Sample Code
Windows Driver Samples/ Windows Filtering Platform Sample/ C++/ sys/ ClassifyFunctions_FastStreamInjectionCallouts.cpp/
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 | //////////////////////////////////////////////////////////////////////////////////////////////////////// Copyright (c) 2012 Microsoft Corporation. All Rights Reserved.//// Module Name:// ClassifyFunctions_FastStreamInjectionCallouts.cpp//// Abstract:// This module contains WFP Classify functions that inject data back into the stream using// the clone / block / inject method. This method is inline only, no modification,// and uses as little validation and error checking as possible. These functions are meant// for test performance purposes only.//// Naming Convention://// <Module><Scenario>// // i.e.// ClassifyFastStreamInjection//// <Module>// Classify - Function is an FWPS_CALLOUT_CLASSIFY_FN// <Scenario>// FastStreamInjection - Function demonstrates the clone / block / inject model in the // fastest form available (inline, no validation, etc.).//// Private Functions://// Public Functions:// ClassifyFastStreamInjection(),//// Author:// Dusty Harper (DHarper)//// Revision History://// [ Month ][Day] [Year] - [Revision]-[ Comments ]// May 01, 2010 - 1.0 - Creation//////////////////////////////////////////////////////////////////////////////////////////////////////#include "Framework_WFPSamplerCalloutDriver.h" /// .#include "ClassifyFunctions_FastStreamInjectionCallouts.tmh" /// $(OBJ_PATH)\$(O)\#if(NTDDI_VERSION >= NTDDI_WIN7)/** @classify_function="ClassifyFastStreamInjection" Purpose: Blocks the current stream data and injects a clone back to the stack without modification. <br> <br> Notes: Applies to the following layers: <br> FWPS_LAYER_STREAM_V{4/6} <br> <br> Intended for test performance purposes only. <br> <br>*/_IRQL_requires_min_(PASSIVE_LEVEL)_IRQL_requires_max_(DISPATCH_LEVEL)_IRQL_requires_same_VOID ClassifyFastStreamInjection(_In_ const FWPS_INCOMING_VALUES* pClassifyValues, _In_ const FWPS_INCOMING_METADATA_VALUES* pMetadata, _Inout_opt_ VOID* pStreamCalloutIOPacket, _In_opt_ const VOID* pClassifyContext, _In_ const FWPS_FILTER* pFilter, _In_ UINT64 flowContext, _Inout_ FWPS_CLASSIFY_OUT* pClassifyOut){ UNREFERENCED_PARAMETER(pClassifyContext); UNREFERENCED_PARAMETER(flowContext); if(pStreamCalloutIOPacket && pClassifyOut->rights & FWPS_RIGHT_ACTION_WRITE) { NTSTATUS status = STATUS_SUCCESS; FWPS_STREAM_CALLOUT_IO_PACKET* pStreamPacket = (FWPS_STREAM_CALLOUT_IO_PACKET*)pStreamCalloutIOPacket; FWP_DIRECTION direction = (FWP_DIRECTION)pClassifyValues->incomingValue[FWPS_FIELD_STREAM_V4_DIRECTION].value.uint32; HANDLE injectionHandle = 0; UINT64 flowID = 0; UINT32 streamFlags = pStreamPacket->streamData->flags; NET_BUFFER_LIST* pNetBufferListChain = 0; if(FWPS_IS_METADATA_FIELD_PRESENT(pMetadata, FWPS_METADATA_FIELD_FLOW_HANDLE)) flowID = pMetadata->flowHandle; if(pClassifyValues->layerId == FWPS_LAYER_STREAM_V4) { if(direction == FWP_DIRECTION_OUTBOUND) injectionHandle = g_IPv4OutboundStreamInjectionHandle; else injectionHandle = g_IPv4InboundStreamInjectionHandle; } else if(pClassifyValues->layerId == FWPS_LAYER_STREAM_V6) { if(direction == FWP_DIRECTION_OUTBOUND) injectionHandle = g_IPv6OutboundStreamInjectionHandle; else injectionHandle = g_IPv6InboundStreamInjectionHandle; } else HLPR_BAIL; if(!(streamFlags & FWPS_STREAM_FLAG_RECEIVE) && !(streamFlags & FWPS_STREAM_FLAG_SEND)) streamFlags |= direction ? FWPS_STREAM_FLAG_RECEIVE : FWPS_STREAM_FLAG_SEND; pStreamPacket->countBytesRequired = 0; pStreamPacket->countBytesEnforced = pStreamPacket->streamData->dataLength; pStreamPacket->streamAction = FWPS_STREAM_ACTION_NONE; status = FwpsCloneStreamData(pStreamPacket->streamData, g_pNDISPoolData->nblPoolHandle, g_pNDISPoolData->nbPoolHandle, 0, &pNetBufferListChain); if(status != STATUS_SUCCESS) { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_ERROR_LEVEL, " !!!! PerformBasicStreamInjection : FwpsCloneStreamData() [status: %#x]\n", status); HLPR_BAIL; } pClassifyOut->actionType = FWP_ACTION_BLOCK; pClassifyOut->rights ^= FWPS_RIGHT_ACTION_WRITE; status = FwpsStreamInjectAsync(injectionHandle, 0, 0, flowID, pFilter->action.calloutId, pClassifyValues->layerId, streamFlags, pNetBufferListChain, pStreamPacket->streamData->dataLength, CompleteFastStreamInjection, 0); HLPR_BAIL_LABEL: if(status != STATUS_SUCCESS && pNetBufferListChain) { KIRQL irql = KeGetCurrentIrql(); FwpsDiscardClonedStreamData(pNetBufferListChain, 0, irql == DISPATCH_LEVEL ? TRUE : FALSE); } } return;}#else/** @classify_function="ClassifyFastStreamInjection" Purpose: Blocks the current stream data and injects a clone back to the stack without modification. <br> <br> Notes: Applies to the following layers: <br> FWPS_LAYER_STREAM_V{4/6} <br> <br> Intended for test performance purposes only. <br> <br>*/_IRQL_requires_min_(PASSIVE_LEVEL)_IRQL_requires_max_(DISPATCH_LEVEL)_IRQL_requires_same_VOID ClassifyFastStreamInjection(_In_ const FWPS_INCOMING_VALUES* pClassifyValues, _In_ const FWPS_INCOMING_METADATA_VALUES0* pMetadata, _Inout_opt_ VOID* pStreamCalloutIOPacket, _In_ const FWPS_FILTER* pFilter, _In_ UINT64 flowContext, _Inout_ FWPS_CLASSIFY_OUT* pClassifyOut){ UNREFERENCED_PARAMETER(flowContext); if(pStreamCalloutIOPacket && pClassifyOut->rights & FWPS_RIGHT_ACTION_WRITE) { NTSTATUS status = STATUS_SUCCESS; FWPS_STREAM_CALLOUT_IO_PACKET* pStreamPacket = (FWPS_STREAM_CALLOUT_IO_PACKET*)pStreamCalloutIOPacket; FWP_DIRECTION direction = (FWP_DIRECTION)pClassifyValues->incomingValue[FWPS_FIELD_STREAM_V4_DIRECTION].value.uint32; HANDLE injectionHandle = 0; UINT64 flowID = 0; UINT32 streamFlags = pStreamPacket->streamData->flags; NET_BUFFER_LIST* pNetBufferListChain = 0; if(FWPS_IS_METADATA_FIELD_PRESENT(pMetadata, FWPS_METADATA_FIELD_FLOW_HANDLE)) flowID = pMetadata->flowHandle; if(pClassifyValues->layerId == FWPS_LAYER_STREAM_V4) { if(direction == FWP_DIRECTION_OUTBOUND) injectionHandle = g_IPv4OutboundStreamInjectionHandle; else injectionHandle = g_IPv4InboundStreamInjectionHandle; } else if(pClassifyValues->layerId == FWPS_LAYER_STREAM_V6) { if(direction == FWP_DIRECTION_OUTBOUND) injectionHandle = g_IPv6OutboundStreamInjectionHandle; else injectionHandle = g_IPv6InboundStreamInjectionHandle; } else HLPR_BAIL; if(!(streamFlags & FWPS_STREAM_FLAG_RECEIVE) && !(streamFlags & FWPS_STREAM_FLAG_SEND)) streamFlags |= direction ? FWPS_STREAM_FLAG_RECEIVE : FWPS_STREAM_FLAG_SEND; pStreamPacket->countBytesRequired = 0; pStreamPacket->countBytesEnforced = pStreamPacket->streamData->dataLength; pStreamPacket->streamAction = FWPS_STREAM_ACTION_NONE; status = FwpsCloneStreamData(pStreamPacket->streamData, g_pNDISPoolData->nblPoolHandle, g_pNDISPoolData->nbPoolHandle, 0, &pNetBufferListChain); if(status != STATUS_SUCCESS) { DbgPrintEx(DPFLTR_IHVNETWORK_ID, DPFLTR_ERROR_LEVEL, " !!!! PerformBasicStreamInjection : FwpsCloneStreamData() [status: %#x]\n", status); HLPR_BAIL; } pClassifyOut->actionType = FWP_ACTION_BLOCK; pClassifyOut->rights ^= FWPS_RIGHT_ACTION_WRITE; status = FwpsStreamInjectAsync(injectionHandle, 0, 0, flowID, pFilter->action.calloutId, pClassifyValues->layerId, streamFlags, pNetBufferListChain, pStreamPacket->streamData->dataLength, CompleteFastStreamInjection, 0); HLPR_BAIL_LABEL: if(status != STATUS_SUCCESS && pNetBufferListChain) { KIRQL irql = KeGetCurrentIrql(); FwpsDiscardClonedStreamData(pNetBufferListChain, 0, irql == DISPATCH_LEVEL ? TRUE : FALSE); } } return;}#endif // (NTDDI_VERSION >= NTDDI_WIN7) |
Our Services
-
What our customers say about us?
Read our customer testimonials to find out why our clients keep returning for their projects.
View Testimonials
