Moving the login page to a different server in Django without the CSRF token

Question

Moving the login page to a different server in Django without the CSRF token

I have a login page that utilizes the django authentication system.

Now, I am looking to transfer just the login page to a separate server (an external login page).

My goal is to have the username and password fields on the external login page, and then log in to the django system.

I have created the HTML on the external server.

<form method="POST" action="http://djangoserver.com/">
   <input type="text" name="username">
   <input type="password" name="password">
  <input type="submit">
</form>

However, I encountered an error.

Reason given for failure:
    CSRF token missing

Upon inspecting the source code of the login page, I noticed that django automatically generates a csrf token using middleware.

    <form method="POST">
        <input type="hidden" name="csrfmiddlewaretoken" value="VEkMTu0EpmLbMVLRh4h9MOcuvcryIlA0M1USByG7R5PXkgYvMyzAhdKyq7gohpko">
            Username
            <input type="text" name="username" autofocus autocapitalize="none" autocomplete="username" maxlength="150" class="form-control" placeholder="Username" required id="id_username">
            
            Password
            <input type="password" name="password" autocomplete="current-password" class="form-control" placeholder="Password" required id="id_password">
            
        <button type="submit">login</button>
    </form>

Therefore, I believe I need to replicate the csrf token setup on the external login page.

Does anyone have any suggestions on how to achieve this?

javascript django

Answer 1

Answer №1

Adding a csrfmiddlewaretoken field to your form is crucial for security reasons. Since the login page exists outside of the main server, you must create an endpoint within your project to generate a CSRF token, which can then be retrieved and inserted into the form using JavaScript. Here is an example of how to do this:

<form method="POST" action="http://YOUR-SITE.COM/">
   <input type="hidden" name="csrfmiddlewaretoken" id="csrf_token">
   <input type="text" name="username">
   <input type="password" name="password">
   <input type="submit">
</form>

<script>
   // Retrieve the CSRF token from the server
   fetch('http://YOUR-SITE.COM/csrf_token/')
      .then(response => response.json())
      .then(data => {
         // Assign the CSRF token to the form field
         document.getElementById('csrf_token').value = data.csrf_token;
      });
</script>

Ensure that your application's view includes the following code:

from django.http import JsonResponse
from django.middleware.csrf import get_token

def get_csrf_token(request):
    csrf_token = get_token(request)
    return JsonResponse({'csrf_token': csrf_token})

Remember to add the URL for this view to your Django server's URL configuration.

Answer 2

Adding a csrfmiddlewaretoken field to your form is crucial for security reasons. Since the login page exists outside of the main server, you must create an endpoint within your project to generate a CSRF token, which can then be retrieved and inserted into the form using JavaScript. Here is an example of how to do this:

<form method="POST" action="http://YOUR-SITE.COM/">
   <input type="hidden" name="csrfmiddlewaretoken" id="csrf_token">
   <input type="text" name="username">
   <input type="password" name="password">
   <input type="submit">
</form>

<script>
   // Retrieve the CSRF token from the server
   fetch('http://YOUR-SITE.COM/csrf_token/')
      .then(response => response.json())
      .then(data => {
         // Assign the CSRF token to the form field
         document.getElementById('csrf_token').value = data.csrf_token;
      });
</script>

Ensure that your application's view includes the following code:

from django.http import JsonResponse
from django.middleware.csrf import get_token

def get_csrf_token(request):
    csrf_token = get_token(request)
    return JsonResponse({'csrf_token': csrf_token})

Remember to add the URL for this view to your Django server's URL configuration.

Moving the login page to a different server in Django without the CSRF token

Answer №1

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