[Centaury] Remove ExtensionStorage.jsm duplicate after re-import.
Fedor
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9d107e0c8c
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2c2e50bc2c
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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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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this.EXPORTED_SYMBOLS = ["ExtensionStorage"];
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const Ci = Components.interfaces;
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const Cc = Components.classes;
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const Cu = Components.utils;
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const Cr = Components.results;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "OS",
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"resource://gre/modules/osfile.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "AsyncShutdown",
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"resource://gre/modules/AsyncShutdown.jsm");
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function jsonReplacer(key, value) {
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switch (typeof(value)) {
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// Serialize primitive types as-is.
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case "string":
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case "number":
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case "boolean":
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return value;
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case "object":
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if (value === null) {
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return value;
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}
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switch (Cu.getClassName(value, true)) {
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// Serialize arrays and ordinary objects as-is.
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case "Array":
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case "Object":
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return value;
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// Serialize Date objects and regular expressions as their
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// string representations.
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case "Date":
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case "RegExp":
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return String(value);
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}
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break;
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}
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if (!key) {
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// If this is the root object, and we can't serialize it, serialize
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// the value to an empty object.
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return {};
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}
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// Everything else, omit entirely.
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return undefined;
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}
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this.ExtensionStorage = {
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cache: new Map(),
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listeners: new Map(),
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/**
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* Sanitizes the given value, and returns a JSON-compatible
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* representation of it, based on the privileges of the given global.
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*
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* @param {value} value
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* The value to sanitize.
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* @param {Context} context
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* The extension context in which to sanitize the value
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* @returns {value}
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* The sanitized value.
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*/
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sanitize(value, context) {
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let json = context.jsonStringify(value, jsonReplacer);
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return JSON.parse(json);
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},
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getExtensionDir(extensionId) {
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return OS.Path.join(this.extensionDir, extensionId);
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},
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getStorageFile(extensionId) {
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return OS.Path.join(this.extensionDir, extensionId, "storage.js");
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},
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read(extensionId) {
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if (this.cache.has(extensionId)) {
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return this.cache.get(extensionId);
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}
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let path = this.getStorageFile(extensionId);
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let decoder = new TextDecoder();
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let promise = OS.File.read(path);
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promise = promise.then(array => {
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return JSON.parse(decoder.decode(array));
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}).catch((error) => {
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if (!error.becauseNoSuchFile) {
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Cu.reportError("Unable to parse JSON data for extension storage.");
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}
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return {};
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});
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this.cache.set(extensionId, promise);
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return promise;
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},
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write(extensionId) {
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let promise = this.read(extensionId).then(extData => {
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let encoder = new TextEncoder();
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let array = encoder.encode(JSON.stringify(extData));
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let path = this.getStorageFile(extensionId);
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OS.File.makeDir(this.getExtensionDir(extensionId), {
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ignoreExisting: true,
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from: OS.Constants.Path.profileDir,
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});
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let promise = OS.File.writeAtomic(path, array);
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return promise;
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}).catch(() => {
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// Make sure this promise is never rejected.
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Cu.reportError("Unable to write JSON data for extension storage.");
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});
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AsyncShutdown.profileBeforeChange.addBlocker(
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"ExtensionStorage: Finish writing extension data",
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promise);
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return promise.then(() => {
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AsyncShutdown.profileBeforeChange.removeBlocker(promise);
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});
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},
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set(extensionId, items, context) {
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return this.read(extensionId).then(extData => {
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let changes = {};
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for (let prop in items) {
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let item = this.sanitize(items[prop], context);
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changes[prop] = {oldValue: extData[prop], newValue: item};
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extData[prop] = item;
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}
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this.notifyListeners(extensionId, changes);
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return this.write(extensionId);
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});
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},
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remove(extensionId, items) {
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return this.read(extensionId).then(extData => {
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let changes = {};
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for (let prop of [].concat(items)) {
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changes[prop] = {oldValue: extData[prop]};
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delete extData[prop];
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}
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this.notifyListeners(extensionId, changes);
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return this.write(extensionId);
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});
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},
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clear(extensionId) {
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return this.read(extensionId).then(extData => {
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let changes = {};
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for (let prop of Object.keys(extData)) {
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changes[prop] = {oldValue: extData[prop]};
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delete extData[prop];
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}
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this.notifyListeners(extensionId, changes);
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return this.write(extensionId);
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});
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},
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get(extensionId, keys) {
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return this.read(extensionId).then(extData => {
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let result = {};
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if (keys === null) {
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Object.assign(result, extData);
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} else if (typeof(keys) == "object" && !Array.isArray(keys)) {
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for (let prop in keys) {
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if (prop in extData) {
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result[prop] = extData[prop];
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} else {
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result[prop] = keys[prop];
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}
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}
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} else {
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for (let prop of [].concat(keys)) {
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if (prop in extData) {
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result[prop] = extData[prop];
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}
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}
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}
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return result;
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});
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},
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addOnChangedListener(extensionId, listener) {
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let listeners = this.listeners.get(extensionId) || new Set();
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listeners.add(listener);
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this.listeners.set(extensionId, listeners);
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},
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removeOnChangedListener(extensionId, listener) {
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let listeners = this.listeners.get(extensionId);
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listeners.delete(listener);
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},
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notifyListeners(extensionId, changes) {
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let listeners = this.listeners.get(extensionId);
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if (listeners) {
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for (let listener of listeners) {
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listener(changes);
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}
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}
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},
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init() {
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if (Services.appinfo.processType != Services.appinfo.PROCESS_TYPE_DEFAULT) {
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return;
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}
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Services.obs.addObserver(this, "extension-invalidate-storage-cache", false);
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Services.obs.addObserver(this, "xpcom-shutdown", false);
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},
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observe(subject, topic, data) {
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if (topic == "xpcom-shutdown") {
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Services.obs.removeObserver(this, "extension-invalidate-storage-cache");
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Services.obs.removeObserver(this, "xpcom-shutdown");
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} else if (topic == "extension-invalidate-storage-cache") {
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this.cache.clear();
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}
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},
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};
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XPCOMUtils.defineLazyGetter(ExtensionStorage, "extensionDir",
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() => OS.Path.join(OS.Constants.Path.profileDir, "browser-extension-data"));
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ExtensionStorage.init();
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@ -10,7 +10,6 @@ EXTRA_JS_MODULES += [
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'ExtensionCommon.jsm',
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'ExtensionContent.jsm',
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'ExtensionManagement.jsm',
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'ExtensionStorage.jsm',
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'LegacyExtensionsUtils.jsm',
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'MessageChannel.jsm',
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'Schemas.jsm',
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