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111 lines
4.5 KiB
C++
Executable File
111 lines
4.5 KiB
C++
Executable File
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Mozilla Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2006
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Jonas Sicking <jonas@sicking.cc> (Original Author)
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Content policy implementation that prevents all loads of images,
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* subframes, etc from protocols that don't return data but rather open
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* applications (such as mailto).
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*/
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#include "nsNoDataProtocolContentPolicy.h"
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#include "nsIDocument.h"
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#include "nsINode.h"
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#include "nsIDOMWindow.h"
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#include "nsIDOMDocument.h"
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#include "nsString.h"
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#include "nsContentUtils.h"
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#include "nsIProtocolHandler.h"
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#include "nsIIOService.h"
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#include "nsIExternalProtocolHandler.h"
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#include "nsNetUtil.h"
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NS_IMPL_ISUPPORTS1(nsNoDataProtocolContentPolicy, nsIContentPolicy)
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NS_IMETHODIMP
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nsNoDataProtocolContentPolicy::ShouldLoad(PRUint32 aContentType,
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nsIURI *aContentLocation,
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nsIURI *aRequestingLocation,
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nsISupports *aRequestingContext,
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const nsACString &aMimeGuess,
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nsISupports *aExtra,
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PRInt16 *aDecision)
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{
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*aDecision = nsIContentPolicy::ACCEPT;
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// Don't block for TYPE_OBJECT since such URIs are sometimes loaded by the
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// plugin, so they don't neccesarily open external apps
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if (aContentType != TYPE_DOCUMENT &&
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aContentType != TYPE_SUBDOCUMENT &&
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aContentType != TYPE_OBJECT) {
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// The following are just quick-escapes for the most common cases
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// where we would allow the content to be loaded anyway.
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nsCAutoString scheme;
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aContentLocation->GetScheme(scheme);
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if (scheme.EqualsLiteral("http") ||
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scheme.EqualsLiteral("https") ||
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scheme.EqualsLiteral("ftp") ||
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scheme.EqualsLiteral("file") ||
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scheme.EqualsLiteral("chrome")) {
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return NS_OK;
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}
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PRBool shouldBlock;
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nsresult rv = NS_URIChainHasFlags(aContentLocation,
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nsIProtocolHandler::URI_DOES_NOT_RETURN_DATA,
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&shouldBlock);
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if (NS_SUCCEEDED(rv) && shouldBlock) {
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*aDecision = nsIContentPolicy::REJECT_REQUEST;
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsNoDataProtocolContentPolicy::ShouldProcess(PRUint32 aContentType,
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nsIURI *aContentLocation,
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nsIURI *aRequestingLocation,
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nsISupports *aRequestingContext,
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const nsACString &aMimeGuess,
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nsISupports *aExtra,
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PRInt16 *aDecision)
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{
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return ShouldLoad(aContentType, aContentLocation, aRequestingLocation,
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aRequestingContext, aMimeGuess, aExtra, aDecision);
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}
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