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TransactionBuilder: localize fixMultisigOrder assumptions

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Daniel Cousens 2016-10-12 12:04:45 +11:00 committed by Daniel Cousens
parent 0e2480523a
commit a58c959099
1 changed files with 9 additions and 14 deletions
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23
src/transaction_builder.js
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@ -218,14 +218,16 @@ function prepareInput (input, kpPubKey, redeemScript, hashType) {
function fixMultisigOrder (input, transaction, vin) {
var hashScriptType = input.redeemScriptType || input.prevOutType
if (hashScriptType !== 'multisig') throw new TypeError('Expected multisig input')
if (hashScriptType !== 'multisig') return
var hashType = input.hashType || Transaction.SIGHASH_ALL
var hashScript = input.redeemScript || input.prevOutScript
if (!hashScript) return
if (!input.pubKeys) return
if (input.pubKeys.length === input.signatures.length) return
// maintain a local copy of unmatched signatures
var unmatched = input.signatures.concat()
var signatureHash = transaction.hashForSignature(vin, hashScript, hashType)
var hashType = input.hashType || Transaction.SIGHASH_ALL
var hash = transaction.hashForSignature(vin, hashScript, hashType)
input.signatures = input.pubKeys.map(function (pubKey, y) {
var keyPair = ECPair.fromPublicKeyBuffer(pubKey)
@ -237,7 +239,7 @@ function fixMultisigOrder (input, transaction, vin) {
if (!signature) return false
// skip if signature does not match pubKey
if (!keyPair.verify(signatureHash, signature)) return false
if (!keyPair.verify(hash, signature)) return false
// remove matched signature from unmatched
unmatched[i] = undefined
@ -246,7 +248,7 @@ function fixMultisigOrder (input, transaction, vin) {
return true
})
return match || undefined
return match
})
}
@ -299,14 +301,7 @@ TransactionBuilder.fromTransaction = function (transaction, network) {
// fix some things not possible through the public API
txb.inputs.forEach(function (input, i) {
// attempt to fix any multisig inputs if they exist
if ((input.redeemScriptType || input.prevOutType) === 'multisig') {
// pubKeys will only exist for 'multisig' if a redeemScript was found
if (!input.pubKeys || !input.signatures) return
if (input.pubKeys.length === input.signatures.length) return
fixMultisigOrder(input, transaction, i)
}
fixMultisigOrder(input, transaction, i)
})
return txb