0.9.6.30: globales Lauf-Lock gegen Parallelstarts

0.9.6.29: Shadowtree stabilisieren

include/nc_connector_scheduler.inc.php

@@ -0,0 +1,165 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_scheduler_paths()
+{
+  $base = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools';
+  return array(
+    'base'=>$base,
+    'runtime'=>$base.'/nc-connector-runtime',
+    'state_root'=>$base.'/nc-connector-state',
+    'scheduler'=>$base.'/nc-connector-scheduler',
+    'state'=>$base.'/nc-connector-scheduler/state.json',
+    'trigger_lock'=>$base.'/nc-connector-scheduler/trigger.lock',
+    'worker_lock'=>$base.'/nc-connector-scheduler/worker.lock',
+    'log'=>$base.'/nc-connector-scheduler/last-worker.log',
+  );
+}
+
+function bratonien_tools_nc_scheduler_interval()
+{
+  global $conf;
+  $interval = isset($conf['bratonien_nc_scheduler_interval']) ? (int)$conf['bratonien_nc_scheduler_interval'] : 60;
+  return max(60, $interval);
+}
+
+function bratonien_tools_nc_scheduler_ensure_dirs()
+{
+  foreach (bratonien_tools_nc_scheduler_paths() as $key=>$path)
+  {
+    if (in_array($key, array('state','trigger_lock','worker_lock','log'), true)) continue;
+    if (!is_dir($path) && !@mkdir($path, 0750, true) && !is_dir($path))
+    {
+      return false;
+    }
+  }
+  return true;
+}
+
+function bratonien_tools_nc_scheduler_read_state()
+{
+  $paths = bratonien_tools_nc_scheduler_paths();
+  if (!is_readable($paths['state'])) return array();
+  $decoded = json_decode((string)@file_get_contents($paths['state']), true);
+  return is_array($decoded) ? $decoded : array();
+}
+
+function bratonien_tools_nc_scheduler_write_state(array $state)
+{
+  $paths = bratonien_tools_nc_scheduler_paths();
+  if (!bratonien_tools_nc_scheduler_ensure_dirs()) return false;
+  $json = json_encode($state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+  if (!is_string($json)) return false;
+  $tmp = $paths['state'].'.tmp';
+  if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false) return false;
+  @chmod($tmp, 0640);
+  return @rename($tmp, $paths['state']);
+}
+
+function bratonien_tools_nc_scheduler_install()
+{
+  if (!bratonien_tools_nc_scheduler_ensure_dirs()) return false;
+  $state = bratonien_tools_nc_scheduler_read_state();
+  if (empty($state['next_due']))
+  {
+    $state['next_due'] = time();
+    $state['enabled'] = true;
+    $state['mode'] = 'piwigo-native';
+    bratonien_tools_nc_scheduler_write_state($state);
+  }
+  return true;
+}
+
+function bratonien_tools_nc_scheduler_php_binary()
+{
+  foreach (array('/usr/bin/php', '/usr/local/bin/php', PHP_BINARY) as $candidate)
+  {
+    if (is_string($candidate) && $candidate !== '' && is_executable($candidate)) return $candidate;
+  }
+  return '';
+}
+
+function bratonien_tools_nc_scheduler_spawn($force = false)
+{
+  $paths = bratonien_tools_nc_scheduler_paths();
+  if (!bratonien_tools_nc_scheduler_ensure_dirs())
+  {
+    throw new RuntimeException('Der native NC-Scheduler kann sein Laufzeitverzeichnis nicht anlegen.');
+  }
+
+  $lock = @fopen($paths['trigger_lock'], 'c+');
+  if (!is_resource($lock) || !@flock($lock, LOCK_EX | LOCK_NB))
+  {
+    if (is_resource($lock)) fclose($lock);
+    return array('started'=>false, 'message'=>'Ein NC-Abgleich wird bereits vorbereitet.');
+  }
+
+  $state = bratonien_tools_nc_scheduler_read_state();
+  $now = time();
+  $next_due = (int)($state['next_due'] ?? 0);
+  if (!$force && $next_due > $now)
+  {
+    @flock($lock, LOCK_UN);
+    fclose($lock);
+    return array('started'=>false, 'message'=>'Der nächste NC-Abgleich ist noch nicht fällig.');
+  }
+
+  $php = bratonien_tools_nc_scheduler_php_binary();
+  if ($php === '')
+  {
+    @flock($lock, LOCK_UN);
+    fclose($lock);
+    throw new RuntimeException('Kein ausführbares PHP-CLI für den nativen NC-Scheduler gefunden.');
+  }
+
+  $state['enabled'] = true;
+  $state['mode'] = 'piwigo-native';
+  $state['queued_at'] = $now;
+  $state['next_due'] = $now + bratonien_tools_nc_scheduler_interval();
+  bratonien_tools_nc_scheduler_write_state($state);
+
+  $runner = BRATONIEN_TOOLS_PATH.'runtime/native-runner.php';
+  $command = escapeshellarg($php).' '.escapeshellarg($runner).' >> '.escapeshellarg($paths['log']).' 2>&1 &';
+  $spec = array(
+    0=>array('file','/dev/null','r'),
+    1=>array('file','/dev/null','a'),
+    2=>array('file','/dev/null','a'),
+  );
+  $process = function_exists('proc_open') ? @proc_open(array('/bin/sh','-c',$command), $spec, $pipes) : false;
+  $exit = is_resource($process) ? proc_close($process) : 1;
+
+  @flock($lock, LOCK_UN);
+  fclose($lock);
+
+  if ($exit !== 0)
+  {
+    throw new RuntimeException('Der native NC-Abgleich konnte nicht gestartet werden.');
+  }
+
+  return array('started'=>true, 'message'=>'NC-Abgleich wurde gestartet.');
+}
+
+function bratonien_tools_nc_scheduler_tick()
+{
+  $state = bratonien_tools_nc_scheduler_read_state();
+  if (isset($state['enabled']) && !$state['enabled']) return;
+  $next_due = (int)($state['next_due'] ?? 0);
+  if ($next_due > time()) return;
+
+  try
+  {
+    bratonien_tools_nc_scheduler_spawn(false);
+  }
+  catch (Throwable $e)
+  {
+    $state = bratonien_tools_nc_scheduler_read_state();
+    $state['state'] = 'error';
+    $state['message'] = $e->getMessage();
+    $state['timestamp'] = time();
+    $state['next_due'] = time() + bratonien_tools_nc_scheduler_interval();
+    bratonien_tools_nc_scheduler_write_state($state);
+  }
+}

include/nc_connector_system.inc.php

@@ -4,109 +4,13 @@ if (!defined('PHPWG_ROOT_PATH'))
   die('Hacking attempt!');
 }
 
-function bratonien_tools_nc_connector_systemctl_value(array $args)
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
-{
-  if (!function_exists('proc_open'))
-  {
-    return '';
-  }
-
-  $command = array_merge(array('/usr/bin/systemctl'), $args);
-  $spec = array(
-    0 => array('file', '/dev/null', 'r'),
-    1 => array('pipe', 'w'),
-    2 => array('pipe', 'w'),
-  );
-  $environment = array_merge($_ENV, array('LC_ALL'=>'C', 'LANG'=>'C'));
-  $process = @proc_open($command, $spec, $pipes, null, $environment);
-  if (!is_resource($process))
-  {
-    return '';
-  }
-  $stdout = stream_get_contents($pipes[1]);
-  stream_get_contents($pipes[2]);
-  fclose($pipes[1]);
-  fclose($pipes[2]);
-  $exit = proc_close($process);
-  return $exit === 0 ? trim((string)$stdout) : '';
-}
-
-function bratonien_tools_nc_connector_parse_systemd_time($value)
-{
-  $value = trim((string)$value);
-  if ($value === '' || strtolower($value) === 'n/a')
-  {
-    return 0;
-  }
-  $parsed = strtotime($value);
-  return $parsed === false ? 0 : (int)$parsed;
-}
-
-function bratonien_tools_nc_connector_monotonic_to_timestamp($value)
-{
-  $value = trim((string)$value);
-  if ($value === '' || $value === '0' || strtolower($value) === 'n/a')
-  {
-    return 0;
-  }
-
-  if (preg_match('/^([0-9]+)(?:us)?$/', $value, $matches))
-  {
-    $next_boot_seconds = ((float)$matches[1]) / 1000000;
-  }
-  else
-  {
-    return 0;
-  }
-
-  $uptime_raw = @file_get_contents('/proc/uptime');
-  if (!is_string($uptime_raw) || !preg_match('/^([0-9]+(?:\.[0-9]+)?)/', trim($uptime_raw), $uptime_match))
-  {
-    return 0;
-  }
-
-  $remaining = $next_boot_seconds - (float)$uptime_match[1];
-  if ($remaining < -1)
-  {
-    return 0;
-  }
-
-  return (int)round(time() + max(0, $remaining));
-}
-
-function bratonien_tools_nc_connector_next_from_timer_list($timer)
-{
-  $line = bratonien_tools_nc_connector_systemctl_value(array(
-    'list-timers', '--all', '--no-pager', '--no-legend', $timer,
-  ));
-  if ($line === '')
-  {
-    return 0;
-  }
-
-  $first_line = trim((string)strtok($line, "\n"));
-  if (preg_match('/^(\S+\s+\d{4}-\d{2}-\d{2}\s+\d{2}:\d{2}:\d{2}\s+\S+)/', $first_line, $matches))
-  {
-    $parsed = strtotime($matches[1]);
-    return $parsed === false ? 0 : (int)$parsed;
-  }
-
-  return 0;
-}
 
 function bratonien_tools_nc_connector_connection_last_status(array $connection)
 {
   $empty = array(
-    'timestamp'=>0,
+    'timestamp'=>0,'label'=>'Nicht verfügbar','state'=>'','message'=>'','auth_mode'=>'',
-    'label'=>'Nicht verfügbar',
+    'api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'',
-    'state'=>'',
-    'message'=>'',
-    'auth_mode'=>'',
-    'api_state'=>'',
-    'api_message'=>'',
-    'fallback_state'=>'',
-    'fallback_message'=>'',
-    'error_detail'=>'',
   );
 
   $connection_id = (int)($connection['id'] ?? 0);
@@ -114,42 +18,25 @@ function bratonien_tools_nc_connector_connection_last_status(array $connection)
   if ($connection_id > 0)
   {
     $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-status/connection-'.$connection_id.'.json';
+    $candidates[] = rtrim(PHPWG_ROOT_PATH, '/').'/_data/bratonien-tools/nc-connector-state/connection-'.$connection_id.'/connector-status.json';
   }
 
   $config = isset($connection['config']) && is_array($connection['config']) ? $connection['config'] : array();
   $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
-  if ($state_dir === '' && $connection_id > 0)
+  if ($state_dir !== '') $candidates[] = $state_dir.'/connector-status.json';
-  {
-    $state_dir = '/var/lib/bratonien-tools/nc-connector/connection-'.$connection_id;
-  }
-  if ($state_dir !== '')
-  {
-    $candidates[] = $state_dir.'/connector-status.json';
-  }
 
   $decoded = null;
-  foreach ($candidates as $candidate)
+  foreach (array_unique($candidates) as $candidate)
   {
-    if (!is_readable($candidate))
+    if (!is_readable($candidate)) continue;
-    {
-      continue;
-    }
     $value = json_decode((string)@file_get_contents($candidate), true);
-    if (is_array($value))
+    if (is_array($value)) { $decoded = $value; break; }
-    {
-      $decoded = $value;
-      break;
-    }
-  }
-  if (!is_array($decoded))
-  {
-    return $empty;
   }
+  if (!is_array($decoded)) return $empty;
 
   $timestamp = (int)($decoded['timestamp'] ?? 0);
   $api = isset($decoded['api']) && is_array($decoded['api']) ? $decoded['api'] : array();
   $fallback = isset($decoded['fallback']) && is_array($decoded['fallback']) ? $decoded['fallback'] : array();
-
   return array(
     'timestamp'=>$timestamp,
     'label'=>$timestamp > 0 ? date('d.m.Y H:i:s', $timestamp) : 'Nicht verfügbar',
@@ -166,99 +53,69 @@ function bratonien_tools_nc_connector_connection_last_status(array $connection)
 
 function bratonien_tools_nc_connector_last_status(array $connections)
 {
-  $latest = array('timestamp'=>0, 'state'=>'', 'message'=>'', 'auth_mode'=>'', 'api_state'=>'', 'api_message'=>'', 'fallback_state'=>'', 'fallback_message'=>'', 'error_detail'=>'');
+  $latest = array('timestamp'=>0,'state'=>'','message'=>'','auth_mode'=>'','api_state'=>'','api_message'=>'','fallback_state'=>'','fallback_message'=>'','error_detail'=>'');
-
   foreach ($connections as $connection)
   {
-    if (empty($connection['enabled']))
+    if (empty($connection['enabled'])) continue;
-    {
-      continue;
-    }
-
     $status = bratonien_tools_nc_connector_connection_last_status($connection);
-    if ((int)$status['timestamp'] >= (int)$latest['timestamp'])
+    if ((int)$status['timestamp'] >= (int)$latest['timestamp']) $latest = $status;
-    {
-      $latest = $status;
-    }
   }
-
   return $latest;
 }
 
 function bratonien_tools_nc_connector_system_status(array $connections = array())
 {
-  $timer = 'bratonien-nc-connector.timer';
+  $scheduler = bratonien_tools_nc_scheduler_read_state();
-  $service = 'bratonien-nc-connector.service';
+  $enabled = !isset($scheduler['enabled']) || !empty($scheduler['enabled']);
-
+  $running = (string)($scheduler['state'] ?? '') === 'running';
-  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active', $timer));
+  $started = (int)($scheduler['started_at'] ?? 0);
-  $enabled = bratonien_tools_nc_connector_systemctl_value(array('is-enabled', $timer));
+  $next = (int)($scheduler['next_due'] ?? 0);
-  $service_active_raw = bratonien_tools_nc_connector_systemctl_value(array('is-active', $service));
-  $service_active = in_array($service_active_raw, array('active', 'activating'), true);
-  $service_started_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $service, '--property=ActiveEnterTimestamp', '--value'));
-  $service_started_timestamp = bratonien_tools_nc_connector_parse_systemd_time($service_started_raw);
-
-  $next_realtime_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecRealtime', '--value'));
-  $next_timestamp = bratonien_tools_nc_connector_parse_systemd_time($next_realtime_raw);
-
-  if ($next_timestamp <= 0)
-  {
-    $next_monotonic_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecMonotonic', '--value'));
-    $next_timestamp = bratonien_tools_nc_connector_monotonic_to_timestamp($next_monotonic_raw);
-  }
-
-  if ($next_timestamp <= 0)
-  {
-    $next_timestamp = bratonien_tools_nc_connector_next_from_timer_list($timer);
-  }
-
   $last = bratonien_tools_nc_connector_last_status($connections);
-  if ($last['timestamp'] <= 0)
-  {
-    $last_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $service, '--property=ExecMainExitTimestamp', '--value'));
-    $last['timestamp'] = bratonien_tools_nc_connector_parse_systemd_time($last_raw);
-  }
 
-  if ($next_timestamp > 0)
+  if ($next > 0)
   {
-    $next_label = date('d.m.Y H:i:s', $next_timestamp);
+    $next_label = date('d.m.Y H:i:s', $next).' (beim nächsten Piwigo-Aufruf)';
-  }
-  elseif ($service_active && $active === 'active' && $enabled === 'enabled')
-  {
-    $next_label = 'Nach Abschluss des aktuellen Laufs';
-  }
-  elseif ($active === 'active' && $enabled === 'enabled')
-  {
-    $next_label = 'Wird von systemd neu geplant';
   }
   else
   {
-    $next_label = 'Nicht verfügbar';
+    $next_label = 'Beim nächsten Piwigo-Aufruf';
+  }
+
+  if ((int)$last['timestamp'] <= 0 && !empty($scheduler['finished_at']))
+  {
+    $last['timestamp'] = (int)$scheduler['finished_at'];
+    $last['state'] = (string)($scheduler['state'] ?? '');
+    $last['message'] = (string)($scheduler['message'] ?? '');
+    if ((string)$last['state'] === 'error')
+    {
+      $detail = trim((string)($scheduler['stderr'] ?? ''));
+      if ($detail === '') $detail = trim((string)($scheduler['stdout'] ?? ''));
+      $last['error_detail'] = $detail;
+    }
   }
 
   return array(
-    'timer_name' => $timer,
+    'timer_name'=>'Piwigo nativer NC-Scheduler',
-    'timer_active' => $active === 'active',
+    'timer_active'=>$enabled,
-    'timer_enabled' => $enabled === 'enabled',
+    'timer_enabled'=>$enabled,
-    'service_active' => $service_active,
+    'service_active'=>$running,
-    'current_run_timestamp' => $service_started_timestamp,
+    'current_run_timestamp'=>$started,
-    'current_run_label' => $service_active
+    'current_run_label'=>$running ? ($started > 0 ? 'Läuft seit '.date('d.m.Y H:i:s', $started) : 'Läuft gerade') : 'Kein Lauf aktiv',
-      ? ($service_started_timestamp > 0 ? 'Läuft seit '.date('d.m.Y H:i:s', $service_started_timestamp) : 'Läuft gerade')
+    'last_run_timestamp'=>(int)$last['timestamp'],
-      : 'Kein Lauf aktiv',
+    'last_run_label'=>(int)$last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
-    'last_run_timestamp' => (int)$last['timestamp'],
+    'last_run_state'=>(string)$last['state'],
-    'last_run_label' => $last['timestamp'] > 0 ? date('d.m.Y H:i:s', (int)$last['timestamp']) : 'Nicht verfügbar',
+    'last_run_message'=>(string)$last['message'],
-    'last_run_state' => (string)$last['state'],
+    'last_run_auth_mode'=>(string)$last['auth_mode'],
-    'last_run_message' => (string)$last['message'],
+    'last_run_api_state'=>(string)$last['api_state'],
-    'last_run_auth_mode' => (string)$last['auth_mode'],
+    'last_run_api_message'=>(string)$last['api_message'],
-    'last_run_api_state' => (string)$last['api_state'],
+    'last_run_fallback_state'=>(string)$last['fallback_state'],
-    'last_run_api_message' => (string)$last['api_message'],
+    'last_run_fallback_message'=>(string)$last['fallback_message'],
-    'last_run_fallback_state' => (string)$last['fallback_state'],
+    'last_run_error_detail'=>(string)$last['error_detail'],
-    'last_run_fallback_message' => (string)$last['fallback_message'],
+    'next_run_timestamp'=>$next,
-    'last_run_error_detail' => (string)$last['error_detail'],
+    'next_run_label'=>$next_label,
-    'next_run_timestamp' => $next_timestamp,
+    'legacy_runtime_exists'=>is_dir('/opt/piwigo-sync'),
-    'next_run_label' => $next_label,
+    'legacy_config_exists'=>is_dir('/etc/piwigo-sync'),
-    'legacy_runtime_exists' => is_dir('/opt/piwigo-sync'),
+    'legacy_service_exists'=>is_file('/etc/systemd/system/piwigo-sync.service'),
-    'legacy_config_exists' => is_dir('/etc/piwigo-sync'),
+    'legacy_timer_exists'=>is_file('/etc/systemd/system/piwigo-sync.timer'),
-    'legacy_service_exists' => is_file('/etc/systemd/system/piwigo-sync.service'),
-    'legacy_timer_exists' => is_file('/etc/systemd/system/piwigo-sync.timer'),
   );
 }

include/nc_productive_ws.inc.php

@@ -62,18 +62,12 @@ SELECT id, dir, name
       OR LOWER(name) = LOWER(\''.$name_sql.'\')
     )
   ORDER BY CASE WHEN dir = \''.$dir_sql.'\' THEN 0 ELSE 1 END, id
+  LIMIT 1
 ;';
   $result = pwg_query($query);
-  $ids = array();
+  if (!pwg_db_num_rows($result)) return null;
-  while ($row = pwg_db_fetch_assoc($result))
+  $row = pwg_db_fetch_assoc($result);
-  {
+  return (int)$row['id'];
-    $ids[] = (int)$row['id'];
-  }
-  if (count($ids) > 1)
-  {
-    throw new RuntimeException('Albumzuordnung ist mehrdeutig fuer "'.$name.'".');
-  }
-  return count($ids) === 1 ? $ids[0] : null;
 }
 
 function bratonien_tools_nc_ensure_album_path($relative_dir, $excluded_site_id, array &$cache, array &$created_ids)
@@ -175,10 +169,6 @@ function bratonien_tools_ws_nc_sync_productive($params, &$service)
 
   try
   {
-    // Older WebDAV builds created a complete physical album tree for their own
-    // Piwigo site. Remove that technical duplicate first. The WebDAV files are
-    // placeholders and are rebuilt independently, therefore database deletion
-    // must not remove the actual Nextcloud originals.
     $counts['removed_duplicate_categories'] = bratonien_tools_nc_remove_storage_categories($site_id);
 
     list($dbnow) = pwg_db_fetch_row(pwg_query('SELECT NOW()'));
@@ -286,7 +276,6 @@ function bratonien_tools_ws_nc_sync_productive($params, &$service)
       $counts['new_elements'] = count($new_ids);
     }
 
-    // Refresh the normal file attributes for connector-managed images only.
     $updates = array();
     foreach ($all_ids as $id)
     {

include/tool_registry.inc.php

@@ -6,7 +6,7 @@ if (!defined('PHPWG_ROOT_PATH'))
 
 if (isset($GLOBALS['template']) && is_object($GLOBALS['template']) && method_exists($GLOBALS['template'], 'func_combine_script'))
 {
-  $script_version = function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.6.27';
+  $script_version = function_exists('bratonien_tools_current_version') ? bratonien_tools_current_version() : '0.9.6.30';
   $GLOBALS['template']->func_combine_script(array(
     'id'=>'bratonien_nc_connector_edit_v2',
     'path'=>BRATONIEN_TOOLS_PATH.'js/nc_connector_edit_v2.js',
@@ -41,57 +41,13 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_delete_safe.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_webdav.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_wizard_webdav_flow.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_edit.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_system.inc.php');
 
 function bratonien_tools_nc_connector_run_now()
 {
-  $service = 'bratonien-nc-connector.service';
+  $result = bratonien_tools_nc_scheduler_spawn(true);
-  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active', $service));
+  return array('message'=>(string)($result['message'] ?? 'NC-Abgleich wurde gestartet.'));
-  if ($active === 'active' || $active === 'activating')
-  {
-    return array('message'=>'Der NC-Abgleich läuft bereits.');
-  }
-
-  if (!function_exists('proc_open'))
-  {
-    throw new RuntimeException('Der NC-Abgleich konnte nicht gestartet werden: proc_open ist nicht verfügbar.');
-  }
-
-  $commands = array(
-    array('/usr/bin/sudo', '-n', '/usr/bin/systemctl', 'start', '--no-block', $service),
-    array('/usr/bin/systemctl', 'start', '--no-block', $service),
-  );
-  $last_error = '';
-
-  foreach ($commands as $command)
-  {
-    if (!is_executable($command[0]))
-    {
-      continue;
-    }
-    $spec = array(
-      0=>array('file','/dev/null','r'),
-      1=>array('pipe','w'),
-      2=>array('pipe','w'),
-    );
-    $process = @proc_open($command, $spec, $pipes, null, array_merge($_ENV, array('LC_ALL'=>'C','LANG'=>'C')));
-    if (!is_resource($process))
-    {
-      continue;
-    }
-    $stdout = trim((string)stream_get_contents($pipes[1]));
-    $stderr = trim((string)stream_get_contents($pipes[2]));
-    fclose($pipes[1]);
-    fclose($pipes[2]);
-    $exit = proc_close($process);
-    if ($exit === 0)
-    {
-      return array('message'=>'NC-Abgleich wurde gestartet.');
-    }
-    $last_error = $stderr !== '' ? $stderr : $stdout;
-  }
-
-  throw new RuntimeException('Der NC-Abgleich konnte nicht gestartet werden'.($last_error !== '' ? ': '.$last_error : '.'));
 }
 
 function bratonien_tools_get_tools()

main.inc.php

@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.6.28
+Version: 0.9.6.30
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
@@ -24,6 +24,7 @@ require_once(BRATONIEN_TOOLS_PATH . 'include/album_shares.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_orphan_ws.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/nc_productive_ws.inc.php');
+require_once(BRATONIEN_TOOLS_PATH . 'include/nc_connector_scheduler.inc.php');
 
 add_event_handler('get_admin_plugin_menu_links', 'bratonien_tools_admin_menu');
 add_event_handler('get_derivative_url', 'bratonien_tools_filter_derivative_url', EVENT_HANDLER_PRIORITY_NEUTRAL, 4);
@@ -35,6 +36,7 @@ add_event_handler('init', 'bratonien_tools_prepare_connector_private_import', EV
 add_event_handler('init', 'bratonien_tools_prepare_private_album_permissions', EVENT_HANDLER_PRIORITY_NEUTRAL - 20);
 add_event_handler('init', 'bratonien_tools_preserve_private_album_access', EVENT_HANDLER_PRIORITY_NEUTRAL - 10);
 add_event_handler('init', 'bratonien_tools_album_shares_init');
+add_event_handler('init', 'bratonien_tools_nc_scheduler_tick', EVENT_HANDLER_PRIORITY_NEUTRAL + 100);
 add_event_handler('delete_categories', 'bratonien_tools_album_shares_on_delete_categories');
 add_event_handler('ws_add_methods', 'bratonien_tools_register_ws_methods');
 add_event_handler('ws_add_methods', 'bratonien_tools_register_nc_orphan_ws_methods');

maintain.class.php

@@ -8,6 +8,7 @@ require_once(dirname(__FILE__) . '/include/album_shares.inc.php');
 require_once(dirname(__FILE__) . '/include/database.class.php');
 require_once(dirname(__FILE__) . '/tools/watermark_profiles.inc.php');
 require_once(dirname(__FILE__) . '/include/dependencies.inc.php');
+require_once(dirname(__FILE__) . '/include/nc_connector_scheduler.inc.php');
 
 class bratonien_tools_maintain extends PluginMaintain
 {
@@ -18,9 +19,14 @@ class bratonien_tools_maintain extends PluginMaintain
 
     $dependency_messages = array();
     bratonien_tools_ensure_dependencies($dependency_messages);
+    if (!bratonien_tools_nc_scheduler_install())
+    {
+      $dependency_messages[] = 'Der native NC-Scheduler konnte sein Piwigo-Laufzeitverzeichnis nicht anlegen.';
+    }
 
     if (function_exists('conf_update_param'))
     {
+      conf_update_param('bratonien_nc_scheduler_interval', 60);
       conf_update_param('bratonien_dependency_status', json_encode(array(
         'checked_at' => time(),
         'messages' => $dependency_messages,

runtime/lib/build_webdav_placeholder_source.py

@@ -3,7 +3,7 @@
 
 This creates only tiny placeholder files plus a metadata mapping; no Nextcloud
 original media is downloaded. The authenticated Nextcloud user is never used as
-an album name. Selecting the user's WebDAV root mirrors its children directly.
+an album name.
 """
 
 from __future__ import annotations
@@ -249,20 +249,32 @@ def main() -> int:
 
         for remote_root_raw in args.root:
             remote_root = validate_relative(remote_root_raw)
-            current, _ = client.list_collection(remote_root)
+            current, root_children = client.list_collection(remote_root)
             fileid = int(current["fileid"])
             if fileid in used_fileids:
                 fail(f"duplicate selected Nextcloud root fileid: {fileid}")
             used_fileids.add(fileid)
-            # An explicitly selected folder keeps its own name. The authenticated
-            # user's WebDAV root is transparent and must never become an album.
-            display = "" if remote_root == "" else (str(current.get("display_name", "")).strip() or PurePosixPath(remote_root).name)
             local_name = f"root-{fileid}"
             local_root = staging / local_name
             files, folders, skipped = build_root(client, remote_root, local_root, seed, mapping)
             total_files += files
             total_folders += folders
             total_skipped += skipped
+
+            if remote_root == "":
+                for child in sorted(root_children, key=lambda item: str(item.get("display_name", "")).casefold()):
+                    name = safe_local_name(str(child.get("display_name", "")))
+                    child_fileid = int(child.get("fileid", 0))
+                    if child_fileid < 1:
+                        fail(f"Nextcloud returned no stable fileid for root child {name!r}")
+                    child_path = source_dir / local_name / name
+                    if bool(child.get("is_dir")):
+                        manifest.append(f"webdav:{child_fileid}\tfolder\t{name}\t{child_path}")
+                    elif Path(name).suffix.lower() in SUPPORTED_IMAGE_EXTENSIONS:
+                        manifest.append(f"webdav:{child_fileid}\tfile\t{name}\t{child_path}")
+                continue
+
+            display = str(current.get("display_name", "")).strip() or PurePosixPath(remote_root).name
             manifest.append(f"webdav:{fileid}\tfolder\t{display}\t{source_dir / local_name}")
 
         if previous.exists():

runtime/lib/shadow_tree.py

@@ -79,23 +79,15 @@ def preferred_target(source_key: str, raw_name: str, parent_target: Path, old_ma
     return safe_name(raw_name)
 
 
-def mirror_directory(
+def mirror_directory(source: Path, target: Path, source_key: str, target_key: Path, old_map: dict[str, str], new_map: dict[str, str]) -> None:
-    source: Path,
-    target: Path,
-    source_key: str,
-    target_key: Path,
-    old_map: dict[str, str],
-    new_map: dict[str, str],
-    used: set[str] | None = None,
-) -> None:
     target.mkdir(parents=True, exist_ok=True)
-    used_names = used if used is not None else set()
+    used: set[str] = set()
     for child in sorted(source.iterdir(), key=lambda item: (item.name.casefold(), item.name)):
         if child.is_symlink():
             continue
         child_source_key = f"{source_key}/{child.name}"
         preferred = preferred_target(child_source_key, child.name, target_key, old_map)
-        child_name = unique_name(preferred, used_names, child.is_file())
+        child_name = unique_name(preferred, used, child.is_file())
         child_target = target / child_name
         child_target_key = target_key / child_name
         new_map[child_source_key] = child_target_key.as_posix()
@@ -128,26 +120,11 @@ def build(manifest: Path, destination: Path, state_file: Path) -> None:
 
     try:
         used_roots: set[str] = set()
-        transparent_roots = 0
         for entry in sorted(entries, key=lambda item: (item["display_name"].casefold(), item["share_id"])):
             source = Path(entry["source_path"])
             source_key = f"share:{entry['share_id']}"
-            is_file_share = entry["item_type"] == "file"
-
-            # Empty display_name is intentional: it represents the authenticated
-            # user's WebDAV root. Its children belong directly at destination;
-            # the Nextcloud username must never become an album wrapper.
-            if not is_file_share and entry["display_name"] == "":
-                transparent_roots += 1
-                if transparent_roots > 1:
-                    raise ValueError("only one transparent WebDAV root is allowed")
-                if not source.is_dir():
-                    raise FileNotFoundError(f"source is not a readable directory: {source}")
-                new_map[source_key] = "."
-                mirror_directory(source, staging, source_key, Path("."), old_map, new_map, used_roots)
-                continue
-
             preferred = preferred_target(source_key, entry["display_name"], Path("."), old_map)
+            is_file_share = entry["item_type"] == "file"
             root_name = unique_name(preferred, used_roots, is_file_share)
             root_key = Path(root_name)
             new_map[source_key] = root_key.as_posix()

runtime/native-runner.php

@@ -0,0 +1,100 @@
+#!/usr/bin/env php
+<?php
+if (PHP_SAPI !== 'cli')
+{
+  fwrite(STDERR, "CLI only\n");
+  exit(1);
+}
+
+$pluginRoot = dirname(__DIR__);
+$piwigoRoot = dirname($pluginRoot, 2);
+$base = rtrim($piwigoRoot, '/').'/_data/bratonien-tools';
+$schedulerDir = $base.'/nc-connector-scheduler';
+$stateFile = $schedulerDir.'/state.json';
+$runtimeDir = $base.'/nc-connector-runtime';
+$stateRoot = $base.'/nc-connector-state';
+
+function native_scheduler_state($path)
+{
+  if (!is_readable($path)) return array();
+  $decoded = json_decode((string)@file_get_contents($path), true);
+  return is_array($decoded) ? $decoded : array();
+}
+
+function native_scheduler_write($path, array $state)
+{
+  $json = json_encode($state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+  if (!is_string($json)) return false;
+  $tmp = $path.'.tmp';
+  if (@file_put_contents($tmp, $json."\n", LOCK_EX) === false) return false;
+  @chmod($tmp, 0640);
+  return @rename($tmp, $path);
+}
+
+foreach (array($schedulerDir, $runtimeDir, $stateRoot) as $dir)
+{
+  if (!is_dir($dir) && !@mkdir($dir, 0750, true) && !is_dir($dir))
+  {
+    fwrite(STDERR, "Runtime-Verzeichnis konnte nicht angelegt werden: {$dir}\n");
+    exit(1);
+  }
+}
+
+$state = native_scheduler_state($stateFile);
+$state['enabled'] = true;
+$state['mode'] = 'piwigo-native';
+$state['state'] = 'running';
+$state['message'] = 'NC-Abgleich läuft.';
+$state['started_at'] = time();
+$state['timestamp'] = time();
+native_scheduler_write($stateFile, $state);
+
+$env = $_ENV;
+$env['PATH'] = '/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin';
+$env['BRATONIEN_NC_NATIVE'] = '1';
+$env['BRATONIEN_NC_PIWIGO_ROOT'] = $piwigoRoot;
+$env['BRATONIEN_NC_CONFIG_DIR'] = $runtimeDir;
+$env['BRATONIEN_NC_STATE_ROOT'] = $stateRoot;
+$env['LC_ALL'] = 'C';
+$env['LANG'] = 'C';
+
+$bash = is_executable('/usr/bin/bash') ? '/usr/bin/bash' : '/bin/bash';
+$command = array($bash, $pluginRoot.'/runtime/run-all.sh');
+$spec = array(
+  0=>array('file','/dev/null','r'),
+  1=>array('pipe','w'),
+  2=>array('pipe','w'),
+);
+$process = @proc_open($command, $spec, $pipes, null, $env);
+$stdout = '';
+$stderr = '';
+$exit = 1;
+if (is_resource($process))
+{
+  $stdout = (string)stream_get_contents($pipes[1]);
+  $stderr = (string)stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+}
+else
+{
+  $stderr = 'run-all.sh konnte nicht gestartet werden.';
+}
+
+$state = native_scheduler_state($stateFile);
+$state['enabled'] = true;
+$state['mode'] = 'piwigo-native';
+$state['state'] = $exit === 0 ? 'success' : 'error';
+$state['message'] = $exit === 0 ? 'NC-Abgleich erfolgreich abgeschlossen.' : 'NC-Abgleich fehlgeschlagen.';
+$state['timestamp'] = time();
+$state['finished_at'] = time();
+$state['exit_code'] = $exit;
+$state['stdout'] = trim($stdout);
+$state['stderr'] = trim($stderr);
+if (empty($state['next_due']) || (int)$state['next_due'] < time())
+{
+  $state['next_due'] = time() + 60;
+}
+native_scheduler_write($stateFile, $state);
+exit($exit === 0 ? 0 : 1);

runtime/reconcile-webdav.php

@@ -78,8 +78,11 @@ function webdav_source_fingerprint($baseUrl, $user, array $roots)
 $pluginRoot = dirname(__DIR__);
 $piwigoRoot = dirname($pluginRoot, 2);
 $dbConfig = $piwigoRoot.'/local/config/database.inc.php';
-$configDir = '/etc/bratonien-tools/nc-connector';
+$nativeMode = getenv('BRATONIEN_NC_NATIVE') === '1';
-$stateRoot = '/var/lib/bratonien-tools/nc-connector';
+$configDir = trim((string)getenv('BRATONIEN_NC_CONFIG_DIR'));
+if ($configDir === '') $configDir = $nativeMode ? rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-runtime' : '/etc/bratonien-tools/nc-connector';
+$stateRoot = trim((string)getenv('BRATONIEN_NC_STATE_ROOT'));
+if ($stateRoot === '') $stateRoot = $nativeMode ? rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-connector-state' : '/var/lib/bratonien-tools/nc-connector';
 $publicSourceRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-source';
 $publicGalleryRoot = rtrim($piwigoRoot, '/').'/_data/bratonien-tools/nc-webdav-gallery';
 $legacyGalleryRoot = rtrim($piwigoRoot, '/').'/galleries';
@@ -107,11 +110,12 @@ try
   $rows = $db->query("SELECT id,name,adapter,config_json,secret_blob FROM `{$table}` ORDER BY id DESC");
   if (!$rows) fail_webdav_reconcile('Connector-Verbindungen konnten nicht gelesen werden: '.$db->error);
 
-  foreach (array($configDir, $publicSourceRoot, $publicGalleryRoot) as $dir)
+  foreach (array($configDir, $stateRoot, $publicSourceRoot, $publicGalleryRoot) as $dir)
   {
-    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0755, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
+    if (!is_dir($dir) && !mkdir($dir, $dir === $configDir ? 0700 : 0750, true)) fail_webdav_reconcile('Runtime-Verzeichnis konnte nicht angelegt werden: '.$dir);
   }
   @chmod($configDir, 0700);
+  @chmod($stateRoot, 0750);
   @chmod($publicSourceRoot, 0755);
   @chmod($publicGalleryRoot, 0755);
 
@@ -150,7 +154,7 @@ try
       $seenFingerprints[$fingerprint] = $id;
       $known[$id] = true;
 
-      $stateDir = rtrim((string)($config['state_dir'] ?? ''), '/');
+      $stateDir = $nativeMode ? $stateRoot.'/connection-'.$id : rtrim((string)($config['state_dir'] ?? ''), '/');
       if ($stateDir === '') $stateDir = $stateRoot.'/connection-'.$id;
       if (!is_dir($stateDir) && !mkdir($stateDir, 0750, true)) fail_webdav_reconcile('State-Verzeichnis konnte nicht angelegt werden.');
       @chmod($stateDir, 0750);
@@ -219,7 +223,7 @@ try
       $config['parallel_gallery_root'] = $galleryRoot;
       $config['source_fingerprint'] = $fingerprint;
       $config['runtime'] = array(
-        'mode'=>'webdav',
+        'mode'=>$nativeMode ? 'piwigo-native-webdav' : 'webdav',
         'config'=>$configPath,
         'piwigo_sync_enabled'=>true,
         'reconciled_at'=>date('Y-m-d H:i:s'),

runtime/run-all.sh

@@ -1,8 +1,18 @@
 #!/usr/bin/env bash
 set -Eeuo pipefail
 
-CONFIG_DIR="/etc/bratonien-tools/nc-connector"
 SCRIPT_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
+PIWIGO_ROOT_DEFAULT="${BRATONIEN_NC_PIWIGO_ROOT:-$(cd -- "$SCRIPT_DIR/../../.." && pwd)}"
+CONFIG_DIR="${BRATONIEN_NC_CONFIG_DIR:-/etc/bratonien-tools/nc-connector}"
+NATIVE_MODE="${BRATONIEN_NC_NATIVE:-0}"
+GLOBAL_LOCK_DIR="${PIWIGO_ROOT_DEFAULT%/}/_data/bratonien-tools/nc-connector-scheduler"
+GLOBAL_LOCK_FILE="$GLOBAL_LOCK_DIR/worker.lock"
+mkdir -p -- "$GLOBAL_LOCK_DIR"
+exec 8>"$GLOBAL_LOCK_FILE"
+if ! flock -n 8; then
+    echo "NC Connector: ein Lauf ist bereits aktiv."
+    exit 0
+fi
 shopt -s nullglob
 
 read_config_value() {
@@ -39,10 +49,14 @@ write_route_status() {
     ' "$ROUTE_STATUS_FILE" "$route" "$label" "$detail" "$success"
 }
 
-php "$SCRIPT_DIR/reconcile.php"
+if [[ "$NATIVE_MODE" != "1" ]]; then
+    php "$SCRIPT_DIR/reconcile.php"
+fi
 php "$SCRIPT_DIR/reconcile-webdav.php"
 php "$SCRIPT_DIR/cleanup-webdav-piwigo.php"
-php "$SCRIPT_DIR/cleanup-stale.php"
+if [[ "$NATIVE_MODE" != "1" ]]; then
+    php "$SCRIPT_DIR/cleanup-stale.php"
+fi
 
 configs=("$CONFIG_DIR"/connection-*.conf)
 webdav_configs=("$CONFIG_DIR"/webdav-connection-*.conf)
@@ -58,7 +72,7 @@ for candidate in "${webdav_configs[@]}" "${configs[@]}"; do
     route_piwigo_root="$(read_config_value PIWIGO_ROOT "$candidate")"
     [[ -n "$route_piwigo_root" ]] && break
 done
-[[ -n "$route_piwigo_root" ]] || route_piwigo_root="/var/www/piwigo"
+[[ -n "$route_piwigo_root" ]] || route_piwigo_root="$PIWIGO_ROOT_DEFAULT"
 ROUTE_STATUS_FILE="${route_piwigo_root%/}/_data/bratonien-tools/nc-connector-status/route-status.json"
 
 failure_count=0
@@ -91,43 +105,45 @@ for config in "${webdav_configs[@]}"; do
     fi
 done
 
-for config in "${configs[@]}"; do
+if [[ "$NATIVE_MODE" != "1" ]]; then
-    [[ -f "$config" ]] || continue
+    for config in "${configs[@]}"; do
-    name="$(basename "$config")"
+        [[ -f "$config" ]] || continue
-    connection_id="0"
+        name="$(basename "$config")"
-    if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
+        connection_id="0"
-        connection_id="${BASH_REMATCH[1]}"
+        if [[ "$name" =~ ^connection-([0-9]+)\.conf$ ]]; then
-    fi
+            connection_id="${BASH_REMATCH[1]}"
-    if [[ "$connection_id" -lt 1 ]]; then
+        fi
-        echo "NC Connector: $name besitzt keine gueltige Verbindungs-ID." >&2
+        if [[ "$connection_id" -lt 1 ]]; then
-        failure_count=$((failure_count + 1))
+            echo "NC Connector: $name besitzt keine gueltige Verbindungs-ID." >&2
-        summary_parts+=("$name: ungueltige Verbindungs-ID")
+            failure_count=$((failure_count + 1))
-        continue
+            summary_parts+=("$name: ungueltige Verbindungs-ID")
-    fi
+            continue
+        fi
 
-    piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
+        piwigo_root="$(read_config_value PIWIGO_ROOT "$config")"
-    [[ -n "$piwigo_root" ]] || piwigo_root="/var/www/piwigo"
+        [[ -n "$piwigo_root" ]] || piwigo_root="$PIWIGO_ROOT_DEFAULT"
-    tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
+        tombstone_dir="${piwigo_root%/}/_data/bratonien-tools/nc-connector-status"
-    if [[ -f "$tombstone_dir/deleted-$connection_id" ]]; then
+        if [[ -f "$tombstone_dir/deleted-$connection_id" ]]; then
-        echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
+            echo "NC Connector: Verbindung $connection_id wurde geloescht; Laufzeitdateien werden entfernt."
-        rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
+            rm -f -- "$CONFIG_DIR/connection-$connection_id.conf" \
-            "$CONFIG_DIR/connection-$connection_id.db-password" \
+                "$CONFIG_DIR/connection-$connection_id.db-password" \
-            "$CONFIG_DIR/connection-$connection_id.piwigo-password" \
+                "$CONFIG_DIR/connection-$connection_id.piwigo-password" \
-            "$CONFIG_DIR/connection-$connection_id.storages.tsv" \
+                "$CONFIG_DIR/connection-$connection_id.storages.tsv" \
-            "$CONFIG_DIR/connection-$connection_id.roots.tsv"
+                "$CONFIG_DIR/connection-$connection_id.roots.tsv"
-        rm -f -- "$tombstone_dir/deleted-$connection_id"
+            rm -f -- "$tombstone_dir/deleted-$connection_id"
-        continue
+            continue
-    fi
+        fi
 
-    local_count=$((local_count + 1))
+        local_count=$((local_count + 1))
-    echo "NC Connector Local #$connection_id: $name"
+        echo "NC Connector Local #$connection_id: $name"
-    if env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
+        if env PIWIGO_CONFIG="$config" bash "$SCRIPT_DIR/sync.sh"; then
-        summary_parts+=("Local #$connection_id erfolgreich")
+            summary_parts+=("Local #$connection_id erfolgreich")
-    else
+        else
-        failure_count=$((failure_count + 1))
+            failure_count=$((failure_count + 1))
-        summary_parts+=("Local #$connection_id fehlgeschlagen")
+            summary_parts+=("Local #$connection_id fehlgeschlagen")
-    fi
+        fi
-done
+    done
+fi
 
 summary_detail="$(IFS='; '; printf '%s' "${summary_parts[*]}")"
 [[ -n "$summary_detail" ]] || summary_detail="Keine Verbindung wurde ausgefuehrt."

runtime/sync-webdav.sh

@@ -134,21 +134,33 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
         exit "$PIWIGO_EXIT"
     fi
 
-    MEDIA_UNIT="bratonien-nc-media-${CONNECTION_ID}-$(date +%s)"
+    if [[ "${BRATONIEN_NC_NATIVE:-0}" == "1" ]]; then
-    if ! systemd-run \
+        if command -v timeout >/dev/null 2>&1; then
-        --quiet \
+            if ! timeout 30m env PIWIGO_CONFIG="$CONFIG_FILE" bash "$SCRIPT_DIR/build-webdav-media.sh"; then
-        --collect \
+                write_status error "Bildaufbereitung ist fehlgeschlagen oder hat das 30-Minuten-Limit erreicht"
-        --unit="$MEDIA_UNIT" \
+                exit 1
-        --property=RuntimeMaxSec=30min \
+            fi
-        --setenv="PIWIGO_CONFIG=$CONFIG_FILE" \
+        elif ! env PIWIGO_CONFIG="$CONFIG_FILE" bash "$SCRIPT_DIR/build-webdav-media.sh"; then
-        /usr/bin/env bash "$SCRIPT_DIR/build-webdav-media.sh"; then
+            write_status error "Bildaufbereitung ist fehlgeschlagen"
-        write_status error "Bildaufbereitung konnte nicht im Hintergrund gestartet werden"
+            exit 1
-        exit 1
+        fi
+    else
+        MEDIA_UNIT="bratonien-nc-media-${CONNECTION_ID}-$(date +%s)"
+        if ! systemd-run \
+            --quiet \
+            --collect \
+            --unit="$MEDIA_UNIT" \
+            --property=RuntimeMaxSec=30min \
+            --setenv="PIWIGO_CONFIG=$CONFIG_FILE" \
+            /usr/bin/env bash "$SCRIPT_DIR/build-webdav-media.sh"; then
+            write_status error "Bildaufbereitung konnte nicht im Hintergrund gestartet werden"
+            exit 1
+        fi
     fi
 
     if grep -q 'Piwigo-Synchronisierung per API erfolgreich' <<<"$PIWIGO_OUTPUT"; then
         write_status ok \
-            "WebDAV eingelesen und Piwigo synchronisiert; Bildaufbereitung läuft im Hintergrund" \
+            "WebDAV eingelesen und Piwigo synchronisiert; Bildaufbereitung abgeschlossen" \
             "" \
             "api" \
             "ok" \
@@ -157,7 +169,7 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
             "Fallback wurde nicht benötigt"
     elif grep -q 'Piwigo-Datenbanksynchronisierung per Benutzername/Passwort-Fallback erfolgreich' <<<"$PIWIGO_OUTPUT"; then
         write_status ok \
-            "WebDAV eingelesen und Piwigo über Fallback synchronisiert; Bildaufbereitung läuft im Hintergrund" \
+            "WebDAV eingelesen und Piwigo über Fallback synchronisiert; Bildaufbereitung abgeschlossen" \
             "" \
             "fallback" \
             "not_used" \
@@ -165,7 +177,7 @@ if [[ "${PIWIGO_SYNC_ENABLED:-0}" == "1" ]]; then
             "ok" \
             "Benutzername/Passwort-Fallback erfolgreich"
     else
-        write_status ok "WebDAV eingelesen und Piwigo synchronisiert; Bildaufbereitung läuft im Hintergrund"
+        write_status ok "WebDAV eingelesen und Piwigo synchronisiert; Bildaufbereitung abgeschlossen"
     fi
 else
     write_status ok "WebDAV eingelesen; Piwigo-Synchronisierung ist für diese Verbindung deaktiviert"