From 8ceb7d40f9a603d4d792ce7ed904aff69b468456 Mon Sep 17 00:00:00 2001 From: Gilbert Ramirez Date: Fri, 28 Jul 2000 20:03:59 +0000 Subject: 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 --- ptvcursor.c | 78 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) create mode 100644 ptvcursor.c (limited to 'ptvcursor.c') 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 + * + * $Id: ptvcursor.c,v 1.1 2000/07/28 20:03:43 gram Exp $ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs + * 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); +} -- cgit v1.2.3