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
|
/*
Unix SMB/CIFS implementation.
service (connection) handling
Copyright (C) Andrew Tridgell 1992-2003
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 "smb_server/smb_server.h"
#include "smbd/service_stream.h"
#include "ntvfs/ntvfs.h"
#include "param/share.h"
#include "param/param.h"
/****************************************************************************
Make a connection, given the snum to connect to, and the vuser of the
connecting user if appropriate.
****************************************************************************/
static NTSTATUS make_connection_scfg(struct smbsrv_request *req,
struct share_config *scfg,
enum ntvfs_type type,
DATA_BLOB password,
const char *dev)
{
struct smbsrv_tcon *tcon;
NTSTATUS status;
uint64_t ntvfs_caps = 0;
tcon = smbsrv_smb_tcon_new(req->smb_conn, scfg->name);
if (!tcon) {
DEBUG(0,("Couldn't find free connection.\n"));
return NT_STATUS_INSUFFICIENT_RESOURCES;
}
req->tcon = tcon;
if (req->smb_conn->negotiate.client_caps & CAP_LEVEL_II_OPLOCKS) {
ntvfs_caps |= NTVFS_CLIENT_CAP_LEVEL_II_OPLOCKS;
}
/* init ntvfs function pointers */
status = ntvfs_init_connection(tcon, scfg, type,
req->smb_conn->negotiate.protocol,
ntvfs_caps,
req->smb_conn->connection->event.ctx,
req->smb_conn->connection->msg_ctx,
req->smb_conn->lp_ctx,
req->smb_conn->connection->server_id,
&tcon->ntvfs);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0, ("make_connection_scfg: connection failed for service %s\n",
scfg->name));
goto failed;
}
status = ntvfs_set_oplock_handler(tcon->ntvfs, smbsrv_send_oplock_break, tcon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the oplock handler!\n"));
goto failed;
}
status = ntvfs_set_addr_callbacks(tcon->ntvfs, smbsrv_get_my_addr, smbsrv_get_peer_addr, req->smb_conn);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the addr callbacks!\n"));
goto failed;
}
status = ntvfs_set_handle_callbacks(tcon->ntvfs,
smbsrv_handle_create_new,
smbsrv_handle_make_valid,
smbsrv_handle_destroy,
smbsrv_handle_search_by_wire_key,
smbsrv_handle_get_wire_key,
tcon);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS failed to set the handle callbacks!\n"));
goto failed;
}
req->ntvfs = ntvfs_request_create(req->tcon->ntvfs, req,
req->session->session_info,
SVAL(req->in.hdr,HDR_PID),
req->request_time,
req, NULL, 0);
if (!req->ntvfs) {
status = NT_STATUS_NO_MEMORY;
goto failed;
}
/* Invoke NTVFS connection hook */
status = ntvfs_connect(req->ntvfs, scfg->name);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: NTVFS make connection failed!\n"));
goto failed;
}
return NT_STATUS_OK;
failed:
req->tcon = NULL;
talloc_free(tcon);
return status;
}
/****************************************************************************
Make a connection to a service.
*
* @param service
****************************************************************************/
static NTSTATUS make_connection(struct smbsrv_request *req,
const char *service, DATA_BLOB password,
const char *dev)
{
NTSTATUS status;
enum ntvfs_type type;
const char *type_str;
struct share_config *scfg;
const char *sharetype;
/* the service might be of the form \\SERVER\SHARE. Should we put
the server name we get from this somewhere? */
if (strncmp(service, "\\\\", 2) == 0) {
char *p = strchr(service+2, '\\');
if (p) {
service = p + 1;
}
}
status = share_get_config(req, req->smb_conn->share_context, service, &scfg);
if (!NT_STATUS_IS_OK(status)) {
DEBUG(0,("make_connection: couldn't find service %s\n", service));
return NT_STATUS_BAD_NETWORK_NAME;
}
/* TODO: check the password, when it's share level security! */
if (!socket_check_access(req->smb_conn->connection->socket,
scfg->name,
share_string_list_option(req, scfg, SHARE_HOSTS_ALLOW),
share_string_list_option(req, scfg, SHARE_HOSTS_DENY))) {
return NT_STATUS_ACCESS_DENIED;
}
/* work out what sort of connection this is */
sharetype = share_string_option(scfg, "type", "DISK");
if (sharetype && strcmp(sharetype, "IPC") == 0) {
type = NTVFS_IPC;
type_str = "IPC";
} else if (sharetype && strcmp(sharetype, "PRINTER") == 0) {
type = NTVFS_PRINT;
type_str = "LPT:";
} else {
type = NTVFS_DISK;
type_str = "A:";
}
if (strcmp(dev, "?????") != 0 && strcasecmp(type_str, dev) != 0) {
/* the client gave us the wrong device type */
return NT_STATUS_BAD_DEVICE_TYPE;
}
return make_connection_scfg(req, scfg, type, password, dev);
}
/*
backend for tree connect call
*/
NTSTATUS smbsrv_tcon_backend(struct smbsrv_request *req, union smb_tcon *con)
{
NTSTATUS status;
if (con->generic.level == RAW_TCON_TCON) {
DATA_BLOB password;
password = data_blob_string_const(con->tcon.in.password);
status = make_connection(req, con->tcon.in.service, password, con->tcon.in.dev);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
con->tcon.out.max_xmit = req->smb_conn->negotiate.max_recv;
con->tcon.out.tid = req->tcon->tid;
return status;
}
/* TODO: take a look at tconx.in.flags! */
status = make_connection(req, con->tconx.in.path, con->tconx.in.password,
con->tconx.in.device);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
con->tconx.out.tid = req->tcon->tid;
con->tconx.out.dev_type = talloc_strdup(req, req->tcon->ntvfs->dev_type);
con->tconx.out.fs_type = talloc_strdup(req, req->tcon->ntvfs->fs_type);
con->tconx.out.options = SMB_SUPPORT_SEARCH_BITS | (share_int_option(req->tcon->ntvfs->config, SHARE_CSC_POLICY, SHARE_CSC_POLICY_DEFAULT) << 2);
if (share_bool_option(req->tcon->ntvfs->config, SHARE_MSDFS_ROOT, SHARE_MSDFS_ROOT_DEFAULT) && lp_host_msdfs(req->smb_conn->lp_ctx)) {
con->tconx.out.options |= SMB_SHARE_IN_DFS;
}
return status;
}
|
