You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
4.7 KiB
135 lines
4.7 KiB
/*
|
|
This file is part of cpp-ethereum.
|
|
|
|
cpp-ethereum 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 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
/** @file BlockInfo.h
|
|
* @author Gav Wood <i@gavwood.com>
|
|
* @date 2014
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <libdevcore/Common.h>
|
|
#include <libdevcore/RLP.h>
|
|
#include "CommonEth.h"
|
|
|
|
namespace dev
|
|
{
|
|
namespace eth
|
|
{
|
|
|
|
extern u256 c_genesisDifficulty;
|
|
|
|
enum IncludeNonce
|
|
{
|
|
WithoutNonce = 0,
|
|
WithNonce = 1
|
|
};
|
|
|
|
/** @brief Encapsulation of a block header.
|
|
* Class to contain all of a block header's data. It is able to parse a block header and populate
|
|
* from some given RLP block serialisation with the static fromHeader(), through the method
|
|
* populateFromHeader(). This will conduct a minimal level of verification. In this case extra
|
|
* verification can be performed through verifyInternals() and verifyParent().
|
|
*
|
|
* The object may also be populated from an entire block through the explicit
|
|
* constructor BlockInfo(bytesConstRef) and manually with the populate() method. These will
|
|
* conduct verification of the header against the other information in the block.
|
|
*
|
|
* The object may be populated with a template given a parent BlockInfo object with the
|
|
* populateFromParent() method. The genesis block info may be retrieved with genesis() and the
|
|
* corresponding RLP block created with createGenesisBlock().
|
|
*
|
|
* The difficulty and gas-limit derivations may be calculated with the calculateDifficulty()
|
|
* and calculateGasLimit() and the object serialised to RLP with streamRLP. To determine the
|
|
* header hash without the nonce (for mining), the method headerHash(WithoutNonce) is provided.
|
|
*
|
|
* The default constructor creates an empty object, which can be tested against with the boolean
|
|
* conversion operator.
|
|
*/
|
|
struct BlockInfo
|
|
{
|
|
public:
|
|
h256 hash; ///< SHA3 hash of the block header! Not serialised (the only member not contained in a block header).
|
|
h256 parentHash;
|
|
h256 sha3Uncles;
|
|
Address coinbaseAddress;
|
|
h256 stateRoot;
|
|
h256 transactionsRoot;
|
|
h256 receiptsRoot;
|
|
h512 logBloom; // TODO LogBloom - get include
|
|
u256 difficulty;
|
|
u256 number;
|
|
u256 gasLimit;
|
|
u256 gasUsed;
|
|
u256 timestamp;
|
|
bytes extraData;
|
|
h256 nonce;
|
|
|
|
BlockInfo();
|
|
explicit BlockInfo(bytes const& _block): BlockInfo(&_block) {}
|
|
explicit BlockInfo(bytesConstRef _block, bool _checkNonce = true);
|
|
|
|
static h256 headerHash(bytes const& _block) { return headerHash(&_block); }
|
|
static h256 headerHash(bytesConstRef _block);
|
|
|
|
static BlockInfo fromHeader(bytesConstRef _block);
|
|
|
|
explicit operator bool() const { return timestamp != Invalid256; }
|
|
|
|
bool operator==(BlockInfo const& _cmp) const
|
|
{
|
|
return parentHash == _cmp.parentHash &&
|
|
sha3Uncles == _cmp.sha3Uncles &&
|
|
coinbaseAddress == _cmp.coinbaseAddress &&
|
|
stateRoot == _cmp.stateRoot &&
|
|
transactionsRoot == _cmp.transactionsRoot &&
|
|
receiptsRoot == _cmp.receiptsRoot &&
|
|
logBloom == _cmp.logBloom &&
|
|
difficulty == _cmp.difficulty &&
|
|
number == _cmp.number &&
|
|
gasLimit == _cmp.gasLimit &&
|
|
gasUsed == _cmp.gasUsed &&
|
|
timestamp == _cmp.timestamp &&
|
|
extraData == _cmp.extraData &&
|
|
nonce == _cmp.nonce;
|
|
}
|
|
bool operator!=(BlockInfo const& _cmp) const { return !operator==(_cmp); }
|
|
|
|
void populateFromHeader(RLP const& _header, bool _checkNonce = true);
|
|
void populate(bytesConstRef _block, bool _checkNonce = true);
|
|
void populate(bytes const& _block, bool _checkNonce = true) { populate(&_block, _checkNonce); }
|
|
void verifyInternals(bytesConstRef _block) const;
|
|
void verifyParent(BlockInfo const& _parent) const;
|
|
void populateFromParent(BlockInfo const& parent);
|
|
|
|
u256 calculateDifficulty(BlockInfo const& _parent) const;
|
|
u256 calculateGasLimit(BlockInfo const& _parent) const;
|
|
|
|
/// No-nonce sha3 of the header only.
|
|
h256 headerHash(IncludeNonce _n) const;
|
|
void streamRLP(RLPStream& _s, IncludeNonce _n) const;
|
|
};
|
|
|
|
inline std::ostream& operator<<(std::ostream& _out, BlockInfo const& _bi)
|
|
{
|
|
_out << _bi.hash << " " << _bi.parentHash << " " << _bi.sha3Uncles << " " << _bi.coinbaseAddress << " " << _bi.stateRoot << " " << _bi.transactionsRoot << " " <<
|
|
_bi.receiptsRoot << " " << _bi.logBloom << " " << _bi.difficulty << " " << _bi.number << " " << _bi.gasLimit << " " <<
|
|
_bi.gasUsed << " " << _bi.timestamp << " " << _bi.nonce;
|
|
return _out;
|
|
}
|
|
|
|
}
|
|
}
|
|
|