mirror of
https://github.com/kaspanet/kaspad.git
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d922ee1be2
* Add DAAScore, BlueWork, and FinalityPoint to externalapi.BlockHeader. * Add DAAScore, BlueWork, and FinalityPoint to NewImmutableBlockHeader and fix compilation errors. * Add DAAScore, BlueWork, and FinalityPoint to protowire header types and fix failing tests. * Check for header DAA score in validateDifficulty. * Add DAA score to buildBlock. * Fix failing tests. * Add a blue work check in validateDifficultyDAAAndBlueWork. * Add blue work to buildBlock and fix failing tests. * Add finality point validation to ValidateHeaderInContext. * Fix genesis blocks' finality points. * Add finalityPoint to blockBuilder. * Fix tests that failed due to missing reachability data. * Make blockBuilder use VirtualFinalityPoint instead of directly calling FinalityPoint with the virtual hash. * Don't validate the finality point for blocks with trusted data. * Add debug logs. * Skip finality point validation for block whose finality points are the virtual genesis. * Revert "Add debug logs." This reverts commit 3c18f519ccbb382f86f63904dbb1c4cd6bc68b00. * Move checkDAAScore and checkBlueWork to validateBlockHeaderInContext. * Add checkCoinbaseBlueScore to validateBodyInContext. * Fix failing tests. * Add DAAScore, blueWork, and finalityPoint to blocks' hashes. * Generate new genesis blocks. * Fix failing tests. * In BuildUTXOInvalidBlock, get the bits from StageDAADataAndReturnRequiredDifficulty instead of calling RequiredDifficulty separately.
117 lines
4.2 KiB
Go
117 lines
4.2 KiB
Go
// Copyright (c) 2013-2016 The btcsuite developers
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// Use of this source code is governed by an ISC
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// license that can be found in the LICENSE file.
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package appmessage
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import (
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"math"
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"math/big"
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"github.com/kaspanet/kaspad/domain/consensus/utils/consensushashing"
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"github.com/kaspanet/kaspad/domain/consensus/model/externalapi"
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"github.com/kaspanet/kaspad/util/mstime"
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"github.com/pkg/errors"
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)
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// BaseBlockHeaderPayload is the base number of bytes a block header can be,
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// not including the list of parent block headers.
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// Version 4 bytes + Timestamp 8 bytes + Bits 4 bytes + Nonce 8 bytes +
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// + NumParentBlocks 1 byte + HashMerkleRoot hash +
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// + AcceptedIDMerkleRoot hash + UTXOCommitment hash.
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// To get total size of block header len(ParentHashes) * externalapi.DomainHashSize should be
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// added to this value
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const BaseBlockHeaderPayload = 25 + 3*(externalapi.DomainHashSize)
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// MaxNumParentBlocks is the maximum number of parent blocks a block can reference.
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// Currently set to 255 as the maximum number NumParentBlocks can be due to it being a byte
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const MaxNumParentBlocks = 255
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// MaxBlockHeaderPayload is the maximum number of bytes a block header can be.
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// BaseBlockHeaderPayload + up to MaxNumParentBlocks hashes of parent blocks
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const MaxBlockHeaderPayload = BaseBlockHeaderPayload + (MaxNumParentBlocks * externalapi.DomainHashSize)
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// MsgBlockHeader defines information about a block and is used in the kaspa
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// block (MsgBlock) and headers (MsgHeader) messages.
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type MsgBlockHeader struct {
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baseMessage
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// Version of the block. This is not the same as the protocol version.
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Version uint16
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// Hashes of the parent block headers in the blockDAG.
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ParentHashes []*externalapi.DomainHash
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// HashMerkleRoot is the merkle tree reference to hash of all transactions for the block.
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HashMerkleRoot *externalapi.DomainHash
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// AcceptedIDMerkleRoot is merkle tree reference to hash all transactions
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// accepted form the block.Blues
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AcceptedIDMerkleRoot *externalapi.DomainHash
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// UTXOCommitment is an ECMH UTXO commitment to the block UTXO.
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UTXOCommitment *externalapi.DomainHash
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// Time the block was created.
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Timestamp mstime.Time
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// Difficulty target for the block.
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Bits uint32
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// Nonce used to generate the block.
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Nonce uint64
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// DAASCore is the DAA score of the block.
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DAAScore uint64
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// BlueWork is the blue work of the block.
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BlueWork *big.Int
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// FinalityPoint is the highest finality point below the block.
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FinalityPoint *externalapi.DomainHash
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}
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// NumParentBlocks return the number of entries in ParentHashes
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func (h *MsgBlockHeader) NumParentBlocks() byte {
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numParents := len(h.ParentHashes)
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if numParents > math.MaxUint8 {
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panic(errors.Errorf("number of parents is %d, which is more than one byte can fit", numParents))
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}
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return byte(numParents)
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}
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// BlockHash computes the block identifier hash for the given block header.
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func (h *MsgBlockHeader) BlockHash() *externalapi.DomainHash {
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return consensushashing.HeaderHash(BlockHeaderToDomainBlockHeader(h))
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}
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// IsGenesis returns true iff this block is a genesis block
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func (h *MsgBlockHeader) IsGenesis() bool {
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return h.NumParentBlocks() == 0
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}
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// NewBlockHeader returns a new MsgBlockHeader using the provided version, previous
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// block hash, hash merkle root, accepted ID merkle root, difficulty bits, and nonce used to generate the
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// block with defaults or calclulated values for the remaining fields.
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func NewBlockHeader(version uint16, parentHashes []*externalapi.DomainHash, hashMerkleRoot *externalapi.DomainHash,
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acceptedIDMerkleRoot *externalapi.DomainHash, utxoCommitment *externalapi.DomainHash, bits uint32, nonce uint64,
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daaScore uint64, blueWork *big.Int, finalityPoint *externalapi.DomainHash) *MsgBlockHeader {
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// Limit the timestamp to one millisecond precision since the protocol
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// doesn't support better.
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return &MsgBlockHeader{
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Version: version,
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ParentHashes: parentHashes,
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HashMerkleRoot: hashMerkleRoot,
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AcceptedIDMerkleRoot: acceptedIDMerkleRoot,
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UTXOCommitment: utxoCommitment,
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Timestamp: mstime.Now(),
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Bits: bits,
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Nonce: nonce,
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DAAScore: daaScore,
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BlueWork: blueWork,
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FinalityPoint: finalityPoint,
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}
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}
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