1 files changed, 104 insertions, 0 deletions
diff --git a/browser/modules/Feeds.jsm b/browser/modules/Feeds.jsm
new file mode 100644
index 000000000..179d2b83d
--- /dev/null
+++ b/browser/modules/Feeds.jsm
@@ -0,0 +1,104 @@
+/* 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");
+Components.utils.import("resource://gre/modules/Services.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
+                                  "resource://gre/modules/BrowserUtils.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "RecentWindow",
+                                  "resource:///modules/RecentWindow.jsm");
+
+const { interfaces: Ci, classes: Cc } = Components;
+
+this.Feeds = {
+  init() {
+    let mm = Cc["@mozilla.org/globalmessagemanager;1"].getService(Ci.nsIMessageListenerManager);
+    mm.addMessageListener("WCCR:registerProtocolHandler", this);
+    mm.addMessageListener("WCCR:registerContentHandler", this);
+
+    Services.ppmm.addMessageListener("WCCR:setAutoHandler", this);
+    Services.ppmm.addMessageListener("FeedConverter:addLiveBookmark", this);
+  },
+
+  receiveMessage(aMessage) {
+    let data = aMessage.data;
+    switch (aMessage.name) {
+      case "WCCR:registerProtocolHandler": {
+        let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+                          getService(Ci.nsIWebContentHandlerRegistrar);
+        registrar.registerProtocolHandler(data.protocol, data.uri, data.title,
+                                          aMessage.target);
+        break;
+      }
+
+      case "WCCR:registerContentHandler": {
+        let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+                          getService(Ci.nsIWebContentHandlerRegistrar);
+        registrar.registerContentHandler(data.contentType, data.uri, data.title,
+                                         aMessage.target);
+        break;
+      }
+
+      case "WCCR:setAutoHandler": {
+        let registrar = Cc["@mozilla.org/embeddor.implemented/web-content-handler-registrar;1"].
+                          getService(Ci.nsIWebContentConverterService);
+        registrar.setAutoHandler(data.contentType, data.handler);
+        break;
+      }
+
+      case "FeedConverter:addLiveBookmark": {
+        let topWindow = RecentWindow.getMostRecentBrowserWindow();
+        topWindow.PlacesCommandHook.addLiveBookmark(data.spec, data.title, data.subtitle)
+                                   .catch(Components.utils.reportError);
+        break;
+      }
+    }
+  },
+
+  /**
+   * 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) {
+      // re-create the principal as it may be a CPOW.
+      // once this can't be a CPOW anymore, we should just use aPrincipal instead
+      // of creating a new one.
+      let principalURI = BrowserUtils.makeURIFromCPOW(aPrincipal.URI);
+      let principalToCheck =
+        Services.scriptSecurityManager.createCodebasePrincipal(principalURI, aPrincipal.originAttributes);
+      try {
+        BrowserUtils.urlSecurityCheck(aLink.href, principalToCheck,
+                                      Ci.nsIScriptSecurityManager.DISALLOW_INHERIT_PRINCIPAL);
+        return type || "application/rss+xml";
+      }
+      catch (ex) {
+      }
+    }
+
+    return null;
+  },
+
+};