From 5dbbe2ccf9570e226f47f89a86204b5a9546264b Mon Sep 17 00:00:00 2001
From: provokateurin <kate@provokateurin.de>
Date: Tue, 3 Mar 2026 15:25:54 +0100
Subject: [PATCH] fix(dav): Use share initiator to get the share node, because
 the owner might on another server

Signed-off-by: provokateurin <kate@provokateurin.de>
---
 apps/dav/appinfo/v1/publicwebdav.php                 | 3 +--
 apps/dav/appinfo/v2/publicremote.php                 | 3 +--
 apps/dav/lib/Files/Sharing/PublicLinkCheckPlugin.php | 2 +-
 3 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/apps/dav/appinfo/v1/publicwebdav.php b/apps/dav/appinfo/v1/publicwebdav.php
index 2eaf05ca2d9..7b576496cc8 100644
--- a/apps/dav/appinfo/v1/publicwebdav.php
+++ b/apps/dav/appinfo/v1/publicwebdav.php
@@ -92,7 +92,6 @@ $server = $serverFactory->createServer(
 		}
 
 		$share = $authBackend->getShare();
-		$owner = $share->getShareOwner();
 		$isReadable = $share->getPermissions() & Constants::PERMISSION_READ;
 		$fileId = $share->getNodeId();
 
@@ -107,7 +106,7 @@ $server = $serverFactory->createServer(
 		Filesystem::logWarningWhenAddingStorageWrapper($previousLog);
 
 		$rootFolder = Server::get(IRootFolder::class);
-		$userFolder = $rootFolder->getUserFolder($owner);
+		$userFolder = $rootFolder->getUserFolder($share->getSharedBy());
 		$node = $userFolder->getFirstNodeById($fileId);
 		if (!$node) {
 			throw new \Sabre\DAV\Exception\NotFound();
diff --git a/apps/dav/appinfo/v2/publicremote.php b/apps/dav/appinfo/v2/publicremote.php
index facc4041bcc..d1286a577c7 100644
--- a/apps/dav/appinfo/v2/publicremote.php
+++ b/apps/dav/appinfo/v2/publicremote.php
@@ -99,7 +99,6 @@ $server = $serverFactory->createServer(true, $baseuri, $requestUri, $authPlugin,
 	}
 
 	$share = $authBackend->getShare();
-	$owner = $share->getShareOwner();
 	$isReadable = $share->getPermissions() & Constants::PERMISSION_READ;
 	$fileId = $share->getNodeId();
 
@@ -135,7 +134,7 @@ $server = $serverFactory->createServer(true, $baseuri, $requestUri, $authPlugin,
 	Filesystem::logWarningWhenAddingStorageWrapper($previousLog);
 
 	$rootFolder = Server::get(IRootFolder::class);
-	$userFolder = $rootFolder->getUserFolder($owner);
+	$userFolder = $rootFolder->getUserFolder($share->getSharedBy());
 	$node = $userFolder->getFirstNodeById($fileId);
 	if (!$node) {
 		throw new NotFound();
diff --git a/apps/dav/lib/Files/Sharing/PublicLinkCheckPlugin.php b/apps/dav/lib/Files/Sharing/PublicLinkCheckPlugin.php
index c3b269fb9ed..11b328d2194 100644
--- a/apps/dav/lib/Files/Sharing/PublicLinkCheckPlugin.php
+++ b/apps/dav/lib/Files/Sharing/PublicLinkCheckPlugin.php
@@ -43,7 +43,7 @@ class PublicLinkCheckPlugin extends ServerPlugin {
 	}
 
 	public function beforeMethod(RequestInterface $request, ResponseInterface $response) {
-		// verify that the owner didn't have their share permissions revoked
+		// verify that the initiator didn't have their share permissions revoked
 		if ($this->fileInfo && !$this->fileInfo->isShareable()) {
 			throw new NotFound();
 		}