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I have the simple LDAP module installed and running, and I would like to prevent Drupal from creating a new user after a user authenticates if it does not already exist in Drupal.

I found the function 'simple_ldap_user_load_or_create_by_name', if (!$Drupal_user) ...

I cannot find a hook to modify this function, no way to do it without changing the module?

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  • Are you wanting to allow those users to have access to the site but have no user object in the database, or do you want to deny them access entirely?
    – acrosman
    May 18 '16 at 22:32
  • I would like to create the users with LDAP credentials by an administrator from the backend, not directly from the login form
    – carlo
    May 18 '16 at 22:38
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As you are describing it, this is not possible. You can limit authentication and user creation to only LDAP accounts, but you must have a local Drupal user.

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  • Sure, but I wish the local Drupal users are created only by the backend and not from the login mask. With the Simple LDAP module when a user authenticates if the user does not exist in Drupal he creates, this thing I would like to avoid it. So you can only authenticate the users previously already created in Drupal by a amministartore.
    – carlo
    May 19 '16 at 5:19
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The Simple LDAP module's Simple LDAP Role submodule probably allows you to do something that would achieve the result you want (only a few people have more access than anonymous users). You can create a role in Drupal for privileged users, map that role to a group in LDAP, and then map everyone else to Authenticated user. If the authenticated user role has the same permissions as Anonymous you will have a very similar effect. That module might also allow you to control which groups can authenticate at all.

To have more features and more control you likely will need to create a custom submodule or switch to the larger LDAP module. The LDAP Module is powerful and useful, but not the best supported module in the community.

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