LocalCDN-Firefox-Chrome-Brave/core/state-manager.js

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/**
* State Manager
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* Belongs to LocalCDN (since 2020-02-26)
* (Origin: Decentraleyes)
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*
* @author Thomas Rientjes
* @since 2017-03-10
*
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* @author nobody
* @since 2020-02-26
*
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* @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';
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/**
* State Manager
*/
var stateManager = {};
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/**
* Public Methods
*/
stateManager.registerInjection = function (tabIdentifier, injection) {
let injectionIdentifier, registeredTab, injectionCount;
injectionIdentifier = injection.source + injection.path + injection.version;
registeredTab = stateManager.tabs[tabIdentifier];
registeredTab.injections[injectionIdentifier] = injection;
injectionCount = Object.keys(registeredTab.injections).length || 0;
if (injectionCount > 0) {
chrome.browserAction.setTitle({
'tabId': tabIdentifier,
'title': `LocalCDN (${injectionCount})`
});
if (stateManager.showIconBadge === true) {
wrappers.setBadgeText({
'tabId': tabIdentifier,
'text': injectionCount.toString()
});
}
}
if (isNaN(storageManager.amountInjected)) {
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storageManager.type.get(Setting.AMOUNT_INJECTED, function (items) {
storageManager.amountInjected = items.amountInjected;
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storageManager.type.set({
[Setting.AMOUNT_INJECTED]: ++storageManager.amountInjected
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});
});
} else {
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chrome.storage.local.set({
[Setting.AMOUNT_INJECTED]: ++storageManager.amountInjected
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});
}
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if (stateManager.internalStatistics) {
stats.setStats(injection);
}
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};
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stateManager.addDomainToAllowlist = function (domain) {
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return new Promise((resolve) => {
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let allowlistedDomains = requestAnalyzer.allowlistedDomains;
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allowlistedDomains[domain] = true;
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storageManager.type.set({allowlistedDomains}, resolve);
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});
};
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stateManager.removeDomainFromAllowlist = function (domain) {
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return new Promise((resolve) => {
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let allowlistedDomains, wildcard;
allowlistedDomains = requestAnalyzer.allowlistedDomains;
wildcard = helpers.getWildcard(domain);
if (allowlistedDomains[domain]) {
delete allowlistedDomains[domain];
} else {
delete allowlistedDomains[wildcard];
}
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storageManager.type.set({allowlistedDomains}, resolve);
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});
};
stateManager.addDomainToManipulateDOMlist = function (domain) {
return new Promise((resolve) => {
let domainsManipulateDOM = requestAnalyzer.domainsManipulateDOM;
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domainsManipulateDOM[domain] = true;
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storageManager.type.set({domainsManipulateDOM}, resolve);
});
};
stateManager.removeDomainFromManipulateDOMlist = function (domain) {
return new Promise((resolve) => {
let domainsManipulateDOM = requestAnalyzer.domainsManipulateDOM;
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delete domainsManipulateDOM[domain];
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storageManager.type.set({domainsManipulateDOM}, resolve);
});
};
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/**
* Private Methods
*/
stateManager._createTab = function (tab) {
let tabIdentifier, requestFilters;
tabIdentifier = tab.id;
stateManager.tabs[tabIdentifier] = {
'injections': {}
};
requestFilters = {
'tabId': tabIdentifier,
'urls': stateManager.validHosts
};
chrome.webRequest.onBeforeRequest.addListener(function (requestDetails) {
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tab = stateManager.tabs[tabIdentifier].details || {};
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return interceptor.handleRequest(requestDetails, tabIdentifier, tab);
}, requestFilters, [WebRequest.BLOCKING]);
};
stateManager._removeTab = function (tabIdentifier) {
delete stateManager.tabs[tabIdentifier];
};
stateManager._updateTab = function (details) {
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let tabDomain, domainIsAllowlisted, frameIdentifier, tabIdentifier;
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tabDomain = helpers.extractDomainFromUrl(details.url, true);
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domainIsAllowlisted = stateManager._domainIsListed(tabDomain);
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frameIdentifier = details.frameId;
tabIdentifier = details.tabId;
if (frameIdentifier !== 0 || tabIdentifier === -1) {
return;
}
chrome.browserAction.setTitle({
'tabId': tabIdentifier,
'title': 'LocalCDN (0)'
});
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if (domainIsAllowlisted) {
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stateManager._setIconDisabled(tabIdentifier);
chrome.browserAction.setTitle({
'tabId': tabIdentifier,
'title': 'LocalCDN ()'
});
}
if (stateManager.showIconBadge === true) {
stateManager._clearBadgeText(tabIdentifier);
}
if (stateManager.tabs[tabIdentifier]) {
stateManager.tabs[tabIdentifier].injections = {};
}
};
stateManager._handleStorageChanged = function (changes) {
if (Setting.SHOW_ICON_BADGE in changes) {
stateManager.showIconBadge = changes.showIconBadge.newValue;
if (changes.showIconBadge.newValue !== true) {
chrome.tabs.query({}, function (tabs) {
tabs.forEach(stateManager._removeIconBadgeFromTab);
});
}
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} else if (Setting.STRIP_METADATA in changes) {
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requestSanitizer.disable();
if (changes.stripMetadata.newValue !== false) {
requestSanitizer.enable();
}
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} else if (Setting.NEGATE_HTML_FILTER_LIST in changes) {
stateManager.getInvertOption = changes.negateHtmlFilterList.newValue;
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} else if (Setting.SELECTED_ICON in changes) {
stateManager.selectedIcon = changes.selectedIcon.newValue;
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} else if (Setting.INTERNAL_STATISTICS in changes) {
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stateManager.internalStatistics = changes.internalStatistics.newValue;
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} else if (Setting.INTERNAL_STATISTICS_DATA in changes) {
stats.data = changes.internalStatisticsData.newValue;
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} else if (Setting.HIDE_DONATION_BUTTON in changes) {
stateManager.hideDonationButton = changes.hideDonationButton.newValue;
}
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};
stateManager._clearBadgeText = function (tabIdentifier) {
wrappers.setBadgeText({
'tabId': tabIdentifier,
'text': ''
});
};
stateManager._removeIconBadgeFromTab = function (tab) {
stateManager._clearBadgeText(tab.id);
};
stateManager._domainIsListed = function (domain, listname) {
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if (domain !== null) {
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let allowlistRecord, isAllowlisted;
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if (listname === 'manipulate-dom') {
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allowlistRecord = requestAnalyzer.domainsManipulateDOM[domain];
isAllowlisted = Boolean(allowlistRecord);
} else {
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allowlistRecord = helpers.checkAllowlisted(domain);
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isAllowlisted = Boolean(allowlistRecord);
}
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return isAllowlisted;
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}
return false;
};
stateManager._setIconDisabled = function (tabIdentifier) {
wrappers.setIcon({
'path': stateManager.selectedIcon,
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'tabId': tabIdentifier
}, 'Disabled');
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};
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/**
* Initializations
*/
stateManager.requests = {};
stateManager.tabs = {};
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stateManager.getInvertOption = false;
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stateManager.validHosts = [];
stateManager.selectedIcon = 'Default';
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stateManager.internalStatistics = false;
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stateManager.hideDonationButton = false;
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for (let mapping in mappings.cdn) {
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let supportedHost = Address.ANY_PROTOCOL + mapping + Address.ANY_PATH;
stateManager.validHosts.push(supportedHost);
}
chrome.tabs.query({}, function (tabs) {
tabs.forEach(stateManager._createTab);
});
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storageManager.type.get([Setting.SHOW_ICON_BADGE, Setting.SELECTED_ICON], function (items) {
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if (items.showIconBadge === undefined) {
items.showIconBadge = true;
}
if (items.selectedIcon === undefined) {
stateManager.selectedIcon = 'Default';
}
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stateManager.showIconBadge = items.showIconBadge;
stateManager.selectedIcon = items.selectedIcon;
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});
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chrome.storage.local.get([Setting.INTERNAL_STATISTICS], function (items) {
stateManager.internalStatistics = items.internalStatistics;
});
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/**
* Event Handlers
*/
chrome.tabs.onCreated.addListener(stateManager._createTab);
chrome.tabs.onRemoved.addListener(stateManager._removeTab);
chrome.webRequest.onBeforeRequest.addListener(function (requestDetails) {
if (requestDetails.tabId !== -1 && stateManager.tabs[requestDetails.tabId]) {
stateManager.tabs[requestDetails.tabId].details = {
'url': requestDetails.url
};
}
}, {'types': [WebRequestType.MAIN_FRAME], 'urls': [Address.ANY]}, [WebRequest.BLOCKING]);
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chrome.webNavigation.onCommitted.addListener(stateManager._updateTab, {
'url': [{'urlContains': ':'}]
});
chrome.webRequest.onErrorOccurred.addListener(function (requestDetails) {
if (stateManager.requests[requestDetails.requestId]) {
delete stateManager.requests[requestDetails.requestId];
}
}, {'urls': [Address.ANY]});
chrome.webRequest.onBeforeRedirect.addListener(function (requestDetails) {
let knownRequest = stateManager.requests[requestDetails.requestId];
if (knownRequest) {
stateManager.registerInjection(knownRequest.tabIdentifier, knownRequest.targetDetails);
delete stateManager.requests[requestDetails.requestId];
}
}, {'urls': [Address.ANY]});
chrome.storage.onChanged.addListener(stateManager._handleStorageChanged);