Revert "core, eth/downloader, params: validate blob tx bodies (ethereum#27392)"

This reverts commit b606e38.

Author: devopsbo3

core/block_validator.go

@@ -84,23 +84,7 @@ func (v *BlockValidator) ValidateBody(block *types.Block) error {
 	// Blob transactions may be present after the Cancun fork.
 	var blobs int
 	for _, tx := range block.Transactions() {
-		// Count the number of blobs to validate against the header's dataGasUsed
 		blobs += len(tx.BlobHashes())
-
-		// Validate the data blobs individually too
-		if tx.Type() == types.BlobTxType {
-			if tx.To() == nil {
-				return errors.New("contract creation attempt by blob transaction") // TODO(karalabe): Why not make the field non-nil-able
-			}
-			if len(tx.BlobHashes()) == 0 {
-				return errors.New("no-blob blob transaction present in block body")
-			}
-			for _, hash := range tx.BlobHashes() {
-				if hash[0] != params.BlobTxHashVersion {
-					return fmt.Errorf("blob hash version mismatch (have %d, supported %d)", hash[0], params.BlobTxHashVersion)
-				}
-			}
-		}
 	}
 	if header.DataGasUsed != nil {
 		if want := *header.DataGasUsed / params.BlobTxDataGasPerBlob; uint64(blobs) != want { // div because the header is surely good vs the body might be bloated

eth/downloader/queue.go

@@ -801,23 +801,7 @@ func (q *queue) DeliverBodies(id string, txLists [][]*types.Transaction, txListH
 		// and zero before the Cancun hardfork
 		var blobs int
 		for _, tx := range txLists[index] {
-			// Count the number of blobs to validate against the header's dataGasUsed
 			blobs += len(tx.BlobHashes())
-
-			// Validate the data blobs individually too
-			if tx.Type() == types.BlobTxType {
-				if tx.To() == nil {
-					return errInvalidBody // TODO(karalabe): Why not make the field non-nil-able
-				}
-				if len(tx.BlobHashes()) == 0 {
-					return errInvalidBody
-				}
-				for _, hash := range tx.BlobHashes() {
-					if hash[0] != params.BlobTxHashVersion {
-						return errInvalidBody
-					}
-				}
-			}
 		}
 		if header.DataGasUsed != nil {
 			if want := *header.DataGasUsed / params.BlobTxDataGasPerBlob; uint64(blobs) != want { // div because the header is surely good vs the body might be bloated

params/protocol_params.go

@@ -160,7 +160,6 @@ const (
 	RefundQuotient        uint64 = 2
 	RefundQuotientEIP3529 uint64 = 5
 
-	BlobTxHashVersion                = 0x01    // Version byte of the commitment hash
 	BlobTxMaxDataGasPerBlock         = 1 << 19 // Maximum consumable data gas for data blobs per block
 	BlobTxTargetDataGasPerBlock      = 1 << 18 // Target consumable data gas for data blobs per block (for 1559-like pricing)
 	BlobTxDataGasPerBlob             = 1 << 17 // Gas consumption of a single data blob (== blob byte size)