const ObservableStore = require('obs-store') const extend = require('xtend') const PhishingDetector = require('eth-phishing-detect/src/detector') // compute phishing lists const PHISHING_DETECTION_CONFIG = require('eth-phishing-detect/src/config.json') // every four minutes const POLLING_INTERVAL = 4 * 60 * 1000 class BlacklistController { constructor (opts = {}) { const initState = extend({ phishing: PHISHING_DETECTION_CONFIG, }, opts.initState) this.store = new ObservableStore(initState) // phishing detector this._phishingDetector = null this._setupPhishingDetector(initState.phishing) // polling references this._phishingUpdateIntervalRef = null } // // PUBLIC METHODS // checkForPhishing (hostname) { if (!hostname) return false const { result } = this._phishingDetector.check(hostname) return result } async updatePhishingList () { const response = await fetch('https://api.infura.io/v2/blacklist') const phishing = await response.json() this.store.updateState({ phishing }) this._setupPhishingDetector(phishing) return phishing } scheduleUpdates () { if (this._phishingUpdateIntervalRef) return this.updatePhishingList().catch(log.warn) this._phishingUpdateIntervalRef = setInterval(() => { this.updatePhishingList().catch(log.warn) }, POLLING_INTERVAL) } // // PRIVATE METHODS // _setupPhishingDetector (config) { this._phishingDetector = new PhishingDetector(config) } } module.exports = BlacklistController