зеркало из https://github.com/mozilla/gecko-dev.git
126 строки
3.8 KiB
C++
126 строки
3.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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/. */
|
|
|
|
#include "InputStreamUtils.h"
|
|
|
|
#include "nsIIPCSerializableInputStream.h"
|
|
|
|
#include "mozilla/Assertions.h"
|
|
#include "mozilla/dom/File.h"
|
|
#include "mozilla/dom/ipc/IPCBlobInputStream.h"
|
|
#include "mozilla/dom/ipc/IPCBlobInputStreamStorage.h"
|
|
#include "mozilla/SlicedInputStream.h"
|
|
#include "mozilla/InputStreamLengthWrapper.h"
|
|
#include "nsComponentManagerUtils.h"
|
|
#include "nsDebug.h"
|
|
#include "nsID.h"
|
|
#include "nsIXULRuntime.h"
|
|
#include "nsMIMEInputStream.h"
|
|
#include "nsMultiplexInputStream.h"
|
|
#include "nsNetCID.h"
|
|
#include "nsStringStream.h"
|
|
#include "nsXULAppAPI.h"
|
|
|
|
using namespace mozilla::dom;
|
|
|
|
namespace {
|
|
|
|
NS_DEFINE_CID(kStringInputStreamCID, NS_STRINGINPUTSTREAM_CID);
|
|
NS_DEFINE_CID(kFileInputStreamCID, NS_LOCALFILEINPUTSTREAM_CID);
|
|
NS_DEFINE_CID(kBufferedInputStreamCID, NS_BUFFEREDINPUTSTREAM_CID);
|
|
NS_DEFINE_CID(kMIMEInputStreamCID, NS_MIMEINPUTSTREAM_CID);
|
|
NS_DEFINE_CID(kMultiplexInputStreamCID, NS_MULTIPLEXINPUTSTREAM_CID);
|
|
|
|
} // namespace
|
|
|
|
namespace mozilla {
|
|
namespace ipc {
|
|
|
|
void InputStreamHelper::SerializeInputStream(
|
|
nsIInputStream* aInputStream, InputStreamParams& aParams,
|
|
nsTArray<FileDescriptor>& aFileDescriptors) {
|
|
MOZ_ASSERT(aInputStream);
|
|
|
|
nsCOMPtr<nsIIPCSerializableInputStream> serializable =
|
|
do_QueryInterface(aInputStream);
|
|
if (!serializable) {
|
|
MOZ_CRASH("Input stream is not serializable!");
|
|
}
|
|
|
|
serializable->Serialize(aParams, aFileDescriptors);
|
|
|
|
if (aParams.type() == InputStreamParams::T__None) {
|
|
MOZ_CRASH("Serialize failed!");
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsIInputStream> InputStreamHelper::DeserializeInputStream(
|
|
const InputStreamParams& aParams,
|
|
const nsTArray<FileDescriptor>& aFileDescriptors) {
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
nsCOMPtr<nsIIPCSerializableInputStream> serializable;
|
|
|
|
// IPCBlobInputStreams are not deserializable on the parent side.
|
|
if (aParams.type() == InputStreamParams::TIPCBlobInputStreamParams) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
IPCBlobInputStreamStorage::Get()->GetStream(
|
|
aParams.get_IPCBlobInputStreamParams().id(),
|
|
aParams.get_IPCBlobInputStreamParams().start(),
|
|
aParams.get_IPCBlobInputStreamParams().length(),
|
|
getter_AddRefs(stream));
|
|
return stream.forget();
|
|
}
|
|
|
|
switch (aParams.type()) {
|
|
case InputStreamParams::TStringInputStreamParams:
|
|
serializable = do_CreateInstance(kStringInputStreamCID);
|
|
break;
|
|
|
|
case InputStreamParams::TFileInputStreamParams:
|
|
serializable = do_CreateInstance(kFileInputStreamCID);
|
|
break;
|
|
|
|
case InputStreamParams::TBufferedInputStreamParams:
|
|
serializable = do_CreateInstance(kBufferedInputStreamCID);
|
|
break;
|
|
|
|
case InputStreamParams::TMIMEInputStreamParams:
|
|
serializable = do_CreateInstance(kMIMEInputStreamCID);
|
|
break;
|
|
|
|
case InputStreamParams::TMultiplexInputStreamParams:
|
|
serializable = do_CreateInstance(kMultiplexInputStreamCID);
|
|
break;
|
|
|
|
case InputStreamParams::TSlicedInputStreamParams:
|
|
serializable = new mozilla::SlicedInputStream();
|
|
break;
|
|
|
|
case InputStreamParams::TInputStreamLengthWrapperParams:
|
|
serializable = new mozilla::InputStreamLengthWrapper();
|
|
break;
|
|
|
|
default:
|
|
MOZ_ASSERT(false, "Unknown params!");
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(serializable);
|
|
|
|
if (!serializable->Deserialize(aParams, aFileDescriptors)) {
|
|
MOZ_ASSERT(false, "Deserialize failed!");
|
|
return nullptr;
|
|
}
|
|
|
|
stream = do_QueryInterface(serializable);
|
|
MOZ_ASSERT(stream);
|
|
|
|
return stream.forget();
|
|
}
|
|
|
|
} // namespace ipc
|
|
} // namespace mozilla
|