fix(webdav): support blank-password nextcloud shares

CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 
 ### Fixed
 - Changelog CI now enforces curated user-facing entries and uses them for nightly and stable release notes.
+- WebDAV shares that use a username with no password now connect and open folders correctly.
 
 ### Added
 - FTP connections can now enable explicit SSL with the AUTH SSL command.

src/portkeydrop/protocols.py

@@ -447,6 +447,8 @@ def connect(self) -> None:
                     "webdav_timeout": self._info.timeout,
                 }
             )
+            if self._info.username:
+                self._client.session.auth = (self._info.username, self._info.password)
             self._cwd = "/"
             self._connected = True
         except ImportError as e:
@@ -538,14 +540,14 @@ def _parse_modified(value: object) -> datetime | None:
             return None
 
     @staticmethod
-    def _is_dir_info(info: dict) -> bool:
+    def _is_dir_info(info: dict, fallback_path: str = "") -> bool:
         for key in ("isdir", "is_dir", "directory"):
             value = info.get(key)
             if isinstance(value, bool):
                 return value
             if isinstance(value, str) and value.lower() in {"true", "1", "yes", "dir", "directory"}:
                 return True
-        path = str(info.get("path") or info.get("href") or info.get("name") or "")
+        path = str(info.get("path") or info.get("href") or info.get("name") or fallback_path)
         content_type = str(info.get("content_type") or info.get("content-type") or "").lower()
         return path.endswith("/") or content_type == "httpd/unix-directory"
 
@@ -554,7 +556,7 @@ def _remote_file_from_info(self, info: dict, fallback_path: str = "") -> RemoteF
         name = str(
             info.get("name") or PurePosixPath(path.rstrip("/")).name or path.strip("/") or "/"
         )
-        is_dir = self._is_dir_info(info)
+        is_dir = self._is_dir_info(info, fallback_path=fallback_path)
         try:
             size = 0 if is_dir else int(info.get("size") or info.get("content_length") or 0)
         except (TypeError, ValueError):

tests/test_protocols.py

@@ -272,6 +272,23 @@ def test_connect_builds_webdavclient_options(self, monkeypatch):
         assert client.connected
         assert client.cwd == "/"
 
+    def test_connect_sets_session_auth_for_blank_webdav_password(self, monkeypatch):
+        webdav = MagicMock()
+        webdav.list.return_value = []
+        client_class = self._install_fake_webdav(monkeypatch, webdav)
+        info = ConnectionInfo(
+            protocol=Protocol.WEBDAV,
+            host="dav.example.com",
+            username="share-token",
+            password="",
+        )
+
+        client = WebDAVClient(info)
+        client.connect()
+
+        client_class.assert_called_once()
+        assert webdav.session.auth == ("share-token", "")
+
     def test_connect_preserves_explicit_webdav_url_and_port(self, monkeypatch):
         webdav = MagicMock()
         webdav.list.return_value = []
@@ -403,6 +420,24 @@ def test_chdir_requires_existing_directory(self, monkeypatch):
         assert client.chdir("docs") == "/docs/"
         assert client.cwd == "/docs/"
 
+    def test_chdir_treats_trailing_slash_fallback_path_as_webdav_directory(self, monkeypatch):
+        webdav = MagicMock()
+        webdav.list.return_value = []
+        webdav.info.return_value = {
+            "created": None,
+            "name": None,
+            "size": None,
+            "modified": "Thu, 18 Sep 2025 17:39:08 GMT",
+            "etag": '"68cc43bcc684e"',
+            "content_type": None,
+        }
+        self._install_fake_webdav(monkeypatch, webdav)
+        client = WebDAVClient(ConnectionInfo(protocol=Protocol.WEBDAV, host="dav.example.com"))
+        client.connect()
+
+        assert client.chdir("/11 ai/") == "/11 ai/"
+        assert client.cwd == "/11 ai/"
+
     def test_file_operations_delegate_to_webdavclient(self, monkeypatch, tmp_path):
         webdav = MagicMock()
         webdav.list.return_value = []