adbario / slim-csrf
CSRF protection for Slim 3 framework
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Requires
- php: >=5.5
- adbario/slim-secure-session-middleware: ~1.3.1
- slim/slim: ~3.0
This package is auto-updated.
Last update: 2024-11-11 15:06:12 UTC
README
Protection against CSRF in Slim 3 framework. Uses Slim Secure Session Middleware to manage session and automatically creates HTML form hidden input for Twig-View and PHP-View.
CSRF protection will be applied to POST, PUT, DELETE and PATCH requests.
Installation
composer require adbario/slim-csrf
Usage
Depency Container
Inject session helper to application container (read more about session helper):
$container['session'] = function ($container) { return new \Adbar\Session( $container->get('settings')['session']['namespace'] ); };
Inject CSRF protection in application container:
$container['csrf'] = function ($c) { return new \Adbar\Slim\Csrf($c->get('session')); };
If you use Twig-View or PHP-View:
$container['csrf'] = function ($c) { return new \Adbar\Slim\Csrf( $c->get('session'), $c->get('view') ); };
Other dependencies
CSRF protection needs Slim Secure Session Middleware. Inject settings for session middleware and register it:
$app->add(new \Adbar\SessionMiddleware($container->get('settings')['session']));
Register for all routes
To use CSRF protection on all routes, register it as a middleware before session middleware:
/** Csrf */ $app->add($app->getContainer()->get('csrf')); /** Session */ $app->add(new \Adbar\SessionMiddleware($container->get('settings')['session']));
Register per route
To use CSRF protection on specific routes, add it like this:
$app->get('/form', function ($request, $response) { // CSRF token will be added return $this->view->render($response, 'form.twig'); })->add($container->get('csrf')); $app->post('/form', function ($request, $response) { // If CSRF token was valid, code after this will run })->add($container->get('csrf'));
Twig-View
Ready-to-use HTML form hidden input will be injected in Twig-View, to use it in your view:
<form method="post"> {{ csrf|raw }} Username <input type="text" name="username"> <input type="submit" value="Send"> </form>
PHP-View
Ready-to-use HTML form hidden input will be injected also in Twig-View, to use it in your view:
<form method="post"> <?= $csrf ?> Username <input type="text" name="username"> <input type="submit" value="Send"> </form>
Other template engines
You can easily use CSRF protection on other template engines as well. Inject to container without view:
$container['csrf'] = function () { return new \Adbar\Slim\Csrf; };
Generate HTML hidden input field:
$app->get('/form', function ($request, $response) { // Generate form field $csrf = $this->csrf->generateForm(); // Inject form field to your view... });
Custom error on CSRF token failure
By default, CSRF protection shows simple message on failure:
Invalid security token.
You can render a custom template if CSRF token isn't valid, edit container:
$container['csrf'] = function ($c) { $csrf = new \Adbar\Slim\Csrf( $c->get('session'), $c->get('view') ); $csrf->setTokenError(function ($request, $response, $next) use ($c) { return $c->view->render($response->withStatus(400), 'csrf_error.twig'); }); return $csrf; };
If you just want to edit simple message:
$container['csrf'] = function ($c) { $csrf = new \Adbar\Slim\Csrf( $c->get('session'), $c->get('view') ); $csrf->setTokenErrorMessage('This is my custom error message.'); return $csrf; };