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
|
//*************************************************************
//
// SID management functions.
//
// THESE FUNCTIONS ARE WINDOWS NT SPECIFIC!!!!!
//
// Microsoft Confidential
// Copyright (c) Microsoft Corporation 1995
// All rights reserved
//
//*************************************************************
#include "uenv.h"
LPTSTR GetSidString(HANDLE UserToken);
VOID DeleteSidString(LPTSTR SidString);
PSID GetUserSid (HANDLE UserToken);
VOID DeleteUserSid(PSID Sid);
#define DebugMsg(x)
/***************************************************************************\
* GetSidString
*
* Allocates and returns a string representing the sid of the current user
* The returned pointer should be freed using DeleteSidString().
*
* Returns a pointer to the string or NULL on failure.
*
* History:
* 26-Aug-92 Davidc Created
*
\***************************************************************************/
LPTSTR GetSidString(HANDLE UserToken)
{
NTSTATUS NtStatus;
PSID UserSid;
UNICODE_STRING UnicodeString;
#ifndef UNICODE
STRING String;
#endif
//
// Get the user sid
//
UserSid = GetUserSid(UserToken);
if (UserSid == NULL) {
DebugMsg((DM_WARNING, TEXT("GetSidString: GetUserSid returned NULL")));
return NULL;
}
//
// Convert user SID to a string.
//
NtStatus = RtlConvertSidToUnicodeString(
&UnicodeString,
UserSid,
(BOOLEAN)TRUE // Allocate
);
//
// We're finished with the user sid
//
DeleteUserSid(UserSid);
//
// See if the conversion to a string worked
//
if (!NT_SUCCESS(NtStatus)) {
DebugMsg((DM_WARNING, TEXT("GetSidString: RtlConvertSidToUnicodeString failed, status = 0x%x"),
NtStatus));
return NULL;
}
#ifdef UNICODE
return(UnicodeString.Buffer);
#else
//
// Convert the string to ansi
//
NtStatus = RtlUnicodeStringToAnsiString(&String, &UnicodeString, TRUE);
RtlFreeUnicodeString(&UnicodeString);
if (!NT_SUCCESS(NtStatus)) {
DebugMsg((DM_WARNING, TEXT("GetSidString: RtlUnicodeStringToAnsiString failed, status = 0x%x"),
status));
return NULL;
}
return(String.Buffer);
#endif
}
/***************************************************************************\
* DeleteSidString
*
* Frees up a sid string previously returned by GetSidString()
*
* Returns nothing.
*
* History:
* 26-Aug-92 Davidc Created
*
\***************************************************************************/
VOID DeleteSidString(LPTSTR SidString)
{
#ifdef UNICODE
UNICODE_STRING String;
RtlInitUnicodeString(&String, SidString);
RtlFreeUnicodeString(&String);
#else
ANSI_STRING String;
RtlInitAnsiString(&String, SidString);
RtlFreeAnsiString(&String);
#endif
}
/***************************************************************************\
* GetUserSid
*
* Allocs space for the user sid, fills it in and returns a pointer. Caller
* The sid should be freed by calling DeleteUserSid.
*
* Note the sid returned is the user's real sid, not the per-logon sid.
*
* Returns pointer to sid or NULL on failure.
*
* History:
* 26-Aug-92 Davidc Created.
\***************************************************************************/
PSID GetUserSid (HANDLE UserToken)
{
PTOKEN_USER pUser;
PSID pSid;
DWORD BytesRequired = 200;
NTSTATUS status;
//
// Allocate space for the user info
//
pUser = (PTOKEN_USER)LocalAlloc(LMEM_FIXED, BytesRequired);
if (pUser == NULL) {
DebugMsg((DM_WARNING, TEXT("GetUserSid: Failed to allocate %d bytes"),
BytesRequired));
return NULL;
}
//
// Read in the UserInfo
//
status = NtQueryInformationToken(
UserToken, // Handle
TokenUser, // TokenInformationClass
pUser, // TokenInformation
BytesRequired, // TokenInformationLength
&BytesRequired // ReturnLength
);
if (status == STATUS_BUFFER_TOO_SMALL) {
//
// Allocate a bigger buffer and try again.
//
pUser = LocalReAlloc(pUser, BytesRequired, LMEM_MOVEABLE);
if (pUser == NULL) {
DebugMsg((DM_WARNING, TEXT("GetUserSid: Failed to allocate %d bytes"),
BytesRequired));
return NULL;
}
status = NtQueryInformationToken(
UserToken, // Handle
TokenUser, // TokenInformationClass
pUser, // TokenInformation
BytesRequired, // TokenInformationLength
&BytesRequired // ReturnLength
);
}
if (!NT_SUCCESS(status)) {
DebugMsg((DM_WARNING, TEXT("GetUserSid: Failed to query user info from user token, status = 0x%x"),
status));
LocalFree(pUser);
return NULL;
}
BytesRequired = RtlLengthSid(pUser->User.Sid);
pSid = LocalAlloc(LMEM_FIXED, BytesRequired);
if (pSid == NULL) {
DebugMsg((DM_WARNING, TEXT("GetUserSid: Failed to allocate %d bytes"),
BytesRequired));
LocalFree(pUser);
return NULL;
}
status = RtlCopySid(BytesRequired, pSid, pUser->User.Sid);
LocalFree(pUser);
if (!NT_SUCCESS(status)) {
DebugMsg((DM_WARNING, TEXT("GetUserSid: RtlCopySid Failed. status = %d"),
status));
LocalFree(pSid);
pSid = NULL;
}
return pSid;
}
/***************************************************************************\
* DeleteUserSid
*
* Deletes a user sid previously returned by GetUserSid()
*
* Returns nothing.
*
* History:
* 26-Aug-92 Davidc Created
*
\***************************************************************************/
VOID DeleteUserSid(PSID Sid)
{
LocalFree(Sid);
}
|
