like.php

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Nov 16th, 2011

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<?php
/*
* like.php
* by Stewart Souter
* email: [email protected]
*
* This scrupt is for the handling of the likes
* Will add the like and the ip to the database and
* write a cookie for additional remembering.
*/
// Lets grab the database info etc
define('LAZ_INCLUDE_PATH', dirname(__FILE__));
require_once LAZ_INCLUDE_PATH.'/admin/version.php';
require_once LAZ_INCLUDE_PATH.'/admin/config.inc.php';
require_once LAZ_INCLUDE_PATH.'/lib/mysql.class.php';
require_once LAZ_INCLUDE_PATH.'/lib/vars.class.php';
require_once LAZ_INCLUDE_PATH.'/lib/template.class.php';
// Set the prefix for the table names
define('LAZ_TABLE_PREFIX', $table_prefix);
// Get the guestbook settings
$db = new guestbook_vars(LAZ_INCLUDE_PATH);
$db->getVars();
$entry = (!empty($_GET['entry'])) ? intval($_GET['entry']) : '';
$backUrl = (preg_match('/\?/',$this->db->VARS['laz_url'])) ? '&entry=' . $entry : '?entry=' . $entry;
$backUrl = (!empty($entry)) ? $this->db->VARS['laz_url'] . $backUrl : $this->db->VARS['laz_url'];
$likedID = (!empty($_GET['like'])) ? intval($_GET['like']) : 0;
if(!empty($_COOKIE['liked']))
{
$cookieLikes = explode(',', $_COOKIE['liked']);
}
else
{
$cookieLikes[] = 0;
}
// Check that we have an id to like, the id is of a real post and that it has not already been liked by them.
if(($likedID == 0) ||
(mysql_num_rows(mysql_query('SELECT id FROM ' . LAZ_TABLE_PREFIX . '_likes WHERE ip=`$userid` AND likeid=' . $likedID))) ||
(in_array($likedID, $cookieLikes)) ||
(!mysql_num_rows(mysql_query('SELECT id FROM ' . LAZ_TABLE_PREFIX . '_data WHERE id=' . $likedID)))
)
{
header('Location: ' . $backUrl); // Return to the guestbook
}
else
{
if(isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && preg_match('/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/',$_SERVER['HTTP_X_FORWARDED_FOR']) && !preg_match('/^(192\.168\.)|(127\.0\.0\.1)|(10\.)|(169\.((1[2-9])|(2[0-9])|(30)|(31))\.)/', $_SERVER['HTTP_X_FORWARDED_FOR']))
{
$theirIP = addslashes($_SERVER['HTTP_X_FORWARDED_FOR']);
}
else
{
$theirIP = addslashes($_SERVER['REMOTE_ADDR']);
}
if($sqlQuery = 'INSERT INTO ' . LAZ_TABLE_PREFIX . '_likes (ip,likedid,time) VALUES (\''. $theirIP . '\', \'' . $likedID '\', \'' . time() . '\')')
{
$cookieValue = (!empty($_COOKIE['liked'])) ? $_COOKIE['liked'] . ',' . $likedID : $likedID;
setcookie('liked', $cookieValue, '1609480740');
}
header('Location: ' . $backUrl); // Return to the guestbook
}
?>

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