// Copyright (c) 2013 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "sandbox/win/src/sync_dispatcher.h" #include "base/win/windows_version.h" #include "sandbox/win/src/crosscall_client.h" #include "sandbox/win/src/interception.h" #include "sandbox/win/src/interceptors.h" #include "sandbox/win/src/ipc_tags.h" #include "sandbox/win/src/policy_broker.h" #include "sandbox/win/src/policy_params.h" #include "sandbox/win/src/sandbox.h" #include "sandbox/win/src/sync_interception.h" #include "sandbox/win/src/sync_policy.h" namespace sandbox { SyncDispatcher::SyncDispatcher(PolicyBase* policy_base) : policy_base_(policy_base) { static const IPCCall create_params = { {IPC_CREATEEVENT_TAG, WCHAR_TYPE, UINT32_TYPE, UINT32_TYPE}, reinterpret_cast<CallbackGeneric>(&SyncDispatcher::CreateEvent) }; static const IPCCall open_params = { {IPC_OPENEVENT_TAG, WCHAR_TYPE, UINT32_TYPE}, reinterpret_cast<CallbackGeneric>(&SyncDispatcher::OpenEvent) }; ipc_calls_.push_back(create_params); ipc_calls_.push_back(open_params); } bool SyncDispatcher::SetupService(InterceptionManager* manager, int service) { if (service == IPC_CREATEEVENT_TAG) { return INTERCEPT_NT(manager, NtCreateEvent, CREATE_EVENT_ID, 24); } return (service == IPC_OPENEVENT_TAG) && INTERCEPT_NT(manager, NtOpenEvent, OPEN_EVENT_ID, 16); } bool SyncDispatcher::CreateEvent(IPCInfo* ipc, base::string16* name, uint32 event_type, uint32 initial_state) { const wchar_t* event_name = name->c_str(); CountedParameterSet<NameBased> params; params[NameBased::NAME] = ParamPickerMake(event_name); EvalResult result = policy_base_->EvalPolicy(IPC_CREATEEVENT_TAG, params.GetBase()); HANDLE handle = NULL; // Return operation status on the IPC. ipc->return_info.nt_status = SyncPolicy::CreateEventAction( result, *ipc->client_info, *name, event_type, initial_state, &handle); ipc->return_info.handle = handle; return true; } bool SyncDispatcher::OpenEvent(IPCInfo* ipc, base::string16* name, uint32 desired_access) { const wchar_t* event_name = name->c_str(); CountedParameterSet<OpenEventParams> params; params[OpenEventParams::NAME] = ParamPickerMake(event_name); params[OpenEventParams::ACCESS] = ParamPickerMake(desired_access); EvalResult result = policy_base_->EvalPolicy(IPC_OPENEVENT_TAG, params.GetBase()); HANDLE handle = NULL; // Return operation status on the IPC. ipc->return_info.nt_status = SyncPolicy::OpenEventAction( result, *ipc->client_info, *name, desired_access, &handle); ipc->return_info.handle = handle; return true; } } // namespace sandbox