W
Wasp•3w ago
NEROX

Generate User API Key for external calls

How a user in my app could create a token to make API calls from the outside?
6 Replies
kapa.ai
kapa.ai•3w ago
Hi @NEROX. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- To create a token for users to make API calls from outside your Wasp application, you'll need to implement a custom API endpoint that generates JWT (JSON Web Token) tokens. Here's how you can do it: 1. Create a Custom API Endpoint First, define a custom API endpoint in your main.wasp file: 
api generateJwt {
  fn: import { generateJwt } from "@src/server/api/generateJwt.js",
  entities: [User],
  httpRoute: (POST, "/api/generate-jwt")
}
api generateJwt {
  fn: import { generateJwt } from "@src/server/api/generateJwt.js",
  entities: [User],
  httpRoute: (POST, "/api/generate-jwt")
}
2. Implement the Token Generation Function Create a file for your token generation logic: 
// src/server/api/generateJwt.ts
import * as jwt from 'jsonwebtoken';
import { Request, Response } from 'express';

async function authenticateUser(username: string, password: string) {
  // Implement your actual user authentication logic here
  // This should verify credentials and return user info from your database
  // For demonstration, this returns a mock successful result
  return { isAuthenticated: true, userId: 'user123' };
}

export async function generateJwt(req: Request, res: Response): Promise<void> {
  const { username, password } = req.body;
  try {
    const authResult = await authenticateUser(username, password);
    if (!authResult.isAuthenticated) {
      res.status(401).json({ error: 'Invalid credentials' });
      return;
    }

    // User payload for JWT
    const userPayload = { username, userId: authResult.userId };

    // Retrieve the secret key from environment variables
    const secretKey = process.env.JWT_SECRET_KEY;

    if (!secretKey) {
      throw new Error('JWT secret key is missing');
    }

    // Token options
    const options = { expiresIn: '1h' }; // Token expires in 1 hour

    // Generate the JWT
    const token = jwt.sign(userPayload, secretKey, options);
// Send the JWT back to the client
    res.json({ token });
  } catch (error) {
    console.error('Error generating JWT token:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
}
// src/server/api/generateJwt.ts
import * as jwt from 'jsonwebtoken';
import { Request, Response } from 'express';

async function authenticateUser(username: string, password: string) {
  // Implement your actual user authentication logic here
  // This should verify credentials and return user info from your database
  // For demonstration, this returns a mock successful result
  return { isAuthenticated: true, userId: 'user123' };
}

export async function generateJwt(req: Request, res: Response): Promise<void> {
  const { username, password } = req.body;
  try {
    const authResult = await authenticateUser(username, password);
    if (!authResult.isAuthenticated) {
      res.status(401).json({ error: 'Invalid credentials' });
      return;
    }

    // User payload for JWT
    const userPayload = { username, userId: authResult.userId };

    // Retrieve the secret key from environment variables
    const secretKey = process.env.JWT_SECRET_KEY;

    if (!secretKey) {
      throw new Error('JWT secret key is missing');
    }

    // Token options
    const options = { expiresIn: '1h' }; // Token expires in 1 hour

    // Generate the JWT
    const token = jwt.sign(userPayload, secretKey, options);
// Send the JWT back to the client
    res.json({ token });
  } catch (error) {
    console.error('Error generating JWT token:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
}
3. Set Up Your JWT Secret Make sure to add a JWT secret key to your .env.server file: 
JWT_SECRET_KEY=your_very_secure_random_string
JWT_SECRET_KEY=your_very_secure_random_string
4. Using the Token for External API Calls Once a user has obtained their token, they can use it to authenticate API requests by including it in the Authorization header: 
Authorization: Bearer <token>
Authorization: Bearer <token>
Security Considerations 1. Store the JWT secret securely and consider rotating it periodically 2. Set appropriate token expiration times 3. Include only necessary user information in the token payload 4. Use HTTPS for all API communications to ensure the token is transmitted securely This approach allows your users to authenticate with your API from external applications while maintaining security. The token contains the user's identity information, which your API can verify without requiring the user to send credentials with every request. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @NEROX, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?
Filip
Filip•3w ago
Hey @NEROX, does this answer your question? Do you need human help?
NEROX
NEROXOP•3w ago
@kapa.ai How to create and use Auth on API? main.wasp // API for Chrome extension api askDocumentsApi { fn: import { askDocumentsApi } from "@src/apis.js", entities: [Document, Section], httpRoute: (POST, "/api/ask"), auth: true } apis.js // API endpoint for the Chrome extension export const askDocumentsApi = async (req, res, context) => { try { // Check if user is authenticated if (!context.user) { return res.status(401).json({ error: "Unauthorized. Please log in to use this API." }); }
kapa.ai
kapa.ai•3w ago
Let me check the knowledge base for you again. One moment! :books: ---------------------- To create and use authentication on an API in Wasp, you can follow these steps: 1. Define the API in main.wasp In your main.wasp file, you define the API endpoint and specify that authentication is required by setting auth: true. This ensures that only authenticated users can access the API. 
// API for Chrome extension
api askDocumentsApi {
  fn: import { askDocumentsApi } from "@src/apis.js",
  entities: [Document, Section],
  httpRoute: (POST, "/api/ask"),
  auth: true
}
// API for Chrome extension
api askDocumentsApi {
  fn: import { askDocumentsApi } from "@src/apis.js",
  entities: [Document, Section],
  httpRoute: (POST, "/api/ask"),
  auth: true
}
2. Implement the API Function In your apis.js file, implement the API function. Use the context.user object to check if the user is authenticated. If context.user is not present, return a 401 Unauthorized response. 
// API endpoint for the Chrome extension
export const askDocumentsApi = async (req, res, context) => {
  try {
    // Check if user is authenticated
    if (!context.user) {
      return res.status(401).json({ error: "Unauthorized. Please log in to use this API." });
    }

    // Your API logic here
    // ...

  } catch (error) {
    console.error('Error in askDocumentsApi:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
};
// API endpoint for the Chrome extension
export const askDocumentsApi = async (req, res, context) => {
  try {
    // Check if user is authenticated
    if (!context.user) {
      return res.status(401).json({ error: "Unauthorized. Please log in to use this API." });
    }

    // Your API logic here
    // ...

  } catch (error) {
    console.error('Error in askDocumentsApi:', error);
    res.status(500).json({ error: 'Internal server error' });
  }
};
3. Use the API When making requests to this API, ensure that the request includes a valid JWT token in the Authorization header. This token is used to authenticate the user and is typically obtained during the login process. 
Authorization: Bearer <token>
Authorization: Bearer <token>
Summary By setting auth: true in your API declaration, Wasp automatically checks for a valid JWT token in the request headers and populates the context.user object if the token is valid. This allows you to easily protect your API endpoints and ensure that only authenticated users can access them. For more details on setting up authentication in Wasp, you can refer to the Wasp Auth Overview. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @NEROX, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?
NEROX
NEROXOP•3w ago
@kapa.ai How to integrate JWT with auth:true API in wasp?
kapa.ai
kapa.ai•3w ago
Let me check the knowledge base for you again. One moment! :books: ---------------------- When you set auth: true in your API declaration in Wasp, JWT integration is handled automatically for you. Here's how it works and how to use it: How JWT Works with auth: true in Wasp When you define an API with auth: true, Wasp automatically: 1. Looks for a JWT token in the Authorization header of incoming requests 2. Verifies the token using the JWT secret 3. If valid, populates the context.user object with the authenticated user's information 4. If invalid or missing, the request is considered unauthenticated Setting Up JWT Authentication 1. Configure Auth in your Wasp file 
app myApp {
  wasp: { version: "^0.13.0" },
  title: "My App",
  auth: {
    userEntity: User,
    methods: {
      // Choose one or more auth methods
      usernameAndPassword: {},
      email: {},
      // Social auth options
      google: {},
      gitHub: {},
      keycloak: {}
    },
    onAuthFailedRedirectTo: "/login"
  }
}
app myApp {
  wasp: { version: "^0.13.0" },
  title: "My App",
  auth: {
    userEntity: User,
    methods: {
      // Choose one or more auth methods
      usernameAndPassword: {},
      email: {},
      // Social auth options
      google: {},
      gitHub: {},
      keycloak: {}
    },
    onAuthFailedRedirectTo: "/login"
  }
}
2. Set up your JWT Secret Wasp uses an environment variable called JWT_SECRET for signing and verifying tokens. Make sure to set this in your .env.server file: 
JWT_SECRET=your_secure_random_string
JWT_SECRET=your_secure_random_string
3. Define your API with auth enabled 
api secureEndpoint {
  fn: import { secureEndpoint } from "@src/apis",
  httpRoute: (POST, "/api/secure"),
  entities: [User],
  auth: true
}
api secureEndpoint {
  fn: import { secureEndpoint } from "@src/apis",
  httpRoute: (POST, "/api/secure"),
  entities: [User],
  auth: true
}
4. Access the authenticated user in your API handler 
export const secureEndpoint = async (req, res, context) => {
  // context.user is automatically populated if the JWT is valid
  if (!context.user) {
    return res.status(401).json({ error: "Unauthorized" });
  }
  
  // Access user information
  const userId = context.user.id;
  
  // Your API logic here
  // ...
  
  return res.json({ success: true, userId });
};
export const secureEndpoint = async (req, res, context) => {
  // context.user is automatically populated if the JWT is valid
  if (!context.user) {
    return res.status(401).json({ error: "Unauthorized" });
  }
  
  // Access user information
  const userId = context.user.id;
  
  // Your API logic here
  // ...
  
  return res.json({ success: true, userId });
};
Making Authenticated Requests When calling your API from external clients (like a Chrome extension), include the JWT token in the Authorization header: 
Authorization: Bearer <token>
Authorization: Bearer <token>
The token should be obtained during the user login process, either through your custom JWT generation endpoint or through Wasp's built-in auth system. Error Handling If JWT token verification fails, you can customize how your application responds. By default, unauthenticated requests to APIs with auth: true will receive a 401 Unauthorized response. For more information on authentication in Wasp, you can refer to the Auth Overview documentation. Auth Overview Custom HTTP API Endpoints ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ---------------------- Sorry @NEROX, I seem to be having a bit of trouble. Don't worry though, I've pinged my support and they will try to fix me up! :technologist: Perhaps try again in 15mins?

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