gecko-dev/toolkit/mozapps/extensions/amInstallTrigger.js
Dave Townsend e2b946adfc Bug 1226386: Remove functions names where possible. r=rhelmer
We used to need explicit names for functions to make stack traces display
properly. The JS engine is smarter now so doesn't need them and they just
make the code messy and redundant.

--HG--
extra : commitid : 4FEIiQYhRQu
extra : rebase_source : 26689d5417f592d0f327f32076245cb4f154229a
2015-11-19 16:35:41 -08:00

231 lines
7.6 KiB
JavaScript

/* 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";
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/Preferences.jsm");
Cu.import("resource://gre/modules/Log.jsm");
const XPINSTALL_MIMETYPE = "application/x-xpinstall";
const MSG_INSTALL_ENABLED = "WebInstallerIsInstallEnabled";
const MSG_INSTALL_ADDONS = "WebInstallerInstallAddonsFromWebpage";
const MSG_INSTALL_CALLBACK = "WebInstallerInstallCallback";
var log = Log.repository.getLogger("AddonManager.InstallTrigger");
log.level = Log.Level[Preferences.get("extensions.logging.enabled", false) ? "Warn" : "Trace"];
function CallbackObject(id, callback, urls, mediator) {
this.id = id;
this.callback = callback;
this.urls = new Set(urls);
this.callCallback = function(url, status) {
try {
this.callback(url, status);
}
catch (e) {
log.warn("InstallTrigger callback threw an exception: " + e);
}
this.urls.delete(url);
if (this.urls.size == 0)
mediator._callbacks.delete(id);
};
}
function RemoteMediator(windowID) {
this._windowID = windowID;
this._lastCallbackID = 0;
this._callbacks = new Map();
this.mm = Cc["@mozilla.org/childprocessmessagemanager;1"]
.getService(Ci.nsISyncMessageSender);
this.mm.addWeakMessageListener(MSG_INSTALL_CALLBACK, this);
}
RemoteMediator.prototype = {
receiveMessage: function(message) {
if (message.name == MSG_INSTALL_CALLBACK) {
let payload = message.data;
let callbackHandler = this._callbacks.get(payload.callbackID);
if (callbackHandler) {
callbackHandler.callCallback(payload.url, payload.status);
}
}
},
enabled: function(url) {
let params = {
mimetype: XPINSTALL_MIMETYPE
};
return this.mm.sendSyncMessage(MSG_INSTALL_ENABLED, params)[0];
},
install: function(installs, principal, callback, window) {
let callbackID = this._addCallback(callback, installs.uris);
installs.mimetype = XPINSTALL_MIMETYPE;
installs.triggeringPrincipal = principal;
installs.callbackID = callbackID;
if (Services.appinfo.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT) {
// When running in the main process this might be a frame inside an
// in-content UI page, walk up to find the first frame element in a chrome
// privileged document
let element = window.frameElement;
let ssm = Services.scriptSecurityManager;
while (element && !ssm.isSystemPrincipal(element.ownerDocument.nodePrincipal))
element = element.ownerDocument.defaultView.frameElement;
if (element) {
let listener = Cc["@mozilla.org/addons/integration;1"].
getService(Ci.nsIMessageListener);
return listener.wrappedJSObject.receiveMessage({
name: MSG_INSTALL_ADDONS,
target: element,
data: installs,
});
}
}
// Fall back to sending through the message manager
let messageManager = window.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebNavigation)
.QueryInterface(Ci.nsIDocShell)
.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIContentFrameMessageManager);
return messageManager.sendSyncMessage(MSG_INSTALL_ADDONS, installs)[0];
},
_addCallback: function(callback, urls) {
if (!callback || typeof callback != "function")
return -1;
let callbackID = this._windowID + "-" + ++this._lastCallbackID;
let callbackObject = new CallbackObject(callbackID, callback, urls, this);
this._callbacks.set(callbackID, callbackObject);
return callbackID;
},
QueryInterface: XPCOMUtils.generateQI([Ci.nsISupportsWeakReference])
};
function InstallTrigger() {
}
InstallTrigger.prototype = {
// Here be magic. We've declared ourselves as providing the
// nsIDOMGlobalPropertyInitializer interface, and are registered in the
// "JavaScript-global-property" category in the XPCOM category manager. This
// means that for newly created windows, XPCOM will createinstance this
// object, and then call init, passing in the window for which we need to
// provide an instance. We then initialize ourselves and return the webidl
// version of this object using the webidl-provided _create method, which
// XPCOM will then duly expose as a property value on the window. All this
// indirection is necessary because webidl does not (yet) support statics
// (bug 863952). See bug 926712 for more details about this implementation.
init: function(window) {
this._window = window;
this._principal = window.document.nodePrincipal;
this._url = window.document.documentURIObject;
window.QueryInterface(Components.interfaces.nsIInterfaceRequestor);
let utils = window.getInterface(Components.interfaces.nsIDOMWindowUtils);
this._mediator = new RemoteMediator(utils.currentInnerWindowID);
return window.InstallTriggerImpl._create(window, this);
},
enabled: function() {
return this._mediator.enabled(this._url.spec);
},
updateEnabled: function() {
return this.enabled();
},
install: function(installs, callback) {
let installData = {
uris: [],
hashes: [],
names: [],
icons: [],
};
for (let name of Object.keys(installs)) {
let item = installs[name];
if (typeof item === "string") {
item = { URL: item };
}
if (!item.URL) {
throw new this._window.Error("Missing URL property for '" + name + "'");
}
let url = this._resolveURL(item.URL);
if (!this._checkLoadURIFromScript(url)) {
throw new this._window.Error("Insufficient permissions to install: " + url.spec);
}
let iconUrl = null;
if (item.IconURL) {
iconUrl = this._resolveURL(item.IconURL);
if (!this._checkLoadURIFromScript(iconUrl)) {
iconUrl = null; // If page can't load the icon, just ignore it
}
}
installData.uris.push(url.spec);
installData.hashes.push(item.Hash || null);
installData.names.push(name);
installData.icons.push(iconUrl ? iconUrl.spec : null);
}
return this._mediator.install(installData, this._principal, callback, this._window);
},
startSoftwareUpdate: function(url, flags) {
let filename = Services.io.newURI(url, null, null)
.QueryInterface(Ci.nsIURL)
.filename;
let args = {};
args[filename] = { "URL": url };
return this.install(args);
},
installChrome: function(type, url, skin) {
return this.startSoftwareUpdate(url);
},
_resolveURL: function(url) {
return Services.io.newURI(url, null, this._url);
},
_checkLoadURIFromScript: function(uri) {
let secman = Services.scriptSecurityManager;
try {
secman.checkLoadURIWithPrincipal(this._principal,
uri,
secman.DISALLOW_INHERIT_PRINCIPAL);
return true;
}
catch(e) {
return false;
}
},
classID: Components.ID("{9df8ef2b-94da-45c9-ab9f-132eb55fddf1}"),
contractID: "@mozilla.org/addons/installtrigger;1",
QueryInterface: XPCOMUtils.generateQI([Ci.nsISupports, Ci.nsIDOMGlobalPropertyInitializer])
};
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([InstallTrigger]);