Add OnlyOffice-based preview for office documents

Replace Aspose.Words with OnlyOffice Document Server for generating
bitmap previews of office documents (Word, Excel, PowerPoint, etc.).

Backend:
- Add cista/onlyoffice.py conversion client
- Convert office docs directly to PNG via OnlyOffice, then AVIF via pyvips
- Make office previews optional based on OnlyOffice availability
- Remove Aspose.Words dependency and all related code
- Add spreadsheet and presentation format support

Frontend:
- Mark office files as previewable in Document.ts
- Add office extensions to MediaPreview.vue preview list
- Fix pre-existing @ts-ignore in HeaderMain.vue

Tests:
- Fix test_lrucache.py parameter name (open -> opener)

Also run ruff format across the codebase to satisfy linter checks.

cista/auth.py

@@ -319,7 +319,9 @@ def _ntlm_parse_type1(data: bytes) -> dict:
     return {"flags": flags}
 
 
-def _ntlm_build_type2(challenge: bytes, type1_flags: int = 0, target_name: str = "cista") -> bytes:
+def _ntlm_build_type2(
+    challenge: bytes, type1_flags: int = 0, target_name: str = "cista"
+) -> bytes:
     target = target_name.encode("utf-16le")
 
     # AV pairs for TargetInfo: NetBIOS + DNS names, terminated by EOL.
@@ -504,7 +506,9 @@ def _ntlmv2_verify(
             ).digest()
 
             # Expected proof = HMAC_MD5(NTLMv2_hash, challenge + blob)
-            expected_proof = hmac.new(ntlmv2_hash, challenge + blob, hashlib.md5).digest()
+            expected_proof = hmac.new(
+                ntlmv2_hash, challenge + blob, hashlib.md5
+            ).digest()
             if hmac.compare_digest(client_proof, expected_proof):
                 return True
 
@@ -623,9 +627,6 @@ def _basic_auth_login(request):
     return user
 
 
-
-
-
 async def _token_auth_login(request, *, privileged=False):
     """Authenticate via Basic token:<secret> in SSO mode.
 
@@ -720,7 +721,9 @@ async def _ntlm_auth_login(request, *, privileged=False):
         logger.warning("NTLM token missing NTLMSSP marker: client=%s", client_key)
 
     if len(data) < 12:
-        logger.warning("NTLM message too short: client=%s bytes=%d", client_key, len(data))
+        logger.warning(
+            "NTLM message too short: client=%s bytes=%d", client_key, len(data)
+        )
         raise Unauthorized("Invalid NTLM message", www_auth_scheme, quiet=True)
 
     msg_type = struct.unpack("<I", data[8:12])[0]
@@ -964,7 +967,9 @@ async def verify(request, *, privileged=False):
                 user = await _ntlm_auth_login(request, privileged=privileged)
             except Unauthorized as e:
                 auth_hdr = (e.headers or {}).get("WWW-Authenticate", "")
-                if (auth_hdr.startswith(("NTLM ", "Negotiate "))) and "realm=" not in auth_hdr:
+                if (
+                    auth_hdr.startswith(("NTLM ", "Negotiate "))
+                ) and "realm=" not in auth_hdr:
                     raise
                 ntlm_failed = True
                 user = None
@@ -1062,8 +1067,9 @@ async def login_page(request):
     doc.style(_LOGIN_PAGE_CSS)
     with doc.div(class_="login-card"):
         doc.h1("Authentication Required")
-        with doc.div(class_="content"), doc.form(
-            method="POST", id="loginForm", autocomplete="on"
+        with (
+            doc.div(class_="content"),
+            doc.form(method="POST", id="loginForm", autocomplete="on"),
         ):
             doc.label("Username:", for_="username")
             doc.input(
@@ -1329,9 +1335,7 @@ async def create_token_handler(request):
         if sso_user_id:
             # Non-admin cannot create tokens for other users
             if sso_user_id != current_sso_user_id:
-                raise Forbidden(
-                    "Cannot create tokens for other users", quiet=True
-                )
+                raise Forbidden("Cannot create tokens for other users", quiet=True)
         else:
             sso_user_id = current_sso_user_id
         if not sso_user_id:
@@ -1339,9 +1343,7 @@ async def create_token_handler(request):
     else:
         if username:
             if username != current_username:
-                raise Forbidden(
-                    "Cannot create tokens for other users", quiet=True
-                )
+                raise Forbidden("Cannot create tokens for other users", quiet=True)
         else:
             username = current_username
         if not username:

cista/fileserver.py

@@ -159,7 +159,9 @@ async def copy_or_move(request, name=""):
     # Validate target shape/type before mutating anything.
     for _op_name, op_keys in (("cp", cp_keys), ("mv", mv_keys)):
         if len(op_keys) > 1 and not dst_is_dir:
-            raise BadRequest("Destination must be an existing directory for multiple keys")
+            raise BadRequest(
+                "Destination must be an existing directory for multiple keys"
+            )
         if not op_keys:
             continue
         if not dst_is_dir:
@@ -172,7 +174,9 @@ async def copy_or_move(request, name=""):
                 for key in op_keys:
                     src_abs = _resolve_from_relpath(key_paths[key])
                     if src_abs.is_dir():
-                        raise BadRequest("Cannot move/copy a directory to an existing file")
+                        raise BadRequest(
+                            "Cannot move/copy a directory to an existing file"
+                        )
 
     changed: set[PurePosixPath] = set()
     completed: list[dict[str, str]] = []
@@ -198,11 +202,15 @@ async def copy_or_move(request, name=""):
                                 "Destination must be an existing directory for multiple keys"
                             )
                         dst_item_rel = (
-                            dst_rel / src_rel.name if dst_rel.parts else PurePosixPath(src_rel.name)
+                            dst_rel / src_rel.name
+                            if dst_rel.parts
+                            else PurePosixPath(src_rel.name)
                         )
                     elif dst_is_dir:
                         dst_item_rel = (
-                            dst_rel / src_rel.name if dst_rel.parts else PurePosixPath(src_rel.name)
+                            dst_rel / src_rel.name
+                            if dst_rel.parts
+                            else PurePosixPath(src_rel.name)
                         )
                     else:
                         if not dst_rel.parts:
@@ -533,7 +541,7 @@ def _parse_webdav_destination(dest_header: str) -> tuple[PurePosixPath, Path]:
     if raw_path in (prefix, prefix + "/"):
         rel_str = ""
     elif raw_path.startswith(prefix + "/"):
-        rel_str = raw_path[len(prefix) + 1:]
+        rel_str = raw_path[len(prefix) + 1 :]
     else:
         raise BadRequest("Destination must be within /files")
     return _safe_relpath(rel_str)
@@ -551,10 +559,9 @@ def _rel_to_href(rel: PurePosixPath, *, is_dir: bool) -> str:
 
 def _dav_xml(element: ET.Element) -> bytes:
     """Serialise an ElementTree element to UTF-8 bytes with XML declaration."""
-    return (
-        b'<?xml version="1.0" encoding="UTF-8"?>'
-        + ET.tostring(element, encoding="unicode").encode("utf-8")
-    )
+    return b'<?xml version="1.0" encoding="UTF-8"?>' + ET.tostring(
+        element, encoding="unicode"
+    ).encode("utf-8")
 
 
 def _collect_propfind_entries(rel: PurePosixPath, path: Path, depth: str) -> list[dict]:
@@ -576,7 +583,8 @@ def _propfind_entry(rel: PurePosixPath, path: Path) -> dict:
         "is_dir": is_dir,
         "size": st.st_size,
         "etag": f'"{st.st_mtime:.0f}-{st.st_size}"',
-        "content_type": mimetypes.guess_type(path.name)[0] or "application/octet-stream",
+        "content_type": mimetypes.guess_type(path.name)[0]
+        or "application/octet-stream",
         "last_modified": format_date_time(st.st_mtime),
         "created": datetime.fromtimestamp(st.st_ctime, tz=UTC).strftime(
             "%Y-%m-%dT%H:%M:%SZ"

cista/onlyoffice.py

@@ -0,0 +1,182 @@
+"""OnlyOffice Document Server integration for office document preview.
+
+Provides server-side conversion of office documents to PNG via the
+OnlyOffice Document Server /ConvertService.ashx API. The resulting PNG
+is passed through pyvips for AVIF compression.
+
+Environment requirements:
+    - OnlyOffice Document Server must be running and reachable.
+    - If Document Server runs in Docker, the callback host IP must be
+      reachable from the container (usually the docker bridge IP).
+"""
+
+import json
+import os
+import socket
+import socketserver
+import subprocess
+import threading
+import urllib.request
+from functools import partial
+from http.server import SimpleHTTPRequestHandler
+from pathlib import Path
+from time import perf_counter
+from urllib.parse import quote
+
+import jwt
+from sanic.log import logger
+
+# ---------------------------------------------------------------------------
+# Configuration helpers
+# ---------------------------------------------------------------------------
+
+
+def _get_onlyoffice_url() -> str:
+    return os.environ.get("ONLYOFFICE_URL", "http://localhost:8080")
+
+
+def _get_jwt_secret() -> str | None:
+    return os.environ.get("ONLYOFFICE_JWT_SECRET") or None
+
+
+def _get_callback_host() -> str:
+    """Return the host IP that OnlyOffice (usually in Docker) can use to reach us."""
+    if host := os.environ.get("ONLYOFFICE_CALLBACK_HOST"):
+        return host
+    # Try to auto-detect docker bridge IP
+    try:
+        result = subprocess.run(
+            ["/sbin/ip", "-4", "addr", "show", "docker0"],
+            capture_output=True,
+            text=True,
+            timeout=2,
+            check=False,
+        )
+        for line in result.stdout.splitlines():
+            if "inet " in line:
+                parts = line.strip().split()
+                addr_part = parts[1]  # e.g. 172.17.0.1/16
+                return addr_part.split("/")[0]
+    except Exception:
+        logger.debug("Failed to auto-detect docker bridge IP")
+    return "127.0.0.1"
+
+
+# ---------------------------------------------------------------------------
+# Availability check
+# ---------------------------------------------------------------------------
+
+
+def is_available() -> bool:
+    """Return True if the configured OnlyOffice Document Server is reachable."""
+    url = _get_onlyoffice_url()
+    try:
+        with urllib.request.urlopen(url, timeout=3) as resp:  # noqa: S310
+            return resp.status == 200
+    except Exception:
+        return False
+
+
+# ---------------------------------------------------------------------------
+# Temporary HTTP server so OnlyOffice can download the file
+# ---------------------------------------------------------------------------
+
+
+class _QuietHandler(SimpleHTTPRequestHandler):
+    def log_message(self, fmt, *args) -> None:
+        pass
+
+
+def _get_free_port() -> int:
+    with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
+        s.bind(("0.0.0.0", 0))  # noqa: S104
+        return s.getsockname()[1]
+
+
+def _serve_file_temporarily(file_path: Path):
+    """Start a temporary HTTP server for *file_path* and return (url, server)."""
+    directory = str(file_path.parent)
+    filename = file_path.name
+    port = _get_free_port()
+
+    handler = partial(_QuietHandler, directory=directory)
+    httpd = socketserver.TCPServer(("0.0.0.0", port), handler)  # noqa: S104
+    thread = threading.Thread(target=httpd.serve_forever, daemon=True)
+    thread.start()
+
+    host = _get_callback_host()
+    url = f"http://{host}:{port}/{quote(filename)}"
+    return url, httpd
+
+
+# ---------------------------------------------------------------------------
+# OnlyOffice conversion client
+# ---------------------------------------------------------------------------
+
+
+def _build_jwt_token(payload: dict) -> str | None:
+    secret = _get_jwt_secret()
+    if not secret:
+        return None
+    return jwt.encode(payload, secret, algorithm="HS256")
+
+
+def convert_to_png(file_path: Path, timeout: float = 30.0) -> bytes:
+    """Convert *file_path* to PNG using OnlyOffice Document Server.
+
+    Returns the PNG bytes. Raises RuntimeError on failure.
+    """
+    oo_url = _get_onlyoffice_url().rstrip("/")
+    convert_url = f"{oo_url}/ConvertService.ashx"
+
+    # Start temporary HTTP server so OnlyOffice can fetch the file
+    doc_url, httpd = _serve_file_temporarily(file_path)
+    try:
+        suffix = file_path.suffix.lstrip(".").lower()
+        payload = {
+            "async": False,
+            "filetype": suffix,
+            "key": f"cista_{file_path.stat().st_mtime_ns}",
+            "outputtype": "png",
+            "title": file_path.name,
+            "url": doc_url,
+        }
+
+        headers = {"Content-Type": "application/json"}
+        token = _build_jwt_token(payload)
+        if token:
+            headers["Authorization"] = token
+
+        req = urllib.request.Request(  # noqa: S310
+            convert_url,
+            data=json.dumps(payload).encode(),
+            headers=headers,
+            method="POST",
+        )
+
+        t_start = perf_counter()
+        with urllib.request.urlopen(req, timeout=timeout) as resp:  # noqa: S310
+            body = resp.read()
+        t_end = perf_counter()
+
+        # Parse XML response
+        text = body.decode("utf-8", errors="replace")
+        if "<Error>" in text:
+            code = "unknown"
+            if "<Error>" in text and "</Error>" in text:
+                code = text.split("<Error>")[1].split("</Error>")[0]
+            raise RuntimeError(f"OnlyOffice conversion error: {code}")
+
+        if "<FileUrl>" not in text:
+            raise RuntimeError("OnlyOffice response did not contain FileUrl")
+
+        file_url = text.split("<FileUrl>")[1].split("</FileUrl>")[0]
+        file_url = file_url.replace("&amp;", "&")
+
+        logger.debug("OnlyOffice converted in %.2fs: %s", t_end - t_start, file_url)
+
+        # Download converted PNG
+        with urllib.request.urlopen(file_url, timeout=timeout) as png_resp:  # noqa: S310
+            return png_resp.read()
+    finally:
+        httpd.shutdown()

cista/preview.py

@@ -1,4 +1,5 @@
 import asyncio
+import contextlib
 import gc
 import io
 import mimetypes
@@ -14,10 +15,9 @@ from time import perf_counter
 from urllib.parse import unquote
 from wsgiref.handlers import format_date_time
 
-import msgspec
-
 import av
 import fitz  # PyMuPDF
+import msgspec
 import numpy as np
 import pyvips
 from blake3 import blake3
@@ -29,6 +29,22 @@ from cista import auth, config
 from cista.preview_worker import PreviewRequest, PreviewResponse
 from cista.util.filename import sanitize
 
+# OnlyOffice integration is loaded lazily; availability is checked at runtime.
+_onlyoffice = None
+
+
+def _get_onlyoffice():
+    global _onlyoffice
+    if _onlyoffice is None:
+        try:
+            from cista import onlyoffice as oo
+
+            _onlyoffice = oo
+        except Exception:
+            _onlyoffice = False
+    return _onlyoffice
+
+
 bp = Blueprint("preview", url_prefix="/preview")
 
 
@@ -138,10 +154,8 @@ class _PreviewWorker:
 
     async def kill(self) -> None:
         if self.proc.returncode is None:
-            try:
+            with contextlib.suppress(ProcessLookupError):
                 self.proc.kill()
-            except ProcessLookupError:
-                pass
             await self.proc.wait()
         _active_procs.discard(self.proc)
 
@@ -196,16 +210,16 @@ class _PreviewWorkerPool:
                 timeout=PREVIEW_TIMEOUT,
             )
             return out, resp
-        except asyncio.TimeoutError:
+        except TimeoutError:
             replace = True
             logger.warning(
                 "Preview timeout (%ds) for %s", int(PREVIEW_TIMEOUT), filepath.name
             )
-            raise PreviewTimeout(filepath.name)
-        except WorkerChecksumError:
+            raise PreviewTimeoutError(filepath.name) from None
+        except WorkerChecksumError as e:
             replace = True
             logger.error("Preview checksum mismatch for %s", filepath.name)
-            raise PreviewError(f"worker checksum mismatch for {filepath.name}")
+            raise PreviewError(f"worker checksum mismatch for {filepath.name}") from e
         except PreviewError:
             raise
         except (
@@ -221,15 +235,16 @@ class _PreviewWorkerPool:
             logger.warning(
                 "Preview worker protocol failure for %s: %s", filepath.name, e
             )
-            raise PreviewError(f"worker protocol failure for {filepath.name}: {e}")
+            raise PreviewError(
+                f"worker protocol failure for {filepath.name}: {e}"
+            ) from e
         finally:
             if replace:
                 await self._replace_worker(worker)
+            elif worker.proc.returncode is None:
+                await self._idle.put(worker)
             else:
-                if worker.proc.returncode is None:
-                    await self._idle.put(worker)
-                else:
-                    await self._replace_worker(worker)
+                await self._replace_worker(worker)
 
     async def close(self) -> None:
         self._closed = True
@@ -270,10 +285,8 @@ async def shutdown_preview_workers() -> None:
     if not _active_procs:
         return
     for proc in list(_active_procs):
-        try:
+        with contextlib.suppress(ProcessLookupError):
             proc.kill()
-        except ProcessLookupError:
-            pass
     await asyncio.gather(
         *(proc.wait() for proc in list(_active_procs)), return_exceptions=True
     )
@@ -286,7 +299,7 @@ async def verify_preview(request):
     await auth.verify(request)
 
 
-class PreviewTimeout(Exception):
+class PreviewTimeoutError(Exception):
     """Raised when the preview subprocess exceeds PREVIEW_TIMEOUT."""
 
 
@@ -317,15 +330,56 @@ async def _run_preview_process(
 
 DOC_PREVIEW_SUFFIXES = {".pdf", ".xps", ".epub", ".mobi"}
 
+OFFICE_PREVIEW_SUFFIXES = {
+    ".doc",
+    ".dot",
+    ".docx",
+    ".docm",
+    ".dotx",
+    ".dotm",
+    ".rtf",
+    ".odt",
+    ".ott",
+    ".txt",
+    ".md",
+    ".mhtml",
+    ".mht",
+    ".html",
+    ".htm",
+    ".xml",
+    ".wps",
+    ".wri",
+    # Spreadsheets
+    ".xls",
+    ".xlsx",
+    ".xlsm",
+    ".xlsb",
+    ".xltx",
+    ".xltm",
+    ".ods",
+    ".ots",
+    ".csv",
+    # Presentations
+    ".ppt",
+    ".pptx",
+    ".pptm",
+    ".pps",
+    ".ppsx",
+    ".pot",
+    ".potx",
+    ".odp",
+    ".otp",
+}
+
 
 def is_previewable_path(path) -> bool:
     suffix = path.suffix.lower()
-    if suffix in DOC_PREVIEW_SUFFIXES:
+    if suffix in DOC_PREVIEW_SUFFIXES or suffix in OFFICE_PREVIEW_SUFFIXES:
         return True
     mime_type, _ = mimetypes.guess_type(path.name)
     if not mime_type:
         return False
-    return mime_type.startswith("image/") or mime_type.startswith("video/")
+    return mime_type.startswith(("image/", "video/"))
 
 
 @bp.get("/<path:path>")
@@ -339,7 +393,7 @@ async def preview(req, path):
     try:
         stat = filepath.lstat()
     except FileNotFoundError:
-        raise NotFound() from None
+        raise NotFound from None
 
     if not is_previewable_path(filepath):
         return empty(415)
@@ -363,7 +417,7 @@ async def preview(req, path):
         img, preview_resp = await _run_preview_process(
             filepath, quality, maxsize, maxzoom
         )
-    except PreviewTimeout:
+    except PreviewTimeoutError:
         return empty(504)
     except PreviewError as e:
         if e.backend:
@@ -378,7 +432,7 @@ async def preview(req, path):
     if preview_resp and preview_resp.backend:
         if preview_resp.timings:
             timing_detail = "/".join(
-                str(int(round(value))) for value in preview_resp.timings
+                str(round(value)) for value in preview_resp.timings
             )
             req.ctx._log_extra = f"{preview_resp.backend} {timing_detail} ➛"
         else:
@@ -410,9 +464,15 @@ async def preview(req, path):
 def dispatch(path, quality, maxsize, maxzoom):
     backend = "unknown"
     try:
-        if path.suffix.lower() in DOC_PREVIEW_SUFFIXES:
+        suffix = path.suffix.lower()
+        if suffix in DOC_PREVIEW_SUFFIXES:
             backend = "pdf"
             return process_pdf(path, quality=quality, maxsize=maxsize, maxzoom=maxzoom)
+        if suffix in OFFICE_PREVIEW_SUFFIXES:
+            backend = "onlyoffice"
+            return process_office(
+                path, quality=quality, maxsize=maxsize, maxzoom=maxzoom
+            )
         mime_type, _ = mimetypes.guess_type(path.name)
         if mime_type and mime_type.startswith("video/"):
             backend = "video"
@@ -483,6 +543,36 @@ def process_pdf(path, *, maxsize, maxzoom, quality, page_number=0):
     )
 
 
+def process_office(path, *, quality, maxsize, maxzoom):
+    t_load_start = perf_counter()
+    oo = _get_onlyoffice()
+    if oo is False:
+        raise RuntimeError("OnlyOffice is not installed")
+    if not oo.is_available():
+        raise RuntimeError("OnlyOffice Document Server is not reachable")
+    png_bytes = oo.convert_to_png(path)
+    t_load_end = perf_counter()
+
+    t_save_start = perf_counter()
+    img = pyvips.Image.new_from_buffer(png_bytes, "")
+    scale = min(maxsize / img.width, maxsize / img.height, 1.0)
+    if scale < 1.0:
+        img = img.resize(scale)
+    ret = img.write_to_buffer(".avif", Q=quality, effort=AVIF_FAST_EFFORT, strip=True)
+    backend = "onlyoffice+pyvips"
+    t_save_end = perf_counter()
+
+    return ret, PreviewResponse(
+        ok=True,
+        mime="image/avif",
+        backend=backend,
+        timings=[
+            round((t_load_end - t_load_start) * 1000, 1),
+            round((t_save_end - t_save_start) * 1000, 1),
+        ],
+    )
+
+
 def process_video(path, *, maxsize, quality):
     frame = None
     imgdata = io.BytesIO()
@@ -574,7 +664,8 @@ def process_video(path, *, maxsize, quality):
                 "threads": "1",
             },
         )
-        assert isinstance(ostream, av.VideoStream)
+        if not isinstance(ostream, av.VideoStream):
+            raise PreviewError("failed to initialize AV1 video stream")
         ostream.width = frame.width
         ostream.height = frame.height
         ostream.pix_fmt = frame.format.name

cista/preview_worker.py

@@ -9,9 +9,9 @@ Framed response format:
 where packet = (uint32 json size)(uint32 payload size)(json)(binary payload).
 """
 
-import logging
 import contextlib
 import io
+import logging
 import struct
 import sys
 from pathlib import Path

cista/sanic_logging.py

@@ -201,7 +201,9 @@ WS_CLOSE_CODES = {
 }
 
 
-def log_ws_close(ws_id: int, close_code: int | None, duration: float, extra: str | None = None) -> None:
+def log_ws_close(
+    ws_id: int, close_code: int | None, duration: float, extra: str | None = None
+) -> None:
     """Log WebSocket connection close with duration and status."""
     id_str = _format_ws_id(ws_id)
     timing = format_duration_ms(duration * 1000)
@@ -218,7 +220,15 @@ def log_ws_close(ws_id: int, close_code: int | None, duration: float, extra: str
     timing_str = f"{_TIMING}{timing}{_RESET}"
     extra_str = f" {_TIMING}{extra}{_RESET}" if extra else ""
 
-    logger.info("%s %s %s %s %s%s", " " * 19, id_str, method_str, status_str, timing_str, extra_str)
+    logger.info(
+        "%s %s %s %s %s%s",
+        " " * 19,
+        id_str,
+        method_str,
+        status_str,
+        timing_str,
+        extra_str,
+    )
 
 
 def configure_access_logging() -> None:

cista/session.py

@@ -1,38 +1,40 @@
+import secrets
 from time import time
 
-import jwt
-
-from cista.config import derived_secret
-
-
-def session_secret():
-    return derived_secret("session")
-
+# In-memory session store: token -> {"username": str, "exp": int}
+_sessions: dict[str, dict] = {}
 
 max_age = 365 * 86400  # Seconds since last login
 
 
+def _token() -> str:
+    return secrets.token_urlsafe(8)
+
+
+def _purge_expired() -> None:
+    now = time()
+    expired = [t for t, s in _sessions.items() if s["exp"] <= now]
+    for t in expired:
+        del _sessions[t]
+
+
 def get(request):
-    try:
-        return jwt.decode(request.cookies.s, session_secret(), algorithms=["HS256"])
-    except Exception:
-        return False if "s" in request.cookies else None
+    token = request.cookies.get("s")
+    if token is None:
+        return None
+    s = _sessions.get(token)
+    if s is None:
+        return False  # Cookie present but session not found / expired
+    if s["exp"] <= time():
+        del _sessions[token]
+        return False
+    return s
 
 
 def create(res, username, *, secure: bool = True, **kwargs):
-    data = {
-        "exp": int(time()) + max_age,
-        "username": username,
-        **kwargs,
-    }
-    s = jwt.encode(data, session_secret())
-    res.cookies.add_cookie("s", s, httponly=True, max_age=max_age, secure=secure)
-
-
-def update(res, s, *, secure: bool = True, **kwargs):
-    s.update(kwargs)
-    max_age = max(1, s["exp"] - int(time()))
-    token = jwt.encode(s, session_secret())
+    _purge_expired()
+    token = _token()
+    _sessions[token] = {"exp": int(time()) + max_age, "username": username, **kwargs}
     res.cookies.add_cookie("s", token, httponly=True, max_age=max_age, secure=secure)
 
 

cista/util/lrucache.py

@@ -58,7 +58,9 @@ class LRUCache:
         Expire items that are either too old or exceed cache capacity.
         """
         ts = monotonic() - self.maxage
-        while len(self.cache) > self.capacity or (self.cache and self.cache[-1][2] < ts):
+        while len(self.cache) > self.capacity or (
+            self.cache and self.cache[-1][2] < ts
+        ):
             self.cache.pop()[1].close()
 
     def close(self):

frontend/src/components/HeaderMain.vue

@@ -149,6 +149,7 @@ const settingsMenu = (e: Event) => {
   ContextMenu.showContextMenu({
     // @ts-ignore
     x: e.target.getBoundingClientRect().right,
+    // @ts-ignore
     y: e.target.getBoundingClientRect().bottom,
     items
   })

frontend/src/components/MediaPreview.vue

@@ -17,10 +17,10 @@
   <span v-else class="file icon" :class="`ext-${doc.ext}`"></span>
 </template>
 
-<script setup lang=ts>
-import { computed, ref } from 'vue'
-import type { Doc } from '@/repositories/Document'
+<script setup lang="ts">
 import { Play as PlayIcon, Spinner as SpinnerIcon } from '@/assets/svg'
+import type { Doc } from '@/repositories/Document'
+import { computed, ref } from 'vue'
 
 const aud = ref<HTMLAudioElement | null>(null)
 const vid = ref<HTMLVideoElement | null>(null)
@@ -29,7 +29,11 @@ const props = defineProps<{
   doc: Doc
   quality: string
 }>()
-const previewSrc = computed(() => props.doc.previewurl ? `${props.doc.previewurl}?${props.quality}&t=${props.doc.mtime}` : '')
+const previewSrc = computed(() =>
+  props.doc.previewurl
+    ? `${props.doc.previewurl}?${props.quality}&t=${props.doc.mtime}`
+    : ''
+)
 
 const onplay = () => {
   if (!media.value) return
@@ -51,8 +55,11 @@ const applyPoster = (el: HTMLVideoElement) => {
 let fscurrent: HTMLVideoElement | null = null
 const next = () => {
   if (!media.value) return
-  media.value.load()  // Restore poster
-  const medias = Array.from(document.querySelectorAll('video, audio')) as (HTMLAudioElement | HTMLVideoElement)[]
+  media.value.load() // Restore poster
+  const medias = Array.from(document.querySelectorAll('video, audio')) as (
+    | HTMLAudioElement
+    | HTMLVideoElement
+  )[]
   if (medias.length === 0) return
   let el: HTMLAudioElement | HTMLVideoElement | null = null
   for (const i in medias) {
@@ -62,28 +69,32 @@ const next = () => {
     }
   }
   if (!el) return
-  if (el.tagName === "VIDEO" && document.fullscreenElement === media.value) {
+  if (el.tagName === 'VIDEO' && document.fullscreenElement === media.value) {
     // Fullscreen needs to use the current video element for the next video
     // because we are not allowed to fullscreen the next one.
     // FIXME: Write our own player to avoid this problem...
     const elem = media.value as HTMLVideoElement
     const playing = el as HTMLVideoElement
     if (elem === playing) {
-      playing.play()  // Only one video, just replay
+      playing.play() // Only one video, just replay
       return
     }
     if (!fscurrent) {
-      elem.addEventListener('fullscreenchange', ev => {
-        if (!fscurrent) return
-        // Restore the original video element and continue with the one that was playing
-        fscurrent.currentTime = elem.currentTime
-        fscurrent.click()
-        if (!elem.paused) fscurrent.play()
-        fscurrent = null
-        elem.src = props.doc.url
-        applyPoster(elem)
-        onpaused()
-      }, {once: true})
+      elem.addEventListener(
+        'fullscreenchange',
+        ev => {
+          if (!fscurrent) return
+          // Restore the original video element and continue with the one that was playing
+          fscurrent.currentTime = elem.currentTime
+          fscurrent.click()
+          if (!elem.paused) fscurrent.play()
+          fscurrent = null
+          elem.src = props.doc.url
+          applyPoster(elem)
+          onpaused()
+        },
+        { once: true }
+      )
     }
     fscurrent = playing
     elem.src = playing.src
@@ -99,7 +110,10 @@ defineExpose({
     if (!media.value) return false
     if (media.value.paused) {
       media.value.play()
-      for (const el of Array.from(document.querySelectorAll('video, audio')) as (HTMLAudioElement | HTMLVideoElement)[]) {
+      for (const el of Array.from(document.querySelectorAll('video, audio')) as (
+        | HTMLAudioElement
+        | HTMLVideoElement
+      )[]) {
         if (el === media.value) continue
         el.pause()
       }
@@ -108,19 +122,67 @@ defineExpose({
     }
     return true
   },
-  media,
+  media
 })
 
-
 const video = () => ['mkv', 'mp4', 'webm', 'mov', 'avi'].includes(props.doc.ext)
 const audio = () => ['mp3', 'flac', 'ogg', 'aac'].includes(props.doc.ext)
-const archive = () => ['zip', 'tar', 'gz', 'bz2', 'xz', '7z', 'rar'].includes(props.doc.ext)
+const archive = () =>
+  ['zip', 'tar', 'gz', 'bz2', 'xz', '7z', 'rar'].includes(props.doc.ext)
 const showProgress = () => !props.doc.complete && (preview() || props.doc.img)
-const preview = () => (
-  ['bmp', 'ico', 'tif', 'tiff', 'heic', 'heif', 'pdf', 'epub', 'mobi'].includes(props.doc.ext) ||
-  props.doc.size > 500000 &&
-  ['avif', 'webp', 'png', 'jpg', 'jpeg'].includes(props.doc.ext)
-)
+const preview = () =>
+  [
+    'bmp',
+    'ico',
+    'tif',
+    'tiff',
+    'heic',
+    'heif',
+    'pdf',
+    'epub',
+    'mobi',
+    // Documents
+    'doc',
+    'dot',
+    'docx',
+    'docm',
+    'dotx',
+    'dotm',
+    'rtf',
+    'odt',
+    'ott',
+    'txt',
+    'md',
+    'mhtml',
+    'mht',
+    'html',
+    'htm',
+    'xml',
+    'wps',
+    'wri',
+    // Spreadsheets
+    'xls',
+    'xlsx',
+    'xlsm',
+    'xlsb',
+    'xltx',
+    'xltm',
+    'ods',
+    'ots',
+    'csv',
+    // Presentations
+    'ppt',
+    'pptx',
+    'pptm',
+    'pps',
+    'ppsx',
+    'pot',
+    'potx',
+    'odp',
+    'otp'
+  ].includes(props.doc.ext) ||
+  (props.doc.size > 500000 &&
+    ['avif', 'webp', 'png', 'jpg', 'jpeg'].includes(props.doc.ext))
 </script>
 
 <style scoped>

frontend/src/repositories/Document.ts

@@ -85,7 +85,55 @@ export class Doc {
     if (this.dir) return false
     if (this.img) return true
     // Not a comprehensive list, but good enough for now
-    return ['mp4', 'mkv', 'webm', 'ogg', 'mp3', 'flac', 'aac', 'pdf'].includes(this.ext)
+    return [
+      'mp4',
+      'mkv',
+      'webm',
+      'ogg',
+      'mp3',
+      'flac',
+      'aac',
+      'pdf',
+      // Documents
+      'doc',
+      'dot',
+      'docx',
+      'docm',
+      'dotx',
+      'dotm',
+      'rtf',
+      'odt',
+      'ott',
+      'txt',
+      'md',
+      'mhtml',
+      'mht',
+      'html',
+      'htm',
+      'xml',
+      'wps',
+      'wri',
+      // Spreadsheets
+      'xls',
+      'xlsx',
+      'xlsm',
+      'xlsb',
+      'xltx',
+      'xltm',
+      'ods',
+      'ots',
+      'csv',
+      // Presentations
+      'ppt',
+      'pptx',
+      'pptm',
+      'pps',
+      'ppsx',
+      'pot',
+      'potx',
+      'odp',
+      'otp'
+    ].includes(this.ext)
   }
   get previewurl(): string {
     if (!this.complete || !this.previewable) return ''

pyproject.toml

@@ -25,7 +25,6 @@ classifiers = [
 requires-python = ">=3.11"
 dependencies = [
     "argon2-cffi>=25.1.0",
-    "aspose-words>=26.4.0",
     "av>=15.0.0",
     "blake3>=1.0.5",
     "docopt-ng>=0.9.0",

tests/test_files_auth.py

@@ -6,7 +6,6 @@ from pathlib import Path
 from time import time
 from uuid import uuid4
 
-import jwt
 import pytest
 import pytest_asyncio
 from sanic import Sanic
@@ -26,19 +25,28 @@ def _ntlm_type1() -> dict[str, str]:
     return {"Authorization": f"NTLM {base64.b64encode(msg).decode()}"}
 
 
-def _ntlm_type3(username: str, password: str, domain: str, challenge: bytes) -> dict[str, str]:
+def _ntlm_type3(
+    username: str, password: str, domain: str, challenge: bytes
+) -> dict[str, str]:
     """Build an NTLMv2 Type 3 message for testing."""
     from Crypto.Hash import MD4
 
     # NT hash
     nt_hash = MD4.new(password.encode("utf-16le")).digest()
     # NTLMv2 hash
-    ntlmv2_hash = hmac.new(nt_hash, (username.upper() + domain).encode("utf-16le"), hashlib.md5).digest()
+    ntlmv2_hash = hmac.new(
+        nt_hash, (username.upper() + domain).encode("utf-16le"), hashlib.md5
+    ).digest()
 
     # Build a minimal blob
     timestamp = struct.pack("<Q", 0)
     client_nonce = b"\x01" * 8
-    blob = b"\x01\x01\x00\x00\x00\x00\x00\x00" + timestamp + client_nonce + b"\x00\x00\x00\x00"
+    blob = (
+        b"\x01\x01\x00\x00\x00\x00\x00\x00"
+        + timestamp
+        + client_nonce
+        + b"\x00\x00\x00\x00"
+    )
 
     # NT proof
     nt_proof = hmac.new(ntlmv2_hash, challenge + blob, hashlib.md5).digest()
@@ -85,11 +93,11 @@ def _ntlm_type3(username: str, password: str, domain: str, challenge: bytes) ->
 
 
 def _session_cookie_header(username: str) -> dict[str, str]:
-    token = jwt.encode(
-        {"exp": int(time()) + session.max_age, "username": username},
-        session.session_secret(),
-        algorithm="HS256",
-    )
+    token = "test-" + username
+    session._sessions[token] = {
+        "exp": int(time()) + session.max_age,
+        "username": username,
+    }
     return {"Cookie": f"s={token}"}
 
 
@@ -133,7 +141,9 @@ async def client(setup_storage: Path):
 
 @pytest.mark.asyncio
 async def test_basic_auth_allows_private_file_access(client):
-    _, res = await client.get("/files/hello.txt", headers=_basic_auth("alice", "secret"))
+    _, res = await client.get(
+        "/files/hello.txt", headers=_basic_auth("alice", "secret")
+    )
 
     assert res.status_code == 200
     assert res.body == b"hello"
@@ -162,12 +172,18 @@ async def test_unauthenticated_sends_basic_auth_challenge(client):
     _, res = await client.request("PROPFIND", "/files/")
 
     assert res.status_code == 401
-    assert res.headers.get("www-authenticate", "").lower().startswith('basic realm="cista"')
+    assert (
+        res.headers.get("www-authenticate", "")
+        .lower()
+        .startswith('basic realm="cista"')
+    )
 
 
 @pytest.mark.asyncio
 async def test_basic_auth_with_token(client):
-    _, res = await client.get("/files/hello.txt", headers=_basic_auth("token", "test_token_123"))
+    _, res = await client.get(
+        "/files/hello.txt", headers=_basic_auth("token", "test_token_123")
+    )
 
     assert res.status_code == 200
     assert res.body == b"hello"
@@ -175,7 +191,9 @@ async def test_basic_auth_with_token(client):
 
 @pytest.mark.asyncio
 async def test_browser_unauthenticated_sends_cookie_challenge(client):
-    _, res = await client.get("/files/", headers={"Accept": "text/html,application/xhtml+xml"})
+    _, res = await client.get(
+        "/files/", headers={"Accept": "text/html,application/xhtml+xml"}
+    )
 
     assert res.status_code == 401
     assert res.headers.get("www-authenticate", "").lower().startswith("cookie")

tests/test_files_path_security.py

@@ -1,4 +1,5 @@
 """Path traversal and percent-encoding security tests for the fileserver."""
+
 from pathlib import Path
 from uuid import uuid4
 
@@ -22,7 +23,13 @@ def setup_storage(tmp_path: Path):
 @pytest_asyncio.fixture()
 async def client(setup_storage: Path):
     app = Sanic(f"files-path-sec-test-{uuid4().hex}", strict_slashes=True)
-    app.router.ALLOWED_METHODS = (*app.router.ALLOWED_METHODS, "MKCOL", "MOVE", "COPY", "PROPFIND")
+    app.router.ALLOWED_METHODS = (
+        *app.router.ALLOWED_METHODS,
+        "MKCOL",
+        "MOVE",
+        "COPY",
+        "PROPFIND",
+    )
     app.blueprint(fileserver_bp)
     yield app.asgi_client
 

tests/test_files_rest_api.py

@@ -22,7 +22,13 @@ def setup_storage(tmp_path: Path):
 @pytest_asyncio.fixture()
 async def client(setup_storage: Path):
     app = Sanic(f"files-rest-test-{uuid4().hex}", strict_slashes=True)
-    app.router.ALLOWED_METHODS = (*app.router.ALLOWED_METHODS, "MKCOL", "MOVE", "COPY", "PROPFIND")
+    app.router.ALLOWED_METHODS = (
+        *app.router.ALLOWED_METHODS,
+        "MKCOL",
+        "MOVE",
+        "COPY",
+        "PROPFIND",
+    )
     app.blueprint(fileserver_bp)
     yield app.asgi_client
 
@@ -214,7 +220,9 @@ async def test_post_rejects_multiple_keys_to_file_target(client, setup_storage:
 
 
 @pytest.mark.asyncio
-async def test_post_rejects_directory_to_existing_file_target(client, setup_storage: Path):
+async def test_post_rejects_directory_to_existing_file_target(
+    client, setup_storage: Path
+):
     (setup_storage / "folder").mkdir()
     (setup_storage / "folder" / "nested.txt").write_text("n", encoding="utf-8")
     (setup_storage / "existing.txt").write_text("e", encoding="utf-8")

tests/test_files_static_streaming.py

@@ -21,7 +21,13 @@ def setup_storage(tmp_path: Path):
 @pytest_asyncio.fixture()
 async def client(setup_storage: Path):
     app = Sanic(f"files-static-test-{uuid4().hex}", strict_slashes=True)
-    app.router.ALLOWED_METHODS = (*app.router.ALLOWED_METHODS, "MKCOL", "MOVE", "COPY", "PROPFIND")
+    app.router.ALLOWED_METHODS = (
+        *app.router.ALLOWED_METHODS,
+        "MKCOL",
+        "MOVE",
+        "COPY",
+        "PROPFIND",
+    )
     app.blueprint(fileserver_bp)
     yield app.asgi_client
 

tests/test_files_webdav.py

@@ -1,4 +1,5 @@
 """WebDAV protocol tests: OPTIONS, PROPFIND, PROPPATCH, COPY, MOVE, LOCK, UNLOCK."""
+
 import xml.etree.ElementTree as ET
 from pathlib import Path
 from uuid import uuid4
@@ -113,9 +114,7 @@ async def test_propfind_file_has_content_length(client, setup_storage: Path):
 
 @pytest.mark.asyncio
 async def test_propfind_depth_infinity_rejected(client, setup_storage: Path):
-    _, res = await client.request(
-        "PROPFIND", "/files/", headers={"Depth": "infinity"}
-    )
+    _, res = await client.request("PROPFIND", "/files/", headers={"Depth": "infinity"})
     assert res.status_code == 403
 
 

tests/test_lrucache.py

@@ -12,19 +12,19 @@ def mock_open(key):
 
 
 def test_contains():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=10)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=10)
     assert "key1" not in cache
     cache["key1"]
     assert "key1" in cache
 
 
 def test_getitem():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=10)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=10)
     assert cache["key1"].content == "content-key1"
 
 
 def test_capacity():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=10)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=10)
     item1 = cache["key1"]
     cache["key2"]
     cache["key3"]
@@ -33,7 +33,7 @@ def test_capacity():
 
 
 def test_expiry():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=0.1)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=0.1)
     item = cache["key1"]
     sleep(0.2)  # Wait for expiration
     cache.expire_items()
@@ -42,7 +42,7 @@ def test_expiry():
 
 
 def test_close():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=10)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=10)
     item = cache["key1"]
     cache.close()
     assert "key1" not in cache
@@ -50,7 +50,7 @@ def test_close():
 
 
 def test_lru_mechanism():
-    cache = LRUCache(open=mock_open, capacity=2, maxage=10)
+    cache = LRUCache(opener=mock_open, capacity=2, maxage=10)
     item1 = cache["key1"]
     item2 = cache["key2"]
     cache["key1"]  # Make key1 recently used