LCOV - code coverage report
Current view: directory - netwerk/protocol/data - nsDataChannel.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 39 36 92.3 %
Date: 2012-06-02 Functions: 1 1 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       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
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * 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                 : // data implementation
      39                 : 
      40                 : #include "nsIOService.h"
      41                 : #include "nsDataChannel.h"
      42                 : #include "nsDataHandler.h"
      43                 : #include "nsNetUtil.h"
      44                 : #include "nsIPipe.h"
      45                 : #include "nsIInputStream.h"
      46                 : #include "nsIOutputStream.h"
      47                 : #include "nsReadableUtils.h"
      48                 : #include "nsEscape.h"
      49                 : #include "plbase64.h"
      50                 : #include "plstr.h"
      51                 : #include "prmem.h"
      52                 : 
      53                 : nsresult
      54             400 : nsDataChannel::OpenContentStream(bool async, nsIInputStream **result,
      55                 :                                  nsIChannel** channel)
      56                 : {
      57             400 :     NS_ENSURE_TRUE(URI(), NS_ERROR_NOT_INITIALIZED);
      58                 : 
      59                 :     nsresult rv;
      60                 : 
      61             800 :     nsCAutoString spec;
      62             400 :     rv = URI()->GetAsciiSpec(spec);
      63             400 :     if (NS_FAILED(rv)) return rv;
      64                 : 
      65             800 :     nsCString contentType, contentCharset, dataBuffer, hashRef;
      66                 :     bool lBase64;
      67                 :     rv = nsDataHandler::ParseURI(spec, contentType, contentCharset,
      68             400 :                                  lBase64, dataBuffer, hashRef);
      69                 : 
      70             400 :     NS_UnescapeURL(dataBuffer);
      71                 : 
      72             400 :     if (lBase64) {
      73                 :         // Don't allow spaces in base64-encoded content. This is only
      74                 :         // relevant for escaped spaces; other spaces are stripped in
      75                 :         // NewURI.
      76             107 :         dataBuffer.StripWhitespace();
      77                 :     }
      78                 :     
      79             800 :     nsCOMPtr<nsIInputStream> bufInStream;
      80             800 :     nsCOMPtr<nsIOutputStream> bufOutStream;
      81                 :     
      82                 :     // create an unbounded pipe.
      83             400 :     rv = NS_NewPipe(getter_AddRefs(bufInStream),
      84             400 :                     getter_AddRefs(bufOutStream),
      85                 :                     nsIOService::gDefaultSegmentSize,
      86                 :                     PR_UINT32_MAX,
      87             400 :                     async, true);
      88             400 :     if (NS_FAILED(rv))
      89               0 :         return rv;
      90                 : 
      91                 :     PRUint32 contentLen;
      92             400 :     if (lBase64) {
      93             107 :         const PRUint32 dataLen = dataBuffer.Length();
      94             107 :         PRInt32 resultLen = 0;
      95             107 :         if (dataLen >= 1 && dataBuffer[dataLen-1] == '=') {
      96             100 :             if (dataLen >= 2 && dataBuffer[dataLen-2] == '=')
      97              89 :                 resultLen = dataLen-2;
      98                 :             else
      99              11 :                 resultLen = dataLen-1;
     100                 :         } else {
     101               7 :             resultLen = dataLen;
     102                 :         }
     103             107 :         resultLen = ((resultLen * 3) / 4);
     104                 : 
     105                 :         // XXX PL_Base64Decode will return a null pointer for decoding
     106                 :         // errors.  Since those are more likely than out-of-memory,
     107                 :         // should we return NS_ERROR_MALFORMED_URI instead?
     108             107 :         char * decodedData = PL_Base64Decode(dataBuffer.get(), dataLen, nsnull);
     109             107 :         if (!decodedData) {
     110               0 :             return NS_ERROR_OUT_OF_MEMORY;
     111                 :         }
     112                 : 
     113             107 :         rv = bufOutStream->Write(decodedData, resultLen, &contentLen);
     114                 : 
     115             107 :         PR_Free(decodedData);
     116                 :     } else {
     117             293 :         rv = bufOutStream->Write(dataBuffer.get(), dataBuffer.Length(), &contentLen);
     118                 :     }
     119             400 :     if (NS_FAILED(rv))
     120               0 :         return rv;
     121                 : 
     122             400 :     SetContentType(contentType);
     123             400 :     SetContentCharset(contentCharset);
     124             400 :     SetContentLength64(contentLen);
     125                 : 
     126             400 :     NS_ADDREF(*result = bufInStream);
     127                 : 
     128             400 :     return NS_OK;
     129                 : }

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