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Export the IsCoinbase function.

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This commit is contained in:
Dave Collins 2013-09-30 16:41:51 -05:00
parent 4eb135618a
commit 6695cd15bb
1 changed files with 7 additions and 7 deletions

14
validate.go
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@ -89,12 +89,12 @@ func isNullOutpoint(outpoint *btcwire.OutPoint) bool {
return false return false
} }
// isCoinBase determines whether or not a transaction is a coinbase. A coinbase // IsCoinBase determines whether or not a transaction is a coinbase. A coinbase
// is a special transaction created by miners that has no inputs. This is // is a special transaction created by miners that has no inputs. This is
// represented in the block chain by a transaction with a single input that has // represented in the block chain by a transaction with a single input that has
// a previous output transaction index set to the maximum value along with a // a previous output transaction index set to the maximum value along with a
// zero hash. // zero hash.
func isCoinBase(msgTx *btcwire.MsgTx) bool { func IsCoinBase(msgTx *btcwire.MsgTx) bool {
// A coin base must only have one transaction input. // A coin base must only have one transaction input.
if len(msgTx.TxIn) != 1 { if len(msgTx.TxIn) != 1 {
return false return false
@ -241,7 +241,7 @@ func checkTransactionSanity(tx *btcwire.MsgTx) error {
} }
// Coinbase script length must be between min and max length. // Coinbase script length must be between min and max length.
if isCoinBase(tx) { if IsCoinBase(tx) {
slen := len(tx.TxIn[0].SignatureScript) slen := len(tx.TxIn[0].SignatureScript)
if slen < minCoinbaseScriptLen || slen > maxCoinbaseScriptLen { if slen < minCoinbaseScriptLen || slen > maxCoinbaseScriptLen {
str := fmt.Sprintf("coinbase transaction script length "+ str := fmt.Sprintf("coinbase transaction script length "+
@ -421,13 +421,13 @@ func (b *BlockChain) checkBlockSanity(block *btcutil.Block) error {
} }
// The first transaction in a block must be a coinbase. // The first transaction in a block must be a coinbase.
if !isCoinBase(transactions[0]) { if !IsCoinBase(transactions[0]) {
return RuleError("first transaction in block is not a coinbase") return RuleError("first transaction in block is not a coinbase")
} }
// A block must not have more than one coinbase. // A block must not have more than one coinbase.
for i, tx := range transactions[1:] { for i, tx := range transactions[1:] {
if isCoinBase(tx) { if IsCoinBase(tx) {
str := fmt.Sprintf("block contains second coinbase at "+ str := fmt.Sprintf("block contains second coinbase at "+
"index %d", i) "index %d", i)
return RuleError(str) return RuleError(str)
@ -589,7 +589,7 @@ func (b *BlockChain) checkBIP0030(node *blockNode, block *btcutil.Block) error {
// it also calculates the total fees for the transaction and returns that value. // it also calculates the total fees for the transaction and returns that value.
func checkTransactionInputs(tx *btcwire.MsgTx, txHeight int64, txStore TxStore) (int64, error) { func checkTransactionInputs(tx *btcwire.MsgTx, txHeight int64, txStore TxStore) (int64, error) {
// Coinbase transactions have no inputs. // Coinbase transactions have no inputs.
if isCoinBase(tx) { if IsCoinBase(tx) {
return 0, nil return 0, nil
} }
@ -612,7 +612,7 @@ func checkTransactionInputs(tx *btcwire.MsgTx, txHeight int64, txStore TxStore)
// Ensure the transaction is not spending coins which have not // Ensure the transaction is not spending coins which have not
// yet reached the required coinbase maturity. // yet reached the required coinbase maturity.
if isCoinBase(originTx.Tx) { if IsCoinBase(originTx.Tx) {
originHeight := originTx.BlockHeight originHeight := originTx.BlockHeight
blocksSincePrev := txHeight - originHeight blocksSincePrev := txHeight - originHeight
if blocksSincePrev < coinbaseMaturity { if blocksSincePrev < coinbaseMaturity {