Make sure that the dav propfind plugins always use the proper user id

For old android versions it could happen that the requests are performed
with a login name instead of the actual user id, so before this change
the property methods used the wrong value for fetching their information

Signed-off-by: Julius Härtl <jus@bitgrid.net>

apps/dav/lib/Connector/Sabre/FilesPlugin.php

@@ -40,6 +40,7 @@ use OCP\Files\StorageNotAvailableException;
 use OCP\IConfig;
 use OCP\IPreview;
 use OCP\IRequest;
+use OCP\IUserSession;
 use Sabre\DAV\Exception\Forbidden;
 use Sabre\DAV\Exception\NotFound;
 use Sabre\DAV\IFile;
@@ -88,6 +89,11 @@ class FilesPlugin extends ServerPlugin {
 	 */
 	private $tree;
 
+	/**
+	 * @var IUserSession
+	 */
+	private $userSession;
+
 	/**
 	 * Whether this is public webdav.
 	 * If true, some returned information will be stripped off.
@@ -128,11 +134,13 @@ class FilesPlugin extends ServerPlugin {
 								IConfig $config,
 								IRequest $request,
 								IPreview $previewManager,
+								IUserSession $userSession,
 								$isPublic = false,
 								$downloadAttachment = true) {
 		$this->tree = $tree;
 		$this->config = $config;
 		$this->request = $request;
+		$this->userSession = $userSession;
 		$this->isPublic = $isPublic;
 		$this->downloadAttachment = $downloadAttachment;
 		$this->previewManager = $previewManager;
@@ -322,14 +330,22 @@ class FilesPlugin extends ServerPlugin {
 			});
 
 			$propFind->handle(self::SHARE_PERMISSIONS_PROPERTYNAME, function () use ($node, $httpRequest) {
+				$user = $this->userSession->getUser();
+				if ($user === null) {
+					return null;
+				}
 				return $node->getSharePermissions(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
+					$user->getUID()
 				);
 			});
 
 			$propFind->handle(self::OCM_SHARE_PERMISSIONS_PROPERTYNAME, function () use ($node, $httpRequest) {
+				$user = $this->userSession->getUser();
+				if ($user === null) {
+					return null;
+				}
 				$ncPermissions = $node->getSharePermissions(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
+					$user->getUID()
 				);
 				$ocmPermissions = $this->ncPermissions2ocmPermissions($ncPermissions);
 				return json_encode($ocmPermissions);
@@ -367,8 +383,12 @@ class FilesPlugin extends ServerPlugin {
 			});
 
 			$propFind->handle(self::SHARE_NOTE, function () use ($node, $httpRequest) {
+				$user = $this->userSession->getUser();
+				if ($user === null) {
+					return null;
+				}
 				return $node->getNoteFromShare(
-					$httpRequest->getRawServerValue('PHP_AUTH_USER')
+					$user->getUID()
 				);
 			});
 		}

apps/dav/lib/Connector/Sabre/ServerFactory.php

@@ -171,6 +171,7 @@ class ServerFactory {
 					$this->config,
 					$this->request,
 					$this->previewManager,
+					$this->userSession,
 					false,
 					!$this->config->getSystemValue('debug', false)
 				)

apps/dav/lib/Server.php

@@ -238,6 +238,7 @@ class Server {
 						\OC::$server->getConfig(),
 						$this->request,
 						\OC::$server->getPreviewManager(),
+						\OC::$server->getUserSession(),
 						false,
 						!\OC::$server->getConfig()->getSystemValue('debug', false)
 					)

apps/dav/tests/unit/Connector/Sabre/FilesPluginTest.php

@@ -41,6 +41,8 @@ use OCP\Files\StorageNotAvailableException;
 use OCP\IConfig;
 use OCP\IPreview;
 use OCP\IRequest;
+use OCP\IUserSession;
+use PHPUnit\Framework\MockObject\MockObject;
 use Sabre\DAV\PropFind;
 use Sabre\DAV\PropPatch;
 use Sabre\DAV\Server;
@@ -99,30 +101,27 @@ class FilesPluginTest extends TestCase {
 	 */
 	private $previewManager;
 
+	/** @var IUserSession|MockObject */
+	private $userSession;
+
 	protected function setUp(): void {
 		parent::setUp();
-		$this->server = $this->getMockBuilder(Server::class)
-			->disableOriginalConstructor()
-			->getMock();
-		$this->tree = $this->getMockBuilder(Tree::class)
-			->disableOriginalConstructor()
-			->getMock();
+		$this->server = $this->createMock(Server::class);
+		$this->tree = $this->createMock(Tree::class);
 		$this->config = $this->createMock(IConfig::class);
 		$this->config->expects($this->any())->method('getSystemValue')
 			->with($this->equalTo('data-fingerprint'), $this->equalTo(''))
 			->willReturn('my_fingerprint');
-		$this->request = $this->getMockBuilder(IRequest::class)
-			->disableOriginalConstructor()
-			->getMock();
-		$this->previewManager = $this->getMockBuilder(IPreview::class)
-			->disableOriginalConstructor()
-			->getMock();
+		$this->request = $this->createMock(IRequest::class);
+		$this->previewManager = $this->createMock(IPreview::class);
+		$this->userSession = $this->createMock(IUserSession::class);
 
 		$this->plugin = new FilesPlugin(
 			$this->tree,
 			$this->config,
 			$this->request,
-			$this->previewManager
+			$this->previewManager,
+			$this->userSession
 		);
 
 		$response = $this->getMockBuilder(ResponseInterface::class)
@@ -264,6 +263,7 @@ class FilesPluginTest extends TestCase {
 				->disableOriginalConstructor()
 				->getMock(),
 			$this->previewManager,
+			$this->userSession,
 			true);
 		$this->plugin->initialize($this->server);
 

apps/dav/tests/unit/Connector/Sabre/FilesReportPluginTest.php

@@ -406,10 +406,9 @@ class FilesReportPluginTest extends \Test\TestCase {
 			new \OCA\DAV\Connector\Sabre\FilesPlugin(
 				$this->tree,
 				$config,
-				$this->getMockBuilder(IRequest::class)
-					->disableOriginalConstructor()
-					->getMock(),
-				$this->previewManager
+				$this->createMock(IRequest::class),
+				$this->previewManager,
+				$this->createMock(IUserSession::class)
 			)
 		);
 		$this->plugin->initialize($this->server);