feature(dav/bulk): Add symlink upload to BulkUploadPlugin

Author: taminob

apps/dav/lib/BulkUpload/BulkUploadPlugin.php

@@ -23,7 +23,9 @@
 
 namespace OCA\DAV\BulkUpload;
 
+use Exception;
 use Psr\Log\LoggerInterface;
+use Sabre\DAV\Exception\Forbidden;
 use Sabre\DAV\Server;
 use Sabre\DAV\ServerPlugin;
 use Sabre\HTTP\RequestInterface;
@@ -37,6 +39,13 @@ class BulkUploadPlugin extends ServerPlugin {
 	private Folder $userFolder;
 	private LoggerInterface $logger;
 
+	/**
+	 * Reference to main server object
+	 *
+	 * @var Server
+	 */
+	private $server;
+
 	public function __construct(
 		Folder $userFolder,
 		LoggerInterface $logger
@@ -49,6 +58,7 @@ public function __construct(
 	 * Register listener on POST requests with the httpPost method.
 	 */
 	public function initialize(Server $server): void {
+		$this->server = $server;
 		$server->on('method:POST', [$this, 'httpPost'], 10);
 	}
 
@@ -89,6 +99,26 @@ public function httpPost(RequestInterface $request, ResponseInterface $response)
 					$mtime = null;
 				}
 
+				if ($request->getHeader('OC-File-Type') == 1) {
+					// TODO: store default value in global location
+					$allowSymlinks = \OC::$server->get(\OC\AllConfig::class)->getSystemValueBool(
+						'localstorage.allowsymlinks', false);
+					if (!$allowSymlinks) {
+						throw new Forbidden("Server does not allow the creation of symlinks!");
+					}
+					$symlinkPath = $headers['x-file-path'];
+					$parentNode = $this->server->tree->getNodeForPath(dirname($symlinkPath));
+					if(!$parentNode instanceof \OCA\DAV\Connector\Sabre\Directory) {
+						throw new Exception("Unable to upload '$symlinkPath' because the remote directory does not support symlink creation!");
+					}
+					$etag = $parentNode->createSymlink(basename($symlinkPath), $content);
+					$writtenFiles[$headers['x-file-path']] = [
+						"error" => false,
+						"etag" => $etag,
+					];
+					continue;
+				}
+
 				$node = $this->userFolder->newFile($headers['x-file-path'], $content);
 				$node->touch($mtime);
 				$node = $this->userFolder->getById($node->getId())[0];