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Текущая директория: /opt/BitGoJS/modules/utxo-lib/dist/src/bitgo
Просмотр файла: nonStandardHalfSigned.js

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.padInputScript = padInputScript;
const assert = require("assert");
const opcodes = require("bitcoin-ops");
const __1 = require("../");
/**
 * @param input - Input of non-standard half-signed transaction created with `tx.build()` instead of `tx.buildIncomplete()`.
 * @param signatureIndex - Position to map the existing signatures to. Other signatures will be padded with OP_0.
 */
function padInputScript(input, signatureIndex) {
    if (![0, 1, 2].includes(signatureIndex)) {
        /* istanbul ignore next */
        throw new Error(`invalid signature index: must be one of [0, 1, 2]`);
    }
    let decompiledSigScript;
    if (input.witness && input.witness.length > 0) {
        decompiledSigScript = input.witness;
    }
    else {
        decompiledSigScript = __1.script.decompile(input.script);
    }
    // The shape of a non-standard half-signed input is
    //   OP_0 <signature> <p2ms>
    if (!decompiledSigScript || decompiledSigScript.length !== 3) {
        /* istanbul ignore next */
        return;
    }
    const [op0, signatureBuffer, sigScript] = decompiledSigScript;
    if (op0 !== opcodes.OP_0 && !(Buffer.isBuffer(op0) && op0.length === 0)) {
        /* istanbul ignore next */
        return;
    }
    if (!Buffer.isBuffer(sigScript)) {
        /* istanbul ignore next */
        return;
    }
    if (__1.classify.output(sigScript) !== __1.classify.types.P2MS) {
        /* istanbul ignore next */
        return;
    }
    const paddedSigScript = [
        op0,
        ...[0, 1, 2].map((i) => (i === signatureIndex ? signatureBuffer : Buffer.from([]))),
        sigScript,
    ];
    if (input.witness.length) {
        paddedSigScript.forEach((b) => assert(Buffer.isBuffer(b)));
        input.witness = paddedSigScript;
    }
    else {
        input.script = __1.script.compile(paddedSigScript);
    }
}
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