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
|
/*
* VFS module to retrieve DFS referrals from AD
*
* Copyright (C) 2007, Stefan Metzmacher
*
* 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 "smbd/smbd.h"
#include "smbd/globals.h"
#include "system/filesys.h"
#include "source3/include/msdfs.h"
#include "librpc/gen_ndr/ndr_dfsblobs.h"
#include "source4/lib/events/events.h"
#include "source4/auth/session.h"
#include "lib/param/param.h"
#include "source4/dsdb/samdb/samdb.h"
#include "dfs_server/dfs_server_ad.h"
static int vfs_dfs_samba4_debug_level = DBGC_VFS;
#undef DBGC_CLASS
#define DBGC_CLASS vfs_dfs_samba4_debug_level
struct dfs_samba4_handle_data {
struct tevent_context *ev;
struct loadparm_context *lp_ctx;
struct ldb_context *sam_ctx;
};
static int dfs_samba4_connect(struct vfs_handle_struct *handle,
const char *service, const char *user)
{
struct dfs_samba4_handle_data *data;
int ret = SMB_VFS_NEXT_CONNECT(handle, service, user);
if (ret < 0) {
return ret;
}
data = talloc_zero(handle->conn, struct dfs_samba4_handle_data);
if (!data) {
DEBUG(0, ("talloc_zero() failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->ev = s4_event_context_init(data);
if (!data->ev) {
DEBUG(0, ("s4_event_context_init failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->lp_ctx = loadparm_init_s3(data, loadparm_s3_helpers());
if (data->lp_ctx == NULL) {
DEBUG(0, ("loadparm_init_s3 failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
data->sam_ctx = samdb_connect(data,
data->ev,
data->lp_ctx,
system_session(data->lp_ctx),
NULL,
0);
if (!data->sam_ctx) {
DEBUG(0, ("samdb_connect failed\n"));
SMB_VFS_NEXT_DISCONNECT(handle);
return -1;
}
SMB_VFS_HANDLE_SET_DATA(handle, data, NULL,
struct dfs_samba4_handle_data,
return -1);
DEBUG(10,("dfs_samba4: connect to service[%s]\n",
service));
return 0;
}
static void dfs_samba4_disconnect(struct vfs_handle_struct *handle)
{
const struct loadparm_substitution *lp_sub =
loadparm_s3_global_substitution();
DEBUG(10,("dfs_samba4_disconnect() connect to service[%s].\n",
lp_servicename(talloc_tos(), lp_sub, SNUM(handle->conn))));
SMB_VFS_NEXT_DISCONNECT(handle);
}
static NTSTATUS dfs_samba4_get_referrals(struct vfs_handle_struct *handle,
struct dfs_GetDFSReferral *r)
{
struct dfs_samba4_handle_data *data;
NTSTATUS status;
SMB_VFS_HANDLE_GET_DATA(handle, data,
struct dfs_samba4_handle_data,
return NT_STATUS_INTERNAL_ERROR);
DEBUG(8, ("dfs_samba4: Requested DFS name: %s utf16-length: %u\n",
r->in.req.servername,
(unsigned int)strlen_m(r->in.req.servername)*2));
status = dfs_server_ad_get_referrals(data->lp_ctx,
data->sam_ctx,
handle->conn->sconn->remote_address,
r);
if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
return SMB_VFS_NEXT_GET_DFS_REFERRALS(handle, r);
}
if (!NT_STATUS_IS_OK(status)) {
return status;
}
return NT_STATUS_OK;
}
static struct vfs_fn_pointers vfs_dfs_samba4_fns = {
.connect_fn = dfs_samba4_connect,
.disconnect_fn = dfs_samba4_disconnect,
.get_dfs_referrals_fn = dfs_samba4_get_referrals,
};
static_decl_vfs;
NTSTATUS vfs_dfs_samba4_init(TALLOC_CTX *ctx)
{
NTSTATUS ret;
ret = smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "dfs_samba4",
&vfs_dfs_samba4_fns);
if (!NT_STATUS_IS_OK(ret)) {
return ret;
}
vfs_dfs_samba4_debug_level = debug_add_class("dfs_samba4");
if (vfs_dfs_samba4_debug_level == -1) {
vfs_dfs_samba4_debug_level = DBGC_VFS;
DEBUG(0, ("vfs_dfs_samba4: Couldn't register custom debugging class!\n"));
} else {
DEBUG(10, ("vfs_dfs_samba4: Debug class number of 'fileid': %d\n",
vfs_dfs_samba4_debug_level));
}
return ret;
}
|
