ipc/handle_attachment_win.cc

   1 // Copyright 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/handle_attachment_win.h"
   6
   7 #include <windows.h>
   8
   9 namespace IPC {
  10 namespace internal {
  11
  12 HandleAttachmentWin::HandleAttachmentWin(const HANDLE& handle,
  13                                          HandleWin::Permissions permissions)
  14     : handle_(handle), permissions_(permissions) {}
  15
  16 HandleAttachmentWin::HandleAttachmentWin(const WireFormat& wire_format)
  17     : BrokerableAttachment(wire_format.attachment_id, false),
  18       handle_(LongToHandle(wire_format.handle)),
  19       permissions_(wire_format.permissions) {}
  20
  21 HandleAttachmentWin::HandleAttachmentWin(
  22     const BrokerableAttachment::AttachmentId& id)
  23     : BrokerableAttachment(id, true),
  24       handle_(INVALID_HANDLE_VALUE),
  25       permissions_(HandleWin::INVALID) {}
  26
  27 HandleAttachmentWin::~HandleAttachmentWin() {
  28 }
  29
  30 HandleAttachmentWin::BrokerableType HandleAttachmentWin::GetBrokerableType()
  31     const {
  32   return WIN_HANDLE;
  33 }
  34
  35 void HandleAttachmentWin::PopulateWithAttachment(
  36     const BrokerableAttachment* attachment) {
  37   DCHECK(NeedsBrokering());
  38   DCHECK(!attachment->NeedsBrokering());
  39   DCHECK(GetIdentifier() == attachment->GetIdentifier());
  40   DCHECK_EQ(GetBrokerableType(), attachment->GetBrokerableType());
  41
  42   const HandleAttachmentWin* handle_attachment =
  43       static_cast<const HandleAttachmentWin*>(attachment);
  44   handle_ = handle_attachment->handle_;
  45   SetNeedsBrokering(false);
  46 }
  47
  48 HandleAttachmentWin::WireFormat HandleAttachmentWin::GetWireFormat(
  49     const base::ProcessId& destination) const {
  50   WireFormat format;
  51   format.handle = HandleToLong(handle_);
  52   format.attachment_id = GetIdentifier();
  53   format.destination_process = destination;
  54   format.permissions = permissions_;
  55   return format;
  56 }
  57
  58 }  // namespace internal
  59 }  // namespace IPC