sandbox/src/named_pipe_dispatcher.cc

   1 // Copyright (c) 2006-2010 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 "sandbox/src/named_pipe_dispatcher.h"
   6
   7 #include "base/basictypes.h"
   8
   9 #include "sandbox/src/crosscall_client.h"
  10 #include "sandbox/src/interception.h"
  11 #include "sandbox/src/interceptors.h"
  12 #include "sandbox/src/ipc_tags.h"
  13 #include "sandbox/src/named_pipe_interception.h"
  14 #include "sandbox/src/named_pipe_policy.h"
  15 #include "sandbox/src/policy_broker.h"
  16 #include "sandbox/src/policy_params.h"
  17 #include "sandbox/src/sandbox.h"
  18
  19
  20 namespace sandbox {
  21
  22 NamedPipeDispatcher::NamedPipeDispatcher(PolicyBase* policy_base)
  23     : policy_base_(policy_base) {
  24   static const IPCCall create_params = {
  25     {IPC_CREATENAMEDPIPEW_TAG, WCHAR_TYPE, ULONG_TYPE, ULONG_TYPE, ULONG_TYPE,
  26      ULONG_TYPE, ULONG_TYPE, ULONG_TYPE},
  27     reinterpret_cast<CallbackGeneric>(&NamedPipeDispatcher::CreateNamedPipe)
  28   };
  29
  30   ipc_calls_.push_back(create_params);
  31 }
  32
  33 bool NamedPipeDispatcher::SetupService(InterceptionManager* manager,
  34                                        int service) {
  35   if (IPC_CREATENAMEDPIPEW_TAG == service)
  36     return INTERCEPT_EAT(manager, L"kernel32.dll", CreateNamedPipeW,
  37                          CREATE_NAMED_PIPE_ID, 36);
  38
  39   return false;
  40 }
  41
  42 bool NamedPipeDispatcher::CreateNamedPipe(
  43     IPCInfo* ipc, std::wstring* name, DWORD open_mode, DWORD pipe_mode,
  44     DWORD max_instances, DWORD out_buffer_size, DWORD in_buffer_size,
  45     DWORD default_timeout) {
  46   const wchar_t* pipe_name = name->c_str();
  47   CountedParameterSet<NameBased> params;
  48   params[NameBased::NAME] = ParamPickerMake(pipe_name);
  49
  50   EvalResult eval = policy_base_->EvalPolicy(IPC_CREATENAMEDPIPEW_TAG,
  51                                              params.GetBase());
  52
  53   HANDLE pipe;
  54   DWORD ret = NamedPipePolicy::CreateNamedPipeAction(eval, *ipc->client_info,
  55                                                      *name, open_mode,
  56                                                      pipe_mode, max_instances,
  57                                                      out_buffer_size,
  58                                                      in_buffer_size,
  59                                                      default_timeout, &pipe);
  60
  61   ipc->return_info.win32_result = ret;
  62   ipc->return_info.handle = pipe;
  63   return true;
  64 }
  65
  66 }  // namespace sandbox