/usr/include/wireshark/epan/crc16-tvb.h is in libwireshark-dev 2.0.2+ga16e22e-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 | /* crc16-tvb.h
* Declaration of CRC-16 tvbuff routines
*
* 2004 Richard van der Hoff <richardv@mxtelecom.com>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef __CRC16_TVB_H__
#define __CRC16_TVB_H__
#include "ws_symbol_export.h"
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/** Compute CRC16 CCITT checksum of a tv buffer.
@param tvb The tv buffer containing the data.
@param len The number of bytes to include in the computation.
@return The CRC16 CCITT checksum. */
WS_DLL_PUBLIC guint16 crc16_ccitt_tvb(tvbuff_t *tvb, guint len);
/** Compute CRC16 X.25 CCITT checksum of a tv buffer.
@param tvb The tv buffer containing the data.
@param len The number of bytes to include in the computation.
@return The CRC16 X.25 CCITT checksum. */
WS_DLL_PUBLIC guint16 crc16_x25_ccitt_tvb(tvbuff_t *tvb, guint len);
/** Compute CRC16 ASSA R3 CCITT checksum of a tv buffer.
@param tvb The tv buffer containing the data.
@param offset The offset into tv buffer containing the data.
@param len The number of bytes to include in the computation.
@return The CRC16 X.25 CCITT checksum. */
WS_DLL_PUBLIC guint16 crc16_r3_ccitt_tvb(tvbuff_t *tvb, int offset, guint len);
/** Compute CRC16 CCITT checksum of a tv buffer.
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@return The CRC16 CCITT checksum. */
WS_DLL_PUBLIC guint16 crc16_ccitt_tvb_offset(tvbuff_t *tvb, guint offset, guint len);
/** Compute CRC16 CCITT checksum of a tv buffer. If computing the
* checksum over multiple tv buffers and you want to feed the partial CRC16
* back in, remember to take the 1's complement of the partial CRC16 first.
@param tvb The tv buffer containing the data.
@param len The number of bytes to include in the computation.
@param seed The seed to use.
@return The CRC16 CCITT checksum (using the given seed). */
WS_DLL_PUBLIC guint16 crc16_ccitt_tvb_seed(tvbuff_t *tvb, guint len, guint16 seed);
/** Compute CRC16 CCITT checksum of a tv buffer. If computing the
* checksum over multiple tv buffers and you want to feed the partial CRC16
* back in, remember to take the 1's complement of the partial CRC16 first.
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@param seed The seed to use.
@return The CRC16 CCITT checksum (using the given seed). */
WS_DLL_PUBLIC guint16 crc16_ccitt_tvb_offset_seed(tvbuff_t *tvb, guint offset,
guint len, guint16 seed);
/** Compute the "plain" CRC16 checksum of a tv buffer using the following
* parameters:
* Width = 16
* Poly = 0x8005
* XorIn = 0x0000
* ReflectIn = True
* XorOut = 0x0000
* ReflectOut = True
* Algorithm = table-driven
* Direct = True
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@return The CRC16 checksum. */
WS_DLL_PUBLIC guint16 crc16_plain_tvb_offset(tvbuff_t *tvb, guint offset, guint len);
/** Compute the "plain" CRC16 checksum of a tv buffer using the following
* parameters:
* Width = 16
* Poly = 0x8005
* XorIn = 0x0000
* ReflectIn = True
* XorOut = 0x0000
* ReflectOut = True
* Algorithm = table-driven
* Direct = True
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@param crc Starting CRC value
@return The CRC16 checksum. */
WS_DLL_PUBLIC guint16 crc16_plain_tvb_offset_seed(tvbuff_t *tvb, guint offset, guint len, guint16 crc);
/** Compute CRC16 checksum of a tv buffer using the parameters
* Width = 16 bits
* Poly = 0x9949
* Reflection = true
* Algorithm = table-driven
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@param seed The seed to use.
@return The CRC16 checksum. */
WS_DLL_PUBLIC guint16 crc16_0x9949_tvb_offset_seed(tvbuff_t *tvb, guint offset, guint len, guint16 seed);
/** Compute CRC16 checksum of a tv buffer using the parameters
* Width = 16 bits
* Poly = 0x3D65
* Reflection = true
* Algorithm = table-driven
@param tvb The tv buffer containing the data.
@param offset The offset into the tv buffer.
@param len The number of bytes to include in the computation.
@param seed The seed to use.
@return The CRC16 checksum. */
WS_DLL_PUBLIC guint16 crc16_0x3D65_tvb_offset_seed(tvbuff_t *tvb, guint offset, guint len, guint16 seed);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* crc16-tvb.h */
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