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-rw-r--r--toolkit/mozapps/webextensions/amContentHandler.js100
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diff --git a/toolkit/mozapps/webextensions/amContentHandler.js b/toolkit/mozapps/webextensions/amContentHandler.js
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+++ b/toolkit/mozapps/webextensions/amContentHandler.js
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+/* 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 Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+
+const XPI_CONTENT_TYPE = "application/x-xpinstall";
+const MSG_INSTALL_ADDONS = "WebInstallerInstallAddonsFromWebpage";
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+function amContentHandler() {
+}
+
+amContentHandler.prototype = {
+ /**
+ * Handles a new request for an application/x-xpinstall file.
+ *
+ * @param aMimetype
+ * The mimetype of the file
+ * @param aContext
+ * The context passed to nsIChannel.asyncOpen
+ * @param aRequest
+ * The nsIRequest dealing with the content
+ */
+ handleContent: function(aMimetype, aContext, aRequest) {
+ if (aMimetype != XPI_CONTENT_TYPE)
+ throw Cr.NS_ERROR_WONT_HANDLE_CONTENT;
+
+ if (!(aRequest instanceof Ci.nsIChannel))
+ throw Cr.NS_ERROR_WONT_HANDLE_CONTENT;
+
+ let uri = aRequest.URI;
+
+ let window = null;
+ let callbacks = aRequest.notificationCallbacks ?
+ aRequest.notificationCallbacks :
+ aRequest.loadGroup.notificationCallbacks;
+ if (callbacks)
+ window = callbacks.getInterface(Ci.nsIDOMWindow);
+
+ aRequest.cancel(Cr.NS_BINDING_ABORTED);
+
+ let installs = {
+ uris: [uri.spec],
+ hashes: [null],
+ names: [null],
+ icons: [null],
+ mimetype: XPI_CONTENT_TYPE,
+ triggeringPrincipal: aRequest.loadInfo.triggeringPrincipal,
+ callbackID: -1
+ };
+
+ 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);
+ listener.wrappedJSObject.receiveMessage({
+ name: MSG_INSTALL_ADDONS,
+ target: element,
+ data: installs,
+ });
+ return;
+ }
+ }
+
+ // Fall back to sending through the message manager
+ let messageManager = window.QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIDocShell)
+ .QueryInterface(Ci.nsIInterfaceRequestor)
+ .getInterface(Ci.nsIContentFrameMessageManager);
+
+ messageManager.sendAsyncMessage(MSG_INSTALL_ADDONS, installs);
+ },
+
+ classID: Components.ID("{7beb3ba8-6ec3-41b4-b67c-da89b8518922}"),
+ QueryInterface: XPCOMUtils.generateQI([Ci.nsIContentHandler]),
+
+ log : function(aMsg) {
+ let msg = "amContentHandler.js: " + (aMsg.join ? aMsg.join("") : aMsg);
+ Cc["@mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService).
+ logStringMessage(msg);
+ dump(msg + "\n");
+ }
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([amContentHandler]);