512 lines
38 KiB
JavaScript
512 lines
38 KiB
JavaScript
import * as plugins from '../plugins.js';
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import * as paths from '../paths.js';
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import { logger } from '../logger.js';
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import { SecurityLogger, SecurityLogLevel, SecurityEventType } from './classes.securitylogger.js';
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import { LRUCache } from 'lru-cache';
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/**
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* Reputation threshold scores
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*/
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export var ReputationThreshold;
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(function (ReputationThreshold) {
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ReputationThreshold[ReputationThreshold["HIGH_RISK"] = 20] = "HIGH_RISK";
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ReputationThreshold[ReputationThreshold["MEDIUM_RISK"] = 50] = "MEDIUM_RISK";
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ReputationThreshold[ReputationThreshold["LOW_RISK"] = 80] = "LOW_RISK"; // Score below this is considered low risk (but not trusted)
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})(ReputationThreshold || (ReputationThreshold = {}));
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/**
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* IP type classifications
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*/
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export var IPType;
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(function (IPType) {
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IPType["RESIDENTIAL"] = "residential";
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IPType["DATACENTER"] = "datacenter";
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IPType["PROXY"] = "proxy";
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IPType["TOR"] = "tor";
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IPType["VPN"] = "vpn";
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IPType["UNKNOWN"] = "unknown";
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})(IPType || (IPType = {}));
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/**
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* Class for checking IP reputation of inbound email senders
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*/
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export class IPReputationChecker {
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static instance;
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reputationCache;
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options;
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storageManager; // StorageManager instance
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// Default DNSBL servers
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static DEFAULT_DNSBL_SERVERS = [
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'zen.spamhaus.org', // Spamhaus
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'bl.spamcop.net', // SpamCop
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'b.barracudacentral.org', // Barracuda
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'spam.dnsbl.sorbs.net', // SORBS
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'dnsbl.sorbs.net', // SORBS (expanded)
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'cbl.abuseat.org', // Composite Blocking List
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'xbl.spamhaus.org', // Spamhaus XBL
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'pbl.spamhaus.org', // Spamhaus PBL
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'dnsbl-1.uceprotect.net', // UCEPROTECT
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'psbl.surriel.com' // PSBL
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];
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// Default options
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static DEFAULT_OPTIONS = {
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maxCacheSize: 10000,
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cacheTTL: 24 * 60 * 60 * 1000, // 24 hours
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dnsblServers: IPReputationChecker.DEFAULT_DNSBL_SERVERS,
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highRiskThreshold: ReputationThreshold.HIGH_RISK,
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mediumRiskThreshold: ReputationThreshold.MEDIUM_RISK,
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lowRiskThreshold: ReputationThreshold.LOW_RISK,
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enableLocalCache: true,
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enableDNSBL: true,
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enableIPInfo: true
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};
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/**
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* Constructor for IPReputationChecker
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* @param options Configuration options
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* @param storageManager Optional StorageManager instance for persistence
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*/
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constructor(options = {}, storageManager) {
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// Merge with default options
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this.options = {
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...IPReputationChecker.DEFAULT_OPTIONS,
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...options
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};
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this.storageManager = storageManager;
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// If no storage manager provided, log warning
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if (!storageManager && this.options.enableLocalCache) {
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logger.log('warn', '⚠️ WARNING: IPReputationChecker initialized without StorageManager.\n' +
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' IP reputation cache will only be stored to filesystem.\n' +
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' Consider passing a StorageManager instance for better storage flexibility.');
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}
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// Initialize reputation cache
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this.reputationCache = new LRUCache({
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max: this.options.maxCacheSize,
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ttl: this.options.cacheTTL, // Cache TTL
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});
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// Load cache from disk if enabled
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if (this.options.enableLocalCache) {
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// Fire and forget the load operation
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this.loadCache().catch(error => {
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logger.log('error', `Failed to load IP reputation cache during initialization: ${error.message}`);
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});
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}
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}
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/**
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* Get the singleton instance of the checker
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* @param options Configuration options
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* @param storageManager Optional StorageManager instance for persistence
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* @returns Singleton instance
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*/
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static getInstance(options = {}, storageManager) {
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if (!IPReputationChecker.instance) {
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IPReputationChecker.instance = new IPReputationChecker(options, storageManager);
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}
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return IPReputationChecker.instance;
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}
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/**
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* Check an IP address's reputation
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* @param ip IP address to check
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* @returns Reputation check result
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*/
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async checkReputation(ip) {
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try {
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// Validate IP address format
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if (!this.isValidIPAddress(ip)) {
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logger.log('warn', `Invalid IP address format: ${ip}`);
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return this.createErrorResult(ip, 'Invalid IP address format');
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}
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// Check cache first
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const cachedResult = this.reputationCache.get(ip);
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if (cachedResult) {
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logger.log('info', `Using cached reputation data for IP ${ip}`, {
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score: cachedResult.score,
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isSpam: cachedResult.isSpam
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});
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return cachedResult;
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}
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// Initialize empty result
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const result = {
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score: 100, // Start with perfect score
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isSpam: false,
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isProxy: false,
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isTor: false,
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isVPN: false,
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timestamp: Date.now()
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};
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// Check IP against DNS blacklists if enabled
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if (this.options.enableDNSBL) {
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const dnsblResult = await this.checkDNSBL(ip);
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// Update result with DNSBL information
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result.score -= dnsblResult.listCount * 10; // Subtract 10 points per blacklist
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result.isSpam = dnsblResult.listCount > 0;
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result.blacklists = dnsblResult.lists;
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}
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// Get additional IP information if enabled
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if (this.options.enableIPInfo) {
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const ipInfo = await this.getIPInfo(ip);
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// Update result with IP info
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result.country = ipInfo.country;
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result.asn = ipInfo.asn;
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result.org = ipInfo.org;
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// Adjust score based on IP type
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if (ipInfo.type === IPType.PROXY || ipInfo.type === IPType.TOR || ipInfo.type === IPType.VPN) {
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result.score -= 30; // Subtract 30 points for proxies, Tor, VPNs
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// Set proxy flags
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result.isProxy = ipInfo.type === IPType.PROXY;
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result.isTor = ipInfo.type === IPType.TOR;
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result.isVPN = ipInfo.type === IPType.VPN;
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}
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}
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// Ensure score is between 0 and 100
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result.score = Math.max(0, Math.min(100, result.score));
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// Update cache with result
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this.reputationCache.set(ip, result);
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// Save cache if enabled
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if (this.options.enableLocalCache) {
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// Fire and forget the save operation
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this.saveCache().catch(error => {
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logger.log('error', `Failed to save IP reputation cache: ${error.message}`);
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});
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}
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// Log the reputation check
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this.logReputationCheck(ip, result);
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return result;
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}
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catch (error) {
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logger.log('error', `Error checking IP reputation for ${ip}: ${error.message}`, {
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ip,
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stack: error.stack
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});
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return this.createErrorResult(ip, error.message);
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}
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}
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/**
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* Check an IP against DNS blacklists
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* @param ip IP address to check
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* @returns DNSBL check results
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*/
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async checkDNSBL(ip) {
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try {
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// Reverse the IP for DNSBL queries
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const reversedIP = this.reverseIP(ip);
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const results = await Promise.allSettled(this.options.dnsblServers.map(async (server) => {
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try {
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const lookupDomain = `${reversedIP}.${server}`;
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await plugins.dns.promises.resolve(lookupDomain);
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return server; // IP is listed in this DNSBL
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}
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catch (error) {
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if (error.code === 'ENOTFOUND') {
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return null; // IP is not listed in this DNSBL
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}
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throw error; // Other error
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}
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}));
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// Extract successful lookups (listed in DNSBL)
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const lists = results
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.filter((result) => result.status === 'fulfilled' && result.value !== null)
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.map(result => result.value);
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return {
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listCount: lists.length,
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lists
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};
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}
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catch (error) {
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logger.log('error', `Error checking DNSBL for ${ip}: ${error.message}`);
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return {
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listCount: 0,
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lists: []
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};
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}
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}
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/**
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* Get information about an IP address
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* @param ip IP address to check
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* @returns IP information
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*/
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async getIPInfo(ip) {
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try {
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// In a real implementation, this would use an IP data service API
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// For this implementation, we'll use a simplified approach
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// Check if it's a known Tor exit node (simplified)
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const isTor = ip.startsWith('171.25.') || ip.startsWith('185.220.') || ip.startsWith('95.216.');
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// Check if it's a known VPN (simplified)
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const isVPN = ip.startsWith('185.156.') || ip.startsWith('37.120.');
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// Check if it's a known proxy (simplified)
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const isProxy = ip.startsWith('34.92.') || ip.startsWith('34.206.');
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// Determine IP type
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let type = IPType.UNKNOWN;
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if (isTor) {
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type = IPType.TOR;
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}
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else if (isVPN) {
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type = IPType.VPN;
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}
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else if (isProxy) {
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type = IPType.PROXY;
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}
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else {
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// Simple datacenters detection (major cloud providers)
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if (ip.startsWith('13.') || // AWS
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ip.startsWith('35.') || // Google Cloud
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ip.startsWith('52.') || // AWS
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ip.startsWith('34.') || // Google Cloud
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ip.startsWith('104.') // Various providers
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) {
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type = IPType.DATACENTER;
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}
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else {
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type = IPType.RESIDENTIAL;
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}
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}
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// Return the information
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return {
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country: this.determineCountry(ip), // Simplified, would use geolocation service
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asn: 'AS12345', // Simplified, would look up real ASN
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org: this.determineOrg(ip), // Simplified, would use real org data
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type
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};
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}
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catch (error) {
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logger.log('error', `Error getting IP info for ${ip}: ${error.message}`);
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return {
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type: IPType.UNKNOWN
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};
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}
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}
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/**
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* Simplified method to determine country from IP
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* In a real implementation, this would use a geolocation database or service
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* @param ip IP address
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* @returns Country code
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*/
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determineCountry(ip) {
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// Simplified mapping for demo purposes
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if (ip.startsWith('13.') || ip.startsWith('52.'))
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return 'US';
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if (ip.startsWith('35.') || ip.startsWith('34.'))
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return 'US';
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if (ip.startsWith('185.'))
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return 'NL';
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if (ip.startsWith('171.'))
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return 'DE';
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return 'XX'; // Unknown
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}
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/**
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* Simplified method to determine organization from IP
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* In a real implementation, this would use an IP-to-org database or service
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* @param ip IP address
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* @returns Organization name
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*/
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determineOrg(ip) {
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// Simplified mapping for demo purposes
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if (ip.startsWith('13.') || ip.startsWith('52.'))
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return 'Amazon AWS';
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if (ip.startsWith('35.') || ip.startsWith('34.'))
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return 'Google Cloud';
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if (ip.startsWith('185.156.'))
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return 'NordVPN';
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if (ip.startsWith('37.120.'))
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return 'ExpressVPN';
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if (ip.startsWith('185.220.'))
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return 'Tor Exit Node';
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return 'Unknown';
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}
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/**
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* Reverse an IP address for DNSBL lookups (e.g., 1.2.3.4 -> 4.3.2.1)
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* @param ip IP address to reverse
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* @returns Reversed IP for DNSBL queries
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*/
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reverseIP(ip) {
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return ip.split('.').reverse().join('.');
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}
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/**
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* Create an error result for when reputation check fails
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* @param ip IP address
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* @param errorMessage Error message
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* @returns Error result
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*/
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createErrorResult(ip, errorMessage) {
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return {
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score: 50, // Neutral score for errors
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isSpam: false,
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isProxy: false,
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isTor: false,
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isVPN: false,
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timestamp: Date.now(),
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error: errorMessage
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};
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}
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/**
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* Validate IP address format
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* @param ip IP address to validate
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* @returns Whether the IP is valid
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*/
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isValidIPAddress(ip) {
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// IPv4 regex pattern
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const ipv4Pattern = /^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/;
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return ipv4Pattern.test(ip);
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}
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/**
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* Log reputation check to security logger
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* @param ip IP address
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* @param result Reputation result
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*/
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logReputationCheck(ip, result) {
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// Determine log level based on reputation score
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let logLevel = SecurityLogLevel.INFO;
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if (result.score < this.options.highRiskThreshold) {
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logLevel = SecurityLogLevel.WARN;
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}
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else if (result.score < this.options.mediumRiskThreshold) {
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logLevel = SecurityLogLevel.INFO;
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}
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// Log the check
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SecurityLogger.getInstance().logEvent({
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level: logLevel,
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type: SecurityEventType.IP_REPUTATION,
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message: `IP reputation check ${result.isSpam ? 'flagged spam' : 'completed'} for ${ip}`,
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ipAddress: ip,
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details: {
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score: result.score,
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isSpam: result.isSpam,
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isProxy: result.isProxy,
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isTor: result.isTor,
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isVPN: result.isVPN,
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country: result.country,
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blacklists: result.blacklists
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},
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success: !result.isSpam
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});
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}
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/**
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* Save cache to disk or storage manager
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*/
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async saveCache() {
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try {
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// Convert cache entries to serializable array
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const entries = Array.from(this.reputationCache.entries()).map(([ip, data]) => ({
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ip,
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data
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}));
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// Only save if we have entries
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if (entries.length === 0) {
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return;
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}
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const cacheData = JSON.stringify(entries);
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// Save to storage manager if available
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if (this.storageManager) {
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await this.storageManager.set('/security/ip-reputation-cache.json', cacheData);
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logger.log('info', `Saved ${entries.length} IP reputation cache entries to StorageManager`);
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}
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else {
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// Fall back to filesystem
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const cacheDir = plugins.path.join(paths.dataDir, 'security');
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await plugins.smartfs.directory(cacheDir).recursive().create();
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const cacheFile = plugins.path.join(cacheDir, 'ip_reputation_cache.json');
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await plugins.smartfs.file(cacheFile).write(cacheData);
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logger.log('info', `Saved ${entries.length} IP reputation cache entries to disk`);
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}
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}
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catch (error) {
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logger.log('error', `Failed to save IP reputation cache: ${error.message}`);
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}
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}
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/**
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* Load cache from disk or storage manager
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*/
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async loadCache() {
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try {
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let cacheData = null;
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let fromFilesystem = false;
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// Try to load from storage manager first
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if (this.storageManager) {
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try {
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cacheData = await this.storageManager.get('/security/ip-reputation-cache.json');
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if (!cacheData) {
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// Check if data exists in filesystem and migrate it
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const cacheFile = plugins.path.join(paths.dataDir, 'security', 'ip_reputation_cache.json');
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if (plugins.fs.existsSync(cacheFile)) {
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logger.log('info', 'Migrating IP reputation cache from filesystem to StorageManager');
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cacheData = plugins.fs.readFileSync(cacheFile, 'utf8');
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fromFilesystem = true;
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// Migrate to storage manager
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await this.storageManager.set('/security/ip-reputation-cache.json', cacheData);
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logger.log('info', 'IP reputation cache migrated to StorageManager successfully');
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// Optionally delete the old file after successful migration
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try {
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plugins.fs.unlinkSync(cacheFile);
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logger.log('info', 'Old cache file removed after migration');
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}
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catch (deleteError) {
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logger.log('warn', `Could not delete old cache file: ${deleteError.message}`);
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}
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}
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}
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}
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catch (error) {
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logger.log('error', `Error loading from StorageManager: ${error.message}`);
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}
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}
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else {
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// No storage manager, load from filesystem
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const cacheFile = plugins.path.join(paths.dataDir, 'security', 'ip_reputation_cache.json');
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if (plugins.fs.existsSync(cacheFile)) {
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cacheData = plugins.fs.readFileSync(cacheFile, 'utf8');
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fromFilesystem = true;
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}
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}
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// Parse and restore cache if data was found
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if (cacheData) {
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const entries = JSON.parse(cacheData);
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// Validate and filter entries
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const now = Date.now();
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const validEntries = entries.filter(entry => {
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const age = now - entry.data.timestamp;
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return age < this.options.cacheTTL; // Only load entries that haven't expired
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});
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// Restore cache
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for (const entry of validEntries) {
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this.reputationCache.set(entry.ip, entry.data);
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}
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const source = fromFilesystem ? 'disk' : 'StorageManager';
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logger.log('info', `Loaded ${validEntries.length} IP reputation cache entries from ${source}`);
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}
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}
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catch (error) {
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logger.log('error', `Failed to load IP reputation cache: ${error.message}`);
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}
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}
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/**
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* Get the risk level for a reputation score
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* @param score Reputation score (0-100)
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* @returns Risk level description
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*/
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static getRiskLevel(score) {
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if (score < ReputationThreshold.HIGH_RISK) {
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return 'high';
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}
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else if (score < ReputationThreshold.MEDIUM_RISK) {
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return 'medium';
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}
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else if (score < ReputationThreshold.LOW_RISK) {
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return 'low';
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}
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else {
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return 'trusted';
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}
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}
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/**
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* Update the storage manager after instantiation
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* This is useful when the storage manager is not available at construction time
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* @param storageManager The StorageManager instance to use
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*/
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updateStorageManager(storageManager) {
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this.storageManager = storageManager;
|
|
logger.log('info', 'IPReputationChecker storage manager updated');
|
|
// If cache is enabled and we have entries, save them to the new storage manager
|
|
if (this.options.enableLocalCache && this.reputationCache.size > 0) {
|
|
this.saveCache().catch(error => {
|
|
logger.log('error', `Failed to save cache to new storage manager: ${error.message}`);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
//# 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