eth-janus/build/services/onetimekey-generator-service.js

Indirection service

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    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) : new P(function (resolve) { resolve(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 };
    }
};
Object.defineProperty(exports, "__esModule", { value: true });
var utils_1 = require("../services/utils");
var ethers = require("ethers");
var bitcore = require("bitcore-lib");
var utils = new utils_1.Utils();
var walletObject = ethers.Wallet;
var addressIndex = -1;
var OnetimeKeyGeneratorService = /** @class */ (function () {
    function OnetimeKeyGeneratorService(mnemonic, storageProvider) {
        this.mnemonics = mnemonic;
        this.walletCache = storageProvider;
    }
    OnetimeKeyGeneratorService.prototype.getOnetimeKey = function (txnRef, networkId) {
        return __awaiter(this, void 0, void 0, function () {
            var onetimeKeyData;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.createOrGetOnetimeKeyFromStorage(txnRef, networkId, true)];
                    case 1:
                        onetimeKeyData = _a.sent();
                        if (onetimeKeyData)
                            return [2 /*return*/, { networkId: onetimeKeyData.networkId, address: onetimeKeyData.onetimeAddress, publicKey: onetimeKeyData.onetimePublicKey }];
                        return [2 /*return*/, null];
                }
            });
        });
    };
    OnetimeKeyGeneratorService.prototype.signTransaction = function (txnRef, networkId, txn, web3) {
        return __awaiter(this, void 0, void 0, function () {
            var signedTx, txnObj, keyData, wallet, _a, _b, pKey;
            return __generator(this, function (_c) {
                switch (_c.label) {
                    case 0: return [4 /*yield*/, this.createOrGetOnetimeKeyFromStorage(txnRef, networkId, false)];
                    case 1:
                        keyData = _c.sent();
                        if (!(keyData && txn)) return [3 /*break*/, 3];
                        wallet = walletObject.fromMnemonic(this.mnemonics, keyData.derivedPath);
                        txn["from"] = wallet.address;
                        _a = txn;
                        _b = "nonce";
                        return [4 /*yield*/, web3.eth.getTransactionCount(wallet.address)];
                    case 2:
                        _a[_b] = _c.sent();
                        console.log("Tx before signing:", txn);
                        txnObj = utils.buildTransaction(txn);
                        pKey = Buffer.from(wallet.privateKey.slice(2), 'hex');
                        txnObj.sign(pKey);
                        //console.log("txnObj",txnObj);
                        signedTx = '0x' + txnObj.serialize().toString('hex');
                        _c.label = 3;
                    case 3: return [2 /*return*/, { signedTx: signedTx, signedTxObj: txnObj, rawTx: txn }];
                }
            });
        });
    };
    OnetimeKeyGeneratorService.prototype.signMessage = function (txnRef, networkId, message) {
        return __awaiter(this, void 0, void 0, function () {
            var signature, keyData, wallet;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.createOrGetOnetimeKeyFromStorage(txnRef, networkId, false)];
                    case 1:
                        keyData = _a.sent();
                        if (keyData) {
                            wallet = walletObject.fromMnemonic(this.mnemonics, keyData.derivedPath);
                            signature = wallet.signMessage(message);
                        }
                        return [2 /*return*/, signature];
                }
            });
        });
    };
    OnetimeKeyGeneratorService.prototype.createOrGetOnetimeKeyFromStorage = function (txnRef, networkId, canCreate) {
        return __awaiter(this, void 0, void 0, function () {
            var result, walletPath, wallet, bitcorePublicKey;
            return __generator(this, function (_a) {
                switch (_a.label) {
                    case 0: return [4 /*yield*/, this.walletCache.readOnetimeKeyPath(txnRef, networkId)];
                    case 1:
                        result = _a.sent();
                        if (!(!result && canCreate)) return [3 /*break*/, 3];
                        walletPath = this.getNextAddressPath();
                        wallet = walletObject.fromMnemonic(this.mnemonics, walletPath);
                        bitcorePublicKey = this.bitcorePublicKey(wallet.privateKey);
                        return [4 /*yield*/, this.walletCache.storeOnetimeKeyPath(txnRef, networkId, wallet.address, bitcorePublicKey, walletPath)];
                    case 2:
                        _a.sent();
                        //console.log({networkId: networkId, address: wallet.address, publicKey: bitcorePublicKey, privateKey: wallet.privateKey});
                        result = { txnRef: txnRef, networkId: networkId, onetimeAddress: wallet.address, onetimePublicKey: bitcorePublicKey, derivedPath: walletPath };
                        _a.label = 3;
                    case 3: return [2 /*return*/, result];
                }
            });
        });
    };
    /**
     * gets the wallet address path using the next index in the sequence
     */
    OnetimeKeyGeneratorService.prototype.getNextAddressPath = function () {
        //Increment the address index
        addressIndex = addressIndex + 1;
        //return the wallet path to the new index
        return "m/44'/60'/0'/0/" + addressIndex;
    };
    OnetimeKeyGeneratorService.prototype.bitcorePublicKey = function (privateKey) {
        var privKey = new bitcore.PrivateKey(privateKey.slice(2));
        var pubKey = new bitcore.PublicKey.fromPrivateKey(privKey);
        return pubKey.toString();
    };
    return OnetimeKeyGeneratorService;
}());
exports.OnetimeKeyGeneratorService = OnetimeKeyGeneratorService;
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