<?php /** * Elgg page handler functions * * @package Elgg * @subpackage Core * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2 * @author Curverider Ltd * @copyright Curverider Ltd 2008-2009 * @link http://elgg.org/ */ /** * Turns the current page over to the page handler, allowing registered handlers to take over * * @param string $handler The name of the handler type (eg 'blog') * @param array $page The parameters to the page, as an array (exploded by '/' slashes) * @return true|false Depending on whether a registered page handler was found */ function page_handler($handler, $page) { global $CONFIG; set_context($handler); $query = parse_url($_SERVER['REQUEST_URI']); if (isset($query['query'])) { $query = $query['query']; $query = rawurldecode($query); $query = explode('&',$query); if (sizeof($query) > 0) { foreach($query as $queryelement) { $vals = explode('=',$queryelement); if (sizeof($vals) > 1) { set_input(trim($vals[0]),trim($vals[1])); } } } } $page = explode('/',$page); if (!isset($CONFIG->pagehandler) || empty($handler)) { $result = false; } else if (isset($CONFIG->pagehandler[$handler]) && is_callable($CONFIG->pagehandler[$handler])) { $function = $CONFIG->pagehandler[$handler]; $result = $function($page, $handler); if ($result !== false) { $result = true; } } else { $result = false; } if (!$result) { $result = default_page_handler($page, $handler); } if ($result !== false) $result = true; return $result; } /** * Registers a page handler for a particular identifier * * eg, you can register a function called 'blog_page_handler' for handler type 'blog' * * Now for all URLs of type http://yoururl/blog/*, the blog_page_handler function will be called. * The part of the URL marked with * above will be exploded on '/' characters and passed as an * array to that function, eg: * * For the URL http://yoururl/blog/username/friends/: * blog_page_handler('blog', array('username','friends')); * * @param string $handler The page type to handle * @param string $function Your function name * @return true|false Depending on success */ function register_page_handler($handler, $function) { global $CONFIG; if (!isset($CONFIG->pagehandler)) $CONFIG->pagehandler = array(); if (is_callable($function)) { $CONFIG->pagehandler[$handler] = $function; return true; } return false; } /** * A default page handler that attempts to load the actual file at a given page handler location * * @param array $page The page URL elements * @param string $handler The base handler * @return true|false Depending on success */ function default_page_handler($page, $handler) { global $CONFIG; $script = ""; $page = implode('/',$page); if (($questionmark = strripos($page, '?'))) $page = substr($page, 0, $questionmark); $script = str_replace("..","",$script); $callpath = $CONFIG->path . $handler . "/" . $page; if (!file_exists($callpath) || is_dir($callpath) || substr_count($callpath,'.php') == 0) { if (substr($callpath,strlen($callpath) - 1, 1) != "/") $callpath .= "/"; $callpath .= "index.php"; if (!include($callpath)) return false; } else { include($callpath); } return true; } ?>