as proto_tree info. As long as the epan_dissect_t for a byte
+ * array is in existence, you must not free or move that byte array,
+ * as the structures that the epan_dissect_t contains might have pointers
+ * to addresses in your byte array.
+ */
+struct _epan_dissect_t {
+	tvbuff_t	*tvb;
+	proto_tree	*tree;
+	packet_info	pi;
+};
+
+
+#endif /* EPAN_DISSECT_H */