I’m new to PHP and trying to get my head around security.
I have an admin page that gives access to certain administrative tasks. Right now, it lets you repopulate database tables with some seed data.
To access the admin page, you first need to login. Currently the login is not over https (it will be soon).
If you authenticate, a token is written into $_SESSION. In every admin page, the token is checked. If invalid, the page is redirected to the login page.
My question:
Is this the proper way to “lock” down sensitive administrative tasks in PHP? Checking a value inside the $_SESSION variable? What more should I be doing?
That’s pretty much the standard way to do it. Authenticate the user against your user database / password file / some other authentication data, store the state of authentication in a session variable and finally check whether the session variable is properly set every time the user attempts to make an action that requires authorization.