index.php

<?php

/**
 * search for a themed filename or return distribution standard
 * @param string $url relative url
 * @param array $theme theme name
 * @return string
 */
function view_fetch_themed_filename($url, $theme)
{
    $search_pattern = array(
        "/themes/{$theme}/build/",
        "/"
    );
    foreach ($search_pattern as $pattern) {
        $filename = __DIR__ . "{$pattern}{$url}";
        if (file_exists($filename)) {
            return str_replace("//", "/", "/ui{$pattern}{$url}");
        }
    }
    return $url; // not found, return source
}

/**
 * check if file exists, wrapper around file_exists() so services.php can define other implementation for local testing
 * @param string $filename to check
 * @return boolean
 */
function view_file_exists($filename)
{
    return file_exists($filename);
}

/**
 * return appended version string with a hash for proper caching for currently installed version
 * @param string $url to make cache-safe
 * @return string
 */
function view_cache_safe($url)
{
    $info = stat('/usr/local/opnsense/www/index.php');
    if (!empty($info['mtime'])) {
        return "{$url}?v=" . substr(md5($info['mtime']), 0, 16);
    }

    return $url;
}

/**
 * return safe HTML encoded version of input string
 * @param string $text to make HTML safe
 * @return string
 */
function view_html_safe($text)
{
    /* gettext() embedded in JavaScript can cause syntax errors */
    return str_replace("\n", '&#10;', htmlspecialchars($text ?? '', ENT_QUOTES | ENT_HTML401));
}

try {
    $config = include __DIR__ . "/../mvc/app/config/config.php";
    include __DIR__ . "/../mvc/app/config/loader.php";

    $router = new OPNsense\Mvc\Router('/ui/');
    $uri = str_replace('/?url=', '', $_SERVER['REQUEST_URI']);
    try {

        $response = $router->routeRequest($uri, [
            'controller' => 'IndexController',
            'action' => 'indexAction',
        ]);
    } catch (\OPNsense\Mvc\Exceptions\DispatchException $ex) {
        var_dump($ex);
        exit();
        // unroutable (page not found), present page not found controller
        $response = $router->routeRequest('/ui/core/index/index');
    }

    if (!$response->isSent()) {
        $headers = $response->getHeaders()->getHeaders();
        foreach ($headers as $key => $header) {
            if (count($headers) === 1 && strtolower($key) === 'location') {
                if ($header === "/?url=$uri") {
                    echo 'recursive redirect to "'.$header.'" skipped</br>';
                    echo 'response object:</br>';
                    var_dump($response);
                    exit();
                }
            }
        }
        $response->send();
    }
} catch (\Error | \Exception $e) {
    error_log($e);

    header('Location: /crash_reporter.php', true, 303);
}