sunny-green•2y ago

How can I handle a 401 unauthorized response to logout the user from the app?

I'm asking if refine has a way to handle when you have a 401 response in your dataProvider, and make the app run the logout method of the AuthProvider or if I have to handle it in the axios instance. I'm asking this because I dont want the check function of the AuthProvider validating the jwt token, because that would imply that I have to save the JWT secret in a env variable in the client, and that is not secure. Thanks!

31 Replies

kapa.ai•2y ago

Hi @jaoc1811. I'm kapa.ai, your friendly support bot. I will try to answer your question by searching through the knowledge base. :wave: ---------------------- Yes, Refine provides a way to handle 401 responses in your dataProvider and trigger the logout method of the AuthProvider. You can achieve this by implementing the onError method in your AuthProvider. This method is called when you get an error response from the API. Here is an example of how you can implement the onError method to log out the user if the API returns a 401 error:

import { AuthBindings } from "@refinedev/core";  
  
const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
  
 return {};  
 },  
 // ---  
};

import { AuthBindings } from "@refinedev/core";  
  
const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
  
 return {};  
 },  
 // ---  
};

import { useOnError } from "@refinedev/core";  
  
const { mutate } = useOnError();  
  
fetch("<http://example.com/payment">)  
 .then(() => console.log("Success"))  
 .catch((error) => mutate(error));

import { useOnError } from "@refinedev/core";  
  
const { mutate } = useOnError();  
  
fetch("<http://example.com/payment">)  
 .then(() => console.log("Success"))  
 .catch((error) => mutate(error));

In this example, if the fetch request fails, the mutate method of the useOnError hook is called with the error as an argument. This will trigger the onError method of the AuthProvider. For more information, refer to the useOnError documentation→ (https://refine.dev/docs/api-reference/core/hooks/authentication/useOnError/) Regarding your concern about storing the JWT secret in an environment variable on the client side, you're correct that this is not secure. The JWT secret should be kept on the server side and never exposed to the client. The client should only store the JWT token, not the secret. ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2y ago

<@110864105035808768> kapa.ai is still learning and improving, please let us know how it did by reacting below

sunny-greenOP•2y ago

@kapa.ai I'm trying with the onError function, but i'm getting 401 responses and the function is not running @kapa.ai

kapa.ai•2y ago

Let me check the knowledge base for you. One moment! :books: Sorry @jaoc1811, I seem to be having a bit of trouble. Don't worry though, I've pinged my supprt and they will try to fix me up! :technologist: Perhaps try again in 15mins?

sunny-greenOP•2y ago

@kapa.ai I'm trying with the onError function, but i'm getting 401 responses and the function is not running

kapa.ai•2y ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The onError function should be triggered when a 401 response is received. If it's not working as expected, there might be an issue with how it's implemented or how the error is being handled in your dataProvider. Here's a basic example of how the onError function should be implemented in your authProvider:

const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
 return {};  
 },  
 // ---  
};

const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
 return {};  
 },  
 // ---  
};

In this example, if the API returns a 401 or 403 error, the onError method will return an object with logout: true and redirectTo: "/login". This will cause the useOnError hook to call the logout method and redirect the user to the login page. If you're still having issues, you might want to check how you're handling errors in your dataProvider. The error object that's passed to the onError method should contain a status property with the HTTP status code of the error response. For more information, refer to the onError documentation→ (https://refine.dev/docs/api-reference/core/providers/auth-provider) and the useOnError documentation→ (https://refine.dev/docs/api-reference/core/hooks/authentication/useOnError/). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2y ago

<@110864105035808768> kapa.ai is still learning and improving, please let us know how it did by reacting below

sunny-greenOP•2y ago

@kapa.ai do i have to use the useOnError? o the onError should be executed automatically?

kapa.ai•2y ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The onError method in your authProvider should be executed automatically when an error response is received from the API. You don't necessarily need to use the useOnError hook for this to happen. The useOnError hook is used to manually trigger the onError method from your authProvider. It's useful when you want to handle errors in a specific way in certain parts of your application. For example, you might want to use the useOnError hook to handle errors from a fetch request:

import { useOnError } from "@refinedev/core";  
  
const { mutate } = useOnError();  
  
fetch("<http://example.com/payment">)  
 .then(() => console.log("Success"))  
 .catch((error) => mutate(error));

import { useOnError } from "@refinedev/core";  
  
const { mutate } = useOnError();  
  
fetch("<http://example.com/payment">)  
 .then(() => console.log("Success"))  
 .catch((error) => mutate(error));

In this example, if the fetch request fails, the mutate method of the useOnError hook is called with the error as an argument. This will trigger the onError method of the AuthProvider. However, for general error handling (like handling 401 responses), you should be able to rely on the onError method in your authProvider. For more information, refer to the onError documentation→ (https://refine.dev/docs/api-reference/core/providers/auth-provider) and the useOnError documentation→ (https://refine.dev/docs/api-reference/core/hooks/authentication/useOnError/). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2y ago

<@110864105035808768> kapa.ai is still learning and improving, please let us know how it did by reacting below

sunny-greenOP•2y ago

@kapa.ai can you give me a error response example? because the onError function is not running

kapa.ai•2y ago

Let me check the knowledge base for you. One moment! :books: ---------------------- The onError function in your authProvider should be triggered when an error response is received from the API. The error object that's passed to the onError method should contain a status property with the HTTP status code of the error response. Here's an example of how an error response might look:

{
  status: 401,
  message: "Unauthorized",
  // ...other properties...
}

{
  status: 401,
  message: "Unauthorized",
  // ...other properties...
}

In this case, if your onError method is implemented like this:

const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
 return {};  
 },  
 // ---  
};

const authProvider: AuthBindings = {  
 // ---  
 onError: async (error) => {  
 if (error.status === 401 || error.status === 403) {  
 return {  
 logout: true,  
 redirectTo: "/login",  
 error,  
 };  
 }  
 return {};  
 },  
 // ---  
};

Then the onError method should be triggered when a 401 or 403 error response is received, and it should return an object with logout: true and redirectTo: "/login". If the onError method is not being triggered as expected, there might be an issue with how the error is being handled in your dataProvider. Make sure that the error object that's being passed to the onError method contains a status property with the HTTP status code of the error response. For more information, refer to the onError documentation→ (https://refine.dev/docs/api-reference/core/providers/auth-provider) and the useOnError documentation→ (https://refine.dev/docs/api-reference/core/hooks/authentication/useOnError/). ---------------------- Note: you can ask me a follow up question by @ mentioning me again :speech_balloon: ----------------------

kapa.ai•2y ago

<@110864105035808768> kapa.ai is still learning and improving, please let us know how it did by reacting below

sunny-greenOP•2y ago

nope, onError is not been called

flat-fuchsia•2y ago

I am having the same issue, were you able to solve it? I am storing my access token on local storage and then validating the JWT using a library that connects to my user pool / client id (using AWS cognito), so it should be secure, but I cannot get my logout function to run after the onError returns the logout: true

sunny-greenOP•2y ago

Hi! the onError function is not running?

flat-fuchsia•2y ago

my onError function is running fine, and it determines that the JWT token is expired, and then it returns this:

 return {
  error: {
    message: "Unauthorized",
    name: "Token not valid",
  },
  logout: true,
  redirectTo: "/login",
};

 return {
  error: {
    message: "Unauthorized",
    name: "Token not valid",
  },
  logout: true,
  redirectTo: "/login",
};

But my logout function, like this:

logout: async () => {
    console.log("CALLING LOGOUT");
    await Auth.signOut();
    return {
      success: true,
      redirectTo: "/login",
    };
  },

logout: async () => {
    console.log("CALLING LOGOUT");
    await Auth.signOut();
    return {
      success: true,
      redirectTo: "/login",
    };
  },

Never gets ran

sunny-greenOP•2y ago

oh, I see What was happening to me was that the onError function was never running, and I found out that it wasn't running because the component was autogenerated by infencerer, after I put my own code in the component the onError function was working fine. It is really strange that your logout function is not running, that is the exactly purpose of the logout field in the return of the onError

flat-fuchsia•2y ago

oh yea that makes sense, I am not using the inferencer in my case, just built a simple page to list items yea im not sure if I am supposed to use that useOnError hook or something, that would be weird considering this is supposed to simplify all that. Also, then I would need to use that hook for every possible component, which doesn't seem right

sunny-greenOP•2y ago

I should not be necessary to use the hook. Actually I just tried and my onError function runs the logout function fine

sunny-greenOP•2y ago

sunny-greenOP•2y ago

are you sure that the onError function is running? oh wait, I didn't check it right. Let me check again Yes, I checked it again, and it works

flat-fuchsia•2y ago

Yes this is my console log, it indentifies the token is expired, and then returns the logout, but never actually logs out

sunny-greenOP•2y ago

these are my onError and logout functions

onError: async (error) => {
    const status = error.response.status;
    if (status === 401 || status === 403) {
      return {
        logout: true,
        redirectTo: "/login",
        error: {
          name: "Unauthorized",
          message: "Login again",
        },
      };
    }
    return { error };
  },

onError: async (error) => {
    const status = error.response.status;
    if (status === 401 || status === 403) {
      return {
        logout: true,
        redirectTo: "/login",
        error: {
          name: "Unauthorized",
          message: "Login again",
        },
      };
    }
    return { error };
  },

  logout: async () => {
    console.log("LOGOUT RUNNING");

    localStorage.removeItem("auth");
    return {
      success: true,
      redirectTo: "/login",
    };
  },

  logout: async () => {
    console.log("LOGOUT RUNNING");

    localStorage.removeItem("auth");
    return {
      success: true,
      redirectTo: "/login",
    };
  },

flat-fuchsia•2y ago

hmm, i suppose the only difference I have is I have my logic in a try/catch block, is that stopping the return too early?

onError: async (error) => {
    // if the error response contains an unauthorized message, then we need to verify that the users access token is still valid
    // otherwise, we need to log the user out and redirect them to the login page so they can log back in and get a new access token
    if (error.response.status === 401) {
      const accessToken = localStorage.getItem("token");
      if (!accessToken) {
        return {
          logout: true,
          redirectTo: "/login",
          error: {
            message: "Unauthorized",
            name: "Token not found",
          },
        };
      }
      const verifier = CognitoJwtVerifier.create({
        userPoolId: config.cognito.USER_POOL_ID,
        tokenUse: "access",
        clientId: config.cognito.USER_POOL_CLIENT_ID,
      });
      try {
        const payload = await verifier.verify(accessToken);
        return { error };
      } catch (error) {
        console.log("returning redirect to login", error);
        return {
          logout: true,
          redirectTo: "/login",
          error: {
            message: "Unauthorized",
            name: "Token not valid",
          },
        };
      } finally {
        return { error };
      }
    }
    // TODO: Handle more status code errors as they come up
    return { error };
  },

onError: async (error) => {
    // if the error response contains an unauthorized message, then we need to verify that the users access token is still valid
    // otherwise, we need to log the user out and redirect them to the login page so they can log back in and get a new access token
    if (error.response.status === 401) {
      const accessToken = localStorage.getItem("token");
      if (!accessToken) {
        return {
          logout: true,
          redirectTo: "/login",
          error: {
            message: "Unauthorized",
            name: "Token not found",
          },
        };
      }
      const verifier = CognitoJwtVerifier.create({
        userPoolId: config.cognito.USER_POOL_ID,
        tokenUse: "access",
        clientId: config.cognito.USER_POOL_CLIENT_ID,
      });
      try {
        const payload = await verifier.verify(accessToken);
        return { error };
      } catch (error) {
        console.log("returning redirect to login", error);
        return {
          logout: true,
          redirectTo: "/login",
          error: {
            message: "Unauthorized",
            name: "Token not valid",
          },
        };
      } finally {
        return { error };
      }
    }
    // TODO: Handle more status code errors as they come up
    return { error };
  },

nvm it should return from the function

sunny-greenOP•2y ago

maybe those return { error } are the problem? because that "error" hasn't the onErrorResponse structure

type OnErrorResponse = {
    redirectTo?: string;
    logout?: boolean;
    error?: Error;
};

type OnErrorResponse = {
    redirectTo?: string;
    logout?: boolean;
    error?: Error;
};

flat-fuchsia•2y ago

well all of those attributes for the return error are optional,. For all other errors I just pass the error because I don't know how to handle them yet, but for an expired token it's returning :

return {
  logout: true,
  redirectTo: "/login",
  error: {
    message: "Unauthorized",
    name: "Token not valid",
  },

return {
  logout: true,
  redirectTo: "/login",
  error: {
    message: "Unauthorized",
    name: "Token not valid",
  },

In my case where the token is expired

sunny-greenOP•2y ago

wow, I'm trying to see what could be wrong but I can't find anything ok, try this take out the finally statement from the try catch and try I understand that when you have a finally statement in a try catch, the return in the try or catch is saved temporally but the finally's overrides them so maybe you're returning always { error } instead of the complete json

flat-fuchsia•2y ago

Brilliant! That fixed it! I totally forgot about that lol, thank you!

sunny-greenOP•2y ago

Nice!

flat-fuchsia•2y ago

i was treating that as a default similar to a switch/case

How can I handle a 401 unauthorized response to logout the user from the app?

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