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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]);
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