mirror of https://github.com/aria2/aria2
105 lines
3.9 KiB
C++
105 lines
3.9 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) 2009 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 "UTMetadataRequestExtensionMessage.h"
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#include "BDE.h"
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#include "bencode.h"
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#include "util.h"
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#include "a2functional.h"
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#include "bittorrent_helper.h"
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#include "DlAbortEx.h"
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#include "StringFormat.h"
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#include "BtMessageFactory.h"
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#include "BtMessageDispatcher.h"
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#include "Peer.h"
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#include "UTMetadataRejectExtensionMessage.h"
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#include "UTMetadataDataExtensionMessage.h"
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#include "BtConstants.h"
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#include "DownloadContext.h"
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#include "BtMessage.h"
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#include "PieceStorage.h"
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namespace aria2 {
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UTMetadataRequestExtensionMessage::UTMetadataRequestExtensionMessage
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(uint8_t extensionMessageID):UTMetadataExtensionMessage(extensionMessageID) {}
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std::string UTMetadataRequestExtensionMessage::getPayload()
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{
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BDE dict = BDE::dict();
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dict["msg_type"] = 0;
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dict["piece"] = getIndex();
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return bencode::encode(dict);
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}
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std::string UTMetadataRequestExtensionMessage::toString() const
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{
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return strconcat("ut_metadata request piece=", util::uitos(getIndex()));
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}
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void UTMetadataRequestExtensionMessage::doReceivedAction()
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{
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const BDE& attrs = _dctx->getAttribute(bittorrent::BITTORRENT);
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uint8_t id = _peer->getExtensionMessageID("ut_metadata");
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if(!attrs.containsKey(bittorrent::METADATA)) {
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SharedHandle<UTMetadataRejectExtensionMessage> m
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(new UTMetadataRejectExtensionMessage(id));
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m->setIndex(getIndex());
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SharedHandle<BtMessage> msg = _messageFactory->createBtExtendedMessage(m);
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_dispatcher->addMessageToQueue(msg);
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}else if(getIndex()*METADATA_PIECE_SIZE <
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(size_t)attrs[bittorrent::METADATA_SIZE].i()){
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SharedHandle<UTMetadataDataExtensionMessage> m
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(new UTMetadataDataExtensionMessage(id));
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m->setIndex(getIndex());
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m->setTotalSize(attrs[bittorrent::METADATA_SIZE].i());
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const BDE& metadata = attrs[bittorrent::METADATA];
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std::string::const_iterator begin =
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metadata.s().begin()+getIndex()*METADATA_PIECE_SIZE;
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std::string::const_iterator end =
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(getIndex()+1)*METADATA_PIECE_SIZE <= metadata.s().size()?
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metadata.s().begin()+(getIndex()+1)*METADATA_PIECE_SIZE:
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metadata.s().end();
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m->setData(std::string(begin, end));
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SharedHandle<BtMessage> msg = _messageFactory->createBtExtendedMessage(m);
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_dispatcher->addMessageToQueue(msg);
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} else {
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throw DL_ABORT_EX
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(StringFormat
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("Metadata piece index is too big. piece=%d", getIndex()).str());
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}
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}
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} // namespace aria2
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