mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 14:45:29 +00:00
53 lines
1.5 KiB
JavaScript
53 lines
1.5 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";
|
|
|
|
this.EXPORTED_SYMBOLS = [ "Feeds" ];
|
|
|
|
Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
|
|
|
|
XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
|
|
"resource://gre/modules/BrowserUtils.jsm");
|
|
|
|
const Ci = Components.interfaces;
|
|
|
|
this.Feeds = {
|
|
|
|
/**
|
|
* isValidFeed: checks whether the given data represents a valid feed.
|
|
*
|
|
* @param aLink
|
|
* An object representing a feed with title, href and type.
|
|
* @param aPrincipal
|
|
* The principal of the document, used for security check.
|
|
* @param aIsFeed
|
|
* Whether this is already a known feed or not, if true only a security
|
|
* check will be performed.
|
|
*/
|
|
isValidFeed: function(aLink, aPrincipal, aIsFeed) {
|
|
if (!aLink || !aPrincipal)
|
|
return false;
|
|
|
|
var type = aLink.type.toLowerCase().replace(/^\s+|\s*(?:;.*)?$/g, "");
|
|
if (!aIsFeed) {
|
|
aIsFeed = (type == "application/rss+xml" ||
|
|
type == "application/atom+xml");
|
|
}
|
|
|
|
if (aIsFeed) {
|
|
try {
|
|
BrowserUtils.urlSecurityCheck(aLink.href, aPrincipal,
|
|
Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
|
|
return type || "application/rss+xml";
|
|
}
|
|
catch(ex) {
|
|
}
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
};
|