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fabric121

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fabric121
File size: 2,903 Bytes 
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<?php

ob_start();
require 'dynmap_access.php';
ob_end_clean();

session_start();

if (isset($_SESSION['userid'])) {
    $userid = $_SESSION['userid'];
} else {
    $userid = '-guest-';
}

$loggedin = false;
if (strcmp($userid, '-guest-')) {
    $loggedin = true;
}

$path = htmlspecialchars($_REQUEST['tile']);
if ((!isset($path)) || strstr($path, "..")) {
    header('HTTP/1.0 500 Error');
    echo "<h1>500 Error</h1>";
    echo "Bad marker: " . $path;
    exit();
}

$parts = explode("/", $path);

if (count($parts) != 4) {
    header('Location: ../images/blank.png');
    exit;
}

$uid = '[' . strtolower($userid) . ']';

$world = $parts[0];

if (isset($worldaccess[$world])) {
    $ss = stristr($worldaccess[$world], $uid);
    if ($ss === false) {
        header('Location: ../images/blank.png');
        exit;
    }
}
$variant = 'STANDARD';

$prefix = $parts[1];
$plen = strlen($prefix);
if (($plen > 4) && (substr($prefix, $plen - 4) === "_day")) {
    $prefix = substr($prefix, 0, $plen - 4);
    $variant = 'DAY';
}
$mapid = $world . "." . $prefix;
if (isset($mapaccess[$mapid])) {
    $ss = stristr($mapaccess[$mapid], $uid);
    if ($ss === false) {
        header('Location: ../images/blank.png');
        exit;
    }
}

$fparts = explode("_", $parts[3]);
if (count($fparts) == 3) { // zoom_x_y
    $zoom = strlen($fparts[0]);
    $x = intval($fparts[1]);
    $y = intval($fparts[2]);
} elseif (count($fparts) == 2) { // x_y
    $zoom = 0;
    $x = intval($fparts[0]);
    $y = intval($fparts[1]);
} else {
    header('Location: ../images/blank.png');
    exit;
}

$db = new SQLite3($dbfile, SQLITE3_OPEN_READONLY);

$stmt = $db->prepare('SELECT Tiles.Image,Tiles.Format,Tiles.HashCode,Tiles.LastUpdate,Tiles.ImageLen FROM Maps JOIN Tiles ON Maps.ID=Tiles.MapID WHERE Maps.WorldID=:wid AND Maps.MapID=:mapid AND Maps.Variant=:var AND Tiles.x=:x AND Tiles.y=:y and Tiles.zoom=:zoom');
$stmt->bindValue(':wid', $world, SQLITE3_TEXT);
$stmt->bindValue(':mapid', $prefix, SQLITE3_TEXT);
$stmt->bindValue(':var', $variant, SQLITE3_TEXT);
$stmt->bindValue(':x', $x, SQLITE3_INTEGER);
$stmt->bindValue(':y', $y, SQLITE3_INTEGER);
$stmt->bindValue(':zoom', $zoom, SQLITE3_INTEGER);
$res = $stmt->execute();
$row = $res->fetchArray();
if (isset($row[1])) {
    $format = $row[1];
    if ($format == 0) {
        header('Content-Type: image/png');
    } else if ($format == 2) {
        header('Content-Type: image/webp');
    } else {
        header('Content-Type: image/jpeg');
    }
    header('ETag: \'' . $row[2] . '\'');
    header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $row[3] / 1000) . ' GMT');
    if ($row[4] > 0) {
        $v = substr($row[0], 0, $row[4]);
    } else {
        $v = rtrim($row[0], "\0");
    }
    header('Content-Length: ' . strlen($v));
    echo $v;
} else {
    header('Location: ../images/blank.png');
}

$res->finalize();
$stmt->close();
$db->close();

exit;