@cruxpay/js-sdk/lib/packages/utils.js

CruxPay Javascript SDK

var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    return new (P || (P = Promise))(function (resolve, reject) {
        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
import * as bitcoin from "bitcoinjs-lib";
import * as cloner from "cloner";
import URL from "url-parse";
import { BaseError, ErrorHelper, PackageErrorCode } from "./error";
import { getLogger } from "./logger";
var log = getLogger(__filename);
var httpsPrefixRegex = new RegExp("^https://.+$");
/* istanbul ignore next */
var httpJSONRequest = function (options) {
    log.debug("network_call:", options);
    var promise = new Promise(function (resolve, reject) {
        var _a = translateRequestOptionsToFetchOptions(options), url = _a.url, fetchOptions = _a.fetchOptions;
        if (!httpsPrefixRegex.test(url)) {
            throw ErrorHelper.getPackageError(null, PackageErrorCode.InsecureNetworkCall);
        }
        fetch(url, fetchOptions)
            .then(function (res) {
            if (res.status === 404) {
                reject(ErrorHelper.getPackageError(null, PackageErrorCode.Response404, url));
            }
            else if (res.status === 401) {
                reject(ErrorHelper.getPackageError(null, PackageErrorCode.Response401, url));
            }
            else {
                return res.json();
            }
        })
            .then(function (json) { return resolve(json); })
            .catch(function (err) { return reject(new BaseError(null, err)); });
    });
    return promise;
};
var translateRequestOptionsToFetchOptions = function (options) {
    var fetchOptions = Object.assign({}, options);
    delete fetchOptions.baseUrl;
    delete fetchOptions.url;
    var url = "";
    if (options.baseUrl) {
        url += options.baseUrl;
    }
    if (options.url) {
        url += options.url;
    }
    if (options.qs) {
        var str = [];
        for (var p in options.qs) {
            if (options.qs.hasOwnProperty(p)) {
                str.push(p + "=" + options.qs[p]);
            }
        }
        url += "?" + str.join("&");
    }
    if (options.body) {
        fetchOptions.body = JSON.stringify(options.body);
    }
    return { url: url, fetchOptions: fetchOptions };
};
var sanitizePrivKey = function (privKey) {
    if (privKey.length === 66 && privKey.slice(64) === "01") {
        privKey = privKey.slice(0, 64);
    }
    return privKey;
};
var sanitizeUrl = function (url) {
    var parsedUrl = new URL(url);
    // TODO: sanitize the pathname
    var restrictedCharacters = "!@#$^&%*()+=[]{}|:<>?,.";
    if (parsedUrl.pathname.split("").some(function (ch) { return restrictedCharacters.indexOf(ch) !== -1; })) {
        throw new BaseError(null, "Url path: " + parsedUrl.pathname + " contains invalid characters");
    }
    return "" + parsedUrl.origin + parsedUrl.pathname;
};
var trimTrailingSlash = function (value) {
    return value.replace(/\/$/, "");
};
var getRandomHexString = function (length) {
    if (length === void 0) { length = 32; }
    var randomValues = crypto.getRandomValues(new Uint8Array(length));
    var result = "";
    var i;
    for (i = 0; i < randomValues.length; i++) {
        result = result + (randomValues[i].toString(16).toUpperCase());
    }
    return result;
};
var cachedFunctionCall = function (storage, cacheKey, ttl, fn, paramArray, skipConditional) {
    if (ttl === void 0) { ttl = 300; }
    return __awaiter(void 0, void 0, void 0, function () {
        var storageCacheKey, cachedValue, cachedExpiry, _a, newValue, skipCache, _b, stringValue;
        return __generator(this, function (_c) {
            switch (_c.label) {
                case 0:
                    if (!storage) {
                        log.info("cacheStorage is missing, making a direct call");
                        return [2 /*return*/, fn.apply(fn, paramArray)];
                    }
                    storageCacheKey = "crux_cache_" + cacheKey;
                    return [4 /*yield*/, storage.getItem(storageCacheKey)];
                case 1:
                    cachedValue = _c.sent();
                    _a = Number;
                    return [4 /*yield*/, storage.getItem(storageCacheKey + ":exp")];
                case 2:
                    cachedExpiry = _a.apply(void 0, [_c.sent()]);
                    if (cachedValue && cachedExpiry && (new Date(cachedExpiry) > new Date())) {
                        log.debug("using cachedValue from storage for key " + storageCacheKey);
                        try {
                            return [2 /*return*/, JSON.parse(cachedValue)];
                        }
                        catch (error) {
                            return [2 /*return*/, cachedValue];
                        }
                    }
                    return [4 /*yield*/, fn.apply(fn, paramArray)];
                case 3:
                    newValue = _c.sent();
                    _b = skipConditional;
                    if (!_b) return [3 /*break*/, 5];
                    return [4 /*yield*/, skipConditional(newValue)];
                case 4:
                    _b = (_c.sent());
                    _c.label = 5;
                case 5:
                    skipCache = _b || false;
                    if (!(newValue && !skipCache)) return [3 /*break*/, 8];
                    stringValue = typeof newValue === "string" ? newValue : JSON.stringify(newValue);
                    return [4 /*yield*/, storage.setItem(storageCacheKey, stringValue)];
                case 6:
                    _c.sent();
                    return [4 /*yield*/, storage.setItem(storageCacheKey + ":exp", ((ttl * 1000) + Date.now()).toString())];
                case 7:
                    _c.sent();
                    _c.label = 8;
                case 8: return [2 /*return*/, newValue];
            }
        });
    });
};
var cloneValue = function (obj) {
    return cloner.deep.copy(obj);
};
var getKeyPairFromPrivKey = function (privKey) {
    var privateKey;
    // Convert the WIF format to hex
    if (privKey.startsWith("L") || privKey.startsWith("K")) {
        var keyPair = bitcoin.ECPair.fromWIF(privKey);
        if (keyPair.privateKey) {
            privateKey = sanitizePrivKey((keyPair.privateKey).toString("hex"));
        }
        else {
            throw new BaseError(null, "Missing private key in generated EC Pair");
        }
    }
    else {
        privateKey = sanitizePrivKey(privKey);
    }
    // Try with hex encoding first, then with base64
    var publicKey;
    try {
        publicKey = bitcoin.ECPair.fromPrivateKey(Buffer.from(privateKey, "hex")).publicKey.toString("hex");
    }
    catch (error) {
        privateKey = sanitizePrivKey(Buffer.from(privKey, "base64").toString("hex"));
        try {
            publicKey = bitcoin.ECPair.fromPrivateKey(Buffer.from(privateKey, "hex")).publicKey.toString("hex");
        }
        catch (error) {
            throw ErrorHelper.getPackageError(error, PackageErrorCode.InvalidPrivateKeyFormat);
        }
    }
    var address = bitcoin.payments.p2pkh({ pubkey: Buffer.from(publicKey, "hex") }).address;
    if (!address) {
        throw new BaseError(null, "No address found corresponding this public key");
    }
    return {
        address: address,
        privKey: privateKey,
        pubKey: publicKey,
    };
};
export { httpJSONRequest, sanitizePrivKey, sanitizeUrl, cachedFunctionCall, getKeyPairFromPrivKey, getRandomHexString, cloneValue, trimTrailingSlash, };