DNS blacklist updater to host format.

dnsblacklist-update.php

<?php

$a = new adsblock();
$a->run();
class adsblock {

        public $output_hosts_file = "/etc/powerdns/hosts-ads";
        public $redirect_ip = "0.0.0.0";

        public $fileUrls = array(
                'https://adaway.org/hosts.txt',
                'http://adblock.gjtech.net/?format=unix-hosts',
                'http://hosts-file.net/ad_servers.txt',
                'http://www.malwaredomainlist.com/hostslist/hosts.txt',
                'http://pgl.yoyo.org/adservers/serverlist.php?',
                'http://someonewhocares.org/hosts/hosts',
                'http://winhelp2002.mvps.org/hosts.txt',
        );

        public $domains = array();

        public function run() {
                $this->getFiles();
                $this->shuffle();
                $this->generateHosts();
        }

        private function getFiles() {
                $data = array();
                foreach ($this->fileUrls as $url) {
                        $data[] = file_get_contents($url);
                }
                $this->rawdata = $data;
        }

        private function shuffle() {
                foreach ($this->rawdata as $value) {
                        $tmp = explode("\n",$value);
                        foreach ($tmp as $k=>$value) {
                                $v = trim($value);
                                if (preg_match("/^#/",$v)) { continue; }
                                $b = preg_split("/\s/",$v);
                                if (count($b) >= 2) {
                                        if (isset($b[0]) && isset($b[1])) {
                                                if (!in_array($b[1],$this->domains)) {
                                                        $this->domains[] = $b[1];
                                                }
                                        }
                                }
                        }
                }
        }

        private function generateHosts() {
                $tmp = "";
                foreach ($this->domains as $domain) {
                        $tmp .= sprintf("%s %s\n",$this->redirect_ip, $domain);
                }
                file_put_contents($this->output_hosts_file, $tmp);
        }
}


?>