Sample Code

Windows Driver Samples/ Windows Filtering Platform Sample/ C++/ sys/ CompletionFunctions_PendAuthorizationCallouts.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
////////////////////////////////////////////////////////////////////////////////////////////////////
//
//   Copyright (c) 2012 Microsoft Corporation.  All Rights Reserved.
//
//   Module Name:
//      CompletionFunctions_PendAuthorizationCallouts.cpp
//
//   Abstract:
//      This module contains WFP Completion functions for pended authorizations that inject data
//         back into the data path.
//
//   Naming Convention:
//
//      <Module><Scenario>
// 
//      i.e.
//       CompleteBasicPacketInjection
//
//       <Module>
//          Complete                        - Function is an FWPS_INJECT_COMPLETE function.
//       <Scenario>
//          PendAuthorization               - Function demonstrates the clone / block / inject
//                                               model for pended items.
//
//      <Object><Action>
//
//      i.e.
//       PendAuthorizationCompletionDataDestroy
//
//       <Object>
//        {
//          PendAuthorizationCompletionData - pertains to PEND_AUTHORIZATION_COMPLETION_DATA.
//        }
//       <Action>
//          Destroy                         - Cleans up and frees all memory in the object.
//
//   Private Functions:
//      PendAuthorizationCompletionDataDestroy(),
//
//   Public Functions:
//      CompletePendAuthorization(),
//
//   Author:
//      Dusty Harper      (DHarper)
//
//   Revision History:
//
//      [ Month ][Day] [Year] - [Revision]-[ Comments ]
//      May       01,   2010  -     1.0   -  Creation
//
////////////////////////////////////////////////////////////////////////////////////////////////////
 
#include "Framework_WFPSamplerCalloutDriver.h"               /// .
#include "CompletionFunctions_PendAuthorizationCallouts.tmh" /// $(OBJ_PATH)\$(O)\
 
/**
 @private_function="PendAuthorizationCompletionDataDestroy"
  
   Purpose:                                                                                     <br>
                                                                                                <br>
   Notes:                                                                                       <br>
                                                                                                <br>
   MSDN_Ref:                                                                                    <br>
*/
_At_(*ppCompletionData, _Pre_ _Notnull_)
_At_(*ppCompletionData, _Post_ _Null_ __drv_freesMem(Pool))
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
_Success_(*ppCompletionData == 0)
VOID PendAuthorizationCompletionDataDestroy(_Inout_ PEND_AUTHORIZATION_COMPLETION_DATA** ppCompletionData,
                                            _In_ BOOLEAN override)                                         /* FALSE */
{
#if DBG
    
   DbgPrintEx(DPFLTR_IHVNETWORK_ID,
              DPFLTR_INFO_LEVEL,
              " ---> PendAuthorizationCompletionDataDestroy()\n");
 
#endif /// DBG
    
   NT_ASSERT(ppCompletionData);
   NT_ASSERT(*ppCompletionData);
 
   PEND_AUTHORIZATION_COMPLETION_DATA* pCompletionData = *ppCompletionData;
   KIRQL                               originalIRQL    = PASSIVE_LEVEL;
 
   KeAcquireSpinLock(&(pCompletionData->spinLock),
                     &originalIRQL);
 
   pCompletionData->refCount--;
 
   if(pCompletionData->pClassifyData)
   {
      if(!(pCompletionData->performedInline))
         KrnlHlprClassifyDataDestroyLocalCopy(&(pCompletionData->pClassifyData));
      else
      {
         HLPR_DELETE(pCompletionData->pClassifyData,
                     WFPSAMPLER_CALLOUT_DRIVER_TAG);
      }
   }
 
   if(pCompletionData->pInjectionData)
      KrnlHlprInjectionDataDestroy(&(pCompletionData->pInjectionData));
 
   if(pCompletionData->pSendParams)
   {
      HLPR_DELETE_ARRAY(pCompletionData->pSendParams->remoteAddress,
                        WFPSAMPLER_CALLOUT_DRIVER_TAG);
 
      HLPR_DELETE(pCompletionData->pSendParams,
                  WFPSAMPLER_CALLOUT_DRIVER_TAG);
   }
 
   KeReleaseSpinLock(&(pCompletionData->spinLock),
                     originalIRQL);
 
   if(pCompletionData->refCount == 0 ||
      override)
   {
      HLPR_DELETE(*ppCompletionData,
                  WFPSAMPLER_CALLOUT_DRIVER_TAG);
   }
 
#if DBG
    
   DbgPrintEx(DPFLTR_IHVNETWORK_ID,
              DPFLTR_INFO_LEVEL,
              " <--- PendAuthorizationCompletionDataDestroy()\n");
 
#endif /// DBG
    
   return;
}
 
/**
 @completion_function="CompletePendAuthorization"
  
   Purpose:                                                                                     <br>
                                                                                                <br>
   Notes:                                                                                       <br>
                                                                                                <br>
   MSDN_Ref: HTTP://MSDN.Microsoft.com/En-Us/Library/Windows/Hardware/FF545018.aspx             <br>
*/
_IRQL_requires_min_(PASSIVE_LEVEL)
_IRQL_requires_max_(DISPATCH_LEVEL)
_IRQL_requires_same_
VOID CompletePendAuthorization(_In_ VOID* pContext,
                               _Inout_ NET_BUFFER_LIST* pNetBufferList,
                               _In_ BOOLEAN dispatchLevel)
{
#if DBG
    
   DbgPrintEx(DPFLTR_IHVNETWORK_ID,
              DPFLTR_INFO_LEVEL,
              " ---> CompletePendAuthorization()\n");
 
#endif /// DBG
    
   UNREFERENCED_PARAMETER(dispatchLevel);
 
   NT_ASSERT(pContext);
   NT_ASSERT(pNetBufferList);
   NT_ASSERT(NT_SUCCESS(pNetBufferList->Status));
 
   if(pNetBufferList->Status != STATUS_SUCCESS)
      DbgPrintEx(DPFLTR_IHVNETWORK_ID,
                 DPFLTR_ERROR_LEVEL,
                 " !!!! CompletePendAuthorization() [status: %#x]\n",
                 pNetBufferList->Status);
 
   FwpsFreeCloneNetBufferList(pNetBufferList,
                              0);
 
   PendAuthorizationCompletionDataDestroy((PEND_AUTHORIZATION_COMPLETION_DATA**)&pContext);
 
#if DBG
    
   DbgPrintEx(DPFLTR_IHVNETWORK_ID,
              DPFLTR_INFO_LEVEL,
              " <--- CompletePendAuthorization()\n");
 
#endif /// DBG
    
   return;
}

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

© 2011-2025 All Rights Reserved. Joya Systems. 4425 South Mopac Building II Suite 101 Austin, TX 78735 Tel: 800-DEV-KERNEL

Privacy Policy. Terms of use. Valid XHTML & CSS