376 lines
25 KiB
JavaScript
376 lines
25 KiB
JavaScript
import { readFileSync, writeFileSync } from 'fs';
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import { join } from 'path';
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import { logger, securityLogger } from '../commons/logger.js';
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// Configuration
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const BAN_THRESHOLD = parseInt(process.env.AUTO_BAN_THRESHOLD || '5', 10); // Number of violations before ban
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const VIOLATION_WINDOW_MS = parseInt(process.env.AUTO_BAN_WINDOW_MS || '10000', 10); // 1 minute default
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const VIOLATION_CLEANUP_INTERVAL = 10000; // Clean up old violations every minute
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console.log('Auto-ban configured with:', {
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threshold: BAN_THRESHOLD,
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window: VIOLATION_WINDOW_MS / 60000,
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cleanupInterval: VIOLATION_CLEANUP_INTERVAL / 60000
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});
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// In-memory violation tracking
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const violations = new Map();
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let banList = {
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bannedIPs: [],
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bannedUserIds: [],
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bannedTokens: [],
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};
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/**
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* Load ban list from JSON file
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*/
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export function loadBanList() {
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try {
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const banListPath = join(process.cwd(), 'config', 'ban.json');
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const data = readFileSync(banListPath, 'utf-8');
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banList = JSON.parse(data);
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return banList;
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}
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catch (error) {
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logger.error({ error }, 'Failed to load ban list');
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return banList;
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}
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}
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/**
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* Save ban list to JSON file
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*/
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function saveBanList() {
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try {
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const banListPath = join(process.cwd(), 'config', 'ban.json');
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writeFileSync(banListPath, JSON.stringify(banList, null, 4), 'utf-8');
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logger.info('Ban list saved');
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}
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catch (error) {
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logger.error({ error }, 'Failed to save ban list');
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}
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}
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/**
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* Get current ban list
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*/
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export function getBanList() {
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return banList;
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}
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/**
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* Check if an IP is banned
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*/
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export function isIPBanned(ip) {
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return banList.bannedIPs.includes(ip);
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}
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/**
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* Check if a user ID is banned
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*/
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export function isUserBanned(userId) {
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return banList.bannedUserIds.includes(userId);
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}
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/**
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* Check if an auth token is banned
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*/
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export function isTokenBanned(token) {
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return banList.bannedTokens.includes(token);
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}
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/**
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* Extract IP address from request
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*/
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export function getClientIP(c) {
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// Check forwarded headers first (for proxies)
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const forwarded = c.req.header('x-forwarded-for');
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if (forwarded) {
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return forwarded.split(',')[0].trim();
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}
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const realIp = c.req.header('x-real-ip');
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if (realIp) {
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return realIp;
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}
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// Fallback to connection IP (works for localhost)
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// In Node.js/Hono, we can try to get the remote address
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try {
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// @ts-ignore - accessing internal request object
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const remoteAddress = c.req.raw?.socket?.remoteAddress || c.env?.ip;
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if (remoteAddress) {
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return remoteAddress;
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}
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}
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catch (e) {
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// Ignore errors
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}
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// Last resort: use localhost identifier
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return '127.0.0.1';
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}
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/**
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* Extract user ID from authorization header
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*/
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function getUserId(c) {
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const authHeader = c.req.header('authorization');
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if (!authHeader)
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return null;
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return authHeader;
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}
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/**
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* Record a rate limit violation
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*/
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export function recordViolation(key) {
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const now = Date.now();
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const existing = violations.get(key);
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if (existing) {
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// Check if violation is within the window
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if (now - existing.firstViolation <= VIOLATION_WINDOW_MS) {
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existing.count++;
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existing.lastViolation = now;
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violations.set(key, existing);
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// Check if threshold exceeded
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if (existing.count >= BAN_THRESHOLD) {
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banEntity(key);
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}
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}
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else {
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// Reset violation count if outside window
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violations.set(key, {
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count: 1,
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firstViolation: now,
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lastViolation: now,
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});
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}
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}
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else {
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// First violation
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violations.set(key, {
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count: 1,
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firstViolation: now,
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lastViolation: now,
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});
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}
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logger.debug({ key, violations: violations.get(key) }, 'Violation recorded');
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}
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/**
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* Ban an entity (IP, user, or token)
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*/
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function banEntity(key) {
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const [type, value] = key.split(':', 2);
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const violationRecord = violations.get(key);
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let added = false;
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if (type === 'ip' && !banList.bannedIPs.includes(value)) {
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banList.bannedIPs.push(value);
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added = true;
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// Log to security.json
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securityLogger.warn({
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event: 'auto_ban',
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type: 'ip',
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ip: value,
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violations: violationRecord?.count,
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firstViolation: violationRecord?.firstViolation,
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lastViolation: violationRecord?.lastViolation
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}, 'IP auto-banned for excessive requests');
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// Also log to console
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logger.info({ ip: value, violations: violationRecord?.count }, '🚫 IP auto-banned for excessive requests');
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}
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else if (type === 'user' && !banList.bannedUserIds.includes(value)) {
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banList.bannedUserIds.push(value);
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added = true;
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// Log to security.json
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securityLogger.warn({
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event: 'auto_ban',
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type: 'user',
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userId: value,
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violations: violationRecord?.count,
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firstViolation: violationRecord?.firstViolation,
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lastViolation: violationRecord?.lastViolation
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}, 'User auto-banned for excessive requests');
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// Also log to console
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logger.info({ userId: value, violations: violationRecord?.count }, '🚫 User auto-banned for excessive requests');
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}
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else if (type === 'token' && !banList.bannedTokens.includes(value)) {
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banList.bannedTokens.push(value);
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added = true;
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// Log to security.json
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securityLogger.warn({
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event: 'auto_ban',
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type: 'token',
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token: value.substring(0, 20) + '...',
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violations: violationRecord?.count,
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firstViolation: violationRecord?.firstViolation,
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lastViolation: violationRecord?.lastViolation
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}, 'Token auto-banned for excessive requests');
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// Also log to console
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logger.info({ token: value.substring(0, 20) + '...', violations: violationRecord?.count }, '🚫 Token auto-banned for excessive requests');
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}
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if (added) {
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saveBanList();
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// Clear violation record after ban
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violations.delete(key);
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}
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}
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/**
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* Clean up old violation records
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*/
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function cleanupViolations() {
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const now = Date.now();
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let cleaned = 0;
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for (const [key, record] of violations.entries()) {
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if (now - record.lastViolation > VIOLATION_WINDOW_MS) {
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violations.delete(key);
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cleaned++;
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}
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}
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if (cleaned > 0) {
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logger.debug({ cleaned }, 'Cleaned up old violation records');
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}
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}
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/**
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* Auto-ban middleware
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* Checks if request is from a banned entity
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*/
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// Simple in-memory rate limiting
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const requestCounts = new Map();
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const RATE_LIMIT_MAX = parseInt(process.env.RATE_LIMIT_MAX || '20', 10);
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const RATE_LIMIT_WINDOW_MS = parseInt(process.env.RATE_LIMIT_WINDOW_MS || '1000', 10);
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export async function autoBanMiddleware(c, next) {
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const ip = getClientIP(c);
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const path = c.req.path;
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const method = c.req.method;
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// Skip ban/rate-limit checks for local requests (dev & e2e tests)
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if (ip === '127.0.0.1' || ip === 'localhost' || ip === '::1' || ip === '::ffff:127.0.0.1') {
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return next();
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}
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const authHeader = c.req.header('authorization');
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const userId = getUserId(c);
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// Generate key for rate limiting
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let key;
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if (authHeader) {
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key = `user:${authHeader}`;
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}
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else {
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key = `ip:${ip}`;
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}
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// Check if IP is banned
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if (isIPBanned(ip)) {
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/*
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securityLogger.info({
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event: 'blocked_request',
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type: 'ip',
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ip,
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path,
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method
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}, 'Blocked request from banned IP')
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*/
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// logger.info({ ip, path }, '🚫 Blocked request from banned IP')
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return c.json({
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error: 'Forbidden',
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message: 'Your IP address has been banned for excessive requests',
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}, 403);
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}
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// Check if auth token is banned
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if (authHeader && isTokenBanned(authHeader)) {
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securityLogger.info({
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event: 'blocked_request',
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type: 'token',
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token: authHeader.substring(0, 20) + '...',
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path,
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method
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}, 'Blocked request from banned token');
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logger.info({ token: authHeader.substring(0, 20) + '...', path }, '🚫 Blocked request from banned token');
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return c.json({
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error: 'Forbidden',
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message: 'Your access token has been banned for excessive requests',
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}, 403);
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}
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// Check if user ID is banned
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if (userId && isUserBanned(userId)) {
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securityLogger.info({
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event: 'blocked_request',
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type: 'user',
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userId,
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path,
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method
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}, 'Blocked request from banned user');
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logger.info({ userId, path }, '🚫 Blocked request from banned user');
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return c.json({
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error: 'Forbidden',
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message: 'Your account has been banned for excessive requests',
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}, 403);
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}
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// Built-in rate limiting (since hono-rate-limiter isn't working)
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const now = Date.now();
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const record = requestCounts.get(key);
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if (record) {
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if (now < record.resetTime) {
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// Within the window
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record.count++;
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if (record.count > RATE_LIMIT_MAX) {
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// Rate limit exceeded!
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console.log(`⚠️ Rate limit exceeded for ${key} (${record.count}/${RATE_LIMIT_MAX})`);
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recordViolation(key);
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return c.json({
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error: 'Too many requests',
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message: `Rate limit exceeded. Maximum ${RATE_LIMIT_MAX} requests per ${RATE_LIMIT_WINDOW_MS}ms`,
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}, 429);
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}
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}
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else {
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// Window expired, reset
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record.count = 1;
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record.resetTime = now + RATE_LIMIT_WINDOW_MS;
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}
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}
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else {
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// First request
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requestCounts.set(key, {
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count: 1,
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resetTime: now + RATE_LIMIT_WINDOW_MS
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});
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}
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await next();
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}
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/**
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* Manually unban an IP
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*/
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export function unbanIP(ip) {
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const index = banList.bannedIPs.indexOf(ip);
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if (index > -1) {
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banList.bannedIPs.splice(index, 1);
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saveBanList();
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securityLogger.info({
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event: 'unban',
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type: 'ip',
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ip
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}, 'IP unbanned');
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logger.info({ ip }, 'IP unbanned');
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return true;
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}
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return false;
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}
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/**
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* Manually unban a user
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*/
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export function unbanUser(userId) {
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const index = banList.bannedUserIds.indexOf(userId);
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if (index > -1) {
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banList.bannedUserIds.splice(index, 1);
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saveBanList();
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securityLogger.info({
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event: 'unban',
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type: 'user',
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userId
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}, 'User unbanned');
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logger.info({ userId }, 'User unbanned');
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return true;
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}
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return false;
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}
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/**
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* Get current violation stats
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*/
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export function getViolationStats() {
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return {
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totalViolations: violations.size,
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violations: Array.from(violations.entries()).map(([key, record]) => ({
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key,
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...record,
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})),
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};
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}
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// Load ban list on module initialization
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loadBanList();
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// Start cleanup interval
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setInterval(cleanupViolations, VIOLATION_CLEANUP_INTERVAL);
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//# 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