Apache Open Directory Fetch

apache_fetch.php

#!/usr/bin/php
<?php

if (! isset($argv[1])) {
	fputs(STDERR, "Please provide a URL to crawl\n");
	die(1);
}

if (! isset($argv[2])) {
	fputs(STDERR, "Please provide an output filename\n");
	die(1);
}

$url = $argv[1];
$target = $argv[2];

if (! preg_match('/\.zip$/i', $target)) {
	$target .= '.zip';
}

if (file_exists($target)) {
	fputs(STDERR, "The file $zip already exists\n");
	die(1);
}

if (! extension_loaded('zip')) {
	fputs(STDERR, "Cannot access PHP zip library\n");
	die(1);
}

function apache_url_put_zip($base_url, $destination, $path = '', &$zip = NULL) {
	if (is_null($zip)) {
		$zip = new ZipArchive();
		if (! $zip->open($destination, ZIPARCHIVE::CREATE)) {
			fputs(STDERR, "Could not create zip\n");
			die(1);
		}
	}

	if (! $html = file_get_contents($base_url . $path)) {
		fputs(STDERR, "Could not fetch URL {$base_url}{$path}");
		die(1);
	}

	if (! $zip) {
		die(1);
	}

	if (preg_match_all('/<li><a href="(.*?)(\/?)">.*?<\/a><\/li>/i', $html, $matches)) {
		foreach ($matches[1] as $key => $url) {
			if (strstr($url, '..') !== false) {
				continue;
			} else if ($matches[2][$key] == '/'){
				$zip->addEmptyDir($path.$url.'/');
				apache_url_put_zip($base_url, $destination, $path.$url.'/', $zip);
			}  else {
				$zip->addFromString($path.$url, file_get_contents($base_url.$path.$url));
			}
		}
	}
}

apache_url_put_zip($url, $target);