nextcloud · sorbaugh · May 15, 2025 · May 5, 2025
diff --git a/apps/federatedfilesharing/lib/FederatedShareProvider.php b/apps/federatedfilesharing/lib/FederatedShareProvider.php
@@ -26,14 +26,15 @@
 use OCP\Share\Exceptions\ShareNotFound;
 use OCP\Share\IShare;
 use OCP\Share\IShareProvider;
+use OCP\Share\IShareProviderSupportsAllSharesInFolder;
 use Psr\Log\LoggerInterface;
 
 /**
  * Class FederatedShareProvider
  *
  * @package OCA\FederatedFileSharing
  */
-class FederatedShareProvider implements IShareProvider {
+class FederatedShareProvider implements IShareProvider, IShareProviderSupportsAllSharesInFolder {
 	public const SHARE_TYPE_REMOTE = 6;
 
 	/** @var string */
@@ -553,7 +554,17 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 		if (!$shallow) {
 			throw new \Exception('non-shallow getSharesInFolder is no longer supported');
 		}
+		return $this->getSharesInFolderInternal($userId, $node, $reshares);
+	}
+
+	public function getAllSharesInFolder(Folder $node): array {
+		return $this->getSharesInFolderInternal(null, $node, null);
+	}
 
+	/**
+	 * @return array<int, list<IShare>>
+	 */
+	private function getSharesInFolderInternal(?string $userId, Folder $node, ?bool $reshares): array {
 		$qb = $this->dbConnection->getQueryBuilder();
 		$qb->select('*')
 			->from('share', 's')
@@ -562,18 +573,20 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 				$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_REMOTE))
 			);
 
-		/**
-		 * Reshares for this user are shares where they are the owner.
-		 */
-		if ($reshares === false) {
-			$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
-		} else {
-			$qb->andWhere(
-				$qb->expr()->orX(
-					$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
-					$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
-				)
-			);
+		if ($userId !== null) {
+			/**
+			 * Reshares for this user are shares where they are the owner.
+			 */
+			if ($reshares !== true) {
+				$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
+			} else {
+				$qb->andWhere(
+					$qb->expr()->orX(
+						$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
+						$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
+					)
+				);
+			}
 		}
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));

diff --git a/apps/sharebymail/lib/ShareByMailProvider.php b/apps/sharebymail/lib/ShareByMailProvider.php
@@ -1112,6 +1112,17 @@ protected function getRawShare(int $id): array {
 	}
 
 	public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = true): array {
+		return $this->getSharesInFolderInternal($userId, $node, $reshares);
+	}
+
+	public function getAllSharesInFolder(Folder $node): array {
+		return $this->getSharesInFolderInternal(null, $node, null);
+	}
+
+	/**
+	 * @return array<int, list<IShare>>
+	 */
+	private function getSharesInFolderInternal(?string $userId, Folder $node, ?bool $reshares): array {
 		$qb = $this->dbConnection->getQueryBuilder();
 		$qb->select('*')
 			->from('share', 's')
@@ -1120,18 +1131,20 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 				$qb->expr()->eq('share_type', $qb->createNamedParameter(IShare::TYPE_EMAIL))
 			);
 
-		/**
-		 * Reshares for this user are shares where they are the owner.
-		 */
-		if ($reshares === false) {
-			$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
-		} else {
-			$qb->andWhere(
-				$qb->expr()->orX(
-					$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
-					$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
-				)
-			);
+		if ($userId !== null) {
+			/**
+			 * Reshares for this user are shares where they are the owner.
+			 */
+			if ($reshares !== true) {
+				$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
+			} else {
+				$qb->andWhere(
+					$qb->expr()->orX(
+						$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
+						$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
+					)
+				);
+			}
 		}
 
 		$qb->innerJoin('s', 'filecache', 'f', $qb->expr()->eq('s.file_source', 'f.fileid'));

diff --git a/lib/composer/composer/autoload_classmap.php b/lib/composer/composer/autoload_classmap.php
@@ -777,6 +777,7 @@
     'OCP\\Share\\IShareHelper' => $baseDir . '/lib/public/Share/IShareHelper.php',
     'OCP\\Share\\IShareProvider' => $baseDir . '/lib/public/Share/IShareProvider.php',
     'OCP\\Share\\IShareProviderSupportsAccept' => $baseDir . '/lib/public/Share/IShareProviderSupportsAccept.php',
+    'OCP\\Share\\IShareProviderSupportsAllSharesInFolder' => $baseDir . '/lib/public/Share/IShareProviderSupportsAllSharesInFolder.php',
     'OCP\\Share\\IShareProviderWithNotification' => $baseDir . '/lib/public/Share/IShareProviderWithNotification.php',
     'OCP\\Share_Backend' => $baseDir . '/lib/public/Share_Backend.php',
     'OCP\\Share_Backend_Collection' => $baseDir . '/lib/public/Share_Backend_Collection.php',

diff --git a/lib/composer/composer/autoload_static.php b/lib/composer/composer/autoload_static.php
@@ -826,6 +826,7 @@ class ComposerStaticInit749170dad3f5e7f9ca158f5a9f04f6a2
         'OCP\\Share\\IShareHelper' => __DIR__ . '/../../..' . '/lib/public/Share/IShareHelper.php',
         'OCP\\Share\\IShareProvider' => __DIR__ . '/../../..' . '/lib/public/Share/IShareProvider.php',
         'OCP\\Share\\IShareProviderSupportsAccept' => __DIR__ . '/../../..' . '/lib/public/Share/IShareProviderSupportsAccept.php',
+        'OCP\\Share\\IShareProviderSupportsAllSharesInFolder' => __DIR__ . '/../../..' . '/lib/public/Share/IShareProviderSupportsAllSharesInFolder.php',
         'OCP\\Share\\IShareProviderWithNotification' => __DIR__ . '/../../..' . '/lib/public/Share/IShareProviderWithNotification.php',
         'OCP\\Share_Backend' => __DIR__ . '/../../..' . '/lib/public/Share_Backend.php',
         'OCP\\Share_Backend_Collection' => __DIR__ . '/../../..' . '/lib/public/Share_Backend_Collection.php',

diff --git a/lib/private/Share20/DefaultShareProvider.php b/lib/private/Share20/DefaultShareProvider.php
@@ -5,6 +5,7 @@
  * SPDX-FileCopyrightText: 2016 ownCloud, Inc.
  * SPDX-License-Identifier: AGPL-3.0-only
  */
+
 namespace OC\Share20;
 
 use OC\Files\Cache\Cache;
@@ -31,6 +32,7 @@
 use OCP\Share\IManager;
 use OCP\Share\IShare;
 use OCP\Share\IShareProviderSupportsAccept;
+use OCP\Share\IShareProviderSupportsAllSharesInFolder;
 use OCP\Share\IShareProviderWithNotification;
 use Psr\Log\LoggerInterface;
 use function str_starts_with;
@@ -40,7 +42,7 @@
  *
  * @package OC\Share20
  */
-class DefaultShareProvider implements IShareProviderWithNotification, IShareProviderSupportsAccept {
+class DefaultShareProvider implements IShareProviderWithNotification, IShareProviderSupportsAccept, IShareProviderSupportsAllSharesInFolder {
 	// Special share type for user modified group shares
 	public const SHARE_TYPE_USERGROUP = 2;
 
@@ -603,6 +605,17 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 			throw new \Exception('non-shallow getSharesInFolder is no longer supported');
 		}
 
+		return $this->getSharesInFolderInternal($userId, $node, $reshares);
+	}
+
+	public function getAllSharesInFolder(Folder $node): array {
+		return $this->getSharesInFolderInternal(null, $node, null);
+	}
+
+	/**
+	 * @return array<int, list<IShare>>
+	 */
+	private function getSharesInFolderInternal(?string $userId, Folder $node, ?bool $reshares): array {
 		$qb = $this->dbConn->getQueryBuilder();
 		$qb->select('s.*',
 			'f.fileid', 'f.path', 'f.permissions AS f_permissions', 'f.storage', 'f.path_hash',
@@ -613,18 +626,20 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 
 		$qb->andWhere($qb->expr()->in('share_type', $qb->createNamedParameter([IShare::TYPE_USER, IShare::TYPE_GROUP, IShare::TYPE_LINK], IQueryBuilder::PARAM_INT_ARRAY)));
 
-		/**
-		 * Reshares for this user are shares where they are the owner.
-		 */
-		if ($reshares === false) {
-			$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
-		} else {
-			$qb->andWhere(
-				$qb->expr()->orX(
-					$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
-					$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
-				)
-			);
+		if ($userId !== null) {
+			/**
+			 * Reshares for this user are shares where they are the owner.
+			 */
+			if ($reshares !== true) {
+				$qb->andWhere($qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId)));
+			} else {
+				$qb->andWhere(
+					$qb->expr()->orX(
+						$qb->expr()->eq('uid_owner', $qb->createNamedParameter($userId)),
+						$qb->expr()->eq('uid_initiator', $qb->createNamedParameter($userId))
+					)
+				);
+			}
 		}
 
 		// todo? maybe get these from the oc_mounts table
@@ -656,7 +671,6 @@ public function getSharesInFolder($userId, Folder $node, $reshares, $shallow = t
 
 		foreach ($chunks as $chunk) {
 			$qb->setParameter('chunk', $chunk, IQueryBuilder::PARAM_INT_ARRAY);
-			$a = $qb->getSQL();
 			$cursor = $qb->executeQuery();
 			while ($data = $cursor->fetch()) {
 				$shares[$data['fileid']][] = $this->createShare($data);

diff --git a/lib/private/Share20/Manager.php b/lib/private/Share20/Manager.php
@@ -51,6 +51,7 @@
 use OCP\Share\IShare;
 use OCP\Share\IShareProvider;
 use OCP\Share\IShareProviderSupportsAccept;
+use OCP\Share\IShareProviderSupportsAllSharesInFolder;
 use OCP\Share\IShareProviderWithNotification;
 use Psr\Log\LoggerInterface;
 
@@ -1213,11 +1214,13 @@ public function getSharesInFolder($userId, Folder $node, $reshares = false, $sha
 		$shares = [];
 		foreach ($providers as $provider) {
 			if ($isOwnerless) {
-				foreach ($node->getDirectoryListing() as $childNode) {
-					$data = $provider->getSharesByPath($childNode);
-					$fid = $childNode->getId();
-					$shares[$fid] ??= [];
-					$shares[$fid] = array_merge($shares[$fid], $data);
+				// If the provider does not implement the additional interface,
+				// we lack a performant way of querying all shares and therefore ignore the provider.
+				if ($provider instanceof IShareProviderSupportsAllSharesInFolder) {
+					foreach ($provider->getAllSharesInFolder($node) as $fid => $data) {
+						$shares[$fid] ??= [];
+						$shares[$fid] = array_merge($shares[$fid], $data);
+					}
 				}
 			} else {
 				foreach ($provider->getSharesInFolder($userId, $node, $reshares) as $fid => $data) {

diff --git a/lib/public/Share/IShareProviderSupportsAllSharesInFolder.php b/lib/public/Share/IShareProviderSupportsAllSharesInFolder.php
@@ -0,0 +1,24 @@
+<?php
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCP\Share;
+
+use OCP\Files\Folder;
+
+/**
+ * Allows defining a IShareProvider with support for the getAllSharesInFolder method.
+ *
+ * @since 31.0.6
+ */
+interface IShareProviderSupportsAllSharesInFolder extends IShareProvider {
+	/**
+	 * Get all shares in a folder.
+	 *
+	 * @return array<int, list<IShare>>
+	 * @since 31.0.6
+	 */
+	public function getAllSharesInFolder(Folder $node): array;
+}
diff --git a/tests/lib/Share20/ManagerTest.php b/tests/lib/Share20/ManagerTest.php
@@ -55,6 +55,7 @@
 use OCP\Share\IProviderFactory;
 use OCP\Share\IShare;
 use OCP\Share\IShareProvider;
+use OCP\Share\IShareProviderSupportsAllSharesInFolder;
 use PHPUnit\Framework\MockObject\MockBuilder;
 use PHPUnit\Framework\MockObject\MockObject;
 use Psr\Log\LoggerInterface;
@@ -4552,36 +4553,28 @@ public function testGetSharesInFolderOwnerless(): void {
 		$manager = $this->createManager($factory);
 
 		$factory->setProvider($this->defaultProvider);
-		$extraProvider = $this->createMock(IShareProvider::class);
+		$extraProvider = $this->createMock(IShareProviderSupportsAllSharesInFolder::class);
 		$factory->setSecondProvider($extraProvider);
 
 		$share1 = $this->createMock(IShare::class);
 		$share2 = $this->createMock(IShare::class);
 
 		$mount = $this->createMock(IShareOwnerlessMount::class);
 
-		$file = $this->createMock(File::class);
-		$file
-			->method('getId')
-			->willReturn(1);
-
 		$folder = $this->createMock(Folder::class);
 		$folder
 			->method('getMountPoint')
 			->willReturn($mount);
-		$folder
-			->method('getDirectoryListing')
-			->willReturn([$file]);
 
 		$this->defaultProvider
-			->method('getSharesByPath')
-			->with($file)
-			->willReturn([$share1]);
+			->method('getAllSharesInFolder')
+			->with($folder)
+			->willReturn([1 => [$share1]]);
 
 		$extraProvider
-			->method('getSharesByPath')
-			->with($file)
-			->willReturn([$share2]);
+			->method('getAllSharesInFolder')
+			->with($folder)
+			->willReturn([1 => [$share2]]);
 
 		$this->assertSame([
 			1 => [$share1, $share2],