Lockdown BuddyPress with Paid Memberships Pro Example

functions.php

<?php
/*
Plugin Name: PMPro BuddyPress Customizations
Plugin URI: http://www.paidmembershipspro.com/wp/pmpro-buddypress-customizations/
Description: Example code to lock down parts of BuddyPress with PMPro
Version: 0.2
Author: Stranger Studios
Author URI: http://www.strangerstudios.com
*/
/*	
Copyright 2010	Stranger Studios	(email : jason@strangerstudios.com)	 
*/

//disable buddy press admin bar
define('BP_DISABLE_ADMIN_BAR', true);

//hide some pages in buddypress
function pmpros_hide_buddy_press_pages()
{
	$uri = $_SERVER['REQUEST_URI'];	
	$not_allowed = array(
		//"/members/",
		"/groups/",
		"/groups/create/",
		"/groups/create/*",
		"/members/groups/",
		"/members/*/settings/",
	);
	foreach($not_allowed as $check)
	{
		//prep for regex
		$check = str_replace("/", "[\/]+", $check);					//replace /
		$check = str_replace("*\/", "[^\/]*\/", $check);			//replace * in middle of URIs
		$check = str_replace("+*", "+.*", $check);					//replace * at end of URIs
		$check = "/^" . $check . "\/?$/";							//add start/end /
				
		if(preg_match($check, $uri))
		{			
			wp_redirect(home_url());
			exit;
		}
	}
	
	//redirect groups to the forum	
	$redirects = array(
		"/groups/*",
		"/groups/*/home",
		"/groups/*/members",		
	);
	foreach($redirects as $check)
	{
		//prep for regex
		$check = str_replace("/", "[\/]+", $check);				//replace /
		$check = str_replace("*", "([^\/]*)", $check);			//replace *
		$check = "/^" . $check . "\/?/";						//add start/end /		
				
		$matched = preg_match($check, $uri, $matches);
				
		if(!empty($matches[1]))
		{			
			//but check if we're already on the forums
			$new_uri = "/groups/" . $matches[1] . "/forum/";
						
			if(strpos($uri, $new_uri) === false)
			{			
				wp_redirect(home_url("/groups/" . $matches[1] . "/forum/"));
				exit;
			}
		}
	}
	
	//lock some things for members only
	$members_only = array(
		"/members/",
	);
	foreach($members_only as $check)
	{
		//prep for regex
		$check = str_replace("/", "[\/]+", $check);				//replace /
		$check = str_replace("*\/", "[^\/]*\/", $check);		//replace * in middle of URIs
		$check = str_replace("+*", "+.*", $check);				//replace * at end of URIs
		$check = "/^" . $check . "\/?/";						//add start/end /
				
		//make sure they are a member
		if(preg_match($check, $uri) && !pmpro_hasMembershipLevel())
		{			
			wp_redirect(pmpro_url("levels"));
			exit;
		}
	}	
}
add_action("init", "pmpros_hide_buddy_press_pages");