Need to Redirect Users Logging In

[Broken_Umbrella]

I am using JomSocial on my site, which is a community-type plugin for Joomla!.  Their login module only redirects people to their profile page. What I want is to redirect them to the last page they were on.

 

However, when someone logs in for the first time, they will be logging in from a page that has an activation token in the URL. If you try to redirect back to a URL with a token in it, the user will either get an error message or a blank page.

 

What I've tried to do is use the Stripos function to find "activate-account/?activation=" in the URL. If it finds that, I want it to redirect the user to their profile. If it doesn't find that, I want the user redirected back to the originating page... make sense?  I believe the problem is that the Stripos function never seems to find "activate-account/?activation" in the URL, so it always redirects back to the originating page.  Here's the code I have so far.  If there is a better way to code this redirect, let me know, I am definitely open to options.  Any help is greatly appreciated.

 

function getHelloMeLoginHTML($params, $type, $user)
                 {

    $findme    = 'activate-account/?activation=';
    $mystring1 = $uri;

    $pos1 = stripos($mystring1, $findme);

    $uri   = JFactory::getURI();

    if ($pos1 === false) {

                    $uri   = $uri->toString(array('path', 'query', 'fragment'));
                    $uri   = base64_encode($uri);
       
    }


    if ($pos1 !== false) {

             $uri   = CRoute::_('index.php?option=com_community&view=profile' , false );
             $uri   = base64_encode($uri);
             $html   = '';

    }