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txbuilder: apply input.value before prepareInput

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This commit is contained in:
Daniel Cousens 2017-09-27 07:22:03 +10:00
parent c729d322c2
commit 41378f9648
1 changed files with 9 additions and 7 deletions
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16
src/transaction_builder.js
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@ -298,6 +298,7 @@ function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScrip
expanded = expandOutput(witnessScript, undefined, kpPubKey)
if (!expanded.pubKeys) throw new Error('WitnessScript not supported "' + bscript.toASM(redeemScript) + '"')
prevOutType = btemplates.types.P2SH
prevOutScript = btemplates.scriptHash.output.encode(redeemScriptHash)
p2sh = witness = p2wsh = true
@ -347,18 +348,13 @@ function prepareInput (input, kpPubKey, redeemScript, witnessValue, witnessScrip
} else {
prevOutScript = btemplates.pubKeyHash.output.encode(bcrypto.hash160(kpPubKey))
expanded = expandOutput(prevOutScript, scriptTypes.P2PKH, kpPubKey)
prevOutType = scriptTypes.P2PKH
witness = false
signType = prevOutType
signScript = prevOutScript
}
if (witnessValue !== undefined || witness) {
typeforce(types.Satoshi, witnessValue)
if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue')
input.value = witnessValue
}
if (signType === scriptTypes.P2WPKH) {
signScript = btemplates.pubKeyHash.output.encode(btemplates.witnessPubKeyHash.output.decode(signScript))
}
@ -686,7 +682,13 @@ TransactionBuilder.prototype.sign = function (vin, keyPair, redeemScript, hashTy
var kpPubKey = keyPair.getPublicKeyBuffer()
if (!canSign(input)) {
prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript)
if (witnessValue !== undefined) {
if (input.value !== undefined && input.value !== witnessValue) throw new Error('Input didn\'t match witnessValue')
typeforce(types.Satoshi, witnessValue)
input.value = witnessValue
}
if (!canSign(input)) prepareInput(input, kpPubKey, redeemScript, witnessValue, witnessScript)
if (!canSign(input)) throw Error(input.prevOutType + ' not supported')
}