Varaverk/Plugin/unraid/Varaverk.page

Menu="Tasks:95"
Title="Varaverk"
Icon="varaverk.png"
---
<?php
$plugin  = 'varaverk';
$docroot = $docroot ?? $_SERVER['DOCUMENT_ROOT'] ?: '/usr/local/emhttp';
$pluginDir = "$docroot/plugins/$plugin";

require_once "$pluginDir/include/config.php";
?>

<script>
// ═══════════════════════════════════════════════════════════════════════════════════════════════
// CSRF token propagation — must run before any page JS.
//
// Unraid enforces CSRF centrally: /etc/php.ini sets auto_prepend_file to webGui's
// local_prepend.php, which terminates *every* POST that does not carry a valid token, before a
// single line of endpoint code runs. It accepts the token as a `csrf_token` POST field or as an
// X-CSRF-Token header.
//
// The webGUI's own injector is jQuery-only ($.ajaxPrefilter in HeadInlineJS.php). Varaverk's
// pages use native fetch(), which that prefilter does not touch — so without this shim every
// mutating request in the plugin is silently killed by the platform. Silently, because
// csrf_terminate() exits with no body: the fetch resolves, r.json() throws on the empty
// response, and the page's own .catch() swallows it.
//
// Setting the header rather than appending a body field is deliberate. It works identically for
// FormData, URLSearchParams and raw JSON bodies, so no call site has to know about it and a new
// endpoint cannot forget to include it. The header is only ever attached to same-origin
// Varaverk URLs; a cross-origin page cannot set a custom header without a preflight it will
// fail, which is precisely what makes this a CSRF defence rather than a formality.
//
// Inline, and above the tab content, because pages/*.php carry their own inline fetch calls and
// some fire on load — an external script could not be guaranteed to install first.
// ═══════════════════════════════════════════════════════════════════════════════════════════════
(function () {
  if (window.__vvCsrfInstalled) return;
  window.__vvCsrfInstalled = true;

  var nativeFetch = window.fetch.bind(window);

  window.fetch = function (input, init) {
    var url = (typeof input === 'string') ? input : (input && input.url) || '';

    if (url.indexOf('/plugins/varaverk/') !== -1 &&
        typeof csrf_token !== 'undefined' && csrf_token) {
      init = init || {};
      var headers = new Headers(init.headers || (typeof input === 'object' && input.headers) || {});
      if (!headers.has('X-CSRF-Token')) headers.set('X-CSRF-Token', csrf_token);
      init = Object.assign({}, init, { headers: headers });
    }

    return nativeFetch(input, init);
  };
})();

// ═══════════════════════════════════════════════════════════════════════════════════════════════
// Escaping helpers — shared, because every page builds HTML strings and assigns them to innerHTML.
//
// Defined here rather than per page for the reason the CSRF shim is: only one pages/*.php is ever
// included per request, so a helper defined inside one page does not exist for any other. That is
// not a hypothetical — these lived in pages/scheduler.php, and pages/monitor.php rendered media
// titles, partner hostnames and docker folder names straight into innerHTML with no escaping
// available to it at all.
//
// Not in js/varaverk.js, which would otherwise be the obvious home: that file is loaded by a
// src-tag *below* the tab include, so it is not defined yet while a page's inline script is
// running. The shared formatters there survive only because every caller is inside a fetch
// callback. An escaping helper must be callable from the first synchronous line of a page.
//
// Never write a literal script tag inside this block, not even in a comment. The tab body is
// injected into the page by the webGUI rather than parsed as part of the document, and the
// opening sequence ends this element early wherever it appears — the whole file then renders as
// visible text and every tab loads dead. That is not theoretical: the comment above said it with
// real angle brackets and took the monitor tab down on 2026-08-07.
//
// String() rather than assuming a string: these are fed payload fields that are frequently
// numbers, and sometimes null or undefined. A helper that throws on a number is a helper call
// sites will skip.
//
// Two functions because the contexts differ, and using the wrong one is silent:
//   vvEscHtml  text between tags.       Leaves " alone — harmless there.
//   vvEscAttr  text inside an attribute. Escapes " as well, because a quote inside a
//              double-quoted attribute ends it early and destroys the rest of the handler.
// ═══════════════════════════════════════════════════════════════════════════════════════════════
function vvEscHtml(s) {
  return String(s ?? '').replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
}
function vvEscAttr(s) {
  return String(s ?? '').replace(/&/g,'&amp;').replace(/"/g,'&quot;')
                        .replace(/</g,'&lt;').replace(/>/g,'&gt;');
}

// A URL about to be put in href/src or handed to window.open. Anything that is not plainly http,
// https or a site-relative path becomes empty — javascript: is the one that matters, and an
// allowlist is the only way to say that without chasing encodings. include/docs.php applies the
// same rule to markdown links; container WebUI values, which come from template XML, had no such
// check before reaching window.open().
function vvSafeUrl(u) {
  const s = String(u ?? '').trim();
  if (s === '') return '';
  if (/^https?:\/\//i.test(s)) return s;
  if (/^\/(?!\/)/.test(s))     return s;
  return '';
}
</script>

<?php
// First-run check — show setup wizard if HOST1 is blank OR local host.conf is missing
$_master = vv_read_conf_raw('master.conf');
preg_match('/^\s*HOST1\s*=\s*"([^"]*)"/m', $_master, $_h1m);
$_host1_blank  = empty(trim($_h1m[1] ?? ''));
$_my_hostid    = vv_detect_host();
$_conf_missing = $_my_hostid !== 'unknown'
    && !file_exists(CONF_DIR . '/' . $_my_hostid . '.conf');
if ($_host1_blank || $_conf_missing) {
    include "$pluginDir/pages/setup.php";
    return;
}
unset($_master, $_h1m, $_host1_blank, $_my_hostid, $_conf_missing);

// Determine active tab
$tab = $_GET['tab'] ?? 'monitor';
$validTabs = ['monitor', 'scheduler', 'docker', 'watchdog', 'partnership', 'fallback', 'arrs', 'rsync', 'auth', 'settings'];

// The AI tab exists only on HOST1, and only while AI_ENABLED is true. Appended to $validTabs
// rather than filtered out of it, so the check below rejects ?tab=ai server-side as well —
// omitting the link is presentation, not access control, and api/ai.php refuses every action
// on the same two conditions independently.
//
// The host half is not a preference: HOST1 owns the GPU, the Ollama process and the index, and
// include/ai.php only ever reads the *local* {HOST}_OLLAMA_URL — there is no Tailscale resolver
// in the PHP layer the way there is in the shell. On any other host the tab could only render
// and then fail its own health check.
$_vv_ai = vv_ai_ui_on();
if ($_vv_ai) $validTabs[] = 'ai';

if (!in_array($tab, $validTabs)) $tab = 'monitor';
$tabLabels = ['monitor' => 'Monitor', 'scheduler' => 'Scheduler', 'docker' => 'Docker', 'watchdog' => 'Watchdog', 'partnership' => 'Partnership', 'fallback' => 'FallBack', 'arrs' => 'Arrs', 'rsync' => 'Rsync', 'auth' => 'Auth Stack', 'settings' => 'Settings', 'ai' => 'AI'];
?>

<link rel="stylesheet" href="/plugins/<?=$plugin?>/css/varaverk.css">

<div id="varaverk-wrap" class="unapi">

  <!-- Tab bar -->
  <div id="vv-tabs">
    <?php foreach ($validTabs as $t): ?>
      <a href="?tab=<?=$t?>" class="localURL vv-tab<?= $t === $tab ? ' active' : '' ?>">
        <?= $tabLabels[$t] ?? ucfirst($t) ?>
      </a>
    <?php endforeach; ?>
    <div style="margin-left:auto;display:flex;align-items:center;gap:2px;">
      <a href="https://github.com/FailedProxy/Varaverk" target="_blank"
         style="padding:0 10px;font-size:10px;color:#333;text-decoration:none;
                display:flex;align-items:center;letter-spacing:.03em;"
         title="GitHub — source, issues, changelog">
        ⎋ GitHub
      </a>
      <button id="vv-expand-btn" type="button" onclick="vvToggleExpand()" title="Expand">⤢</button>
    </div>
  </div>

  <!-- Tab content -->
  <div id="vv-content">
    <?php
      $page = "$pluginDir/pages/$tab.php";
      if (file_exists($page)) include $page;
      else echo "<p>Page not found: $tab</p>";
    ?>
  </div>

</div>

<script src="/plugins/<?=$plugin?>/js/varaverk.js"></script>