events - Do something just after symfony2 login success and before redirect?

Question

I'm searching for a while now, for any info, on how to do something after authentication success in symfony2. I want to rehash user password to use bcrypt just after successful authentication using old hash. I need to do this when I still have valid plain password so it should be just after credentials check and before redirect.

Any clues how to achieve that?

I found something about event dispatcher in Symfony but I can't find if there is any event after successful authentication.

Please correct me if I'm trying to do this wrong way and suggest some better approach.

//EDIT

Ok I found event fired just after auth success, it's called security.authentication.success. So i can now attach to this event but now I'm not sure where in my boundle code should I attach my event listener? Should I do that in my /src/Pkr/BlogUserBundle/DependencyInjection/PkrBlogUserExtension.php in load() method?

Answer 1

You can specify a login success handler to be executed on successful login.

For example, your security.yml

firewalls:
    main:
        pattern: ^/
        form_login:
            success_handler: my.security.login_handler

Now create the class which implements SymfonyComponentSecurityHttpAuthenticationAuthenticationSuccessHandlerInterface and on successful login, you can do whatever you need and handle the redirect as you see fit.

/**
 * 
 */
public function onAuthenticationSuccess(Request $request, TokenInterface $token)
{
    // handle it and return a response
}

Then create a service with that name in your services.xml for your bundle, or in your config.yml using the newly created handler.

I originally found out how to do this following this tutorial:

http://www.reecefowell.com/2011/10/26/redirecting-on-loginlogout-in-symfony2-using-loginhandlers/