capabilities: the dock a member sees, and the screen the owner grants from

useCapabilities is the frontend's view of the model and explicitly NOT its
enforcement — hiding a dock icon is a courtesy, the 403 in origin-validation
is the lock. so it fails OPEN: if the request errors the full dock renders.
a member clicking through to a 403 is a bad minute; an owner locked out of
their own platform by a transient network error is an incident, and the
server refuses what it should refuse either way.

the endpoint returns held routes AND denied routes, because absence from the
held list cannot distinguish a route this account lacks from one no
capability claims at all — `/`, the settings shell — and a guard that cannot
tell those apart either blanks the app or guards nothing. i wrote the first
version without the second list and it silently permitted everything.

`can` and `canVisit` are memoised on the query data. a verb rebuilt every
render gets a new identity every render, which is how every playback report
in the jellyfin player was disabled for days; the dock filter puts one in a
useMemo dependency list, so it would have been the same bug.

the permissions screen is one role at a time, with an explicit save and a
dirty state, rather than a roles-by-capabilities grid — a grid invites
reading across rows, which is not a question anyone has, and makes revoking
gitea for every member one click among fifty. it also states plainly why
terminal, chat, files and the rest are absent, so their absence reads as a
decision rather than as a missing feature.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
This commit is contained in:
2026-08-07 01:00:47 +00:00
co-authored by Claude Opus 5
parent 7700e8b540
commit 537a77d320
4 changed files with 276 additions and 3 deletions
@@ -1,5 +1,6 @@
import { useRef } from 'react';
import { useMemo, useRef } from 'react';
import { useDock, MusicPlayerHost } from 'officerdev';
import { useCapabilities } from 'hooks/useCapabilities';
import { Background } from './Background';
import { Header } from './Header';
import { Dock, ALL_DOCK_ITEMS, DEFAULT_DOCK_PATHS } from './Dock';
@@ -10,7 +11,13 @@ type DashboardLayoutProps = {
children?: React.ReactNode;
};
export function DashboardLayout({ children }: DashboardLayoutProps) {
const { items: visibleItems } = useDock(ALL_DOCK_ITEMS, DEFAULT_DOCK_PATHS);
const { canVisit } = useCapabilities();
// Filtered BEFORE useDock, so a member's saved dock order cannot resurrect an icon their role no longer
// reaches, and so the pinned-item defaults fall back to something they can actually open. Cosmetic
// either way — every one of these routes is refused server-side too — but an app that offers a door it
// will then slam is worse than one that never showed it.
const permitted = useMemo(() => ALL_DOCK_ITEMS.filter((item) => canVisit(item.to)), [canVisit]);
const { items: visibleItems } = useDock(permitted, DEFAULT_DOCK_PATHS);
const isTouch = useIsTouch();
usePageTitleSync();
// The content region shrinks when the (in-flow) music dock takes its space; the nav dock measures its
@@ -0,0 +1,170 @@
import { useEffect, useMemo, useState } from 'react';
import { useQuery, useQueryClient } from '@tanstack/react-query';
import { toast } from 'sonner';
import { Loader2, Lock } from 'lucide-react';
import { useClient } from 'hooks/useClient';
import { CAPABILITIES_QUERY_KEY } from 'hooks/useCapabilities';
import { Button } from '@/components/ui/button';
import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@/components/ui/select';
// What each ROLE may reach. Not each user — see the table comment in schema/capabilities.ts for why.
//
// The screen is one role at a time on purpose. A grid of every role against every capability is the
// obvious design and it is the wrong one: it invites reading across rows, which is not a question anyone
// has, and it makes the destructive action ("uncheck Gitea for Members") a single click among fifty. One
// role, an explicit Save, and a visible dirty state instead.
type CapabilityInfo = {
key: string;
label: string;
description: string;
routes: string[];
hasPersonalWrites: boolean;
};
type Grant = { role: string; capability: string; level: 'read' | 'write' };
type CapabilitiesResponse = {
capabilities: CapabilityInfo[];
roles: string[];
grants: Grant[];
};
type Level = 'none' | 'read' | 'write';
const PERMISSIONS_KEY = ['ROLE_CAPABILITIES'];
export const PermissionsSection = () => {
const client = useClient();
const queryClient = useQueryClient();
const [role, setRole] = useState<string | null>(null);
const [draft, setDraft] = useState<Record<string, Level>>({});
const [saving, setSaving] = useState(false);
const { data, isLoading, isError } = useQuery<CapabilitiesResponse>({
queryKey: PERMISSIONS_KEY,
queryFn: () => client.get<CapabilitiesResponse>('/users/capabilities'),
});
const activeRole = role ?? data?.roles[0] ?? null;
// What the server currently says, for this role. The comparison baseline for the dirty state below.
const saved = useMemo(() => {
const levels: Record<string, Level> = {};
for (const capability of data?.capabilities ?? []) levels[capability.key] = 'none';
for (const grant of data?.grants ?? []) {
if (grant.role === activeRole) levels[grant.capability] = grant.level;
}
return levels;
}, [data, activeRole]);
// Reset the draft whenever the role changes or the server answer arrives, so switching roles never
// carries an unsaved edit across to a role it was not meant for.
useEffect(() => setDraft(saved), [saved]);
const dirty = useMemo(() => Object.keys(saved).some((key) => (draft[key] ?? 'none') !== saved[key]), [draft, saved]);
const save = async () => {
if (!activeRole) return;
setSaving(true);
try {
const grants = Object.entries(draft)
.filter(([, level]) => level !== 'none')
.map(([capability, level]) => ({ capability, level }));
await client.put(`/users/capabilities/${encodeURIComponent(activeRole)}`, { grants });
await queryClient.invalidateQueries({ queryKey: PERMISSIONS_KEY });
// The owner may be editing their own view's inputs — and anyone already signed in needs the dock to
// catch up without a reload.
await queryClient.invalidateQueries({ queryKey: CAPABILITIES_QUERY_KEY });
toast.success(`Saved what ${activeRole}s can reach`);
} catch (ex) {
toast.error(ex instanceof Error ? ex.message : 'Could not save');
} finally {
setSaving(false);
}
};
if (isLoading) {
return (
<div className="flex items-center gap-2 p-6 text-sm text-muted-foreground">
<Loader2 className="h-4 w-4 animate-spin" /> Loading capabilities
</div>
);
}
if (isError || !data) {
return <div className="p-6 text-sm text-destructive">Could not load capabilities.</div>;
}
return (
<div className="flex flex-col gap-5 p-1">
<div className="flex flex-wrap items-center justify-between gap-3">
<div className="flex items-center gap-3">
<span className="text-sm text-muted-foreground">Role</span>
<Select value={activeRole ?? undefined} onValueChange={(value) => setRole(value)}>
<SelectTrigger className="w-44">
<SelectValue />
</SelectTrigger>
<SelectContent>
{data.roles.map((r) => (
<SelectItem key={r} value={r}>
{r}
</SelectItem>
))}
</SelectContent>
</Select>
</div>
<Button onClick={save} disabled={!dirty || saving}>
{saving && <Loader2 className="mr-2 h-4 w-4 animate-spin" />}
{dirty ? 'Save changes' : 'Saved'}
</Button>
</div>
<p className="text-xs text-muted-foreground">
Everything is denied unless granted here. <strong>Read</strong> allows viewing, plus changes to things that are
only ever the person&rsquo;s own their favourites, their playlists, their devices.
<strong> Full</strong> allows everything within the app.
</p>
<div className="divide-y rounded-lg border">
{data.capabilities.map((capability) => {
const level = draft[capability.key] ?? 'none';
return (
<div key={capability.key} className="flex items-center justify-between gap-4 p-3">
<div className="min-w-0">
<div className="text-sm font-medium">{capability.label}</div>
<div className="text-xs text-muted-foreground">{capability.description}</div>
</div>
<Select
value={level}
onValueChange={(value) => setDraft((prev) => ({ ...prev, [capability.key]: value as Level }))}
>
<SelectTrigger className="w-32 shrink-0">
<SelectValue />
</SelectTrigger>
<SelectContent>
<SelectItem value="none">No access</SelectItem>
<SelectItem value="read">Read</SelectItem>
<SelectItem value="write">Full</SelectItem>
</SelectContent>
</Select>
</div>
);
})}
</div>
{/* Stated rather than silently omitted. An owner who cannot find the Terminal checkbox will assume
the screen is incomplete and go looking for it; saying why it does not exist is the difference
between a deliberate design and a missing feature. */}
<div className="flex gap-3 rounded-lg border border-dashed p-3 text-xs text-muted-foreground">
<Lock className="mt-0.5 h-4 w-4 shrink-0" />
<div>
<div className="font-medium text-foreground">Not listed, and not grantable</div>
The terminal, chat, tasks, files, the code editor, the desktop and the browser all run as the server owner, in
the server owner&rsquo;s home directory, with full permissions. Granting one of them would hand over the
machine rather than a feature, so there is no level at which they can be shared. The wallet, Headscale and the
server settings stay with the owner for the same reason.
</div>
</div>
</div>
);
};
@@ -1,9 +1,10 @@
import { useMemo } from 'react';
import { Users, UserCog } from 'lucide-react';
import { Users, UserCog, ShieldCheck } from 'lucide-react';
import type { LayoutNode, PanelComponents } from 'officerdev';
import { WorkspaceLayout } from 'officerdev';
import { createSettingsPanelComponents, type SettingsSection } from '../SettingsPanel';
import { UsersSection } from './UsersSection';
import { PermissionsSection } from './PermissionsSection';
// Owner-only. Every endpoint behind this screen is gated by ownerGate in users-router.ts, and the
// global backstop already confines a non-owner token to /api/auth + /api/music — so a Member reaching
@@ -18,6 +19,13 @@ const sections: SettingsSection[] = [
description: 'Who has access, and as what',
content: <UsersSection />,
},
{
key: 'permissions',
icon: ShieldCheck,
title: 'Permissions',
description: 'What each role can reach',
content: <PermissionsSection />,
},
];
const { Sidebar, Content } = createSettingsPanelComponents({
@@ -0,0 +1,88 @@
import { useCallback, useMemo } from 'react';
import { useQuery } from '@tanstack/react-query';
import { useClient } from './useClient';
// What the signed-in account may reach, as the frontend sees it.
//
// THIS IS NOT ACCESS CONTROL. Every answer here is a courtesy: it stops the app offering a member a
// Terminal icon that would 403, and stops a screen mounting a panel whose every request will fail. The
// lock is server-side, in origin-validation's capability backstop and the websocket gate — both of which
// hold regardless of what this hook returns, including when it returns nothing because the request failed.
//
// Which is why the failure mode below is deliberately generous rather than restrictive: if this request
// errors we show the full dock rather than an empty one. A member clicking through to a 403 is a bad
// minute; an owner locked out of their own platform by a transient network error is an incident. The
// server refuses what it should refuse either way.
export type CapabilityLevel = 'read' | 'write';
export type SelfCapabilities = {
isOwner: boolean;
capabilities: { key: string; level: CapabilityLevel }[];
/** Frontend route prefixes the account holds, flattened across its capabilities. */
routes: string[];
/**
* Route prefixes claimed by capabilities the account does NOT hold. Both lists are needed: absence from
* `routes` cannot tell a denied route from one no capability claims (`/`, the settings shell), and a
* guard that cannot tell those apart either blanks the app or guards nothing.
*/
deniedRoutes: string[];
};
export const CAPABILITIES_QUERY_KEY = ['self-capabilities'];
export function useCapabilities() {
const client = useClient();
const { data, isLoading, isError } = useQuery<SelfCapabilities>({
queryKey: CAPABILITIES_QUERY_KEY,
queryFn: () => client.get<SelfCapabilities>('/user/capabilities'),
// Grants change rarely and only by an owner action, but they change the shape of the whole app when
// they do. A minute matches the `tasks` / `task-categories` caches the rest of the app uses.
staleTime: 60_000,
});
const held = useMemo(() => new Map((data?.capabilities ?? []).map((c) => [c.key, c.level])), [data]);
// `can` and `canVisit` are memoised on `data` alone, and that matters more than it looks. A verb rebuilt
// every render gets a new identity every render, so anything putting one in a useCallback or useMemo
// dependency list silently recomputes forever — which is exactly how every playback report in the
// Jellyfin player was disabled for days by an unmount cleanup re-running mid-playback. `data` is a React
// Query value with a stable reference between fetches, so these change only when the answer does.
/** Whether the account holds a capability, optionally at write level. */
const can = useCallback(
(key: string, level: CapabilityLevel = 'read'): boolean => {
if (!data) return true; // see the note above: fail open, the server does not
if (data.isOwner) return true;
const granted = held.get(key);
if (!granted) return false;
return level === 'read' || granted === 'write';
},
[data, held],
);
/**
* Whether a frontend route is reachable. Only routes a capability actually claims are ever denied —
* `/`, the settings shell and anything else unclaimed stays open, because denying by default here would
* blank the app for everyone rather than restrict it for anyone.
*/
const canVisit = useCallback(
(path: string): boolean => {
if (!data) return true;
if (data.isOwner) return true;
return !data.deniedRoutes.some((route) => path === route || path.startsWith(`${route}/`));
},
[data],
);
return {
isOwner: data?.isOwner ?? false,
capabilities: held,
routes: data?.routes ?? [],
isLoading,
isError,
can,
canVisit,
};
}