use decorators to define routes

packages/cli/src/ResponseHelper.ts

@@ -146,9 +146,12 @@ const isUniqueConstraintError = (error: Error) =>
  * @returns
  */
 
-export function send(processFunction: (req: Request, res: Response) => Promise<any>, raw = false) {
+export function send<T, R extends Request, S extends Response>(
+	processFunction: (req: R, res: S) => Promise<T>,
+	raw = false,
+) {
 	// eslint-disable-next-line consistent-return
-	return async (req: Request, res: Response) => {
+	return async (req: R, res: S) => {
 		try {
 			const data = await processFunction(req, res);
 

packages/cli/src/UserManagement/controllers/AuthController.ts

@@ -0,0 +1,116 @@
+/* eslint-disable import/no-cycle */
+/* eslint-disable @typescript-eslint/no-unsafe-member-access */
+import type { Request, Response } from 'express';
+import type { IDataObject } from 'n8n-workflow';
+import { Db } from '../..';
+import { issueCookie, resolveJwt } from '../auth/jwt';
+import { AUTH_COOKIE_NAME } from '../../constants';
+import type { User } from '../../databases/entities/User';
+import { Get, Post, RestController } from '../decorators';
+import type { PublicUser } from '../Interfaces';
+import type { LoginRequest } from '../../requests';
+import { compareHash, sanitizeUser } from '../UserManagementHelper';
+import * as config from '../../../config';
+
+@RestController()
+export class AuthController {
+	/**
+	 * Log in a user.
+	 *
+	 * Authless endpoint.
+	 */
+	@Post('/login')
+	async login(req: LoginRequest, res: Response): Promise<PublicUser> {
+		const { email, password } = req.body;
+		if (!email) {
+			throw new Error('Email is required to log in');
+		}
+
+		if (!password) {
+			throw new Error('Password is required to log in');
+		}
+
+		let user: User | undefined;
+		try {
+			user = await Db.collections.User.findOne(
+				{ email },
+				{
+					relations: ['globalRole'],
+				},
+			);
+		} catch (error) {
+			throw new Error('Unable to access database.');
+		}
+
+		if (!user || !user.password || !(await compareHash(password, user.password))) {
+			// password is empty until user signs up
+			const error = new Error('Wrong username or password. Do you have caps lock on?');
+			// @ts-ignore
+			error.httpStatusCode = 401;
+			throw error;
+		}
+
+		await issueCookie(res, user);
+
+		return sanitizeUser(user);
+	}
+
+	/**
+	 * Manually check the `n8n-auth` cookie.
+	 */
+	@Get('/login')
+	async loginCurrentUser(req: Request, res: Response): Promise<PublicUser> {
+		// Manually check the existing cookie.
+		const cookieContents = req.cookies?.[AUTH_COOKIE_NAME] as string | undefined;
+
+		let user: User;
+		if (cookieContents) {
+			// If logged in, return user
+			try {
+				user = await resolveJwt(cookieContents);
+
+				if (!config.get('userManagement.isInstanceOwnerSetUp')) {
+					res.cookie(AUTH_COOKIE_NAME, cookieContents);
+				}
+
+				return sanitizeUser(user);
+			} catch (error) {
+				res.clearCookie(AUTH_COOKIE_NAME);
+			}
+		}
+
+		if (config.get('userManagement.isInstanceOwnerSetUp')) {
+			const error = new Error('Not logged in');
+			// @ts-ignore
+			error.httpStatusCode = 401;
+			throw error;
+		}
+
+		try {
+			user = await Db.collections.User.findOneOrFail({ relations: ['globalRole'] });
+		} catch (error) {
+			throw new Error(
+				'No users found in database - did you wipe the users table? Create at least one user.',
+			);
+		}
+
+		if (user.email || user.password) {
+			throw new Error('Invalid database state - user has password set.');
+		}
+
+		await issueCookie(res, user);
+
+		return sanitizeUser(user);
+	}
+
+	/**
+	 * Log out a user.
+	 *
+	 * Authless endpoint.
+	 */
+	@Post('/logout')
+	logout(req: Request, res: Response): IDataObject {
+		res.clearCookie(AUTH_COOKIE_NAME);
+		return { loggedOut: true };
+	}
+}

packages/cli/src/UserManagement/controllers/MeController.ts

@@ -0,0 +1,185 @@
+/* eslint-disable import/no-cycle */
+import type { Response } from 'express';
+import validator from 'validator';
+import { LoggerProxy as Logger } from 'n8n-workflow';
+import { randomBytes } from 'crypto';
+import { Delete, Get, Patch, Post, RestController } from '../decorators';
+import type { AuthenticatedRequest, MeRequest } from '../../requests';
+import type { PublicUser } from '../Interfaces';
+import { compareHash, hashPassword, sanitizeUser, validatePassword } from '../UserManagementHelper';
+import { Db, InternalHooksManager, ResponseHelper } from '../..';
+import { User } from '../../databases/entities/User';
+import { validateEntity } from '../../GenericHelpers';
+import { issueCookie } from '../auth/jwt';
+
+@RestController('/me')
+export class MeController {
+	/**
+	 * Return the logged-in user.
+	 */
+	@Get()
+	async getCurrentUser(req: AuthenticatedRequest): Promise<PublicUser> {
+		return sanitizeUser(req.user);
+	}
+
+	/**
+	 * Update the logged-in user's settings, except password.
+	 */
+	@Patch()
+	async updateCurrentUser(req: MeRequest.Settings, res: Response): Promise<PublicUser> {
+		const { email } = req.body;
+		if (!email) {
+			Logger.debug('Request to update user email failed because of missing email in payload', {
+				userId: req.user.id,
+				payload: req.body,
+			});
+			throw new ResponseHelper.ResponseError('Email is mandatory', undefined, 400);
+		}
+
+		if (!validator.isEmail(email)) {
+			Logger.debug('Request to update user email failed because of invalid email in payload', {
+				userId: req.user.id,
+				invalidEmail: email,
+			});
+			throw new ResponseHelper.ResponseError('Invalid email address', undefined, 400);
+		}
+
+		const newUser = new User();
+
+		Object.assign(newUser, req.user, req.body);
+
+		await validateEntity(newUser);
+
+		const user = await Db.collections.User.save(newUser);
+
+		Logger.info('User updated successfully', { userId: user.id });
+
+		await issueCookie(res, user);
+
+		const updatedkeys = Object.keys(req.body);
+		void InternalHooksManager.getInstance().onUserUpdate({
+			user_id: req.user.id,
+			fields_changed: updatedkeys,
+		});
+
+		return sanitizeUser(user);
+	}
+
+	/**
+	 * Update the logged-in user's password.
+	 */
+	@Patch('/password')
+	async updatePassword(req: MeRequest.Password, res: Response) {
+		const { currentPassword, newPassword } = req.body;
+
+		if (typeof currentPassword !== 'string' || typeof newPassword !== 'string') {
+			throw new ResponseHelper.ResponseError('Invalid payload.', undefined, 400);
+		}
+
+		if (!req.user.password) {
+			throw new ResponseHelper.ResponseError('Requesting user not set up.');
+		}
+
+		const isCurrentPwCorrect = await compareHash(currentPassword, req.user.password);
+		if (!isCurrentPwCorrect) {
+			throw new ResponseHelper.ResponseError(
+				'Provided current password is incorrect.',
+				undefined,
+				400,
+			);
+		}
+
+		const validPassword = validatePassword(newPassword);
+
+		req.user.password = await hashPassword(validPassword);
+
+		const user = await Db.collections.User.save(req.user);
+		Logger.info('Password updated successfully', { userId: user.id });
+
+		await issueCookie(res, user);
+
+		void InternalHooksManager.getInstance().onUserUpdate({
+			user_id: req.user.id,
+			fields_changed: ['password'],
+		});
+
+		return { success: true };
+	}
+
+	/**
+	 * Store the logged-in user's survey answers.
+	 */
+	@Post('/survey')
+	async storeSurveyAnswers(req: MeRequest.SurveyAnswers) {
+		const { body: personalizationAnswers } = req;
+
+		if (!personalizationAnswers) {
+			Logger.debug('Request to store user personalization survey failed because of empty payload', {
+				userId: req.user.id,
+			});
+			throw new ResponseHelper.ResponseError(
+				'Personalization answers are mandatory',
+				undefined,
+				400,
+			);
+		}
+
+		await Db.collections.User.save({
+			id: req.user.id,
+			personalizationAnswers,
+		});
+
+		Logger.info('User survey updated successfully', { userId: req.user.id });
+
+		void InternalHooksManager.getInstance().onPersonalizationSurveySubmitted(
+			req.user.id,
+			personalizationAnswers,
+		);
+
+		return { success: true };
+	}
+
+	/**
+	 * Creates an API Key
+	 */
+	@Post('/api-key')
+	async createAPIKey(req: AuthenticatedRequest) {
+		const apiKey = `n8n_api_${randomBytes(40).toString('hex')}`;
+
+		await Db.collections.User.update(req.user.id, { apiKey });
+
+		const telemetryData = {
+			user_id: req.user.id,
+			public_api: false,
+		};
+
+		void InternalHooksManager.getInstance().onApiKeyCreated(telemetryData);
+
+		return { apiKey };
+	}
+
+	/**
+	 * Get an API Key
+	 */
+	@Get('/api-key')
+	async getAPIKey(req: AuthenticatedRequest) {
+		return { apiKey: req.user.apiKey };
+	}
+
+	/**
+	 * Deletes an API Key
+	 */
+	@Delete('/api-key')
+	async deleteAPIKey(req: AuthenticatedRequest) {
+		await Db.collections.User.update(req.user.id, { apiKey: null });
+
+		const telemetryData = {
+			user_id: req.user.id,
+			public_api: false,
+		};
+
+		void InternalHooksManager.getInstance().onApiKeyDeleted(telemetryData);
+
+		return { success: true };
+	}
+}