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
;
246 uint64_t encryption_session_id
;
248 bool signing_skipped
;
254 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
257 * NT_STATUS_OK, means we do not notify the callers
259 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
261 while (conn
->sessions
) {
262 conn
->sessions
->conn
= NULL
;
263 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
266 if (conn
->smb1
.trans_enc
) {
267 TALLOC_FREE(conn
->smb1
.trans_enc
);
273 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
275 const char *remote_name
,
276 enum smb_signing_setting signing_state
,
277 uint32_t smb1_capabilities
,
278 struct GUID
*client_guid
,
279 uint32_t smb2_capabilities
)
281 struct smbXcli_conn
*conn
= NULL
;
283 struct sockaddr
*sa
= NULL
;
287 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
293 conn
->write_fd
= dup(fd
);
294 if (conn
->write_fd
== -1) {
298 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
299 if (conn
->remote_name
== NULL
) {
304 ss
= (void *)&conn
->local_ss
;
305 sa
= (struct sockaddr
*)ss
;
306 sa_length
= sizeof(conn
->local_ss
);
307 ret
= getsockname(fd
, sa
, &sa_length
);
311 ss
= (void *)&conn
->remote_ss
;
312 sa
= (struct sockaddr
*)ss
;
313 sa_length
= sizeof(conn
->remote_ss
);
314 ret
= getpeername(fd
, sa
, &sa_length
);
319 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
320 if (conn
->outgoing
== NULL
) {
323 conn
->pending
= NULL
;
325 conn
->protocol
= PROTOCOL_NONE
;
327 switch (signing_state
) {
328 case SMB_SIGNING_OFF
:
330 conn
->allow_signing
= false;
331 conn
->desire_signing
= false;
332 conn
->mandatory_signing
= false;
334 case SMB_SIGNING_DEFAULT
:
335 case SMB_SIGNING_IF_REQUIRED
:
336 /* if the server requires it */
337 conn
->allow_signing
= true;
338 conn
->desire_signing
= false;
339 conn
->mandatory_signing
= false;
341 case SMB_SIGNING_REQUIRED
:
343 conn
->allow_signing
= true;
344 conn
->desire_signing
= true;
345 conn
->mandatory_signing
= true;
349 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
350 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
352 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
353 conn
->smb1
.max_xmit
= 1024;
357 /* initialise signing */
358 conn
->smb1
.signing
= smb_signing_init(conn
,
360 conn
->desire_signing
,
361 conn
->mandatory_signing
);
362 if (!conn
->smb1
.signing
) {
366 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
367 if (conn
->mandatory_signing
) {
368 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
371 conn
->smb2
.client
.guid
= *client_guid
;
373 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
375 conn
->smb2
.cur_credits
= 1;
376 conn
->smb2
.max_credits
= 0;
378 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
382 if (conn
->write_fd
!= -1) {
383 close(conn
->write_fd
);
389 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
395 if (conn
->read_fd
== -1) {
402 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
404 return conn
->protocol
;
407 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
409 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
413 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
420 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
422 set_socket_options(conn
->read_fd
, options
);
425 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
427 return &conn
->local_ss
;
430 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
432 return &conn
->remote_ss
;
435 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
437 return conn
->remote_name
;
440 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
442 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
449 return conn
->smb1
.server
.max_mux
;
452 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
454 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
455 return conn
->smb2
.server
.system_time
;
458 return conn
->smb1
.server
.system_time
;
461 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
463 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
464 return &conn
->smb2
.server
.gss_blob
;
467 return &conn
->smb1
.server
.gss_blob
;
470 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
472 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
473 return &conn
->smb2
.server
.guid
;
476 return &conn
->smb1
.server
.guid
;
479 struct smbXcli_conn_samba_suicide_state
{
480 struct smbXcli_conn
*conn
;
485 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
487 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
488 struct tevent_context
*ev
,
489 struct smbXcli_conn
*conn
,
492 struct tevent_req
*req
, *subreq
;
493 struct smbXcli_conn_samba_suicide_state
*state
;
495 req
= tevent_req_create(mem_ctx
, &state
,
496 struct smbXcli_conn_samba_suicide_state
);
501 SIVAL(state
->buf
, 4, 0x74697865);
502 SCVAL(state
->buf
, 8, exitcode
);
503 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
505 state
->iov
.iov_base
= state
->buf
;
506 state
->iov
.iov_len
= sizeof(state
->buf
);
508 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
509 false, &state
->iov
, 1);
510 if (tevent_req_nomem(subreq
, req
)) {
511 return tevent_req_post(req
, ev
);
513 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
517 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
519 struct tevent_req
*req
= tevent_req_callback_data(
520 subreq
, struct tevent_req
);
521 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
522 req
, struct smbXcli_conn_samba_suicide_state
);
526 nwritten
= writev_recv(subreq
, &err
);
528 if (nwritten
== -1) {
529 NTSTATUS status
= map_nt_error_from_unix_common(err
);
530 smbXcli_conn_disconnect(state
->conn
, status
);
533 tevent_req_done(req
);
536 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
538 return tevent_req_simple_recv_ntstatus(req
);
541 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
544 TALLOC_CTX
*frame
= talloc_stackframe();
545 struct tevent_context
*ev
;
546 struct tevent_req
*req
;
547 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
550 if (smbXcli_conn_has_async_calls(conn
)) {
552 * Can't use sync call while an async call is in flight
554 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
557 ev
= tevent_context_init(frame
);
561 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
565 ok
= tevent_req_poll(req
, ev
);
567 status
= map_nt_error_from_unix_common(errno
);
570 status
= smbXcli_conn_samba_suicide_recv(req
);
576 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
578 return conn
->smb1
.capabilities
;
581 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
583 return conn
->smb1
.max_xmit
;
586 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
588 return conn
->smb1
.server
.session_key
;
591 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
593 return conn
->smb1
.server
.challenge
;
596 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
598 return conn
->smb1
.server
.security_mode
;
601 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
603 return conn
->smb1
.server
.readbraw
;
606 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
608 return conn
->smb1
.server
.writebraw
;
611 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
613 return conn
->smb1
.server
.lockread
;
616 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
618 return conn
->smb1
.server
.writeunlock
;
621 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
623 return conn
->smb1
.server
.time_zone
;
626 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
627 const DATA_BLOB user_session_key
,
628 const DATA_BLOB response
)
630 return smb_signing_activate(conn
->smb1
.signing
,
635 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
636 const uint8_t *buf
, uint32_t seqnum
)
638 const uint8_t *hdr
= buf
+ NBT_HDR_SIZE
;
639 size_t len
= smb_len_nbt(buf
);
641 return smb_signing_check_pdu(conn
->smb1
.signing
, hdr
, len
, seqnum
);
644 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
646 return smb_signing_is_active(conn
->smb1
.signing
);
649 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
650 struct smb_trans_enc_state
*es
)
652 /* Replace the old state, if any. */
653 if (conn
->smb1
.trans_enc
) {
654 TALLOC_FREE(conn
->smb1
.trans_enc
);
656 conn
->smb1
.trans_enc
= es
;
659 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
661 return common_encryption_on(conn
->smb1
.trans_enc
);
665 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
667 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
668 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
670 if (NT_STATUS_IS_OK(status
)) {
674 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
678 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
682 * Is the SMB command able to hold an AND_X successor
683 * @param[in] cmd The SMB command in question
684 * @retval Can we add a chained request after "cmd"?
686 bool smb1cli_is_andx_req(uint8_t cmd
)
706 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
708 size_t num_pending
= talloc_array_length(conn
->pending
);
714 result
= conn
->smb1
.mid
++;
715 if ((result
== 0) || (result
== 0xffff)) {
719 for (i
=0; i
<num_pending
; i
++) {
720 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
725 if (i
== num_pending
) {
731 void smbXcli_req_unset_pending(struct tevent_req
*req
)
733 struct smbXcli_req_state
*state
=
735 struct smbXcli_req_state
);
736 struct smbXcli_conn
*conn
= state
->conn
;
737 size_t num_pending
= talloc_array_length(conn
->pending
);
740 if (state
->smb1
.mid
!= 0) {
742 * This is a [nt]trans[2] request which waits
743 * for more than one reply.
748 talloc_set_destructor(req
, NULL
);
750 if (num_pending
== 1) {
752 * The pending read_smb tevent_req is a child of
753 * conn->pending. So if nothing is pending anymore, we need to
754 * delete the socket read fde.
756 TALLOC_FREE(conn
->pending
);
757 conn
->read_smb_req
= NULL
;
761 for (i
=0; i
<num_pending
; i
++) {
762 if (req
== conn
->pending
[i
]) {
766 if (i
== num_pending
) {
768 * Something's seriously broken. Just returning here is the
769 * right thing nevertheless, the point of this routine is to
770 * remove ourselves from conn->pending.
776 * Remove ourselves from the conn->pending array
778 for (; i
< (num_pending
- 1); i
++) {
779 conn
->pending
[i
] = conn
->pending
[i
+1];
783 * No NULL check here, we're shrinking by sizeof(void *), and
784 * talloc_realloc just adjusts the size for this.
786 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
791 static int smbXcli_req_destructor(struct tevent_req
*req
)
793 struct smbXcli_req_state
*state
=
795 struct smbXcli_req_state
);
798 * Make sure we really remove it from
799 * the pending array on destruction.
802 smbXcli_req_unset_pending(req
);
806 static bool smb1cli_req_cancel(struct tevent_req
*req
);
807 static bool smb2cli_req_cancel(struct tevent_req
*req
);
809 static bool smbXcli_req_cancel(struct tevent_req
*req
)
811 struct smbXcli_req_state
*state
=
813 struct smbXcli_req_state
);
815 if (!smbXcli_conn_is_connected(state
->conn
)) {
819 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
823 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
824 return smb2cli_req_cancel(req
);
827 return smb1cli_req_cancel(req
);
830 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
832 bool smbXcli_req_set_pending(struct tevent_req
*req
)
834 struct smbXcli_req_state
*state
=
836 struct smbXcli_req_state
);
837 struct smbXcli_conn
*conn
;
838 struct tevent_req
**pending
;
843 if (!smbXcli_conn_is_connected(conn
)) {
847 num_pending
= talloc_array_length(conn
->pending
);
849 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
851 if (pending
== NULL
) {
854 pending
[num_pending
] = req
;
855 conn
->pending
= pending
;
856 talloc_set_destructor(req
, smbXcli_req_destructor
);
857 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
859 if (!smbXcli_conn_receive_next(conn
)) {
861 * the caller should notify the current request
863 * And all other pending requests get notified
864 * by smbXcli_conn_disconnect().
866 smbXcli_req_unset_pending(req
);
867 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
874 static void smbXcli_conn_received(struct tevent_req
*subreq
);
876 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
878 size_t num_pending
= talloc_array_length(conn
->pending
);
879 struct tevent_req
*req
;
880 struct smbXcli_req_state
*state
;
882 if (conn
->read_smb_req
!= NULL
) {
886 if (num_pending
== 0) {
887 if (conn
->smb2
.mid
< UINT64_MAX
) {
888 /* no more pending requests, so we are done for now */
893 * If there are no more SMB2 requests possible,
894 * because we are out of message ids,
895 * we need to disconnect.
897 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
901 req
= conn
->pending
[0];
902 state
= tevent_req_data(req
, struct smbXcli_req_state
);
905 * We're the first ones, add the read_smb request that waits for the
906 * answer from the server
908 conn
->read_smb_req
= read_smb_send(conn
->pending
,
911 if (conn
->read_smb_req
== NULL
) {
914 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
918 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
920 struct smbXcli_session
*session
;
922 tevent_queue_stop(conn
->outgoing
);
924 if (conn
->read_fd
!= -1) {
925 close(conn
->read_fd
);
927 if (conn
->write_fd
!= -1) {
928 close(conn
->write_fd
);
933 session
= conn
->sessions
;
934 if (talloc_array_length(conn
->pending
) == 0) {
936 * if we do not have pending requests
937 * there is no need to update the channel_sequence
941 for (; session
; session
= session
->next
) {
942 smb2cli_session_increment_channel_sequence(session
);
946 * Cancel all pending requests. We do not do a for-loop walking
947 * conn->pending because that array changes in
948 * smbXcli_req_unset_pending.
950 while (talloc_array_length(conn
->pending
) > 0) {
951 struct tevent_req
*req
;
952 struct smbXcli_req_state
*state
;
953 struct tevent_req
**chain
;
957 req
= conn
->pending
[0];
958 state
= tevent_req_data(req
, struct smbXcli_req_state
);
960 if (state
->smb1
.chained_requests
== NULL
) {
962 * We're dead. No point waiting for trans2
967 smbXcli_req_unset_pending(req
);
969 if (NT_STATUS_IS_OK(status
)) {
970 /* do not notify the callers */
975 * we need to defer the callback, because we may notify
976 * more then one caller.
978 tevent_req_defer_callback(req
, state
->ev
);
979 tevent_req_nterror(req
, status
);
983 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
984 num_chained
= talloc_array_length(chain
);
986 for (i
=0; i
<num_chained
; i
++) {
988 state
= tevent_req_data(req
, struct smbXcli_req_state
);
991 * We're dead. No point waiting for trans2
996 smbXcli_req_unset_pending(req
);
998 if (NT_STATUS_IS_OK(status
)) {
999 /* do not notify the callers */
1004 * we need to defer the callback, because we may notify
1005 * more than one caller.
1007 tevent_req_defer_callback(req
, state
->ev
);
1008 tevent_req_nterror(req
, status
);
1015 * Fetch a smb request's mid. Only valid after the request has been sent by
1016 * smb1cli_req_send().
1018 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
1020 struct smbXcli_req_state
*state
=
1021 tevent_req_data(req
,
1022 struct smbXcli_req_state
);
1024 if (state
->smb1
.mid
!= 0) {
1025 return state
->smb1
.mid
;
1028 return SVAL(state
->smb1
.hdr
, HDR_MID
);
1031 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
1033 struct smbXcli_req_state
*state
=
1034 tevent_req_data(req
,
1035 struct smbXcli_req_state
);
1037 state
->smb1
.mid
= mid
;
1040 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
1042 struct smbXcli_req_state
*state
=
1043 tevent_req_data(req
,
1044 struct smbXcli_req_state
);
1046 return state
->smb1
.seqnum
;
1049 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
1051 struct smbXcli_req_state
*state
=
1052 tevent_req_data(req
,
1053 struct smbXcli_req_state
);
1055 state
->smb1
.seqnum
= seqnum
;
1058 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1062 for (i
=0; i
<count
; i
++) {
1063 result
+= iov
[i
].iov_len
;
1068 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1069 const struct iovec
*iov
,
1072 size_t len
= smbXcli_iov_len(iov
, count
);
1077 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1082 for (i
=0; i
<count
; i
++) {
1083 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1084 copied
+= iov
[i
].iov_len
;
1089 static void smb1cli_req_flags(enum protocol_types protocol
,
1090 uint32_t smb1_capabilities
,
1091 uint8_t smb_command
,
1092 uint8_t additional_flags
,
1093 uint8_t clear_flags
,
1095 uint16_t additional_flags2
,
1096 uint16_t clear_flags2
,
1100 uint16_t flags2
= 0;
1102 if (protocol
>= PROTOCOL_LANMAN1
) {
1103 flags
|= FLAG_CASELESS_PATHNAMES
;
1104 flags
|= FLAG_CANONICAL_PATHNAMES
;
1107 if (protocol
>= PROTOCOL_LANMAN2
) {
1108 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1109 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1112 if (protocol
>= PROTOCOL_NT1
) {
1113 flags2
|= FLAGS2_IS_LONG_NAME
;
1115 if (smb1_capabilities
& CAP_UNICODE
) {
1116 flags2
|= FLAGS2_UNICODE_STRINGS
;
1118 if (smb1_capabilities
& CAP_STATUS32
) {
1119 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1121 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1122 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1126 flags
|= additional_flags
;
1127 flags
&= ~clear_flags
;
1128 flags2
|= additional_flags2
;
1129 flags2
&= ~clear_flags2
;
1135 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1137 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1139 struct smbXcli_req_state
*state
=
1140 tevent_req_data(req
,
1141 struct smbXcli_req_state
);
1146 struct tevent_req
*subreq
;
1149 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1150 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1151 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1152 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1153 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1155 subreq
= smb1cli_req_create(state
, state
->ev
,
1165 0, NULL
); /* bytes */
1166 if (subreq
== NULL
) {
1169 smb1cli_req_set_mid(subreq
, mid
);
1171 status
= smb1cli_req_chain_submit(&subreq
, 1);
1172 if (!NT_STATUS_IS_OK(status
)) {
1173 TALLOC_FREE(subreq
);
1176 smb1cli_req_set_mid(subreq
, 0);
1178 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1183 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1185 /* we do not care about the result */
1186 TALLOC_FREE(subreq
);
1189 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1190 struct tevent_context
*ev
,
1191 struct smbXcli_conn
*conn
,
1192 uint8_t smb_command
,
1193 uint8_t additional_flags
,
1194 uint8_t clear_flags
,
1195 uint16_t additional_flags2
,
1196 uint16_t clear_flags2
,
1197 uint32_t timeout_msec
,
1199 struct smbXcli_tcon
*tcon
,
1200 struct smbXcli_session
*session
,
1201 uint8_t wct
, uint16_t *vwv
,
1203 struct iovec
*bytes_iov
)
1205 struct tevent_req
*req
;
1206 struct smbXcli_req_state
*state
;
1208 uint16_t flags2
= 0;
1212 if (iov_count
> MAX_SMB_IOV
) {
1214 * Should not happen :-)
1219 req
= tevent_req_create(mem_ctx
, &state
,
1220 struct smbXcli_req_state
);
1226 state
->session
= session
;
1230 uid
= session
->smb1
.session_id
;
1234 tid
= tcon
->smb1
.tcon_id
;
1237 state
->smb1
.recv_cmd
= 0xFF;
1238 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1239 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1240 if (state
->smb1
.recv_iov
== NULL
) {
1245 smb1cli_req_flags(conn
->protocol
,
1246 conn
->smb1
.capabilities
,
1255 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1256 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1257 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1258 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1259 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1260 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1261 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1262 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1263 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1264 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1265 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1267 state
->smb1
.vwv
= vwv
;
1269 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1271 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1272 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1273 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1274 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1275 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1276 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1277 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1278 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1280 if (iov_count
!= 0) {
1281 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1282 iov_count
* sizeof(*bytes_iov
));
1284 state
->smb1
.iov_count
= iov_count
+ 4;
1286 if (timeout_msec
> 0) {
1287 struct timeval endtime
;
1289 endtime
= timeval_current_ofs_msec(timeout_msec
);
1290 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1295 switch (smb_command
) {
1299 state
->one_way
= true;
1302 state
->one_way
= true;
1303 state
->smb1
.one_way_seqnum
= true;
1307 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1308 state
->one_way
= true;
1316 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1317 struct iovec
*iov
, int iov_count
,
1319 bool one_way_seqnum
)
1321 TALLOC_CTX
*frame
= NULL
;
1325 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1326 * iovec directly. MD5Update would do that just fine.
1329 if (iov_count
< 4) {
1330 return NT_STATUS_INVALID_PARAMETER_MIX
;
1332 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1333 return NT_STATUS_INVALID_PARAMETER_MIX
;
1335 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1336 return NT_STATUS_INVALID_PARAMETER_MIX
;
1338 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1339 return NT_STATUS_INVALID_PARAMETER_MIX
;
1341 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1342 return NT_STATUS_INVALID_PARAMETER_MIX
;
1345 frame
= talloc_stackframe();
1347 buf
= smbXcli_iov_concat(frame
, &iov
[1], iov_count
- 1);
1349 return NT_STATUS_NO_MEMORY
;
1352 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1354 smb_signing_sign_pdu(conn
->smb1
.signing
,
1355 buf
, talloc_get_size(buf
),
1357 memcpy(iov
[1].iov_base
, buf
, iov
[1].iov_len
);
1360 return NT_STATUS_OK
;
1363 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1364 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1365 TALLOC_CTX
*tmp_mem
,
1368 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1369 struct smbXcli_req_state
*state
,
1370 struct iovec
*iov
, int iov_count
)
1372 struct tevent_req
*subreq
;
1377 if (!smbXcli_conn_is_connected(state
->conn
)) {
1378 return NT_STATUS_CONNECTION_DISCONNECTED
;
1381 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1382 return NT_STATUS_REVISION_MISMATCH
;
1385 if (iov_count
< 4) {
1386 return NT_STATUS_INVALID_PARAMETER_MIX
;
1388 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1389 return NT_STATUS_INVALID_PARAMETER_MIX
;
1391 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1392 return NT_STATUS_INVALID_PARAMETER_MIX
;
1394 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1395 return NT_STATUS_INVALID_PARAMETER_MIX
;
1397 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1398 return NT_STATUS_INVALID_PARAMETER_MIX
;
1401 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1402 if (cmd
== SMBreadBraw
) {
1403 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1404 return NT_STATUS_INVALID_PARAMETER_MIX
;
1406 state
->conn
->smb1
.read_braw_req
= req
;
1409 if (state
->smb1
.mid
!= 0) {
1410 mid
= state
->smb1
.mid
;
1412 mid
= smb1cli_alloc_mid(state
->conn
);
1414 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1416 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1418 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1419 &state
->smb1
.seqnum
,
1420 state
->smb1
.one_way_seqnum
);
1422 if (!NT_STATUS_IS_OK(status
)) {
1427 * If we supported multiple encrytion contexts
1428 * here we'd look up based on tid.
1430 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1431 char *buf
, *enc_buf
;
1433 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1435 return NT_STATUS_NO_MEMORY
;
1437 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1438 (char *)buf
, &enc_buf
);
1440 if (!NT_STATUS_IS_OK(status
)) {
1441 DEBUG(0, ("Error in encrypting client message: %s\n",
1442 nt_errstr(status
)));
1445 buf
= (char *)talloc_memdup(state
, enc_buf
,
1446 smb_len_nbt(enc_buf
)+4);
1449 return NT_STATUS_NO_MEMORY
;
1451 iov
[0].iov_base
= (void *)buf
;
1452 iov
[0].iov_len
= talloc_get_size(buf
);
1456 if (state
->conn
->dispatch_incoming
== NULL
) {
1457 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1460 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1462 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1463 state
->conn
->write_fd
, false, iov
, iov_count
);
1464 if (subreq
== NULL
) {
1465 return NT_STATUS_NO_MEMORY
;
1467 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1468 return NT_STATUS_OK
;
1471 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1472 struct tevent_context
*ev
,
1473 struct smbXcli_conn
*conn
,
1474 uint8_t smb_command
,
1475 uint8_t additional_flags
,
1476 uint8_t clear_flags
,
1477 uint16_t additional_flags2
,
1478 uint16_t clear_flags2
,
1479 uint32_t timeout_msec
,
1481 struct smbXcli_tcon
*tcon
,
1482 struct smbXcli_session
*session
,
1483 uint8_t wct
, uint16_t *vwv
,
1485 const uint8_t *bytes
)
1487 struct tevent_req
*req
;
1491 iov
.iov_base
= discard_const_p(void, bytes
);
1492 iov
.iov_len
= num_bytes
;
1494 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1495 additional_flags
, clear_flags
,
1496 additional_flags2
, clear_flags2
,
1503 if (!tevent_req_is_in_progress(req
)) {
1504 return tevent_req_post(req
, ev
);
1506 status
= smb1cli_req_chain_submit(&req
, 1);
1507 if (tevent_req_nterror(req
, status
)) {
1508 return tevent_req_post(req
, ev
);
1513 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1515 struct tevent_req
*req
=
1516 tevent_req_callback_data(subreq
,
1518 struct smbXcli_req_state
*state
=
1519 tevent_req_data(req
,
1520 struct smbXcli_req_state
);
1524 nwritten
= writev_recv(subreq
, &err
);
1525 TALLOC_FREE(subreq
);
1526 if (nwritten
== -1) {
1527 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1528 smbXcli_conn_disconnect(state
->conn
, status
);
1532 if (state
->one_way
) {
1533 state
->inbuf
= NULL
;
1534 tevent_req_done(req
);
1538 if (!smbXcli_req_set_pending(req
)) {
1539 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1544 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1546 struct smbXcli_conn
*conn
=
1547 tevent_req_callback_data(subreq
,
1548 struct smbXcli_conn
);
1549 TALLOC_CTX
*frame
= talloc_stackframe();
1555 if (subreq
!= conn
->read_smb_req
) {
1556 DEBUG(1, ("Internal error: cli_smb_received called with "
1557 "unexpected subreq\n"));
1558 status
= NT_STATUS_INTERNAL_ERROR
;
1559 smbXcli_conn_disconnect(conn
, status
);
1563 conn
->read_smb_req
= NULL
;
1565 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1566 TALLOC_FREE(subreq
);
1567 if (received
== -1) {
1568 status
= map_nt_error_from_unix_common(err
);
1569 smbXcli_conn_disconnect(conn
, status
);
1574 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1576 if (NT_STATUS_IS_OK(status
)) {
1578 * We should not do any more processing
1579 * as the dispatch function called
1580 * tevent_req_done().
1583 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1585 * We got an error, so notify all pending requests
1587 smbXcli_conn_disconnect(conn
, status
);
1592 * We got NT_STATUS_RETRY, so we may ask for a
1593 * next incoming pdu.
1595 if (!smbXcli_conn_receive_next(conn
)) {
1596 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1600 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1601 struct iovec
**piov
, int *pnum_iov
)
1612 buflen
= smb_len_nbt(buf
);
1615 hdr
= buf
+ NBT_HDR_SIZE
;
1617 if (buflen
< MIN_SMB_SIZE
) {
1618 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1622 * This returns iovec elements in the following order:
1637 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1639 return NT_STATUS_NO_MEMORY
;
1641 iov
[0].iov_base
= hdr
;
1642 iov
[0].iov_len
= HDR_WCT
;
1645 cmd
= CVAL(hdr
, HDR_COM
);
1649 size_t len
= buflen
- taken
;
1651 struct iovec
*iov_tmp
;
1658 * we need at least WCT and BCC
1660 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1662 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1663 __location__
, (int)len
, (int)needed
));
1668 * Now we check if the specified words are there
1670 wct
= CVAL(hdr
, wct_ofs
);
1671 needed
+= wct
* sizeof(uint16_t);
1673 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1674 __location__
, (int)len
, (int)needed
));
1679 * Now we check if the specified bytes are there
1681 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1682 bcc
= SVAL(hdr
, bcc_ofs
);
1683 needed
+= bcc
* sizeof(uint8_t);
1685 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1686 __location__
, (int)len
, (int)needed
));
1691 * we allocate 2 iovec structures for words and bytes
1693 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1695 if (iov_tmp
== NULL
) {
1697 return NT_STATUS_NO_MEMORY
;
1700 cur
= &iov
[num_iov
];
1703 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1704 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1705 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1706 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1710 if (!smb1cli_is_andx_req(cmd
)) {
1712 * If the current command does not have AndX chanining
1718 if (wct
== 0 && bcc
== 0) {
1720 * An empty response also ends the chain,
1721 * most likely with an error.
1727 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1728 __location__
, (int)wct
, (int)cmd
));
1731 cmd
= CVAL(cur
[0].iov_base
, 0);
1734 * If it is the end of the chain we are also done.
1738 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1740 if (wct_ofs
< taken
) {
1741 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1743 if (wct_ofs
> buflen
) {
1744 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1748 * we consumed everything up to the start of the next
1754 remaining
= buflen
- taken
;
1756 if (remaining
> 0 && num_iov
>= 3) {
1758 * The last DATA block gets the remaining
1759 * bytes, this is needed to support
1760 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1762 iov
[num_iov
-1].iov_len
+= remaining
;
1766 *pnum_iov
= num_iov
;
1767 return NT_STATUS_OK
;
1771 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1774 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1775 TALLOC_CTX
*tmp_mem
,
1778 struct tevent_req
*req
;
1779 struct smbXcli_req_state
*state
;
1786 uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1787 size_t len
= smb_len_nbt(inbuf
);
1788 struct iovec
*iov
= NULL
;
1790 struct tevent_req
**chain
= NULL
;
1791 size_t num_chained
= 0;
1792 size_t num_responses
= 0;
1794 if (conn
->smb1
.read_braw_req
!= NULL
) {
1795 req
= conn
->smb1
.read_braw_req
;
1796 conn
->smb1
.read_braw_req
= NULL
;
1797 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1799 smbXcli_req_unset_pending(req
);
1801 if (state
->smb1
.recv_iov
== NULL
) {
1803 * For requests with more than
1804 * one response, we have to readd the
1807 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1810 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1811 return NT_STATUS_OK
;
1815 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inhdr
);
1816 state
->smb1
.recv_iov
[0].iov_len
= len
;
1817 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1818 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1820 state
->smb1
.recv_cmd
= SMBreadBraw
;
1821 state
->smb1
.recv_status
= NT_STATUS_OK
;
1822 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1824 tevent_req_done(req
);
1825 return NT_STATUS_OK
;
1828 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1829 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1830 DEBUG(10, ("Got non-SMB PDU\n"));
1831 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1835 * If we supported multiple encrytion contexts
1836 * here we'd look up based on tid.
1838 if (common_encryption_on(conn
->smb1
.trans_enc
)
1839 && (CVAL(inbuf
, 0) == 0)) {
1840 uint16_t enc_ctx_num
;
1842 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1843 if (!NT_STATUS_IS_OK(status
)) {
1844 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1845 nt_errstr(status
)));
1849 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1850 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1852 conn
->smb1
.trans_enc
->enc_ctx_num
));
1853 return NT_STATUS_INVALID_HANDLE
;
1856 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1858 if (!NT_STATUS_IS_OK(status
)) {
1859 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1860 nt_errstr(status
)));
1863 inhdr
= inbuf
+ NBT_HDR_SIZE
;
1864 len
= smb_len_nbt(inbuf
);
1867 mid
= SVAL(inhdr
, HDR_MID
);
1868 num_pending
= talloc_array_length(conn
->pending
);
1870 for (i
=0; i
<num_pending
; i
++) {
1871 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1875 if (i
== num_pending
) {
1876 /* Dump unexpected reply */
1877 return NT_STATUS_RETRY
;
1880 oplock_break
= false;
1882 if (mid
== 0xffff) {
1884 * Paranoia checks that this is really an oplock break request.
1886 oplock_break
= (len
== 51); /* hdr + 8 words */
1887 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1888 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1889 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1890 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1892 if (!oplock_break
) {
1893 /* Dump unexpected reply */
1894 return NT_STATUS_RETRY
;
1898 req
= conn
->pending
[i
];
1899 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1901 if (!oplock_break
/* oplock breaks are not signed */
1902 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1903 inhdr
, len
, state
->smb1
.seqnum
+1)) {
1904 DEBUG(10, ("cli_check_sign_mac failed\n"));
1905 return NT_STATUS_ACCESS_DENIED
;
1908 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1910 if (!NT_STATUS_IS_OK(status
)) {
1911 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1912 nt_errstr(status
)));
1916 cmd
= CVAL(inhdr
, HDR_COM
);
1917 status
= smb1cli_pull_raw_error(inhdr
);
1919 if (state
->smb1
.chained_requests
== NULL
) {
1921 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1924 smbXcli_req_unset_pending(req
);
1926 if (state
->smb1
.recv_iov
== NULL
) {
1928 * For requests with more than
1929 * one response, we have to readd the
1932 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1935 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1936 return NT_STATUS_OK
;
1940 state
->smb1
.recv_cmd
= cmd
;
1941 state
->smb1
.recv_status
= status
;
1942 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1944 state
->smb1
.recv_iov
[0] = iov
[0];
1945 state
->smb1
.recv_iov
[1] = iov
[1];
1946 state
->smb1
.recv_iov
[2] = iov
[2];
1948 if (talloc_array_length(conn
->pending
) == 0) {
1949 tevent_req_done(req
);
1950 return NT_STATUS_OK
;
1953 tevent_req_defer_callback(req
, state
->ev
);
1954 tevent_req_done(req
);
1955 return NT_STATUS_RETRY
;
1958 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1959 num_chained
= talloc_array_length(chain
);
1960 num_responses
= (num_iov
- 1)/2;
1962 if (num_responses
> num_chained
) {
1963 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1966 for (i
=0; i
<num_chained
; i
++) {
1967 size_t iov_idx
= 1 + (i
*2);
1968 struct iovec
*cur
= &iov
[iov_idx
];
1972 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1974 smbXcli_req_unset_pending(req
);
1977 * as we finish multiple requests here
1978 * we need to defer the callbacks as
1979 * they could destroy our current stack state.
1981 tevent_req_defer_callback(req
, state
->ev
);
1983 if (i
>= num_responses
) {
1984 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1988 if (state
->smb1
.recv_iov
== NULL
) {
1990 * For requests with more than
1991 * one response, we have to readd the
1994 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1997 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2002 state
->smb1
.recv_cmd
= cmd
;
2004 if (i
== (num_responses
- 1)) {
2006 * The last request in the chain gets the status
2008 state
->smb1
.recv_status
= status
;
2010 cmd
= CVAL(cur
[0].iov_base
, 0);
2011 state
->smb1
.recv_status
= NT_STATUS_OK
;
2014 state
->inbuf
= inbuf
;
2017 * Note: here we use talloc_reference() in a way
2018 * that does not expose it to the caller.
2020 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
2021 if (tevent_req_nomem(inbuf_ref
, req
)) {
2025 /* copy the related buffers */
2026 state
->smb1
.recv_iov
[0] = iov
[0];
2027 state
->smb1
.recv_iov
[1] = cur
[0];
2028 state
->smb1
.recv_iov
[2] = cur
[1];
2030 tevent_req_done(req
);
2033 return NT_STATUS_RETRY
;
2036 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
2037 TALLOC_CTX
*mem_ctx
,
2038 struct iovec
**piov
,
2042 uint32_t *pvwv_offset
,
2043 uint32_t *pnum_bytes
,
2045 uint32_t *pbytes_offset
,
2047 const struct smb1cli_req_expected_response
*expected
,
2048 size_t num_expected
)
2050 struct smbXcli_req_state
*state
=
2051 tevent_req_data(req
,
2052 struct smbXcli_req_state
);
2053 NTSTATUS status
= NT_STATUS_OK
;
2054 struct iovec
*recv_iov
= NULL
;
2055 uint8_t *hdr
= NULL
;
2057 uint32_t vwv_offset
= 0;
2058 uint16_t *vwv
= NULL
;
2059 uint32_t num_bytes
= 0;
2060 uint32_t bytes_offset
= 0;
2061 uint8_t *bytes
= NULL
;
2063 bool found_status
= false;
2064 bool found_size
= false;
2078 if (pvwv_offset
!= NULL
) {
2081 if (pnum_bytes
!= NULL
) {
2084 if (pbytes
!= NULL
) {
2087 if (pbytes_offset
!= NULL
) {
2090 if (pinbuf
!= NULL
) {
2094 if (state
->inbuf
!= NULL
) {
2095 recv_iov
= state
->smb1
.recv_iov
;
2096 state
->smb1
.recv_iov
= NULL
;
2097 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2098 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2099 wct
= recv_iov
[1].iov_len
/2;
2100 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2101 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2102 num_bytes
= recv_iov
[2].iov_len
;
2103 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2104 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2108 if (tevent_req_is_nterror(req
, &status
)) {
2109 for (i
=0; i
< num_expected
; i
++) {
2110 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2111 found_status
= true;
2117 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2123 if (num_expected
== 0) {
2124 found_status
= true;
2128 status
= state
->smb1
.recv_status
;
2130 for (i
=0; i
< num_expected
; i
++) {
2131 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2135 found_status
= true;
2136 if (expected
[i
].wct
== 0) {
2141 if (expected
[i
].wct
== wct
) {
2147 if (!found_status
) {
2152 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2156 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2168 if (pvwv_offset
!= NULL
) {
2169 *pvwv_offset
= vwv_offset
;
2171 if (pnum_bytes
!= NULL
) {
2172 *pnum_bytes
= num_bytes
;
2174 if (pbytes
!= NULL
) {
2177 if (pbytes_offset
!= NULL
) {
2178 *pbytes_offset
= bytes_offset
;
2180 if (pinbuf
!= NULL
) {
2181 *pinbuf
= state
->inbuf
;
2187 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2194 for (i
=0; i
<num_reqs
; i
++) {
2195 struct smbXcli_req_state
*state
;
2196 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2197 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2198 state
->smb1
.iov_count
-2);
2199 wct_ofs
= (wct_ofs
+ 3) & ~3;
2204 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2206 struct smbXcli_req_state
*first_state
=
2207 tevent_req_data(reqs
[0],
2208 struct smbXcli_req_state
);
2209 struct smbXcli_req_state
*state
;
2211 size_t chain_padding
= 0;
2213 struct iovec
*iov
= NULL
;
2214 struct iovec
*this_iov
;
2218 if (num_reqs
== 1) {
2219 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2220 first_state
->smb1
.iov
,
2221 first_state
->smb1
.iov_count
);
2225 for (i
=0; i
<num_reqs
; i
++) {
2226 if (!tevent_req_is_in_progress(reqs
[i
])) {
2227 return NT_STATUS_INTERNAL_ERROR
;
2230 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2232 if (state
->smb1
.iov_count
< 4) {
2233 return NT_STATUS_INVALID_PARAMETER_MIX
;
2238 * The NBT and SMB header
2251 iovlen
+= state
->smb1
.iov_count
- 2;
2254 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2256 return NT_STATUS_NO_MEMORY
;
2259 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2260 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2261 if (first_state
->smb1
.chained_requests
== NULL
) {
2263 return NT_STATUS_NO_MEMORY
;
2266 wct_offset
= HDR_WCT
;
2269 for (i
=0; i
<num_reqs
; i
++) {
2270 size_t next_padding
= 0;
2273 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2275 if (i
< num_reqs
-1) {
2276 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2277 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2279 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2280 return NT_STATUS_INVALID_PARAMETER_MIX
;
2284 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2285 state
->smb1
.iov_count
-2) + 1;
2286 if ((wct_offset
% 4) != 0) {
2287 next_padding
= 4 - (wct_offset
% 4);
2289 wct_offset
+= next_padding
;
2290 vwv
= state
->smb1
.vwv
;
2292 if (i
< num_reqs
-1) {
2293 struct smbXcli_req_state
*next_state
=
2294 tevent_req_data(reqs
[i
+1],
2295 struct smbXcli_req_state
);
2296 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2298 SSVAL(vwv
+1, 0, wct_offset
);
2299 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2300 /* properly end the chain */
2301 SCVAL(vwv
+0, 0, 0xff);
2302 SCVAL(vwv
+0, 1, 0xff);
2308 * The NBT and SMB header
2310 this_iov
[0] = state
->smb1
.iov
[0];
2311 this_iov
[1] = state
->smb1
.iov
[1];
2315 * This one is a bit subtle. We have to add
2316 * chain_padding bytes between the requests, and we
2317 * have to also include the wct field of the
2318 * subsequent requests. We use the subsequent header
2319 * for the padding, it contains the wct field in its
2322 this_iov
[0].iov_len
= chain_padding
+1;
2323 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2324 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2325 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2330 * copy the words and bytes
2332 memcpy(this_iov
, state
->smb1
.iov
+2,
2333 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2334 this_iov
+= state
->smb1
.iov_count
- 2;
2335 chain_padding
= next_padding
;
2338 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2339 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2341 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2342 return NT_STATUS_INVALID_PARAMETER_MIX
;
2345 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2346 if (!NT_STATUS_IS_OK(status
)) {
2348 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2352 return NT_STATUS_OK
;
2355 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2357 return ((tevent_queue_length(conn
->outgoing
) != 0)
2358 || (talloc_array_length(conn
->pending
) != 0));
2361 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2363 return conn
->smb2
.server
.capabilities
;
2366 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2368 return conn
->smb2
.server
.security_mode
;
2371 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2373 return conn
->smb2
.server
.max_trans_size
;
2376 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2378 return conn
->smb2
.server
.max_read_size
;
2381 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2383 return conn
->smb2
.server
.max_write_size
;
2386 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2387 uint16_t max_credits
)
2389 conn
->smb2
.max_credits
= max_credits
;
2392 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2394 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2396 struct smbXcli_req_state
*state
=
2397 tevent_req_data(req
,
2398 struct smbXcli_req_state
);
2399 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2400 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2401 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2402 struct smbXcli_tcon
*tcon
= state
->tcon
;
2403 struct smbXcli_session
*session
= state
->session
;
2404 uint8_t *fixed
= state
->smb2
.pad
;
2405 uint16_t fixed_len
= 4;
2406 struct tevent_req
*subreq
;
2407 struct smbXcli_req_state
*substate
;
2410 SSVAL(fixed
, 0, 0x04);
2413 subreq
= smb2cli_req_create(state
, state
->ev
,
2421 if (subreq
== NULL
) {
2424 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2427 * clear everything but the SMB2_HDR_FLAG_ASYNC flag
2428 * e.g. if SMB2_HDR_FLAG_CHAINED is set we get INVALID_PARAMETER back
2430 flags
&= SMB2_HDR_FLAG_ASYNC
;
2432 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2436 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2437 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2438 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2440 status
= smb2cli_req_compound_submit(&subreq
, 1);
2441 if (!NT_STATUS_IS_OK(status
)) {
2442 TALLOC_FREE(subreq
);
2446 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2451 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2453 /* we do not care about the result */
2454 TALLOC_FREE(subreq
);
2457 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2458 struct tevent_context
*ev
,
2459 struct smbXcli_conn
*conn
,
2461 uint32_t additional_flags
,
2462 uint32_t clear_flags
,
2463 uint32_t timeout_msec
,
2464 struct smbXcli_tcon
*tcon
,
2465 struct smbXcli_session
*session
,
2466 const uint8_t *fixed
,
2471 struct tevent_req
*req
;
2472 struct smbXcli_req_state
*state
;
2476 bool use_channel_sequence
= false;
2477 uint16_t channel_sequence
= 0;
2479 req
= tevent_req_create(mem_ctx
, &state
,
2480 struct smbXcli_req_state
);
2487 state
->session
= session
;
2490 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_PERSISTENT_HANDLES
) {
2491 use_channel_sequence
= true;
2492 } else if (conn
->smb2
.server
.capabilities
& SMB2_CAP_MULTI_CHANNEL
) {
2493 use_channel_sequence
= true;
2497 uid
= session
->smb2
->session_id
;
2499 if (use_channel_sequence
) {
2500 channel_sequence
= session
->smb2
->channel_sequence
;
2503 state
->smb2
.should_sign
= session
->smb2
->should_sign
;
2504 state
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
2506 if (cmd
== SMB2_OP_SESSSETUP
&&
2507 session
->smb2
->signing_key
.length
!= 0) {
2508 state
->smb2
.should_sign
= true;
2511 if (cmd
== SMB2_OP_SESSSETUP
&&
2512 session
->smb2_channel
.signing_key
.length
== 0) {
2513 state
->smb2
.should_encrypt
= false;
2518 tid
= tcon
->smb2
.tcon_id
;
2520 if (tcon
->smb2
.should_encrypt
) {
2521 state
->smb2
.should_encrypt
= true;
2525 if (state
->smb2
.should_encrypt
) {
2526 state
->smb2
.should_sign
= false;
2529 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2530 if (state
->smb2
.recv_iov
== NULL
) {
2535 flags
|= additional_flags
;
2536 flags
&= ~clear_flags
;
2538 state
->smb2
.fixed
= fixed
;
2539 state
->smb2
.fixed_len
= fixed_len
;
2540 state
->smb2
.dyn
= dyn
;
2541 state
->smb2
.dyn_len
= dyn_len
;
2543 if (state
->smb2
.should_encrypt
) {
2544 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2545 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
2548 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2549 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2550 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2551 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CHANNEL_SEQUENCE
, channel_sequence
);
2552 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2553 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, 0); /* reserved */
2554 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2555 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2558 case SMB2_OP_CANCEL
:
2559 state
->one_way
= true;
2563 * If this is a dummy request, it will have
2564 * UINT64_MAX as message id.
2565 * If we send on break acknowledgement,
2566 * this gets overwritten later.
2568 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2572 if (timeout_msec
> 0) {
2573 struct timeval endtime
;
2575 endtime
= timeval_current_ofs_msec(timeout_msec
);
2576 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2584 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2586 struct smbXcli_req_state
*state
=
2587 tevent_req_data(req
,
2588 struct smbXcli_req_state
);
2590 state
->smb2
.notify_async
= true;
2593 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2594 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2595 TALLOC_CTX
*tmp_mem
,
2598 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2601 struct smbXcli_req_state
*state
;
2602 struct tevent_req
*subreq
;
2604 int i
, num_iov
, nbt_len
;
2606 const DATA_BLOB
*encryption_key
= NULL
;
2607 uint64_t encryption_session_id
= 0;
2610 * 1 for the nbt length, optional TRANSFORM
2611 * per request: HDR, fixed, dyn, padding
2612 * -1 because the last one does not need padding
2615 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 1 + 4*num_reqs
- 1);
2617 return NT_STATUS_NO_MEMORY
;
2624 * the session of the first request that requires encryption
2625 * specifies the encryption key.
2627 for (i
=0; i
<num_reqs
; i
++) {
2628 if (!tevent_req_is_in_progress(reqs
[i
])) {
2629 return NT_STATUS_INTERNAL_ERROR
;
2632 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2634 if (!smbXcli_conn_is_connected(state
->conn
)) {
2635 return NT_STATUS_CONNECTION_DISCONNECTED
;
2638 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2639 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2640 return NT_STATUS_REVISION_MISMATCH
;
2643 if (state
->session
== NULL
) {
2647 if (!state
->smb2
.should_encrypt
) {
2651 encryption_key
= &state
->session
->smb2
->encryption_key
;
2652 if (encryption_key
->length
== 0) {
2653 return NT_STATUS_INVALID_PARAMETER_MIX
;
2656 encryption_session_id
= state
->session
->smb2
->session_id
;
2659 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
2660 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
2663 SBVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2664 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
,
2665 state
->session
->smb2
->nonce_low
);
2666 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
2667 state
->session
->smb2
->nonce_high
);
2668 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
,
2669 encryption_session_id
);
2671 state
->session
->smb2
->nonce_low
+= 1;
2672 if (state
->session
->smb2
->nonce_low
== 0) {
2673 state
->session
->smb2
->nonce_high
+= 1;
2674 state
->session
->smb2
->nonce_low
+= 1;
2677 nbt_len
+= SMB2_TF_HDR_SIZE
;
2681 for (i
=0; i
<num_reqs
; i
++) {
2690 const DATA_BLOB
*signing_key
= NULL
;
2692 if (!tevent_req_is_in_progress(reqs
[i
])) {
2693 return NT_STATUS_INTERNAL_ERROR
;
2696 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2698 if (!smbXcli_conn_is_connected(state
->conn
)) {
2699 return NT_STATUS_CONNECTION_DISCONNECTED
;
2702 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2703 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2704 return NT_STATUS_REVISION_MISMATCH
;
2707 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2708 if (opcode
== SMB2_OP_CANCEL
) {
2712 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2714 return NT_STATUS_CONNECTION_ABORTED
;
2717 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2718 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2723 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2725 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2726 if (avail
< charge
) {
2727 return NT_STATUS_INTERNAL_ERROR
;
2731 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2732 credits
= state
->conn
->smb2
.max_credits
-
2733 state
->conn
->smb2
.cur_credits
;
2735 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2739 mid
= state
->conn
->smb2
.mid
;
2740 state
->conn
->smb2
.mid
+= charge
;
2741 state
->conn
->smb2
.cur_credits
-= charge
;
2743 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2744 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2746 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2747 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2750 if (state
->session
&& encryption_key
== NULL
) {
2752 * We prefer the channel signing key if it is
2755 if (state
->smb2
.should_sign
) {
2756 signing_key
= &state
->session
->smb2_channel
.signing_key
;
2760 * If it is a channel binding, we already have the main
2761 * signing key and try that one.
2763 if (signing_key
&& signing_key
->length
== 0) {
2764 signing_key
= &state
->session
->smb2
->signing_key
;
2768 * If we do not have any session key yet, we skip the
2769 * signing of SMB2_OP_SESSSETUP requests.
2771 if (signing_key
&& signing_key
->length
== 0) {
2777 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2778 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2781 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2782 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2785 if (state
->smb2
.dyn
!= NULL
) {
2786 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2787 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2791 reqlen
= sizeof(state
->smb2
.hdr
);
2792 reqlen
+= state
->smb2
.fixed_len
;
2793 reqlen
+= state
->smb2
.dyn_len
;
2795 if (i
< num_reqs
-1) {
2796 if ((reqlen
% 8) > 0) {
2797 uint8_t pad
= 8 - (reqlen
% 8);
2798 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2799 iov
[num_iov
].iov_len
= pad
;
2803 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2806 state
->smb2
.encryption_session_id
= encryption_session_id
;
2808 if (signing_key
!= NULL
) {
2811 status
= smb2_signing_sign_pdu(*signing_key
,
2812 state
->session
->conn
->protocol
,
2813 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2814 if (!NT_STATUS_IS_OK(status
)) {
2821 ret
= smbXcli_req_set_pending(reqs
[i
]);
2823 return NT_STATUS_NO_MEMORY
;
2827 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2828 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2829 iov
[0].iov_base
= state
->length_hdr
;
2830 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2832 if (encryption_key
!= NULL
) {
2834 size_t buflen
= nbt_len
- SMB2_TF_HDR_SIZE
;
2838 buf
= talloc_array(iov
, uint8_t, buflen
);
2840 return NT_STATUS_NO_MEMORY
;
2844 * We copy the buffers before encrypting them,
2845 * this is at least currently needed for the
2846 * to keep state->smb2.hdr.
2848 * Also the callers may expect there buffers
2851 for (vi
= tf_iov
+ 1; vi
< num_iov
; vi
++) {
2852 struct iovec
*v
= &iov
[vi
];
2853 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
2855 memcpy(buf
, o
, v
->iov_len
);
2856 v
->iov_base
= (void *)buf
;
2860 status
= smb2_signing_encrypt_pdu(*encryption_key
,
2861 state
->conn
->protocol
,
2862 &iov
[tf_iov
], num_iov
- tf_iov
);
2863 if (!NT_STATUS_IS_OK(status
)) {
2868 if (state
->conn
->dispatch_incoming
== NULL
) {
2869 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2872 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2873 state
->conn
->write_fd
, false, iov
, num_iov
);
2874 if (subreq
== NULL
) {
2875 return NT_STATUS_NO_MEMORY
;
2877 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2878 return NT_STATUS_OK
;
2881 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2883 struct smbXcli_req_state
*state
=
2884 tevent_req_data(req
,
2885 struct smbXcli_req_state
);
2887 state
->smb2
.credit_charge
= charge
;
2890 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2891 struct tevent_context
*ev
,
2892 struct smbXcli_conn
*conn
,
2894 uint32_t additional_flags
,
2895 uint32_t clear_flags
,
2896 uint32_t timeout_msec
,
2897 struct smbXcli_tcon
*tcon
,
2898 struct smbXcli_session
*session
,
2899 const uint8_t *fixed
,
2904 struct tevent_req
*req
;
2907 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2908 additional_flags
, clear_flags
,
2911 fixed
, fixed_len
, dyn
, dyn_len
);
2915 if (!tevent_req_is_in_progress(req
)) {
2916 return tevent_req_post(req
, ev
);
2918 status
= smb2cli_req_compound_submit(&req
, 1);
2919 if (tevent_req_nterror(req
, status
)) {
2920 return tevent_req_post(req
, ev
);
2925 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2927 struct tevent_req
*req
=
2928 tevent_req_callback_data(subreq
,
2930 struct smbXcli_req_state
*state
=
2931 tevent_req_data(req
,
2932 struct smbXcli_req_state
);
2936 nwritten
= writev_recv(subreq
, &err
);
2937 TALLOC_FREE(subreq
);
2938 if (nwritten
== -1) {
2939 /* here, we need to notify all pending requests */
2940 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2941 smbXcli_conn_disconnect(state
->conn
, status
);
2946 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2949 TALLOC_CTX
*mem_ctx
,
2950 struct iovec
**piov
, int *pnum_iov
)
2955 uint8_t *first_hdr
= buf
;
2956 size_t verified_buflen
= 0;
2960 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2962 return NT_STATUS_NO_MEMORY
;
2965 while (taken
< buflen
) {
2966 size_t len
= buflen
- taken
;
2967 uint8_t *hdr
= first_hdr
+ taken
;
2970 size_t next_command_ofs
;
2972 struct iovec
*iov_tmp
;
2974 if (verified_buflen
> taken
) {
2975 len
= verified_buflen
- taken
;
2982 DEBUG(10, ("%d bytes left, expected at least %d\n",
2986 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2987 struct smbXcli_session
*s
;
2989 struct iovec tf_iov
[2];
2992 if (len
< SMB2_TF_HDR_SIZE
) {
2993 DEBUG(10, ("%d bytes left, expected at least %d\n",
2994 (int)len
, SMB2_TF_HDR_SIZE
));
2998 tf_len
= SMB2_TF_HDR_SIZE
;
3001 hdr
= first_hdr
+ taken
;
3002 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
3003 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3006 for (; s
; s
= s
->next
) {
3007 if (s
->smb2
->session_id
!= uid
) {
3014 DEBUG(10, ("unknown session_id %llu\n",
3015 (unsigned long long)uid
));
3019 tf_iov
[0].iov_base
= (void *)tf
;
3020 tf_iov
[0].iov_len
= tf_len
;
3021 tf_iov
[1].iov_base
= (void *)hdr
;
3022 tf_iov
[1].iov_len
= len
;
3024 status
= smb2_signing_decrypt_pdu(s
->smb2
->decryption_key
,
3027 if (!NT_STATUS_IS_OK(status
)) {
3032 verified_buflen
= taken
+ len
;
3036 * We need the header plus the body length field
3039 if (len
< SMB2_HDR_BODY
+ 2) {
3040 DEBUG(10, ("%d bytes left, expected at least %d\n",
3041 (int)len
, SMB2_HDR_BODY
));
3044 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
3045 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
3049 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
3050 DEBUG(10, ("Got HDR len %d, expected %d\n",
3051 SVAL(hdr
, 4), SMB2_HDR_BODY
));
3056 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
3057 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
3059 if (next_command_ofs
!= 0) {
3060 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
3063 if (next_command_ofs
> full_size
) {
3066 full_size
= next_command_ofs
;
3068 if (body_size
< 2) {
3071 body_size
&= 0xfffe;
3073 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
3077 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
3079 if (iov_tmp
== NULL
) {
3081 return NT_STATUS_NO_MEMORY
;
3084 cur
= &iov
[num_iov
];
3087 cur
[0].iov_base
= tf
;
3088 cur
[0].iov_len
= tf_len
;
3089 cur
[1].iov_base
= hdr
;
3090 cur
[1].iov_len
= SMB2_HDR_BODY
;
3091 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
3092 cur
[2].iov_len
= body_size
;
3093 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
3094 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
3100 *pnum_iov
= num_iov
;
3101 return NT_STATUS_OK
;
3105 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3108 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
3111 size_t num_pending
= talloc_array_length(conn
->pending
);
3114 for (i
=0; i
<num_pending
; i
++) {
3115 struct tevent_req
*req
= conn
->pending
[i
];
3116 struct smbXcli_req_state
*state
=
3117 tevent_req_data(req
,
3118 struct smbXcli_req_state
);
3120 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
3127 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3128 TALLOC_CTX
*tmp_mem
,
3131 struct tevent_req
*req
;
3132 struct smbXcli_req_state
*state
= NULL
;
3137 struct smbXcli_session
*last_session
= NULL
;
3138 size_t inbuf_len
= smb_len_tcp(inbuf
);
3140 status
= smb2cli_inbuf_parse_compound(conn
,
3141 inbuf
+ NBT_HDR_SIZE
,
3145 if (!NT_STATUS_IS_OK(status
)) {
3149 for (i
=0; i
<num_iov
; i
+=4) {
3150 uint8_t *inbuf_ref
= NULL
;
3151 struct iovec
*cur
= &iov
[i
];
3152 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3153 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3154 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3155 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3156 uint16_t req_opcode
;
3158 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3159 uint32_t new_credits
;
3160 struct smbXcli_session
*session
= NULL
;
3161 const DATA_BLOB
*signing_key
= NULL
;
3162 bool was_encrypted
= false;
3164 new_credits
= conn
->smb2
.cur_credits
;
3165 new_credits
+= credits
;
3166 if (new_credits
> UINT16_MAX
) {
3167 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3169 conn
->smb2
.cur_credits
+= credits
;
3171 req
= smb2cli_conn_find_pending(conn
, mid
);
3173 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3175 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3177 state
->smb2
.got_async
= false;
3179 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3180 if (opcode
!= req_opcode
) {
3181 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3183 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3185 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3186 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3189 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3190 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3191 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3192 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3195 * async interim responses are not signed,
3196 * even if the SMB2_HDR_FLAG_SIGNED flag
3199 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
3200 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
3201 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
3203 if (state
->smb2
.notify_async
) {
3204 state
->smb2
.got_async
= true;
3205 tevent_req_defer_callback(req
, state
->ev
);
3206 tevent_req_notify_callback(req
);
3211 session
= state
->session
;
3212 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3213 session
= last_session
;
3215 last_session
= session
;
3217 if (state
->smb2
.should_sign
) {
3218 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3219 return NT_STATUS_ACCESS_DENIED
;
3223 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3224 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3226 if (session
== NULL
) {
3227 struct smbXcli_session
*s
;
3229 s
= state
->conn
->sessions
;
3230 for (; s
; s
= s
->next
) {
3231 if (s
->smb2
->session_id
!= uid
) {
3240 if (session
== NULL
) {
3241 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3244 last_session
= session
;
3245 signing_key
= &session
->smb2_channel
.signing_key
;
3248 if (opcode
== SMB2_OP_SESSSETUP
) {
3250 * We prefer the channel signing key, if it is
3253 * If we do not have a channel signing key yet,
3254 * we try the main signing key, if it is not
3255 * the final response.
3257 if (signing_key
&& signing_key
->length
== 0 &&
3258 !NT_STATUS_IS_OK(status
)) {
3259 signing_key
= &session
->smb2
->signing_key
;
3262 if (signing_key
&& signing_key
->length
== 0) {
3264 * If we do not have a session key to
3265 * verify the signature, we defer the
3266 * signing check to the caller.
3268 * The caller gets NT_STATUS_OK, it
3270 * smb2cli_session_set_session_key()
3272 * smb2cli_session_set_channel_key()
3273 * which will check the signature
3274 * with the channel signing key.
3280 if (cur
[0].iov_len
== SMB2_TF_HDR_SIZE
) {
3281 const uint8_t *tf
= (const uint8_t *)cur
[0].iov_base
;
3282 uint64_t uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3285 * If the response was encrypted in a SMB2_TRANSFORM
3286 * pdu, which belongs to the correct session,
3287 * we do not need to do signing checks
3289 * It could be the session the response belongs to
3290 * or the session that was used to encrypt the
3291 * SMB2_TRANSFORM request.
3293 if ((session
&& session
->smb2
->session_id
== uid
) ||
3294 (state
->smb2
.encryption_session_id
== uid
)) {
3296 was_encrypted
= true;
3300 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3302 * if the server returns NT_STATUS_USER_SESSION_DELETED
3303 * the response is not signed and we should
3304 * propagate the NT_STATUS_USER_SESSION_DELETED
3305 * status to the caller.
3307 state
->smb2
.signing_skipped
= true;
3311 if (NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3313 * if the server returns
3314 * NT_STATUS_INVALID_PARAMETER
3315 * the response might not be encrypted.
3317 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3318 state
->smb2
.signing_skipped
= true;
3323 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3324 if (!state
->smb2
.signing_skipped
) {
3325 return NT_STATUS_ACCESS_DENIED
;
3329 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3330 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3331 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3333 * if the server returns
3334 * NT_STATUS_NETWORK_NAME_DELETED
3335 * NT_STATUS_FILE_CLOSED
3336 * NT_STATUS_INVALID_PARAMETER
3337 * the response might not be signed
3338 * as this happens before the signing checks.
3340 * If server echos the signature (or all zeros)
3341 * we should report the status from the server
3347 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3348 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3351 state
->smb2
.signing_skipped
= true;
3357 static const uint8_t zeros
[16];
3359 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3363 state
->smb2
.signing_skipped
= true;
3370 status
= smb2_signing_check_pdu(*signing_key
,
3371 state
->conn
->protocol
,
3373 if (!NT_STATUS_IS_OK(status
)) {
3375 * If the signing check fails, we disconnect
3382 smbXcli_req_unset_pending(req
);
3385 * There might be more than one response
3386 * we need to defer the notifications
3388 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3393 tevent_req_defer_callback(req
, state
->ev
);
3397 * Note: here we use talloc_reference() in a way
3398 * that does not expose it to the caller.
3400 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3401 if (tevent_req_nomem(inbuf_ref
, req
)) {
3405 /* copy the related buffers */
3406 state
->smb2
.recv_iov
[0] = cur
[1];
3407 state
->smb2
.recv_iov
[1] = cur
[2];
3408 state
->smb2
.recv_iov
[2] = cur
[3];
3410 tevent_req_done(req
);
3414 return NT_STATUS_RETRY
;
3417 return NT_STATUS_OK
;
3420 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3421 struct iovec
**piov
,
3422 const struct smb2cli_req_expected_response
*expected
,
3423 size_t num_expected
)
3425 struct smbXcli_req_state
*state
=
3426 tevent_req_data(req
,
3427 struct smbXcli_req_state
);
3430 bool found_status
= false;
3431 bool found_size
= false;
3438 if (state
->smb2
.got_async
) {
3439 return STATUS_PENDING
;
3442 if (tevent_req_is_nterror(req
, &status
)) {
3443 for (i
=0; i
< num_expected
; i
++) {
3444 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3445 found_status
= true;
3451 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3457 if (num_expected
== 0) {
3458 found_status
= true;
3462 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3463 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3465 for (i
=0; i
< num_expected
; i
++) {
3466 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3470 found_status
= true;
3471 if (expected
[i
].body_size
== 0) {
3476 if (expected
[i
].body_size
== body_size
) {
3482 if (!found_status
) {
3486 if (state
->smb2
.signing_skipped
) {
3487 if (num_expected
> 0) {
3488 return NT_STATUS_ACCESS_DENIED
;
3490 if (!NT_STATUS_IS_ERR(status
)) {
3491 return NT_STATUS_ACCESS_DENIED
;
3496 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3500 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3506 static const struct {
3507 enum protocol_types proto
;
3508 const char *smb1_name
;
3509 } smb1cli_prots
[] = {
3510 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3511 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3512 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3513 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3514 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3515 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3516 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3517 {PROTOCOL_LANMAN2
, "Samba"},
3518 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3519 {PROTOCOL_NT1
, "NT LM 0.12"},
3520 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3521 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3524 static const struct {
3525 enum protocol_types proto
;
3526 uint16_t smb2_dialect
;
3527 } smb2cli_prots
[] = {
3528 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3529 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3530 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3531 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3532 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3535 struct smbXcli_negprot_state
{
3536 struct smbXcli_conn
*conn
;
3537 struct tevent_context
*ev
;
3538 uint32_t timeout_msec
;
3539 enum protocol_types min_protocol
;
3540 enum protocol_types max_protocol
;
3544 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3548 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3549 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3550 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3551 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3552 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3553 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3557 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3558 struct tevent_context
*ev
,
3559 struct smbXcli_conn
*conn
,
3560 uint32_t timeout_msec
,
3561 enum protocol_types min_protocol
,
3562 enum protocol_types max_protocol
)
3564 struct tevent_req
*req
, *subreq
;
3565 struct smbXcli_negprot_state
*state
;
3567 req
= tevent_req_create(mem_ctx
, &state
,
3568 struct smbXcli_negprot_state
);
3574 state
->timeout_msec
= timeout_msec
;
3575 state
->min_protocol
= min_protocol
;
3576 state
->max_protocol
= max_protocol
;
3578 if (min_protocol
== PROTOCOL_NONE
) {
3579 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3580 return tevent_req_post(req
, ev
);
3583 if (max_protocol
== PROTOCOL_NONE
) {
3584 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3585 return tevent_req_post(req
, ev
);
3588 if (min_protocol
> max_protocol
) {
3589 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3590 return tevent_req_post(req
, ev
);
3593 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3594 (max_protocol
< PROTOCOL_SMB2_02
)) {
3598 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3600 subreq
= smbXcli_negprot_smb1_subreq(state
);
3601 if (tevent_req_nomem(subreq
, req
)) {
3602 return tevent_req_post(req
, ev
);
3604 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3608 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3609 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3613 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3615 subreq
= smbXcli_negprot_smb2_subreq(state
);
3616 if (tevent_req_nomem(subreq
, req
)) {
3617 return tevent_req_post(req
, ev
);
3619 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3624 * We send an SMB1 negprot with the SMB2 dialects
3625 * and expect a SMB1 or a SMB2 response.
3627 * smbXcli_negprot_dispatch_incoming() will fix the
3628 * callback to match protocol of the response.
3630 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3632 subreq
= smbXcli_negprot_smb1_subreq(state
);
3633 if (tevent_req_nomem(subreq
, req
)) {
3634 return tevent_req_post(req
, ev
);
3636 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3640 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3642 struct tevent_req
*req
=
3643 tevent_req_callback_data(subreq
,
3648 * we just want the low level error
3650 status
= tevent_req_simple_recv_ntstatus(subreq
);
3651 TALLOC_FREE(subreq
);
3652 if (tevent_req_nterror(req
, status
)) {
3656 /* this should never happen */
3657 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3660 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3663 DATA_BLOB bytes
= data_blob_null
;
3667 /* setup the protocol strings */
3668 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3672 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3676 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3680 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3686 * We now it is already ascii and
3687 * we want NULL termination.
3689 ok
= data_blob_append(state
, &bytes
,
3690 smb1cli_prots
[i
].smb1_name
,
3691 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3697 smb1cli_req_flags(state
->max_protocol
,
3698 state
->conn
->smb1
.client
.capabilities
,
3703 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3707 state
->timeout_msec
,
3708 0xFFFE, 0, NULL
, /* pid, tid, session */
3709 0, NULL
, /* wct, vwv */
3710 bytes
.length
, bytes
.data
);
3713 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3715 struct tevent_req
*req
=
3716 tevent_req_callback_data(subreq
,
3718 struct smbXcli_negprot_state
*state
=
3719 tevent_req_data(req
,
3720 struct smbXcli_negprot_state
);
3721 struct smbXcli_conn
*conn
= state
->conn
;
3722 struct iovec
*recv_iov
= NULL
;
3731 size_t num_prots
= 0;
3733 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3734 uint32_t both_capabilities
;
3735 uint32_t server_capabilities
= 0;
3736 uint32_t capabilities
;
3737 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3738 uint32_t server_max_xmit
= 0;
3740 uint32_t server_max_mux
= 0;
3741 uint16_t server_security_mode
= 0;
3742 uint32_t server_session_key
= 0;
3743 bool server_readbraw
= false;
3744 bool server_writebraw
= false;
3745 bool server_lockread
= false;
3746 bool server_writeunlock
= false;
3747 struct GUID server_guid
= GUID_zero();
3748 DATA_BLOB server_gss_blob
= data_blob_null
;
3749 uint8_t server_challenge
[8];
3750 char *server_workgroup
= NULL
;
3751 char *server_name
= NULL
;
3752 int server_time_zone
= 0;
3753 NTTIME server_system_time
= 0;
3754 static const struct smb1cli_req_expected_response expected
[] = {
3756 .status
= NT_STATUS_OK
,
3757 .wct
= 0x11, /* NT1 */
3760 .status
= NT_STATUS_OK
,
3761 .wct
= 0x0D, /* LM */
3764 .status
= NT_STATUS_OK
,
3765 .wct
= 0x01, /* CORE */
3769 ZERO_STRUCT(server_challenge
);
3771 status
= smb1cli_req_recv(subreq
, state
,
3776 NULL
, /* pvwv_offset */
3779 NULL
, /* pbytes_offset */
3781 expected
, ARRAY_SIZE(expected
));
3782 TALLOC_FREE(subreq
);
3783 if (tevent_req_nterror(req
, status
)) {
3787 flags
= CVAL(inhdr
, HDR_FLG
);
3789 protnum
= SVAL(vwv
, 0);
3791 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3792 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3796 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3800 if (protnum
!= num_prots
) {
3805 conn
->protocol
= smb1cli_prots
[i
].proto
;
3809 if (conn
->protocol
== PROTOCOL_NONE
) {
3810 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3814 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3815 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3816 "and the selected protocol level doesn't support it.\n"));
3817 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3821 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3822 server_lockread
= true;
3823 server_writeunlock
= true;
3826 if (conn
->protocol
>= PROTOCOL_NT1
) {
3827 const char *client_signing
= NULL
;
3828 bool server_mandatory
= false;
3829 bool server_allowed
= false;
3830 const char *server_signing
= NULL
;
3835 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3840 server_security_mode
= CVAL(vwv
+ 1, 0);
3841 server_max_mux
= SVAL(vwv
+ 1, 1);
3842 server_max_xmit
= IVAL(vwv
+ 3, 1);
3843 server_session_key
= IVAL(vwv
+ 7, 1);
3844 server_time_zone
= SVALS(vwv
+ 15, 1);
3845 server_time_zone
*= 60;
3846 /* this time arrives in real GMT */
3847 server_system_time
= BVAL(vwv
+ 11, 1);
3848 server_capabilities
= IVAL(vwv
+ 9, 1);
3850 key_len
= CVAL(vwv
+ 16, 1);
3852 if (server_capabilities
& CAP_RAW_MODE
) {
3853 server_readbraw
= true;
3854 server_writebraw
= true;
3856 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3857 server_lockread
= true;
3860 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3861 DATA_BLOB blob1
, blob2
;
3863 if (num_bytes
< 16) {
3864 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3868 blob1
= data_blob_const(bytes
, 16);
3869 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3870 if (tevent_req_nterror(req
, status
)) {
3874 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3875 blob2
= data_blob_dup_talloc(state
, blob1
);
3876 if (blob1
.length
> 0 &&
3877 tevent_req_nomem(blob2
.data
, req
)) {
3880 server_gss_blob
= blob2
;
3882 DATA_BLOB blob1
, blob2
;
3884 if (num_bytes
< key_len
) {
3885 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3889 if (key_len
!= 0 && key_len
!= 8) {
3890 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3895 memcpy(server_challenge
, bytes
, 8);
3898 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3899 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3900 if (blob1
.length
> 0) {
3903 len
= utf16_len_n(blob1
.data
,
3907 ok
= convert_string_talloc(state
,
3915 status
= map_nt_error_from_unix_common(errno
);
3916 tevent_req_nterror(req
, status
);
3921 blob2
.data
+= blob1
.length
;
3922 blob2
.length
-= blob1
.length
;
3923 if (blob2
.length
> 0) {
3926 len
= utf16_len_n(blob1
.data
,
3930 ok
= convert_string_talloc(state
,
3938 status
= map_nt_error_from_unix_common(errno
);
3939 tevent_req_nterror(req
, status
);
3945 client_signing
= "disabled";
3946 if (conn
->allow_signing
) {
3947 client_signing
= "allowed";
3949 if (conn
->mandatory_signing
) {
3950 client_signing
= "required";
3953 server_signing
= "not supported";
3954 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3955 server_signing
= "supported";
3956 server_allowed
= true;
3958 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3959 server_signing
= "required";
3960 server_mandatory
= true;
3963 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3967 DEBUG(1,("cli_negprot: SMB signing is required, "
3968 "but client[%s] and server[%s] mismatch\n",
3969 client_signing
, server_signing
));
3970 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3974 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3980 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3984 server_security_mode
= SVAL(vwv
+ 1, 0);
3985 server_max_xmit
= SVAL(vwv
+ 2, 0);
3986 server_max_mux
= SVAL(vwv
+ 3, 0);
3987 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3988 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3989 server_session_key
= IVAL(vwv
+ 6, 0);
3990 server_time_zone
= SVALS(vwv
+ 10, 0);
3991 server_time_zone
*= 60;
3992 /* this time is converted to GMT by make_unix_date */
3993 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3994 unix_to_nt_time(&server_system_time
, t
);
3995 key_len
= SVAL(vwv
+ 11, 0);
3997 if (num_bytes
< key_len
) {
3998 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4002 if (key_len
!= 0 && key_len
!= 8) {
4003 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4008 memcpy(server_challenge
, bytes
, 8);
4011 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4012 if (blob1
.length
> 0) {
4016 len
= utf16_len_n(blob1
.data
,
4020 ok
= convert_string_talloc(state
,
4028 status
= map_nt_error_from_unix_common(errno
);
4029 tevent_req_nterror(req
, status
);
4035 /* the old core protocol */
4036 server_time_zone
= get_time_zone(time(NULL
));
4037 server_max_xmit
= 1024;
4041 if (server_max_xmit
< 1024) {
4042 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4046 if (server_max_mux
< 1) {
4047 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4052 * Now calculate the negotiated capabilities
4053 * based on the mask for:
4054 * - client only flags
4055 * - flags used in both directions
4056 * - server only flags
4058 both_capabilities
= client_capabilities
& server_capabilities
;
4059 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
4060 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
4061 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
4063 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
4065 conn
->smb1
.server
.capabilities
= server_capabilities
;
4066 conn
->smb1
.capabilities
= capabilities
;
4068 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
4069 conn
->smb1
.max_xmit
= max_xmit
;
4071 conn
->smb1
.server
.max_mux
= server_max_mux
;
4073 conn
->smb1
.server
.security_mode
= server_security_mode
;
4075 conn
->smb1
.server
.readbraw
= server_readbraw
;
4076 conn
->smb1
.server
.writebraw
= server_writebraw
;
4077 conn
->smb1
.server
.lockread
= server_lockread
;
4078 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
4080 conn
->smb1
.server
.session_key
= server_session_key
;
4082 talloc_steal(conn
, server_gss_blob
.data
);
4083 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
4084 conn
->smb1
.server
.guid
= server_guid
;
4085 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
4086 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
4087 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
4089 conn
->smb1
.server
.time_zone
= server_time_zone
;
4090 conn
->smb1
.server
.system_time
= server_system_time
;
4092 tevent_req_done(req
);
4095 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
4099 uint16_t dialect_count
= 0;
4101 buf
= state
->smb2
.dyn
;
4102 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4103 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4107 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4111 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
4115 buf
= state
->smb2
.fixed
;
4117 SSVAL(buf
, 2, dialect_count
);
4118 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
4119 SSVAL(buf
, 6, 0); /* Reserved */
4120 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
4121 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
4123 SIVAL(buf
, 8, 0); /* Capabilities */
4125 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
4129 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
4131 if (!NT_STATUS_IS_OK(status
)) {
4134 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
4136 memset(buf
+12, 0, 16); /* ClientGuid */
4138 SBVAL(buf
, 28, 0); /* ClientStartTime */
4140 return smb2cli_req_send(state
, state
->ev
,
4141 state
->conn
, SMB2_OP_NEGPROT
,
4143 state
->timeout_msec
,
4144 NULL
, NULL
, /* tcon, session */
4145 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
4146 state
->smb2
.dyn
, dialect_count
*2);
4149 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
4151 struct tevent_req
*req
=
4152 tevent_req_callback_data(subreq
,
4154 struct smbXcli_negprot_state
*state
=
4155 tevent_req_data(req
,
4156 struct smbXcli_negprot_state
);
4157 struct smbXcli_conn
*conn
= state
->conn
;
4158 size_t security_offset
, security_length
;
4164 uint16_t dialect_revision
;
4165 static const struct smb2cli_req_expected_response expected
[] = {
4167 .status
= NT_STATUS_OK
,
4172 status
= smb2cli_req_recv(subreq
, state
, &iov
,
4173 expected
, ARRAY_SIZE(expected
));
4174 TALLOC_FREE(subreq
);
4175 if (tevent_req_nterror(req
, status
)) {
4179 body
= (uint8_t *)iov
[1].iov_base
;
4181 dialect_revision
= SVAL(body
, 4);
4183 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4184 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4188 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4192 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4196 conn
->protocol
= smb2cli_prots
[i
].proto
;
4200 if (conn
->protocol
== PROTOCOL_NONE
) {
4201 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
4202 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4206 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4207 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4211 /* make sure we do not loop forever */
4212 state
->min_protocol
= PROTOCOL_SMB2_02
;
4215 * send a SMB2 negprot, in order to negotiate
4218 subreq
= smbXcli_negprot_smb2_subreq(state
);
4219 if (tevent_req_nomem(subreq
, req
)) {
4222 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4226 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4228 blob
= data_blob_const(body
+ 8, 16);
4229 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4230 if (tevent_req_nterror(req
, status
)) {
4234 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4235 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4236 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4237 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4238 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4239 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4241 security_offset
= SVAL(body
, 56);
4242 security_length
= SVAL(body
, 58);
4244 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4245 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4249 if (security_length
> iov
[2].iov_len
) {
4250 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4254 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4257 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4261 tevent_req_done(req
);
4264 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4265 TALLOC_CTX
*tmp_mem
,
4268 size_t num_pending
= talloc_array_length(conn
->pending
);
4269 struct tevent_req
*subreq
;
4270 struct smbXcli_req_state
*substate
;
4271 struct tevent_req
*req
;
4272 uint32_t protocol_magic
;
4273 size_t inbuf_len
= smb_len_nbt(inbuf
);
4275 if (num_pending
!= 1) {
4276 return NT_STATUS_INTERNAL_ERROR
;
4279 if (inbuf_len
< 4) {
4280 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4283 subreq
= conn
->pending
[0];
4284 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4285 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4287 protocol_magic
= IVAL(inbuf
, 4);
4289 switch (protocol_magic
) {
4291 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4292 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4293 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4296 if (substate
->smb2
.recv_iov
== NULL
) {
4298 * For the SMB1 negprot we have move it.
4300 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4301 substate
->smb1
.recv_iov
= NULL
;
4305 * we got an SMB2 answer, which consumed sequence number 0
4306 * so we need to use 1 as the next one
4309 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4310 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4311 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4314 DEBUG(10, ("Got non-SMB PDU\n"));
4315 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4318 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4320 return tevent_req_simple_recv_ntstatus(req
);
4323 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4324 uint32_t timeout_msec
,
4325 enum protocol_types min_protocol
,
4326 enum protocol_types max_protocol
)
4328 TALLOC_CTX
*frame
= talloc_stackframe();
4329 struct tevent_context
*ev
;
4330 struct tevent_req
*req
;
4331 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4334 if (smbXcli_conn_has_async_calls(conn
)) {
4336 * Can't use sync call while an async call is in flight
4338 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4341 ev
= tevent_context_init(frame
);
4345 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4346 min_protocol
, max_protocol
);
4350 ok
= tevent_req_poll(req
, ev
);
4352 status
= map_nt_error_from_unix_common(errno
);
4355 status
= smbXcli_negprot_recv(req
);
4361 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4363 if (session
->conn
== NULL
) {
4367 DLIST_REMOVE(session
->conn
->sessions
, session
);
4371 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4372 struct smbXcli_conn
*conn
)
4374 struct smbXcli_session
*session
;
4376 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4377 if (session
== NULL
) {
4380 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
4381 if (session
->smb2
== NULL
) {
4382 talloc_free(session
);
4385 talloc_set_destructor(session
, smbXcli_session_destructor
);
4387 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4388 session
->conn
= conn
;
4393 NTSTATUS
smbXcli_session_application_key(struct smbXcli_session
*session
,
4394 TALLOC_CTX
*mem_ctx
,
4397 const DATA_BLOB
*application_key
;
4399 *key
= data_blob_null
;
4401 if (session
->conn
== NULL
) {
4402 return NT_STATUS_NO_USER_SESSION_KEY
;
4405 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
4406 application_key
= &session
->smb2
->application_key
;
4408 application_key
= &session
->smb1
.application_key
;
4411 if (application_key
->length
== 0) {
4412 return NT_STATUS_NO_USER_SESSION_KEY
;
4415 *key
= data_blob_dup_talloc(mem_ctx
, *application_key
);
4416 if (key
->data
== NULL
) {
4417 return NT_STATUS_NO_MEMORY
;
4420 return NT_STATUS_OK
;
4423 uint16_t smb1cli_session_current_id(struct smbXcli_session
*session
)
4425 return session
->smb1
.session_id
;
4428 void smb1cli_session_set_id(struct smbXcli_session
*session
,
4429 uint16_t session_id
)
4431 session
->smb1
.session_id
= session_id
;
4434 NTSTATUS
smb1cli_session_set_session_key(struct smbXcli_session
*session
,
4435 const DATA_BLOB _session_key
)
4437 struct smbXcli_conn
*conn
= session
->conn
;
4438 uint8_t session_key
[16];
4441 return NT_STATUS_INVALID_PARAMETER_MIX
;
4444 if (session
->smb1
.application_key
.length
!= 0) {
4446 * TODO: do not allow this...
4448 * return NT_STATUS_INVALID_PARAMETER_MIX;
4450 data_blob_clear_free(&session
->smb1
.application_key
);
4451 session
->smb1
.protected_key
= false;
4454 if (_session_key
.length
== 0) {
4455 return NT_STATUS_OK
;
4458 ZERO_STRUCT(session_key
);
4459 memcpy(session_key
, _session_key
.data
,
4460 MIN(_session_key
.length
, sizeof(session_key
)));
4462 session
->smb1
.application_key
= data_blob_talloc(session
,
4464 sizeof(session_key
));
4465 ZERO_STRUCT(session_key
);
4466 if (session
->smb1
.application_key
.data
== NULL
) {
4467 return NT_STATUS_NO_MEMORY
;
4470 session
->smb1
.protected_key
= false;
4472 return NT_STATUS_OK
;
4475 NTSTATUS
smb1cli_session_protect_session_key(struct smbXcli_session
*session
)
4477 if (session
->smb1
.protected_key
) {
4478 /* already protected */
4479 return NT_STATUS_OK
;
4482 if (session
->smb1
.application_key
.length
!= 16) {
4483 return NT_STATUS_INVALID_PARAMETER_MIX
;
4486 smb_key_derivation(session
->smb1
.application_key
.data
,
4487 session
->smb1
.application_key
.length
,
4488 session
->smb1
.application_key
.data
);
4490 session
->smb1
.protected_key
= true;
4492 return NT_STATUS_OK
;
4495 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4497 struct smbXcli_conn
*conn
= session
->conn
;
4498 uint8_t security_mode
= 0;
4501 return security_mode
;
4504 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4505 if (conn
->mandatory_signing
) {
4506 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4509 return security_mode
;
4512 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4514 return session
->smb2
->session_id
;
4517 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4519 return session
->smb2
->session_flags
;
4522 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4523 uint64_t session_id
,
4524 uint16_t session_flags
)
4526 session
->smb2
->session_id
= session_id
;
4527 session
->smb2
->session_flags
= session_flags
;
4530 void smb2cli_session_increment_channel_sequence(struct smbXcli_session
*session
)
4532 session
->smb2
->channel_sequence
+= 1;
4535 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4536 const DATA_BLOB _session_key
,
4537 const struct iovec
*recv_iov
)
4539 struct smbXcli_conn
*conn
= session
->conn
;
4540 uint16_t no_sign_flags
;
4541 uint8_t session_key
[16];
4545 return NT_STATUS_INVALID_PARAMETER_MIX
;
4548 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4550 if (session
->smb2
->session_flags
& no_sign_flags
) {
4551 session
->smb2
->should_sign
= false;
4552 return NT_STATUS_OK
;
4555 if (session
->smb2
->signing_key
.length
!= 0) {
4556 return NT_STATUS_INVALID_PARAMETER_MIX
;
4559 ZERO_STRUCT(session_key
);
4560 memcpy(session_key
, _session_key
.data
,
4561 MIN(_session_key
.length
, sizeof(session_key
)));
4563 session
->smb2
->signing_key
= data_blob_talloc(session
,
4565 sizeof(session_key
));
4566 if (session
->smb2
->signing_key
.data
== NULL
) {
4567 ZERO_STRUCT(session_key
);
4568 return NT_STATUS_NO_MEMORY
;
4571 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4572 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4573 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4575 smb2_key_derivation(session_key
, sizeof(session_key
),
4576 label
.data
, label
.length
,
4577 context
.data
, context
.length
,
4578 session
->smb2
->signing_key
.data
);
4581 session
->smb2
->encryption_key
= data_blob_dup_talloc(session
,
4582 session
->smb2
->signing_key
);
4583 if (session
->smb2
->encryption_key
.data
== NULL
) {
4584 ZERO_STRUCT(session_key
);
4585 return NT_STATUS_NO_MEMORY
;
4588 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4589 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4590 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4592 smb2_key_derivation(session_key
, sizeof(session_key
),
4593 label
.data
, label
.length
,
4594 context
.data
, context
.length
,
4595 session
->smb2
->encryption_key
.data
);
4598 session
->smb2
->decryption_key
= data_blob_dup_talloc(session
,
4599 session
->smb2
->signing_key
);
4600 if (session
->smb2
->decryption_key
.data
== NULL
) {
4601 ZERO_STRUCT(session_key
);
4602 return NT_STATUS_NO_MEMORY
;
4605 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4606 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4607 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4609 smb2_key_derivation(session_key
, sizeof(session_key
),
4610 label
.data
, label
.length
,
4611 context
.data
, context
.length
,
4612 session
->smb2
->decryption_key
.data
);
4615 session
->smb2
->application_key
= data_blob_dup_talloc(session
,
4616 session
->smb2
->signing_key
);
4617 if (session
->smb2
->application_key
.data
== NULL
) {
4618 ZERO_STRUCT(session_key
);
4619 return NT_STATUS_NO_MEMORY
;
4622 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4623 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4624 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4626 smb2_key_derivation(session_key
, sizeof(session_key
),
4627 label
.data
, label
.length
,
4628 context
.data
, context
.length
,
4629 session
->smb2
->application_key
.data
);
4631 ZERO_STRUCT(session_key
);
4633 session
->smb2_channel
.signing_key
= data_blob_dup_talloc(session
,
4634 session
->smb2
->signing_key
);
4635 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
4636 return NT_STATUS_NO_MEMORY
;
4639 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
4640 session
->conn
->protocol
,
4642 if (!NT_STATUS_IS_OK(status
)) {
4646 session
->smb2
->should_sign
= false;
4647 session
->smb2
->should_encrypt
= false;
4649 if (conn
->desire_signing
) {
4650 session
->smb2
->should_sign
= true;
4653 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4654 session
->smb2
->should_sign
= true;
4657 if (session
->smb2
->session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
4658 session
->smb2
->should_encrypt
= true;
4661 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
4662 session
->smb2
->should_encrypt
= false;
4665 if (!(conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
4666 session
->smb2
->should_encrypt
= false;
4669 generate_random_buffer((uint8_t *)&session
->smb2
->nonce_high
,
4670 sizeof(session
->smb2
->nonce_high
));
4671 session
->smb2
->nonce_low
= 1;
4673 return NT_STATUS_OK
;
4676 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4677 struct smbXcli_session
*session1
,
4678 struct smbXcli_conn
*conn
,
4679 struct smbXcli_session
**_session2
)
4681 struct smbXcli_session
*session2
;
4683 if (session1
->smb2
->signing_key
.length
== 0) {
4684 return NT_STATUS_INVALID_PARAMETER_MIX
;
4688 return NT_STATUS_INVALID_PARAMETER_MIX
;
4691 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4692 if (session2
== NULL
) {
4693 return NT_STATUS_NO_MEMORY
;
4695 session2
->smb2
= talloc_reference(session2
, session1
->smb2
);
4696 if (session2
->smb2
== NULL
) {
4697 talloc_free(session2
);
4698 return NT_STATUS_NO_MEMORY
;
4701 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4702 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4703 session2
->conn
= conn
;
4705 *_session2
= session2
;
4706 return NT_STATUS_OK
;
4709 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4710 const DATA_BLOB _channel_key
,
4711 const struct iovec
*recv_iov
)
4713 struct smbXcli_conn
*conn
= session
->conn
;
4714 uint8_t channel_key
[16];
4718 return NT_STATUS_INVALID_PARAMETER_MIX
;
4721 if (session
->smb2_channel
.signing_key
.length
!= 0) {
4722 return NT_STATUS_INVALID_PARAMETER_MIX
;
4725 ZERO_STRUCT(channel_key
);
4726 memcpy(channel_key
, _channel_key
.data
,
4727 MIN(_channel_key
.length
, sizeof(channel_key
)));
4729 session
->smb2_channel
.signing_key
= data_blob_talloc(session
,
4731 sizeof(channel_key
));
4732 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
4733 ZERO_STRUCT(channel_key
);
4734 return NT_STATUS_NO_MEMORY
;
4737 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4738 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4739 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4741 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4742 label
.data
, label
.length
,
4743 context
.data
, context
.length
,
4744 session
->smb2_channel
.signing_key
.data
);
4746 ZERO_STRUCT(channel_key
);
4748 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
4749 session
->conn
->protocol
,
4751 if (!NT_STATUS_IS_OK(status
)) {
4755 return NT_STATUS_OK
;
4758 struct smbXcli_tcon
*smbXcli_tcon_create(TALLOC_CTX
*mem_ctx
)
4760 struct smbXcli_tcon
*tcon
;
4762 tcon
= talloc_zero(mem_ctx
, struct smbXcli_tcon
);
4770 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4772 return tcon
->smb1
.tcon_id
;
4775 void smb1cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint16_t tcon_id
)
4777 tcon
->smb1
.tcon_id
= tcon_id
;
4780 bool smb1cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4782 uint16_t optional_support
,
4783 uint32_t maximal_access
,
4784 uint32_t guest_maximal_access
,
4785 const char *service
,
4786 const char *fs_type
)
4788 tcon
->smb1
.tcon_id
= tcon_id
;
4789 tcon
->smb1
.optional_support
= optional_support
;
4790 tcon
->smb1
.maximal_access
= maximal_access
;
4791 tcon
->smb1
.guest_maximal_access
= guest_maximal_access
;
4793 TALLOC_FREE(tcon
->smb1
.service
);
4794 tcon
->smb1
.service
= talloc_strdup(tcon
, service
);
4795 if (service
!= NULL
&& tcon
->smb1
.service
== NULL
) {
4799 TALLOC_FREE(tcon
->smb1
.fs_type
);
4800 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, fs_type
);
4801 if (fs_type
!= NULL
&& tcon
->smb1
.fs_type
== NULL
) {
4808 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4810 return tcon
->smb2
.tcon_id
;
4813 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon
*tcon
)
4815 return tcon
->smb2
.capabilities
;
4818 void smb2cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4819 struct smbXcli_session
*session
,
4823 uint32_t capabilities
,
4824 uint32_t maximal_access
)
4826 tcon
->smb2
.tcon_id
= tcon_id
;
4827 tcon
->smb2
.type
= type
;
4828 tcon
->smb2
.flags
= flags
;
4829 tcon
->smb2
.capabilities
= capabilities
;
4830 tcon
->smb2
.maximal_access
= maximal_access
;
4832 tcon
->smb2
.should_encrypt
= false;
4834 if (session
== NULL
) {
4838 tcon
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
4840 if (flags
& SMB2_SHAREFLAG_ENCRYPT_DATA
) {
4841 tcon
->smb2
.should_encrypt
= true;