ultimatemember/core/um-rewrite.php

<?php

class UM_Rewrite {

	function __construct() {

		add_filter('query_vars', array(&$this, 'query_vars'), 10, 1 );

		add_action('init', array(&$this, 'rewrite_rules'), 100000000 );

		add_action('template_redirect', array(&$this, 'redirect_author_page'), 9999 );

		add_action('template_redirect', array(&$this, 'locate_user_profile'), 9999 );

	}

	/***
	***	@modify global query vars
	***/
	function query_vars($public_query_vars) {
		$public_query_vars[] = 'um_user';
		$public_query_vars[] = 'um_tab';
		$public_query_vars[] = 'profiletab';
		$public_query_vars[] = 'subnav';
		return $public_query_vars;
	}

	/***
	***	@setup rewrite rules
	***/
	function rewrite_rules(){

		global $ultimatemember;

		if ( isset( $ultimatemember->permalinks->core['user'] ) ) {

			$user_page_id = $ultimatemember->permalinks->core['user'];
			$account_page_id = $ultimatemember->permalinks->core['account'];
			$user = get_post($user_page_id);

			if ( isset( $user->post_name ) ) {

				$user_slug = $user->post_name;
				$account = get_post($account_page_id);
				$account_slug = $account->post_name;

				$add_lang_code = '';

				if ( function_exists('icl_object_id') || function_exists('icl_get_current_language')  ) {

					if( function_exists('icl_get_current_language') ){
						$language_code = icl_get_current_language();
					}else if( function_exists('icl_object_id') && defined('ICL_LANGUAGE_CODE') ){
						$language_code = ICL_LANGUAGE_CODE;
					}

					// User page translated slug
					$lang_post_id = icl_object_id( $user->ID, 'post', FALSE, $language_code );
					$lang_post_obj = get_post( $lang_post_id );
					if( isset( $lang_post_obj->post_name ) ){
						$user_slug = $lang_post_obj->post_name;
					}

					// Account page translated slug
					$lang_post_id = icl_object_id( $account->ID, 'post', FALSE, $language_code );
					$lang_post_obj = get_post( $lang_post_id );
					if( isset( $lang_post_obj->post_name ) ){
						$account_slug = $lang_post_obj->post_name;
					}

					if(  $language_code != icl_get_default_language() ){
						$add_lang_code = $language_code;
					}

				}

				add_rewrite_rule( $user_slug.'/([^/]+)/?$',
									'index.php?page_id='.$user_page_id.'&um_user=$matches[1]&lang='.$add_lang_code,
									'top'
				);

				add_rewrite_rule( $account_slug.'/([^/]+)?$',
									'index.php?page_id='.$account_page_id.'&um_tab=$matches[1]&lang='.$add_lang_code,
									'top'
				);

				if( !apply_filters('um_rewrite_flush_rewrite_rules', um_get_option('um_flush_stop') ) )
					flush_rewrite_rules( true );

			}

		}

	}

	/***
	***	@author page to user profile redirect
	***/
	function redirect_author_page() {
		if ( um_get_option('author_redirect') && is_author() ) {
			$id = get_query_var( 'author' );
			um_fetch_user( $id );
			exit( wp_redirect( um_user_profile_url() ) );
		}
	}

	/***
	***	@locate/display a profile
	***/
	function locate_user_profile() {
		global $post, $ultimatemember;

		if ( um_queried_user() && um_is_core_page('user') ) {

			if ( um_get_option('permalink_base') == 'user_login' ) {

				$user_id = username_exists( um_queried_user() );

				// Try nice name
				if ( !$user_id ) {
					$slug = um_queried_user();
					$slug = str_replace('.','-',$slug);
					$the_user = get_user_by( 'slug', $slug );
					if ( isset( $the_user->ID ) ){
						$user_id = $the_user->ID;
					}
					
					if( !$user_id ){
						$user_id = $ultimatemember->user->user_exists_by_email_as_username( $slug );
					}

				}

			}

			if ( um_get_option('permalink_base') == 'user_id' ) {
				$user_id = $ultimatemember->user->user_exists_by_id( um_queried_user() );

			}

			if ( in_array( um_get_option('permalink_base'), array('name','name_dash','name_dot','name_plus') ) ) {
				$user_id = $ultimatemember->user->user_exists_by_name( um_queried_user() );

			}

			/** USER EXISTS SET USER AND CONTINUE **/

			if ( $user_id ) {

				um_set_requested_user( $user_id );

				do_action('um_access_profile', $user_id );

			} else {

				exit( wp_redirect( um_get_core_page('user') ) );

			}

		} else if ( um_is_core_page('user') ) {

			if ( is_user_logged_in() ) { // just redirect to their profile

				$query = $ultimatemember->permalinks->get_query_array();

				$url = um_user_profile_url();

				if ( $query ) {
					foreach( $query as $key => $val ) {
						$url =  add_query_arg($key, $val, $url);
					}
				}

				exit( wp_redirect( $url ) );
			}else{
				exit( wp_redirect( home_url() ) );
			}

		}

	}

}