Expose authenticated devices list

cloudflare/src/devices.ts

@@ -0,0 +1,138 @@
+import type { AuthContext } from "./auth.js";
+import type { Env } from "./bindings.js";
+
+const DEVICE_ID_PATTERN = /^[a-zA-Z0-9._:-]{3,128}$/;
+const PUBLIC_KEY_PATTERN = /^[a-fA-F0-9]{64,256}$/;
+const DEVICE_TEXT_PATTERN = /^[^\p{Cc}\p{Cs}]{1,128}$/u;
+const APPROVAL_STATUS = new Set(["pending", "approved", "revoked"]);
+
+const DEVICE_LIST_QUERY = `
+  SELECT
+    device_id,
+    public_key,
+    device_name,
+    platform,
+    approval_status,
+    created_at,
+    approved_at,
+    last_active_at,
+    revoked_at
+  FROM user_devices
+  WHERE user_id = ?
+  ORDER BY
+    revoked_at IS NOT NULL,
+    COALESCE(last_active_at, approved_at, created_at) DESC,
+    device_id ASC
+`;
+
+export interface DeviceListDocument {
+  version: 1;
+  user_id: string;
+  devices: DeviceDocument[];
+}
+
+export interface DeviceDocument {
+  device_id: string;
+  public_key: string;
+  device_name: string;
+  platform: string;
+  approval_status: "pending" | "approved" | "revoked";
+  created_at: number;
+  approved_at: number | null;
+  last_active_at: number | null;
+  revoked_at: number | null;
+  current: boolean;
+}
+
+interface DeviceRow {
+  device_id: unknown;
+  public_key: unknown;
+  device_name: unknown;
+  platform: unknown;
+  approval_status: unknown;
+  created_at: unknown;
+  approved_at: unknown;
+  last_active_at: unknown;
+  revoked_at: unknown;
+}
+
+export class DeviceSchemaError extends Error {
+  constructor(message: string) {
+    super(message);
+    this.name = "DeviceSchemaError";
+  }
+}
+
+export async function deviceListDocument(
+  env: Env,
+  context: AuthContext,
+): Promise<DeviceListDocument> {
+  const result = await env.ELY_DB.prepare(DEVICE_LIST_QUERY).bind(context.userId).all<DeviceRow>();
+  return {
+    version: 1,
+    user_id: context.userId,
+    devices: result.results.map((row) => deviceDocument(row, context)),
+  };
+}
+
+function deviceDocument(row: DeviceRow, context: AuthContext): DeviceDocument {
+  const deviceId = deviceIdValue(row.device_id, "device_id");
+  return {
+    device_id: deviceId,
+    public_key: publicKeyValue(row.public_key),
+    device_name: deviceText(row.device_name, "device_name"),
+    platform: deviceText(row.platform, "platform"),
+    approval_status: approvalStatus(row.approval_status),
+    created_at: timestamp(row.created_at, "created_at"),
+    approved_at: nullableTimestamp(row.approved_at, "approved_at"),
+    last_active_at: nullableTimestamp(row.last_active_at, "last_active_at"),
+    revoked_at: nullableTimestamp(row.revoked_at, "revoked_at"),
+    current: context.deviceId === deviceId,
+  };
+}
+
+function deviceIdValue(value: unknown, label: string): string {
+  if (typeof value !== "string" || !DEVICE_ID_PATTERN.test(value)) {
+    throw new DeviceSchemaError(`${label}_invalid`);
+  }
+  return value;
+}
+
+function publicKeyValue(value: unknown): string {
+  if (typeof value !== "string" || !PUBLIC_KEY_PATTERN.test(value)) {
+    throw new DeviceSchemaError("public_key_invalid");
+  }
+  return value.toLowerCase();
+}
+
+function deviceText(value: unknown, label: string): string {
+  if (typeof value !== "string") {
+    throw new DeviceSchemaError(`${label}_invalid`);
+  }
+  const trimmed = value.trim();
+  if (!DEVICE_TEXT_PATTERN.test(trimmed)) {
+    throw new DeviceSchemaError(`${label}_invalid`);
+  }
+  return trimmed;
+}
+
+function approvalStatus(value: unknown): DeviceDocument["approval_status"] {
+  if (typeof value !== "string" || !APPROVAL_STATUS.has(value)) {
+    throw new DeviceSchemaError("approval_status_invalid");
+  }
+  return value as DeviceDocument["approval_status"];
+}
+
+function nullableTimestamp(value: unknown, label: string): number | null {
+  if (value === null) {
+    return null;
+  }
+  return timestamp(value, label);
+}
+
+function timestamp(value: unknown, label: string): number {
+  if (typeof value !== "number" || !Number.isSafeInteger(value) || value < 0) {
+    throw new DeviceSchemaError(`${label}_invalid`);
+  }
+  return value;
+}