<?php
function sourceforge_mirrors($url) {
	$mirrors = array('jaist', 'nchc', 'optusnet', 'belnet', 'switch', 'mesh', 
		'ovh', 'dfn', 'heanet', 'surfnet', 'kent', 'umn', 'easynews', 
		'internap', 'superb-east', 'superb-west', 'ufpr');

	if(!preg_match(
		'@^http://(?:prdownloads|downloads|[a-z-]+\.dl)\.sourceforge\.net(?:/sourceforge)?/'.
		'([a-zA-Z][a-zA-Z0-9-]*)/([a-zA-Z0-9_.-]+)(\?.*)?@',
		$url, $m)
	) {
		return FALSE;
	}

	foreach($mirrors as $mirror) {
		$urls[] = "http://$mirror.dl.sourceforge.net/sourceforge/$m[1]/$m[2]";
	}
	return $urls;
}
function mysql_mirrors($url) {
	if(!preg_match(
		'@^http://dev.mysql.com/get/Downloads/([A-Za-z0-9-_]+)/'.
		'([a-zA-Z0-9_.-]+)/from/pick@',
		$url, $m)
	) {
		return FALSE;
	}
	$dom = new DOMDocument();
	$dom->loadHTML(file_get_contents($url));
	$xpath = new DOMXPath($dom);
	$list = $xpath->query("//div[@id='mirror_list']//a[text()='HTTP' or text()='FTP']");
	foreach($list as $node) {
		$urls[] = 'http://dev.mysql.com'.$node->getAttribute('href');
	}
	return $urls;
}
function chooseRandom($urls, $n=10) {
	shuffle($urls);
	$urls = array_slice($urls, 0, $n);
	return $urls;
}

//try to guess the type of URL
$url = $argv[1];
$urls = sourceforge_mirrors($url);
if ($urls === FALSE) {
	$urls = mysql_mirrors($url);
}
if ($urls === FALSE) {
	$urls = php_mirrors($url);
}
if ($urls === FALSE) {
	die("URL not recognized");
}
print_r($urls);

$cmd = 'aria2c --file-allocation=prealloc '.implode(' ', chooseRandom($urls));
passthru($cmd);

?>