142 lines
5 KiB
JavaScript
142 lines
5 KiB
JavaScript
/* global describe, it */
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var assert = require('assert')
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var bitcoin = require('../../')
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var testnetUtils = require('./_testnet')
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var testnet = bitcoin.networks.testnet
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var alice = bitcoin.ECPair.fromWIF('cScfkGjbzzoeewVWmU2hYPUHeVGJRDdFt7WhmrVVGkxpmPP8BHWe', testnet)
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var bob = bitcoin.ECPair.fromWIF('cMkopUXKWsEzAjfa1zApksGRwjVpJRB3831qM9W4gKZsLwjHXA9x', testnet)
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describe('bitcoinjs-lib (transactions w/ CLTV)', function () {
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var hashType = bitcoin.Transaction.SIGHASH_ALL
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// IF MTP > utcSeconds, aQ can redeem, ELSE bQ, aQ joint redeem
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function cltvCheckSigOutput (aQ, bQ, utcSeconds) {
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return bitcoin.script.compile([
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bitcoin.opcodes.OP_IF,
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bitcoin.script.number.encode(utcSeconds),
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bitcoin.opcodes.OP_CHECKLOCKTIMEVERIFY,
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bitcoin.opcodes.OP_DROP,
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bitcoin.opcodes.OP_ELSE,
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bQ.getPublicKeyBuffer(),
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bitcoin.opcodes.OP_CHECKSIGVERIFY,
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bitcoin.opcodes.OP_ENDIF,
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aQ.getPublicKeyBuffer(),
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bitcoin.opcodes.OP_CHECKSIG
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])
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}
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function utcNow () {
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return Math.floor(Date.now() / 1000)
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}
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// expiry past, {Alice's signature} OP_TRUE
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it('can create (and broadcast via 3PBP) a Transaction where Alice can redeem the output after the expiry', function (done) {
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this.timeout(30000)
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// three hours ago
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var timeUtc = utcNow() - (3600 * 3)
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var redeemScript = cltvCheckSigOutput(alice, bob, timeUtc)
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var scriptPubKey = bitcoin.script.scriptHash.output.encode(bitcoin.crypto.hash160(redeemScript))
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var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
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// fund the P2SH(CLTV) address
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testnetUtils.faucet(address, 2e4, function (err, unspent) {
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if (err) return done(err)
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var tx = new bitcoin.TransactionBuilder(testnet)
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tx.setLockTime(timeUtc)
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tx.addInput(unspent.txId, 0, 0xfffffffe)
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tx.addOutput(testnetUtils.RETURN_ADDRESS, 1e4)
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var txRaw = tx.buildIncomplete()
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var signatureHash = txRaw.hashForSignature(0, redeemScript, hashType)
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// {Alice's signature} OP_TRUE
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var redeemScriptSig = bitcoin.script.scriptHash.input.encode([
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alice.sign(signatureHash).toScriptSignature(hashType),
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bitcoin.opcodes.OP_TRUE
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], redeemScript)
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txRaw.setInputScript(0, redeemScriptSig)
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testnetUtils.transactions.propagate(txRaw.toHex(), done)
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})
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})
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// expiry ignored, {Bob's signature} {Alice's signature} OP_FALSE
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it('can create (and broadcast via 3PBP) a Transaction where Alice and Bob can redeem the output at any time', function (done) {
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this.timeout(30000)
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// two hours ago
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var timeUtc = utcNow() - (3600 * 2)
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var redeemScript = cltvCheckSigOutput(alice, bob, timeUtc)
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var scriptPubKey = bitcoin.script.scriptHash.output.encode(bitcoin.crypto.hash160(redeemScript))
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var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
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// fund the P2SH(CLTV) address
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testnetUtils.faucet(address, 2e4, function (err, unspent) {
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if (err) return done(err)
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var tx = new bitcoin.TransactionBuilder(testnet)
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tx.setLockTime(timeUtc)
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tx.addInput(unspent.txId, 0, 0xfffffffe)
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tx.addOutput(testnetUtils.RETURN_ADDRESS, 1e4)
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var txRaw = tx.buildIncomplete()
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var signatureHash = txRaw.hashForSignature(0, redeemScript, hashType)
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var redeemScriptSig = bitcoin.script.scriptHash.input.encode([
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alice.sign(signatureHash).toScriptSignature(hashType),
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bob.sign(signatureHash).toScriptSignature(hashType),
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bitcoin.opcodes.OP_FALSE
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], redeemScript)
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txRaw.setInputScript(0, redeemScriptSig)
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testnetUtils.transactions.propagate(txRaw.toHex(), done)
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})
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})
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// expiry in the future, {Alice's signature} OP_TRUE
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it('can create (but fail to broadcast via 3PBP) a Transaction where Alice attempts to redeem before the expiry', function (done) {
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this.timeout(30000)
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// two hours from now
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var timeUtc = utcNow() + (3600 * 2)
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var redeemScript = cltvCheckSigOutput(alice, bob, timeUtc)
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var scriptPubKey = bitcoin.script.scriptHash.output.encode(bitcoin.crypto.hash160(redeemScript))
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var address = bitcoin.address.fromOutputScript(scriptPubKey, testnet)
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// fund the P2SH(CLTV) address
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testnetUtils.faucet(address, 2e4, function (err, unspent) {
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if (err) return done(err)
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var tx = new bitcoin.TransactionBuilder(testnet)
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tx.setLockTime(timeUtc)
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tx.addInput(unspent.txId, 0, 0xfffffffe)
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tx.addOutput(testnetUtils.RETURN_ADDRESS, 1e4)
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var txRaw = tx.buildIncomplete()
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var signatureHash = txRaw.hashForSignature(0, redeemScript, hashType)
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// {Alice's signature} OP_TRUE
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var redeemScriptSig = bitcoin.script.scriptHash.input.encode([
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alice.sign(signatureHash).toScriptSignature(hashType),
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bitcoin.opcodes.OP_TRUE
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], redeemScript)
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txRaw.setInputScript(0, redeemScriptSig)
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testnetUtils.transactions.propagate(txRaw.toHex(), function (err) {
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assert.throws(function () {
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if (err) throw err
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}, /Error: 64: non-final/)
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done()
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})
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})
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})
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})
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