101 lines
3.4 KiB
JavaScript
101 lines
3.4 KiB
JavaScript
/* 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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const Cc = Components.classes;
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const Ci = Components.interfaces;
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const Cr = Components.results;
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const XPI_CONTENT_TYPE = "application/x-xpinstall";
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const MSG_INSTALL_ADDONS = "WebInstallerInstallAddonsFromWebpage";
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Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
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Components.utils.import("resource://gre/modules/Services.jsm");
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function amContentHandler() {
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}
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amContentHandler.prototype = {
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/**
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* Handles a new request for an application/x-xpinstall file.
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*
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* @param aMimetype
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* The mimetype of the file
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* @param aContext
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* The context passed to nsIChannel.asyncOpen
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* @param aRequest
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* The nsIRequest dealing with the content
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*/
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handleContent: function(aMimetype, aContext, aRequest) {
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if (aMimetype != XPI_CONTENT_TYPE)
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throw Cr.NS_ERROR_WONT_HANDLE_CONTENT;
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if (!(aRequest instanceof Ci.nsIChannel))
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throw Cr.NS_ERROR_WONT_HANDLE_CONTENT;
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let uri = aRequest.URI;
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let window = null;
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let callbacks = aRequest.notificationCallbacks ?
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aRequest.notificationCallbacks :
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aRequest.loadGroup.notificationCallbacks;
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if (callbacks)
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window = callbacks.getInterface(Ci.nsIDOMWindow);
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aRequest.cancel(Cr.NS_BINDING_ABORTED);
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let installs = {
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uris: [uri.spec],
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hashes: [null],
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names: [null],
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icons: [null],
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mimetype: XPI_CONTENT_TYPE,
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triggeringPrincipal: aRequest.loadInfo.triggeringPrincipal,
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callbackID: -1
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};
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if (Services.appinfo.processType == Ci.nsIXULRuntime.PROCESS_TYPE_DEFAULT) {
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// When running in the main process this might be a frame inside an
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// in-content UI page, walk up to find the first frame element in a chrome
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// privileged document
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let element = window.frameElement;
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let ssm = Services.scriptSecurityManager;
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while (element && !ssm.isSystemPrincipal(element.ownerDocument.nodePrincipal))
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element = element.ownerDocument.defaultView.frameElement;
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if (element) {
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let listener = Cc["@mozilla.org/addons/integration;1"].
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getService(Ci.nsIMessageListener);
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listener.wrappedJSObject.receiveMessage({
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name: MSG_INSTALL_ADDONS,
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target: element,
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data: installs,
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});
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return;
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}
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}
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// Fall back to sending through the message manager
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let messageManager = window.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIDocShell)
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.QueryInterface(Ci.nsIInterfaceRequestor)
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.getInterface(Ci.nsIContentFrameMessageManager);
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messageManager.sendAsyncMessage(MSG_INSTALL_ADDONS, installs);
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},
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classID: Components.ID("{7beb3ba8-6ec3-41b4-b67c-da89b8518922}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentHandler]),
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log : function(aMsg) {
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let msg = "amContentHandler.js: " + (aMsg.join ? aMsg.join("") : aMsg);
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Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService).
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logStringMessage(msg);
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dump(msg + "\n");
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}
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([amContentHandler]);
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