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
|
/*
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 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 winsdb module
*
* Description: verify winsdb records before they're written to disk
*
* Author: Stefan Metzmacher
*/
#include "includes.h"
#include "lib/events/events.h"
#include "nbt_server/nbt_server.h"
#include "nbt_server/wins/winsdb.h"
#include <ldb_module.h>
#include "system/network.h"
#include "lib/socket/netif.h"
#include "param/param.h"
static int wins_ldb_verify(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct winsdb_handle *h = talloc_get_type(ldb_get_opaque(ldb, "winsdb_handle"),
struct winsdb_handle);
const struct ldb_message *msg;
switch (req->operation) {
case LDB_ADD:
msg = req->op.add.message;
break;
case LDB_MODIFY:
msg = req->op.mod.message;
break;
default:
return ldb_next_request(module, req);
}
/* do not manipulate our control entries */
if (ldb_dn_is_special(msg->dn)) {
return ldb_next_request(module, req);
}
if (!h) {
ldb_debug_set(ldb, LDB_DEBUG_FATAL, "%s", "WINS_LDB: INTERNAL ERROR: no winsdb_handle present!");
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:
ldb_debug(ldb, LDB_DEBUG_WARNING, "%s\n", "WINS_LDB: TODO verify add/modify for WINSDB_HANDLE_CALLER_ADMIN");
return ldb_next_request(module, req);
}
return LDB_ERR_OTHER;
}
static int wins_ldb_init(struct ldb_module *module)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
struct winsdb_handle *h;
const char *owner;
struct loadparm_context *lp_ctx = ldb_get_opaque(ldb, "loadparm");
ldb_module_set_private(module, NULL);
owner = lpcfg_parm_string(lp_ctx, NULL, "winsdb", "local_owner");
if (!owner) {
struct interface *ifaces;
load_interface_list(module, lp_ctx, &ifaces);
owner = iface_list_first_v4(ifaces);
if (!owner) {
owner = "0.0.0.0";
}
}
h = talloc_zero(module, struct winsdb_handle);
if (!h) goto failed;
h->ldb = ldb;
h->caller = WINSDB_HANDLE_CALLER_ADMIN;
h->local_owner = talloc_strdup(h, owner);
if (!h->local_owner) goto failed;
return ldb_set_opaque(ldb, "winsdb_handle", h);
failed:
talloc_free(h);
return LDB_ERR_OTHER;
}
static const struct ldb_module_ops ldb_wins_ldb_module_ops = {
.name = "wins_ldb",
.add = wins_ldb_verify,
.modify = wins_ldb_verify,
.init_context = wins_ldb_init
};
int ldb_wins_ldb_module_init(const char *version)
{
LDB_MODULE_CHECK_VERSION(version);
return ldb_register_module(&ldb_wins_ldb_module_ops);
}
|
