README

Filter to allow or block HTTP referers.

##Download Via Composer:

{
    "require": {
        "gabrieljmj/httprefererfilter": "dev-master"
    }
}

##Blocker actions Blocker actions are actions to be executed when a referer not allowed try a request.

• \Gabrieljmj\HttpRefererFilter\BlockerAction\RedirectWithHttpLocationHeader: Redirects to some address. Pass on constructor an instance of \Symfony\Component\HttpFoundation\RedirectResponse.
• \Gabrieljmj\HttpRefererFilter\BlockerAction\PageContent: Add on the page a content. Pass on constructor the content (string) and an instance of \Symfony\Component\HttpFoundation\Response.

##Blocking You can block specifc HTTP referers. ####Example

use Gabrieljmj\HttpRefererFilter\HttpRefererBlocker;
use Gabrieljmj\HttpRefererFilter\BlockerAction\RedirectWithHttpLocationHeader;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;

$action = new RedirectWithHttpLocationHeader(new RedirectResponse('http://mydomain.com/invalid-referer');
$blocker = new HttpRefererBlocker();
$blocker->add('http://example.com', $action)
        ->add('http://example2.com', $action);
$request = new Request($_GET, $_POST, [], $_COOKIE, $_FILES, ['HTTP_REFERER' => 'http://example_valid.com']);
var_dump($blocker->validate($request)); //bool(true)

If the domain (referer) is in the list, redirects to http://mydomain.com/invalid-referer.

##Allowing With it, allow the request just for specifc domains. ####Example

use Gabrieljmj\HttpRefererFilter\HttpRefererAllower;
use Gabrieljmj\HttpRefererFilter\BlockerAction\RedirectWithHttpLocationHeader;
use Symfony\Component\HttpFoundation\RedirectResponse;
use Symfony\Component\HttpFoundation\Request;

$action = new RedirectWithHttpLocationHeader(new RedirectResponse('http://mydomain.com/invalid-referer');
$blocker = new HttpRefererAllower($action);
$blocker->add('http://example.com')
        ->add('http://example2.com');
$request = new Request($_GET, $_POST, [], $_COOKIE, $_FILES, ['HTTP_REFERER' => 'http://example1.com']);
var_dump($blocker->validate($request)); //bool(true)

If the domain (referer) is not in the list, redirects to http://mydomain.com/invalid-referer.