mirror of https://github.com/aria2/aria2
107 lines
3.4 KiB
C++
107 lines
3.4 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 <cstdlib>
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#include "util.h"
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#include "message.h"
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#include "PieceStorage.h"
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#include "MessageDigest.h"
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#include "DiskAdaptor.h"
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#include "FileEntry.h"
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#include "BitfieldMan.h"
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#include "DownloadContext.h"
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#include "LogFactory.h"
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#include "fmt.h"
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namespace aria2 {
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IteratableChecksumValidator::IteratableChecksumValidator
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(const SharedHandle<DownloadContext>& dctx,
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const SharedHandle<PieceStorage>& pieceStorage)
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: dctx_(dctx),
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pieceStorage_(pieceStorage),
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currentOffset_(0)
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{}
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IteratableChecksumValidator::~IteratableChecksumValidator() {}
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void IteratableChecksumValidator::validateChunk()
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{
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// Don't guard with !finished() to allow zero-length file to be
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// verified.
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unsigned char buf[4096];
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size_t length = pieceStorage_->getDiskAdaptor()->readData
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(buf, sizeof(buf), currentOffset_);
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ctx_->update(buf, length);
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currentOffset_ += length;
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if(finished()) {
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std::string actualDigest = ctx_->digest();
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if(dctx_->getDigest() == actualDigest) {
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pieceStorage_->markAllPiecesDone();
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dctx_->setChecksumVerified(true);
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} else {
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A2_LOG_INFO(fmt("Checksum validation failed. expected=%s, actual=%s",
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util::toHex(dctx_->getDigest()).c_str(),
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util::toHex(actualDigest).c_str()));
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BitfieldMan bitfield(dctx_->getPieceLength(), dctx_->getTotalLength());
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pieceStorage_->setBitfield(bitfield.getBitfield(), bitfield.getBitfieldLength());
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}
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}
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}
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bool IteratableChecksumValidator::finished() const
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{
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if(currentOffset_ >= dctx_->getTotalLength()) {
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return true;
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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 IteratableChecksumValidator::getTotalLength() const
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{
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return dctx_->getTotalLength();
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}
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void IteratableChecksumValidator::init()
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{
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currentOffset_ = 0;
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ctx_ = MessageDigest::create(dctx_->getHashType());
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}
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} // namespace aria2
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