mirror of https://github.com/aria2/aria2
107 lines
3.5 KiB
C++
107 lines
3.5 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 "BtBitfieldMessage.h"
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#include "PeerMessageUtil.h"
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#include "Util.h"
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#include "DlAbortEx.h"
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#include "message.h"
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#include "Peer.h"
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#include "StringFormat.h"
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#include "PieceStorage.h"
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#include <cstring>
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namespace aria2 {
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void BtBitfieldMessage::setBitfield(const unsigned char* bitfield, size_t bitfieldLength) {
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if(this->bitfield == bitfield) {
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return;
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}
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delete [] this->bitfield;
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this->bitfieldLength = bitfieldLength;
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this->bitfield = new unsigned char[this->bitfieldLength];
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memcpy(this->bitfield, bitfield, this->bitfieldLength);
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}
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BtBitfieldMessageHandle
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BtBitfieldMessage::create(const unsigned char* data, size_t dataLength)
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{
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if(dataLength <= 1) {
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throw DlAbortEx
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(StringFormat(EX_INVALID_PAYLOAD_SIZE, "bitfield", dataLength, 1).str());
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}
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uint8_t id = PeerMessageUtil::getId(data);
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if(id != ID) {
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throw DlAbortEx
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(StringFormat(EX_INVALID_BT_MESSAGE_ID, id, "bitfield", ID).str());
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}
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BtBitfieldMessageHandle message(new BtBitfieldMessage());
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message->setBitfield((unsigned char*)data+1, dataLength-1);
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return message;
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}
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void BtBitfieldMessage::doReceivedAction() {
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pieceStorage->updatePieceStats(bitfield, bitfieldLength, peer->getBitfield());
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peer->setBitfield(bitfield, bitfieldLength);
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}
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const unsigned char* BtBitfieldMessage::getMessage() {
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if(!msg) {
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/**
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* len --- 1+bitfieldLength, 4bytes
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* id --- 5, 1byte
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* bitfield --- bitfield, len bytes
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* total: 5+len bytes
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*/
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msgLength = 5+bitfieldLength;
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msg = new unsigned char[msgLength];
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PeerMessageUtil::createPeerMessageString(msg, msgLength,
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1+bitfieldLength, ID);
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memcpy(msg+5, bitfield, bitfieldLength);
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}
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return msg;
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}
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size_t BtBitfieldMessage::getMessageLength() {
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getMessage();
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return msgLength;
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}
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std::string BtBitfieldMessage::toString() const {
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return "bitfield "+Util::toHex(bitfield, bitfieldLength);
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}
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} // namespace aria2
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