ipc/mojo/ipc_mojo_message_helper.cc

   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/mojo/ipc_mojo_message_helper.h"
   6
   7 #include "ipc/mojo/ipc_mojo_handle_attachment.h"
   8
   9 namespace IPC {
  10
  11 // static
  12 bool MojoMessageHelper::WriteMessagePipeTo(
  13     Message* message,
  14     mojo::ScopedMessagePipeHandle handle) {
  15   message->WriteAttachment(new internal::MojoHandleAttachment(
  16       mojo::ScopedHandle::From(handle.Pass())));
  17   return true;
  18 }
  19
  20 // static
  21 bool MojoMessageHelper::ReadMessagePipeFrom(
  22     const Message* message,
  23     base::PickleIterator* iter,
  24     mojo::ScopedMessagePipeHandle* handle) {
  25   scoped_refptr<MessageAttachment> attachment;
  26   if (!message->ReadAttachment(iter, &attachment)) {
  27     LOG(ERROR) << "Failed to read attachment for message pipe.";
  28     return false;
  29   }
  30
  31   if (attachment->GetType() != MessageAttachment::TYPE_MOJO_HANDLE) {
  32     LOG(ERROR) << "Unxpected attachment type:" << attachment->GetType();
  33     return false;
  34   }
  35
  36   handle->reset(mojo::MessagePipeHandle(
  37       static_cast<internal::MojoHandleAttachment*>(attachment.get())
  38           ->TakeHandle()
  39           .release()
  40           .value()));
  41   return true;
  42 }
  43
  44 MojoMessageHelper::MojoMessageHelper() {
  45 }
  46
  47 }  // namespace IPC