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play.php
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<?php
/**
*
* Play page, displays the template to the end user
*
* @author Patrick Lockley
* @version 1.0
* @copyright Copyright (c) 2008,2009 University of Nottingham
* @package
*/
require_once("config.php");
require $xerte_toolkits_site->php_library_path . "login_library.php";
require $xerte_toolkits_site->php_library_path . "display_library.php";
require $xerte_toolkits_site->php_library_path . "template_library.php";
/**
*
* Function check_host
* This function checks http security settings
* @param string $hostname = should be the $SERVER referrer
* @param string $setting = what the security setting in play_security_details is
* @return bool True or False if two params match
* @version 1.0
* @author Patrick Lockley
*/
function check_host($hostname, $setting){
$hostname = substr($hostname, 0, strlen($setting));
if($hostname == $setting){
return true;
}else{
return false;
}
}
/**
*
* Function check_ip
* This function checks IP security settings
* @param string $hostname = should be the $_SERVER REMOTE_ADDR
* @param string $setting = what the security setting in play_security_details is
* @return bool True or False if two params match
* @version 1.0
* @author Patrick Lockley
*/
function check_ip($ip_address, $security_settings){
/*
* Multiple IP Addresses supported, so separate them into individual records
*/
$security_array = explode(",",$security_settings);
while($host_ip = array_pop($security_array)){
/*
* Check for an asterisk. An asterisk indicates you have a domain such as 10.*
*/
if(strpos($host_ip, "*")===false){
/*
* No asterisk, so do a straight comparison
*/
if(strcmp($ip_address,$host_ip)==0){
$flag = true;
}else{
$flag = false;
}
}else{
/*
* Found an asterisk so loop though the individual numbers if 192, then 168 checking for equivalence
*/
$security_range = explode(".",$host_ip);
$ip_range = explode(".",$ip_address);
$flag = false;
for($x=0;$x<=3;$x++){
if($security_range[$x]=="*"){
$x = 5;
}else{
if($ip_range[$x]==$security_range[$x]){
$flag = true;
}else{
$flag = false;
}
}
}
}
}
if($flag==true){
return true;
}else{
return false;
}
}
/**
*
* Function check_security_type
* This function checks database settings to see if non standard play security options have been met
* @param string $security_setting = the value taken from security_setting in play_security_details
* @return bool True or False if two params match
* @version 1.0
* @author Patrick Lockley
*/
function check_security_type($security_setting){
if($security_setting!=""){
if(substr($security_setting,0,4)=="http"){
return check_host($_SERVER['HTTP_REFERER'], $security_setting);
}else{
return check_ip($_SERVER['REMOTE_ADDR'], $security_setting);
}
}else{
return false;
}
}
if(!isset($_GET['template_id']) || !is_numeric($_GET['template_id'])) {
/*
* Was not numeric, so display error message
*/
echo edit_xerte_page_format_top(file_get_contents($xerte_toolkits_site->website_code_path . "error_top")) . " Sorry this resource does not exist </div></div></body></html>";
exit(0);
}
$safe_template_id = (int) $_GET['template_id'];
/*
* Check to see whether it is less than the highest ID we have created
*/
if(get_maximum_template_number()<$safe_template_id){
echo edit_xerte_page_format_top(file_get_contents($xerte_toolkits_site->website_code_path . "error_top")) . " Sorry this resource is no longer available </div></div></body></html>";
die();
}
/*
* Take the query from site variable and alter it to suit this request
*/
$query_for_play_content_strip = str_replace("\" . \$xerte_toolkits_site->database_table_prefix . \"", $xerte_toolkits_site->database_table_prefix, $xerte_toolkits_site->play_edit_preview_query);
$query_for_play_content = str_replace("TEMPLATE_ID_TO_REPLACE", $safe_template_id, $query_for_play_content_strip);
$query_for_play_content_response = mysql_query($query_for_play_content);
$row_play = mysql_fetch_array($query_for_play_content_response);
/*
* Is the file in the recycle bin?
*/
$row_recycle = db_query_one("SELECT folder_name FROM {$xerte_toolkits_site->database_table_prefix}folderdetails WHERE folder_id = ?", array($row_play['folder']));
if($row_recycle['folder_name']=="recyclebin"){
echo edit_xerte_page_format_top(file_get_contents($xerte_toolkits_site->website_code_path . "error_top")) . " Sorry this resource is no longer available </div></div></body></html>";
exit(0);
}
require $xerte_toolkits_site->php_library_path . "screen_size_library.php";
/*
* Start to check the access_to_whom settings from templatedetails for this template
*/
/*
* Private - so do nothing
*/
if($row_play['access_to_whom']=="Private"){
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
dont_show_template();
}else if($row_play['access_to_whom']=="Public"){
/*
* Public - Increment the number of users and show the template
*/
db_query("UPDATE {$xerte_toolkits_site->database_table_prefix}templatedetails SET number_of_uses=number_of_uses+1 WHERE template_id=?", array($safe_template_id));
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
show_template($row_play);
}else if($row_play['access_to_whom']=="Password"){
/*
* Password protected - Check if there has been a post
*/
if($_SERVER['REQUEST_METHOD'] == 'POST') {
/*
* Check the password
*/
$temp = password_username_check($_POST);
if($temp[0]=="true"){
/*
* Update uses and display the template
*/
db_query("UPDATE {$xerte_toolkits_site->database_table_prefix}templatedetails SET number_of_uses=number_of_uses+1 WHERE template_id=?", array($safe_template_id));
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
show_template($row_play);
}else{
/*
* Login failure
*/
$buffer = $xerte_toolkits_site->form_string . $temp[1] . "<p>Sorry login has failed.</p></center></body></html>";
echo $buffer;
}
}else{
/*
* There has been no postage so echo the site variable to display the login string
*/
echo $xerte_toolkits_site->form_string;
}
}else if(substr($row_play['access_to_whom'],0,5)=="Other"){
/*
* The Other attribute has been set - so break the string down to obtain the host
*/
$test_string=substr($row_play['access_to_whom'],6,strlen($row_play['access_to_whom']));
/*
* Can only check against this variable, if I can't find it (say pop ups) no choice but to fail
*/
if(strlen($_SERVER['HTTP_REFERER'])!=0){
if(strpos($_SERVER['HTTP_REFERER'],$test_string)==0){
db_query("UPDATE {$xerte_toolkits_site->database_table_prefix}templatedetails SET number_of_uses=number_of_uses+1 WHERE template_id=?", array($safe_template_id));
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
show_template($row_play);
}else{
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
dont_show_template();
}
}else{
dont_show_template();
}
}
else {
$query_for_security_content = "select * from " . $xerte_toolkits_site->database_table_prefix . "play_security_details";
$query_for_security_content_response = db_query($query_for_security_content);
if (sizeof($query_for_security_content_response)>0) {
/*
* A setting from play_security_details might be in use, as such, check to see if it is, and then loop through checking if one is valid.
*/
$flag=false;
foreach($query_for_security_content_response as $row_security) {
/*
* Check each setting to see if true
*/
if($row_play['access_to_whom']==$row_security['security_setting']){
if(check_security_type($row_security['security_data'])){
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
show_template($row_play);
$flag=true;
break;
}else{
$flag==false;
}
}
}
if($flag==false){
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
dont_show_template();
}
}
else{
require $xerte_toolkits_site->root_file_path . "modules/" . $row_play['template_framework'] . "/play.php";
dont_show_template();
}
}