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<?php
/*
*************************************************************************
Armagetron Advanced - Alpha Project Website
Copyright (C) 2012-2013 Vijay Kakani (zodiacsohma1@gmail.com)
***************************************************************************
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***************************************************************************
*/
// check whether ?url= is set and not empty
if (isset($_REQUEST['url']) && ($_REQUEST['url'] != ""))
{
$url = $_REQUEST['url'];
$con = curl_init($url);
if (!is_null($con))
{
// set curl so output will be stord in variable
curl_setopt($con, CURLOPT_RETURNTRANSFER, true);
// execute the loading of website and
$content = trim(curl_exec($con));
// fetch the response code we get for trying to connect to that file
$response = curl_getinfo($con, CURLINFO_HTTP_CODE);
// check if response code is good == 200
if ($response == 200)
{
// if good then,
// let's parse through the content to make sure it's a map file
// if content is blank, skip the next code
if (trim($content) == "") continue;
// now verify the map file
if (validate_map('', $content))
{
// close the connection to resource
curl_close($con);
// send out the map code
respond($content, 200, 'text/xml');
}
}
}
// close the connection to resource
curl_close($con);
respond('MAP_URL_FAILED', 404);
}
elseif (isset($_REQUEST['resource']) && (isset($_REQUEST['file'])))
{
$resource = trim($_REQUEST['resource']);
$map_file = trim($_REQUEST['file']);
if (($resource != "") && ($map_file != ""))
{
$con = curl_init($resource.$map_file);
if (!is_null($con))
{
// set curl so output will be stord in variable
curl_setopt($con, CURLOPT_RETURNTRANSFER, true);
// execute the loading of website and
$content = trim(curl_exec($con));
// fetch the response code we get for trying to connect to that file
$response = curl_getinfo($con, CURLINFO_HTTP_CODE);
// check if response code is good == 200
if ($response == 200)
{
// if good then,
// let's parse through the content to make sure it's a map file
// if content is blank, skip the next code
if (trim($content) == "") continue;
// now verify the map file
if (validate_map($map_file, $content))
{
// close the connection to resource
curl_close($con);
// send out the map code
respond($content, 200, 'text/xml');
}
}
}
// close the connection to resource
curl_close($con);
}
respond('MAP_URL_FAILED', 404);
}
else respond('MAP_URL_ERROR', 404);
// respond with messsage and the status of return with the correct content_type
function respond($message, $status, $content_type = 'text/plain')
{
header('Status: ' . $status, true, $status);
header('Content-Type: '.$content_type);
if($status == 401)
header('WWW-Authenticate: AA-Hash-md5 realm=' . $_SERVER['SERVER_NAME']);
die($message . "\n");
}
function endsWith($str, $ending)
{
if (strlen($ending) > strlen($str))
return false;
if (strlen($ending) == 0)
return false;
$isThis = strtolower(substr($str, strlen($str) - strlen($ending)));
if ($isThis == strtolower($ending))
return true;
return false;
}
function validate_map($map_file, $content)
{
// map verification code
$xml = new DOMDocument;
$xml->loadXML($content);
// New code (using DTD provided in map file)
// Checks the DTD file (if it exists in our server) and then returns true or false for validation
// Question: How to get DTD that does not exist in our website?
if ($xml->validate())
{
$resources = $xml->getElementsByTagName("Resource");
if (!is_null($resources))
{
foreach($resources as $resource)
{
$author = $resource->getAttribute("author");
$version = $resource->getAttribute("version");
$type = $resource->getAttribute("type");
$name = $resource->getAttribute("name");
$category = $resource->getAttribute("category");
if ($author != "" && $version != "" && $type != "" && $name != "")
{
if ($map_file != "")
{
$mapName = $author.(($category != "")?("/".$category):"")."/".$name."-".$version.".".$type.".xml";
if ($map_file != $mapName)
return true;
}
}
break;
}
}
else return false;
return true;
}
else
return false;
// Old code (manual validation)
// The below code manually checks through things and ensures they all follow
/*
$resources = $xml->getElementsByTagName("Resource");
if (!is_null($resources))
{
foreach($resources as $resource)
{
$author = $resource->getAttribute("author");
$version = $resource->getAttribute("version");
$type = $resource->getAttribute("type");
$name = $resource->getAttribute("name");
$category = $resource->getAttribute("category");
if ($author != "" && $version != "" && $type != "" && $name != "")
{
$mapName = $name."-".$version.".".$type.".xml";
if (($mapName != $map_file) && ($map_file != "")) return false;
}
break;
}
}
else
{
//respond('MAP_FILE_NO_RESOURCE_HEADER', 404);
return false;
}
$walls = $xml->getElementsByTagName('Wall');
if (!is_null($walls))
{
foreach($walls as $wall) // load each wall
{
$points = $wall->getElementsByTagName('Point'); //get their points
if (!is_null($points))
{
$wPointer = '';
foreach($points as $point)
{
if (!$point->hasAttribute("x") && !$point->hasAttribute("y"))
{
//respond('MAP_FILE_WALL_XY_POINTS_MISSING', 404);
return false;
}
elseif (!$point->hasAttribute("x"))
{
//respond('MAP_FILE_WALL_X_POINT_MISSING', 404);
return false;
}
elseif (!$point->hasAttribute("y"))
{
//respond('MAP_FILE_WALL_Y_POINT_MISSING', 404);
return false;
}
};
}
else
{
//respond('MAP_FILE_WALL_NO_POINTS', 404);
return false;
}
}
}
else
{
//respond('MAP_FILE_NO_WALLS', 404);
return false;
}
// let's get data from the zones
$zones = $dom->getElementsByTagName('Zone');
if (!is_null($zones))
{
foreach($zones as $zone)
{
// fetch what kind of zone it is
if (!$zone->hasAttribute('effect'))
return false;
$shapes = $zone->getElementsByTagName('ShapeCircle');
if (!is_null($shapes))
{
foreach($shapes as $shape)
{
if (!$shape->hasAttribute('radius'))
return false;
$points = $shape->getElementsByTagName('Point');
foreach($points as $point)
{
if (!$point->hasAttribute('x'))
return false;
if (!$point->hasAttribute('y'))
return false;
break;
}
}
}
else return false;
}
}
$spawns = $xml->getElementsByTagName('Spawn');
if (!is_null($spawns)) // if spawns do exist on the map
{
foreach($spawns as $spawn) // load each spawn
{
// this will remain constant throughout. Leave the rest of this code as it is!
if (!$spawn->hasAttribute('x') && !$spawn->hasAttribute('y'))
{
//respond('MAP_FILE_SPAWN_XY_POINTS_MISSING', 404);
return false;
}
elseif (!$spawn->hasAttribute('xdir') && !$spawn->hasAttribute('ydir'))
{
//respond('MAP_FILE_SPAWN_DIRECTIONS_MISSING', 404);
if (!$spawn->hasAttribute('angle'))
return false;
}
elseif (!$spawn->hasAttribute('x'))
{
//respond('MAP_FILE_SPAWN_X_POINT_MISSING', 404);
return false;
}
elseif (!$spawn->hasAttribute('y'))
{
//respond('MAP_FILE_SPAWN_Y_POINT_MISSING', 404);
return false;
}
elseif (!$spawn->hasAttribute('xdir'))
{
//respond('MAP_FILE_SPAWN_X_DIRECTION_MISSING', 404);
return false;
}
elseif (!$spawn->hasAttribute('ydir'))
{
//respond('MAP_FILE_SPAWN_Y_DIRECTION_MISSING', 404);
return false;
}
}
}
else
{
//respond('MAP_FILE_NO_SPAWNS', 404);
return false;
}
return true;
*/
}
?>
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