embedding/browser/webBrowser/nsWebBrowserContentPolicy.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
   2  * vim: ft=cpp tw=78 sw=4 et ts=8
   3  *
   4  * ***** BEGIN LICENSE BLOCK *****
   5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   6  *
   7  * The contents of this file are subject to the Mozilla Public License Version
   8  * 1.1 (the "License"); you may not use this file except in compliance with
   9  * the License. You may obtain a copy of the License at
  10  * http://www.mozilla.org/MPL/
  11  *
  12  * Software distributed under the License is distributed on an "AS IS" basis,
  13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  14  * for the specific language governing rights and limitations under the
  15  * License.
  16  *
  17  * The Original Code is embedding content-control code.
  18  *
  19  * The Initial Developer of the Original Code is
  20  * Mike Shaver.
  21  * Portions created by the Initial Developer are Copyright (C) 2001
  22  * the Initial Developer. All Rights Reserved.
  23  *
  24  * Contributor(s):
  25  *
  26  * Alternatively, the contents of this file may be used under the terms of
  27  * either the GNU General Public License Version 2 or later (the "GPL"), or
  28  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  29  * in which case the provisions of the GPL or the LGPL are applicable instead
  30  * of those above. If you wish to allow use of your version of this file only
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  35  * the provisions above, a recipient may use your version of this file under
  36  * the terms of any one of the MPL, the GPL or the LGPL.
  37  *
  38  * ***** END LICENSE BLOCK ***** */
  39
  40 #include "nsWebBrowserContentPolicy.h"
  41 #include "nsIDocShell.h"
  42 #include "nsCOMPtr.h"
  43 #include "nsContentPolicyUtils.h"
  44
  45 nsWebBrowserContentPolicy::nsWebBrowserContentPolicy()
  46 {
  47     MOZ_COUNT_CTOR(nsWebBrowserContentPolicy);
  48 }
  49
  50 nsWebBrowserContentPolicy::~nsWebBrowserContentPolicy()
  51 {
  52     MOZ_COUNT_DTOR(nsWebBrowserContentPolicy);
  53 }
  54
  55 NS_IMPL_ISUPPORTS1(nsWebBrowserContentPolicy, nsIContentPolicy)
  56
  57 static nsresult
  58 PerformPolicyCheck(PRUint32     contentType,
  59                    nsISupports *requestingContext,
  60                    PRInt16     *decision)
  61 {
  62     NS_PRECONDITION(decision, "Null out param");
  63
  64     *decision = nsIContentPolicy::ACCEPT;
  65
  66     nsIDocShell *shell = NS_CP_GetDocShellFromContext(requestingContext);
  67     /* We're going to dereference shell, so make sure it isn't null */
  68     if (!shell)
  69         return NS_OK;
  70
  71     nsresult rv;
  72     PRBool allowed = PR_TRUE;
  73
  74     switch (contentType) {
  75       case nsIContentPolicy::TYPE_OBJECT:
  76         rv = shell->GetAllowPlugins(&allowed);
  77         break;
  78       case nsIContentPolicy::TYPE_SCRIPT:
  79         rv = shell->GetAllowJavascript(&allowed);
  80         break;
  81       case nsIContentPolicy::TYPE_SUBDOCUMENT:
  82         rv = shell->GetAllowSubframes(&allowed);
  83         break;
  84 #if 0
  85       /* XXXtw: commented out in old code; add during conpol phase 2 */
  86       case nsIContentPolicy::TYPE_REFRESH:
  87         rv = shell->GetAllowMetaRedirects(&allowed); /* meta _refresh_ */
  88         break;
  89 #endif
  90       case nsIContentPolicy::TYPE_IMAGE:
  91         rv = shell->GetAllowImages(&allowed);
  92         break;
  93       default:
  94         return NS_OK;
  95     }
  96
  97     if (NS_SUCCEEDED(rv) && !allowed) {
  98         *decision = nsIContentPolicy::REJECT_TYPE;
  99     }
 100     return rv;
 101 }
 102
 103 NS_IMETHODIMP
 104 nsWebBrowserContentPolicy::ShouldLoad(PRUint32          contentType,
 105                                       nsIURI           *contentLocation,
 106                                       nsIURI           *requestingLocation,
 107                                       nsISupports      *requestingContext,
 108                                       const nsACString &mimeGuess,
 109                                       nsISupports      *extra,
 110                                       PRInt16          *shouldLoad)
 111 {
 112     return PerformPolicyCheck(contentType, requestingContext, shouldLoad);
 113 }
 114
 115 NS_IMETHODIMP
 116 nsWebBrowserContentPolicy::ShouldProcess(PRUint32          contentType,
 117                                          nsIURI           *contentLocation,
 118                                          nsIURI           *requestingLocation,
 119                                          nsISupports      *requestingContext,
 120                                          const nsACString &mimeGuess,
 121                                          nsISupports      *extra,
 122                                          PRInt16          *shouldProcess)
 123 {
 124     *shouldProcess = nsIContentPolicy::ACCEPT;
 125     return NS_OK;
 126     //LATER:
 127     //  return PerformPolicyCheck(contentType, requestingContext, shouldProcess);
 128 }