mirror of
https://github.com/maeneko/forgetting.git
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maeneko
44c637f7af
Protocol generation is now derived from awg1.conf rather than stored: an interface speaks 3.1 when HeaderProtectionKey is set and 2.0 otherwise. The 3.0/3.1-only keys (HeaderProtectionKey, ContentPaddingAddition, the Rekey/Reject/Keepalive timers, MaxHandshakeAttempts, RandomTrailers, DisableCookies) are read from the conf and emitted only when non-empty, so 2.0 output stays byte-identical — verified by diffing both the client .conf and the full vpn:// string against the previous implementation. Changing generation invalidates every issued vpn:// key, so add POST /api/users/reissue. It recovers the client private key from inside the stored blob (the only place it exists), keeping ip/pub_key/psk_key intact, so nothing changes on the wire and users only need to re-import. users gains key_gen and vpn_key_prev, and users.db is snapshotted before the pass. install.sh gates 3.1 on module 3.x and kernel >= 5.5 (header protection needs the chacha library API, absent before 5.5) and falls back to writing a 2.0 conf instead of aborting, so older kernels keep working as before. HeaderProtectionKey is generated with awg genpsk and preserved on KEEP_DATA. The panel marks keys issued on a different generation and offers to reissue them; /api/v1 now returns gen alongside name/ip/vpn_key. Also add MIT license headers across the awg-ui sources.
775 lines
31 KiB
TypeScript
775 lines
31 KiB
TypeScript
// Copyright (c) 2026 Ivan Vasilev
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// This source code is licensed under the MIT license found in the
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// LICENSE file in the root directory of this source tree.
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import fs, { readFileSync, writeFileSync, existsSync, mkdirSync } from "fs";
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import path from "path";
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import crypto from "crypto";
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import { execSync, spawnSync } from "child_process";
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import * as zlib from "zlib";
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import express, { Request, Response, NextFunction } from "express";
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import Database from "better-sqlite3";
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import winston from "winston";
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const logsDir = path.join(process.cwd(), "logs");
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if (!existsSync(logsDir)) mkdirSync(logsDir, { recursive: true });
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const logger = winston.createLogger({
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level: "debug",
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transports: [
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new winston.transports.Console({
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format: winston.format.combine(
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winston.format.timestamp(),
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winston.format.colorize(),
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winston.format.printf(({ timestamp, level, message }) =>
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`${timestamp} ${level}: ${message}`
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),
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),
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}),
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new winston.transports.File({
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filename: path.join(logsDir, "app.log"),
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format: winston.format.combine(
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winston.format.timestamp(),
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winston.format.json(),
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),
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}),
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],
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});
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const INTERNAL_AUTH_PUB_FILE = process.env.INTERNAL_AUTH_PUB_FILE
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?? "/etc/amnezia/amneziawg/internal_auth_public.key";
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let internalAuthPubKey: crypto.KeyObject;
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try {
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internalAuthPubKey = crypto.createPublicKey(readFileSync(INTERNAL_AUTH_PUB_FILE));
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} catch {
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logger.error("FATAL: публичный ключ внутренней авторизации не найден: " + INTERNAL_AUTH_PUB_FILE);
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process.exit(1);
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}
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const SERVER = {
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port: Number(process.env.PORT) || 3005,
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};
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const dbPath = path.join("/etc/amnezia/amneziawg", "users.db");
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const db = new Database(dbPath);
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db.exec(`
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CREATE TABLE IF NOT EXISTS users (
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name TEXT PRIMARY KEY,
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ip TEXT NOT NULL UNIQUE,
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pub_key TEXT NOT NULL,
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vpn_key TEXT NOT NULL,
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psk_key TEXT NOT NULL DEFAULT ''
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)
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`);
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db.exec("CREATE UNIQUE INDEX IF NOT EXISTS idx_users_ip ON users (ip)");
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// Миграции users: better-sqlite3 синхронный, ALTER TABLE идемпотентным не бывает,
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// поэтому смотрим фактический список колонок.
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// key_gen — поколение протокола, на параметрах которого выдан vpn_key
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// ('2' для всего, что заведено до появления 3.1)
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// vpn_key_prev — предыдущий блоб, чтобы перевыпуск можно было откатить
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{
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const cols = new Set(
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(db.prepare("PRAGMA table_info(users)").all() as { name: string }[]).map(c => c.name),
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);
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if (!cols.has("key_gen"))
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db.exec("ALTER TABLE users ADD COLUMN key_gen TEXT NOT NULL DEFAULT '2'");
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if (!cols.has("vpn_key_prev"))
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db.exec("ALTER TABLE users ADD COLUMN vpn_key_prev TEXT NOT NULL DEFAULT ''");
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}
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db.exec(`
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CREATE TABLE IF NOT EXISTS config (
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key TEXT PRIMARY KEY,
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value TEXT NOT NULL
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)
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`);
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const cfgStmts = {
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get: db.prepare<[string], { value: string }>("SELECT value FROM config WHERE key = ?"),
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set: db.prepare<[string, string]>("INSERT OR REPLACE INTO config (key, value) VALUES (?, ?)"),
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};
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function getCfg(key: string, fallback: string): string {
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return cfgStmts.get.get(key)?.value ?? fallback;
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}
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function setCfg(key: string, value: string) {
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cfgStmts.set.run(key, value);
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}
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function getLocalIp(): string {
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const route = spawnSync("ip", ["route", "show", "default"]);
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const iface = route.stdout.toString().match(/dev\s+(\S+)/)?.[1];
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if (!iface) return "";
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const addr = spawnSync("ip", ["addr", "show", iface]);
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return addr.stdout.toString().match(/inet\s+([\d.]+)/)?.[1] ?? "";
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}
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function initConfig() {
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const serverIp = getCfg("serverIp", process.env.SERVER_IP ?? getLocalIp());
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const serverPort = getCfg("serverPort", process.env.SERVER_PORT ?? "51820");
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const serverName = getCfg("serverName", process.env.SERVER_NAME ?? "VPN");
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if (!serverIp) throw new Error("SERVER_IP не задан — передай через env при первом запуске");
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setCfg("serverIp", serverIp);
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setCfg("serverPort", serverPort);
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setCfg("serverName", serverName);
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return { serverIp, serverPort: Number(serverPort), serverName };
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}
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// Ключи, появившиеся в AmneziaWG 3.0/3.1. Пустая строка = ключ не задан, тогда
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// интерфейс работает в режиме 2.0 и его нет ни в conf, ни в vpn:// ключе.
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// Порядок массива = порядок строк в клиентском .conf (см. buildClientConf).
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const AWG3_KEYS = [
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"HeaderProtectionKey",
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"ContentPaddingAddition",
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"RekeyAfterTime",
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"RekeyTimeout",
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"RejectAfterTime",
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"KeepaliveTimeout",
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"MaxHandshakeAttempts",
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"RandomTrailers",
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"DisableCookies",
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] as const;
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type Awg3Key = (typeof AWG3_KEYS)[number];
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type AwgParams = {
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Jc: number; Jmin: number; Jmax: number;
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S1: number; S2: number; S3: number; S4: number;
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H1: string; H2: string; H3: string; H4: string;
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I1: string; I2: string; I3: string; I4: string; I5: string;
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} & Record<Awg3Key, string>;
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const DEFAULT_AWG_PARAMS: AwgParams = {
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Jc: 6, Jmin: 10, Jmax: 50,
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S1: 90, S2: 45, S3: 37, S4: 14,
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H1: "1224800044-2116730834",
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H2: "2122053282-2133204808",
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H3: "2133604274-2140756116",
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H4: "2143656228-2147444225",
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I1: "<r 2><b 0x858000010001000000000669636c6f756403636f6d0000010001c00c000100010000105a00044d583737>",
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I2: "", I3: "", I4: "", I5: "",
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// 3.x по умолчанию выключен: без conf-а сервер остаётся на 2.0.
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HeaderProtectionKey: "", ContentPaddingAddition: "",
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RekeyAfterTime: "", RekeyTimeout: "", RejectAfterTime: "",
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KeepaliveTimeout: "", MaxHandshakeAttempts: "",
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RandomTrailers: "", DisableCookies: "",
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};
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function readAwgParams(): AwgParams {
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const confFile = path.join("/etc/amnezia/amneziawg", "awg1.conf");
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const params: AwgParams = { ...DEFAULT_AWG_PARAMS };
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if (!existsSync(confFile)) {
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logger.warn("awg1.conf не найден — параметры обфускации по умолчанию");
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return params;
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}
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const iface = readFileSync(confFile, "utf8").split(/^\[Peer\]/m)[0];
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const numKeys: (keyof AwgParams)[] = ["Jc", "Jmin", "Jmax", "S1", "S2", "S3", "S4"];
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const strKeys: (keyof AwgParams)[] = [
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"H1", "H2", "H3", "H4", "I1", "I2", "I3", "I4", "I5", ...AWG3_KEYS,
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];
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for (const k of numKeys) {
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const m = iface.match(new RegExp(`^\\s*${k}\\s*=\\s*(\\d+)`, "m"));
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if (m) (params[k] as number) = Number(m[1]);
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}
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for (const k of strKeys) {
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const m = iface.match(new RegExp(`^\\s*${k}\\s*=\\s*(.*)$`, "m"));
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if (m) (params[k] as string) = m[1].trim();
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}
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logger.info("awg params loaded from conf", {
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Jc: params.Jc, H1: params.H1, gen: genOf(params),
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});
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return params;
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}
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// Поколение протокола выводим из самих параметров, отдельного флага нет: conf
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// остаётся единственным источником правды. Header protection — та фича, которая
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// ломает совместимость с 2.0, поэтому именно она и определяет поколение.
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function genOf(p: AwgParams): "2" | "3.1" {
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return p.HeaderProtectionKey ? "3.1" : "2";
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}
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// PersistentKeepalive в 3.1 задаётся диапазоном (дефолт клиента AmneziaVPN);
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// в 2.0 это одно число. Уходит и в серверные [Peer], и в клиентский конфиг.
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const KEEPALIVE_BY_GEN: Record<"2" | "3.1", string> = { "2": "25", "3.1": "25-35" };
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const runtimeConfig = initConfig();
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const AWG_PARAMS = readAwgParams();
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const AWG_GEN = genOf(AWG_PARAMS);
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const CONFIG = {
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interface: "awg1",
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confDir: "/etc/amnezia/amneziawg",
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subnet: "10.9",
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serverIp: runtimeConfig.serverIp,
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serverPort: runtimeConfig.serverPort,
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serverName: runtimeConfig.serverName,
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dns1: "1.1.1.1",
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dns2: "1.0.0.1",
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mtu: 1376,
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keepalive: KEEPALIVE_BY_GEN[AWG_GEN],
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awgParams: AWG_PARAMS,
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gen: AWG_GEN,
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};
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interface UserRow {
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name: string;
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ip: string;
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pub_key: string;
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vpn_key: string;
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psk_key: string;
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key_gen: string;
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vpn_key_prev: string;
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}
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const stmts = {
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get: db.prepare<[string], UserRow>("SELECT * FROM users WHERE name = ?"),
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all: db.prepare<[], UserRow>("SELECT * FROM users"),
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insert: db.prepare<[string, string, string, string, string, string]>("INSERT INTO users (name, ip, pub_key, vpn_key, psk_key, key_gen) VALUES (?, ?, ?, ?, ?, ?)"),
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delete: db.prepare<[string]>("DELETE FROM users WHERE name = ?"),
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ips: db.prepare<[], { ip: string }>("SELECT ip FROM users"),
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// Перевыпуск: старый блоб уезжает в vpn_key_prev, pub_key/psk_key могут
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// смениться, если исходный ключ не удалось разобрать.
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reissue: db.prepare<[string, string, string, string, string]>(
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"UPDATE users SET vpn_key_prev = vpn_key, vpn_key = ?, pub_key = ?, psk_key = ?, key_gen = ? WHERE name = ?",
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),
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};
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function run(cmd: string): string {
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return execSync(cmd, { encoding: "utf8" }).trim();
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}
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function generateKeys() {
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const privateKey = run("umask 077 && awg genkey");
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const r = spawnSync("awg", ["pubkey"], { input: privateKey, encoding: "utf8" });
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if (r.status !== 0) throw new Error("awg pubkey завершился с ошибкой");
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const publicKey = (r.stdout as string).trim();
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const presharedKey = run("awg genpsk");
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return { privateKey, publicKey, presharedKey };
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}
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function getServerPublicKey(): string {
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const f = path.join(CONFIG.confDir, "server_public.key");
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if (!existsSync(f)) throw new Error("server_public.key не найден");
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return readFileSync(f, "utf8").trim();
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}
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function nextIp(): string {
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const usedIps = new Set(stmts.ips.all().map((r: { ip: string }) => r.ip));
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for (let c = 0; c <= 255; c++)
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for (let d = 2; d <= 254; d++) {
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const ip = `${CONFIG.subnet}.${c}.${d}`;
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if (!usedIps.has(ip)) return ip;
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}
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throw new Error("Подсеть заполнена");
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}
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// Официальный формат .conf: PrivateKey → AWG params (Jc,S,H,I) → 3.x-ключи →
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// Address → DNS. Порядок 3.x-блока взят из client/server_scripts/awg/template.conf
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// клиента AmneziaVPN; пустые ключи не выводятся вовсе — тогда конфиг остаётся
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// ровно тем же 2.0-конфигом, что и до появления поддержки 3.1.
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// ВНИМАНИЕ: пустые I2–I5 должны выводиться как «I2 = » с ОДНИМ хвостовым пробелом
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// (так в рабочих ключах Amnezia). Пробел даётся через ${" "}, чтобы его не срезали
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// ни IDE (strip trailing whitespace), ни инструменты правки. Не «чистить»!
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function buildClientConf(
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keys: ReturnType<typeof generateKeys>,
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ip: string,
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serverPub: string,
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): string {
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const p = CONFIG.awgParams;
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const awg3 = AWG3_KEYS.filter(k => p[k]).map(k => `${k} = ${p[k]}\n`).join("");
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return `[Interface]
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PrivateKey = ${keys.privateKey}
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Jc = ${p.Jc}
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Jmin = ${p.Jmin}
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Jmax = ${p.Jmax}
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S1 = ${p.S1}
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S2 = ${p.S2}
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S3 = ${p.S3}
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S4 = ${p.S4}
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H1 = ${p.H1}
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H2 = ${p.H2}
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H3 = ${p.H3}
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H4 = ${p.H4}
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I1 = ${p.I1}
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I2 =${" "}
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I3 =${" "}
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I4 =${" "}
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I5 =${" "}
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${awg3}Address = ${ip}/32
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DNS = ${CONFIG.dns1}, ${CONFIG.dns2}
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[Peer]
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PublicKey = ${serverPub}
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PresharedKey = ${keys.presharedKey}
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AllowedIPs = 0.0.0.0/0, ::/0
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Endpoint = ${CONFIG.serverIp}:${CONFIG.serverPort}
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PersistentKeepalive = ${CONFIG.keepalive}
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`;
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}
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function encodeVpnKey(
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keys: ReturnType<typeof generateKeys>,
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ip: string,
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serverPub: string,
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): string {
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const p = CONFIG.awgParams;
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const clientConf = buildClientConf(keys, ip, serverPub);
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// Ключи в объектах идут в том же ASCII-алфавитном порядке, в каком их
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// сериализует QJsonObject клиента AmneziaVPN. Незаданные 3.x-ключи
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// выбрасываются в dropEmptyAwg3 — на 2.0 объекты остаются прежними байт-в-байт.
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const dropEmptyAwg3 = <T extends Record<string, unknown>>(o: T): T => {
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for (const k of AWG3_KEYS) if (!p[k]) delete o[k];
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return o;
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};
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const lastConfigObj = dropEmptyAwg3({
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ContentPaddingAddition: p.ContentPaddingAddition,
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DisableCookies: p.DisableCookies,
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H1: p.H1, H2: p.H2, H3: p.H3, H4: p.H4,
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HeaderProtectionKey: p.HeaderProtectionKey,
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I1: p.I1, I2: "", I3: "", I4: "", I5: "",
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Jc: String(p.Jc),
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Jmax: String(p.Jmax),
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Jmin: String(p.Jmin),
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KeepaliveTimeout: p.KeepaliveTimeout,
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MaxHandshakeAttempts: p.MaxHandshakeAttempts,
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RandomTrailers: p.RandomTrailers,
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RejectAfterTime: p.RejectAfterTime,
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RekeyAfterTime: p.RekeyAfterTime,
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RekeyTimeout: p.RekeyTimeout,
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S1: String(p.S1), S2: String(p.S2), S3: String(p.S3), S4: String(p.S4),
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allowed_ips: ["0.0.0.0/0", "::/0"],
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clientId: keys.publicKey,
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client_ip: ip,
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client_priv_key: keys.privateKey,
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client_pub_key: keys.publicKey,
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config: clientConf,
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hostName: CONFIG.serverIp,
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mtu: String(CONFIG.mtu),
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persistent_keep_alive: String(CONFIG.keepalive),
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port: CONFIG.serverPort,
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psk_key: keys.presharedKey,
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server_pub_key: serverPub,
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});
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const json = JSON.stringify({
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containers: [{
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container: "amnezia-awg2",
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awg: dropEmptyAwg3({
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ContentPaddingAddition: p.ContentPaddingAddition,
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DisableCookies: p.DisableCookies,
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H1: p.H1, H2: p.H2, H3: p.H3, H4: p.H4,
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HeaderProtectionKey: p.HeaderProtectionKey,
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I1: p.I1, I2: "", I3: "", I4: "", I5: "",
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Jc: String(p.Jc),
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Jmax: String(p.Jmax),
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Jmin: String(p.Jmin),
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KeepaliveTimeout: p.KeepaliveTimeout,
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MaxHandshakeAttempts: p.MaxHandshakeAttempts,
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RandomTrailers: p.RandomTrailers,
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RejectAfterTime: p.RejectAfterTime,
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RekeyAfterTime: p.RekeyAfterTime,
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RekeyTimeout: p.RekeyTimeout,
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S1: String(p.S1), S2: String(p.S2),
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S3: String(p.S3), S4: String(p.S4),
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last_config: JSON.stringify(lastConfigObj, null, 2),
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port: String(CONFIG.serverPort),
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protocol_version: CONFIG.gen,
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subnet_address: `${CONFIG.subnet}.0.0`,
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transport_proto: "udp",
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}),
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}],
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defaultContainer: "amnezia-awg2",
|
||
description: CONFIG.serverName,
|
||
dns1: CONFIG.dns1,
|
||
dns2: CONFIG.dns2,
|
||
hostName: CONFIG.serverIp,
|
||
nameOverriddenByUser: true,
|
||
});
|
||
|
||
const jsonBuf = Buffer.from(json, "utf8");
|
||
const compressed = zlib.deflateSync(jsonBuf);
|
||
const header = Buffer.alloc(4);
|
||
header.writeUInt32BE(jsonBuf.length, 0);
|
||
return "vpn://" + Buffer.concat([header, compressed])
|
||
.toString("base64url")
|
||
.replace(/=+$/, "");
|
||
}
|
||
|
||
// Обратная к encodeVpnKey: vpn:// → base64url → снять 4-байтовый BE-заголовок
|
||
// длины → inflate → JSON. Приватный ключ клиента больше нигде не хранится, поэтому
|
||
// это единственный способ перевыпустить ключ, не меняя личность пира.
|
||
function decodeVpnKey(vpnKey: string): any | null {
|
||
try {
|
||
const buf = Buffer.from(vpnKey.replace(/^vpn:\/\//, ""), "base64url");
|
||
if (buf.length <= 4) return null;
|
||
return JSON.parse(zlib.inflateSync(buf.subarray(4)).toString("utf8"));
|
||
} catch {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
function clientPrivKeyFrom(vpnKey: string): string | null {
|
||
const lastConfig = decodeVpnKey(vpnKey)?.containers?.[0]?.awg?.last_config;
|
||
if (typeof lastConfig !== "string") return null;
|
||
try {
|
||
const priv = JSON.parse(lastConfig).client_priv_key;
|
||
return typeof priv === "string" && priv ? priv : null;
|
||
} catch {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
interface ReissueResult { total: number; reissued: number; regenerated: string[]; backup: string }
|
||
|
||
// Перевыпуск всех vpn:// ключей на текущих параметрах интерфейса. Нужен после
|
||
// смены поколения (2.0 → 3.1): старые ключи собраны на старых параметрах и
|
||
// перестают работать. IP, pub_key и psk_key сохраняются — на проводе ничего не
|
||
// меняется, клиенту достаточно заново импортировать ключ.
|
||
function reissueAll(): ReissueResult {
|
||
const users = stmts.all.all();
|
||
const serverPub = getServerPublicKey();
|
||
const backup = `${dbPath}.bak-${new Date().toISOString().replace(/[:.]/g, "-")}`;
|
||
db.prepare("VACUUM INTO ?").run(backup);
|
||
logger.info("reissue: db backed up", { backup, users: users.length });
|
||
|
||
const regenerated: string[] = [];
|
||
let reissued = 0;
|
||
|
||
for (const u of users) {
|
||
const priv = clientPrivKeyFrom(u.vpn_key);
|
||
let keys: ReturnType<typeof generateKeys>;
|
||
|
||
if (priv) {
|
||
keys = { privateKey: priv, publicKey: u.pub_key, presharedKey: u.psk_key };
|
||
} else {
|
||
// Блоб не разобрался — личность пира восстановить неоткуда, выдаём новую.
|
||
logger.warn("reissue: vpn_key не декодируется, генерируем новую пару", { name: u.name });
|
||
keys = generateKeys();
|
||
spawnSync("awg", ["set", CONFIG.interface, "peer", u.pub_key, "remove"]);
|
||
const r = setPeer(keys.publicKey, keys.presharedKey, u.ip);
|
||
if (r.status !== 0) {
|
||
logger.error("reissue: awg set failed", { name: u.name, stderr: r.stderr?.toString() });
|
||
continue;
|
||
}
|
||
regenerated.push(u.name);
|
||
}
|
||
|
||
stmts.reissue.run(
|
||
encodeVpnKey(keys, u.ip, serverPub),
|
||
keys.publicKey, keys.presharedKey, CONFIG.gen, u.name,
|
||
);
|
||
reissued++;
|
||
}
|
||
|
||
syncPeers();
|
||
logger.info("reissue: done", { total: users.length, reissued, regenerated: regenerated.length });
|
||
return { total: users.length, reissued, regenerated, backup };
|
||
}
|
||
|
||
function getPeersData(): Record<string, { online: boolean; lastHandshake: number; rx: number; tx: number }> {
|
||
try {
|
||
const output = run(`awg show ${CONFIG.interface} dump`);
|
||
const result: Record<string, { online: boolean; lastHandshake: number; rx: number; tx: number }> = {};
|
||
const now = Math.floor(Date.now() / 1000);
|
||
const lines = output.split("\n");
|
||
for (let i = 1; i < lines.length; i++) {
|
||
const parts = lines[i].split("\t");
|
||
const pubKey = parts[0];
|
||
if (!pubKey) continue;
|
||
const lastHandshake = Number(parts[4]);
|
||
const rx = Number(parts[5]);
|
||
const tx = Number(parts[6]);
|
||
result[pubKey] = {
|
||
online: lastHandshake > 0 && (now - lastHandshake) < 180,
|
||
lastHandshake, rx, tx,
|
||
};
|
||
}
|
||
return result;
|
||
} catch (e) { logger.warn("getPeersData failed", { error: e }); return {}; }
|
||
}
|
||
|
||
function rebuildConf() {
|
||
const users = db.prepare("SELECT name, ip, pub_key, psk_key FROM users").all() as UserRow[];
|
||
const confFile = path.join(CONFIG.confDir, `${CONFIG.interface}.conf`);
|
||
if (!existsSync(confFile)) return;
|
||
|
||
const conf = readFileSync(confFile, "utf8");
|
||
const iface = conf.split(/^\[Peer\]/m)[0].trimEnd();
|
||
const peers = (users as any[]).map(u =>
|
||
`\n# ${u.name}\n[Peer]\nPublicKey = ${u.pub_key}\nPresharedKey = ${u.psk_key}\nAllowedIPs = ${u.ip}/32\nPersistentKeepalive = ${CONFIG.keepalive}`
|
||
).join("\n");
|
||
|
||
writeFileSync(confFile, iface + "\n" + peers + "\n");
|
||
logger.info("conf rebuilt", { peers: users.length });
|
||
}
|
||
|
||
const SERVER_PRIV_KEY_FILE = "/etc/amnezia/server_private.key";
|
||
|
||
const AWGQUICK_ONLY_KEY = /^\s*(Address|DNS|MTU|Table|PreUp|PostUp|PreDown|PostDown|SaveConfig)\s*=/i;
|
||
|
||
// Готовит «stripped»-конфиг для `awg syncconf`: берёт awg1.conf, выкидывает
|
||
// awg-quick-ключи и оставляет [Interface] (PrivateKey + Jc/S/H + ListenPort) и
|
||
// [Peer]-блоки.
|
||
// 🛑 КРИТИЧНО: [Interface] с PrivateKey ОБЯЗАН попасть в этот конфиг. Раньше
|
||
// syncPeers отдавал в syncconf только [Peer]-блоки — и AmneziaWG обнулял
|
||
// приватный ключ интерфейса и параметры обфускации, после чего сервер
|
||
// поднимался с public-key=(none) и ВСЕ клиенты отваливались.
|
||
// PrivateKey подставляем из server_private.key — это та же идентичность, что в
|
||
// server_public.key (его зашивают в vpn:// ключи клиентов) и в PostUp.
|
||
function buildSyncConf(): string {
|
||
const confFile = path.join(CONFIG.confDir, `${CONFIG.interface}.conf`);
|
||
const priv = readFileSync(SERVER_PRIV_KEY_FILE, "utf8").trim();
|
||
const out: string[] = [];
|
||
let privReplaced = false;
|
||
for (const line of readFileSync(confFile, "utf8").split("\n")) {
|
||
if (AWGQUICK_ONLY_KEY.test(line)) continue;
|
||
if (/^\s*PrivateKey\s*=/.test(line)) {
|
||
out.push(`PrivateKey = ${priv}`);
|
||
privReplaced = true;
|
||
continue;
|
||
}
|
||
out.push(line);
|
||
}
|
||
if (!privReplaced) {
|
||
const idx = out.findIndex(l => /^\s*\[Interface\]/.test(l));
|
||
if (idx >= 0) out.splice(idx + 1, 0, `PrivateKey = ${priv}`);
|
||
}
|
||
return out.join("\n");
|
||
}
|
||
|
||
function syncPeers() {
|
||
rebuildConf();
|
||
const tmpFile = `/tmp/awg_sync_${Date.now()}.conf`;
|
||
try {
|
||
writeFileSync(tmpFile, buildSyncConf(), { mode: 0o600 });
|
||
const r = spawnSync("awg", ["syncconf", CONFIG.interface, tmpFile]);
|
||
if (r.status !== 0) logger.warn("syncPeers syncconf failed", { stderr: r.stderr?.toString() });
|
||
} finally {
|
||
try { fs.unlinkSync(tmpFile); } catch {}
|
||
}
|
||
const n = (db.prepare("SELECT COUNT(*) AS n FROM users").get() as { n: number }).n;
|
||
logger.info("peers synced", { count: n });
|
||
}
|
||
|
||
function getInterfaceStatus(): { up: boolean; peers: number; publicKey: string | null } {
|
||
const r = spawnSync("awg", ["show", CONFIG.interface]);
|
||
if (r.status !== 0) return { up: false, peers: 0, publicKey: null };
|
||
const output = r.stdout.toString();
|
||
const peers = (output.match(/^peer:/gm) ?? []).length;
|
||
const publicKey = output.match(/public key:\s*(.+)/)?.[1]?.trim() ?? null;
|
||
return { up: true, peers, publicKey };
|
||
}
|
||
|
||
function ensureInterfaceUp() {
|
||
const { up } = getInterfaceStatus();
|
||
if (!up) throw new Error(`Interface ${CONFIG.interface} is not up. Run: awg-quick up ${CONFIG.interface}`);
|
||
}
|
||
|
||
function restartAwg() {
|
||
logger.info("AWG restart: down");
|
||
const down = spawnSync("awg-quick", ["down", CONFIG.interface]);
|
||
if (down.status !== 0) logger.warn("awg-quick down failed", { stderr: down.stderr?.toString() });
|
||
logger.info("AWG restart: up");
|
||
const up = spawnSync("awg-quick", ["up", CONFIG.interface]);
|
||
if (up.status !== 0) throw new Error(`awg-quick up failed: ${up.stderr?.toString()}`);
|
||
syncPeers();
|
||
logger.info("AWG restart: done");
|
||
}
|
||
|
||
function startInterface() {
|
||
const status = getInterfaceStatus();
|
||
if (status.up) { logger.info("AWG already up", { peers: status.peers }); return status; }
|
||
const r = spawnSync("awg-quick", ["up", CONFIG.interface]);
|
||
if (r.status !== 0) throw new Error(`awg-quick up failed: ${r.stderr?.toString()}`);
|
||
syncPeers();
|
||
return getInterfaceStatus();
|
||
}
|
||
|
||
// PSK уходит во временный файл, а не в аргументы: иначе он виден в /proc/<pid>/cmdline.
|
||
function setPeer(pubKey: string, psk: string, ip: string) {
|
||
const tmpPsk = `/tmp/awg_psk_${Date.now()}.tmp`;
|
||
writeFileSync(tmpPsk, psk, { mode: 0o600 });
|
||
try {
|
||
return spawnSync("awg", [
|
||
"set", CONFIG.interface, "peer", pubKey,
|
||
"preshared-key", tmpPsk,
|
||
"allowed-ips", `${ip}/32`,
|
||
"persistent-keepalive", CONFIG.keepalive,
|
||
]);
|
||
} finally {
|
||
try { fs.unlinkSync(tmpPsk); } catch {}
|
||
}
|
||
}
|
||
|
||
function addUser(username: string): UserRow {
|
||
const keys = generateKeys();
|
||
const serverPub = getServerPublicKey();
|
||
|
||
const ip = db.transaction(() => {
|
||
const ip = nextIp();
|
||
stmts.insert.run(username, ip, keys.publicKey, "", keys.presharedKey, CONFIG.gen);
|
||
return ip;
|
||
})();
|
||
|
||
const vpn_key = encodeVpnKey(keys, ip, serverPub);
|
||
db.prepare("UPDATE users SET vpn_key = ? WHERE name = ?").run(vpn_key, username);
|
||
|
||
const r = setPeer(keys.publicKey, keys.presharedKey, ip);
|
||
if (r.status !== 0) {
|
||
stmts.delete.run(username);
|
||
throw new Error(`awg set failed: ${r.stderr?.toString()}`);
|
||
}
|
||
|
||
rebuildConf();
|
||
logger.info("user created", { name: username, ip, gen: CONFIG.gen });
|
||
return {
|
||
name: username, ip, pub_key: keys.publicKey, vpn_key,
|
||
psk_key: keys.presharedKey, key_gen: CONFIG.gen, vpn_key_prev: "",
|
||
};
|
||
}
|
||
|
||
function removeUser(username: string) {
|
||
const user = stmts.get.get(username);
|
||
if (!user) throw new Error("Пользователь не найден");
|
||
|
||
stmts.delete.run(username);
|
||
spawnSync("awg", ["set", CONFIG.interface, "peer", user.pub_key, "remove"]);
|
||
rebuildConf();
|
||
|
||
for (const ext of [".conf", ".key"]) {
|
||
const f = path.join(CONFIG.confDir, "clients", username + ext);
|
||
if (existsSync(f)) fs.unlinkSync(f);
|
||
}
|
||
logger.info("user removed", { name: username });
|
||
}
|
||
|
||
const app = express();
|
||
app.use(express.json({ limit: "1kb" }));
|
||
|
||
function verifyInternalToken(token: string): boolean {
|
||
try {
|
||
const [h, p, s] = token.split(".");
|
||
if (!h || !p || !s) return false;
|
||
const ok = crypto.verify(null, Buffer.from(`${h}.${p}`), internalAuthPubKey, Buffer.from(s, "base64url"));
|
||
if (!ok) return false;
|
||
const { exp } = JSON.parse(Buffer.from(p, "base64url").toString()) as { exp: number };
|
||
return exp > Math.floor(Date.now() / 1000);
|
||
} catch { return false; }
|
||
}
|
||
|
||
function auth(req: Request, res: Response, next: NextFunction) {
|
||
const header = (req.headers["authorization"] ?? "") as string;
|
||
const token = header.startsWith("Bearer ") ? header.slice(7) : "";
|
||
if (!token || !verifyInternalToken(token)) {
|
||
res.status(401).json({ error: "Неверная авторизация" }); return;
|
||
}
|
||
next();
|
||
}
|
||
|
||
function validateName(req: Request, res: Response, next: NextFunction) {
|
||
const name = req.params.name ?? (req.body as { name?: string }).name;
|
||
if (!name || !/^[a-zA-Z0-9_-]{1,32}$/.test(name)) {
|
||
res.status(400).json({ error: "Имя: буквы, цифры, _ и -, до 32 символов" }); return;
|
||
}
|
||
next();
|
||
}
|
||
|
||
function handler(fn: (req: Request, res: Response) => void | Promise<void>) {
|
||
return async (req: Request, res: Response) => {
|
||
try { await fn(req, res); }
|
||
catch (e) { logger.error("handler error", { error: e }); res.status(500).json({ error: "Internal server error" }); }
|
||
};
|
||
}
|
||
|
||
app.get("/health", (_req, res) => {
|
||
const { up, peers } = getInterfaceStatus();
|
||
res.status(up ? 200 : 503).json({
|
||
status: up ? "ok" : "degraded",
|
||
server: CONFIG.serverName,
|
||
ip: CONFIG.serverIp,
|
||
gen: CONFIG.gen,
|
||
awg: { status: up ? "ok" : "down", peers },
|
||
});
|
||
});
|
||
|
||
app.post("/api/users", auth, validateName, handler((req, res) => {
|
||
const { name } = req.body as { name: string };
|
||
if (stmts.get.get(name)) {
|
||
res.status(409).json({ error: "Пользователь уже существует" }); return;
|
||
}
|
||
res.status(201).json(addUser(name));
|
||
}));
|
||
|
||
app.get("/api/users", auth, handler((_req, res) => {
|
||
const users = db.prepare("SELECT name, ip, pub_key, vpn_key, key_gen FROM users WHERE vpn_key != ''").all() as UserRow[];
|
||
const peers = getPeersData();
|
||
res.json({
|
||
users: users.map(u => ({
|
||
...u,
|
||
online: peers[u.pub_key]?.online ?? false,
|
||
lastHandshake: peers[u.pub_key]?.lastHandshake ?? 0,
|
||
})),
|
||
});
|
||
}));
|
||
|
||
app.get("/api/users/stats", auth, handler((_req, res) => {
|
||
const users = db.prepare("SELECT name, ip, pub_key, key_gen FROM users WHERE vpn_key != ''").all() as UserRow[];
|
||
const peers = getPeersData();
|
||
res.json({
|
||
users: users.map(u => ({
|
||
name: u.name,
|
||
ip: u.ip,
|
||
key_gen: u.key_gen,
|
||
online: peers[u.pub_key]?.online ?? false,
|
||
lastHandshake: peers[u.pub_key]?.lastHandshake ?? 0,
|
||
rx: peers[u.pub_key]?.rx ?? 0,
|
||
tx: peers[u.pub_key]?.tx ?? 0,
|
||
})),
|
||
});
|
||
}));
|
||
|
||
// ⚠️ Должен быть объявлен ДО «/api/users/:name», иначе тот перехватит «reissue»
|
||
// как имя пользователя.
|
||
app.post("/api/users/reissue", auth, handler((_req, res) => {
|
||
res.json(reissueAll());
|
||
}));
|
||
|
||
app.post("/api/users/:name", auth, validateName, handler((req, res) => {
|
||
const user = stmts.get.get(req.params.name);
|
||
if (!user) { res.status(404).json({ error: "Пользователь не найден" }); return; }
|
||
res.json(user);
|
||
}));
|
||
|
||
app.delete("/api/users/:name", auth, validateName, handler((req, res) => {
|
||
removeUser(req.params.name);
|
||
res.json({ success: true, name: req.params.name });
|
||
}));
|
||
|
||
app.post("/awg/restart", auth, handler((_req, res) => {
|
||
restartAwg();
|
||
res.json({ success: true });
|
||
}));
|
||
|
||
app.get("/awg/status", auth, handler((_req, res) => {
|
||
res.json(getInterfaceStatus());
|
||
}));
|
||
|
||
app.post("/awg/start", auth, handler((_req, res) => {
|
||
res.json(startInterface());
|
||
}));
|
||
|
||
app.listen(SERVER.port, "127.0.0.1", () => {
|
||
logger.info("Server started", { port: SERVER.port, host: "127.0.0.1", serverName: CONFIG.serverName, serverIp: CONFIG.serverIp });
|
||
});
|
||
ensureInterfaceUp();
|
||
syncPeers();
|