mirror of https://github.com/aria2/aria2
269 lines
8.5 KiB
C++
269 lines
8.5 KiB
C++
/* <!-- 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 "BtPieceMessage.h"
|
|
|
|
#include <cstring>
|
|
#include <cstdlib>
|
|
#include <cassert>
|
|
|
|
#include "bittorrent_helper.h"
|
|
#include "util.h"
|
|
#include "message.h"
|
|
#include "DlAbortEx.h"
|
|
#include "MessageDigestHelper.h"
|
|
#include "DiskAdaptor.h"
|
|
#include "Logger.h"
|
|
#include "Peer.h"
|
|
#include "Piece.h"
|
|
#include "PieceStorage.h"
|
|
#include "BtMessageDispatcher.h"
|
|
#include "BtMessageFactory.h"
|
|
#include "BtRequestFactory.h"
|
|
#include "PeerConnection.h"
|
|
#include "StringFormat.h"
|
|
#include "DownloadContext.h"
|
|
|
|
namespace aria2 {
|
|
|
|
const std::string BtPieceMessage::NAME("piece");
|
|
|
|
void BtPieceMessage::setBlock(const unsigned char* block, size_t blockLength) {
|
|
delete [] this->block;
|
|
this->blockLength = blockLength;
|
|
this->block = new unsigned char[this->blockLength];
|
|
memcpy(this->block, block, this->blockLength);
|
|
}
|
|
|
|
BtPieceMessageHandle BtPieceMessage::create(const unsigned char* data, size_t dataLength) {
|
|
bittorrent::assertPayloadLengthGreater(9, dataLength, NAME);
|
|
bittorrent::assertID(ID, data, NAME);
|
|
BtPieceMessageHandle message(new BtPieceMessage());
|
|
message->setIndex(bittorrent::getIntParam(data, 1));
|
|
message->setBegin(bittorrent::getIntParam(data, 5));
|
|
message->setBlock(data+9, dataLength-9);
|
|
return message;
|
|
}
|
|
|
|
void BtPieceMessage::doReceivedAction() {
|
|
if(_metadataGetMode) {
|
|
return;
|
|
}
|
|
RequestSlot slot = dispatcher->getOutstandingRequest(index,
|
|
begin,
|
|
blockLength);
|
|
peer->updateDownloadLength(blockLength);
|
|
if(!RequestSlot::isNull(slot)) {
|
|
peer->snubbing(false);
|
|
peer->updateLatency(slot.getLatencyInMillis());
|
|
PieceHandle piece = pieceStorage->getPiece(index);
|
|
off_t offset = (off_t)index*_downloadContext->getPieceLength()+begin;
|
|
logger->debug(MSG_PIECE_RECEIVED,
|
|
cuid, index, begin, blockLength, offset, slot.getBlockIndex());
|
|
pieceStorage->getDiskAdaptor()->writeData(block, blockLength, offset);
|
|
piece->completeBlock(slot.getBlockIndex());
|
|
logger->debug(MSG_PIECE_BITFIELD, cuid,
|
|
util::toHex(piece->getBitfield(),
|
|
piece->getBitfieldLength()).c_str());
|
|
piece->updateHash(begin, block, blockLength);
|
|
dispatcher->removeOutstandingRequest(slot);
|
|
if(piece->pieceComplete()) {
|
|
if(checkPieceHash(piece)) {
|
|
onNewPiece(piece);
|
|
} else {
|
|
onWrongPiece(piece);
|
|
}
|
|
}
|
|
} else {
|
|
logger->debug("CUID#%d - RequestSlot not found, index=%d, begin=%d",
|
|
cuid, index, begin);
|
|
}
|
|
}
|
|
|
|
size_t BtPieceMessage::MESSAGE_HEADER_LENGTH = 13;
|
|
|
|
const unsigned char* BtPieceMessage::getMessageHeader() {
|
|
if(!msgHeader) {
|
|
/**
|
|
* len --- 9+blockLength, 4bytes
|
|
* id --- 7, 1byte
|
|
* index --- index, 4bytes
|
|
* begin --- begin, 4bytes
|
|
* total: 13bytes
|
|
*/
|
|
msgHeader = new unsigned char[MESSAGE_HEADER_LENGTH];
|
|
bittorrent::createPeerMessageString(msgHeader, MESSAGE_HEADER_LENGTH,
|
|
9+blockLength, ID);
|
|
bittorrent::setIntParam(&msgHeader[5], index);
|
|
bittorrent::setIntParam(&msgHeader[9], begin);
|
|
}
|
|
return msgHeader;
|
|
}
|
|
|
|
size_t BtPieceMessage::getMessageHeaderLength() {
|
|
return MESSAGE_HEADER_LENGTH;
|
|
}
|
|
|
|
void BtPieceMessage::send() {
|
|
if(invalidate) {
|
|
return;
|
|
}
|
|
if(!sendingInProgress) {
|
|
logger->info(MSG_SEND_PEER_MESSAGE,
|
|
cuid, peer->ipaddr.c_str(), peer->port,
|
|
toString().c_str());
|
|
getMessageHeader();
|
|
peerConnection->sendMessage(msgHeader, getMessageHeaderLength());
|
|
off_t pieceDataOffset =
|
|
(off_t)index*_downloadContext->getPieceLength()+begin;
|
|
size_t writtenLength = sendPieceData(pieceDataOffset, blockLength);
|
|
logger->debug("msglength = %lu bytes",
|
|
static_cast<unsigned long>(getMessageHeaderLength()+
|
|
blockLength));
|
|
peer->updateUploadLength(writtenLength);
|
|
} else {
|
|
ssize_t writtenLength = peerConnection->sendPendingData();
|
|
peer->updateUploadLength(writtenLength);
|
|
}
|
|
sendingInProgress = !peerConnection->sendBufferIsEmpty();
|
|
}
|
|
|
|
size_t BtPieceMessage::sendPieceData(off_t offset, size_t length) const {
|
|
assert(length <= 16*1024);
|
|
unsigned char buf[16*1024];
|
|
if(pieceStorage->getDiskAdaptor()->readData(buf, length, offset) ==
|
|
static_cast<ssize_t>(length)) {
|
|
return peerConnection->sendMessage(buf, length);
|
|
} else {
|
|
throw DL_ABORT_EX(EX_DATA_READ);
|
|
}
|
|
}
|
|
|
|
std::string BtPieceMessage::toString() const {
|
|
return strconcat(NAME, " index=", util::itos(index), ", begin=",
|
|
util::itos(begin), ", length=", util::itos(blockLength));
|
|
}
|
|
|
|
bool BtPieceMessage::checkPieceHash(const PieceHandle& piece) {
|
|
if(piece->isHashCalculated()) {
|
|
logger->debug("Hash is available!! index=%lu",
|
|
static_cast<unsigned long>(piece->getIndex()));
|
|
return
|
|
piece->getHashString()==_downloadContext->getPieceHash(piece->getIndex());
|
|
} else {
|
|
off_t offset = (off_t)piece->getIndex()*_downloadContext->getPieceLength();
|
|
|
|
return MessageDigestHelper::staticSHA1Digest(pieceStorage->getDiskAdaptor(), offset, piece->getLength())
|
|
== _downloadContext->getPieceHash(piece->getIndex());
|
|
}
|
|
}
|
|
|
|
void BtPieceMessage::onNewPiece(const PieceHandle& piece) {
|
|
logger->info(MSG_GOT_NEW_PIECE, cuid, piece->getIndex());
|
|
pieceStorage->completePiece(piece);
|
|
pieceStorage->advertisePiece(cuid, piece->getIndex());
|
|
}
|
|
|
|
void BtPieceMessage::onWrongPiece(const PieceHandle& piece) {
|
|
logger->info(MSG_GOT_WRONG_PIECE, cuid, piece->getIndex());
|
|
erasePieceOnDisk(piece);
|
|
piece->clearAllBlock();
|
|
piece->destroyHashContext();
|
|
requestFactory->removeTargetPiece(piece);
|
|
}
|
|
|
|
void BtPieceMessage::erasePieceOnDisk(const PieceHandle& piece) {
|
|
size_t BUFSIZE = 4096;
|
|
unsigned char buf[BUFSIZE];
|
|
memset(buf, 0, BUFSIZE);
|
|
off_t offset = (off_t)piece->getIndex()*_downloadContext->getPieceLength();
|
|
div_t res = div(piece->getLength(), BUFSIZE);
|
|
for(int i = 0; i < res.quot; ++i) {
|
|
pieceStorage->getDiskAdaptor()->writeData(buf, BUFSIZE, offset);
|
|
offset += BUFSIZE;
|
|
}
|
|
if(res.rem > 0) {
|
|
pieceStorage->getDiskAdaptor()->writeData(buf, res.rem, offset);
|
|
}
|
|
}
|
|
|
|
void BtPieceMessage::onChokingEvent(const BtChokingEvent& event)
|
|
{
|
|
if(!invalidate &&
|
|
!sendingInProgress &&
|
|
!peer->isInAmAllowedIndexSet(index)) {
|
|
logger->debug(MSG_REJECT_PIECE_CHOKED,
|
|
cuid,
|
|
index,
|
|
begin,
|
|
blockLength);
|
|
|
|
if(peer->isFastExtensionEnabled()) {
|
|
BtMessageHandle rej = messageFactory->createRejectMessage(index,
|
|
begin,
|
|
blockLength);
|
|
dispatcher->addMessageToQueue(rej);
|
|
}
|
|
invalidate = true;
|
|
}
|
|
}
|
|
|
|
void BtPieceMessage::onCancelSendingPieceEvent
|
|
(const BtCancelSendingPieceEvent& event)
|
|
{
|
|
if(!invalidate &&
|
|
!sendingInProgress &&
|
|
index == event.getIndex() &&
|
|
begin == event.getBegin() &&
|
|
blockLength == event.getLength()) {
|
|
logger->debug(MSG_REJECT_PIECE_CANCEL,
|
|
cuid, index, begin, blockLength);
|
|
if(peer->isFastExtensionEnabled()) {
|
|
BtMessageHandle rej = messageFactory->createRejectMessage(index,
|
|
begin,
|
|
blockLength);
|
|
dispatcher->addMessageToQueue(rej);
|
|
}
|
|
invalidate = true;
|
|
}
|
|
}
|
|
|
|
void BtPieceMessage::setDownloadContext
|
|
(const SharedHandle<DownloadContext>& downloadContext)
|
|
{
|
|
_downloadContext = downloadContext;
|
|
}
|
|
|
|
} // namespace aria2
|