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// Copyright (c) 2006-2008 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/named_pipe_interception.h"
#include "sandbox/win/src/crosscall_client.h"
#include "sandbox/win/src/ipc_tags.h"
#include "sandbox/win/src/policy_params.h"
#include "sandbox/win/src/policy_target.h"
#include "sandbox/win/src/sandbox_factory.h"
#include "sandbox/win/src/sandbox_nt_util.h"
#include "sandbox/win/src/sharedmem_ipc_client.h"
#include "sandbox/win/src/target_services.h"
#include "mozilla/sandboxing/sandboxLogging.h"
namespace sandbox {
HANDLE WINAPI
TargetCreateNamedPipeW(CreateNamedPipeWFunction orig_CreateNamedPipeW,
LPCWSTR pipe_name,
DWORD open_mode,
DWORD pipe_mode,
DWORD max_instance,
DWORD out_buffer_size,
DWORD in_buffer_size,
DWORD default_timeout,
LPSECURITY_ATTRIBUTES security_attributes) {
HANDLE pipe = orig_CreateNamedPipeW(
pipe_name, open_mode, pipe_mode, max_instance, out_buffer_size,
in_buffer_size, default_timeout, security_attributes);
if (INVALID_HANDLE_VALUE != pipe)
return pipe;
mozilla::sandboxing::LogBlocked("CreateNamedPipeW", pipe_name);
// We don't trust that the IPC can work this early.
if (!SandboxFactory::GetTargetServices()->GetState()->InitCalled())
return INVALID_HANDLE_VALUE;
DWORD original_error = ::GetLastError();
// We don't support specific Security Attributes.
if (security_attributes)
return INVALID_HANDLE_VALUE;
do {
void* memory = GetGlobalIPCMemory();
if (!memory)
break;
CountedParameterSet<NameBased> params;
params[NameBased::NAME] = ParamPickerMake(pipe_name);
if (!QueryBroker(IpcTag::CREATENAMEDPIPEW, params.GetBase()))
break;
SharedMemIPCClient ipc(memory);
CrossCallReturn answer = {0};
ResultCode code =
CrossCall(ipc, IpcTag::CREATENAMEDPIPEW, pipe_name, open_mode,
pipe_mode, max_instance, out_buffer_size, in_buffer_size,
default_timeout, &answer);
if (SBOX_ALL_OK != code)
break;
::SetLastError(answer.win32_result);
if (ERROR_SUCCESS != answer.win32_result)
return INVALID_HANDLE_VALUE;
mozilla::sandboxing::LogAllowed("CreateNamedPipeW", pipe_name);
return answer.handle;
} while (false);
::SetLastError(original_error);
return INVALID_HANDLE_VALUE;
}
} // namespace sandbox
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