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Rename Toolkit's webextensions component directory to better reflect what it is.
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NTD
Roy Tam
parent
6955450f7a
commit
d7d16e7fbb
242 changed files with 4 additions and 2 deletions
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@ -1,321 +0,0 @@
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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 = ["ExtensionManagement"];
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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/AppConstants.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "ExtensionUtils",
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"resource://gre/modules/ExtensionUtils.jsm");
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XPCOMUtils.defineLazyGetter(this, "console", () => ExtensionUtils.getConsole());
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XPCOMUtils.defineLazyGetter(this, "UUIDMap", () => {
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let {UUIDMap} = Cu.import("resource://gre/modules/Extension.jsm", {});
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return UUIDMap;
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});
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/*
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* This file should be kept short and simple since it's loaded even
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* when no extensions are running.
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*/
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// Keep track of frame IDs for content windows. Mostly we can just use
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// the outer window ID as the frame ID. However, the API specifies
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// that top-level windows have a frame ID of 0. So we need to keep
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// track of which windows are top-level. This code listens to messages
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// from ExtensionContent to do that.
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var Frames = {
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// Window IDs of top-level content windows.
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topWindowIds: new Set(),
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init() {
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if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) {
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return;
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}
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Services.mm.addMessageListener("Extension:TopWindowID", this);
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Services.mm.addMessageListener("Extension:RemoveTopWindowID", this, true);
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},
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isTopWindowId(windowId) {
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return this.topWindowIds.has(windowId);
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},
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// Convert an outer window ID to a frame ID. An outer window ID of 0
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// is invalid.
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getId(windowId) {
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if (this.isTopWindowId(windowId)) {
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return 0;
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}
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if (windowId == 0) {
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return -1;
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}
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return windowId;
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},
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// Convert an outer window ID for a parent window to a frame
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// ID. Outer window IDs follow the same convention that
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// |window.top.parent === window.top|. The API works differently,
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// giving a frame ID of -1 for the the parent of a top-level
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// window. This function handles the conversion.
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getParentId(parentWindowId, windowId) {
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if (parentWindowId == windowId) {
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// We have a top-level window.
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return -1;
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}
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// Not a top-level window. Just return the ID as normal.
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return this.getId(parentWindowId);
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},
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receiveMessage({name, data}) {
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switch (name) {
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case "Extension:TopWindowID":
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// FIXME: Need to handle the case where the content process
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// crashes. Right now we leak its top window IDs.
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this.topWindowIds.add(data.windowId);
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break;
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case "Extension:RemoveTopWindowID":
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this.topWindowIds.delete(data.windowId);
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break;
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}
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},
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};
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Frames.init();
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var APIs = {
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apis: new Map(),
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register(namespace, schema, script) {
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if (this.apis.has(namespace)) {
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throw new Error(`API namespace already exists: ${namespace}`);
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}
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this.apis.set(namespace, {schema, script});
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},
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unregister(namespace) {
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if (!this.apis.has(namespace)) {
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throw new Error(`API namespace does not exist: ${namespace}`);
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}
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this.apis.delete(namespace);
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},
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};
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function getURLForExtension(id, path = "") {
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let uuid = UUIDMap.get(id, false);
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if (!uuid) {
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Cu.reportError(`Called getURLForExtension on unmapped extension ${id}`);
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return null;
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}
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return `moz-extension://${uuid}/${path}`;
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}
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// This object manages various platform-level issues related to
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// moz-extension:// URIs. It lives here so that it can be used in both
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// the parent and child processes.
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//
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// moz-extension URIs have the form moz-extension://uuid/path. Each
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// extension has its own UUID, unique to the machine it's installed
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// on. This is easier and more secure than using the extension ID,
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// since it makes it slightly harder to fingerprint for extensions if
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// each user uses different URIs for the extension.
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var Service = {
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initialized: false,
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// Map[uuid -> extension].
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// extension can be an Extension (parent process) or BrowserExtensionContent (child process).
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uuidMap: new Map(),
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init() {
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let aps = Cc["@mozilla.org/addons/policy-service;1"].getService(Ci.nsIAddonPolicyService);
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aps = aps.wrappedJSObject;
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this.aps = aps;
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aps.setExtensionURILoadCallback(this.extensionURILoadableByAnyone.bind(this));
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aps.setExtensionURIToAddonIdCallback(this.extensionURIToAddonID.bind(this));
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},
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// Called when a new extension is loaded.
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startupExtension(uuid, uri, extension) {
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if (!this.initialized) {
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this.initialized = true;
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this.init();
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}
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// Create the moz-extension://uuid mapping.
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let handler = Services.io.getProtocolHandler("moz-extension");
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handler.QueryInterface(Ci.nsISubstitutingProtocolHandler);
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handler.setSubstitution(uuid, uri);
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this.uuidMap.set(uuid, extension);
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this.aps.setAddonHasPermissionCallback(extension.id, extension.hasPermission.bind(extension));
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this.aps.setAddonLoadURICallback(extension.id, this.checkAddonMayLoad.bind(this, extension));
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this.aps.setAddonLocalizeCallback(extension.id, extension.localize.bind(extension));
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this.aps.setAddonCSP(extension.id, extension.manifest.content_security_policy);
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this.aps.setBackgroundPageUrlCallback(uuid, this.generateBackgroundPageUrl.bind(this, extension));
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},
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// Called when an extension is unloaded.
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shutdownExtension(uuid) {
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let extension = this.uuidMap.get(uuid);
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this.uuidMap.delete(uuid);
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this.aps.setAddonHasPermissionCallback(extension.id, null);
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this.aps.setAddonLoadURICallback(extension.id, null);
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this.aps.setAddonLocalizeCallback(extension.id, null);
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this.aps.setAddonCSP(extension.id, null);
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this.aps.setBackgroundPageUrlCallback(uuid, null);
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let handler = Services.io.getProtocolHandler("moz-extension");
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handler.QueryInterface(Ci.nsISubstitutingProtocolHandler);
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handler.setSubstitution(uuid, null);
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},
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// Return true if the given URI can be loaded from arbitrary web
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// content. The manifest.json |web_accessible_resources| directive
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// determines this.
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extensionURILoadableByAnyone(uri) {
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let uuid = uri.host;
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let extension = this.uuidMap.get(uuid);
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if (!extension || !extension.webAccessibleResources) {
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return false;
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}
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let path = uri.QueryInterface(Ci.nsIURL).filePath;
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if (path.length > 0 && path[0] == "/") {
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path = path.substr(1);
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}
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return extension.webAccessibleResources.matches(path);
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},
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// Checks whether a given extension can load this URI (typically via
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// an XML HTTP request). The manifest.json |permissions| directive
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// determines this.
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checkAddonMayLoad(extension, uri) {
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return extension.whiteListedHosts.matchesIgnoringPath(uri);
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},
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generateBackgroundPageUrl(extension) {
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let background_scripts = extension.manifest.background &&
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extension.manifest.background.scripts;
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if (!background_scripts) {
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return;
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}
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let html = "<!DOCTYPE html>\n<body>\n";
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for (let script of background_scripts) {
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script = script.replace(/"/g, """);
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html += `<script src="${script}"></script>\n`;
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}
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html += "</body>\n</html>\n";
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return "data:text/html;charset=utf-8," + encodeURIComponent(html);
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},
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// Finds the add-on ID associated with a given moz-extension:// URI.
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// This is used to set the addonId on the originAttributes for the
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// nsIPrincipal attached to the URI.
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extensionURIToAddonID(uri) {
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let uuid = uri.host;
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let extension = this.uuidMap.get(uuid);
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return extension ? extension.id : undefined;
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},
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};
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// API Levels Helpers
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// Find the add-on associated with this document via the
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// principal's originAttributes. This value is computed by
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// extensionURIToAddonID, which ensures that we don't inject our
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// API into webAccessibleResources or remote web pages.
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function getAddonIdForWindow(window) {
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return Cu.getObjectPrincipal(window).originAttributes.addonId;
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}
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const API_LEVELS = Object.freeze({
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NO_PRIVILEGES: 0,
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CONTENTSCRIPT_PRIVILEGES: 1,
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FULL_PRIVILEGES: 2,
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});
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// Finds the API Level ("FULL_PRIVILEGES", "CONTENTSCRIPT_PRIVILEGES", "NO_PRIVILEGES")
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// with a given a window object.
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function getAPILevelForWindow(window, addonId) {
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const {NO_PRIVILEGES, CONTENTSCRIPT_PRIVILEGES, FULL_PRIVILEGES} = API_LEVELS;
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// Non WebExtension URLs and WebExtension URLs from a different extension
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// has no access to APIs.
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if (!addonId || getAddonIdForWindow(window) != addonId) {
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return NO_PRIVILEGES;
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}
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// Extension pages running in the content process always defaults to
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// "content script API level privileges".
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if (Services.appinfo.processType == Services.appinfo.PROCESS_TYPE_CONTENT) {
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return CONTENTSCRIPT_PRIVILEGES;
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}
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let docShell = window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDocShell);
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// Handling of ExtensionPages running inside sub-frames.
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if (docShell.sameTypeParent) {
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let parentWindow = docShell.sameTypeParent.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDOMWindow);
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// The option page iframe embedded in the about:addons tab should have
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// full API level privileges. (see Bug 1256282 for rationale)
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let parentDocument = parentWindow.document;
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let parentIsSystemPrincipal = Services.scriptSecurityManager
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.isSystemPrincipal(parentDocument.nodePrincipal);
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if (parentDocument.location.href == "about:addons" && parentIsSystemPrincipal) {
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return FULL_PRIVILEGES;
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}
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// The addon iframes embedded in a addon page from with the same addonId
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// should have the same privileges of the sameTypeParent.
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// (see Bug 1258347 for rationale)
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let parentSameAddonPrivileges = getAPILevelForWindow(parentWindow, addonId);
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if (parentSameAddonPrivileges > NO_PRIVILEGES) {
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return parentSameAddonPrivileges;
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}
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// In all the other cases, WebExtension URLs loaded into sub-frame UI
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// will have "content script API level privileges".
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// (see Bug 1214658 for rationale)
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return CONTENTSCRIPT_PRIVILEGES;
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}
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// WebExtension URLs loaded into top frames UI could have full API level privileges.
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return FULL_PRIVILEGES;
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}
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this.ExtensionManagement = {
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startupExtension: Service.startupExtension.bind(Service),
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shutdownExtension: Service.shutdownExtension.bind(Service),
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registerAPI: APIs.register.bind(APIs),
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unregisterAPI: APIs.unregister.bind(APIs),
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getFrameId: Frames.getId.bind(Frames),
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getParentFrameId: Frames.getParentId.bind(Frames),
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getURLForExtension,
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// exported API Level Helpers
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getAddonIdForWindow,
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getAPILevelForWindow,
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API_LEVELS,
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APIs,
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};
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