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