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Текущая директория: /opt/BitGoJS/modules/utxo-core/dist/src/descriptor/psbt
Просмотр файла: findDescriptors.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.findDescriptorForInput = findDescriptorForInput;
exports.findDescriptorForOutput = findDescriptorForOutput;
/**
* Find a definite descriptor in the descriptor map that matches the given script.
* @param script
* @param descriptorMap
*/
function findDescriptorWithoutDerivation(script, descriptorMap) {
for (const descriptor of descriptorMap.values()) {
if (!descriptor.hasWildcard()) {
if (Buffer.from(descriptor.scriptPubkey()).equals(script)) {
return { descriptor, index: undefined };
}
}
}
return undefined;
}
/**
* Find a descriptor in the descriptor map that matches the given script and derivation index.
* @param script
* @param index
* @param descriptorMap
* @returns DescriptorWithIndex if found, undefined otherwise
*/
function findDescriptorForDerivationIndex(script, index, descriptorMap) {
for (const descriptor of descriptorMap.values()) {
if (descriptor.hasWildcard() && Buffer.from(descriptor.atDerivationIndex(index).scriptPubkey()).equals(script)) {
return { descriptor, index };
}
}
return undefined;
}
function getDerivationIndexFromPath(path) {
const indexStr = path.split('/').pop();
if (!indexStr) {
throw new Error(`Invalid derivation path ${path}`);
}
const index = parseInt(indexStr, 10);
if (index.toString() !== indexStr) {
throw new Error(`Invalid derivation path ${path}`);
}
return index;
}
/**
* Wrapper around findDescriptorForDerivationPath that tries multiple derivation paths.
* @param script
* @param derivationPaths
* @param descriptorMap
*/
function findDescriptorForAnyDerivationPath(script, derivationPaths, descriptorMap) {
const derivationIndexSet = new Set(derivationPaths.map((p) => getDerivationIndexFromPath(p)));
for (const index of [...derivationIndexSet]) {
const desc = findDescriptorForDerivationIndex(script, index, descriptorMap);
if (desc) {
return desc;
}
}
return undefined;
}
function getDerivationPaths(v) {
if ('bip32Derivation' in v && v.bip32Derivation) {
return v.bip32Derivation.map((v) => v.path);
}
if ('tapBip32Derivation' in v && v.tapBip32Derivation) {
return v.tapBip32Derivation.map((v) => v.path).filter((v) => v !== '' && v !== 'm');
}
return undefined;
}
/**
* @param input
* @param descriptorMap
* @returns DescriptorWithIndex for the input if found, undefined otherwise
*/
function findDescriptorForInput(input, descriptorMap) {
const script = input.witnessUtxo?.script;
if (!script) {
throw new Error('Missing script');
}
const derivationPaths = getDerivationPaths(input) ?? [];
return (findDescriptorWithoutDerivation(script, descriptorMap) ??
findDescriptorForAnyDerivationPath(script, derivationPaths, descriptorMap));
}
/**
* @param script - the output script
* @param output - the PSBT output
* @param descriptorMap
* @returns DescriptorWithIndex for the output if found, undefined otherwise
*/
function findDescriptorForOutput(script, output, descriptorMap) {
const derivationPaths = getDerivationPaths(output);
return (findDescriptorWithoutDerivation(script, descriptorMap) ??
(derivationPaths === undefined
? undefined
: findDescriptorForAnyDerivationPath(script, derivationPaths, descriptorMap)));
}
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index: undefined };\n\n/**\n * Find a definite descriptor in the descriptor map that matches the given script.\n * @param script\n * @param descriptorMap\n */\nfunction findDescriptorWithoutDerivation(\n  script: Buffer,\n  descriptorMap: DescriptorMap\n): DescriptorWithoutIndex | undefined {\n  for (const descriptor of descriptorMap.values()) {\n    if (!descriptor.hasWildcard()) {\n      if (Buffer.from(descriptor.scriptPubkey()).equals(script)) {\n        return { descriptor, index: undefined };\n      }\n    }\n  }\n\n  return undefined;\n}\n\ntype DescriptorWithIndex = { descriptor: Descriptor; index: number };\n\n/**\n * Find a descriptor in the descriptor map that matches the given script and derivation index.\n * @param script\n * @param index\n * @param descriptorMap\n * @returns DescriptorWithIndex if found, undefined otherwise\n */\nfunction findDescriptorForDerivationIndex(\n  script: Buffer,\n  index: number,\n  descriptorMap: DescriptorMap\n): DescriptorWithIndex | undefined {\n  for (const descriptor of descriptorMap.values()) {\n    if (descriptor.hasWildcard() && Buffer.from(descriptor.atDerivationIndex(index).scriptPubkey()).equals(script)) {\n      return { descriptor, index };\n    }\n  }\n\n  return undefined;\n}\n\nfunction getDerivationIndexFromPath(path: string): number {\n  const indexStr = path.split('/').pop();\n  if (!indexStr) {\n    throw new Error(`Invalid derivation path ${path}`);\n  }\n  const index = parseInt(indexStr, 10);\n  if (index.toString() !== indexStr) {\n    throw new Error(`Invalid derivation path ${path}`);\n  }\n  return index;\n}\n\n/**\n * Wrapper around findDescriptorForDerivationPath that tries multiple derivation paths.\n * @param script\n * @param derivationPaths\n * @param descriptorMap\n */\nfunction findDescriptorForAnyDerivationPath(\n  script: Buffer,\n  derivationPaths: string[],\n  descriptorMap: DescriptorMap\n): DescriptorWithIndex | undefined {\n  const derivationIndexSet = new Set(derivationPaths.map((p) => getDerivationIndexFromPath(p)));\n  for (const index of [...derivationIndexSet]) {\n    const desc = findDescriptorForDerivationIndex(script, index, descriptorMap);\n    if (desc) {\n      return desc;\n    }\n  }\n\n  return undefined;\n}\n\ntype WithBip32Derivation = { bip32Derivation?: { path: string }[] };\ntype WithTapBip32Derivation = { tapBip32Derivation?: { path: string }[] };\n\nfunction getDerivationPaths(v: WithBip32Derivation | WithTapBip32Derivation): string[] | undefined {\n  if ('bip32Derivation' in v && v.bip32Derivation) {\n    return v.bip32Derivation.map((v) => v.path);\n  }\n  if ('tapBip32Derivation' in v && v.tapBip32Derivation) {\n    return v.tapBip32Derivation.map((v) => v.path).filter((v) => v !== '' && v !== 'm');\n  }\n  return undefined;\n}\n\n/**\n * @param input\n * @param descriptorMap\n * @returns DescriptorWithIndex for the input if found, undefined otherwise\n */\nexport function findDescriptorForInput(\n  input: PsbtInput,\n  descriptorMap: DescriptorMap\n): DescriptorWithIndex | DescriptorWithoutIndex | undefined {\n  const script = input.witnessUtxo?.script;\n  if (!script) {\n    throw new Error('Missing script');\n  }\n  const derivationPaths = getDerivationPaths(input) ?? [];\n  return (\n    findDescriptorWithoutDerivation(script, descriptorMap) ??\n    findDescriptorForAnyDerivationPath(script, derivationPaths, descriptorMap)\n  );\n}\n\n/**\n * @param script - the output script\n * @param output - the PSBT output\n * @param descriptorMap\n * @returns DescriptorWithIndex for the output if found, undefined otherwise\n */\nexport function findDescriptorForOutput(\n  script: Buffer,\n  output: PsbtOutput,\n  descriptorMap: DescriptorMap\n): DescriptorWithIndex | DescriptorWithoutIndex | undefined {\n  const derivationPaths = getDerivationPaths(output);\n  return (\n    findDescriptorWithoutDerivation(script, descriptorMap) ??\n    (derivationPaths === undefined\n      ? undefined\n      : findDescriptorForAnyDerivationPath(script, derivationPaths, descriptorMap))\n  );\n}\n"]}Выполнить команду
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