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• [DIR] ..
• [FILE] PsbtOutputs.d.ts
• [FILE] PsbtOutputs.d.ts.map
• [FILE] PsbtOutputs.js
• [FILE] RootNodes.d.ts
• [FILE] RootNodes.d.ts.map
• [FILE] RootNodes.js

Просмотр файла: RootNodes.js

"use strict";
/**
 * Contains helper methods for getting and sorting root nodes from a PSBT.
 */
Object.defineProperty(exports, "__esModule", { value: true });
exports.ErrorNoMultiSigInputFound = void 0;
exports.getUnsortedRootNodes = getUnsortedRootNodes;
exports.sortRootNodes = sortRootNodes;
exports.getSortedRootNodes = getSortedRootNodes;
const assert = require("assert");
const bs58check = require("bs58check");
const types_1 = require("../../types");
const bip32_1 = require("bip32");
const noble_ecc_1 = require("../../../noble_ecc");
const outputScripts_1 = require("../../outputScripts");
const transaction_1 = require("../../transaction");
const Psbt_1 = require("../Psbt");
/**
 * Error thrown when no multi-sig input is found in a PSBT.
 * */
class ErrorNoMultiSigInputFound extends Error {
    constructor(message) {
        super(message);
    }
}
exports.ErrorNoMultiSigInputFound = ErrorNoMultiSigInputFound;
/**
 * Retrieves unsorted root BIP32Interface nodes from a PSBT if available.
 * @param psbt - The PSBT from which to extract the global Xpubs.
 * @returns An array of BIP32Interface objects or undefined if not available.
 */
function getUnsortedRootNodes(psbt) {
    const bip32s = psbt.data.globalMap.globalXpub?.map((xpub) => (0, bip32_1.BIP32Factory)(noble_ecc_1.ecc).fromBase58(bs58check.encode(xpub.extendedPubkey)));
    assert(!bip32s || (0, types_1.isTriple)(bip32s), `Invalid globalXpubs in PSBT. Expected 3 or none. Got ${bip32s?.length}`);
    return bip32s;
}
/**
 * Determines if the given public keys' permutation matches a specified script.
 * @param params - Object containing public keys, permutation, script public key, script type, and network.
 * @returns A boolean indicating if the permutation matches the script.
 */
function matchesScript({ pubKeys, perm, scriptPubKey, parsedScriptType, network, }) {
    const pubKeysPerm = [pubKeys[perm[0]], pubKeys[perm[1]], pubKeys[perm[2]]];
    const scriptTypes = (0, Psbt_1.toScriptType2Of3s)(parsedScriptType);
    return scriptTypes.some((scriptType) => (0, outputScripts_1.createOutputScript2of3)(pubKeysPerm, scriptType, network).scriptPubKey.equals(scriptPubKey));
}
/**
 * Finds the correct order of public keys to match a given script.
 * @param pubKeys - Array of public keys involved in the script.
 * @param scriptPubKey - The script public key to match against.
 * @param parsedScriptType - The parsed script type.
 * @param network - Bitcoin network.
 * @returns The order of public keys that match the script.
 */
function findSortOrderOfPubKeys(pubKeys, scriptPubKey, parsedScriptType, network) {
    const permutations = [
        [0, 1, 2],
        [0, 2, 1],
        [1, 0, 2],
        [1, 2, 0],
        [2, 0, 1],
        [2, 1, 0],
    ];
    const order = permutations.find((perm) => matchesScript({ pubKeys, perm, scriptPubKey, parsedScriptType, network }));
    assert(order, 'Could not find sort order of multi sig public keys');
    return order;
}
/**
 * Extracts multi-sig input data, including script type, script public key, and derivation path, from the first relevant PSBT input.
 * @param psbt - The PSBT to extract data from.
 * @returns An object containing the parsed script type, script public key, and derivation path.
 */
function getFirstMultiSigInputData(psbt) {
    function getScriptPubKey(input, prevOutIndex) {
        const scriptPubKey = input.witnessUtxo?.script ??
            (input.nonWitnessUtxo
                ? (0, transaction_1.createTransactionFromBuffer)(input.nonWitnessUtxo, psbt.network, { amountType: 'bigint' }).outs[prevOutIndex]
                    .script
                : undefined);
        assert(scriptPubKey, 'Input scriptPubKey can not be found');
        return scriptPubKey;
    }
    function getDerivationPath(input) {
        const bip32Dv = input?.bip32Derivation ?? input?.tapBip32Derivation;
        assert(bip32Dv?.length, 'Input Bip32Derivation can not be found');
        return bip32Dv[0].path;
    }
    const txInputs = psbt.txInputs;
    for (let i = 0; i < psbt.data.inputs.length; i++) {
        const input = psbt.data.inputs[i];
        const parsedScriptType = (0, Psbt_1.getPsbtInputScriptType)(input);
        if (parsedScriptType === 'p2shP2pk') {
            continue;
        }
        const scriptPubKey = getScriptPubKey(input, txInputs[i].index);
        const derivationPath = getDerivationPath(input);
        return { parsedScriptType, scriptPubKey, derivationPath };
    }
    throw new ErrorNoMultiSigInputFound('No multi sig input found');
}
/**
 * Sorts given root nodes based on the script compatibility with the PSBT's multi-sig inputs.
 * @param psbt - The PSBT containing multi-sig inputs.
 * @param rootNodes - Array of root nodes to sort.
 * @returns An array of BIP32Interface objects in the order that matches the multi-sig script.
 */
function sortRootNodes(psbt, rootNodes) {
    const { parsedScriptType, scriptPubKey, derivationPath } = getFirstMultiSigInputData(psbt);
    const pubKeys = rootNodes.map((rootNode) => rootNode.derivePath(derivationPath).publicKey);
    const order = findSortOrderOfPubKeys(pubKeys, scriptPubKey, parsedScriptType, psbt.network);
    return order.map((i) => rootNodes[i]);
}
/**
 * Retrieves sorted root nodes from a PSBT, ensuring they are ordered according to script compatibility.
 * @param psbt - The PSBT to extract and sort root nodes from.
 * @returns An array of sorted BIP32Interface root nodes.
 */
function getSortedRootNodes(psbt) {
    const unsortedRootNodes = getUnsortedRootNodes(psbt);
    assert(unsortedRootNodes, 'Could not find root nodes in PSBT');
    return sortRootNodes(psbt, unsortedRootNodes);
}
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The PSBT from which to extract the global Xpubs.\n * @returns An array of BIP32Interface objects or undefined if not available.\n */\nexport function getUnsortedRootNodes(psbt: UtxoPsbt): Triple<BIP32Interface> | undefined {\n  const bip32s = psbt.data.globalMap.globalXpub?.map((xpub) =>\n    BIP32Factory(eccLib).fromBase58(bs58check.encode(xpub.extendedPubkey))\n  );\n  assert(!bip32s || isTriple(bip32s), `Invalid globalXpubs in PSBT. Expected 3 or none. Got ${bip32s?.length}`);\n  return bip32s;\n}\n\n/**\n * Determines if the given public keys' permutation matches a specified script.\n * @param params - Object containing public keys, permutation, script public key, script type, and network.\n * @returns A boolean indicating if the permutation matches the script.\n */\nfunction matchesScript({\n  pubKeys,\n  perm,\n  scriptPubKey,\n  parsedScriptType,\n  network,\n}: {\n  pubKeys: Buffer[];\n  perm: Triple<number>;\n  scriptPubKey: Buffer;\n  parsedScriptType: ParsedScriptType2Of3;\n  network: Network;\n}): boolean {\n  const pubKeysPerm: Triple<Buffer> = [pubKeys[perm[0]], pubKeys[perm[1]], pubKeys[perm[2]]];\n  const scriptTypes = toScriptType2Of3s(parsedScriptType);\n  return scriptTypes.some((scriptType) =>\n    createOutputScript2of3(pubKeysPerm, scriptType, network).scriptPubKey.equals(scriptPubKey)\n  );\n}\n\n/**\n * Finds the correct order of public keys to match a given script.\n * @param pubKeys - Array of public keys involved in the script.\n * @param scriptPubKey - The script public key to match against.\n * @param parsedScriptType - The parsed script type.\n * @param network - Bitcoin network.\n * @returns The order of public keys that match the script.\n */\nfunction findSortOrderOfPubKeys(\n  pubKeys: Triple<Buffer>,\n  scriptPubKey: Buffer,\n  parsedScriptType: ParsedScriptType2Of3,\n  network: Network\n): Triple<number> {\n  const permutations: Array<Triple<number>> = [\n    [0, 1, 2],\n    [0, 2, 1],\n    [1, 0, 2],\n    [1, 2, 0],\n    [2, 0, 1],\n    [2, 1, 0],\n  ];\n\n  const order = permutations.find((perm) => matchesScript({ pubKeys, perm, scriptPubKey, parsedScriptType, network }));\n  assert(order, 'Could not find sort order of multi sig public keys');\n  return order;\n}\n\n/**\n * Extracts multi-sig input data, including script type, script public key, and derivation path, from the first relevant PSBT input.\n * @param psbt - The PSBT to extract data from.\n * @returns An object containing the parsed script type, script public key, and derivation path.\n */\nfunction getFirstMultiSigInputData(psbt: UtxoPsbt): {\n  parsedScriptType: ParsedScriptType2Of3;\n  scriptPubKey: Buffer;\n  derivationPath: string;\n} {\n  function getScriptPubKey(input: PsbtInput, prevOutIndex: number) {\n    const scriptPubKey =\n      input.witnessUtxo?.script ??\n      (input.nonWitnessUtxo\n        ? createTransactionFromBuffer(input.nonWitnessUtxo, psbt.network, { amountType: 'bigint' }).outs[prevOutIndex]\n            .script\n        : undefined);\n    assert(scriptPubKey, 'Input scriptPubKey can not be found');\n    return scriptPubKey;\n  }\n\n  function getDerivationPath(input: PsbtInput) {\n    const bip32Dv = input?.bip32Derivation ?? input?.tapBip32Derivation;\n    assert(bip32Dv?.length, 'Input Bip32Derivation can not be found');\n    return bip32Dv[0].path;\n  }\n\n  const txInputs = psbt.txInputs;\n\n  for (let i = 0; i < psbt.data.inputs.length; i++) {\n    const input = psbt.data.inputs[i];\n    const parsedScriptType = getPsbtInputScriptType(input);\n    if (parsedScriptType === 'p2shP2pk') {\n      continue;\n    }\n    const scriptPubKey = getScriptPubKey(input, txInputs[i].index);\n    const derivationPath = getDerivationPath(input);\n    return { parsedScriptType, scriptPubKey, derivationPath };\n  }\n\n  throw new ErrorNoMultiSigInputFound('No multi sig input found');\n}\n\n/**\n * Sorts given root nodes based on the script compatibility with the PSBT's multi-sig inputs.\n * @param psbt - The PSBT containing multi-sig inputs.\n * @param rootNodes - Array of root nodes to sort.\n * @returns An array of BIP32Interface objects in the order that matches the multi-sig script.\n */\nexport function sortRootNodes(psbt: UtxoPsbt, rootNodes: Triple<BIP32Interface>): Triple<BIP32Interface> {\n  const { parsedScriptType, scriptPubKey, derivationPath } = getFirstMultiSigInputData(psbt);\n  const pubKeys = rootNodes.map((rootNode) => rootNode.derivePath(derivationPath).publicKey) as Triple<Buffer>;\n  const order = findSortOrderOfPubKeys(pubKeys, scriptPubKey, parsedScriptType, psbt.network);\n  return order.map((i) => rootNodes[i]) as Triple<BIP32Interface>;\n}\n\n/**\n * Retrieves sorted root nodes from a PSBT, ensuring they are ordered according to script compatibility.\n * @param psbt - The PSBT to extract and sort root nodes from.\n * @returns An array of sorted BIP32Interface root nodes.\n */\nexport function getSortedRootNodes(psbt: UtxoPsbt): Triple<BIP32Interface> {\n  const unsortedRootNodes = getUnsortedRootNodes(psbt);\n  assert(unsortedRootNodes, 'Could not find root nodes in PSBT');\n  return sortRootNodes(psbt, unsortedRootNodes);\n}\n"]}

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