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// | Copyright (c) 2005-2006 Jaimie Sirovich and Cristian Darie |

// +

-------------------------------------------------------------

+

*/

// load configuration file

require_once(‘config.inc.php’);

class SimpleCloak

{

// returns the confidence level

function isSpider($spider_name = ‘’, $check_uas = true, $check_ips = true)

{

// default confidence level to 0

$confidence = 0;

// matching user agent?

if ($check_uas)

if (SimpleCloak::_get(0, $spider_name, ‘UA’, $_SERVER[‘HTTP_USER_AGENT’]))

$confidence += 2;

// matching IP?

if ($check_ips)

if (SimpleCloak::_get(0, $spider_name, ‘IP’, ‘’, $_SERVER[‘REMOTE_ADDR’]))

$confidence += 3;

// return confidence level

return $confidence;

}

// retrieve cloaking data filtered by the supplied parameters

function _get($id = 0, $spider_name = ‘’, $record_type = ‘’,

$value = ‘’, $wildcard_value = ‘’)

{

// by default, retrieve all records

$q = “ SELECT cloak_data.* FROM cloak_data WHERE TRUE “;

// add filters

if ($id) {

$id = (int) $id;

$q .= “ AND id = $id “;

}

if ($spider_name) {

$spider_name = mysql_escape_string($spider_name);

$q .= “ AND spider_name = ‘$spider_name’ “;

}

if ($record_type) {

$record_type = mysql_escape_string($record_type);

$q .= “ AND record_type = ‘$record_type’ “;

}

if ($value) {

$value = mysql_escape_string($value);

$q .= “ AND value = ‘$value’ “;

}

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Chapter 11: Cloaking, Geo-Targeting, and IP Delivery

c11.qxd:c11 11:01 226

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