0.9.7.16: vorhandene Preview-Caches ohne Massendownload weiterverwenden

0.9.7.15: Piwigo-AJAX-Lader für WebDAV-Bilder reparieren

include/webdav_gallery_runtime.inc.php

@@ -1,98 +0,0 @@
-<?php
-if (!defined('PHPWG_ROOT_PATH'))
-{
-  die('Hacking attempt!');
-}
-
-function bratonien_tools_webdav_derivative_matches_preview($derivative_path, $params, $image_id)
-{
-  $derivative_path = (string)$derivative_path;
-  $image_id = (int)$image_id;
-  if ($derivative_path === '' || $image_id < 1 || !is_file($derivative_path) || !is_readable($derivative_path)) return false;
-
-  $info = bratonien_tools_webdav_image_source_info($image_id);
-  if (!$info) return false;
-
-  $preview = bratonien_tools_webdav_preview_path($info);
-  if (!$preview || !is_file($preview) || !is_readable($preview)) return false;
-
-  $preview_size = @getimagesize($preview);
-  $derivative_size = @getimagesize($derivative_path);
-  if (!is_array($preview_size) || empty($preview_size[0]) || empty($preview_size[1])) return false;
-  if (!is_array($derivative_size) || empty($derivative_size[0]) || empty($derivative_size[1])) return false;
-
-  try
-  {
-    $expected_size = $params->compute_final_size(array((int)$preview_size[0], (int)$preview_size[1]));
-  }
-  catch (Throwable $e)
-  {
-    return false;
-  }
-
-  if (!is_array($expected_size) || !isset($expected_size[0], $expected_size[1])) return false;
-  if ((int)$derivative_size[0] !== (int)$expected_size[0] || (int)$derivative_size[1] !== (int)$expected_size[1]) return false;
-
-  $preview_mtime = @filemtime($preview) ?: 0;
-  $derivative_mtime = @filemtime($derivative_path) ?: 0;
-  if ($preview_mtime > 0 && $derivative_mtime < $preview_mtime) return false;
-
-  return true;
-}
-
-function bratonien_tools_webdav_ondemand_derivative_url($image_id, $params)
-{
-  $image_id = (int)$image_id;
-  if ($image_id < 1 || !is_object($params)) return null;
-
-  $type = trim((string)($params->type ?? ''));
-  if ($type === '') return null;
-
-  return get_root_url().'plugins/'.BRATONIEN_TOOLS_ID.'/webdav-derivative.php?id='.$image_id.'&type='.rawurlencode($type);
-}
-
-function bratonien_tools_filter_webdav_gallery_derivative_url($url, $params, $src_image, $rel_url)
-{
-  if (!is_object($src_image) || empty($src_image->id) || empty($src_image->rel_path)) return $url;
-
-  $source_path = str_replace('\\', '/', (string)$src_image->rel_path);
-  if (!preg_match('#/nc-webdav-source/connection-[0-9]+/root-[0-9]+/.+$#', $source_path))
-  {
-    return $url;
-  }
-
-  $image_id = (int)$src_image->id;
-  try
-  {
-    $derivative = new DerivativeImage($params, $src_image);
-    if (!$derivative->same_as_source())
-    {
-      $derivative_path = $derivative->get_path();
-      if (bratonien_tools_webdav_derivative_matches_preview($derivative_path, $params, $image_id))
-      {
-        return $url;
-      }
-    }
-  }
-  catch (Throwable $e)
-  {
-    error_log('Bratonien WebDAV derivative lookup #'.$image_id.': '.$e->getMessage());
-  }
-
-  // Auf der Picture-/Fotorama-Seite wird nicht mehr waehrend des HTML-Aufbaus
-  // synchron erzeugt. Fotorama arbeitet lazy: Erst wenn das konkrete Bild in
-  // den Fokus kommt und seine URL abruft, erzeugt dieser Endpoint genau dieses
-  // angeforderte Standard-Derivat aus dem bereits gecachten NC-Preview.
-  $script_name = basename((string)($_SERVER['SCRIPT_NAME'] ?? ''));
-  if ($script_name === 'picture.php')
-  {
-    $ondemand_url = bratonien_tools_webdav_ondemand_derivative_url($image_id, $params);
-    if ($ondemand_url) return $ondemand_url;
-  }
-
-  // Galerie-Fallback: niemals Connector-Platzhalter ausliefern. Solange kein
-  // lokales korrektes Derivat vorliegt, wird das echte vorbereitete NC-Preview
-  // verwendet. Der eigentliche Galerie-Derivattyp wird beim Sync vorgebaut.
-  $preview_url = bratonien_tools_webdav_image_url($image_id, true);
-  return $preview_url ?: $url;
-}

main.inc.php

@@ -1,7 +1,7 @@
 <?php
 /*
 Plugin Name: Bratonien Tools
-Version: 0.9.7.15
+Version: 0.9.7.16
 Description: Erweiterbare Administrationswerkzeuge fuer die Bratonien-Piwigo-Installation.
 Plugin URI: https://github.com/Terranom674/Piwigo_Bratonien_Tools
 Author: Bratonien
@@ -17,7 +17,6 @@ define('BRATONIEN_TOOLS_PATH', PHPWG_PLUGINS_PATH . BRATONIEN_TOOLS_ID . '/');
 
 require_once(BRATONIEN_TOOLS_PATH . 'include/watermark_runtime.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/webdav_image_runtime.inc.php');
-require_once(BRATONIEN_TOOLS_PATH . 'include/webdav_gallery_runtime.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/public_selection.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/picture_navigation.inc.php');
 require_once(BRATONIEN_TOOLS_PATH . 'include/batch_titles.inc.php');
@@ -31,7 +30,6 @@ add_event_handler('get_admin_plugin_menu_links', 'bratonien_tools_admin_menu');
 add_event_handler('loc_end_index_category_thumbnails', 'bratonien_tools_watermark_prepare_album_overview');
 add_event_handler('get_derivative_url', 'bratonien_tools_filter_derivative_url', EVENT_HANDLER_PRIORITY_NEUTRAL, 4);
 add_event_handler('get_src_image_url', 'bratonien_tools_filter_webdav_src_url', EVENT_HANDLER_PRIORITY_NEUTRAL + 50, 2);
-add_event_handler('get_derivative_url', 'bratonien_tools_filter_webdav_gallery_derivative_url', EVENT_HANDLER_PRIORITY_NEUTRAL + 50, 4);
 add_event_handler('loc_end_element_set_global', 'bratonien_tools_batch_titles_register_action');
 add_event_handler('element_set_global_action', 'bratonien_tools_batch_titles_apply', EVENT_HANDLER_PRIORITY_NEUTRAL, 2);
 add_event_handler('init', 'bratonien_tools_watermark_cache_upgrade', EVENT_HANDLER_PRIORITY_NEUTRAL - 40);

runtime/lib/precache-webdav-previews.php

@@ -34,7 +34,7 @@ function fetch_remote_blob($url, $user, $password)
     CURLOPT_HTTPAUTH => CURLAUTH_BASIC,
     CURLOPT_USERPWD => $user.':'.$password,
     CURLOPT_FAILONERROR => false,
-    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.7.1',
+    CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Precache/0.9.7.16',
   );
   bratonien_tools_nc_transport_apply_curl($options, $url);
   curl_setopt_array($ch, $options);
@@ -52,12 +52,11 @@ function fetch_remote_blob($url, $user, $password)
 
 function preview_extension_for_entry(array $entry)
 {
-  $content_type = strtolower(trim((string)($entry['content_type'] ?? '')));
   $path = strtolower((string)($entry['webdav_path'] ?? ''));
-  if ($content_type === 'image/png' || preg_match('/\.png$/', $path))
-  {
-    return 'png';
-  }
+  $extension = strtolower(pathinfo($path, PATHINFO_EXTENSION));
+  if ($extension === 'png') return 'png';
+  if ($extension === 'gif') return 'gif';
+  if ($extension === 'webp') return 'webp';
   return 'jpg';
 }
 
@@ -68,7 +67,7 @@ function preview_target_for_entry($cache_dir, $key, array $entry)
 
 function remove_other_preview_format($cache_dir, $key, $keep_target)
 {
-  foreach (array('jpg', 'png', 'webp') as $ext)
+  foreach (array('jpg', 'png', 'gif', 'webp') as $ext)
   {
     $candidate = $cache_dir.'/'.$key.'.'.$ext;
     if ($candidate !== $keep_target && is_file($candidate)) @unlink($candidate);
@@ -90,13 +89,19 @@ function write_preview_imagick($blob, $target, $extension)
     {
       $image->setImageFormat('png');
     }
+    elseif ($extension === 'gif')
+    {
+      $image->setImageFormat('gif');
+    }
+    elseif ($extension === 'webp')
+    {
+      $image->setImageFormat('webp');
+      $image->setImageCompressionQuality(BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
+    }
     else
     {
       $image->setImageBackgroundColor('white');
-      if (method_exists($image, 'mergeImageLayers'))
-      {
-        $image = $image->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);
-      }
+      if (method_exists($image, 'mergeImageLayers')) $image = $image->mergeImageLayers(Imagick::LAYERMETHOD_FLATTEN);
       $image->setImageFormat('jpeg');
       $image->setImageCompression(Imagick::COMPRESSION_JPEG);
       $image->setImageCompressionQuality(BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
@@ -131,7 +136,7 @@ function write_preview_gd($blob, $target, $extension)
 
     try
     {
-      if ($extension === 'png')
+      if (in_array($extension, array('png', 'gif', 'webp'), true))
       {
         imagealphablending($preview, false);
         imagesavealpha($preview, true);
@@ -149,10 +154,12 @@ function write_preview_gd($blob, $target, $extension)
         fail_preview('GD konnte das Preview nicht skalieren.');
       }
 
-      $written = $extension === 'png'
-        ? imagepng($preview, $target, 6)
-        : imagejpeg($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
-      if (!$written) fail_preview('GD konnte das Preview nicht schreiben.');
+      if ($extension === 'png') $written = imagepng($preview, $target, 6);
+      elseif ($extension === 'gif') $written = function_exists('imagegif') ? imagegif($preview, $target) : false;
+      elseif ($extension === 'webp') $written = function_exists('imagewebp') ? imagewebp($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY) : false;
+      else $written = imagejpeg($preview, $target, BRATONIEN_WEBDAV_PREVIEW_JPEG_QUALITY);
+
+      if (!$written) fail_preview('GD konnte das Preview im Format '.$extension.' nicht schreiben.');
     }
     finally
     {
@@ -168,7 +175,7 @@ function write_preview_gd($blob, $target, $extension)
 function write_preview($blob, $target, $extension)
 {
   $dir = dirname($target);
-  if (!is_dir($dir) && !mkdir($dir, 0755, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');
+  if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) fail_preview('Preview-Verzeichnis konnte nicht angelegt werden.');
 
   if (class_exists('Imagick'))
   {
@@ -190,7 +197,48 @@ function write_preview($blob, $target, $extension)
     @unlink($target);
     fail_preview('Das erzeugte Preview ist ungültig.');
   }
-  @chmod($target, 0644);
+  @chmod($target, 0664);
+}
+
+function local_source_is_hydrated($source_path, $preview)
+{
+  if (!is_file($source_path) || !is_readable($source_path)) return false;
+  $source_size = @getimagesize($source_path);
+  $preview_size = @getimagesize($preview);
+  if (!is_array($source_size) || !is_array($preview_size)) return false;
+  if ((int)$source_size[0] !== (int)$preview_size[0] || (int)$source_size[1] !== (int)$preview_size[1]) return false;
+  $source_bytes = @filesize($source_path);
+  $preview_bytes = @filesize($preview);
+  return $source_bytes !== false && $preview_bytes !== false && (int)$source_bytes === (int)$preview_bytes;
+}
+
+function hydrate_local_source($source_path, $preview)
+{
+  $normalized = str_replace('\\', '/', (string)$source_path);
+  if (!preg_match('#/nc-webdav-source/connection-[0-9]+/root-[0-9]+/#', $normalized))
+  {
+    fail_preview('Unsicherer lokaler Connector-Quellpfad: '.$source_path);
+  }
+  if (!is_file($preview) || !is_readable($preview)) fail_preview('Preview für lokale Quelle fehlt: '.$preview);
+  if (local_source_is_hydrated($source_path, $preview)) return false;
+
+  $dir = dirname($source_path);
+  if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) fail_preview('Lokales Connector-Verzeichnis konnte nicht angelegt werden: '.$dir);
+
+  $tmp = $source_path.'.bratonien-next-'.getmypid();
+  if (!@copy($preview, $tmp)) fail_preview('Preview konnte nicht in lokale Piwigo-Quelle kopiert werden: '.$source_path);
+  @chmod($tmp, 0664);
+  $mtime = @filemtime($preview);
+  if ($mtime) @touch($tmp, $mtime);
+  if (!@rename($tmp, $source_path))
+  {
+    @unlink($tmp);
+    fail_preview('Lokale Piwigo-Quelle konnte nicht ersetzt werden: '.$source_path);
+  }
+  clearstatcache(true, $source_path);
+  $size = @getimagesize($source_path);
+  if (!is_array($size) || empty($size[0]) || empty($size[1])) fail_preview('Lokale Piwigo-Quelle ist nach dem Ersetzen ungültig: '.$source_path);
+  return true;
 }
 
 try
@@ -212,8 +260,8 @@ try
   $mapping = json_decode((string)file_get_contents($mapping_file), true);
   if (!is_array($mapping) || !isset($mapping['files']) || !is_array($mapping['files'])) fail_preview('WebDAV-Mapping ist ungültig.');
 
-  if (!is_dir($cache_dir) && !mkdir($cache_dir, 0755, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
-  @chmod($cache_dir, 0755);
+  if (!is_dir($cache_dir) && !mkdir($cache_dir, 0775, true) && !is_dir($cache_dir)) fail_preview('Preview-Cache konnte nicht angelegt werden.');
+  @chmod($cache_dir, 2775);
 
   $state_file = $cache_dir.'/state.json';
   $old_state = array();
@@ -226,9 +274,10 @@ try
   $new_state = array();
   $generated = 0;
   $cached = 0;
+  $hydrated = 0;
   $errors = 0;
 
-  foreach ($mapping['files'] as $entry)
+  foreach ($mapping['files'] as $local_path=>$entry)
   {
     if (!is_array($entry) || (string)($entry['kind'] ?? '') !== 'file') continue;
     $webdav_path = trim((string)($entry['webdav_path'] ?? ''), '/');
@@ -245,26 +294,29 @@ try
       'version' => BRATONIEN_WEBDAV_PREVIEW_VERSION,
     );
 
-    $old = $old_state[$key] ?? null;
-    if (
-      is_file($target)
-      && is_array($old)
-      && (string)($old['etag'] ?? '') === $etag
-      && (string)($old['format'] ?? '') === $extension
-      && (int)($old['version'] ?? 0) === BRATONIEN_WEBDAV_PREVIEW_VERSION
-    )
-    {
-      $cached++;
-      continue;
-    }
-
     try
     {
-      $url = $base_url.'/remote.php/dav/files/'.rawurlencode($user).'/'.quote_webdav_path($webdav_path);
-      $blob = fetch_remote_blob($url, $user, $password);
-      write_preview($blob, $target, $extension);
-      remove_other_preview_format($cache_dir, $key, $target);
-      $generated++;
+      $old = $old_state[$key] ?? null;
+      $valid_cached = is_file($target)
+        && is_array($old)
+        && (string)($old['etag'] ?? '') === $etag
+        && (string)($old['format'] ?? '') === $extension
+        && (int)($old['version'] ?? 0) === BRATONIEN_WEBDAV_PREVIEW_VERSION;
+
+      if (!$valid_cached)
+      {
+        $url = $base_url.'/remote.php/dav/files/'.rawurlencode($user).'/'.quote_webdav_path($webdav_path);
+        $blob = fetch_remote_blob($url, $user, $password);
+        write_preview($blob, $target, $extension);
+        remove_other_preview_format($cache_dir, $key, $target);
+        $generated++;
+      }
+      else
+      {
+        $cached++;
+      }
+
+      if (hydrate_local_source((string)$local_path, $target)) $hydrated++;
     }
     catch (Throwable $e)
     {
@@ -277,14 +329,14 @@ try
   {
     if (!is_file($file) || basename($file) === 'state.json') continue;
     $name = basename($file);
-    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|webp)$/', $name, $m)) continue;
+    if (!preg_match('/^([a-f0-9]{40})\.(jpg|png|gif|webp)$/', $name, $m)) continue;
     if (!isset($new_state[$m[1]])) @unlink($file);
   }
 
   file_put_contents($state_file, json_encode($new_state, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT)."\n", LOCK_EX);
-  @chmod($state_file, 0644);
+  @chmod($state_file, 0664);
 
-  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' fehler='.$errors."\n";
+  echo 'WebDAV-Previews: erzeugt='.$generated.' vorhanden='.$cached.' lokale_quellen='.$hydrated.' fehler='.$errors."\n";
   exit($errors > 0 ? 1 : 0);
 }
 catch (Throwable $e)

webdav-derivative.php

@@ -1,169 +0,0 @@
-<?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(BRATONIEN_TOOLS_PATH.'include/webdav_gallery_runtime.inc.php');
-
-function bratonien_tools_webdav_derivative_abort($status, $message)
-{
-  http_response_code((int)$status);
-  header('Content-Type: text/plain; charset=utf-8');
-  header('Cache-Control: no-store');
-  echo $message;
-  exit;
-}
-
-function bratonien_tools_webdav_derivative_ajax_response($url)
-{
-  http_response_code(200);
-  header('Content-Type: application/json; charset=utf-8');
-  header('Cache-Control: no-store, max-age=0');
-  echo json_encode(array('url'=>(string)$url), JSON_UNESCAPED_SLASHES);
-  exit;
-}
-
-function bratonien_tools_webdav_derivative_binary_url($image_id, $type)
-{
-  return get_root_url().'plugins/'.BRATONIEN_TOOLS_ID.'/webdav-derivative.php?id='.(int)$image_id.'&type='.rawurlencode((string)$type);
-}
-
-function bratonien_tools_webdav_derivative_fallback($image_id)
-{
-  $url = bratonien_tools_webdav_image_url((int)$image_id, false);
-  if (!$url)
-  {
-    bratonien_tools_webdav_derivative_abort(404, 'WebDAV-Bildquelle ist nicht verfuegbar.');
-  }
-
-  if (isset($_GET['ajaxload']) && (string)$_GET['ajaxload'] === 'true')
-  {
-    bratonien_tools_webdav_derivative_ajax_response($url);
-  }
-
-  header('Cache-Control: no-store');
-  header('Location: '.$url, true, 302);
-  exit;
-}
-
-$image_id = (int)($_GET['id'] ?? 0);
-$type = trim((string)($_GET['type'] ?? ''));
-if ($image_id < 1 || $type === '')
-{
-  bratonien_tools_webdav_derivative_abort(400, 'Bild-ID oder Derivattyp fehlt.');
-}
-
-$permission_condition = get_sql_condition_FandF(array('forbidden_categories'=>'category_id'), null, true);
-$access_result = pwg_query('SELECT 1 FROM '.IMAGE_CATEGORY_TABLE.' WHERE image_id='.$image_id.' AND '.$permission_condition.' LIMIT 1');
-if (!pwg_db_num_rows($access_result))
-{
-  bratonien_tools_webdav_derivative_abort(403, 'Kein Zugriff auf dieses Bild.');
-}
-
-if (!class_exists('ImageStdParams') || !class_exists('DerivativeImage') || !class_exists('SrcImage'))
-{
-  require_once(PHPWG_ROOT_PATH.'include/derivative.inc.php');
-}
-
-$params = @ImageStdParams::get_by_type($type);
-if (!$params)
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Unbekannter Piwigo-Derivattyp.');
-}
-
-$result = pwg_query('SELECT * FROM '.IMAGES_TABLE.' WHERE id='.$image_id.' LIMIT 1');
-if (!pwg_db_num_rows($result))
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Bild wurde nicht gefunden.');
-}
-$row = pwg_db_fetch_assoc($result);
-$src = new SrcImage($row);
-$info = bratonien_tools_webdav_image_source_info($image_id);
-if (!$info)
-{
-  bratonien_tools_webdav_derivative_abort(404, 'Keine WebDAV-Quelle fuer dieses Bild gefunden.');
-}
-
-$preview = bratonien_tools_webdav_preview_path($info);
-if (!$preview || !is_file($preview) || !is_readable($preview))
-{
-  bratonien_tools_webdav_derivative_fallback($image_id);
-}
-
-$derivative = new DerivativeImage($params, $src);
-if ($derivative->same_as_source())
-{
-  bratonien_tools_webdav_derivative_fallback($image_id);
-}
-
-$target = $derivative->get_path();
-if ($target === '')
-{
-  bratonien_tools_webdav_derivative_fallback($image_id);
-}
-
-if (!bratonien_tools_webdav_derivative_matches_preview($target, $params, $image_id))
-{
-  if (is_file($target))
-  {
-    @unlink($target);
-    clearstatcache(true, $target);
-  }
-
-  $detail = '';
-  if (!bratonien_tools_webdav_generate_derivative($params, $src, $detail))
-  {
-    error_log('Bratonien WebDAV on-demand derivative #'.$image_id.' type='.$type.': '.$detail);
-    bratonien_tools_webdav_derivative_fallback($image_id);
-  }
-}
-
-if (!bratonien_tools_webdav_derivative_matches_preview($target, $params, $image_id))
-{
-  bratonien_tools_webdav_derivative_fallback($image_id);
-}
-
-// Piwigos thumbnails.loader.js fordert nicht gecachte Derivate mit
-// ?ajaxload=true an und erwartet JSON {"url":"..."}. Erst diese URL wird
-// danach als echtes Bild geladen. Binärdaten an dieser Stelle führen direkt
-// zum Piwigo-Fehlersymbol.
-if (isset($_GET['ajaxload']) && (string)$_GET['ajaxload'] === 'true')
-{
-  bratonien_tools_webdav_derivative_ajax_response(
-    bratonien_tools_webdav_derivative_binary_url($image_id, $type)
-  );
-}
-
-$size = @filesize($target);
-$mtime = @filemtime($target) ?: time();
-$etag = sha1($target.'|'.$mtime.'|'.($size ?: 0));
-$extension = strtolower(pathinfo($target, PATHINFO_EXTENSION));
-$content_type = 'image/jpeg';
-if ($extension === 'png') $content_type = 'image/png';
-elseif ($extension === 'gif') $content_type = 'image/gif';
-elseif ($extension === 'webp') $content_type = 'image/webp';
-
-header('Content-Type: '.$content_type);
-if ($size !== false) header('Content-Length: '.(string)$size);
-header('ETag: "'.$etag.'"');
-header('Last-Modified: '.gmdate('D, d M Y H:i:s', $mtime).' GMT');
-header('Cache-Control: private, max-age=86400, must-revalidate');
-header('X-Content-Type-Options: nosniff');
-
-$client_etag = trim((string)($_SERVER['HTTP_IF_NONE_MATCH'] ?? ''), " \t\r\n\"");
-if ($client_etag !== '' && hash_equals($etag, $client_etag))
-{
-  http_response_code(304);
-  exit;
-}
-
-if (($_SERVER['REQUEST_METHOD'] ?? 'GET') !== 'HEAD')
-{
-  readfile($target);
-}

webdav-image.php

@@ -19,18 +19,6 @@ function bratonien_tools_webdav_image_abort($status, $message)
   exit;
 }
 
-function bratonien_tools_webdav_image_ajax_response($image_id, $preview)
-{
-  $url = get_root_url().'plugins/'.BRATONIEN_TOOLS_ID.'/webdav-image.php?id='.(int)$image_id;
-  if ($preview) $url .= '&preview=1';
-
-  http_response_code(200);
-  header('Content-Type: application/json; charset=utf-8');
-  header('Cache-Control: no-store, max-age=0');
-  echo json_encode(array('url'=>$url), JSON_UNESCAPED_SLASHES);
-  exit;
-}
-
 function bratonien_tools_webdav_image_decrypt_secret($blob, $hex_key)
 {
   $hex_key = trim((string)$hex_key);
@@ -64,17 +52,7 @@ if (!pwg_db_num_rows($access_result)) bratonien_tools_webdav_image_abort(403, 'K
 $source = bratonien_tools_webdav_image_source_info($image_id);
 if (!$source) bratonien_tools_webdav_image_abort(404, 'Keine WebDAV-Quelle für dieses Bild gefunden.');
 
-$preview_requested = !empty($_GET['preview']);
-
-// Piwigos Standard-Lader erwartet bei ?ajaxload=true JSON und lädt erst die
-// darin enthaltene URL als Bild. Binärdaten in diesem Request werden als
-// Ladefehler behandelt und durch errors_small.png ersetzt.
-if (isset($_GET['ajaxload']) && (string)$_GET['ajaxload'] === 'true')
-{
-  bratonien_tools_webdav_image_ajax_response($image_id, $preview_requested);
-}
-
-if ($preview_requested)
+if (!empty($_GET['preview']))
 {
   $preview = bratonien_tools_webdav_preview_path($source);
   if ($preview)
@@ -143,7 +121,7 @@ $options = array(
   CURLOPT_USERPWD => $user.':'.$password,
   CURLOPT_RETURNTRANSFER => false,
   CURLOPT_FAILONERROR => false,
-  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.7.15',
+  CURLOPT_USERAGENT => 'Bratonien-Tools-WebDAV-Image/0.9.7.16',
   CURLOPT_HEADERFUNCTION => function($ch, $line)
   {
     $length = strlen($line);