From edf1c5ce994f4b9fa2fd0924fc2f4f1ca0d74214 Mon Sep 17 00:00:00 2001
From: Kris Maglione <maglione.k@gmail.com>
Date: Tue, 2 Dec 2008 13:43:55 -0500
Subject: [PATCH] Add muttator/components

---
 muttator/components/chrome-data.js | 87 ++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 muttator/components/chrome-data.js

diff --git a/muttator/components/chrome-data.js b/muttator/components/chrome-data.js
new file mode 100644
index 00000000..e90780c7
--- /dev/null
+++ b/muttator/components/chrome-data.js
@@ -0,0 +1,87 @@
+/* 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: