1 files changed, 68 insertions, 0 deletions
diff --git a/apps/dav/lib/Upload/UploadAutoMkcolPlugin.php b/apps/dav/lib/Upload/UploadAutoMkcolPlugin.php
new file mode 100644
index 00000000000..a7030ba1133
--- /dev/null
+++ b/apps/dav/lib/Upload/UploadAutoMkcolPlugin.php
@@ -0,0 +1,68 @@
+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2025 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+namespace OCA\DAV\Upload;
+
+use Sabre\DAV\Exception\NotFound;
+use Sabre\DAV\ICollection;
+use Sabre\DAV\Server;
+use Sabre\DAV\ServerPlugin;
+use Sabre\HTTP\RequestInterface;
+use Sabre\HTTP\ResponseInterface;
+use function Sabre\Uri\split as uriSplit;
+
+/**
+ * Class that allows automatically creating non-existing collections on file
+ * upload.
+ *
+ * Since this functionality is not WebDAV compliant, it needs a special
+ * header to be activated.
+ */
+class UploadAutoMkcolPlugin extends ServerPlugin {
+
+	private Server $server;
+
+	public function initialize(Server $server): void {
+		$server->on('beforeMethod:PUT', [$this, 'beforeMethod']);
+		$this->server = $server;
+	}
+
+	/**
+	 * @throws NotFound a node  expected to exist cannot be found
+	 */
+	public function beforeMethod(RequestInterface $request, ResponseInterface $response): bool {
+		if ($request->getHeader('X-NC-WebDAV-Auto-Mkcol') !== '1') {
+			return true;
+		}
+
+		[$path,] = uriSplit($request->getPath());
+
+		if ($this->server->tree->nodeExists($path)) {
+			return true;
+		}
+
+		$parts = explode('/', trim($path, '/'));
+		$rootPath = array_shift($parts);
+		$node = $this->server->tree->getNodeForPath('/' . $rootPath);
+
+		if (!($node instanceof ICollection)) {
+			// the root node is not a collection, let SabreDAV handle it
+			return true;
+		}
+
+		foreach ($parts as $part) {
+			if (!$node->childExists($part)) {
+				$node->createDirectory($part);
+			}
+
+			$node = $node->getChild($part);
+		}
+
+		return true;
+	}
+}