michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: // data implementation
michael@0: 
michael@0: #include "nsDataChannel.h"
michael@0: 
michael@0: #include "mozilla/Base64.h"
michael@0: #include "nsIOService.h"
michael@0: #include "nsDataHandler.h"
michael@0: #include "nsIPipe.h"
michael@0: #include "nsIInputStream.h"
michael@0: #include "nsIOutputStream.h"
michael@0: #include "nsEscape.h"
michael@0: 
michael@0: using namespace mozilla;
michael@0: 
michael@0: nsresult
michael@0: nsDataChannel::OpenContentStream(bool async, nsIInputStream **result,
michael@0:                                  nsIChannel** channel)
michael@0: {
michael@0:     NS_ENSURE_TRUE(URI(), NS_ERROR_NOT_INITIALIZED);
michael@0: 
michael@0:     nsresult rv;
michael@0: 
michael@0:     nsAutoCString spec;
michael@0:     rv = URI()->GetAsciiSpec(spec);
michael@0:     if (NS_FAILED(rv)) return rv;
michael@0: 
michael@0:     nsCString contentType, contentCharset, dataBuffer, hashRef;
michael@0:     bool lBase64;
michael@0:     rv = nsDataHandler::ParseURI(spec, contentType, contentCharset,
michael@0:                                  lBase64, dataBuffer, hashRef);
michael@0: 
michael@0:     NS_UnescapeURL(dataBuffer);
michael@0: 
michael@0:     if (lBase64) {
michael@0:         // Don't allow spaces in base64-encoded content. This is only
michael@0:         // relevant for escaped spaces; other spaces are stripped in
michael@0:         // NewURI.
michael@0:         dataBuffer.StripWhitespace();
michael@0:     }
michael@0:     
michael@0:     nsCOMPtr<nsIInputStream> bufInStream;
michael@0:     nsCOMPtr<nsIOutputStream> bufOutStream;
michael@0:     
michael@0:     // create an unbounded pipe.
michael@0:     rv = NS_NewPipe(getter_AddRefs(bufInStream),
michael@0:                     getter_AddRefs(bufOutStream),
michael@0:                     nsIOService::gDefaultSegmentSize,
michael@0:                     UINT32_MAX,
michael@0:                     async, true);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     uint32_t contentLen;
michael@0:     if (lBase64) {
michael@0:         const uint32_t dataLen = dataBuffer.Length();
michael@0:         int32_t resultLen = 0;
michael@0:         if (dataLen >= 1 && dataBuffer[dataLen-1] == '=') {
michael@0:             if (dataLen >= 2 && dataBuffer[dataLen-2] == '=')
michael@0:                 resultLen = dataLen-2;
michael@0:             else
michael@0:                 resultLen = dataLen-1;
michael@0:         } else {
michael@0:             resultLen = dataLen;
michael@0:         }
michael@0:         resultLen = ((resultLen * 3) / 4);
michael@0: 
michael@0:         nsAutoCString decodedData;
michael@0:         rv = Base64Decode(dataBuffer, decodedData);
michael@0:         NS_ENSURE_SUCCESS(rv, rv);
michael@0:         rv = bufOutStream->Write(decodedData.get(), resultLen, &contentLen);
michael@0:     } else {
michael@0:         rv = bufOutStream->Write(dataBuffer.get(), dataBuffer.Length(), &contentLen);
michael@0:     }
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     SetContentType(contentType);
michael@0:     SetContentCharset(contentCharset);
michael@0:     mContentLength = contentLen;
michael@0: 
michael@0:     NS_ADDREF(*result = bufInStream);
michael@0: 
michael@0:     return NS_OK;
michael@0: }