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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 --> */
#ifndef _D_BT_PIECE_MESSAGE_H_
#define _D_BT_PIECE_MESSAGE_H_
#include "AbstractBtMessage.h"
#include "BtContext.h"
#include "PieceStorage.h"
#include "BtEvent.h"
#include "AbstractBtEventListener.h"
class BtPieceMessage;
typedef SharedHandle<BtPieceMessage> BtPieceMessageHandle;
class BtPieceMessage : public AbstractBtMessage {
private:
int32_t index;
int32_t begin;
int32_t blockLength;
unsigned char* block;
int32_t leftDataLength;
bool headerSent;
unsigned char* msgHeader;
static int32_t MESSAGE_HEADER_LENGTH;
bool checkPieceHash(const PieceHandle& piece);
void onNewPiece(const PieceHandle& piece);
void onWrongPiece(const PieceHandle& piece);
void erasePieceOnDisk(const PieceHandle& piece);
int32_t sendPieceData(int64_t offset, int32_t length) const;
class BtChokingEventListener : public AbstractBtEventListener {
private:
BtPieceMessage* message;
public:
BtChokingEventListener(BtPieceMessage* message):message(message) {}
virtual bool canHandle(const BtEventHandle& btEvent);
virtual void handleEventInternal(const BtEventHandle& btEvent);
};
typedef SharedHandle<BtChokingEventListener> BtChokingEventListenerHandle;
class BtCancelSendingPieceEventListener : public AbstractBtEventListener {
private:
BtPieceMessage* message;
public:
BtCancelSendingPieceEventListener(BtPieceMessage* message):message(message) {}
virtual bool canHandle(const BtEventHandle& btEvent);
virtual void handleEventInternal(const BtEventHandle& btEvent);
};
typedef SharedHandle<BtCancelSendingPieceEventListener> BtCancelSendingPieceEventListenerHandle;
public:
BtPieceMessage(int32_t index = 0, int32_t begin = 0, int32_t blockLength = 0)
:index(index),
begin(begin),
blockLength(blockLength),
block(0),
leftDataLength(0),
headerSent(false),
msgHeader(0)
{
uploading = true;
addEventListener(new BtChokingEventListener(this));
addEventListener(new BtCancelSendingPieceEventListener(this));
}
virtual ~BtPieceMessage() {
delete [] msgHeader;
delete [] block;
}
static const int8_t ID = 7;
int32_t getIndex() const { return index; }
void setIndex(int32_t index) { this->index = index; }
int32_t getBegin() const { return begin; }
void setBegin(int32_t begin) { this->begin = begin; }
const unsigned char* getBlock() const { return block; }
void setBlock(const unsigned char* block, int32_t blockLength);
int32_t getBlockLength() const { return blockLength; }
void setBlockLength(int32_t blockLength) { this->blockLength = blockLength; }
static BtPieceMessageHandle create(const unsigned char* data, int32_t dataLength);
virtual int8_t getId() { return ID; }
virtual void doReceivedAction();
const unsigned char* getMessageHeader();
int32_t getMessageHeaderLength();
virtual void send();
virtual string toString() const;
void handleChokingEvent(const BtEventHandle& event);
void handleCancelSendingPieceEvent(const BtEventHandle& event);
};
#endif // _D_BT_PIECE_MESSAGE_H_
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