/** * Interceptor * Belongs to Decentraleyes. * * @author Thomas Rientjes * @since 2016-04-06 * @license MPL 2.0 * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this file, * You can obtain one at http://mozilla.org/MPL/2.0/. */ 'use strict'; /** * Interceptor */ var interceptor = {}; /** * Public Methods */ interceptor.handleRequest = function (requestDetails, tabIdentifier, tab) { let validCandidate, tabDomain, targetDetails, targetPath; validCandidate = requestAnalyzer.isValidCandidate(requestDetails, tab); if (!validCandidate) { return { 'cancel': false }; } try { tabDomain = tab.url.match(Address.DOMAIN_EXPRESSION)[1]; tabDomain = requestAnalyzer._normalizeDomain(tabDomain); } catch (exception) { tabDomain = Address.EXAMPLE; } // Temporary list of undetectable tainted domains. let undetectableTaintedDomains = { 'cdnjs.com': true, 'dropbox.com': true, 'glowing-bear.org': true, 'jadi.sk': true, 'minigames.mail.ru': true, 'report-uri.io': true, 'scotthelme.co.uk': true, 'securityheaders.io': true, 'stefansundin.github.io': true, 'udacity.com': true, 'yourvotematters.co.uk': true }; if (undetectableTaintedDomains[tabDomain] || (/yandex\./).test(tabDomain)) { if (tabDomain !== 'yandex.ru') { return interceptor._handleMissingCandidate(requestDetails.url); } } targetDetails = requestAnalyzer.getLocalTarget(requestDetails); targetPath = targetDetails.path; if (!targetPath) { return interceptor._handleMissingCandidate(requestDetails.url); } if (!files[targetPath]) { return interceptor._handleMissingCandidate(requestDetails.url); } stateManager.requests[requestDetails.requestId] = { tabIdentifier, targetDetails }; return { 'redirectUrl': chrome.extension.getURL(targetPath) }; }; /** * Private Methods */ interceptor._handleMissingCandidate = function (requestUrl) { if (interceptor.blockMissing === true) { return { 'cancel': true }; } if (requestUrl.match(Address.HTTP_EXPRESSION)) { let secureRequestUrl = requestUrl.replace(Address.HTTP_EXPRESSION, Address.HTTPS); return { 'redirectUrl': secureRequestUrl }; } else { return { 'cancel': false }; } }; interceptor._handleStorageChanged = function (changes) { if (Setting.BLOCK_MISSING in changes) { interceptor.blockMissing = changes.blockMissing.newValue; } }; /** * Initializations */ interceptor.amountInjected = 0; interceptor.blockMissing = false; chrome.storage.local.get([Setting.AMOUNT_INJECTED, Setting.BLOCK_MISSING], function (items) { interceptor.amountInjected = items.amountInjected || 0; interceptor.blockMissing = items.blockMissing || false; }); /** * Event Handlers */ chrome.storage.onChanged.addListener(interceptor._handleStorageChanged);