auth->isSuperAdmin()) { $this->has_gui = false; } } protected function setInfo() { $this->description = __('Checks sender IP address against DNSBL servers'); } public function getStatusMessage($status, $comment_id) { return sprintf(__('Filtered by %1$s with server %2$s.'), $this->guiLink(), $status); } public function isSpam($type, $author, $email, $site, $ip, $content, $post_id, &$status) { if (!$ip || long2ip(ip2long($ip)) != $ip) { return; } $bls = $this->getServers(); $bls = preg_split('/\s*,\s*/', $bls); foreach ($bls as $bl) { if ($this->dnsblLookup($ip, $bl)) { // Pass by reference $status to contain matching DNSBL $status = $bl; return true; } } } public function gui($url) { $bls = $this->getServers(); if (isset($_POST['bls'])) { try { $this->core->blog->settings->addNamespace('antispam'); $this->core->blog->settings->antispam->put('antispam_dnsbls', $_POST['bls'], 'string', 'Antispam DNSBL servers', true, false); dcPage::addSuccessNotice(__('The list of DNSBL servers has been succesfully updated.')); http::redirect($url); } catch (Exception $e) { $core->error->add($e->getMessage()); } } /* DISPLAY ---------------------------------------------- */ $res = dcPage::notices(); $res .= '
' . '

' . __('IP Lookup servers') . '

' . '

' . form::textarea('bls', 40, 3, html::escapeHTML($bls), 'maximal') . '

' . '

' . $this->core->formNonce() . '

' . '
'; return $res; } private function getServers() { $bls = $this->core->blog->settings->antispam->antispam_dnsbls; if ($bls === null) { $this->core->blog->settings->addNamespace('antispam'); $this->core->blog->settings->antispam->put('antispam_dnsbls', $this->default_bls, 'string', 'Antispam DNSBL servers', true, false); return $this->default_bls; } return $bls; } private function dnsblLookup($ip, $bl) { $revIp = implode('.', array_reverse(explode('.', $ip))); $host = $revIp . '.' . $bl . '.'; if (gethostbyname($host) != $host) { return true; } return false; } }