ctjs/build/LogV2.js

CTjs is a full set of classes necessary to work with any kind of Certificate Transparency log (V1 as from RFC6962, or V2 as from RFC6962-bis). In CTjs you could find all necessary validation/verification functions for all related data shipped with full-fe

"use strict";

Object.defineProperty(exports, "__esModule", {
	value: true
});

var _asn1js = require("asn1js");

var asn1js = _interopRequireWildcard(_asn1js);

var _pvutils = require("pvutils");

var _bytestreamjs = require("bytestreamjs");

var _pkijs = require("pkijs");

var _TransItem = require("./TransItem.js");

var _TransItem2 = _interopRequireDefault(_TransItem);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } }

function _asyncToGenerator(fn) { return function () { var gen = fn.apply(this, arguments); return new Promise(function (resolve, reject) { function step(key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { return Promise.resolve(value).then(function (value) { step("next", value); }, function (err) { step("throw", err); }); } } return step("next"); }); }; } /* eslint-disable no-useless-escape */


//**************************************************************************************
class LogV2 {
	//**********************************************************************************
	/**
  * Constructor for LogV2 class
  * @param {Object} [parameters={}]
  * @property {Object} [schema] asn1js parsed value
  */
	constructor(parameters = {}) {
		//region Internal properties of the object
		/**
   * @type {Function}
   * @description fetch
   */
		this.fetch = (0, _pvutils.getParametersValue)(parameters, "fetch", LogV2.constants("fetch"));
		/**
   * @type {Function}
   * @description encode
   */
		this.encode = (0, _pvutils.getParametersValue)(parameters, "encode", LogV2.constants("encode"));

		/**
   * @type {String}
   * @description url
   */
		this.url = (0, _pvutils.getParametersValue)(parameters, "url", LogV2.constants("url"));
		/**
   * @type {String}
   * @description hashAlgorithm
   */
		this.hashAlgorithm = (0, _pvutils.getParametersValue)(parameters, "hashAlgorithm", LogV2.constants("hashAlgorithm"));
		/**
   * @type {String}
   * @description signatureAlgorithm
   */
		this.signatureAlgorithm = (0, _pvutils.getParametersValue)(parameters, "signatureAlgorithm", LogV2.constants("signatureAlgorithm"));

		if ("key" in parameters) {
			const asn1 = asn1js.fromBER((0, _pvutils.stringToArrayBuffer)((0, _pvutils.fromBase64)(parameters.key)));
			if (asn1.offset !== -1) {
				/**
     * @type {PublicKeyInfo}
     * @description key
     */
				this.key = new _pkijs.PublicKeyInfo({ schema: asn1.result });
			}
		}

		if ("log_id" in parameters) {
			/**
    * @type {String}
    * @description logID
    */
			this.logID = (0, _pvutils.getParametersValue)(parameters, "log_id", LogV2.constants("logID"));
		}

		if ("maximum_merge_delay" in parameters) {
			/**
    * @type {Number}
    * @description maximumMergeDelay
    */
			this.maximumMergeDelay = (0, _pvutils.getParametersValue)(parameters, "maximum_merge_delay", LogV2.constants("maximumMergeDelay"));
		}

		if ("final_sth" in parameters) {
			this.finalSTH = {
				treeSize: parameters.final_sth.tree_size,
				timestamp: new Date(parameters.final_sth.timestamp),
				rootHash: (0, _pvutils.stringToArrayBuffer)((0, _pvutils.fromBase64)(parameters.final_sth.sha256_root_hash)),
				signature: new _TransItem2.default({
					stream: new _bytestreamjs.SeqStream({
						buffer: (0, _pvutils.stringToArrayBuffer)((0, _pvutils.fromBase64)(parameters.final_sth.tree_head_signature))
					})
				})
			};
		}
		//endregion
	}
	//**********************************************************************************
	/**
  * Return value for a constant by name
  * @param {string} name String name for a constant
  */
	static constants(name) {
		switch (name) {
			case "fetch":
				return _asyncToGenerator(function* () {
					return Promise.reject("Uninitialized fetch function for LogV2 class");
				});
			case "encode":
				return () => {
					throw new Error("Uninitialized encode function for LogV2 class");
				};
			case "url":
				return "";
			case "hashAlgorithm":
				return "SHA-256";
			case "signatureAlgorithm":
				return "ECDSA";
			case "logID":
				return "";
			case "maximumMergeDelay":
				return 0;
			default:
				throw new Error(`Invalid constant name for LogV2 class: ${name}`);
		}
	}
	//**********************************************************************************
	set url(value) {
		if (value === "") return;

		const match = value.match(/(?:http[s]?:\/\/)?([^?\/s]+.*)/);
		if (match === null) throw new Error("Base URL for LogV2 class must be set to a correct value");

		this._url = `https://${match[1].replace(/\/*$/g, "")}/ct/v2`;
	}
	//**********************************************************************************\
	get url() {
		return this._url;
	}
	//**********************************************************************************
	/**
  * Implement call to "get-sth" Certificate Transparency Log API
  * @return {Promise<SignedTreeHead>} Latest Signed Tree Head
  */
	get_sth() {
		var _this = this;

		return _asyncToGenerator(function* () {
			const api = "get-sth";

			const json = yield _this.fetch(`${_this.url}/${api}`).then(function (result) {
				if (result.ok) return result.json();

				return Promise.reject(`ERROR while fetching ${api}: ${result.statusText}`);
			});

			return json;
		})();
	}
	//**********************************************************************************
}
exports.default = LogV2; //**************************************************************************************
//# sourceMappingURL=LogV2.js.map