BlueMapVue/public/_index.php

<?php

// !!! SET YOUR SQL-CONNECTION SETTINGS HERE: !!!

$hostname = "127.0.0.1";
$port     = 3306;
$username = "root";
$password = "";
$database = "bluemap";

// set this to "none" if you disabled compression on your maps
$hiresCompression = "gzip"; 

// !!! END - DONT CHANGE ANYTHING AFTER THIS LINE !!!





// some helper functions
function error($code, $message = null) {
    global $path;

    http_response_code($code);
    header("Content-Type: text/plain");
    echo "BlueMap php-script - $code\n";
    if ($message != null) echo $message."\n";
    echo "Requested Path: $path";
    exit;
}

function startsWith($haystack, $needle) {
    return substr($haystack, 0, strlen($needle)) === $needle;
}


// determine relative request-path
$root = dirname($_SERVER['PHP_SELF']);
if ($root === "/") $root = "";
$uriPath = $_SERVER['REQUEST_URI'];
$path = substr($uriPath, strlen($root));

// add / 
if ($path === "") {
    header("Location: $uriPath/");
    exit;
}

// root => index.html
if ($path === "/") {
    header("Content-Type: text/html");
    echo file_get_contents("index.html");
    exit;
}

if (startsWith($path, "/maps/")) {

    // determine map-path
    $pathParts = explode("/", substr($path, strlen("/maps/")), 2);
    $mapId = $pathParts[0];
    $mapPath = $pathParts[1];

    // get sql-connection
    $sql = new mysqli($hostname, $username, $password, $database, $port);
    if ($sql->errno) error(500, "Failed to connect to Database!");

    // meta-files
    $metaFiles = [
        "textures.json" => "textures",
        "settings.json" => "settings",
        "live/markers" => "markers",
        "live/players" => "players"
    ];

    // provide meta-files
    foreach ($metaFiles as $metaFilePath => $metaKey) {
        if (startsWith($mapPath, $metaFilePath)) {
            $statement = $sql->prepare("
                SELECT t.`value` 
                FROM `bluemap_map_meta` t
                 INNER JOIN `bluemap_map` m
                  ON t.`map` = m.`id`
                WHERE m.`map_id` = ?
                AND t.`key` = ?
            ");
            $statement->bind_param("ss", $mapId, $metaKey);
            $statement->execute();
            if ($statement->errno) error(500, "Database query failed!");

            $result = $statement->get_result();
            if ($result && $line = $result->fetch_assoc()) {
                header("Content-Type: application/json");
                echo $line["value"];
                exit;
            }
        }
    }

    // provide map-tiles
    if (startsWith($mapPath, "tiles/")) {

        // parse tile-coordinates
        preg_match_all("/tiles\/([\d\/]+)\/x(-?[\d\/]+)z(-?[\d\/]+).*/", $mapPath, $matches);
        $lod = intval($matches[1][0]);
        $tileX = intval(str_replace("/", "", $matches[2][0]));
        $tileZ = intval(str_replace("/", "", $matches[3][0]));
        $compression = $lod === 0 ? $hiresCompression : "none";

        // query for tile
        $statement = $sql->prepare("
            SELECT t.`data`
            FROM `bluemap_map_tile` t
             INNER JOIN `bluemap_map` m
              ON t.`map` = m.`id`
             INNER JOIN `bluemap_map_tile_compression` c
              ON t.`compression` = c.`id`
            WHERE m.`map_id` = ?
            AND t.`lod` = ?
            AND t.`x` = ?
            AND t.`z` = ?
            AND c.`compression` = ?
        ");
        $statement->bind_param("siiis", $mapId, $lod, $tileX, $tileZ, $compression);
        $statement->execute();
        if ($statement->errno) error(500, "Database query failed!");

        // return result
        $result = $statement->get_result();
        if ($result && $line = $result->fetch_assoc()) {
            if ($compression !== "none")
                header("Content-Encoding: $compression");

            if ($lod === 0) {
                header("Content-Type: application/json");
            } else {
                header("Content-Type: image/png");
            }

            echo $line["data"];
            exit;
        }

    }

    // empty json response if nothing found
    header("Content-Type: application/json");
    echo "{}";
    exit;

}

// no match => 404
error(404);