michael@0: // Copyright (c) 2006-2010 The Chromium Authors. All rights reserved.
michael@0: // Use of this source code is governed by a BSD-style license that can be
michael@0: // found in the LICENSE file.
michael@0: 
michael@0: #include "sandbox/win/src/sync_dispatcher.h"
michael@0: 
michael@0: #include "sandbox/win/src/crosscall_client.h"
michael@0: #include "sandbox/win/src/interception.h"
michael@0: #include "sandbox/win/src/interceptors.h"
michael@0: #include "sandbox/win/src/ipc_tags.h"
michael@0: #include "sandbox/win/src/policy_broker.h"
michael@0: #include "sandbox/win/src/policy_params.h"
michael@0: #include "sandbox/win/src/sandbox.h"
michael@0: #include "sandbox/win/src/sync_interception.h"
michael@0: #include "sandbox/win/src/sync_policy.h"
michael@0: 
michael@0: namespace sandbox {
michael@0: 
michael@0: SyncDispatcher::SyncDispatcher(PolicyBase* policy_base)
michael@0:     : policy_base_(policy_base) {
michael@0:   static const IPCCall create_params = {
michael@0:     {IPC_CREATEEVENT_TAG, WCHAR_TYPE, ULONG_TYPE, ULONG_TYPE},
michael@0:     reinterpret_cast<CallbackGeneric>(&SyncDispatcher::CreateEvent)
michael@0:   };
michael@0: 
michael@0:   static const IPCCall open_params = {
michael@0:     {IPC_OPENEVENT_TAG, WCHAR_TYPE, ULONG_TYPE, ULONG_TYPE},
michael@0:     reinterpret_cast<CallbackGeneric>(&SyncDispatcher::OpenEvent)
michael@0:   };
michael@0: 
michael@0:   ipc_calls_.push_back(create_params);
michael@0:   ipc_calls_.push_back(open_params);
michael@0: }
michael@0: 
michael@0: bool SyncDispatcher::SetupService(InterceptionManager* manager,
michael@0:                                   int service) {
michael@0:   if (IPC_CREATEEVENT_TAG == service)
michael@0:       return INTERCEPT_EAT(manager, L"kernel32.dll", CreateEventW,
michael@0:                            CREATE_EVENT_ID, 20);
michael@0: 
michael@0:   if (IPC_OPENEVENT_TAG == service)
michael@0:     return INTERCEPT_EAT(manager, L"kernel32.dll", OpenEventW,
michael@0:                          OPEN_EVENT_ID, 16);
michael@0: 
michael@0:   return false;
michael@0: }
michael@0: 
michael@0: bool SyncDispatcher::CreateEvent(IPCInfo* ipc, std::wstring* name,
michael@0:                                  DWORD manual_reset, DWORD initial_state) {
michael@0:   const wchar_t* event_name = name->c_str();
michael@0:   CountedParameterSet<NameBased> params;
michael@0:   params[NameBased::NAME] = ParamPickerMake(event_name);
michael@0: 
michael@0:   EvalResult result = policy_base_->EvalPolicy(IPC_CREATEEVENT_TAG,
michael@0:                                                params.GetBase());
michael@0:   HANDLE handle = NULL;
michael@0:   DWORD ret = SyncPolicy::CreateEventAction(result, *ipc->client_info, *name,
michael@0:                                             manual_reset, initial_state,
michael@0:                                             &handle);
michael@0:   // Return operation status on the IPC.
michael@0:   ipc->return_info.win32_result = ret;
michael@0:   ipc->return_info.handle = handle;
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: bool SyncDispatcher::OpenEvent(IPCInfo* ipc, std::wstring* name,
michael@0:                                DWORD desired_access, DWORD inherit_handle) {
michael@0:   const wchar_t* event_name = name->c_str();
michael@0: 
michael@0:   CountedParameterSet<OpenEventParams> params;
michael@0:   params[OpenEventParams::NAME] = ParamPickerMake(event_name);
michael@0:   params[OpenEventParams::ACCESS] = ParamPickerMake(desired_access);
michael@0: 
michael@0:   EvalResult result = policy_base_->EvalPolicy(IPC_OPENEVENT_TAG,
michael@0:                                                params.GetBase());
michael@0:   HANDLE handle = NULL;
michael@0:   DWORD ret = SyncPolicy::OpenEventAction(result, *ipc->client_info, *name,
michael@0:                                           desired_access, inherit_handle,
michael@0:                                           &handle);
michael@0:   // Return operation status on the IPC.
michael@0:   ipc->return_info.win32_result = ret;
michael@0:   ipc->return_info.handle = handle;
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: }  // namespace sandbox