mirror of https://github.com/aria2/aria2
89 lines
3.2 KiB
C++
89 lines
3.2 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 --> */
|
|
#ifndef _D_PEER_MESSAGE_UTIL_H_
|
|
#define _D_PEER_MESSAGE_UTIL_H_
|
|
|
|
#include "common.h"
|
|
#include <string>
|
|
#include <utility>
|
|
|
|
namespace aria2 {
|
|
|
|
#define MAX_BLOCK_LENGTH (128*1024)
|
|
|
|
class PeerMessageUtil {
|
|
private:
|
|
PeerMessageUtil() {}
|
|
public:
|
|
static uint32_t getIntParam(const unsigned char* msg, size_t pos);
|
|
|
|
static uint16_t getShortIntParam(const unsigned char* msg, size_t pos);
|
|
|
|
static void setIntParam(unsigned char* dest, uint32_t param);
|
|
|
|
static void setShortIntParam(unsigned char* dest, uint16_t param);
|
|
|
|
static uint8_t getId(const unsigned char* msg);
|
|
|
|
static void checkIndex(size_t index, size_t pieces);
|
|
static void checkBegin(uint32_t begin, size_t pieceLength);
|
|
static void checkLength(size_t length);
|
|
static void checkRange(uint32_t begin, size_t length, size_t pieceLength);
|
|
static void checkBitfield(const unsigned char* bitfield,
|
|
size_t bitfieldLength,
|
|
size_t pieces);
|
|
|
|
static void createPeerMessageString(unsigned char* msg,
|
|
size_t msgLength,
|
|
size_t payloadLength,
|
|
uint8_t messageId);
|
|
|
|
/**
|
|
* Creates compact tracker format(6bytes for ipv4 address and port)
|
|
* and stores the results in compact.
|
|
* compact must be at least 6 bytes and pre-allocated.
|
|
* Returns true if creation is successful, otherwise returns false.
|
|
* The example of failure reason is that addr is not numbers-and-dots
|
|
* notation.
|
|
*/
|
|
static bool createcompact(unsigned char* compact, const std::string& addr, uint16_t port);
|
|
|
|
static std::pair<std::string, uint16_t> unpackcompact(const unsigned char* compact);
|
|
};
|
|
|
|
} // namespace aria2
|
|
|
|
#endif // _D_PEER_MESSAGE_UTIL_H_
|