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
;
43 struct sockaddr_storage local_ss
;
44 struct sockaddr_storage remote_ss
;
45 const char *remote_name
;
47 struct tevent_queue
*outgoing
;
48 struct tevent_req
**pending
;
49 struct tevent_req
*read_smb_req
;
51 enum protocol_types protocol
;
54 bool mandatory_signing
;
57 * The incoming dispatch function should return:
58 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
59 * - NT_STATUS_OK, if no more processing is desired, e.g.
60 * the dispatch function called
62 * - All other return values disconnect the connection.
64 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
70 uint32_t capabilities
;
75 uint32_t capabilities
;
78 uint16_t security_mode
;
87 const char *workgroup
;
93 uint32_t capabilities
;
98 struct smb_signing_state
*signing
;
99 struct smb_trans_enc_state
*trans_enc
;
101 struct tevent_req
*read_braw_req
;
106 uint32_t capabilities
;
107 uint16_t security_mode
;
112 uint32_t capabilities
;
113 uint16_t security_mode
;
115 uint32_t max_trans_size
;
116 uint32_t max_read_size
;
117 uint32_t max_write_size
;
124 uint16_t cur_credits
;
125 uint16_t max_credits
;
128 struct smbXcli_session
*sessions
;
131 struct smb2cli_session
{
133 uint16_t session_flags
;
134 DATA_BLOB application_key
;
135 DATA_BLOB signing_key
;
138 DATA_BLOB encryption_key
;
139 DATA_BLOB decryption_key
;
142 uint16_t channel_sequence
;
145 struct smbXcli_session
{
146 struct smbXcli_session
*prev
, *next
;
147 struct smbXcli_conn
*conn
;
151 DATA_BLOB application_key
;
155 struct smb2cli_session
*smb2
;
158 DATA_BLOB signing_key
;
162 struct smbXcli_tcon
{
165 uint16_t optional_support
;
166 uint32_t maximal_access
;
167 uint32_t guest_maximal_access
;
176 uint32_t capabilities
;
177 uint32_t maximal_access
;
182 struct smbXcli_req_state
{
183 struct tevent_context
*ev
;
184 struct smbXcli_conn
*conn
;
185 struct smbXcli_session
*session
; /* maybe NULL */
186 struct smbXcli_tcon
*tcon
; /* maybe NULL */
188 uint8_t length_hdr
[4];
195 /* Space for the header including the wct */
196 uint8_t hdr
[HDR_VWV
];
199 * For normal requests, smb1cli_req_send chooses a mid.
200 * SecondaryV trans requests need to use the mid of the primary
201 * request, so we need a place to store it.
202 * Assume it is set if != 0.
207 uint8_t bytecount_buf
[2];
209 #define MAX_SMB_IOV 10
210 /* length_hdr, hdr, words, byte_count, buffers */
211 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
216 struct tevent_req
**chained_requests
;
219 NTSTATUS recv_status
;
220 /* always an array of 3 talloc elements */
221 struct iovec
*recv_iov
;
225 const uint8_t *fixed
;
230 uint8_t transform
[SMB2_TF_HDR_SIZE
];
231 uint8_t hdr
[SMB2_HDR_BODY
];
232 uint8_t pad
[7]; /* padding space for compounding */
235 * always an array of 3 talloc elements
236 * (without a SMB2_TRANSFORM header!)
240 struct iovec
*recv_iov
;
242 uint16_t credit_charge
;
247 bool signing_skipped
;
253 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
256 * NT_STATUS_OK, means we do not notify the callers
258 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
260 while (conn
->sessions
) {
261 conn
->sessions
->conn
= NULL
;
262 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
265 if (conn
->smb1
.trans_enc
) {
266 TALLOC_FREE(conn
->smb1
.trans_enc
);
272 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
274 const char *remote_name
,
275 enum smb_signing_setting signing_state
,
276 uint32_t smb1_capabilities
,
277 struct GUID
*client_guid
,
278 uint32_t smb2_capabilities
)
280 struct smbXcli_conn
*conn
= NULL
;
282 struct sockaddr
*sa
= NULL
;
286 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
292 conn
->write_fd
= dup(fd
);
293 if (conn
->write_fd
== -1) {
297 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
298 if (conn
->remote_name
== NULL
) {
303 ss
= (void *)&conn
->local_ss
;
304 sa
= (struct sockaddr
*)ss
;
305 sa_length
= sizeof(conn
->local_ss
);
306 ret
= getsockname(fd
, sa
, &sa_length
);
310 ss
= (void *)&conn
->remote_ss
;
311 sa
= (struct sockaddr
*)ss
;
312 sa_length
= sizeof(conn
->remote_ss
);
313 ret
= getpeername(fd
, sa
, &sa_length
);
318 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
319 if (conn
->outgoing
== NULL
) {
322 conn
->pending
= NULL
;
324 conn
->protocol
= PROTOCOL_NONE
;
326 switch (signing_state
) {
327 case SMB_SIGNING_OFF
:
329 conn
->allow_signing
= false;
330 conn
->desire_signing
= false;
331 conn
->mandatory_signing
= false;
333 case SMB_SIGNING_DEFAULT
:
334 case SMB_SIGNING_IF_REQUIRED
:
335 /* if the server requires it */
336 conn
->allow_signing
= true;
337 conn
->desire_signing
= false;
338 conn
->mandatory_signing
= false;
340 case SMB_SIGNING_REQUIRED
:
342 conn
->allow_signing
= true;
343 conn
->desire_signing
= true;
344 conn
->mandatory_signing
= true;
348 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
349 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
351 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
352 conn
->smb1
.max_xmit
= 1024;
356 /* initialise signing */
357 conn
->smb1
.signing
= smb_signing_init(conn
,
359 conn
->desire_signing
,
360 conn
->mandatory_signing
);
361 if (!conn
->smb1
.signing
) {
365 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
366 if (conn
->mandatory_signing
) {
367 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
370 conn
->smb2
.client
.guid
= *client_guid
;
372 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
374 conn
->smb2
.cur_credits
= 1;
375 conn
->smb2
.max_credits
= 0;
377 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
381 if (conn
->write_fd
!= -1) {
382 close(conn
->write_fd
);
388 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
394 if (conn
->read_fd
== -1) {
401 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
403 return conn
->protocol
;
406 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
408 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
412 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
419 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
421 set_socket_options(conn
->read_fd
, options
);
424 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
426 return &conn
->local_ss
;
429 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
431 return &conn
->remote_ss
;
434 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
436 return conn
->remote_name
;
439 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
441 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
448 return conn
->smb1
.server
.max_mux
;
451 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
453 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
454 return conn
->smb2
.server
.system_time
;
457 return conn
->smb1
.server
.system_time
;
460 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
462 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
463 return &conn
->smb2
.server
.gss_blob
;
466 return &conn
->smb1
.server
.gss_blob
;
469 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
471 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
472 return &conn
->smb2
.server
.guid
;
475 return &conn
->smb1
.server
.guid
;
478 struct smbXcli_conn_samba_suicide_state
{
479 struct smbXcli_conn
*conn
;
484 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
486 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
487 struct tevent_context
*ev
,
488 struct smbXcli_conn
*conn
,
491 struct tevent_req
*req
, *subreq
;
492 struct smbXcli_conn_samba_suicide_state
*state
;
494 req
= tevent_req_create(mem_ctx
, &state
,
495 struct smbXcli_conn_samba_suicide_state
);
500 SIVAL(state
->buf
, 4, 0x74697865);
501 SCVAL(state
->buf
, 8, exitcode
);
502 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
504 state
->iov
.iov_base
= state
->buf
;
505 state
->iov
.iov_len
= sizeof(state
->buf
);
507 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
508 false, &state
->iov
, 1);
509 if (tevent_req_nomem(subreq
, req
)) {
510 return tevent_req_post(req
, ev
);
512 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
516 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
518 struct tevent_req
*req
= tevent_req_callback_data(
519 subreq
, struct tevent_req
);
520 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
521 req
, struct smbXcli_conn_samba_suicide_state
);
525 nwritten
= writev_recv(subreq
, &err
);
527 if (nwritten
== -1) {
528 NTSTATUS status
= map_nt_error_from_unix_common(err
);
529 smbXcli_conn_disconnect(state
->conn
, status
);
532 tevent_req_done(req
);
535 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
537 return tevent_req_simple_recv_ntstatus(req
);
540 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
543 TALLOC_CTX
*frame
= talloc_stackframe();
544 struct tevent_context
*ev
;
545 struct tevent_req
*req
;
546 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
549 if (smbXcli_conn_has_async_calls(conn
)) {
551 * Can't use sync call while an async call is in flight
553 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
556 ev
= tevent_context_init(frame
);
560 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
564 ok
= tevent_req_poll(req
, ev
);
566 status
= map_nt_error_from_unix_common(errno
);
569 status
= smbXcli_conn_samba_suicide_recv(req
);
575 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
577 return conn
->smb1
.capabilities
;
580 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
582 return conn
->smb1
.max_xmit
;
585 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
587 return conn
->smb1
.server
.session_key
;
590 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
592 return conn
->smb1
.server
.challenge
;
595 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
597 return conn
->smb1
.server
.security_mode
;
600 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
602 return conn
->smb1
.server
.readbraw
;
605 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
607 return conn
->smb1
.server
.writebraw
;
610 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
612 return conn
->smb1
.server
.lockread
;
615 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
617 return conn
->smb1
.server
.writeunlock
;
620 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
622 return conn
->smb1
.server
.time_zone
;
625 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
626 const DATA_BLOB user_session_key
,
627 const DATA_BLOB response
)
629 return smb_signing_activate(conn
->smb1
.signing
,
634 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
635 const uint8_t *buf
, uint32_t seqnum
)
637 const uint8_t *hdr
= buf
+ NBT_HDR_SIZE
;
638 size_t len
= smb_len_nbt(buf
);
640 return smb_signing_check_pdu(conn
->smb1
.signing
, hdr
, len
, seqnum
);
643 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
645 return smb_signing_is_active(conn
->smb1
.signing
);
648 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
649 struct smb_trans_enc_state
*es
)
651 /* Replace the old state, if any. */
652 if (conn
->smb1
.trans_enc
) {
653 TALLOC_FREE(conn
->smb1
.trans_enc
);
655 conn
->smb1
.trans_enc
= es
;
658 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
660 return common_encryption_on(conn
->smb1
.trans_enc
);
664 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
666 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
667 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
669 if (NT_STATUS_IS_OK(status
)) {
673 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
677 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
681 * Is the SMB command able to hold an AND_X successor
682 * @param[in] cmd The SMB command in question
683 * @retval Can we add a chained request after "cmd"?
685 bool smb1cli_is_andx_req(uint8_t cmd
)
705 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
707 size_t num_pending
= talloc_array_length(conn
->pending
);
713 result
= conn
->smb1
.mid
++;
714 if ((result
== 0) || (result
== 0xffff)) {
718 for (i
=0; i
<num_pending
; i
++) {
719 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
724 if (i
== num_pending
) {
730 void smbXcli_req_unset_pending(struct tevent_req
*req
)
732 struct smbXcli_req_state
*state
=
734 struct smbXcli_req_state
);
735 struct smbXcli_conn
*conn
= state
->conn
;
736 size_t num_pending
= talloc_array_length(conn
->pending
);
739 if (state
->smb1
.mid
!= 0) {
741 * This is a [nt]trans[2] request which waits
742 * for more than one reply.
747 talloc_set_destructor(req
, NULL
);
749 if (num_pending
== 1) {
751 * The pending read_smb tevent_req is a child of
752 * conn->pending. So if nothing is pending anymore, we need to
753 * delete the socket read fde.
755 TALLOC_FREE(conn
->pending
);
756 conn
->read_smb_req
= NULL
;
760 for (i
=0; i
<num_pending
; i
++) {
761 if (req
== conn
->pending
[i
]) {
765 if (i
== num_pending
) {
767 * Something's seriously broken. Just returning here is the
768 * right thing nevertheless, the point of this routine is to
769 * remove ourselves from conn->pending.
775 * Remove ourselves from the conn->pending array
777 for (; i
< (num_pending
- 1); i
++) {
778 conn
->pending
[i
] = conn
->pending
[i
+1];
782 * No NULL check here, we're shrinking by sizeof(void *), and
783 * talloc_realloc just adjusts the size for this.
785 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
790 static int smbXcli_req_destructor(struct tevent_req
*req
)
792 struct smbXcli_req_state
*state
=
794 struct smbXcli_req_state
);
797 * Make sure we really remove it from
798 * the pending array on destruction.
801 smbXcli_req_unset_pending(req
);
805 static bool smb1cli_req_cancel(struct tevent_req
*req
);
806 static bool smb2cli_req_cancel(struct tevent_req
*req
);
808 static bool smbXcli_req_cancel(struct tevent_req
*req
)
810 struct smbXcli_req_state
*state
=
812 struct smbXcli_req_state
);
814 if (!smbXcli_conn_is_connected(state
->conn
)) {
818 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
822 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
823 return smb2cli_req_cancel(req
);
826 return smb1cli_req_cancel(req
);
829 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
831 bool smbXcli_req_set_pending(struct tevent_req
*req
)
833 struct smbXcli_req_state
*state
=
835 struct smbXcli_req_state
);
836 struct smbXcli_conn
*conn
;
837 struct tevent_req
**pending
;
842 if (!smbXcli_conn_is_connected(conn
)) {
846 num_pending
= talloc_array_length(conn
->pending
);
848 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
850 if (pending
== NULL
) {
853 pending
[num_pending
] = req
;
854 conn
->pending
= pending
;
855 talloc_set_destructor(req
, smbXcli_req_destructor
);
856 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
858 if (!smbXcli_conn_receive_next(conn
)) {
860 * the caller should notify the current request
862 * And all other pending requests get notified
863 * by smbXcli_conn_disconnect().
865 smbXcli_req_unset_pending(req
);
866 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
873 static void smbXcli_conn_received(struct tevent_req
*subreq
);
875 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
877 size_t num_pending
= talloc_array_length(conn
->pending
);
878 struct tevent_req
*req
;
879 struct smbXcli_req_state
*state
;
881 if (conn
->read_smb_req
!= NULL
) {
885 if (num_pending
== 0) {
886 if (conn
->smb2
.mid
< UINT64_MAX
) {
887 /* no more pending requests, so we are done for now */
892 * If there are no more SMB2 requests possible,
893 * because we are out of message ids,
894 * we need to disconnect.
896 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
900 req
= conn
->pending
[0];
901 state
= tevent_req_data(req
, struct smbXcli_req_state
);
904 * We're the first ones, add the read_smb request that waits for the
905 * answer from the server
907 conn
->read_smb_req
= read_smb_send(conn
->pending
,
910 if (conn
->read_smb_req
== NULL
) {
913 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
917 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
919 struct smbXcli_session
*session
;
921 tevent_queue_stop(conn
->outgoing
);
923 if (conn
->read_fd
!= -1) {
924 close(conn
->read_fd
);
926 if (conn
->write_fd
!= -1) {
927 close(conn
->write_fd
);
932 session
= conn
->sessions
;
933 if (talloc_array_length(conn
->pending
) == 0) {
935 * if we do not have pending requests
936 * there is no need to update the channel_sequence
940 for (; session
; session
= session
->next
) {
941 smb2cli_session_increment_channel_sequence(session
);
945 * Cancel all pending requests. We do not do a for-loop walking
946 * conn->pending because that array changes in
947 * smbXcli_req_unset_pending.
949 while (talloc_array_length(conn
->pending
) > 0) {
950 struct tevent_req
*req
;
951 struct smbXcli_req_state
*state
;
952 struct tevent_req
**chain
;
956 req
= conn
->pending
[0];
957 state
= tevent_req_data(req
, struct smbXcli_req_state
);
959 if (state
->smb1
.chained_requests
== NULL
) {
961 * We're dead. No point waiting for trans2
966 smbXcli_req_unset_pending(req
);
968 if (NT_STATUS_IS_OK(status
)) {
969 /* do not notify the callers */
974 * we need to defer the callback, because we may notify
975 * more then one caller.
977 tevent_req_defer_callback(req
, state
->ev
);
978 tevent_req_nterror(req
, status
);
982 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
983 num_chained
= talloc_array_length(chain
);
985 for (i
=0; i
<num_chained
; i
++) {
987 state
= tevent_req_data(req
, struct smbXcli_req_state
);
990 * We're dead. No point waiting for trans2
995 smbXcli_req_unset_pending(req
);
997 if (NT_STATUS_IS_OK(status
)) {
998 /* do not notify the callers */
1003 * we need to defer the callback, because we may notify
1004 * more than one caller.
1006 tevent_req_defer_callback(req
, state
->ev
);
1007 tevent_req_nterror(req
, status
);
1014 * Fetch a smb request's mid. Only valid after the request has been sent by
1015 * smb1cli_req_send().
1017 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
1019 struct smbXcli_req_state
*state
=
1020 tevent_req_data(req
,
1021 struct smbXcli_req_state
);
1023 if (state
->smb1
.mid
!= 0) {
1024 return state
->smb1
.mid
;
1027 return SVAL(state
->smb1
.hdr
, HDR_MID
);
1030 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
1032 struct smbXcli_req_state
*state
=
1033 tevent_req_data(req
,
1034 struct smbXcli_req_state
);
1036 state
->smb1
.mid
= mid
;
1039 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
1041 struct smbXcli_req_state
*state
=
1042 tevent_req_data(req
,
1043 struct smbXcli_req_state
);
1045 return state
->smb1
.seqnum
;
1048 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
1050 struct smbXcli_req_state
*state
=
1051 tevent_req_data(req
,
1052 struct smbXcli_req_state
);
1054 state
->smb1
.seqnum
= seqnum
;
1057 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1061 for (i
=0; i
<count
; i
++) {
1062 result
+= iov
[i
].iov_len
;
1067 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1068 const struct iovec
*iov
,
1071 size_t len
= smbXcli_iov_len(iov
, count
);
1076 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1081 for (i
=0; i
<count
; i
++) {
1082 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1083 copied
+= iov
[i
].iov_len
;
1088 static void smb1cli_req_flags(enum protocol_types protocol
,
1089 uint32_t smb1_capabilities
,
1090 uint8_t smb_command
,
1091 uint8_t additional_flags
,
1092 uint8_t clear_flags
,
1094 uint16_t additional_flags2
,
1095 uint16_t clear_flags2
,
1099 uint16_t flags2
= 0;
1101 if (protocol
>= PROTOCOL_LANMAN1
) {
1102 flags
|= FLAG_CASELESS_PATHNAMES
;
1103 flags
|= FLAG_CANONICAL_PATHNAMES
;
1106 if (protocol
>= PROTOCOL_LANMAN2
) {
1107 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1108 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1111 if (protocol
>= PROTOCOL_NT1
) {
1112 flags2
|= FLAGS2_IS_LONG_NAME
;
1114 if (smb1_capabilities
& CAP_UNICODE
) {
1115 flags2
|= FLAGS2_UNICODE_STRINGS
;
1117 if (smb1_capabilities
& CAP_STATUS32
) {
1118 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1120 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1121 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1125 flags
|= additional_flags
;
1126 flags
&= ~clear_flags
;
1127 flags2
|= additional_flags2
;
1128 flags2
&= ~clear_flags2
;
1134 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1136 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1138 struct smbXcli_req_state
*state
=
1139 tevent_req_data(req
,
1140 struct smbXcli_req_state
);
1145 struct tevent_req
*subreq
;
1148 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1149 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1150 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1151 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1152 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1154 subreq
= smb1cli_req_create(state
, state
->ev
,
1164 0, NULL
); /* bytes */
1165 if (subreq
== NULL
) {
1168 smb1cli_req_set_mid(subreq
, mid
);
1170 status
= smb1cli_req_chain_submit(&subreq
, 1);
1171 if (!NT_STATUS_IS_OK(status
)) {
1172 TALLOC_FREE(subreq
);
1175 smb1cli_req_set_mid(subreq
, 0);
1177 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1182 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1184 /* we do not care about the result */
1185 TALLOC_FREE(subreq
);
1188 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1189 struct tevent_context
*ev
,
1190 struct smbXcli_conn
*conn
,
1191 uint8_t smb_command
,
1192 uint8_t additional_flags
,
1193 uint8_t clear_flags
,
1194 uint16_t additional_flags2
,
1195 uint16_t clear_flags2
,
1196 uint32_t timeout_msec
,
1198 struct smbXcli_tcon
*tcon
,
1199 struct smbXcli_session
*session
,
1200 uint8_t wct
, uint16_t *vwv
,
1202 struct iovec
*bytes_iov
)
1204 struct tevent_req
*req
;
1205 struct smbXcli_req_state
*state
;
1207 uint16_t flags2
= 0;
1211 if (iov_count
> MAX_SMB_IOV
) {
1213 * Should not happen :-)
1218 req
= tevent_req_create(mem_ctx
, &state
,
1219 struct smbXcli_req_state
);
1225 state
->session
= session
;
1229 uid
= session
->smb1
.session_id
;
1233 tid
= tcon
->smb1
.tcon_id
;
1236 state
->smb1
.recv_cmd
= 0xFF;
1237 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1238 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1239 if (state
->smb1
.recv_iov
== NULL
) {
1244 smb1cli_req_flags(conn
->protocol
,
1245 conn
->smb1
.capabilities
,
1254 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1255 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1256 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1257 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1258 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1259 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1260 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1261 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1262 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1263 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1264 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1266 state
->smb1
.vwv
= vwv
;
1268 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1270 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1271 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1272 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1273 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1274 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1275 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1276 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1277 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1279 if (iov_count
!= 0) {
1280 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1281 iov_count
* sizeof(*bytes_iov
));
1283 state
->smb1
.iov_count
= iov_count
+ 4;
1285 if (timeout_msec
> 0) {
1286 struct timeval endtime
;
1288 endtime
= timeval_current_ofs_msec(timeout_msec
);
1289 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1294 switch (smb_command
) {
1298 state
->one_way
= true;
1301 state
->one_way
= true;
1302 state
->smb1
.one_way_seqnum
= true;
1306 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1307 state
->one_way
= true;
1315 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1316 struct iovec
*iov
, int iov_count
,
1318 bool one_way_seqnum
)
1320 TALLOC_CTX
*frame
= NULL
;
1324 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1325 * iovec directly. MD5Update would do that just fine.
1328 if (iov_count
< 4) {
1329 return NT_STATUS_INVALID_PARAMETER_MIX
;
1331 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1332 return NT_STATUS_INVALID_PARAMETER_MIX
;
1334 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1335 return NT_STATUS_INVALID_PARAMETER_MIX
;
1337 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1338 return NT_STATUS_INVALID_PARAMETER_MIX
;
1340 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1341 return NT_STATUS_INVALID_PARAMETER_MIX
;
1344 frame
= talloc_stackframe();
1346 buf
= smbXcli_iov_concat(frame
, &iov
[1], iov_count
- 1);
1348 return NT_STATUS_NO_MEMORY
;
1351 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1353 smb_signing_sign_pdu(conn
->smb1
.signing
,
1354 buf
, talloc_get_size(buf
),
1356 memcpy(iov
[1].iov_base
, buf
, iov
[1].iov_len
);
1359 return NT_STATUS_OK
;
1362 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1363 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1364 TALLOC_CTX
*tmp_mem
,
1367 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1368 struct smbXcli_req_state
*state
,
1369 struct iovec
*iov
, int iov_count
)
1371 struct tevent_req
*subreq
;
1376 if (!smbXcli_conn_is_connected(state
->conn
)) {
1377 return NT_STATUS_CONNECTION_DISCONNECTED
;
1380 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1381 return NT_STATUS_REVISION_MISMATCH
;
1384 if (iov_count
< 4) {
1385 return NT_STATUS_INVALID_PARAMETER_MIX
;
1387 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1388 return NT_STATUS_INVALID_PARAMETER_MIX
;
1390 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1391 return NT_STATUS_INVALID_PARAMETER_MIX
;
1393 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1394 return NT_STATUS_INVALID_PARAMETER_MIX
;
1396 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1397 return NT_STATUS_INVALID_PARAMETER_MIX
;
1400 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1401 if (cmd
== SMBreadBraw
) {
1402 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1403 return NT_STATUS_INVALID_PARAMETER_MIX
;
1405 state
->conn
->smb1
.read_braw_req
= req
;
1408 if (state
->smb1
.mid
!= 0) {
1409 mid
= state
->smb1
.mid
;
1411 mid
= smb1cli_alloc_mid(state
->conn
);
1413 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1415 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1417 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1418 &state
->smb1
.seqnum
,
1419 state
->smb1
.one_way_seqnum
);
1421 if (!NT_STATUS_IS_OK(status
)) {
1426 * If we supported multiple encrytion contexts
1427 * here we'd look up based on tid.
1429 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1430 char *buf
, *enc_buf
;
1432 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1434 return NT_STATUS_NO_MEMORY
;
1436 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1437 (char *)buf
, &enc_buf
);
1439 if (!NT_STATUS_IS_OK(status
)) {
1440 DEBUG(0, ("Error in encrypting client message: %s\n",
1441 nt_errstr(status
)));
1444 buf
= (char *)talloc_memdup(state
, enc_buf
,
1445 smb_len_nbt(enc_buf
)+4);
1448 return NT_STATUS_NO_MEMORY
;
1450 iov
[0].iov_base
= (void *)buf
;
1451 iov
[0].iov_len
= talloc_get_size(buf
);
1455 if (state
->conn
->dispatch_incoming
== NULL
) {
1456 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1459 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1461 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1462 state
->conn
->write_fd
, false, iov
, iov_count
);
1463 if (subreq
== NULL
) {
1464 return NT_STATUS_NO_MEMORY
;
1466 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1467 return NT_STATUS_OK
;
1470 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1471 struct tevent_context
*ev
,
1472 struct smbXcli_conn
*conn
,
1473 uint8_t smb_command
,
1474 uint8_t additional_flags
,
1475 uint8_t clear_flags
,
1476 uint16_t additional_flags2
,
1477 uint16_t clear_flags2
,
1478 uint32_t timeout_msec
,
1480 struct smbXcli_tcon
*tcon
,
1481 struct smbXcli_session
*session
,
1482 uint8_t wct
, uint16_t *vwv
,
1484 const uint8_t *bytes
)
1486 struct tevent_req
*req
;
1490 iov
.iov_base
= discard_const_p(void, bytes
);
1491 iov
.iov_len
= num_bytes
;
1493 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1494 additional_flags
, clear_flags
,
1495 additional_flags2
, clear_flags2
,
1502 if (!tevent_req_is_in_progress(req
)) {
1503 return tevent_req_post(req
, ev
);
1505 status
= smb1cli_req_chain_submit(&req
, 1);
1506 if (tevent_req_nterror(req
, status
)) {
1507 return tevent_req_post(req
, ev
);
1512 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1514 struct tevent_req
*req
=
1515 tevent_req_callback_data(subreq
,
1517 struct smbXcli_req_state
*state
=
1518 tevent_req_data(req
,
1519 struct smbXcli_req_state
);
1523 nwritten
= writev_recv(subreq
, &err
);
1524 TALLOC_FREE(subreq
);
1525 if (nwritten
== -1) {
1526 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1527 smbXcli_conn_disconnect(state
->conn
, status
);
1531 if (state
->one_way
) {
1532 state
->inbuf
= NULL
;
1533 tevent_req_done(req
);
1537 if (!smbXcli_req_set_pending(req
)) {
1538 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1543 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1545 struct smbXcli_conn
*conn
=
1546 tevent_req_callback_data(subreq
,
1547 struct smbXcli_conn
);
1548 TALLOC_CTX
*frame
= talloc_stackframe();
1554 if (subreq
!= conn
->read_smb_req
) {
1555 DEBUG(1, ("Internal error: cli_smb_received called with "
1556 "unexpected subreq\n"));
1557 status
= NT_STATUS_INTERNAL_ERROR
;
1558 smbXcli_conn_disconnect(conn
, status
);
1562 conn
->read_smb_req
= NULL
;
1564 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1565 TALLOC_FREE(subreq
);
1566 if (received
== -1) {
1567 status
= map_nt_error_from_unix_common(err
);
1568 smbXcli_conn_disconnect(conn
, status
);
1573 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1575 if (NT_STATUS_IS_OK(status
)) {
1577 * We should not do any more processing
1578 * as the dispatch function called
1579 * tevent_req_done().
1582 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1584 * We got an error, so notify all pending requests
1586 smbXcli_conn_disconnect(conn
, status
);
1591 * We got NT_STATUS_RETRY, so we may ask for a
1592 * next incoming pdu.
1594 if (!smbXcli_conn_receive_next(conn
)) {
1595 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1599 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1600 struct iovec
**piov
, int *pnum_iov
)
1611 buflen
= smb_len_nbt(buf
);
1614 hdr
= buf
+ NBT_HDR_SIZE
;
1616 if (buflen
< MIN_SMB_SIZE
) {
1617 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1621 * This returns iovec elements in the following order:
1636 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1638 return NT_STATUS_NO_MEMORY
;
1640 iov
[0].iov_base
= hdr
;
1641 iov
[0].iov_len
= HDR_WCT
;
1644 cmd
= CVAL(hdr
, HDR_COM
);
1648 size_t len
= buflen
- taken
;
1650 struct iovec
*iov_tmp
;
1657 * we need at least WCT and BCC
1659 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1661 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1662 __location__
, (int)len
, (int)needed
));
1667 * Now we check if the specified words are there
1669 wct
= CVAL(hdr
, wct_ofs
);
1670 needed
+= wct
* sizeof(uint16_t);
1672 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1673 __location__
, (int)len
, (int)needed
));
1678 * Now we check if the specified bytes are there
1680 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1681 bcc
= SVAL(hdr
, bcc_ofs
);
1682 needed
+= bcc
* sizeof(uint8_t);
1684 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1685 __location__
, (int)len
, (int)needed
));
1690 * we allocate 2 iovec structures for words and bytes
1692 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1694 if (iov_tmp
== NULL
) {
1696 return NT_STATUS_NO_MEMORY
;
1699 cur
= &iov
[num_iov
];
1702 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1703 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1704 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1705 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1709 if (!smb1cli_is_andx_req(cmd
)) {
1711 * If the current command does not have AndX chanining
1717 if (wct
== 0 && bcc
== 0) {
1719 * An empty response also ends the chain,
1720 * most likely with an error.
1726 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1727 __location__
, (int)wct
, (int)cmd
));
1730 cmd
= CVAL(cur
[0].iov_base
, 0);
1733 * If it is the end of the chain we are also done.
1737 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1739 if (wct_ofs
< taken
) {
1740 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1742 if (wct_ofs
> buflen
) {
1743 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1747 * we consumed everything up to the start of the next
1753 remaining
= buflen
- taken
;
1755 if (remaining
> 0 && num_iov
>= 3) {
1757 * The last DATA block gets the remaining
1758 * bytes, this is needed to support
1759 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1761 iov
[num_iov
-1].iov_len
+= remaining
;
1765 *pnum_iov
= num_iov
;
1766 return NT_STATUS_OK
;
1770 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1773 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1774 TALLOC_CTX
*tmp_mem
,
1777 struct tevent_req
*req
;
1778 struct smbXcli_req_state
*state
;
1785 uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1786 size_t len
= smb_len_nbt(inbuf
);
1787 struct iovec
*iov
= NULL
;
1789 struct tevent_req
**chain
= NULL
;
1790 size_t num_chained
= 0;
1791 size_t num_responses
= 0;
1793 if (conn
->smb1
.read_braw_req
!= NULL
) {
1794 req
= conn
->smb1
.read_braw_req
;
1795 conn
->smb1
.read_braw_req
= NULL
;
1796 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1798 smbXcli_req_unset_pending(req
);
1800 if (state
->smb1
.recv_iov
== NULL
) {
1802 * For requests with more than
1803 * one response, we have to readd the
1806 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1809 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1810 return NT_STATUS_OK
;
1814 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inhdr
);
1815 state
->smb1
.recv_iov
[0].iov_len
= len
;
1816 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1817 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1819 state
->smb1
.recv_cmd
= SMBreadBraw
;
1820 state
->smb1
.recv_status
= NT_STATUS_OK
;
1821 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1823 tevent_req_done(req
);
1824 return NT_STATUS_OK
;
1827 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1828 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1829 DEBUG(10, ("Got non-SMB PDU\n"));
1830 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1834 * If we supported multiple encrytion contexts
1835 * here we'd look up based on tid.
1837 if (common_encryption_on(conn
->smb1
.trans_enc
)
1838 && (CVAL(inbuf
, 0) == 0)) {
1839 uint16_t enc_ctx_num
;
1841 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1842 if (!NT_STATUS_IS_OK(status
)) {
1843 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1844 nt_errstr(status
)));
1848 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1849 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1851 conn
->smb1
.trans_enc
->enc_ctx_num
));
1852 return NT_STATUS_INVALID_HANDLE
;
1855 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1857 if (!NT_STATUS_IS_OK(status
)) {
1858 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1859 nt_errstr(status
)));
1862 inhdr
= inbuf
+ NBT_HDR_SIZE
;
1863 len
= smb_len_nbt(inbuf
);
1866 mid
= SVAL(inhdr
, HDR_MID
);
1867 num_pending
= talloc_array_length(conn
->pending
);
1869 for (i
=0; i
<num_pending
; i
++) {
1870 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1874 if (i
== num_pending
) {
1875 /* Dump unexpected reply */
1876 return NT_STATUS_RETRY
;
1879 oplock_break
= false;
1881 if (mid
== 0xffff) {
1883 * Paranoia checks that this is really an oplock break request.
1885 oplock_break
= (len
== 51); /* hdr + 8 words */
1886 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1887 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1888 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1889 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1891 if (!oplock_break
) {
1892 /* Dump unexpected reply */
1893 return NT_STATUS_RETRY
;
1897 req
= conn
->pending
[i
];
1898 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1900 if (!oplock_break
/* oplock breaks are not signed */
1901 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1902 inhdr
, len
, state
->smb1
.seqnum
+1)) {
1903 DEBUG(10, ("cli_check_sign_mac failed\n"));
1904 return NT_STATUS_ACCESS_DENIED
;
1907 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1909 if (!NT_STATUS_IS_OK(status
)) {
1910 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1911 nt_errstr(status
)));
1915 cmd
= CVAL(inhdr
, HDR_COM
);
1916 status
= smb1cli_pull_raw_error(inhdr
);
1918 if (state
->smb1
.chained_requests
== NULL
) {
1920 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1923 smbXcli_req_unset_pending(req
);
1925 if (state
->smb1
.recv_iov
== NULL
) {
1927 * For requests with more than
1928 * one response, we have to readd the
1931 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1934 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1935 return NT_STATUS_OK
;
1939 state
->smb1
.recv_cmd
= cmd
;
1940 state
->smb1
.recv_status
= status
;
1941 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1943 state
->smb1
.recv_iov
[0] = iov
[0];
1944 state
->smb1
.recv_iov
[1] = iov
[1];
1945 state
->smb1
.recv_iov
[2] = iov
[2];
1947 if (talloc_array_length(conn
->pending
) == 0) {
1948 tevent_req_done(req
);
1949 return NT_STATUS_OK
;
1952 tevent_req_defer_callback(req
, state
->ev
);
1953 tevent_req_done(req
);
1954 return NT_STATUS_RETRY
;
1957 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1958 num_chained
= talloc_array_length(chain
);
1959 num_responses
= (num_iov
- 1)/2;
1961 if (num_responses
> num_chained
) {
1962 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1965 for (i
=0; i
<num_chained
; i
++) {
1966 size_t iov_idx
= 1 + (i
*2);
1967 struct iovec
*cur
= &iov
[iov_idx
];
1971 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1973 smbXcli_req_unset_pending(req
);
1976 * as we finish multiple requests here
1977 * we need to defer the callbacks as
1978 * they could destroy our current stack state.
1980 tevent_req_defer_callback(req
, state
->ev
);
1982 if (i
>= num_responses
) {
1983 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1987 if (state
->smb1
.recv_iov
== NULL
) {
1989 * For requests with more than
1990 * one response, we have to readd the
1993 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1996 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2001 state
->smb1
.recv_cmd
= cmd
;
2003 if (i
== (num_responses
- 1)) {
2005 * The last request in the chain gets the status
2007 state
->smb1
.recv_status
= status
;
2009 cmd
= CVAL(cur
[0].iov_base
, 0);
2010 state
->smb1
.recv_status
= NT_STATUS_OK
;
2013 state
->inbuf
= inbuf
;
2016 * Note: here we use talloc_reference() in a way
2017 * that does not expose it to the caller.
2019 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
2020 if (tevent_req_nomem(inbuf_ref
, req
)) {
2024 /* copy the related buffers */
2025 state
->smb1
.recv_iov
[0] = iov
[0];
2026 state
->smb1
.recv_iov
[1] = cur
[0];
2027 state
->smb1
.recv_iov
[2] = cur
[1];
2029 tevent_req_done(req
);
2032 return NT_STATUS_RETRY
;
2035 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
2036 TALLOC_CTX
*mem_ctx
,
2037 struct iovec
**piov
,
2041 uint32_t *pvwv_offset
,
2042 uint32_t *pnum_bytes
,
2044 uint32_t *pbytes_offset
,
2046 const struct smb1cli_req_expected_response
*expected
,
2047 size_t num_expected
)
2049 struct smbXcli_req_state
*state
=
2050 tevent_req_data(req
,
2051 struct smbXcli_req_state
);
2052 NTSTATUS status
= NT_STATUS_OK
;
2053 struct iovec
*recv_iov
= NULL
;
2054 uint8_t *hdr
= NULL
;
2056 uint32_t vwv_offset
= 0;
2057 uint16_t *vwv
= NULL
;
2058 uint32_t num_bytes
= 0;
2059 uint32_t bytes_offset
= 0;
2060 uint8_t *bytes
= NULL
;
2062 bool found_status
= false;
2063 bool found_size
= false;
2077 if (pvwv_offset
!= NULL
) {
2080 if (pnum_bytes
!= NULL
) {
2083 if (pbytes
!= NULL
) {
2086 if (pbytes_offset
!= NULL
) {
2089 if (pinbuf
!= NULL
) {
2093 if (state
->inbuf
!= NULL
) {
2094 recv_iov
= state
->smb1
.recv_iov
;
2095 state
->smb1
.recv_iov
= NULL
;
2096 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2097 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2098 wct
= recv_iov
[1].iov_len
/2;
2099 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2100 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2101 num_bytes
= recv_iov
[2].iov_len
;
2102 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2103 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2107 if (tevent_req_is_nterror(req
, &status
)) {
2108 for (i
=0; i
< num_expected
; i
++) {
2109 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2110 found_status
= true;
2116 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2122 if (num_expected
== 0) {
2123 found_status
= true;
2127 status
= state
->smb1
.recv_status
;
2129 for (i
=0; i
< num_expected
; i
++) {
2130 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2134 found_status
= true;
2135 if (expected
[i
].wct
== 0) {
2140 if (expected
[i
].wct
== wct
) {
2146 if (!found_status
) {
2151 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2155 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2167 if (pvwv_offset
!= NULL
) {
2168 *pvwv_offset
= vwv_offset
;
2170 if (pnum_bytes
!= NULL
) {
2171 *pnum_bytes
= num_bytes
;
2173 if (pbytes
!= NULL
) {
2176 if (pbytes_offset
!= NULL
) {
2177 *pbytes_offset
= bytes_offset
;
2179 if (pinbuf
!= NULL
) {
2180 *pinbuf
= state
->inbuf
;
2186 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2193 for (i
=0; i
<num_reqs
; i
++) {
2194 struct smbXcli_req_state
*state
;
2195 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2196 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2197 state
->smb1
.iov_count
-2);
2198 wct_ofs
= (wct_ofs
+ 3) & ~3;
2203 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2205 struct smbXcli_req_state
*first_state
=
2206 tevent_req_data(reqs
[0],
2207 struct smbXcli_req_state
);
2208 struct smbXcli_req_state
*state
;
2210 size_t chain_padding
= 0;
2212 struct iovec
*iov
= NULL
;
2213 struct iovec
*this_iov
;
2217 if (num_reqs
== 1) {
2218 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2219 first_state
->smb1
.iov
,
2220 first_state
->smb1
.iov_count
);
2224 for (i
=0; i
<num_reqs
; i
++) {
2225 if (!tevent_req_is_in_progress(reqs
[i
])) {
2226 return NT_STATUS_INTERNAL_ERROR
;
2229 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2231 if (state
->smb1
.iov_count
< 4) {
2232 return NT_STATUS_INVALID_PARAMETER_MIX
;
2237 * The NBT and SMB header
2250 iovlen
+= state
->smb1
.iov_count
- 2;
2253 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2255 return NT_STATUS_NO_MEMORY
;
2258 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2259 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2260 if (first_state
->smb1
.chained_requests
== NULL
) {
2262 return NT_STATUS_NO_MEMORY
;
2265 wct_offset
= HDR_WCT
;
2268 for (i
=0; i
<num_reqs
; i
++) {
2269 size_t next_padding
= 0;
2272 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2274 if (i
< num_reqs
-1) {
2275 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2276 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2278 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2279 return NT_STATUS_INVALID_PARAMETER_MIX
;
2283 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2284 state
->smb1
.iov_count
-2) + 1;
2285 if ((wct_offset
% 4) != 0) {
2286 next_padding
= 4 - (wct_offset
% 4);
2288 wct_offset
+= next_padding
;
2289 vwv
= state
->smb1
.vwv
;
2291 if (i
< num_reqs
-1) {
2292 struct smbXcli_req_state
*next_state
=
2293 tevent_req_data(reqs
[i
+1],
2294 struct smbXcli_req_state
);
2295 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2297 SSVAL(vwv
+1, 0, wct_offset
);
2298 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2299 /* properly end the chain */
2300 SCVAL(vwv
+0, 0, 0xff);
2301 SCVAL(vwv
+0, 1, 0xff);
2307 * The NBT and SMB header
2309 this_iov
[0] = state
->smb1
.iov
[0];
2310 this_iov
[1] = state
->smb1
.iov
[1];
2314 * This one is a bit subtle. We have to add
2315 * chain_padding bytes between the requests, and we
2316 * have to also include the wct field of the
2317 * subsequent requests. We use the subsequent header
2318 * for the padding, it contains the wct field in its
2321 this_iov
[0].iov_len
= chain_padding
+1;
2322 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2323 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2324 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2329 * copy the words and bytes
2331 memcpy(this_iov
, state
->smb1
.iov
+2,
2332 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2333 this_iov
+= state
->smb1
.iov_count
- 2;
2334 chain_padding
= next_padding
;
2337 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2338 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2340 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2341 return NT_STATUS_INVALID_PARAMETER_MIX
;
2344 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2345 if (!NT_STATUS_IS_OK(status
)) {
2347 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2351 return NT_STATUS_OK
;
2354 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2356 return ((tevent_queue_length(conn
->outgoing
) != 0)
2357 || (talloc_array_length(conn
->pending
) != 0));
2360 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2362 return conn
->smb2
.server
.capabilities
;
2365 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2367 return conn
->smb2
.server
.security_mode
;
2370 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2372 return conn
->smb2
.server
.max_trans_size
;
2375 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2377 return conn
->smb2
.server
.max_read_size
;
2380 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2382 return conn
->smb2
.server
.max_write_size
;
2385 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2386 uint16_t max_credits
)
2388 conn
->smb2
.max_credits
= max_credits
;
2391 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2393 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2395 struct smbXcli_req_state
*state
=
2396 tevent_req_data(req
,
2397 struct smbXcli_req_state
);
2398 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2399 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2400 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2401 struct smbXcli_tcon
*tcon
= state
->tcon
;
2402 struct smbXcli_session
*session
= state
->session
;
2403 uint8_t *fixed
= state
->smb2
.pad
;
2404 uint16_t fixed_len
= 4;
2405 struct tevent_req
*subreq
;
2406 struct smbXcli_req_state
*substate
;
2409 SSVAL(fixed
, 0, 0x04);
2412 subreq
= smb2cli_req_create(state
, state
->ev
,
2420 if (subreq
== NULL
) {
2423 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2426 * clear everything but the SMB2_HDR_FLAG_ASYNC flag
2427 * e.g. if SMB2_HDR_FLAG_CHAINED is set we get INVALID_PARAMETER back
2429 flags
&= SMB2_HDR_FLAG_ASYNC
;
2431 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2435 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2436 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2437 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2439 status
= smb2cli_req_compound_submit(&subreq
, 1);
2440 if (!NT_STATUS_IS_OK(status
)) {
2441 TALLOC_FREE(subreq
);
2445 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2450 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2452 /* we do not care about the result */
2453 TALLOC_FREE(subreq
);
2456 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2457 struct tevent_context
*ev
,
2458 struct smbXcli_conn
*conn
,
2460 uint32_t additional_flags
,
2461 uint32_t clear_flags
,
2462 uint32_t timeout_msec
,
2463 struct smbXcli_tcon
*tcon
,
2464 struct smbXcli_session
*session
,
2465 const uint8_t *fixed
,
2470 struct tevent_req
*req
;
2471 struct smbXcli_req_state
*state
;
2475 bool use_channel_sequence
= false;
2476 uint16_t channel_sequence
= 0;
2478 req
= tevent_req_create(mem_ctx
, &state
,
2479 struct smbXcli_req_state
);
2486 state
->session
= session
;
2489 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_PERSISTENT_HANDLES
) {
2490 use_channel_sequence
= true;
2491 } else if (conn
->smb2
.server
.capabilities
& SMB2_CAP_MULTI_CHANNEL
) {
2492 use_channel_sequence
= true;
2496 uid
= session
->smb2
->session_id
;
2498 if (use_channel_sequence
) {
2499 channel_sequence
= session
->smb2
->channel_sequence
;
2502 state
->smb2
.should_sign
= session
->smb2
->should_sign
;
2503 state
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
2505 if (cmd
== SMB2_OP_SESSSETUP
&&
2506 session
->smb2
->signing_key
.length
!= 0) {
2507 state
->smb2
.should_sign
= true;
2510 if (cmd
== SMB2_OP_SESSSETUP
&&
2511 session
->smb2_channel
.signing_key
.length
== 0) {
2512 state
->smb2
.should_encrypt
= false;
2517 tid
= tcon
->smb2
.tcon_id
;
2519 if (tcon
->smb2
.should_encrypt
) {
2520 state
->smb2
.should_encrypt
= true;
2524 if (state
->smb2
.should_encrypt
) {
2525 state
->smb2
.should_sign
= false;
2528 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2529 if (state
->smb2
.recv_iov
== NULL
) {
2534 flags
|= additional_flags
;
2535 flags
&= ~clear_flags
;
2537 state
->smb2
.fixed
= fixed
;
2538 state
->smb2
.fixed_len
= fixed_len
;
2539 state
->smb2
.dyn
= dyn
;
2540 state
->smb2
.dyn_len
= dyn_len
;
2542 if (state
->smb2
.should_encrypt
) {
2543 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2544 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
2547 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2548 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2549 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2550 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CHANNEL_SEQUENCE
, channel_sequence
);
2551 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2552 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, 0); /* reserved */
2553 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2554 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2557 case SMB2_OP_CANCEL
:
2558 state
->one_way
= true;
2562 * If this is a dummy request, it will have
2563 * UINT64_MAX as message id.
2564 * If we send on break acknowledgement,
2565 * this gets overwritten later.
2567 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2571 if (timeout_msec
> 0) {
2572 struct timeval endtime
;
2574 endtime
= timeval_current_ofs_msec(timeout_msec
);
2575 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2583 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2585 struct smbXcli_req_state
*state
=
2586 tevent_req_data(req
,
2587 struct smbXcli_req_state
);
2589 state
->smb2
.notify_async
= true;
2592 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2593 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2594 TALLOC_CTX
*tmp_mem
,
2597 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2600 struct smbXcli_req_state
*state
;
2601 struct tevent_req
*subreq
;
2603 int i
, num_iov
, nbt_len
;
2606 * 1 for the nbt length
2607 * per request: TRANSFORM, HDR, fixed, dyn, padding
2608 * -1 because the last one does not need padding
2611 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 5*num_reqs
- 1);
2613 return NT_STATUS_NO_MEMORY
;
2619 for (i
=0; i
<num_reqs
; i
++) {
2629 const DATA_BLOB
*signing_key
= NULL
;
2630 const DATA_BLOB
*encryption_key
= NULL
;
2632 if (!tevent_req_is_in_progress(reqs
[i
])) {
2633 return NT_STATUS_INTERNAL_ERROR
;
2636 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2638 if (!smbXcli_conn_is_connected(state
->conn
)) {
2639 return NT_STATUS_CONNECTION_DISCONNECTED
;
2642 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2643 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2644 return NT_STATUS_REVISION_MISMATCH
;
2647 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2648 if (opcode
== SMB2_OP_CANCEL
) {
2652 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2654 return NT_STATUS_CONNECTION_ABORTED
;
2657 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2658 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2663 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2665 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2666 if (avail
< charge
) {
2667 return NT_STATUS_INTERNAL_ERROR
;
2671 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2672 credits
= state
->conn
->smb2
.max_credits
-
2673 state
->conn
->smb2
.cur_credits
;
2675 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2679 mid
= state
->conn
->smb2
.mid
;
2680 state
->conn
->smb2
.mid
+= charge
;
2681 state
->conn
->smb2
.cur_credits
-= charge
;
2683 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2684 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2686 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2687 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2690 if (state
->session
) {
2692 * We prefer the channel signing key if it is
2695 if (state
->smb2
.should_sign
) {
2696 signing_key
= &state
->session
->smb2_channel
.signing_key
;
2700 * If it is a channel binding, we already have the main
2701 * signing key and try that one.
2703 if (signing_key
&& signing_key
->length
== 0) {
2704 signing_key
= &state
->session
->smb2
->signing_key
;
2708 * If we do not have any session key yet, we skip the
2709 * signing of SMB2_OP_SESSSETUP requests.
2711 if (signing_key
&& signing_key
->length
== 0) {
2715 if (state
->smb2
.should_encrypt
) {
2716 encryption_key
= &state
->session
->smb2
->encryption_key
;
2720 if (encryption_key
) {
2722 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
2723 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
2728 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2729 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2732 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2733 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2736 if (state
->smb2
.dyn
!= NULL
) {
2737 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2738 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2742 reqlen
= sizeof(state
->smb2
.hdr
);
2743 reqlen
+= state
->smb2
.fixed_len
;
2744 reqlen
+= state
->smb2
.dyn_len
;
2746 if (i
< num_reqs
-1) {
2747 if ((reqlen
% 8) > 0) {
2748 uint8_t pad
= 8 - (reqlen
% 8);
2749 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2750 iov
[num_iov
].iov_len
= pad
;
2754 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2757 if (encryption_key
) {
2762 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
,
2763 state
->session
->smb2
->nonce_low
);
2764 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
2765 state
->session
->smb2
->nonce_high
);
2767 state
->session
->smb2
->nonce_low
+= 1;
2768 if (state
->session
->smb2
->nonce_low
== 0) {
2769 state
->session
->smb2
->nonce_high
+= 1;
2770 state
->session
->smb2
->nonce_low
+= 1;
2773 buf
= talloc_array(iov
, uint8_t, reqlen
);
2775 return NT_STATUS_NO_MEMORY
;
2778 reqlen
+= SMB2_TF_HDR_SIZE
;
2781 * We copy the buffers before encrypting them,
2782 * this is at least currently needed for the
2783 * to keep state->smb2.hdr.
2785 * Also the callers may expect there buffers
2788 for (vi
= hdr_iov
; vi
< num_iov
; vi
++) {
2789 struct iovec
*v
= &iov
[vi
];
2790 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
2792 memcpy(buf
, o
, v
->iov_len
);
2793 v
->iov_base
= (void *)buf
;
2797 status
= smb2_signing_encrypt_pdu(*encryption_key
,
2798 state
->session
->conn
->protocol
,
2799 &iov
[tf_iov
], num_iov
- tf_iov
);
2800 if (!NT_STATUS_IS_OK(status
)) {
2803 } else if (signing_key
) {
2806 status
= smb2_signing_sign_pdu(*signing_key
,
2807 state
->session
->conn
->protocol
,
2808 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2809 if (!NT_STATUS_IS_OK(status
)) {
2816 ret
= smbXcli_req_set_pending(reqs
[i
]);
2818 return NT_STATUS_NO_MEMORY
;
2822 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2823 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2824 iov
[0].iov_base
= state
->length_hdr
;
2825 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2827 if (state
->conn
->dispatch_incoming
== NULL
) {
2828 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2831 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2832 state
->conn
->write_fd
, false, iov
, num_iov
);
2833 if (subreq
== NULL
) {
2834 return NT_STATUS_NO_MEMORY
;
2836 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2837 return NT_STATUS_OK
;
2840 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2842 struct smbXcli_req_state
*state
=
2843 tevent_req_data(req
,
2844 struct smbXcli_req_state
);
2846 state
->smb2
.credit_charge
= charge
;
2849 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2850 struct tevent_context
*ev
,
2851 struct smbXcli_conn
*conn
,
2853 uint32_t additional_flags
,
2854 uint32_t clear_flags
,
2855 uint32_t timeout_msec
,
2856 struct smbXcli_tcon
*tcon
,
2857 struct smbXcli_session
*session
,
2858 const uint8_t *fixed
,
2863 struct tevent_req
*req
;
2866 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2867 additional_flags
, clear_flags
,
2870 fixed
, fixed_len
, dyn
, dyn_len
);
2874 if (!tevent_req_is_in_progress(req
)) {
2875 return tevent_req_post(req
, ev
);
2877 status
= smb2cli_req_compound_submit(&req
, 1);
2878 if (tevent_req_nterror(req
, status
)) {
2879 return tevent_req_post(req
, ev
);
2884 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2886 struct tevent_req
*req
=
2887 tevent_req_callback_data(subreq
,
2889 struct smbXcli_req_state
*state
=
2890 tevent_req_data(req
,
2891 struct smbXcli_req_state
);
2895 nwritten
= writev_recv(subreq
, &err
);
2896 TALLOC_FREE(subreq
);
2897 if (nwritten
== -1) {
2898 /* here, we need to notify all pending requests */
2899 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2900 smbXcli_conn_disconnect(state
->conn
, status
);
2905 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2908 TALLOC_CTX
*mem_ctx
,
2909 struct iovec
**piov
, int *pnum_iov
)
2914 uint8_t *first_hdr
= buf
;
2916 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2918 return NT_STATUS_NO_MEMORY
;
2921 while (taken
< buflen
) {
2924 size_t len
= buflen
- taken
;
2925 uint8_t *hdr
= first_hdr
+ taken
;
2928 size_t next_command_ofs
;
2930 struct iovec
*iov_tmp
;
2933 DEBUG(10, ("%d bytes left, expected at least %d\n",
2937 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2938 struct smbXcli_session
*s
;
2940 struct iovec tf_iov
[2];
2943 if (len
< SMB2_TF_HDR_SIZE
) {
2944 DEBUG(10, ("%d bytes left, expected at least %d\n",
2945 (int)len
, SMB2_TF_HDR_SIZE
));
2949 tf_len
= SMB2_TF_HDR_SIZE
;
2952 hdr
= first_hdr
+ taken
;
2953 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
2954 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
2957 for (; s
; s
= s
->next
) {
2958 if (s
->smb2
->session_id
!= uid
) {
2965 DEBUG(10, ("unknown session_id %llu\n",
2966 (unsigned long long)uid
));
2970 tf_iov
[0].iov_base
= (void *)tf
;
2971 tf_iov
[0].iov_len
= tf_len
;
2972 tf_iov
[1].iov_base
= (void *)hdr
;
2973 tf_iov
[1].iov_len
= len
;
2975 status
= smb2_signing_decrypt_pdu(s
->smb2
->decryption_key
,
2978 if (!NT_STATUS_IS_OK(status
)) {
2985 * We need the header plus the body length field
2988 if (len
< SMB2_HDR_BODY
+ 2) {
2989 DEBUG(10, ("%d bytes left, expected at least %d\n",
2990 (int)len
, SMB2_HDR_BODY
));
2993 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
2994 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
2998 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
2999 DEBUG(10, ("Got HDR len %d, expected %d\n",
3000 SVAL(hdr
, 4), SMB2_HDR_BODY
));
3005 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
3006 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
3008 if (next_command_ofs
!= 0) {
3009 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
3012 if (next_command_ofs
> full_size
) {
3015 if (tf
&& next_command_ofs
< len
) {
3018 full_size
= next_command_ofs
;
3020 if (body_size
< 2) {
3023 body_size
&= 0xfffe;
3025 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
3029 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
3031 if (iov_tmp
== NULL
) {
3033 return NT_STATUS_NO_MEMORY
;
3036 cur
= &iov
[num_iov
];
3039 cur
[0].iov_base
= tf
;
3040 cur
[0].iov_len
= tf_len
;
3041 cur
[1].iov_base
= hdr
;
3042 cur
[1].iov_len
= SMB2_HDR_BODY
;
3043 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
3044 cur
[2].iov_len
= body_size
;
3045 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
3046 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
3052 *pnum_iov
= num_iov
;
3053 return NT_STATUS_OK
;
3057 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3060 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
3063 size_t num_pending
= talloc_array_length(conn
->pending
);
3066 for (i
=0; i
<num_pending
; i
++) {
3067 struct tevent_req
*req
= conn
->pending
[i
];
3068 struct smbXcli_req_state
*state
=
3069 tevent_req_data(req
,
3070 struct smbXcli_req_state
);
3072 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
3079 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3080 TALLOC_CTX
*tmp_mem
,
3083 struct tevent_req
*req
;
3084 struct smbXcli_req_state
*state
= NULL
;
3089 struct smbXcli_session
*last_session
= NULL
;
3090 size_t inbuf_len
= smb_len_tcp(inbuf
);
3092 status
= smb2cli_inbuf_parse_compound(conn
,
3093 inbuf
+ NBT_HDR_SIZE
,
3097 if (!NT_STATUS_IS_OK(status
)) {
3101 for (i
=0; i
<num_iov
; i
+=4) {
3102 uint8_t *inbuf_ref
= NULL
;
3103 struct iovec
*cur
= &iov
[i
];
3104 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3105 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3106 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3107 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3108 uint16_t req_opcode
;
3110 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3111 uint32_t new_credits
;
3112 struct smbXcli_session
*session
= NULL
;
3113 const DATA_BLOB
*signing_key
= NULL
;
3115 new_credits
= conn
->smb2
.cur_credits
;
3116 new_credits
+= credits
;
3117 if (new_credits
> UINT16_MAX
) {
3118 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3120 conn
->smb2
.cur_credits
+= credits
;
3122 req
= smb2cli_conn_find_pending(conn
, mid
);
3124 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3126 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3128 state
->smb2
.got_async
= false;
3130 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3131 if (opcode
!= req_opcode
) {
3132 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3134 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3136 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3137 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3140 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3141 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3142 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3143 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3146 * async interim responses are not signed,
3147 * even if the SMB2_HDR_FLAG_SIGNED flag
3150 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
3151 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
3152 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
3154 if (state
->smb2
.notify_async
) {
3155 state
->smb2
.got_async
= true;
3156 tevent_req_defer_callback(req
, state
->ev
);
3157 tevent_req_notify_callback(req
);
3162 session
= state
->session
;
3163 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3164 session
= last_session
;
3166 last_session
= session
;
3168 if (state
->smb2
.should_sign
) {
3169 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3170 return NT_STATUS_ACCESS_DENIED
;
3174 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3175 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3177 if (session
== NULL
) {
3178 struct smbXcli_session
*s
;
3180 s
= state
->conn
->sessions
;
3181 for (; s
; s
= s
->next
) {
3182 if (s
->smb2
->session_id
!= uid
) {
3191 if (session
== NULL
) {
3192 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3195 last_session
= session
;
3196 signing_key
= &session
->smb2_channel
.signing_key
;
3199 if (opcode
== SMB2_OP_SESSSETUP
) {
3201 * We prefer the channel signing key, if it is
3204 * If we do not have a channel signing key yet,
3205 * we try the main signing key, if it is not
3206 * the final response.
3208 if (signing_key
&& signing_key
->length
== 0 &&
3209 !NT_STATUS_IS_OK(status
)) {
3210 signing_key
= &session
->smb2
->signing_key
;
3213 if (signing_key
&& signing_key
->length
== 0) {
3215 * If we do not have a session key to
3216 * verify the signature, we defer the
3217 * signing check to the caller.
3219 * The caller gets NT_STATUS_OK, it
3221 * smb2cli_session_set_session_key()
3223 * smb2cli_session_set_channel_key()
3224 * which will check the signature
3225 * with the channel signing key.
3231 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3233 * if the server returns NT_STATUS_USER_SESSION_DELETED
3234 * the response is not signed and we should
3235 * propagate the NT_STATUS_USER_SESSION_DELETED
3236 * status to the caller.
3239 } else if (state
->smb2
.should_encrypt
) {
3240 if (cur
[0].iov_len
!= SMB2_TF_HDR_SIZE
) {
3241 return NT_STATUS_ACCESS_DENIED
;
3245 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3246 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3247 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3249 * if the server returns
3250 * NT_STATUS_NETWORK_NAME_DELETED
3251 * NT_STATUS_FILE_CLOSED
3252 * NT_STATUS_INVALID_PARAMETER
3253 * the response might not be signed
3254 * as this happens before the signing checks.
3256 * If server echos the signature (or all zeros)
3257 * we should report the status from the server
3263 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3264 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3267 state
->smb2
.signing_skipped
= true;
3273 static const uint8_t zeros
[16];
3275 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3279 state
->smb2
.signing_skipped
= true;
3286 status
= smb2_signing_check_pdu(*signing_key
,
3287 state
->conn
->protocol
,
3289 if (!NT_STATUS_IS_OK(status
)) {
3291 * If the signing check fails, we disconnect
3298 smbXcli_req_unset_pending(req
);
3301 * There might be more than one response
3302 * we need to defer the notifications
3304 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3309 tevent_req_defer_callback(req
, state
->ev
);
3313 * Note: here we use talloc_reference() in a way
3314 * that does not expose it to the caller.
3316 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3317 if (tevent_req_nomem(inbuf_ref
, req
)) {
3321 /* copy the related buffers */
3322 state
->smb2
.recv_iov
[0] = cur
[1];
3323 state
->smb2
.recv_iov
[1] = cur
[2];
3324 state
->smb2
.recv_iov
[2] = cur
[3];
3326 tevent_req_done(req
);
3330 return NT_STATUS_RETRY
;
3333 return NT_STATUS_OK
;
3336 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3337 struct iovec
**piov
,
3338 const struct smb2cli_req_expected_response
*expected
,
3339 size_t num_expected
)
3341 struct smbXcli_req_state
*state
=
3342 tevent_req_data(req
,
3343 struct smbXcli_req_state
);
3346 bool found_status
= false;
3347 bool found_size
= false;
3354 if (state
->smb2
.got_async
) {
3355 return STATUS_PENDING
;
3358 if (tevent_req_is_nterror(req
, &status
)) {
3359 for (i
=0; i
< num_expected
; i
++) {
3360 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3361 found_status
= true;
3367 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3373 if (num_expected
== 0) {
3374 found_status
= true;
3378 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3379 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3381 for (i
=0; i
< num_expected
; i
++) {
3382 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3386 found_status
= true;
3387 if (expected
[i
].body_size
== 0) {
3392 if (expected
[i
].body_size
== body_size
) {
3398 if (!found_status
) {
3402 if (state
->smb2
.signing_skipped
) {
3403 if (num_expected
> 0) {
3404 return NT_STATUS_ACCESS_DENIED
;
3406 if (!NT_STATUS_IS_ERR(status
)) {
3407 return NT_STATUS_ACCESS_DENIED
;
3412 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3416 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3422 static const struct {
3423 enum protocol_types proto
;
3424 const char *smb1_name
;
3425 } smb1cli_prots
[] = {
3426 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3427 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3428 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3429 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3430 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3431 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3432 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3433 {PROTOCOL_LANMAN2
, "Samba"},
3434 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3435 {PROTOCOL_NT1
, "NT LM 0.12"},
3436 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3437 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3440 static const struct {
3441 enum protocol_types proto
;
3442 uint16_t smb2_dialect
;
3443 } smb2cli_prots
[] = {
3444 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3445 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3446 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3447 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3448 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3451 struct smbXcli_negprot_state
{
3452 struct smbXcli_conn
*conn
;
3453 struct tevent_context
*ev
;
3454 uint32_t timeout_msec
;
3455 enum protocol_types min_protocol
;
3456 enum protocol_types max_protocol
;
3460 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3464 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3465 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3466 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3467 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3468 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3469 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3473 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3474 struct tevent_context
*ev
,
3475 struct smbXcli_conn
*conn
,
3476 uint32_t timeout_msec
,
3477 enum protocol_types min_protocol
,
3478 enum protocol_types max_protocol
)
3480 struct tevent_req
*req
, *subreq
;
3481 struct smbXcli_negprot_state
*state
;
3483 req
= tevent_req_create(mem_ctx
, &state
,
3484 struct smbXcli_negprot_state
);
3490 state
->timeout_msec
= timeout_msec
;
3491 state
->min_protocol
= min_protocol
;
3492 state
->max_protocol
= max_protocol
;
3494 if (min_protocol
== PROTOCOL_NONE
) {
3495 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3496 return tevent_req_post(req
, ev
);
3499 if (max_protocol
== PROTOCOL_NONE
) {
3500 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3501 return tevent_req_post(req
, ev
);
3504 if (min_protocol
> max_protocol
) {
3505 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3506 return tevent_req_post(req
, ev
);
3509 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3510 (max_protocol
< PROTOCOL_SMB2_02
)) {
3514 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3516 subreq
= smbXcli_negprot_smb1_subreq(state
);
3517 if (tevent_req_nomem(subreq
, req
)) {
3518 return tevent_req_post(req
, ev
);
3520 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3524 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3525 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3529 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3531 subreq
= smbXcli_negprot_smb2_subreq(state
);
3532 if (tevent_req_nomem(subreq
, req
)) {
3533 return tevent_req_post(req
, ev
);
3535 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3540 * We send an SMB1 negprot with the SMB2 dialects
3541 * and expect a SMB1 or a SMB2 response.
3543 * smbXcli_negprot_dispatch_incoming() will fix the
3544 * callback to match protocol of the response.
3546 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3548 subreq
= smbXcli_negprot_smb1_subreq(state
);
3549 if (tevent_req_nomem(subreq
, req
)) {
3550 return tevent_req_post(req
, ev
);
3552 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3556 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3558 struct tevent_req
*req
=
3559 tevent_req_callback_data(subreq
,
3564 * we just want the low level error
3566 status
= tevent_req_simple_recv_ntstatus(subreq
);
3567 TALLOC_FREE(subreq
);
3568 if (tevent_req_nterror(req
, status
)) {
3572 /* this should never happen */
3573 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3576 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3579 DATA_BLOB bytes
= data_blob_null
;
3583 /* setup the protocol strings */
3584 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3588 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3592 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3596 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3602 * We now it is already ascii and
3603 * we want NULL termination.
3605 ok
= data_blob_append(state
, &bytes
,
3606 smb1cli_prots
[i
].smb1_name
,
3607 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3613 smb1cli_req_flags(state
->max_protocol
,
3614 state
->conn
->smb1
.client
.capabilities
,
3619 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3623 state
->timeout_msec
,
3624 0xFFFE, 0, NULL
, /* pid, tid, session */
3625 0, NULL
, /* wct, vwv */
3626 bytes
.length
, bytes
.data
);
3629 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3631 struct tevent_req
*req
=
3632 tevent_req_callback_data(subreq
,
3634 struct smbXcli_negprot_state
*state
=
3635 tevent_req_data(req
,
3636 struct smbXcli_negprot_state
);
3637 struct smbXcli_conn
*conn
= state
->conn
;
3638 struct iovec
*recv_iov
= NULL
;
3647 size_t num_prots
= 0;
3649 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3650 uint32_t both_capabilities
;
3651 uint32_t server_capabilities
= 0;
3652 uint32_t capabilities
;
3653 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3654 uint32_t server_max_xmit
= 0;
3656 uint32_t server_max_mux
= 0;
3657 uint16_t server_security_mode
= 0;
3658 uint32_t server_session_key
= 0;
3659 bool server_readbraw
= false;
3660 bool server_writebraw
= false;
3661 bool server_lockread
= false;
3662 bool server_writeunlock
= false;
3663 struct GUID server_guid
= GUID_zero();
3664 DATA_BLOB server_gss_blob
= data_blob_null
;
3665 uint8_t server_challenge
[8];
3666 char *server_workgroup
= NULL
;
3667 char *server_name
= NULL
;
3668 int server_time_zone
= 0;
3669 NTTIME server_system_time
= 0;
3670 static const struct smb1cli_req_expected_response expected
[] = {
3672 .status
= NT_STATUS_OK
,
3673 .wct
= 0x11, /* NT1 */
3676 .status
= NT_STATUS_OK
,
3677 .wct
= 0x0D, /* LM */
3680 .status
= NT_STATUS_OK
,
3681 .wct
= 0x01, /* CORE */
3685 ZERO_STRUCT(server_challenge
);
3687 status
= smb1cli_req_recv(subreq
, state
,
3692 NULL
, /* pvwv_offset */
3695 NULL
, /* pbytes_offset */
3697 expected
, ARRAY_SIZE(expected
));
3698 TALLOC_FREE(subreq
);
3699 if (tevent_req_nterror(req
, status
)) {
3703 flags
= CVAL(inhdr
, HDR_FLG
);
3705 protnum
= SVAL(vwv
, 0);
3707 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3708 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3712 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3716 if (protnum
!= num_prots
) {
3721 conn
->protocol
= smb1cli_prots
[i
].proto
;
3725 if (conn
->protocol
== PROTOCOL_NONE
) {
3726 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3730 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3731 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3732 "and the selected protocol level doesn't support it.\n"));
3733 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3737 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3738 server_lockread
= true;
3739 server_writeunlock
= true;
3742 if (conn
->protocol
>= PROTOCOL_NT1
) {
3743 const char *client_signing
= NULL
;
3744 bool server_mandatory
= false;
3745 bool server_allowed
= false;
3746 const char *server_signing
= NULL
;
3751 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3756 server_security_mode
= CVAL(vwv
+ 1, 0);
3757 server_max_mux
= SVAL(vwv
+ 1, 1);
3758 server_max_xmit
= IVAL(vwv
+ 3, 1);
3759 server_session_key
= IVAL(vwv
+ 7, 1);
3760 server_time_zone
= SVALS(vwv
+ 15, 1);
3761 server_time_zone
*= 60;
3762 /* this time arrives in real GMT */
3763 server_system_time
= BVAL(vwv
+ 11, 1);
3764 server_capabilities
= IVAL(vwv
+ 9, 1);
3766 key_len
= CVAL(vwv
+ 16, 1);
3768 if (server_capabilities
& CAP_RAW_MODE
) {
3769 server_readbraw
= true;
3770 server_writebraw
= true;
3772 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3773 server_lockread
= true;
3776 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3777 DATA_BLOB blob1
, blob2
;
3779 if (num_bytes
< 16) {
3780 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3784 blob1
= data_blob_const(bytes
, 16);
3785 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3786 if (tevent_req_nterror(req
, status
)) {
3790 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3791 blob2
= data_blob_dup_talloc(state
, blob1
);
3792 if (blob1
.length
> 0 &&
3793 tevent_req_nomem(blob2
.data
, req
)) {
3796 server_gss_blob
= blob2
;
3798 DATA_BLOB blob1
, blob2
;
3800 if (num_bytes
< key_len
) {
3801 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3805 if (key_len
!= 0 && key_len
!= 8) {
3806 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3811 memcpy(server_challenge
, bytes
, 8);
3814 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3815 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3816 if (blob1
.length
> 0) {
3819 len
= utf16_len_n(blob1
.data
,
3823 ok
= convert_string_talloc(state
,
3831 status
= map_nt_error_from_unix_common(errno
);
3832 tevent_req_nterror(req
, status
);
3837 blob2
.data
+= blob1
.length
;
3838 blob2
.length
-= blob1
.length
;
3839 if (blob2
.length
> 0) {
3842 len
= utf16_len_n(blob1
.data
,
3846 ok
= convert_string_talloc(state
,
3854 status
= map_nt_error_from_unix_common(errno
);
3855 tevent_req_nterror(req
, status
);
3861 client_signing
= "disabled";
3862 if (conn
->allow_signing
) {
3863 client_signing
= "allowed";
3865 if (conn
->mandatory_signing
) {
3866 client_signing
= "required";
3869 server_signing
= "not supported";
3870 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3871 server_signing
= "supported";
3872 server_allowed
= true;
3874 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3875 server_signing
= "required";
3876 server_mandatory
= true;
3879 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3883 DEBUG(1,("cli_negprot: SMB signing is required, "
3884 "but client[%s] and server[%s] mismatch\n",
3885 client_signing
, server_signing
));
3886 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3890 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3896 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3900 server_security_mode
= SVAL(vwv
+ 1, 0);
3901 server_max_xmit
= SVAL(vwv
+ 2, 0);
3902 server_max_mux
= SVAL(vwv
+ 3, 0);
3903 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3904 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3905 server_session_key
= IVAL(vwv
+ 6, 0);
3906 server_time_zone
= SVALS(vwv
+ 10, 0);
3907 server_time_zone
*= 60;
3908 /* this time is converted to GMT by make_unix_date */
3909 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3910 unix_to_nt_time(&server_system_time
, t
);
3911 key_len
= SVAL(vwv
+ 11, 0);
3913 if (num_bytes
< key_len
) {
3914 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3918 if (key_len
!= 0 && key_len
!= 8) {
3919 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3924 memcpy(server_challenge
, bytes
, 8);
3927 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3928 if (blob1
.length
> 0) {
3932 len
= utf16_len_n(blob1
.data
,
3936 ok
= convert_string_talloc(state
,
3944 status
= map_nt_error_from_unix_common(errno
);
3945 tevent_req_nterror(req
, status
);
3951 /* the old core protocol */
3952 server_time_zone
= get_time_zone(time(NULL
));
3953 server_max_xmit
= 1024;
3957 if (server_max_xmit
< 1024) {
3958 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3962 if (server_max_mux
< 1) {
3963 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3968 * Now calculate the negotiated capabilities
3969 * based on the mask for:
3970 * - client only flags
3971 * - flags used in both directions
3972 * - server only flags
3974 both_capabilities
= client_capabilities
& server_capabilities
;
3975 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
3976 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
3977 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
3979 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
3981 conn
->smb1
.server
.capabilities
= server_capabilities
;
3982 conn
->smb1
.capabilities
= capabilities
;
3984 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
3985 conn
->smb1
.max_xmit
= max_xmit
;
3987 conn
->smb1
.server
.max_mux
= server_max_mux
;
3989 conn
->smb1
.server
.security_mode
= server_security_mode
;
3991 conn
->smb1
.server
.readbraw
= server_readbraw
;
3992 conn
->smb1
.server
.writebraw
= server_writebraw
;
3993 conn
->smb1
.server
.lockread
= server_lockread
;
3994 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
3996 conn
->smb1
.server
.session_key
= server_session_key
;
3998 talloc_steal(conn
, server_gss_blob
.data
);
3999 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
4000 conn
->smb1
.server
.guid
= server_guid
;
4001 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
4002 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
4003 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
4005 conn
->smb1
.server
.time_zone
= server_time_zone
;
4006 conn
->smb1
.server
.system_time
= server_system_time
;
4008 tevent_req_done(req
);
4011 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
4015 uint16_t dialect_count
= 0;
4017 buf
= state
->smb2
.dyn
;
4018 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4019 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4023 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4027 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
4031 buf
= state
->smb2
.fixed
;
4033 SSVAL(buf
, 2, dialect_count
);
4034 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
4035 SSVAL(buf
, 6, 0); /* Reserved */
4036 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
4037 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
4039 SIVAL(buf
, 8, 0); /* Capabilities */
4041 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
4045 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
4047 if (!NT_STATUS_IS_OK(status
)) {
4050 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
4052 memset(buf
+12, 0, 16); /* ClientGuid */
4054 SBVAL(buf
, 28, 0); /* ClientStartTime */
4056 return smb2cli_req_send(state
, state
->ev
,
4057 state
->conn
, SMB2_OP_NEGPROT
,
4059 state
->timeout_msec
,
4060 NULL
, NULL
, /* tcon, session */
4061 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
4062 state
->smb2
.dyn
, dialect_count
*2);
4065 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
4067 struct tevent_req
*req
=
4068 tevent_req_callback_data(subreq
,
4070 struct smbXcli_negprot_state
*state
=
4071 tevent_req_data(req
,
4072 struct smbXcli_negprot_state
);
4073 struct smbXcli_conn
*conn
= state
->conn
;
4074 size_t security_offset
, security_length
;
4080 uint16_t dialect_revision
;
4081 static const struct smb2cli_req_expected_response expected
[] = {
4083 .status
= NT_STATUS_OK
,
4088 status
= smb2cli_req_recv(subreq
, state
, &iov
,
4089 expected
, ARRAY_SIZE(expected
));
4090 TALLOC_FREE(subreq
);
4091 if (tevent_req_nterror(req
, status
)) {
4095 body
= (uint8_t *)iov
[1].iov_base
;
4097 dialect_revision
= SVAL(body
, 4);
4099 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4100 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4104 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4108 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4112 conn
->protocol
= smb2cli_prots
[i
].proto
;
4116 if (conn
->protocol
== PROTOCOL_NONE
) {
4117 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
4118 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4122 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4123 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4127 /* make sure we do not loop forever */
4128 state
->min_protocol
= PROTOCOL_SMB2_02
;
4131 * send a SMB2 negprot, in order to negotiate
4134 subreq
= smbXcli_negprot_smb2_subreq(state
);
4135 if (tevent_req_nomem(subreq
, req
)) {
4138 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4142 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4144 blob
= data_blob_const(body
+ 8, 16);
4145 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4146 if (tevent_req_nterror(req
, status
)) {
4150 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4151 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4152 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4153 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4154 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4155 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4157 security_offset
= SVAL(body
, 56);
4158 security_length
= SVAL(body
, 58);
4160 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4161 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4165 if (security_length
> iov
[2].iov_len
) {
4166 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4170 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4173 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4177 tevent_req_done(req
);
4180 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4181 TALLOC_CTX
*tmp_mem
,
4184 size_t num_pending
= talloc_array_length(conn
->pending
);
4185 struct tevent_req
*subreq
;
4186 struct smbXcli_req_state
*substate
;
4187 struct tevent_req
*req
;
4188 uint32_t protocol_magic
;
4189 size_t inbuf_len
= smb_len_nbt(inbuf
);
4191 if (num_pending
!= 1) {
4192 return NT_STATUS_INTERNAL_ERROR
;
4195 if (inbuf_len
< 4) {
4196 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4199 subreq
= conn
->pending
[0];
4200 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4201 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4203 protocol_magic
= IVAL(inbuf
, 4);
4205 switch (protocol_magic
) {
4207 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4208 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4209 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4212 if (substate
->smb2
.recv_iov
== NULL
) {
4214 * For the SMB1 negprot we have move it.
4216 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4217 substate
->smb1
.recv_iov
= NULL
;
4221 * we got an SMB2 answer, which consumed sequence number 0
4222 * so we need to use 1 as the next one
4225 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4226 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4227 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4230 DEBUG(10, ("Got non-SMB PDU\n"));
4231 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4234 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4236 return tevent_req_simple_recv_ntstatus(req
);
4239 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4240 uint32_t timeout_msec
,
4241 enum protocol_types min_protocol
,
4242 enum protocol_types max_protocol
)
4244 TALLOC_CTX
*frame
= talloc_stackframe();
4245 struct tevent_context
*ev
;
4246 struct tevent_req
*req
;
4247 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4250 if (smbXcli_conn_has_async_calls(conn
)) {
4252 * Can't use sync call while an async call is in flight
4254 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4257 ev
= tevent_context_init(frame
);
4261 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4262 min_protocol
, max_protocol
);
4266 ok
= tevent_req_poll(req
, ev
);
4268 status
= map_nt_error_from_unix_common(errno
);
4271 status
= smbXcli_negprot_recv(req
);
4277 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4279 if (session
->conn
== NULL
) {
4283 DLIST_REMOVE(session
->conn
->sessions
, session
);
4287 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4288 struct smbXcli_conn
*conn
)
4290 struct smbXcli_session
*session
;
4292 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4293 if (session
== NULL
) {
4296 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
4297 if (session
->smb2
== NULL
) {
4298 talloc_free(session
);
4301 talloc_set_destructor(session
, smbXcli_session_destructor
);
4303 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4304 session
->conn
= conn
;
4309 NTSTATUS
smbXcli_session_application_key(struct smbXcli_session
*session
,
4310 TALLOC_CTX
*mem_ctx
,
4313 const DATA_BLOB
*application_key
;
4315 *key
= data_blob_null
;
4317 if (session
->conn
== NULL
) {
4318 return NT_STATUS_NO_USER_SESSION_KEY
;
4321 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
4322 application_key
= &session
->smb2
->application_key
;
4324 application_key
= &session
->smb1
.application_key
;
4327 if (application_key
->length
== 0) {
4328 return NT_STATUS_NO_USER_SESSION_KEY
;
4331 *key
= data_blob_dup_talloc(mem_ctx
, *application_key
);
4332 if (key
->data
== NULL
) {
4333 return NT_STATUS_NO_MEMORY
;
4336 return NT_STATUS_OK
;
4339 uint16_t smb1cli_session_current_id(struct smbXcli_session
*session
)
4341 return session
->smb1
.session_id
;
4344 void smb1cli_session_set_id(struct smbXcli_session
*session
,
4345 uint16_t session_id
)
4347 session
->smb1
.session_id
= session_id
;
4350 NTSTATUS
smb1cli_session_set_session_key(struct smbXcli_session
*session
,
4351 const DATA_BLOB _session_key
)
4353 struct smbXcli_conn
*conn
= session
->conn
;
4354 uint8_t session_key
[16];
4357 return NT_STATUS_INVALID_PARAMETER_MIX
;
4360 if (session
->smb1
.application_key
.length
!= 0) {
4362 * TODO: do not allow this...
4364 * return NT_STATUS_INVALID_PARAMETER_MIX;
4366 data_blob_clear_free(&session
->smb1
.application_key
);
4367 session
->smb1
.protected_key
= false;
4370 if (_session_key
.length
== 0) {
4371 return NT_STATUS_OK
;
4374 ZERO_STRUCT(session_key
);
4375 memcpy(session_key
, _session_key
.data
,
4376 MIN(_session_key
.length
, sizeof(session_key
)));
4378 session
->smb1
.application_key
= data_blob_talloc(session
,
4380 sizeof(session_key
));
4381 ZERO_STRUCT(session_key
);
4382 if (session
->smb1
.application_key
.data
== NULL
) {
4383 return NT_STATUS_NO_MEMORY
;
4386 session
->smb1
.protected_key
= false;
4388 return NT_STATUS_OK
;
4391 NTSTATUS
smb1cli_session_protect_session_key(struct smbXcli_session
*session
)
4393 if (session
->smb1
.protected_key
) {
4394 /* already protected */
4395 return NT_STATUS_OK
;
4398 if (session
->smb1
.application_key
.length
!= 16) {
4399 return NT_STATUS_INVALID_PARAMETER_MIX
;
4402 smb_key_derivation(session
->smb1
.application_key
.data
,
4403 session
->smb1
.application_key
.length
,
4404 session
->smb1
.application_key
.data
);
4406 session
->smb1
.protected_key
= true;
4408 return NT_STATUS_OK
;
4411 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4413 struct smbXcli_conn
*conn
= session
->conn
;
4414 uint8_t security_mode
= 0;
4417 return security_mode
;
4420 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4421 if (conn
->mandatory_signing
) {
4422 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4425 return security_mode
;
4428 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4430 return session
->smb2
->session_id
;
4433 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4435 return session
->smb2
->session_flags
;
4438 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4439 uint64_t session_id
,
4440 uint16_t session_flags
)
4442 session
->smb2
->session_id
= session_id
;
4443 session
->smb2
->session_flags
= session_flags
;
4446 void smb2cli_session_increment_channel_sequence(struct smbXcli_session
*session
)
4448 session
->smb2
->channel_sequence
+= 1;
4451 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4452 const DATA_BLOB _session_key
,
4453 const struct iovec
*recv_iov
)
4455 struct smbXcli_conn
*conn
= session
->conn
;
4456 uint16_t no_sign_flags
;
4457 uint8_t session_key
[16];
4461 return NT_STATUS_INVALID_PARAMETER_MIX
;
4464 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4466 if (session
->smb2
->session_flags
& no_sign_flags
) {
4467 session
->smb2
->should_sign
= false;
4468 return NT_STATUS_OK
;
4471 if (session
->smb2
->signing_key
.length
!= 0) {
4472 return NT_STATUS_INVALID_PARAMETER_MIX
;
4475 ZERO_STRUCT(session_key
);
4476 memcpy(session_key
, _session_key
.data
,
4477 MIN(_session_key
.length
, sizeof(session_key
)));
4479 session
->smb2
->signing_key
= data_blob_talloc(session
,
4481 sizeof(session_key
));
4482 if (session
->smb2
->signing_key
.data
== NULL
) {
4483 ZERO_STRUCT(session_key
);
4484 return NT_STATUS_NO_MEMORY
;
4487 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4488 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4489 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4491 smb2_key_derivation(session_key
, sizeof(session_key
),
4492 label
.data
, label
.length
,
4493 context
.data
, context
.length
,
4494 session
->smb2
->signing_key
.data
);
4497 session
->smb2
->encryption_key
= data_blob_dup_talloc(session
,
4498 session
->smb2
->signing_key
);
4499 if (session
->smb2
->encryption_key
.data
== NULL
) {
4500 ZERO_STRUCT(session_key
);
4501 return NT_STATUS_NO_MEMORY
;
4504 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4505 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4506 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4508 smb2_key_derivation(session_key
, sizeof(session_key
),
4509 label
.data
, label
.length
,
4510 context
.data
, context
.length
,
4511 session
->smb2
->encryption_key
.data
);
4514 session
->smb2
->decryption_key
= data_blob_dup_talloc(session
,
4515 session
->smb2
->signing_key
);
4516 if (session
->smb2
->decryption_key
.data
== NULL
) {
4517 ZERO_STRUCT(session_key
);
4518 return NT_STATUS_NO_MEMORY
;
4521 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4522 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4523 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4525 smb2_key_derivation(session_key
, sizeof(session_key
),
4526 label
.data
, label
.length
,
4527 context
.data
, context
.length
,
4528 session
->smb2
->decryption_key
.data
);
4531 session
->smb2
->application_key
= data_blob_dup_talloc(session
,
4532 session
->smb2
->signing_key
);
4533 if (session
->smb2
->application_key
.data
== NULL
) {
4534 ZERO_STRUCT(session_key
);
4535 return NT_STATUS_NO_MEMORY
;
4538 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4539 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4540 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4542 smb2_key_derivation(session_key
, sizeof(session_key
),
4543 label
.data
, label
.length
,
4544 context
.data
, context
.length
,
4545 session
->smb2
->application_key
.data
);
4547 ZERO_STRUCT(session_key
);
4549 session
->smb2_channel
.signing_key
= data_blob_dup_talloc(session
,
4550 session
->smb2
->signing_key
);
4551 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
4552 return NT_STATUS_NO_MEMORY
;
4555 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
4556 session
->conn
->protocol
,
4558 if (!NT_STATUS_IS_OK(status
)) {
4562 session
->smb2
->should_sign
= false;
4563 session
->smb2
->should_encrypt
= false;
4565 if (conn
->desire_signing
) {
4566 session
->smb2
->should_sign
= true;
4569 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4570 session
->smb2
->should_sign
= true;
4573 if (session
->smb2
->session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
4574 session
->smb2
->should_encrypt
= true;
4577 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
4578 session
->smb2
->should_encrypt
= false;
4581 if (!(conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
4582 session
->smb2
->should_encrypt
= false;
4585 generate_random_buffer((uint8_t *)&session
->smb2
->nonce_high
,
4586 sizeof(session
->smb2
->nonce_high
));
4587 session
->smb2
->nonce_low
= 1;
4589 return NT_STATUS_OK
;
4592 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4593 struct smbXcli_session
*session1
,
4594 struct smbXcli_conn
*conn
,
4595 struct smbXcli_session
**_session2
)
4597 struct smbXcli_session
*session2
;
4599 if (session1
->smb2
->signing_key
.length
== 0) {
4600 return NT_STATUS_INVALID_PARAMETER_MIX
;
4604 return NT_STATUS_INVALID_PARAMETER_MIX
;
4607 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4608 if (session2
== NULL
) {
4609 return NT_STATUS_NO_MEMORY
;
4611 session2
->smb2
= talloc_reference(session2
, session1
->smb2
);
4612 if (session2
->smb2
== NULL
) {
4613 talloc_free(session2
);
4614 return NT_STATUS_NO_MEMORY
;
4617 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4618 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4619 session2
->conn
= conn
;
4621 *_session2
= session2
;
4622 return NT_STATUS_OK
;
4625 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4626 const DATA_BLOB _channel_key
,
4627 const struct iovec
*recv_iov
)
4629 struct smbXcli_conn
*conn
= session
->conn
;
4630 uint8_t channel_key
[16];
4634 return NT_STATUS_INVALID_PARAMETER_MIX
;
4637 if (session
->smb2_channel
.signing_key
.length
!= 0) {
4638 return NT_STATUS_INVALID_PARAMETER_MIX
;
4641 ZERO_STRUCT(channel_key
);
4642 memcpy(channel_key
, _channel_key
.data
,
4643 MIN(_channel_key
.length
, sizeof(channel_key
)));
4645 session
->smb2_channel
.signing_key
= data_blob_talloc(session
,
4647 sizeof(channel_key
));
4648 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
4649 ZERO_STRUCT(channel_key
);
4650 return NT_STATUS_NO_MEMORY
;
4653 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4654 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4655 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4657 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4658 label
.data
, label
.length
,
4659 context
.data
, context
.length
,
4660 session
->smb2_channel
.signing_key
.data
);
4662 ZERO_STRUCT(channel_key
);
4664 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
4665 session
->conn
->protocol
,
4667 if (!NT_STATUS_IS_OK(status
)) {
4671 return NT_STATUS_OK
;
4674 struct smbXcli_tcon
*smbXcli_tcon_create(TALLOC_CTX
*mem_ctx
)
4676 struct smbXcli_tcon
*tcon
;
4678 tcon
= talloc_zero(mem_ctx
, struct smbXcli_tcon
);
4686 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4688 return tcon
->smb1
.tcon_id
;
4691 void smb1cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint16_t tcon_id
)
4693 tcon
->smb1
.tcon_id
= tcon_id
;
4696 bool smb1cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4698 uint16_t optional_support
,
4699 uint32_t maximal_access
,
4700 uint32_t guest_maximal_access
,
4701 const char *service
,
4702 const char *fs_type
)
4704 tcon
->smb1
.tcon_id
= tcon_id
;
4705 tcon
->smb1
.optional_support
= optional_support
;
4706 tcon
->smb1
.maximal_access
= maximal_access
;
4707 tcon
->smb1
.guest_maximal_access
= guest_maximal_access
;
4709 TALLOC_FREE(tcon
->smb1
.service
);
4710 tcon
->smb1
.service
= talloc_strdup(tcon
, service
);
4711 if (service
!= NULL
&& tcon
->smb1
.service
== NULL
) {
4715 TALLOC_FREE(tcon
->smb1
.fs_type
);
4716 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, fs_type
);
4717 if (fs_type
!= NULL
&& tcon
->smb1
.fs_type
== NULL
) {
4724 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4726 return tcon
->smb2
.tcon_id
;
4729 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon
*tcon
)
4731 return tcon
->smb2
.capabilities
;
4734 void smb2cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4735 struct smbXcli_session
*session
,
4739 uint32_t capabilities
,
4740 uint32_t maximal_access
)
4742 tcon
->smb2
.tcon_id
= tcon_id
;
4743 tcon
->smb2
.type
= type
;
4744 tcon
->smb2
.flags
= flags
;
4745 tcon
->smb2
.capabilities
= capabilities
;
4746 tcon
->smb2
.maximal_access
= maximal_access
;
4748 tcon
->smb2
.should_encrypt
= false;
4750 if (session
== NULL
) {
4754 tcon
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
4756 if (flags
& SMB2_SHAREFLAG_ENCRYPT_DATA
) {
4757 tcon
->smb2
.should_encrypt
= true;