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
|
/*
ldb database library
Copyright (C) Simo Sorce 2004-2008
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
Copyright (C) Andrew Tridgell 2005
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
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/>.
*/
/*
* Name: ldb
*
* Component: ldb new partition module
*
* Description: Handle the add of new partitions
*
* Author: Andrew Bartlett
*/
#include "includes.h"
#include "ldb.h"
#include "ldb_module.h"
#include "librpc/gen_ndr/ndr_misc.h"
#include "dsdb/samdb/samdb.h"
#include "../libds/common/flags.h"
#include "dsdb/common/util.h"
struct np_context {
struct ldb_module *module;
struct ldb_request *req;
struct ldb_request *search_req;
struct ldb_request *part_add;
};
static int np_part_mod_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct np_context *ac;
ac = talloc_get_type(req->context, struct np_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
/* We just want to update the @PARTITIONS record if the value does not exist */
if (ares->error != LDB_SUCCESS && ares->error != LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
if (ares->type != LDB_REPLY_DONE) {
ldb_set_errstring(ldb, "Invalid reply type!");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ldb_reset_err_string(ldb);
/* Do the original add */
return ldb_next_request(ac->module, ac->req);
}
static int np_part_search_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct ldb_context *ldb;
struct np_context *ac;
struct dsdb_create_partition_exop *ex_op;
int ret;
ac = talloc_get_type(req->context, struct np_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
/* If this already exists, we really don't want to create a
* partition - it would allow a duplicate entry to be
* created */
if (ares->error != LDB_ERR_NO_SUCH_OBJECT) {
if (ares->error == LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, LDB_ERR_ENTRY_ALREADY_EXISTS);
} else {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
}
if (ares->type != LDB_REPLY_DONE) {
ldb_set_errstring(ldb, "Invalid reply type - we must not get a result here!");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ldb_reset_err_string(ldb);
/* Now that we know it does not exist, we can try and create the partition */
ex_op = talloc(ac, struct dsdb_create_partition_exop);
if (ex_op == NULL) {
return ldb_oom(ldb);
}
ex_op->new_dn = ac->req->op.add.message->dn;
ret = ldb_build_extended_req(&ac->part_add,
ldb, ac, DSDB_EXTENDED_CREATE_PARTITION_OID, ex_op,
NULL, ac, np_part_mod_callback, req);
/* if the parent was asking for a partial replica, then we
* need the extended operation to also ask for a partial
* replica */
if (ldb_request_get_control(req, DSDB_CONTROL_PARTIAL_REPLICA)) {
ret = dsdb_request_add_controls(ac->part_add, DSDB_MODIFY_PARTIAL_REPLICA);
if (ret != LDB_SUCCESS) {
return ret;
}
}
LDB_REQ_SET_LOCATION(ac->part_add);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(ac->module, ac->part_add);
}
/* add_record: add instancetype attribute */
static int new_partition_add(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct np_context *ac;
int ret;
ldb = ldb_module_get_ctx(module);
ldb_debug(ldb, LDB_DEBUG_TRACE, "new_partition_add\n");
/* do not manipulate our control entries */
if (ldb_dn_is_special(req->op.add.message->dn)) {
return ldb_next_request(module, req);
}
if (ldb_msg_find_element(req->op.add.message, "instanceType")) {
/* This needs to be 'static' to ensure it does not move, and is not on the stack */
static const char *no_attrs[] = { NULL };
uint32_t instanceType = ldb_msg_find_attr_as_uint(req->op.add.message, "instanceType", 0);
if (!(instanceType & INSTANCE_TYPE_IS_NC_HEAD)) {
return ldb_next_request(module, req);
}
if (ldb_msg_find_attr_as_bool(req->op.add.message, "isDeleted", false)) {
DEBUG(0,(__location__ ": Skipping deleted partition %s\n",
ldb_dn_get_linearized(req->op.add.message->dn)));
return ldb_next_request(module, req);
}
/* Create an @PARTITIONS record for this partition -
* by asking the partitions module to do so via an
* extended operation, after first checking if the
* record already exists */
ac = talloc(req, struct np_context);
if (ac == NULL) {
return ldb_oom(ldb);
}
ac->module = module;
ac->req = req;
ret = ldb_build_search_req(&ac->search_req, ldb, ac, req->op.add.message->dn,
LDB_SCOPE_BASE, NULL, no_attrs, req->controls, ac,
np_part_search_callback,
req);
LDB_REQ_SET_LOCATION(ac->search_req);
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(module, ac->search_req);
}
/* go on with the call chain */
return ldb_next_request(module, req);
}
static const struct ldb_module_ops ldb_new_partition_module_ops = {
.name = "new_partition",
.add = new_partition_add,
};
int ldb_new_partition_module_init(const char *version)
{
LDB_MODULE_CHECK_VERSION(version);
return ldb_register_module(&ldb_new_partition_module_ops);
}
|
