jwt-decode | Decode JWT tokens ; useful for browser applications | Authentication library
kandi X-RAY | jwt-decode Summary
kandi X-RAY | jwt-decode Summary
IMPORTANT: This library doesn't validate the token, any well formed JWT can be decoded. You should validate the token in your server-side logic by using something like express-jwt, koa-jwt, Owin Bearer JWT, etc. If you've previously imported the library as import * as jwt_decode from 'jwt-decode', you'll have to change your import to import jwt_decode from 'jwt-decode';.
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- Polyfill from UTF - 8 characters .
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- Decode a JWT token .
- Decodes a base64 encoded string .
- InvalidTokenError error .
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Trending Discussions on jwt-decode
QUESTION
I have two functions, one is a page that calls for data from a function that gets data to and from a server.
The function that gets data to and from a server:
...ANSWER
Answered 2022-Apr-07 at 14:06You should not use async
in useEffect
. This is not supported.
I am not sure why you can't use getProtectedAsse(...).then(res=> {})
.
But if you want to run getProtectedAsse() synchronously, try like the following instead.
QUESTION
I am trying to write a function that will handle getting data to and from a server. This function takes the url to contact and uses the token to authorize itself against the server. This function is quite long. I would therefore want every other page in my react app to call this function with the needed url and then let this function handle everything else. I therefore need each page to await this function but I get "Error: Invalid hook call" no matter what I try.
This is the function that handles post requests to the server:
...ANSWER
Answered 2022-Apr-07 at 09:58Its because you are using useContext() hook inside getProtectedAsset() function. Instead of using useContext inside getProtectedAsset try to pass user as parameter like url to the function.
QUESTION
the goal is to use Cypress for component testing and e2e testing mainly. Install and configure all Cypress correctly, configure Cypress in the 'cypress open' script to open E2E related tests and configure the 'cypress open-ct' script for component tests, all settings work very well.
ProblemThe project is already ready and I have absolute folders configuration, when I import a component from '~/components' I am accessing 'src/components', I am not able to make the proper settings to be able to access the absolute folders because when I run the cypress open script -ct doesn't seem to run 'file:preprocessor', where you need to run it to run the webpack where you have the absolute folder settings.
I tried several alternatives and this was the one that worked the best because when I run the 'cypress open' script cypress executes 'file:preprocessor' it applies the webpack settings and if I try to import a component using '~/component/InputDate' it works , however 'cypress open' is for E2E tests, I can't run unit tests through this script.
I can be wrong about the cypress open script not running component tests correctly but I'm looking for a solution to the big problem that is these absolute folders.
I tried the tsconfig.json files configuration solution but I couldn't make it work because I use it in the jsconfig.json project, I tried to use tsconfig.json I used the 'tsconfig-paths' package and got no result.
cypress/plugins/index.js ...ANSWER
Answered 2022-Mar-21 at 21:05I managed to do the following solution:
plugins/index.jsQUESTION
My application backend runs on Django Rest Framework and and frontend on Angular.
I'm already using JWT for authentication and that works fine.
My requirement is to call a specific API (Not authentication related), which gets me some details in plain text. I don't want it in plain text, So I was thinking I would create a JWT Token and send it in response and decode it in frontend using the secret key.
I achieved the decoding part using jwt-decode without the secret. My concern is, if an attacker intercepts my response and modifies the token, How do I tackle that situation?
This is how I decoded the token in angular
...ANSWER
Answered 2022-Mar-09 at 08:37I don't want it in plain text, So I was thinking I would create a JWT Token and send it in response and decode it in frontend using the secret key.
A JWT token is usually plain-text. There are two types of JWTs - JWS (signed JWTs) and JWE (encrypted JWTs). The latter has the content encrypted, so no one can read it unless they have the key for decryption. Encryption is hard to configure and manage, though, so JWEs are not used very often. You need a really strong reason to be using JWEs. Signed JWTs (JWS) are more common. In fact, when people use the term JWT, they usually mean JWS. A signed JWT is integrity-protected. Using the signature you can verify that the JWT hasn't been changed by an attacker, but they are plain-text. Anyone can read the content of the JWT, they just can't modify it.
Also remember that an Angular app has all of its code available to users, which means it can't hold any secrets. If you put a secret in your Angular app, then anyone will be able to read that secret and use it to decrypt your JWEs, or forge new JWSs, if you're using symmetric signing (e.g. the HS256 algorithm).
I achieved the decoding part using jwt-decode without the secret. My concern is, if an attacker intercepts my response and modifies the token, How do I tackle that situation?
If you're concerned about a Man-in-the-middle attack, so that someone will modify the response from your server, then all you need is an HTTPS connection. If you connect to your API using HTTPS, then you're sure that no one modified the response, nor read it.
If you're concerned that your response will get modified after HTTPS is terminated (e.g. a malicious code running in the browser), then you can use JWS to ensure the integrity of the response. You just have to remember to use asymmetric signing, so that the Angular app only keeps the public key.
I don't know which library for JWTs are you using in Angular, but I think all of them are capable of verifying signatures, so that shouldn't be a problem.
QUESTION
TL:DR: replace jsonwebtoken
with jwt-decode
I have had some trouble with upgrading my existing react app to the latest version. Every time I do I get the following errors
...ANSWER
Answered 2022-Jan-26 at 09:46jsonwebtoken
is a Node.js module, your previous use of it in a react application relied upon a polyfill of the Node.js std modules. This most likely a) relied on slow js cryptography that isn't maintained anymore and lacks feature parity with Node's crypto and b) increased your js bundle size considerably. Updating react likely meant updating webpack which no longer defaults to using the questionable crypto polyfill.
It is better to rely on modules made for either browsers or "universal", you can discover such modules amongst the ones listed on jwt.io under "JavaScript". Out of the ones listed there, jose uses purely available Web APIs.
QUESTION
I have upgraded my angular to angular 13. when I run to build SSR it gives me following error.
...ANSWER
Answered 2022-Jan-22 at 05:29I just solve this issue by correcting the RxJS version to 7.4.0
. I hope this can solve others issue as well.
QUESTION
I am using expo for my app and i randomly stated getting this error in my cli.This error doesn't stop the app from running. I searched around and haven't seen anyone with this error. Could it be due to the way my app.json/app.config file was setup? I do not want to remove the plugin sections because I need it. Thanks in advance
app.config.js
...ANSWER
Answered 2021-Dec-27 at 07:15I had the exact same issue and stumbled upon this while searching for solutions. After some digging, it turns out you have to change all of the plugin permission values to strings.
QUESTION
The app has been running successfully in production for a year, and works perfectly on MacOS localhost. Recently needed to set up the app to run on Windows 10 localhost, and after resolving all the errors, now the app boots up, requests seem to get through, however, only the '/' page actually renders, all the other routes don't render and stay at a blank page.
What could be a reason?
During initial setup, I ran into an issue with windows-build-tools and a missing Python, which I ended up eventually resolving by installing everything through Chocolatey. Could this be related?
Node version on Windows is newer than one specified in project, could this cause this?
I'm happy to provide more details and perform any experiments any of you recommend or suggest. My own guess is that it is either something related to setup on Windows or some issue with the packages on Windows.
The app is booted up through a package.json
start script:
ANSWER
Answered 2021-Dec-14 at 19:01Node version could be a problem. That windows-build-tools is required for the installation indicates there's binary dependency that is potentially incompatible with current Node version. Binary NPM dependencies usually provide a subset of precompiled binaries for a specific package version, where a combination of platform and Node.js version that can be considered safe or supported. For any other combination, binary package needs to be compiled for current platform with build tools. This doesn't always mean that the package is incompatible but this is common.
For example, node-sass
(doesn't seem to be used here) has different versions that correspond to specific Node.js versions and provides precompiled binaries for a supported subset; for unsupported Node.js version it falls back to compilation during installation process and most likely fails.
It's unknown which dependency causes this problem in this case, this needs to be reviewed in npm/yarn logs.
In order to avoid this situation, Node version could be matched with old one. Project dependencies need to be freshly installed because node_modules in use has been already tied to currently used Node version.
QUESTION
import { useState, useEffect } from "react";
import LoginModal from "./LoginModal";
import { NavLink, useLocation, useNavigate } from "react-router-dom";
import { useDispatch } from "react-redux";
import { userLogout } from "../Features/User/userSlice";
import decode from "jwt-decode";
const Header = ({ toggleModalShow, showModal }) => {
const [burgerAnimation, setBurgerAnimation] = useState(false);
const [user, setUser] = useState();
const location = useLocation();
const dispatch = useDispatch();
const navigate = useNavigate();
// for showing login/sign up modal
const showModalButton = () => {
toggleModalShow();
};
const handleBurgerAnimation = () => {
setBurgerAnimation(!burgerAnimation);
};
const handleLogout = async (id) => {
await dispatch(userLogout({ id, navigate, dispatch }));
setUser(null);
};
const burgerListItemAnimation = ...
const burgerIconAnimation = ...
const guestHeader = (
...
);
const userHeader = (
...
);
useEffect(() => {
if (localStorage.getItem("user") && !user) {
setUser(JSON.parse(localStorage.getItem("user")));
}
const accessToken = user?.accessToken;
if (accessToken) {
const decodedAccessToken = decode(accessToken);
if(decodedAccessToken.exp * 1000 < new Date().getTime()){
handleLogout(user.user._id);
}
console.log(decodedAccessToken);
}
}, [location, user]);
return (
...
);
};
export default Header;
...ANSWER
Answered 2021-Dec-02 at 23:36If you keep handleLogout
external to the useEffect
hook it should be listed as a dependency as it is referenced within the hook's callback.
If i put
handleLogout
touseEffect
dependencies warning doesn't change.
I doubt the warning is the same. At this point I would expect to you to see the warning change to something like "the dependency handleLogout
is redeclared each render cycle, either move it into the useEffect
hook or memoize with useCallback
..." something to that effect.
From here you've the 2 options.
Move
handleLogout
into theuseEffect
so it is no longer an external dependency.
QUESTION
I have an app on Angular 11 that just started getting errors (around an hour ago, without any update or anything) on all browsers, all environments (local / staging / prod) at the same time:
...ANSWER
Answered 2021-Dec-01 at 15:55Solved! After 2 hours, we finally found the culprit: a Hubspot (CRM) script imported in index.html ... (apparently it broke the HTML structure)
We removed the
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