我目前正在将Passport.js的JWT身份验证实现到NestJS应用程序中。
在某些GraphQL解析器中,我需要访问当前已验证的用户。我知道通行证会将经过身份验证的用户附加到请求对象(至少我希望这是正确的),但是我不知道如何访问解析器中的请求对象。
我关注了问题https://github.com/nestjs/nest/issues/1326和问题中提到的链接https://github.com/ForetagInc/fullstack-boilerplate/tree/master/apps/api/src/app/auth。我在GraphQL解析器方法中看到一些使用@Res() res: Request
作为方法参数的代码,但是对于undefined
,我总是得到res
。
这些是我目前的实现方式:
GQLAuth
import { Injectable, ExecutionContext } from '@nestjs/common';
import { AuthGuard } from '@nestjs/passport';
import { GqlExecutionContext } from '@nestjs/graphql';
import { ExecutionContextHost } from '@nestjs/core/helpers/execution-context-host';
import { AuthenticationError } from 'apollo-server-core';
@Injectable()
export class GqlAuthGuard extends AuthGuard('jwt') {
canActivate(context: ExecutionContext) {
const ctx = GqlExecutionContext.create(context);
const { req } = ctx.getContext();
console.log(req);
return super.canActivate(new ExecutionContextHost([req]));
}
handleRequest(err: any, user: any) {
if (err || !user) {
throw err || new AuthenticationError('GqlAuthGuard');
}
return user;
}
}
需要访问当前用户的解析器
import { UseGuards, Req } from '@nestjs/common';
import { Resolver, Query, Args, Mutation, Context } from '@nestjs/graphql';
import { Request } from 'express';
import { UserService } from './user.service';
import { User } from './models/user.entity';
import { GqlAuthGuard } from '../auth/guards/gql-auth.guard';
@Resolver(of => User)
export class UserResolver {
constructor(private userService: UserService) {}
@Query(returns => User)
@UseGuards(GqlAuthGuard)
whoami(@Req() req: Request) {
console.log(req);
return this.userService.findByUsername('aw');
}
}
智威汤逊策略
import { Injectable, UnauthorizedException } from '@nestjs/common';
import { PassportStrategy } from '@nestjs/passport';
import { ExtractJwt, Strategy } from 'passport-jwt';
import { AuthService } from './auth.service';
import { JwtPayload } from './interfaces/jwt-payload.interface';
@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
constructor(private readonly authService: AuthService) {
super({
jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
secretOrKey: process.env.SECRET,
});
}
async validate(payload: JwtPayload) {
const user = await this.authService.validateUser(payload);
if (!user) {
throw new UnauthorizedException();
}
return user;
}
}
授权和创建JWT令牌可以正常工作。 GraphQL Guard也适用于不需要访问用户的方法。但是对于需要访问当前经过身份验证的用户的方法,我看不到获得它的方法。
有没有办法完成这样的事情?
答案 0 :(得分:3)
与往常一样,在完成数小时/天的搜索后,仍未找到解决方案,最后向StackOverflow发布了一个问题,您将在几分钟之内找到答案...
https://github.com/nestjs/graphql/issues/48#issuecomment-420693225为我指明了创建用户装饰器
的正确方向// user.decorator.ts
import { createParamDecorator } from '@nestjs/common';
export const User = createParamDecorator(
(data, [root, args, ctx, info]) => ctx.req.user,
);
然后在我的解析器方法中使用它:
import { User as CurrentUser } from './user.decorator';
@Query(returns => User)
@UseGuards(GqlAuthGuard)
whoami(@CurrentUser() user: User) {
console.log(user);
return this.userService.findByUsername(user.username);
}
现在一切正常。因此,此答案的全部功劳归于https://github.com/cschroeter
答案 1 :(得分:1)
另一种方法是使用您使用的任何程序包验证Web令牌,然后创建装饰器get-user.decorator.ts
import { createParamDecorator, ExecutionContext } from '@nestjs/common';
import { GqlExecutionContext } from '@nestjs/graphql';
export const GetUser = createParamDecorator((data, context: ExecutionContext) => {
const ctx = GqlExecutionContext.create(context).getContext();
return ctx.user
});
然后在解析器中,可以使用此装饰器(@GetUser()用户:User) 访问用户
答案 2 :(得分:0)
希望我能在这里获得任何荣誉,我只是传递了NestJS Zero To Hero(绝对很棒的顺便说一句)课程中的信息。
对于NestJS 7:
// get-user.decorator.ts
import { createParamDecorator, ExecutionContext } from '@nestjs/common';
import { User } from '../../user/entity/user.entity';
export const GetAuthenticatedUser = createParamDecorator((data, ctx: ExecutionContext): User => {
const req = ctx.switchToHttp().getRequest();
return req.user;
});
您可以根据自己的喜好实现此目的。我有一个auth.controller
,看起来像这样:
// auth.controller.ts
import { GetAuthenticatedUser } from './decarator/get-user.decorator';
...
@Controller('api/v1/auth')
export class AuthController {
constructor(private authService: AuthService) {
//
}
...
/**
* Get the currently authenticated user.
*
* @param user
*/
@Post('/user')
@UseGuards(AuthGuard())
async getAuthenticatedUser(@GetAuthenticatedUser() user: User) {
console.log('user', user);
}
结果是这样的:
// console.log output:
user User {
id: 1,
email: 'email@test.com',
...
}
答案 3 :(得分:0)
import { createParamDecorator, ExecutionContext } from '@nestjs/common';
import { GqlExecutionContext } from '@nestjs/graphql';
export const CurrentUser = createParamDecorator(
(data, context: ExecutionContext) => {
const ctx = GqlExecutionContext.create(context).getContext();
return ctx.req.user;
},
);