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Merge pull request #244 from dcousens/txbuilder

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Transaction Builder
This commit is contained in:
Wei Lu 2014-08-18 18:08:34 +08:00
commit 106e00e6f1
10 changed files with 730 additions and 49 deletions
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1
src/index.js
View file

@ -13,6 +13,7 @@ module.exports = {
Script: require('./script'),
scripts: require('./scripts'),
Transaction: require('./transaction'),
TransactionBuilder: require('./transaction_builder'),
networks: require('./networks'),
Wallet: require('./wallet')
}

38
src/transaction.js
View file

@ -162,7 +162,17 @@ Transaction.prototype.toHex = function() {
* hashType, serializes and finally hashes the result. This hash can then be
* used to sign the transaction input in question.
*/
Transaction.prototype.hashForSignature = function(prevOutScript, inIndex, hashType) {
Transaction.prototype.hashForSignature = function(inIndex, prevOutScript, hashType) {
// FIXME: remove in 2.x.y
if (arguments[0] instanceof Script) {
console.warn('hashForSignature(prevOutScript, inIndex, ...) has been deprecated. Use hashForSignature(inIndex, prevOutScript, ...)')
// swap the arguments (must be stored in tmp, arguments is special)
var tmp = arguments[0]
inIndex = arguments[1]
prevOutScript = tmp
}
assert(inIndex >= 0, 'Invalid vin index')
assert(inIndex < this.ins.length, 'Invalid vin index')
assert(prevOutScript instanceof Script, 'Invalid Script object')
@ -296,35 +306,39 @@ Transaction.fromHex = function(hex) {
return Transaction.fromBuffer(new Buffer(hex, 'hex'))
}
/**
* Signs a pubKeyHash output at some index with the given key
*/
Transaction.prototype.setInputScript = function(index, script) {
this.ins[index].script = script
}
// FIXME: remove in 2.x.y
Transaction.prototype.sign = function(index, privKey, hashType) {
console.warn("Transaction.prototype.sign is deprecated. Use TransactionBuilder instead.")
var prevOutScript = privKey.pub.getAddress().toOutputScript()
var signature = this.signInput(index, prevOutScript, privKey, hashType)
// FIXME: Assumed prior TX was pay-to-pubkey-hash
var scriptSig = scripts.pubKeyHashInput(signature, privKey.pub)
this.setInputScript(index, scriptSig)
}
// FIXME: remove in 2.x.y
Transaction.prototype.signInput = function(index, prevOutScript, privKey, hashType) {
console.warn("Transaction.prototype.signInput is deprecated. Use TransactionBuilder instead.")
hashType = hashType || Transaction.SIGHASH_ALL
var hash = this.hashForSignature(prevOutScript, index, hashType)
var hash = this.hashForSignature(index, prevOutScript, hashType)
var signature = privKey.sign(hash)
return signature.toScriptSignature(hashType)
}
Transaction.prototype.setInputScript = function(index, script) {
this.ins[index].script = script
}
// FIXME: could be validateInput(index, prevTxOut, pub)
// FIXME: remove in 2.x.y
Transaction.prototype.validateInput = function(index, prevOutScript, pubKey, buffer) {
console.warn("Transaction.prototype.validateInput is deprecated. Use TransactionBuilder instead.")
var parsed = ECSignature.parseScriptSignature(buffer)
var hash = this.hashForSignature(prevOutScript, index, parsed.hashType)
var hash = this.hashForSignature(index, prevOutScript, parsed.hashType)
return pubKey.verify(hash, parsed.signature)
}

260
src/transaction_builder.js Normal file
View file

@ -0,0 +1,260 @@
var assert = require('assert')
var scripts = require('./scripts')
var ECPubKey = require('./ecpubkey')
var ECSignature = require('./ecsignature')
var Script = require('./script')
var Transaction = require('./transaction')
function TransactionBuilder() {
this.prevOutMap = {}
this.prevOutScripts = {}
this.prevOutTypes = {}
this.signatures = []
this.tx = new Transaction()
}
// Static constructors
TransactionBuilder.fromTransaction = function(transaction) {
var txb = new TransactionBuilder()
// Extract/add inputs
transaction.ins.forEach(function(txin) {
txb.addInput(txin.hash, txin.index, txin.sequence)
})
// Extract/add outputs
transaction.outs.forEach(function(txout) {
txb.addOutput(txout.script, txout.value)
})
// Extract/add signatures
transaction.ins.forEach(function(txin) {
// Ignore empty scripts
if (txin.script.buffer.length === 0) return
var redeemScript
var scriptSig = txin.script
var scriptType = scripts.classifyInput(scriptSig)
// Re-classify if P2SH
if (scriptType === 'scripthash') {
redeemScript = Script.fromBuffer(scriptSig.chunks.slice(-1)[0])
scriptSig = Script.fromChunks(scriptSig.chunks.slice(0, -1))
scriptType = scripts.classifyInput(scriptSig)
assert.equal(scripts.classifyOutput(redeemScript), scriptType, 'Non-matching scriptSig and scriptPubKey in input')
}
// Extract hashType, pubKeys and signatures
var hashType, pubKeys, signatures
switch (scriptType) {
case 'pubkeyhash':
var parsed = ECSignature.parseScriptSignature(scriptSig.chunks[0])
var pubKey = ECPubKey.fromBuffer(scriptSig.chunks[1])
hashType = parsed.hashType
pubKeys = [pubKey]
signatures = [parsed.signature]
break
case 'multisig':
var scriptSigs = scriptSig.chunks.slice(1) // ignore OP_0
var parsed = scriptSigs.map(function(scriptSig) {
return ECSignature.parseScriptSignature(scriptSig)
})
hashType = parsed[0].hashType
pubKeys = []
signatures = parsed.map(function(p) { return p.signature })
break
case 'pubkey':
var parsed = ECSignature.parseScriptSignature(scriptSig.chunks[0])
hashType = parsed.hashType
pubKeys = []
signatures = [parsed.signature]
break
default:
assert(false, scriptType + ' not supported')
}
txb.signatures[txin.index] = {
hashType: hashType,
pubKeys: pubKeys,
redeemScript: redeemScript,
scriptType: scriptType,
signatures: signatures
}
})
return txb
}
// Operations
TransactionBuilder.prototype.addInput = function(prevTx, index, sequence, prevOutScript) {
var prevOutHash
if (typeof prevTx === 'string') {
prevOutHash = new Buffer(prevTx, 'hex')
// TxId hex is big-endian, we want little-endian hash
Array.prototype.reverse.call(prevOutHash)
} else if (prevTx instanceof Transaction) {
prevOutHash = prevTx.getHash()
prevOutScript = prevTx.outs[index].script
} else {
prevOutHash = prevTx
}
var prevOutType
if (prevOutScript !== undefined) {
prevOutType = scripts.classifyOutput(prevOutScript)
assert.notEqual(prevOutType, 'nonstandard', 'PrevOutScript not supported (nonstandard)')
}
assert(this.signatures.every(function(input) {
return input.hashType & Transaction.SIGHASH_ANYONECANPAY
}), 'No, this would invalidate signatures')
var prevOut = prevOutHash.toString('hex') + ':' + index
assert(!(prevOut in this.prevOutMap), 'Transaction is already an input')
var vout = this.tx.addInput(prevOutHash, index, sequence)
this.prevOutMap[prevOut] = true
this.prevOutScripts[vout] = prevOutScript
this.prevOutTypes[vout] = prevOutType
return vout
}
TransactionBuilder.prototype.addOutput = function(scriptPubKey, value) {
assert(this.signatures.every(function(signature) {
return (signature.hashType & 0x1f) === Transaction.SIGHASH_SINGLE
}), 'No, this would invalidate signatures')
return this.tx.addOutput(scriptPubKey, value)
}
TransactionBuilder.prototype.build = function() {
return this.__build(false)
}
TransactionBuilder.prototype.buildIncomplete = function() {
return this.__build(true)
}
TransactionBuilder.prototype.__build = function(allowIncomplete) {
if (!allowIncomplete) {
assert(this.tx.ins.length > 0, 'Transaction has no inputs')
assert(this.tx.outs.length > 0, 'Transaction has no outputs')
assert(this.signatures.length > 0, 'Transaction has no signatures')
assert.equal(this.signatures.length, this.tx.ins.length, 'Transaction is missing signatures')
}
var tx = this.tx.clone()
// Create script signatures from signature meta-data
this.signatures.forEach(function(input, index) {
var scriptSig
var scriptType = input.scriptType
var signatures = input.signatures.map(function(signature) {
return signature.toScriptSignature(input.hashType)
})
switch (scriptType) {
case 'pubkeyhash':
var signature = signatures[0]
var pubKey = input.pubKeys[0]
scriptSig = scripts.pubKeyHashInput(signature, pubKey)
break
case 'multisig':
var redeemScript = allowIncomplete ? undefined : input.redeemScript
scriptSig = scripts.multisigInput(signatures, redeemScript)
break
case 'pubkey':
var signature = signatures[0]
scriptSig = scripts.pubKeyInput(signature)
break
default:
assert(false, scriptType + ' not supported')
}
if (input.redeemScript) {
scriptSig = scripts.scriptHashInput(scriptSig, input.redeemScript)
}
tx.setInputScript(index, scriptSig)
})
return tx
}
TransactionBuilder.prototype.sign = function(index, privKey, redeemScript, hashType) {
assert(this.tx.ins.length >= index, 'No input at index: ' + index)
hashType = hashType || Transaction.SIGHASH_ALL
var prevOutScript = this.prevOutScripts[index]
var prevOutType = this.prevOutTypes[index]
var scriptType, hash
if (redeemScript) {
prevOutScript = prevOutScript || scripts.scriptHashOutput(redeemScript.getHash())
prevOutType = prevOutType || 'scripthash'
assert.equal(prevOutType, 'scripthash', 'PrevOutScript must be P2SH')
scriptType = scripts.classifyOutput(redeemScript)
assert.notEqual(scriptType, 'scripthash', 'RedeemScript can\'t be P2SH')
assert.notEqual(scriptType, 'nonstandard', 'RedeemScript not supported (nonstandard)')
hash = this.tx.hashForSignature(index, redeemScript, hashType)
} else {
prevOutScript = prevOutScript || privKey.pub.getAddress().toOutputScript()
scriptType = prevOutType || 'pubkeyhash'
assert.notEqual(scriptType, 'scripthash', 'PrevOutScript requires redeemScript')
hash = this.tx.hashForSignature(index, prevOutScript, hashType)
}
if (!(index in this.signatures)) {
this.signatures[index] = {
hashType: hashType,
pubKeys: [],
redeemScript: redeemScript,
scriptType: scriptType,
signatures: []
}
}
var input = this.signatures[index]
assert.equal(input.hashType, hashType, 'Inconsistent hashType')
assert.deepEqual(input.redeemScript, redeemScript, 'Inconsistent redeemScript')
var signature = privKey.sign(hash)
input.pubKeys.push(privKey.pub)
input.signatures.push(signature)
}
module.exports = TransactionBuilder

25
src/wallet.js
View file

@ -4,7 +4,7 @@ var networks = require('./networks')
var Address = require('./address')
var HDNode = require('./hdnode')
var Transaction = require('./transaction')
var TransactionBuilder = require('./transaction_builder')
var Script = require('./script')
function Wallet(seed, network, unspents) {
@ -57,17 +57,17 @@ Wallet.prototype.createTx = function(to, value, fixedFee, changeAddress) {
var subTotal = value
var addresses = []
var tx = new Transaction()
tx.addOutput(to, value)
var txb = new TransactionBuilder()
txb.addOutput(to, value)
for (var i = 0; i < utxos.length; ++i) {
var utxo = utxos[i]
addresses.push(utxo.address)
var outpoint = utxo.from.split(':')
tx.addInput(outpoint[0], parseInt(outpoint[1]))
txb.addInput(outpoint[0], parseInt(outpoint[1]))
var fee = fixedFee === undefined ? estimatePaddedFee(tx, this.network) : fixedFee
var fee = fixedFee === undefined ? estimatePaddedFee(txb.buildIncomplete(), this.network) : fixedFee
accum += utxo.value
subTotal = value + fee
@ -75,7 +75,7 @@ Wallet.prototype.createTx = function(to, value, fixedFee, changeAddress) {
var change = accum - subTotal
if (change > this.network.dustThreshold) {
tx.addOutput(changeAddress || this.getChangeAddress(), change)
txb.addOutput(changeAddress || this.getChangeAddress(), change)
}
break
@ -84,8 +84,7 @@ Wallet.prototype.createTx = function(to, value, fixedFee, changeAddress) {
assert(accum >= subTotal, 'Not enough funds (incl. fee): ' + accum + ' < ' + subTotal)
this.signWith(tx, addresses)
return tx
return this.signWith(txb, addresses).build()
}
Wallet.prototype.processPendingTx = function(tx){
@ -219,16 +218,14 @@ Wallet.prototype.setUnspentOutputs = function(utxo) {
this.outputs = processUnspentOutputs(utxo)
}
Wallet.prototype.signWith = function(tx, addresses) {
assert.equal(tx.ins.length, addresses.length, 'Number of addresses must match number of transaction inputs')
Wallet.prototype.signWith = function(txb, addresses) {
addresses.forEach(function(address, i) {
var key = this.getPrivateKeyForAddress(address)
var privKey = this.getPrivateKeyForAddress(address)
tx.sign(i, key)
txb.sign(i, privKey)
}, this)
return tx
return txb
}
function outputToUnspentOutput(output){

2
test/bitcoin.core.js
View file

@ -183,7 +183,7 @@ describe('Bitcoin-core', function() {
var actualHash
try {
actualHash = transaction.hashForSignature(script, inIndex, hashType)
actualHash = transaction.hashForSignature(inIndex, script, hashType)
} catch (e) {
// don't fail if we don't support it yet, TODO
if (!e.message.match(/not yet supported/)) throw e

152
test/fixtures/transaction_builder.json vendored Normal file
View file

@ -0,0 +1,152 @@
{
"valid": {
"build": [
{
"description": "pubKeyHash->pubKeyHash 1:1 transaction",
"txid": "bd641f4b0aa8bd70189ab45e935c4762f0e1c49f294b4779d79887937b7cf42e",
"txhex": "0100000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff000000006b483045022100a3b254e1c10b5d039f36c05f323995d6e5a367d98dd78a13d5bbc3991b35720e022022fccea3897d594de0689601fbd486588d5bfa6915be2386db0397ee9a6e80b601210279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798ffffffff0110270000000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac00000000",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"privKeys": [
"KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"
]
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 10000
}
]
},
{
"description": "pubKey->pubKeyHash 1:1 transaction",
"txid": "a900dea133a3c51e9fe55d82bf4a4f50a4c3ac6e380c841f93651a076573320c",
"txhex": "0100000001ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00000000494830450221009833abb3ab49d7004c06bcc79eafd6905ada3eee91f3376ad388548034acd9a702202e84dda6ef2678c82256afcfc459aaa68e179b2bb0e6b2dc3f1410e132c5e6c301ffffffff0100f90295000000001976a914aa4d7985c57e011a8b3dd8e0e5a73aaef41629c588ac00000000",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"prevTxScript": "0279be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798 OP_CHECKSIG",
"privKeys": [
"KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"
]
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 2500000000
}
]
},
{
"description": "2-of-2 P2SH multisig -> pubKeyHash 1:1 Transaction",
"txid": "8c500ce6eef6c78a10de923b68394cf31120151bdc4600e4b12de865defa9d24",
"txhex": "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",
"inputs": [
{
"index": 0,
"prevTx": "4971f016798a167331bcbc67248313fbc444c6e92e4416efd06964425588f5cf",
"privKeys": [
"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx",
"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgww7vXtT"
],
"redeemScript": "OP_2 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 04c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee51ae168fea63dc339a3c58419466ceaeef7f632653266d0e1236431a950cfe52a OP_2 OP_CHECKMULTISIG"
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 faf1d99bf040ea9c7f8cc9f14ac6733ad75ce246 OP_EQUALVERIFY OP_CHECKSIG",
"value": 10000
}
]
}
]
},
"invalid": {
"build": [
{
"exception": "Transaction has no inputs",
"inputs": [],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 1000
}
]
},
{
"exception": "Transaction has no outputs",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"privKeys": []
}
],
"outputs": []
},
{
"exception": "Transaction has no signatures",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"privKeys": []
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 1000
}
]
},
{
"exception": "Transaction is missing signatures",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"privKeys": [
"KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"
]
},
{
"index": 1,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"privKeys": []
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 1000
}
]
},
{
"exception": "nulldata not supported",
"inputs": [
{
"index": 0,
"prevTx": "ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff",
"prevTxScript": "OP_RETURN 06deadbeef03f895a2ad89fb6d696497af486cb7c644a27aa568c7a18dd06113401115185474",
"privKeys": [
"KwDiBf89QgGbjEhKnhXJuH7LrciVrZi3qYjgd9M7rFU73sVHnoWn"
]
}
],
"outputs": [
{
"script": "OP_DUP OP_HASH160 aa4d7985c57e011a8b3dd8e0e5a73aaef41629c5 OP_EQUALVERIFY OP_CHECKSIG",
"value": 1000
}
]
}
]
}
}

28
test/integration/p2sh.js
View file

@ -1,14 +1,12 @@
var assert = require('assert')
var bitcoin = require('../../')
var crypto = bitcoin.crypto
var networks = bitcoin.networks
var scripts = bitcoin.scripts
var Address = bitcoin.Address
var ECKey = bitcoin.ECKey
var Transaction = bitcoin.Transaction
var Script = bitcoin.Script
var TransactionBuilder = bitcoin.TransactionBuilder
var helloblock = require('helloblock-js')({
network: 'testnet'
@ -43,35 +41,31 @@ describe('Bitcoin-js', function() {
var targetAddress = ECKey.makeRandom().pub.getAddress(networks.testnet).toString()
// get latest unspents from the multisigAddress
helloblock.addresses.getUnspents(multisigAddress, function(err, resp, resource) {
helloblock.addresses.getUnspents(multisigAddress, function(err, res, unspents) {
if (err) return done(err)
// use the oldest unspent
var unspent = resource[resource.length - 1]
var unspent = unspents[unspents.length - 1]
var spendAmount = Math.min(unspent.value, outputAmount)
var tx = new Transaction()
tx.addInput(unspent.txHash, unspent.index)
tx.addOutput(targetAddress, spendAmount)
var txb = new TransactionBuilder()
txb.addInput(unspent.txHash, unspent.index)
txb.addOutput(targetAddress, spendAmount)
var signatures = privKeys.map(function(privKey) {
return tx.signInput(0, redeemScript, privKey)
privKeys.forEach(function(privKey) {
txb.sign(0, privKey, redeemScript)
})
var redeemScriptSig = scripts.multisigInput(signatures)
var scriptSig = scripts.scriptHashInput(redeemScriptSig, redeemScript)
tx.setInputScript(0, scriptSig)
// broadcast our transaction
helloblock.transactions.propagate(tx.toHex(), function(err, resp, resource) {
helloblock.transactions.propagate(txb.build().toHex(), function(err, res) {
// no err means that the transaction has been successfully propagated
if (err) return done(err)
// Check that the funds (spendAmount Satoshis) indeed arrived at the intended address
helloblock.addresses.get(targetAddress, function(err, resp, resource) {
helloblock.addresses.get(targetAddress, function(err, res, addrInfo) {
if (err) return done(err)
assert.equal(resource.balance, spendAmount)
assert.equal(addrInfo.balance, spendAmount)
done()
})
})

2
test/transaction.js
View file

@ -221,7 +221,7 @@ describe('Transaction', function() {
// TODO:
// hashForSignature: [Function],
// FIXME: could be better
// FIXME: remove in 2.x.y
describe('signInput/validateInput', function() {
it('works for multi-sig redeem script', function() {
var tx = new Transaction()

262
test/transaction_builder.js Normal file
View file

@ -0,0 +1,262 @@
var assert = require('assert')
var ecdsa = require('../src/ecdsa')
var scripts = require('../src/scripts')
var Address = require('../src/address')
var BigInteger = require('bigi')
var ECKey = require('../src/eckey')
var Script = require('../src/script')
var Transaction = require('../src/transaction')
var TransactionBuilder = require('../src/transaction_builder')
var fixtures = require('./fixtures/transaction_builder')
describe('TransactionBuilder', function() {
var privAddress, privScript
var prevTx, prevTxHash
var privKey
var txb
beforeEach(function() {
txb = new TransactionBuilder()
prevTx = new Transaction()
prevTx.addOutput('1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH', 0)
prevTx.addOutput('1cMh228HTCiwS8ZsaakH8A8wze1JR5ZsP', 1)
prevTxHash = prevTx.getHash()
prevTxId = prevTx.getId()
privKey = new ECKey(BigInteger.ONE, false)
privAddress = privKey.pub.getAddress()
privScript = privAddress.toOutputScript()
value = 10000
})
describe('addInput', function() {
it('accepts a txHash, index [and sequence number]', function() {
var vin = txb.addInput(prevTxHash, 1, 54)
assert.equal(vin, 0)
var txin = txb.tx.ins[0]
assert.equal(txin.hash, prevTxHash)
assert.equal(txin.index, 1)
assert.equal(txin.sequence, 54)
assert.equal(txb.prevOutScripts[0], undefined)
})
it('accepts a txHash, index [, sequence number and scriptPubKey]', function() {
var vin = txb.addInput(prevTxHash, 1, 54, prevTx.outs[1].script)
assert.equal(vin, 0)
var txin = txb.tx.ins[0]
assert.equal(txin.hash, prevTxHash)
assert.equal(txin.index, 1)
assert.equal(txin.sequence, 54)
assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script)
})
it('accepts a prevTx, index [and sequence number]', function() {
var vin = txb.addInput(prevTx, 1, 54)
assert.equal(vin, 0)
var txin = txb.tx.ins[0]
assert.deepEqual(txin.hash, prevTxHash)
assert.equal(txin.index, 1)
assert.equal(txin.sequence, 54)
assert.equal(txb.prevOutScripts[0], prevTx.outs[1].script)
})
it('returns the input index', function() {
assert.equal(txb.addInput(prevTxHash, 0), 0)
assert.equal(txb.addInput(prevTxHash, 1), 1)
})
it('throws if prevOutScript is not supported', function() {
assert.throws(function() {
txb.addInput(prevTxHash, 0, undefined, Script.EMPTY)
}, /PrevOutScript not supported \(nonstandard\)/)
})
it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function() {
txb.addInput(prevTxHash, 0)
txb.sign(0, privKey)
assert.throws(function() {
txb.addInput(prevTxHash, 0)
}, /No, this would invalidate signatures/)
})
})
describe('addOutput', function() {
it('throws if SIGHASH_ALL has been used to sign any existing scriptSigs', function() {
txb.addInput(prevTxHash, 0)
txb.addOutput(privScript, value)
txb.sign(0, privKey)
assert.throws(function() {
txb.addOutput(privScript, 9000)
}, /No, this would invalidate signatures/)
})
})
describe('sign', function() {
describe('when prevOutScript is undefined', function() {
it('assumes pubKeyHash', function() {
txb.addInput(prevTxHash, 0)
txb.sign(0, privKey)
assert.strictEqual(txb.signatures[0].redeemScript, undefined)
assert.equal(txb.signatures[0].scriptType, 'pubkeyhash')
})
})
describe('when redeemScript is defined', function() {
it('assumes scriptHash', function() {
txb.addInput(prevTxHash, 0)
txb.sign(0, privKey, privScript)
assert.equal(txb.signatures[0].redeemScript, privScript)
})
it('throws if prevOutScript is not P2SH', function() {
txb.addInput(prevTx, 0)
assert.throws(function() {
txb.sign(0, privKey, privScript)
}, /PrevOutScript must be P2SH/)
})
it('throws if redeemScript is P2SH', function() {
txb.addInput(prevTxHash, 0)
var privScriptP2SH = scripts.scriptHashOutput(privScript.getHash())
assert.throws(function() {
txb.sign(0, privKey, privScriptP2SH)
}, /RedeemScript can\'t be P2SH/)
})
it('throws if redeemScript not supported', function() {
txb.addInput(prevTxHash, 0)
assert.throws(function() {
txb.sign(0, privKey, Script.EMPTY)
}, /RedeemScript not supported \(nonstandard\)/)
})
})
})
describe('build', function() {
fixtures.valid.build.forEach(function(f) {
it('builds the correct transaction', function() {
f.inputs.forEach(function(input) {
var prevTxScript
if (input.prevTxScript) {
prevTxScript = Script.fromASM(input.prevTxScript)
}
txb.addInput(input.prevTx, input.index, input.sequence, prevTxScript)
})
f.outputs.forEach(function(output) {
var script = Script.fromASM(output.script)
txb.addOutput(script, output.value)
})
f.inputs.forEach(function(input, index) {
var redeemScript
if (input.redeemScript) {
redeemScript = Script.fromASM(input.redeemScript)
}
input.privKeys.forEach(function(wif) {
var privKey = ECKey.fromWIF(wif)
txb.sign(index, privKey, redeemScript)
})
})
var tx = txb.build()
assert.equal(tx.getId(), f.txid)
})
})
fixtures.invalid.build.forEach(function(f) {
it('throws on ' + f.exception, function() {
f.inputs.forEach(function(input) {
var prevTxScript
if (input.prevTxScript) {
prevTxScript = Script.fromASM(input.prevTxScript)
}
txb.addInput(input.prevTx, input.index, input.sequence, prevTxScript)
})
f.outputs.forEach(function(output) {
var script = Script.fromASM(output.script)
txb.addOutput(script, output.value)
})
f.inputs.forEach(function(input, index) {
var redeemScript
if (input.redeemScript) {
redeemScript = Script.fromASM(input.redeemScript)
}
input.privKeys.forEach(function(wif) {
var privKey = ECKey.fromWIF(wif)
txb.sign(index, privKey, redeemScript)
})
})
assert.throws(function() {
txb.build()
}, new RegExp(f.exception))
})
})
})
describe('fromTransaction', function() {
fixtures.valid.build.forEach(function(f) {
it('builds the correct TransactionBuilder for ' + f.description, function() {
var tx = Transaction.fromHex(f.txhex)
var txb = TransactionBuilder.fromTransaction(tx)
assert.equal(txb.build().toHex(), f.txhex)
})
})
it('works for the P2SH multisig case', function() {
var privKeys = [
"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgwmaKkrx",
"91avARGdfge8E4tZfYLoxeJ5sGBdNJQH4kvjJoQFacbgww7vXtT"
].map(function(wif) { return ECKey.fromWIF(wif) })
var redeemScript = Script.fromASM("OP_2 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8 04c6047f9441ed7d6d3045406e95c07cd85c778e4b8cef3ca7abac09b95c709ee51ae168fea63dc339a3c58419466ceaeef7f632653266d0e1236431a950cfe52a OP_2 OP_CHECKMULTISIG")
txb.addInput("4971f016798a167331bcbc67248313fbc444c6e92e4416efd06964425588f5cf", 0)
txb.addOutput("1BgGZ9tcN4rm9KBzDn7KprQz87SZ26SAMH", 10000)
txb.sign(0, privKeys[0], redeemScript)
var tx = txb.buildIncomplete()
// in another galaxy...
// ... far, far away
var txb2 = TransactionBuilder.fromTransaction(tx)
// [you should] verify that Transaction is what you want...
// ... then sign it
txb2.sign(0, privKeys[1], redeemScript)
var tx2 = txb2.build()
assert.equal(tx2.toHex(), '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')
})
})
})

9
test/wallet.js
View file

@ -7,6 +7,7 @@ var scripts = require('../src/scripts')
var Address = require('../src/address')
var HDNode = require('../src/hdnode')
var Transaction = require('../src/transaction')
var TransactionBuilder = require('../src/transaction_builder')
var Wallet = require('../src/wallet')
var fixtureTxes = require('./fixtures/mainnet_tx')
@ -623,17 +624,17 @@ describe('Wallet', function() {
describe('signing', function(){
afterEach(function(){
Transaction.prototype.sign.restore()
TransactionBuilder.prototype.sign.restore()
})
it('signs the inputs with respective keys', function(){
var fee = 30000
sinon.stub(Transaction.prototype, "sign")
sinon.spy(TransactionBuilder.prototype, "sign")
var tx = wallet.createTx(to, value, fee)
assert(Transaction.prototype.sign.calledWith(0, wallet.getPrivateKeyForAddress(address2)))
assert(Transaction.prototype.sign.calledWith(1, wallet.getPrivateKeyForAddress(address1)))
assert(TransactionBuilder.prototype.sign.calledWith(0, wallet.getPrivateKeyForAddress(address2)))
assert(TransactionBuilder.prototype.sign.calledWith(1, wallet.getPrivateKeyForAddress(address1)))
})
})