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/* <!-- copyright */
/*
* aria2 - The high speed download utility
*
* Copyright (C) 2006 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 "BtPostDownloadHandler.h"
#include "prefs.h"
#include "RequestGroup.h"
#include "Option.h"
#include "Logger.h"
#include "LogFactory.h"
#include "DownloadHandlerConstants.h"
#include "File.h"
#include "PieceStorage.h"
#include "DiskAdaptor.h"
#include "util.h"
#include "ContentTypeRequestGroupCriteria.h"
#include "Exception.h"
#include "DownloadContext.h"
#include "download_helper.h"
#include "fmt.h"
#include "ValueBaseBencodeParser.h"
#include "DiskWriter.h"
#include "AbstractSingleDiskAdaptor.h"
#include "BencodeDiskWriter.h"
#include "RequestGroupMan.h"
namespace aria2 {
BtPostDownloadHandler::BtPostDownloadHandler()
{
setCriteria(make_unique<ContentTypeRequestGroupCriteria>
(getBtContentTypes(), getBtExtensions()));
}
void BtPostDownloadHandler::getNextRequestGroups
(std::vector<std::shared_ptr<RequestGroup> >& groups,
RequestGroup* requestGroup) const
{
A2_LOG_INFO(fmt("Generating RequestGroups for Torrent file %s",
requestGroup->getFirstFilePath().c_str()));
std::unique_ptr<ValueBase> torrent;
if(requestGroup->inMemoryDownload()) {
auto& dw = static_cast<AbstractSingleDiskAdaptor*>
(requestGroup->getPieceStorage()->getDiskAdaptor().get())
->getDiskWriter();
auto bdw = static_cast<bittorrent::BencodeDiskWriter*>(dw.get());
int error = bdw->finalize();
if(error == 0) {
torrent = bdw->getResult();
}
} else {
std::string content;
try {
requestGroup->getPieceStorage()->getDiskAdaptor()->openExistingFile();
content = util::toString(requestGroup->getPieceStorage()
->getDiskAdaptor());
requestGroup->getPieceStorage()->getDiskAdaptor()->closeFile();
} catch(Exception& e) {
requestGroup->getPieceStorage()->getDiskAdaptor()->closeFile();
throw;
}
ssize_t error;
torrent = bittorrent::ValueBaseBencodeParser().parseFinal
(content.c_str(), content.size(), error);
}
if(!torrent) {
throw DL_ABORT_EX2("Could not parse BitTorrent metainfo",
error_code::BENCODE_PARSE_ERROR);
}
std::vector<std::shared_ptr<RequestGroup>> newRgs;
createRequestGroupForBitTorrent(newRgs, requestGroup->getOption(),
std::vector<std::string>(),
"",
torrent.get());
requestGroup->followedBy(std::begin(newRgs), std::end(newRgs));
auto mi =
createMetadataInfoFromFirstFileEntry(requestGroup->getGroupId(),
requestGroup->getDownloadContext());
if(mi) {
setMetadataInfo(std::begin(newRgs), std::end(newRgs), mi);
}
auto rgman = requestGroup->getRequestGroupMan();
if(rgman && rgman->getKeepRunning() &&
requestGroup->getOption()->getAsBool(PREF_PAUSE_METADATA)) {
for(auto& rg : newRgs) {
rg->setPauseRequested(true);
}
}
groups.insert(std::end(groups), std::begin(newRgs), std::end(newRgs));
}
} // namespace aria2
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