102 lines
3.7 KiB
JavaScript
102 lines
3.7 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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this.EXPORTED_SYMBOLS = [ "Feeds" ];
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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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XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
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"resource://gre/modules/BrowserUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
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"resource:///modules/RecentWindow.jsm");
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const { interfaces: Ci, classes: Cc } = Components;
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this.Feeds = {
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init() {
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let mm = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
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mm.addMessageListener("WCCR:registerProtocolHandler", this);
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Services.ppmm.addMessageListener("WCCR:setAutoHandler", this);
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Services.ppmm.addMessageListener("FeedConverter:addLiveBookmark", this);
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},
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receiveMessage(aMessage) {
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let data = aMessage.data;
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switch (aMessage.name) {
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case "WCCR:registerProtocolHandler": {
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let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
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getService(Ci.nsIWebContentHandlerRegistrar);
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registrar.registerProtocolHandler(data.protocol, data.uri, data.title,
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aMessage.target);
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break;
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}
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case "WCCR:registerContentHandler": {
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let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
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getService(Ci.nsIWebContentHandlerRegistrar);
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registrar.registerContentHandler(data.contentType, data.uri, data.title,
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aMessage.target);
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break;
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}
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case "WCCR:setAutoHandler": {
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let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
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getService(Ci.nsIWebContentHandlerRegistrar);
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registrar.setAutoHandler(data.contentType, data.handler);
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break;
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}
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case "FeedConverter:addLiveBookmark": {
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let topWindow = RecentWindow.getMostRecentBrowserWindow();
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topWindow.PlacesCommandHook.addLiveBookmark(data.spec, data.title, data.subtitle)
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.catch(Components.utils.reportError);
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break;
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}
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}
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},
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/**
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* isValidFeed: checks whether the given data represents a valid feed.
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*
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* @param aLink
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* An object representing a feed with title, href and type.
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* @param aPrincipal
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* The principal of the document, used for security check.
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* @param aIsFeed
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* Whether this is already a known feed or not, if true only a security
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* check will be performed.
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*/
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isValidFeed: function(aLink, aPrincipal, aIsFeed) {
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if (!aLink || !aPrincipal)
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return false;
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var type = aLink.type.toLowerCase().replace(/^\s+|\s*(?:;.*)?$/g, "");
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if (!aIsFeed) {
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aIsFeed = (type == "application/rss+xml" ||
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type == "application/atom+xml");
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}
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if (aIsFeed) {
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// re-create the principal as it may be a CPOW.
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let principalURI = BrowserUtils.makeURIFromCPOW(aPrincipal.URI);
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let principalToCheck =
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Services.scriptSecurityManager.createCodebasePrincipal(principalURI, {});
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try {
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BrowserUtils.urlSecurityCheck(aLink.href, principalToCheck,
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Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
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return type || "application/rss+xml";
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}
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catch(ex) {
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}
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}
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return null;
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},
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};
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