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/* Adds support for data: URIs with chrome privileges
* and fragment identifiers.
*
* "chrome-data:" <content-type> [; <flag>]* "," [<data>]
*
* By Kris Maglione, ideas from Ed Anuff's nsChromeExtensionHandler.
*
* Licenced under the MIT License, which allows for sublicensing
* under any compatible license, including the GNU GPL and the MPL.
*/
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
const NS_BINDING_ABORTED = 0x804b0002;
const nsIProtocolHandler = Components.interfaces.nsIProtocolHandler;
const ioService = Components.classes["@mozilla.org/network/io-service;1"]
.getService(Components.interfaces.nsIIOService);
let channel = Components.classesByID["{61ba33c0-3031-11d3-8cd0-0060b0fc14a3}"]
.getService(Components.interfaces.nsIProtocolHandler)
.newChannel(ioService.newURI("chrome://liberator/content/data", null, null))
.QueryInterface(Components.interfaces.nsIRequest);
const systemPrincipal = channel.owner;
channel.cancel(NS_BINDING_ABORTED);
delete channel;
var instance;
function ChromeData() {}
ChromeData.prototype = {
contractID: "@mozilla.org/network/protocol;1?name=chrome-data",
classID: Components.ID("{c1b67a07-18f7-4e13-b361-2edcc35a5a0d}"),
classDescription: "Data URIs with chrome privileges",
QueryInterface: XPCOMUtils.generateQI([Components.interfaces.nsIProtocolHandler]),
_xpcom_factory: {
createInstance: function (outer, iid)
{
if (!instance)
instance = new ChromeData();
if (outer != null)
throw Components.results.NS_ERROR_NO_AGGREGATION;
return instance.QueryInterface(iid);
}
},
scheme: "chrome-data",
defaultPort: -1,
allowPort: function (port, scheme) false,
protocolFlags: nsIProtocolHandler.URI_NORELATIVE
| nsIProtocolHandler.URI_NOAUTH
| nsIProtocolHandler.URI_IS_UI_RESOURCE,
newURI: function (spec, charset, baseURI)
{
var uri = Components.classes["@mozilla.org/network/standard-url;1"]
.createInstance(Components.interfaces.nsIStandardURL)
.QueryInterface(Components.interfaces.nsIURI);
uri.init(1, -1, spec, charset, null);
return uri;
},
newChannel: function (uri)
{
try
{
if (uri.scheme == this.scheme)
{
let newURI = ioService.newURI(uri.spec.replace(/^.*?:\/*(.*)(?:#.*)?/, "data:$1"), null, null);
let channel = ioService.newChannelFromURI(newURI);
channel.owner = systemPrincipal;
channel.originalURI = uri;
return channel;
}
}
catch (e) {}
throw Components.results.NS_ERROR_FAILURE;
}
};
var components = [ChromeData];
function NSGetModule(compMgr, fileSpec)
{
return XPCOMUtils.generateModule(components);
}
// vim: set fdm=marker sw=4 ts=4 et:
|
