mirror of https://github.com/aria2/aria2
118 lines
4.2 KiB
C++
118 lines
4.2 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 "bencode2.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 "fmt.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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dispatcher_(0),
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messageFactory_(0)
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{}
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UTMetadataRequestExtensionMessage::~UTMetadataRequestExtensionMessage() {}
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std::string UTMetadataRequestExtensionMessage::getPayload()
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{
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Dict dict;
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dict.put("msg_type", Integer::g(0));
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dict.put("piece", Integer::g(getIndex()));
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return bencode2::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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SharedHandle<TorrentAttribute> attrs = bittorrent::getTorrentAttrs(dctx_);
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uint8_t id = peer_->getExtensionMessageID("ut_metadata");
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if(attrs->metadata.empty()) {
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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 < attrs->metadataSize) {
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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->metadataSize);
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std::string::const_iterator begin =
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attrs->metadata.begin()+getIndex()*METADATA_PIECE_SIZE;
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std::string::const_iterator end =
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(getIndex()+1)*METADATA_PIECE_SIZE <= attrs->metadata.size()?
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attrs->metadata.begin()+(getIndex()+1)*METADATA_PIECE_SIZE:
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attrs->metadata.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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(fmt("Metadata piece index is too big. piece=%lu",
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static_cast<unsigned long>(getIndex())));
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}
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}
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void UTMetadataRequestExtensionMessage::setDownloadContext
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(const SharedHandle<DownloadContext>& dctx)
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{
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dctx_ = dctx;
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}
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void UTMetadataRequestExtensionMessage::setPeer(const SharedHandle<Peer>& peer)
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{
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peer_ = peer;
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}
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} // namespace aria2
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