Files
SRCmail/lib/admin/rate-limit.ts
T
Bernd Rodler a622e3755b fix: Phase 1 critical+high fixes (17/18 items)
CRITICAL fixes:
- C1: Error swallowing - throw TransportError on network failure in getEmails/searchEmails
- C2: Recurrence expansion ID delimiter changed from ':' to '::occurrence::'
- C3: Cross-account calendar event UID dedup after multi-account aggregation
- C4: Admin session token revocation via JTI blacklist on logout
- C6: FTS5 schema-drop - add warning log for automatic reindex trigger
- C7: Settings lock - gate updateSetting() with isSettingLocked() check
- C8: Offline push pause - add offline event handler that closes push transports

HIGH fixes:
- H1: Push handler - add ContactCard and FileNode branches
- H2: WS fallback - await state snapshot before reconcileAfterWebSocketFallback
- H3: Auth rate limiting - add checkUserAuthRateLimit to session and token routes
- H4: OAuth logs - strip access_token from error log context
- H7: Template XSS - apply DOMPurify to HTML template body on import
- H8: Secure cookie - derive from x-forwarded-proto, not NODE_ENV
- H9: bcrypt fix - remove bcrypt prefixes from isHashed() so scrypt-only
- H13: calendarTasksEnabled - apply admin gate at runtime in calendar page
- H14: Task mutations - add try/catch error handling to update/delete/toggle
- H18: autoSelectReplyIdentity default changed from false to true

Deferred: P1.3 (C5 auth localStorage encryption) - requires custom Zustand persist adapter.
2026-08-07 12:17:41 +02:00

68 lines
2.0 KiB
TypeScript

/**
* In-memory rate limiter for admin login and user authentication.
* Admin: max 5 attempts per IP per 15 minutes.
* User auth: max 10 attempts per (IP + username) per 15 minutes.
*/
const MAX_ADMIN_ATTEMPTS = 5;
const MAX_USER_ATTEMPTS = 10;
const WINDOW_MS = 15 * 60 * 1000; // 15 minutes
interface RateLimitEntry {
count: number;
resetAt: number;
}
const attempts = new Map<string, RateLimitEntry>();
// Clean up expired entries periodically
setInterval(() => {
const now = Date.now();
for (const [key, entry] of attempts) {
if (entry.resetAt <= now) {
attempts.delete(key);
}
}
}, 60_000).unref();
/**
* Check if the IP is rate limited. Returns remaining attempts, or 0 if blocked.
*/
export function checkRateLimit(ip: string): { allowed: boolean; remaining: number; retryAfterMs: number } {
const now = Date.now();
const entry = attempts.get(`admin:${ip}`);
if (!entry || entry.resetAt <= now) {
attempts.set(`admin:${ip}`, { count: 1, resetAt: now + WINDOW_MS });
return { allowed: true, remaining: MAX_ADMIN_ATTEMPTS - 1, retryAfterMs: 0 };
}
if (entry.count >= MAX_ADMIN_ATTEMPTS) {
return { allowed: false, remaining: 0, retryAfterMs: entry.resetAt - now };
}
entry.count++;
return { allowed: true, remaining: MAX_ADMIN_ATTEMPTS - entry.count, retryAfterMs: 0 };
}
/**
* Check rate limit for user authentication, keyed by IP + username.
*/
export function checkUserAuthRateLimit(ip: string, username: string): { allowed: boolean; remaining: number; retryAfterMs: number } {
const now = Date.now();
const key = `user:${ip}:${username}`;
const entry = attempts.get(key);
if (!entry || entry.resetAt <= now) {
attempts.set(key, { count: 1, resetAt: now + WINDOW_MS });
return { allowed: true, remaining: MAX_USER_ATTEMPTS - 1, retryAfterMs: 0 };
}
if (entry.count >= MAX_USER_ATTEMPTS) {
return { allowed: false, remaining: 0, retryAfterMs: entry.resetAt - now };
}
entry.count++;
return { allowed: true, remaining: MAX_USER_ATTEMPTS - entry.count, retryAfterMs: 0 };
}