Re: [phplib] login before logout From: John Mandeville (mandevil <email protected>)
Date: 05/04/01

On Fri, 04 May 2001 15:41:02 -0400, darcy w. christ wrote:
>
> hi,
>
> does anyone have a good approach to the login before logout problem.
> What i mean is that i have a logout page, which has a page_open for both
> session and auth. i need the auth, obviously so that i can destroy the
> auth object. However, i ocaasionally logout after my auth has been
> terminated because i've gone past my lifetime. So, when i try to
> logout, it first asks me to log in. Not very user friendly. Anyway, i
> suppose i need to do a test to see if i am in fact logged in, before
> trying to log out. i'm just not sure how to approach this problem. Has
> anyone resolved this. i appreciate the suggestions.
>
> --
> ~darcy w. christ
> Elegant Communications Inc.
> 416.362.9772 x222 | 416.362.8324 fax

I use the following hack of the page_open() function. It's a bit --
I'd prefer page_open() not to need knowledge of the
$auth->is_authenticated(). However, it does allow me to use the auth
feature on pages that do not require a login. To create such a page,
make sure that you set a global variable $login_not_required to true
BEFORE you call page_open().

I suppose an alternate (and cleaner) method would subclass your auth
class so that start() does nothing but call $auth->is_authenticated().
I stopped experimenting when things work, not when they became clean.

page_open() is defined in page.inc. 

-- 
John Mandeville
mandevil at usc dot edu

function page_open($feature) {
  global $_PHPLIB;
  global $login_not_required;

  # enable sess and all dependent features.
  if (isset($feature["sess"])) {
    global $sess;
    $sess = new $feature["sess"];
    $sess->start();

    # the auth feature depends on sess
    if (isset($feature["auth"])) {
      global $auth;

      if (!isset($auth)) {
        $auth = new $feature["auth"];
      }
      if ( $login_not_required ) {
         $auth->is_authenticated();
      }
      else {
         $auth->start();
      }
      if ( ! $sess->is_registered( 'auth' ) ) {
         $sess->register( 'auth' );
      }

      # the perm feature depends on auth and sess
      if (isset($feature["perm"])) {
        global $perm;

        if (!isset($perm)) {
          $perm = new $feature["perm"];
        }
      }

      # the user feature depends on auth and sess
      if (isset($feature["user"])) {
        global $user;

        if (!isset($user)) {
          $user = new $feature["user"];
        }
        $user->start($auth->auth["uid"]);
      }
    }

    ## Load the auto_init-File, if one is specified.
    if (($sess->auto_init != "") && ($sess->in == "")) {
      $sess->in = 1;
      include($_PHPLIB["libdir"] . $sess->auto_init);
      if ($sess->secure_auto_init != "") {
        $sess->freeze();
      }
    } 
  }
}

-- 
John Mandeville
mandevil <email protected>

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