gecko/netwerk/protocol/data/nsDataChannel.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// data implementation
#include "nsIOService.h"
#include "nsDataChannel.h"
#include "nsDataHandler.h"
#include "nsNetUtil.h"
#include "nsIPipe.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsReadableUtils.h"
#include "nsEscape.h"
#include "plbase64.h"
#include "plstr.h"
#include "prmem.h"
nsresult
nsDataChannel::OpenContentStream(PRBool async, nsIInputStream **result,
nsIChannel** channel)
{
NS_ENSURE_TRUE(URI(), NS_ERROR_NOT_INITIALIZED);
nsresult rv;
nsCAutoString spec;
rv = URI()->GetAsciiSpec(spec);
if (NS_FAILED(rv)) return rv;
nsCString contentType, contentCharset, dataBuffer;
PRBool lBase64;
rv = nsDataHandler::ParseURI(spec, contentType, contentCharset,
lBase64, dataBuffer);
NS_UnescapeURL(dataBuffer);
if (lBase64) {
// Don't allow spaces in base64-encoded content. This is only
// relevant for escaped spaces; other spaces are stripped in
// NewURI.
dataBuffer.StripWhitespace();
}
nsCOMPtr<nsIInputStream> bufInStream;
nsCOMPtr<nsIOutputStream> bufOutStream;
// create an unbounded pipe.
rv = NS_NewPipe(getter_AddRefs(bufInStream),
getter_AddRefs(bufOutStream),
nsIOService::gDefaultSegmentSize,
PR_UINT32_MAX,
async, PR_TRUE);
if (NS_FAILED(rv))
return rv;
PRUint32 contentLen;
if (lBase64) {
const PRUint32 dataLen = dataBuffer.Length();
PRInt32 resultLen = 0;
if (dataLen >= 1 && dataBuffer[dataLen-1] == '=') {
if (dataLen >= 2 && dataBuffer[dataLen-2] == '=')
resultLen = dataLen-2;
else
resultLen = dataLen-1;
} else {
resultLen = dataLen;
}
resultLen = ((resultLen * 3) / 4);
// XXX PL_Base64Decode will return a null pointer for decoding
// errors. Since those are more likely than out-of-memory,
// should we return NS_ERROR_MALFORMED_URI instead?
char * decodedData = PL_Base64Decode(dataBuffer.get(), dataLen, nsnull);
if (!decodedData) {
return NS_ERROR_OUT_OF_MEMORY;
}
rv = bufOutStream->Write(decodedData, resultLen, &contentLen);
PR_Free(decodedData);
} else {
rv = bufOutStream->Write(dataBuffer.get(), dataBuffer.Length(), &contentLen);
}
if (NS_FAILED(rv))
return rv;
SetContentType(contentType);
SetContentCharset(contentCharset);
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SetContentLength64(contentLen);
NS_ADDREF(*result = bufInStream);
return NS_OK;
}