bgoldjs-lib-bit/src/templates/scripthash/input.js

Client-side Bitcoin Gold JavaScript library

'use strict';
// <scriptSig> {serialized scriptPubKey script}
Object.defineProperty(exports, '__esModule', { value: true });
const bscript = require('../../script');
const p2ms = require('../multisig');
const p2pk = require('../pubkey');
const p2pkh = require('../pubkeyhash');
const p2wpkho = require('../witnesspubkeyhash/output');
const p2wsho = require('../witnessscripthash/output');
function check(script, allowIncomplete) {
  const chunks = bscript.decompile(script);
  if (chunks.length < 1) return false;
  const lastChunk = chunks[chunks.length - 1];
  if (!Buffer.isBuffer(lastChunk)) return false;
  const scriptSigChunks = bscript.decompile(
    bscript.compile(chunks.slice(0, -1)),
  );
  const redeemScriptChunks = bscript.decompile(lastChunk);
  // is redeemScript a valid script?
  if (!redeemScriptChunks) return false;
  // is redeemScriptSig push only?
  if (!bscript.isPushOnly(scriptSigChunks)) return false;
  // is witness?
  if (chunks.length === 1) {
    return (
      p2wsho.check(redeemScriptChunks) || p2wpkho.check(redeemScriptChunks)
    );
  }
  // match types
  if (
    p2pkh.input.check(scriptSigChunks) &&
    p2pkh.output.check(redeemScriptChunks)
  )
    return true;
  if (
    p2ms.input.check(scriptSigChunks, allowIncomplete) &&
    p2ms.output.check(redeemScriptChunks)
  )
    return true;
  if (
    p2pk.input.check(scriptSigChunks) &&
    p2pk.output.check(redeemScriptChunks)
  )
    return true;
  return false;
}
exports.check = check;
check.toJSON = () => {
  return 'scriptHash input';
};