<?php





    function randLetter($letters){

        

        return $letters[array_rand($letters,1)];

        

    }



    error_reporting(0);

    define("IMAGE_BASE","..");

    

    $random = rand();



    include_once IMAGE_BASE.DIRECTORY_SEPARATOR."image/image.inc.php";



    $a = $_GET['a'];

    $b = $_GET['b'];

    $c = $_GET['c'];

    

    $tileServer = randLetter(array('a','b','c'));

    $tileFile = "/tmp/tile-$a-$b-$c.png";

    $uri = "http://$tileServer.tile.openstreetmap.org/$a/$b/$c.png";

    if(!file_exists($tileFile) ||

        filectime($tileFile) < time()-60*60){

        unlink($tileFile);

        $data = file_get_contents($uri);

        file_put_contents($tileFile,$data);

    }else{

        $data = file_get_contents($tileFile);

    }

    

    $tileServer = randLetter(array('a','b','c','d','e','f'));

    $lintFile = "/tmp/lint-$a-$b-$c.png";

    $uri = "http://$tileServer.tah.openstreetmap.org/Tiles/maplint/$a/$b/$c.png";

    if(!file_exists($lintFile) ||

        filectime($lintFile) < time()-60*60){

        unlink($lintFile);

        $data = file_get_contents($uri);

        file_put_contents($lintFile,$data);

    }else{

        $data = file_get_contents($lintFile);

    }

    

    

    $tile = imagecreatefrompng($tileFile);

    if(md5($data) != 'c549a1014b0bac4e7625e606c9b53e47'){

        $lint = imagecreateFrompng($lintFile);

        imagealphablending($img, true); 

        

        imagecopy($tile,$lint,0,0,0,0,256,256);

    }

    header('Content-Type:image/png');

    imagepng($tile);