@bitgo-beta/utxo-lib
Version:
Client-side Bitcoin JavaScript library
215 lines • 28.5 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.unspentSum = exports.addToPsbt = exports.addChangeOutputToPsbt = exports.addToTransactionBuilder = exports.toPrevOutput = exports.getOutputIdForInput = exports.formatOutputId = exports.parseOutputId = exports.toOutput = exports.isNonWitnessUnspent = void 0;
const bitcoinjs_lib_1 = require("bitcoinjs-lib");
const address_1 = require("../address");
const outputScripts_1 = require("./outputScripts");
const wallet_1 = require("./wallet");
function isNonWitnessUnspent(u) {
return Buffer.isBuffer(u.prevTx);
}
exports.isNonWitnessUnspent = isNonWitnessUnspent;
/**
* @return TxOutput from Unspent
*/
function toOutput(u, network) {
return {
script: address_1.toOutputScript(u.address, network),
value: u.value,
};
}
exports.toOutput = toOutput;
/**
* @param outputId
* @return TxOutPoint
*/
function parseOutputId(outputId) {
const parts = outputId.split(':');
if (parts.length !== 2) {
throw new Error(`invalid outputId, must have format txid:vout`);
}
const [txid, voutStr] = parts;
const vout = Number(voutStr);
if (txid.length !== 64) {
throw new Error(`invalid txid ${txid} ${txid.length}`);
}
if (Number.isNaN(vout) || vout < 0 || !Number.isSafeInteger(vout)) {
throw new Error(`invalid vout: must be integer >= 0`);
}
return { txid, vout };
}
exports.parseOutputId = parseOutputId;
/**
* @param txid
* @param vout
* @return outputId
*/
function formatOutputId({ txid, vout }) {
return `${txid}:${vout}`;
}
exports.formatOutputId = formatOutputId;
function getOutputIdForInput(i) {
return {
txid: Buffer.from(i.hash).reverse().toString('hex'),
vout: i.index,
};
}
exports.getOutputIdForInput = getOutputIdForInput;
/**
* @return PrevOutput from Unspent
*/
function toPrevOutput(u, network) {
return {
...parseOutputId(u.id),
...toOutput(u, network),
};
}
exports.toPrevOutput = toPrevOutput;
/**
* @param txb
* @param u
* @param sequence - sequenceId
*/
function addToTransactionBuilder(txb, u, sequence) {
const { txid, vout, script, value } = toPrevOutput(u, txb.network);
txb.addInput(txid, vout, sequence, script, value);
}
exports.addToTransactionBuilder = addToTransactionBuilder;
/**
* Add a verifiable change output to the PSBT. The change output and all data
* needed to verify it from public keys only are added to the PSBT.
*
* @param psbt the PSBT to add change output to
* @param rootWalletKeys keys that will be able to spend the output
* @param chain chain code to use for deriving scripts (and to determine script
* type) chain is an API parameter in the BitGo API, and may be
* any valid ChainCode
* @param index derivation index for the change address
* @param value value of the change output
*/
function addChangeOutputToPsbt(psbt, rootWalletKeys, chain, index, value) {
const walletKeys = rootWalletKeys.deriveForChainAndIndex(chain, index);
const scriptType = wallet_1.scriptTypeForChain(chain);
if (scriptType === 'p2tr') {
const payment = outputScripts_1.createPaymentP2tr(walletKeys.publicKeys);
const allLeafHashes = payment.redeems.map((r) => bitcoinjs_lib_1.taproot.hashTapLeaf(r.output));
psbt.addOutput({
script: payment.output,
value,
tapTree: payment.tapTree,
tapInternalKey: payment.internalPubkey,
tapBip32Derivation: [0, 1, 2].map((idx) => {
const pubkey = outputScripts_1.toXOnlyPublicKey(walletKeys.triple[idx].publicKey);
const leafHashes = [];
payment.redeems.forEach((r, idx) => {
if (r.pubkeys.find((pk) => pk.equals(pubkey))) {
leafHashes.push(allLeafHashes[idx]);
}
});
return {
leafHashes,
pubkey,
path: walletKeys.paths[idx],
masterFingerprint: rootWalletKeys.triple[idx].fingerprint,
};
}),
});
}
else {
const { scriptPubKey, witnessScript, redeemScript } = outputScripts_1.createOutputScript2of3(walletKeys.publicKeys, scriptType);
psbt.addOutput({
script: scriptPubKey,
value,
bip32Derivation: [0, 1, 2].map((idx) => ({
pubkey: walletKeys.triple[idx].publicKey,
path: walletKeys.paths[idx],
masterFingerprint: rootWalletKeys.triple[idx].fingerprint,
})),
});
const outputIndex = psbt.txOutputs.length - 1;
if (witnessScript) {
psbt.updateOutput(outputIndex, { witnessScript });
}
if (redeemScript) {
psbt.updateOutput(outputIndex, { redeemScript });
}
}
}
exports.addChangeOutputToPsbt = addChangeOutputToPsbt;
function addToPsbt(psbt, u, rootSigner, network) {
const { txid, vout, script, value } = toPrevOutput(u, network);
const { walletKeys, signerIndex, cosignerIndex } = rootSigner.deriveForChainAndIndex(u.chain, u.index);
const scriptType = wallet_1.scriptTypeForChain(u.chain);
psbt.addInput({
hash: txid,
index: vout,
});
const inputIndex = psbt.inputCount - 1;
if (wallet_1.isSegwit(u.chain)) {
psbt.updateInput(inputIndex, {
witnessUtxo: {
script,
value,
},
});
}
else {
if (!isNonWitnessUnspent(u)) {
throw new Error('Error, require previous tx to add to PSBT');
}
psbt.updateInput(inputIndex, { nonWitnessUtxo: u.prevTx });
}
if (scriptType === 'p2tr') {
const { controlBlock, witnessScript, leafVersion, leafHash } = outputScripts_1.createSpendScriptP2tr(walletKeys.publicKeys, [
walletKeys.triple[signerIndex].publicKey,
walletKeys.triple[cosignerIndex].publicKey,
]);
psbt.updateInput(inputIndex, {
tapLeafScript: [{ controlBlock, script: witnessScript, leafVersion }],
tapBip32Derivation: [signerIndex, cosignerIndex].map((idx) => ({
leafHashes: [leafHash],
pubkey: walletKeys.triple[idx].publicKey.slice(1),
path: walletKeys.paths[idx],
masterFingerprint: rootSigner.walletKeys.triple[idx].fingerprint,
})),
});
}
else {
const { witnessScript, redeemScript } = outputScripts_1.createOutputScript2of3(walletKeys.publicKeys, scriptType);
psbt.updateInput(inputIndex, {
bip32Derivation: [0, 1, 2].map((idx) => ({
pubkey: walletKeys.triple[idx].publicKey,
path: walletKeys.paths[idx],
masterFingerprint: rootSigner.walletKeys.triple[idx].fingerprint,
})),
});
if (witnessScript) {
psbt.updateInput(inputIndex, { witnessScript });
}
if (redeemScript) {
psbt.updateInput(inputIndex, { redeemScript });
}
}
}
exports.addToPsbt = addToPsbt;
/**
* Sum the values of the unspents.
* Throws error if sum is not a safe integer value, or if unspent amount types do not match `amountType`
* @param unspents - array of unspents to sum
* @param amountType - expected value type of unspents
* @return unspentSum - type matches amountType
*/
function unspentSum(unspents, amountType = 'number') {
if (amountType === 'bigint') {
return unspents.reduce((sum, u) => sum + u.value, BigInt(0));
}
else {
const sum = unspents.reduce((sum, u) => sum + u.value, Number(0));
if (!Number.isSafeInteger(sum)) {
throw new Error('unspent sum is not a safe integer number, consider using bigint');
}
return sum;
}
}
exports.unspentSum = unspentSum;
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{ TxOutput, taproot } from 'bitcoinjs-lib';\nimport { Network } from '..';\nimport { toOutputScript } from '../address';\nimport { createOutputScript2of3, createSpendScriptP2tr, createPaymentP2tr, toXOnlyPublicKey } from './outputScripts';\nimport { UtxoPsbt } from './UtxoPsbt';\nimport { UtxoTransaction } from './UtxoTransaction';\nimport { UtxoTransactionBuilder } from './UtxoTransactionBuilder';\nimport { isSegwit, ChainCode, RootWalletKeys, scriptTypeForChain, WalletUnspent, WalletUnspentSigner } from './wallet';\n\n/**\n * Public unspent data in BitGo-specific representation.\n */\nexport interface Unspent<TNumber extends number | bigint = number> {\n  /**\n   * Format: ${txid}:${vout}.\n   * Use `parseOutputId(id)` to parse.\n   */\n  id: string;\n  /**\n   * The network-specific encoded address.\n   * Use `toOutputScript(address, network)` to obtain scriptPubKey.\n   */\n  address: string;\n  /**\n   * The amount in satoshi.\n   */\n  value: TNumber;\n}\n\nexport interface NonWitnessUnspent<TNumber extends number | bigint = number> extends Unspent<TNumber> {\n  prevTx: Buffer;\n}\n\nexport function isNonWitnessUnspent<TNumber extends number | bigint = number>(\n  u: Unspent<TNumber>\n): u is NonWitnessUnspent<TNumber> {\n  return Buffer.isBuffer((u as NonWitnessUnspent<TNumber>).prevTx);\n}\n\n/**\n * @return TxOutput from Unspent\n */\nexport function toOutput<TNumber extends number | bigint>(u: Unspent<TNumber>, network: Network): TxOutput<TNumber> {\n  return {\n    script: toOutputScript(u.address, network),\n    value: u.value,\n  };\n}\n\n/**\n * @param outputId\n * @return TxOutPoint\n */\nexport function parseOutputId(outputId: string): TxOutPoint {\n  const parts = outputId.split(':');\n  if (parts.length !== 2) {\n    throw new Error(`invalid outputId, must have format txid:vout`);\n  }\n  const [txid, voutStr] = parts;\n  const vout = Number(voutStr);\n  if (txid.length !== 64) {\n    throw new Error(`invalid txid ${txid} ${txid.length}`);\n  }\n  if (Number.isNaN(vout) || vout < 0 || !Number.isSafeInteger(vout)) {\n    throw new Error(`invalid vout: must be integer >= 0`);\n  }\n  return { txid, vout };\n}\n\n/**\n * @param txid\n * @param vout\n * @return outputId\n */\nexport function formatOutputId({ txid, vout }: TxOutPoint): string {\n  return `${txid}:${vout}`;\n}\n\nexport function getOutputIdForInput(i: { hash: Buffer; index: number }): TxOutPoint {\n  return {\n    txid: Buffer.from(i.hash).reverse().toString('hex'),\n    vout: i.index,\n  };\n}\n\n/**\n * Reference to output of an existing transaction\n */\nexport type TxOutPoint = {\n  txid: string;\n  vout: number;\n};\n\n/**\n * Output reference and script data.\n * Suitable for use for `txb.addInput()`\n */\nexport type PrevOutput<TNumber extends number | bigint = number> = TxOutPoint & TxOutput<TNumber>;\n\n/**\n * @return PrevOutput from Unspent\n */\nexport function toPrevOutput<TNumber extends number | bigint>(\n  u: Unspent<TNumber>,\n  network: Network\n): PrevOutput<TNumber> {\n  return {\n    ...parseOutputId(u.id),\n    ...toOutput(u, network),\n  };\n}\n\n/**\n * @param txb\n * @param u\n * @param sequence - sequenceId\n */\nexport function addToTransactionBuilder<TNumber extends number | bigint>(\n  txb: UtxoTransactionBuilder<TNumber>,\n  u: Unspent<TNumber>,\n  sequence?: number\n): void {\n  const { txid, vout, script, value } = toPrevOutput(u, txb.network as Network);\n  txb.addInput(txid, vout, sequence, script, value);\n}\n\n/**\n * Add a verifiable change output to the PSBT. The change output and all data\n * needed to verify it from public keys only are added to the PSBT.\n *\n * @param psbt the PSBT to add change output to\n * @param rootWalletKeys keys that will be able to spend the output\n * @param chain chain code to use for deriving scripts (and to determine script\n *              type) chain is an API parameter in the BitGo API, and may be\n *              any valid ChainCode\n * @param index derivation index for the change address\n * @param value value of the change output\n */\nexport function addChangeOutputToPsbt(\n  psbt: UtxoPsbt<UtxoTransaction<bigint>>,\n  rootWalletKeys: RootWalletKeys,\n  chain: ChainCode,\n  index: number,\n  value: bigint\n): void {\n  const walletKeys = rootWalletKeys.deriveForChainAndIndex(chain, index);\n  const scriptType = scriptTypeForChain(chain);\n  if (scriptType === 'p2tr') {\n    const payment = createPaymentP2tr(walletKeys.publicKeys);\n    const allLeafHashes = payment.redeems!.map((r) => taproot.hashTapLeaf(r.output!));\n\n    psbt.addOutput({\n      script: payment.output!,\n      value,\n      tapTree: payment.tapTree,\n      tapInternalKey: payment.internalPubkey,\n      tapBip32Derivation: [0, 1, 2].map((idx) => {\n        const pubkey = toXOnlyPublicKey(walletKeys.triple[idx].publicKey);\n        const leafHashes: Buffer[] = [];\n        payment.redeems!.forEach((r, idx) => {\n          if (r.pubkeys!.find((pk) => pk.equals(pubkey))) {\n            leafHashes.push(allLeafHashes[idx]);\n          }\n        });\n        return {\n          leafHashes,\n          pubkey,\n          path: walletKeys.paths[idx],\n          masterFingerprint: rootWalletKeys.triple[idx].fingerprint,\n        };\n      }),\n    });\n  } else {\n    const { scriptPubKey, witnessScript, redeemScript } = createOutputScript2of3(walletKeys.publicKeys, scriptType);\n    psbt.addOutput({\n      script: scriptPubKey,\n      value,\n      bip32Derivation: [0, 1, 2].map((idx) => ({\n        pubkey: walletKeys.triple[idx].publicKey,\n        path: walletKeys.paths[idx],\n        masterFingerprint: rootWalletKeys.triple[idx].fingerprint,\n      })),\n    });\n    const outputIndex = psbt.txOutputs.length - 1;\n    if (witnessScript) {\n      psbt.updateOutput(outputIndex, { witnessScript });\n    }\n    if (redeemScript) {\n      psbt.updateOutput(outputIndex, { redeemScript });\n    }\n  }\n}\n\nexport function addToPsbt(\n  psbt: UtxoPsbt<UtxoTransaction<bigint>>,\n  u: WalletUnspent<bigint>,\n  rootSigner: WalletUnspentSigner<RootWalletKeys>,\n  network: Network\n): void {\n  const { txid, vout, script, value } = toPrevOutput(u, network);\n  const { walletKeys, signerIndex, cosignerIndex } = rootSigner.deriveForChainAndIndex(u.chain, u.index);\n  const scriptType = scriptTypeForChain(u.chain);\n  psbt.addInput({\n    hash: txid,\n    index: vout,\n  });\n  const inputIndex = psbt.inputCount - 1;\n  if (isSegwit(u.chain)) {\n    psbt.updateInput(inputIndex, {\n      witnessUtxo: {\n        script,\n        value,\n      },\n    });\n  } else {\n    if (!isNonWitnessUnspent(u)) {\n      throw new Error('Error, require previous tx to add to PSBT');\n    }\n    psbt.updateInput(inputIndex, { nonWitnessUtxo: u.prevTx });\n  }\n\n  if (scriptType === 'p2tr') {\n    const { controlBlock, witnessScript, leafVersion, leafHash } = createSpendScriptP2tr(walletKeys.publicKeys, [\n      walletKeys.triple[signerIndex].publicKey,\n      walletKeys.triple[cosignerIndex].publicKey,\n    ]);\n    psbt.updateInput(inputIndex, {\n      tapLeafScript: [{ controlBlock, script: witnessScript, leafVersion }],\n      tapBip32Derivation: [signerIndex, cosignerIndex].map((idx) => ({\n        leafHashes: [leafHash],\n        pubkey: walletKeys.triple[idx].publicKey.slice(1), // 32-byte x-only\n        path: walletKeys.paths[idx],\n        masterFingerprint: rootSigner.walletKeys.triple[idx].fingerprint,\n      })),\n    });\n  } else {\n    const { witnessScript, redeemScript } = createOutputScript2of3(walletKeys.publicKeys, scriptType);\n    psbt.updateInput(inputIndex, {\n      bip32Derivation: [0, 1, 2].map((idx) => ({\n        pubkey: walletKeys.triple[idx].publicKey,\n        path: walletKeys.paths[idx],\n        masterFingerprint: rootSigner.walletKeys.triple[idx].fingerprint,\n      })),\n    });\n    if (witnessScript) {\n      psbt.updateInput(inputIndex, { witnessScript });\n    }\n    if (redeemScript) {\n      psbt.updateInput(inputIndex, { redeemScript });\n    }\n  }\n}\n\n/**\n * Sum the values of the unspents.\n * Throws error if sum is not a safe integer value, or if unspent amount types do not match `amountType`\n * @param unspents - array of unspents to sum\n * @param amountType - expected value type of unspents\n * @return unspentSum - type matches amountType\n */\nexport function unspentSum<TNumber extends number | bigint>(\n  unspents: Unspent<TNumber>[],\n  amountType: 'number' | 'bigint' = 'number'\n): TNumber {\n  if (amountType === 'bigint') {\n    return unspents.reduce((sum, u) => sum + (u.value as bigint), BigInt(0)) as TNumber;\n  } else {\n    const sum = unspents.reduce((sum, u) => sum + (u.value as number), Number(0));\n    if (!Number.isSafeInteger(sum)) {\n      throw new Error('unspent sum is not a safe integer number, consider using bigint');\n    }\n    return sum as TNumber;\n  }\n}\n"]}