Files
nxdns/web/src/features/settings/SettingsPage.tsx
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356 lines
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TypeScript

import { useState, type FormEvent } from "react";
import { useMutation, useQueryClient, useSuspenseQuery } from "@tanstack/react-query";
import InlineError from "@/lib/InlineError";
import { settingsPutMutation, settingsQuery } from "@/lib/queries";
import { buildSettingsPatch } from "@/lib/settingsDiff";
import type { Settings, SettingsPatch } from "@/lib/types";
import { raiseRestartBanner } from "./restartBanner";
import { READ_ONLY_HINT, useReadOnlyConfig } from "./authority";
import { focusRing } from "@/ui/classes";
/** True when the patch touches anything besides the write-only `web.password` (ruling 11). */
export function patchRequiresRestart(patch: SettingsPatch): boolean {
return Object.entries(patch).some(([section, fields]) =>
Object.keys(fields ?? {}).some((key) => !(section === "web" && key === "password")),
);
}
interface FieldDef<S extends keyof Settings> {
key: keyof Settings[S] & string;
kind: "number" | "text" | "boolean" | readonly string[];
}
interface SectionDef<S extends keyof Settings> {
section: S;
title: string;
fields: readonly FieldDef<S>[];
}
/** Binds each section's field keys to that section's Settings type at definition. */
function defineSection<S extends keyof Settings>(def: SectionDef<S>): SectionDef<S> {
return def;
}
/** The registry read back as a heterogeneous list, once the per-section binding has been proven. */
type AnyFieldDef = { [S in keyof Settings]: FieldDef<S> }[keyof Settings];
type AnySectionDef = { [S in keyof Settings]: SectionDef<S> }[keyof Settings];
/**
* A section's values as a string-keyed view. The keys are proven against
* `Settings[S]` where each section is defined; iterating the heterogeneous
* registry loses that correlation, so consumption widens here in one place.
*/
function sectionValues(settings: Settings, section: keyof Settings): Record<string, unknown> {
return settings[section] as Record<string, unknown>;
}
const TLS_FIELDS: readonly FieldDef<"doh_server" | "dot_server">[] = [
{ key: "enabled", kind: "boolean" },
{ key: "bind", kind: "text" },
{ key: "port", kind: "number" },
{ key: "cert_path", kind: "text" },
{ key: "key_path", kind: "text" },
];
const SECTIONS: readonly AnySectionDef[] = [
defineSection({
section: "upstream",
title: "Upstream",
fields: [
{ key: "attempt_timeout_ms", kind: "number" },
{ key: "read_timeout_ms", kind: "number" },
{ key: "total_timeout_ms", kind: "number" },
],
}),
defineSection({
section: "dns",
title: "DNS",
fields: [
{ key: "bind_ipv4", kind: "text" },
{ key: "bind_ipv6", kind: "text" },
{ key: "port", kind: "number" },
{ key: "rate_limit", kind: "number" },
{ key: "rate_window_seconds", kind: "number" },
],
}),
defineSection({
section: "blocking",
title: "Blocking",
fields: [
{ key: "response", kind: ["zero", "nxdomain"] },
{ key: "ttl", kind: "number" },
],
}),
defineSection({
section: "cache",
title: "Cache",
fields: [
{ key: "size", kind: "number" },
{ key: "negative_ttl_max", kind: "number" },
],
}),
defineSection({
section: "web",
title: "Web",
fields: [
{ key: "enabled", kind: "boolean" },
{ key: "bind", kind: "text" },
{ key: "port", kind: "number" },
{ key: "session_ttl_hours", kind: "number" },
{ key: "api_rate_limit_per_min", kind: "number" },
{ key: "api_localhost_exempt", kind: "boolean" },
{ key: "sse_max_connections_per_ip", kind: "number" },
{ key: "trusted_proxies", kind: "text" },
],
}),
defineSection({ section: "doh_server", title: "DoH Server", fields: TLS_FIELDS }),
defineSection({ section: "dot_server", title: "DoT Server", fields: TLS_FIELDS }),
defineSection({ section: "edns", title: "EDNS", fields: [{ key: "ecs_mode", kind: ["strip", "forward"] }] }),
defineSection({
section: "logging",
title: "Logging",
fields: [
{ key: "level", kind: ["error", "warn", "info", "debug"] },
{ key: "retention_days", kind: "number" },
{ key: "query_log_buffer_max", kind: "number" },
{ key: "hide_domains", kind: "boolean" },
{ key: "hide_client_ips", kind: "boolean" },
{ key: "output", kind: ["stderr", "syslog", "file"] },
{ key: "file_path", kind: "text" },
{ key: "max_size_mb", kind: "number" },
{ key: "max_files", kind: "number" },
],
}),
defineSection({
section: "disk",
title: "Disk",
fields: [
{ key: "min_free_mb", kind: "number" },
{ key: "warn_free_mb", kind: "number" },
],
}),
defineSection({
section: "blocklist_update",
title: "Blocklist Update",
fields: [
{ key: "enabled", kind: "boolean" },
{ key: "interval_hours", kind: "number" },
],
}),
];
const LABEL_CLASS = "text-sm text-zinc-700 dark:text-zinc-300";
const fieldInputClass = `rounded border border-zinc-300 bg-white px-2 py-1 text-sm ${focusRing} dark:border-zinc-700 dark:bg-zinc-900`;
function FieldRow({
section,
def,
value,
onChange,
}: {
section: string;
def: AnyFieldDef;
value: unknown;
onChange: (value: unknown) => void;
}) {
const id = `${section}.${def.key}`;
if (def.kind === "boolean") {
return (
<div className="flex items-center gap-2">
<input
id={id}
type="checkbox"
checked={value as boolean}
onChange={(e) => onChange(e.target.checked)}
className={focusRing}
/>
<label htmlFor={id} className={LABEL_CLASS}>
{def.key}
</label>
</div>
);
}
if (Array.isArray(def.kind)) {
return (
<div className="flex flex-col gap-1">
<label htmlFor={id} className={LABEL_CLASS}>
{def.key}
</label>
<select
id={id}
value={value as string}
onChange={(e) => onChange(e.target.value)}
className={fieldInputClass}
>
{def.kind.map((option) => (
<option key={option} value={option}>
{option}
</option>
))}
</select>
</div>
);
}
if (def.kind === "number") {
const numeric = value as number;
return (
<div className="flex flex-col gap-1">
<label htmlFor={id} className={LABEL_CLASS}>
{def.key}
</label>
<input
id={id}
type="number"
value={Number.isNaN(numeric) ? "" : numeric}
onChange={(e) => onChange(e.target.valueAsNumber)}
className={fieldInputClass}
/>
</div>
);
}
return (
<div className="flex flex-col gap-1">
<label htmlFor={id} className={LABEL_CLASS}>
{def.key}
</label>
<input
id={id}
type="text"
value={value as string}
onChange={(e) => onChange(e.target.value)}
className={fieldInputClass}
/>
</div>
);
}
export default function SettingsPage() {
const { data } = useSuspenseQuery(settingsQuery());
const queryClient = useQueryClient();
const mutation = useMutation(settingsPutMutation(queryClient));
// Frozen at mount and re-frozen on save: diffing against live query data would
// turn a background refetch's out-of-band changes into phantom user edits.
const [baseline, setBaseline] = useState<Settings>(() => structuredClone(data.settings));
const [edited, setEdited] = useState<Settings>(() => structuredClone(data.settings));
const [password, setPassword] = useState("");
const [confirm, setConfirm] = useState("");
const passwordsMismatch = (password !== "" || confirm !== "") && password !== confirm;
const hasInvalidNumber = SECTIONS.some(({ section, fields }) => {
const values = sectionValues(edited, section);
return (fields as readonly AnyFieldDef[]).some(
(field) => field.kind === "number" && Number.isNaN(values[field.key]),
);
});
const patch = buildSettingsPatch(baseline, edited, password === "" ? undefined : password);
const readOnly = useReadOnlyConfig();
const saveDisabled = patch === null || passwordsMismatch || hasInvalidNumber || mutation.isPending || readOnly;
function setField(section: keyof Settings, key: string, value: unknown): void {
setEdited((prev) => ({
...prev,
[section]: { ...sectionValues(prev, section), [key]: value },
}));
}
function handleSubmit(event: FormEvent): void {
event.preventDefault();
if (patch === null || passwordsMismatch || hasInvalidNumber) return;
const restartNeeded = patchRequiresRestart(patch);
mutation.mutate(patch, {
onSuccess: (envelope) => {
setBaseline(structuredClone(envelope.settings));
setEdited(structuredClone(envelope.settings));
setPassword("");
setConfirm("");
if (restartNeeded) raiseRestartBanner();
},
});
}
return (
<section>
<h1 className="text-2xl font-semibold">Settings</h1>
<p className="mt-1 text-sm text-zinc-500">
Changes are validated as a whole; every setting requires a restart to take effect.
</p>
<form onSubmit={handleSubmit} className="mt-4 max-w-3xl">
<fieldset disabled={mutation.isPending || readOnly} className="space-y-6">
{SECTIONS.map(({ section, title, fields }) => (
<fieldset key={section} className="rounded border border-zinc-200 p-4 dark:border-zinc-800">
<legend className="px-1 text-sm font-semibold">{title}</legend>
<div className="grid gap-3 sm:grid-cols-2">
{(fields as readonly AnyFieldDef[]).map((def) => (
<FieldRow
key={def.key}
section={section}
def={def}
value={sectionValues(edited, section)[def.key]}
onChange={(value) => setField(section, def.key, value)}
/>
))}
{section === "web" && (
<>
<p className={LABEL_CLASS}>
auth_enabled: {data.settings.web.auth_enabled ? "true" : "false"}{" "}
<span className="text-zinc-500">(derived, read-only)</span>
</p>
<div className="flex flex-col gap-1">
<label htmlFor="web.password" className={LABEL_CLASS}>
password
</label>
<input
id="web.password"
type="password"
autoComplete="new-password"
value={password}
onChange={(e) => setPassword(e.target.value)}
className={fieldInputClass}
/>
</div>
<div className="flex flex-col gap-1">
<label htmlFor="web.password_confirm" className={LABEL_CLASS}>
confirm password
</label>
<input
id="web.password_confirm"
type="password"
autoComplete="new-password"
value={confirm}
onChange={(e) => setConfirm(e.target.value)}
className={fieldInputClass}
/>
</div>
{password !== "" && (
<p className="text-sm text-amber-700 sm:col-span-2 dark:text-amber-400">
Changing the password signs out every session; you will be asked to log
in again.
</p>
)}
{passwordsMismatch && (
<p className="text-sm text-red-700 sm:col-span-2 dark:text-red-400">
Passwords do not match.
</p>
)}
</>
)}
</div>
</fieldset>
))}
<div className="flex items-center gap-3">
<button
type="submit"
disabled={saveDisabled}
title={readOnly ? READ_ONLY_HINT : undefined}
className={`rounded bg-blue-600 px-4 py-1.5 text-sm font-medium text-white ${focusRing} disabled:bg-zinc-300 disabled:text-zinc-500 dark:disabled:bg-zinc-800`}
>
{mutation.isPending ? "Saving…" : "Save"}
</button>
{mutation.isError && <InlineError error={mutation.error} />}
</div>
</fieldset>
</form>
</section>
);
}