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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 "CheckIntegrityCommand.h"
#include "FileAllocationEntry.h"
#include "InitiateConnectionCommandFactory.h"
#include "DlAbortEx.h"
#include "message.h"
void CheckIntegrityCommand::initValidator()
{
_validator = new IteratableChunkChecksumValidator();
_validator->setChunkChecksum(_requestGroup->getChunkChecksum());
_validator->setDiskWriter(_requestGroup->getSegmentMan()->diskWriter);
_validator->setBitfield(_requestGroup->getSegmentMan()->getBitfield());
if(!_validator->canValidate()) {
// insufficient checksums.
throw new DlAbortEx("Insufficient checksums.");
}
_validator->init();
}
bool CheckIntegrityCommand::executeInternal()
{
_validator->validateChunk();
if(_validator->finished()) {
if(_requestGroup->downloadFinished()) {
logger->notice(MSG_DOWNLOAD_ALREADY_COMPLETED, cuid, _requestGroup->getFilePath().c_str());
return true;
}
if(_requestGroup->needsFileAllocation()) {
FileAllocationEntryHandle entry = new FileAllocationEntry(cuid, _req, _requestGroup);
entry->setNextDownloadCommand(_nextDownloadCommand);
_nextDownloadCommand = 0;
_e->_fileAllocationMan->pushFileAllocationEntry(entry);
} else {
if(_nextDownloadCommand) {
_e->commands.push_back(_nextDownloadCommand);
_nextDownloadCommand = 0;
} else {
int32_t numCommandsToGenerate = 15;
Commands commands = _requestGroup->getNextCommand(_e, numCommandsToGenerate);
Command* command = InitiateConnectionCommandFactory::createInitiateConnectionCommand(cuid, _req, _requestGroup, _e);
commands.push_front(command);
_e->addCommand(commands);
}
}
return true;
} else {
_e->commands.push_back(this);
return false;
}
}
bool CheckIntegrityCommand::handleException(Exception* e)
{
logger->error("CUID#%d - Exception caught while validating file integrity.", e, cuid);
delete e;
logger->error(MSG_DOWNLOAD_NOT_COMPLETE, cuid, _requestGroup->getFilePath().c_str());
// TODO this is wrong. There may exist invalid chunk data before catching
// exception. Fix this.
// The one of the solution is having a copy of bitfield before settting its
// all bit to 1. If exception is thrown, then assign the copy to the bitfield.
_requestGroup->markPieceDone(_validator->getCurrentOffset());
return true;
}
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