ipc/attachment_broker_unprivileged_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/attachment_broker_unprivileged_win.h"
   6
   7 #include "base/process/process.h"
   8 #include "ipc/attachment_broker_messages.h"
   9 #include "ipc/brokerable_attachment.h"
  10 #include "ipc/handle_attachment_win.h"
  11 #include "ipc/ipc_sender.h"
  12
  13 namespace IPC {
  14
  15 AttachmentBrokerUnprivilegedWin::AttachmentBrokerUnprivilegedWin() {}
  16
  17 AttachmentBrokerUnprivilegedWin::~AttachmentBrokerUnprivilegedWin() {}
  18
  19 bool AttachmentBrokerUnprivilegedWin::SendAttachmentToProcess(
  20     const BrokerableAttachment* attachment,
  21     base::ProcessId destination_process) {
  22   switch (attachment->GetBrokerableType()) {
  23     case BrokerableAttachment::WIN_HANDLE: {
  24       const internal::HandleAttachmentWin* handle_attachment =
  25           static_cast<const internal::HandleAttachmentWin*>(attachment);
  26       internal::HandleAttachmentWin::WireFormat format =
  27           handle_attachment->GetWireFormat(destination_process);
  28       return get_sender()->Send(
  29           new AttachmentBrokerMsg_DuplicateWinHandle(format));
  30     }
  31     case BrokerableAttachment::PLACEHOLDER:
  32       NOTREACHED();
  33       return false;
  34   }
  35   return false;
  36 }
  37
  38 bool AttachmentBrokerUnprivilegedWin::OnMessageReceived(const Message& msg) {
  39   bool handled = true;
  40   IPC_BEGIN_MESSAGE_MAP(AttachmentBrokerUnprivilegedWin, msg)
  41     IPC_MESSAGE_HANDLER(AttachmentBrokerMsg_WinHandleHasBeenDuplicated,
  42                         OnWinHandleHasBeenDuplicated)
  43     IPC_MESSAGE_UNHANDLED(handled = false)
  44   IPC_END_MESSAGE_MAP()
  45   return handled;
  46 }
  47
  48 void AttachmentBrokerUnprivilegedWin::OnWinHandleHasBeenDuplicated(
  49     const IPC::internal::HandleAttachmentWin::WireFormat& wire_format) {
  50   // The IPC message was intended for a different process. Ignore it.
  51   if (wire_format.destination_process != base::Process::Current().Pid())
  52     return;
  53
  54   scoped_refptr<BrokerableAttachment> attachment(
  55       new IPC::internal::HandleAttachmentWin(wire_format));
  56   HandleReceivedAttachment(attachment);
  57 }
  58
  59 }  // namespace IPC