mirror of https://github.com/aria2/aria2
82 lines
3.1 KiB
C++
82 lines
3.1 KiB
C++
/* <!-- 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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#include "IteratableChunkChecksumValidator.h"
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#include "Util.h"
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#include "message.h"
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void IteratableChunkChecksumValidator::validateChunk()
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{
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if(!finished()) {
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string actualChecksum = calculateActualChecksum();
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if(!_chunkChecksum->validateChunk(actualChecksum, _currentIndex)) {
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int64_t offset = ((int64_t)_currentIndex)*_chunkChecksum->getChecksumLength();
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// wrong checksum
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logger->info(EX_INVALID_CHUNK_CHECKSUM,
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_currentIndex,
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Util::llitos(offset, true).c_str(),
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_chunkChecksum->getChecksum(_currentIndex).c_str(),
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actualChecksum.c_str());
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int32_t startIndex;
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int32_t endIndex;
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Util::indexRange(startIndex, endIndex, offset,
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_chunkChecksum->getChecksumLength(),
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_bitfield->getBlockLength());
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_bitfield->unsetBitRange(startIndex, endIndex);
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}
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_currentIndex++;
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}
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}
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string IteratableChunkChecksumValidator::calculateActualChecksum()
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{
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int64_t offset = ((int64_t)_currentIndex)*_chunkChecksum->getChecksumLength();
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int32_t length = _diskWriter->size() < offset+_chunkChecksum->getChecksumLength() ? _diskWriter->size()-offset : _chunkChecksum->getChecksumLength();
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return _diskWriter->messageDigest(offset, length, _chunkChecksum->getAlgo());
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}
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bool IteratableChunkChecksumValidator::canValidate() const
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{
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// We assume file is already opened using DiskWriter::open or openExistingFile.
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return _chunkChecksum->getEstimatedDataLength() >= _diskWriter->size();
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}
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void IteratableChunkChecksumValidator::init()
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{
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_bitfield->setAllBit();
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_currentIndex = 0;
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}
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