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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 "UTMetadataRequestExtensionMessage.h"
#include "BDE.h"
#include "bencode.h"
#include "util.h"
#include "a2functional.h"
#include "bittorrent_helper.h"
#include "DlAbortEx.h"
#include "StringFormat.h"
#include "BtMessageFactory.h"
#include "BtMessageDispatcher.h"
#include "Peer.h"
#include "UTMetadataRejectExtensionMessage.h"
#include "UTMetadataDataExtensionMessage.h"
#include "BtConstants.h"
#include "DownloadContext.h"
#include "BtMessage.h"
#include "PieceStorage.h"
namespace aria2 {
UTMetadataRequestExtensionMessage::UTMetadataRequestExtensionMessage
(uint8_t extensionMessageID):UTMetadataExtensionMessage(extensionMessageID) {}
std::string UTMetadataRequestExtensionMessage::getPayload()
{
BDE dict = BDE::dict();
dict["msg_type"] = 0;
dict["piece"] = _index;
return bencode::encode(dict);
}
std::string UTMetadataRequestExtensionMessage::toString() const
{
return strconcat("ut_metadata request piece=", util::uitos(_index));
}
void UTMetadataRequestExtensionMessage::doReceivedAction()
{
const BDE& attrs = _dctx->getAttribute(bittorrent::BITTORRENT);
uint8_t id = _peer->getExtensionMessageID("ut_metadata");
if(!attrs.containsKey(bittorrent::METADATA)) {
SharedHandle<UTMetadataRejectExtensionMessage> m
(new UTMetadataRejectExtensionMessage(id));
m->setIndex(_index);
SharedHandle<BtMessage> msg = _messageFactory->createBtExtendedMessage(m);
_dispatcher->addMessageToQueue(msg);
}else if(_index*METADATA_PIECE_SIZE <
(size_t)attrs[bittorrent::METADATA_SIZE].i()){
SharedHandle<UTMetadataDataExtensionMessage> m
(new UTMetadataDataExtensionMessage(id));
m->setIndex(_index);
m->setTotalSize(attrs[bittorrent::METADATA_SIZE].i());
const BDE& metadata = attrs[bittorrent::METADATA];
std::string::const_iterator begin =
metadata.s().begin()+_index*METADATA_PIECE_SIZE;
std::string::const_iterator end =
(_index+1)*METADATA_PIECE_SIZE <= metadata.s().size()?
metadata.s().begin()+(_index+1)*METADATA_PIECE_SIZE:metadata.s().end();
m->setData(std::string(begin, end));
SharedHandle<BtMessage> msg = _messageFactory->createBtExtendedMessage(m);
_dispatcher->addMessageToQueue(msg);
} else {
throw DL_ABORT_EX
(StringFormat("Metadata piece index is too big. piece=%d", _index).str());
}
}
} // namespace aria2
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