1// Copyright (c) 2015 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "ipc/ipc_mojo_message_helper.h"
6
7#include <utility>
8
9#include "ipc/ipc_mojo_handle_attachment.h"
10
11namespace IPC {
12
13// static
14bool MojoMessageHelper::WriteMessagePipeTo(
15    base::Pickle* message,
16    mojo::ScopedMessagePipeHandle handle) {
17  message->WriteAttachment(new internal::MojoHandleAttachment(
18      mojo::ScopedHandle::From(std::move(handle))));
19  return true;
20}
21
22// static
23bool MojoMessageHelper::ReadMessagePipeFrom(
24    const base::Pickle* message,
25    base::PickleIterator* iter,
26    mojo::ScopedMessagePipeHandle* handle) {
27  scoped_refptr<base::Pickle::Attachment> attachment;
28  if (!message->ReadAttachment(iter, &attachment)) {
29    LOG(ERROR) << "Failed to read attachment for message pipe.";
30    return false;
31  }
32
33  MessageAttachment::Type type =
34      static_cast<MessageAttachment*>(attachment.get())->GetType();
35  if (type != MessageAttachment::TYPE_MOJO_HANDLE) {
36    LOG(ERROR) << "Unxpected attachment type:" << type;
37    return false;
38  }
39
40  handle->reset(mojo::MessagePipeHandle(
41      static_cast<internal::MojoHandleAttachment*>(attachment.get())
42          ->TakeHandle()
43          .release()
44          .value()));
45  return true;
46}
47
48MojoMessageHelper::MojoMessageHelper() {
49}
50
51}  // namespace IPC
52