mirror of https://github.com/aria2/aria2
97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
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/* <!-- copyright */
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/*
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* aria2 - The high speed download utility
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*
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* Copyright (C) 2006 Tatsuhiro Tsujikawa
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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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* In addition, as a special exception, the copyright holders give
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* permission to link the code of portions of this program with the
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* OpenSSL library under certain conditions as described in each
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* individual source file, and distribute linked combinations
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* including the two.
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* You must obey the GNU General Public License in all respects
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* for all of the code used other than OpenSSL. If you modify
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* file(s) with this exception, you may extend this exception to your
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* version of the file(s), but you are not obligated to do so. If you
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* do not wish to do so, delete this exception statement from your
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* version. If you delete this exception statement from all source
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* files in the program, then also delete it here.
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*/
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/* copyright --> */
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#ifndef _D_CHUNK_CHECKSUM_H_
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#define _D_CHUNK_CHECKSUM_H_
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#include "common.h"
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#include "messageDigest.h"
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class ChunkChecksum {
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private:
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MessageDigestContext::DigestAlgo _algo;
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Strings _checksums;
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int32_t _checksumLength;
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public:
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ChunkChecksum(const MessageDigestContext::DigestAlgo& algo,
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const Strings& checksums,
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int32_t checksumLength):
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_algo(algo),
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_checksums(checksums),
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_checksumLength(checksumLength) {}
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bool validateChunk(const string& actualChecksum,
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int32_t checksumIndex) const
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{
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if(checksumIndex < (int32_t)_checksums.size()) {
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return actualChecksum == getChecksum(checksumIndex);
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} else {
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return false;
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}
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}
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int64_t getEstimatedDataLength() const
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{
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return ((int64_t)_checksumLength)*_checksums.size();
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}
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int32_t countChecksum() const
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{
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return _checksums.size();
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}
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string getChecksum(int32_t index) const
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{
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if(index < (int32_t)_checksums.size()) {
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return _checksums[index];
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} else {
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return "";
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}
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}
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int32_t getChecksumLength() const
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{
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return _checksumLength;
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}
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MessageDigestContext::DigestAlgo getAlgo() const
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{
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return _algo;
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}
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};
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typedef SharedHandle<ChunkChecksum> ChunkChecksumHandle;
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#endif // _D_CHUNK_CHECKSUM_H_
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