Question

In the Joomla source, I found a method caled onUserAuthenticate, which could not be found in the API (through google), but its functionality is the similar to onLoginUser… So, after login/password check I need to run some more code via this function. As a result, I have true/false – depending on it I need to set users’ authorization completely. Even if the user’s login/password is correct, but my code returns false -> authorization fail…

I am trying something like:

functionon UserAuthenticate($credentials,$options,&$response){

  jimport('joomla.user.helper');

  $username=mysql_real_escape_string($credentials['username']);
  $password=mysql_real_escape_string(md5($credentials['password']));

  //my code returns $result

  if($result!=NULL){
    $response->status=JAUTHENTICATE_STATUS_SUCCESS;
    $response->error_message='';
  }
  else{
    $response->status=JAUTHENTICATE_STATUS_FAILURE;
    $response->error_message=JText::_('JGLOBAL_AUTH_INVALID_PASS');
  }
}

Answer 1

onUserAuthenticate is an event not a method. You use plugins to listen for Joomla events, in this case usually a user plugin would listen for this. When the event happens your code will run.
http://docs.joomla.org/Plugin