mirror of https://github.com/aria2/aria2
83 lines
2.6 KiB
C++
83 lines
2.6 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 "IteratableChecksumValidator.h"
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#include "Util.h"
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#include "message.h"
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#define BUFSIZE 16*1024
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void IteratableChecksumValidator::validateChunk()
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{
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if(!finished()) {
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char data[BUFSIZE];
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int32_t size = _diskWriter->readData(data, sizeof(data), _currentOffset);
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_ctx->digestUpdate(data, size);
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_currentOffset += sizeof(data);
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if(finished()) {
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unsigned char* digest = new unsigned char[_ctx->digestLength()];
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try {
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_ctx->digestFinal(digest);
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if(_checksum->getMessageDigest() != Util::toHex(digest, _ctx->digestLength())) {
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_bitfield->clearAllBit();
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}
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delete [] digest;
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} catch(...) {
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delete [] digest;
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throw;
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}
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}
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}
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}
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bool IteratableChecksumValidator::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 !_checksum.isNull() && !_checksum->isEmpty();
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}
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void IteratableChecksumValidator::init()
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{
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_bitfield->setAllBit();
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_currentOffset = 0;
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_ctx = new MessageDigestContext();
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_ctx->trySetAlgo(_checksum->getAlgo());
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_ctx->digestInit();
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}
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