NestJS passport authentication returns 401 when using email for authentication - authentication

Question

I have a problem that seems to be not that uncommon, but the solutions that I found did not work in my project.
What I want to do is a simple authentication using passport as this tutorial suggests: https://docs.nestjs.com/techniques/authentication
I followed this tutorial all along and at first it worked. Later I decided to use the users E-Mail and password as authentication instead of a username. So I changed my variable names and parameters in the authentication process to email and that was the point where everything broke apart. Am I missing something here?
auth.module.ts
import {Module} from '#nestjs/common';
import {UsersModule} from "../users/users.module";
import {AuthService} from "./services/auth.service";
import {PassportModule} from "#nestjs/passport";
import {LocalStrategy} from "./strategies/local.strategy";
import {AuthController} from "./controllers/auth.controller";
import {JwtModule} from "#nestjs/jwt";
import {jwtConstants} from "./constants";
import {JwtStrategy} from "./strategies/jwt.strategy";
import {EncryptionModule} from "../encryption/encryption.module";
#Module({
imports: [
UsersModule,
EncryptionModule,
PassportModule.register({defaultStrategy: 'jwt'}),
JwtModule.register({
secret: jwtConstants.secret,
signOptions: {
expiresIn: '30s'
}
})
],
providers: [
AuthService,
LocalStrategy,
JwtStrategy
],
controllers: [
AuthController
]
})
export class AuthModule {
}
controllers/auth.controller.ts
import {Controller, Get, Post, Request, UseGuards} from '#nestjs/common';
import {AuthService} from "../services/auth.service";
import {JwtAuthGuard} from "../guards/jwt-auth.guard";
import {LocalAuthGuard} from "../guards/local-auth.guard";
#Controller('auth')
export class AuthController {
constructor(private authService: AuthService) {
}
#UseGuards(LocalAuthGuard)
#Post('login')
login(#Request() req) {
return this.authService.login(req.user);
}
#UseGuards(JwtAuthGuard)
#Get('profile')
getProfile(#Request() req) {
return req.user;
}
}
services/auth.service.ts
import {Injectable} from '#nestjs/common';
import {UsersService} from "../../users/services/users.service";
import {User} from "../../users/interfaces/user.interface";
import {JwtService} from "#nestjs/jwt";
import {JwtPayloadDto} from "../models/jwt-payload.dto";
import {EncryptionService} from "../../encryption/services/encryption.service";
#Injectable()
export class AuthService {
constructor(private usersService: UsersService,
private jwtService: JwtService,
private encryptionService: EncryptionService) {
}
async validateUser(email: string, pass: string): Promise<User | undefined> {
/**
* The findOne-method sends a database query
* to my mongodb via mongoose.
* I don't think it's necessary to post the UserService here, is it?
*/
const user: User = await this.usersService.findOne(email);
return this.encryptionService.compare(pass, user.password).then((result) => {
if (result) {
return user;
}
return undefined;
});
}
async login(user: User) {
const payload: JwtPayloadDto = {
email: user.email,
sub: user.id
}
return {
accessToken: this.jwtService.sign(payload)
};
}
}
strategies/local.strategy.ts
import {Injectable, UnauthorizedException} from "#nestjs/common";
import {PassportStrategy} from "#nestjs/passport";
import {Strategy} from "passport-local";
import {AuthService} from "../services/auth.service";
#Injectable()
export class LocalStrategy extends PassportStrategy(Strategy) {
constructor(private authService: AuthService) {
super();
}
async validate(email: string, password: string): Promise<any> {
const user = await this.authService.validateUser(email, password);
if (!user) {
throw new UnauthorizedException();
}
return user;
}
}
guards/local-auth.guard.ts
import {Injectable} from "#nestjs/common";
import {AuthGuard} from "#nestjs/passport";
#Injectable()
export class LocalAuthGuard extends AuthGuard('local') {
}
According to this question I found out that the validate-methods signature has to have the same parameter names as the request payloads keys.
For debugging purposes I have put a console.log()-call on the first line of my validate-method in the strategies/local.strategy.ts but it seems as it does not get called at all.
Thanks for any answer in advance.
Have a good one!

Answer 1

for me, when create LocalStrategy, I passed {usernameField: 'email'} to ParentClass.
If you want to check user authenticate with custom column like 'email', try pass it.
my user.entity.ts:
#Entity()
export class User {
#PrimaryGeneratedColumn()
id: number;
#Column({ unique: true })
email: string;
#Column()
name: string;
}
my local.strategy.ts:
#Injectable()
export class LocalStrategy extends PassportStrategy(Strategy) {
constructor(private authService: AuthService) {
super({ usernameField: 'email' });
}
async validate(email: string, password: string): Promise<User> {
console.log(email, password); // it works
}
}

Answer 2

Well, I solved it myself. 5 hours of debugging wasted!
Turned out that somehow my Postman did not send the Content-Type header with the request. Restarting Postman fixed it.