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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());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Contact = void 0;
const dns_1 = require("dns");
const net_1 = require("net");
function dnsLookup(hostname) {
return __awaiter(this, void 0, void 0, function* () {
return new Promise((resolve, reject) => {
// console.log('dnsLookup', hostname);
(0, dns_1.lookup)(hostname, { all: true }, (err, addresses) => {
// console.log('addresses', hostname, addresses);
if (err) {
reject(err);
}
else if (addresses === undefined) {
reject(new Error('No addresses found (undefined)'));
}
else if (addresses.length === 0) {
reject(new Error('No addresses found (len 0)'));
}
else {
resolve(addresses[0].address);
}
});
});
});
}
class Contact {
constructor() {
this.address = null;
this.port = null;
this.is_valid = false;
}
static parse(raw) {
const contact = new Contact();
let items;
if (raw.includes('[') && raw.includes(']')) {
items = raw.split(']');
items = [
items[0].slice(1),
items[1].slice(1),
];
}
else {
items = raw.split(':');
}
if (items.length === 1) {
contact.address = items[0];
contact.port = null;
}
else if (items.length === 2) {
contact.address = items[0];
if (items[1] === '') {
contact.port = null;
}
else {
contact.port = parseInt(items[1]);
}
}
else if (items.length > 2) {
// IPv6 address with port
contact.address = items.slice(0, items.length - 1).join(':');
contact.port = parseInt(items[items.length - 1]);
}
if (contact.address === '') {
contact.address = 'private';
}
return contact;
}
static resolve(raw, raddr = null) {
return __awaiter(this, void 0, void 0, function* () {
const contact = this.parse(raw);
if (contact.address === 'public') {
contact.address = raddr;
}
else if (contact.address === 'private') {
contact.address = null;
contact.port = null;
}
else if (contact.address !== null) {
if ((0, net_1.isIPv4)(contact.address)) {
// Addr is IPv4 address, we can use it directly.
if (contact.address.slice(0, 4) === '127.') {
contact.address = null;
}
}
else if ((0, net_1.isIPv6)(contact.address)) {
// Addr is IPv6 address, we can use it directly.
if (contact.address == '::' || contact.address == '::1') {
contact.address = null;
}
}
else {
// Addr is host, we have to resolve it.
try {
const address = yield dnsLookup(contact.address);
if ((0, net_1.isIPv4)(address)) {
if (address.slice(0, 4) === '127.' || address == '::1') {
contact.address = null;
}
}
}
catch (error) {
contact.address = null;
}
}
}
else {
contact.address = null;
}
contact.is_valid = contact.address !== null && contact.port !== null;
return contact;
});
}
}
exports.Contact = Contact;
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