Add resilient dual-radio network failover

This commit is contained in:
2026-07-31 20:24:34 +02:00
parent 0a0dae144c
commit 6940cfb3a8
19 changed files with 857 additions and 11 deletions
+10
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@@ -8,6 +8,16 @@ COOKIE_SECURE=false
ALLOWED_ORIGINS=http://mg4pi.local:8787
UPDATE_STATUS_PATH=/var/lib/pi-car-companion/update-status.json
VERSION_FILE=/opt/pi-car-companion/current/REVISION
# Disabled until `sudo pi-car-companion-network-setup` creates the recovery hotspot.
NETWORK_MANAGER_ENABLED=false
NETWORK_STATUS_PATH=/var/lib/pi-car-companion/network-status.json
NETWORK_COMMAND_PATH=/var/lib/pi-car-companion/network-command.json
NETWORK_HOTSPOT_INTERFACE=wlan0
NETWORK_UPSTREAM_INTERFACE=wlan1
NETWORK_HOTSPOT_CONNECTION=pi-car-hotspot
NETWORK_PROBE_TIMEOUT_SECONDS=60
NETWORK_STABILITY_SECONDS=10
NETWORK_POLL_SECONDS=5
# Disabled by default. Leave ADB_SERIAL empty to auto-select only when exactly one device is attached.
ADB_ENABLED=false
ADB_PATH=adb
+2 -1
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@@ -49,6 +49,7 @@ Core operation must work without cloud access. Optional remote access is a later
- Controlled artifact upload, listing, download, and deletion
- SHA-256 metadata and storage quota reporting
- Wi-Fi status/reconnect where supported by the host
- Dual-radio car hotspot with USB-upstream preference, 60-second built-in fallback, and automatic offline recovery
- Log rotation/pruning job
- Companion service restart job
- Reboot and shutdown actions with strong confirmation
@@ -321,7 +322,7 @@ The repository contains a working MVP and tracks remaining delivery work here. S
### Milestone 5 — Artifacts and operational actions
- [ ] Implement controlled uploads/downloads/deletion, hashing, quotas, and metadata UI.
- [ ] Add Wi-Fi refresh/reconnect with capability detection.
- [~] Add Wi-Fi refresh/reconnect with capability detection. A disabled-by-default dual-radio NetworkManager controller, 60-second recovery watchdog, fixed dashboard actions, and status UI are implemented; destructive failover and unplug/replug behavior still require staged Pi and MG4 validation.
- [ ] Add log pruning and companion-service restart jobs.
- [ ] Add reboot and shutdown with explicit action-bound confirmation and narrowly scoped privilege configuration.
- [ ] Exercise storage exhaustion, job timeout, service restart, and network-loss recovery.
+32
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@@ -16,6 +16,7 @@ The current MVP slice includes:
- a responsive 1920×720-oriented setup, login, and dashboard UI;
- an idempotent Raspberry Pi installer with systemd start-on-boot support;
- atomic, dashboard-triggered Git updates with automatic verification and rollback safety;
- optional dual-radio Wi-Fi failover with an always-recoverable offline car hotspot;
- automated API security tests and reproducible quality commands.
The ADB transport, job UI, artifacts, Android companion, and remaining operations work are tracked in [PLAN.md](./PLAN.md).
@@ -153,6 +154,37 @@ Important values:
- `ADB_ENABLED`: enables the read-only head-unit collector; defaults to `false`
- `ADB_SERIAL`: optional exact serial; when empty, discovery requires exactly one attached device
- `ADB_PATH` and `ADB_TIMEOUT_MS`: executable path and per-command timeout
- `NETWORK_MANAGER_ENABLED`: enables the separately supervised NetworkManager controller after explicit setup
- `NETWORK_STATUS_PATH` and `NETWORK_COMMAND_PATH`: validated state and fixed-action request files
- `NETWORK_HOTSPOT_INTERFACE` / `NETWORK_UPSTREAM_INTERFACE`: default to built-in `wlan0` and USB `wlan1`
- `NETWORK_PROBE_TIMEOUT_SECONDS`: maximum built-in upstream attempt before restoring the offline hotspot
### Dual-radio car network
The optional network controller prefers a USB Wi-Fi adapter for upstream internet and keeps the built-in adapter on a stable car hotspot. If the USB adapter disappears, the built-in adapter tries its saved upstream profiles for 60 seconds. When none connect, the controller restores the offline hotspot at `http://10.42.0.1:8787`.
Automatic switching is disabled by default so installation cannot interrupt an existing SSH connection. First connect the USB adapter to a saved upstream profile:
```bash
sudo nmcli --ask device wifi connect "HOME_SSID" ifname wlan1 name upstream-home
```
Then create the recovery hotspot and enable its controller:
```bash
sudo pi-car-companion-network-setup
```
The helper requires `wlan1` to be connected before it enables switching, asks interactively for a unique hotspot password, and never places that password in the application configuration. Settings then shows the current mode and offers **Try upstream again** and **Restore hotspot** controls.
Behavior by mode:
- `wlan1` connected: `wlan0` hosts `MG4-Companion` and shares upstream access.
- `wlan1` unavailable: `wlan0` becomes upstream when a saved network connects.
- no upstream after 60 seconds: `wlan0` returns to the offline hotspot automatically.
- `wlan1` returns: it must connect and remain stable before `wlan0` returns to hotspot mode.
Add phone hotspots as additional saved `wlan1` profiles. Dashboard actions only select existing NetworkManager profiles; Wi-Fi credentials are not accepted through the API.
### Read-only ADB setup
+32 -1
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@@ -38,7 +38,7 @@ fi
echo "[1/7] Installing operating-system packages"
export DEBIAN_FRONTEND=noninteractive
apt-get update
apt-get install -y ca-certificates curl gnupg git rsync sudo util-linux avahi-daemon sqlite3 android-tools-adb build-essential
apt-get install -y ca-certificates curl gnupg git rsync sudo util-linux avahi-daemon sqlite3 android-tools-adb build-essential network-manager
node_major=""
if command -v node >/dev/null 2>&1; then
@@ -111,8 +111,10 @@ mv -Tf "${INSTALL_ROOT}/current.next" "${CURRENT}"
echo "[5/7] Installing system services"
install -m 0755 "${SCRIPT_DIR}/scripts/pi-car-companion-update" /usr/local/sbin/pi-car-companion-update
install -m 0755 "${SCRIPT_DIR}/scripts/pi-car-companion-network-setup" /usr/local/sbin/pi-car-companion-network-setup
install -m 0644 "${SCRIPT_DIR}/systemd/pi-car-companion.service" /etc/systemd/system/pi-car-companion.service
install -m 0644 "${SCRIPT_DIR}/systemd/pi-car-companion-update.service" /etc/systemd/system/pi-car-companion-update.service
install -m 0644 "${SCRIPT_DIR}/systemd/pi-car-companion-network.service" /etc/systemd/system/pi-car-companion-network.service
install -m 0440 "${SCRIPT_DIR}/systemd/pi-car-companion.sudoers" /etc/sudoers.d/pi-car-companion
visudo -cf /etc/sudoers.d/pi-car-companion >/dev/null
install -d -m 0755 /etc/avahi/services
@@ -133,8 +135,34 @@ ADB_ENABLED=false
ADB_PATH=adb
ADB_SERIAL=
ADB_TIMEOUT_MS=3000
NETWORK_MANAGER_ENABLED=false
NETWORK_STATUS_PATH=${DATA_DIR}/network-status.json
NETWORK_COMMAND_PATH=${DATA_DIR}/network-command.json
NETWORK_HOTSPOT_INTERFACE=wlan0
NETWORK_UPSTREAM_INTERFACE=wlan1
NETWORK_HOTSPOT_CONNECTION=pi-car-hotspot
NETWORK_PROBE_TIMEOUT_SECONDS=60
NETWORK_STABILITY_SECONDS=10
NETWORK_POLL_SECONDS=5
EOF
fi
ensure_env_default() {
local key="$1"
local value="$2"
if ! grep -q "^${key}=" "${CONFIG_DIR}/companion.env"; then
printf '%s=%s\n' "${key}" "${value}" >> "${CONFIG_DIR}/companion.env"
fi
}
ensure_env_default NETWORK_MANAGER_ENABLED false
ensure_env_default NETWORK_STATUS_PATH "${DATA_DIR}/network-status.json"
ensure_env_default NETWORK_COMMAND_PATH "${DATA_DIR}/network-command.json"
ensure_env_default NETWORK_HOTSPOT_INTERFACE wlan0
ensure_env_default NETWORK_UPSTREAM_INTERFACE wlan1
ensure_env_default NETWORK_HOTSPOT_CONNECTION pi-car-hotspot
ensure_env_default NETWORK_PROBE_TIMEOUT_SECONDS 60
ensure_env_default NETWORK_STABILITY_SECONDS 10
ensure_env_default NETWORK_POLL_SECONDS 5
chown root:"${SERVICE_USER}" "${CONFIG_DIR}/companion.env"
chmod 0640 "${CONFIG_DIR}/companion.env"
@@ -148,6 +176,9 @@ echo "[6/7] Enabling start-on-boot services"
systemctl daemon-reload
systemctl enable --now avahi-daemon
systemctl enable pi-car-companion.service
if grep -qx 'NETWORK_MANAGER_ENABLED=true' "${CONFIG_DIR}/companion.env"; then
systemctl enable --now pi-car-companion-network.service
fi
systemctl restart pi-car-companion.service
echo "[7/7] Verifying the service"
+1 -1
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@@ -16,7 +16,7 @@
"typecheck": "npm run typecheck --workspaces --if-present",
"test": "npm run test --workspaces --if-present",
"build": "npm run build --workspaces --if-present",
"check:scripts": "bash -n install.sh scripts/pi-car-companion-update",
"check:scripts": "bash -n install.sh scripts/pi-car-companion-update scripts/pi-car-companion-network-setup",
"check": "npm run check:scripts && npm run lint && npm run typecheck && npm test && npm run build"
},
"devDependencies": {
+94
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@@ -0,0 +1,94 @@
#!/usr/bin/env bash
set -Eeuo pipefail
CONFIG_FILE="/etc/pi-car-companion/companion.env"
HOTSPOT_CONNECTION="pi-car-hotspot"
HOTSPOT_INTERFACE="wlan0"
UPSTREAM_INTERFACE="wlan1"
HOTSPOT_ADDRESS="10.42.0.1/24"
HOTSPOT_SSID="${1:-MG4-Companion}"
if [[ ${EUID} -ne 0 ]]; then
exec sudo -- "$0" "$@"
fi
if [[ ! -f "${CONFIG_FILE}" ]]; then
echo "Pi Car Companion is not installed. Run install.sh first." >&2
exit 1
fi
if [[ ! "${HOTSPOT_SSID}" =~ ^[[:alnum:]_.-]{1,32}$ ]]; then
echo "The hotspot SSID must contain 1-32 letters, numbers, dots, hyphens, or underscores." >&2
exit 1
fi
if [[ "$(nmcli --get-values GENERAL.STATE device show "${UPSTREAM_INTERFACE}" 2>/dev/null || true)" != 100* ]]; then
echo "${UPSTREAM_INTERFACE} must be connected to a saved upstream network before failover is enabled." >&2
echo "Connect it first with: sudo nmcli --ask device wifi connect '<SSID>' ifname ${UPSTREAM_INTERFACE} name upstream-home" >&2
exit 1
fi
read -r -s -p "Password for ${HOTSPOT_SSID} (8-63 characters): " hotspot_password
echo
if (( ${#hotspot_password} < 8 || ${#hotspot_password} > 63 )) || [[ ! "${hotspot_password}" =~ ^[[:alnum:]_.-]+$ ]]; then
echo "The hotspot password must contain 8-63 letters, numbers, dots, hyphens, or underscores." >&2
exit 1
fi
hotspot_file="/etc/NetworkManager/system-connections/${HOTSPOT_CONNECTION}.nmconnection"
hotspot_uuid="$(uuidgen)"
temporary_file="$(mktemp)"
trap 'rm -f -- "${temporary_file}"' EXIT
cat > "${temporary_file}" <<EOF
[connection]
id=${HOTSPOT_CONNECTION}
uuid=${hotspot_uuid}
type=wifi
interface-name=${HOTSPOT_INTERFACE}
autoconnect=false
[wifi]
band=bg
mode=ap
ssid=${HOTSPOT_SSID}
[wifi-security]
key-mgmt=wpa-psk
psk=${hotspot_password}
[ipv4]
address1=${HOTSPOT_ADDRESS}
method=shared
[ipv6]
method=disabled
EOF
if nmcli --get-values NAME connection show | grep -Fxq "${HOTSPOT_CONNECTION}"; then
nmcli connection delete "${HOTSPOT_CONNECTION}"
fi
install -m 0600 -o root -g root "${temporary_file}" "${hotspot_file}"
nmcli connection load "${hotspot_file}"
hotspot_password=""
set_env() {
local key="$1"
local value="$2"
if grep -q "^${key}=" "${CONFIG_FILE}"; then
sed -i "s|^${key}=.*|${key}=${value}|" "${CONFIG_FILE}"
else
printf '%s=%s\n' "${key}" "${value}" >> "${CONFIG_FILE}"
fi
}
set_env NETWORK_MANAGER_ENABLED true
set_env NETWORK_HOTSPOT_INTERFACE "${HOTSPOT_INTERFACE}"
set_env NETWORK_UPSTREAM_INTERFACE "${UPSTREAM_INTERFACE}"
set_env NETWORK_HOTSPOT_CONNECTION "${HOTSPOT_CONNECTION}"
set_env NETWORK_PROBE_TIMEOUT_SECONDS 60
set_env NETWORK_STABILITY_SECONDS 10
set_env NETWORK_POLL_SECONDS 5
systemctl enable --now pi-car-companion-network.service
systemctl restart pi-car-companion.service
upstream_address="$(nmcli --get-values IP4.ADDRESS device show "${UPSTREAM_INTERFACE}" | head -n 1)"
echo "Network failover is enabled."
echo "The dashboard will remain reachable through ${UPSTREAM_INTERFACE} at ${upstream_address:-its current address}."
echo "The car hotspot is ${HOTSPOT_SSID} and its dashboard address is http://10.42.0.1:8787."
+3
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@@ -136,8 +136,10 @@ chown -R root:root "${release_final}"
install_integration_files() {
local source_release="$1"
install -m 0755 "${source_release}/scripts/pi-car-companion-update" /usr/local/sbin/pi-car-companion-update
install -m 0755 "${source_release}/scripts/pi-car-companion-network-setup" /usr/local/sbin/pi-car-companion-network-setup
install -m 0644 "${source_release}/systemd/pi-car-companion.service" /etc/systemd/system/pi-car-companion.service
install -m 0644 "${source_release}/systemd/pi-car-companion-update.service" /etc/systemd/system/pi-car-companion-update.service
install -m 0644 "${source_release}/systemd/pi-car-companion-network.service" /etc/systemd/system/pi-car-companion-network.service
install -m 0440 "${source_release}/systemd/pi-car-companion.sudoers" /etc/sudoers.d/pi-car-companion
}
@@ -175,3 +177,4 @@ if [[ "${healthy}" != "true" ]]; then
fi
write_status "success" "Update installed and the companion service is healthy."
systemctl try-restart pi-car-companion-network.service || true
+36
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@@ -19,6 +19,7 @@ import {
} from "./security.js";
import { collectSystemStatus } from "./status.js";
import { readUpdateStatus, triggerSystemUpdate } from "./update.js";
import { networkActionSchema, readNetworkStatus, requestNetworkAction } from "./network.js";
import { collectAdbStatus } from "./adb.js";
import "./types.js";
@@ -313,6 +314,41 @@ export async function buildApp(config: AppConfig): Promise<FastifyInstance> {
return reply.code(202).send(run);
});
app.get("/api/network", async (request, reply) => {
if (!requireUser(request, reply)) return;
return readNetworkStatus(config);
});
app.post("/api/network/actions", async (request, reply) => {
if (!requireUser(request, reply)) return;
const parsed = z.object({ action: networkActionSchema }).safeParse(request.body);
if (!parsed.success) {
return reply.code(400).send({ error: { code: "INVALID_NETWORK_ACTION", message: "That network action is not available" } });
}
try {
const command = await requestNetworkAction(config, parsed.data.action, request.authUser!.id);
audit(database, {
actorUserId: request.authUser!.id,
action: `network.${parsed.data.action}`,
result: "success",
ipAddress: clientAddress(request),
details: { commandId: command.id }
});
return reply.code(202).send({ accepted: true, commandId: command.id });
} catch {
audit(database, {
actorUserId: request.authUser!.id,
action: `network.${parsed.data.action}`,
result: "failure",
ipAddress: clientAddress(request),
details: { reason: "controller_unavailable" }
});
return reply.code(503).send({
error: { code: "NETWORK_CONTROL_UNAVAILABLE", message: "Automatic network management is not configured" }
});
}
});
app.get("/api/system/update", async (request, reply) => {
if (!requireUser(request, reply)) return;
return readUpdateStatus(config);
+13
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@@ -17,6 +17,9 @@ const schema = z.object({
ALLOWED_ORIGINS: z.string().default("http://mg4pi.local:8787"),
UPDATE_STATUS_PATH: z.string().default("/var/lib/pi-car-companion/update-status.json"),
VERSION_FILE: z.string().default(resolve("REVISION")),
NETWORK_MANAGER_ENABLED: booleanFromString,
NETWORK_STATUS_PATH: z.string().default("/var/lib/pi-car-companion/network-status.json"),
NETWORK_COMMAND_PATH: z.string().default("/var/lib/pi-car-companion/network-command.json"),
ADB_ENABLED: booleanFromString,
ADB_PATH: z.string().min(1).default("adb"),
ADB_SERIAL: z.string().max(128).regex(/^[a-zA-Z0-9._:-]*$/).default(""),
@@ -33,6 +36,11 @@ export type AppConfig = {
allowedOrigins: ReadonlySet<string>;
updateStatusPath: string;
versionFile: string;
network: {
enabled: boolean;
statusPath: string;
commandPath: string;
};
adb: AdbConfig;
};
@@ -60,6 +68,11 @@ export function loadConfig(environment: NodeJS.ProcessEnv = process.env): AppCon
allowedOrigins,
updateStatusPath: parsed.UPDATE_STATUS_PATH,
versionFile: parsed.VERSION_FILE,
network: {
enabled: parsed.NETWORK_MANAGER_ENABLED,
statusPath: parsed.NETWORK_STATUS_PATH,
commandPath: parsed.NETWORK_COMMAND_PATH
},
adb: {
enabled: parsed.ADB_ENABLED,
executable: parsed.ADB_PATH,
+238
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@@ -0,0 +1,238 @@
import { execFile } from "node:child_process";
import { readFile } from "node:fs/promises";
import { promisify } from "node:util";
import { z } from "zod";
import {
consumeNetworkCommand,
networkStatusSchema,
writeNetworkStatus,
type NetworkAction,
type NetworkMode,
type NetworkStatus
} from "./network.js";
const execFileAsync = promisify(execFile);
const sleep = (milliseconds: number) => new Promise((resolve) => setTimeout(resolve, milliseconds));
const controllerConfigSchema = z.object({
NETWORK_MANAGER_ENABLED: z.enum(["true", "false"]).default("false").transform((value) => value === "true"),
NETWORK_STATUS_PATH: z.string().default("/var/lib/pi-car-companion/network-status.json"),
NETWORK_COMMAND_PATH: z.string().default("/var/lib/pi-car-companion/network-command.json"),
NETWORK_HOTSPOT_INTERFACE: z.string().regex(/^[a-zA-Z0-9_.-]+$/).default("wlan0"),
NETWORK_UPSTREAM_INTERFACE: z.string().regex(/^[a-zA-Z0-9_.-]+$/).default("wlan1"),
NETWORK_HOTSPOT_CONNECTION: z.string().min(1).max(128).default("pi-car-hotspot"),
NETWORK_PROBE_TIMEOUT_SECONDS: z.coerce.number().int().min(15).max(180).default(60),
NETWORK_STABILITY_SECONDS: z.coerce.number().int().min(3).max(60).default(10),
NETWORK_POLL_SECONDS: z.coerce.number().int().min(2).max(30).default(5)
});
type ControllerConfig = z.infer<typeof controllerConfigSchema>;
type Adapter = NetworkStatus["hotspot"];
async function nmcli(args: string[], timeoutMs = 20_000): Promise<string> {
const { stdout } = await execFileAsync("/usr/bin/nmcli", args, { timeout: timeoutMs, maxBuffer: 32 * 1024 });
return stdout.trim();
}
async function field(device: string, name: string): Promise<string | null> {
try {
return (await nmcli(["--get-values", name, "device", "show", device])).split("\n")[0]?.trim() || null;
} catch {
return null;
}
}
async function inspectAdapter(device: string): Promise<Adapter> {
const type = await field(device, "GENERAL.TYPE");
if (type !== "wifi") return { interface: device, available: false, connected: false, connection: null, address: null };
const state = await field(device, "GENERAL.STATE");
return {
interface: device,
available: true,
connected: state?.startsWith("100") ?? false,
connection: await field(device, "GENERAL.CONNECTION"),
address: await field(device, "IP4.ADDRESS")
};
}
async function connectivity(): Promise<NetworkStatus["connectivity"]> {
try {
const value = await nmcli(["networking", "connectivity", "check"], 10_000);
return ["full", "limited", "portal", "none", "unknown"].includes(value)
? (value as NetworkStatus["connectivity"])
: "unknown";
} catch {
return "unknown";
}
}
class NetworkController {
private mode: NetworkMode = "starting";
private message = "Inspecting network adapters.";
private lastTransitionAt = new Date().toISOString();
private lastFailure: string | null = null;
private probeDeadline: string | null = null;
private fallbackAttempted = false;
private nextAwusAttemptAt = 0;
private stopped = false;
constructor(private readonly config: ControllerConfig) {}
stop(): void {
this.stopped = true;
}
private transition(mode: NetworkMode, message: string, failure: string | null = null): void {
if (this.mode !== mode) this.lastTransitionAt = new Date().toISOString();
this.mode = mode;
this.message = message;
this.lastFailure = failure;
}
private async publish(): Promise<{ hotspot: Adapter; upstream: Adapter }> {
const [hotspot, upstream, internet] = await Promise.all([
inspectAdapter(this.config.NETWORK_HOTSPOT_INTERFACE),
inspectAdapter(this.config.NETWORK_UPSTREAM_INTERFACE),
connectivity()
]);
await writeNetworkStatus(this.config.NETWORK_STATUS_PATH, {
enabled: true,
mode: this.mode,
message: this.message,
updatedAt: new Date().toISOString(),
lastTransitionAt: this.lastTransitionAt,
probeDeadline: this.probeDeadline,
lastFailure: this.lastFailure,
connectivity: internet,
hotspot,
upstream
});
return { hotspot, upstream };
}
private async connectUpstreamAdapter(): Promise<boolean> {
try {
await nmcli(["--wait", "20", "device", "connect", this.config.NETWORK_UPSTREAM_INTERFACE], 25_000);
await sleep(this.config.NETWORK_STABILITY_SECONDS * 1000);
return (await inspectAdapter(this.config.NETWORK_UPSTREAM_INTERFACE)).connected;
} catch (error) {
this.lastFailure = error instanceof Error ? error.message.slice(0, 500) : "The upstream adapter could not connect.";
return false;
}
}
private async restoreHotspot(message = "Offline hotspot restored; the dashboard remains available without internet."): Promise<boolean> {
this.probeDeadline = null;
try {
await nmcli(
["--wait", "20", "connection", "up", this.config.NETWORK_HOTSPOT_CONNECTION, "ifname", this.config.NETWORK_HOTSPOT_INTERFACE],
25_000
);
const upstream = await inspectAdapter(this.config.NETWORK_UPSTREAM_INTERFACE);
this.transition(upstream.connected ? "dual_radio" : "offline_hotspot", upstream.connected ? "Car hotspot is active with AWUS upstream internet." : message);
return true;
} catch (error) {
const failure = error instanceof Error ? error.message.slice(0, 500) : "The hotspot could not be restored.";
this.transition("error", "The recovery hotspot could not be activated. Local intervention is required.", failure);
return false;
}
}
private async probeBuiltIn(): Promise<void> {
const timeout = this.config.NETWORK_PROBE_TIMEOUT_SECONDS;
this.probeDeadline = new Date(Date.now() + timeout * 1000).toISOString();
this.transition("probing_built_in", `Trying saved upstream networks on the built-in adapter for up to ${timeout} seconds.`);
await this.publish();
try {
await nmcli(["--wait", "10", "connection", "down", this.config.NETWORK_HOTSPOT_CONNECTION], 15_000).catch(() => undefined);
await nmcli(["--wait", String(timeout), "device", "connect", this.config.NETWORK_HOTSPOT_INTERFACE], (timeout + 5) * 1000);
if ((await inspectAdapter(this.config.NETWORK_HOTSPOT_INTERFACE)).connected) {
this.probeDeadline = null;
this.transition("built_in_upstream", "The built-in adapter is connected upstream; the car hotspot is temporarily unavailable.");
this.fallbackAttempted = false;
return;
}
throw new Error("The built-in adapter did not activate a saved upstream profile.");
} catch (error) {
this.lastFailure = error instanceof Error ? error.message.slice(0, 500) : "No saved upstream network was available.";
this.fallbackAttempted = true;
await this.restoreHotspot();
}
}
private async handleAction(action: NetworkAction): Promise<void> {
if (action === "restore-hotspot") {
this.fallbackAttempted = true;
await this.restoreHotspot("The offline hotspot was restored manually.");
return;
}
this.fallbackAttempted = false;
const upstream = await inspectAdapter(this.config.NETWORK_UPSTREAM_INTERFACE);
if (upstream.available && (upstream.connected || (await this.connectUpstreamAdapter()))) {
await this.restoreHotspot();
return;
}
await this.probeBuiltIn();
}
async run(): Promise<void> {
try {
const prior = networkStatusSchema.parse(JSON.parse(await readFile(this.config.NETWORK_STATUS_PATH, "utf8")));
this.mode = prior.mode;
this.message = prior.message;
this.lastTransitionAt = prior.lastTransitionAt;
this.lastFailure = prior.lastFailure;
this.fallbackAttempted = prior.mode === "offline_hotspot";
} catch {
// A first start intentionally discovers the live NetworkManager state.
}
let previous = await this.publish();
while (!this.stopped) {
const command = await consumeNetworkCommand(this.config.NETWORK_COMMAND_PATH);
if (command) await this.handleAction(command.action);
let { hotspot, upstream } = await this.publish();
const hotspotActive = hotspot.connected && hotspot.connection === this.config.NETWORK_HOTSPOT_CONNECTION;
const builtInUpstream = hotspot.connected && !hotspotActive;
if (upstream.connected) {
if (!hotspotActive) await this.restoreHotspot();
else this.transition("dual_radio", "Car hotspot is active with AWUS upstream internet.");
this.fallbackAttempted = false;
} else if (builtInUpstream) {
this.transition("built_in_upstream", "The built-in adapter is connected upstream; the car hotspot is temporarily unavailable.");
if (upstream.available && Date.now() >= this.nextAwusAttemptAt) {
this.nextAwusAttemptAt = Date.now() + 60_000;
if (await this.connectUpstreamAdapter()) await this.restoreHotspot();
}
} else {
const awusJustFailed = previous.upstream.connected && !upstream.connected;
if (upstream.available && Date.now() >= this.nextAwusAttemptAt) {
this.nextAwusAttemptAt = Date.now() + 60_000;
if (await this.connectUpstreamAdapter()) {
await this.restoreHotspot();
({ hotspot, upstream } = await this.publish());
}
}
if (!upstream.connected && !this.fallbackAttempted && (awusJustFailed || hotspotActive || !hotspot.connected)) {
await this.probeBuiltIn();
} else if (!upstream.connected && hotspotActive) {
this.transition("offline_hotspot", "Offline hotspot is active; no upstream network is currently connected.", this.lastFailure);
}
}
previous = await this.publish();
await sleep(this.config.NETWORK_POLL_SECONDS * 1000);
}
}
}
const config = controllerConfigSchema.parse(process.env);
if (!config.NETWORK_MANAGER_ENABLED) {
process.exit(0);
}
const controller = new NetworkController(config);
process.on("SIGINT", () => controller.stop());
process.on("SIGTERM", () => controller.stop());
await controller.run();
+116
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@@ -0,0 +1,116 @@
import { randomUUID } from "node:crypto";
import { chmod, readFile, rename, writeFile } from "node:fs/promises";
import { dirname, join } from "node:path";
import { z } from "zod";
import type { AppConfig } from "./config.js";
export const networkModeSchema = z.enum([
"disabled",
"starting",
"dual_radio",
"built_in_upstream",
"probing_built_in",
"offline_hotspot",
"degraded",
"error"
]);
export type NetworkMode = z.infer<typeof networkModeSchema>;
const adapterSchema = z.object({
interface: z.string().max(64),
available: z.boolean(),
connected: z.boolean(),
connection: z.string().max(128).nullable(),
address: z.string().max(128).nullable()
});
export const networkStatusSchema = z.object({
enabled: z.boolean(),
mode: networkModeSchema,
message: z.string().max(500),
updatedAt: z.string(),
lastTransitionAt: z.string(),
probeDeadline: z.string().nullable(),
lastFailure: z.string().max(500).nullable(),
connectivity: z.enum(["full", "limited", "portal", "none", "unknown"]),
hotspot: adapterSchema,
upstream: adapterSchema
});
export type NetworkStatus = z.infer<typeof networkStatusSchema> & { supported: boolean };
export const networkActionSchema = z.enum(["retry-upstream", "restore-hotspot"]);
export type NetworkAction = z.infer<typeof networkActionSchema>;
const commandSchema = z.object({
id: z.string().uuid(),
action: networkActionSchema,
requestedAt: z.string(),
actorUserId: z.number().int().positive()
});
export type NetworkCommand = z.infer<typeof commandSchema>;
async function atomicJsonWrite(path: string, value: unknown): Promise<void> {
const temporary = join(dirname(path), `.${randomUUID()}.tmp`);
await writeFile(temporary, `${JSON.stringify(value)}\n`, { mode: 0o640 });
await chmod(temporary, 0o640);
await rename(temporary, path);
}
export async function readNetworkStatus(config: AppConfig): Promise<NetworkStatus> {
if (!config.network.enabled) {
return unsupportedStatus("Automatic network management is disabled until its hotspot and upstream profiles are configured.");
}
try {
return { ...networkStatusSchema.parse(JSON.parse(await readFile(config.network.statusPath, "utf8"))), supported: true };
} catch {
return {
...unsupportedStatus("The network controller is starting or its status is unavailable."),
enabled: true,
mode: "starting"
};
}
}
export async function requestNetworkAction(
config: AppConfig,
action: NetworkAction,
actorUserId: number
): Promise<NetworkCommand> {
if (!config.network.enabled) throw new Error("NETWORK_MANAGER_DISABLED");
const command = commandSchema.parse({ id: randomUUID(), action, requestedAt: new Date().toISOString(), actorUserId });
await atomicJsonWrite(config.network.commandPath, command);
return command;
}
export async function consumeNetworkCommand(path: string): Promise<NetworkCommand | null> {
try {
const parsed = commandSchema.parse(JSON.parse(await readFile(path, "utf8")));
await writeFile(path, "", { mode: 0o640 });
return parsed;
} catch {
return null;
}
}
function unsupportedStatus(message: string): NetworkStatus {
const epoch = new Date(0).toISOString();
const adapter = { interface: "unconfigured", available: false, connected: false, connection: null, address: null };
return {
supported: false,
enabled: false,
mode: "disabled",
message,
updatedAt: epoch,
lastTransitionAt: epoch,
probeDeadline: null,
lastFailure: null,
connectivity: "unknown",
hotspot: adapter,
upstream: adapter
};
}
export async function writeNetworkStatus(path: string, status: z.infer<typeof networkStatusSchema>): Promise<void> {
await atomicJsonWrite(path, networkStatusSchema.parse(status));
await chmod(path, 0o644);
}
+32
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@@ -17,6 +17,11 @@ function testConfig(): AppConfig {
allowedOrigins: new Set(["http://mg4pi.local:8787"]),
updateStatusPath: `/tmp/pi-car-companion-test-${process.pid}-missing-update.json`,
versionFile: `/tmp/pi-car-companion-test-${process.pid}-missing-revision`,
network: {
enabled: false,
statusPath: `/tmp/pi-car-companion-test-${process.pid}-missing-network-status.json`,
commandPath: `/tmp/pi-car-companion-test-${process.pid}-network-command.json`
},
adb: { enabled: false, executable: "adb", serial: null, timeoutMs: 3_000 }
};
}
@@ -180,6 +185,33 @@ describe("authentication boundary", () => {
expect(response.statusCode).toBe(401);
});
it("keeps network status and controls behind authentication and explicit configuration", async () => {
const app = await createApp();
expect((await app.inject({ method: "GET", url: "/api/network" })).statusCode).toBe(401);
const token = await csrf(app);
await setup(app, token);
const login = await app.inject({
method: "POST",
url: "/api/auth/login",
headers: mutationHeaders(token),
payload: { username: "owner", password: "Correct-horse1" }
});
const session = login.cookies.find((item) => item.name === SESSION_COOKIE)?.value ?? "";
const cookie = `${CSRF_COOKIE}=${token}; ${SESSION_COOKIE}=${session}`;
const status = await app.inject({ method: "GET", url: "/api/network", headers: { cookie } });
expect(status.statusCode).toBe(200);
expect(status.json()).toMatchObject({ supported: false, enabled: false, mode: "disabled" });
const action = await app.inject({
method: "POST",
url: "/api/network/actions",
headers: { ...mutationHeaders(token), cookie },
payload: { action: "retry-upstream" }
});
expect(action.statusCode).toBe(503);
});
it("exposes only allowlisted jobs and authenticated run history", async () => {
const app = await createApp();
const token = await csrf(app);
+8
View File
@@ -21,4 +21,12 @@ describe("ADB configuration", () => {
serial: "10.0.0.10:5555"
});
});
it("keeps automatic network management disabled by default", () => {
expect(loadConfig({ NODE_ENV: "test" }).network).toEqual({
enabled: false,
statusPath: "/var/lib/pi-car-companion/network-status.json",
commandPath: "/var/lib/pi-car-companion/network-command.json"
});
});
});
+52
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@@ -0,0 +1,52 @@
import { mkdtemp, readFile, rm, writeFile } from "node:fs/promises";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { afterEach, describe, expect, it } from "vitest";
import type { AppConfig } from "../src/config.js";
import { consumeNetworkCommand, readNetworkStatus, requestNetworkAction } from "../src/network.js";
const directories: string[] = [];
function config(directory: string, enabled = true): AppConfig {
return {
nodeEnv: "test",
host: "127.0.0.1",
port: 8787,
databasePath: ":memory:",
sessionTtlMs: 60_000,
cookieSecure: false,
allowedOrigins: new Set(),
updateStatusPath: join(directory, "update.json"),
versionFile: join(directory, "REVISION"),
network: { enabled, statusPath: join(directory, "status.json"), commandPath: join(directory, "command.json") },
adb: { enabled: false, executable: "adb", serial: null, timeoutMs: 3_000 }
};
}
afterEach(async () => {
await Promise.all(directories.splice(0).map((directory) => rm(directory, { recursive: true, force: true })));
});
describe("network control boundary", () => {
it("writes and consumes only fixed action requests", async () => {
const directory = await mkdtemp(join(tmpdir(), "pi-car-network-test-"));
directories.push(directory);
const testConfig = config(directory);
const requested = await requestNetworkAction(testConfig, "retry-upstream", 7);
expect(JSON.parse(await readFile(testConfig.network.commandPath, "utf8"))).toMatchObject({
id: requested.id,
action: "retry-upstream",
actorUserId: 7
});
await expect(consumeNetworkCommand(testConfig.network.commandPath)).resolves.toMatchObject({ action: "retry-upstream" });
await expect(consumeNetworkCommand(testConfig.network.commandPath)).resolves.toBeNull();
});
it("rejects malformed controller status", async () => {
const directory = await mkdtemp(join(tmpdir(), "pi-car-network-test-"));
directories.push(directory);
const testConfig = config(directory);
await writeFile(testConfig.network.statusPath, '{"mode":"shell"}');
await expect(readNetworkStatus(testConfig)).resolves.toMatchObject({ supported: false, mode: "starting" });
});
});
+5
View File
@@ -18,6 +18,11 @@ function config(updateStatusPath: string, versionFile: string): AppConfig {
allowedOrigins: new Set(),
updateStatusPath,
versionFile,
network: {
enabled: false,
statusPath: join(tmpdir(), "missing-network-status.json"),
commandPath: join(tmpdir(), "network-command.json")
},
adb: { enabled: false, executable: "adb", serial: null, timeoutMs: 3_000 }
};
}
+30
View File
@@ -0,0 +1,30 @@
[Unit]
Description=Pi Car Companion network failover controller
After=NetworkManager.service
Wants=NetworkManager.service
[Service]
Type=simple
EnvironmentFile=/etc/pi-car-companion/companion.env
Environment=HOME=/var/lib/pi-car-companion
WorkingDirectory=/opt/pi-car-companion/current
ExecStart=/usr/bin/node /opt/pi-car-companion/current/server/dist/network-controller.js
Restart=on-failure
RestartSec=5s
TimeoutStopSec=15s
UMask=0027
NoNewPrivileges=true
PrivateTmp=true
ProtectSystem=strict
ProtectHome=true
ProtectKernelTunables=true
ProtectKernelModules=true
ProtectControlGroups=true
RestrictRealtime=true
LockPersonality=true
SystemCallArchitectures=native
RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
ReadWritePaths=/var/lib/pi-car-companion
[Install]
WantedBy=multi-user.target
+113 -8
View File
@@ -18,10 +18,12 @@ import {
ApiError,
getAuthState,
getStatus,
getNetworkStatus,
getUpdateStatus,
post,
type AuthState,
type SystemStatus,
type NetworkStatus,
type UpdateStatus
} from "./api";
@@ -224,35 +226,67 @@ function Dashboard({ auth, onLoggedOut }: { auth: AuthState; onLoggedOut: () =>
function SettingsPage({ csrfToken }: { csrfToken: string }) {
const [update, setUpdate] = useState<UpdateStatus | null>(null);
const [error, setError] = useState("");
const [network, setNetwork] = useState<NetworkStatus | null>(null);
const [updateError, setUpdateError] = useState("");
const [networkError, setNetworkError] = useState("");
const [requesting, setRequesting] = useState(false);
const [confirming, setConfirming] = useState(false);
const [networkAction, setNetworkAction] = useState<"retry-upstream" | "restore-hotspot" | null>(null);
const running = update?.state === "checking" || update?.state === "building";
const refreshUpdate = useCallback(async () => {
try {
setUpdate(await getUpdateStatus());
setError("");
setUpdateError("");
} catch (caught) {
setError(caught instanceof Error ? caught.message : "Update status is unavailable");
setUpdateError(caught instanceof Error ? caught.message : "Update status is unavailable");
}
}, []);
const refreshNetwork = useCallback(async () => {
try {
setNetwork(await getNetworkStatus());
setNetworkError("");
} catch (caught) {
setNetworkError(caught instanceof Error ? caught.message : "Network status is unavailable");
}
}, []);
useEffect(() => {
void refreshUpdate();
const interval = window.setInterval(() => void refreshUpdate(), 3_000);
void refreshNetwork();
const interval = window.setInterval(() => {
void refreshUpdate();
void refreshNetwork();
}, 3_000);
return () => window.clearInterval(interval);
}, [refreshUpdate]);
}, [refreshNetwork, refreshUpdate]);
async function startUpdate() {
setConfirming(false);
setRequesting(true);
setError("");
setUpdateError("");
try {
await post("/api/system/update", {}, csrfToken);
await refreshUpdate();
} catch (caught) {
setError(caught instanceof ApiError ? caught.message : "The update could not be started");
setUpdateError(caught instanceof ApiError ? caught.message : "The update could not be started");
} finally {
setRequesting(false);
}
}
async function requestNetworkAction() {
if (!networkAction) return;
const action = networkAction;
setNetworkAction(null);
setRequesting(true);
setNetworkError("");
try {
await post("/api/network/actions", { action }, csrfToken);
await refreshNetwork();
} catch (caught) {
setNetworkError(caught instanceof ApiError ? caught.message : "The network action could not be requested");
} finally {
setRequesting(false);
}
@@ -260,9 +294,57 @@ function SettingsPage({ csrfToken }: { csrfToken: string }) {
const revision = update?.installedRevision?.slice(0, 12) ?? "Unavailable";
const statusLabel = !update ? "Loading" : update.state === "current" ? "Up to date" : update.state === "success" ? "Updated" : update.state === "failed" ? "Needs attention" : running ? "Updating" : "Ready";
const modeLabels: Record<NonNullable<NetworkStatus>["mode"], string> = {
disabled: "Not configured",
starting: "Starting",
dual_radio: "Hotspot + internet",
built_in_upstream: "Built-in upstream",
probing_built_in: "Looking for internet",
offline_hotspot: "Offline hotspot",
degraded: "Needs attention",
error: "Recovery failed"
};
const probeSeconds = network?.probeDeadline
? Math.max(0, Math.ceil((Date.parse(network.probeDeadline) - Date.now()) / 1000))
: null;
return (
<div className="settings-layout">
<section className="settings-panel network-panel">
<div className="settings-title">
<div className="settings-icon"><WifiHigh size={30} weight="duotone" /></div>
<div><h2>Car network</h2><p>Keep the dashboard reachable through the built-in hotspot while preferring the AWUS1900 for upstream internet.</p></div>
</div>
<div className="network-overview">
<div className={`network-mode mode-${network?.mode ?? "starting"}`}>
<span>Current mode</span>
<strong>{network ? modeLabels[network.mode] : "Loading"}</strong>
<p>{network?.message ?? "Reading network controller status..."}</p>
{probeSeconds !== null && <small>Offline hotspot recovery in at most {probeSeconds} seconds</small>}
</div>
<NetworkAdapter label="Built-in / car hotspot" adapter={network?.hotspot ?? null} />
<NetworkAdapter label="AWUS1900 / upstream" adapter={network?.upstream ?? null} />
<div className="network-adapter">
<span>Internet check</span>
<strong>{network?.connectivity ?? "unknown"}</strong>
<small>Reported by NetworkManager</small>
</div>
</div>
{networkError && <div className="form-error" role="alert"><WarningCircle size={20} />{networkError}</div>}
{network?.lastFailure && <p className="network-failure"><WarningCircle size={18} /> Last issue: {network.lastFailure}</p>}
<div className="settings-actions">
<button className="primary-button" onClick={() => setNetworkAction("retry-upstream")} disabled={!network?.supported || requesting || network.mode === "probing_built_in"}>
<ArrowClockwise size={22} /> Try upstream again
</button>
<button className="secondary-button text-button" onClick={() => setNetworkAction("restore-hotspot")} disabled={!network?.supported || requesting || network.mode === "offline_hotspot" || network.mode === "dual_radio"}>
<WifiHigh size={22} /> Restore hotspot
</button>
</div>
{!network?.supported && <p className="settings-note">Run the network setup helper on the Pi after creating a saved AWUS upstream profile. Automatic switching stays disabled until then.</p>}
</section>
<section className="settings-panel">
<div className="settings-title">
<div className="settings-icon"><DownloadSimple size={30} weight="duotone" /></div>
@@ -281,7 +363,7 @@ function SettingsPage({ csrfToken }: { csrfToken: string }) {
{!running && update?.state !== "failed" && <CheckCircle size={22} />}
<span>{update?.message ?? "Reading update status..."}</span>
</div>
{error && <div className="form-error" role="alert"><WarningCircle size={20} />{error}</div>}
{updateError && <div className="form-error" role="alert"><WarningCircle size={20} />{updateError}</div>}
<div className="settings-actions">
<button className="primary-button" onClick={() => setConfirming(true)} disabled={!update?.supported || running || requesting}>
@@ -311,6 +393,29 @@ function SettingsPage({ csrfToken }: { csrfToken: string }) {
</div>
</div>
</div>}
{networkAction && <div className="modal-backdrop" role="presentation" onMouseDown={() => setNetworkAction(null)}>
<div className="confirm-dialog" role="dialog" aria-modal="true" aria-labelledby="network-dialog-title" onMouseDown={(event) => event.stopPropagation()}>
<h2 id="network-dialog-title">{networkAction === "retry-upstream" ? "Try upstream networking?" : "Restore the car hotspot?"}</h2>
<p>{networkAction === "retry-upstream"
? "If the AWUS1900 cannot connect, the built-in hotspot will disappear for up to 60 seconds while saved upstream networks are tried. It will be restored automatically after failure."
: "The built-in adapter will leave its upstream network and restore the car hotspot. This dashboard connection may briefly disconnect."}</p>
<div className="dialog-actions">
<button className="secondary-button" onClick={() => setNetworkAction(null)}>Cancel</button>
<button className="primary-button" onClick={() => void requestNetworkAction()}>Continue</button>
</div>
</div>
</div>}
</div>
);
}
function NetworkAdapter({ label, adapter }: { label: string; adapter: NetworkStatus["hotspot"] | null }) {
return (
<div className="network-adapter">
<span>{label}</span>
<strong>{!adapter ? "Loading" : !adapter.available ? "Unavailable" : adapter.connected ? adapter.connection ?? "Connected" : "Disconnected"}</strong>
<small>{adapter?.address ?? adapter?.interface ?? "Waiting for status"}</small>
</div>
);
}
+26
View File
@@ -66,6 +66,28 @@ export type UpdateStatus = {
supported: boolean;
};
export type NetworkStatus = {
supported: boolean;
enabled: boolean;
mode: "disabled" | "starting" | "dual_radio" | "built_in_upstream" | "probing_built_in" | "offline_hotspot" | "degraded" | "error";
message: string;
updatedAt: string;
lastTransitionAt: string;
probeDeadline: string | null;
lastFailure: string | null;
connectivity: "full" | "limited" | "portal" | "none" | "unknown";
hotspot: NetworkAdapterStatus;
upstream: NetworkAdapterStatus;
};
export type NetworkAdapterStatus = {
interface: string;
available: boolean;
connected: boolean;
connection: string | null;
address: string | null;
};
type ErrorResponse = { error?: { code?: string; message?: string } };
export class ApiError extends Error {
@@ -108,3 +130,7 @@ export async function getStatus(): Promise<SystemStatus> {
export async function getUpdateStatus(): Promise<UpdateStatus> {
return parseResponse<UpdateStatus>(await fetch("/api/system/update", { credentials: "same-origin" }));
}
export async function getNetworkStatus(): Promise<NetworkStatus> {
return parseResponse<NetworkStatus>(await fetch("/api/network", { credentials: "same-origin" }));
}
+14
View File
@@ -105,6 +105,18 @@ button:disabled { opacity: 0.55; cursor: not-allowed; }
.settings-layout { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.7fr); gap: 18px; align-items: start; }
.settings-panel { padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.network-panel { grid-column: 1 / -1; }
.network-overview { display: grid; grid-template-columns: 1.3fr repeat(3, minmax(0, 1fr)); gap: 1px; margin: 28px 0 20px; overflow: hidden; border: 1px solid var(--line); border-radius: 11px; background: var(--line); }
.network-mode, .network-adapter { min-width: 0; padding: 19px; background: #121610; }
.network-mode span, .network-adapter span { display: block; margin-bottom: 10px; color: var(--muted); font-size: 0.78rem; }
.network-mode strong, .network-adapter strong { display: block; overflow: hidden; font-size: 1.05rem; text-overflow: ellipsis; white-space: nowrap; }
.network-mode p { min-height: 2.7em; margin: 9px 0 0; color: var(--muted); font-size: 0.82rem; line-height: 1.35; }
.network-mode small, .network-adapter small { display: block; overflow: hidden; margin-top: 9px; color: #899183; font: 0.72rem/1.3 ui-monospace, "Cascadia Code", monospace; text-overflow: ellipsis; white-space: nowrap; }
.mode-dual_radio strong, .mode-offline_hotspot strong { color: var(--accent); }
.mode-error strong, .mode-degraded strong { color: var(--danger); }
.network-failure { display: flex; align-items: flex-start; gap: 8px; margin: 0 0 16px; color: #ffc8bf; font-size: 0.82rem; line-height: 1.45; }
.network-failure svg { flex: none; }
.text-button { width: auto; padding: 0 20px; font-size: inherit; }
.settings-title { display: flex; align-items: flex-start; gap: 18px; }
.settings-title h2, .compact-panel h2 { margin-bottom: 8px; font-size: 1.45rem; }
.settings-title p { max-width: 620px; margin: 0; color: var(--muted); line-height: 1.5; }
@@ -144,6 +156,7 @@ button:disabled { opacity: 0.55; cursor: not-allowed; }
.health-summary { grid-template-columns: 1fr; gap: 24px; }
.metrics-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.settings-layout { grid-template-columns: 1fr; }
.network-overview { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 767px) {
@@ -167,6 +180,7 @@ button:disabled { opacity: 0.55; cursor: not-allowed; }
.summary-details div { padding: 0; border: 0; }
.metrics-grid, .system-strip { grid-template-columns: 1fr; }
.update-facts { grid-template-columns: 1fr; }
.network-overview { grid-template-columns: 1fr; }
.settings-actions, .dialog-actions { flex-direction: column; }
.settings-actions button, .dialog-actions button { width: 100%; }
.skeleton-grid { grid-template-columns: 1fr; }