Enhancing Angular2 authentication with Auth0 for enabling Cross-Origin Resource Sharing

I have been working on implementing user authentication through Auth0. I followed the instructions provided on their website, but I am encountering authentication issues. Whenever I try to authenticate, an error message appears in the console stating that Cross-Origin Resource Sharing is not enabled.

Here is a snippet of my auth.service.ts class:

export class AuthService {
  // Setting up Auth0
  auth0 = new Auth0({
    domain: myConfig.domain,
    clientID: myConfig.clientID,
    callbackOnLocationHash: true,
    callbackURL: myConfig.callbackURL,
  });

  constructor(private router: Router) {
    var result = this.auth0.parseHash(window.location.hash);

    if (result && result.idToken) {
      localStorage.setItem('id_token', result.idToken);
      this.router.navigate(['/dashboard']);
    } else if (result && result.error) {
      alert('error: ' + result.error);
    }
  }

  public login(username: string, password: string) {
    this.auth0.login({
      connection: 'Username-Password-Authentication',
      responseType: 'token',
      email: username,
      password: password,
    }, function(err: any) { if (err) alert("something went wrong: " + err.message); });
  };
}

I believe I need to include a header, such as:

Access-Control-Allow-Origin: *.auth0.com*
. Where should I add this and what should be the correct format for inputting it?

The error message I am receiving reads as follows:

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at . (Reason: CORS header 'Access-Control-Allow-Origin' missing). HTTP status code: 400.

I am currently using the 'lite' Angular2 development server library/process.

The domain name has been added to both the callback and CORS whitelists via the Auth0 dashboard, in the following format:

http://*.[mydomain]*

I plan to add https://*.[mydomain]* to the list and enable automatic redirect to https:// to see if this resolves the issue. However, accessing the website through https results in the following error:

Secure Connection Failed

The connection to www.[mydomain]:3004 was interrupted while the page was loading.

This could possibly be due to the absence of an SSL certificate??

Answer №1

The issue you are encountering is related to an Auth0 API (

https://[mydomain]/usernamepassword/login
). It is not a problem with your server failing to return the necessary CORS headers, but rather the security measures implemented by the Auth0 server that prevent CORS requests unless a whitelist of origins is configured.

To successfully communicate with Auth0 APIs from a web browser, it is essential to configure the system to recognize the origin of your client application and include the required CORS headers for functionality.

To achieve this, you must add the correct origin to the Allowed Origins (CORS) settings found in the client application settings within your Auth0 Dashboard.

Answer №2

To those still encountering this problem, after adding your URL to the CORS settings in your Client Settings as recommended by Joao, double-check that you are using the correct Client ID in your configuration. If you simply copied the code from the Quick Start guide, it may default to the "Default App" client ID, so be sure to update it with the appropriate client ID for the CORS settings to be effective.

Similar questions

If you have not found the answer to your question or you are interested in this topic, then look at other similar questions below or use the search

Difficulty with navigation buttons on multiple Bootstrap carousels implemented using ngFor in a single page

Currently, I'm engaged in developing a practice eCommerce platform where multiple product cards are showcased using data from a sample JSON file. Additionally, several Bootstrap carousels are integrated into the website to display images of each item. ...

When working with Angular 5, the question arises: how and where to handle type conversion between form field values (typically strings) and model properties (such

As a newcomer to Angular, I am struggling with converting types between form field values (which are always strings) and typed model properties. In the following component, my goal is to double a number inputted by the user. The result will be displayed i ...

The use of data binding can lead to the error known as ExpressionChangedAfterItHasBeen

Just getting started with Angular 4 and encountering an ExpressionChangedAfterItHasBeenCheckedError in my data binding field. Here's the code snippet: <form> <div> <h2>Hello {{input.value}}</h2> <input type="text" [valu ...

How do I insert a new column into the result set of a query in Prisma?

Imagine a scenario where there are two tables: User, which has fields for name and Id, and Post, which has fields for name and content. These tables are connected through a many-to-many relationship (meaning one post can have multiple users/authors and eac ...

Angular: Cloudinary error { "message": "The cloud_name provided is currently inactive" }

Having an issue with Cloudinary image upload integration in Angular. After following the documentation to include the SDK and image uploader, as well as referencing some sample projects for the component and HTML, everything seems to work fine within the p ...

Can you tell me which version of Angular is the most reliable and stable?

I am currently running version 9.0.7 of Angular. Could someone recommend a stable version of Angular to use? ...

What is the method for gathering an array of emitted values from Observable.from?

So I'm working with Rxjs and have a bunch of code: return Observable.from(input_array) .concatMap((item)=>{ //This section emits an Observable.of<string> for each item in the input array }) .sc ...

Issues with NgFor directive not functioning properly within a Bootstrap class in Angular 6

In my Angular project, I have successfully implemented a REST service. The film data is displayed as a JSON object below the image. However, I am facing an issue with printing the results inside the boxes using ngIf. Strangely, it works fine with ngFor exc ...

What is the process for adding various font weights in styled-components?

Hey there, I'm looking to incorporate different font weights of the Inter font (400, 500, 700) into my project. Currently, it's only loading the Inter regular font. I'm working with create-react-app, TypeScript, and styled-components. Here& ...

Structure of document

Could anyone clarify for me the meaning of (callback[, thisObject]); that is mentioned in the TypeScript documentation here? I am particularly curious about the brackets themselves [, ]. ...

Angular Ahead-of-Time (AOT) compilation causes multiple route definitions to be

Having a bit of trouble configuring ahead-of-time compilation for my lazy-loaded Angular app. The lazy-loaded routes are specified in the app.routes.ts file, which is imported by app.module.ts. Running ngc results in the content of app.routes.ts being mer ...

The best way to access the value of a fulfilled Promise while debugging

I've been using this loopback application in my IntelliJ IDE. I set a breakpoint at the promise in calculator.controller.ts, where the code looks like this: @get('/multiply/{intA}/{intB}') async multiply( @param.path.integer('in ...

Comparing MediaObserver and BreakpointObserver: Understanding the variances

Upon conducting some research, I discovered that the recommended way to create responsive Material-themed UI is by using the Flex-Layout library (as discussed in this thread). The documentation indicates that this library offers the MediaObserver class for ...

What causes TypeScript to interpret an API call as a module and impact CSS? Encountering a Next.js compilation error

My website development process hit a roadblock when I tried integrating Material Tailwind into my project alongside Next.js, Typescript, and Tailwind CSS. The compilation error that popped up seemed unrelated to the changes, leaving me baffled as to what c ...

insert information into a fixed-size array using JavaScript

I am attempting to use array.push within a for loop in my TypeScript code: var rows = [ { id: '1', category: 'Snow', value: 'Jon', cheapSource: '35', cheapPrice: '35', amazonSource ...

The functionality of React setState seems to be malfunctioning when activated

Having encountered an unusual issue with react's setState() method. Currently, I am utilizing Azure DevOps extensions components and have a panel with an onClick event that is intended to change the state of IsUserAddedOrUpdated and trigger the addOr ...

"Utilizing Postgresql with TypeORM for filtering many-to-many relationships

I have two entities that are connected with a ManyToMany relationship: // Branch entity @ManyToMany( (type) => User, (e) => e.branches ) users: User[]; // User entity @ManyToMany( (type) => Branch, (e) ...

Exploring Angular 4's capability: Incorporating data from Http Post Response into a .js file or highchart

I'm a beginner with Angular 4. I'm trying to create a dashboard that pulls data from an Http Post Response and I want to use this data to create a Chart (Highchart). I have successfully received the response in the console.log and formatted it i ...

Updates to Providers in the latest release of Angular 2

When working with angular 2.0.0-rc.1, we implemented a Provider using the new Provider method as shown in the code snippet below: var constAccessor = new Provider(NG_VALUE_ACCESSOR, { useExisting: forwardRef(() => EJDefaultValueAccessor), ...

modify the navigation when router events are triggered

Is there a way to modify the destination route after the router events have been triggered in an Angular app? I am trying to implement a functionality where if the user clicks the browser back button, the navigation is redirected to the home page. However, ...