forked from osmocom/wireshark
85 lines
2.7 KiB
C
85 lines
2.7 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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* 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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struct tvbuff;
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struct tvb_ops {
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gsize tvb_size;
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void (*tvb_free)(struct tvbuff *tvb);
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guint (*tvb_offset)(const struct tvbuff *tvb, guint counter);
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const guint8 *(*tvb_get_ptr)(struct tvbuff *tvb, guint abs_offset, guint abs_length);
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void *(*tvb_memcpy)(struct tvbuff *tvb, void *target, guint offset, guint length);
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gint (*tvb_find_guint8)(tvbuff_t *tvb, guint abs_offset, guint limit, guint8 needle);
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gint (*tvb_ws_mempbrk_pattern_guint8)(tvbuff_t *tvb, guint abs_offset, guint limit, const ws_mempbrk_pattern* pattern, guchar *found_needle);
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tvbuff_t *(*tvb_clone)(tvbuff_t *tvb, guint abs_offset, guint abs_length);
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};
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/*
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* Tvbuff flags.
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*/
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#define TVBUFF_FRAGMENT 0x00000001 /* this is a fragment */
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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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/* Record-keeping */
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const struct tvb_ops *ops;
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gboolean initialized;
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guint flags;
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struct tvbuff *ds_tvb; /**< data source top-level tvbuff */
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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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};
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WS_DLL_PUBLIC tvbuff_t *tvb_new(const struct tvb_ops *ops);
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tvbuff_t *tvb_new_proxy(tvbuff_t *backing);
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void tvb_add_to_chain(tvbuff_t *parent, tvbuff_t *child);
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guint tvb_offset_from_real_beginning_counter(const tvbuff_t *tvb, const guint counter);
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void tvb_check_offset_length(const tvbuff_t *tvb, const gint offset, gint const length_val, guint *offset_ptr, guint *length_ptr);
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#endif
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