feat(auth): интегрировать SSO auth-portal

JWT на backend, handoff/callback на UI, RBAC mm:*, AUTH_* в compose.

Co-authored-by: Cursor <[email protected]>

backend/src/plugins/auth.ts

@@ -0,0 +1,119 @@
+import type { FastifyInstance, FastifyReply, FastifyRequest } from "fastify"
+import fp from "fastify-plugin"
+import { env } from "../config.js"
+import {
+  hasPermission,
+  permissionForRequest,
+  type AuthUser,
+} from "../lib/permissions.js"
+
+declare module "fastify" {
+  interface FastifyRequest {
+    authUser?: AuthUser
+  }
+}
+
+declare module "@fastify/jwt" {
+  interface FastifyJWT {
+    payload: {
+      sub: string
+      email?: string
+      name?: string
+      apps?: string[]
+      permissions?: string[]
+      is_admin?: boolean
+      iss?: string
+      exp?: number
+    }
+    user: {
+      sub: string
+      email?: string
+      name?: string
+      apps?: string[]
+      permissions?: string[]
+      is_admin?: boolean
+      iss?: string
+      exp?: number
+    }
+  }
+}
+
+async function authPlugin(app: FastifyInstance) {
+  if (env.authRequired && env.jwtSecret.length < 8) {
+    throw new Error("AUTH_JWT_SECRET / JWT_SECRET required when AUTH_REQUIRED=true")
+  }
+
+  await app.register(import("@fastify/jwt"), {
+    secret: env.jwtSecret,
+    ...(env.authRequired
+      ? {
+          verify: {
+            allowedIss: [env.authIssuer],
+          },
+        }
+      : {}),
+  })
+
+  if (env.authRequired) {
+    app.log.info(
+      { issuer: env.authIssuer, portal: env.authPortalUrl },
+      "AUTH_REQUIRED=true — portal JWT middleware enabled",
+    )
+  } else {
+    app.log.info("AUTH_REQUIRED=false — /api/* open without JWT")
+  }
+}
+
+/**
+ * Protect /api/* when AUTH_REQUIRED=true.
+ * Public: /health, /api/auth/config
+ */
+export async function requireAuth(
+  request: FastifyRequest,
+  reply: FastifyReply,
+): Promise<void> {
+  if (!env.authRequired) return
+
+  const pathname = (request.url.split("?")[0] ?? request.url)
+  if (pathname === "/api/auth/config") return
+
+  const authHeader = request.headers.authorization ?? ""
+  const token = authHeader.startsWith("Bearer ") ? authHeader.slice(7) : ""
+  if (!token) {
+    return reply.code(401).send({ error: "Unauthorized" })
+  }
+
+  try {
+    await request.jwtVerify()
+  } catch {
+    return reply.code(401).send({ error: "Unauthorized" })
+  }
+
+  const payload = request.user
+  const apps = Array.isArray(payload.apps) ? payload.apps.map(String) : []
+  const permissions = Array.isArray(payload.permissions)
+    ? payload.permissions.map(String)
+    : []
+
+  if (!apps.includes("mm")) {
+    return reply
+      .code(403)
+      .send({ error: "Нет доступа к приложению MikrotikManager" })
+  }
+
+  request.authUser = {
+    id: String(payload.sub),
+    email: String(payload.email ?? ""),
+    name: String(payload.name ?? ""),
+    apps,
+    permissions,
+    isAdmin: Boolean(payload.is_admin),
+  }
+
+  const required = permissionForRequest(request.method, pathname)
+  if (required && !hasPermission(permissions, required)) {
+    return reply.code(403).send({ error: `Недостаточно прав: ${required}` })
+  }
+}
+
+export default fp(authPlugin, { name: "auth" })