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
|
/*
* idmap_rid: static map between Active Directory/NT RIDs and RFC 2307 accounts
* Copyright (C) Guenther Deschner, 2004
* Copyright (C) Sumit Bose, 2004
*
* 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"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
struct idmap_rid_context {
const char *domain_name;
uint32_t low_id;
uint32_t high_id;
uint32_t base_rid;
};
/******************************************************************************
compat params can't be used because of the completely different way
we support multiple domains in the new idmap
*****************************************************************************/
static NTSTATUS idmap_rid_initialize(struct idmap_domain *dom,
const char *params)
{
NTSTATUS ret;
struct idmap_rid_context *ctx;
char *config_option = NULL;
const char *range;
uid_t low_uid = 0;
uid_t high_uid = 0;
gid_t low_gid = 0;
gid_t high_gid = 0;
ctx = TALLOC_ZERO_P(dom, struct idmap_rid_context);
if (ctx == NULL) {
DEBUG(0, ("Out of memory!\n"));
return NT_STATUS_NO_MEMORY;
}
config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
if ( ! config_option) {
DEBUG(0, ("Out of memory!\n"));
ret = NT_STATUS_NO_MEMORY;
goto failed;
}
range = lp_parm_const_string(-1, config_option, "range", NULL);
if ( !range ||
(sscanf(range, "%u - %u", &ctx->low_id, &ctx->high_id) != 2) ||
(ctx->low_id > ctx->high_id))
{
ctx->low_id = 0;
ctx->high_id = 0;
}
/* lets see if the range is defined by the old idmap uid/idmap gid */
if (!ctx->low_id && !ctx->high_id) {
if (lp_idmap_uid(&low_uid, &high_uid)) {
ctx->low_id = low_uid;
ctx->high_id = high_uid;
}
if (lp_idmap_gid(&low_gid, &high_gid)) {
if ((ctx->low_id != low_gid) ||
(ctx->high_id != high_uid)) {
DEBUG(1, ("ERROR: idmap uid range must match idmap gid range\n"));
ret = NT_STATUS_UNSUCCESSFUL;
goto failed;
}
}
}
if (!ctx->low_id || !ctx->high_id) {
DEBUG(1, ("ERROR: Invalid configuration, ID range missing or invalid\n"));
ret = NT_STATUS_UNSUCCESSFUL;
goto failed;
}
ctx->base_rid = lp_parm_int(-1, config_option, "base_rid", 0);
ctx->domain_name = talloc_strdup( ctx, dom->name );
dom->private_data = ctx;
talloc_free(config_option);
return NT_STATUS_OK;
failed:
talloc_free(ctx);
return ret;
}
static NTSTATUS idmap_rid_id_to_sid(struct idmap_rid_context *ctx, struct id_map *map)
{
struct winbindd_domain *domain;
/* apply filters before checking */
if ((map->xid.id < ctx->low_id) || (map->xid.id > ctx->high_id)) {
DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
map->xid.id, ctx->low_id, ctx->high_id));
return NT_STATUS_NONE_MAPPED;
}
if ( (domain = find_domain_from_name_noinit(ctx->domain_name)) == NULL ) {
return NT_STATUS_NO_SUCH_DOMAIN;
}
sid_compose(map->sid, &domain->sid, map->xid.id - ctx->low_id + ctx->base_rid);
/* We **really** should have some way of validating
the SID exists and is the correct type here. But
that is a deficiency in the idmap_rid design. */
map->status = ID_MAPPED;
return NT_STATUS_OK;
}
/**********************************
Single sid to id lookup function.
**********************************/
static NTSTATUS idmap_rid_sid_to_id(struct idmap_rid_context *ctx, struct id_map *map)
{
uint32_t rid;
sid_peek_rid(map->sid, &rid);
map->xid.id = rid - ctx->base_rid + ctx->low_id;
/* apply filters before returning result */
if ((map->xid.id < ctx->low_id) || (map->xid.id > ctx->high_id)) {
DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
map->xid.id, ctx->low_id, ctx->high_id));
map->status = ID_UNMAPPED;
return NT_STATUS_NONE_MAPPED;
}
/* We **really** should have some way of validating
the SID exists and is the correct type here. But
that is a deficiency in the idmap_rid design. */
map->status = ID_MAPPED;
return NT_STATUS_OK;
}
/**********************************
lookup a set of unix ids.
**********************************/
static NTSTATUS idmap_rid_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
{
struct idmap_rid_context *ridctx;
NTSTATUS ret;
int i;
/* initialize the status to avoid suprise */
for (i = 0; ids[i]; i++) {
ids[i]->status = ID_UNKNOWN;
}
ridctx = talloc_get_type(dom->private_data, struct idmap_rid_context);
for (i = 0; ids[i]; i++) {
ret = idmap_rid_id_to_sid(ridctx, ids[i]);
if (( ! NT_STATUS_IS_OK(ret)) &&
( ! NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
/* some fatal error occurred, log it */
DEBUG(3, ("Unexpected error resolving an ID (%d)\n", ids[i]->xid.id));
}
}
return NT_STATUS_OK;
}
/**********************************
lookup a set of sids.
**********************************/
static NTSTATUS idmap_rid_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
{
struct idmap_rid_context *ridctx;
TALLOC_CTX *ctx;
NTSTATUS ret;
int i;
/* initialize the status to avoid suprise */
for (i = 0; ids[i]; i++) {
ids[i]->status = ID_UNKNOWN;
}
ridctx = talloc_get_type(dom->private_data, struct idmap_rid_context);
ctx = talloc_new(dom);
if ( ! ctx) {
DEBUG(0, ("Out of memory!\n"));
return NT_STATUS_NO_MEMORY;
}
for (i = 0; ids[i]; i++) {
ret = idmap_rid_sid_to_id(ridctx, ids[i]);
if (( ! NT_STATUS_IS_OK(ret)) &&
( ! NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED))) {
/* some fatal error occurred, log it */
DEBUG(3, ("Unexpected error resolving a SID (%s)\n",
sid_string_dbg(ids[i]->sid)));
}
}
talloc_free(ctx);
return NT_STATUS_OK;
}
static NTSTATUS idmap_rid_close(struct idmap_domain *dom)
{
if (dom->private_data) {
TALLOC_FREE(dom->private_data);
}
return NT_STATUS_OK;
}
static struct idmap_methods rid_methods = {
.init = idmap_rid_initialize,
.unixids_to_sids = idmap_rid_unixids_to_sids,
.sids_to_unixids = idmap_rid_sids_to_unixids,
.close_fn = idmap_rid_close
};
NTSTATUS idmap_rid_init(void)
{
return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "rid", &rid_methods);
}
|
