LCOV - code coverage report
Current view: directory - content/base/src - nsNoDataProtocolContentPolicy.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 18 14 77.8 %
Date: 2012-06-02 Functions: 5 4 80.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is mozilla.org code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Mozilla Foundation.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2006
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *         Jonas Sicking <jonas@sicking.cc> (Original Author)
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      26                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : /*
      39                 :  * Content policy implementation that prevents all loads of images,
      40                 :  * subframes, etc from protocols that don't return data but rather open
      41                 :  * applications (such as mailto).
      42                 :  */
      43                 : 
      44                 : #include "nsNoDataProtocolContentPolicy.h"
      45                 : #include "nsIDocument.h"
      46                 : #include "nsINode.h"
      47                 : #include "nsIDOMWindow.h"
      48                 : #include "nsIDOMDocument.h"
      49                 : #include "nsString.h"
      50                 : #include "nsContentUtils.h"
      51                 : #include "nsIProtocolHandler.h"
      52                 : #include "nsIIOService.h"
      53                 : #include "nsIExternalProtocolHandler.h"
      54                 : #include "nsNetUtil.h"
      55                 : 
      56              36 : NS_IMPL_ISUPPORTS1(nsNoDataProtocolContentPolicy, nsIContentPolicy)
      57                 : 
      58                 : NS_IMETHODIMP
      59              10 : nsNoDataProtocolContentPolicy::ShouldLoad(PRUint32 aContentType,
      60                 :                                           nsIURI *aContentLocation,
      61                 :                                           nsIURI *aRequestingLocation,
      62                 :                                           nsISupports *aRequestingContext,
      63                 :                                           const nsACString &aMimeGuess,
      64                 :                                           nsISupports *aExtra,
      65                 :                                           PRInt16 *aDecision)
      66                 : {
      67              10 :   *aDecision = nsIContentPolicy::ACCEPT;
      68                 : 
      69                 :   // Don't block for TYPE_OBJECT since such URIs are sometimes loaded by the
      70                 :   // plugin, so they don't necessarily open external apps
      71                 :   // TYPE_WEBSOCKET loads can only go to ws:// or wss://, so we don't need to
      72                 :   // concern ourselves with them.
      73              10 :   if (aContentType != TYPE_DOCUMENT &&
      74                 :       aContentType != TYPE_SUBDOCUMENT &&
      75                 :       aContentType != TYPE_OBJECT &&
      76                 :       aContentType != TYPE_WEBSOCKET) {
      77                 : 
      78                 :     // The following are just quick-escapes for the most common cases
      79                 :     // where we would allow the content to be loaded anyway.
      80              20 :     nsCAutoString scheme;
      81              10 :     aContentLocation->GetScheme(scheme);
      82              50 :     if (scheme.EqualsLiteral("http") ||
      83              10 :         scheme.EqualsLiteral("https") ||
      84              10 :         scheme.EqualsLiteral("ftp") ||
      85              10 :         scheme.EqualsLiteral("file") ||
      86              10 :         scheme.EqualsLiteral("chrome")) {
      87               0 :       return NS_OK;
      88                 :     }
      89                 : 
      90                 :     bool shouldBlock;
      91                 :     nsresult rv = NS_URIChainHasFlags(aContentLocation,
      92                 :                                       nsIProtocolHandler::URI_DOES_NOT_RETURN_DATA,
      93              10 :                                       &shouldBlock);
      94              10 :     if (NS_SUCCEEDED(rv) && shouldBlock) {
      95               0 :       *aDecision = nsIContentPolicy::REJECT_REQUEST;
      96                 :     }
      97                 :   }
      98                 : 
      99              10 :   return NS_OK;
     100                 : }
     101                 : 
     102                 : NS_IMETHODIMP
     103               0 : nsNoDataProtocolContentPolicy::ShouldProcess(PRUint32 aContentType,
     104                 :                                              nsIURI *aContentLocation,
     105                 :                                              nsIURI *aRequestingLocation,
     106                 :                                              nsISupports *aRequestingContext,
     107                 :                                              const nsACString &aMimeGuess,
     108                 :                                              nsISupports *aExtra,
     109                 :                                              PRInt16 *aDecision)
     110                 : {
     111                 :   return ShouldLoad(aContentType, aContentLocation, aRequestingLocation,
     112               0 :                     aRequestingContext, aMimeGuess, aExtra, aDecision);
     113                 : }

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