Misc fixes related to sharing in 4.0 (#2325)

* Image element should not output a broken thumbnail if not shared. fixes xibosignage/xibo#3291
* Module images shouldn't be accessible to all (fixed a pending TODO).
* Region sharing should automatically share its region playlist xibosignage/xibo#3290

lib/Controller/Layout.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * Copyright (C) 2023 Xibo Signage Ltd
+ * Copyright (C) 2024 Xibo Signage Ltd
  *
  * Xibo - Digital Signage - https://xibosignage.com
  *
@@ -2599,11 +2599,15 @@ public function downloadBackground(Request $request, Response $response, $id)
             $this->getConfig()->getSetting('SENDFILE_MODE')
         );
         $downloader->useLogger($this->getLog()->getLoggerInterface());
-        $response = $downloader->imagePreview($this->getSanitizer([
-            'width' => $layout->width,
-            'height' => $layout->height,
-            'proportional' => 0
-        ]), $media->storedAs, $response);
+        $response = $downloader->imagePreview(
+            $this->getSanitizer([
+                'width' => $layout->width,
+                'height' => $layout->height,
+                'proportional' => 0,
+            ]),
+            $media->storedAs,
+            $response,
+        );
 
         $this->setNoOutput(true);
         return $this->render($request, $response);

lib/Controller/Library.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * Copyright (C) 2023 Xibo Signage Ltd
+ * Copyright (C) 2024 Xibo Signage Ltd
  *
  * Xibo - Digital Signage - https://xibosignage.com
  *
@@ -1585,23 +1585,19 @@ public function getLibraryCacheUri()
      */
     public function download(Request $request, Response $response, $id)
     {
+        $this->setNoOutput();
+
         // We can download by mediaId or by mediaName.
         if (is_numeric($id)) {
             $media = $this->mediaFactory->getById($id);
         } else {
             $media = $this->mediaFactory->getByName($id);
         }
 
-        $this->getLog()->debug('Download request for mediaId ' . $id
+        $this->getLog()->debug('download: Download request for mediaId ' . $id
             . '. Media is a ' . $media->mediaType . ', is system file:' . $media->moduleSystemFile);
 
-        // TODO: Permissions check
-        //  decide how we grant permissions to module files.
-        if ($media->mediaType !== 'module' && !$this->getUser()->checkViewable($media)) {
-            throw new AccessDeniedException();
-        }
-
-        // Make a module
+        // Create the appropriate module
         if ($media->mediaType === 'module') {
             $module = $this->moduleFactory->getByType('image');
         } else {
@@ -1622,29 +1618,43 @@ public function download(Request $request, Response $response, $id)
 
         $params = $this->getSanitizer($request->getParams());
         if ($params->getCheckbox('preview') == 1) {
+            $this->getLog()->debug('download: preview mode, seeing if we can output an image/video');
+
+            // Output a 1px image if we're not allowed to see the media.
+            if (!$this->getUser()->checkViewable($media)) {
+                echo Img::make($this->getConfig()->uri('img/1x1.png', true))->encode();
+                return $this->render($request, $response);
+            }
+
             // Various different behaviours for the different types of file.
             if ($module->type === 'image') {
                 $response = $downloader->imagePreview(
                     $params,
                     $media->storedAs,
                     $response,
-                    $this->getConfig()->uri('img/error.png', true)
+                    $this->getUser()->checkViewable($media),
                 );
             } else if ($module->type === 'video') {
                 $response = $downloader->imagePreview(
                     $params,
                     $media->mediaId . '_videocover.png',
                     $response,
-                    $this->getConfig()->uri('img/1x1.png', true)
+                    $this->getUser()->checkViewable($media),
                 );
             } else {
                 $response = $downloader->download($media, $response, $media->getMimeType());
             }
         } else {
+            $this->getLog()->debug('download: not preview mode, expect a full download');
+
+            // We are not a preview, and therefore we ought to check sharing before we download
+            if (!$this->getUser()->checkViewable($media)) {
+                throw new AccessDeniedException();
+            }
+
             $response = $downloader->download($media, $response, null, $params->getString('attachment'));
         }
 
-        $this->setNoOutput(true);
         return $this->render($request, $response);
     }
 

lib/Controller/User.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * Copyright (C) 2023 Xibo Signage Ltd
+ * Copyright (C) 2024 Xibo Signage Ltd
  *
  * Xibo - Digital Signage - https://xibosignage.com
  *
@@ -1908,13 +1908,26 @@ public function permissions(Request $request, Response $response, $entity, $id)
             if ($object->permissionsClass() == 'Xibo\Entity\Campaign') {
                 $this->getLog()->debug('Changing owner on child Layout');
 
-                $this->getDispatcher()->dispatch(LayoutOwnerChangeEvent::$NAME, new LayoutOwnerChangeEvent($object->getId(), $ownerId));
+                $this->getDispatcher()->dispatch(
+                    new LayoutOwnerChangeEvent($object->getId(), $ownerId),
+                    LayoutOwnerChangeEvent::$NAME,
+                );
             }
         }
 
         if ($object->permissionsClass() === 'Xibo\Entity\Folder') {
             /** @var $object \Xibo\Entity\Folder */
             $object->managePermissions();
+        } else if ($object->permissionsClass() === 'Xibo\Entity\Region') {
+            /** @var $object \Xibo\Entity\Region */
+            // The regions own playlist should always have the same permissions.
+            $permissions = $this->permissionFactory->getAllByObjectId(
+                $this->getUser(),
+                'Xibo\Entity\Playlist',
+                $object->getPlaylist()->playlistId
+            );
+
+            $this->updatePermissions($permissions, $groupIds);
         }
 
         // Return

lib/Controller/Widget.php

@@ -1212,6 +1212,22 @@ public function getData(Request $request, Response $response, $regionId, $id)
             $this->getLog()->debug('getData: Returning cache');
         }
 
+        // Add permissions needed to see linked media
+        $media = $widgetDataProviderCache->getCachedMediaIds();
+        $this->getLog()->debug('getData: linking ' . count($media) . ' images');
+
+        foreach ($media as $mediaId) {
+            // We link these module images to the user.
+            foreach ($this->permissionFactory->getAllByObjectId(
+                $this->getUser(),
+                'Xibo\Entity\Media',
+                $mediaId,
+            ) as $permission) {
+                $permission->view = 1;
+                $permission->save();
+            }
+        }
+
         // Decorate for output.
         $data = $widgetDataProviderCache->decorateForPreview(
             $dataProvider->getData(),

lib/Widget/Provider/DataProvider.php

@@ -1,6 +1,6 @@
 <?php
 /*
- * Copyright (C) 2023 Xibo Signage Ltd
+ * Copyright (C) 2024 Xibo Signage Ltd
  *
  * Xibo - Digital Signage - https://xibosignage.com
  *
@@ -364,7 +364,7 @@ public function getImages(): array
     }
 
     /**
-     * @return \Xibo\Entity\Media[]
+     * @return int[]
      */
     public function getImageIds(): array
     {

ui/src/layout-editor/viewer.js

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2023 Xibo Signage Ltd
+ * Copyright (C) 2024 Xibo Signage Ltd
  *
  * Xibo - Digital Signage - https://xibosignage.com
  *
@@ -1884,7 +1884,8 @@ Viewer.prototype.renderElementContent = function(
         hbsHtml.match(mediaURLRegex)?.forEach((match) => {
           const mediaId = match.split('[[mediaId=')[1].split(']]')[0];
           const mediaUrl =
-            urlsForApi.library.download.url.replace(':id', mediaId);
+            urlsForApi.library.download.url.replace(':id', mediaId) +
+              '?preview=1';
 
           // Replace asset id with asset url
           hbsHtml = hbsHtml.replace(match, mediaUrl);