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////////////////////////////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012 Microsoft Corporation. All Rights Reserved.
//
// Module Name:
// HelperFunctions_FwpmEngine.cpp
//
// Abstract:
// This module contains functions which assist in actions pertaining to BFE engine objects.
//
// Naming Convention:
//
// <Scope><Module><Object><Action><Modifier>
//
// i.e.
//
// <Scope>
// {
// - Function is likely visible to other modules.
// }
// <Module>
// {
// Hlpr - Function is from HelperFunctions_* Modules.
// }
// <Object>
// {
// FwpmEngine - Function pertains to BFE engine objects.
// }
// <Action>
// {
// Close - Function destroys a handle.
// Open - Function creates a handle.
// }
// <Modifier>
// {
// }
//
// Private Functions:
//
// Public Functions:
// HlprFwpmEngineClose(),
// HlprFwpmEngineOpen()
//
// Author:
// Dusty Harper (DHarper)
//
// Revision History:
//
// [ Month ][Day] [Year] - [Revision]-[ Comments ]
// May 01, 2010 - 1.0 - Creation
//
////////////////////////////////////////////////////////////////////////////////////////////////////
#include "HelperFunctions_Include.h" /// .
/**
@helper_function="HlprFwpmEngineOpen"
Purpose: Wrapper for the FwpmEngineClose API. <br>
<br>
Notes: <br>
<br>
MSDN_Ref: HTTP://MSDN.Microsoft.com/En-US/Library/AA364034.aspx <br>
*/
_When_(return == NO_ERROR, _At_(*pEngineHandle, _Post_ _Null_))
_Success_(return == NO_ERROR)
UINT32 HlprFwpmEngineClose(_Inout_ HANDLE* pEngineHandle)
{
ASSERT(pEngineHandle);
UINT32 status = NO_ERROR;
if(*pEngineHandle)
{
status = FwpmEngineClose(*pEngineHandle);
if(status != NO_ERROR)
{
HlprLogError(L"HlprFwpmEngineClose : FwpmEngineClose() [status: %#x]",
status);
HLPR_BAIL;
}
*pEngineHandle = 0;
}
HLPR_BAIL_LABEL:
return status;
}
/**
@helper_function="HlprFwpmEngineOpen"
Purpose: Wrapper for the FwpmEngineOpen API. <br>
<br>
Notes: <br>
<br>
MSDN_Ref: HTTP://MSDN.Microsoft.com/En-US/Library/AA364040.aspx <br>
*/
_At_(*pEngineHandle, _Pre_ _Null_)
_When_(return != NO_ERROR, _At_(*pEngineHandle, _Post_ _Null_))
_When_(return == NO_ERROR, _At_(*pEngineHandle, _Post_ _Notnull_))
_Success_(return == NO_ERROR)
UINT32 HlprFwpmEngineOpen(_Out_ HANDLE* pEngineHandle,
_In_ const UINT32 sessionFlags) /* FWPM_SESSION_FLAG_NONDYNAMIC */
{
ASSERT(pEngineHandle);
UINT32 status = NO_ERROR;
FWPM_SESSION session = {0};
session.displayData.name = L"WFPSampler's User Mode Session";
session.flags = sessionFlags;
status = FwpmEngineOpen(0,
RPC_C_AUTHN_WINNT,
0,
&session,
pEngineHandle);
if(status != NO_ERROR)
HlprLogError(L"HlprFwpmEngineOpen : FwpmEngineOpen() [status: %#x]",
status);
return status;
}
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