function _fb_user_external_login in Drupal for Facebook 7.3

Same name and namespace in other branches

1. 6.3 fb_user.module \_fb_user_external_login()

If facebook user has authorized app, and account map exists, login as the local user.

Return value

• TRUE, if user_external_login succeeds.

1 call to _fb_user_external_login()

_fb_user_process_authorized_user in ./fb_user.module

Create local account or account map for a facebook user who has authorized the application.

File

./fb_user.module, line 335

This module manages relations between local Drupal user accounts and their accounts on facebook.com.

Code

function _fb_user_external_login($account = NULL) {
  $fbu = fb_facebook_user();
  if (!$account) {
    $account = fb_user_get_local_user($fbu, $GLOBALS['_fb_app']);
  }
  if ($account && $account->uid == $GLOBALS['user']->uid) {

    // Already logged in.
    return $account;
  }
  elseif ($fbu && $account && $account->uid != $GLOBALS['user']->uid && !fb_controls(FB_USER_CONTROL_NO_HONOR_MAP)) {

    // Map exists. Log in as local user.
    $session_id = session_id();
    if (fb_verbose() === 'extreme') {

      // debug
      watchdog("fb_user", "fb_user_fb changing user to {$account->uid}");
    }

    // user_external_login() fails if already logged in, so log out first.
    if ($GLOBALS['user']->uid) {
      _fb_logout();
    }

    // user_external_login() removed in D7, no replacement.  Let's hope the following works.
    $GLOBALS['user'] = $account;
    $account_array = (array) $account;
    user_login_finalize($account_array);

    // Special effort to support browsers without third-party cookies.
    if (function_exists('fb_sess_regenerate_hack')) {
      fb_sess_regenerate_hack();
    }
    if (fb_verbose() === 'extreme') {

      // debug
      watchdog("fb_user", "fb_user_fb changed session from {$session_id} to " . session_id());
    }

    // Session changed after external login. Invoking hook here allows modules to drupal_set_message().
    fb_invoke(FB_USER_OP_POST_EXTERNAL_LOGIN, array(
      'account' => $account,
    ), NULL, 'fb_user');
    return $account;
  }
  return FALSE;
}