jonnybarnes.uk/app/Http/Middleware/LinkHeadersMiddleware.php
Jonny Barnes faf8e5c1ec
Fix CSRF exemption and array-input crash on revocation/introspection
An Opus code review of the branch caught two real bugs the test suite
structurally couldn't see:

- /revocation and /introspect were never added to bootstrap/app.php's
  CSRF except list, so both were fully broken (403) for any real
  external client, despite every feature test passing — CSRF
  verification is short-circuited entirely while running tests.
  Verified live against the running app before and after the fix, and
  added a regression test that asserts against the actual configured
  exemptions rather than relying on request-time behavior that tests
  can't exercise.

- An array-shaped `token` param (e.g. token[]=a&token[]=b) crashed
  both endpoints with a 500, since this app promotes PHP warnings
  ("Array to string conversion") to exceptions. Fixed at the shared
  root, MicropubToken::findActive(), which also closes the same latent
  hole in VerifyMicropubToken's access_token param that predates this
  branch. Verified live and covered with regression tests.

Also applied the review's lower-severity findings: added the missing
introspection_endpoint Link header and metadata test assertions,
removed the now-dead is_string($scopes) array branch in the Micropub
handlers and media controller (scope is unconditionally a string from
the DB now, this guarded against a JWT-array-claim shape that can no
longer occur), dropped a redundant #[Table] model attribute, sized
token_hash to its actual 64-char length, and removed a one-off inline
style in the admin view.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014625MfkGZ7GVdbqKme4a8L
2026-08-13 17:03:43 +01:00

27 lines
1.1 KiB
PHP

<?php
namespace App\Http\Middleware;
use Closure;
use Illuminate\Http\Request;
use Symfony\Component\HttpFoundation\Response;
class LinkHeadersMiddleware
{
/**
* Handle an incoming request.
*/
public function handle(Request $request, Closure $next): Response
{
$response = $next($request);
$response->header('Link', '<'.route('indieauth.metadata').'>; rel="indieauth-metadata"', false);
$response->header('Link', '<'.route('indieauth.start').'>; rel="authorization_endpoint"', false);
$response->header('Link', '<'.route('indieauth.token').'>; rel="token_endpoint"', false);
$response->header('Link', '<'.route('indieauth.revocation').'>; rel="revocation_endpoint"', false);
$response->header('Link', '<'.route('indieauth.introspection').'>; rel="introspection_endpoint"', false);
$response->header('Link', '<'.route('micropub-endpoint').'>; rel="micropub"', false);
$response->header('Link', '<'.route('webmention-endpoint').'>; rel="webmention"', false);
return $response;
}
}