Bump version to 0.9.6.8.5

main.inc.php

@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.6.5
+Version: 0.9.6.8.5
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien

webdav-derivative-debug.php

@@ -0,0 +1,183 @@
+<?php
+define('PHPWG_ROOT_PATH', '../../');
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+if (!defined('BRATONIEN_TOOLS_PATH'))
+{
+  define('BRATONIEN_TOOLS_ID', basename(__DIR__));
+  define('BRATONIEN_TOOLS_PATH', PHPWG_ROOT_PATH.'plugins/'.BRATONIEN_TOOLS_ID.'/');
+}
+require_once(BRATONIEN_TOOLS_PATH.'include/webdav_image_runtime.inc.php');
+
+function bratonien_tools_webdav_debug_out($status, array $data)
+{
+  http_response_code((int)$status);
+  header('Content-Type: application/json; charset=utf-8');
+  header('Cache-Control: no-store');
+  echo json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+  exit;
+}
+
+global $user;
+if (!isset($user['status']) || !in_array($user['status'], array('admin', 'webmaster'), true))
+{
+  bratonien_tools_webdav_debug_out(403, array('ok'=>false, 'stage'=>'auth', 'error'=>'Nur fuer Administratoren/Webmaster.'));
+}
+
+$image_id = (int)($_GET['id'] ?? 0);
+if ($image_id < 1)
+{
+  bratonien_tools_webdav_debug_out(400, array('ok'=>false, 'stage'=>'input', 'error'=>'Bild-ID fehlt.'));
+}
+
+$debug = array(
+  'ok'=>false,
+  'image_id'=>$image_id,
+  'stage'=>'start',
+);
+
+$result = pwg_query('SELECT id, path, coi FROM '.IMAGES_TABLE.' WHERE id='.$image_id.' LIMIT 1');
+if (!pwg_db_num_rows($result))
+{
+  $debug['stage'] = 'image-row';
+  $debug['error'] = 'Bild nicht gefunden.';
+  bratonien_tools_webdav_debug_out(404, $debug);
+}
+$row = pwg_db_fetch_assoc($result);
+$image_path = (string)($row['path'] ?? '');
+$debug['images_path'] = $image_path;
+
+$absolute = $image_path;
+if (strpos($absolute, '/') !== 0)
+{
+  $absolute = PHPWG_ROOT_PATH.ltrim(preg_replace('#^\./#', '', $absolute), '/');
+}
+$debug['absolute_path'] = $absolute;
+$debug['absolute_exists'] = file_exists($absolute);
+$debug['absolute_is_file'] = is_file($absolute);
+$debug['absolute_is_link'] = is_link($absolute);
+if (is_link($absolute))
+{
+  $debug['link_target'] = readlink($absolute);
+}
+
+$resolved = realpath($absolute);
+$debug['realpath'] = $resolved === false ? null : $resolved;
+if ($resolved === false)
+{
+  $debug['stage'] = 'realpath';
+  $debug['error'] = 'realpath() konnte images.path nicht aufloesen.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+
+$normalized = str_replace('\\', '/', $resolved);
+$debug['normalized_realpath'] = $normalized;
+
+$match = array();
+if (!preg_match('#/nc-webdav-source/connection-([0-9]+)/root-([0-9]+)/(.*)$#', $normalized, $match))
+{
+  $debug['stage'] = 'source-regex';
+  $debug['error'] = 'realpath passt nicht zum erwarteten nc-webdav-source-Schema.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+
+$connection_id = (int)$match[1];
+$root_fileid = (int)$match[2];
+$relative_path = trim((string)$match[3], '/');
+$debug['connection_id'] = $connection_id;
+$debug['root_fileid'] = $root_fileid;
+$debug['relative_path'] = $relative_path;
+
+$table = defined('BRATONIEN_TOOLS_NC_CONNECTIONS_TABLE')
+  ? BRATONIEN_TOOLS_NC_CONNECTIONS_TABLE
+  : $GLOBALS['prefixeTable'].'bratonien_tools_nc_connections';
+$debug['connections_table'] = $table;
+
+$connection_result = pwg_query('SELECT id, enabled, adapter, config_json FROM `'.$table.'` WHERE id='.$connection_id.' LIMIT 1');
+if (!pwg_db_num_rows($connection_result))
+{
+  $debug['stage'] = 'connection-row';
+  $debug['error'] = 'Erkannte WebDAV-Verbindung existiert nicht in der Connector-Tabelle.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+$connection_row = pwg_db_fetch_assoc($connection_result);
+$debug['connection_enabled'] = (int)($connection_row['enabled'] ?? 0);
+$debug['connection_adapter'] = (string)($connection_row['adapter'] ?? '');
+
+$config = json_decode((string)($connection_row['config_json'] ?? ''), true);
+if (!is_array($config))
+{
+  $debug['stage'] = 'config-json';
+  $debug['error'] = 'config_json ist kein gueltiges JSON-Objekt.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+
+$debug['source_mode'] = (string)($config['source_mode'] ?? '');
+$debug['state_dir'] = (string)($config['state_dir'] ?? '');
+$debug['parallel_gallery_root'] = (string)($config['parallel_gallery_root'] ?? '');
+
+$roots = isset($config['roots']) && is_array($config['roots']) ? $config['roots'] : array();
+$debug['roots'] = array();
+$root_path = '';
+foreach ($roots as $root)
+{
+  $entry = array(
+    'fileid'=>(int)($root['fileid'] ?? 0),
+    'webdav_path'=>(string)($root['webdav_path'] ?? ''),
+    'display_name'=>(string)($root['display_name'] ?? ''),
+  );
+  $debug['roots'][] = $entry;
+  if ($entry['fileid'] === $root_fileid)
+  {
+    $root_path = trim($entry['webdav_path'], '/');
+  }
+}
+$debug['matched_root_path'] = $root_path;
+if ($debug['source_mode'] !== 'webdav-placeholder')
+{
+  $debug['stage'] = 'source-mode';
+  $debug['error'] = 'source_mode ist nicht webdav-placeholder.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+if ($root_path === '')
+{
+  $debug['stage'] = 'root-match';
+  $debug['error'] = 'root_fileid aus dem Dateipfad kommt in config.roots nicht vor.';
+  bratonien_tools_webdav_debug_out(200, $debug);
+}
+
+$mapping_file = rtrim((string)($config['state_dir'] ?? ''), '/').'/webdav-map.json';
+$debug['mapping_file'] = $mapping_file;
+$debug['mapping_readable'] = is_readable($mapping_file);
+$debug['mapping_has_resolved_key'] = false;
+$debug['mapping_has_normalized_key'] = false;
+$debug['mapping_entry'] = null;
+
+if (is_readable($mapping_file))
+{
+  $mapping = json_decode((string)file_get_contents($mapping_file), true);
+  if (is_array($mapping) && isset($mapping['files']) && is_array($mapping['files']))
+  {
+    $debug['mapping_has_resolved_key'] = array_key_exists($resolved, $mapping['files']);
+    $debug['mapping_has_normalized_key'] = array_key_exists($normalized, $mapping['files']);
+    $entry = $mapping['files'][$resolved] ?? $mapping['files'][$normalized] ?? null;
+    if (is_array($entry))
+    {
+      $debug['mapping_entry'] = $entry;
+    }
+  }
+  else
+  {
+    $debug['mapping_error'] = 'Mapping-Datei ist ungueltig oder enthaelt kein files-Objekt.';
+  }
+}
+
+$debug['runtime_source_info'] = bratonien_tools_webdav_image_source_info($image_id);
+$debug['stage'] = $debug['runtime_source_info'] ? 'ok' : 'runtime-source-info-null';
+$debug['ok'] = (bool)$debug['runtime_source_info'];
+if (!$debug['ok'])
+{
+  $debug['error'] = 'Die produktive Zuordnungsfunktion liefert trotz der obigen Zwischenergebnisse null.';
+}
+
+bratonien_tools_webdav_debug_out(200, $debug);

webdav-derivative-test.php

@@ -1,13 +1,6 @@
 <?php
 define('PHPWG_ROOT_PATH', '../../');
 include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
-
-if (!defined('BRATONIEN_TOOLS_PATH'))
-{
-  define('BRATONIEN_TOOLS_ID', basename(__DIR__));
-  define('BRATONIEN_TOOLS_PATH', PHPWG_ROOT_PATH.'plugins/'.BRATONIEN_TOOLS_ID.'/');
-}
-require_once(BRATONIEN_TOOLS_PATH.'include/webdav_image_runtime.inc.php');
 require_once(PHPWG_ROOT_PATH.'include/derivative.inc.php');
 
 function bratonien_tools_webdav_derivative_test_abort($status, $message)
@@ -46,6 +39,92 @@ function bratonien_tools_webdav_derivative_test_quote_path($path)
   return implode('/', array_map('rawurlencode', $parts));
 }
 
+function bratonien_tools_webdav_derivative_test_source_info($image_id, array $image_row)
+{
+  $image_id = (int)$image_id;
+  $path = (string)($image_row['path'] ?? '');
+  if ($image_id < 1 || $path === '') return null;
+
+  $absolute = $path;
+  if (strpos($absolute, '/') !== 0)
+  {
+    $absolute = PHPWG_ROOT_PATH.ltrim(preg_replace('#^\\./#', '', $absolute), '/');
+  }
+
+  $resolved = realpath($absolute);
+  if ($resolved === false) return null;
+
+  $normalized = str_replace('\\', '/', $resolved);
+  if (!preg_match('#/nc-webdav-source/connection-([0-9]+)/root-([0-9]+)/(.*)$#', $normalized, $match))
+  {
+    return null;
+  }
+
+  $connection_id = (int)$match[1];
+  $root_fileid = (int)$match[2];
+  $relative_path = trim((string)$match[3], '/');
+  if ($connection_id < 1 || $root_fileid < 1 || $relative_path === '') return null;
+
+  $table = $GLOBALS['prefixeTable'].'bratonien_tools_nc_connections';
+  $connection_result = pwg_query('SELECT config_json FROM `'.$table.'` WHERE id='.$connection_id.' LIMIT 1');
+  if (!pwg_db_num_rows($connection_result)) return null;
+
+  $connection_row = pwg_db_fetch_assoc($connection_result);
+  $config = json_decode((string)$connection_row['config_json'], true);
+  if (!is_array($config) || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder') return null;
+
+  $root_found = false;
+  $root_path = '';
+  $roots = isset($config['roots']) && is_array($config['roots']) ? $config['roots'] : array();
+  foreach ($roots as $root)
+  {
+    if ((int)($root['fileid'] ?? 0) === $root_fileid)
+    {
+      $root_found = true;
+      $root_path = trim((string)($root['webdav_path'] ?? ''), '/');
+      break;
+    }
+  }
+  if (!$root_found) return null;
+
+  $webdav_path = trim($root_path === '' ? $relative_path : $root_path.'/'.$relative_path, '/');
+  if ($webdav_path === '') return null;
+
+  $content_type = '';
+  $size = 0;
+  $etag = '';
+  $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
+  if ($state_dir !== '')
+  {
+    $mapping_file = $state_dir.'/webdav-map.json';
+    if (is_readable($mapping_file))
+    {
+      $mapping = json_decode((string)file_get_contents($mapping_file), true);
+      if (is_array($mapping) && isset($mapping['files']) && is_array($mapping['files']))
+      {
+        $entry = $mapping['files'][$resolved] ?? $mapping['files'][$normalized] ?? null;
+        if (is_array($entry) && (string)($entry['kind'] ?? '') === 'file')
+        {
+          $webdav_path = trim((string)($entry['webdav_path'] ?? $webdav_path), '/');
+          $content_type = (string)($entry['content_type'] ?? '');
+          $size = (int)($entry['size'] ?? 0);
+          $etag = (string)($entry['etag'] ?? '');
+        }
+      }
+    }
+  }
+
+  return array(
+    'image_id'=>$image_id,
+    'connection_id'=>$connection_id,
+    'webdav_path'=>$webdav_path,
+    'content_type'=>$content_type,
+    'size'=>$size,
+    'etag'=>$etag,
+    'coi'=>$image_row['coi'] ?? null,
+  );
+}
+
 function bratonien_tools_webdav_derivative_test_download(array $source, $destination, &$detail=null)
 {
   $detail = '';
@@ -71,6 +150,7 @@ function bratonien_tools_webdav_derivative_test_download(array $source, $destina
     $detail = 'Connector-Schluessel fehlt.';
     return false;
   }
+
   $key_row = pwg_db_fetch_assoc($key_result);
   $credentials = bratonien_tools_webdav_derivative_test_decrypt_secret((string)$row['secret_blob'], (string)$key_row['value']);
   if (!is_array($credentials))
@@ -107,7 +187,7 @@ function bratonien_tools_webdav_derivative_test_download(array $source, $destina
     CURLOPT_RETURNTRANSFER => false,
     CURLOPT_FAILONERROR => false,
     CURLOPT_FILE => $fp,
-    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Derivative-Test/0.9.6.3',
+    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Derivative-Parallel-Test',
   ));
 
   $ok = curl_exec($ch);
@@ -160,7 +240,7 @@ function bratonien_tools_webdav_derivative_test_call_i($url, &$response_body, &$
     CURLOPT_TIMEOUT => 180,
     CURLOPT_RETURNTRANSFER => true,
     CURLOPT_FAILONERROR => false,
-    CURLOPT_USERAGENT => 'Bratonien-Tools-Derivative-Gate/0.9.6.3',
+    CURLOPT_USERAGENT => 'Bratonien-Tools-Derivative-Parallel-Gate',
   ));
 
   $body = curl_exec($ch);
@@ -194,6 +274,14 @@ if (!isset($user['status']) || !in_array($user['status'], array('admin', 'webmas
   bratonien_tools_webdav_derivative_test_abort(403, 'Dieser Test-Endpunkt ist nur fuer Administratoren verfuegbar.');
 }
 
+$metrics_requested = isset($_GET['metrics']) && (string)$_GET['metrics'] === '1';
+$metrics_started_at = microtime(true);
+$memory_start = memory_get_usage(true);
+if (function_exists('memory_reset_peak_usage'))
+{
+  memory_reset_peak_usage();
+}
+
 $image_id = (int)($_GET['id'] ?? 0);
 if ($image_id < 1)
 {
@@ -213,77 +301,67 @@ if (!pwg_db_num_rows($result))
   bratonien_tools_webdav_derivative_test_abort(404, 'Bild nicht gefunden.');
 }
 $image_row = pwg_db_fetch_assoc($result);
-$src_image = new SrcImage($image_row);
-$source = bratonien_tools_webdav_image_source_info($image_id);
+
+$source = bratonien_tools_webdav_derivative_test_source_info($image_id, $image_row);
 if (!$source)
 {
   bratonien_tools_webdav_derivative_test_abort(404, 'Keine WebDAV-Quelle fuer dieses Bild gefunden.');
 }
 
-$derivative = new DerivativeImage($defined[$type], $src_image);
-if ($derivative->same_as_source())
+$upload_dir = rtrim((string)($GLOBALS['conf']['upload_dir'] ?? './upload'), '/');
+$test_rel_dir = $upload_dir.'/bratonien-webdav-test';
+$test_root = PHPWG_ROOT_PATH.$test_rel_dir;
+if (!is_dir($test_root) && !@mkdir($test_root, 0755, true))
 {
-  bratonien_tools_webdav_derivative_test_abort(409, 'Dieser Typ ist fuer das Bild identisch mit der Quelle und erzeugt kein Derivat.');
+  bratonien_tools_webdav_derivative_test_abort(500, 'Paralleler Testbereich konnte nicht angelegt werden: '.$test_root);
 }
-$derivative_path = $derivative->get_path();
-if (is_file($derivative_path) && is_readable($derivative_path))
+if (!is_writable($test_root))
 {
-  header('X-Bratonien-WebDAV-Test: derivative-already-exists');
-  header('Content-Type: '.(function_exists('mime_content_type') ? (mime_content_type($derivative_path) ?: 'application/octet-stream') : 'application/octet-stream'));
-  header('Content-Length: '.filesize($derivative_path));
-  header('Cache-Control: no-store');
-  readfile($derivative_path);
-  exit;
+  bratonien_tools_webdav_derivative_test_abort(500, 'Paralleler Testbereich ist fuer PHP nicht beschreibbar: '.$test_root);
 }
 
-$image_path = (string)($image_row['path'] ?? '');
-$absolute_image_path = $image_path;
-if (strpos($absolute_image_path, '/') !== 0)
-{
-  $absolute_image_path = PHPWG_ROOT_PATH.ltrim(preg_replace('#^\./#', '', $absolute_image_path), '/');
-}
-$materialize_path = realpath($absolute_image_path);
-if ($materialize_path === false || !is_file($materialize_path))
-{
-  bratonien_tools_webdav_derivative_test_abort(500, 'Placeholder-Quelldatei konnte nicht aufgeloest werden.');
-}
-
-$normalized_materialize = str_replace('\\', '/', $materialize_path);
-if (!preg_match('#/nc-webdav-source/connection-'.(int)$source['connection_id'].'/#', $normalized_materialize))
-{
-  bratonien_tools_webdav_derivative_test_abort(500, 'Aufgeloester Placeholder-Pfad passt nicht zur WebDAV-Verbindung.');
-}
-
-$lock_path = $materialize_path.'.bratonien-materialize.lock';
+$lock_path = $test_root.'/image-'.$image_id.'.lock';
 $lock = @fopen($lock_path, 'c');
 if (!$lock || !flock($lock, LOCK_EX))
 {
   if ($lock) fclose($lock);
-  bratonien_tools_webdav_derivative_test_abort(503, 'Materialisierungs-Lock konnte nicht gesetzt werden.');
+  bratonien_tools_webdav_derivative_test_abort(503, 'Paralleler Test-Lock konnte nicht gesetzt werden.');
 }
 
-$temp_path = $materialize_path.'.bratonien-real.'.getmypid().'.'.bin2hex(random_bytes(4)).'.part';
-$backup_path = $materialize_path.'.bratonien-placeholder.'.getmypid().'.'.bin2hex(random_bytes(4));
-$materialized = false;
-$backup_created = false;
+$extension = strtolower(pathinfo((string)($image_row['path'] ?? ''), PATHINFO_EXTENSION));
+if (!in_array($extension, array('jpg', 'jpeg', 'png', 'gif', 'webp'), true))
+{
+  $extension = 'jpg';
+}
+
+$token = getmypid().'-'.bin2hex(random_bytes(6));
+$source_filename = 'source-'.$image_id.'-'.$token.'.'.$extension;
+$source_path = $test_root.'/'.$source_filename;
+$source_rel = $test_rel_dir.'/'.$source_filename;
+$temp_image_id = 0;
+$derivative_path = '';
 $cleaned = false;
 
-$cleanup = function() use (&$cleaned, &$materialized, &$backup_created, $materialize_path, $backup_path, $temp_path, $lock)
+$cleanup = function() use (&$cleaned, &$temp_image_id, &$derivative_path, $source_path, $lock)
 {
   if ($cleaned) return;
   $cleaned = true;
 
-  if ($materialized && $backup_created && is_file($backup_path))
+  if ($temp_image_id > 0)
   {
-    @rename($backup_path, $materialize_path);
-  }
-  elseif ($backup_created && is_file($backup_path) && !is_file($materialize_path))
-  {
-    @rename($backup_path, $materialize_path);
+    @pwg_query('DELETE FROM '.IMAGES_TABLE.' WHERE id='.(int)$temp_image_id.' LIMIT 1');
+    $temp_image_id = 0;
   }
 
-  if (is_file($temp_path)) @unlink($temp_path);
-  if (is_file($backup_path)) @unlink($backup_path);
+  if ($derivative_path !== '' && is_file($derivative_path))
+  {
+    @unlink($derivative_path);
+  }
+
+  if (is_file($source_path))
+  {
+    @unlink($source_path);
+  }
 
   @flock($lock, LOCK_UN);
   @fclose($lock);
@@ -293,31 +371,57 @@ register_shutdown_function($cleanup);
 try
 {
   $detail = '';
-  if (!bratonien_tools_webdav_derivative_test_download($source, $temp_path, $detail))
+  if (!bratonien_tools_webdav_derivative_test_download($source, $source_path, $detail))
   {
     bratonien_tools_webdav_derivative_test_abort(502, $detail);
   }
 
-  // Preserve the exact placeholder inode via a second hard link. Replacing the
-  // real source entry with rename() is then atomic and does not overwrite the
-  // shared placeholder inode used by the WebDAV source tree.
-  if (!@link($materialize_path, $backup_path))
-  {
-    bratonien_tools_webdav_derivative_test_abort(500, 'Placeholder konnte nicht sicher per Hardlink gesichert werden.');
-  }
-  $backup_created = true;
+  $source_bytes = (int)filesize($source_path);
 
-  if (!@rename($temp_path, $materialize_path))
+  $dimensions = @getimagesize($source_path);
+  if (!is_array($dimensions) || empty($dimensions[0]) || empty($dimensions[1]))
   {
-    bratonien_tools_webdav_derivative_test_abort(500, 'Nextcloud-Bild konnte nicht atomar materialisiert werden.');
+    bratonien_tools_webdav_derivative_test_abort(500, 'Paralleles Original besitzt keine gueltigen Bildabmessungen.');
+  }
+
+  $test_row = $image_row;
+  unset($test_row['id']);
+  $test_row['path'] = $source_rel;
+  $test_row['file'] = $source_filename;
+  if (array_key_exists('width', $test_row)) $test_row['width'] = (int)$dimensions[0];
+  if (array_key_exists('height', $test_row)) $test_row['height'] = (int)$dimensions[1];
+
+  single_insert(IMAGES_TABLE, $test_row);
+  $temp_image_id = (int)pwg_db_insert_id();
+  if ($temp_image_id < 1)
+  {
+    bratonien_tools_webdav_derivative_test_abort(500, 'Temporaerer Piwigo-Testeintrag konnte nicht angelegt werden.');
+  }
+
+  $test_row['id'] = $temp_image_id;
+  $test_src = new SrcImage($test_row);
+  $derivative = new DerivativeImage($defined[$type], $test_src);
+  if ($derivative->same_as_source())
+  {
+    bratonien_tools_webdav_derivative_test_abort(409, 'Dieser Typ ist fuer das parallele Testbild identisch mit der Quelle.');
+  }
+
+  $derivative_path = $derivative->get_path();
+  if ($derivative_path === '')
+  {
+    bratonien_tools_webdav_derivative_test_abort(500, 'Piwigo konnte keinen Derivat-Zielpfad fuer den parallelen Test bestimmen.');
+  }
+
+  if (is_file($derivative_path))
+  {
+    @unlink($derivative_path);
+    clearstatcache(true, $derivative_path);
   }
-  $materialized = true;
-  clearstatcache(true, $materialize_path);
 
   $inner_url = bratonien_tools_webdav_derivative_test_inner_url($derivative_path);
   if ($inner_url === null)
   {
-    bratonien_tools_webdav_derivative_test_abort(500, 'Piwigo-i.php-URL konnte nicht bestimmt werden.');
+    bratonien_tools_webdav_derivative_test_abort(500, 'Piwigo-i.php-URL konnte fuer den parallelen Test nicht bestimmt werden.');
   }
 
   $body = '';
@@ -328,16 +432,56 @@ try
     bratonien_tools_webdav_derivative_test_abort(502, $detail."\n".$body);
   }
 
-  // Restore before anything is sent to the client. The derivative itself stays
-  // in Piwigo; only the transient Nextcloud original disappears again.
-  $cleanup();
   clearstatcache(true, $derivative_path);
   if (!is_file($derivative_path) || !is_readable($derivative_path))
   {
-    bratonien_tools_webdav_derivative_test_abort(500, 'i.php lieferte eine Antwort, aber das Piwigo-Derivat wurde nicht gefunden.');
+    bratonien_tools_webdav_derivative_test_abort(
+      500,
+      "i.php antwortete, aber das parallele Piwigo-Derivat wurde nicht erzeugt.\n"
+      .'Testquelle: '.$source_rel."\n"
+      .'i.php: '.$inner_url
+    );
   }
 
-  header('X-Bratonien-WebDAV-Test: generated-by-piwigo-i.php');
+  $derivative_size = @getimagesize($derivative_path);
+  if (!is_array($derivative_size) || empty($derivative_size[0]) || empty($derivative_size[1]))
+  {
+    bratonien_tools_webdav_derivative_test_abort(500, 'Das von i.php erzeugte parallele Derivat ist keine lesbare Bilddatei.');
+  }
+
+  $generated_width = (int)$derivative_size[0];
+  $generated_height = (int)$derivative_size[1];
+  $derivative_bytes = (int)filesize($derivative_path);
+
+  $cleanup();
+
+  $elapsed_ms = round((microtime(true) - $metrics_started_at) * 1000, 2);
+  $memory_peak = memory_get_peak_usage(true);
+  $memory_delta_peak = max(0, $memory_peak - $memory_start);
+
+  if ($metrics_requested)
+  {
+    header('Content-Type: application/json; charset=utf-8');
+    header('Cache-Control: no-store');
+    echo json_encode(array(
+      'source_bytes'=>$source_bytes,
+      'derivative_bytes'=>$derivative_bytes,
+      'elapsed_ms'=>$elapsed_ms,
+      'memory_start_bytes'=>$memory_start,
+      'memory_peak_bytes'=>$memory_peak,
+      'memory_delta_peak_bytes'=>$memory_delta_peak,
+    ), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
+    exit;
+  }
+
+  header('X-Bratonien-WebDAV-Test: parallel-i.php-success');
+  header('X-Bratonien-Resource-Source-Bytes: '.$source_bytes);
+  header('X-Bratonien-Resource-Derivative-Bytes: '.$derivative_bytes);
+  header('X-Bratonien-Resource-Elapsed-Ms: '.$elapsed_ms);
+  header('X-Bratonien-Resource-Memory-Start-Bytes: '.$memory_start);
+  header('X-Bratonien-Resource-Memory-Peak-Bytes: '.$memory_peak);
+  header('X-Bratonien-Resource-Memory-Delta-Peak-Bytes: '.$memory_delta_peak);
+  header('X-Bratonien-WebDAV-Test-Size: '.$generated_width.'x'.$generated_height);
   header('Content-Type: '.$content_type);
   header('Content-Length: '.strlen($body));
   header('Cache-Control: no-store');

webdav-download-test.php

@@ -0,0 +1,296 @@
+<?php
+define('PHPWG_ROOT_PATH', '../../');
+include_once(PHPWG_ROOT_PATH.'include/common.inc.php');
+
+function bratonien_tools_webdav_download_test_abort($status, $message)
+{
+  http_response_code((int)$status);
+  header('Content-Type: text/plain; charset=utf-8');
+  header('Cache-Control: no-store');
+  echo $message;
+  exit;
+}
+
+function bratonien_tools_webdav_download_test_decrypt_secret($blob, $hex_key)
+{
+  $hex_key = trim((string)$hex_key);
+  if (!preg_match('/^[a-f0-9]{64}$/', $hex_key)) return null;
+
+  $outer = base64_decode(trim((string)$blob), true);
+  $payload = is_string($outer) ? json_decode($outer, true) : null;
+  if (!is_array($payload) || (int)($payload['v'] ?? 0) !== 1) return null;
+
+  $iv = base64_decode((string)($payload['iv'] ?? ''), true);
+  $tag = base64_decode((string)($payload['tag'] ?? ''), true);
+  $cipher = base64_decode((string)($payload['data'] ?? ''), true);
+  if (!is_string($iv) || !is_string($tag) || !is_string($cipher)) return null;
+
+  $plain = openssl_decrypt($cipher, 'aes-256-gcm', hex2bin($hex_key), OPENSSL_RAW_DATA, $iv, $tag);
+  if ($plain === false) return null;
+
+  $decoded = json_decode((string)$plain, true);
+  return is_array($decoded) ? $decoded : null;
+}
+
+function bratonien_tools_webdav_download_test_quote_path($path)
+{
+  $parts = array_values(array_filter(explode('/', trim((string)$path, '/')), 'strlen'));
+  return implode('/', array_map('rawurlencode', $parts));
+}
+
+function bratonien_tools_webdav_download_test_source_info($image_id, array $image_row)
+{
+  $path = (string)($image_row['path'] ?? '');
+  if ($image_id < 1 || $path === '') return null;
+
+  $absolute = $path;
+  if (strpos($absolute, '/') !== 0)
+  {
+    $absolute = PHPWG_ROOT_PATH.ltrim(preg_replace('#^\\./#', '', $absolute), '/');
+  }
+
+  $resolved = realpath($absolute);
+  if ($resolved === false) return null;
+
+  $normalized = str_replace('\\', '/', $resolved);
+  if (!preg_match('#/nc-webdav-source/connection-([0-9]+)/root-([0-9]+)/(.*)$#', $normalized, $match))
+  {
+    return null;
+  }
+
+  $connection_id = (int)$match[1];
+  $root_fileid = (int)$match[2];
+  $relative_path = trim((string)$match[3], '/');
+  if ($connection_id < 1 || $root_fileid < 1 || $relative_path === '') return null;
+
+  $table = $GLOBALS['prefixeTable'].'bratonien_tools_nc_connections';
+  $result = pwg_query('SELECT config_json FROM `'.$table.'` WHERE id='.$connection_id.' LIMIT 1');
+  if (!pwg_db_num_rows($result)) return null;
+
+  $row = pwg_db_fetch_assoc($result);
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config) || (string)($config['source_mode'] ?? '') !== 'webdav-placeholder') return null;
+
+  $root_found = false;
+  $root_path = '';
+  foreach ((array)($config['roots'] ?? array()) as $root)
+  {
+    if ((int)($root['fileid'] ?? 0) === $root_fileid)
+    {
+      $root_found = true;
+      $root_path = trim((string)($root['webdav_path'] ?? ''), '/');
+      break;
+    }
+  }
+  if (!$root_found) return null;
+
+  $webdav_path = trim($root_path === '' ? $relative_path : $root_path.'/'.$relative_path, '/');
+  if ($webdav_path === '') return null;
+
+  $size = 0;
+  $state_dir = rtrim((string)($config['state_dir'] ?? ''), '/');
+  if ($state_dir !== '')
+  {
+    $mapping_file = $state_dir.'/webdav-map.json';
+    if (is_readable($mapping_file))
+    {
+      $mapping = json_decode((string)file_get_contents($mapping_file), true);
+      if (is_array($mapping) && isset($mapping['files']) && is_array($mapping['files']))
+      {
+        $entry = $mapping['files'][$resolved] ?? $mapping['files'][$normalized] ?? null;
+        if (is_array($entry) && (string)($entry['kind'] ?? '') === 'file')
+        {
+          $webdav_path = trim((string)($entry['webdav_path'] ?? $webdav_path), '/');
+          $size = (int)($entry['size'] ?? 0);
+        }
+      }
+    }
+  }
+
+  return array(
+    'connection_id'=>$connection_id,
+    'webdav_path'=>$webdav_path,
+    'size'=>$size,
+  );
+}
+
+function bratonien_tools_webdav_download_test_connection(array $source)
+{
+  $table = $GLOBALS['prefixeTable'].'bratonien_tools_nc_connections';
+  $result = pwg_query('SELECT config_json, secret_blob FROM `'.$table.'` WHERE id='.(int)$source['connection_id'].' LIMIT 1');
+  if (!pwg_db_num_rows($result)) return null;
+
+  $row = pwg_db_fetch_assoc($result);
+  $config = json_decode((string)$row['config_json'], true);
+  if (!is_array($config)) return null;
+
+  $key_result = pwg_query("SELECT value FROM ".$GLOBALS['prefixeTable']."config WHERE param='bratonien_nc_connector_secret' LIMIT 1");
+  if (!pwg_db_num_rows($key_result)) return null;
+  $key_row = pwg_db_fetch_assoc($key_result);
+
+  $credentials = bratonien_tools_webdav_download_test_decrypt_secret((string)$row['secret_blob'], (string)$key_row['value']);
+  if (!is_array($credentials)) return null;
+
+  $base_url = rtrim((string)($config['nextcloud_url'] ?? ''), '/');
+  $user = trim((string)($credentials['nextcloud_user'] ?? ''));
+  $password = (string)($credentials['nextcloud_password'] ?? '');
+  if ($base_url === '' || $user === '' || $password === '') return null;
+
+  return array('base_url'=>$base_url, 'user'=>$user, 'password'=>$password);
+}
+
+global $user;
+if (!isset($user['status']) || !in_array($user['status'], array('admin', 'webmaster'), true))
+{
+  bratonien_tools_webdav_download_test_abort(403, 'Dieser Test-Endpunkt ist nur fuer Administratoren verfuegbar.');
+}
+
+$image_id = (int)($_GET['id'] ?? 0);
+$parallel = (int)($_GET['parallel'] ?? 1);
+if ($image_id < 1)
+{
+  bratonien_tools_webdav_download_test_abort(400, 'Bild-ID fehlt.');
+}
+if ($parallel < 1 || $parallel > 20)
+{
+  bratonien_tools_webdav_download_test_abort(400, 'parallel muss zwischen 1 und 20 liegen.');
+}
+
+$result = pwg_query('SELECT * FROM '.IMAGES_TABLE.' WHERE id='.$image_id.' LIMIT 1');
+if (!pwg_db_num_rows($result))
+{
+  bratonien_tools_webdav_download_test_abort(404, 'Bild nicht gefunden.');
+}
+$image_row = pwg_db_fetch_assoc($result);
+
+$source = bratonien_tools_webdav_download_test_source_info($image_id, $image_row);
+if (!$source)
+{
+  bratonien_tools_webdav_download_test_abort(404, 'Keine WebDAV-Quelle fuer dieses Bild gefunden.');
+}
+
+$connection = bratonien_tools_webdav_download_test_connection($source);
+if (!$connection)
+{
+  bratonien_tools_webdav_download_test_abort(500, 'WebDAV-Verbindung konnte nicht geladen werden.');
+}
+
+$upload_dir = rtrim((string)($GLOBALS['conf']['upload_dir'] ?? './upload'), '/');
+$test_rel_dir = $upload_dir.'/bratonien-webdav-download-test';
+$test_root = PHPWG_ROOT_PATH.$test_rel_dir;
+if (!is_dir($test_root) && !@mkdir($test_root, 0755, true))
+{
+  bratonien_tools_webdav_download_test_abort(500, 'Download-Testbereich konnte nicht angelegt werden: '.$test_root);
+}
+if (!is_writable($test_root))
+{
+  bratonien_tools_webdav_download_test_abort(500, 'Download-Testbereich ist fuer PHP nicht beschreibbar: '.$test_root);
+}
+
+$url = $connection['base_url'].'/remote.php/dav/files/'.rawurlencode($connection['user']).'/'.bratonien_tools_webdav_download_test_quote_path($source['webdav_path']);
+$token = getmypid().'-'.bin2hex(random_bytes(6));
+$multi = curl_multi_init();
+$items = array();
+
+for ($i = 0; $i < $parallel; $i++)
+{
+  $path = $test_root.'/download-'.$image_id.'-'.$token.'-'.$i.'.tmp';
+  $fp = @fopen($path, 'xb');
+  if (!$fp)
+  {
+    foreach ($items as $item)
+    {
+      @fclose($item['fp']);
+      @unlink($item['path']);
+      curl_multi_remove_handle($multi, $item['ch']);
+      curl_close($item['ch']);
+    }
+    curl_multi_close($multi);
+    bratonien_tools_webdav_download_test_abort(500, 'Temporaere Download-Datei konnte nicht angelegt werden.');
+  }
+
+  $ch = curl_init($url);
+  curl_setopt_array($ch, array(
+    CURLOPT_FOLLOWLOCATION => false,
+    CURLOPT_CONNECTTIMEOUT => 10,
+    CURLOPT_TIMEOUT => 180,
+    CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
+    CURLOPT_USERPWD => $connection['user'].':'.$connection['password'],
+    CURLOPT_RETURNTRANSFER => false,
+    CURLOPT_FAILONERROR => false,
+    CURLOPT_FILE => $fp,
+    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Download-Stress-Test',
+  ));
+  curl_multi_add_handle($multi, $ch);
+  $items[] = array('ch'=>$ch, 'fp'=>$fp, 'path'=>$path);
+}
+
+$started_at = microtime(true);
+do
+{
+  $status = curl_multi_exec($multi, $running);
+  if ($status !== CURLM_OK) break;
+  if ($running > 0)
+  {
+    $selected = curl_multi_select($multi, 1.0);
+    if ($selected === -1) usleep(10000);
+  }
+}
+while ($running > 0);
+$elapsed_seconds = microtime(true) - $started_at;
+
+$downloads = array();
+$total_bytes = 0;
+$successful = 0;
+$failed = 0;
+
+foreach ($items as $index => $item)
+{
+  @fflush($item['fp']);
+  @fclose($item['fp']);
+
+  $http = (int)curl_getinfo($item['ch'], CURLINFO_HTTP_CODE);
+  $time_ms = round((float)curl_getinfo($item['ch'], CURLINFO_TOTAL_TIME) * 1000, 2);
+  $errno = curl_errno($item['ch']);
+  $error = curl_error($item['ch']);
+  $bytes = is_file($item['path']) ? (int)filesize($item['path']) : 0;
+  $ok = ($errno === 0 && $http >= 200 && $http < 300 && $bytes > 0);
+
+  if ($ok) $successful++; else $failed++;
+  $total_bytes += $bytes;
+
+  $downloads[] = array(
+    'index'=>$index + 1,
+    'ok'=>$ok,
+    'http'=>$http,
+    'bytes'=>$bytes,
+    'elapsed_ms'=>$time_ms,
+    'mbps'=>$time_ms > 0 ? round(($bytes * 8) / ($time_ms / 1000) / 1000000, 2) : 0,
+    'curl_errno'=>$errno,
+    'curl_error'=>$error,
+  );
+
+  @unlink($item['path']);
+  curl_multi_remove_handle($multi, $item['ch']);
+  curl_close($item['ch']);
+}
+curl_multi_close($multi);
+
+$elapsed_ms = round($elapsed_seconds * 1000, 2);
+$aggregate_mbps = $elapsed_seconds > 0 ? round(($total_bytes * 8) / $elapsed_seconds / 1000000, 2) : 0;
+
+header('Content-Type: application/json; charset=utf-8');
+header('Cache-Control: no-store');
+echo json_encode(array(
+  'image_id'=>$image_id,
+  'parallel'=>$parallel,
+  'same_source_repeated'=>true,
+  'expected_source_bytes'=>(int)$source['size'],
+  'successful'=>$successful,
+  'failed'=>$failed,
+  'total_bytes'=>$total_bytes,
+  'peak_temp_disk_bytes'=>$total_bytes,
+  'elapsed_ms'=>$elapsed_ms,
+  'aggregate_mbps'=>$aggregate_mbps,
+  'downloads'=>$downloads,
+), JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);