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
|
/*
ldb database module
Copyright (C) Stefan Metzmacher 2006
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.
*/
/*
* Name: ldb
*
* Component: ldb winsdb module
*
* Description: verify winsdb records before they're written to disk
*
* Author: Stefan Metzmacher
*/
#include "includes.h"
#include "nbt_server/nbt_server.h"
#include "nbt_server/wins/winsdb.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "lib/ldb/include/ldb_private.h"
/* add_record: do things with the sambaPassword attribute */
static int wins_ldb_verify(struct ldb_module *module, struct ldb_request *req, const struct ldb_message *msg)
{
struct winsdb_handle *h = talloc_get_type(ldb_get_opaque(module->ldb, "winsdb_handle"),
struct winsdb_handle);
char *error = NULL;
if (!h) {
error = talloc_strdup(module, "WINS_LDB: INTERNAL ERROR: no winsdb_handle present!");
ldb_debug(module->ldb, LDB_DEBUG_FATAL, "%s", error);
ldb_set_errstring(module->ldb, error);
return LDB_ERR_OTHER;
}
switch (h->caller) {
case WINSDB_HANDLE_CALLER_NBTD:
case WINSDB_HANDLE_CALLER_WREPL:
/* we trust our nbt and wrepl code ... */
return ldb_next_request(module, req);
case WINSDB_HANDLE_CALLER_ADMIN:
error = talloc_strdup(module, "WINS_LDB: TODO verify add/modify for WINSDB_HANDLE_CALLER_ADMIN");
ldb_debug(module->ldb, LDB_DEBUG_WARNING, "%s\n", error);
return ldb_next_request(module, req);
}
return LDB_ERR_OTHER;
}
static int wins_ldb_request(struct ldb_module *module, struct ldb_request *req)
{
const struct ldb_message *msg = req->op.mod.message;
switch (req->operation) {
case LDB_REQ_ADD:
msg = req->op.add.message;
break;
case LDB_REQ_MODIFY:
msg = req->op.mod.message;
break;
default:
goto call_next;
}
if (ldb_dn_is_special(msg->dn)) goto call_next;
return wins_ldb_verify(module, req, msg);
call_next:
return ldb_next_request(module, req);
}
static int wins_ldb_init(struct ldb_module *ctx)
{
struct winsdb_handle *h;
const char *owner;
ctx->private_data = NULL;
owner = lp_parm_string(-1, "winsdb", "local_owner");
if (!owner) {
owner = iface_n_ip(0);
if (!owner) {
owner = "0.0.0.0";
}
}
h = talloc(ctx, struct winsdb_handle);
if (!h) goto failed;
h->ldb = ctx->ldb;
h->caller = WINSDB_HANDLE_CALLER_ADMIN;
h->local_owner = talloc_strdup(h, owner);
if (!h->local_owner) goto failed;
return ldb_set_opaque(ctx->ldb, "winsdb_handle", h);
failed:
talloc_free(h);
return LDB_ERR_OTHER;
}
static const struct ldb_module_ops wins_ldb_ops = {
.name = "wins_ldb",
.request = wins_ldb_request,
.init_context = wins_ldb_init
};
/* the init function */
int wins_ldb_module_init(void)
{
return ldb_register_module(&wins_ldb_ops);
}
|
