1 /*
2 * PROJECT: Filesystem Filter Manager
3 * LICENSE: GPL - See COPYING in the top level directory
4 * FILE: drivers/filters/fltmgr/Dispatch.c
5 * PURPOSE: Contains dispatch handler routines
6 * PROGRAMMERS: Ged Murphy (gedmurphy@reactos.org)
7 */
8
9 /* INCLUDES ******************************************************************/
10
11 #include "fltmgr.h"
12 #include "fltmgrint.h"
13 #include "fltmgr_shared.h"
14
15 #define NDEBUG
16 #include <debug.h>
17
18
19 /* DATA *********************************************************************/
20
21 NTSTATUS
22 HandleLoadUnloadIoctl(
23 _In_ PDEVICE_OBJECT DeviceObject,
24 _Inout_ PIRP Irp
25 );
26
27 NTSTATUS
28 HandleFindFirstIoctl(
29 _In_ PDEVICE_OBJECT DeviceObject,
30 _Inout_ PIRP Irp
31 );
32
33
34 /* sdsfds *******************************************************************/
35
36 NTSTATUS
FltpDeviceControlHandler(_In_ PDEVICE_OBJECT DeviceObject,_Inout_ PIRP Irp)37 FltpDeviceControlHandler(_In_ PDEVICE_OBJECT DeviceObject,
38 _Inout_ PIRP Irp)
39 {
40 PIO_STACK_LOCATION StackPtr;
41 ULONG ControlCode;
42 NTSTATUS Status;
43
44 StackPtr = IoGetCurrentIrpStackLocation(Irp);
45 FLT_ASSERT(StackPtr->MajorFunction == IRP_MJ_DEVICE_CONTROL);
46
47 ControlCode = StackPtr->Parameters.DeviceIoControl.IoControlCode;
48 switch (ControlCode)
49 {
50 case IOCTL_FILTER_LOAD:
51 Status = HandleLoadUnloadIoctl(DeviceObject, Irp);
52 break;
53
54 case IOCTL_FILTER_UNLOAD:
55 Status = HandleLoadUnloadIoctl(DeviceObject, Irp);
56 break;
57
58 case IOCTL_FILTER_CREATE:
59 Status = STATUS_NOT_SUPPORTED;
60 break;
61
62 case IOCTL_FILTER_ATTATCH:
63 Status = STATUS_NOT_SUPPORTED;
64 break;
65
66 case IOCTL_FILTER_DETATCH:
67 Status = STATUS_NOT_SUPPORTED;
68 break;
69
70 case IOCTL_FILTER_SEND_MESSAGE:
71 Status = STATUS_NOT_SUPPORTED;
72 break;
73
74 case IOCTL_FILTER_GET_MESSAGE:
75 Status = STATUS_NOT_SUPPORTED;
76 break;
77
78 case IOCTL_FILTER_REPLY_MESSAGE:
79 Status = STATUS_NOT_SUPPORTED;
80 break;
81
82 case IOCTL_FILTER_FIND_FIRST:
83 Status = STATUS_NOT_SUPPORTED;
84 break;
85
86 case IOCTL_FILTER_FIND_NEXT:
87 Status = STATUS_NOT_SUPPORTED;
88 break;
89
90 case IOCTL_FILTER_GET_INFO:
91 Status = STATUS_NOT_SUPPORTED;
92 break;
93
94 default:
95 Status = STATUS_INVALID_PARAMETER;
96 break;
97 }
98
99 return Status;
100 }
101
102 NTSTATUS
FltpDispatchHandler(_In_ PDEVICE_OBJECT DeviceObject,_Inout_ PIRP Irp)103 FltpDispatchHandler(_In_ PDEVICE_OBJECT DeviceObject,
104 _Inout_ PIRP Irp)
105 {
106 PIO_STACK_LOCATION StackPtr;
107 StackPtr = IoGetCurrentIrpStackLocation(Irp);
108 UNREFERENCED_PARAMETER(StackPtr);
109
110 // implement me
111
112 return STATUS_SUCCESS;
113 }
114
115
116 /* INTERNAL FUNCTIONS ******************************************************/
117
118 NTSTATUS
HandleLoadUnloadIoctl(_In_ PDEVICE_OBJECT DeviceObject,_Inout_ PIRP Irp)119 HandleLoadUnloadIoctl(_In_ PDEVICE_OBJECT DeviceObject,
120 _Inout_ PIRP Irp)
121 {
122 PIO_STACK_LOCATION StackPtr;
123 UNICODE_STRING Name;
124 PFILTER_NAME FilterName;
125 ULONG BufferLength;
126 ULONG ControlCode;
127 NTSTATUS Status;
128
129 /* Get the IOCTL data from the stack pointer */
130 StackPtr = IoGetCurrentIrpStackLocation(Irp);
131 BufferLength = StackPtr->Parameters.DeviceIoControl.InputBufferLength;
132 ControlCode = StackPtr->Parameters.DeviceIoControl.IoControlCode;
133
134 FLT_ASSERT(ControlCode == IOCTL_FILTER_LOAD || ControlCode == IOCTL_FILTER_UNLOAD);
135
136 /* Make sure the buffer is valid */
137 if (BufferLength < sizeof(FILTER_NAME))
138 return STATUS_INVALID_PARAMETER;
139
140 /* Convert the file name buffer into a string */
141 FilterName = (PFILTER_NAME)Irp->AssociatedIrp.SystemBuffer;
142 Name.Length = FilterName->Length;
143 Name.MaximumLength = FilterName->Length;
144 Name.Buffer = (PWCH)((PCHAR)FilterName + FIELD_OFFSET(FILTER_NAME, FilterName[0]));
145
146 /* Forward the request to our Flt routines */
147 if (ControlCode == IOCTL_FILTER_LOAD)
148 {
149 Status = FltLoadFilter(&Name);
150 }
151 else
152 {
153 Status = FltUnloadFilter(&Name);
154 }
155
156 return Status;
157 }
158