feat(core): Add license support to n8n

packages/cli/package.json

@@ -103,12 +103,13 @@
     "tsconfig-paths": "^3.14.1"
   },
   "dependencies": {
+    "@n8n_io/license-sdk": "^1.3.4",
     "@oclif/command": "^1.8.16",
     "@oclif/core": "^1.16.4",
     "@oclif/errors": "^1.3.6",
     "@rudderstack/rudder-sdk-node": "1.0.6",
-    "@sentry/node": "^7.17.3",
     "@sentry/integrations": "^7.17.3",
+    "@sentry/node": "^7.17.3",
     "axios": "^0.21.1",
     "basic-auth": "^2.0.1",
     "bcryptjs": "^2.4.3",

packages/cli/src/License.ts

@@ -0,0 +1,121 @@
+import { LicenseManager, TLicenseContainerStr } from '@n8n_io/license-sdk';
+import { ILogger } from 'n8n-workflow';
+import { getLogger } from './Logger';
+import config from '@/config';
+import * as Db from '@/Db';
+import { LICENSE_FEATURES, SETTINGS_LICENSE_CERT_KEY } from './constants';
+
+async function loadCertStr(): Promise<TLicenseContainerStr> {
+	const databaseSettings = await Db.collections.Settings.findOne({
+		where: {
+			key: SETTINGS_LICENSE_CERT_KEY,
+		},
+	});
+
+	return databaseSettings?.value ?? '';
+}
+
+async function saveCertStr(value: TLicenseContainerStr): Promise<void> {
+	await Db.collections.Settings.upsert(
+		{
+			key: SETTINGS_LICENSE_CERT_KEY,
+			value,
+			loadOnStartup: false,
+		},
+		['key'],
+	);
+}
+
+export class License {
+	private logger: ILogger;
+
+	private manager: LicenseManager | undefined;
+
+	constructor() {
+		this.logger = getLogger();
+	}
+
+	async init(instanceId: string, version: string) {
+		if (this.manager) {
+			return;
+		}
+
+		const server = config.getEnv('license.serverUrl');
+		const autoRenewEnabled = config.getEnv('license.autoRenewEnabled');
+		const autoRenewOffset = config.getEnv('license.autoRenewOffset');
+
+		try {
+			this.manager = new LicenseManager({
+				server,
+				tenantId: 1,
+				productIdentifier: `n8n-${version}`,
+				autoRenewEnabled,
+				autoRenewOffset,
+				logger: this.logger,
+				loadCertStr,
+				saveCertStr,
+				deviceFingerprint: () => instanceId,
+			});
+
+			await this.manager.initialize();
+		} catch (e: unknown) {
+			if (e instanceof Error) {
+				this.logger.error('Could not initialize license manager sdk', e);
+			}
+		}
+	}
+
+	async activate(activationKey: string): Promise<void> {
+		if (!this.manager) {
+			return;
+		}
+
+		if (this.manager.isValid()) {
+			return;
+		}
+
+		try {
+			await this.manager.activate(activationKey);
+		} catch (e) {
+			if (e instanceof Error) {
+				this.logger.error('Could not activate license', e);
+			}
+		}
+	}
+
+	async renew() {
+		if (!this.manager) {
+			return;
+		}
+
+		try {
+			await this.manager.renew();
+		} catch (e) {
+			if (e instanceof Error) {
+				this.logger.error('Could not renew license', e);
+			}
+		}
+	}
+
+	isFeatureEnabled(feature: string): boolean {
+		if (!this.manager) {
+			return false;
+		}
+
+		return this.manager.hasFeatureEnabled(feature);
+	}
+
+	isSharingEnabled() {
+		return this.isFeatureEnabled(LICENSE_FEATURES.SHARING);
+	}
+}
+
+let licenseInstance: License | undefined;
+
+export function getLicense(): License {
+	if (licenseInstance === undefined) {
+		licenseInstance = new License();
+	}
+
+	return licenseInstance;
+}

packages/cli/src/Server.ts

@@ -160,6 +160,7 @@ import * as WorkflowExecuteAdditionalData from '@/WorkflowExecuteAdditionalData'
 import { ResponseError } from '@/ResponseHelper';
 import { toHttpNodeParameters } from '@/CurlConverterHelper';
 import { setupErrorMiddleware } from '@/ErrorReporting';
+import { getLicense } from '@/License';
 
 require('body-parser-xml')(bodyParser);
 
@@ -384,6 +385,16 @@ class App {
 		return this.frontendSettings;
 	}
 
+	async initLicense(): Promise<void> {
+		const license = getLicense();
+		await license.init(this.frontendSettings.instanceId, this.frontendSettings.versionCli);
+
+		const activationKey = config.getEnv('license.activationKey');
+		if (activationKey) {
+			await license.activate(activationKey);
+		}
+	}
+
 	async config(): Promise<void> {
 		const enableMetrics = config.getEnv('endpoints.metrics.enable');
 		let register: Registry;
@@ -406,6 +417,8 @@ class App {
 
 		await this.externalHooks.run('frontend.settings', [this.frontendSettings]);
 
+		await this.initLicense();
+
 		const excludeEndpoints = config.getEnv('security.excludeEndpoints');
 
 		const ignoredEndpoints = [

packages/cli/src/UserManagement/UserManagementHelper.ts

@@ -13,6 +13,7 @@ import { Role } from '@db/entities/Role';
 import { AuthenticatedRequest } from '@/requests';
 import config from '@/config';
 import { getWebhookBaseUrl } from '../WebhookHelpers';
+import { getLicense } from '@/License';
 import { WhereClause } from '@/Interfaces';
 
 export async function getWorkflowOwner(workflowId: string | number): Promise<User> {
@@ -41,7 +42,11 @@ export function isUserManagementEnabled(): boolean {
 }
 
 export function isSharingEnabled(): boolean {
-	return isUserManagementEnabled() && config.getEnv('enterprise.features.sharing');
+	const license = getLicense();
+	return (
+		isUserManagementEnabled() &&
+		(config.getEnv('enterprise.features.sharing') || license.isSharingEnabled())
+	);
 }
 
 export function isUserManagementDisabled(): boolean {

packages/cli/src/commands/license/clear.ts

@@ -0,0 +1,42 @@
+import { Command } from '@oclif/command';
+
+import { LoggerProxy } from 'n8n-workflow';
+
+import * as Db from '@/Db';
+
+import { getLogger } from '@/Logger';
+import { SETTINGS_LICENSE_CERT_KEY } from '@/constants';
+
+export class ClearLicenseCommand extends Command {
+	static description = 'Clear license';
+
+	static examples = [`$ n8n clear:license`];
+
+	async run() {
+		const logger = getLogger();
+		LoggerProxy.init(logger);
+
+		try {
+			await Db.init();
+
+			console.info('Clearing license from database.');
+			await Db.collections.Settings.delete({
+				key: SETTINGS_LICENSE_CERT_KEY,
+			});
+			console.info('Done. Restart n8n to take effect.');
+		} catch (e: unknown) {
+			console.error('Error updating database. See log messages for details.');
+			logger.error('\nGOT ERROR');
+			logger.info('====================================');
+			if (e instanceof Error) {
+				logger.error(e.message);
+				if (e.stack) {
+					logger.error(e.stack);
+				}
+			}
+			this.exit(1);
+		}
+
+		this.exit();
+	}
+}

packages/cli/src/config/schema.ts

@@ -987,4 +987,31 @@ export const schema = {
 			env: 'N8N_ONBOARDING_CALL_PROMPTS_ENABLED',
 		},
 	},
+
+	license: {
+		serverUrl: {
+			format: String,
+			default: 'https://license.n8n.io/v1',
+			env: 'N8N_LICENSE_SERVER_URL',
+			doc: 'License server url to retrieve license.',
+		},
+		autoRenewEnabled: {
+			format: Boolean,
+			default: true,
+			env: 'N8N_LICENSE_AUTO_RENEW_ENABLED',
+			doc: 'Whether autorenew for licenses is enabled.',
+		},
+		autoRenewOffset: {
+			format: Number,
+			default: 60 * 60 * 72, // 72 hours
+			env: 'N8N_LICENSE_AUTO_RENEW_OFFSET',
+			doc: 'How many seconds before expiry a license should get automatically renewed. ',
+		},
+		activationKey: {
+			format: String,
+			default: '',
+			env: 'N8N_LICENSE_ACTIVATION_KEY',
+			doc: 'Activation key to initialize license',
+		},
+	},
 };

packages/cli/src/constants.ts

@@ -41,3 +41,9 @@ export const UNKNOWN_FAILURE_REASON = 'Unknown failure reason';
 
 export const WORKFLOW_REACTIVATE_INITIAL_TIMEOUT = 1000;
 export const WORKFLOW_REACTIVATE_MAX_TIMEOUT = 180000;
+
+export const SETTINGS_LICENSE_CERT_KEY = 'license.cert';
+
+export enum LICENSE_FEATURES {
+	SHARING = 'feat:sharing',
+}

packages/cli/test/unit/License.test.ts

@@ -0,0 +1,77 @@
+import { LicenseManager } from '@n8n_io/license-sdk';
+import config from '@/config';
+import { License } from '@/License';
+
+jest.mock('@n8n_io/license-sdk');
+
+const MOCK_SERVER_URL = 'https://server.com/v1';
+const MOCK_RENEW_OFFSET = 259200;
+const MOCK_INSTANCE_ID = 'instance-id';
+const MOCK_N8N_VERSION = '0.27.0';
+const MOCK_ACTIVATION_KEY = 'activation-key';
+const MOCK_FEATURE_FLAG = 'feat:mock';
+
+describe('License', () => {
+	beforeAll(() => {
+		config.set('license.serverUrl', MOCK_SERVER_URL);
+		config.set('license.autoRenewEnabled', true);
+		config.set('license.autoRenewOffset', MOCK_RENEW_OFFSET);
+	});
+
+	let license;
+
+	beforeEach(async () => {
+		license = new License();
+		await license.init(MOCK_INSTANCE_ID, MOCK_N8N_VERSION);
+	});
+
+	test('initializes license manager', async () => {
+		expect(LicenseManager).toHaveBeenCalledWith({
+			autoRenewEnabled: true,
+			autoRenewOffset: MOCK_RENEW_OFFSET,
+			deviceFingerprint: expect.any(Function),
+			productIdentifier: `n8n-${MOCK_N8N_VERSION}`,
+			logger: expect.anything(),
+			loadCertStr: expect.any(Function),
+			saveCertStr: expect.any(Function),
+			server: MOCK_SERVER_URL,
+			tenantId: 1,
+		});
+	});
+
+	test('activates license if current license is not valid', async () => {
+		LicenseManager.prototype.isValid.mockReturnValue(false);
+
+		await license.activate(MOCK_ACTIVATION_KEY);
+
+		expect(LicenseManager.prototype.isValid).toHaveBeenCalled();
+		expect(LicenseManager.prototype.activate).toHaveBeenCalledWith(MOCK_ACTIVATION_KEY);
+	});
+
+	test('does not activate license if current license is valid', async () => {
+		LicenseManager.prototype.isValid.mockReturnValue(true);
+
+		await license.activate(MOCK_ACTIVATION_KEY);
+
+		expect(LicenseManager.prototype.isValid).toHaveBeenCalled();
+		expect(LicenseManager.prototype.activate).not.toHaveBeenCalledWith();
+	});
+
+	test('renews license', async () => {
+		await license.renew();
+
+		expect(LicenseManager.prototype.renew).toHaveBeenCalled();
+	});
+
+	test('check if feature is enabled', async () => {
+		await license.isFeatureEnabled(MOCK_FEATURE_FLAG);
+
+		expect(LicenseManager.prototype.hasFeatureEnabled).toHaveBeenCalledWith(MOCK_FEATURE_FLAG);
+	});
+
+	test('check if sharing feature is enabled', async () => {
+		await license.isFeatureEnabled(MOCK_FEATURE_FLAG);
+
+		expect(LicenseManager.prototype.hasFeatureEnabled).toHaveBeenCalledWith(MOCK_FEATURE_FLAG);
+	});
+});