* @link http://elgg.org/
 */
/**
 * Get some input from variables passed on the GET or POST line.
 *
 * Note: this function does not handle nested arrays (ex: form input of param[m][n])
 * because of the filtering done in htmlawed from the filter_tags call.
 *
 * @param $variable string The variable we want to return.
 * @param $default mixed A default value for the variable if it is not found.
 * @param $filter_result If true then the result is filtered for bad tags.
 */
function get_input($variable, $default = "", $filter_result = true) {
	global $CONFIG;
	if (isset($CONFIG->input[$variable])) {
		$var = $CONFIG->input[$variable];
		if ($filter_result) {
			$var = filter_tags($var);
		}
		return $var;
	}
	if (isset($_REQUEST[$variable])) {
		if (is_array($_REQUEST[$variable])) {
			$var = $_REQUEST[$variable];
		} else {
			$var = trim($_REQUEST[$variable]);
		}
		if ($filter_result) {
			$var = filter_tags($var);
		}
		return $var;
	}
	return $default;
}
/**
 * Sets an input value that may later be retrieved by get_input
 *
 * Note: this function does not handle nested arrays (ex: form input of param[m][n])
 *
 * @param string $variable The name of the variable
 * @param string $value The value of the variable
 */
function set_input($variable, $value) {
	global $CONFIG;
	if (!isset($CONFIG->input)) {
		$CONFIG->input = array();
	}
	if (is_array($value)) {
		foreach ($value as $key => $val) {
			$value[$key] = trim($val);
		}
		$CONFIG->input[trim($variable)] = $value;
	} else {
		$CONFIG->input[trim($variable)] = trim($value);
	}
}
/**
 * Filter tags from a given string based on registered hooks.
 * @param $var
 * @return mixed The filtered result
 */
function filter_tags($var) {
	return trigger_plugin_hook('validate', 'input', null, $var);
}
/**
 * Sanitise file paths for input, ensuring that they begin and end with slashes etc.
 *
 * @param string $path The path
 * @return string
 */
function sanitise_filepath($path) {
	// Convert to correct UNIX paths
	$path = str_replace('\\', '/', $path);
	// Sort trailing slash
	$path = trim($path);
	// rtrim defaults plus /
	$path = rtrim($path, " \n\t\0\x0B/");
	$path = $path . "/";
	return $path;
}
/**
 * Takes a string and turns any URLs into formatted links
 *
 * @param string $text The input string
 * @return string The output stirng with formatted links
 **/
function parse_urls($text) {
	return preg_replace_callback('/(?"\'\!\(\)]+)/i',
	create_function(
		'$matches',
		'
			$url = $matches[1];
			$urltext = str_replace("/", "/
\s*
|', "\n\n", $pee);
	// Space things out a little
	$allblocks = '(?:table|thead|tfoot|caption|colgroup|tbody|tr|td|th|div|dl|dd|dt|ul|ol|li|pre|select|form|map|area|blockquote|address|math|style|input|p|h[1-6]|hr)';
	$pee = preg_replace('!(<' . $allblocks . '[^>]*>)!', "\n$1", $pee);
	$pee = preg_replace('!(' . $allblocks . '>)!', "$1\n\n", $pee);
	$pee = str_replace(array("\r\n", "\r"), "\n", $pee); // cross-platform newlines
	if ( strpos($pee, '
\s*(?' . $allblocks . '[^>]*>)!', "$1", $pee); $pee = preg_replace('!(?' . $allblocks . '[^>]*>)\s*
!', "$1", $pee); if ($br) { $pee = preg_replace_callback('/<(script|style).*?<\/\\1>/s', create_function('$matches', 'return str_replace("\n", ")(.*?)!is', 'clean_pre', $pee ); } $pee = preg_replace( "|\n$|", '', $pee ); return $pee; } /** * Page handler for autocomplete endpoint. * * @param $page * @return unknown_type */ function input_livesearch_page_handler($page) { global $CONFIG; // only return results to logged in users. if (!$user = get_loggedin_user()) { exit; } if (!$q = get_input('q')) { exit; } $q = mysql_real_escape_string($q); // replace mysql vars with escaped strings $q = str_replace(array('_', '%'), array('\_', '\%'), $q); $match_on = get_input('match_on', 'all'); if ($match_on == 'all' || $match_on[0] == 'all') { $match_on = array('users', 'groups'); } if (!is_array($match_on)) { $match_on = array($match_on); } if (get_input('match_owner', false)) { $owner_guid = $user->getGUID(); $owner_where = 'AND e.owner_guid = ' . $user->getGUID(); } else { $owner_guid = null; $owner_where = ''; } $limit = get_input('limit', 10); // grab a list of entities and send them in json. $results = array(); foreach ($match_on as $type) { switch ($type) { case 'all': // only need to pull up title from objects. if (!$entities = get_entities(null, null, $owner_guid, null, $limit) AND is_array($entities)) { $results = array_merge($results, $entities); } break; case 'users': $query = "SELECT * FROM {$CONFIG->dbprefix}users_entity as ue, {$CONFIG->dbprefix}entities as e WHERE e.guid = ue.guid AND e.enabled = 'yes' AND ue.banned = 'no' AND (ue.name LIKE '$q%' OR ue.username LIKE '$q%') LIMIT $limit "; if ($entities = get_data($query)) { foreach ($entities as $entity) { $json = json_encode(array( 'type' => 'user', 'name' => $entity->name, 'desc' => $entity->username, 'icon' => '