LBRYCommunity/lbcd
1
0
Fork 0
Code Issues 17 Pull requests 4 Projects Releases 28 Packages Wiki Activity

txscript: Use removeOpcodeRaw for CODESEP in calcSigHash

Browse source
This commit is contained in:
Conner Fromknecht 2019-04-19 16:28:26 -07:00 committed by Roy Lee
parent 1e3b85cd60
commit 25206b9565
1 changed files with 2 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

14
txscript/script.go
View file

@ -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
}