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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 "BtDependency.h"
#include "RequestGroup.h"
#include "Option.h"
#include "LogFactory.h"
#include "Logger.h"
#include "DownloadContext.h"
#include "RecoverableException.h"
#include "message.h"
#include "prefs.h"
#include "Util.h"
#include "PieceStorage.h"
#include "DiskAdaptor.h"
#include "File.h"
#include "bittorrent_helper.h"
#include "DlAbortEx.h"
namespace aria2 {
BtDependency::BtDependency(const RequestGroupWeakHandle& dependant,
const RequestGroupHandle& dependee):
_dependant(dependant),
_dependee(dependee),
_logger(LogFactory::getInstance()) {}
BtDependency::~BtDependency() {}
bool BtDependency::resolve()
{
if(_dependee->getNumCommand() == 0 && _dependee->downloadFinished()) {
RequestGroupHandle dependee = _dependee;
// cut reference here
_dependee.reset();
SharedHandle<DownloadContext> context(new DownloadContext());
context->setDir(_dependant->getDownloadContext()->getDir());
try {
DiskAdaptorHandle diskAdaptor =
dependee->getPieceStorage()->getDiskAdaptor();
diskAdaptor->openExistingFile();
std::string content = Util::toString(diskAdaptor);
bittorrent::loadFromMemory
(content, context, File(dependee->getFirstFilePath()).getBasename());
if(context->getFileEntries().size() !=
_dependant->getDownloadContext()->getFileEntries().size()) {
throw DL_ABORT_EX("The number of file in torrent doesn't match to"
" the dependant.");
}
// Copy file path in _dependant's FileEntries to newly created
// context's FileEntries to endorse the path structure of
// _dependant. URIs and singleHostMultiConnection are also copied.
for(std::vector<SharedHandle<FileEntry> >::const_iterator s =
_dependant->getDownloadContext()->getFileEntries().begin(),
d = context->getFileEntries().begin();
d != context->getFileEntries().end(); ++s, ++d) {
(*d)->setPath((*s)->getPath());
(*d)->addUris((*s)->getRemainingUris().begin(),
(*s)->getRemainingUris().end());
if(!(*s)->isSingleHostMultiConnectionEnabled()) {
(*d)->disableSingleHostMultiConnection();
}
}
} catch(RecoverableException& e) {
_logger->error(EX_EXCEPTION_CAUGHT, e);
_logger->info("BtDependency for GID#%d failed. Go without Bt.",
_dependant->getGID());
return true;
}
_logger->debug("Dependency resolved for GID#%d", _dependant->getGID());
_dependant->setDownloadContext(context);
context->setOwnerRequestGroup(_dependant.get());
return true;
} else if(_dependee->getNumCommand() == 0) {
// _dependee's download failed.
// cut reference here
_dependee.reset();
_logger->debug("BtDependency for GID#%d failed. Go without Bt.",
_dependant->getGID());
return true;
} else {
return false;
}
}
} // namespace aria2
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