Hush Full Node software. We were censored from Github, this is where all development happens now.
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282 lines
8.0 KiB
282 lines
8.0 KiB
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2013 The Bitcoin Core developers
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// Copyright (c) 2019-2020 The Hush developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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/******************************************************************************
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* Copyright © 2014-2019 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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#ifndef BITCOIN_PRIMITIVES_BLOCK_H
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#define BITCOIN_PRIMITIVES_BLOCK_H
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#include "primitives/transaction.h"
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//#include "primitives/nonce.h"
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#include "serialize.h"
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#include "uint256.h"
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#include "arith_uint256.h"
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/** Nodes collect new transactions into a block, hash them into a hash tree,
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* and scan through nonce values to make the block's hash satisfy proof-of-work
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* requirements. When they solve the proof-of-work, they broadcast the block
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* to everyone and the block is added to the block chain. The first transaction
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* in the block is a special one that creates a new coin owned by the creator
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* of the block.
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*/
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class CBlockHeader
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{
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public:
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// header
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static const size_t HEADER_SIZE=4+32+32+32+4+4+32; // excluding Equihash solution
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static const int32_t CURRENT_VERSION=4;
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static uint256 (CBlockHeader::*hashFunction)() const;
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static void SetHashAlgo();
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int32_t nVersion;
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uint256 hashPrevBlock;
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uint256 hashMerkleRoot;
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uint256 hashFinalSaplingRoot;
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uint32_t nTime;
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uint32_t nBits;
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uint256 nNonce;
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std::vector<unsigned char> nSolution;
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CBlockHeader()
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{
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SetNull();
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(this->nVersion);
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READWRITE(hashPrevBlock);
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READWRITE(hashMerkleRoot);
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READWRITE(hashFinalSaplingRoot);
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READWRITE(nTime);
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READWRITE(nBits);
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READWRITE(nNonce);
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READWRITE(nSolution);
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}
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void SetNull()
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{
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nVersion = CBlockHeader::CURRENT_VERSION;
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hashPrevBlock.SetNull();
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hashMerkleRoot.SetNull();
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hashFinalSaplingRoot.SetNull();
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nTime = 0;
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nBits = 0;
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nNonce = uint256();
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nSolution.clear();
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}
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bool IsNull() const
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{
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return (nBits == 0);
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}
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uint256 GetHash() const
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{
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return (this->*hashFunction)();
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}
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uint256 GetSHA256DHash() const;
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static void SetSHA256DHash();
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int64_t GetBlockTime() const
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{
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return (int64_t)nTime;
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}
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};
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// this class is used to address the type mismatch that existed between nodes, where block headers
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// were being serialized by senders as CBlock and deserialized as CBlockHeader + an assumed extra
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// compact value. although it was working, I made this because it did break, and makes the connection
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// between CBlock and CBlockHeader more brittle.
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// by using this intentionally specified class instead, we remove an instability in the code that could break
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// due to unrelated changes, but stay compatible with the old method.
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class CNetworkBlockHeader : public CBlockHeader
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{
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public:
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std::vector<CTransaction> compatVec;
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CNetworkBlockHeader() : CBlockHeader()
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{
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SetNull();
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}
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CNetworkBlockHeader(const CBlockHeader &header)
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{
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SetNull();
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*((CBlockHeader*)this) = header;
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(*(CBlockHeader*)this);
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READWRITE(compatVec);
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}
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void SetNull()
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{
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CBlockHeader::SetNull();
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compatVec.clear();
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}
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};
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class CBlock : public CBlockHeader
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{
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public:
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// network and disk
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std::vector<CTransaction> vtx;
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// memory only
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mutable std::vector<uint256> vMerkleTree;
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CBlock()
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{
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SetNull();
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}
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CBlock(const CBlockHeader &header)
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{
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SetNull();
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*((CBlockHeader*)this) = header;
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(*(CBlockHeader*)this);
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READWRITE(vtx);
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}
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void SetNull()
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{
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CBlockHeader::SetNull();
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vtx.clear();
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vMerkleTree.clear();
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}
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CBlockHeader GetBlockHeader() const
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{
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CBlockHeader block;
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block.nVersion = nVersion;
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block.hashPrevBlock = hashPrevBlock;
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block.hashMerkleRoot = hashMerkleRoot;
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block.hashFinalSaplingRoot = hashFinalSaplingRoot;
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block.nTime = nTime;
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block.nBits = nBits;
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block.nNonce = nNonce;
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block.nSolution = nSolution;
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return block;
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}
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// Build the in-memory merkle tree for this block and return the merkle root.
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// If non-NULL, *mutated is set to whether mutation was detected in the merkle
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// tree (a duplication of transactions in the block leading to an identical
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// merkle root).
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uint256 BuildMerkleTree(bool* mutated = NULL) const;
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std::vector<uint256> GetMerkleBranch(int nIndex) const;
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static uint256 CheckMerkleBranch(uint256 hash, const std::vector<uint256>& vMerkleBranch, int nIndex);
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std::string ToString() const;
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};
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uint256 BuildMerkleTree(bool* fMutated, const std::vector<uint256> leaves,
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std::vector<uint256> &vMerkleTree);
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std::vector<uint256> GetMerkleBranch(int nIndex, int nLeaves, const std::vector<uint256> &vMerkleTree);
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/**
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* Custom serializer for CBlockHeader that omits the nonce and solution, for use
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* as input to Equihash.
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*/
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class CEquihashInput : private CBlockHeader
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{
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public:
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CEquihashInput(const CBlockHeader &header)
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{
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CBlockHeader::SetNull();
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*((CBlockHeader*)this) = header;
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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READWRITE(this->nVersion);
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READWRITE(hashPrevBlock);
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READWRITE(hashMerkleRoot);
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READWRITE(hashFinalSaplingRoot);
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READWRITE(nTime);
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READWRITE(nBits);
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}
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};
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/** Describes a place in the block chain to another node such that if the
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* other node doesn't have the same branch, it can find a recent common trunk.
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* The further back it is, the further before the fork it may be.
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*/
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struct CBlockLocator
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{
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std::vector<uint256> vHave;
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CBlockLocator() {}
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CBlockLocator(const std::vector<uint256>& vHaveIn)
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{
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vHave = vHaveIn;
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}
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ADD_SERIALIZE_METHODS;
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template <typename Stream, typename Operation>
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inline void SerializationOp(Stream& s, Operation ser_action) {
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int nVersion = s.GetVersion();
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if (!(s.GetType() & SER_GETHASH))
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READWRITE(nVersion);
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READWRITE(vHave);
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}
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void SetNull()
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{
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vHave.clear();
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}
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bool IsNull() const
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{
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return vHave.empty();
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}
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friend bool operator==(const CBlockLocator& a, const CBlockLocator& b) {
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return (a.vHave == b.vHave);
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}
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};
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#endif // BITCOIN_PRIMITIVES_BLOCK_H
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