UINT32 PrvScenarioProxyAddFwpmObjects(_In_ const FWPM_FILTER* pFilter,
_In_ const PC_PROXY_DATA* pPCProxyData)
{
ASSERT(pFilter);
ASSERT(pPCProxyData);
UINT32 status = NO_ERROR;
HANDLE engineHandle = 0;
FWP_BYTE_BLOB byteBlob = {0};
FWPM_PROVIDER_CONTEXT providerContext = {0};
FWPM_CALLOUT callout = {0};
FWPM_FILTER filter = {0};
RtlCopyMemory(&filter,
pFilter,
sizeof(FWPM_FILTER));
status = HlprGUIDPopulate(&(providerContext.providerContextKey));
HLPR_BAIL_ON_FAILURE(status);
providerContext.displayData.name = L"WFPSampler's Proxy ProviderContext";
providerContext.displayData.description = L"Instructs the driver where to proxy the socket or connection";
providerContext.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
providerContext.type = FWPM_GENERAL_CONTEXT;
providerContext.dataBuffer = &byteBlob;
providerContext.dataBuffer->size = sizeof(PC_PROXY_DATA);
providerContext.dataBuffer->data = (UINT8*)pPCProxyData;
#if(NTDDI_VERSION >= NTDDI_WIN7)
if(pFilter->layerKey == FWPM_LAYER_ALE_CONNECT_REDIRECT_V4 ||
pFilter->layerKey == FWPM_LAYER_ALE_CONNECT_REDIRECT_V6 ||
pFilter->layerKey == FWPM_LAYER_ALE_BIND_REDIRECT_V4 ||
pFilter->layerKey == FWPM_LAYER_ALE_BIND_REDIRECT_V6)
callout.calloutKey = WFPSAMPLER_CALLOUT_PROXY_BY_ALE_REDIRECT;
else
#endif /// (NTDDI_VERSION >= NTDDI_WIN7)
callout.calloutKey = WFPSAMPLER_CALLOUT_PROXY_BY_INJECTION;
callout.calloutKey.Data4[7] = HlprFwpmLayerGetIDByKey(&(filter.layerKey)); /// Uniquely identifies the callout used
callout.displayData.name = L"WFPSampler's Proxy Callout";
callout.displayData.description = L"Proxies the socket or connection to the designated destination";
callout.flags = FWPM_CALLOUT_FLAG_USES_PROVIDER_CONTEXT;
callout.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
callout.applicableLayer = filter.layerKey;
status = HlprGUIDPopulate(&(filter.filterKey));
HLPR_BAIL_ON_FAILURE(status);
filter.flags |= FWPM_FILTER_FLAG_HAS_PROVIDER_CONTEXT;
filter.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filter.subLayerKey = WFPSAMPLER_SUBLAYER;
filter.weight.type = FWP_UINT8;
filter.weight.uint8 = 0xF;
filter.action.type = FWP_ACTION_CALLOUT_UNKNOWN;
filter.action.calloutKey = callout.calloutKey;
filter.providerContextKey = providerContext.providerContextKey;
if(filter.flags & FWPM_FILTER_FLAG_BOOTTIME ||
filter.flags & FWPM_FILTER_FLAG_PERSISTENT)
{
providerContext.flags |= FWPM_PROVIDER_CONTEXT_FLAG_PERSISTENT;
callout.flags |= FWPM_CALLOUT_FLAG_PERSISTENT;
}
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionBegin(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmProviderContextAdd(engineHandle,
&providerContext);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmCalloutAdd(engineHandle,
&callout);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterAdd(engineHandle,
&filter);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionCommit(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(status != NO_ERROR)
HlprFwpmTransactionAbort(engineHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioProxyDeleteFwpmObjects(_In_ const FWPM_FILTER* pFilter)
{
ASSERT(pFilter);
UINT32 status = NO_ERROR;
HANDLE engineHandle = 0;
HANDLE enumHandle = 0;
UINT32 entryCount = 0;
FWPM_FILTER** ppFilters = 0;
FWPM_FILTER_ENUM_TEMPLATE filterEnumTemplate = {0};
FWPM_PROVIDER_CONTEXT_ENUM_TEMPLATE providerContextEnumTemplate = {0};
GUID calloutKey = {0};
#if(NTDDI_VERSION >= NTDDI_WIN7)
if(pFilter->layerKey == FWPM_LAYER_ALE_CONNECT_REDIRECT_V4 ||
pFilter->layerKey == FWPM_LAYER_ALE_CONNECT_REDIRECT_V6 ||
pFilter->layerKey == FWPM_LAYER_ALE_BIND_REDIRECT_V4 ||
pFilter->layerKey == FWPM_LAYER_ALE_BIND_REDIRECT_V6)
calloutKey = WFPSAMPLER_CALLOUT_PROXY_BY_ALE_REDIRECT;
else
#endif /// (NTDDI_VERSION >= NTDDI_WIN7)
calloutKey = WFPSAMPLER_CALLOUT_PROXY_BY_INJECTION;
calloutKey.Data4[7] = HlprFwpmLayerGetIDByKey(&(pFilter->layerKey)); /// Uniquely identifies the callout used
providerContextEnumTemplate.providerContextType = FWPM_GENERAL_CONTEXT;
filterEnumTemplate.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filterEnumTemplate.layerKey = pFilter->layerKey;
filterEnumTemplate.enumType = FWP_FILTER_ENUM_FULLY_CONTAINED;
filterEnumTemplate.flags = FWP_FILTER_ENUM_FLAG_INCLUDE_BOOTTIME |
FWP_FILTER_ENUM_FLAG_INCLUDE_DISABLED;
filterEnumTemplate.numFilterConditions = pFilter->numFilterConditions;
filterEnumTemplate.filterCondition = pFilter->filterCondition;
filterEnumTemplate.providerContextTemplate = &providerContextEnumTemplate;
filterEnumTemplate.actionMask = FWP_ACTION_FLAG_CALLOUT;
filterEnumTemplate.calloutKey = &calloutKey;
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterCreateEnumHandle(engineHandle,
&filterEnumTemplate,
&enumHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterEnum(engineHandle,
enumHandle,
0xFFFFFFFF,
&ppFilters,
&entryCount);
HLPR_BAIL_ON_FAILURE(status);
if(ppFilters)
{
for(UINT32 filterIndex = 0;
filterIndex < entryCount;
filterIndex++)
{
HlprFwpmFilterDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->filterKey));
HlprFwpmCalloutDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->action.calloutKey));
if(ppFilters[filterIndex]->flags & FWPM_FILTER_FLAG_HAS_PROVIDER_CONTEXT)
HlprFwpmProviderContextDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->providerContextKey));
}
FwpmFreeMemory((void**)&ppFilters);
}
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(enumHandle)
HlprFwpmFilterDestroyEnumHandle(engineHandle,
&enumHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioFastStreamInjectionAddFwpmObjects(_In_ const FWPM_FILTER* pFilter)
{
ASSERT(pFilter);
UINT32 status = NO_ERROR;
HANDLE engineHandle = 0;
FWPM_CALLOUT callout = {0};
FWPM_FILTER filter = {0};
RtlCopyMemory(&filter,
pFilter,
sizeof(FWPM_FILTER));
callout.calloutKey = WFPSAMPLER_CALLOUT_FAST_STREAM_INJECTION;
callout.calloutKey.Data4[7] = HlprFwpmLayerGetIDByKey(&(filter.layerKey)); /// Uniquely identifies the callout used
callout.displayData.name = L"WFPSampler's Fast Stream Injection Callout";
callout.displayData.description = L"Causes callout invocation which blindly injects data back into the stream";
callout.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
callout.applicableLayer = filter.layerKey;
status = HlprGUIDPopulate(&(filter.filterKey));
HLPR_BAIL_ON_FAILURE(status);
filter.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filter.subLayerKey = WFPSAMPLER_SUBLAYER;
filter.weight.type = FWP_UINT8;
filter.weight.uint8 = 0xF;
filter.action.type = FWP_ACTION_CALLOUT_TERMINATING;
filter.action.calloutKey = callout.calloutKey;
if(filter.flags & FWPM_FILTER_FLAG_BOOTTIME ||
filter.flags & FWPM_FILTER_FLAG_PERSISTENT)
callout.flags = FWPM_CALLOUT_FLAG_PERSISTENT;
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionBegin(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmCalloutAdd(engineHandle,
&callout);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterAdd(engineHandle,
&filter);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionCommit(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(status != NO_ERROR)
HlprFwpmTransactionAbort(engineHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioFastStreamInjectionDeleteFwpmObjects(_In_ const FWPM_FILTER* pFilter)
{
ASSERT(pFilter);
UINT32 status = NO_ERROR;
HANDLE engineHandle = 0;
HANDLE enumHandle = 0;
UINT32 entryCount = 0;
FWPM_FILTER** ppFilters = 0;
FWPM_FILTER_ENUM_TEMPLATE filterEnumTemplate = {0};
GUID calloutKey = {0};
calloutKey = WFPSAMPLER_CALLOUT_FAST_STREAM_INJECTION;
calloutKey.Data4[7] = HlprFwpmLayerGetIDByKey(&(pFilter->layerKey)); /// Uniquely identifies the callout used
filterEnumTemplate.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filterEnumTemplate.layerKey = pFilter->layerKey;
filterEnumTemplate.enumType = FWP_FILTER_ENUM_FULLY_CONTAINED;
filterEnumTemplate.flags = FWP_FILTER_ENUM_FLAG_INCLUDE_BOOTTIME |
FWP_FILTER_ENUM_FLAG_INCLUDE_DISABLED;
filterEnumTemplate.numFilterConditions = pFilter->numFilterConditions;
filterEnumTemplate.filterCondition = pFilter->filterCondition;
filterEnumTemplate.actionMask = FWP_ACTION_FLAG_CALLOUT;
filterEnumTemplate.calloutKey = &calloutKey;
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterCreateEnumHandle(engineHandle,
&filterEnumTemplate,
&enumHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterEnum(engineHandle,
enumHandle,
0xFFFFFFFF,
&ppFilters,
&entryCount);
HLPR_BAIL_ON_FAILURE(status);
if(ppFilters)
{
for(UINT32 filterIndex = 0;
filterIndex < entryCount;
filterIndex++)
{
HlprFwpmFilterDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->filterKey));
HlprFwpmCalloutDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->action.calloutKey));
}
FwpmFreeMemory((void**)&ppFilters);
}
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(enumHandle)
HlprFwpmFilterDestroyEnumHandle(engineHandle,
&enumHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioAppContainerDeleteFwpmObjects(_In_ const SID* pPackageID,
_In_ const SID* pUserID)
{
UNREFERENCED_PARAMETER(pUserID);
ASSERT(pPackageID);
ASSERT(pUserID);
UINT32 status = NO_ERROR;
/// UINT32 sidSize = 0;
HANDLE engineHandle = 0;
const GUID pLayerKeys[] = {FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V4,
FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V6,
FWPM_LAYER_ALE_AUTH_CONNECT_V4,
FWPM_LAYER_ALE_AUTH_CONNECT_V6};
const UINT8 NUM_CONDITIONS = 1; /// 2
const UINT8 NUM_OBJECTS = RTL_NUMBER_OF(pLayerKeys);
FWPM_FILTER_CONDITION pFilterConditions[NUM_CONDITIONS] = {0};
pFilterConditions[0].fieldKey = FWPM_CONDITION_ALE_PACKAGE_ID;
pFilterConditions[0].matchType = FWP_MATCH_EQUAL;
pFilterConditions[0].conditionValue.type = FWP_SID;
pFilterConditions[0].conditionValue.sid = (SID*)pPackageID;
/// pFilterConditions[1].fieldKey = FWPM_CONDITION_ALE_USER_ID;
/// pFilterConditions[1].matchType = FWP_MATCH_EQUAL;
/// pFilterConditions[1].conditionValue.type = FWP_SECURITY_DESCRIPTOR_TYPE;
/// pFilterConditions[1].conditionValue.sd = ;
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
UINT32 entryCount = 0;
FWPM_FILTER** ppFilters = 0;
HANDLE enumHandle = 0;
FWPM_FILTER_ENUM_TEMPLATE filterEnumTemplate = {0};
filterEnumTemplate.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filterEnumTemplate.layerKey = pLayerKeys[objectIndex];
filterEnumTemplate.enumType = FWP_FILTER_ENUM_FULLY_CONTAINED;
filterEnumTemplate.flags = FWP_FILTER_ENUM_FLAG_INCLUDE_BOOTTIME |
FWP_FILTER_ENUM_FLAG_INCLUDE_DISABLED;
filterEnumTemplate.numFilterConditions = NUM_CONDITIONS;
filterEnumTemplate.filterCondition = pFilterConditions;
filterEnumTemplate.actionMask = 0xFFFFFFFF;
status = HlprFwpmFilterCreateEnumHandle(engineHandle,
&filterEnumTemplate,
&enumHandle);
HLPR_BAIL_ON_FAILURE_WITH_LABEL(status,
HLPR_BAIL_LABEL_2);
status = HlprFwpmFilterEnum(engineHandle,
enumHandle,
0xFFFFFFFF,
&ppFilters,
&entryCount);
HLPR_BAIL_ON_FAILURE_WITH_LABEL(status,
HLPR_BAIL_LABEL_2);
if(ppFilters)
{
for(UINT32 filterIndex = 0;
filterIndex < entryCount;
filterIndex++)
{
HlprFwpmFilterDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->filterKey));
}
FwpmFreeMemory((void**)&ppFilters);
}
HLPR_BAIL_LABEL_2:
if(enumHandle)
HlprFwpmFilterDestroyEnumHandle(engineHandle,
&enumHandle);
}
HLPR_BAIL_LABEL:
HlprFwpmEngineClose(&engineHandle);
return status;
}
UINT32 PrvScenarioAppContainerAddFwpmObjects(_In_ BOOLEAN persistent = TRUE,
_In_ BOOLEAN bootTime = FALSE)
{
UINT32 status = NO_ERROR;
UINT32 sidSize = 0;
HANDLE engineHandle = 0;
const GUID pLayerKeys[] = {FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V4,
FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V6,
FWPM_LAYER_ALE_AUTH_CONNECT_V4,
FWPM_LAYER_ALE_AUTH_CONNECT_V6};
const UINT32 NUM_OBJECTS = RTL_NUMBER_OF(pLayerKeys);
FWPM_FILTER_CONDITION filterCondition = {0};
FWPM_FILTER pFilters[NUM_OBJECTS] = {0};
/// Only App Containers have a valid (non-NULL) SID for the ALE_PACKAGE_ID
filterCondition.fieldKey = FWPM_CONDITION_ALE_PACKAGE_ID;
filterCondition.matchType = FWP_MATCH_NOT_EQUAL;
filterCondition.conditionValue.type = FWP_SID;
#pragma warning(push)
#pragma warning(disable: 6388) /// filterCondition.conditionValue.sid guaranteed to be 0 due to ZeroMemory call
status = HlprSIDGetWellKnown(WinNullSid,
&(filterCondition.conditionValue.sid),
&sidSize);
HLPR_BAIL_ON_FAILURE(status);
#pragma warning(pop)
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
status = HlprGUIDPopulate(&(pFilters[objectIndex].filterKey));
HLPR_BAIL_ON_FAILURE(status);
pFilters[objectIndex].displayData.name = L"WFPSampler's AppContainer Scenario Filter";
pFilters[objectIndex].displayData.description = L"Trust Windows Service Hardening to handle all App Containers";
pFilters[objectIndex].flags |= FWPM_FILTER_FLAG_PERSISTENT;
pFilters[objectIndex].providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
pFilters[objectIndex].layerKey = pLayerKeys[objectIndex];
pFilters[objectIndex].subLayerKey = WFPSAMPLER_SUBLAYER;
pFilters[objectIndex].weight.type = FWP_UINT8;
pFilters[objectIndex].weight.uint8 = 0xF;
pFilters[objectIndex].numFilterConditions = 1;
pFilters[objectIndex].filterCondition = &filterCondition;
pFilters[objectIndex].action.type = FWP_ACTION_PERMIT;
if(!persistent)
pFilters[objectIndex].flags ^= FWPM_FILTER_FLAG_PERSISTENT;
if(bootTime)
{
if(pFilters[objectIndex].flags & FWPM_FILTER_FLAG_PERSISTENT)
pFilters[objectIndex].flags ^= FWPM_FILTER_FLAG_PERSISTENT;
pFilters[objectIndex].flags |= FWPM_FILTER_FLAG_BOOTTIME;
}
}
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionBegin(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
status = HlprFwpmFilterAdd(engineHandle,
&(pFilters[objectIndex]));
HLPR_BAIL_ON_FAILURE(status);
}
status = HlprFwpmTransactionCommit(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
HLPR_BAIL_LABEL:
HlprSIDDestroy(&(filterCondition.conditionValue.sid));
if(engineHandle)
{
if(status != NO_ERROR)
HlprFwpmTransactionAbort(engineHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioAppContainerAddFwpmObjects(_In_ const SID* pPackageID,
_In_ const SID* pUserID,
_In_opt_ PCWSTR pDisplayName,
_In_ BOOLEAN persistent = TRUE,
_In_ BOOLEAN bootTime = FALSE)
{
UNREFERENCED_PARAMETER(pUserID);
ASSERT(pPackageID);
ASSERT(pUserID);
UINT32 status = NO_ERROR;
/// UINT32 sidSize = 0;
HANDLE engineHandle = 0;
const GUID pLayerKeys[] = {FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V4,
FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V6,
FWPM_LAYER_ALE_AUTH_CONNECT_V4,
FWPM_LAYER_ALE_AUTH_CONNECT_V6};
const UINT8 NUM_CONDITIONS = 1; /// 2
const UINT8 NUM_OBJECTS = RTL_NUMBER_OF(pLayerKeys);
FWPM_FILTER_CONDITION pFilterConditions[NUM_CONDITIONS] = {0};
FWPM_FILTER pFilters[NUM_OBJECTS] = {0};
/// status = HlprSecurityDescriptorGetSelfRelativeForUser();
pFilterConditions[0].fieldKey = FWPM_CONDITION_ALE_PACKAGE_ID;
pFilterConditions[0].matchType = FWP_MATCH_EQUAL;
pFilterConditions[0].conditionValue.type = FWP_SID;
pFilterConditions[0].conditionValue.sid = (SID*)pPackageID;
/// pFilterConditions[1].fieldKey = FWPM_CONDITION_ALE_USER_ID;
/// pFilterConditions[1].matchType = FWP_MATCH_EQUAL;
/// pFilterConditions[1].conditionValue.type = FWP_SECURITY_DESCRIPTOR_TYPE;
/// pFilterConditions[1].conditionValue.sd = ;
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
status = HlprGUIDPopulate(&(pFilters[objectIndex].filterKey));
HLPR_BAIL_ON_FAILURE(status);
pFilters[objectIndex].displayData.name = L"WFPSampler's AppContainer Scenario Filter";
pFilters[objectIndex].displayData.description = (PWSTR)pDisplayName;
pFilters[objectIndex].flags |= FWPM_FILTER_FLAG_PERSISTENT;
pFilters[objectIndex].providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
pFilters[objectIndex].layerKey = pLayerKeys[objectIndex];
pFilters[objectIndex].subLayerKey = WFPSAMPLER_SUBLAYER;
pFilters[objectIndex].weight.type = FWP_UINT8;
pFilters[objectIndex].weight.uint8 = 0xF;
pFilters[objectIndex].numFilterConditions = NUM_CONDITIONS;
pFilters[objectIndex].filterCondition = pFilterConditions;
pFilters[objectIndex].action.type = FWP_ACTION_PERMIT;
if(!persistent)
pFilters[objectIndex].flags ^= FWPM_FILTER_FLAG_PERSISTENT;
if(bootTime)
{
if(pFilters[objectIndex].flags & FWPM_FILTER_FLAG_PERSISTENT)
pFilters[objectIndex].flags ^= FWPM_FILTER_FLAG_PERSISTENT;
pFilters[objectIndex].flags |= FWPM_FILTER_FLAG_BOOTTIME;
}
}
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionBegin(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
status = HlprFwpmFilterAdd(engineHandle,
&(pFilters[objectIndex]));
HLPR_BAIL_ON_FAILURE(status);
}
status = HlprFwpmTransactionCommit(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(status != NO_ERROR)
HlprFwpmTransactionAbort(engineHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}
UINT32 PrvScenarioAppContainerDeleteFwpmObjects()
{
UINT32 status = NO_ERROR;
UINT32 sidSize = 0;
HANDLE engineHandle = 0;
const GUID pLayerKeys[] = {FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V4,
FWPM_LAYER_ALE_AUTH_RECV_ACCEPT_V6,
FWPM_LAYER_ALE_AUTH_CONNECT_V4,
FWPM_LAYER_ALE_AUTH_CONNECT_V6};
const UINT32 NUM_OBJECTS = RTL_NUMBER_OF(pLayerKeys);
FWPM_FILTER_CONDITION filterCondition = {0};
/// Only App Containers have a valid (non-NULL) SID for the ALE_PACKAGE_ID
filterCondition.fieldKey = FWPM_CONDITION_ALE_PACKAGE_ID;
filterCondition.matchType = FWP_MATCH_NOT_EQUAL;
filterCondition.conditionValue.type = FWP_SID;
#pragma warning(push)
#pragma warning(disable: 6388) /// filterCondition.conditionValue.sid guaranteed to be 0 due to ZeroMemory call
status = HlprSIDGetWellKnown(WinNullSid,
&(filterCondition.conditionValue.sid),
&sidSize);
HLPR_BAIL_ON_FAILURE(status);
#pragma warning(pop)
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
for(UINT32 objectIndex = 0;
objectIndex < NUM_OBJECTS;
objectIndex++)
{
HANDLE enumHandle = 0;
UINT32 entryCount = 0;
FWPM_FILTER** ppFilters = 0;
FWPM_FILTER_ENUM_TEMPLATE filterEnumTemplate = {0};
filterEnumTemplate.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filterEnumTemplate.layerKey = pLayerKeys[objectIndex];
filterEnumTemplate.enumType = FWP_FILTER_ENUM_FULLY_CONTAINED;
filterEnumTemplate.flags = FWP_FILTER_ENUM_FLAG_INCLUDE_BOOTTIME |
FWP_FILTER_ENUM_FLAG_INCLUDE_DISABLED;
filterEnumTemplate.numFilterConditions = 1;
filterEnumTemplate.filterCondition = &filterCondition;
filterEnumTemplate.actionMask = 0xFFFFFFFF;
status = HlprFwpmFilterCreateEnumHandle(engineHandle,
&filterEnumTemplate,
&enumHandle);
HLPR_BAIL_ON_FAILURE_WITH_LABEL(status,
HLPR_BAIL_LABEL_2);
status = HlprFwpmFilterEnum(engineHandle,
enumHandle,
0xFFFFFFFF,
&ppFilters,
&entryCount);
HLPR_BAIL_ON_FAILURE_WITH_LABEL(status,
HLPR_BAIL_LABEL_2);
if(ppFilters)
{
for(UINT32 filterIndex = 0;
filterIndex < entryCount;
filterIndex++)
{
HlprFwpmFilterDeleteByKey(engineHandle,
&(ppFilters[filterIndex]->filterKey));
}
FwpmFreeMemory((void**)&ppFilters);
}
HLPR_BAIL_LABEL_2:
if(enumHandle)
HlprFwpmFilterDestroyEnumHandle(engineHandle,
&enumHandle);
}
HLPR_BAIL_LABEL:
HlprSIDDestroy(&(filterCondition.conditionValue.sid));
HlprFwpmEngineClose(&engineHandle);
return status;
}
UINT32 PrvBasicPacketModificationScenarioAddFwpmObjects(_In_ const FWPM_FILTER* pFilter,
_In_ const PC_BASIC_PACKET_MODIFICATION_DATA* pPCBasicPacketModificationData)
{
ASSERT(pFilter);
ASSERT(pPCBasicPacketModificationData);
UINT32 status = NO_ERROR;
HANDLE engineHandle = 0;
FWP_BYTE_BLOB byteBlob = {0};
FWPM_PROVIDER_CONTEXT providerContext = {0};
FWPM_CALLOUT callout = {0};
FWPM_FILTER filter = {0};
RtlCopyMemory(&filter,
pFilter,
sizeof(FWPM_FILTER));
status = HlprGUIDPopulate(&(providerContext.providerContextKey));
HLPR_BAIL_ON_FAILURE(status);
providerContext.displayData.name = L"WFPSampler's Basic Packet Modification Provider Context";
providerContext.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
providerContext.type = FWPM_GENERAL_CONTEXT;
providerContext.dataBuffer = &byteBlob;
providerContext.dataBuffer->size = sizeof(PC_BASIC_PACKET_MODIFICATION_DATA);
providerContext.dataBuffer->data = (UINT8*)pPCBasicPacketModificationData;
callout.calloutKey = WFPSAMPLER_CALLOUT_BASIC_PACKET_MODIFICATION;
callout.calloutKey.Data4[7] = HlprFwpmLayerGetIDByKey(&(filter.layerKey)); /// Uniquely identifies the callout used
callout.displayData.name = L"WFPSampler's Basic Packet Modification Callout";
callout.displayData.description = L"Causes callout invocation which modifies the headers and injects traffic back";
callout.flags = FWPM_CALLOUT_FLAG_USES_PROVIDER_CONTEXT;
callout.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
callout.applicableLayer = filter.layerKey;
status = HlprGUIDPopulate(&(filter.filterKey));
HLPR_BAIL_ON_FAILURE(status);
filter.flags |= FWPM_FILTER_FLAG_HAS_PROVIDER_CONTEXT;
filter.providerKey = (GUID*)&WFPSAMPLER_PROVIDER;
filter.subLayerKey = WFPSAMPLER_SUBLAYER;
filter.weight.type = FWP_UINT8;
filter.weight.uint8 = 0xF;
filter.action.type = FWP_ACTION_CALLOUT_UNKNOWN;
filter.action.calloutKey = callout.calloutKey;
filter.providerContextKey = providerContext.providerContextKey;
if(filter.flags & FWPM_FILTER_FLAG_BOOTTIME ||
filter.flags & FWPM_FILTER_FLAG_PERSISTENT)
{
providerContext.flags |= FWPM_PROVIDER_CONTEXT_FLAG_PERSISTENT;
callout.flags |= FWPM_CALLOUT_FLAG_PERSISTENT;
}
status = HlprFwpmEngineOpen(&engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionBegin(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmProviderContextAdd(engineHandle,
&providerContext);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmCalloutAdd(engineHandle,
&callout);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmFilterAdd(engineHandle,
&filter);
HLPR_BAIL_ON_FAILURE(status);
status = HlprFwpmTransactionCommit(engineHandle);
HLPR_BAIL_ON_FAILURE(status);
HLPR_BAIL_LABEL:
if(engineHandle)
{
if(status != NO_ERROR)
HlprFwpmTransactionAbort(engineHandle);
HlprFwpmEngineClose(&engineHandle);
}
return status;
}