1 /* <!-- copyright */ 2 /* 3 * aria2 - The high speed download utility 4 * 5 * Copyright (C) 2006 Tatsuhiro Tsujikawa 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2 of the License, or 10 * (at your option) any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 20 * 21 * In addition, as a special exception, the copyright holders give 22 * permission to link the code of portions of this program with the 23 * OpenSSL library under certain conditions as described in each 24 * individual source file, and distribute linked combinations 25 * including the two. 26 * You must obey the GNU General Public License in all respects 27 * for all of the code used other than OpenSSL. If you modify 28 * file(s) with this exception, you may extend this exception to your 29 * version of the file(s), but you are not obligated to do so. If you 30 * do not wish to do so, delete this exception statement from your 31 * version. If you delete this exception statement from all source 32 * files in the program, then also delete it here. 33 */ 34 /* copyright --> */ 35 #ifndef D_BT_PIECE_MESSAGE_H 36 #define D_BT_PIECE_MESSAGE_H 37 38 #include "AbstractBtMessage.h" 39 40 namespace aria2 { 41 42 class Piece; 43 class DownloadContext; 44 class PeerStorage; 45 46 class BtPieceMessage : public AbstractBtMessage { 47 private: 48 size_t index_; 49 int32_t begin_; 50 int32_t blockLength_; 51 const unsigned char* data_; 52 DownloadContext* downloadContext_; 53 PeerStorage* peerStorage_; 54 55 bool checkPieceHash(const std::shared_ptr<Piece>& piece); 56 57 void onNewPiece(const std::shared_ptr<Piece>& piece); 58 59 void onWrongPiece(const std::shared_ptr<Piece>& piece); 60 61 void pushPieceData(int64_t offset, int32_t length) const; 62 63 public: 64 BtPieceMessage(size_t index = 0, int32_t begin = 0, int32_t blockLength = 0); 65 66 virtual ~BtPieceMessage(); 67 68 static const uint8_t ID = 7; 69 70 static const char NAME[]; 71 getIndex()72 size_t getIndex() const { return index_; } 73 setIndex(size_t index)74 void setIndex(size_t index) { index_ = index; } 75 getBegin()76 int32_t getBegin() const { return begin_; } 77 setBegin(int32_t begin)78 void setBegin(int32_t begin) { begin_ = begin; } 79 getBlock()80 const unsigned char* getBlock() const { return data_ + 9; } 81 getBlockLength()82 int32_t getBlockLength() const { return blockLength_; } 83 84 // Sets message payload data. Caller must not change or free data 85 // before doReceivedAction(). 86 void setMsgPayload(const unsigned char* data); 87 setBlockLength(int32_t blockLength)88 void setBlockLength(int32_t blockLength) { blockLength_ = blockLength; } 89 90 void setDownloadContext(DownloadContext* downloadContext); 91 92 void setPeerStorage(PeerStorage* peerStorage); 93 94 static std::unique_ptr<BtPieceMessage> create(const unsigned char* data, 95 size_t dataLength); 96 97 virtual void doReceivedAction() CXX11_OVERRIDE; 98 99 void createMessageHeader(unsigned char* msgHeader) const; 100 101 size_t getMessageHeaderLength(); 102 103 virtual void send() CXX11_OVERRIDE; 104 105 virtual std::string toString() const CXX11_OVERRIDE; 106 107 virtual void onChokingEvent(const BtChokingEvent& event) CXX11_OVERRIDE; 108 109 virtual void onCancelSendingPieceEvent(const BtCancelSendingPieceEvent& event) 110 CXX11_OVERRIDE; 111 }; 112 113 } // namespace aria2 114 115 #endif // D_BT_PIECE_MESSAGE_H 116