Implement ownerless shares

apps/files/lib/Service/OwnershipTransferService.php

@@ -310,7 +310,7 @@ private function collectUsersShares(
 		foreach ($supportedShareTypes as $shareType) {
 			$offset = 0;
 			while (true) {
-				$sharePage = $this->shareManager->getSharesBy($sourceUid, $shareType, null, true, 50, $offset);
+				$sharePage = $this->shareManager->getSharesBy($sourceUid, $shareType, null, true, 50, $offset, onlyValid: false);
 				$progress->advance(count($sharePage));
 				if (empty($sharePage)) {
 					break;
@@ -464,7 +464,7 @@ private function restoreShares(
 						}
 						$share->setNodeId($newNodeId);
 
-						$this->shareManager->updateShare($share);
+						$this->shareManager->updateShare($share, onlyValid: false);
 					}
 				}
 			} catch (NotFoundException $e) {

apps/files_sharing/lib/Controller/ShareAPIController.php

@@ -35,6 +35,7 @@
 use OCP\Files\Folder;
 use OCP\Files\InvalidPathException;
 use OCP\Files\IRootFolder;
+use OCP\Files\Mount\IShareOwnerlessMount;
 use OCP\Files\Node;
 use OCP\Files\NotFoundException;
 use OCP\HintException;
@@ -1235,18 +1236,6 @@ public function updateShare(
 		if ($share->getShareType() === IShare::TYPE_LINK
 			|| $share->getShareType() === IShare::TYPE_EMAIL) {
 
-			/**
-			 * We do not allow editing link shares that the current user
-			 * doesn't own. This is confusing and lead to errors when
-			 * someone else edit a password or expiration date without
-			 * the share owner knowing about it.
-			 * We only allow deletion
-			 */
-
-			if ($share->getSharedBy() !== $this->userId) {
-				throw new OCSForbiddenException($this->l->t('You are not allowed to edit link shares that you don\'t own'));
-			}
-
 			// Update hide download state
 			$attributes = $share->getAttributes() ?? $share->newAttributes();
 			if ($hideDownload === 'true') {
@@ -1553,6 +1542,12 @@ protected function canEditShare(IShare $share): bool {
 			return true;
 		}
 
+		$userFolder = $this->rootFolder->getUserFolder($this->userId);
+		$file = $userFolder->getFirstNodeById($share->getNodeId());
+		if ($file?->getMountPoint() instanceof IShareOwnerlessMount && $this->shareProviderResharingRights($this->userId, $share, $file)) {
+			return true;
+		}
+
 		//! we do NOT support some kind of `admin` in groups.
 		//! You cannot edit shares shared to a group you're
 		//! a member of if you're not the share owner or the file owner!
@@ -1588,6 +1583,12 @@ protected function canDeleteShare(IShare $share): bool {
 			return true;
 		}
 
+		$userFolder = $this->rootFolder->getUserFolder($this->userId);
+		$file = $userFolder->getFirstNodeById($share->getNodeId());
+		if ($file?->getMountPoint() instanceof IShareOwnerlessMount && $this->shareProviderResharingRights($this->userId, $share, $file)) {
+			return true;
+		}
+
 		return false;
 	}
 

apps/files_sharing/lib/Updater.php

@@ -50,20 +50,24 @@ private static function moveShareInOrOutOfShare($path): void {
 
 		$shareManager = \OC::$server->getShareManager();
 
+		// We intentionally include invalid shares, as they have been automatically invalidated due to the node no longer
+		// being accessible for the user. Only in this case where we adjust the share after it was moved we want to ignore
+		// this to be able to still adjust it.
+
 		// FIXME: should CIRCLES be included here ??
-		$shares = $shareManager->getSharesBy($user->getUID(), IShare::TYPE_USER, $src, false, -1);
-		$shares = array_merge($shares, $shareManager->getSharesBy($user->getUID(), IShare::TYPE_GROUP, $src, false, -1));
-		$shares = array_merge($shares, $shareManager->getSharesBy($user->getUID(), IShare::TYPE_ROOM, $src, false, -1));
+		$shares = $shareManager->getSharesBy($user->getUID(), IShare::TYPE_USER, $src, false, -1, onlyValid: false);
+		$shares = array_merge($shares, $shareManager->getSharesBy($user->getUID(), IShare::TYPE_GROUP, $src, false, -1, onlyValid: false));
+		$shares = array_merge($shares, $shareManager->getSharesBy($user->getUID(), IShare::TYPE_ROOM, $src, false, -1, onlyValid: false));
 
 		if ($src instanceof Folder) {
 			$cacheAccess = Server::get(FileAccess::class);
 
 			$sourceStorageId = $src->getStorage()->getCache()->getNumericStorageId();
 			$sourceInternalPath = $src->getInternalPath();
 			$subShares = array_merge(
-				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_USER),
-				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_GROUP),
-				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_ROOM),
+				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_USER, onlyValid: false),
+				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_GROUP, onlyValid: false),
+				$shareManager->getSharesBy($user->getUID(), IShare::TYPE_ROOM, onlyValid: false),
 			);
 			$shareSourceIds = array_map(fn (IShare $share) => $share->getNodeId(), $subShares);
 			$shareSources = $cacheAccess->getByFileIdsInStorage($shareSourceIds, $sourceStorageId);
@@ -111,7 +115,7 @@ private static function moveShareInOrOutOfShare($path): void {
 
 			$share->setShareOwner($newOwner);
 			$share->setPermissions($newPermissions);
-			$shareManager->updateShare($share);
+			$shareManager->updateShare($share, onlyValid: false);
 		}
 	}
 

apps/files_sharing/src/components/SharingEntry.vue

@@ -78,6 +78,11 @@ export default {
 			} else if (this.share.type === this.SHARE_TYPES.SHARE_TYPE_GUEST) {
 				title += ` (${t('files_sharing', 'guest')})`
 			}
+			if (!this.isShareOwner && this.share.ownerDisplayName) {
+				title += ' ' + t('files_sharing', 'by {initiator}', {
+					initiator: this.share.ownerDisplayName,
+				})
+			}
 			return title
 		},
 		tooltip() {

apps/files_sharing/tests/Controller/ShareAPIControllerTest.php

@@ -18,6 +18,7 @@
 use OCP\Files\Folder;
 use OCP\Files\IRootFolder;
 use OCP\Files\Mount\IMountPoint;
+use OCP\Files\Mount\IShareOwnerlessMount;
 use OCP\Files\NotFoundException;
 use OCP\Files\Storage\IStorage;
 use OCP\IConfig;
@@ -232,10 +233,20 @@ public function testDeleteShareLocked(): void {
 		$this->expectExceptionMessage('Could not delete share');
 
 		$node = $this->getMockBuilder(File::class)->getMock();
+		$node->method('getId')->willReturn(1);
 
 		$share = $this->newShare();
 		$share->setNode($node);
 
+		$userFolder = $this->getMockBuilder(Folder::class)->getMock();
+		$this->rootFolder->method('getUserFolder')
+			->with($this->currentUser)
+			->willReturn($userFolder);
+
+		$userFolder->method('getFirstNodeById')
+			->with($share->getNodeId())
+			->willReturn($node);
+
 		$this->shareManager
 			->expects($this->once())
 			->method('getShareById')
@@ -476,6 +487,62 @@ public function testDeleteSharedWithGroupIDontBelongTo(): void {
 		$this->ocs->deleteShare(42);
 	}
 
+	public function testDeleteShareOwnerless(): void {
+		$ocs = $this->mockFormatShare();
+
+		$mount = $this->createMock(IShareOwnerlessMount::class);
+
+		$file = $this->createMock(File::class);
+		$file
+			->expects($this->exactly(2))
+			->method('getPermissions')
+			->willReturn(Constants::PERMISSION_SHARE);
+		$file
+			->expects($this->once())
+			->method('getMountPoint')
+			->willReturn($mount);
+
+		$userFolder = $this->createMock(Folder::class);
+		$userFolder
+			->expects($this->exactly(2))
+			->method('getFirstNodeById')
+			->with(2)
+			->willReturn($file);
+
+		$this->rootFolder
+			->method('getUserFolder')
+			->with($this->currentUser)
+			->willReturn($userFolder);
+
+		$share = $this->createMock(IShare::class);
+		$share
+			->expects($this->once())
+			->method('getNode')
+			->willReturn($file);
+		$share
+			->expects($this->exactly(2))
+			->method('getNodeId')
+			->willReturn(2);
+		$share
+			->expects($this->exactly(2))
+			->method('getPermissions')
+			->willReturn(Constants::PERMISSION_SHARE);
+
+		$this->shareManager
+			->expects($this->once())
+			->method('getShareById')
+			->with('ocinternal:1', $this->currentUser)
+			->willReturn($share);
+
+		$this->shareManager
+			->expects($this->once())
+			->method('deleteShare')
+			->with($share);
+
+		$result = $ocs->deleteShare(1);
+		$this->assertInstanceOf(DataResponse::class, $result);
+	}
+
 	/*
 	 * FIXME: Enable once we have a federated Share Provider
 
@@ -3748,6 +3815,63 @@ public function testUpdateShareCanIncreasePermissionsIfOwner(): void {
 		$this->assertInstanceOf(DataResponse::class, $result);
 	}
 
+	public function testUpdateShareOwnerless(): void {
+		$ocs = $this->mockFormatShare();
+
+		$mount = $this->createMock(IShareOwnerlessMount::class);
+
+		$file = $this->createMock(File::class);
+		$file
+			->expects($this->exactly(2))
+			->method('getPermissions')
+			->willReturn(Constants::PERMISSION_SHARE);
+		$file
+			->expects($this->once())
+			->method('getMountPoint')
+			->willReturn($mount);
+
+		$userFolder = $this->createMock(Folder::class);
+		$userFolder
+			->expects($this->exactly(2))
+			->method('getFirstNodeById')
+			->with(2)
+			->willReturn($file);
+
+		$this->rootFolder
+			->method('getUserFolder')
+			->with($this->currentUser)
+			->willReturn($userFolder);
+
+		$share = $this->createMock(IShare::class);
+		$share
+			->expects($this->once())
+			->method('getNode')
+			->willReturn($file);
+		$share
+			->expects($this->exactly(2))
+			->method('getNodeId')
+			->willReturn(2);
+		$share
+			->expects($this->exactly(2))
+			->method('getPermissions')
+			->willReturn(Constants::PERMISSION_SHARE);
+
+		$this->shareManager
+			->expects($this->once())
+			->method('getShareById')
+			->with('ocinternal:1', $this->currentUser)
+			->willReturn($share);
+
+		$this->shareManager
+			->expects($this->once())
+			->method('updateShare')
+			->with($share)
+			->willReturn($share);
+
+		$result = $ocs->updateShare(1, Constants::PERMISSION_ALL);
+		$this->assertInstanceOf(DataResponse::class, $result);
+	}
+
 	public function dataFormatShare() {
 		$file = $this->getMockBuilder(File::class)->getMock();
 		$folder = $this->getMockBuilder(Folder::class)->getMock();

dist/146-146.js.map.license

@@ -0,0 +1 @@
+146-146.js.license

lib/composer/composer/autoload_classmap.php

@@ -409,6 +409,7 @@
     'OCP\\Files\\Mount\\IMountManager' => $baseDir . '/lib/public/Files/Mount/IMountManager.php',
     'OCP\\Files\\Mount\\IMountPoint' => $baseDir . '/lib/public/Files/Mount/IMountPoint.php',
     'OCP\\Files\\Mount\\IMovableMount' => $baseDir . '/lib/public/Files/Mount/IMovableMount.php',
+    'OCP\\Files\\Mount\\IShareOwnerlessMount' => $baseDir . '/lib/public/Files/Mount/IShareOwnerlessMount.php',
     'OCP\\Files\\Mount\\ISystemMountPoint' => $baseDir . '/lib/public/Files/Mount/ISystemMountPoint.php',
     'OCP\\Files\\Node' => $baseDir . '/lib/public/Files/Node.php',
     'OCP\\Files\\NotEnoughSpaceException' => $baseDir . '/lib/public/Files/NotEnoughSpaceException.php',

lib/composer/composer/autoload_static.php

@@ -450,6 +450,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OCP\\Files\\Mount\\IMountManager' => __DIR__ . '/../../..' . '/lib/public/Files/Mount/IMountManager.php',
         'OCP\\Files\\Mount\\IMountPoint' => __DIR__ . '/../../..' . '/lib/public/Files/Mount/IMountPoint.php',
         'OCP\\Files\\Mount\\IMovableMount' => __DIR__ . '/../../..' . '/lib/public/Files/Mount/IMovableMount.php',
+        'OCP\\Files\\Mount\\IShareOwnerlessMount' => __DIR__ . '/../../..' . '/lib/public/Files/Mount/IShareOwnerlessMount.php',
         'OCP\\Files\\Mount\\ISystemMountPoint' => __DIR__ . '/../../..' . '/lib/public/Files/Mount/ISystemMountPoint.php',
         'OCP\\Files\\Node' => __DIR__ . '/../../..' . '/lib/public/Files/Node.php',
         'OCP\\Files\\NotEnoughSpaceException' => __DIR__ . '/../../..' . '/lib/public/Files/NotEnoughSpaceException.php',

lib/private/Share20/DefaultShareProvider.php

@@ -798,13 +798,15 @@ public function getSharesByPath(Node $path) {
 			->andWhere(
 				$qb->expr()->orX(
 					$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_USER)),
-					$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_GROUP))
+					$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_GROUP)),
+					$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_LINK)),
 				)
 			)
 			->andWhere($qb->expr()->orX(
 				$qb->expr()->eq('item_type', $qb->createNamedParameter('file')),
 				$qb->expr()->eq('item_type', $qb->createNamedParameter('folder'))
 			))
+			->orderBy('id', 'ASC')
 			->executeQuery();
 
 		$shares = [];