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<?php |
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ob_start(); |
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require 'dynmap_access.php'; |
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ob_end_clean(); |
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session_start(); |
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if (isset($_SESSION['userid'])) { |
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$userid = $_SESSION['userid']; |
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} else { |
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$userid = '-guest-'; |
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} |
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$loggedin = false; |
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if (strcmp($userid, '-guest-')) { |
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$loggedin = true; |
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} |
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$path = htmlspecialchars($_REQUEST['tile']); |
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if ((!isset($path)) || strstr($path, "..")) { |
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header('HTTP/1.0 500 Error'); |
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echo "<h1>500 Error</h1>"; |
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echo "Bad marker: " . $path; |
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exit(); |
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} |
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$parts = explode("/", $path); |
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if (count($parts) != 4) { |
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header('Location: ../images/blank.png'); |
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exit; |
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} |
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$uid = '[' . strtolower($userid) . ']'; |
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$world = $parts[0]; |
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if (isset($worldaccess[$world])) { |
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$ss = stristr($worldaccess[$world], $uid); |
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if ($ss === false) { |
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header('Location: ../images/blank.png'); |
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exit; |
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} |
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} |
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$variant = 'STANDARD'; |
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$prefix = $parts[1]; |
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$plen = strlen($prefix); |
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if (($plen > 4) && (substr($prefix, $plen - 4) === "_day")) { |
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$prefix = substr($prefix, 0, $plen - 4); |
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$variant = 'DAY'; |
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} |
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$mapid = $world . "." . $prefix; |
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if (isset($mapaccess[$mapid])) { |
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$ss = stristr($mapaccess[$mapid], $uid); |
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if ($ss === false) { |
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header('Location: ../images/blank.png'); |
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exit; |
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} |
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} |
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$fparts = explode("_", $parts[3]); |
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if (count($fparts) == 3) { |
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$zoom = strlen($fparts[0]); |
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$x = intval($fparts[1]); |
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$y = intval($fparts[2]); |
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} elseif (count($fparts) == 2) { |
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$zoom = 0; |
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$x = intval($fparts[0]); |
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$y = intval($fparts[1]); |
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} else { |
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header('Location: ../images/blank.png'); |
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exit; |
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} |
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$db = new SQLite3($dbfile, SQLITE3_OPEN_READONLY); |
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$stmt = $db->prepare('SELECT Tiles.Image,Tiles.Format,Tiles.HashCode,Tiles.LastUpdate,Tiles.ImageLen FROM Maps JOIN Tiles ON Maps.ID=Tiles.MapID WHERE Maps.WorldID=:wid AND Maps.MapID=:mapid AND Maps.Variant=:var AND Tiles.x=:x AND Tiles.y=:y and Tiles.zoom=:zoom'); |
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$stmt->bindValue(':wid', $world, SQLITE3_TEXT); |
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$stmt->bindValue(':mapid', $prefix, SQLITE3_TEXT); |
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$stmt->bindValue(':var', $variant, SQLITE3_TEXT); |
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$stmt->bindValue(':x', $x, SQLITE3_INTEGER); |
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$stmt->bindValue(':y', $y, SQLITE3_INTEGER); |
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$stmt->bindValue(':zoom', $zoom, SQLITE3_INTEGER); |
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$res = $stmt->execute(); |
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$row = $res->fetchArray(); |
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if (isset($row[1])) { |
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$format = $row[1]; |
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if ($format == 0) { |
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header('Content-Type: image/png'); |
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} else if ($format == 2) { |
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header('Content-Type: image/webp'); |
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} else { |
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header('Content-Type: image/jpeg'); |
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} |
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header('ETag: \'' . $row[2] . '\''); |
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $row[3] / 1000) . ' GMT'); |
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if ($row[4] > 0) { |
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$v = substr($row[0], 0, $row[4]); |
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} else { |
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$v = rtrim($row[0], "\0"); |
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} |
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header('Content-Length: ' . strlen($v)); |
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echo $v; |
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} else { |
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header('Location: ../images/blank.png'); |
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} |
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$res->finalize(); |
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$stmt->close(); |
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$db->close(); |
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exit; |
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