rsemcs/dynmap/web/standalone/PostgreSQL_tiles.php

112 lines
2.7 KiB
PHP
Raw Normal View History

2022-05-12 09:33:18 +00:00
<?php
ob_start();
require_once 'PostgreSQL_funcs.php';
require 'PostgreSQL_config.php';
require 'PostgreSQL_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 = $_REQUEST['tile'];
if ((!isset($path)) || strstr($path, "..")) {
header('HTTP/1.0 500 Error');
echo "<h1>500 Error</h1>";
echo "Bad tile: " . $path;
exit();
}
$parts = explode("/", $path);
if (count($parts) != 4) {
header('Location: ../images/blank.png');
cleanupDb();
exit;
}
$uid = '[' . strtolower($userid) . ']';
$world = $parts[0];
if (isset($worldaccess[$world])) {
$ss = stristr($worldaccess[$world], $uid);
if ($ss === false) {
header('Location: ../images/blank.png');
cleanupDb();
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');
cleanupDb();
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');
cleanupDb();
exit;
}
initDbIfNeeded();
$stmt = $db->prepare('SELECT t.Image,t.Format,t.HashCode,t.LastUpdate FROM ' . $dbprefix . 'Maps m JOIN ' . $dbprefix . 'Tiles t ON m.ID=t.MapID WHERE m.WorldID=? AND m.MapID=? AND m.Variant=? AND t.x=? AND t.y=? and t.zoom=?');
$stmt->bindParam(1, $world, PDO::PARAM_STR);
$stmt->bindParam(2, $prefix, PDO::PARAM_STR);
$stmt->bindParam(3, $variant, PDO::PARAM_STR);
$stmt->bindParam(4, $x, PDO::PARAM_INT);
$stmt->bindParam(5, $y, PDO::PARAM_INT);
$stmt->bindParam(6, $zoom, PDO::PARAM_INT);
$res = $stmt->execute();
list($timage, $format, $thash, $tlast) = $stmt->fetch();
if ($res && $timage) {
if ($format == 0) {
header('Content-Type: image/png');
} else if ($format == 2) {
header('Content-Type: image/webp');
} else {
header('Content-Type: image/jpeg');
}
header('ETag: \'' . $thash . '\'');
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $tlast / 1000) . ' GMT');
echo stream_get_contents($timage);
} else {
header('Location: ../images/blank.png');
}
$stmt->closeCursor();
cleanupDb();
exit;