Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* vim: set ts=8 sts=2 et sw=2 tw=80: */
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : #include "InputStreamUtils.h"
       8             : 
       9             : #include "nsIIPCSerializableInputStream.h"
      10             : 
      11             : #include "mozilla/Assertions.h"
      12             : #include "mozilla/dom/File.h"
      13             : #include "mozilla/dom/ipc/IPCBlobInputStream.h"
      14             : #include "mozilla/dom/ipc/IPCBlobInputStreamStorage.h"
      15             : #include "nsComponentManagerUtils.h"
      16             : #include "nsDebug.h"
      17             : #include "nsID.h"
      18             : #include "nsIXULRuntime.h"
      19             : #include "nsMIMEInputStream.h"
      20             : #include "nsMultiplexInputStream.h"
      21             : #include "nsNetCID.h"
      22             : #include "nsStringStream.h"
      23             : #include "nsTemporaryFileInputStream.h"
      24             : #include "nsXULAppAPI.h"
      25             : #include "SlicedInputStream.h"
      26             : 
      27             : using namespace mozilla::dom;
      28             : 
      29             : namespace {
      30             : 
      31             : NS_DEFINE_CID(kStringInputStreamCID, NS_STRINGINPUTSTREAM_CID);
      32             : NS_DEFINE_CID(kFileInputStreamCID, NS_LOCALFILEINPUTSTREAM_CID);
      33             : NS_DEFINE_CID(kBufferedInputStreamCID, NS_BUFFEREDINPUTSTREAM_CID);
      34             : NS_DEFINE_CID(kMIMEInputStreamCID, NS_MIMEINPUTSTREAM_CID);
      35             : NS_DEFINE_CID(kMultiplexInputStreamCID, NS_MULTIPLEXINPUTSTREAM_CID);
      36             : 
      37             : } // namespace
      38             : 
      39             : namespace mozilla {
      40             : namespace ipc {
      41             : 
      42             : void
      43           0 : InputStreamHelper::SerializeInputStream(nsIInputStream* aInputStream,
      44             :                                         InputStreamParams& aParams,
      45             :                                         nsTArray<FileDescriptor>& aFileDescriptors)
      46             : {
      47           0 :   MOZ_ASSERT(aInputStream);
      48             : 
      49             :   nsCOMPtr<nsIIPCSerializableInputStream> serializable =
      50           0 :     do_QueryInterface(aInputStream);
      51           0 :   if (!serializable) {
      52           0 :     MOZ_CRASH("Input stream is not serializable!");
      53             :   }
      54             : 
      55           0 :   serializable->Serialize(aParams, aFileDescriptors);
      56             : 
      57           0 :   if (aParams.type() == InputStreamParams::T__None) {
      58           0 :     MOZ_CRASH("Serialize failed!");
      59             :   }
      60           0 : }
      61             : 
      62             : already_AddRefed<nsIInputStream>
      63           0 : InputStreamHelper::DeserializeInputStream(const InputStreamParams& aParams,
      64             :                                           const nsTArray<FileDescriptor>& aFileDescriptors)
      65             : {
      66           0 :   nsCOMPtr<nsIInputStream> stream;
      67           0 :   nsCOMPtr<nsIIPCSerializableInputStream> serializable;
      68             : 
      69             :   // IPCBlobInputStreams are not deserializable on the parent side.
      70           0 :   if (aParams.type() == InputStreamParams::TIPCBlobInputStreamParams) {
      71           0 :     MOZ_ASSERT(XRE_IsParentProcess());
      72           0 :     IPCBlobInputStreamStorage::Get()->GetStream(aParams.get_IPCBlobInputStreamParams().id(),
      73           0 :                                                 getter_AddRefs(stream));
      74           0 :     return stream.forget();
      75             :   }
      76             : 
      77           0 :   switch (aParams.type()) {
      78             :     case InputStreamParams::TStringInputStreamParams:
      79           0 :       serializable = do_CreateInstance(kStringInputStreamCID);
      80           0 :       break;
      81             : 
      82             :     case InputStreamParams::TFileInputStreamParams:
      83           0 :       serializable = do_CreateInstance(kFileInputStreamCID);
      84           0 :       break;
      85             : 
      86             :     case InputStreamParams::TTemporaryFileInputStreamParams:
      87           0 :       serializable = new nsTemporaryFileInputStream();
      88           0 :       break;
      89             : 
      90             :     case InputStreamParams::TBufferedInputStreamParams:
      91           0 :       serializable = do_CreateInstance(kBufferedInputStreamCID);
      92           0 :       break;
      93             : 
      94             :     case InputStreamParams::TMIMEInputStreamParams:
      95           0 :       serializable = do_CreateInstance(kMIMEInputStreamCID);
      96           0 :       break;
      97             : 
      98             :     case InputStreamParams::TMultiplexInputStreamParams:
      99           0 :       serializable = do_CreateInstance(kMultiplexInputStreamCID);
     100           0 :       break;
     101             : 
     102             :     case InputStreamParams::TSlicedInputStreamParams:
     103           0 :       serializable = new SlicedInputStream();
     104           0 :       break;
     105             : 
     106             :     default:
     107           0 :       MOZ_ASSERT(false, "Unknown params!");
     108             :       return nullptr;
     109             :   }
     110             : 
     111           0 :   MOZ_ASSERT(serializable);
     112             : 
     113           0 :   if (!serializable->Deserialize(aParams, aFileDescriptors)) {
     114           0 :     MOZ_ASSERT(false, "Deserialize failed!");
     115             :     return nullptr;
     116             :   }
     117             : 
     118           0 :   stream = do_QueryInterface(serializable);
     119           0 :   MOZ_ASSERT(stream);
     120             : 
     121           0 :   return stream.forget();
     122             : }
     123             : 
     124             : } // namespace ipc
     125             : } // namespace mozilla