mirror of
https://codeberg.org/nobody/LocalCDN.git
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152 lines
3.3 KiB
JavaScript
152 lines
3.3 KiB
JavaScript
/**
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* Interceptor
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* Belongs to Decentraleyes.
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*
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* @author Thomas Rientjes
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* @since 2016-04-06
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*
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* @author nobody42
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* @since 2020-02-26
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*
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* @license MPL 2.0
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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'use strict';
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/**
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* Interceptor
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*/
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var interceptor = {};
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/**
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* Public Methods
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*/
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interceptor.handleRequest = function (requestDetails, tabIdentifier, tab) {
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let validCandidate, tabDomain, targetDetails, targetPath;
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validCandidate = requestAnalyzer.isValidCandidate(requestDetails, tab);
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if (!validCandidate) {
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return {
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'cancel': false
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};
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}
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tabDomain = helpers.extractDomainFromUrl(tab.url, true);
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if (tabDomain === null) {
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tabDomain = Address.EXAMPLE;
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}
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if (interceptor.taintedDomains[tabDomain] || (/yandex\./).test(tabDomain) ||
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(/wickedlocal\.com/).test(tabDomain)) {
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return interceptor._handleMissingCandidate(requestDetails.url, true);
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}
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targetDetails = requestAnalyzer.getLocalTarget(requestDetails);
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targetPath = targetDetails.path;
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if (!targetDetails) {
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return interceptor._handleMissingCandidate(requestDetails.url);
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}
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stateManager.requests[requestDetails.requestId] = {
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tabIdentifier, targetDetails
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};
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return {
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'redirectUrl': chrome.extension.getURL(targetPath + fileGuard.secret)
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};
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};
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/**
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* Private Methods
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*/
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interceptor._handleMissingCandidate = function (requestUrl, preserveUrl) {
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let requestUrlSegments;
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if (interceptor.blockMissing === true) {
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return {
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'cancel': true
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};
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}
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if (preserveUrl === true) {
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return {
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'cancel': false
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};
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}
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requestUrlSegments = new URL(requestUrl);
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if (requestUrlSegments.protocol === Address.HTTP) {
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requestUrlSegments.protocol = Address.HTTPS;
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requestUrl = requestUrlSegments.toString();
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return {
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'redirectUrl': requestUrl
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};
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} else {
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return {
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'cancel': false
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};
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}
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};
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interceptor._handleStorageChanged = function (changes) {
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if (Setting.XHR_TEST_DOMAIN in changes) {
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interceptor.xhrTestDomain = changes.xhrTestDomain.newValue;
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}
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if (Setting.BLOCK_MISSING in changes) {
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interceptor.blockMissing = changes.blockMissing.newValue;
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}
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};
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/**
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* Initializations
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*/
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// Temporary list of tainted domains.
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interceptor.taintedDomains = {};
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interceptor.amountInjected = 0;
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interceptor.xhrTestDomain = Address.DECENTRALEYES;
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interceptor.blockMissing = false;
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interceptor.relatedSettings = [];
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interceptor.relatedSettings.push(Setting.AMOUNT_INJECTED);
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interceptor.relatedSettings.push(Setting.XHR_TEST_DOMAIN);
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interceptor.relatedSettings.push(Setting.BLOCK_MISSING);
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chrome.storage.sync.get(interceptor.relatedSettings, function (items) {
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interceptor.amountInjected = items.amountInjected || 0;
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interceptor.xhrTestDomain = items.xhrTestDomain || Address.DECENTRALEYES;
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interceptor.blockMissing = items.blockMissing || false;
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});
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/**
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* Event Handlers
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*/
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chrome.storage.onChanged.addListener(interceptor._handleStorageChanged);
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