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lightning-sunbird  0.9+nobinonly
nsDataDocumentContentPolicy.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
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00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Boris Zbarsky <bzbarsky@mit.edu>.
00019  * Portions created by the Initial Developer are Copyright (C) 2004
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsDataDocumentContentPolicy.h"
00039 #include "nsIDocument.h"
00040 #include "nsIContent.h"
00041 #include "nsIDOMWindow.h"
00042 #include "nsIDOMDocument.h"
00043 
00044 NS_IMPL_ISUPPORTS1(nsDataDocumentContentPolicy, nsIContentPolicy)
00045 
00046 NS_IMETHODIMP
00047 nsDataDocumentContentPolicy::ShouldLoad(PRUint32 aContentType,
00048                                         nsIURI *aContentLocation,
00049                                         nsIURI *aRequestingLocation,
00050                                         nsISupports *aRequestingContext,
00051                                         const nsACString &aMimeGuess,
00052                                         nsISupports *aExtra,
00053                                         PRInt16 *aDecision)
00054 {
00055   *aDecision = nsIContentPolicy::ACCEPT;
00056   // Look for the document.  In most cases, aRequestingContext is a
00057   // content node.
00058   nsCOMPtr<nsIDocument> doc;
00059   nsCOMPtr<nsIContent> content = do_QueryInterface(aRequestingContext);
00060   if (content) {
00061     doc = content->GetOwnerDoc();
00062   } else {
00063     doc = do_QueryInterface(aRequestingContext);
00064     if (!doc) {
00065       nsCOMPtr<nsIDOMWindow> window = do_QueryInterface(aRequestingContext);
00066       if (window) {
00067         nsCOMPtr<nsIDOMDocument> domDoc;
00068         window->GetDocument(getter_AddRefs(domDoc));
00069         doc = do_QueryInterface(domDoc);
00070       }
00071     }
00072   }
00073   if (doc && doc->IsLoadedAsData()) {
00074     *aDecision = nsIContentPolicy::REJECT_TYPE;
00075   }
00076 
00077   return NS_OK;
00078 }
00079 
00080 NS_IMETHODIMP
00081 nsDataDocumentContentPolicy::ShouldProcess(PRUint32 aContentType,
00082                                            nsIURI *aContentLocation,
00083                                            nsIURI *aRequestingLocation,
00084                                            nsISupports *aRequestingContext,
00085                                            const nsACString &aMimeGuess,
00086                                            nsISupports *aExtra,
00087                                            PRInt16 *aDecision)
00088 {
00089   return ShouldLoad(aContentType, aContentLocation, aRequestingLocation,
00090                     aRequestingContext, aMimeGuess, aExtra, aDecision);
00091 }