Keep versions when deleting as recipient

The original owner could not be resolved because the original file was
already deleted, so no versions were retained.

This fix passes the owner and path to retainVersions() since it was
already resolved before the file deletion. This reactivates the versions
logic and creates a copy of the versions in each trashbin.

apps/files_trashbin/lib/trashbin.php

@@ -175,6 +175,10 @@ class Trashbin {
 		}
 
 		self::setUpTrash($user);
+		if ($owner !== $user) {
+			// also setup for owner
+			self::setUpTrash($owner);
+		}
 
 		$path_parts = pathinfo($file_path);
 
@@ -222,7 +226,7 @@ class Trashbin {
 			\OCP\Util::emitHook('\OCA\Files_Trashbin\Trashbin', 'post_moveToTrash', array('filePath' => \OC\Files\Filesystem::normalizePath($file_path),
 				'trashPath' => \OC\Files\Filesystem::normalizePath($filename . '.d' . $timestamp)));
 
-			$size += self::retainVersions($file_path, $filename, $timestamp);
+			$size += self::retainVersions($file_path, $filename, $owner, $ownerPath, $timestamp);
 
 			// if owner !== user we need to also add a copy to the owners trash
 			if ($user !== $owner) {
@@ -248,23 +252,19 @@ class Trashbin {
 	 *
 	 * @param string $file_path path to original file
 	 * @param string $filename of deleted file
+	 * @param string $owner owner user id
+	 * @param string $ownerPath path relative to the owner's home storage
 	 * @param integer $timestamp when the file was deleted
 	 *
 	 * @return int size of stored versions
 	 */
-	private static function retainVersions($file_path, $filename, $timestamp) {
+	private static function retainVersions($file_path, $filename, $owner, $ownerPath, $timestamp) {
 		$size = 0;
-		if (\OCP\App::isEnabled('files_versions')) {
+		if (\OCP\App::isEnabled('files_versions') && !empty($ownerPath)) {
 
 			$user = \OCP\User::getUser();
 			$rootView = new \OC\Files\View('/');
 
-			list($owner, $ownerPath) = self::getUidAndFilename($file_path);
-			// file has been deleted in between
-			if (empty($ownerPath)) {
-				return 0;
-			}
-
 			if ($rootView->is_dir($owner . '/files_versions/' . $ownerPath)) {
 				$size += self::calculateSize(new \OC\Files\View('/' . $owner . '/files_versions/' . $ownerPath));
 				if ($owner !== $user) {

apps/files_trashbin/tests/storage.php

@@ -192,6 +192,10 @@ class Storage extends \Test\TestCase {
 		$this->assertEquals(1, count($results));
 		$name = $results[0]->getName();
 		$this->assertEquals('test.txt.v', substr($name, 0, strlen('test.txt.v')));
+
+		// versions deleted
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_versions/');
+		$this->assertEquals(0, count($results));
 	}
 
 	/**
@@ -223,6 +227,118 @@ class Storage extends \Test\TestCase {
 		$this->assertEquals(1, count($results));
 		$name = $results[0]->getName();
 		$this->assertEquals('inside.txt.v', substr($name, 0, strlen('inside.txt.v')));
+
+		// versions deleted
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_versions/folder/');
+		$this->assertEquals(0, count($results));
+	}
+
+	/**
+	 * Test that deleted versions properly land in the trashbin when deleting as share recipient.
+	 */
+	public function testDeleteVersionsOfFileAsRecipient() {
+		\OCA\Files_Versions\Hooks::connectHooks();
+
+		$this->userView->mkdir('share');
+		// trigger a version (multiple would not work because of the expire logic)
+		$this->userView->file_put_contents('share/test.txt', 'v1');
+		$this->userView->file_put_contents('share/test.txt', 'v2');
+
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_versions/share/');
+		$this->assertEquals(1, count($results));
+
+		$recipientUser = $this->getUniqueId('recipient_');
+		\OC::$server->getUserManager()->createUser($recipientUser, $recipientUser);
+
+		$fileinfo = $this->userView->getFileInfo('share');
+		$this->assertTrue(\OCP\Share::shareItem('folder', $fileinfo['fileid'], \OCP\Share::SHARE_TYPE_USER,
+				$recipientUser, 31));
+
+		$this->loginAsUser($recipientUser);
+
+		// delete as recipient
+		$recipientView = new \OC\Files\View('/' . $recipientUser . '/files');
+		$recipientView->unlink('share/test.txt');
+
+		// rescan trash storage for both users
+		list($rootStorage,) = $this->rootView->resolvePath($this->user . '/files_trashbin');
+		$rootStorage->getScanner()->scan('');
+
+		// check if versions are in trashbin for both users
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_trashbin/versions');
+		$this->assertEquals(1, count($results), 'Versions in owner\'s trashbin');
+		$name = $results[0]->getName();
+		$this->assertEquals('test.txt.v', substr($name, 0, strlen('test.txt.v')));
+
+		$results = $this->rootView->getDirectoryContent($recipientUser . '/files_trashbin/versions');
+		$this->assertEquals(1, count($results), 'Versions in recipient\'s trashbin');
+		$name = $results[0]->getName();
+		$this->assertEquals('test.txt.v', substr($name, 0, strlen('test.txt.v')));
+
+		// versions deleted
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_versions/share/');
+		$this->assertEquals(0, count($results));
+	}
+
+	/**
+	 * Test that deleted versions properly land in the trashbin when deleting as share recipient.
+	 */
+	public function testDeleteVersionsOfFolderAsRecipient() {
+		\OCA\Files_Versions\Hooks::connectHooks();
+
+		$this->userView->mkdir('share');
+		$this->userView->mkdir('share/folder');
+		// trigger a version (multiple would not work because of the expire logic)
+		$this->userView->file_put_contents('share/folder/test.txt', 'v1');
+		$this->userView->file_put_contents('share/folder/test.txt', 'v2');
+
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_versions/share/folder/');
+		$this->assertEquals(1, count($results));
+
+		$recipientUser = $this->getUniqueId('recipient_');
+		\OC::$server->getUserManager()->createUser($recipientUser, $recipientUser);
+
+		$fileinfo = $this->userView->getFileInfo('share');
+		$this->assertTrue(\OCP\Share::shareItem('folder', $fileinfo['fileid'], \OCP\Share::SHARE_TYPE_USER,
+				$recipientUser, 31));
+
+		$this->loginAsUser($recipientUser);
+
+		// delete as recipient
+		$recipientView = new \OC\Files\View('/' . $recipientUser . '/files');
+		$recipientView->rmdir('share/folder');
+
+		// rescan trash storage
+		list($rootStorage,) = $this->rootView->resolvePath($this->user . '/files_trashbin');
+		$rootStorage->getScanner()->scan('');
+
+		// check if versions are in trashbin for owner
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_trashbin/versions');
+		$this->assertEquals(1, count($results));
+		$name = $results[0]->getName();
+		$this->assertEquals('folder.d', substr($name, 0, strlen('folder.d')));
+
+		// check if file versions are in trashbin for owner
+		$results = $this->rootView->getDirectoryContent($this->user . '/files_trashbin/versions/' . $name . '/');
+		$this->assertEquals(1, count($results));
+		$name = $results[0]->getName();
+		$this->assertEquals('test.txt.v', substr($name, 0, strlen('test.txt.v')));
+
+		// check if versions are in trashbin for recipient
+		$results = $this->rootView->getDirectoryContent($recipientUser . '/files_trashbin/versions');
+		$this->assertEquals(1, count($results));
+		$name = $results[0]->getName();
+		$this->assertEquals('folder.d', substr($name, 0, strlen('folder.d')));
+
+		// check if file versions are in trashbin for recipient
+		$results = $this->rootView->getDirectoryContent($recipientUser . '/files_trashbin/versions/' . $name . '/');
+		$this->assertEquals(1, count($results));
+		$name = $results[0]->getName();
+		$this->assertEquals('test.txt.v', substr($name, 0, strlen('test.txt.v')));
+
+		// versions deleted
+		$results = $this->rootView->getDirectoryContent($recipientUser . '/files_versions/share/folder/');
+		$this->assertEquals(0, count($results));
 	}
 
 	/**