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
|
/********************************************************/
/* ntapi: Native API core library */
/* Copyright (C) 2013--2017 Z. Gilboa */
/* Released under GPLv2 and GPLv3; see COPYING.NTAPI. */
/********************************************************/
#include <psxtypes/psxtypes.h>
#include <ntapi/nt_status.h>
#include <ntapi/nt_object.h>
#include <ntapi/nt_acl.h>
#include "ntapi_impl.h"
#define __SID_SYSTEM {1,1,{{0,0,0,0,0,5}},{18}}
#define __SID_OWNER_RIGHTS {1,1,{{0,0,0,0,0,3}},{4}}
#define __SID_AUTHENTICATED_USERS {1,1,{{0,0,0,0,0,5}},{11}}
#define __SID_ADMINISTRATORS {1,2,{{0,0,0,0,0,5}},{32,544}}
static const nt_sid sid_system = __SID_SYSTEM;
static const nt_sid sid_owner_rights = __SID_OWNER_RIGHTS;
static const nt_sid sid_auth_users = __SID_AUTHENTICATED_USERS;
static const nt_sid_os sid_admins = __SID_ADMINISTRATORS;
static nt_access_allowed_ace * __acl_ace_init(
nt_access_allowed_ace * ace,
uint32_t mask,
const nt_sid * sid,
uint16_t * aces)
{
if (mask == 0)
return ace;
ace->mask = mask;
ace->header.ace_type = NT_ACE_TYPE_ACCESS_ALLOWED;
ace->header.ace_flags = 0;
ace->header.ace_size = sizeof(uint32_t) * sid->sub_authority_count
+ __offsetof(nt_access_allowed_ace,sid_start)
+ __offsetof(nt_sid,sub_authority);
__ntapi->tt_sid_copy(
(nt_sid *)&ace->sid_start,
sid);
(*aces)++;
return (nt_access_allowed_ace *)((size_t)ace + ace->header.ace_size);
}
void __stdcall __ntapi_acl_init_common_descriptor(
__out nt_sd_common_buffer * sd,
__in const nt_sid * owner,
__in const nt_sid * group,
__in const nt_sid * other,
__in const nt_sid * admin,
__in uint32_t owner_access,
__in uint32_t group_access,
__in uint32_t other_access,
__in uint32_t admin_access,
__in uint32_t system_access)
{
nt_access_allowed_ace * ace;
uint16_t ace_count = 0;
/* sd header */
sd->sd.revision = 1;
sd->sd.sbz_1st = 0;
sd->sd.control = NT_SE_SELF_RELATIVE | NT_SE_DACL_PRESENT;
sd->sd.offset_owner = __offsetof(nt_sd_common_buffer,owner);
sd->sd.offset_group = 0;
sd->sd.offset_dacl = __offsetof(nt_sd_common_buffer,dacl);
sd->sd.offset_sacl = 0;
/* owner, group, other: default sid's */
owner = owner ? owner : __ntapi_internals()->user;
group = group ? group : owner;
other = other ? other : &sid_auth_users;
/* owner sid */
__ntapi->tt_sid_copy(
(nt_sid *)&sd->owner,
owner);
/* ace's */
ace = (nt_access_allowed_ace *)&sd->buffer;
ace = __acl_ace_init(ace,system_access,&sid_system,&ace_count);
ace = __acl_ace_init(ace,owner_access,&sid_owner_rights,&ace_count);
ace = __acl_ace_init(ace,group_access,group,&ace_count);
ace = __acl_ace_init(ace,other_access,other,&ace_count);
if (admin_access) {
admin = admin ? admin : (nt_sid *)&sid_admins;
ace = __acl_ace_init(ace,admin_access,admin,&ace_count);
}
/* dacl */
sd->dacl.acl_revision = 0x02;
sd->dacl.sbz_1st = 0;
sd->dacl.acl_size = (uint16_t)((char *)ace - (char *)&sd->dacl);
sd->dacl.ace_count = ace_count;
sd->dacl.sbz_2nd = 0;
}
static int32_t __acl_init_common_meta_impl(
__out nt_sd_common_meta * meta,
__in nt_sd * sd)
{
int i;
nt_sid * sid;
nt_acl * acl;
nt_access_allowed_ace * ace;
unsigned char * value;
unsigned char sacnt;
char * mark = (char *)sd;
meta->sd = sd;
meta->owner = sd->offset_owner ? (nt_sid *)(mark + sd->offset_owner) : 0;
meta->group = 0;
meta->dacl = sd->offset_dacl ? (nt_acl *)(mark + sd->offset_dacl) : 0;
meta->owner_ace = 0;
meta->owner_sid = 0;
meta->group_ace = 0;
meta->group_sid = 0;
meta->other_ace = 0;
meta->other_sid = 0;
meta->admin_ace = 0;
meta->admin_sid = 0;
meta->system_acc = 0;
if (!meta->owner)
return NT_STATUS_INVALID_OWNER;
if (!(acl = meta->dacl))
return NT_STATUS_SUCCESS;
if (acl->ace_count == 0)
return NT_STATUS_SUCCESS;
if (acl->ace_count > 5)
return NT_STATUS_NOT_SUPPORTED;
ace = (nt_access_allowed_ace *)&acl[1];
for (i=0; i<acl->ace_count; i++) {
if (ace->header.ace_type != NT_ACE_TYPE_ACCESS_ALLOWED)
return NT_STATUS_NOT_SUPPORTED;
mark = (char *)ace + ace->header.ace_size;
ace = (nt_access_allowed_ace *)mark;
}
ace = (nt_access_allowed_ace *)&acl[1];
for (i=0; i<acl->ace_count; i++) {
sid = (nt_sid *)&ace->sid_start;
value = sid->identifier_authority.value;
if (!(__ntapi->tt_sid_compare(sid,&sid_system)))
meta->system_acc = ace->mask;
else if (!(__ntapi->tt_sid_compare(sid,&sid_owner_rights))) {
if (meta->owner_ace)
return NT_STATUS_INVALID_ACL;
meta->owner_ace = ace;
meta->owner_sid = sid;
}
else if (!(__ntapi->tt_sid_compare(sid,&sid_auth_users))) {
if (meta->other_ace)
return NT_STATUS_INVALID_ACL;
meta->other_ace = ace;
meta->other_sid = sid;
}
else if (!(__ntapi->tt_sid_compare(sid,meta->owner))) {
if (meta->group_ace)
return NT_STATUS_INVALID_ACL;
meta->group_ace = ace;
meta->group_sid = sid;
}
else if (!(__ntapi->tt_sid_compare(sid,(nt_sid *)&sid_admins))) {
if (meta->admin_ace)
return NT_STATUS_INVALID_ACL;
meta->admin_ace = ace;
meta->admin_sid = sid;
}
else if ((value[0] == 0) && (value[1] == 0)
&& (value[2] == 0) && (value[3] == 0)
&& (value[4] == 0) && (value[5] == 5)
&& (sid->sub_authority[0] == 21)
&& ((sacnt = sid->sub_authority_count))
&& (sid->sub_authority[sacnt - 1] == 500)) {
if (meta->admin_ace)
return NT_STATUS_INVALID_ACL;
meta->admin_ace = ace;
meta->admin_sid = sid;
}
else {
if (meta->group_ace)
return NT_STATUS_INVALID_ACL;
meta->group_ace = ace;
meta->group_sid = sid;
meta->group = sid;
}
mark = (char *)ace + ace->header.ace_size;
ace = (nt_access_allowed_ace *)mark;
}
return NT_STATUS_SUCCESS;
}
static int32_t __acl_init_common_meta_strict(
__out nt_sd_common_meta * meta,
__in nt_sd * sd)
{
int32_t status;
nt_sd_common_meta m;
if ((status = __acl_init_common_meta_impl(&m,sd)))
return status;
meta->sd = m.sd;
meta->owner = m.owner;
meta->group = m.group;
meta->dacl = m.dacl;
meta->owner_ace = m.owner_ace;
meta->owner_sid = m.owner_sid;
meta->group_ace = m.group_ace;
meta->group_sid = m.group_sid;
meta->other_ace = m.other_ace;
meta->other_sid = m.other_sid;
meta->admin_ace = m.admin_ace;
meta->admin_sid = m.admin_sid;
meta->system_acc = 0;
return NT_STATUS_SUCCESS;
}
static int32_t __acl_init_common_meta_query(
__out nt_sd_common_meta * meta,
__in nt_sd * sd)
{
__acl_init_common_meta_impl(meta,sd);
return NT_STATUS_SUCCESS;
}
int32_t __stdcall __ntapi_acl_init_common_descriptor_meta(
__out nt_sd_common_meta * meta,
__in nt_sd * sd,
__in uint32_t options)
{
switch (options) {
case NT_ACL_INIT_COMMON_DESCRIPTION_META_QUERY_MODE:
return __acl_init_common_meta_query(meta,sd);
case NT_ACL_INIT_COMMON_DESCRIPTION_META_STRICT_MODE:
return __acl_init_common_meta_strict(meta,sd);
default:
return NT_STATUS_INVALID_PARAMETER;
}
}
|
