libretro-netplay-registry/index.php

<?php

// Set the content type.
header('Content-Type: text/plain');

// Load the classes.
require_once(__DIR__ . '/src/autoload.php');

// Load the registry.
$registry = new Registry();

// Check if we are adding a new entry.
$newEntry = getNewEntry();
if ($newEntry) {
	$registry->insert($newEntry);
}

// Output the new playlist.
$playlist = new PlaylistFormatter($registry);
echo $playlist;

/**
 * Reads the GET parameters to load a new entry.
 */
function getNewEntry() {
	$entryProperties = array('username', 'corename', 'coreversion', 'gamename', 'gamecrc');
	$addedEntry = array();
	// Fill in all the properties.
	foreach ($entryProperties as $property) {
		// Retrieve the given property.
		$value = isset($_GET[$property]) ? cleanProperty($_GET[$property]) : '';
		// If it's valid, then add it to the entry.
		if (!empty($value)) {
			$addedEntry[$property] = $value;
		}
		else {
			// The properties and invalid, ignore the new entry.
			$addedEntry = array();
			break;
		}
	}

	if (empty($addedEntry)) {
		return null;
	}
	$addedEntry['ip'] = $_SERVER['REMOTE_ADDR'];
	$addedEntry['time'] = time();
	$addedEntry['port'] = '55435';
	if (isset($_GET['port'])) {
		$port = cleanProperty($_GET['port']);
		if (!empty($port)) {
			$addedEntry['port'] = $port;
		}
	}

	return $addedEntry;
}

/**
 * Cleans the given GET parameter.
 */
function cleanProperty($input = '') {
	return preg_replace('/[^-a-zA-Z0-9._ ]/', '', $input);
}