@btc-vision/transaction
Version:
OPNet transaction library allows you to create and sign transactions for the OPNet network.
259 lines (258 loc) • 9.9 kB
JavaScript
import { TransactionType } from '../enums/TransactionType.js';
import { crypto as bitCrypto, PaymentType, toXOnly, } from '@btc-vision/bitcoin';
import { MINIMUM_AMOUNT_CA, MINIMUM_AMOUNT_REWARD, TransactionBuilder, } from './TransactionBuilder.js';
import { DeploymentGenerator, versionBuffer, } from '../../generators/builders/DeploymentGenerator.js';
import { EcKeyPair } from '../../keypair/EcKeyPair.js';
import { BitcoinUtils } from '../../utils/BitcoinUtils.js';
import { Compressor } from '../../bytecode/Compressor.js';
import { SharedInteractionTransaction } from './SharedInteractionTransaction.js';
import { Address } from '../../keypair/Address.js';
import { ChallengeGenerator } from '../mineable/ChallengeGenerator.js';
export class DeploymentTransaction extends TransactionBuilder {
constructor(parameters) {
super(parameters);
this.type = TransactionType.DEPLOYMENT;
this.tapLeafScript = null;
this.deploymentVersion = 0x00;
this.targetScriptRedeem = null;
this.leftOverFundsScriptRedeem = null;
this.customFinalizer = (_inputIndex, input) => {
if (!this.tapLeafScript) {
throw new Error('Tap leaf script is required');
}
if (!input.tapScriptSig) {
throw new Error('Tap script signature is required');
}
const scriptSolution = [
this.randomBytes,
input.tapScriptSig[0].signature,
input.tapScriptSig[1].signature,
];
const witness = scriptSolution
.concat(this.tapLeafScript.script)
.concat(this.tapLeafScript.controlBlock);
return {
finalScriptWitness: TransactionBuilder.witnessStackToScriptWitness(witness),
};
};
this.bytecode = Compressor.compress(Buffer.concat([versionBuffer, parameters.bytecode]));
this.verifyBytecode();
if (parameters.calldata) {
this.calldata = parameters.calldata;
this.verifyCalldata();
}
if (!parameters.preimage)
throw new Error('Preimage is required');
this.randomBytes = parameters.randomBytes || BitcoinUtils.rndBytes();
this.preimage = parameters.preimage;
this.rewardChallenge = ChallengeGenerator.generateMineableReward(this.preimage, this.network);
this.contractSeed = this.getContractSeed();
this.contractSigner = EcKeyPair.fromSeedKeyPair(this.contractSeed, this.network);
this.deploymentGenerator = new DeploymentGenerator(Buffer.from(this.signer.publicKey), this.contractSignerXOnlyPubKey(), this.network);
this.compiledTargetScript = this.deploymentGenerator.compile(this.bytecode, this.randomBytes, this.preimage, this.priorityFee, this.calldata);
this.scriptTree = this.getScriptTree();
this.internalInit();
this._contractPubKey = '0x' + this.contractSeed.toString('hex');
this._contractAddress = new Address(this.contractSeed);
}
get contractPubKey() {
return this._contractPubKey;
}
get contractAddress() {
return this._contractAddress;
}
get p2trAddress() {
return this.to || this.getScriptAddress();
}
getRndBytes() {
return this.randomBytes;
}
getPreimage() {
return this.preimage;
}
getContractAddress() {
if (this._computedAddress) {
return this._computedAddress;
}
this._computedAddress = EcKeyPair.p2op(this.contractSeed, this.network, this.deploymentVersion);
return this._computedAddress;
}
contractSignerXOnlyPubKey() {
return toXOnly(Buffer.from(this.contractSigner.publicKey));
}
async buildTransaction() {
if (!this.to) {
this.to = this.getScriptAddress();
}
const selectedRedeem = this.contractSigner
? this.targetScriptRedeem
: this.leftOverFundsScriptRedeem;
if (!selectedRedeem) {
throw new Error('Left over funds script redeem is required');
}
if (!selectedRedeem.redeemVersion) {
throw new Error('Left over funds script redeem version is required');
}
if (!selectedRedeem.output) {
throw new Error('Left over funds script redeem output is required');
}
this.tapLeafScript = {
leafVersion: selectedRedeem.redeemVersion,
script: selectedRedeem.output,
controlBlock: this.getWitness(),
};
this.addInputsFromUTXO();
const amountSpent = this.getTransactionOPNetFee();
let amountToCA;
if (amountSpent > MINIMUM_AMOUNT_REWARD + MINIMUM_AMOUNT_CA) {
amountToCA = MINIMUM_AMOUNT_CA;
}
else {
amountToCA = amountSpent;
}
this.addOutput({
value: Number(amountToCA),
address: this.getContractAddress(),
});
if (amountToCA === MINIMUM_AMOUNT_CA &&
amountSpent - MINIMUM_AMOUNT_CA > MINIMUM_AMOUNT_REWARD) {
this.addOutput({
value: Number(amountSpent - amountToCA),
address: this.rewardChallenge.address,
});
}
await this.addRefundOutput(amountSpent + this.addOptionalOutputsAndGetAmount());
}
async signInputsWalletBased(transaction) {
const signer = this.signer;
await this.signInput(transaction, transaction.data.inputs[0], 0, this.contractSigner);
await signer.multiSignPsbt([transaction]);
for (let i = 0; i < transaction.data.inputs.length; i++) {
if (i === 0) {
transaction.finalizeInput(i, this.customFinalizer.bind(this));
}
else {
try {
transaction.finalizeInput(i, this.customFinalizerP2SH.bind(this));
}
catch (e) {
transaction.finalizeInput(i);
}
}
}
}
async signInputs(transaction) {
if (!this.contractSigner) {
await super.signInputs(transaction);
return;
}
if ('multiSignPsbt' in this.signer) {
await this.signInputsWalletBased(transaction);
return;
}
for (let i = 0; i < transaction.data.inputs.length; i++) {
if (i === 0) {
transaction.signInput(0, this.contractSigner);
transaction.signInput(0, this.getSignerKey());
transaction.finalizeInput(0, this.customFinalizer.bind(this));
}
else {
transaction.signInput(i, this.getSignerKey());
try {
transaction.finalizeInput(i, this.customFinalizerP2SH.bind(this));
}
catch (e) {
transaction.finalizeInput(i);
}
}
}
}
generateScriptAddress() {
return {
name: PaymentType.P2TR,
internalPubkey: this.internalPubKeyToXOnly(),
network: this.network,
scriptTree: this.scriptTree,
};
}
generateTapData() {
const selectedRedeem = this.contractSigner
? this.targetScriptRedeem
: this.leftOverFundsScriptRedeem;
if (!selectedRedeem) {
throw new Error('Left over funds script redeem is required');
}
if (!this.scriptTree) {
throw new Error('Script tree is required');
}
return {
name: PaymentType.P2TR,
internalPubkey: this.internalPubKeyToXOnly(),
network: this.network,
scriptTree: this.scriptTree,
redeem: selectedRedeem,
};
}
verifyCalldata() {
if (this.calldata &&
this.calldata.length > SharedInteractionTransaction.MAXIMUM_CALLDATA_SIZE) {
throw new Error('Calldata size overflow.');
}
}
verifyBytecode() {
if (!this.bytecode)
throw new Error('Bytecode is required');
if (this.bytecode.length > DeploymentTransaction.MAXIMUM_CONTRACT_SIZE) {
throw new Error('Contract size overflow.');
}
}
getContractSeed() {
if (!this.bytecode) {
throw new Error('Bytecode is required');
}
const deployerPubKey = this.internalPubKeyToXOnly();
const salt = bitCrypto.hash256(this.randomBytes);
const sha256OfBytecode = bitCrypto.hash256(this.bytecode);
const buf = Buffer.concat([deployerPubKey, salt, sha256OfBytecode]);
return bitCrypto.hash256(buf);
}
getPubKeys() {
const pubkeys = [Buffer.from(this.signer.publicKey)];
if (this.contractSigner) {
pubkeys.push(Buffer.from(this.contractSigner.publicKey));
}
return pubkeys;
}
generateRedeemScripts() {
this.targetScriptRedeem = {
name: PaymentType.P2TR,
output: this.compiledTargetScript,
redeemVersion: 192,
};
this.leftOverFundsScriptRedeem = {
name: PaymentType.P2TR,
output: this.getLeafScript(),
redeemVersion: 192,
};
}
getLeafScript() {
return TransactionBuilder.LOCK_LEAF_SCRIPT;
}
getScriptTree() {
if (!this.bytecode) {
throw new Error('Contract bytecode is required');
}
this.generateRedeemScripts();
return [
{
output: this.compiledTargetScript,
version: 192,
},
{
output: this.getLeafScript(),
version: 192,
},
];
}
}
DeploymentTransaction.MAXIMUM_CONTRACT_SIZE = 128 * 1024;