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[Security] : Aligning CSRF tokenId with other code sample #19808

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[Security] : Aligning CSRF tokenId with other code sample #19808

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d80b3c4
[Security]: Aligning CSRF `tokenId` with other code sample
ThomasLandauer Apr 20, 2024
12e045d
Update custom_authenticator.rst
ThomasLandauer Apr 20, 2024
92a8fe8
Update security.rst
ThomasLandauer Apr 21, 2024
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9 changes: 4 additions & 5 deletions security.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -958,10 +958,9 @@ First, you need to enable CSRF on the form login:

.. _csrf-login-template:

Then, use the ``csrf_token()`` function in the Twig template to generate a CSRF
token and store it as a hidden field of the form. By default, the HTML field
must be called ``_csrf_token`` and the string used to generate the value must
be ``authenticate``:
Then, add a hidden field to the form. In order to work with the built-in ``FormLoginAuthenticator``,
the HTML field must be called ``_csrf_token``, and the argument of Twig's ``csrf_token()`` function
must be called ``authenticate``:

.. code-block:: html+twig

Expand All @@ -971,7 +970,7 @@ be ``authenticate``:
<form action="{{ path('app_login') }}" method="post">
{# ... the login fields #}

<input type="hidden" name="_csrf_token" value="{{ csrf_token('authenticate') }}">
<input type="hidden" name="_csrf_token" value="{{ csrf_token('login') }}">

<button type="submit">login</button>
</form>
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4 changes: 2 additions & 2 deletions security/custom_authenticator.rst
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Expand Up @@ -349,9 +349,9 @@ would initialize the passport like this::
{
public function authenticate(Request $request): Passport
{
$password = $request->request->get('password');
$username = $request->request->get('username');
$csrfToken = $request->request->get('csrf_token');
$password = $request->request->get('password');
$csrfToken = $request->request->get('_csrf_token');
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I think we should also revert this change. The underscore prefix is only something used in the build-in authenticator (it's a convention in Symfony to prefix things with an underscore to avoid conflicts with application names).

When implementing a custom authenticator, you can name the field whatever you like and it's better to not use the underscore prefix as this counters the anti-conflict purpose of the prefix.
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OK, but now the docs are inconsistent (i.e. the HTML shown on one page doesn't work with the PHP code shown on the other page).

Solution? => Show the right HTML code here too!

To make this possible, the list at https://symfony.com/doc/5.x/security/custom_authenticator.html#passport-badges needs to be changed to sub-headings. Then the PHP code block we're talking about can be moved upwards under the (new) "CsrfTokenBadge" heading (=where it belongs anyway). Then I can add this HTML, resulting in a complete copy-pastable sample:

<input type="hidden" name="csrf_token" value="{{ csrf_token('login') }}"> <input type="text" name="username"> <input type="password" name="password">

What do you think?

// ... validate no parameter is empty

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