2 Unix SMB/CIFS implementation.
4 SMB2 client transport context management functions
6 Copyright (C) Andrew Tridgell 2005
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "system/network.h"
24 #include "libcli/raw/libcliraw.h"
25 #include "libcli/raw/raw_proto.h"
26 #include "libcli/smb2/smb2.h"
27 #include "libcli/smb2/smb2_calls.h"
28 #include "lib/socket/socket.h"
29 #include "lib/events/events.h"
30 #include "../lib/util/dlinklist.h"
31 #include "../libcli/smb/smbXcli_base.h"
32 #include "librpc/ndr/libndr.h"
37 static int transport_destructor(struct smb2_transport
*transport
)
39 smb2_transport_dead(transport
, NT_STATUS_LOCAL_DISCONNECT
);
44 create a transport structure based on an established socket
46 struct smb2_transport
*smb2_transport_init(struct smbcli_socket
*sock
,
47 TALLOC_CTX
*parent_ctx
,
48 struct smbcli_options
*options
)
50 struct smb2_transport
*transport
;
51 struct GUID client_guid
;
52 uint32_t smb2_capabilities
= 0;
54 transport
= talloc_zero(parent_ctx
, struct smb2_transport
);
55 if (!transport
) return NULL
;
57 transport
->ev
= sock
->event
.ctx
;
58 transport
->options
= *options
;
60 TALLOC_FREE(sock
->event
.fde
);
61 TALLOC_FREE(sock
->event
.te
);
63 client_guid
= GUID_random();
65 /* TODO: hand this in via the options? */
66 smb2_capabilities
= SMB2_CAP_ALL
;
68 transport
->conn
= smbXcli_conn_create(transport
,
72 0, /* smb1_capabilities */
75 if (transport
->conn
== NULL
) {
76 talloc_free(transport
);
82 talloc_set_destructor(transport
, transport_destructor
);
88 mark the transport as dead
90 void smb2_transport_dead(struct smb2_transport
*transport
, NTSTATUS status
)
92 if (NT_STATUS_EQUAL(NT_STATUS_UNSUCCESSFUL
, status
)) {
93 status
= NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
95 if (NT_STATUS_IS_OK(status
)) {
96 status
= NT_STATUS_LOCAL_DISCONNECT
;
99 smbXcli_conn_disconnect(transport
->conn
, status
);
102 static void smb2_request_done(struct tevent_req
*subreq
);
103 static void smb2_transport_break_handler(struct tevent_req
*subreq
);
106 put a request into the send queue
108 void smb2_transport_send(struct smb2_request
*req
)
111 struct smb2_transport
*transport
= req
->transport
;
112 struct tevent_req
**reqs
= transport
->compound
.reqs
;
113 size_t num_reqs
= talloc_array_length(reqs
);
115 uint16_t cmd
= SVAL(req
->out
.hdr
, SMB2_HDR_OPCODE
);
116 uint32_t additional_flags
= IVAL(req
->out
.hdr
, SMB2_HDR_FLAGS
);
117 uint32_t clear_flags
= 0;
118 struct smbXcli_tcon
*tcon
= NULL
;
119 struct smbXcli_session
*session
= NULL
;
120 bool need_pending_break
= false;
123 DATA_BLOB body
= data_blob_null
;
124 DATA_BLOB dyn
= data_blob_null
;
125 uint32_t timeout_msec
= transport
->options
.request_timeout
* 1000;
127 if (transport
->oplock
.handler
) {
128 need_pending_break
= true;
131 if (transport
->lease
.handler
) {
132 need_pending_break
= true;
135 if (transport
->break_subreq
) {
136 need_pending_break
= false;
139 if (need_pending_break
) {
140 struct tevent_req
*subreq
;
142 subreq
= smb2cli_req_create(transport
,
146 0, /* additional_flags */
148 0, /* timeout_msec */
155 if (subreq
!= NULL
) {
156 smbXcli_req_set_pending(subreq
);
157 tevent_req_set_callback(subreq
,
158 smb2_transport_break_handler
,
160 transport
->break_subreq
= subreq
;
165 session
= req
->session
->smbXcli
;
169 tcon
= req
->tree
->smbXcli
;
172 if (transport
->compound
.related
) {
173 additional_flags
|= SMB2_HDR_FLAG_CHAINED
;
176 hdr_ofs
= PTR_DIFF(req
->out
.hdr
, req
->out
.buffer
);
177 pdu_len
= req
->out
.size
- hdr_ofs
;
178 body
.data
= req
->out
.body
;
179 body
.length
= req
->out
.body_fixed
;
180 dyn
.data
= req
->out
.body
+ req
->out
.body_fixed
;
181 dyn
.length
= pdu_len
- (SMB2_HDR_BODY
+ req
->out
.body_fixed
);
183 req
->subreq
= smb2cli_req_create(req
,
192 body
.data
, body
.length
,
193 dyn
.data
, dyn
.length
);
194 if (req
->subreq
== NULL
) {
195 req
->state
= SMB2_REQUEST_ERROR
;
196 req
->status
= NT_STATUS_NO_MEMORY
;
200 if (!tevent_req_is_in_progress(req
->subreq
)) {
201 req
->state
= SMB2_REQUEST_ERROR
;
202 req
->status
= NT_STATUS_INTERNAL_ERROR
;/* TODO */
206 tevent_req_set_callback(req
->subreq
, smb2_request_done
, req
);
208 smb2cli_req_set_notify_async(req
->subreq
);
209 if (req
->credit_charge
) {
210 smb2cli_req_set_credit_charge(req
->subreq
, req
->credit_charge
);
213 ZERO_STRUCT(req
->out
);
214 req
->state
= SMB2_REQUEST_RECV
;
217 for (i
=0; i
< num_reqs
; i
++) {
218 if (reqs
[i
] != NULL
) {
222 reqs
[i
] = req
->subreq
;
234 status
= smb2cli_req_compound_submit(reqs
, num_reqs
);
236 TALLOC_FREE(transport
->compound
.reqs
);
237 transport
->compound
.related
= false;
239 if (!NT_STATUS_IS_OK(status
)) {
240 req
->status
= status
;
241 req
->state
= SMB2_REQUEST_ERROR
;
242 smbXcli_conn_disconnect(transport
->conn
, status
);
246 static void smb2_request_done(struct tevent_req
*subreq
)
248 struct smb2_request
*req
=
249 tevent_req_callback_data(subreq
,
250 struct smb2_request
);
254 req
->recv_iov
= NULL
;
256 req
->status
= smb2cli_req_recv(req
->subreq
, req
, &req
->recv_iov
, NULL
, 0);
257 if (NT_STATUS_EQUAL(req
->status
, STATUS_PENDING
)) {
258 req
->cancel
.can_cancel
= true;
261 TALLOC_FREE(req
->subreq
);
262 if (!NT_STATUS_IS_OK(req
->status
)) {
263 if (req
->recv_iov
== NULL
) {
264 req
->state
= SMB2_REQUEST_ERROR
;
272 len
= req
->recv_iov
[0].iov_len
;
273 for (i
=1; i
< 3; i
++) {
274 uint8_t *p
= req
->recv_iov
[i
-1].iov_base
;
275 uint8_t *c1
= req
->recv_iov
[i
].iov_base
;
276 uint8_t *c2
= p
+ req
->recv_iov
[i
-1].iov_len
;
278 len
+= req
->recv_iov
[i
].iov_len
;
280 if (req
->recv_iov
[i
].iov_len
== 0) {
285 req
->status
= NT_STATUS_INTERNAL_ERROR
;
286 req
->state
= SMB2_REQUEST_ERROR
;
294 req
->in
.buffer
= req
->recv_iov
[0].iov_base
;
296 req
->in
.allocated
= req
->in
.size
;
298 req
->in
.hdr
= req
->recv_iov
[0].iov_base
;
299 req
->in
.body
= req
->recv_iov
[1].iov_base
;
300 req
->in
.dynamic
= req
->recv_iov
[2].iov_base
;
301 req
->in
.body_fixed
= req
->recv_iov
[1].iov_len
;
302 req
->in
.body_size
= req
->in
.body_fixed
;
303 req
->in
.body_size
+= req
->recv_iov
[2].iov_len
;
305 smb2_setup_bufinfo(req
);
307 req
->state
= SMB2_REQUEST_DONE
;
313 static void smb2_transport_break_handler(struct tevent_req
*subreq
)
315 struct smb2_transport
*transport
=
316 tevent_req_callback_data(subreq
,
317 struct smb2_transport
);
322 struct iovec
*recv_iov
= NULL
;
324 transport
->break_subreq
= NULL
;
326 status
= smb2cli_req_recv(subreq
, transport
, &recv_iov
, NULL
, 0);
328 if (!NT_STATUS_IS_OK(status
)) {
329 TALLOC_FREE(recv_iov
);
330 smb2_transport_dead(transport
, status
);
335 * Setup the subreq to handle the
336 * next incoming SMB2 Break.
338 subreq
= smb2cli_req_create(transport
,
342 0, /* additional_flags */
344 0, /* timeout_msec */
351 if (subreq
!= NULL
) {
352 smbXcli_req_set_pending(subreq
);
353 tevent_req_set_callback(subreq
,
354 smb2_transport_break_handler
,
356 transport
->break_subreq
= subreq
;
359 body
= recv_iov
[1].iov_base
;
361 len
= recv_iov
[1].iov_len
;
362 if (recv_iov
[1].iov_len
>= 2) {
363 len
= CVAL(body
, 0x00);
364 if (len
!= recv_iov
[1].iov_len
) {
365 len
= recv_iov
[1].iov_len
;
371 } else if (len
== 44) {
374 DEBUG(1,("Discarding smb2 oplock reply of invalid size %u\n",
376 TALLOC_FREE(recv_iov
);
377 status
= NT_STATUS_INVALID_NETWORK_RESPONSE
;
378 smb2_transport_dead(transport
, status
);
382 if (!lease
&& transport
->oplock
.handler
) {
383 struct smb2_handle h
;
386 level
= CVAL(body
, 0x02);
387 smb2_pull_handle(body
+0x08, &h
);
389 TALLOC_FREE(recv_iov
);
391 transport
->oplock
.handler(transport
, &h
, level
,
392 transport
->oplock
.private_data
);
393 } else if (lease
&& transport
->lease
.handler
) {
394 struct smb2_lease_break lb
;
397 lb
.break_flags
= SVAL(body
, 0x4);
398 memcpy(&lb
.current_lease
.lease_key
, body
+0x8,
399 sizeof(struct smb2_lease_key
));
400 lb
.current_lease
.lease_state
= SVAL(body
, 0x18);
401 lb
.new_lease_state
= SVAL(body
, 0x1C);
402 lb
.break_reason
= SVAL(body
, 0x20);
403 lb
.access_mask_hint
= SVAL(body
, 0x24);
404 lb
.share_mask_hint
= SVAL(body
, 0x28);
406 TALLOC_FREE(recv_iov
);
408 transport
->lease
.handler(transport
, &lb
,
409 transport
->lease
.private_data
);
411 DEBUG(5,("Got SMB2 %s break with no handler\n",
412 lease
? "lease" : "oplock"));
414 TALLOC_FREE(recv_iov
);
417 NTSTATUS
smb2_transport_compound_start(struct smb2_transport
*transport
,
420 TALLOC_FREE(transport
->compound
.reqs
);
421 ZERO_STRUCT(transport
->compound
);
423 transport
->compound
.reqs
= talloc_zero_array(transport
,
426 if (transport
->compound
.reqs
== NULL
) {
427 return NT_STATUS_NO_MEMORY
;
433 void smb2_transport_compound_set_related(struct smb2_transport
*transport
,
436 transport
->compound
.related
= related
;
439 void smb2_transport_credits_ask_num(struct smb2_transport
*transport
,
442 smb2cli_conn_set_max_credits(transport
->conn
, ask_num
);
445 static void idle_handler(struct tevent_context
*ev
,
446 struct tevent_timer
*te
, struct timeval t
, void *private_data
)
448 struct smb2_transport
*transport
= talloc_get_type(private_data
,
449 struct smb2_transport
);
452 transport
->idle
.func(transport
, transport
->idle
.private_data
);
454 next
= timeval_current_ofs_usec(transport
->idle
.period
);
455 transport
->idle
.te
= tevent_add_timer(transport
->ev
,
463 setup the idle handler for a transport
464 the period is in microseconds
466 void smb2_transport_idle_handler(struct smb2_transport
*transport
,
467 void (*idle_func
)(struct smb2_transport
*, void *),
471 TALLOC_FREE(transport
->idle
.te
);
473 transport
->idle
.func
= idle_func
;
474 transport
->idle
.private_data
= private_data
;
475 transport
->idle
.period
= period
;
477 transport
->idle
.te
= tevent_add_timer(transport
->ev
,
479 timeval_current_ofs_usec(period
),