mirror of https://github.com/aria2/aria2
pull/1/head
Tatsuhiro Tsujikawa
parent
e199bf8898
commit
1457d7f660
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/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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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 "MetaFileUtil.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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#include <netinet/in.h>
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TrackerUpdateCommand::TrackerUpdateCommand(int cuid, TorrentDownloadEngine*e):Command(cuid), e(e) {
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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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Command* sleepCommand = new SleepCommand(cuid, e, this, 5);
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e->commands.push(sleepCommand);
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return false;
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}
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char* TrackerUpdateCommand::getTrackerResponse(int& 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->finished()) {
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return prepareForRetry();
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}
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MetaEntry* entry = NULL;
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char* trackerResponse = NULL;
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int trackerResponseLength = 0;
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try {
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try {
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trackerResponse = getTrackerResponse(trackerResponseLength);
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entry = MetaFileUtil::bdecoding(trackerResponse,
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trackerResponseLength);
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if(trackerResponse != NULL) {
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delete [] trackerResponse;
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}
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} catch(Exception* e) {
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if(trackerResponse != NULL) {
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delete [] trackerResponse;
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}
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throw;
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}
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Dictionary* response = (Dictionary*)entry;
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Data* failureReason = (Data*)response->get("failure reason");
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if(failureReason != NULL) {
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throw new DlAbortEx("Tracker returned failure reason: %s", failureReason->toString().c_str());
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}
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Data* warningMessage = (Data*)response->get("warning message");
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if(warningMessage != NULL) {
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logger->warn(MSG_TRACKER_WARNING_MESSAGE, warningMessage->toString().c_str());
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}
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Data* trackerId = (Data*)response->get("tracker id");
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if(trackerId != NULL) {
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e->torrentMan->trackerId = trackerId->toString();
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logger->debug("Tracker ID:%s", e->torrentMan->trackerId.c_str());
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}
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Data* interval = (Data*)response->get("interval");
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if(interval != NULL) {
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e->torrentMan->interval = interval->toInt();
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logger->debug("interval:%d", e->torrentMan->interval);
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}
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Data* minInterval = (Data*)response->get("min interval");
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if(minInterval != NULL) {
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e->torrentMan->minInterval = minInterval->toInt();
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logger->debug("min interval:%d", e->torrentMan->minInterval);
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}
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if(e->torrentMan->minInterval > e->torrentMan->interval) {
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e->torrentMan->minInterval = e->torrentMan->interval;
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}
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Data* complete = (Data*)response->get("complete");
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if(complete != NULL) {
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e->torrentMan->complete = complete->toInt();
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logger->debug("complete:%d", e->torrentMan->complete);
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}
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Data* incomplete = (Data*)response->get("incomplete");
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if(incomplete != NULL) {
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e->torrentMan->incomplete = incomplete->toInt();
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logger->debug("incomplete:%d", e->torrentMan->incomplete);
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}
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Data* peers = (Data*)response->get("peers");
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if(peers != NULL) {
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for(int i = 0; i < peers->getLen(); i += 6) {
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unsigned int ipaddr1 = (unsigned char)*(peers->getData()+i);
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unsigned int ipaddr2 = (unsigned char)*(peers->getData()+i+1);
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unsigned int ipaddr3 = (unsigned char)*(peers->getData()+i+2);
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unsigned int ipaddr4 = (unsigned char)*(peers->getData()+i+3);
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unsigned int port = ntohs(*(unsigned short int*)(peers->getData()+i+4));
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char ipaddr[16];
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snprintf(ipaddr, sizeof(ipaddr), "%d.%d.%d.%d",
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ipaddr1, ipaddr2, ipaddr3, ipaddr4);
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Peer* peer = new Peer(ipaddr, port, e->torrentMan->pieceLength,
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e->torrentMan->getTotalLength());
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if(e->torrentMan->addPeer(peer)) {
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logger->debug("adding peer %s:%d", peer->ipaddr.c_str(), peer->port);
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} else {
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delete peer;
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}
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}
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} else {
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logger->info("no peer list received.");
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}
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while(e->torrentMan->isPeerAvailable() &&
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e->torrentMan->connections < MAX_PEER_UPDATE) {
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Peer* peer = e->torrentMan->getPeer();
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int newCuid = e->torrentMan->getNewCuid();
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peer->cuid = newCuid;
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PeerInitiateConnectionCommand* command = new PeerInitiateConnectionCommand(newCuid, peer, e);
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e->commands.push(command);
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logger->debug("adding new command CUID#%d", newCuid);
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}
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if(e->torrentMan->req->getTrackerEvent() == Request::STARTED) {
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e->torrentMan->req->setTrackerEvent(Request::AUTO);
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}
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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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delete(err);
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}
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if(entry != NULL) {
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delete entry;
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}
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e->torrentMan->trackers = 0;
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e->segmentMan->init();
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return prepareForRetry();
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}
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@ -0,0 +1,42 @@
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/* <!-- copyright */
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/*
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* aria2 - a simple utility for downloading files faster
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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/* copyright --> */
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#ifndef _D_TRACKER_UPDATE_COMMAND_H_
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#define _D_TRACKER_UPDATE_COMMAND_H_
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#include "Command.h"
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#include "TorrentDownloadEngine.h"
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#include "Logger.h"
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class TrackerUpdateCommand : public Command {
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private:
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TorrentDownloadEngine* e;
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const Logger* logger;
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bool prepareForRetry();
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char* getTrackerResponse(int& trackerResponseLength);
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public:
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TrackerUpdateCommand(int cuid, TorrentDownloadEngine* e);
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virtual ~TrackerUpdateCommand();
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bool execute();
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};
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#endif // _D_TRACKER_UPDATE_COMMAND_H_
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