fix: issue-1593- validate access token on login register

backend/package.json

@@ -54,6 +54,7 @@
     "dotenv": "^16.0.0",
     "express": "^4.17.3",
     "joi": "^17.6.0",
+    "jwks-rsa": "^3.1.0",
     "jwt-decode": "^3.1.2",
     "lint-staged": "^13.0.3",
     "moment": "^2.29.4",
@@ -113,4 +114,4 @@
       "prettier --write"
     ]
   }
-}
+}

backend/src/infrastructure/config/configuration.ts

@@ -32,7 +32,8 @@ export const configuration = (): Configuration => {
 			clientSecret: process.env.AZURE_CLIENT_SECRET as string,
 			tenantId: process.env.AZURE_TENANT_ID as string,
 			enabled: process.env.AZURE_ENABLE === 'true',
-			authority: `https://login.microsoftonline.com/${process.env.AZURE_TENANT_ID}`
+			authority: `https://login.microsoftonline.com/${process.env.AZURE_TENANT_ID}`,
+			wellknown: `https://login.microsoftonline.com/${process.env.AZURE_TENANT_ID}/.well-known/openid-configuration`
 		},
 		smtp: {
 			host: process.env.SMTP_HOST as string,

backend/src/libs/constants/azure.ts

@@ -7,3 +7,5 @@ export const AZURE_CLIENT_SECRET = 'azure.clientSecret';
 export const AZURE_TENANT_ID = 'azure.tenantId';
 
 export const AZURE_AUTHORITY = 'azure.authority';
+
+export const AZURE_WELLKNOWN = 'azure.wellknown';

backend/src/libs/test-utils/mocks/factories/azure-user-factory.ts

@@ -0,0 +1,22 @@
+import faker from '@faker-js/faker';
+import { buildTestFactory } from './generic-factory.mock';
+import { AzureUserDTO } from 'src/modules/azure/dto/azure-user.dto';
+
+const mockUserData = (): AzureUserDTO => {
+	const mail = faker.internet.email();
+
+	return {
+		id: faker.datatype.uuid(),
+		displayName: faker.name.firstName() + faker.name.lastName(),
+		mail: mail,
+		userPrincipalName: mail,
+		createdDateTime: faker.date.past(5),
+		accountEnabled: faker.datatype.boolean(),
+		deletedDateTime: faker.datatype.boolean() ? faker.date.recent(1) : null,
+		employeeLeaveDateTime: faker.datatype.boolean() ? faker.date.recent(1) : null
+	};
+};
+
+export const AzureUserFactory = buildTestFactory<AzureUserDTO>(() => {
+	return mockUserData();
+});

backend/src/modules/azure/applications/register-or-login.azure.use-case.spec.ts

@@ -0,0 +1,133 @@
+import { DeepMocked, createMock } from '@golevelup/ts-jest';
+import { UseCase } from 'src/libs/interfaces/use-case.interface';
+import { Test, TestingModule } from '@nestjs/testing';
+import LoggedUserDto from 'src/modules/users/dto/logged.user.dto';
+import { registerOrLoginUseCase } from '../azure.providers';
+import { AUTH_AZURE_SERVICE } from '../constants';
+import { AuthAzureServiceInterface } from '../interfaces/services/auth.azure.service.interface';
+import { CREATE_USER_SERVICE, GET_USER_SERVICE } from 'src/modules/users/constants';
+import { GetUserServiceInterface } from 'src/modules/users/interfaces/services/get.user.service.interface';
+import { CreateUserServiceInterface } from 'src/modules/users/interfaces/services/create.user.service.interface';
+import { GET_TOKEN_AUTH_SERVICE, UPDATE_USER_SERVICE } from 'src/modules/auth/constants';
+import { UpdateUserServiceInterface } from 'src/modules/users/interfaces/services/update.user.service.interface';
+import { GetTokenAuthServiceInterface } from 'src/modules/auth/interfaces/services/get-token.auth.service.interface';
+import { STORAGE_SERVICE } from 'src/modules/storage/constants';
+import { StorageServiceInterface } from 'src/modules/storage/interfaces/services/storage.service';
+import { ConfigService } from '@nestjs/config';
+import configService from 'src/libs/test-utils/mocks/configService.mock';
+import { JwtService } from '@nestjs/jwt';
+
+describe('RegisterOrLoginUserUseCase', () => {
+	let registerOrLogin: UseCase<string, LoggedUserDto | null>;
+	let authAzureServiceMock: DeepMocked<AuthAzureServiceInterface>;
+	let getUserService: DeepMocked<GetUserServiceInterface>;
+	let updateUserServiceMock: DeepMocked<UpdateUserServiceInterface>;
+	let tokenServiceMock: DeepMocked<GetTokenAuthServiceInterface>;
+
+	beforeAll(async () => {
+		const module: TestingModule = await Test.createTestingModule({
+			providers: [
+				registerOrLoginUseCase,
+				{
+					provide: AUTH_AZURE_SERVICE,
+					useValue: createMock<AuthAzureServiceInterface>()
+				},
+				{
+					provide: GET_USER_SERVICE,
+					useValue: createMock<GetUserServiceInterface>()
+				},
+				{
+					provide: CREATE_USER_SERVICE,
+					useValue: createMock<CreateUserServiceInterface>()
+				},
+				{
+					provide: UPDATE_USER_SERVICE,
+					useValue: createMock<UpdateUserServiceInterface>()
+				},
+				{
+					provide: GET_TOKEN_AUTH_SERVICE,
+					useValue: createMock<GetTokenAuthServiceInterface>()
+				},
+				{
+					provide: STORAGE_SERVICE,
+					useValue: createMock<StorageServiceInterface>()
+				},
+				{
+					provide: ConfigService,
+					useValue: configService
+				},
+				{
+					provide: JwtService,
+					useValue: createMock<JwtService>()
+				}
+			]
+		}).compile();
+
+		registerOrLogin = module.get(registerOrLoginUseCase.provide);
+		authAzureServiceMock = module.get(AUTH_AZURE_SERVICE);
+		getUserService = module.get(GET_USER_SERVICE);
+		updateUserServiceMock = module.get(UPDATE_USER_SERVICE);
+		tokenServiceMock = module.get(GET_TOKEN_AUTH_SERVICE);
+	});
+
+	beforeEach(() => {
+		jest.clearAllMocks();
+		jest.resetAllMocks();
+	});
+
+	it('should be defined', () => {
+		expect(registerOrLogin).toBeDefined();
+	});
+	describe('execute', () => {
+		it('should return null when validateAccessToken returns false', async () => {
+			const spy = jest
+				.spyOn(registerOrLogin, 'validateAccessToken' as any)
+				.mockResolvedValueOnce(false);
+			expect(await registerOrLogin.execute('')).toBe(null);
+			spy.mockRestore();
+		});
+		it('should restore user when is deleted and signin normally', async () => {
+			const spy = jest.spyOn(registerOrLogin, 'validateAccessToken' as any).mockResolvedValueOnce({
+				unique_name: 'test',
+				email: 'test@test.com',
+				name: 'test',
+				given_name: 'test',
+				family_name: 'test'
+			});
+			authAzureServiceMock.getUserFromAzure.mockResolvedValueOnce({
+				accountEnabled: true,
+				deletedDateTime: null
+			} as never);
+			getUserService.getByEmail.mockResolvedValueOnce({
+				_id: 'id',
+				email: 'test@test.com',
+				isDeleted: true
+			} as never);
+			tokenServiceMock.getTokens.mockResolvedValueOnce({} as never);
+			expect(await registerOrLogin.execute('')).toHaveProperty('email', 'test@test.com');
+			expect(updateUserServiceMock.restoreUser).toHaveBeenCalled();
+			spy.mockRestore();
+		});
+		it('should singIn the user', async () => {
+			const spy = jest.spyOn(registerOrLogin, 'validateAccessToken' as any).mockResolvedValueOnce({
+				unique_name: 'test',
+				email: 'test@test.com',
+				name: 'test',
+				given_name: 'test',
+				family_name: 'test'
+			});
+			authAzureServiceMock.getUserFromAzure.mockResolvedValueOnce({
+				accountEnabled: true,
+				deletedDateTime: null
+			} as never);
+			getUserService.getByEmail.mockResolvedValueOnce({
+				_id: 'id',
+				email: 'test@test.com',
+				isDeleted: false
+			} as never);
+			tokenServiceMock.getTokens.mockResolvedValueOnce({} as never);
+			expect(await registerOrLogin.execute('')).toHaveProperty('email', 'test@test.com');
+			spy.mockRestore();
+		});
+	});
+});

backend/src/modules/azure/applications/register-or-login.azure.use-case.ts

@@ -1,9 +1,8 @@
-import { Inject, Injectable } from '@nestjs/common';
+import { Inject, Injectable, Logger } from '@nestjs/common';
 import { RegisterOrLoginAzureUseCaseInterface } from '../interfaces/applications/register-or-login.azure.use-case.interface';
 import { AuthAzureServiceInterface } from '../interfaces/services/auth.azure.service.interface';
 import { AUTH_AZURE_SERVICE } from '../constants';
 import { AzureDecodedUser } from '../services/auth.azure.service';
-import jwt_decode from 'jwt-decode';
 import { GetUserServiceInterface } from 'src/modules/users/interfaces/services/get.user.service.interface';
 import { CreateUserServiceInterface } from 'src/modules/users/interfaces/services/create.user.service.interface';
 import User from 'src/modules/users/entities/user.schema';
@@ -15,9 +14,16 @@ import { StorageServiceInterface } from 'src/modules/storage/interfaces/services
 import { CREATE_USER_SERVICE, GET_USER_SERVICE } from 'src/modules/users/constants';
 import { STORAGE_SERVICE } from 'src/modules/storage/constants';
 import { GET_TOKEN_AUTH_SERVICE, UPDATE_USER_SERVICE } from 'src/modules/auth/constants';
+import { JwksClient } from 'jwks-rsa';
+import { AZURE_CLIENT_ID, AZURE_WELLKNOWN } from 'src/libs/constants/azure';
+import { ConfigService } from '@nestjs/config';
+import { JwtService } from '@nestjs/jwt';
+import axios from 'axios';
 
 @Injectable()
 export class RegisterOrLoginAzureUseCase implements RegisterOrLoginAzureUseCaseInterface {
+	private readonly logger: Logger = new Logger(RegisterOrLoginAzureUseCase.name);
+
 	constructor(
 		@Inject(AUTH_AZURE_SERVICE)
 		private readonly authAzureService: AuthAzureServiceInterface,
@@ -30,12 +36,19 @@ export class RegisterOrLoginAzureUseCase implements RegisterOrLoginAzureUseCaseI
 		@Inject(GET_TOKEN_AUTH_SERVICE)
 		private readonly getTokenService: GetTokenAuthServiceInterface,
 		@Inject(STORAGE_SERVICE)
-		private readonly storageService: StorageServiceInterface
+		private readonly storageService: StorageServiceInterface,
+		private readonly configService: ConfigService,
+		private readonly jwtService: JwtService
 	) {}
 
 	async execute(azureToken: string) {
+		const validAccessToken = await this.validateAccessToken(azureToken);
+
+		if (!validAccessToken) {
+			return null;
+		}
 		const { unique_name, email, name, given_name, family_name } = <AzureDecodedUser>(
-			jwt_decode(azureToken)
+			validAccessToken
 		);
 
 		const emailOrUniqueName = email ?? unique_name;
@@ -44,11 +57,23 @@ export class RegisterOrLoginAzureUseCase implements RegisterOrLoginAzureUseCaseI
 
 		if (!userFromAzure) return null;
 
-		const user = await this.getUserService.getByEmail(emailOrUniqueName);
+		//This will check if user exists, and if the acount is disabled
+		if (
+			!userFromAzure ||
+			!userFromAzure.accountEnabled ||
+			(userFromAzure.deletedDateTime !== null && userFromAzure.deletedDateTime <= new Date())
+		) {
+			return null;
+		}
+
+		const user = await this.getUserService.getByEmail(emailOrUniqueName, true);
 
 		let userToAuthenticate: User;
 
 		if (user) {
+			if (user.isDeleted) {
+				await this.updateUserService.restoreUser(user._id);
+			}
 			userToAuthenticate = user;
 		} else {
 			const splitedName = name ? name.split(' ') : [];
@@ -107,4 +132,54 @@ export class RegisterOrLoginAzureUseCase implements RegisterOrLoginAzureUseCaseI
 			return '';
 		}
 	}
+
+	/**
+	 * Validate Azure access token using issuer public key
+	 * @param token
+	 * @returns false or decoded token payload
+	 */
+	private async validateAccessToken(token: string): Promise<Record<string, any> | boolean> {
+		try {
+			//Use wellknown to get issuer and jwks uri's
+			const wellKnown = this.configService.get(AZURE_WELLKNOWN);
+
+			const { data } = await axios.get(wellKnown);
+
+			const client = new JwksClient({
+				jwksUri: data.jwks_uri
+			});
+
+			const { header } = this.jwtService.decode(token, { complete: true }) as {
+				header: any;
+				payload: any;
+				signature: any;
+			};
+
+			if (!header) {
+				return false;
+			}
+
+			const secret = await client.getSigningKey(header.kid);
+
+			const decodedToken = await this.jwtService.verifyAsync(token, {
+				algorithms: ['RS256'],
+				audience: this.configService.get(AZURE_CLIENT_ID),
+				secret: secret.getPublicKey(),
+				complete: true,
+				issuer: data.issuer
+			});
+
+			if (decodedToken) {
+				const { payload } = decodedToken;
+
+				return payload;
+			}
+		} catch (err) {
+			this.logger.error(
+				`An error occurred while validating azure access token. Message: ${err.message}`
+			);
+		}
+
+		return false;
+	}
 }

backend/src/modules/azure/azure.module.ts

@@ -5,9 +5,10 @@ import { StorageModule } from '../storage/storage.module';
 import UsersModule from '../users/users.module';
 import { authAzureService, checkUserUseCase, registerOrLoginUseCase } from './azure.providers';
 import AzureController from './controller/azure.controller';
+import { JwtRegister } from 'src/infrastructure/config/jwt.register';
 
 @Module({
-	imports: [UsersModule, AuthModule, CommunicationModule, StorageModule],
+	imports: [UsersModule, AuthModule, CommunicationModule, StorageModule, JwtRegister],
 	controllers: [AzureController],
 	providers: [authAzureService, checkUserUseCase, registerOrLoginUseCase]
 })

backend/src/modules/azure/dto/azure-user.dto.ts

@@ -0,0 +1,10 @@
+export type AzureUserDTO = {
+	id: string;
+	mail: string;
+	displayName: string;
+	userPrincipalName: string;
+	createdDateTime: Date;
+	accountEnabled: boolean;
+	deletedDateTime: Date | null;
+	employeeLeaveDateTime: Date | null;
+};

backend/src/modules/azure/interfaces/services/auth.azure.service.interface.ts

@@ -1,6 +1,6 @@
-import { AzureUserFound } from '../../services/auth.azure.service';
+import { AzureUserDTO } from '../../dto/azure-user.dto';
 
 export interface AuthAzureServiceInterface {
-	getUserFromAzure(email: string): Promise<AzureUserFound | undefined>;
+	getUserFromAzure(email: string): Promise<AzureUserDTO | undefined>;
 	fetchUserPhoto(userId: string): Promise<any>;
 }

backend/src/modules/azure/services/auth.azure.service.ts

@@ -4,14 +4,7 @@ import { ConfidentialClientApplication } from '@azure/msal-node';
 import { Client } from '@microsoft/microsoft-graph-client';
 import { ConfigService } from '@nestjs/config';
 import { AZURE_AUTHORITY, AZURE_CLIENT_ID, AZURE_CLIENT_SECRET } from 'src/libs/constants/azure';
-
-export type AzureUserFound = {
-	id: string;
-	mail: string;
-	displayName: string;
-	userPrincipalName: string;
-	createdDateTime: Date;
-};
+import { AzureUserDTO } from '../dto/azure-user.dto';
 
 export type AzureDecodedUser = {
 	unique_name: string;
@@ -54,10 +47,19 @@ export default class AuthAzureService implements AuthAzureServiceInterface {
 		});
 	}
 
-	async getUserFromAzure(email: string): Promise<AzureUserFound | undefined> {
+	async getUserFromAzure(email: string): Promise<AzureUserDTO | undefined> {
 		const { value } = await this.graphClient
 			.api('/users')
-			.select(['id', 'displayName', 'mail', 'userPrincipalName', 'createdDateTime'])
+			.select([
+				'id',
+				'mail',
+				'displayName',
+				'userPrincipalName',
+				'createdDateTime',
+				'accountEnabled',
+				'deletedDateTime',
+				'employeeLeaveDateTime'
+			])
 			.search(`"mail:${email}" OR "displayName:${email}" OR "userPrincipalName:${email}"`)
 			.orderby('displayName')
 			.get();

backend/src/modules/users/interfaces/services/get.user.service.interface.ts

@@ -7,7 +7,7 @@ export interface GetUserServiceInterface {
 		userId: string
 	): Promise<LeanDocument<UserDocument> | false>;
 
-	getByEmail(email: string): Promise<User>;
+	getByEmail(email: string, checkDeleted?: boolean): Promise<User>;
 
 	getById(id: string): Promise<User>;