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
217
218
219
220
221
|
/*
Unix SMB/CIFS implementation.
Main winbindd server routines
Copyright (C) Stefan Metzmacher 2005
Copyright (C) Andrew Tridgell 2005
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 "lib/socket/socket.h"
#include "lib/util/dlinklist.h"
#include "lib/events/events.h"
#include "smbd/service_task.h"
#include "smbd/process_model.h"
#include "smbd/service_stream.h"
#include "nsswitch/winbind_nss_config.h"
#include "winbind/wb_server.h"
#include "lib/stream/packet.h"
#include "smbd/service.h"
#include "param/secrets.h"
#include "param/param.h"
void wbsrv_terminate_connection(struct wbsrv_connection *wbconn, const char *reason)
{
stream_terminate_connection(wbconn->conn, reason);
}
/*
called on a tcp recv error
*/
static void wbsrv_recv_error(void *private, NTSTATUS status)
{
struct wbsrv_connection *wbconn = talloc_get_type(private, struct wbsrv_connection);
wbsrv_terminate_connection(wbconn, nt_errstr(status));
}
static void wbsrv_accept(struct stream_connection *conn)
{
struct wbsrv_listen_socket *listen_socket = talloc_get_type(conn->private,
struct wbsrv_listen_socket);
struct wbsrv_connection *wbconn;
wbconn = talloc_zero(conn, struct wbsrv_connection);
if (!wbconn) {
stream_terminate_connection(conn, "wbsrv_accept: out of memory");
return;
}
wbconn->conn = conn;
wbconn->listen_socket = listen_socket;
wbconn->lp_ctx = listen_socket->service->task->lp_ctx;
conn->private = wbconn;
wbconn->packet = packet_init(wbconn);
if (wbconn->packet == NULL) {
wbsrv_terminate_connection(wbconn, "wbsrv_accept: out of memory");
return;
}
packet_set_private(wbconn->packet, wbconn);
packet_set_socket(wbconn->packet, conn->socket);
packet_set_callback(wbconn->packet, wbsrv_samba3_process);
packet_set_full_request(wbconn->packet, wbsrv_samba3_packet_full_request);
packet_set_error_handler(wbconn->packet, wbsrv_recv_error);
packet_set_event_context(wbconn->packet, conn->event.ctx);
packet_set_fde(wbconn->packet, conn->event.fde);
packet_set_serialise(wbconn->packet);
}
/*
receive some data on a winbind connection
*/
static void wbsrv_recv(struct stream_connection *conn, uint16_t flags)
{
struct wbsrv_connection *wbconn = talloc_get_type(conn->private,
struct wbsrv_connection);
packet_recv(wbconn->packet);
}
/*
called when we can write to a connection
*/
static void wbsrv_send(struct stream_connection *conn, uint16_t flags)
{
struct wbsrv_connection *wbconn = talloc_get_type(conn->private,
struct wbsrv_connection);
packet_queue_run(wbconn->packet);
}
static const struct stream_server_ops wbsrv_ops = {
.name = "winbind samba3 protocol",
.accept_connection = wbsrv_accept,
.recv_handler = wbsrv_recv,
.send_handler = wbsrv_send
};
/*
startup the winbind task
*/
static void winbind_task_init(struct task_server *task)
{
uint16_t port = 1;
const struct model_ops *model_ops;
NTSTATUS status;
struct wbsrv_service *service;
struct wbsrv_listen_socket *listen_socket;
task_server_set_title(task, "task[winbind]");
/* within the winbind task we want to be a single process, so
ask for the single process model ops and pass these to the
stream_setup_socket() call. */
model_ops = process_model_byname("single");
if (!model_ops) {
task_server_terminate(task,
"Can't find 'single' process model_ops");
return;
}
/* Make sure the directory for the Samba3 socket exists, and is of the correct permissions */
if (!directory_create_or_exist(lp_winbindd_socket_directory(task->lp_ctx), geteuid(), 0755)) {
task_server_terminate(task,
"Cannot create winbindd pipe directory");
return;
}
service = talloc_zero(task, struct wbsrv_service);
if (!service) goto nomem;
service->task = task;
service->primary_sid = secrets_get_domain_sid(service,
task->lp_ctx,
lp_workgroup(task->lp_ctx));
if (service->primary_sid == NULL) {
task_server_terminate(
task, nt_errstr(NT_STATUS_CANT_ACCESS_DOMAIN_INFO));
return;
}
/* setup the unprivileged samba3 socket */
listen_socket = talloc(service, struct wbsrv_listen_socket);
if (!listen_socket) goto nomem;
listen_socket->socket_path = talloc_asprintf(listen_socket, "%s/%s",
lp_winbindd_socket_directory(task->lp_ctx),
WINBINDD_SAMBA3_SOCKET);
if (!listen_socket->socket_path) goto nomem;
listen_socket->service = service;
listen_socket->privileged = false;
status = stream_setup_socket(task->event_ctx, task->lp_ctx, model_ops,
&wbsrv_ops, "unix",
listen_socket->socket_path, &port,
lp_socket_options(task->lp_ctx),
listen_socket);
if (!NT_STATUS_IS_OK(status)) goto listen_failed;
/* setup the privileged samba3 socket */
listen_socket = talloc(service, struct wbsrv_listen_socket);
if (!listen_socket) goto nomem;
listen_socket->socket_path =
smbd_tmp_path(listen_socket, task->lp_ctx,
WINBINDD_SAMBA3_PRIVILEGED_SOCKET);
if (!listen_socket->socket_path) goto nomem;
listen_socket->service = service;
listen_socket->privileged = true;
status = stream_setup_socket(task->event_ctx, task->lp_ctx, model_ops,
&wbsrv_ops, "unix",
listen_socket->socket_path, &port,
lp_socket_options(task->lp_ctx),
listen_socket);
if (!NT_STATUS_IS_OK(status)) goto listen_failed;
status = wbsrv_init_irpc(service);
if (!NT_STATUS_IS_OK(status)) goto irpc_failed;
return;
listen_failed:
DEBUG(0,("stream_setup_socket(path=%s) failed - %s\n",
listen_socket->socket_path, nt_errstr(status)));
task_server_terminate(task, nt_errstr(status));
return;
irpc_failed:
DEBUG(0,("wbsrv_init_irpc() failed - %s\n",
nt_errstr(status)));
task_server_terminate(task, nt_errstr(status));
return;
nomem:
task_server_terminate(task, nt_errstr(NT_STATUS_NO_MEMORY));
return;
}
/*
initialise the winbind server
*/
static NTSTATUS winbind_init(struct event_context *event_ctx,
struct loadparm_context *lp_ctx,
const struct model_ops *model_ops)
{
return task_server_startup(event_ctx, lp_ctx,
model_ops, winbind_task_init);
}
/*
register ourselves as a available server
*/
NTSTATUS server_service_winbind_init(void)
{
return register_server_service("winbind", winbind_init);
}
|
