90 lines
2.3 KiB
C
90 lines
2.3 KiB
C
/* tvbuff-int.h
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*
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* Structures that most TVB users should not be accessing directly.
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef __TVBUFF_INT_H__
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#define __TVBUFF_INT_H__
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typedef struct {
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/** The backing tvbuff_t */
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struct tvbuff *tvb;
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/** The offset of 'tvb' to which I'm privy */
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guint offset;
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/** The length of 'tvb' to which I'm privy */
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guint length;
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} tvb_backing_t;
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typedef struct {
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GSList *tvbs;
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/* Used for quick testing to see if this
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* is the tvbuff that a COMPOSITE is
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* interested in. */
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guint *start_offsets;
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guint *end_offsets;
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} tvb_comp_t;
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struct tvbuff {
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/* Doubly linked list pointers */
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tvbuff_t *next;
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tvbuff_t *previous;
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/* Record-keeping */
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tvbuff_type type;
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gboolean initialized;
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struct tvbuff *ds_tvb; /**< data source top-level tvbuff */
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/** TVBUFF_SUBSET and TVBUFF_COMPOSITE keep track
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* of the other tvbuff's they use */
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union {
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tvb_backing_t subset;
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tvb_comp_t composite;
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} tvbuffs;
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/** We're either a TVBUFF_REAL_DATA or a
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* TVBUFF_SUBSET that has a backing buffer that
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* has real_data != NULL, or a TVBUFF_COMPOSITE
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* which has flattened its data due to a call
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* to tvb_get_ptr().
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*/
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const guint8 *real_data;
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/** Length of virtual buffer (and/or real_data). */
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guint length;
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/** Reported length. */
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guint reported_length;
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/* Offset from beginning of first TVBUFF_REAL. */
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gint raw_offset;
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/** Func to call when actually freed */
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tvbuff_free_cb_t free_cb;
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};
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#endif
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