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Submitted by shyam on Thu, 07/02/2009 - 18:19.
Tags : Authentication drupal Registration
Hello sir,
I am facing follwing problem in Drupal. Would you please help me as soon as possible
Users must be able to register on the Drupal website and log in. We need a custom module which will authenticate the user via an XML-RPC web service.
We have all the details about the web service and how to call it after successful authentication.

You can alter user_login
You can alter user_login form (see hook_form_alter on api.drupal.org) and add your validate function ('#validate' property of a form). In that function you can call a XML request and check authentication.
However I am not clear about your requirement. Call me if you want discuss more.
~ suresh