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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// data implementation
#include "nsDataChannel.h"
#include "mozilla/Base64.h"
#include "nsIOService.h"
#include "nsDataHandler.h"
#include "nsIPipe.h"
#include "nsIInputStream.h"
#include "nsIOutputStream.h"
#include "nsEscape.h"
using namespace mozilla;
nsresult
nsDataChannel::OpenContentStream(bool async, nsIInputStream **result,
nsIChannel** channel)
{
NS_ENSURE_TRUE(URI(), NS_ERROR_NOT_INITIALIZED);
nsresult rv;
nsAutoCString spec;
rv = URI()->GetAsciiSpec(spec);
if (NS_FAILED(rv)) return rv;
nsCString contentType, contentCharset, dataBuffer;
bool lBase64;
rv = nsDataHandler::ParseURI(spec, contentType, &contentCharset,
lBase64, &dataBuffer);
if (NS_FAILED(rv))
return rv;
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,
UINT32_MAX,
async, true);
if (NS_FAILED(rv))
return rv;
uint32_t contentLen;
if (lBase64) {
const uint32_t dataLen = dataBuffer.Length();
int32_t 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);
nsAutoCString decodedData;
rv = Base64Decode(dataBuffer, decodedData);
NS_ENSURE_SUCCESS(rv, rv);
rv = bufOutStream->Write(decodedData.get(), resultLen, &contentLen);
} else {
rv = bufOutStream->Write(dataBuffer.get(), dataBuffer.Length(), &contentLen);
}
if (NS_FAILED(rv))
return rv;
SetContentType(contentType);
SetContentCharset(contentCharset);
mContentLength = contentLen;
bufInStream.forget(result);
return NS_OK;
}
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