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XrdCksCalccrc32.hh
Go to the documentation of this file.
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#ifndef __XRDCKSCALCCRC32_HH__
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#define __XRDCKSCALCCRC32_HH__
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/******************************************************************************/
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/* */
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/* X r d C k s C a l c c r c 3 2 . h h */
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/* */
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/* (c) 2011 by the Board of Trustees of the Leland Stanford, Jr., University */
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/* All Rights Reserved */
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/* Produced by Andrew Hanushevsky for Stanford University under contract */
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/* DE-AC02-76-SFO0515 with the Department of Energy */
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/* */
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/* This file is part of the XRootD software suite. */
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/* */
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/* XRootD is free software: you can redistribute it and/or modify it under */
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/* the terms of the GNU Lesser General Public License as published by the */
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/* Free Software Foundation, either version 3 of the License, or (at your */
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/* option) any later version. */
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/* */
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/* XRootD is distributed in the hope that it will be useful, but WITHOUT */
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/* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or */
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/* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public */
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/* License for more details. */
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/* */
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/* You should have received a copy of the GNU Lesser General Public License */
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/* along with XRootD in a file called COPYING.LESSER (LGPL license) and file */
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/* COPYING (GPL license). If not, see <http://www.gnu.org/licenses/>. */
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/* */
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/* The copyright holder's institutional names and contributor's names may not */
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/* be used to endorse or promote products derived from this software without */
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/* specific prior written permission of the institution or contributor. */
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/******************************************************************************/
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#include <cstring>
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#include <sys/types.h>
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#include <netinet/in.h>
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#include <cinttypes>
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#include "
XrdCks/XrdCksCalc.hh
"
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#include "
XrdSys/XrdSysPlatform.hh
"
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class
XrdCksCalccrc32
:
public
XrdCksCalc
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{
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public
:
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char
*
Final
() {
char
buff[
sizeof
(
long
long)];
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long
long
tLcs = TotLen;
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int
i = 0;
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if
(tLcs)
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{
while
(tLcs) {buff[i++] = tLcs & 0xff ; tLcs >>= 8;}
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Update
(buff, i);
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}
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TheResult = C32Result ^ CRC32_XOROT;
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#ifndef Xrd_Big_Endian
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TheResult = htonl(TheResult);
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#endif
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return
(
char
*)&TheResult;
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}
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void
Init
() {C32Result = CRC32_XINIT; TotLen = 0;}
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XrdCksCalc
*
New
() {
return
(
XrdCksCalc
*)
new
XrdCksCalccrc32
;}
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void
Update
(
const
char
*Buff,
int
BLen);
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const
char
*
Type
(
int
&csSz) {csSz =
sizeof
(TheResult);
return
"crc32"
;}
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XrdCksCalccrc32
() {
Init
();}
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virtual
~XrdCksCalccrc32
() {}
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private
:
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static
const
unsigned
int
CRC32_XINIT = 0;
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static
const
unsigned
int
CRC32_XOROT = 0xffffffff;
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static
unsigned
int
crctable[256];
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unsigned
int
C32Result;
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unsigned
int
TheResult;
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long
long
TotLen;
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};
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#endif
XrdCksCalc.hh
XrdSysPlatform.hh
XrdCksCalc
Definition
XrdCksCalc.hh:40
XrdCksCalccrc32
Definition
XrdCksCalccrc32.hh:42
XrdCksCalccrc32::Update
void Update(const char *Buff, int BLen)
Definition
XrdCksCalccrc32.cc:169
XrdCksCalccrc32::XrdCksCalccrc32
XrdCksCalccrc32()
Definition
XrdCksCalccrc32.hh:67
XrdCksCalccrc32::Type
const char * Type(int &csSz)
Definition
XrdCksCalccrc32.hh:65
XrdCksCalccrc32::Final
char * Final()
Definition
XrdCksCalccrc32.hh:45
XrdCksCalccrc32::New
XrdCksCalc * New()
Definition
XrdCksCalccrc32.hh:61
XrdCksCalccrc32::Init
void Init()
Definition
XrdCksCalccrc32.hh:59
XrdCksCalccrc32::~XrdCksCalccrc32
virtual ~XrdCksCalccrc32()
Definition
XrdCksCalccrc32.hh:68
XrdCks
XrdCksCalccrc32.hh
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