5 * Copyright (c) 2000 by Gilbert Ramirez <gram@alumni.rice.edu>
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
29 #include "tvbuff-int.h"
30 #include "proto.h" /* XXX - only used for DISSECTOR_ASSERT, probably a new header file? */
35 /** Func to call when actually freed */
36 tvbuff_free_cb_t free_cb;
40 real_free(tvbuff_t *tvb)
42 struct tvb_real *real_tvb = (struct tvb_real *) tvb;
44 if (real_tvb->free_cb) {
46 * XXX - do this with a union?
48 real_tvb->free_cb((gpointer)tvb->real_data);
53 real_offset(const tvbuff_t *tvb _U_, const guint counter)
58 static const struct tvb_ops tvb_real_ops = {
59 sizeof(struct tvb_real), /* size */
62 real_offset, /* offset */
65 NULL, /* find_guint8 */
66 NULL, /* pbrk_guint8 */
71 tvb_new_real_data(const guint8* data, const guint length, const gint reported_length)
74 struct tvb_real *real_tvb;
76 THROW_ON(reported_length < -1, ReportedBoundsError);
78 tvb = tvb_new(&tvb_real_ops);
80 tvb->real_data = data;
82 tvb->reported_length = reported_length;
83 tvb->initialized = TRUE;
86 * This is the top-level real tvbuff for this data source,
87 * so its data source tvbuff is itself.
91 real_tvb = (struct tvb_real *) tvb;
92 real_tvb->free_cb = NULL;
98 tvb_set_free_cb(tvbuff_t *tvb, const tvbuff_free_cb_t func)
100 struct tvb_real *real_tvb = (struct tvb_real *) tvb;
102 DISSECTOR_ASSERT(tvb);
103 DISSECTOR_ASSERT(tvb->ops == &tvb_real_ops);
104 real_tvb->free_cb = func;
108 tvb_set_child_real_data_tvbuff(tvbuff_t *parent, tvbuff_t *child)
110 DISSECTOR_ASSERT(parent && child);
111 DISSECTOR_ASSERT(parent->initialized);
112 DISSECTOR_ASSERT(child->initialized);
113 DISSECTOR_ASSERT(child->ops == &tvb_real_ops);
114 tvb_add_to_chain(parent, child);
118 tvb_new_child_real_data(tvbuff_t *parent, const guint8* data, const guint length, const gint reported_length)
120 tvbuff_t *tvb = tvb_new_real_data(data, length, reported_length);
122 tvb_set_child_real_data_tvbuff(parent, tvb);