forked from kaspanet/kaspad
/
block_body_in_isolation.go
248 lines (211 loc) · 7.49 KB
/
block_body_in_isolation.go
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package blockvalidator
import (
"github.com/Hoosat-Oy/HTND/domain/consensus/model"
"github.com/Hoosat-Oy/HTND/domain/consensus/model/externalapi"
"github.com/Hoosat-Oy/HTND/domain/consensus/ruleerrors"
"github.com/Hoosat-Oy/HTND/domain/consensus/utils/consensushashing"
"github.com/Hoosat-Oy/HTND/domain/consensus/utils/merkle"
"github.com/Hoosat-Oy/HTND/domain/consensus/utils/subnetworks"
"github.com/Hoosat-Oy/HTND/domain/consensus/utils/transactionhelper"
"github.com/Hoosat-Oy/HTND/infrastructure/logger"
"github.com/pkg/errors"
)
// ValidateBodyInIsolation validates block bodies in isolation from the current
// consensus state
func (v *blockValidator) ValidateBodyInIsolation(stagingArea *model.StagingArea, blockHash *externalapi.DomainHash) error {
onEnd := logger.LogAndMeasureExecutionTime(log, "ValidateBodyInContext")
defer onEnd()
block, err := v.blockStore.Block(v.databaseContext, stagingArea, blockHash)
if err != nil {
return err
}
err = v.checkNoPrefilledInputs(block)
if err != nil {
return err
}
err = v.checkBlockHashMerkleRoot(block)
if err != nil {
return err
}
err = v.checkBlockContainsAtLeastOneTransaction(block)
if err != nil {
return err
}
err = v.checkFirstBlockTransactionIsCoinbase(block)
if err != nil {
return err
}
err = v.checkBlockContainsOnlyOneCoinbase(block)
if err != nil {
return err
}
err = v.checkCoinbaseBlueScore(block)
if err != nil {
return err
}
err = v.checkBlockTransactionOrder(block)
if err != nil {
return err
}
err = v.checkTransactionsInIsolation(block)
if err != nil {
return err
}
err = v.checkBlockMass(block)
if err != nil {
return err
}
err = v.checkBlockDuplicateTransactions(block)
if err != nil {
return err
}
err = v.checkBlockDoubleSpends(block)
if err != nil {
return err
}
err = v.checkBlockHasNoChainedTransactions(block)
if err != nil {
return err
}
err = v.validateGasLimit(block)
if err != nil {
return err
}
return nil
}
func (v *blockValidator) checkCoinbaseBlueScore(block *externalapi.DomainBlock) error {
coinbaseBlueScore, _, _, err := v.coinbaseManager.ExtractCoinbaseDataBlueScoreAndSubsidy(block.Transactions[transactionhelper.CoinbaseTransactionIndex])
if err != nil {
return err
}
if coinbaseBlueScore != block.Header.BlueScore() {
return errors.Wrapf(ruleerrors.ErrUnexpectedCoinbaseBlueScore, "block blue score of %d is not the expected "+
"value of %d", coinbaseBlueScore, block.Header.BlueScore())
}
return nil
}
func (v *blockValidator) checkBlockContainsAtLeastOneTransaction(block *externalapi.DomainBlock) error {
if len(block.Transactions) == 0 {
return errors.Wrapf(ruleerrors.ErrNoTransactions, "block does not contain "+
"any transactions")
}
return nil
}
func (v *blockValidator) checkFirstBlockTransactionIsCoinbase(block *externalapi.DomainBlock) error {
if !transactionhelper.IsCoinBase(block.Transactions[transactionhelper.CoinbaseTransactionIndex]) {
return errors.Wrapf(ruleerrors.ErrFirstTxNotCoinbase, "first transaction in "+
"block is not a coinbase")
}
return nil
}
func (v *blockValidator) checkBlockContainsOnlyOneCoinbase(block *externalapi.DomainBlock) error {
for i, tx := range block.Transactions[transactionhelper.CoinbaseTransactionIndex+1:] {
if transactionhelper.IsCoinBase(tx) {
return errors.Wrapf(ruleerrors.ErrMultipleCoinbases, "block contains second coinbase at "+
"index %d", i+transactionhelper.CoinbaseTransactionIndex+1)
}
}
return nil
}
func (v *blockValidator) checkBlockTransactionOrder(block *externalapi.DomainBlock) error {
for i, tx := range block.Transactions[transactionhelper.CoinbaseTransactionIndex+1:] {
if i != 0 && subnetworks.Less(tx.SubnetworkID, block.Transactions[i].SubnetworkID) {
return errors.Wrapf(ruleerrors.ErrTransactionsNotSorted, "transactions must be sorted by subnetwork")
}
}
return nil
}
func (v *blockValidator) checkTransactionsInIsolation(block *externalapi.DomainBlock) error {
for _, tx := range block.Transactions {
err := v.transactionValidator.ValidateTransactionInIsolation(tx, block.Header.DAAScore())
if err != nil {
return errors.Wrapf(err, "transaction %s failed isolation "+
"check", consensushashing.TransactionID(tx))
}
}
return nil
}
func (v *blockValidator) checkBlockHashMerkleRoot(block *externalapi.DomainBlock) error {
calculatedHashMerkleRoot := merkle.CalculateHashMerkleRoot(block.Transactions)
if !block.Header.HashMerkleRoot().Equal(calculatedHashMerkleRoot) {
return errors.Wrapf(ruleerrors.ErrBadMerkleRoot, "block hash merkle root is invalid - block "+
"header indicates %s, but calculated value is %s",
block.Header.HashMerkleRoot(), calculatedHashMerkleRoot)
}
return nil
}
func (v *blockValidator) checkBlockDuplicateTransactions(block *externalapi.DomainBlock) error {
existingTxIDs := make(map[externalapi.DomainTransactionID]struct{})
for _, tx := range block.Transactions {
id := consensushashing.TransactionID(tx)
if _, exists := existingTxIDs[*id]; exists {
return errors.Wrapf(ruleerrors.ErrDuplicateTx, "block contains duplicate "+
"transaction %s", id)
}
existingTxIDs[*id] = struct{}{}
}
return nil
}
func (v *blockValidator) checkBlockDoubleSpends(block *externalapi.DomainBlock) error {
usedOutpoints := make(map[externalapi.DomainOutpoint]*externalapi.DomainTransactionID)
for _, tx := range block.Transactions {
for _, input := range tx.Inputs {
txID := consensushashing.TransactionID(tx)
if spendingTxID, exists := usedOutpoints[input.PreviousOutpoint]; exists {
return errors.Wrapf(ruleerrors.ErrDoubleSpendInSameBlock, "transaction %s spends "+
"outpoint %s that was already spent by "+
"transaction %s in this block", txID,
input.PreviousOutpoint, spendingTxID)
}
usedOutpoints[input.PreviousOutpoint] = txID
}
}
return nil
}
func (v *blockValidator) checkBlockHasNoChainedTransactions(block *externalapi.DomainBlock) error {
transactions := block.Transactions
transactionsSet := make(map[externalapi.DomainTransactionID]struct{}, len(transactions))
for _, transaction := range transactions {
txID := consensushashing.TransactionID(transaction)
transactionsSet[*txID] = struct{}{}
}
for _, transaction := range transactions {
for i, transactionInput := range transaction.Inputs {
if _, ok := transactionsSet[transactionInput.PreviousOutpoint.TransactionID]; ok {
txID := consensushashing.TransactionID(transaction)
return errors.Wrapf(ruleerrors.ErrChainedTransactions, "block contains chained "+
"transactions: Input %d of transaction %s spend "+
"an output of transaction %s", i, txID, transactionInput.PreviousOutpoint.TransactionID)
}
}
}
return nil
}
func (v *blockValidator) validateGasLimit(block *externalapi.DomainBlock) error {
// TODO: implement this
return nil
}
func (v *blockValidator) checkBlockMass(block *externalapi.DomainBlock) error {
mass := uint64(0)
for _, transaction := range block.Transactions {
v.transactionValidator.PopulateMass(transaction)
massBefore := mass
mass += transaction.Mass
if mass > v.maxBlockMass || mass < massBefore {
return errors.Wrapf(ruleerrors.ErrBlockMassTooHigh, "block exceeded the mass limit of %d",
v.maxBlockMass)
}
}
return nil
}
func (v *blockValidator) checkNoPrefilledInputs(block *externalapi.DomainBlock) error {
for _, tx := range block.Transactions {
for i, input := range tx.Inputs {
if input.UTXOEntry != nil {
return errors.Errorf("input %d in transaction %s has a prefilled UTXO entry",
i, consensushashing.TransactionID(tx))
}
}
}
return nil
}