2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "../libcli/smb/smb_common.h"
29 #include "../libcli/smb/smb_seal.h"
30 #include "../libcli/smb/smb_signing.h"
31 #include "../libcli/smb/read_smb.h"
32 #include "smbXcli_base.h"
33 #include "librpc/ndr/libndr.h"
37 struct smbXcli_session
;
42 struct sockaddr_storage local_ss
;
43 struct sockaddr_storage remote_ss
;
44 const char *remote_name
;
46 struct tevent_queue
*outgoing
;
47 struct tevent_req
**pending
;
48 struct tevent_req
*read_smb_req
;
50 enum protocol_types protocol
;
53 bool mandatory_signing
;
56 * The incoming dispatch function should return:
57 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
58 * - NT_STATUS_OK, if no more processing is desired, e.g.
59 * the dispatch function called
61 * - All other return values disconnect the connection.
63 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
69 uint32_t capabilities
;
74 uint32_t capabilities
;
77 uint16_t security_mode
;
86 const char *workgroup
;
92 uint32_t capabilities
;
97 struct smb_signing_state
*signing
;
98 struct smb_trans_enc_state
*trans_enc
;
100 struct tevent_req
*read_braw_req
;
105 uint32_t capabilities
;
106 uint16_t security_mode
;
111 uint32_t capabilities
;
112 uint16_t security_mode
;
114 uint32_t max_trans_size
;
115 uint32_t max_read_size
;
116 uint32_t max_write_size
;
123 uint16_t cur_credits
;
124 uint16_t max_credits
;
127 struct smbXcli_session
*sessions
;
130 struct smbXcli_session
{
131 struct smbXcli_session
*prev
, *next
;
132 struct smbXcli_conn
*conn
;
136 uint16_t session_flags
;
137 DATA_BLOB application_key
;
138 DATA_BLOB signing_key
;
141 DATA_BLOB encryption_key
;
142 DATA_BLOB decryption_key
;
143 uint64_t channel_nonce
;
144 uint64_t channel_next
;
145 DATA_BLOB channel_signing_key
;
149 struct smbXcli_req_state
{
150 struct tevent_context
*ev
;
151 struct smbXcli_conn
*conn
;
152 struct smbXcli_session
*session
; /* maybe NULL */
154 uint8_t length_hdr
[4];
161 /* Space for the header including the wct */
162 uint8_t hdr
[HDR_VWV
];
165 * For normal requests, smb1cli_req_send chooses a mid.
166 * SecondaryV trans requests need to use the mid of the primary
167 * request, so we need a place to store it.
168 * Assume it is set if != 0.
173 uint8_t bytecount_buf
[2];
175 #define MAX_SMB_IOV 10
176 /* length_hdr, hdr, words, byte_count, buffers */
177 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
182 struct tevent_req
**chained_requests
;
185 NTSTATUS recv_status
;
186 /* always an array of 3 talloc elements */
187 struct iovec
*recv_iov
;
191 const uint8_t *fixed
;
196 uint8_t transform
[SMB2_TF_HDR_SIZE
];
197 uint8_t hdr
[SMB2_HDR_BODY
];
198 uint8_t pad
[7]; /* padding space for compounding */
201 * always an array of 3 talloc elements
202 * (without a SMB2_TRANSFORM header!)
206 struct iovec
*recv_iov
;
208 uint16_t credit_charge
;
213 bool signing_skipped
;
219 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
222 * NT_STATUS_OK, means we do not notify the callers
224 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
226 while (conn
->sessions
) {
227 conn
->sessions
->conn
= NULL
;
228 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
231 if (conn
->smb1
.trans_enc
) {
232 TALLOC_FREE(conn
->smb1
.trans_enc
);
238 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
240 const char *remote_name
,
241 enum smb_signing_setting signing_state
,
242 uint32_t smb1_capabilities
,
243 struct GUID
*client_guid
,
244 uint32_t smb2_capabilities
)
246 struct smbXcli_conn
*conn
= NULL
;
248 struct sockaddr
*sa
= NULL
;
252 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
258 conn
->write_fd
= dup(fd
);
259 if (conn
->write_fd
== -1) {
263 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
264 if (conn
->remote_name
== NULL
) {
269 ss
= (void *)&conn
->local_ss
;
270 sa
= (struct sockaddr
*)ss
;
271 sa_length
= sizeof(conn
->local_ss
);
272 ret
= getsockname(fd
, sa
, &sa_length
);
276 ss
= (void *)&conn
->remote_ss
;
277 sa
= (struct sockaddr
*)ss
;
278 sa_length
= sizeof(conn
->remote_ss
);
279 ret
= getpeername(fd
, sa
, &sa_length
);
284 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
285 if (conn
->outgoing
== NULL
) {
288 conn
->pending
= NULL
;
290 conn
->protocol
= PROTOCOL_NONE
;
292 switch (signing_state
) {
293 case SMB_SIGNING_OFF
:
295 conn
->allow_signing
= false;
296 conn
->desire_signing
= false;
297 conn
->mandatory_signing
= false;
299 case SMB_SIGNING_DEFAULT
:
300 case SMB_SIGNING_IF_REQUIRED
:
301 /* if the server requires it */
302 conn
->allow_signing
= true;
303 conn
->desire_signing
= false;
304 conn
->mandatory_signing
= false;
306 case SMB_SIGNING_REQUIRED
:
308 conn
->allow_signing
= true;
309 conn
->desire_signing
= true;
310 conn
->mandatory_signing
= true;
314 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
315 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
317 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
318 conn
->smb1
.max_xmit
= 1024;
322 /* initialise signing */
323 conn
->smb1
.signing
= smb_signing_init(conn
,
325 conn
->desire_signing
,
326 conn
->mandatory_signing
);
327 if (!conn
->smb1
.signing
) {
331 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
332 if (conn
->mandatory_signing
) {
333 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
336 conn
->smb2
.client
.guid
= *client_guid
;
338 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
340 conn
->smb2
.cur_credits
= 1;
341 conn
->smb2
.max_credits
= 0;
343 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
347 if (conn
->write_fd
!= -1) {
348 close(conn
->write_fd
);
354 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
360 if (conn
->read_fd
== -1) {
367 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
369 return conn
->protocol
;
372 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
374 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
378 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
385 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
387 set_socket_options(conn
->read_fd
, options
);
390 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
392 return &conn
->local_ss
;
395 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
397 return &conn
->remote_ss
;
400 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
402 return conn
->remote_name
;
405 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
407 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
414 return conn
->smb1
.server
.max_mux
;
417 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
419 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
420 return conn
->smb2
.server
.system_time
;
423 return conn
->smb1
.server
.system_time
;
426 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
428 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
429 return &conn
->smb2
.server
.gss_blob
;
432 return &conn
->smb1
.server
.gss_blob
;
435 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
437 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
438 return &conn
->smb2
.server
.guid
;
441 return &conn
->smb1
.server
.guid
;
444 struct smbXcli_conn_samba_suicide_state
{
445 struct smbXcli_conn
*conn
;
450 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
452 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
453 struct tevent_context
*ev
,
454 struct smbXcli_conn
*conn
,
457 struct tevent_req
*req
, *subreq
;
458 struct smbXcli_conn_samba_suicide_state
*state
;
460 req
= tevent_req_create(mem_ctx
, &state
,
461 struct smbXcli_conn_samba_suicide_state
);
466 SIVAL(state
->buf
, 4, 0x74697865);
467 SCVAL(state
->buf
, 8, exitcode
);
468 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
470 state
->iov
.iov_base
= state
->buf
;
471 state
->iov
.iov_len
= sizeof(state
->buf
);
473 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
474 false, &state
->iov
, 1);
475 if (tevent_req_nomem(subreq
, req
)) {
476 return tevent_req_post(req
, ev
);
478 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
482 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
484 struct tevent_req
*req
= tevent_req_callback_data(
485 subreq
, struct tevent_req
);
486 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
487 req
, struct smbXcli_conn_samba_suicide_state
);
491 nwritten
= writev_recv(subreq
, &err
);
493 if (nwritten
== -1) {
494 NTSTATUS status
= map_nt_error_from_unix_common(err
);
495 smbXcli_conn_disconnect(state
->conn
, status
);
498 tevent_req_done(req
);
501 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
503 return tevent_req_simple_recv_ntstatus(req
);
506 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
509 TALLOC_CTX
*frame
= talloc_stackframe();
510 struct tevent_context
*ev
;
511 struct tevent_req
*req
;
512 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
515 if (smbXcli_conn_has_async_calls(conn
)) {
517 * Can't use sync call while an async call is in flight
519 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
522 ev
= tevent_context_init(frame
);
526 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
530 ok
= tevent_req_poll(req
, ev
);
532 status
= map_nt_error_from_unix_common(errno
);
535 status
= smbXcli_conn_samba_suicide_recv(req
);
541 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
543 return conn
->smb1
.capabilities
;
546 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
548 return conn
->smb1
.max_xmit
;
551 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
553 return conn
->smb1
.server
.session_key
;
556 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
558 return conn
->smb1
.server
.challenge
;
561 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
563 return conn
->smb1
.server
.security_mode
;
566 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
568 return conn
->smb1
.server
.readbraw
;
571 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
573 return conn
->smb1
.server
.writebraw
;
576 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
578 return conn
->smb1
.server
.lockread
;
581 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
583 return conn
->smb1
.server
.writeunlock
;
586 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
588 return conn
->smb1
.server
.time_zone
;
591 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
592 const DATA_BLOB user_session_key
,
593 const DATA_BLOB response
)
595 return smb_signing_activate(conn
->smb1
.signing
,
600 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
601 const uint8_t *buf
, uint32_t seqnum
)
603 return smb_signing_check_pdu(conn
->smb1
.signing
, buf
, seqnum
);
606 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
608 return smb_signing_is_active(conn
->smb1
.signing
);
611 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
612 struct smb_trans_enc_state
*es
)
614 /* Replace the old state, if any. */
615 if (conn
->smb1
.trans_enc
) {
616 TALLOC_FREE(conn
->smb1
.trans_enc
);
618 conn
->smb1
.trans_enc
= es
;
621 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
623 return common_encryption_on(conn
->smb1
.trans_enc
);
627 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
629 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
630 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
632 if (NT_STATUS_IS_OK(status
)) {
636 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
640 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
644 * Is the SMB command able to hold an AND_X successor
645 * @param[in] cmd The SMB command in question
646 * @retval Can we add a chained request after "cmd"?
648 bool smb1cli_is_andx_req(uint8_t cmd
)
668 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
670 size_t num_pending
= talloc_array_length(conn
->pending
);
676 result
= conn
->smb1
.mid
++;
677 if ((result
== 0) || (result
== 0xffff)) {
681 for (i
=0; i
<num_pending
; i
++) {
682 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
687 if (i
== num_pending
) {
693 void smbXcli_req_unset_pending(struct tevent_req
*req
)
695 struct smbXcli_req_state
*state
=
697 struct smbXcli_req_state
);
698 struct smbXcli_conn
*conn
= state
->conn
;
699 size_t num_pending
= talloc_array_length(conn
->pending
);
702 if (state
->smb1
.mid
!= 0) {
704 * This is a [nt]trans[2] request which waits
705 * for more than one reply.
710 talloc_set_destructor(req
, NULL
);
712 if (num_pending
== 1) {
714 * The pending read_smb tevent_req is a child of
715 * conn->pending. So if nothing is pending anymore, we need to
716 * delete the socket read fde.
718 TALLOC_FREE(conn
->pending
);
719 conn
->read_smb_req
= NULL
;
723 for (i
=0; i
<num_pending
; i
++) {
724 if (req
== conn
->pending
[i
]) {
728 if (i
== num_pending
) {
730 * Something's seriously broken. Just returning here is the
731 * right thing nevertheless, the point of this routine is to
732 * remove ourselves from conn->pending.
738 * Remove ourselves from the conn->pending array
740 for (; i
< (num_pending
- 1); i
++) {
741 conn
->pending
[i
] = conn
->pending
[i
+1];
745 * No NULL check here, we're shrinking by sizeof(void *), and
746 * talloc_realloc just adjusts the size for this.
748 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
753 static int smbXcli_req_destructor(struct tevent_req
*req
)
755 struct smbXcli_req_state
*state
=
757 struct smbXcli_req_state
);
760 * Make sure we really remove it from
761 * the pending array on destruction.
764 smbXcli_req_unset_pending(req
);
768 static bool smb1cli_req_cancel(struct tevent_req
*req
);
769 static bool smb2cli_req_cancel(struct tevent_req
*req
);
771 static bool smbXcli_req_cancel(struct tevent_req
*req
)
773 struct smbXcli_req_state
*state
=
775 struct smbXcli_req_state
);
777 if (!smbXcli_conn_is_connected(state
->conn
)) {
781 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
785 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
786 return smb2cli_req_cancel(req
);
789 return smb1cli_req_cancel(req
);
792 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
794 bool smbXcli_req_set_pending(struct tevent_req
*req
)
796 struct smbXcli_req_state
*state
=
798 struct smbXcli_req_state
);
799 struct smbXcli_conn
*conn
;
800 struct tevent_req
**pending
;
805 if (!smbXcli_conn_is_connected(conn
)) {
809 num_pending
= talloc_array_length(conn
->pending
);
811 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
813 if (pending
== NULL
) {
816 pending
[num_pending
] = req
;
817 conn
->pending
= pending
;
818 talloc_set_destructor(req
, smbXcli_req_destructor
);
819 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
821 if (!smbXcli_conn_receive_next(conn
)) {
823 * the caller should notify the current request
825 * And all other pending requests get notified
826 * by smbXcli_conn_disconnect().
828 smbXcli_req_unset_pending(req
);
829 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
836 static void smbXcli_conn_received(struct tevent_req
*subreq
);
838 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
840 size_t num_pending
= talloc_array_length(conn
->pending
);
841 struct tevent_req
*req
;
842 struct smbXcli_req_state
*state
;
844 if (conn
->read_smb_req
!= NULL
) {
848 if (num_pending
== 0) {
849 if (conn
->smb2
.mid
< UINT64_MAX
) {
850 /* no more pending requests, so we are done for now */
855 * If there are no more SMB2 requests possible,
856 * because we are out of message ids,
857 * we need to disconnect.
859 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
863 req
= conn
->pending
[0];
864 state
= tevent_req_data(req
, struct smbXcli_req_state
);
867 * We're the first ones, add the read_smb request that waits for the
868 * answer from the server
870 conn
->read_smb_req
= read_smb_send(conn
->pending
,
873 if (conn
->read_smb_req
== NULL
) {
876 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
880 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
882 tevent_queue_stop(conn
->outgoing
);
884 if (conn
->read_fd
!= -1) {
885 close(conn
->read_fd
);
887 if (conn
->write_fd
!= -1) {
888 close(conn
->write_fd
);
894 * Cancel all pending requests. We do not do a for-loop walking
895 * conn->pending because that array changes in
896 * smbXcli_req_unset_pending.
898 while (talloc_array_length(conn
->pending
) > 0) {
899 struct tevent_req
*req
;
900 struct smbXcli_req_state
*state
;
901 struct tevent_req
**chain
;
905 req
= conn
->pending
[0];
906 state
= tevent_req_data(req
, struct smbXcli_req_state
);
908 if (state
->smb1
.chained_requests
== NULL
) {
910 * We're dead. No point waiting for trans2
915 smbXcli_req_unset_pending(req
);
917 if (NT_STATUS_IS_OK(status
)) {
918 /* do not notify the callers */
923 * we need to defer the callback, because we may notify
924 * more then one caller.
926 tevent_req_defer_callback(req
, state
->ev
);
927 tevent_req_nterror(req
, status
);
931 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
932 num_chained
= talloc_array_length(chain
);
934 for (i
=0; i
<num_chained
; i
++) {
936 state
= tevent_req_data(req
, struct smbXcli_req_state
);
939 * We're dead. No point waiting for trans2
944 smbXcli_req_unset_pending(req
);
946 if (NT_STATUS_IS_OK(status
)) {
947 /* do not notify the callers */
952 * we need to defer the callback, because we may notify
953 * more than one caller.
955 tevent_req_defer_callback(req
, state
->ev
);
956 tevent_req_nterror(req
, status
);
963 * Fetch a smb request's mid. Only valid after the request has been sent by
964 * smb1cli_req_send().
966 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
968 struct smbXcli_req_state
*state
=
970 struct smbXcli_req_state
);
972 if (state
->smb1
.mid
!= 0) {
973 return state
->smb1
.mid
;
976 return SVAL(state
->smb1
.hdr
, HDR_MID
);
979 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
981 struct smbXcli_req_state
*state
=
983 struct smbXcli_req_state
);
985 state
->smb1
.mid
= mid
;
988 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
990 struct smbXcli_req_state
*state
=
992 struct smbXcli_req_state
);
994 return state
->smb1
.seqnum
;
997 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
999 struct smbXcli_req_state
*state
=
1000 tevent_req_data(req
,
1001 struct smbXcli_req_state
);
1003 state
->smb1
.seqnum
= seqnum
;
1006 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1010 for (i
=0; i
<count
; i
++) {
1011 result
+= iov
[i
].iov_len
;
1016 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1017 const struct iovec
*iov
,
1020 size_t len
= smbXcli_iov_len(iov
, count
);
1025 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1030 for (i
=0; i
<count
; i
++) {
1031 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1032 copied
+= iov
[i
].iov_len
;
1037 static void smb1cli_req_flags(enum protocol_types protocol
,
1038 uint32_t smb1_capabilities
,
1039 uint8_t smb_command
,
1040 uint8_t additional_flags
,
1041 uint8_t clear_flags
,
1043 uint16_t additional_flags2
,
1044 uint16_t clear_flags2
,
1048 uint16_t flags2
= 0;
1050 if (protocol
>= PROTOCOL_LANMAN1
) {
1051 flags
|= FLAG_CASELESS_PATHNAMES
;
1052 flags
|= FLAG_CANONICAL_PATHNAMES
;
1055 if (protocol
>= PROTOCOL_LANMAN2
) {
1056 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1057 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1060 if (protocol
>= PROTOCOL_NT1
) {
1061 flags2
|= FLAGS2_IS_LONG_NAME
;
1063 if (smb1_capabilities
& CAP_UNICODE
) {
1064 flags2
|= FLAGS2_UNICODE_STRINGS
;
1066 if (smb1_capabilities
& CAP_STATUS32
) {
1067 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1069 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1070 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1074 flags
|= additional_flags
;
1075 flags
&= ~clear_flags
;
1076 flags2
|= additional_flags2
;
1077 flags2
&= ~clear_flags2
;
1083 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1085 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1087 struct smbXcli_req_state
*state
=
1088 tevent_req_data(req
,
1089 struct smbXcli_req_state
);
1096 struct tevent_req
*subreq
;
1099 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1100 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1101 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1102 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1103 tid
= SVAL(state
->smb1
.hdr
, HDR_TID
);
1104 uid
= SVAL(state
->smb1
.hdr
, HDR_UID
);
1105 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1107 subreq
= smb1cli_req_create(state
, state
->ev
,
1115 0, NULL
); /* bytes */
1116 if (subreq
== NULL
) {
1119 smb1cli_req_set_mid(subreq
, mid
);
1121 status
= smb1cli_req_chain_submit(&subreq
, 1);
1122 if (!NT_STATUS_IS_OK(status
)) {
1123 TALLOC_FREE(subreq
);
1126 smb1cli_req_set_mid(subreq
, 0);
1128 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1133 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1135 /* we do not care about the result */
1136 TALLOC_FREE(subreq
);
1139 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1140 struct tevent_context
*ev
,
1141 struct smbXcli_conn
*conn
,
1142 uint8_t smb_command
,
1143 uint8_t additional_flags
,
1144 uint8_t clear_flags
,
1145 uint16_t additional_flags2
,
1146 uint16_t clear_flags2
,
1147 uint32_t timeout_msec
,
1151 uint8_t wct
, uint16_t *vwv
,
1153 struct iovec
*bytes_iov
)
1155 struct tevent_req
*req
;
1156 struct smbXcli_req_state
*state
;
1158 uint16_t flags2
= 0;
1160 if (iov_count
> MAX_SMB_IOV
) {
1162 * Should not happen :-)
1167 req
= tevent_req_create(mem_ctx
, &state
,
1168 struct smbXcli_req_state
);
1175 state
->smb1
.recv_cmd
= 0xFF;
1176 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1177 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1178 if (state
->smb1
.recv_iov
== NULL
) {
1183 smb1cli_req_flags(conn
->protocol
,
1184 conn
->smb1
.capabilities
,
1193 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1194 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1195 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1196 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1197 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1198 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1199 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1200 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1201 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1202 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1203 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1205 state
->smb1
.vwv
= vwv
;
1207 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1209 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1210 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1211 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1212 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1213 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1214 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1215 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1216 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1218 if (iov_count
!= 0) {
1219 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1220 iov_count
* sizeof(*bytes_iov
));
1222 state
->smb1
.iov_count
= iov_count
+ 4;
1224 if (timeout_msec
> 0) {
1225 struct timeval endtime
;
1227 endtime
= timeval_current_ofs_msec(timeout_msec
);
1228 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1233 switch (smb_command
) {
1237 state
->one_way
= true;
1240 state
->one_way
= true;
1241 state
->smb1
.one_way_seqnum
= true;
1245 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1246 state
->one_way
= true;
1254 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1255 struct iovec
*iov
, int iov_count
,
1257 bool one_way_seqnum
)
1259 TALLOC_CTX
*frame
= NULL
;
1263 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1264 * iovec directly. MD5Update would do that just fine.
1267 if (iov_count
< 4) {
1268 return NT_STATUS_INVALID_PARAMETER_MIX
;
1270 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1271 return NT_STATUS_INVALID_PARAMETER_MIX
;
1273 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1274 return NT_STATUS_INVALID_PARAMETER_MIX
;
1276 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1277 return NT_STATUS_INVALID_PARAMETER_MIX
;
1279 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1280 return NT_STATUS_INVALID_PARAMETER_MIX
;
1283 frame
= talloc_stackframe();
1285 buf
= smbXcli_iov_concat(frame
, iov
, iov_count
);
1287 return NT_STATUS_NO_MEMORY
;
1290 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1292 smb_signing_sign_pdu(conn
->smb1
.signing
, buf
, *seqnum
);
1293 memcpy(iov
[1].iov_base
, buf
+4, iov
[1].iov_len
);
1296 return NT_STATUS_OK
;
1299 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1300 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1301 TALLOC_CTX
*tmp_mem
,
1304 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1305 struct smbXcli_req_state
*state
,
1306 struct iovec
*iov
, int iov_count
)
1308 struct tevent_req
*subreq
;
1313 if (!smbXcli_conn_is_connected(state
->conn
)) {
1314 return NT_STATUS_CONNECTION_DISCONNECTED
;
1317 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1318 return NT_STATUS_REVISION_MISMATCH
;
1321 if (iov_count
< 4) {
1322 return NT_STATUS_INVALID_PARAMETER_MIX
;
1324 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1325 return NT_STATUS_INVALID_PARAMETER_MIX
;
1327 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1328 return NT_STATUS_INVALID_PARAMETER_MIX
;
1330 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1331 return NT_STATUS_INVALID_PARAMETER_MIX
;
1333 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1334 return NT_STATUS_INVALID_PARAMETER_MIX
;
1337 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1338 if (cmd
== SMBreadBraw
) {
1339 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1340 return NT_STATUS_INVALID_PARAMETER_MIX
;
1342 state
->conn
->smb1
.read_braw_req
= req
;
1345 if (state
->smb1
.mid
!= 0) {
1346 mid
= state
->smb1
.mid
;
1348 mid
= smb1cli_alloc_mid(state
->conn
);
1350 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1352 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1354 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1355 &state
->smb1
.seqnum
,
1356 state
->smb1
.one_way_seqnum
);
1358 if (!NT_STATUS_IS_OK(status
)) {
1363 * If we supported multiple encrytion contexts
1364 * here we'd look up based on tid.
1366 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1367 char *buf
, *enc_buf
;
1369 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1371 return NT_STATUS_NO_MEMORY
;
1373 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1374 (char *)buf
, &enc_buf
);
1376 if (!NT_STATUS_IS_OK(status
)) {
1377 DEBUG(0, ("Error in encrypting client message: %s\n",
1378 nt_errstr(status
)));
1381 buf
= (char *)talloc_memdup(state
, enc_buf
,
1382 smb_len_nbt(enc_buf
)+4);
1385 return NT_STATUS_NO_MEMORY
;
1387 iov
[0].iov_base
= (void *)buf
;
1388 iov
[0].iov_len
= talloc_get_size(buf
);
1392 if (state
->conn
->dispatch_incoming
== NULL
) {
1393 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1396 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1398 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1399 state
->conn
->write_fd
, false, iov
, iov_count
);
1400 if (subreq
== NULL
) {
1401 return NT_STATUS_NO_MEMORY
;
1403 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1404 return NT_STATUS_OK
;
1407 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1408 struct tevent_context
*ev
,
1409 struct smbXcli_conn
*conn
,
1410 uint8_t smb_command
,
1411 uint8_t additional_flags
,
1412 uint8_t clear_flags
,
1413 uint16_t additional_flags2
,
1414 uint16_t clear_flags2
,
1415 uint32_t timeout_msec
,
1419 uint8_t wct
, uint16_t *vwv
,
1421 const uint8_t *bytes
)
1423 struct tevent_req
*req
;
1427 iov
.iov_base
= discard_const_p(void, bytes
);
1428 iov
.iov_len
= num_bytes
;
1430 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1431 additional_flags
, clear_flags
,
1432 additional_flags2
, clear_flags2
,
1439 if (!tevent_req_is_in_progress(req
)) {
1440 return tevent_req_post(req
, ev
);
1442 status
= smb1cli_req_chain_submit(&req
, 1);
1443 if (tevent_req_nterror(req
, status
)) {
1444 return tevent_req_post(req
, ev
);
1449 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1451 struct tevent_req
*req
=
1452 tevent_req_callback_data(subreq
,
1454 struct smbXcli_req_state
*state
=
1455 tevent_req_data(req
,
1456 struct smbXcli_req_state
);
1460 nwritten
= writev_recv(subreq
, &err
);
1461 TALLOC_FREE(subreq
);
1462 if (nwritten
== -1) {
1463 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1464 smbXcli_conn_disconnect(state
->conn
, status
);
1468 if (state
->one_way
) {
1469 state
->inbuf
= NULL
;
1470 tevent_req_done(req
);
1474 if (!smbXcli_req_set_pending(req
)) {
1475 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1480 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1482 struct smbXcli_conn
*conn
=
1483 tevent_req_callback_data(subreq
,
1484 struct smbXcli_conn
);
1485 TALLOC_CTX
*frame
= talloc_stackframe();
1491 if (subreq
!= conn
->read_smb_req
) {
1492 DEBUG(1, ("Internal error: cli_smb_received called with "
1493 "unexpected subreq\n"));
1494 status
= NT_STATUS_INTERNAL_ERROR
;
1495 smbXcli_conn_disconnect(conn
, status
);
1499 conn
->read_smb_req
= NULL
;
1501 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1502 TALLOC_FREE(subreq
);
1503 if (received
== -1) {
1504 status
= map_nt_error_from_unix_common(err
);
1505 smbXcli_conn_disconnect(conn
, status
);
1510 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1512 if (NT_STATUS_IS_OK(status
)) {
1514 * We should not do any more processing
1515 * as the dispatch function called
1516 * tevent_req_done().
1519 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1521 * We got an error, so notify all pending requests
1523 smbXcli_conn_disconnect(conn
, status
);
1528 * We got NT_STATUS_RETRY, so we may ask for a
1529 * next incoming pdu.
1531 if (!smbXcli_conn_receive_next(conn
)) {
1532 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1536 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1537 struct iovec
**piov
, int *pnum_iov
)
1548 buflen
= smb_len_nbt(buf
);
1551 hdr
= buf
+ NBT_HDR_SIZE
;
1553 if (buflen
< MIN_SMB_SIZE
) {
1554 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1558 * This returns iovec elements in the following order:
1573 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1575 return NT_STATUS_NO_MEMORY
;
1577 iov
[0].iov_base
= hdr
;
1578 iov
[0].iov_len
= HDR_WCT
;
1581 cmd
= CVAL(hdr
, HDR_COM
);
1585 size_t len
= buflen
- taken
;
1587 struct iovec
*iov_tmp
;
1594 * we need at least WCT and BCC
1596 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1598 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1599 __location__
, (int)len
, (int)needed
));
1604 * Now we check if the specified words are there
1606 wct
= CVAL(hdr
, wct_ofs
);
1607 needed
+= wct
* sizeof(uint16_t);
1609 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1610 __location__
, (int)len
, (int)needed
));
1615 * Now we check if the specified bytes are there
1617 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1618 bcc
= SVAL(hdr
, bcc_ofs
);
1619 needed
+= bcc
* sizeof(uint8_t);
1621 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1622 __location__
, (int)len
, (int)needed
));
1627 * we allocate 2 iovec structures for words and bytes
1629 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1631 if (iov_tmp
== NULL
) {
1633 return NT_STATUS_NO_MEMORY
;
1636 cur
= &iov
[num_iov
];
1639 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1640 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1641 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1642 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1646 if (!smb1cli_is_andx_req(cmd
)) {
1648 * If the current command does not have AndX chanining
1654 if (wct
== 0 && bcc
== 0) {
1656 * An empty response also ends the chain,
1657 * most likely with an error.
1663 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1664 __location__
, (int)wct
, (int)cmd
));
1667 cmd
= CVAL(cur
[0].iov_base
, 0);
1670 * If it is the end of the chain we are also done.
1674 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1676 if (wct_ofs
< taken
) {
1677 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1679 if (wct_ofs
> buflen
) {
1680 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1684 * we consumed everything up to the start of the next
1690 remaining
= buflen
- taken
;
1692 if (remaining
> 0 && num_iov
>= 3) {
1694 * The last DATA block gets the remaining
1695 * bytes, this is needed to support
1696 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1698 iov
[num_iov
-1].iov_len
+= remaining
;
1702 *pnum_iov
= num_iov
;
1703 return NT_STATUS_OK
;
1707 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1710 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1711 TALLOC_CTX
*tmp_mem
,
1714 struct tevent_req
*req
;
1715 struct smbXcli_req_state
*state
;
1722 const uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1723 struct iovec
*iov
= NULL
;
1725 struct tevent_req
**chain
= NULL
;
1726 size_t num_chained
= 0;
1727 size_t num_responses
= 0;
1729 if (conn
->smb1
.read_braw_req
!= NULL
) {
1730 req
= conn
->smb1
.read_braw_req
;
1731 conn
->smb1
.read_braw_req
= NULL
;
1732 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1734 smbXcli_req_unset_pending(req
);
1736 if (state
->smb1
.recv_iov
== NULL
) {
1738 * For requests with more than
1739 * one response, we have to readd the
1742 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1745 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1746 return NT_STATUS_OK
;
1750 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inbuf
+ NBT_HDR_SIZE
);
1751 state
->smb1
.recv_iov
[0].iov_len
= smb_len_nbt(inbuf
);
1752 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1753 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1755 state
->smb1
.recv_cmd
= SMBreadBraw
;
1756 state
->smb1
.recv_status
= NT_STATUS_OK
;
1757 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1759 tevent_req_done(req
);
1760 return NT_STATUS_OK
;
1763 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1764 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1765 DEBUG(10, ("Got non-SMB PDU\n"));
1766 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1770 * If we supported multiple encrytion contexts
1771 * here we'd look up based on tid.
1773 if (common_encryption_on(conn
->smb1
.trans_enc
)
1774 && (CVAL(inbuf
, 0) == 0)) {
1775 uint16_t enc_ctx_num
;
1777 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1778 if (!NT_STATUS_IS_OK(status
)) {
1779 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1780 nt_errstr(status
)));
1784 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1785 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1787 conn
->smb1
.trans_enc
->enc_ctx_num
));
1788 return NT_STATUS_INVALID_HANDLE
;
1791 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1793 if (!NT_STATUS_IS_OK(status
)) {
1794 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1795 nt_errstr(status
)));
1800 mid
= SVAL(inhdr
, HDR_MID
);
1801 num_pending
= talloc_array_length(conn
->pending
);
1803 for (i
=0; i
<num_pending
; i
++) {
1804 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1808 if (i
== num_pending
) {
1809 /* Dump unexpected reply */
1810 return NT_STATUS_RETRY
;
1813 oplock_break
= false;
1815 if (mid
== 0xffff) {
1817 * Paranoia checks that this is really an oplock break request.
1819 oplock_break
= (smb_len_nbt(inbuf
) == 51); /* hdr + 8 words */
1820 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1821 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1822 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1823 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1825 if (!oplock_break
) {
1826 /* Dump unexpected reply */
1827 return NT_STATUS_RETRY
;
1831 req
= conn
->pending
[i
];
1832 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1834 if (!oplock_break
/* oplock breaks are not signed */
1835 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1836 inbuf
, state
->smb1
.seqnum
+1)) {
1837 DEBUG(10, ("cli_check_sign_mac failed\n"));
1838 return NT_STATUS_ACCESS_DENIED
;
1841 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1843 if (!NT_STATUS_IS_OK(status
)) {
1844 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1845 nt_errstr(status
)));
1849 cmd
= CVAL(inhdr
, HDR_COM
);
1850 status
= smb1cli_pull_raw_error(inhdr
);
1852 if (state
->smb1
.chained_requests
== NULL
) {
1854 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1857 smbXcli_req_unset_pending(req
);
1859 if (state
->smb1
.recv_iov
== NULL
) {
1861 * For requests with more than
1862 * one response, we have to readd the
1865 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1868 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1869 return NT_STATUS_OK
;
1873 state
->smb1
.recv_cmd
= cmd
;
1874 state
->smb1
.recv_status
= status
;
1875 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1877 state
->smb1
.recv_iov
[0] = iov
[0];
1878 state
->smb1
.recv_iov
[1] = iov
[1];
1879 state
->smb1
.recv_iov
[2] = iov
[2];
1881 if (talloc_array_length(conn
->pending
) == 0) {
1882 tevent_req_done(req
);
1883 return NT_STATUS_OK
;
1886 tevent_req_defer_callback(req
, state
->ev
);
1887 tevent_req_done(req
);
1888 return NT_STATUS_RETRY
;
1891 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1892 num_chained
= talloc_array_length(chain
);
1893 num_responses
= (num_iov
- 1)/2;
1895 if (num_responses
> num_chained
) {
1896 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1899 for (i
=0; i
<num_chained
; i
++) {
1900 size_t iov_idx
= 1 + (i
*2);
1901 struct iovec
*cur
= &iov
[iov_idx
];
1905 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1907 smbXcli_req_unset_pending(req
);
1910 * as we finish multiple requests here
1911 * we need to defer the callbacks as
1912 * they could destroy our current stack state.
1914 tevent_req_defer_callback(req
, state
->ev
);
1916 if (i
>= num_responses
) {
1917 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1921 if (state
->smb1
.recv_iov
== NULL
) {
1923 * For requests with more than
1924 * one response, we have to readd the
1927 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1930 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1935 state
->smb1
.recv_cmd
= cmd
;
1937 if (i
== (num_responses
- 1)) {
1939 * The last request in the chain gets the status
1941 state
->smb1
.recv_status
= status
;
1943 cmd
= CVAL(cur
[0].iov_base
, 0);
1944 state
->smb1
.recv_status
= NT_STATUS_OK
;
1947 state
->inbuf
= inbuf
;
1950 * Note: here we use talloc_reference() in a way
1951 * that does not expose it to the caller.
1953 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
1954 if (tevent_req_nomem(inbuf_ref
, req
)) {
1958 /* copy the related buffers */
1959 state
->smb1
.recv_iov
[0] = iov
[0];
1960 state
->smb1
.recv_iov
[1] = cur
[0];
1961 state
->smb1
.recv_iov
[2] = cur
[1];
1963 tevent_req_done(req
);
1966 return NT_STATUS_RETRY
;
1969 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
1970 TALLOC_CTX
*mem_ctx
,
1971 struct iovec
**piov
,
1975 uint32_t *pvwv_offset
,
1976 uint32_t *pnum_bytes
,
1978 uint32_t *pbytes_offset
,
1980 const struct smb1cli_req_expected_response
*expected
,
1981 size_t num_expected
)
1983 struct smbXcli_req_state
*state
=
1984 tevent_req_data(req
,
1985 struct smbXcli_req_state
);
1986 NTSTATUS status
= NT_STATUS_OK
;
1987 struct iovec
*recv_iov
= NULL
;
1988 uint8_t *hdr
= NULL
;
1990 uint32_t vwv_offset
= 0;
1991 uint16_t *vwv
= NULL
;
1992 uint32_t num_bytes
= 0;
1993 uint32_t bytes_offset
= 0;
1994 uint8_t *bytes
= NULL
;
1996 bool found_status
= false;
1997 bool found_size
= false;
2011 if (pvwv_offset
!= NULL
) {
2014 if (pnum_bytes
!= NULL
) {
2017 if (pbytes
!= NULL
) {
2020 if (pbytes_offset
!= NULL
) {
2023 if (pinbuf
!= NULL
) {
2027 if (state
->inbuf
!= NULL
) {
2028 recv_iov
= state
->smb1
.recv_iov
;
2029 state
->smb1
.recv_iov
= NULL
;
2030 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2031 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2032 wct
= recv_iov
[1].iov_len
/2;
2033 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2034 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2035 num_bytes
= recv_iov
[2].iov_len
;
2036 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2037 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2041 if (tevent_req_is_nterror(req
, &status
)) {
2042 for (i
=0; i
< num_expected
; i
++) {
2043 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2044 found_status
= true;
2050 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2056 if (num_expected
== 0) {
2057 found_status
= true;
2061 status
= state
->smb1
.recv_status
;
2063 for (i
=0; i
< num_expected
; i
++) {
2064 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2068 found_status
= true;
2069 if (expected
[i
].wct
== 0) {
2074 if (expected
[i
].wct
== wct
) {
2080 if (!found_status
) {
2085 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2089 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2101 if (pvwv_offset
!= NULL
) {
2102 *pvwv_offset
= vwv_offset
;
2104 if (pnum_bytes
!= NULL
) {
2105 *pnum_bytes
= num_bytes
;
2107 if (pbytes
!= NULL
) {
2110 if (pbytes_offset
!= NULL
) {
2111 *pbytes_offset
= bytes_offset
;
2113 if (pinbuf
!= NULL
) {
2114 *pinbuf
= state
->inbuf
;
2120 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2127 for (i
=0; i
<num_reqs
; i
++) {
2128 struct smbXcli_req_state
*state
;
2129 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2130 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2131 state
->smb1
.iov_count
-2);
2132 wct_ofs
= (wct_ofs
+ 3) & ~3;
2137 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2139 struct smbXcli_req_state
*first_state
=
2140 tevent_req_data(reqs
[0],
2141 struct smbXcli_req_state
);
2142 struct smbXcli_req_state
*state
;
2144 size_t chain_padding
= 0;
2146 struct iovec
*iov
= NULL
;
2147 struct iovec
*this_iov
;
2151 if (num_reqs
== 1) {
2152 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2153 first_state
->smb1
.iov
,
2154 first_state
->smb1
.iov_count
);
2158 for (i
=0; i
<num_reqs
; i
++) {
2159 if (!tevent_req_is_in_progress(reqs
[i
])) {
2160 return NT_STATUS_INTERNAL_ERROR
;
2163 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2165 if (state
->smb1
.iov_count
< 4) {
2166 return NT_STATUS_INVALID_PARAMETER_MIX
;
2171 * The NBT and SMB header
2184 iovlen
+= state
->smb1
.iov_count
- 2;
2187 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2189 return NT_STATUS_NO_MEMORY
;
2192 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2193 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2194 if (first_state
->smb1
.chained_requests
== NULL
) {
2196 return NT_STATUS_NO_MEMORY
;
2199 wct_offset
= HDR_WCT
;
2202 for (i
=0; i
<num_reqs
; i
++) {
2203 size_t next_padding
= 0;
2206 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2208 if (i
< num_reqs
-1) {
2209 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2210 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2212 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2213 return NT_STATUS_INVALID_PARAMETER_MIX
;
2217 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2218 state
->smb1
.iov_count
-2) + 1;
2219 if ((wct_offset
% 4) != 0) {
2220 next_padding
= 4 - (wct_offset
% 4);
2222 wct_offset
+= next_padding
;
2223 vwv
= state
->smb1
.vwv
;
2225 if (i
< num_reqs
-1) {
2226 struct smbXcli_req_state
*next_state
=
2227 tevent_req_data(reqs
[i
+1],
2228 struct smbXcli_req_state
);
2229 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2231 SSVAL(vwv
+1, 0, wct_offset
);
2232 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2233 /* properly end the chain */
2234 SCVAL(vwv
+0, 0, 0xff);
2235 SCVAL(vwv
+0, 1, 0xff);
2241 * The NBT and SMB header
2243 this_iov
[0] = state
->smb1
.iov
[0];
2244 this_iov
[1] = state
->smb1
.iov
[1];
2248 * This one is a bit subtle. We have to add
2249 * chain_padding bytes between the requests, and we
2250 * have to also include the wct field of the
2251 * subsequent requests. We use the subsequent header
2252 * for the padding, it contains the wct field in its
2255 this_iov
[0].iov_len
= chain_padding
+1;
2256 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2257 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2258 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2263 * copy the words and bytes
2265 memcpy(this_iov
, state
->smb1
.iov
+2,
2266 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2267 this_iov
+= state
->smb1
.iov_count
- 2;
2268 chain_padding
= next_padding
;
2271 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2272 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2274 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2275 return NT_STATUS_INVALID_PARAMETER_MIX
;
2278 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2279 if (!NT_STATUS_IS_OK(status
)) {
2281 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2285 return NT_STATUS_OK
;
2288 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2290 return ((tevent_queue_length(conn
->outgoing
) != 0)
2291 || (talloc_array_length(conn
->pending
) != 0));
2294 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2296 return conn
->smb2
.server
.capabilities
;
2299 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2301 return conn
->smb2
.server
.security_mode
;
2304 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2306 return conn
->smb2
.server
.max_trans_size
;
2309 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2311 return conn
->smb2
.server
.max_read_size
;
2314 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2316 return conn
->smb2
.server
.max_write_size
;
2319 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2320 uint16_t max_credits
)
2322 conn
->smb2
.max_credits
= max_credits
;
2325 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2327 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2329 struct smbXcli_req_state
*state
=
2330 tevent_req_data(req
,
2331 struct smbXcli_req_state
);
2332 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2333 uint32_t pid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_PID
);
2334 uint32_t tid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_TID
);
2335 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2336 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2337 struct smbXcli_session
*session
= state
->session
;
2338 uint8_t *fixed
= state
->smb2
.pad
;
2339 uint16_t fixed_len
= 4;
2340 struct tevent_req
*subreq
;
2341 struct smbXcli_req_state
*substate
;
2344 SSVAL(fixed
, 0, 0x04);
2347 subreq
= smb2cli_req_create(state
, state
->ev
,
2355 if (subreq
== NULL
) {
2358 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2360 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2364 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2365 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2366 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2367 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2368 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2370 status
= smb2cli_req_compound_submit(&subreq
, 1);
2371 if (!NT_STATUS_IS_OK(status
)) {
2372 TALLOC_FREE(subreq
);
2376 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2381 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2383 /* we do not care about the result */
2384 TALLOC_FREE(subreq
);
2387 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2388 struct tevent_context
*ev
,
2389 struct smbXcli_conn
*conn
,
2391 uint32_t additional_flags
,
2392 uint32_t clear_flags
,
2393 uint32_t timeout_msec
,
2396 struct smbXcli_session
*session
,
2397 const uint8_t *fixed
,
2402 struct tevent_req
*req
;
2403 struct smbXcli_req_state
*state
;
2407 req
= tevent_req_create(mem_ctx
, &state
,
2408 struct smbXcli_req_state
);
2415 state
->session
= session
;
2418 uid
= session
->smb2
.session_id
;
2420 state
->smb2
.should_sign
= session
->smb2
.should_sign
;
2421 state
->smb2
.should_encrypt
= session
->smb2
.should_encrypt
;
2423 /* TODO: turn on encryption based on the tree connect. */
2425 if (cmd
== SMB2_OP_SESSSETUP
&&
2426 session
->smb2
.signing_key
.length
!= 0) {
2427 state
->smb2
.should_sign
= true;
2430 if (cmd
== SMB2_OP_SESSSETUP
&&
2431 session
->smb2
.channel_signing_key
.length
== 0) {
2432 state
->smb2
.should_encrypt
= false;
2435 if (state
->smb2
.should_encrypt
) {
2436 state
->smb2
.should_sign
= false;
2440 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2441 if (state
->smb2
.recv_iov
== NULL
) {
2446 flags
|= additional_flags
;
2447 flags
&= ~clear_flags
;
2449 state
->smb2
.fixed
= fixed
;
2450 state
->smb2
.fixed_len
= fixed_len
;
2451 state
->smb2
.dyn
= dyn
;
2452 state
->smb2
.dyn_len
= dyn_len
;
2454 if (state
->smb2
.should_encrypt
) {
2455 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2456 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
2459 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2460 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2461 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2462 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2463 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2464 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2465 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2468 case SMB2_OP_CANCEL
:
2469 state
->one_way
= true;
2473 * If this is a dummy request, it will have
2474 * UINT64_MAX as message id.
2475 * If we send on break acknowledgement,
2476 * this gets overwritten later.
2478 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2482 if (timeout_msec
> 0) {
2483 struct timeval endtime
;
2485 endtime
= timeval_current_ofs_msec(timeout_msec
);
2486 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2494 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2496 struct smbXcli_req_state
*state
=
2497 tevent_req_data(req
,
2498 struct smbXcli_req_state
);
2500 state
->smb2
.notify_async
= true;
2503 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2504 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2505 TALLOC_CTX
*tmp_mem
,
2508 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2511 struct smbXcli_req_state
*state
;
2512 struct tevent_req
*subreq
;
2514 int i
, num_iov
, nbt_len
;
2517 * 1 for the nbt length
2518 * per request: TRANSFORM, HDR, fixed, dyn, padding
2519 * -1 because the last one does not need padding
2522 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 5*num_reqs
- 1);
2524 return NT_STATUS_NO_MEMORY
;
2530 for (i
=0; i
<num_reqs
; i
++) {
2540 const DATA_BLOB
*signing_key
= NULL
;
2541 const DATA_BLOB
*encryption_key
= NULL
;
2543 if (!tevent_req_is_in_progress(reqs
[i
])) {
2544 return NT_STATUS_INTERNAL_ERROR
;
2547 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2549 if (!smbXcli_conn_is_connected(state
->conn
)) {
2550 return NT_STATUS_CONNECTION_DISCONNECTED
;
2553 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2554 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2555 return NT_STATUS_REVISION_MISMATCH
;
2558 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2559 if (opcode
== SMB2_OP_CANCEL
) {
2563 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2565 return NT_STATUS_CONNECTION_ABORTED
;
2568 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2569 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2574 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2576 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2577 if (avail
< charge
) {
2578 return NT_STATUS_INTERNAL_ERROR
;
2582 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2583 credits
= state
->conn
->smb2
.max_credits
-
2584 state
->conn
->smb2
.cur_credits
;
2586 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2590 mid
= state
->conn
->smb2
.mid
;
2591 state
->conn
->smb2
.mid
+= charge
;
2592 state
->conn
->smb2
.cur_credits
-= charge
;
2594 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2595 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2597 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2598 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2601 if (state
->session
) {
2603 * We prefer the channel signing key if it is
2606 if (state
->smb2
.should_sign
) {
2607 signing_key
= &state
->session
->smb2
.channel_signing_key
;
2611 * If it is a channel binding, we already have the main
2612 * signing key and try that one.
2614 if (signing_key
&& signing_key
->length
== 0) {
2615 signing_key
= &state
->session
->smb2
.signing_key
;
2619 * If we do not have any session key yet, we skip the
2620 * signing of SMB2_OP_SESSSETUP requests.
2622 if (signing_key
&& signing_key
->length
== 0) {
2626 if (state
->smb2
.should_encrypt
) {
2627 encryption_key
= &state
->session
->smb2
.encryption_key
;
2631 if (encryption_key
) {
2633 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
2634 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
2639 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2640 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2643 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2644 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2647 if (state
->smb2
.dyn
!= NULL
) {
2648 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2649 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2653 reqlen
= sizeof(state
->smb2
.hdr
);
2654 reqlen
+= state
->smb2
.fixed_len
;
2655 reqlen
+= state
->smb2
.dyn_len
;
2657 if (i
< num_reqs
-1) {
2658 if ((reqlen
% 8) > 0) {
2659 uint8_t pad
= 8 - (reqlen
% 8);
2660 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2661 iov
[num_iov
].iov_len
= pad
;
2665 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2668 if (encryption_key
) {
2673 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
, mid
);
2674 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
2675 state
->session
->smb2
.channel_nonce
);
2676 SBVAL(state
->smb2
.transform
, SMB2_TF_MSG_SIZE
,
2679 buf
= talloc_array(iov
, uint8_t, reqlen
);
2681 return NT_STATUS_NO_MEMORY
;
2684 reqlen
+= SMB2_TF_HDR_SIZE
;
2687 * We copy the buffers before encrypting them,
2688 * this is at least currently needed for the
2689 * to keep state->smb2.hdr.
2691 * Also the callers may expect there buffers
2694 for (vi
= hdr_iov
; vi
< num_iov
; vi
++) {
2695 struct iovec
*v
= &iov
[vi
];
2696 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
2698 memcpy(buf
, o
, v
->iov_len
);
2699 v
->iov_base
= (void *)buf
;
2703 status
= smb2_signing_encrypt_pdu(*encryption_key
,
2704 state
->session
->conn
->protocol
,
2705 &iov
[tf_iov
], num_iov
- tf_iov
);
2706 if (!NT_STATUS_IS_OK(status
)) {
2709 } else if (signing_key
) {
2712 status
= smb2_signing_sign_pdu(*signing_key
,
2713 state
->session
->conn
->protocol
,
2714 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2715 if (!NT_STATUS_IS_OK(status
)) {
2722 ret
= smbXcli_req_set_pending(reqs
[i
]);
2724 return NT_STATUS_NO_MEMORY
;
2728 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2729 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2730 iov
[0].iov_base
= state
->length_hdr
;
2731 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2733 if (state
->conn
->dispatch_incoming
== NULL
) {
2734 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2737 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2738 state
->conn
->write_fd
, false, iov
, num_iov
);
2739 if (subreq
== NULL
) {
2740 return NT_STATUS_NO_MEMORY
;
2742 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2743 return NT_STATUS_OK
;
2746 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2748 struct smbXcli_req_state
*state
=
2749 tevent_req_data(req
,
2750 struct smbXcli_req_state
);
2752 state
->smb2
.credit_charge
= charge
;
2755 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2756 struct tevent_context
*ev
,
2757 struct smbXcli_conn
*conn
,
2759 uint32_t additional_flags
,
2760 uint32_t clear_flags
,
2761 uint32_t timeout_msec
,
2764 struct smbXcli_session
*session
,
2765 const uint8_t *fixed
,
2770 struct tevent_req
*req
;
2773 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2774 additional_flags
, clear_flags
,
2777 fixed
, fixed_len
, dyn
, dyn_len
);
2781 if (!tevent_req_is_in_progress(req
)) {
2782 return tevent_req_post(req
, ev
);
2784 status
= smb2cli_req_compound_submit(&req
, 1);
2785 if (tevent_req_nterror(req
, status
)) {
2786 return tevent_req_post(req
, ev
);
2791 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2793 struct tevent_req
*req
=
2794 tevent_req_callback_data(subreq
,
2796 struct smbXcli_req_state
*state
=
2797 tevent_req_data(req
,
2798 struct smbXcli_req_state
);
2802 nwritten
= writev_recv(subreq
, &err
);
2803 TALLOC_FREE(subreq
);
2804 if (nwritten
== -1) {
2805 /* here, we need to notify all pending requests */
2806 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2807 smbXcli_conn_disconnect(state
->conn
, status
);
2812 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2815 TALLOC_CTX
*mem_ctx
,
2816 struct iovec
**piov
, int *pnum_iov
)
2821 uint8_t *first_hdr
= buf
;
2823 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2825 return NT_STATUS_NO_MEMORY
;
2828 while (taken
< buflen
) {
2831 size_t len
= buflen
- taken
;
2832 uint8_t *hdr
= first_hdr
+ taken
;
2835 size_t next_command_ofs
;
2837 struct iovec
*iov_tmp
;
2840 DEBUG(10, ("%d bytes left, expected at least %d\n",
2844 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2845 struct smbXcli_session
*s
;
2847 struct iovec tf_iov
[2];
2850 if (len
< SMB2_TF_HDR_SIZE
) {
2851 DEBUG(10, ("%d bytes left, expected at least %d\n",
2852 (int)len
, SMB2_TF_HDR_SIZE
));
2856 tf_len
= SMB2_TF_HDR_SIZE
;
2859 hdr
= first_hdr
+ taken
;
2860 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
2861 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
2864 for (; s
; s
= s
->next
) {
2865 if (s
->smb2
.session_id
!= uid
) {
2872 DEBUG(10, ("unknown session_id %llu\n",
2873 (unsigned long long)uid
));
2877 tf_iov
[0].iov_base
= (void *)tf
;
2878 tf_iov
[0].iov_len
= tf_len
;
2879 tf_iov
[1].iov_base
= (void *)hdr
;
2880 tf_iov
[1].iov_len
= len
;
2882 status
= smb2_signing_decrypt_pdu(s
->smb2
.decryption_key
,
2885 if (!NT_STATUS_IS_OK(status
)) {
2892 * We need the header plus the body length field
2895 if (len
< SMB2_HDR_BODY
+ 2) {
2896 DEBUG(10, ("%d bytes left, expected at least %d\n",
2897 (int)len
, SMB2_HDR_BODY
));
2900 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
2901 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
2905 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
2906 DEBUG(10, ("Got HDR len %d, expected %d\n",
2907 SVAL(hdr
, 4), SMB2_HDR_BODY
));
2912 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
2913 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
2915 if (next_command_ofs
!= 0) {
2916 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
2919 if (next_command_ofs
> full_size
) {
2922 if (tf
&& next_command_ofs
< len
) {
2925 full_size
= next_command_ofs
;
2927 if (body_size
< 2) {
2930 body_size
&= 0xfffe;
2932 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
2936 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2938 if (iov_tmp
== NULL
) {
2940 return NT_STATUS_NO_MEMORY
;
2943 cur
= &iov
[num_iov
];
2946 cur
[0].iov_base
= tf
;
2947 cur
[0].iov_len
= tf_len
;
2948 cur
[1].iov_base
= hdr
;
2949 cur
[1].iov_len
= SMB2_HDR_BODY
;
2950 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
2951 cur
[2].iov_len
= body_size
;
2952 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
2953 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
2959 *pnum_iov
= num_iov
;
2960 return NT_STATUS_OK
;
2964 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2967 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
2970 size_t num_pending
= talloc_array_length(conn
->pending
);
2973 for (i
=0; i
<num_pending
; i
++) {
2974 struct tevent_req
*req
= conn
->pending
[i
];
2975 struct smbXcli_req_state
*state
=
2976 tevent_req_data(req
,
2977 struct smbXcli_req_state
);
2979 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
2986 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2987 TALLOC_CTX
*tmp_mem
,
2990 struct tevent_req
*req
;
2991 struct smbXcli_req_state
*state
= NULL
;
2996 struct smbXcli_session
*last_session
= NULL
;
2997 size_t inbuf_len
= smb_len_tcp(inbuf
);
2999 status
= smb2cli_inbuf_parse_compound(conn
,
3000 inbuf
+ NBT_HDR_SIZE
,
3004 if (!NT_STATUS_IS_OK(status
)) {
3008 for (i
=0; i
<num_iov
; i
+=4) {
3009 uint8_t *inbuf_ref
= NULL
;
3010 struct iovec
*cur
= &iov
[i
];
3011 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3012 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3013 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3014 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3015 uint16_t req_opcode
;
3017 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3018 uint32_t new_credits
;
3019 struct smbXcli_session
*session
= NULL
;
3020 const DATA_BLOB
*signing_key
= NULL
;
3022 new_credits
= conn
->smb2
.cur_credits
;
3023 new_credits
+= credits
;
3024 if (new_credits
> UINT16_MAX
) {
3025 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3027 conn
->smb2
.cur_credits
+= credits
;
3029 req
= smb2cli_conn_find_pending(conn
, mid
);
3031 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3033 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3035 state
->smb2
.got_async
= false;
3037 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3038 if (opcode
!= req_opcode
) {
3039 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3041 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3043 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3044 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3047 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3048 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3049 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3050 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3053 * async interim responses are not signed,
3054 * even if the SMB2_HDR_FLAG_SIGNED flag
3057 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
3058 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
3059 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
3061 if (state
->smb2
.notify_async
) {
3062 state
->smb2
.got_async
= true;
3063 tevent_req_defer_callback(req
, state
->ev
);
3064 tevent_req_notify_callback(req
);
3069 session
= state
->session
;
3070 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3071 session
= last_session
;
3073 last_session
= session
;
3075 if (state
->smb2
.should_sign
) {
3076 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3077 return NT_STATUS_ACCESS_DENIED
;
3081 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3082 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3084 if (session
== NULL
) {
3085 struct smbXcli_session
*s
;
3087 s
= state
->conn
->sessions
;
3088 for (; s
; s
= s
->next
) {
3089 if (s
->smb2
.session_id
!= uid
) {
3098 if (session
== NULL
) {
3099 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3102 last_session
= session
;
3103 signing_key
= &session
->smb2
.channel_signing_key
;
3106 if (opcode
== SMB2_OP_SESSSETUP
) {
3108 * We prefer the channel signing key, if it is
3111 * If we do not have a channel signing key yet,
3112 * we try the main signing key, if it is not
3113 * the final response.
3115 if (signing_key
&& signing_key
->length
== 0 &&
3116 !NT_STATUS_IS_OK(status
)) {
3117 signing_key
= &session
->smb2
.signing_key
;
3120 if (signing_key
&& signing_key
->length
== 0) {
3122 * If we do not have a session key to
3123 * verify the signature, we defer the
3124 * signing check to the caller.
3126 * The caller gets NT_STATUS_OK, it
3128 * smb2cli_session_set_session_key()
3130 * smb2cli_session_set_channel_key()
3131 * which will check the signature
3132 * with the channel signing key.
3138 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3140 * if the server returns NT_STATUS_USER_SESSION_DELETED
3141 * the response is not signed and we should
3142 * propagate the NT_STATUS_USER_SESSION_DELETED
3143 * status to the caller.
3146 } else if (state
->smb2
.should_encrypt
) {
3147 if (cur
[0].iov_len
!= SMB2_TF_HDR_SIZE
) {
3148 return NT_STATUS_ACCESS_DENIED
;
3152 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3153 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3154 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3156 * if the server returns
3157 * NT_STATUS_NETWORK_NAME_DELETED
3158 * NT_STATUS_FILE_CLOSED
3159 * NT_STATUS_INVALID_PARAMETER
3160 * the response might not be signed
3161 * as this happens before the signing checks.
3163 * If server echos the signature (or all zeros)
3164 * we should report the status from the server
3170 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3171 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3174 state
->smb2
.signing_skipped
= true;
3180 static const uint8_t zeros
[16];
3182 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3186 state
->smb2
.signing_skipped
= true;
3193 status
= smb2_signing_check_pdu(*signing_key
,
3194 state
->conn
->protocol
,
3196 if (!NT_STATUS_IS_OK(status
)) {
3198 * If the signing check fails, we disconnect
3205 smbXcli_req_unset_pending(req
);
3208 * There might be more than one response
3209 * we need to defer the notifications
3211 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3216 tevent_req_defer_callback(req
, state
->ev
);
3220 * Note: here we use talloc_reference() in a way
3221 * that does not expose it to the caller.
3223 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3224 if (tevent_req_nomem(inbuf_ref
, req
)) {
3228 /* copy the related buffers */
3229 state
->smb2
.recv_iov
[0] = cur
[1];
3230 state
->smb2
.recv_iov
[1] = cur
[2];
3231 state
->smb2
.recv_iov
[2] = cur
[3];
3233 tevent_req_done(req
);
3237 return NT_STATUS_RETRY
;
3240 return NT_STATUS_OK
;
3243 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3244 struct iovec
**piov
,
3245 const struct smb2cli_req_expected_response
*expected
,
3246 size_t num_expected
)
3248 struct smbXcli_req_state
*state
=
3249 tevent_req_data(req
,
3250 struct smbXcli_req_state
);
3253 bool found_status
= false;
3254 bool found_size
= false;
3261 if (state
->smb2
.got_async
) {
3262 return STATUS_PENDING
;
3265 if (tevent_req_is_nterror(req
, &status
)) {
3266 for (i
=0; i
< num_expected
; i
++) {
3267 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3268 found_status
= true;
3274 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3280 if (num_expected
== 0) {
3281 found_status
= true;
3285 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3286 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3288 for (i
=0; i
< num_expected
; i
++) {
3289 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3293 found_status
= true;
3294 if (expected
[i
].body_size
== 0) {
3299 if (expected
[i
].body_size
== body_size
) {
3305 if (!found_status
) {
3309 if (state
->smb2
.signing_skipped
) {
3310 if (num_expected
> 0) {
3311 return NT_STATUS_ACCESS_DENIED
;
3313 if (!NT_STATUS_IS_ERR(status
)) {
3314 return NT_STATUS_ACCESS_DENIED
;
3319 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3323 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3329 static const struct {
3330 enum protocol_types proto
;
3331 const char *smb1_name
;
3332 } smb1cli_prots
[] = {
3333 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3334 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3335 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3336 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3337 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3338 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3339 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3340 {PROTOCOL_LANMAN2
, "Samba"},
3341 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3342 {PROTOCOL_NT1
, "NT LM 0.12"},
3343 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3344 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3347 static const struct {
3348 enum protocol_types proto
;
3349 uint16_t smb2_dialect
;
3350 } smb2cli_prots
[] = {
3351 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3352 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3353 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3354 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3355 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3358 struct smbXcli_negprot_state
{
3359 struct smbXcli_conn
*conn
;
3360 struct tevent_context
*ev
;
3361 uint32_t timeout_msec
;
3362 enum protocol_types min_protocol
;
3363 enum protocol_types max_protocol
;
3367 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3371 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3372 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3373 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3374 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3375 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3376 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3380 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3381 struct tevent_context
*ev
,
3382 struct smbXcli_conn
*conn
,
3383 uint32_t timeout_msec
,
3384 enum protocol_types min_protocol
,
3385 enum protocol_types max_protocol
)
3387 struct tevent_req
*req
, *subreq
;
3388 struct smbXcli_negprot_state
*state
;
3390 req
= tevent_req_create(mem_ctx
, &state
,
3391 struct smbXcli_negprot_state
);
3397 state
->timeout_msec
= timeout_msec
;
3398 state
->min_protocol
= min_protocol
;
3399 state
->max_protocol
= max_protocol
;
3401 if (min_protocol
== PROTOCOL_NONE
) {
3402 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3403 return tevent_req_post(req
, ev
);
3406 if (max_protocol
== PROTOCOL_NONE
) {
3407 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3408 return tevent_req_post(req
, ev
);
3411 if (min_protocol
> max_protocol
) {
3412 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3413 return tevent_req_post(req
, ev
);
3416 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3417 (max_protocol
< PROTOCOL_SMB2_02
)) {
3421 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3423 subreq
= smbXcli_negprot_smb1_subreq(state
);
3424 if (tevent_req_nomem(subreq
, req
)) {
3425 return tevent_req_post(req
, ev
);
3427 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3431 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3432 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3436 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3438 subreq
= smbXcli_negprot_smb2_subreq(state
);
3439 if (tevent_req_nomem(subreq
, req
)) {
3440 return tevent_req_post(req
, ev
);
3442 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3447 * We send an SMB1 negprot with the SMB2 dialects
3448 * and expect a SMB1 or a SMB2 response.
3450 * smbXcli_negprot_dispatch_incoming() will fix the
3451 * callback to match protocol of the response.
3453 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3455 subreq
= smbXcli_negprot_smb1_subreq(state
);
3456 if (tevent_req_nomem(subreq
, req
)) {
3457 return tevent_req_post(req
, ev
);
3459 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3463 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3465 struct tevent_req
*req
=
3466 tevent_req_callback_data(subreq
,
3471 * we just want the low level error
3473 status
= tevent_req_simple_recv_ntstatus(subreq
);
3474 TALLOC_FREE(subreq
);
3475 if (tevent_req_nterror(req
, status
)) {
3479 /* this should never happen */
3480 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3483 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3486 DATA_BLOB bytes
= data_blob_null
;
3490 /* setup the protocol strings */
3491 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3495 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3499 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3503 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3509 * We now it is already ascii and
3510 * we want NULL termination.
3512 ok
= data_blob_append(state
, &bytes
,
3513 smb1cli_prots
[i
].smb1_name
,
3514 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3520 smb1cli_req_flags(state
->max_protocol
,
3521 state
->conn
->smb1
.client
.capabilities
,
3526 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3530 state
->timeout_msec
,
3531 0xFFFE, 0, 0, /* pid, tid, uid */
3532 0, NULL
, /* wct, vwv */
3533 bytes
.length
, bytes
.data
);
3536 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3538 struct tevent_req
*req
=
3539 tevent_req_callback_data(subreq
,
3541 struct smbXcli_negprot_state
*state
=
3542 tevent_req_data(req
,
3543 struct smbXcli_negprot_state
);
3544 struct smbXcli_conn
*conn
= state
->conn
;
3545 struct iovec
*recv_iov
= NULL
;
3554 size_t num_prots
= 0;
3556 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3557 uint32_t both_capabilities
;
3558 uint32_t server_capabilities
= 0;
3559 uint32_t capabilities
;
3560 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3561 uint32_t server_max_xmit
= 0;
3563 uint32_t server_max_mux
= 0;
3564 uint16_t server_security_mode
= 0;
3565 uint32_t server_session_key
= 0;
3566 bool server_readbraw
= false;
3567 bool server_writebraw
= false;
3568 bool server_lockread
= false;
3569 bool server_writeunlock
= false;
3570 struct GUID server_guid
= GUID_zero();
3571 DATA_BLOB server_gss_blob
= data_blob_null
;
3572 uint8_t server_challenge
[8];
3573 char *server_workgroup
= NULL
;
3574 char *server_name
= NULL
;
3575 int server_time_zone
= 0;
3576 NTTIME server_system_time
= 0;
3577 static const struct smb1cli_req_expected_response expected
[] = {
3579 .status
= NT_STATUS_OK
,
3580 .wct
= 0x11, /* NT1 */
3583 .status
= NT_STATUS_OK
,
3584 .wct
= 0x0D, /* LM */
3587 .status
= NT_STATUS_OK
,
3588 .wct
= 0x01, /* CORE */
3592 ZERO_STRUCT(server_challenge
);
3594 status
= smb1cli_req_recv(subreq
, state
,
3599 NULL
, /* pvwv_offset */
3602 NULL
, /* pbytes_offset */
3604 expected
, ARRAY_SIZE(expected
));
3605 TALLOC_FREE(subreq
);
3606 if (tevent_req_nterror(req
, status
)) {
3610 flags
= CVAL(inhdr
, HDR_FLG
);
3612 protnum
= SVAL(vwv
, 0);
3614 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3615 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3619 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3623 if (protnum
!= num_prots
) {
3628 conn
->protocol
= smb1cli_prots
[i
].proto
;
3632 if (conn
->protocol
== PROTOCOL_NONE
) {
3633 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3637 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3638 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3639 "and the selected protocol level doesn't support it.\n"));
3640 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3644 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3645 server_lockread
= true;
3646 server_writeunlock
= true;
3649 if (conn
->protocol
>= PROTOCOL_NT1
) {
3650 const char *client_signing
= NULL
;
3651 bool server_mandatory
= false;
3652 bool server_allowed
= false;
3653 const char *server_signing
= NULL
;
3658 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3663 server_security_mode
= CVAL(vwv
+ 1, 0);
3664 server_max_mux
= SVAL(vwv
+ 1, 1);
3665 server_max_xmit
= IVAL(vwv
+ 3, 1);
3666 server_session_key
= IVAL(vwv
+ 7, 1);
3667 server_time_zone
= SVALS(vwv
+ 15, 1);
3668 server_time_zone
*= 60;
3669 /* this time arrives in real GMT */
3670 server_system_time
= BVAL(vwv
+ 11, 1);
3671 server_capabilities
= IVAL(vwv
+ 9, 1);
3673 key_len
= CVAL(vwv
+ 16, 1);
3675 if (server_capabilities
& CAP_RAW_MODE
) {
3676 server_readbraw
= true;
3677 server_writebraw
= true;
3679 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3680 server_lockread
= true;
3683 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3684 DATA_BLOB blob1
, blob2
;
3686 if (num_bytes
< 16) {
3687 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3691 blob1
= data_blob_const(bytes
, 16);
3692 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3693 if (tevent_req_nterror(req
, status
)) {
3697 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3698 blob2
= data_blob_dup_talloc(state
, blob1
);
3699 if (blob1
.length
> 0 &&
3700 tevent_req_nomem(blob2
.data
, req
)) {
3703 server_gss_blob
= blob2
;
3705 DATA_BLOB blob1
, blob2
;
3707 if (num_bytes
< key_len
) {
3708 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3712 if (key_len
!= 0 && key_len
!= 8) {
3713 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3718 memcpy(server_challenge
, bytes
, 8);
3721 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3722 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3723 if (blob1
.length
> 0) {
3726 len
= utf16_len_n(blob1
.data
,
3730 ok
= convert_string_talloc(state
,
3738 status
= map_nt_error_from_unix_common(errno
);
3739 tevent_req_nterror(req
, status
);
3744 blob2
.data
+= blob1
.length
;
3745 blob2
.length
-= blob1
.length
;
3746 if (blob2
.length
> 0) {
3749 len
= utf16_len_n(blob1
.data
,
3753 ok
= convert_string_talloc(state
,
3761 status
= map_nt_error_from_unix_common(errno
);
3762 tevent_req_nterror(req
, status
);
3768 client_signing
= "disabled";
3769 if (conn
->allow_signing
) {
3770 client_signing
= "allowed";
3772 if (conn
->mandatory_signing
) {
3773 client_signing
= "required";
3776 server_signing
= "not supported";
3777 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3778 server_signing
= "supported";
3779 server_allowed
= true;
3781 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3782 server_signing
= "required";
3783 server_mandatory
= true;
3786 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3790 DEBUG(1,("cli_negprot: SMB signing is required, "
3791 "but client[%s] and server[%s] mismatch\n",
3792 client_signing
, server_signing
));
3793 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3797 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3803 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3807 server_security_mode
= SVAL(vwv
+ 1, 0);
3808 server_max_xmit
= SVAL(vwv
+ 2, 0);
3809 server_max_mux
= SVAL(vwv
+ 3, 0);
3810 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3811 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3812 server_session_key
= IVAL(vwv
+ 6, 0);
3813 server_time_zone
= SVALS(vwv
+ 10, 0);
3814 server_time_zone
*= 60;
3815 /* this time is converted to GMT by make_unix_date */
3816 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3817 unix_to_nt_time(&server_system_time
, t
);
3818 key_len
= SVAL(vwv
+ 11, 0);
3820 if (num_bytes
< key_len
) {
3821 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3825 if (key_len
!= 0 && key_len
!= 8) {
3826 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3831 memcpy(server_challenge
, bytes
, 8);
3834 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3835 if (blob1
.length
> 0) {
3839 len
= utf16_len_n(blob1
.data
,
3843 ok
= convert_string_talloc(state
,
3851 status
= map_nt_error_from_unix_common(errno
);
3852 tevent_req_nterror(req
, status
);
3858 /* the old core protocol */
3859 server_time_zone
= get_time_zone(time(NULL
));
3860 server_max_xmit
= 1024;
3864 if (server_max_xmit
< 1024) {
3865 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3869 if (server_max_mux
< 1) {
3870 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3875 * Now calculate the negotiated capabilities
3876 * based on the mask for:
3877 * - client only flags
3878 * - flags used in both directions
3879 * - server only flags
3881 both_capabilities
= client_capabilities
& server_capabilities
;
3882 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
3883 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
3884 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
3886 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
3888 conn
->smb1
.server
.capabilities
= server_capabilities
;
3889 conn
->smb1
.capabilities
= capabilities
;
3891 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
3892 conn
->smb1
.max_xmit
= max_xmit
;
3894 conn
->smb1
.server
.max_mux
= server_max_mux
;
3896 conn
->smb1
.server
.security_mode
= server_security_mode
;
3898 conn
->smb1
.server
.readbraw
= server_readbraw
;
3899 conn
->smb1
.server
.writebraw
= server_writebraw
;
3900 conn
->smb1
.server
.lockread
= server_lockread
;
3901 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
3903 conn
->smb1
.server
.session_key
= server_session_key
;
3905 talloc_steal(conn
, server_gss_blob
.data
);
3906 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
3907 conn
->smb1
.server
.guid
= server_guid
;
3908 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
3909 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
3910 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
3912 conn
->smb1
.server
.time_zone
= server_time_zone
;
3913 conn
->smb1
.server
.system_time
= server_system_time
;
3915 tevent_req_done(req
);
3918 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
3922 uint16_t dialect_count
= 0;
3924 buf
= state
->smb2
.dyn
;
3925 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3926 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3930 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3934 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
3938 buf
= state
->smb2
.fixed
;
3940 SSVAL(buf
, 2, dialect_count
);
3941 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
3942 SSVAL(buf
, 6, 0); /* Reserved */
3943 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
3944 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
3946 SIVAL(buf
, 8, 0); /* Capabilities */
3948 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
3952 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
3954 if (!NT_STATUS_IS_OK(status
)) {
3957 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
3959 memset(buf
+12, 0, 16); /* ClientGuid */
3961 SBVAL(buf
, 28, 0); /* ClientStartTime */
3963 return smb2cli_req_send(state
, state
->ev
,
3964 state
->conn
, SMB2_OP_NEGPROT
,
3966 state
->timeout_msec
,
3967 0xFEFF, 0, NULL
, /* pid, tid, session */
3968 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
3969 state
->smb2
.dyn
, dialect_count
*2);
3972 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
3974 struct tevent_req
*req
=
3975 tevent_req_callback_data(subreq
,
3977 struct smbXcli_negprot_state
*state
=
3978 tevent_req_data(req
,
3979 struct smbXcli_negprot_state
);
3980 struct smbXcli_conn
*conn
= state
->conn
;
3981 size_t security_offset
, security_length
;
3987 uint16_t dialect_revision
;
3988 static const struct smb2cli_req_expected_response expected
[] = {
3990 .status
= NT_STATUS_OK
,
3995 status
= smb2cli_req_recv(subreq
, state
, &iov
,
3996 expected
, ARRAY_SIZE(expected
));
3997 TALLOC_FREE(subreq
);
3998 if (tevent_req_nterror(req
, status
)) {
4002 body
= (uint8_t *)iov
[1].iov_base
;
4004 dialect_revision
= SVAL(body
, 4);
4006 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4007 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4011 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4015 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4019 conn
->protocol
= smb2cli_prots
[i
].proto
;
4023 if (conn
->protocol
== PROTOCOL_NONE
) {
4024 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
4025 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4029 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4030 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4034 /* make sure we do not loop forever */
4035 state
->min_protocol
= PROTOCOL_SMB2_02
;
4038 * send a SMB2 negprot, in order to negotiate
4041 subreq
= smbXcli_negprot_smb2_subreq(state
);
4042 if (tevent_req_nomem(subreq
, req
)) {
4045 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4049 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4051 blob
= data_blob_const(body
+ 8, 16);
4052 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4053 if (tevent_req_nterror(req
, status
)) {
4057 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4058 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4059 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4060 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4061 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4062 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4064 security_offset
= SVAL(body
, 56);
4065 security_length
= SVAL(body
, 58);
4067 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4068 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4072 if (security_length
> iov
[2].iov_len
) {
4073 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4077 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4080 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4084 tevent_req_done(req
);
4087 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4088 TALLOC_CTX
*tmp_mem
,
4091 size_t num_pending
= talloc_array_length(conn
->pending
);
4092 struct tevent_req
*subreq
;
4093 struct smbXcli_req_state
*substate
;
4094 struct tevent_req
*req
;
4095 uint32_t protocol_magic
;
4096 size_t inbuf_len
= smb_len_nbt(inbuf
);
4098 if (num_pending
!= 1) {
4099 return NT_STATUS_INTERNAL_ERROR
;
4102 if (inbuf_len
< 4) {
4103 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4106 subreq
= conn
->pending
[0];
4107 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4108 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4110 protocol_magic
= IVAL(inbuf
, 4);
4112 switch (protocol_magic
) {
4114 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4115 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4116 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4119 if (substate
->smb2
.recv_iov
== NULL
) {
4121 * For the SMB1 negprot we have move it.
4123 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4124 substate
->smb1
.recv_iov
= NULL
;
4128 * we got an SMB2 answer, which consumed sequence number 0
4129 * so we need to use 1 as the next one
4132 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4133 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4134 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4137 DEBUG(10, ("Got non-SMB PDU\n"));
4138 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4141 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4143 return tevent_req_simple_recv_ntstatus(req
);
4146 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4147 uint32_t timeout_msec
,
4148 enum protocol_types min_protocol
,
4149 enum protocol_types max_protocol
)
4151 TALLOC_CTX
*frame
= talloc_stackframe();
4152 struct tevent_context
*ev
;
4153 struct tevent_req
*req
;
4154 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4157 if (smbXcli_conn_has_async_calls(conn
)) {
4159 * Can't use sync call while an async call is in flight
4161 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4164 ev
= tevent_context_init(frame
);
4168 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4169 min_protocol
, max_protocol
);
4173 ok
= tevent_req_poll(req
, ev
);
4175 status
= map_nt_error_from_unix_common(errno
);
4178 status
= smbXcli_negprot_recv(req
);
4184 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4186 if (session
->conn
== NULL
) {
4190 DLIST_REMOVE(session
->conn
->sessions
, session
);
4194 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4195 struct smbXcli_conn
*conn
)
4197 struct smbXcli_session
*session
;
4199 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4200 if (session
== NULL
) {
4203 talloc_set_destructor(session
, smbXcli_session_destructor
);
4205 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4206 session
->conn
= conn
;
4211 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4213 struct smbXcli_conn
*conn
= session
->conn
;
4214 uint8_t security_mode
= 0;
4217 return security_mode
;
4220 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4221 if (conn
->mandatory_signing
) {
4222 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4225 return security_mode
;
4228 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4230 return session
->smb2
.session_id
;
4233 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4235 return session
->smb2
.session_flags
;
4238 NTSTATUS
smb2cli_session_application_key(struct smbXcli_session
*session
,
4239 TALLOC_CTX
*mem_ctx
,
4242 *key
= data_blob_null
;
4244 if (session
->smb2
.application_key
.length
== 0) {
4245 return NT_STATUS_NO_USER_SESSION_KEY
;
4248 *key
= data_blob_dup_talloc(mem_ctx
, session
->smb2
.application_key
);
4249 if (key
->data
== NULL
) {
4250 return NT_STATUS_NO_MEMORY
;
4253 return NT_STATUS_OK
;
4256 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4257 uint64_t session_id
,
4258 uint16_t session_flags
)
4260 session
->smb2
.session_id
= session_id
;
4261 session
->smb2
.session_flags
= session_flags
;
4264 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4265 const DATA_BLOB _session_key
,
4266 const struct iovec
*recv_iov
)
4268 struct smbXcli_conn
*conn
= session
->conn
;
4269 uint16_t no_sign_flags
;
4270 uint8_t session_key
[16];
4274 return NT_STATUS_INVALID_PARAMETER_MIX
;
4277 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4279 if (session
->smb2
.session_flags
& no_sign_flags
) {
4280 session
->smb2
.should_sign
= false;
4281 return NT_STATUS_OK
;
4284 if (session
->smb2
.signing_key
.length
!= 0) {
4285 return NT_STATUS_INVALID_PARAMETER_MIX
;
4288 ZERO_STRUCT(session_key
);
4289 memcpy(session_key
, _session_key
.data
,
4290 MIN(_session_key
.length
, sizeof(session_key
)));
4292 session
->smb2
.signing_key
= data_blob_talloc(session
,
4294 sizeof(session_key
));
4295 if (session
->smb2
.signing_key
.data
== NULL
) {
4296 ZERO_STRUCT(session_key
);
4297 return NT_STATUS_NO_MEMORY
;
4300 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4301 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4302 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4304 smb2_key_derivation(session_key
, sizeof(session_key
),
4305 label
.data
, label
.length
,
4306 context
.data
, context
.length
,
4307 session
->smb2
.signing_key
.data
);
4310 session
->smb2
.encryption_key
= data_blob_dup_talloc(session
,
4311 session
->smb2
.signing_key
);
4312 if (session
->smb2
.encryption_key
.data
== NULL
) {
4313 ZERO_STRUCT(session_key
);
4314 return NT_STATUS_NO_MEMORY
;
4317 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4318 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4319 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4321 smb2_key_derivation(session_key
, sizeof(session_key
),
4322 label
.data
, label
.length
,
4323 context
.data
, context
.length
,
4324 session
->smb2
.encryption_key
.data
);
4327 session
->smb2
.decryption_key
= data_blob_dup_talloc(session
,
4328 session
->smb2
.signing_key
);
4329 if (session
->smb2
.decryption_key
.data
== NULL
) {
4330 ZERO_STRUCT(session_key
);
4331 return NT_STATUS_NO_MEMORY
;
4334 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4335 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4336 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4338 smb2_key_derivation(session_key
, sizeof(session_key
),
4339 label
.data
, label
.length
,
4340 context
.data
, context
.length
,
4341 session
->smb2
.decryption_key
.data
);
4344 session
->smb2
.application_key
= data_blob_dup_talloc(session
,
4345 session
->smb2
.signing_key
);
4346 if (session
->smb2
.application_key
.data
== NULL
) {
4347 ZERO_STRUCT(session_key
);
4348 return NT_STATUS_NO_MEMORY
;
4351 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4352 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4353 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4355 smb2_key_derivation(session_key
, sizeof(session_key
),
4356 label
.data
, label
.length
,
4357 context
.data
, context
.length
,
4358 session
->smb2
.application_key
.data
);
4360 ZERO_STRUCT(session_key
);
4362 session
->smb2
.channel_signing_key
= data_blob_dup_talloc(session
,
4363 session
->smb2
.signing_key
);
4364 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4365 return NT_STATUS_NO_MEMORY
;
4368 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4369 session
->conn
->protocol
,
4371 if (!NT_STATUS_IS_OK(status
)) {
4375 session
->smb2
.should_sign
= false;
4376 session
->smb2
.should_encrypt
= false;
4378 if (conn
->desire_signing
) {
4379 session
->smb2
.should_sign
= true;
4382 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4383 session
->smb2
.should_sign
= true;
4386 if (session
->smb2
.session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
4387 session
->smb2
.should_encrypt
= true;
4390 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
4391 session
->smb2
.should_encrypt
= false;
4394 if (!(conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
4395 session
->smb2
.should_encrypt
= false;
4398 generate_random_buffer((uint8_t *)&session
->smb2
.channel_nonce
,
4399 sizeof(session
->smb2
.channel_nonce
));
4400 session
->smb2
.channel_next
= 1;
4402 return NT_STATUS_OK
;
4405 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4406 struct smbXcli_session
*session1
,
4407 struct smbXcli_conn
*conn
,
4408 struct smbXcli_session
**_session2
)
4410 struct smbXcli_session
*session2
;
4412 if (session1
->smb2
.signing_key
.length
== 0) {
4413 return NT_STATUS_INVALID_PARAMETER_MIX
;
4416 if (session1
->smb2
.channel_next
== 0) {
4417 return NT_STATUS_INVALID_PARAMETER_MIX
;
4421 return NT_STATUS_INVALID_PARAMETER_MIX
;
4424 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4425 if (session2
== NULL
) {
4426 return NT_STATUS_NO_MEMORY
;
4428 session2
->smb2
.session_id
= session1
->smb2
.session_id
;
4429 session2
->smb2
.session_flags
= session1
->smb2
.session_flags
;
4431 session2
->smb2
.signing_key
= data_blob_dup_talloc(session2
,
4432 session1
->smb2
.signing_key
);
4433 if (session2
->smb2
.signing_key
.data
== NULL
) {
4434 return NT_STATUS_NO_MEMORY
;
4437 session2
->smb2
.application_key
= data_blob_dup_talloc(session2
,
4438 session1
->smb2
.application_key
);
4439 if (session2
->smb2
.application_key
.data
== NULL
) {
4440 return NT_STATUS_NO_MEMORY
;
4443 session2
->smb2
.should_sign
= session1
->smb2
.should_sign
;
4444 session2
->smb2
.should_encrypt
= session1
->smb2
.should_encrypt
;
4446 session2
->smb2
.channel_nonce
= session1
->smb2
.channel_nonce
;
4447 session2
->smb2
.channel_nonce
+= session1
->smb2
.channel_next
;
4448 session1
->smb2
.channel_next
++;
4450 session2
->smb2
.encryption_key
= data_blob_dup_talloc(session2
,
4451 session1
->smb2
.encryption_key
);
4452 if (session2
->smb2
.encryption_key
.data
== NULL
) {
4453 return NT_STATUS_NO_MEMORY
;
4456 session2
->smb2
.decryption_key
= data_blob_dup_talloc(session2
,
4457 session1
->smb2
.decryption_key
);
4458 if (session2
->smb2
.decryption_key
.data
== NULL
) {
4459 return NT_STATUS_NO_MEMORY
;
4462 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4463 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4464 session2
->conn
= conn
;
4466 *_session2
= session2
;
4467 return NT_STATUS_OK
;
4470 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4471 const DATA_BLOB _channel_key
,
4472 const struct iovec
*recv_iov
)
4474 struct smbXcli_conn
*conn
= session
->conn
;
4475 uint8_t channel_key
[16];
4479 return NT_STATUS_INVALID_PARAMETER_MIX
;
4482 if (session
->smb2
.channel_signing_key
.length
!= 0) {
4483 return NT_STATUS_INVALID_PARAMETER_MIX
;
4486 ZERO_STRUCT(channel_key
);
4487 memcpy(channel_key
, _channel_key
.data
,
4488 MIN(_channel_key
.length
, sizeof(channel_key
)));
4490 session
->smb2
.channel_signing_key
= data_blob_talloc(session
,
4492 sizeof(channel_key
));
4493 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4494 ZERO_STRUCT(channel_key
);
4495 return NT_STATUS_NO_MEMORY
;
4498 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4499 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4500 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4502 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4503 label
.data
, label
.length
,
4504 context
.data
, context
.length
,
4505 session
->smb2
.channel_signing_key
.data
);
4507 ZERO_STRUCT(channel_key
);
4509 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4510 session
->conn
->protocol
,
4512 if (!NT_STATUS_IS_OK(status
)) {
4516 return NT_STATUS_OK
;