mirror of https://github.com/aria2/aria2
133 lines
4.1 KiB
C++
133 lines
4.1 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 "TrackerUpdateCommand.h"
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#include "LogFactory.h"
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#include "DlAbortEx.h"
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#include "message.h"
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#include "PeerInitiateConnectionCommand.h"
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#include "SleepCommand.h"
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#include "Util.h"
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extern PeerHandle nullPeer;
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TrackerUpdateCommand::TrackerUpdateCommand(int cuid,
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TorrentDownloadEngine* e,
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const BtContextHandle& btContext):
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BtContextAwareCommand(cuid, btContext), e(e)
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{
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logger = LogFactory::getInstance();
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}
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TrackerUpdateCommand::~TrackerUpdateCommand() {}
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bool TrackerUpdateCommand::prepareForRetry() {
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e->commands.push_back(this);
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return false;
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}
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char* TrackerUpdateCommand::getTrackerResponse(size_t& trackerResponseLength) {
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int maxBufLength = 2048;
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char* buf = new char[maxBufLength];
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int bufLength = 0;
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char data[2048];
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try {
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while(1) {
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int dataLength = e->segmentMan->diskWriter->readData(data, sizeof(data), bufLength);
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if(bufLength+dataLength >= maxBufLength) {
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maxBufLength = Util::expandBuffer(&buf, bufLength, bufLength+dataLength);
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}
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memcpy(buf+bufLength, data, dataLength);
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bufLength += dataLength;
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if(dataLength != sizeof(data)) {
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break;
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}
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}
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trackerResponseLength = bufLength;
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return buf;
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} catch(Exception* e) {
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delete [] buf;
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throw;
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}
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}
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bool TrackerUpdateCommand::execute() {
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if(e->segmentMan->errors > 0 && btRuntime->isHalt()) {
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return true;
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}
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if(!e->segmentMan->finished()) {
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return prepareForRetry();
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}
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char* trackerResponse = NULL;
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size_t trackerResponseLength = 0;
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try {
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trackerResponse = getTrackerResponse(trackerResponseLength);
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btAnnounce->processAnnounceResponse(trackerResponse,
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trackerResponseLength);
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while(!btRuntime->isHalt() && btRuntime->lessThanMinPeer()) {
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PeerHandle peer = peerStorage->getUnusedPeer();
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if(peer == nullPeer) {
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break;
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}
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int newCuid = btRuntime->getNewCuid();
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peer->cuid = newCuid;
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PeerInitiateConnectionCommand* command =
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new PeerInitiateConnectionCommand(newCuid,
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peer,
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e,
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btContext);
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e->commands.push_back(command);
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logger->debug("CUID#%d - Adding new command CUID#%d", cuid, newCuid);
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}
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btAnnounce->announceSuccess();
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btAnnounce->resetAnnounce();
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e->segmentMan->init();
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} catch(Exception* err) {
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logger->error("CUID#%d - Error occurred while processing tracker response.", cuid, err);
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e->segmentMan->errors++;
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delete err;
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}
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if(trackerResponse) {
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delete [] trackerResponse;
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}
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if(btRuntime->isHalt()) {
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return true;
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} else {
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return prepareForRetry();
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}
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}
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