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Should allow restoring all state if given scriptPubKey / redeemScript / witnessScript

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This commit is contained in:
Thomas Kerin 2016-11-12 19:26:21 +01:00
parent 244c3d4f18
commit b0bda2e3f2
1 changed files with 12 additions and 13 deletions
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25
src/transaction_signer.js
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@ -37,13 +37,14 @@ function sortMultisigs (tx, nIn, txOutValue, ecsigs, publicKeys, scriptCode, sig
var success = true
var sigsCount = ecsigs.length
var keysCount = publicKeys.length
while (success && ecsigs.length > 0) {
while (success && ecsigs.length > isig) {
sig = ECSignature.parseScriptSignature(ecsigs[isig])
key = ECPair.fromPublicKeyBuffer(publicKeys[ikey])
hash = calculateSigHash(tx, nIn, scriptCode, sig.hashType, sigVersion, txOutValue)
if (key.verify(hash, sig.signature)) {
isig++
results[key.getPublicKeyBuffer().toString('binary')] = ecsigs[isig]
results[key.getPublicKeyBuffer().toString('binary')] = sig
}
ikey++
if (sigsCount > keysCount) {
@ -233,14 +234,14 @@ InSigner.prototype.extractSignableChunks = function (solution, chunks, sigVersio
publicKeys[0] = decoded.pubKey
}
} else if (solution.type === bscript.types.MULTISIG) {
if (bscript.multisig.input.check(chunks)) {
publicKeys = solution.solvedBy.publicKeys
signatures = bscript.multisig.input.decode(chunks, true)
if (bscript.multisig.input.check(pushAll(chunks))) {
publicKeys = solution.solvedBy.pubKeys
signatures = bscript.multisig.input.decode(pushAll(chunks), true)
// We need to map signature to the pubkey index in order to re-serialize
var sigs = sortMultisigs(this.tx, this.nIn, this.txOut.value, signatures, publicKeys, solution.script, sigVersion)
var sigs = sortMultisigs(this.tx, this.nIn, this.value, signatures, publicKeys, solution.script, sigVersion)
for (var i = 0, l = publicKeys.length; i < l; i++) {
var str = publicKeys[ i ].getPublicKeyBuffer().toString('binary')
var str = publicKeys[ i ].toString('binary')
if (sigs[ str ] !== undefined && bscript.isCanonicalSignature(sigs[str])) {
signatures[ i ] = sigs[ str ]
}
@ -263,7 +264,8 @@ InSigner.prototype.extractSig = function () {
}
if (solution.type === bscript.types.P2SH) {
if (bscript.scriptHash.input.check(input.script)) {
extractChunks = bscript.decompile(input.script)
if (extractChunks.length > 0) {
// If we go to extract a P2SH scriptSig, verify the provided redeemScript
var p2sh = bscript.scriptHash.input.decode(input.script)
if (!p2sh.redeemScript.equals(this.redeemScript.script)) {
@ -283,21 +285,18 @@ InSigner.prototype.extractSig = function () {
if (!witnessKeyHash.equals(bcrypto.hash160(input.witness[1]))) {
throw new Error('Public key does not match key-hash')
}
extractChunks = input.witness
}
} else if (solution.type === bscript.types.P2WSH) {
if (input.witness.length > 0) {
if (!this.witnessScript.equals(input.witness[ input.witness.length - 1 ])) {
if (!this.witnessScript.script.equals(input.witness[ input.witness.length - 1 ])) {
throw new Error('Witness script does not match')
}
solution = input.witnessScript
extractChunks = input.witness.slice(0, -1)
}
}
if (extractChunks.length > 0) {
[this.signatures, this.publicKeys] = this.extractSignableChunks(solution, extractChunks, this.sigVersion)
[this.signatures, this.publicKeys] = this.extractSignableChunks(this.signScript, extractChunks, this.sigVersion)
}
}