Files
Varaverk/Plugin/unraid/api/conf_toggle.php
T
Gmer4Lfe 987313e7dc Document the PHP api layer and fix what documenting it exposed
Writing down what each endpoint actually guarantees made the places it
didn't obvious — shell arguments reaching a crontab or a bash -c
unescaped, master.conf written without tmp+rename, and conf edits that
could be saved without ever being parsed.
2026-08-02 10:11:39 -04:00

80 lines
4.0 KiB
PHP

<?php
// ═══════════════════════════════════════════════════════════════════════════════════════════════
// PURPOSE
// Orchestrator membership toggle. Comments or uncomments one script's entry inside the
// *_SCRIPTS arrays in master.conf, so the scheduler page can take a script out of an
// orchestrator's run list without deleting it.
//
// OPERATIONAL MODEL
// This is not the same switch as the scheduler's enable/disable. Scheduler state controls
// whether a *cron entry* fires; this controls whether an orchestrator *calls a child
// script* during its own run. A script can be disabled here and still run, if another
// orchestrator lists it — unraid_api_key_renew.sh is deliberately in two arrays.
//
// The edit is a comment marker, not a deletion. The line stays in master.conf with its
// arguments and its position intact, so re-enabling restores exactly what was there before
// and a diff shows an intent change rather than a removal.
//
// DESIGN PRINCIPLES
// Only the first match is toggled.
// vv_conf_toggle_script() breaks after the first array entry it matches. A script
// listed in two orchestrators is not silently changed in both by one click.
//
// No match is success, not failure.
// A script that is not in any array has nothing to toggle and the conf is already in
// the requested state. Returning an error there would make the UI report a problem
// where none exists.
//
// OPERATIONAL SAFEGUARDS
// POST only, checked before any parameter is read.
//
// The id is pattern-matched and traversal-checked separately.
// ^[a-zA-Z0-9_./\-]+\.sh$ permits the Category/script.sh form the arrays actually use,
// so the slash cannot simply be banned — str_contains($id, '..') is therefore a second,
// explicit check rather than something folded into the pattern.
//
// The id is never used as a path.
// It reaches vv_conf_toggle_script() only as a preg_quote()d needle matched against
// existing lines in master.conf. Nothing is opened, executed, or created from it, so a
// value that slipped past validation still has no file to reach.
//
// The scope of the edit is bounded to array bodies.
// The library tracks whether it is inside a `*_SCRIPTS=(` block and skips every line
// outside one, so a matching string in a comment or an unrelated variable cannot be
// rewritten.
//
// The write is atomic.
// vv_conf_toggle_script() writes through vv_write_conf_raw() (tmp + rename). Every
// script sources master.conf; a truncated write here would be a system-wide outage
// rather than a lost toggle.
//
// REQUEST
// POST id=<Category/script.sh> enabled=0|1
//
// RESPONSE
// {"ok":true,"error":null}
// {"ok":false,"error":"POST only"|"Invalid id"|"Failed to write master.conf"}
//
// DEPENDS ON
// include/scheduler.php vv_conf_toggle_script() → vv_write_conf_raw()
// Configurations/master.conf the *_SCRIPTS arrays
// ═══════════════════════════════════════════════════════════════════════════════════════════════
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/scheduler.php';
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
echo json_encode(['ok' => false, 'error' => 'POST only']);
exit;
}
$id = trim($_POST['id'] ?? '');
$enabled = ($_POST['enabled'] ?? '0') === '1';
if (!$id || !preg_match('/^[a-zA-Z0-9_.\/\-]+\.sh$/', $id) || str_contains($id, '..')) {
echo json_encode(['ok' => false, 'error' => 'Invalid id']);
exit;
}
$ok = vv_conf_toggle_script($id, $enabled);
echo json_encode(['ok' => $ok, 'error' => $ok ? null : 'Failed to write master.conf']);