crypto-dns
Version:
This packages translates domain names into crypto wallet addresses, using standard TXT records set by the DNS.
171 lines • 9.17 kB
JavaScript
;
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
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;
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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 };
}
};
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.lookupOne = exports.lookupMany = exports.lookup = void 0;
var axios_1 = __importDefault(require("axios"));
var defaultConfig = { nameserver: 'https://1.1.1.1/dns-query', timeout: 2000 }; // Google DNS: https://8.8.8.8/resolve
var lookup = function (domain, config) {
if (config === void 0) { config = defaultConfig; }
return __awaiter(void 0, void 0, void 0, function () {
var mergedConfig, result, dnsResponse, error_1;
var _a, _b;
return __generator(this, function (_c) {
switch (_c.label) {
case 0:
mergedConfig = __assign(__assign({}, defaultConfig), config);
result = [];
_c.label = 1;
case 1:
_c.trys.push([1, 3, , 4]);
return [4 /*yield*/, axios_1.default.get(mergedConfig.nameserver, {
headers: { accept: 'application/dns-json' },
params: { name: domain, type: 'TXT' },
//params: { name: domain, type: 'TXT', do: true, cd: false },
timeout: mergedConfig.timeout,
})];
case 2:
dnsResponse = _c.sent();
return [3 /*break*/, 4];
case 3:
error_1 = _c.sent();
throw new Error("Network error :".concat(error_1.message));
case 4:
if (((_a = dnsResponse === null || dnsResponse === void 0 ? void 0 : dnsResponse.data) === null || _a === void 0 ? void 0 : _a.Status) === undefined || ((_b = dnsResponse === null || dnsResponse === void 0 ? void 0 : dnsResponse.data) === null || _b === void 0 ? void 0 : _b.Answer) === undefined) {
throw new Error('Unplausible DoH response');
}
else if (dnsResponse.data.Status != 0) {
throw new Error('Failed DoH response');
}
else if (dnsResponse.data.AD !== true || dnsResponse.data.CD !== false) {
throw new Error('Failed DNSSEC validation');
}
dnsResponse.data.Answer.forEach(function (entry) {
var _a, _b, _c, _d;
if (entry.type !== 16) {
return;
}
// Remove " if entry.data is wrapped like "crypto:1:10 matic:0xXYZ"
if (entry.data.startsWith('"') && entry.data.endsWith('"')) {
entry.data = entry.data.slice(1, -1);
}
var dnsEntry = entry.data.match(/^crypto:(?<formatVersion>\d):(?<priority>\d{1,3})\s(?<currency>\w+):(?<walletAddress>.*)/);
if (!dnsEntry) {
return;
}
result.push({
version: Number((_a = dnsEntry.groups) === null || _a === void 0 ? void 0 : _a.formatVersion),
priority: Number((_b = dnsEntry.groups) === null || _b === void 0 ? void 0 : _b.priority),
currency: ((_c = dnsEntry.groups) === null || _c === void 0 ? void 0 : _c.currency.toUpperCase()) || '',
address: ((_d = dnsEntry.groups) === null || _d === void 0 ? void 0 : _d.walletAddress) || '',
});
});
return [2 /*return*/, result];
}
});
});
};
exports.lookup = lookup;
var lookupMany = function (domain, currency, config) {
if (config === void 0) { config = defaultConfig; }
return __awaiter(void 0, void 0, void 0, function () {
var result;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, (0, exports.lookup)(domain, config)];
case 1:
result = _a.sent();
return [2 /*return*/, (result
// Filter addresses for one currency
.filter(function (element) {
return element.currency === currency.toUpperCase();
})
// Sort addresses by priority
.sort(function (a, b) {
return a.priority - b.priority ? 1 : b.priority - a.priority ? -1 : 0;
}))];
}
});
});
};
exports.lookupMany = lookupMany;
var lookupOne = function (domain, currency, config) {
if (config === void 0) { config = defaultConfig; }
return __awaiter(void 0, void 0, void 0, function () {
var lookupResult, highestPrio;
return __generator(this, function (_a) {
switch (_a.label) {
case 0: return [4 /*yield*/, (0, exports.lookupMany)(domain, currency, config)];
case 1:
lookupResult = _a.sent();
// Return null if no address has been received
if (!lookupResult.length) {
return [2 /*return*/, null];
}
highestPrio = lookupResult[0].priority;
// Filter for highest priority
lookupResult = lookupResult.filter(function (element) {
return element.priority === highestPrio;
});
// If multiple addresses are set, select one random address
return [2 /*return*/, lookupResult[Math.floor(Math.random() * lookupResult.length)].address];
}
});
});
};
exports.lookupOne = lookupOne;
//const main = async () => {
// console.log(await lookup('thirdweb.de'));
// console.log(await lookupMany('thirdweb.de', 'eth'));
// console.log(await lookupOne('thirdweb.de', 'eth'));
//};
//main();
//# sourceMappingURL=index.js.map