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
|
/*
Unix SMB/CIFS implementation.
async getgrsid
Copyright (C) Volker Lendecke 2009
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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "winbindd.h"
#include "librpc/gen_ndr/ndr_winbind_c.h"
#include "../libcli/security/security.h"
#include "lib/dbwrap/dbwrap_rbt.h"
struct wb_getgrsid_state {
struct tevent_context *ev;
struct dom_sid sid;
int max_nesting;
const char *domname;
const char *name;
enum lsa_SidType type;
gid_t gid;
struct db_context *members;
};
static void wb_getgrsid_lookupsid_done(struct tevent_req *subreq);
static void wb_getgrsid_sid2gid_done(struct tevent_req *subreq);
static void wb_getgrsid_got_members(struct tevent_req *subreq);
struct tevent_req *wb_getgrsid_send(TALLOC_CTX *mem_ctx,
struct tevent_context *ev,
const struct dom_sid *group_sid,
int max_nesting)
{
struct tevent_req *req, *subreq;
struct wb_getgrsid_state *state;
struct dom_sid_buf buf;
req = tevent_req_create(mem_ctx, &state, struct wb_getgrsid_state);
if (req == NULL) {
return NULL;
}
D_INFO("WB command getgrsid start.\nLooking up group SID %s.\n", dom_sid_str_buf(group_sid, &buf));
sid_copy(&state->sid, group_sid);
state->ev = ev;
state->max_nesting = max_nesting;
if (dom_sid_in_domain(&global_sid_Unix_Groups, group_sid)) {
/* unmapped Unix groups must be resolved locally */
tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
return tevent_req_post(req, ev);
}
subreq = wb_lookupsid_send(state, ev, &state->sid);
if (tevent_req_nomem(subreq, req)) {
return tevent_req_post(req, ev);
}
tevent_req_set_callback(subreq, wb_getgrsid_lookupsid_done, req);
return req;
}
static void wb_getgrsid_lookupsid_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_getgrsid_state *state = tevent_req_data(
req, struct wb_getgrsid_state);
NTSTATUS status;
status = wb_lookupsid_recv(subreq, state, &state->type,
&state->domname, &state->name);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
switch (state->type) {
case SID_NAME_DOM_GRP:
case SID_NAME_ALIAS:
case SID_NAME_WKN_GRP:
/*
* also treat user-type SIDS (they might map to ID_TYPE_BOTH)
*/
case SID_NAME_USER:
case SID_NAME_COMPUTER:
break;
default:
tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
return;
}
subreq = wb_sids2xids_send(state, state->ev, &state->sid, 1);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_getgrsid_sid2gid_done, req);
}
static void wb_getgrsid_sid2gid_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_getgrsid_state *state = tevent_req_data(
req, struct wb_getgrsid_state);
NTSTATUS status;
struct unixid xids[1];
status = wb_sids2xids_recv(subreq, xids, ARRAY_SIZE(xids));
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
/*
* We are filtering further down in sids2xids, but that filtering
* depends on the actual type of the sid handed in (as determined
* by lookupsids). Here we need to filter for the type of object
* actually requested, in this case uid.
*/
if (!(xids[0].type == ID_TYPE_GID || xids[0].type == ID_TYPE_BOTH)) {
tevent_req_nterror(req, NT_STATUS_NONE_MAPPED);
return;
}
state->gid = (gid_t)xids[0].id;
if (state->type == SID_NAME_USER || state->type == SID_NAME_COMPUTER) {
/*
* special treatment for a user sid that is
* mapped to ID_TYPE_BOTH:
* create a group with the sid/xid as only member
*/
const char *name;
if (xids[0].type != ID_TYPE_BOTH) {
tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
return;
}
state->members = db_open_rbt(state);
if (tevent_req_nomem(state->members, req)) {
return;
}
name = fill_domain_username_talloc(talloc_tos(),
state->domname,
state->name,
true /* can_assume */);
if (tevent_req_nomem(name, req)) {
return;
}
status = add_member_to_db(state->members, &state->sid, name);
if (!NT_STATUS_IS_OK(status)) {
tevent_req_nterror(req, status);
return;
}
tevent_req_done(req);
return;
}
/*
* the "regular" case of a group type sid.
*/
subreq = wb_group_members_send(state, state->ev, &state->sid,
state->type, state->max_nesting);
if (tevent_req_nomem(subreq, req)) {
return;
}
tevent_req_set_callback(subreq, wb_getgrsid_got_members, req);
}
static void wb_getgrsid_got_members(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(
subreq, struct tevent_req);
struct wb_getgrsid_state *state = tevent_req_data(
req, struct wb_getgrsid_state);
NTSTATUS status;
status = wb_group_members_recv(subreq, state, &state->members);
TALLOC_FREE(subreq);
if (tevent_req_nterror(req, status)) {
return;
}
tevent_req_done(req);
}
NTSTATUS wb_getgrsid_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
const char **domname, const char **name, gid_t *gid,
struct db_context **members)
{
struct wb_getgrsid_state *state = tevent_req_data(
req, struct wb_getgrsid_state);
NTSTATUS status;
D_INFO("WB command getgrsid end.\n");
if (tevent_req_is_nterror(req, &status)) {
D_WARNING("Failed with %s.\n", nt_errstr(status));
return status;
}
*domname = talloc_move(mem_ctx, &state->domname);
*name = talloc_move(mem_ctx, &state->name);
*gid = state->gid;
*members = talloc_move(mem_ctx, &state->members);
return NT_STATUS_OK;
}
|
