From 5cba01057ef6b28af1cb03aac2a55742c50fe98b Mon Sep 17 00:00:00 2001
From: Louis Chemineau <louis@chmn.me>
Date: Wed, 15 Mar 2023 15:27:14 +0100
Subject: [PATCH] Expose DAV permissions on album and places photos

Signed-off-by: Louis Chemineau <louis@chmn.me>
---
 lib/Sabre/Album/PropFindPlugin.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Sabre/Album/PropFindPlugin.php b/lib/Sabre/Album/PropFindPlugin.php
index 9f3572cef..034d19ba1 100644
--- a/lib/Sabre/Album/PropFindPlugin.php
+++ b/lib/Sabre/Album/PropFindPlugin.php
@@ -26,6 +26,7 @@
 use OC\Metadata\IMetadataManager;
 use OCA\DAV\Connector\Sabre\FilesPlugin;
 use OCA\Photos\Album\AlbumMapper;
+use OCP\Files\DavUtil;
 use OCP\IConfig;
 use OCP\IPreview;
 use OCP\Files\NotFoundException;
@@ -45,6 +46,7 @@ class PropFindPlugin extends ServerPlugin {
 	public const LAST_PHOTO_PROPERTYNAME = '{http://nextcloud.org/ns}last-photo';
 	public const NBITEMS_PROPERTYNAME = '{http://nextcloud.org/ns}nbItems';
 	public const COLLABORATORS_PROPERTYNAME = '{http://nextcloud.org/ns}collaborators';
+	public const PERMISSIONS_PROPERTYNAME = '{http://owncloud.org/ns}permissions';
 
 	public const TAG_FAVORITE = '_$!<Favorite>!$_';
 
@@ -105,6 +107,8 @@ public function propFind(PropFind $propFind, INode $node): void {
 			$propFind->handle(self::FILE_NAME_PROPERTYNAME, fn () => $node->getFile()->getName());
 			$propFind->handle(self::FAVORITE_PROPERTYNAME, fn () => $node->isFavorite() ? 1 : 0);
 			$propFind->handle(FilesPlugin::HAS_PREVIEW_PROPERTYNAME, fn () => json_encode($this->previewManager->isAvailable($fileInfo)));
+			// Remove G permission as it does not make sense in the context of photos.
+			$propFind->handle(FilesPlugin::PERMISSIONS_PROPERTYNAME, fn () => str_replace('G', '', DavUtil::getDavPermissions($node->getFileInfo())));
 
 			if ($this->metadataEnabled) {
 				$propFind->handle(FilesPlugin::FILE_METADATA_SIZE, function () use ($node) {