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
|
/*
Unix SMB/CIFS implementation.
security descriptror utility functions
Copyright (C) Andrew Tridgell 2004
Copyright (C) Stefan Metzmacher 2005
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "dsdb/samdb/samdb.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/ndr_security.h"
/*
return a blank security token
*/
struct security_token *security_token_initialise(TALLOC_CTX *mem_ctx)
{
struct security_token *st;
st = talloc(mem_ctx, struct security_token);
if (!st) {
return NULL;
}
st->user_sid = NULL;
st->group_sid = NULL;
st->num_sids = 0;
st->sids = NULL;
st->privilege_mask = 0;
return st;
}
/****************************************************************************
Create the SID list for this user.
****************************************************************************/
NTSTATUS security_token_create(TALLOC_CTX *mem_ctx,
struct dom_sid *user_sid,
struct dom_sid *group_sid,
int n_groupSIDs,
struct dom_sid **groupSIDs,
BOOL is_authenticated,
struct security_token **token)
{
struct security_token *ptoken;
int i;
NTSTATUS status;
ptoken = security_token_initialise(mem_ctx);
NT_STATUS_HAVE_NO_MEMORY(ptoken);
ptoken->sids = talloc_array(ptoken, struct dom_sid *, n_groupSIDs + 5);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids);
ptoken->user_sid = talloc_reference(ptoken, user_sid);
ptoken->group_sid = talloc_reference(ptoken, group_sid);
ptoken->privilege_mask = 0;
ptoken->sids[0] = ptoken->user_sid;
ptoken->sids[1] = ptoken->group_sid;
/*
* Finally add the "standard" SIDs.
* The only difference between guest and "anonymous"
* is the addition of Authenticated_Users.
*/
ptoken->sids[2] = dom_sid_parse_talloc(ptoken->sids, SID_WORLD);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[2]);
ptoken->sids[3] = dom_sid_parse_talloc(ptoken->sids, SID_NT_NETWORK);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[3]);
ptoken->num_sids = 4;
if (is_authenticated) {
ptoken->sids[4] = dom_sid_parse_talloc(ptoken->sids, SID_NT_AUTHENTICATED_USERS);
NT_STATUS_HAVE_NO_MEMORY(ptoken->sids[4]);
ptoken->num_sids++;
}
for (i = 0; i < n_groupSIDs; i++) {
size_t check_sid_idx;
for (check_sid_idx = 1;
check_sid_idx < ptoken->num_sids;
check_sid_idx++) {
if (dom_sid_equal(ptoken->sids[check_sid_idx], groupSIDs[i])) {
break;
}
}
if (check_sid_idx == ptoken->num_sids) {
ptoken->sids[ptoken->num_sids++] = talloc_reference(ptoken->sids, groupSIDs[i]);
}
}
/* setup the privilege mask for this token */
status = samdb_privilege_setup(ptoken);
if (!NT_STATUS_IS_OK(status)) {
talloc_free(ptoken);
return status;
}
security_token_debug(10, ptoken);
*token = ptoken;
return NT_STATUS_OK;
}
/****************************************************************************
prints a struct security_token to debug output.
****************************************************************************/
void security_token_debug(int dbg_lev, const struct security_token *token)
{
TALLOC_CTX *mem_ctx;
int i;
if (!token) {
DEBUG(dbg_lev, ("Security token: (NULL)\n"));
return;
}
mem_ctx = talloc_init("security_token_debug()");
if (!mem_ctx) {
return;
}
DEBUG(dbg_lev, ("Security token of user %s\n",
dom_sid_string(mem_ctx, token->user_sid) ));
DEBUGADD(dbg_lev, (" SIDs (%lu):\n",
(unsigned long)token->num_sids));
for (i = 0; i < token->num_sids; i++) {
DEBUGADD(dbg_lev, (" SID[%3lu]: %s\n", (unsigned long)i,
dom_sid_string(mem_ctx, token->sids[i])));
}
security_token_debug_privileges(dbg_lev, token);
talloc_free(mem_ctx);
}
/* These really should be cheaper... */
BOOL security_token_is_sid(const struct security_token *token, const struct dom_sid *sid)
{
if (dom_sid_equal(token->user_sid, sid)) {
return True;
}
return False;
}
BOOL security_token_is_sid_string(const struct security_token *token, const char *sid_string)
{
BOOL ret;
struct dom_sid *sid = dom_sid_parse_talloc(NULL, sid_string);
if (!sid) return False;
ret = security_token_is_sid(token, sid);
talloc_free(sid);
return ret;
}
BOOL security_token_is_system(const struct security_token *token)
{
return security_token_is_sid_string(token, SID_NT_SYSTEM);
}
BOOL security_token_is_anonymous(const struct security_token *token)
{
return security_token_is_sid_string(token, SID_NT_ANONYMOUS);
}
BOOL security_token_has_sid(const struct security_token *token, const struct dom_sid *sid)
{
int i;
for (i = 0; i < token->num_sids; i++) {
if (dom_sid_equal(token->sids[i], sid)) {
return True;
}
}
return False;
}
BOOL security_token_has_sid_string(const struct security_token *token, const char *sid_string)
{
BOOL ret;
struct dom_sid *sid = dom_sid_parse_talloc(NULL, sid_string);
if (!sid) return False;
ret = security_token_has_sid(token, sid);
talloc_free(sid);
return ret;
}
BOOL security_token_has_builtin_administrators(const struct security_token *token)
{
return security_token_has_sid_string(token, SID_BUILTIN_ADMINISTRATORS);
}
BOOL security_token_has_nt_authenticated_users(const struct security_token *token)
{
return security_token_has_sid_string(token, SID_NT_AUTHENTICATED_USERS);
}
|
