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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "sandbox/src/sync_dispatcher.h"
#include "base/logging.h"
#include "sandbox/src/crosscall_client.h"
#include "sandbox/src/interception.h"
#include "sandbox/src/ipc_tags.h"
#include "sandbox/src/policy_broker.h"
#include "sandbox/src/policy_params.h"
#include "sandbox/src/sandbox.h"
#include "sandbox/src/sync_interception.h"
#include "sandbox/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, ULONG_TYPE, ULONG_TYPE},
reinterpret_cast<CallbackGeneric>(&SyncDispatcher::CreateEvent)
};
static const IPCCall open_params = {
{IPC_OPENEVENT_TAG, WCHAR_TYPE, ULONG_TYPE, ULONG_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 (IPC_CREATEEVENT_TAG == service)
return INTERCEPT_EAT(manager, L"kernel32.dll", CreateEventW,
L"_TargetCreateEventW@20");
if (IPC_OPENEVENT_TAG == service)
return INTERCEPT_EAT(manager, L"kernel32.dll", OpenEventW,
L"_TargetOpenEventW@16");
return false;
}
bool SyncDispatcher::CreateEvent(IPCInfo* ipc, std::wstring* name,
DWORD manual_reset, DWORD 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;
DWORD ret = SyncPolicy::CreateEventAction(result, *ipc->client_info, *name,
manual_reset, initial_state,
&handle);
// Return operation status on the IPC.
ipc->return_info.win32_result = ret;
ipc->return_info.handle = handle;
return true;
}
bool SyncDispatcher::OpenEvent(IPCInfo* ipc, std::wstring* name,
DWORD desired_access, DWORD inherit_handle) {
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;
DWORD ret = SyncPolicy::OpenEventAction(result, *ipc->client_info, *name,
desired_access, inherit_handle,
&handle);
// Return operation status on the IPC.
ipc->return_info.win32_result = ret;
ipc->return_info.handle = handle;
return true;
}
} // namespace sandbox
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