LCOV - code coverage report
Current view: directory - content/base/src - mozSanitizingSerializer.h (source / functions) Found Hit Coverage
Test: app.info Lines: 20 0 0.0 %
Date: 2012-06-02 Functions: 16 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* vim: set ts=2 sw=2 et tw=80: */
       3                 : /* ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is mozilla.org HTML Sanitizer code.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is
      19                 :  * Ben Bucksch <mozilla@bucksch.org>.
      20                 :  * Portions created by the Initial Developer are Copyright (C) 2002
      21                 :  * the Initial Developer. All Rights Reserved.
      22                 :  *
      23                 :  * Contributor(s):
      24                 :  *   Netscape
      25                 :  *
      26                 :  * Alternatively, the contents of this file may be used under the terms of
      27                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      28                 :  * or 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
      31                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      32                 :  * use your version of this file under the terms of the MPL, indicate your
      33                 :  * decision by deleting the provisions above and replace them with the notice
      34                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      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                 : /*
      41                 :  * A serializer and content sink that removes potentially insecure or
      42                 :  * otherwise dangerous or offending HTML (eg for display of HTML
      43                 :  * e-mail attachments or something).
      44                 :  */
      45                 : 
      46                 : #ifndef mozSanitizingSerializer_h__
      47                 : #define mozSanitizingSerializer_h__
      48                 : 
      49                 : #include "mozISanitizingSerializer.h"
      50                 : #include "nsIContentSerializer.h"
      51                 : #include "nsIHTMLContentSink.h"
      52                 : #include "nsHTMLTags.h"
      53                 : #include "nsCOMPtr.h"
      54                 : #include "nsIParserService.h"
      55                 : #include "nsIContent.h"
      56                 : #include "nsIAtom.h"
      57                 : #include "nsString.h"
      58                 : #include "nsIParser.h"
      59                 : #include "nsHashtable.h"
      60                 : 
      61                 : class mozSanitizingHTMLSerializer : public nsIContentSerializer,
      62                 :                                     public nsIHTMLContentSink,
      63                 :                                     public mozISanitizingHTMLSerializer
      64                 : {
      65                 : public:
      66                 :   mozSanitizingHTMLSerializer();
      67                 :   virtual ~mozSanitizingHTMLSerializer();
      68                 :   static bool ReleaseProperties(nsHashKey* key, void* data, void* closure);
      69                 : 
      70                 :   NS_DECL_ISUPPORTS
      71                 : 
      72                 :   // nsIContentSerializer
      73                 :   NS_IMETHOD Init(PRUint32 flags, PRUint32 dummy, const char* aCharSet, 
      74                 :                   bool aIsCopying, bool aIsWholeDocument);
      75                 : 
      76                 :   NS_IMETHOD AppendText(nsIContent* aText, PRInt32 aStartOffset,
      77                 :                         PRInt32 aEndOffset, nsAString& aStr);
      78               0 :   NS_IMETHOD AppendCDATASection(nsIContent* aCDATASection,
      79                 :                                 PRInt32 aStartOffset, PRInt32 aEndOffset,
      80                 :                                 nsAString& aStr)
      81               0 :                       { return NS_OK; }
      82               0 :   NS_IMETHOD AppendProcessingInstruction(nsIContent* aPI,
      83                 :                                          PRInt32 aStartOffset,
      84                 :                                          PRInt32 aEndOffset,
      85                 :                                          nsAString& aStr)
      86               0 :                       { return NS_OK; }
      87               0 :   NS_IMETHOD AppendComment(nsIContent* aComment, PRInt32 aStartOffset,
      88                 :                            PRInt32 aEndOffset, nsAString& aStr)
      89               0 :                       { return NS_OK; }
      90               0 :   NS_IMETHOD AppendDoctype(nsIContent *aDoctype, nsAString& aStr)
      91               0 :                       { return NS_OK; }
      92                 :   NS_IMETHOD AppendElementStart(mozilla::dom::Element* aElement,
      93                 :                                 mozilla::dom::Element* aOriginalElement,
      94                 :                                 nsAString& aStr);
      95                 :   NS_IMETHOD AppendElementEnd(mozilla::dom::Element* aElement,
      96                 :                               nsAString& aStr);
      97                 :   NS_IMETHOD Flush(nsAString& aStr);
      98                 : 
      99                 :   NS_IMETHOD AppendDocumentStart(nsIDocument *aDocument,
     100                 :                                  nsAString& aStr);
     101                 : 
     102                 :   // nsIContentSink
     103               0 :   NS_IMETHOD WillParse(void) { return NS_OK; }
     104               0 :   NS_IMETHOD WillInterrupt(void) { return NS_OK; }
     105               0 :   NS_IMETHOD WillResume(void) { return NS_OK; }
     106               0 :   NS_IMETHOD SetParser(nsParserBase* aParser) { return NS_OK; }
     107                 :   NS_IMETHOD OpenContainer(const nsIParserNode& aNode);
     108                 :   NS_IMETHOD CloseContainer(const nsHTMLTag aTag);
     109                 :   NS_IMETHOD AddLeaf(const nsIParserNode& aNode);
     110               0 :   virtual void FlushPendingNotifications(mozFlushType aType) { }
     111                 :   NS_IMETHOD SetDocumentCharset(nsACString& aCharset);
     112               0 :   virtual nsISupports *GetTarget() { return nsnull; }
     113                 : 
     114                 :   // nsIHTMLContentSink
     115                 :   NS_IMETHOD OpenHead();
     116                 :   NS_IMETHOD IsEnabled(PRInt32 aTag, bool* aReturn);
     117               0 :   NS_IMETHOD NotifyTagObservers(nsIParserNode* aNode) { return NS_OK; }
     118               0 :   NS_IMETHOD BeginContext(PRInt32 aPosition) { return NS_OK; }
     119               0 :   NS_IMETHOD EndContext(PRInt32 aPosition) { return NS_OK; }
     120               0 :   NS_IMETHOD DidProcessTokens(void) { return NS_OK; }
     121               0 :   NS_IMETHOD WillProcessAToken(void) { return NS_OK; }
     122               0 :   NS_IMETHOD DidProcessAToken(void) { return NS_OK; }
     123                 : 
     124                 :   // nsISanitizingHTMLSerializer
     125                 :   NS_IMETHOD Initialize(nsAString* aOutString,
     126                 :                         PRUint32 aFlags, const nsAString& allowedTags);
     127                 : 
     128                 : protected:
     129                 :   nsresult ParsePrefs(const nsAString& aPref);
     130                 :   nsresult ParseTagPref(const nsCAutoString& tagpref);
     131                 :   bool IsAllowedTag(nsHTMLTag aTag);
     132                 :   bool IsAllowedAttribute(nsHTMLTag aTag, const nsAString& anAttributeName);
     133                 :   nsresult SanitizeAttrValue(nsHTMLTag aTag, const nsAString& attr_name,
     134                 :                              nsString& value /*inout*/);
     135                 :   nsresult SanitizeTextNode(nsString& value /*inout*/);
     136                 :   bool IsContainer(PRInt32 aId);
     137                 :   static PRInt32 GetIdForContent(nsIContent* aContent);
     138                 :   nsresult GetParserService(nsIParserService** aParserService);
     139                 :   nsresult DoOpenContainer(PRInt32 aTag);
     140                 :   nsresult DoCloseContainer(PRInt32 aTag);
     141                 :   nsresult DoAddLeaf(PRInt32 aTag, const nsAString& aText);
     142                 :   void Write(const nsAString& aString);
     143                 : 
     144                 : protected:
     145                 :   PRInt32                      mFlags;
     146                 :   PRUint32                     mSkipLevel;
     147                 :   nsHashtable                  mAllowedTags;
     148                 : 
     149                 :   nsRefPtr<mozilla::dom::Element> mElement;
     150                 :   nsAString*                   mOutputString;
     151                 :   nsIParserNode*               mParserNode;
     152                 :   nsCOMPtr<nsIParserService>   mParserService;
     153                 : };
     154                 : 
     155                 : nsresult
     156                 : NS_NewSanitizingHTMLSerializer(nsIContentSerializer** aSerializer);
     157                 : 
     158                 : #endif

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