Exit early if $storage is falsy in View::getDirectoryContent

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

1 files changed, 94 insertions, 96 deletions

diff --git a/lib/private/Files/View.php b/lib/private/Files/View.php
index 4a9c6fd3bcb..8f3a108bc2c 100644
--- a/lib/private/Files/View.php
+++ b/lib/private/Files/View.php
@@ -1436,124 +1436,122 @@ class View {
 		if (!Filesystem::isValidPath($directory)) {
 			return [];
 		}
+
 		$path = $this->getAbsolutePath($directory);
 		$path = Filesystem::normalizePath($path);
 		$mount = $this->getMount($directory);
-		if (!$mount) {
-			return [];
-		}
 		$storage = $mount->getStorage();
 		$internalPath = $mount->getInternalPath($path);
-		if ($storage) {
-			$cache = $storage->getCache($internalPath);
-			$user = \OC_User::getUser();
+		if (!$storage) {
+			return [];
+		}
 
-			$data = $this->getCacheEntry($storage, $internalPath, $directory);
+		$cache = $storage->getCache($internalPath);
+		$user = \OC_User::getUser();
 
-			if (!$data instanceof ICacheEntry || !isset($data['fileid']) || !($data->getPermissions() & Constants::PERMISSION_READ)) {
-				return [];
-			}
+		$data = $this->getCacheEntry($storage, $internalPath, $directory);
 
-			$folderId = $data['fileid'];
-			$contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
+		if (!$data instanceof ICacheEntry || !isset($data['fileid']) || !($data->getPermissions() & Constants::PERMISSION_READ)) {
+			return [];
+		}
 
-			$sharingDisabled = \OCP\Util::isSharingDisabledForUser();
+		$folderId = $data['fileid'];
+		$contents = $cache->getFolderContentsById($folderId); //TODO: mimetype_filter
 
-			$fileNames = array_map(function (ICacheEntry $content) {
-				return $content->getName();
-			}, $contents);
-			/**
-			 * @var \OC\Files\FileInfo[] $fileInfos
-			 */
-			$fileInfos = array_map(function (ICacheEntry $content) use ($path, $storage, $mount, $sharingDisabled) {
-				if ($sharingDisabled) {
-					$content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
-				}
-				$owner = $this->getUserObjectForOwner($storage->getOwner($content['path']));
-				return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
-			}, $contents);
-			$files = array_combine($fileNames, $fileInfos);
-
-			//add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
-			$mounts = Filesystem::getMountManager()->findIn($path);
-			$dirLength = strlen($path);
-			foreach ($mounts as $mount) {
-				$mountPoint = $mount->getMountPoint();
-				$subStorage = $mount->getStorage();
-				if ($subStorage) {
-					$subCache = $subStorage->getCache('');
+		$sharingDisabled = \OCP\Util::isSharingDisabledForUser();
 
-					$rootEntry = $subCache->get('');
-					if (!$rootEntry) {
-						$subScanner = $subStorage->getScanner();
-						try {
-							$subScanner->scanFile('');
-						} catch (\OCP\Files\StorageNotAvailableException $e) {
-							continue;
-						} catch (\OCP\Files\StorageInvalidException $e) {
-							continue;
-						} catch (\Exception $e) {
-							// sometimes when the storage is not available it can be any exception
-							\OC::$server->getLogger()->logException($e, [
-								'message' => 'Exception while scanning storage "' . $subStorage->getId() . '"',
-								'level' => ILogger::ERROR,
-								'app' => 'lib',
-							]);
-							continue;
-						}
-						$rootEntry = $subCache->get('');
+		$fileNames = array_map(function (ICacheEntry $content) {
+			return $content->getName();
+		}, $contents);
+		/**
+			* @var \OC\Files\FileInfo[] $fileInfos
+			*/
+		$fileInfos = array_map(function (ICacheEntry $content) use ($path, $storage, $mount, $sharingDisabled) {
+			if ($sharingDisabled) {
+				$content['permissions'] = $content['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
+			}
+			$owner = $this->getUserObjectForOwner($storage->getOwner($content['path']));
+			return new FileInfo($path . '/' . $content['name'], $storage, $content['path'], $content, $mount, $owner);
+		}, $contents);
+		$files = array_combine($fileNames, $fileInfos);
+
+		//add a folder for any mountpoint in this directory and add the sizes of other mountpoints to the folders
+		$mounts = Filesystem::getMountManager()->findIn($path);
+		$dirLength = strlen($path);
+		foreach ($mounts as $mount) {
+			$mountPoint = $mount->getMountPoint();
+			$subStorage = $mount->getStorage();
+			if ($subStorage) {
+				$subCache = $subStorage->getCache('');
+
+				$rootEntry = $subCache->get('');
+				if (!$rootEntry) {
+					$subScanner = $subStorage->getScanner();
+					try {
+						$subScanner->scanFile('');
+					} catch (\OCP\Files\StorageNotAvailableException $e) {
+						continue;
+					} catch (\OCP\Files\StorageInvalidException $e) {
+						continue;
+					} catch (\Exception $e) {
+						// sometimes when the storage is not available it can be any exception
+						\OC::$server->getLogger()->logException($e, [
+							'message' => 'Exception while scanning storage "' . $subStorage->getId() . '"',
+							'level' => ILogger::ERROR,
+							'app' => 'lib',
+						]);
+						continue;
 					}
+					$rootEntry = $subCache->get('');
+				}
 
-					if ($rootEntry && ($rootEntry->getPermissions() & Constants::PERMISSION_READ)) {
-						$relativePath = trim(substr($mountPoint, $dirLength), '/');
-						if ($pos = strpos($relativePath, '/')) {
-							//mountpoint inside subfolder add size to the correct folder
-							$entryName = substr($relativePath, 0, $pos);
-							foreach ($files as &$entry) {
-								if ($entry->getName() === $entryName) {
-									$entry->addSubEntry($rootEntry, $mountPoint);
-								}
+				if ($rootEntry && ($rootEntry->getPermissions() & Constants::PERMISSION_READ)) {
+					$relativePath = trim(substr($mountPoint, $dirLength), '/');
+					if ($pos = strpos($relativePath, '/')) {
+						//mountpoint inside subfolder add size to the correct folder
+						$entryName = substr($relativePath, 0, $pos);
+						foreach ($files as &$entry) {
+							if ($entry->getName() === $entryName) {
+								$entry->addSubEntry($rootEntry, $mountPoint);
 							}
-						} else { //mountpoint in this folder, add an entry for it
-							$rootEntry['name'] = $relativePath;
-							$rootEntry['type'] = $rootEntry['mimetype'] === 'httpd/unix-directory' ? 'dir' : 'file';
-							$permissions = $rootEntry['permissions'];
-							// do not allow renaming/deleting the mount point if they are not shared files/folders
-							// for shared files/folders we use the permissions given by the owner
-							if ($mount instanceof MoveableMount) {
-								$rootEntry['permissions'] = $permissions | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
-							} else {
-								$rootEntry['permissions'] = $permissions & (\OCP\Constants::PERMISSION_ALL - (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE));
-							}
-
-							$rootEntry['path'] = substr(Filesystem::normalizePath($path . '/' . $rootEntry['name']), strlen($user) + 2); // full path without /$user/
+						}
+					} else { //mountpoint in this folder, add an entry for it
+						$rootEntry['name'] = $relativePath;
+						$rootEntry['type'] = $rootEntry['mimetype'] === 'httpd/unix-directory' ? 'dir' : 'file';
+						$permissions = $rootEntry['permissions'];
+						// do not allow renaming/deleting the mount point if they are not shared files/folders
+						// for shared files/folders we use the permissions given by the owner
+						if ($mount instanceof MoveableMount) {
+							$rootEntry['permissions'] = $permissions | \OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE;
+						} else {
+							$rootEntry['permissions'] = $permissions & (\OCP\Constants::PERMISSION_ALL - (\OCP\Constants::PERMISSION_UPDATE | \OCP\Constants::PERMISSION_DELETE));
+						}
 
-							// if sharing was disabled for the user we remove the share permissions
-							if (\OCP\Util::isSharingDisabledForUser()) {
-								$rootEntry['permissions'] = $rootEntry['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
-							}
+						$rootEntry['path'] = substr(Filesystem::normalizePath($path . '/' . $rootEntry['name']), strlen($user) + 2); // full path without /$user/
 
-							$owner = $this->getUserObjectForOwner($subStorage->getOwner(''));
-							$files[$rootEntry->getName()] = new FileInfo($path . '/' . $rootEntry['name'], $subStorage, '', $rootEntry, $mount, $owner);
+						// if sharing was disabled for the user we remove the share permissions
+						if (\OCP\Util::isSharingDisabledForUser()) {
+							$rootEntry['permissions'] = $rootEntry['permissions'] & ~\OCP\Constants::PERMISSION_SHARE;
 						}
-					}
-				}
-			}
 
-			if ($mimetype_filter) {
-				$files = array_filter($files, function (FileInfo $file) use ($mimetype_filter) {
-					if (strpos($mimetype_filter, '/')) {
-						return $file->getMimetype() === $mimetype_filter;
-					} else {
-						return $file->getMimePart() === $mimetype_filter;
+						$owner = $this->getUserObjectForOwner($subStorage->getOwner(''));
+						$files[$rootEntry->getName()] = new FileInfo($path . '/' . $rootEntry['name'], $subStorage, '', $rootEntry, $mount, $owner);
 					}
-				});
+				}
 			}
+		}
 
-			return array_values($files);
-		} else {
-			return [];
+		if ($mimetype_filter) {
+			$files = array_filter($files, function (FileInfo $file) use ($mimetype_filter) {
+				if (strpos($mimetype_filter, '/')) {
+					return $file->getMimetype() === $mimetype_filter;
+				} else {
+					return $file->getMimePart() === $mimetype_filter;
+				}
+			});
 		}
+
+		return array_values($files);
 	}
 
 	/**