mirror of https://github.com/aria2/aria2
129 lines
4.6 KiB
C++
129 lines
4.6 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 "BtPostDownloadHandler.h"
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#include "prefs.h"
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#include "RequestGroup.h"
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#include "Option.h"
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#include "Logger.h"
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#include "LogFactory.h"
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#include "DownloadHandlerConstants.h"
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#include "File.h"
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#include "PieceStorage.h"
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#include "DiskAdaptor.h"
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#include "util.h"
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#include "ContentTypeRequestGroupCriteria.h"
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#include "Exception.h"
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#include "DownloadContext.h"
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#include "download_helper.h"
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#include "fmt.h"
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#include "ValueBaseBencodeParser.h"
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#include "DiskWriter.h"
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#include "AbstractSingleDiskAdaptor.h"
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#include "BencodeDiskWriter.h"
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#include "RequestGroupMan.h"
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namespace aria2 {
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BtPostDownloadHandler::BtPostDownloadHandler()
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{
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setCriteria(make_unique<ContentTypeRequestGroupCriteria>(getBtContentTypes(),
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getBtExtensions()));
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}
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void BtPostDownloadHandler::getNextRequestGroups(
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std::vector<std::shared_ptr<RequestGroup>>& groups,
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RequestGroup* requestGroup) const
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{
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A2_LOG_INFO(fmt("Generating RequestGroups for Torrent file %s",
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requestGroup->getFirstFilePath().c_str()));
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std::unique_ptr<ValueBase> torrent;
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if (requestGroup->inMemoryDownload()) {
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auto& dw = static_cast<AbstractSingleDiskAdaptor*>(
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requestGroup->getPieceStorage()->getDiskAdaptor().get())
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->getDiskWriter();
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auto bdw = static_cast<bittorrent::BencodeDiskWriter*>(dw.get());
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int error = bdw->finalize();
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if (error == 0) {
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torrent = bdw->getResult();
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}
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}
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else {
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std::string content;
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try {
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requestGroup->getPieceStorage()->getDiskAdaptor()->openExistingFile();
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content =
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util::toString(requestGroup->getPieceStorage()->getDiskAdaptor());
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requestGroup->getPieceStorage()->getDiskAdaptor()->closeFile();
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}
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catch (Exception& e) {
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requestGroup->getPieceStorage()->getDiskAdaptor()->closeFile();
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throw;
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}
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ssize_t error;
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torrent = bittorrent::ValueBaseBencodeParser().parseFinal(
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content.c_str(), content.size(), error);
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}
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if (!torrent) {
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throw DL_ABORT_EX2("Could not parse BitTorrent metainfo",
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error_code::BENCODE_PARSE_ERROR);
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}
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std::vector<std::shared_ptr<RequestGroup>> newRgs;
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createRequestGroupForBitTorrent(newRgs, requestGroup->getOption(),
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std::vector<std::string>(), "",
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torrent.get());
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requestGroup->followedBy(std::begin(newRgs), std::end(newRgs));
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for (auto& rg : newRgs) {
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rg->following(requestGroup->getGID());
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}
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auto mi = createMetadataInfoFromFirstFileEntry(
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requestGroup->getGroupId(), requestGroup->getDownloadContext());
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if (mi) {
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setMetadataInfo(std::begin(newRgs), std::end(newRgs), mi);
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}
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auto rgman = requestGroup->getRequestGroupMan();
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if (rgman && rgman->getKeepRunning() &&
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requestGroup->getOption()->getAsBool(PREF_PAUSE_METADATA)) {
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for (auto& rg : newRgs) {
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rg->setPauseRequested(true);
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}
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}
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groups.insert(std::end(groups), std::begin(newRgs), std::end(newRgs));
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}
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} // namespace aria2
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