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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2009 Tatsuhiro Tsujikawa
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library under certain conditions as described in each
* individual source file, and distribute linked combinations
* including the two.
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version. If you delete this exception statement from all source
* files in the program, then also delete it here.
*/
/* copyright --> */
#include "UTMetadataDataExtensionMessage.h"
#include "BDE.h"
#include "bencode.h"
#include "util.h"
#include "a2functional.h"
#include "DownloadContext.h"
#include "UTMetadataRequestTracker.h"
#include "PieceStorage.h"
#include "BtConstants.h"
#include "MessageDigestHelper.h"
#include "bittorrent_helper.h"
#include "DiskAdaptor.h"
#include "Piece.h"
#include "LogFactory.h"
namespace aria2 {
UTMetadataDataExtensionMessage::UTMetadataDataExtensionMessage
(uint8_t extensionMessageID):UTMetadataExtensionMessage(extensionMessageID),
_logger(LogFactory::getInstance()) {}
std::string UTMetadataDataExtensionMessage::getPayload()
{
BDE dict = BDE::dict();
dict["msg_type"] = 1;
dict["piece"] = _index;
dict["total_size"] = _totalSize;
return bencode::encode(dict)+_data;
}
std::string UTMetadataDataExtensionMessage::toString() const
{
return strconcat("ut_metadata data piece=", util::uitos(_index));
}
void UTMetadataDataExtensionMessage::doReceivedAction()
{
if(_tracker->tracks(_index)) {
_logger->debug("ut_metadata index=%lu found in tracking list",
static_cast<unsigned long>(_index));
_tracker->remove(_index);
_pieceStorage->getDiskAdaptor()->writeData
(reinterpret_cast<const unsigned char*>(_data.c_str()), _data.size(),
_index*METADATA_PIECE_SIZE);
_pieceStorage->completePiece(_pieceStorage->getPiece(_index));
if(_pieceStorage->downloadFinished()) {
std::string metadata = util::toString(_pieceStorage->getDiskAdaptor());
unsigned char infoHash[INFO_HASH_LENGTH];
MessageDigestHelper::digest(infoHash, INFO_HASH_LENGTH,
MessageDigestContext::SHA1,
metadata.data(), metadata.size());
const BDE& attrs = _dctx->getAttribute(bittorrent::BITTORRENT);
if(std::string(&infoHash[0], &infoHash[INFO_HASH_LENGTH]) ==
attrs[bittorrent::INFO_HASH].s()){
_logger->info("Got ut_metadata");
} else {
_logger->info("Got wrong ut_metadata");
for(size_t i = 0; i < _dctx->getNumPieces(); ++i) {
_pieceStorage->markPieceMissing(i);
}
}
}
} else {
_logger->debug("ut_metadata index=%lu is not tracked",
static_cast<unsigned long>(_index));
}
}
} // namespace aria2
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