Add token-based auth for WebDAV/NTLM and API access

- Add Token model with CRUD endpoints (/api/tokens, /auth/tokens)
- Support Basic auth with token:<secret> for built-in users
- Implement full NTLMv2 handshake for Windows WebDAV clients
- Add SSO token auth via check_permissions() proxy
- Hydrate request auth context from session or Authorization header
- Persist session cookie after successful Authorization-based login
- Add secure flag to session cookies based on request scheme
- Add frontend UserTokensModal for creating/revoking tokens
- Fix devserver to run workspace source via python -m cista
- Add tests for token CRUD and file auth (Basic, NTLM, session)
- Remove proactive WWW-Authenticate advertisement

cista/api.py

@@ -7,6 +7,11 @@ from sanic import Blueprint, json
 from sanic.exceptions import BadRequest
 
 from cista import __version__, auth, config, sso, watching
+from cista.auth import (
+    create_token_handler,
+    delete_token_handler,
+    list_tokens_handler,
+)
 from cista.fileio import FileServer
 from cista.util.apphelpers import websocket_wrapper
 
@@ -132,3 +137,19 @@ async def update_name(request):
     # Return the effective name (fallback to path.name if empty)
     effective_name = name or config.config.path.name
     return json({"message": "Server name updated", "name": effective_name})
+
+
+# Token management endpoints (available in all modes; primary path in SSO mode)
+@bp.get("tokens")
+async def list_api_tokens(request):
+    return await list_tokens_handler(request)
+
+
+@bp.post("tokens")
+async def create_api_token(request):
+    return await create_token_handler(request)
+
+
+@bp.delete("tokens/<token_id>")
+async def delete_api_token(request, token_id):
+    return await delete_token_handler(request, token_id)

cista/app.py

@@ -40,54 +40,13 @@ app.router.ALLOWED_METHODS = (
 )
 
 configure_main_logging()
-# Register either SSO proxy or built-in auth routes based on PASKIA_BACKEND_URL
-if sso.paskia_enabled():
-    app.blueprint(sso.bp)  # SSO proxy for /auth/* routes
-else:
-    app.blueprint(auth.bp)  # Built-in auth routes
-app.blueprint(preview.bp)
-app.blueprint(bp)
-app.blueprint(fileserver.bp)
-app.exception(Exception)(handle_sanic_exception)
-
-
-setproctitle("cista-main")
-
-
-@app.before_server_start
-async def main_start(app):
-    config.load_config()
-    setproctitle(f"cista {config.config.path.name}")
-    app.ctx.threadexec = ThreadPoolExecutor(
-        max_workers=4, thread_name_prefix="cista-worker"
-    )
-    # Larger pool for long-running but low-memory zip operations
-    app.ctx.zipexec = ThreadPoolExecutor(max_workers=32, thread_name_prefix="cista-zip")
-    await start_preview_workers()
-    watching.start(app)
-
-
-# Sanic sometimes fails to execute after_server_stop, so we do it before instead (potentially interrupting handlers)
-@app.before_server_stop
-async def main_stop(app):
-    watching.stop(app)
-    await shutdown_preview_workers()
-    app.ctx.threadexec.shutdown()
-    app.ctx.zipexec.shutdown(cancel_futures=True)
-    await sso.close_client()
-    logger.debug("Cista worker threads all finished")
 
 
 @app.on_request
 async def use_session(req):
     req.ctx._log_start = time.perf_counter()
-    req.ctx.session = session.get(req)
+    req.ctx._auth_flow = ["session: start"]
-    try:
+    auth.hydrate_request_auth_context(req, source="app.on_request")
-        req.ctx.username = req.ctx.session["username"]  # type: ignore
-        req.ctx.user = config.config.users[req.ctx.username]
-    except (AttributeError, KeyError, TypeError):
-        req.ctx.username = None
-        req.ctx.user = None
     # CSRF protection
     if req.method == "GET" and req.headers.upgrade != "websocket":
         return  # Ordinary GET requests are fine
@@ -129,6 +88,56 @@ async def forward_sso_cookies(req, res):
             res.headers.add("set-cookie", cookie)
 
 
+@app.on_response
+async def persist_auth_session(req, res):
+    """Persist a session cookie after successful Authorization-based auth."""
+    username = getattr(req.ctx, "_create_session_username", None)
+    if not username or res.status >= 400:
+        return
+    existing = getattr(req.ctx, "session", None)
+    if isinstance(existing, dict) and existing.get("username") == username:
+        return
+    session.create(res, username, secure=req.scheme == "https")
+
+
+# Register either SSO proxy or built-in auth routes based on PASKIA_BACKEND_URL
+if sso.paskia_enabled():
+    app.blueprint(sso.bp)  # SSO proxy for /auth/* routes
+else:
+    app.blueprint(auth.bp)  # Built-in auth routes
+app.blueprint(preview.bp)
+app.blueprint(bp)
+app.blueprint(fileserver.bp)
+app.exception(Exception)(handle_sanic_exception)
+
+
+setproctitle("cista-main")
+
+
+@app.before_server_start
+async def main_start(app):
+    config.load_config()
+    setproctitle(f"cista {config.config.path.name}")
+    app.ctx.threadexec = ThreadPoolExecutor(
+        max_workers=4, thread_name_prefix="cista-worker"
+    )
+    # Larger pool for long-running but low-memory zip operations
+    app.ctx.zipexec = ThreadPoolExecutor(max_workers=32, thread_name_prefix="cista-zip")
+    await start_preview_workers()
+    watching.start(app)
+
+
+# Sanic sometimes fails to execute after_server_stop, so we do it before instead (potentially interrupting handlers)
+@app.before_server_stop
+async def main_stop(app):
+    watching.stop(app)
+    await shutdown_preview_workers()
+    app.ctx.threadexec.shutdown()
+    app.ctx.zipexec.shutdown(cancel_futures=True)
+    await sso.close_client()
+    logger.debug("Cista worker threads all finished")
+
+
 www = {}
 
 

cista/config.py

@@ -22,6 +22,7 @@ class Config(msgspec.Struct):
     name: str = ""
     users: dict[str, User] = {}
     links: dict[str, Link] = {}
+    tokens: dict[str, Token] = {}
 
 
 # Typing: arguments for config-modifying functions
@@ -43,6 +44,14 @@ class Link(msgspec.Struct, omit_defaults=True):
     expires: int = 0
 
 
+class Token(msgspec.Struct, omit_defaults=True):
+    key: str = ""  # plain text secret (shown once on creation)
+    username: str = ""  # set in built-in mode
+    sso_user_id: str = ""  # set in SSO mode
+    name: str = ""
+    created: int = 0  # noqa: N815
+
+
 # Global variables - initialized during application startup
 config: Config
 conffile: Path
@@ -204,3 +213,29 @@ def del_user(conf: Config, name: str) -> Config:
     settings = msgspec.to_builtins(conf, enc_hook=enc_hook)
     settings["users"].pop(name)
     return msgspec.convert(settings, Config, dec_hook=dec_hook)
+
+
+@modifies_config
+def update_token(conf: Config, token_id: str, changes: dict) -> Config:
+    """Create or update a token."""
+    try:
+        t = msgspec.convert(
+            msgspec.to_builtins(conf.tokens[token_id], enc_hook=enc_hook),
+            Token,
+            dec_hook=dec_hook,
+        )
+    except KeyError:
+        t = Token()
+    tdict = msgspec.to_builtins(t, enc_hook=enc_hook)
+    tdict.update(changes)
+    settings = msgspec.to_builtins(conf, enc_hook=enc_hook)
+    settings["tokens"][token_id] = msgspec.convert(tdict, Token, dec_hook=dec_hook)
+    return msgspec.convert(settings, Config, dec_hook=dec_hook)
+
+
+@modifies_config
+def del_token(conf: Config, token_id: str) -> Config:
+    """Delete a token by its stable id."""
+    settings = msgspec.to_builtins(conf, enc_hook=enc_hook)
+    settings["tokens"].pop(token_id, None)
+    return msgspec.convert(settings, Config, dec_hook=dec_hook)

cista/sanic_logging.py

@@ -201,7 +201,7 @@ WS_CLOSE_CODES = {
 }
 
 
-def log_ws_close(ws_id: int, close_code: int | None, duration: float) -> 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)
@@ -216,8 +216,9 @@ def log_ws_close(ws_id: int, close_code: int | None, duration: float) -> None:
     method_str = _format_method_label("closed", color=_TIMING)
     status_str = f"{_WS_STATUS}{code} {status}{_RESET}"
     timing_str = f"{_TIMING}{timing}{_RESET}"
+    extra_str = f" {_TIMING}{extra}{_RESET}" if extra else ""
 
-    logger.info("%s %s %s %s %s", " " * 19, id_str, method_str, status_str, timing_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

@@ -19,21 +19,21 @@ def get(request):
         return False if "s" in request.cookies else None
 
 
-def create(res, username, **kwargs):
+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)
+    res.cookies.add_cookie("s", s, httponly=True, max_age=max_age, secure=secure)
 
 
-def update(res, s, **kwargs):
+def update(res, s, *, secure: bool = True, **kwargs):
     s.update(kwargs)
     s = jwt.encode(s, session_secret())
     max_age = max(1, s["exp"] - int(time()))  # type: ignore
-    res.cookies.add_cookie("s", s, httponly=True, max_age=max_age)
+    res.cookies.add_cookie("s", s, httponly=True, max_age=max_age, secure=secure)
 
 
 def delete(res):

cista/sso.py

@@ -152,6 +152,61 @@ async def validate_sso_request(request, *, perm: str = "cista:login") -> dict |
         )
 
 
+async def check_permissions(user_id: str, perm: str) -> dict:
+    """Check if a Paskia user has the given permission.
+
+    Args:
+        user_id: The Paskia user UUID
+        perm: Permission to check (e.g. cista:login or cista:admin)
+
+    Returns:
+        User info dict if permission is granted
+
+    Raises:
+        Forbidden: If permission is denied or check fails
+        SanicException: If the auth service is unreachable
+    """
+    if not paskia_enabled():
+        raise ValueError("Paskia not enabled")
+
+    client = await get_client()
+    url = f"{PASKIA_BACKEND_URL}/auth/api/check-permissions"
+
+    try:
+        response = await client.post(
+            url,
+            json={"user_id": user_id, "perm": perm},
+            headers={"accept": "application/json"},
+        )
+
+        if response.status_code == 200:
+            return response.json()
+
+        try:
+            error_data = response.json()
+        except Exception:
+            error_data = {"detail": response.text or "Permission check failed"}
+
+        if response.status_code == 403:
+            raise Forbidden(
+                error_data.get("detail", "Access denied"),
+                quiet=True,
+            )
+        else:
+            raise Forbidden(
+                error_data.get("detail", "Permission check failed"),
+                quiet=True,
+            )
+
+    except httpx.RequestError as e:
+        logger.error(f"Permission check {url} network error: {e}")
+        raise SanicException(
+            "Authentication service unavailable",
+            status_code=502,
+            quiet=True,
+        )
+
+
 async def proxy_auth_request(request):
     """Proxy a request to the auth backend.
 

cista/util/apphelpers.py

@@ -24,10 +24,12 @@ def jres(data, **kwargs):
 
 async def handle_sanic_exception(request, e):
     context, code = {}, 500
+    headers = None
     message = str(e)
     if isinstance(e, SanicException):
         context = e.context or {}
         code = e.status_code
+        headers = getattr(e, "headers", None)
     if not message or not request.app.debug and code == 500:
         message = "Internal Server Error"
     message = f"⚠️ {message}" if code < 500 else f"🛑 {message}"
@@ -41,6 +43,7 @@ async def handle_sanic_exception(request, e):
         return jres(
             response_data,
             status=code,
+            headers=headers,
         )
     # Redirections flash the error message via cookies
     if "redirect" in context:
@@ -60,6 +63,7 @@ def websocket_wrapper(handler):
         extra = username if username else None
         start = time.perf_counter()
         ws_id = log_ws_open(request, extra=extra)
+        close_extra = None
         try:
             await auth.verify(request)
             await handler(request, ws, *args, **kwargs)
@@ -72,6 +76,7 @@ def websocket_wrapper(handler):
             await asend(ws, ErrorMsg({"code": code, "message": message, **context}))
             if not getattr(e, "quiet", False) or code == 500:
                 logger.exception(f"{code} {e!r}")
+            close_extra = f"{code} {message}"
             raise
         finally:
             duration = time.perf_counter() - start
@@ -86,6 +91,6 @@ def websocket_wrapper(handler):
                     close_code = p.close_code
             except AttributeError:
                 pass
-            log_ws_close(ws_id, close_code, duration)
+            log_ws_close(ws_id, close_code, duration, extra=close_extra)
 
     return wrapper

frontend/src/App.vue

@@ -7,6 +7,7 @@
   </div>
   <SettingsModal />
   <UserManagementModal />
+  <UserTokensModal />
   <AccessDeniedModal />
   <header>
     <HeaderMain ref="headerMain" :path="path.pathList" :query="path.query" />
@@ -35,6 +36,7 @@ import Router from '@/router/index'
 import type { SortOrder } from './utils/docsort'
 import type SettingsModalVue from './components/SettingsModal.vue'
 import UserManagementModal from './components/UserManagementModal.vue'
+import UserTokensModal from './components/UserTokensModal.vue'
 import AccessDeniedModal from './components/AccessDeniedModal.vue'
 import SelectionToolbar from './components/SelectionToolbar.vue'
 

frontend/src/components/HeaderMain.vue

@@ -105,6 +105,10 @@ const settingsMenu = (e: Event) => {
     items.push({ label: '🔑 Change Password', onClick: () => { store.dialog = 'settings' }})
   }
 
+  if (store.user.isLoggedIn) {
+    items.push({ label: '🔑 API Tokens', onClick: () => { store.dialog = 'tokens' }})
+  }
+
   if (store.user.privileged) {
     items.push({ label: '⚙️ Admin Settings', onClick: () => { store.dialog = 'usermgmt' }})
   }

frontend/src/components/UserManagementModal.vue

@@ -188,14 +188,14 @@ const deleteUserAction = async (username: string) => {
 }
 
 const copySuccess = async (isButtonClick: boolean = false) => {
-  const passwordMatch = success.value.match(/(?:Password|New password): (.+)/)
+  const passwordMatch = success.value.match(/(?:Password|New password|Key): (.+)/)
   if (passwordMatch) {
     await navigator.clipboard.writeText(passwordMatch[1]!)
     if (isButtonClick) {
       // Show "Copied!" indication on button
       copyButtonText.value = '✅ Copied!'
-      // Hide password and button immediately after copying
+      // Hide password/key and button immediately after copying
-      const baseMessage = success.value.replace(/(?:Password|New password): .+/, 'Password copied to clipboard!')
+      const baseMessage = success.value.replace(/(?:Password|New password|Key): .+/, 'Copied to clipboard!')
       success.value = baseMessage
       // Hide the entire message after 3 seconds
       setTimeout(() => {

frontend/src/components/UserTokensModal.vue

@@ -0,0 +1,264 @@
+<template>
+  <ModalDialog name=tokens title="My API Tokens">
+    <div v-if="loading" class="loading">Loading...</div>
+    <div v-else>
+      <p class="hint">Create tokens to access Cista from scripts or other apps. Tokens are tied to your account.</p>
+
+      <!-- Creation form -->
+      <div v-if="mode === 'creating'" class="create-form">
+        <label for="token-name">Token name (optional)</label>
+        <input
+          id="token-name"
+          v-model="newTokenName"
+          type="text"
+          placeholder="e.g. backup-script"
+          @keyup.enter="submitCreate"
+          ref="nameInput"
+        />
+        <div class="form-actions">
+          <button @click="submitCreate" class="button primary" :disabled="creating">Create</button>
+          <button @click="cancelCreate" class="button">Cancel</button>
+        </div>
+      </div>
+
+      <!-- Creation result -->
+      <div v-else-if="mode === 'created' && createdToken" class="created-result">
+        <p class="success-title">✅ Token created</p>
+        <p class="hint">Copy this URL — it will not be shown again.</p>
+        <div class="url-box">
+          <code class="token-url">{{ createdToken.url }}</code>
+          <button @click="copyUrl" class="button small">{{ copyButtonText }}</button>
+        </div>
+        <p class="hint">Use it like: <code>curl {{ createdToken.url }}/...</code></p>
+        <div class="form-actions">
+          <button @click="finishCreate" class="button primary">Done</button>
+        </div>
+      </div>
+
+      <!-- Token list -->
+      <div v-else>
+        <button @click="startCreate" class="button" title="Add new token">➕ Add Token</button>
+        <table v-if="tokens.length">
+          <thead>
+            <tr>
+              <th>Name</th>
+              <th>Created</th>
+              <th>Actions</th>
+            </tr>
+          </thead>
+          <tbody>
+            <tr v-for="token in tokens" :key="token.id">
+              <td>{{ token.name || 'Unnamed' }}</td>
+              <td>{{ formatDate(token.created) }}</td>
+              <td>
+                <button @click="deleteTokenAction(token.id)" class="button small danger" title="Revoke token">🗑️</button>
+              </td>
+            </tr>
+          </tbody>
+        </table>
+        <p v-else class="empty">You have no API tokens.</p>
+      </div>
+
+      <div class="dialog-buttons">
+        <button @click="close" class="button">Close</button>
+      </div>
+    </div>
+  </ModalDialog>
+</template>
+
+<script lang="ts" setup>
+import { ref, watch, nextTick } from 'vue'
+import { listTokens, createToken, deleteToken } from '@/repositories/User'
+import type { ISimpleError } from '@/repositories/Client'
+import { useMainStore } from '@/stores/main'
+
+interface Token {
+  id: string
+  username: string
+  sso_user_id: string
+  name: string
+  created: number
+}
+
+interface CreatedToken extends Token {
+  key: string
+  url: string
+}
+
+const store = useMainStore()
+const loading = ref(true)
+const tokens = ref<Token[]>([])
+const mode = ref<'list' | 'creating' | 'created'>('list')
+const newTokenName = ref('')
+const creating = ref(false)
+const createdToken = ref<CreatedToken | null>(null)
+const copyButtonText = ref('📋')
+const nameInput = ref<HTMLInputElement | null>(null)
+
+const close = () => {
+  store.dialog = ''
+  resetCreate()
+}
+
+const resetCreate = () => {
+  mode.value = 'list'
+  newTokenName.value = ''
+  creating.value = false
+  createdToken.value = null
+  copyButtonText.value = '📋'
+}
+
+const loadTokens = async () => {
+  try {
+    loading.value = true
+    const data = await listTokens()
+    tokens.value = data.tokens
+  } catch (e) {
+    const httpError = e as ISimpleError
+    store.showToast(httpError.message || 'Failed to load tokens')
+  } finally {
+    loading.value = false
+  }
+}
+
+const startCreate = () => {
+  mode.value = 'creating'
+  nextTick(() => nameInput.value?.focus())
+}
+
+const cancelCreate = () => {
+  resetCreate()
+}
+
+const ensureFilesBaseUrl = (url: string) => {
+  const trimmed = url.replace(/\/+$/, '')
+  if (trimmed.endsWith('/files')) return trimmed
+  return `${trimmed}/files`
+}
+
+const submitCreate = async () => {
+  if (creating.value) return
+  creating.value = true
+  try {
+    const result = await createToken(newTokenName.value)
+    await loadTokens()
+    if (result.url) {
+      createdToken.value = {
+        ...(result as CreatedToken),
+        url: ensureFilesBaseUrl((result as CreatedToken).url),
+      }
+      mode.value = 'created'
+    }
+  } catch (e) {
+    const httpError = e as ISimpleError
+    store.showToast(httpError.message || 'Failed to create token')
+    mode.value = 'list'
+  } finally {
+    creating.value = false
+  }
+}
+
+const finishCreate = () => {
+  resetCreate()
+}
+
+const copyUrl = async () => {
+  if (!createdToken.value) return
+  await navigator.clipboard.writeText(createdToken.value.url)
+  copyButtonText.value = '✅ Copied!'
+  setTimeout(() => {
+    copyButtonText.value = '📋'
+  }, 2000)
+}
+
+const deleteTokenAction = async (tokenId: string) => {
+  if (!confirm('Revoke this token? It will no longer work.')) return
+  try {
+    await deleteToken(tokenId)
+    await loadTokens()
+  } catch (e) {
+    const httpError = e as ISimpleError
+    store.showToast(httpError.message || 'Failed to revoke token')
+  }
+}
+
+const formatDate = (ts: number) => {
+  if (!ts) return '—'
+  return new Date(ts * 1000).toLocaleString()
+}
+
+// Load tokens when dialog opens
+watch(() => store.dialog, (newVal) => {
+  if (newVal === 'tokens') {
+    resetCreate()
+    loadTokens()
+  }
+})
+</script>
+
+<style scoped>
+.hint {
+  color: #666;
+  font-size: 0.875rem;
+  margin-bottom: 1rem;
+}
+.empty {
+  color: #888;
+  font-style: italic;
+  margin: 1rem 0;
+}
+.create-form {
+  margin-bottom: 1rem;
+}
+.create-form label {
+  display: block;
+  margin-bottom: 0.25rem;
+  font-size: 0.875rem;
+  color: #444;
+}
+.create-form input {
+  width: 100%;
+  padding: 0.5rem;
+  font-size: 1rem;
+  border: 2px solid #888;
+  border-radius: 0.25rem;
+  background: #fff;
+  color: #000;
+  margin-bottom: 0.5rem;
+}
+.create-form input:focus {
+  outline: none;
+  border-color: #f80;
+}
+.form-actions {
+  display: flex;
+  gap: 0.5rem;
+}
+.created-result {
+  margin-bottom: 1rem;
+}
+.success-title {
+  color: #080;
+  font-weight: bold;
+  margin: 0 0 0.5rem 0;
+}
+.url-box {
+  display: flex;
+  gap: 0.5rem;
+  align-items: center;
+  background: #f0f0f0;
+  padding: 0.75rem;
+  border-radius: 0.25rem;
+  margin: 0.5rem 0;
+}
+.token-url {
+  flex: 1;
+  word-break: break-all;
+  font-size: 0.875rem;
+  color: #222;
+}
+.dialog-buttons {
+  margin-top: 1rem;
+  text-align: right;
+}
+</style>

frontend/src/repositories/User.ts

@@ -65,3 +65,20 @@ export async function getServerConfig() {
   const data = await Client.get('/api/config')
   return data as { name: string, public: boolean }
 }
+
+export const url_tokens = '/api/tokens'
+
+export async function listTokens() {
+  const data = await Client.get(url_tokens)
+  return data
+}
+
+export async function createToken(name: string) {
+  const data = await Client.post(url_tokens, { name })
+  return data
+}
+
+export async function deleteToken(tokenId: string) {
+  const data = await Client.delete(`${url_tokens}/${tokenId}`)
+  return data
+}

frontend/src/stores/main.ts

@@ -80,7 +80,7 @@ export const useMainStore = defineStore('main', {
     authInProgress: false,
     cursor: '' as string,
     server: {} as Record<string, any> & { public?: boolean, paskia?: boolean },
-    dialog: '' as '' | 'settings' | 'usermgmt' | 'accessdenied',
+    dialog: '' as '' | 'settings' | 'usermgmt' | 'accessdenied' | 'tokens',
     uprogress: {} as any,
     dprogress: {} as any,
     prefs: {

scripts/devserver.py

@@ -44,7 +44,9 @@ def setup_sanic_backend(
     port = opts.get("port", DEFAULT_BACKEND_PORT)
     host = opts.get("host", "localhost") or "localhost"
 
-    cmd = ["cista", "--dev", "-l", listen] + extra_args
+    # Use the current interpreter/module path so devserver always runs
+    # workspace source code instead of a potentially stale installed script.
+    cmd = [sys.executable, "-m", "cista", "--dev", "-l", listen] + extra_args
     return f"http://{host}:{port}", cmd
 
 

tests/test_files_auth.py

@@ -0,0 +1,207 @@
+import base64
+import hashlib
+import hmac
+import re
+import struct
+from pathlib import Path
+from time import time
+from uuid import uuid4
+
+import jwt
+import pytest
+import pytest_asyncio
+from sanic import Sanic
+
+from cista import auth, config, session, watching
+from cista.app import use_session
+from cista.fileserver import bp as fileserver_bp
+
+
+def _basic_auth(username: str, password: str) -> dict[str, str]:
+    creds = base64.b64encode(f"{username}:{password}".encode()).decode()
+    return {"Authorization": f"Basic {creds}"}
+
+
+def _ntlm_type1() -> dict[str, str]:
+    msg = b"NTLMSSP\x00" + struct.pack("<I", 1) + struct.pack("<I", 0x20080205)
+    return {"Authorization": f"NTLM {base64.b64encode(msg).decode()}"}
+
+
+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()
+
+    # 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"
+
+    # NT proof
+    nt_proof = hmac.new(ntlmv2_hash, challenge + blob, hashlib.md5).digest()
+    nt_response = nt_proof + blob
+
+    domain_enc = domain.encode("utf-16le")
+    username_enc = username.encode("utf-16le")
+    workstation_enc = b""
+
+    lm_response = b""  # Empty for NTLMv2
+
+    # Build Type 3 message
+    msg = bytearray()
+    msg.extend(b"NTLMSSP\x00")
+    msg.extend(struct.pack("<I", 3))
+
+    # Security buffers offsets will be calculated
+    payload_start = 64
+    payloads = []
+
+    def add_buf(data: bytes):
+        offset = payload_start + sum(len(p) for p in payloads)
+        payloads.append(data)
+        return struct.pack("<HHI", len(data), len(data), offset)
+
+    lm_buf = add_buf(lm_response)
+    nt_buf = add_buf(nt_response)
+    domain_buf = add_buf(domain_enc)
+    user_buf = add_buf(username_enc)
+    ws_buf = add_buf(workstation_enc)
+    session_buf = add_buf(b"")
+
+    msg.extend(lm_buf)
+    msg.extend(nt_buf)
+    msg.extend(domain_buf)
+    msg.extend(user_buf)
+    msg.extend(ws_buf)
+    msg.extend(session_buf)
+    msg.extend(struct.pack("<I", 0x20080205))
+    for p in payloads:
+        msg.extend(p)
+
+    return {"Authorization": f"NTLM {base64.b64encode(bytes(msg)).decode()}"}
+
+
+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",
+    )
+    return {"Cookie": f"s={token}"}
+
+
+@pytest.fixture()
+def setup_storage(tmp_path: Path):
+    user = config.User()
+    auth.set_password(user, "secret")
+    token = config.Token(key="test_token_123", username="alice")
+    config.config = config.Config(
+        path=tmp_path,
+        listen=":0",
+        public=False,
+        users={"alice": user},
+        tokens={"test_token_123": token},
+    )
+    watching.state.root = []
+    watching.rootpath = tmp_path
+    (tmp_path / "hello.txt").write_text("hello", encoding="utf-8")
+    yield tmp_path
+    watching.state.root = []
+
+
+@pytest_asyncio.fixture()
+async def client(setup_storage: Path):
+    app = Sanic(f"files-auth-test-{uuid4().hex}", strict_slashes=True)
+    app.router.ALLOWED_METHODS = (
+        *app.router.ALLOWED_METHODS,
+        "MKCOL",
+        "MOVE",
+        "COPY",
+        "PROPFIND",
+    )
+
+    @app.on_request
+    async def load_auth_context(request):
+        await use_session(request)
+
+    app.blueprint(fileserver_bp)
+    yield app.asgi_client
+
+
+@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"))
+
+    assert res.status_code == 200
+    assert res.body == b"hello"
+    assert "set-cookie" not in res.headers
+
+
+@pytest.mark.asyncio
+async def test_basic_auth_with_invalid_creds_falls_back_to_session_cookie(client):
+    _, res = await client.get(
+        "/files/hello.txt",
+        headers={**_basic_auth("alice", "wrong"), **_session_cookie_header("alice")},
+    )
+
+    assert res.status_code == 200
+
+
+@pytest.mark.asyncio
+async def test_options_unauthenticated_allowed(client):
+    _, res = await client.options("/files/")
+
+    assert res.status_code == 200
+
+
+@pytest.mark.asyncio
+async def test_unauthenticated_sends_no_auth_challenge(client):
+    _, res = await client.request("PROPFIND", "/files/")
+
+    assert res.status_code == 401
+    assert "www-authenticate" not in res.headers
+
+
+@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"))
+
+    assert res.status_code == 200
+    assert res.body == b"hello"
+
+
+@pytest.mark.asyncio
+async def test_browser_unauthenticated_sends_cookie_challenge(client):
+    _, 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")
+
+
+@pytest.mark.asyncio
+async def test_ntlm_auth_with_token(client):
+    # Step 1: request without auth should NOT advertise NTLM
+    # (we prefer clients use BASIC; NTLM still works if client initiates it)
+    _, res1 = await client.get("/files/hello.txt")
+    assert res1.status_code == 401
+    assert "ntlm" not in res1.headers.get("www-authenticate", "").lower()
+
+    # Step 2: client proactively sends Type 1, gets Type 2 challenge
+    _, res2 = await client.get("/files/hello.txt", headers=_ntlm_type1())
+    assert res2.status_code == 401
+    auth_hdr = res2.headers.get("www-authenticate", "")
+    assert auth_hdr.lower().startswith("ntlm ")
+    type2_data = base64.b64decode(auth_hdr.split(" ", 1)[1])
+    challenge = type2_data[24:32]
+
+    # Step 3: send Type 3 with token as password
+    _, res3 = await client.get(
+        "/files/hello.txt",
+        headers=_ntlm_type3("anyuser", "test_token_123", "WORKGROUP", challenge),
+    )
+    assert res3.status_code == 200
+    assert res3.body == b"hello"

tests/test_tokens.py

@@ -0,0 +1,192 @@
+from pathlib import Path
+from time import time
+from uuid import uuid4
+
+import os
+
+import pytest
+import pytest_asyncio
+from sanic import Sanic
+
+from cista import auth, config, watching
+from cista.auth import bp as auth_bp
+
+
+def _persist_config():
+    import msgspec
+    from pathlib import PurePath
+
+    def enc_hook(obj):
+        if isinstance(obj, PurePath):
+            return obj.as_posix()
+        raise TypeError
+
+    raw = msgspec.to_builtins(config.config, enc_hook=enc_hook)
+    config.conffile.write_bytes(msgspec.toml.encode(raw))
+
+
+@pytest.fixture()
+def setup_storage(tmp_path: Path):
+    os.environ["CISTA_HOME"] = str(tmp_path)
+    config.init_confdir()
+    user = config.User()
+    auth.set_password(user, "secret")
+    admin = config.User(privileged=True)
+    auth.set_password(admin, "secret")
+    config.config = config.Config(
+        path=tmp_path,
+        listen=":0",
+        public=False,
+        users={"alice": user, "admin": admin},
+    )
+    _persist_config()
+    watching.state.root = []
+    watching.rootpath = tmp_path
+    yield tmp_path
+    watching.state.root = []
+
+
+@pytest_asyncio.fixture()
+async def client(setup_storage: Path):
+    app = Sanic(f"token-test-{uuid4().hex}", strict_slashes=True)
+    app.router.ALLOWED_METHODS = (
+        *app.router.ALLOWED_METHODS,
+        "MKCOL",
+        "MOVE",
+        "COPY",
+        "PROPFIND",
+    )
+    app.blueprint(auth_bp)
+    yield app.asgi_client
+
+
+def _basic_auth(username: str, password: str) -> str:
+    return f"Basic {__import__('base64').b64encode(f'{username}:{password}'.encode()).decode()}"
+
+
+@pytest.mark.asyncio
+async def test_token_crud(client):
+    # Admin creates a token without specifying username (auto-assigned)
+    _, res = await client.post(
+        "/auth/tokens",
+        json={"name": "test"},
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+    data = res.json
+    assert "id" in data
+    assert "key" in data
+    assert data["username"] == "admin"
+    assert data["name"] == "test"
+    token_id = data["id"]
+    token_key = data["key"]
+
+    # List tokens - admin sees only their own
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+    tokens = res.json["tokens"]
+    assert len(tokens) == 1
+    assert tokens[0]["id"] == token_id
+    assert tokens[0]["username"] == "admin"
+
+    # Use token via Basic auth (token:<secret>)
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("token", token_key)},
+    )
+    assert res.status_code == 200
+
+    # Delete token
+    _, res = await client.delete(
+        f"/auth/tokens/{token_id}",
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+
+    # List should be empty
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+    assert len(res.json["tokens"]) == 0
+
+
+@pytest.mark.asyncio
+async def test_token_user_scoped(client):
+    # Alice creates a token for herself (no username specified)
+    _, res = await client.post(
+        "/auth/tokens",
+        json={"name": "alice-token"},
+        headers={"Authorization": _basic_auth("alice", "secret")},
+    )
+    assert res.status_code == 200
+    alice_token_id = res.json["id"]
+    alice_token_key = res.json["key"]
+
+    # Admin creates a token for themselves
+    _, res = await client.post(
+        "/auth/tokens",
+        json={"name": "admin-token"},
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+    admin_token_id = res.json["id"]
+
+    # Alice lists tokens - sees only her own
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("alice", "secret")},
+    )
+    assert res.status_code == 200
+    tokens = res.json["tokens"]
+    assert len(tokens) == 1
+    assert tokens[0]["id"] == alice_token_id
+    assert tokens[0]["username"] == "alice"
+
+    # Admin lists tokens - sees only their own
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("admin", "secret")},
+    )
+    assert res.status_code == 200
+    tokens = res.json["tokens"]
+    assert len(tokens) == 1
+    assert tokens[0]["id"] == admin_token_id
+    assert tokens[0]["username"] == "admin"
+
+    # Alice cannot create a token for admin
+    _, res = await client.post(
+        "/auth/tokens",
+        json={"username": "admin", "name": "impersonation"},
+        headers={"Authorization": _basic_auth("alice", "secret")},
+    )
+    assert res.status_code == 403
+
+    # Alice cannot delete admin's token
+    _, res = await client.delete(
+        f"/auth/tokens/{admin_token_id}",
+        headers={"Authorization": _basic_auth("alice", "secret")},
+    )
+    assert res.status_code == 403
+
+    # Alice can delete her own token
+    _, res = await client.delete(
+        f"/auth/tokens/{alice_token_id}",
+        headers={"Authorization": _basic_auth("alice", "secret")},
+    )
+    assert res.status_code == 200
+
+    # Alice's token auth still works until deletion is processed
+    # Verify token auth worked during the test
+    _, res = await client.get(
+        "/auth/tokens",
+        headers={"Authorization": _basic_auth("token", alice_token_key)},
+    )
+    # Token was deleted above, so this should now be unauthenticated
+    # Actually the token key lookup will fail, and since there's no session fallback...
+    # With auth header present but invalid, it should return 401
+    assert res.status_code == 401