112 lines
2.7 KiB
PHP
112 lines
2.7 KiB
PHP
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<?php
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ob_start();
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require_once 'PostgreSQL_funcs.php';
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require 'PostgreSQL_config.php';
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require 'PostgreSQL_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 = $_REQUEST['tile'];
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if ((!isset($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 tile: " . $path;
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exit();
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}
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$parts = explode("/", $path);
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if (count($parts) != 4) {
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header('Location: ../images/blank.png');
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cleanupDb();
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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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cleanupDb();
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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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cleanupDb();
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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) { // zoom_x_y
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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($fparts) == 2) { // x_y
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$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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cleanupDb();
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exit;
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}
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initDbIfNeeded();
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$stmt = $db->prepare('SELECT t.Image,t.Format,t.HashCode,t.LastUpdate FROM ' . $dbprefix . 'Maps m JOIN ' . $dbprefix . 'Tiles t ON m.ID=t.MapID WHERE m.WorldID=? AND m.MapID=? AND m.Variant=? AND t.x=? AND t.y=? and t.zoom=?');
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$stmt->bindParam(1, $world, PDO::PARAM_STR);
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$stmt->bindParam(2, $prefix, PDO::PARAM_STR);
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$stmt->bindParam(3, $variant, PDO::PARAM_STR);
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$stmt->bindParam(4, $x, PDO::PARAM_INT);
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$stmt->bindParam(5, $y, PDO::PARAM_INT);
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$stmt->bindParam(6, $zoom, PDO::PARAM_INT);
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$res = $stmt->execute();
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list($timage, $format, $thash, $tlast) = $stmt->fetch();
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if ($res && $timage) {
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if ($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: \'' . $thash . '\'');
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header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $tlast / 1000) . ' GMT');
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echo stream_get_contents($timage);
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} else {
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header('Location: ../images/blank.png');
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}
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$stmt->closeCursor();
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cleanupDb();
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exit;
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