forked from osmocom/wireshark
Add crc7 calculation abillity.
svn path=/trunk/; revision=43680
This commit is contained in:
Anders Broman
parent
5a63e1b79a
commit
02d23f97b0
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@ -41,6 +41,7 @@ set(WSUTIL_FILES
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crc16-plain.c
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crc32.c
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crc6.c
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crc7.c
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crc8.c
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crcdrm.c
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mpeg-audio.c
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@ -30,12 +30,13 @@
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# _SOURCES variables).
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LIBWSUTIL_SRC = \
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airpdcap_wep.c \
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crc6.c \
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crc7.c \
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crc8.c \
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crc10.c \
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crc16.c \
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crc16-plain.c \
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crc32.c \
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crc6.c \
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crc8.c \
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crcdrm.c \
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mpeg-audio.c \
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privileges.c \
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@ -45,11 +46,12 @@ LIBWSUTIL_SRC = \
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# Header files that are not generated from other files
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LIBWSUTIL_INCLUDES = \
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crc6.h \
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crc7.h \
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crc8.h \
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crc10.h \
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crc16.h \
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crc16-plain.h \
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crc32.h \
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crc8.h \
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crcdrm.h \
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mpeg-audio.h \
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privileges.h \
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@ -0,0 +1,94 @@
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/**
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* crc7.c
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*
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* $Id$
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*
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* Functions and types for CRC checks.
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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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*
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* Generated on Wed Jul 11 17:24:30 2012,
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* by pycrc v0.7.10, http://www.tty1.net/pycrc/
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* using the configuration:
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* Width = 7
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* Poly = 0x45
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* XorIn = 0x00
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* ReflectIn = False
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* XorOut = 0x00
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* ReflectOut = False
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* Algorithm = table-driven
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*****************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <stdlib.h>
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#include <stdint.h>
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#include <glib.h>
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#include "crc7.h" /* include the header file generated with pycrc */
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/**
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* Static table used for the table_driven implementation.
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*****************************************************************************/
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static const guint8 crc_table[256] = {
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0x00, 0x8a, 0x9e, 0x14, 0xb6, 0x3c, 0x28, 0xa2, 0xe6, 0x6c, 0x78, 0xf2, 0x50, 0xda, 0xce, 0x44,
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0x46, 0xcc, 0xd8, 0x52, 0xf0, 0x7a, 0x6e, 0xe4, 0xa0, 0x2a, 0x3e, 0xb4, 0x16, 0x9c, 0x88, 0x02,
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0x8c, 0x06, 0x12, 0x98, 0x3a, 0xb0, 0xa4, 0x2e, 0x6a, 0xe0, 0xf4, 0x7e, 0xdc, 0x56, 0x42, 0xc8,
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0xca, 0x40, 0x54, 0xde, 0x7c, 0xf6, 0xe2, 0x68, 0x2c, 0xa6, 0xb2, 0x38, 0x9a, 0x10, 0x04, 0x8e,
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0x92, 0x18, 0x0c, 0x86, 0x24, 0xae, 0xba, 0x30, 0x74, 0xfe, 0xea, 0x60, 0xc2, 0x48, 0x5c, 0xd6,
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0xd4, 0x5e, 0x4a, 0xc0, 0x62, 0xe8, 0xfc, 0x76, 0x32, 0xb8, 0xac, 0x26, 0x84, 0x0e, 0x1a, 0x90,
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0x1e, 0x94, 0x80, 0x0a, 0xa8, 0x22, 0x36, 0xbc, 0xf8, 0x72, 0x66, 0xec, 0x4e, 0xc4, 0xd0, 0x5a,
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0x58, 0xd2, 0xc6, 0x4c, 0xee, 0x64, 0x70, 0xfa, 0xbe, 0x34, 0x20, 0xaa, 0x08, 0x82, 0x96, 0x1c,
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0xae, 0x24, 0x30, 0xba, 0x18, 0x92, 0x86, 0x0c, 0x48, 0xc2, 0xd6, 0x5c, 0xfe, 0x74, 0x60, 0xea,
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0xe8, 0x62, 0x76, 0xfc, 0x5e, 0xd4, 0xc0, 0x4a, 0x0e, 0x84, 0x90, 0x1a, 0xb8, 0x32, 0x26, 0xac,
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0x22, 0xa8, 0xbc, 0x36, 0x94, 0x1e, 0x0a, 0x80, 0xc4, 0x4e, 0x5a, 0xd0, 0x72, 0xf8, 0xec, 0x66,
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0x64, 0xee, 0xfa, 0x70, 0xd2, 0x58, 0x4c, 0xc6, 0x82, 0x08, 0x1c, 0x96, 0x34, 0xbe, 0xaa, 0x20,
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0x3c, 0xb6, 0xa2, 0x28, 0x8a, 0x00, 0x14, 0x9e, 0xda, 0x50, 0x44, 0xce, 0x6c, 0xe6, 0xf2, 0x78,
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0x7a, 0xf0, 0xe4, 0x6e, 0xcc, 0x46, 0x52, 0xd8, 0x9c, 0x16, 0x02, 0x88, 0x2a, 0xa0, 0xb4, 0x3e,
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0xb0, 0x3a, 0x2e, 0xa4, 0x06, 0x8c, 0x98, 0x12, 0x56, 0xdc, 0xc8, 0x42, 0xe0, 0x6a, 0x7e, 0xf4,
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0xf6, 0x7c, 0x68, 0xe2, 0x40, 0xca, 0xde, 0x54, 0x10, 0x9a, 0x8e, 0x04, 0xa6, 0x2c, 0x38, 0xb2
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};
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/**
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* Update the crc value with new data.
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*
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* \param crc The current crc value.
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* \param data Pointer to a buffer of \a data_len bytes.
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* \param data_len Number of bytes in the \a data buffer.
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* \return The updated crc value.
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*****************************************************************************/
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guint8 crc7update(guint8 crc, const unsigned char *data, int data_len)
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{
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unsigned int tbl_idx;
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while (data_len--) {
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tbl_idx = ((crc >> 0) ^ *data) & 0xff;
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crc = (crc_table[tbl_idx] ^ (crc << (8 - 1))) & (0x7f << 1);
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data++;
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}
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return crc & (0x7f << 1);
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}
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@ -0,0 +1,92 @@
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/*
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* crc7.h
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*
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* $Id$
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*
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* Functions and types for CRC checks.
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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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* Generated on Wed Jul 11 17:24:57 2012,
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* by pycrc v0.7.10, http://www.tty1.net/pycrc/
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* using the configuration:
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* Width = 7
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* Poly = 0x45
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* XorIn = 0x00
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* ReflectIn = False
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* XorOut = 0x00
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* ReflectOut = False
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* Algorithm = table-driven
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****************************************************************************
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*/
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#ifndef __CRC7__H__
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#define __CRC7__H__
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#include <stdlib.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* The definition of the used algorithm.
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*****************************************************************************/
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#define CRC_ALGO_TABLE_DRIVEN 1
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/**
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* Calculate the initial crc value.
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*
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* \return The initial crc value.
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*****************************************************************************/
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static inline guint8 crc7init(void)
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{
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return 0x00 << 1;
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}
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/**
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* Update the crc value with new data.
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*
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* \param crc The current crc value.
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* \param data Pointer to a buffer of \a data_len bytes.
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* \param data_len Number of bytes in the \a data buffer.
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* \return The updated crc value.
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*****************************************************************************/
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extern guint8 crc7update(guint8 crc, const unsigned char *data, int data_len);
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/**
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* Calculate the final crc value.
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*
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* \param crc The current crc value.
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* \return The final crc value.
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*****************************************************************************/
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static inline guint8 crc7finalize(guint8 crc)
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{
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return (crc >> 1) ^ 0x00;
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}
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#ifdef __cplusplus
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} /* closing brace for extern "C" */
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#endif
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#endif /* __CRC7__H__ */
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@ -14,6 +14,9 @@ AirPDcapWepDecrypt
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; crc6.c
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update_crc6_by_bytes
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; crc7.c
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crc7update
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; crc10.c
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update_crc10_by_bytes
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