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txscript: Use removeOpcodeRaw for CODESEP in calcSigHash

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Conner Fromknecht 2019-04-19 16:28:26 -07:00 committed by Olaoluwa Osuntokun
parent 2ddcdb91f5
commit a2ab5b6681
No known key found for this signature in database
GPG key ID: 3BBD59E99B280306
1 changed files with 2 additions and 12 deletions
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14
txscript/script.go
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@ -683,24 +683,14 @@ func calcSignatureHashRaw(sigScript []byte, hashType SigHashType, tx *wire.MsgTx
}
// Remove all instances of OP_CODESEPARATOR from the script.
filteredScript := make([]byte, 0, len(sigScript))
const scriptVersion = 0
tokenizer := MakeScriptTokenizer(scriptVersion, sigScript)
var prevOffset int32
for tokenizer.Next() {
if tokenizer.Opcode() != OP_CODESEPARATOR {
filteredScript = append(filteredScript,
sigScript[prevOffset:tokenizer.ByteIndex()]...)
}
prevOffset = tokenizer.ByteIndex()
}
sigScript = removeOpcodeRaw(sigScript, OP_CODESEPARATOR)
// Make a shallow copy of the transaction, zeroing out the script for
// all inputs that are not currently being processed.
txCopy := shallowCopyTx(tx)
for i := range txCopy.TxIn {
if i == idx {
txCopy.TxIn[idx].SignatureScript = filteredScript
txCopy.TxIn[idx].SignatureScript = sigScript
} else {
txCopy.TxIn[i].SignatureScript = nil
}