@bitgo-beta/utxo-lib
Version:
Client-side Bitcoin JavaScript library
147 lines • 15 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.toOutputScriptWithFormat = exports.fromOutputScriptWithFormat = exports.toOutputScriptFromCashAddress = exports.fromOutputScriptToCashAddress = exports.getPrefix = void 0;
/**
* Wrapper around `cashaddress` library.
*
* Performs some address sanitation:
* - add prefix if missing
* - normalize to lower-case
* - reject mixed-case
*
* Based on these documents
*
* - https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/cashaddr.md
* - https://www.bitcoinabc.org/cashaddr/
*/
const cashaddress = require("cashaddress");
const bitcoinjs = require("bitcoinjs-lib");
const networks_1 = require("../../networks");
/**
* @param name
* @param output
* @return the encoded pubkeyhash or scripthash
*/
function getHashFromOutputScript(name, output) {
const func = bitcoinjs.payments[name];
if (!func) {
throw new Error(`no payment with name ${name}`);
}
try {
return func({ output }).hash;
}
catch (e) {
return undefined;
}
}
/**
* @param network
* @return network-specific cashaddr prefix
*/
function getPrefix(network) {
switch (network) {
case networks_1.networks.bitcoincash:
return 'bitcoincash';
case networks_1.networks.bitcoincashTestnet:
return 'bchtest';
default:
throw new Error(`unsupported prefix for ${networks_1.getNetworkName(network)}`);
}
}
exports.getPrefix = getPrefix;
/**
* @param outputScript
* @param network
* @return outputScript encoded as cashaddr (prefixed, lowercase)
*/
function fromOutputScriptToCashAddress(outputScript, network) {
if (!networks_1.isBitcoinCash(network)) {
throw new Error(`invalid network`);
}
for (const [paymentName, scriptType] of [
['p2pkh', 'pubkeyhash'],
['p2sh', 'scripthash'],
]) {
const hash = getHashFromOutputScript(paymentName, outputScript);
if (hash) {
return cashaddress.encode(getPrefix(network), scriptType, hash);
}
}
throw new Error(`could not determine hash for outputScript`);
}
exports.fromOutputScriptToCashAddress = fromOutputScriptToCashAddress;
/**
* @param address - Accepts addresses with and without prefix. Accepts all-lowercase and all-uppercase addresses. Rejects mixed-case addresses.
* @param network
* @return decoded output script
*/
function toOutputScriptFromCashAddress(address, network) {
if (!networks_1.isBitcoinCash(network)) {
throw new Error(`invalid network`);
}
if (address === address.toUpperCase()) {
address = address.toLowerCase();
}
if (address !== address.toLowerCase()) {
throw new Error(`mixed-case addresses not allowed`);
}
if (!address.startsWith(getPrefix(network) + ':')) {
address = `${getPrefix(network)}:${address}`;
}
const decoded = cashaddress.decode(address);
let outputScript;
switch (decoded.version) {
case 'scripthash':
outputScript = bitcoinjs.payments.p2sh({ hash: decoded.hash }).output;
break;
case 'pubkeyhash':
outputScript = bitcoinjs.payments.p2pkh({ hash: decoded.hash }).output;
break;
default:
throw new Error(`unknown version ${decoded.version}`);
}
if (!outputScript) {
throw new Error(`could not determine output script`);
}
return outputScript;
}
exports.toOutputScriptFromCashAddress = toOutputScriptFromCashAddress;
/**
* @param outputScript
* @param format
* @param network
* @return address in specified format
*/
function fromOutputScriptWithFormat(outputScript, format, network) {
if (!networks_1.isBitcoinCash(network)) {
throw new Error(`invalid network`);
}
if (format === 'cashaddr') {
return fromOutputScriptToCashAddress(outputScript, network);
}
if (format === 'default') {
return bitcoinjs.address.fromOutputScript(outputScript, network);
}
throw new Error(`invalid format`);
}
exports.fromOutputScriptWithFormat = fromOutputScriptWithFormat;
/**
* @param address
* @param format
* @param network
* @return output script from address in specified format
*/
function toOutputScriptWithFormat(address, format, network) {
if (!networks_1.isBitcoinCash(network)) {
throw new Error(`invalid network`);
}
if (format === 'cashaddr') {
return toOutputScriptFromCashAddress(address, network);
}
if (format === 'default') {
return bitcoinjs.address.toOutputScript(address, network);
}
throw new Error(`invalid format`);
}
exports.toOutputScriptWithFormat = toOutputScriptWithFormat;
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add prefix if missing\n * - normalize to lower-case\n * - reject mixed-case\n *\n * Based on these documents\n *\n * - https://github.com/bitcoincashorg/bitcoincash.org/blob/master/spec/cashaddr.md\n * - https://www.bitcoinabc.org/cashaddr/\n */\nimport * as cashaddress from 'cashaddress';\nimport * as bitcoinjs from 'bitcoinjs-lib';\nimport { getNetworkName, isBitcoinCash, Network, networks } from '../../networks';\nimport { AddressFormat } from '../../addressFormat';\n\n/**\n * @param name\n * @param output\n * @return the encoded pubkeyhash or scripthash\n */\nfunction getHashFromOutputScript(name: string, output: Buffer): Buffer | undefined {\n  type PaymentFunc = ({ output }: { output: Buffer }) => bitcoinjs.Payment;\n  const func = (bitcoinjs.payments as Record<string, PaymentFunc>)[name];\n  if (!func) {\n    throw new Error(`no payment with name ${name}`);\n  }\n  try {\n    return func({ output }).hash;\n  } catch (e) {\n    return undefined;\n  }\n}\n\n/**\n * @param network\n * @return network-specific cashaddr prefix\n */\nexport function getPrefix(network: Network): string {\n  switch (network) {\n    case networks.bitcoincash:\n      return 'bitcoincash';\n    case networks.bitcoincashTestnet:\n      return 'bchtest';\n    default:\n      throw new Error(`unsupported prefix for ${getNetworkName(network)}`);\n  }\n}\n\n/**\n * @param outputScript\n * @param network\n * @return outputScript encoded as cashaddr (prefixed, lowercase)\n */\nexport function fromOutputScriptToCashAddress(outputScript: Buffer, network: Network): string {\n  if (!isBitcoinCash(network)) {\n    throw new Error(`invalid network`);\n  }\n  for (const [paymentName, scriptType] of [\n    ['p2pkh', 'pubkeyhash'],\n    ['p2sh', 'scripthash'],\n  ]) {\n    const hash = getHashFromOutputScript(paymentName, outputScript);\n    if (hash) {\n      return cashaddress.encode(getPrefix(network), scriptType as cashaddress.ScriptType, hash);\n    }\n  }\n  throw new Error(`could not determine hash for outputScript`);\n}\n\n/**\n * @param address - Accepts addresses with and without prefix. Accepts all-lowercase and all-uppercase addresses. Rejects mixed-case addresses.\n * @param network\n * @return decoded output script\n */\nexport function toOutputScriptFromCashAddress(address: string, network: Network): Buffer {\n  if (!isBitcoinCash(network)) {\n    throw new Error(`invalid network`);\n  }\n  if (address === address.toUpperCase()) {\n    address = address.toLowerCase();\n  }\n  if (address !== address.toLowerCase()) {\n    throw new Error(`mixed-case addresses not allowed`);\n  }\n  if (!address.startsWith(getPrefix(network) + ':')) {\n    address = `${getPrefix(network)}:${address}`;\n  }\n  const decoded = cashaddress.decode(address);\n  let outputScript: Buffer | undefined;\n  switch (decoded.version) {\n    case 'scripthash':\n      outputScript = bitcoinjs.payments.p2sh({ hash: decoded.hash }).output;\n      break;\n    case 'pubkeyhash':\n      outputScript = bitcoinjs.payments.p2pkh({ hash: decoded.hash }).output;\n      break;\n    default:\n      throw new Error(`unknown version ${decoded.version}`);\n  }\n  if (!outputScript) {\n    throw new Error(`could not determine output script`);\n  }\n  return outputScript;\n}\n\n/**\n * @param outputScript\n * @param format\n * @param network\n * @return address in specified format\n */\nexport function fromOutputScriptWithFormat(outputScript: Buffer, format: AddressFormat, network: Network): string {\n  if (!isBitcoinCash(network)) {\n    throw new Error(`invalid network`);\n  }\n\n  if (format === 'cashaddr') {\n    return fromOutputScriptToCashAddress(outputScript, network);\n  }\n\n  if (format === 'default') {\n    return bitcoinjs.address.fromOutputScript(outputScript, network as bitcoinjs.Network);\n  }\n\n  throw new Error(`invalid format`);\n}\n\n/**\n * @param address\n * @param format\n * @param network\n * @return output script from address in specified format\n */\nexport function toOutputScriptWithFormat(address: string, format: AddressFormat, network: Network): Buffer {\n  if (!isBitcoinCash(network)) {\n    throw new Error(`invalid network`);\n  }\n\n  if (format === 'cashaddr') {\n    return toOutputScriptFromCashAddress(address, network);\n  }\n\n  if (format === 'default') {\n    return bitcoinjs.address.toOutputScript(address, network as bitcoinjs.Network);\n  }\n\n  throw new Error(`invalid format`);\n}\n"]}