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Peter Note
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2021. 9. 27. 18:04 React/Architecture

Micro Service의 앞단 Gateway에서 모든 호출에 대한 인증/인가를 처리한다. 먼저 JWT기반 인증에 대한 설정을 한다. 

  • passwort jwt 설정

 

JWT 처리를 위한  패키지 설치

passport를 통해 JWT를 관리한다.

  • userId/password 기반은 passport-local을 사용
  • JWT 체크 passport-jwt 사용
  • 추가적으로 http security를 위해 express middleware인 helmet 적용
$> yarn add @nestjs/jwt @nestjs/passport passport passport-local passport-jwt helmet
$> yarn add -D @types/passport-local @types/passport-jwt @types/express

 

Passport Local 적용

  • libs/domain/src/lib/auth/strategies 폴더 생성
  • local.strategy.ts 파일 생성
// local.strategy.ts
import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { Strategy } from 'passport-local';
import { AuthService } from '../auth.service';

@Injectable()
export class LocalStrategy extends PassportStrategy(Strategy) {
  constructor(private readonly authService: AuthService) {
    super();
  }

  async validate(username: string, password: string): Promise<any> {
    const user = await this.authService.validateUser(username, password);
    if (!user) {
      throw new UnauthorizedException({
        error: 'Incorrect username and password'
      });
    }
    return user;
  }
}

 

Username/Password 체크하기

libs/domain/src/lib/auth/  폴더 생성하고, auth.service.ts 파일을 생성한다. 

  • validateUser: LocalStrategy에서 호출한다. username/password 로그인 유효성을 login 호출 이전에 체크한다.
  • login: validate user인 경우 사용자 정보를 통한 webtoken 생성
// auth.service.ts
import { Injectable, UnauthorizedException } from '@nestjs/common';
import { JwtService } from '@nestjs/jwt';

import { User } from '../entities/user/user.model';
import { UserService } from '../entities/user/user.service';
import { bcryptCompare } from '../utilties/bcrypt.util';

@Injectable()
export class AuthService {
  constructor(
    private readonly userService: UserService,
    private readonly jwtService: JwtService,
  ) { }

  async validateUser(username: string, pass: string): Promise<any> {
    const user: any = await this.userService.findOne(username) || {};
    if (user && pass === user.password) {
      const { password, ...result } = user;
      return result;
    }
    return null;
  }

  async login(loginUser: User): Promise<any> {
    const user = await this.userService.findOne(loginUser.username);
    if (user) {
      const payload = { username: user.username, sub: user.id, email: user.email, role: user.role };
      return {
        access_token: this.jwtService.sign(payload),
      };
    } else {
      throw new UnauthorizedException({
        error: 'There is no user'
      });
    }
  }
}

토큰 생성확인은 https://jwt.io/ 에서 할 수 있다. 

 

libs/domain/src/lib/auth/auth.module.ts 파일을 생성하고, config.json파일에 AUTH 프로퍼티를 추가한다. 

  • JwtModule을 등록한다. 
  • secret은 반드시 별도의 환경설정 파일에서 관리한다. 
  • AuthService도 등록한다.
  • User 정보를 read하기 위해 EntitiesModule도 imports 에 설정한다.
// apps/gateway/api/src/environments/config.json
{
  "HTTP_PORT": 8000,
  "AUTH": {
    "SECRET": "iot_secret_auth",
    "EXPIRED_ON": "1d"
  },
  ...
}

// auth.module.ts
import { Module } from '@nestjs/common';
import { JwtModule } from '@nestjs/jwt';
import { PassportModule } from '@nestjs/passport';

import { GatewayConfiguration, loadConfigJson } from '@rnm/shared';
import { EntitiesModule } from '../entities/entity.module';

import { AuthService } from './auth.service';
import { JwtStrategy } from './strategies/jwt.strategy';
import { LocalStrategy } from './strategies/local.strategy';

const config: GatewayConfiguration = loadConfigJson();

@Module({
  imports: [
    PassportModule,
    JwtModule.register({
      secret: config.AUTH?.SECRET,
      signOptions: { expiresIn: config.AUTH?.EXPIRED_ON },
    }),
    EntitiesModule
  ],
  providers: [AuthService, LocalStrategy, JwtStrategy],
  exports: [AuthService],
})
export class AuthModule { }

 

Passport JWT 적용

로그인이 성공하면 jsonwebtoken 을 생성하고, 이후 request(요청)에 대해 JWT를 체크하는 환경설정을 한다.

  • libs/domain/src/lib/auth/strategies/jwt.strategy.ts 파일  생성
    • request header의 Bearer Token 체크 => Cookie 사용으로 변경 (master branch소스 참조)
    • 확인하는 secret 설정
  • AuthModule에 등록한다.
// jwt.strategy.ts
import { Injectable } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';
import { Request } from 'express';

import { loadConfigJson } from '@rnm/shared';
const config: any = loadConfigJson();

@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
  constructor() {
    super({
      // jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
      // Cookie를 사용한다
      jwtFromRequest: ExtractJwt.fromExtractors([(request: Request) => {
        return request?.cookies?.LOGIN_TOKEN;
      }]),
      ignoreExpiration: false,
      secretOrKey: config?.AUTH?.SECRET
    });
  }

  async validate(user: any): Promise<any> {
    // return { id: payload.sub, username: payload.username };
    return user;
  }
}

 

Password 암호화

암호화 모듈 설치

$> yarn add bcrypt
$> yarn add -D @types/bcrypt

암호화 유틸리티를 생성한다. libs/domain/src/lib/utilties/bcrypt.util.ts 파일 생성

  • 사용자 생성시 패스워드
  • 입력 패스워드를 DB의 암호화된 패스워드와 비교한다.
import * as bcrypt from 'bcrypt';

// 사용자의 패스워드 암호화
export const bcryptHash = (plainText: string, saltOrRounds = 10): Promise<string> => {
  return bcrypt.hash(plainText, saltOrRounds);
}

// 입력 패스워드와 DB 패스워드 비교
export const bcryptCompare = (plainText: string, hashedMessage: string): Promise<boolean> => {
  return bcrypt.compare(plainText, hashedMessage);
}

libs/domain/src/lib/auth/auth.service.ts 의 validateUser에서 암호화된 password를 체크토록 수정한다.

// auth.service.ts
import { bcryptCompare } from '../utilties/bcrypt.util';

@Injectable()
export class AuthService {
  constructor(
    private readonly userService: UserService,
    private readonly jwtService: JwtService,
  ) { }

  async validateUser(username: string, pass: string): Promise<any> {
    const user: any = await this.userService.findOne(username) || {};
    // 암호화된 패스워드를 입력 패스워드와 같은지 비교
    const isMatch = await bcryptCompare(pass, user.password);
    if (user && isMatch) {
      const { password, ...result } = user;
      return result;
    }
    return null;
  }
  ...
}

 

 

로그인 하기

  • apps/gateway/api/src/app/auth/auth.controller.ts 파일을 신규 생성.
  • apps/gateway/api/src/app/app.module.ts 설정
    • "auth/login" API에 대해 static server에 exclude 설정
    • AuthModule imports에 설정
    • AuthController 등록
// auth.controller.ts
import { Body, Controller, Post, UseGuards } from '@nestjs/common';

import { AuthService, LocalAuthGuard, User } from '@rnm/domain';

@Controller()
export class AuthController {
  constructor(
    private readonly authService: AuthService
  ) { }

  @UseGuards(LocalAuthGuard)
  @Post('auth/login')
  async login(@Body() user: User): Promise<Response> {
    return this.authService.login(user);
  }
}

// app.module.ts
@Module({
  imports: [
    ServeStaticModule.forRoot({
      rootPath: join(__dirname, 'public'),
      exclude: [
        '/auth/*',
        '/api/gateway*', '/api/dashboard*', '/api/configuration*', '/api/back-office*',
        '/dashboard*', '/configuration*', '/back-office*'
      ],
    }),
    // ORM
    TypeOrmModule.forRoot({
      ...ormConfigService.getTypeOrmConfig(),
      entities: getMetadataArgsStorage().tables.map(tbl => tbl.target)
    }),
    EntitiesModule,
    // MicroService
    DashboardModule,
    // Auth
    AuthModule
  ],
  controllers: [
    AppController,
    AuthController,
    UserController
  ],
  providers: [GatewayApiAppService]
})
export class AppModule { }

 

UseGuard에서 username/password는  LocalAuthGuard를 등록한다. 이를 위해 libs/domain/src/lib/auth/guards/local-auth.guard.ts 파일 생성한다.

import { Body, Controller, Delete, Get, Param, Post, Put, UseGuards } from '@nestjs/common';

import { JwtAuthGuard, User, UserService } from '@rnm/domain';

@Controller('api/gateway/user')
export class UserController {
  constructor(
    private readonly service: UserService
  ) { }

  @UseGuards(JwtAuthGuard)
  @Post()
  create(@Body() data: User): Promise<User> {
    return this.service.create(data);
  }

  @UseGuards(JwtAuthGuard)
  @Put(':id')
  updateOne(@Param('id') id: number, @Body() data: User): Promise<any> {
    return this.service.updateOne(id, data);
  }

  @UseGuards(JwtAuthGuard)
  @Get()
  findAll(): Promise<User[]> {
    return this.service.findAll();
  }

  @UseGuards(JwtAuthGuard)
  @Get(':username')
  findOne(@Param('username') username: string): Promise<User | undefined> {
    return this.service.findOne(username);
  }

  @UseGuards(JwtAuthGuard)
  @Delete(':id')
  deleteOne(@Param('id') id: string): Promise<any> {
    return this.service.deleteOne(id);
  }
}
import { Injectable } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';

@Injectable()
export class LocalAuthGuard extends AuthGuard('local') { }

User 생성하는 apps/gateway/api/src/app/user/user.controller.ts 에도 @UseGuards 를 JWT 토큰 체크하는 Guard로 등록한다. 이를 위하여 libs/domain/src/lib/auth/guards/jwt-auth.guard.ts 파일을 생성한다. 

import { ExecutionContext, Injectable, UnauthorizedException } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';

@Injectable()
export class JwtAuthGuard extends AuthGuard('jwt') {
  canActivate(context: ExecutionContext) {
    // Add your custom authentication logic here
    // for example, call super.logIn(request) to establish a session.
    return super.canActivate(context);
  }

  handleRequest(err: any, user: any, info: any, context: any, status?: any) {
    // You can throw an exception based on either "info" or "err" arguments
    if (err || !user) {
      throw err || new UnauthorizedException();
    }
    return user;
  }
}

그리고 apps/gateway/api/src/app/user/user.controller.ts 에 @UseGuards를 "JwtAuthGuard"로 등록한다. 

import { Body, Controller, Delete, Get, Param, Post, Put, UseGuards } from '@nestjs/common';

import { JwtAuthGuard, User, UserService } from '@rnm/domain';

@Controller('api/gateway/user')
export class UserController {
  constructor(
    private readonly service: UserService
  ) { }

  @UseGuards(JwtAuthGuard)
  @Post()
  create(@Body() data: User): Promise<User> {
    return this.service.create(data);
  }

  @UseGuards(JwtAuthGuard)
  @Put(':id')
  updateOne(@Param('id') id: number, @Body() data: User): Promise<any> {
    return this.service.updateOne(id, data);
  }

  @UseGuards(JwtAuthGuard)
  @Get()
  findAll(): Promise<User[]> {
    return this.service.findAll();
  }

  @UseGuards(JwtAuthGuard)
  @Get(':username')
  findOne(@Param('username') username: string): Promise<User | undefined> {
    return this.service.findOne(username);
  }

  @UseGuards(JwtAuthGuard)
  @Delete(':id')
  deleteOne(@Param('id') id: string): Promise<any> {
    return this.service.deleteOne(id);
  }
}

Postman으로 테스트 한다. 

소스: https://github.com/ysyun/rnm-stack/releases/tag/ms-6

 

Release ms-6 · ysyun/rnm-stack

[ms-6] add typeorm and jwt for auth

github.com

주의: 소스가 계속 업데이트되고 있기에 master branch를 참조해도 된다.

 

 

<참조>

- NestJS에 passport 기반 JWT 적용하기 

https://docs.nestjs.kr/security/authentication

 

네스트JS 한국어 매뉴얼 사이트

네스트JS 한국, 네스트JS Korea 한국어 매뉴얼

docs.nestjs.kr

- passport local 환경설정

http://www.passportjs.org/packages/passport-local/

 

passport-local

Local username and password authentication strategy for Passport.

www.passportjs.org

- passport-jwt 환경설정

https://www.passportjs.org/packages/passport-jwt/

 

passport-jwt

Passport authentication strategy using JSON Web Tokens

www.passportjs.org

- password 암호화

https://wanago.io/2020/05/25/api-nestjs-authenticating-users-bcrypt-passport-jwt-cookies/

 

API with NestJS #3. Authenticating users with bcrypt, Passport, JWT, and cookies

1. API with NestJS #1. Controllers, routing and the module structure2. API with NestJS #2. Setting up a PostgreSQL database with TypeORM3. API with NestJS #3. Authenticating users with bcrypt, Passport, JWT, and cookies4. API with NestJS #4. Error handling

wanago.io

posted by Peter Note