Add period-based license keys alongside fixed expiry dates.

New keys default to validDays with countdown starting on first activation; existing expiresAtSec keys behave unchanged.

Co-authored-by: Cursor <cursoragent@cursor.com>

README.md

@@ -65,7 +65,10 @@ npm test
 - `POST /v1/admin/revoke` — `Authorization: Bearer <LICENSE_ADMIN_TOKEN>`, тело `{ "key": "TTRPG-..." }` (один продуктовый ключ) или `{ "sub": "..." }` (все ключи с этим sub, legacy).
 - `POST /v1/admin/issue` — админская выдача (`sub`, `pid`, `iat`, `exp`, `did`).
 - `GET /v1/admin/licenses` — список продуктовых ключей с активациями и флагом `revoked`.
-- `POST /v1/admin/product-keys` — создание нового продуктового ключа (`pid`, `maxDevices`, `expiresAtSec`, опционально `key`, `sub`).
+- `POST /v1/admin/product-keys` — создание нового продуктового ключа (`pid`, `maxDevices`, опционально `key`, `sub`).
+  - **По умолчанию** — period-лицензия: `validDays: 365` (отсчёт с первой активации).
+  - **Fixed** (фиксированная дата): явно передайте `expiresAtSec` (unix-секунды).
+  - Нельзя указывать `expiresAtSec` и `validDays` одновременно.
 - `GET /health` — `{ ok: true }`.
 
 ## Клиент

data.example.json

@@ -6,6 +6,13 @@
       "pid": "dnd_player",
       "maxDevices": 3,
       "expiresAtSec": 1893456000
+    },
+    {
+      "key": "TTRPG-DEMO-PERIOD-KEY",
+      "sub": "lic_demo_period",
+      "pid": "dnd_player",
+      "maxDevices": 3,
+      "validDays": 365
     }
   ],
   "revokedSubs": [],

lib/licenseLogic.mjs

@@ -0,0 +1,97 @@
+export const DEFAULT_VALID_DAYS = 365;
+export const SECONDS_PER_DAY = 86400;
+
+export function isPeriodKey(pk) {
+  return pk.validDays != null && pk.validDays > 0;
+}
+
+export function isFixedKey(pk) {
+  return pk.expiresAtSec != null && Number.isFinite(pk.expiresAtSec) && !isPeriodKey(pk);
+}
+
+/** @returns {{ ok: true, expiresAtSec?: number, validDays?: number } | { ok: false, error: string }} */
+export function parseProductKeyExpiry(body, nowSec = Math.floor(Date.now() / 1000)) {
+  const hasExpiresAtSec = body.expiresAtSec != null && body.expiresAtSec !== '';
+  const hasValidDays = body.validDays != null && body.validDays !== '';
+
+  if (hasExpiresAtSec && hasValidDays) {
+    return { ok: false, error: 'conflicting_expiry' };
+  }
+
+  if (hasExpiresAtSec) {
+    const expiresAtSec = Number(body.expiresAtSec);
+    if (!Number.isFinite(expiresAtSec) || expiresAtSec <= 0) {
+      return { ok: false, error: 'invalid_expiresAtSec' };
+    }
+    return { ok: true, expiresAtSec };
+  }
+
+  if (hasValidDays) {
+    const validDays = Number(body.validDays);
+    if (!Number.isInteger(validDays) || validDays < 1) {
+      return { ok: false, error: 'invalid_validDays' };
+    }
+    return { ok: true, validDays };
+  }
+
+  return { ok: true, validDays: DEFAULT_VALID_DAYS };
+}
+
+export function getExpiryMode(pk) {
+  return isPeriodKey(pk) ? 'period' : 'fixed';
+}
+
+export function getEffectiveExpSec(pk) {
+  if (isFixedKey(pk)) return pk.expiresAtSec;
+  if (isPeriodKey(pk) && pk.licenseExpSec != null) return pk.licenseExpSec;
+  return null;
+}
+
+/**
+ * On first activation of a period key, sets activatedAtSec and licenseExpSec on pk.
+ * @returns {{ changed: boolean, exp: number }}
+ */
+export function ensurePeriodActivated(pk, nowSec) {
+  if (isFixedKey(pk)) {
+    return { changed: false, exp: pk.expiresAtSec };
+  }
+
+  if (!isPeriodKey(pk)) {
+    throw new Error('invalid_product_key_expiry');
+  }
+
+  if (pk.licenseExpSec != null && pk.activatedAtSec != null) {
+    return { changed: false, exp: pk.licenseExpSec };
+  }
+
+  pk.activatedAtSec = nowSec;
+  pk.licenseExpSec = nowSec + pk.validDays * SECONDS_PER_DAY;
+  return { changed: true, exp: pk.licenseExpSec };
+}
+
+export function resolveTokenExp(pk, nowSec) {
+  if (isFixedKey(pk)) return pk.expiresAtSec;
+  if (isPeriodKey(pk)) {
+    if (pk.licenseExpSec != null) return pk.licenseExpSec;
+    return nowSec + pk.validDays * SECONDS_PER_DAY;
+  }
+  throw new Error('invalid_product_key_expiry');
+}
+
+export function enrichLicenseEntry(pk, devices, revoked) {
+  return {
+    key: pk.key,
+    sub: pk.sub,
+    pid: pk.pid,
+    maxDevices: pk.maxDevices,
+    expiryMode: getExpiryMode(pk),
+    expiresAtSec: pk.expiresAtSec ?? null,
+    validDays: pk.validDays ?? null,
+    activatedAtSec: pk.activatedAtSec ?? null,
+    licenseExpSec: pk.licenseExpSec ?? null,
+    effectiveExpSec: getEffectiveExpSec(pk),
+    revoked,
+    activatedDevices: devices,
+    activatedCount: devices.length,
+  };
+}

src/server.mjs

@@ -4,6 +4,12 @@ import http from 'node:http';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
 
+import {
+  enrichLicenseEntry,
+  ensurePeriodActivated,
+  parseProductKeyExpiry,
+  resolveTokenExp,
+} from '../lib/licenseLogic.mjs';
 import { signPayload } from '../lib/signPayload.mjs';
 
 const __dirname = path.dirname(fileURLToPath(import.meta.url));
@@ -104,19 +110,37 @@ export function createServer(options = {}) {
         if (!already && list.length >= pk.maxDevices) {
           return json(res, 403, { error: 'too_many_devices' });
         }
+        const now = Math.floor(Date.now() / 1000);
+        let dataChanged = false;
+
+        try {
+          const period = ensurePeriodActivated(pk, now);
+          if (period.changed) dataChanged = true;
+        } catch {
+          return json(res, 403, { error: 'license_misconfigured' });
+        }
+
         if (!already) {
           list.push(deviceId);
           data.activations[pk.sub] = list;
-          writeData(data);
+          dataChanged = true;
+        }
+
+        if (dataChanged) writeData(data);
+
+        let exp;
+        try {
+          exp = resolveTokenExp(pk, now);
+        } catch {
+          return json(res, 403, { error: 'license_misconfigured' });
         }
 
-        const now = Math.floor(Date.now() / 1000);
         const payload = {
           v: 1,
           sub: pk.sub,
           pid: pk.pid,
           iat: now,
-          exp: pk.expiresAtSec,
+          exp,
           did: deviceId,
         };
         const token = signPayload(payload, privateKeyPem);
@@ -131,16 +155,8 @@ export function createServer(options = {}) {
         const activations = data.activations ?? {};
         const licenses = (data.productKeys ?? []).map((pk) => {
           const devices = activations[pk.sub] ?? [];
-          return {
-            key: pk.key,
-            sub: pk.sub,
-            pid: pk.pid,
-            maxDevices: pk.maxDevices,
-            expiresAtSec: pk.expiresAtSec,
-            revoked: revokedKeysList.includes(pk.key) || revokedSubsList.includes(pk.sub),
-            activatedDevices: devices,
-            activatedCount: devices.length,
-          };
+          const revoked = revokedKeysList.includes(pk.key) || revokedSubsList.includes(pk.sub);
+          return enrichLicenseEntry(pk, devices, revoked);
         });
         return json(res, 200, { licenses });
       }
@@ -149,13 +165,17 @@ export function createServer(options = {}) {
         if (!checkAdmin(req, adminToken)) return json(res, 401, { error: 'unauthorized' });
         const raw = await readBody(req);
         const body = JSON.parse(raw || '{}');
-        const now = Math.floor(Date.now() / 1000);
+        const expiry = parseProductKeyExpiry(body);
+        if (!expiry.ok) return json(res, 400, { error: expiry.error });
+
         const entry = {
           key: body.key ?? generateProductKey(),
           sub: body.sub ?? generateSub(),
           pid: body.pid ?? 'dnd_player',
           maxDevices: body.maxDevices ?? 3,
-          expiresAtSec: body.expiresAtSec ?? now + 86400 * 365,
+          ...(expiry.expiresAtSec != null
+            ? { expiresAtSec: expiry.expiresAtSec }
+            : { validDays: expiry.validDays }),
         };
         if (!entry.key || !entry.sub) return json(res, 400, { error: 'invalid_entry' });
         const data = readData();

test/activate.test.mjs

@@ -0,0 +1,199 @@
+import assert from 'node:assert/strict';
+import fs from 'node:fs';
+import http from 'node:http';
+import os from 'node:os';
+import path from 'node:path';
+import test from 'node:test';
+import { fileURLToPath } from 'node:url';
+
+import { generateKeyPairSync } from 'node:crypto';
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const SECONDS_PER_DAY = 86400;
+
+function listen(server) {
+  return new Promise((resolve) => {
+    server.listen(0, '127.0.0.1', () => {
+      resolve(server.address().port);
+    });
+  });
+}
+
+function request(port, method, pathname, { body } = {}) {
+  return new Promise((resolve, reject) => {
+    const headers = { 'Content-Type': 'application/json' };
+    const req = http.request(
+      { hostname: '127.0.0.1', port, method, path: pathname, headers },
+      (res) => {
+        const chunks = [];
+        res.on('data', (c) => chunks.push(c));
+        res.on('end', () => {
+          const raw = Buffer.concat(chunks).toString('utf8');
+          resolve({ status: res.statusCode, body: raw ? JSON.parse(raw) : null });
+        });
+      },
+    );
+    req.on('error', reject);
+    if (body) req.write(JSON.stringify(body));
+    req.end();
+  });
+}
+
+async function makeServer(dataPath) {
+  process.env.SKIP_LICENSE_LISTEN = '1';
+  const { createServer } = await import('../src/server.mjs');
+  const { privateKey } = generateKeyPairSync('ed25519');
+  const pem = privateKey.export({ type: 'pkcs8', format: 'pem' });
+  process.env.DND_LICENSE_DATA_PATH = dataPath;
+  return createServer({ privateKeyPem: pem, adminToken: 'test-admin' });
+}
+
+function writeData(dataPath, productKeys, activations = {}) {
+  fs.writeFileSync(
+    dataPath,
+    JSON.stringify({
+      productKeys,
+      revokedSubs: [],
+      revokedKeys: [],
+      activations,
+    }),
+  );
+}
+
+function tokenPayload(token) {
+  return JSON.parse(Buffer.from(token.split('.')[0], 'base64url').toString('utf8'));
+}
+
+void test('POST /v1/activate fixed key sets exp from expiresAtSec', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  writeData(dataPath, [
+    {
+      key: 'TTRPG-FIXED',
+      sub: 'lic_fixed',
+      pid: 'dnd_player',
+      maxDevices: 2,
+      expiresAtSec: 1893456000,
+    },
+  ]);
+
+  const server = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const res = await request(port, 'POST', '/v1/activate', {
+      body: { productKey: 'TTRPG-FIXED', deviceId: 'dev-a' },
+    });
+    assert.equal(res.status, 200);
+    assert.equal(tokenPayload(res.body.token).exp, 1893456000);
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+void test('POST /v1/activate period key starts countdown on first activation', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  writeData(dataPath, [
+    {
+      key: 'TTRPG-PERIOD',
+      sub: 'lic_period',
+      pid: 'dnd_player',
+      maxDevices: 2,
+      validDays: 30,
+    },
+  ]);
+
+  const server = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const before = Math.floor(Date.now() / 1000);
+    const res = await request(port, 'POST', '/v1/activate', {
+      body: { productKey: 'TTRPG-PERIOD', deviceId: 'dev-a' },
+    });
+    const after = Math.floor(Date.now() / 1000);
+    assert.equal(res.status, 200);
+
+    const payload = tokenPayload(res.body.token);
+    assert.ok(payload.exp >= before + 30 * SECONDS_PER_DAY);
+    assert.ok(payload.exp <= after + 30 * SECONDS_PER_DAY);
+
+    const data = JSON.parse(fs.readFileSync(dataPath, 'utf8'));
+    const pk = data.productKeys[0];
+    assert.ok(pk.activatedAtSec >= before);
+    assert.equal(pk.licenseExpSec, payload.exp);
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+void test('POST /v1/activate period key re-activation keeps same exp', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  const licenseExpSec = 1700000000 + 365 * SECONDS_PER_DAY;
+  writeData(
+    dataPath,
+    [
+      {
+        key: 'TTRPG-PERIOD',
+        sub: 'lic_period',
+        pid: 'dnd_player',
+        maxDevices: 2,
+        validDays: 365,
+        activatedAtSec: 1700000000,
+        licenseExpSec,
+      },
+    ],
+    { lic_period: ['dev-a'] },
+  );
+
+  const server = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const res = await request(port, 'POST', '/v1/activate', {
+      body: { productKey: 'TTRPG-PERIOD', deviceId: 'dev-a' },
+    });
+    assert.equal(res.status, 200);
+    assert.equal(tokenPayload(res.body.token).exp, licenseExpSec);
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+void test('POST /v1/activate period key second device shares license exp', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  const licenseExpSec = 1700000000 + 90 * SECONDS_PER_DAY;
+  writeData(
+    dataPath,
+    [
+      {
+        key: 'TTRPG-PERIOD',
+        sub: 'lic_period',
+        pid: 'dnd_player',
+        maxDevices: 2,
+        validDays: 90,
+        activatedAtSec: 1700000000,
+        licenseExpSec,
+      },
+    ],
+    { lic_period: ['dev-a'] },
+  );
+
+  const server = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const res = await request(port, 'POST', '/v1/activate', {
+      body: { productKey: 'TTRPG-PERIOD', deviceId: 'dev-b' },
+    });
+    assert.equal(res.status, 200);
+    const payload = tokenPayload(res.body.token);
+    assert.equal(payload.exp, licenseExpSec);
+    assert.equal(payload.did, 'dev-b');
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});

test/adminApi.test.mjs

@@ -77,6 +77,8 @@ void test('GET /v1/admin/licenses returns enriched product keys', async () => {
     assert.equal(res.status, 200);
     assert.equal(res.body.licenses.length, 1);
     assert.equal(res.body.licenses[0].key, 'TTRPG-TEST-KEY');
+    assert.equal(res.body.licenses[0].expiryMode, 'fixed');
+    assert.equal(res.body.licenses[0].expiresAtSec, 1893456000);
     assert.equal(res.body.licenses[0].revoked, true);
     assert.deepEqual(res.body.licenses[0].activatedDevices, ['dev1', 'dev2']);
     assert.equal(res.body.licenses[0].activatedCount, 2);
@@ -105,7 +107,7 @@ void test('POST /v1/admin/product-keys creates a new product key', async () => {
     assert.equal(res.body.expiresAtSec, 2000000000);
 
     const data = JSON.parse(fs.readFileSync(dataPath, 'utf8'));
-    assert.equal(data.productKeys.length, 2);
+    assert.equal(data.productKeys.length, 3);
     assert.ok(data.productKeys.some((x) => x.key === res.body.key));
   } finally {
     server.close();
@@ -113,6 +115,52 @@ void test('POST /v1/admin/product-keys creates a new product key', async () => {
   }
 });
 
+void test('POST /v1/admin/product-keys defaults to validDays period', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  fs.copyFileSync(path.join(root, 'data.example.json'), dataPath);
+
+  const { server, adminToken } = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const res = await request(port, 'POST', '/v1/admin/product-keys', {
+      token: adminToken,
+      body: { maxDevices: 3, pid: 'dnd_player' },
+    });
+    assert.equal(res.status, 201);
+    assert.equal(res.body.validDays, 365);
+    assert.equal(res.body.expiresAtSec, undefined);
+
+    const data = JSON.parse(fs.readFileSync(dataPath, 'utf8'));
+    const created = data.productKeys.find((x) => x.key === res.body.key);
+    assert.equal(created.validDays, 365);
+    assert.equal(created.expiresAtSec, undefined);
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
+void test('POST /v1/admin/product-keys rejects conflicting expiry', async () => {
+  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
+  const dataPath = path.join(tmp, 'data.json');
+  fs.copyFileSync(path.join(root, 'data.example.json'), dataPath);
+
+  const { server, adminToken } = await makeServer(dataPath);
+  const port = await listen(server);
+  try {
+    const res = await request(port, 'POST', '/v1/admin/product-keys', {
+      token: adminToken,
+      body: { maxDevices: 3, expiresAtSec: 2000000000, validDays: 30 },
+    });
+    assert.equal(res.status, 400);
+    assert.equal(res.body.error, 'conflicting_expiry');
+  } finally {
+    server.close();
+    fs.rmSync(tmp, { recursive: true, force: true });
+  }
+});
+
 void test('POST /v1/admin/revoke by key revokes only that product key', async () => {
   const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'lic-'));
   const dataPath = path.join(tmp, 'data.json');

test/licenseLogic.test.mjs

@@ -0,0 +1,67 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+
+import {
+  DEFAULT_VALID_DAYS,
+  ensurePeriodActivated,
+  enrichLicenseEntry,
+  getEffectiveExpSec,
+  isFixedKey,
+  isPeriodKey,
+  parseProductKeyExpiry,
+  resolveTokenExp,
+  SECONDS_PER_DAY,
+} from '../lib/licenseLogic.mjs';
+
+void test('parseProductKeyExpiry defaults to period', () => {
+  const r = parseProductKeyExpiry({});
+  assert.equal(r.ok, true);
+  assert.equal(r.validDays, DEFAULT_VALID_DAYS);
+});
+
+void test('parseProductKeyExpiry rejects conflicting expiry fields', () => {
+  const r = parseProductKeyExpiry({ expiresAtSec: 100, validDays: 30 });
+  assert.equal(r.ok, false);
+  assert.equal(r.error, 'conflicting_expiry');
+});
+
+void test('ensurePeriodActivated sets exp once for period keys', () => {
+  const pk = { validDays: 10 };
+  const first = ensurePeriodActivated(pk, 1000);
+  assert.equal(first.changed, true);
+  assert.equal(first.exp, 1000 + 10 * SECONDS_PER_DAY);
+  assert.equal(pk.activatedAtSec, 1000);
+
+  const second = ensurePeriodActivated(pk, 5000);
+  assert.equal(second.changed, false);
+  assert.equal(second.exp, first.exp);
+});
+
+void test('resolveTokenExp for fixed and period keys', () => {
+  const fixed = { expiresAtSec: 9999 };
+  assert.equal(resolveTokenExp(fixed, 100), 9999);
+  assert.ok(isFixedKey(fixed));
+
+  const period = { validDays: 7, licenseExpSec: 7000 };
+  assert.equal(resolveTokenExp(period, 100), 7000);
+  assert.ok(isPeriodKey(period));
+});
+
+void test('enrichLicenseEntry exposes expiry metadata', () => {
+  const fixed = enrichLicenseEntry(
+    { key: 'k', sub: 's', pid: 'p', maxDevices: 1, expiresAtSec: 123 },
+    [],
+    false,
+  );
+  assert.equal(fixed.expiryMode, 'fixed');
+  assert.equal(fixed.effectiveExpSec, 123);
+
+  const period = enrichLicenseEntry(
+    { key: 'k', sub: 's', pid: 'p', maxDevices: 1, validDays: 30 },
+    [],
+    false,
+  );
+  assert.equal(period.expiryMode, 'period');
+  assert.equal(period.effectiveExpSec, null);
+  assert.equal(getEffectiveExpSec({ validDays: 30, licenseExpSec: 555 }), 555);
+});