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 "lib/util/iov_buf.h"
29 #include "../libcli/smb/smb_common.h"
30 #include "../libcli/smb/smb_seal.h"
31 #include "../libcli/smb/smb_signing.h"
32 #include "../libcli/smb/read_smb.h"
33 #include "smbXcli_base.h"
34 #include "librpc/ndr/libndr.h"
35 #include "libcli/smb/smb2_negotiate_context.h"
36 #include "lib/crypto/sha512.h"
40 struct smbXcli_session
;
46 struct sockaddr_storage local_ss
;
47 struct sockaddr_storage remote_ss
;
48 const char *remote_name
;
50 struct tevent_queue
*outgoing
;
51 struct tevent_req
**pending
;
52 struct tevent_req
*read_smb_req
;
54 enum protocol_types min_protocol
;
55 enum protocol_types max_protocol
;
56 enum protocol_types protocol
;
59 bool mandatory_signing
;
62 * The incoming dispatch function should return:
63 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
64 * - NT_STATUS_OK, if no more processing is desired, e.g.
65 * the dispatch function called
67 * - All other return values disconnect the connection.
69 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
75 uint32_t capabilities
;
80 uint32_t capabilities
;
83 uint16_t security_mode
;
92 const char *workgroup
;
98 uint32_t capabilities
;
103 struct smb_signing_state
*signing
;
104 struct smb_trans_enc_state
*trans_enc
;
106 struct tevent_req
*read_braw_req
;
111 uint32_t capabilities
;
112 uint16_t security_mode
;
117 uint32_t capabilities
;
118 uint16_t security_mode
;
120 uint32_t max_trans_size
;
121 uint32_t max_read_size
;
122 uint32_t max_write_size
;
130 uint16_t cur_credits
;
131 uint16_t max_credits
;
133 uint32_t cc_chunk_len
;
134 uint32_t cc_max_chunks
;
138 uint8_t preauth_sha512
[64];
141 struct smbXcli_session
*sessions
;
144 struct smb2cli_session
{
146 uint16_t session_flags
;
147 DATA_BLOB application_key
;
148 DATA_BLOB signing_key
;
151 DATA_BLOB encryption_key
;
152 DATA_BLOB decryption_key
;
155 uint16_t channel_sequence
;
159 struct smbXcli_session
{
160 struct smbXcli_session
*prev
, *next
;
161 struct smbXcli_conn
*conn
;
165 DATA_BLOB application_key
;
169 struct smb2cli_session
*smb2
;
172 DATA_BLOB signing_key
;
173 uint8_t preauth_sha512
[64];
177 * this should be a short term hack
178 * until the upper layers have implemented
181 bool disconnect_expired
;
184 struct smbXcli_tcon
{
186 uint32_t fs_attributes
;
190 uint16_t optional_support
;
191 uint32_t maximal_access
;
192 uint32_t guest_maximal_access
;
201 uint32_t capabilities
;
202 uint32_t maximal_access
;
208 struct smbXcli_req_state
{
209 struct tevent_context
*ev
;
210 struct smbXcli_conn
*conn
;
211 struct smbXcli_session
*session
; /* maybe NULL */
212 struct smbXcli_tcon
*tcon
; /* maybe NULL */
214 uint8_t length_hdr
[4];
221 /* Space for the header including the wct */
222 uint8_t hdr
[HDR_VWV
];
225 * For normal requests, smb1cli_req_send chooses a mid.
226 * SecondaryV trans requests need to use the mid of the primary
227 * request, so we need a place to store it.
228 * Assume it is set if != 0.
233 uint8_t bytecount_buf
[2];
235 #define MAX_SMB_IOV 10
236 /* length_hdr, hdr, words, byte_count, buffers */
237 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
242 struct tevent_req
**chained_requests
;
245 NTSTATUS recv_status
;
246 /* always an array of 3 talloc elements */
247 struct iovec
*recv_iov
;
251 const uint8_t *fixed
;
256 uint8_t transform
[SMB2_TF_HDR_SIZE
];
257 uint8_t hdr
[SMB2_HDR_BODY
];
258 uint8_t pad
[7]; /* padding space for compounding */
261 * always an array of 3 talloc elements
262 * (without a SMB2_TRANSFORM header!)
266 struct iovec
*recv_iov
;
269 * the expected max for the response dyn_len
271 uint32_t max_dyn_len
;
273 uint16_t credit_charge
;
277 uint64_t encryption_session_id
;
279 bool signing_skipped
;
282 uint16_t cancel_flags
;
288 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
291 * NT_STATUS_OK, means we do not notify the callers
293 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
295 while (conn
->sessions
) {
296 conn
->sessions
->conn
= NULL
;
297 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
300 if (conn
->smb1
.trans_enc
) {
301 TALLOC_FREE(conn
->smb1
.trans_enc
);
307 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
309 const char *remote_name
,
310 enum smb_signing_setting signing_state
,
311 uint32_t smb1_capabilities
,
312 struct GUID
*client_guid
,
313 uint32_t smb2_capabilities
)
315 struct smbXcli_conn
*conn
= NULL
;
317 struct sockaddr
*sa
= NULL
;
321 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
327 conn
->write_fd
= dup(fd
);
328 if (conn
->write_fd
== -1) {
332 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
333 if (conn
->remote_name
== NULL
) {
338 ss
= (void *)&conn
->local_ss
;
339 sa
= (struct sockaddr
*)ss
;
340 sa_length
= sizeof(conn
->local_ss
);
341 ret
= getsockname(fd
, sa
, &sa_length
);
345 ss
= (void *)&conn
->remote_ss
;
346 sa
= (struct sockaddr
*)ss
;
347 sa_length
= sizeof(conn
->remote_ss
);
348 ret
= getpeername(fd
, sa
, &sa_length
);
353 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
354 if (conn
->outgoing
== NULL
) {
357 conn
->pending
= NULL
;
359 conn
->min_protocol
= PROTOCOL_NONE
;
360 conn
->max_protocol
= PROTOCOL_NONE
;
361 conn
->protocol
= PROTOCOL_NONE
;
363 switch (signing_state
) {
364 case SMB_SIGNING_OFF
:
366 conn
->allow_signing
= false;
367 conn
->desire_signing
= false;
368 conn
->mandatory_signing
= false;
370 case SMB_SIGNING_DEFAULT
:
371 case SMB_SIGNING_IF_REQUIRED
:
372 /* if the server requires it */
373 conn
->allow_signing
= true;
374 conn
->desire_signing
= false;
375 conn
->mandatory_signing
= false;
377 case SMB_SIGNING_REQUIRED
:
379 conn
->allow_signing
= true;
380 conn
->desire_signing
= true;
381 conn
->mandatory_signing
= true;
385 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
386 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
388 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
389 conn
->smb1
.max_xmit
= 1024;
393 /* initialise signing */
394 conn
->smb1
.signing
= smb_signing_init(conn
,
396 conn
->desire_signing
,
397 conn
->mandatory_signing
);
398 if (!conn
->smb1
.signing
) {
402 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
403 if (conn
->mandatory_signing
) {
404 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
407 conn
->smb2
.client
.guid
= *client_guid
;
409 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
411 conn
->smb2
.cur_credits
= 1;
412 conn
->smb2
.max_credits
= 0;
413 conn
->smb2
.io_priority
= 1;
416 * Samba and Windows servers accept a maximum of 16 MiB with a maximum
417 * chunk length of 1 MiB.
419 conn
->smb2
.cc_chunk_len
= 1024 * 1024;
420 conn
->smb2
.cc_max_chunks
= 16;
422 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
426 if (conn
->write_fd
!= -1) {
427 close(conn
->write_fd
);
433 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
439 if (conn
->read_fd
== -1) {
446 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
448 return conn
->protocol
;
451 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
453 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
457 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
464 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
466 set_socket_options(conn
->read_fd
, options
);
469 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
471 return &conn
->local_ss
;
474 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
476 return &conn
->remote_ss
;
479 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
481 return conn
->remote_name
;
484 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
486 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
493 return conn
->smb1
.server
.max_mux
;
496 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
498 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
499 return conn
->smb2
.server
.system_time
;
502 return conn
->smb1
.server
.system_time
;
505 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
507 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
508 return &conn
->smb2
.server
.gss_blob
;
511 return &conn
->smb1
.server
.gss_blob
;
514 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
516 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
517 return &conn
->smb2
.server
.guid
;
520 return &conn
->smb1
.server
.guid
;
523 struct smbXcli_conn_samba_suicide_state
{
524 struct smbXcli_conn
*conn
;
529 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
531 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
532 struct tevent_context
*ev
,
533 struct smbXcli_conn
*conn
,
536 struct tevent_req
*req
, *subreq
;
537 struct smbXcli_conn_samba_suicide_state
*state
;
539 req
= tevent_req_create(mem_ctx
, &state
,
540 struct smbXcli_conn_samba_suicide_state
);
545 SIVAL(state
->buf
, 4, 0x74697865);
546 SCVAL(state
->buf
, 8, exitcode
);
547 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
549 state
->iov
.iov_base
= state
->buf
;
550 state
->iov
.iov_len
= sizeof(state
->buf
);
552 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
553 false, &state
->iov
, 1);
554 if (tevent_req_nomem(subreq
, req
)) {
555 return tevent_req_post(req
, ev
);
557 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
561 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
563 struct tevent_req
*req
= tevent_req_callback_data(
564 subreq
, struct tevent_req
);
565 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
566 req
, struct smbXcli_conn_samba_suicide_state
);
570 nwritten
= writev_recv(subreq
, &err
);
572 if (nwritten
== -1) {
573 NTSTATUS status
= map_nt_error_from_unix_common(err
);
574 smbXcli_conn_disconnect(state
->conn
, status
);
577 tevent_req_done(req
);
580 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
582 return tevent_req_simple_recv_ntstatus(req
);
585 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
588 TALLOC_CTX
*frame
= talloc_stackframe();
589 struct tevent_context
*ev
;
590 struct tevent_req
*req
;
591 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
594 if (smbXcli_conn_has_async_calls(conn
)) {
596 * Can't use sync call while an async call is in flight
598 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
601 ev
= samba_tevent_context_init(frame
);
605 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
609 ok
= tevent_req_poll_ntstatus(req
, ev
, &status
);
613 status
= smbXcli_conn_samba_suicide_recv(req
);
619 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
621 return conn
->smb1
.capabilities
;
624 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
626 return conn
->smb1
.max_xmit
;
629 bool smb1cli_conn_req_possible(struct smbXcli_conn
*conn
)
632 uint16_t possible
= conn
->smb1
.server
.max_mux
;
634 pending
= tevent_queue_length(conn
->outgoing
);
635 if (pending
>= possible
) {
638 pending
+= talloc_array_length(conn
->pending
);
639 if (pending
>= possible
) {
646 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
648 return conn
->smb1
.server
.session_key
;
651 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
653 return conn
->smb1
.server
.challenge
;
656 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
658 return conn
->smb1
.server
.security_mode
;
661 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
663 return conn
->smb1
.server
.readbraw
;
666 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
668 return conn
->smb1
.server
.writebraw
;
671 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
673 return conn
->smb1
.server
.lockread
;
676 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
678 return conn
->smb1
.server
.writeunlock
;
681 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
683 return conn
->smb1
.server
.time_zone
;
686 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
687 const DATA_BLOB user_session_key
,
688 const DATA_BLOB response
)
690 return smb_signing_activate(conn
->smb1
.signing
,
695 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
696 const uint8_t *buf
, uint32_t seqnum
)
698 const uint8_t *hdr
= buf
+ NBT_HDR_SIZE
;
699 size_t len
= smb_len_nbt(buf
);
701 return smb_signing_check_pdu(conn
->smb1
.signing
, hdr
, len
, seqnum
);
704 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
706 return smb_signing_is_active(conn
->smb1
.signing
);
709 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
710 struct smb_trans_enc_state
*es
)
712 /* Replace the old state, if any. */
713 if (conn
->smb1
.trans_enc
) {
714 TALLOC_FREE(conn
->smb1
.trans_enc
);
716 conn
->smb1
.trans_enc
= es
;
719 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
721 return common_encryption_on(conn
->smb1
.trans_enc
);
725 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
727 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
728 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
730 if (NT_STATUS_IS_OK(status
)) {
734 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
738 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
742 * Is the SMB command able to hold an AND_X successor
743 * @param[in] cmd The SMB command in question
744 * @retval Can we add a chained request after "cmd"?
746 bool smb1cli_is_andx_req(uint8_t cmd
)
766 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
768 size_t num_pending
= talloc_array_length(conn
->pending
);
771 if (conn
->protocol
== PROTOCOL_NONE
) {
773 * This is what windows sends on the SMB1 Negprot request
774 * and some vendors reuse the SMB1 MID as SMB2 sequence number.
782 result
= conn
->smb1
.mid
++;
783 if ((result
== 0) || (result
== 0xffff)) {
787 for (i
=0; i
<num_pending
; i
++) {
788 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
793 if (i
== num_pending
) {
799 void smbXcli_req_unset_pending(struct tevent_req
*req
)
801 struct smbXcli_req_state
*state
=
803 struct smbXcli_req_state
);
804 struct smbXcli_conn
*conn
= state
->conn
;
805 size_t num_pending
= talloc_array_length(conn
->pending
);
808 if (state
->smb1
.mid
!= 0) {
810 * This is a [nt]trans[2] request which waits
811 * for more than one reply.
816 tevent_req_set_cleanup_fn(req
, NULL
);
818 if (num_pending
== 1) {
820 * The pending read_smb tevent_req is a child of
821 * conn->pending. So if nothing is pending anymore, we need to
822 * delete the socket read fde.
824 TALLOC_FREE(conn
->pending
);
825 conn
->read_smb_req
= NULL
;
829 for (i
=0; i
<num_pending
; i
++) {
830 if (req
== conn
->pending
[i
]) {
834 if (i
== num_pending
) {
836 * Something's seriously broken. Just returning here is the
837 * right thing nevertheless, the point of this routine is to
838 * remove ourselves from conn->pending.
844 * Remove ourselves from the conn->pending array
846 for (; i
< (num_pending
- 1); i
++) {
847 conn
->pending
[i
] = conn
->pending
[i
+1];
851 * No NULL check here, we're shrinking by sizeof(void *), and
852 * talloc_realloc just adjusts the size for this.
854 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
859 static void smbXcli_req_cleanup(struct tevent_req
*req
,
860 enum tevent_req_state req_state
)
862 struct smbXcli_req_state
*state
=
864 struct smbXcli_req_state
);
867 case TEVENT_REQ_RECEIVED
:
869 * Make sure we really remove it from
870 * the pending array on destruction.
873 smbXcli_req_unset_pending(req
);
880 static bool smb1cli_req_cancel(struct tevent_req
*req
);
881 static bool smb2cli_req_cancel(struct tevent_req
*req
);
883 static bool smbXcli_req_cancel(struct tevent_req
*req
)
885 struct smbXcli_req_state
*state
=
887 struct smbXcli_req_state
);
889 if (!smbXcli_conn_is_connected(state
->conn
)) {
893 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
897 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
898 return smb2cli_req_cancel(req
);
901 return smb1cli_req_cancel(req
);
904 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
906 bool smbXcli_req_set_pending(struct tevent_req
*req
)
908 struct smbXcli_req_state
*state
=
910 struct smbXcli_req_state
);
911 struct smbXcli_conn
*conn
;
912 struct tevent_req
**pending
;
917 if (!smbXcli_conn_is_connected(conn
)) {
921 num_pending
= talloc_array_length(conn
->pending
);
923 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
925 if (pending
== NULL
) {
928 pending
[num_pending
] = req
;
929 conn
->pending
= pending
;
930 tevent_req_set_cleanup_fn(req
, smbXcli_req_cleanup
);
931 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
933 if (!smbXcli_conn_receive_next(conn
)) {
935 * the caller should notify the current request
937 * And all other pending requests get notified
938 * by smbXcli_conn_disconnect().
940 smbXcli_req_unset_pending(req
);
941 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
948 static void smbXcli_conn_received(struct tevent_req
*subreq
);
950 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
952 size_t num_pending
= talloc_array_length(conn
->pending
);
953 struct tevent_req
*req
;
954 struct smbXcli_req_state
*state
;
956 if (conn
->read_smb_req
!= NULL
) {
960 if (num_pending
== 0) {
961 if (conn
->smb2
.mid
< UINT64_MAX
) {
962 /* no more pending requests, so we are done for now */
967 * If there are no more SMB2 requests possible,
968 * because we are out of message ids,
969 * we need to disconnect.
971 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
975 req
= conn
->pending
[0];
976 state
= tevent_req_data(req
, struct smbXcli_req_state
);
979 * We're the first ones, add the read_smb request that waits for the
980 * answer from the server
982 conn
->read_smb_req
= read_smb_send(conn
->pending
,
985 if (conn
->read_smb_req
== NULL
) {
988 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
992 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
994 struct smbXcli_session
*session
;
996 tevent_queue_stop(conn
->outgoing
);
998 if (conn
->read_fd
!= -1) {
999 close(conn
->read_fd
);
1001 if (conn
->write_fd
!= -1) {
1002 close(conn
->write_fd
);
1005 conn
->write_fd
= -1;
1007 session
= conn
->sessions
;
1008 if (talloc_array_length(conn
->pending
) == 0) {
1010 * if we do not have pending requests
1011 * there is no need to update the channel_sequence
1015 for (; session
; session
= session
->next
) {
1016 smb2cli_session_increment_channel_sequence(session
);
1020 * Cancel all pending requests. We do not do a for-loop walking
1021 * conn->pending because that array changes in
1022 * smbXcli_req_unset_pending.
1024 while (talloc_array_length(conn
->pending
) > 0) {
1025 struct tevent_req
*req
;
1026 struct smbXcli_req_state
*state
;
1027 struct tevent_req
**chain
;
1031 req
= conn
->pending
[0];
1032 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1034 if (state
->smb1
.chained_requests
== NULL
) {
1036 * We're dead. No point waiting for trans2
1039 state
->smb1
.mid
= 0;
1041 smbXcli_req_unset_pending(req
);
1043 if (NT_STATUS_IS_OK(status
)) {
1044 /* do not notify the callers */
1049 * we need to defer the callback, because we may notify
1050 * more then one caller.
1052 tevent_req_defer_callback(req
, state
->ev
);
1053 tevent_req_nterror(req
, status
);
1057 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
1058 num_chained
= talloc_array_length(chain
);
1060 for (i
=0; i
<num_chained
; i
++) {
1062 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1065 * We're dead. No point waiting for trans2
1068 state
->smb1
.mid
= 0;
1070 smbXcli_req_unset_pending(req
);
1072 if (NT_STATUS_IS_OK(status
)) {
1073 /* do not notify the callers */
1078 * we need to defer the callback, because we may notify
1079 * more than one caller.
1081 tevent_req_defer_callback(req
, state
->ev
);
1082 tevent_req_nterror(req
, status
);
1089 * Fetch a smb request's mid. Only valid after the request has been sent by
1090 * smb1cli_req_send().
1092 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
1094 struct smbXcli_req_state
*state
=
1095 tevent_req_data(req
,
1096 struct smbXcli_req_state
);
1098 if (state
->smb1
.mid
!= 0) {
1099 return state
->smb1
.mid
;
1102 return SVAL(state
->smb1
.hdr
, HDR_MID
);
1105 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
1107 struct smbXcli_req_state
*state
=
1108 tevent_req_data(req
,
1109 struct smbXcli_req_state
);
1111 state
->smb1
.mid
= mid
;
1114 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
1116 struct smbXcli_req_state
*state
=
1117 tevent_req_data(req
,
1118 struct smbXcli_req_state
);
1120 return state
->smb1
.seqnum
;
1123 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
1125 struct smbXcli_req_state
*state
=
1126 tevent_req_data(req
,
1127 struct smbXcli_req_state
);
1129 state
->smb1
.seqnum
= seqnum
;
1132 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1134 ssize_t ret
= iov_buflen(iov
, count
);
1136 /* Ignore the overflow case for now ... */
1140 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1141 const struct iovec
*iov
,
1147 buflen
= iov_buflen(iov
, count
);
1152 buf
= talloc_array(mem_ctx
, uint8_t, buflen
);
1157 iov_buf(iov
, count
, buf
, buflen
);
1162 static void smb1cli_req_flags(enum protocol_types protocol
,
1163 uint32_t smb1_capabilities
,
1164 uint8_t smb_command
,
1165 uint8_t additional_flags
,
1166 uint8_t clear_flags
,
1168 uint16_t additional_flags2
,
1169 uint16_t clear_flags2
,
1173 uint16_t flags2
= 0;
1175 if (protocol
>= PROTOCOL_LANMAN1
) {
1176 flags
|= FLAG_CASELESS_PATHNAMES
;
1177 flags
|= FLAG_CANONICAL_PATHNAMES
;
1180 if (protocol
>= PROTOCOL_LANMAN2
) {
1181 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1182 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1185 if (protocol
>= PROTOCOL_NT1
) {
1186 flags2
|= FLAGS2_IS_LONG_NAME
;
1188 if (smb1_capabilities
& CAP_UNICODE
) {
1189 flags2
|= FLAGS2_UNICODE_STRINGS
;
1191 if (smb1_capabilities
& CAP_STATUS32
) {
1192 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1194 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1195 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1199 flags
|= additional_flags
;
1200 flags
&= ~clear_flags
;
1201 flags2
|= additional_flags2
;
1202 flags2
&= ~clear_flags2
;
1208 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1210 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1212 struct smbXcli_req_state
*state
=
1213 tevent_req_data(req
,
1214 struct smbXcli_req_state
);
1219 struct tevent_req
*subreq
;
1222 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1223 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1224 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1225 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1226 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1228 subreq
= smb1cli_req_create(state
, state
->ev
,
1238 0, NULL
); /* bytes */
1239 if (subreq
== NULL
) {
1242 smb1cli_req_set_mid(subreq
, mid
);
1244 status
= smb1cli_req_chain_submit(&subreq
, 1);
1245 if (!NT_STATUS_IS_OK(status
)) {
1246 TALLOC_FREE(subreq
);
1249 smb1cli_req_set_mid(subreq
, 0);
1251 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1256 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1258 /* we do not care about the result */
1259 TALLOC_FREE(subreq
);
1262 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1263 struct tevent_context
*ev
,
1264 struct smbXcli_conn
*conn
,
1265 uint8_t smb_command
,
1266 uint8_t additional_flags
,
1267 uint8_t clear_flags
,
1268 uint16_t additional_flags2
,
1269 uint16_t clear_flags2
,
1270 uint32_t timeout_msec
,
1272 struct smbXcli_tcon
*tcon
,
1273 struct smbXcli_session
*session
,
1274 uint8_t wct
, uint16_t *vwv
,
1276 struct iovec
*bytes_iov
)
1278 struct tevent_req
*req
;
1279 struct smbXcli_req_state
*state
;
1281 uint16_t flags2
= 0;
1286 if (iov_count
> MAX_SMB_IOV
) {
1288 * Should not happen :-)
1293 req
= tevent_req_create(mem_ctx
, &state
,
1294 struct smbXcli_req_state
);
1300 state
->session
= session
;
1304 uid
= session
->smb1
.session_id
;
1308 tid
= tcon
->smb1
.tcon_id
;
1310 if (tcon
->fs_attributes
& FILE_CASE_SENSITIVE_SEARCH
) {
1311 clear_flags
|= FLAG_CASELESS_PATHNAMES
;
1313 /* Default setting, case insensitive. */
1314 additional_flags
|= FLAG_CASELESS_PATHNAMES
;
1317 if (smbXcli_conn_dfs_supported(conn
) &&
1318 smbXcli_tcon_is_dfs_share(tcon
))
1320 additional_flags2
|= FLAGS2_DFS_PATHNAMES
;
1324 state
->smb1
.recv_cmd
= 0xFF;
1325 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1326 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1327 if (state
->smb1
.recv_iov
== NULL
) {
1332 smb1cli_req_flags(conn
->protocol
,
1333 conn
->smb1
.capabilities
,
1342 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1343 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1344 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1345 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1346 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1347 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1348 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1349 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1350 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1351 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1352 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1354 state
->smb1
.vwv
= vwv
;
1356 num_bytes
= iov_buflen(bytes_iov
, iov_count
);
1357 if (num_bytes
== -1) {
1359 * I'd love to add a check for num_bytes<=UINT16_MAX here, but
1360 * the smbclient->samba connections can lie and transfer more.
1366 SSVAL(state
->smb1
.bytecount_buf
, 0, num_bytes
);
1368 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1369 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1370 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1371 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1372 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1373 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1374 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1375 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1377 if (iov_count
!= 0) {
1378 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1379 iov_count
* sizeof(*bytes_iov
));
1381 state
->smb1
.iov_count
= iov_count
+ 4;
1383 if (timeout_msec
> 0) {
1384 struct timeval endtime
;
1386 endtime
= timeval_current_ofs_msec(timeout_msec
);
1387 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1392 switch (smb_command
) {
1396 state
->one_way
= true;
1399 state
->one_way
= true;
1400 state
->smb1
.one_way_seqnum
= true;
1404 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1405 state
->one_way
= true;
1413 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1414 struct iovec
*iov
, int iov_count
,
1416 bool one_way_seqnum
)
1418 TALLOC_CTX
*frame
= NULL
;
1422 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1423 * iovec directly. MD5Update would do that just fine.
1426 if (iov_count
< 4) {
1427 return NT_STATUS_INVALID_PARAMETER_MIX
;
1429 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1430 return NT_STATUS_INVALID_PARAMETER_MIX
;
1432 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1433 return NT_STATUS_INVALID_PARAMETER_MIX
;
1435 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1436 return NT_STATUS_INVALID_PARAMETER_MIX
;
1438 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1439 return NT_STATUS_INVALID_PARAMETER_MIX
;
1442 frame
= talloc_stackframe();
1444 buf
= smbXcli_iov_concat(frame
, &iov
[1], iov_count
- 1);
1446 return NT_STATUS_NO_MEMORY
;
1449 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1451 smb_signing_sign_pdu(conn
->smb1
.signing
,
1452 buf
, talloc_get_size(buf
),
1454 memcpy(iov
[1].iov_base
, buf
, iov
[1].iov_len
);
1457 return NT_STATUS_OK
;
1460 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1461 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1462 TALLOC_CTX
*tmp_mem
,
1465 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1466 struct smbXcli_req_state
*state
,
1467 struct iovec
*iov
, int iov_count
)
1469 struct tevent_req
*subreq
;
1475 if (!smbXcli_conn_is_connected(state
->conn
)) {
1476 return NT_STATUS_CONNECTION_DISCONNECTED
;
1479 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1480 return NT_STATUS_REVISION_MISMATCH
;
1483 if (iov_count
< 4) {
1484 return NT_STATUS_INVALID_PARAMETER_MIX
;
1486 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1487 return NT_STATUS_INVALID_PARAMETER_MIX
;
1489 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1490 return NT_STATUS_INVALID_PARAMETER_MIX
;
1492 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1493 return NT_STATUS_INVALID_PARAMETER_MIX
;
1495 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1496 return NT_STATUS_INVALID_PARAMETER_MIX
;
1499 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1500 if (cmd
== SMBreadBraw
) {
1501 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1502 return NT_STATUS_INVALID_PARAMETER_MIX
;
1504 state
->conn
->smb1
.read_braw_req
= req
;
1507 if (state
->smb1
.mid
!= 0) {
1508 mid
= state
->smb1
.mid
;
1510 mid
= smb1cli_alloc_mid(state
->conn
);
1512 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1514 nbtlen
= iov_buflen(&iov
[1], iov_count
-1);
1515 if ((nbtlen
== -1) || (nbtlen
> 0x1FFFF)) {
1516 return NT_STATUS_INVALID_PARAMETER_MIX
;
1519 _smb_setlen_nbt(iov
[0].iov_base
, nbtlen
);
1521 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1522 &state
->smb1
.seqnum
,
1523 state
->smb1
.one_way_seqnum
);
1525 if (!NT_STATUS_IS_OK(status
)) {
1530 * If we supported multiple encrytion contexts
1531 * here we'd look up based on tid.
1533 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1534 char *buf
, *enc_buf
;
1536 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1538 return NT_STATUS_NO_MEMORY
;
1540 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1541 (char *)buf
, &enc_buf
);
1543 if (!NT_STATUS_IS_OK(status
)) {
1544 DEBUG(0, ("Error in encrypting client message: %s\n",
1545 nt_errstr(status
)));
1548 buf
= (char *)talloc_memdup(state
, enc_buf
,
1549 smb_len_nbt(enc_buf
)+4);
1552 return NT_STATUS_NO_MEMORY
;
1554 iov
[0].iov_base
= (void *)buf
;
1555 iov
[0].iov_len
= talloc_get_size(buf
);
1559 if (state
->conn
->dispatch_incoming
== NULL
) {
1560 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1563 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1565 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1566 state
->conn
->write_fd
, false, iov
, iov_count
);
1567 if (subreq
== NULL
) {
1568 return NT_STATUS_NO_MEMORY
;
1570 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1571 return NT_STATUS_OK
;
1574 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1575 struct tevent_context
*ev
,
1576 struct smbXcli_conn
*conn
,
1577 uint8_t smb_command
,
1578 uint8_t additional_flags
,
1579 uint8_t clear_flags
,
1580 uint16_t additional_flags2
,
1581 uint16_t clear_flags2
,
1582 uint32_t timeout_msec
,
1584 struct smbXcli_tcon
*tcon
,
1585 struct smbXcli_session
*session
,
1586 uint8_t wct
, uint16_t *vwv
,
1588 const uint8_t *bytes
)
1590 struct tevent_req
*req
;
1594 iov
.iov_base
= discard_const_p(void, bytes
);
1595 iov
.iov_len
= num_bytes
;
1597 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1598 additional_flags
, clear_flags
,
1599 additional_flags2
, clear_flags2
,
1606 if (!tevent_req_is_in_progress(req
)) {
1607 return tevent_req_post(req
, ev
);
1609 status
= smb1cli_req_chain_submit(&req
, 1);
1610 if (tevent_req_nterror(req
, status
)) {
1611 return tevent_req_post(req
, ev
);
1616 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1618 struct tevent_req
*req
=
1619 tevent_req_callback_data(subreq
,
1621 struct smbXcli_req_state
*state
=
1622 tevent_req_data(req
,
1623 struct smbXcli_req_state
);
1627 nwritten
= writev_recv(subreq
, &err
);
1628 TALLOC_FREE(subreq
);
1629 if (nwritten
== -1) {
1630 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1631 smbXcli_conn_disconnect(state
->conn
, status
);
1632 tevent_req_nterror(req
, status
);
1636 if (state
->one_way
) {
1637 state
->inbuf
= NULL
;
1638 tevent_req_done(req
);
1642 if (!smbXcli_req_set_pending(req
)) {
1643 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1648 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1650 struct smbXcli_conn
*conn
=
1651 tevent_req_callback_data(subreq
,
1652 struct smbXcli_conn
);
1653 TALLOC_CTX
*frame
= talloc_stackframe();
1659 if (subreq
!= conn
->read_smb_req
) {
1660 DEBUG(1, ("Internal error: cli_smb_received called with "
1661 "unexpected subreq\n"));
1662 smbXcli_conn_disconnect(conn
, NT_STATUS_INTERNAL_ERROR
);
1666 conn
->read_smb_req
= NULL
;
1668 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1669 TALLOC_FREE(subreq
);
1670 if (received
== -1) {
1671 status
= map_nt_error_from_unix_common(err
);
1672 smbXcli_conn_disconnect(conn
, status
);
1677 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1679 if (NT_STATUS_IS_OK(status
)) {
1681 * We should not do any more processing
1682 * as the dispatch function called
1683 * tevent_req_done().
1688 if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1690 * We got an error, so notify all pending requests
1692 smbXcli_conn_disconnect(conn
, status
);
1697 * We got NT_STATUS_RETRY, so we may ask for a
1698 * next incoming pdu.
1700 if (!smbXcli_conn_receive_next(conn
)) {
1701 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1705 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1706 struct iovec
**piov
, int *pnum_iov
)
1717 size_t min_size
= MIN_SMB_SIZE
;
1719 buflen
= smb_len_tcp(buf
);
1722 hdr
= buf
+ NBT_HDR_SIZE
;
1724 status
= smb1cli_pull_raw_error(hdr
);
1725 if (NT_STATUS_IS_ERR(status
)) {
1727 * This is an ugly hack to support OS/2
1728 * which skips the byte_count in the DATA block
1729 * on some error responses.
1733 min_size
-= sizeof(uint16_t);
1736 if (buflen
< min_size
) {
1737 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1741 * This returns iovec elements in the following order:
1756 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1758 return NT_STATUS_NO_MEMORY
;
1760 iov
[0].iov_base
= hdr
;
1761 iov
[0].iov_len
= HDR_WCT
;
1764 cmd
= CVAL(hdr
, HDR_COM
);
1768 size_t len
= buflen
- taken
;
1770 struct iovec
*iov_tmp
;
1777 * we need at least WCT
1779 needed
= sizeof(uint8_t);
1781 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1782 __location__
, (int)len
, (int)needed
));
1787 * Now we check if the specified words are there
1789 wct
= CVAL(hdr
, wct_ofs
);
1790 needed
+= wct
* sizeof(uint16_t);
1792 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1793 __location__
, (int)len
, (int)needed
));
1797 if ((num_iov
== 1) &&
1799 NT_STATUS_IS_ERR(status
))
1802 * This is an ugly hack to support OS/2
1803 * which skips the byte_count in the DATA block
1804 * on some error responses.
1808 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1810 if (iov_tmp
== NULL
) {
1812 return NT_STATUS_NO_MEMORY
;
1815 cur
= &iov
[num_iov
];
1819 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1821 cur
[1].iov_base
= cur
[0].iov_base
;
1828 * we need at least BCC
1830 needed
+= sizeof(uint16_t);
1832 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1833 __location__
, (int)len
, (int)needed
));
1838 * Now we check if the specified bytes are there
1840 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1841 bcc
= SVAL(hdr
, bcc_ofs
);
1842 needed
+= bcc
* sizeof(uint8_t);
1844 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1845 __location__
, (int)len
, (int)needed
));
1850 * we allocate 2 iovec structures for words and bytes
1852 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1854 if (iov_tmp
== NULL
) {
1856 return NT_STATUS_NO_MEMORY
;
1859 cur
= &iov
[num_iov
];
1862 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1863 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1864 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1865 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1869 if (!smb1cli_is_andx_req(cmd
)) {
1871 * If the current command does not have AndX chanining
1877 if (wct
== 0 && bcc
== 0) {
1879 * An empty response also ends the chain,
1880 * most likely with an error.
1886 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1887 __location__
, (int)wct
, (int)cmd
));
1890 cmd
= CVAL(cur
[0].iov_base
, 0);
1893 * If it is the end of the chain we are also done.
1897 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1899 if (wct_ofs
< taken
) {
1900 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1902 if (wct_ofs
> buflen
) {
1903 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1907 * we consumed everything up to the start of the next
1913 remaining
= buflen
- taken
;
1915 if (remaining
> 0 && num_iov
>= 3) {
1917 * The last DATA block gets the remaining
1918 * bytes, this is needed to support
1919 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1921 iov
[num_iov
-1].iov_len
+= remaining
;
1925 *pnum_iov
= num_iov
;
1926 return NT_STATUS_OK
;
1930 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1933 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1934 TALLOC_CTX
*tmp_mem
,
1937 struct tevent_req
*req
;
1938 struct smbXcli_req_state
*state
;
1945 uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1946 size_t len
= smb_len_tcp(inbuf
);
1947 struct iovec
*iov
= NULL
;
1949 struct tevent_req
**chain
= NULL
;
1950 size_t num_chained
= 0;
1951 size_t num_responses
= 0;
1953 if (conn
->smb1
.read_braw_req
!= NULL
) {
1954 req
= conn
->smb1
.read_braw_req
;
1955 conn
->smb1
.read_braw_req
= NULL
;
1956 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1958 smbXcli_req_unset_pending(req
);
1960 if (state
->smb1
.recv_iov
== NULL
) {
1962 * For requests with more than
1963 * one response, we have to readd the
1966 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1969 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1970 return NT_STATUS_OK
;
1974 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inhdr
);
1975 state
->smb1
.recv_iov
[0].iov_len
= len
;
1976 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1977 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1979 state
->smb1
.recv_cmd
= SMBreadBraw
;
1980 state
->smb1
.recv_status
= NT_STATUS_OK
;
1981 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1983 tevent_req_done(req
);
1984 return NT_STATUS_OK
;
1987 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1988 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1989 DEBUG(10, ("Got non-SMB PDU\n"));
1990 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1994 * If we supported multiple encrytion contexts
1995 * here we'd look up based on tid.
1997 if (common_encryption_on(conn
->smb1
.trans_enc
)
1998 && (CVAL(inbuf
, 0) == 0)) {
1999 uint16_t enc_ctx_num
;
2001 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
2002 if (!NT_STATUS_IS_OK(status
)) {
2003 DEBUG(10, ("get_enc_ctx_num returned %s\n",
2004 nt_errstr(status
)));
2008 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
2009 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
2011 conn
->smb1
.trans_enc
->enc_ctx_num
));
2012 return NT_STATUS_INVALID_HANDLE
;
2015 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
2017 if (!NT_STATUS_IS_OK(status
)) {
2018 DEBUG(10, ("common_decrypt_buffer returned %s\n",
2019 nt_errstr(status
)));
2022 inhdr
= inbuf
+ NBT_HDR_SIZE
;
2023 len
= smb_len_nbt(inbuf
);
2026 mid
= SVAL(inhdr
, HDR_MID
);
2027 num_pending
= talloc_array_length(conn
->pending
);
2029 for (i
=0; i
<num_pending
; i
++) {
2030 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
2034 if (i
== num_pending
) {
2035 /* Dump unexpected reply */
2036 return NT_STATUS_RETRY
;
2039 oplock_break
= false;
2041 if (mid
== 0xffff) {
2043 * Paranoia checks that this is really an oplock break request.
2045 oplock_break
= (len
== 51); /* hdr + 8 words */
2046 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
2047 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
2048 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
2049 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
2051 if (!oplock_break
) {
2052 /* Dump unexpected reply */
2053 return NT_STATUS_RETRY
;
2057 req
= conn
->pending
[i
];
2058 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2060 if (!oplock_break
/* oplock breaks are not signed */
2061 && !smb_signing_check_pdu(conn
->smb1
.signing
,
2062 inhdr
, len
, state
->smb1
.seqnum
+1)) {
2063 DEBUG(10, ("cli_check_sign_mac failed\n"));
2064 return NT_STATUS_ACCESS_DENIED
;
2067 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
2069 if (!NT_STATUS_IS_OK(status
)) {
2070 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
2071 nt_errstr(status
)));
2075 cmd
= CVAL(inhdr
, HDR_COM
);
2076 status
= smb1cli_pull_raw_error(inhdr
);
2078 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
) &&
2079 (state
->session
!= NULL
) && state
->session
->disconnect_expired
)
2082 * this should be a short term hack
2083 * until the upper layers have implemented
2084 * re-authentication.
2089 if (state
->smb1
.chained_requests
== NULL
) {
2091 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2094 smbXcli_req_unset_pending(req
);
2096 if (state
->smb1
.recv_iov
== NULL
) {
2098 * For requests with more than
2099 * one response, we have to readd the
2102 state
->smb1
.recv_iov
= talloc_zero_array(state
,
2105 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2106 return NT_STATUS_OK
;
2110 state
->smb1
.recv_cmd
= cmd
;
2111 state
->smb1
.recv_status
= status
;
2112 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
2114 state
->smb1
.recv_iov
[0] = iov
[0];
2115 state
->smb1
.recv_iov
[1] = iov
[1];
2116 state
->smb1
.recv_iov
[2] = iov
[2];
2118 if (talloc_array_length(conn
->pending
) == 0) {
2119 tevent_req_done(req
);
2120 return NT_STATUS_OK
;
2123 tevent_req_defer_callback(req
, state
->ev
);
2124 tevent_req_done(req
);
2125 return NT_STATUS_RETRY
;
2128 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
2129 num_chained
= talloc_array_length(chain
);
2130 num_responses
= (num_iov
- 1)/2;
2132 if (num_responses
> num_chained
) {
2133 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2136 for (i
=0; i
<num_chained
; i
++) {
2137 size_t iov_idx
= 1 + (i
*2);
2138 struct iovec
*cur
= &iov
[iov_idx
];
2142 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2144 smbXcli_req_unset_pending(req
);
2147 * as we finish multiple requests here
2148 * we need to defer the callbacks as
2149 * they could destroy our current stack state.
2151 tevent_req_defer_callback(req
, state
->ev
);
2153 if (i
>= num_responses
) {
2154 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
2158 if (state
->smb1
.recv_iov
== NULL
) {
2160 * For requests with more than
2161 * one response, we have to readd the
2164 state
->smb1
.recv_iov
= talloc_zero_array(state
,
2167 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2172 state
->smb1
.recv_cmd
= cmd
;
2174 if (i
== (num_responses
- 1)) {
2176 * The last request in the chain gets the status
2178 state
->smb1
.recv_status
= status
;
2180 cmd
= CVAL(cur
[0].iov_base
, 0);
2181 state
->smb1
.recv_status
= NT_STATUS_OK
;
2184 state
->inbuf
= inbuf
;
2187 * Note: here we use talloc_reference() in a way
2188 * that does not expose it to the caller.
2190 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
2191 if (tevent_req_nomem(inbuf_ref
, req
)) {
2195 /* copy the related buffers */
2196 state
->smb1
.recv_iov
[0] = iov
[0];
2197 state
->smb1
.recv_iov
[1] = cur
[0];
2198 state
->smb1
.recv_iov
[2] = cur
[1];
2200 tevent_req_done(req
);
2203 return NT_STATUS_RETRY
;
2206 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
2207 TALLOC_CTX
*mem_ctx
,
2208 struct iovec
**piov
,
2212 uint32_t *pvwv_offset
,
2213 uint32_t *pnum_bytes
,
2215 uint32_t *pbytes_offset
,
2217 const struct smb1cli_req_expected_response
*expected
,
2218 size_t num_expected
)
2220 struct smbXcli_req_state
*state
=
2221 tevent_req_data(req
,
2222 struct smbXcli_req_state
);
2223 NTSTATUS status
= NT_STATUS_OK
;
2224 struct iovec
*recv_iov
= NULL
;
2225 uint8_t *hdr
= NULL
;
2227 uint32_t vwv_offset
= 0;
2228 uint16_t *vwv
= NULL
;
2229 uint32_t num_bytes
= 0;
2230 uint32_t bytes_offset
= 0;
2231 uint8_t *bytes
= NULL
;
2233 bool found_status
= false;
2234 bool found_size
= false;
2248 if (pvwv_offset
!= NULL
) {
2251 if (pnum_bytes
!= NULL
) {
2254 if (pbytes
!= NULL
) {
2257 if (pbytes_offset
!= NULL
) {
2260 if (pinbuf
!= NULL
) {
2264 if (state
->inbuf
!= NULL
) {
2265 recv_iov
= state
->smb1
.recv_iov
;
2266 state
->smb1
.recv_iov
= NULL
;
2267 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2268 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2269 wct
= recv_iov
[1].iov_len
/2;
2270 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2271 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2272 num_bytes
= recv_iov
[2].iov_len
;
2273 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2274 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2278 if (tevent_req_is_nterror(req
, &status
)) {
2279 for (i
=0; i
< num_expected
; i
++) {
2280 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2281 found_status
= true;
2287 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2293 if (num_expected
== 0) {
2294 found_status
= true;
2298 status
= state
->smb1
.recv_status
;
2300 for (i
=0; i
< num_expected
; i
++) {
2301 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2305 found_status
= true;
2306 if (expected
[i
].wct
== 0) {
2311 if (expected
[i
].wct
== wct
) {
2317 if (!found_status
) {
2322 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2326 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2338 if (pvwv_offset
!= NULL
) {
2339 *pvwv_offset
= vwv_offset
;
2341 if (pnum_bytes
!= NULL
) {
2342 *pnum_bytes
= num_bytes
;
2344 if (pbytes
!= NULL
) {
2347 if (pbytes_offset
!= NULL
) {
2348 *pbytes_offset
= bytes_offset
;
2350 if (pinbuf
!= NULL
) {
2351 *pinbuf
= state
->inbuf
;
2357 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2364 for (i
=0; i
<num_reqs
; i
++) {
2365 struct smbXcli_req_state
*state
;
2366 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2367 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2368 state
->smb1
.iov_count
-2);
2369 wct_ofs
= (wct_ofs
+ 3) & ~3;
2374 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2376 struct smbXcli_req_state
*first_state
=
2377 tevent_req_data(reqs
[0],
2378 struct smbXcli_req_state
);
2379 struct smbXcli_req_state
*state
;
2381 size_t chain_padding
= 0;
2383 struct iovec
*iov
= NULL
;
2384 struct iovec
*this_iov
;
2388 if (num_reqs
== 1) {
2389 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2390 first_state
->smb1
.iov
,
2391 first_state
->smb1
.iov_count
);
2395 for (i
=0; i
<num_reqs
; i
++) {
2396 if (!tevent_req_is_in_progress(reqs
[i
])) {
2397 return NT_STATUS_INTERNAL_ERROR
;
2400 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2402 if (state
->smb1
.iov_count
< 4) {
2403 return NT_STATUS_INVALID_PARAMETER_MIX
;
2408 * The NBT and SMB header
2421 iovlen
+= state
->smb1
.iov_count
- 2;
2424 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2426 return NT_STATUS_NO_MEMORY
;
2429 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2430 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2431 if (first_state
->smb1
.chained_requests
== NULL
) {
2433 return NT_STATUS_NO_MEMORY
;
2436 wct_offset
= HDR_WCT
;
2439 for (i
=0; i
<num_reqs
; i
++) {
2440 size_t next_padding
= 0;
2443 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2445 if (i
< num_reqs
-1) {
2446 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2447 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2449 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2450 return NT_STATUS_INVALID_PARAMETER_MIX
;
2454 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2455 state
->smb1
.iov_count
-2) + 1;
2456 if ((wct_offset
% 4) != 0) {
2457 next_padding
= 4 - (wct_offset
% 4);
2459 wct_offset
+= next_padding
;
2460 vwv
= state
->smb1
.vwv
;
2462 if (i
< num_reqs
-1) {
2463 struct smbXcli_req_state
*next_state
=
2464 tevent_req_data(reqs
[i
+1],
2465 struct smbXcli_req_state
);
2466 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2468 SSVAL(vwv
+1, 0, wct_offset
);
2469 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2470 /* properly end the chain */
2471 SCVAL(vwv
+0, 0, 0xff);
2472 SCVAL(vwv
+0, 1, 0xff);
2478 * The NBT and SMB header
2480 this_iov
[0] = state
->smb1
.iov
[0];
2481 this_iov
[1] = state
->smb1
.iov
[1];
2485 * This one is a bit subtle. We have to add
2486 * chain_padding bytes between the requests, and we
2487 * have to also include the wct field of the
2488 * subsequent requests. We use the subsequent header
2489 * for the padding, it contains the wct field in its
2492 this_iov
[0].iov_len
= chain_padding
+1;
2493 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2494 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2495 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2500 * copy the words and bytes
2502 memcpy(this_iov
, state
->smb1
.iov
+2,
2503 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2504 this_iov
+= state
->smb1
.iov_count
- 2;
2505 chain_padding
= next_padding
;
2508 nbt_len
= iov_buflen(&iov
[1], iovlen
-1);
2509 if ((nbt_len
== -1) || (nbt_len
> first_state
->conn
->smb1
.max_xmit
)) {
2511 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2512 return NT_STATUS_INVALID_PARAMETER_MIX
;
2515 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2516 if (!NT_STATUS_IS_OK(status
)) {
2518 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2522 return NT_STATUS_OK
;
2525 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2527 return ((tevent_queue_length(conn
->outgoing
) != 0)
2528 || (talloc_array_length(conn
->pending
) != 0));
2531 bool smbXcli_conn_dfs_supported(struct smbXcli_conn
*conn
)
2533 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
2534 return (smb2cli_conn_server_capabilities(conn
) & SMB2_CAP_DFS
);
2537 return (smb1cli_conn_capabilities(conn
) & CAP_DFS
);
2540 bool smb2cli_conn_req_possible(struct smbXcli_conn
*conn
, uint32_t *max_dyn_len
)
2542 uint16_t credits
= 1;
2544 if (conn
->smb2
.cur_credits
== 0) {
2545 if (max_dyn_len
!= NULL
) {
2551 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2552 credits
= conn
->smb2
.cur_credits
;
2555 if (max_dyn_len
!= NULL
) {
2556 *max_dyn_len
= credits
* 65536;
2562 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2564 return conn
->smb2
.server
.capabilities
;
2567 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2569 return conn
->smb2
.server
.security_mode
;
2572 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2574 return conn
->smb2
.server
.max_trans_size
;
2577 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2579 return conn
->smb2
.server
.max_read_size
;
2582 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2584 return conn
->smb2
.server
.max_write_size
;
2587 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2588 uint16_t max_credits
)
2590 conn
->smb2
.max_credits
= max_credits
;
2593 uint8_t smb2cli_conn_get_io_priority(struct smbXcli_conn
*conn
)
2595 if (conn
->protocol
< PROTOCOL_SMB3_11
) {
2599 return conn
->smb2
.io_priority
;
2602 void smb2cli_conn_set_io_priority(struct smbXcli_conn
*conn
,
2603 uint8_t io_priority
)
2605 conn
->smb2
.io_priority
= io_priority
;
2608 uint32_t smb2cli_conn_cc_chunk_len(struct smbXcli_conn
*conn
)
2610 return conn
->smb2
.cc_chunk_len
;
2613 void smb2cli_conn_set_cc_chunk_len(struct smbXcli_conn
*conn
,
2616 conn
->smb2
.cc_chunk_len
= chunk_len
;
2619 uint32_t smb2cli_conn_cc_max_chunks(struct smbXcli_conn
*conn
)
2621 return conn
->smb2
.cc_max_chunks
;
2624 void smb2cli_conn_set_cc_max_chunks(struct smbXcli_conn
*conn
,
2625 uint32_t max_chunks
)
2627 conn
->smb2
.cc_max_chunks
= max_chunks
;
2630 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2632 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2634 struct smbXcli_req_state
*state
=
2635 tevent_req_data(req
,
2636 struct smbXcli_req_state
);
2637 struct smbXcli_tcon
*tcon
= state
->tcon
;
2638 struct smbXcli_session
*session
= state
->session
;
2639 uint8_t *fixed
= state
->smb2
.pad
;
2640 uint16_t fixed_len
= 4;
2641 struct tevent_req
*subreq
;
2642 struct smbXcli_req_state
*substate
;
2645 SSVAL(fixed
, 0, 0x04);
2648 subreq
= smb2cli_req_create(state
, state
->ev
,
2656 if (subreq
== NULL
) {
2659 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2661 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, state
->smb2
.cancel_flags
);
2662 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, state
->smb2
.cancel_mid
);
2663 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, state
->smb2
.cancel_aid
);
2665 status
= smb2cli_req_compound_submit(&subreq
, 1);
2666 if (!NT_STATUS_IS_OK(status
)) {
2667 TALLOC_FREE(subreq
);
2671 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2676 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2678 /* we do not care about the result */
2679 TALLOC_FREE(subreq
);
2682 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2683 struct tevent_context
*ev
,
2684 struct smbXcli_conn
*conn
,
2686 uint32_t additional_flags
,
2687 uint32_t clear_flags
,
2688 uint32_t timeout_msec
,
2689 struct smbXcli_tcon
*tcon
,
2690 struct smbXcli_session
*session
,
2691 const uint8_t *fixed
,
2695 uint32_t max_dyn_len
)
2697 struct tevent_req
*req
;
2698 struct smbXcli_req_state
*state
;
2702 bool use_channel_sequence
= false;
2703 uint16_t channel_sequence
= 0;
2704 bool use_replay_flag
= false;
2706 req
= tevent_req_create(mem_ctx
, &state
,
2707 struct smbXcli_req_state
);
2714 state
->session
= session
;
2717 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_PERSISTENT_HANDLES
) {
2718 use_channel_sequence
= true;
2719 } else if (conn
->smb2
.server
.capabilities
& SMB2_CAP_MULTI_CHANNEL
) {
2720 use_channel_sequence
= true;
2723 if (smbXcli_conn_protocol(conn
) >= PROTOCOL_SMB3_00
) {
2724 use_replay_flag
= true;
2727 if (smbXcli_conn_protocol(conn
) >= PROTOCOL_SMB3_11
) {
2728 flags
|= SMB2_PRIORITY_VALUE_TO_MASK(conn
->smb2
.io_priority
);
2732 uid
= session
->smb2
->session_id
;
2734 if (use_channel_sequence
) {
2735 channel_sequence
= session
->smb2
->channel_sequence
;
2738 if (use_replay_flag
&& session
->smb2
->replay_active
) {
2739 additional_flags
|= SMB2_HDR_FLAG_REPLAY_OPERATION
;
2742 state
->smb2
.should_sign
= session
->smb2
->should_sign
;
2743 state
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
2745 if (cmd
== SMB2_OP_SESSSETUP
&&
2746 session
->smb2_channel
.signing_key
.length
== 0 &&
2747 session
->smb2
->signing_key
.length
!= 0)
2750 * a session bind needs to be signed
2752 state
->smb2
.should_sign
= true;
2755 if (cmd
== SMB2_OP_SESSSETUP
&&
2756 session
->smb2_channel
.signing_key
.length
== 0) {
2757 state
->smb2
.should_encrypt
= false;
2760 if (additional_flags
& SMB2_HDR_FLAG_SIGNED
) {
2761 if (session
->smb2_channel
.signing_key
.length
== 0) {
2762 tevent_req_nterror(req
, NT_STATUS_NO_USER_SESSION_KEY
);
2766 additional_flags
&= ~SMB2_HDR_FLAG_SIGNED
;
2767 state
->smb2
.should_sign
= true;
2772 tid
= tcon
->smb2
.tcon_id
;
2774 if (tcon
->smb2
.should_sign
) {
2775 state
->smb2
.should_sign
= true;
2777 if (tcon
->smb2
.should_encrypt
) {
2778 state
->smb2
.should_encrypt
= true;
2782 if (state
->smb2
.should_encrypt
) {
2783 state
->smb2
.should_sign
= false;
2786 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2787 if (state
->smb2
.recv_iov
== NULL
) {
2792 flags
|= additional_flags
;
2793 flags
&= ~clear_flags
;
2795 state
->smb2
.fixed
= fixed
;
2796 state
->smb2
.fixed_len
= fixed_len
;
2797 state
->smb2
.dyn
= dyn
;
2798 state
->smb2
.dyn_len
= dyn_len
;
2799 state
->smb2
.max_dyn_len
= max_dyn_len
;
2801 if (state
->smb2
.should_encrypt
) {
2802 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2803 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
2806 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2807 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2808 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2809 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CHANNEL_SEQUENCE
, channel_sequence
);
2810 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2811 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, 0); /* reserved */
2812 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2813 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2816 case SMB2_OP_CANCEL
:
2817 state
->one_way
= true;
2821 * If this is a dummy request, it will have
2822 * UINT64_MAX as message id.
2823 * If we send on break acknowledgement,
2824 * this gets overwritten later.
2826 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2830 if (timeout_msec
> 0) {
2831 struct timeval endtime
;
2833 endtime
= timeval_current_ofs_msec(timeout_msec
);
2834 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2842 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2844 struct smbXcli_req_state
*state
=
2845 tevent_req_data(req
,
2846 struct smbXcli_req_state
);
2848 state
->smb2
.notify_async
= true;
2851 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2852 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2853 TALLOC_CTX
*tmp_mem
,
2856 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2859 struct smbXcli_req_state
*state
;
2860 struct tevent_req
*subreq
;
2862 int i
, num_iov
, nbt_len
;
2864 const DATA_BLOB
*encryption_key
= NULL
;
2865 uint64_t encryption_session_id
= 0;
2868 * 1 for the nbt length, optional TRANSFORM
2869 * per request: HDR, fixed, dyn, padding
2870 * -1 because the last one does not need padding
2873 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 1 + 4*num_reqs
- 1);
2875 return NT_STATUS_NO_MEMORY
;
2882 * the session of the first request that requires encryption
2883 * specifies the encryption key.
2885 for (i
=0; i
<num_reqs
; i
++) {
2886 if (!tevent_req_is_in_progress(reqs
[i
])) {
2887 return NT_STATUS_INTERNAL_ERROR
;
2890 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2892 if (!smbXcli_conn_is_connected(state
->conn
)) {
2893 return NT_STATUS_CONNECTION_DISCONNECTED
;
2896 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2897 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2898 return NT_STATUS_REVISION_MISMATCH
;
2901 if (state
->session
== NULL
) {
2905 if (!state
->smb2
.should_encrypt
) {
2909 encryption_key
= &state
->session
->smb2
->encryption_key
;
2910 if (encryption_key
->length
== 0) {
2911 return NT_STATUS_INVALID_PARAMETER_MIX
;
2914 encryption_session_id
= state
->session
->smb2
->session_id
;
2917 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
2918 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
2921 SBVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2922 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
,
2923 state
->session
->smb2
->nonce_low
);
2924 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
2925 state
->session
->smb2
->nonce_high
);
2926 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
,
2927 encryption_session_id
);
2929 state
->session
->smb2
->nonce_low
+= 1;
2930 if (state
->session
->smb2
->nonce_low
== 0) {
2931 state
->session
->smb2
->nonce_high
+= 1;
2932 state
->session
->smb2
->nonce_low
+= 1;
2935 nbt_len
+= SMB2_TF_HDR_SIZE
;
2939 for (i
=0; i
<num_reqs
; i
++) {
2948 const DATA_BLOB
*signing_key
= NULL
;
2950 if (!tevent_req_is_in_progress(reqs
[i
])) {
2951 return NT_STATUS_INTERNAL_ERROR
;
2954 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2956 if (!smbXcli_conn_is_connected(state
->conn
)) {
2957 return NT_STATUS_CONNECTION_DISCONNECTED
;
2960 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2961 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2962 return NT_STATUS_REVISION_MISMATCH
;
2965 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2966 if (opcode
== SMB2_OP_CANCEL
) {
2970 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2972 return NT_STATUS_CONNECTION_ABORTED
;
2975 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2976 uint32_t max_dyn_len
= 1;
2978 max_dyn_len
= MAX(max_dyn_len
, state
->smb2
.dyn_len
);
2979 max_dyn_len
= MAX(max_dyn_len
, state
->smb2
.max_dyn_len
);
2981 charge
= (max_dyn_len
- 1)/ 65536 + 1;
2986 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2988 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2989 if (avail
< charge
) {
2990 return NT_STATUS_INTERNAL_ERROR
;
2994 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2995 credits
= state
->conn
->smb2
.max_credits
-
2996 state
->conn
->smb2
.cur_credits
;
2998 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
3002 mid
= state
->conn
->smb2
.mid
;
3003 state
->conn
->smb2
.mid
+= charge
;
3004 state
->conn
->smb2
.cur_credits
-= charge
;
3006 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
3007 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
3009 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
3010 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
3012 state
->smb2
.cancel_flags
= 0;
3013 state
->smb2
.cancel_mid
= mid
;
3014 state
->smb2
.cancel_aid
= 0;
3017 if (state
->session
&& encryption_key
== NULL
) {
3019 * We prefer the channel signing key if it is
3022 if (state
->smb2
.should_sign
) {
3023 signing_key
= &state
->session
->smb2_channel
.signing_key
;
3027 * If it is a channel binding, we already have the main
3028 * signing key and try that one.
3030 if (signing_key
&& signing_key
->length
== 0) {
3031 signing_key
= &state
->session
->smb2
->signing_key
;
3035 * If we do not have any session key yet, we skip the
3036 * signing of SMB2_OP_SESSSETUP requests.
3038 if (signing_key
&& signing_key
->length
== 0) {
3044 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
3045 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
3048 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
3049 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
3052 if (state
->smb2
.dyn
!= NULL
) {
3053 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
3054 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
3058 reqlen
= sizeof(state
->smb2
.hdr
);
3059 reqlen
+= state
->smb2
.fixed_len
;
3060 reqlen
+= state
->smb2
.dyn_len
;
3062 if (i
< num_reqs
-1) {
3063 if ((reqlen
% 8) > 0) {
3064 uint8_t pad
= 8 - (reqlen
% 8);
3065 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
3066 iov
[num_iov
].iov_len
= pad
;
3070 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
3073 state
->smb2
.encryption_session_id
= encryption_session_id
;
3075 if (signing_key
!= NULL
) {
3078 status
= smb2_signing_sign_pdu(*signing_key
,
3079 state
->session
->conn
->protocol
,
3080 &iov
[hdr_iov
], num_iov
- hdr_iov
);
3081 if (!NT_STATUS_IS_OK(status
)) {
3088 ret
= smbXcli_req_set_pending(reqs
[i
]);
3090 return NT_STATUS_NO_MEMORY
;
3094 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
3095 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
3096 iov
[0].iov_base
= state
->length_hdr
;
3097 iov
[0].iov_len
= sizeof(state
->length_hdr
);
3099 if (encryption_key
!= NULL
) {
3101 size_t buflen
= nbt_len
- SMB2_TF_HDR_SIZE
;
3105 buf
= talloc_array(iov
, uint8_t, buflen
);
3107 return NT_STATUS_NO_MEMORY
;
3111 * We copy the buffers before encrypting them,
3112 * this is at least currently needed for the
3113 * to keep state->smb2.hdr.
3115 * Also the callers may expect there buffers
3118 for (vi
= tf_iov
+ 1; vi
< num_iov
; vi
++) {
3119 struct iovec
*v
= &iov
[vi
];
3120 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
3122 memcpy(buf
, o
, v
->iov_len
);
3123 v
->iov_base
= (void *)buf
;
3127 status
= smb2_signing_encrypt_pdu(*encryption_key
,
3128 state
->conn
->smb2
.server
.cipher
,
3129 &iov
[tf_iov
], num_iov
- tf_iov
);
3130 if (!NT_STATUS_IS_OK(status
)) {
3135 if (state
->conn
->dispatch_incoming
== NULL
) {
3136 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3139 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
3140 state
->conn
->write_fd
, false, iov
, num_iov
);
3141 if (subreq
== NULL
) {
3142 return NT_STATUS_NO_MEMORY
;
3144 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
3145 return NT_STATUS_OK
;
3148 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
3150 struct smbXcli_req_state
*state
=
3151 tevent_req_data(req
,
3152 struct smbXcli_req_state
);
3154 state
->smb2
.credit_charge
= charge
;
3157 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
3158 struct tevent_context
*ev
,
3159 struct smbXcli_conn
*conn
,
3161 uint32_t additional_flags
,
3162 uint32_t clear_flags
,
3163 uint32_t timeout_msec
,
3164 struct smbXcli_tcon
*tcon
,
3165 struct smbXcli_session
*session
,
3166 const uint8_t *fixed
,
3170 uint32_t max_dyn_len
)
3172 struct tevent_req
*req
;
3175 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
3176 additional_flags
, clear_flags
,
3185 if (!tevent_req_is_in_progress(req
)) {
3186 return tevent_req_post(req
, ev
);
3188 status
= smb2cli_req_compound_submit(&req
, 1);
3189 if (tevent_req_nterror(req
, status
)) {
3190 return tevent_req_post(req
, ev
);
3195 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
3197 struct tevent_req
*req
=
3198 tevent_req_callback_data(subreq
,
3200 struct smbXcli_req_state
*state
=
3201 tevent_req_data(req
,
3202 struct smbXcli_req_state
);
3206 nwritten
= writev_recv(subreq
, &err
);
3207 TALLOC_FREE(subreq
);
3208 if (nwritten
== -1) {
3209 /* here, we need to notify all pending requests */
3210 NTSTATUS status
= map_nt_error_from_unix_common(err
);
3211 smbXcli_conn_disconnect(state
->conn
, status
);
3216 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
3219 TALLOC_CTX
*mem_ctx
,
3220 struct iovec
**piov
, int *pnum_iov
)
3225 uint8_t *first_hdr
= buf
;
3226 size_t verified_buflen
= 0;
3230 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
3232 return NT_STATUS_NO_MEMORY
;
3235 while (taken
< buflen
) {
3236 size_t len
= buflen
- taken
;
3237 uint8_t *hdr
= first_hdr
+ taken
;
3240 size_t next_command_ofs
;
3242 struct iovec
*iov_tmp
;
3244 if (verified_buflen
> taken
) {
3245 len
= verified_buflen
- taken
;
3252 DEBUG(10, ("%d bytes left, expected at least %d\n",
3256 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
3257 struct smbXcli_session
*s
;
3259 struct iovec tf_iov
[2];
3263 if (len
< SMB2_TF_HDR_SIZE
) {
3264 DEBUG(10, ("%d bytes left, expected at least %d\n",
3265 (int)len
, SMB2_TF_HDR_SIZE
));
3269 tf_len
= SMB2_TF_HDR_SIZE
;
3272 hdr
= first_hdr
+ taken
;
3273 enc_len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
3274 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3276 if (len
< SMB2_TF_HDR_SIZE
+ enc_len
) {
3277 DEBUG(10, ("%d bytes left, expected at least %d\n",
3279 (int)(SMB2_TF_HDR_SIZE
+ enc_len
)));
3284 for (; s
; s
= s
->next
) {
3285 if (s
->smb2
->session_id
!= uid
) {
3292 DEBUG(10, ("unknown session_id %llu\n",
3293 (unsigned long long)uid
));
3297 tf_iov
[0].iov_base
= (void *)tf
;
3298 tf_iov
[0].iov_len
= tf_len
;
3299 tf_iov
[1].iov_base
= (void *)hdr
;
3300 tf_iov
[1].iov_len
= enc_len
;
3302 status
= smb2_signing_decrypt_pdu(s
->smb2
->decryption_key
,
3303 conn
->smb2
.server
.cipher
,
3305 if (!NT_STATUS_IS_OK(status
)) {
3310 verified_buflen
= taken
+ enc_len
;
3315 * We need the header plus the body length field
3318 if (len
< SMB2_HDR_BODY
+ 2) {
3319 DEBUG(10, ("%d bytes left, expected at least %d\n",
3320 (int)len
, SMB2_HDR_BODY
));
3323 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
3324 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
3328 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
3329 DEBUG(10, ("Got HDR len %d, expected %d\n",
3330 SVAL(hdr
, 4), SMB2_HDR_BODY
));
3335 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
3336 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
3338 if (next_command_ofs
!= 0) {
3339 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
3342 if (next_command_ofs
> full_size
) {
3345 full_size
= next_command_ofs
;
3347 if (body_size
< 2) {
3350 body_size
&= 0xfffe;
3352 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
3356 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
3358 if (iov_tmp
== NULL
) {
3360 return NT_STATUS_NO_MEMORY
;
3363 cur
= &iov
[num_iov
];
3366 cur
[0].iov_base
= tf
;
3367 cur
[0].iov_len
= tf_len
;
3368 cur
[1].iov_base
= hdr
;
3369 cur
[1].iov_len
= SMB2_HDR_BODY
;
3370 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
3371 cur
[2].iov_len
= body_size
;
3372 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
3373 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
3379 *pnum_iov
= num_iov
;
3380 return NT_STATUS_OK
;
3384 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3387 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
3390 size_t num_pending
= talloc_array_length(conn
->pending
);
3393 for (i
=0; i
<num_pending
; i
++) {
3394 struct tevent_req
*req
= conn
->pending
[i
];
3395 struct smbXcli_req_state
*state
=
3396 tevent_req_data(req
,
3397 struct smbXcli_req_state
);
3399 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
3406 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3407 TALLOC_CTX
*tmp_mem
,
3410 struct tevent_req
*req
;
3411 struct smbXcli_req_state
*state
= NULL
;
3416 struct smbXcli_session
*last_session
= NULL
;
3417 size_t inbuf_len
= smb_len_tcp(inbuf
);
3419 status
= smb2cli_inbuf_parse_compound(conn
,
3420 inbuf
+ NBT_HDR_SIZE
,
3424 if (!NT_STATUS_IS_OK(status
)) {
3428 for (i
=0; i
<num_iov
; i
+=4) {
3429 uint8_t *inbuf_ref
= NULL
;
3430 struct iovec
*cur
= &iov
[i
];
3431 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3432 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3433 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3434 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3435 uint16_t req_opcode
;
3437 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3438 uint32_t new_credits
;
3439 struct smbXcli_session
*session
= NULL
;
3440 const DATA_BLOB
*signing_key
= NULL
;
3441 bool was_encrypted
= false;
3443 new_credits
= conn
->smb2
.cur_credits
;
3444 new_credits
+= credits
;
3445 if (new_credits
> UINT16_MAX
) {
3446 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3448 conn
->smb2
.cur_credits
+= credits
;
3450 req
= smb2cli_conn_find_pending(conn
, mid
);
3452 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3454 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3456 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3457 if (opcode
!= req_opcode
) {
3458 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3460 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3462 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3463 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3466 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3467 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3468 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3469 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3471 if (state
->smb2
.got_async
) {
3472 /* We only expect one STATUS_PENDING response */
3473 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3475 state
->smb2
.got_async
= true;
3478 * async interim responses are not signed,
3479 * even if the SMB2_HDR_FLAG_SIGNED flag
3482 state
->smb2
.cancel_flags
= SMB2_HDR_FLAG_ASYNC
;
3483 state
->smb2
.cancel_mid
= 0;
3484 state
->smb2
.cancel_aid
= async_id
;
3486 if (state
->smb2
.notify_async
) {
3487 tevent_req_defer_callback(req
, state
->ev
);
3488 tevent_req_notify_callback(req
);
3493 session
= state
->session
;
3494 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3495 session
= last_session
;
3497 last_session
= session
;
3499 if (state
->smb2
.should_sign
) {
3500 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3501 return NT_STATUS_ACCESS_DENIED
;
3505 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3506 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3508 if (session
== NULL
) {
3509 struct smbXcli_session
*s
;
3511 s
= state
->conn
->sessions
;
3512 for (; s
; s
= s
->next
) {
3513 if (s
->smb2
->session_id
!= uid
) {
3522 if (session
== NULL
) {
3523 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3526 last_session
= session
;
3527 signing_key
= &session
->smb2_channel
.signing_key
;
3530 if (opcode
== SMB2_OP_SESSSETUP
) {
3532 * We prefer the channel signing key, if it is
3535 * If we do not have a channel signing key yet,
3536 * we try the main signing key, if it is not
3537 * the final response.
3539 if (signing_key
&& signing_key
->length
== 0 &&
3540 !NT_STATUS_IS_OK(status
)) {
3541 signing_key
= &session
->smb2
->signing_key
;
3544 if (signing_key
&& signing_key
->length
== 0) {
3546 * If we do not have a session key to
3547 * verify the signature, we defer the
3548 * signing check to the caller.
3550 * The caller gets NT_STATUS_OK, it
3552 * smb2cli_session_set_session_key()
3554 * smb2cli_session_set_channel_key()
3555 * which will check the signature
3556 * with the channel signing key.
3562 if (cur
[0].iov_len
== SMB2_TF_HDR_SIZE
) {
3563 const uint8_t *tf
= (const uint8_t *)cur
[0].iov_base
;
3564 uint64_t uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3567 * If the response was encrypted in a SMB2_TRANSFORM
3568 * pdu, which belongs to the correct session,
3569 * we do not need to do signing checks
3571 * It could be the session the response belongs to
3572 * or the session that was used to encrypt the
3573 * SMB2_TRANSFORM request.
3575 if ((session
&& session
->smb2
->session_id
== uid
) ||
3576 (state
->smb2
.encryption_session_id
== uid
)) {
3578 was_encrypted
= true;
3582 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3584 * if the server returns NT_STATUS_USER_SESSION_DELETED
3585 * the response is not signed and we should
3586 * propagate the NT_STATUS_USER_SESSION_DELETED
3587 * status to the caller.
3589 state
->smb2
.signing_skipped
= true;
3593 if (NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3595 * if the server returns
3596 * NT_STATUS_INVALID_PARAMETER
3597 * the response might not be encrypted.
3599 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3600 state
->smb2
.signing_skipped
= true;
3605 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3606 if (!state
->smb2
.signing_skipped
) {
3607 return NT_STATUS_ACCESS_DENIED
;
3611 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3612 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3613 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3615 * if the server returns
3616 * NT_STATUS_NETWORK_NAME_DELETED
3617 * NT_STATUS_FILE_CLOSED
3618 * NT_STATUS_INVALID_PARAMETER
3619 * the response might not be signed
3620 * as this happens before the signing checks.
3622 * If server echos the signature (or all zeros)
3623 * we should report the status from the server
3629 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3630 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3633 state
->smb2
.signing_skipped
= true;
3639 static const uint8_t zeros
[16];
3641 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3645 state
->smb2
.signing_skipped
= true;
3652 status
= smb2_signing_check_pdu(*signing_key
,
3653 state
->conn
->protocol
,
3655 if (!NT_STATUS_IS_OK(status
)) {
3657 * If the signing check fails, we disconnect
3664 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
) &&
3665 (session
!= NULL
) && session
->disconnect_expired
)
3668 * this should be a short term hack
3669 * until the upper layers have implemented
3670 * re-authentication.
3675 smbXcli_req_unset_pending(req
);
3678 * There might be more than one response
3679 * we need to defer the notifications
3681 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3686 tevent_req_defer_callback(req
, state
->ev
);
3690 * Note: here we use talloc_reference() in a way
3691 * that does not expose it to the caller.
3693 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3694 if (tevent_req_nomem(inbuf_ref
, req
)) {
3698 /* copy the related buffers */
3699 state
->smb2
.recv_iov
[0] = cur
[1];
3700 state
->smb2
.recv_iov
[1] = cur
[2];
3701 state
->smb2
.recv_iov
[2] = cur
[3];
3703 tevent_req_done(req
);
3707 return NT_STATUS_RETRY
;
3710 return NT_STATUS_OK
;
3713 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3714 struct iovec
**piov
,
3715 const struct smb2cli_req_expected_response
*expected
,
3716 size_t num_expected
)
3718 struct smbXcli_req_state
*state
=
3719 tevent_req_data(req
,
3720 struct smbXcli_req_state
);
3723 bool found_status
= false;
3724 bool found_size
= false;
3731 if (tevent_req_is_in_progress(req
) && state
->smb2
.got_async
) {
3732 return STATUS_PENDING
;
3735 if (tevent_req_is_nterror(req
, &status
)) {
3736 for (i
=0; i
< num_expected
; i
++) {
3737 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3738 found_status
= true;
3744 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3750 if (num_expected
== 0) {
3751 found_status
= true;
3755 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3756 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3758 for (i
=0; i
< num_expected
; i
++) {
3759 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3763 found_status
= true;
3764 if (expected
[i
].body_size
== 0) {
3769 if (expected
[i
].body_size
== body_size
) {
3775 if (!found_status
) {
3779 if (state
->smb2
.signing_skipped
) {
3780 if (num_expected
> 0) {
3781 return NT_STATUS_ACCESS_DENIED
;
3783 if (!NT_STATUS_IS_ERR(status
)) {
3784 return NT_STATUS_ACCESS_DENIED
;
3789 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3793 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3799 NTSTATUS
smb2cli_req_get_sent_iov(struct tevent_req
*req
,
3800 struct iovec
*sent_iov
)
3802 struct smbXcli_req_state
*state
=
3803 tevent_req_data(req
,
3804 struct smbXcli_req_state
);
3806 if (tevent_req_is_in_progress(req
)) {
3807 return STATUS_PENDING
;
3810 sent_iov
[0].iov_base
= state
->smb2
.hdr
;
3811 sent_iov
[0].iov_len
= sizeof(state
->smb2
.hdr
);
3813 sent_iov
[1].iov_base
= discard_const(state
->smb2
.fixed
);
3814 sent_iov
[1].iov_len
= state
->smb2
.fixed_len
;
3816 if (state
->smb2
.dyn
!= NULL
) {
3817 sent_iov
[2].iov_base
= discard_const(state
->smb2
.dyn
);
3818 sent_iov
[2].iov_len
= state
->smb2
.dyn_len
;
3820 sent_iov
[2].iov_base
= NULL
;
3821 sent_iov
[2].iov_len
= 0;
3824 return NT_STATUS_OK
;
3827 static const struct {
3828 enum protocol_types proto
;
3829 const char *smb1_name
;
3830 } smb1cli_prots
[] = {
3831 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3832 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3833 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3834 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3835 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3836 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3837 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3838 {PROTOCOL_LANMAN2
, "Samba"},
3839 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3840 {PROTOCOL_NT1
, "NT LM 0.12"},
3841 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3842 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3845 static const struct {
3846 enum protocol_types proto
;
3847 uint16_t smb2_dialect
;
3848 } smb2cli_prots
[] = {
3849 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3850 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3851 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3852 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3853 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3854 {PROTOCOL_SMB3_02
, SMB3_DIALECT_REVISION_302
},
3855 {PROTOCOL_SMB3_10
, SMB3_DIALECT_REVISION_310
},
3856 {PROTOCOL_SMB3_11
, SMB3_DIALECT_REVISION_311
},
3859 struct smbXcli_negprot_state
{
3860 struct smbXcli_conn
*conn
;
3861 struct tevent_context
*ev
;
3862 uint32_t timeout_msec
;
3869 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3870 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3871 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3872 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3873 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3874 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3878 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3879 struct tevent_context
*ev
,
3880 struct smbXcli_conn
*conn
,
3881 uint32_t timeout_msec
,
3882 enum protocol_types min_protocol
,
3883 enum protocol_types max_protocol
)
3885 struct tevent_req
*req
, *subreq
;
3886 struct smbXcli_negprot_state
*state
;
3888 req
= tevent_req_create(mem_ctx
, &state
,
3889 struct smbXcli_negprot_state
);
3895 state
->timeout_msec
= timeout_msec
;
3897 if (min_protocol
== PROTOCOL_NONE
) {
3898 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3899 return tevent_req_post(req
, ev
);
3902 if (max_protocol
== PROTOCOL_NONE
) {
3903 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3904 return tevent_req_post(req
, ev
);
3907 if (min_protocol
> max_protocol
) {
3908 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3909 return tevent_req_post(req
, ev
);
3912 conn
->min_protocol
= min_protocol
;
3913 conn
->max_protocol
= max_protocol
;
3914 conn
->protocol
= PROTOCOL_NONE
;
3916 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3917 (max_protocol
< PROTOCOL_SMB2_02
)) {
3921 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3923 subreq
= smbXcli_negprot_smb1_subreq(state
);
3924 if (tevent_req_nomem(subreq
, req
)) {
3925 return tevent_req_post(req
, ev
);
3927 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3931 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3932 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3936 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3939 * As we're starting with an SMB2 negprot, emulate Windows
3940 * and ask for 31 credits in the initial SMB2 negprot.
3941 * If we don't and leave requested credits at
3942 * zero, MacOSX servers return zero credits on
3943 * the negprot reply and we fail to connect.
3945 smb2cli_conn_set_max_credits(conn
,
3946 WINDOWS_CLIENT_PURE_SMB2_NEGPROT_INITIAL_CREDIT_ASK
);
3948 subreq
= smbXcli_negprot_smb2_subreq(state
);
3949 if (tevent_req_nomem(subreq
, req
)) {
3950 return tevent_req_post(req
, ev
);
3952 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3957 * We send an SMB1 negprot with the SMB2 dialects
3958 * and expect a SMB1 or a SMB2 response.
3960 * smbXcli_negprot_dispatch_incoming() will fix the
3961 * callback to match protocol of the response.
3963 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3965 subreq
= smbXcli_negprot_smb1_subreq(state
);
3966 if (tevent_req_nomem(subreq
, req
)) {
3967 return tevent_req_post(req
, ev
);
3969 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3973 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3975 struct tevent_req
*req
=
3976 tevent_req_callback_data(subreq
,
3981 * we just want the low level error
3983 status
= tevent_req_simple_recv_ntstatus(subreq
);
3984 TALLOC_FREE(subreq
);
3985 if (tevent_req_nterror(req
, status
)) {
3989 /* this should never happen */
3990 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3993 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3996 DATA_BLOB bytes
= data_blob_null
;
4000 /* setup the protocol strings */
4001 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
4005 if (smb1cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4009 if (smb1cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4013 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
4019 * We now it is already ascii and
4020 * we want NULL termination.
4022 ok
= data_blob_append(state
, &bytes
,
4023 smb1cli_prots
[i
].smb1_name
,
4024 strlen(smb1cli_prots
[i
].smb1_name
)+1);
4030 smb1cli_req_flags(state
->conn
->max_protocol
,
4031 state
->conn
->smb1
.client
.capabilities
,
4036 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
4040 state
->timeout_msec
,
4041 0xFFFE, 0, NULL
, /* pid, tid, session */
4042 0, NULL
, /* wct, vwv */
4043 bytes
.length
, bytes
.data
);
4046 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
4048 struct tevent_req
*req
=
4049 tevent_req_callback_data(subreq
,
4051 struct smbXcli_negprot_state
*state
=
4052 tevent_req_data(req
,
4053 struct smbXcli_negprot_state
);
4054 struct smbXcli_conn
*conn
= state
->conn
;
4055 struct iovec
*recv_iov
= NULL
;
4064 size_t num_prots
= 0;
4066 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
4067 uint32_t both_capabilities
;
4068 uint32_t server_capabilities
= 0;
4069 uint32_t capabilities
;
4070 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
4071 uint32_t server_max_xmit
= 0;
4073 uint32_t server_max_mux
= 0;
4074 uint16_t server_security_mode
= 0;
4075 uint32_t server_session_key
= 0;
4076 bool server_readbraw
= false;
4077 bool server_writebraw
= false;
4078 bool server_lockread
= false;
4079 bool server_writeunlock
= false;
4080 struct GUID server_guid
= GUID_zero();
4081 DATA_BLOB server_gss_blob
= data_blob_null
;
4082 uint8_t server_challenge
[8];
4083 char *server_workgroup
= NULL
;
4084 char *server_name
= NULL
;
4085 int server_time_zone
= 0;
4086 NTTIME server_system_time
= 0;
4087 static const struct smb1cli_req_expected_response expected
[] = {
4089 .status
= NT_STATUS_OK
,
4090 .wct
= 0x11, /* NT1 */
4093 .status
= NT_STATUS_OK
,
4094 .wct
= 0x0D, /* LM */
4097 .status
= NT_STATUS_OK
,
4098 .wct
= 0x01, /* CORE */
4102 ZERO_STRUCT(server_challenge
);
4104 status
= smb1cli_req_recv(subreq
, state
,
4109 NULL
, /* pvwv_offset */
4112 NULL
, /* pbytes_offset */
4114 expected
, ARRAY_SIZE(expected
));
4115 TALLOC_FREE(subreq
);
4116 if (tevent_req_nterror(req
, status
)) {
4120 flags
= CVAL(inhdr
, HDR_FLG
);
4122 protnum
= SVAL(vwv
, 0);
4124 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
4125 if (smb1cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4129 if (smb1cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4133 if (protnum
!= num_prots
) {
4138 conn
->protocol
= smb1cli_prots
[i
].proto
;
4142 if (conn
->protocol
== PROTOCOL_NONE
) {
4143 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4147 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
4148 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
4149 "and the selected protocol level doesn't support it.\n"));
4150 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
4154 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
4155 server_lockread
= true;
4156 server_writeunlock
= true;
4159 if (conn
->protocol
>= PROTOCOL_NT1
) {
4160 const char *client_signing
= NULL
;
4161 bool server_mandatory
= false;
4162 bool server_allowed
= false;
4163 const char *server_signing
= NULL
;
4168 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4173 server_security_mode
= CVAL(vwv
+ 1, 0);
4174 server_max_mux
= SVAL(vwv
+ 1, 1);
4175 server_max_xmit
= IVAL(vwv
+ 3, 1);
4176 server_session_key
= IVAL(vwv
+ 7, 1);
4177 server_time_zone
= SVALS(vwv
+ 15, 1);
4178 server_time_zone
*= 60;
4179 /* this time arrives in real GMT */
4180 server_system_time
= BVAL(vwv
+ 11, 1);
4181 server_capabilities
= IVAL(vwv
+ 9, 1);
4183 key_len
= CVAL(vwv
+ 16, 1);
4185 if (server_capabilities
& CAP_RAW_MODE
) {
4186 server_readbraw
= true;
4187 server_writebraw
= true;
4189 if (server_capabilities
& CAP_LOCK_AND_READ
) {
4190 server_lockread
= true;
4193 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
4194 DATA_BLOB blob1
, blob2
;
4196 if (num_bytes
< 16) {
4197 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4201 blob1
= data_blob_const(bytes
, 16);
4202 status
= GUID_from_data_blob(&blob1
, &server_guid
);
4203 if (tevent_req_nterror(req
, status
)) {
4207 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
4208 blob2
= data_blob_dup_talloc(state
, blob1
);
4209 if (blob1
.length
> 0 &&
4210 tevent_req_nomem(blob2
.data
, req
)) {
4213 server_gss_blob
= blob2
;
4215 DATA_BLOB blob1
, blob2
;
4217 if (num_bytes
< key_len
) {
4218 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4222 if (key_len
!= 0 && key_len
!= 8) {
4223 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4228 memcpy(server_challenge
, bytes
, 8);
4231 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4232 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4233 if (blob1
.length
> 0) {
4236 len
= utf16_len_n(blob1
.data
,
4240 ok
= convert_string_talloc(state
,
4248 status
= map_nt_error_from_unix_common(errno
);
4249 tevent_req_nterror(req
, status
);
4254 blob2
.data
+= blob1
.length
;
4255 blob2
.length
-= blob1
.length
;
4256 if (blob2
.length
> 0) {
4259 len
= utf16_len_n(blob1
.data
,
4263 ok
= convert_string_talloc(state
,
4271 status
= map_nt_error_from_unix_common(errno
);
4272 tevent_req_nterror(req
, status
);
4278 client_signing
= "disabled";
4279 if (conn
->allow_signing
) {
4280 client_signing
= "allowed";
4282 if (conn
->mandatory_signing
) {
4283 client_signing
= "required";
4286 server_signing
= "not supported";
4287 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
4288 server_signing
= "supported";
4289 server_allowed
= true;
4290 } else if (conn
->mandatory_signing
) {
4292 * We have mandatory signing as client
4293 * lets assume the server will look at our
4294 * FLAGS2_SMB_SECURITY_SIGNATURES_REQUIRED
4295 * flag in the session setup
4297 server_signing
= "not announced";
4298 server_allowed
= true;
4300 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
4301 server_signing
= "required";
4302 server_mandatory
= true;
4305 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
4309 DEBUG(1,("cli_negprot: SMB signing is required, "
4310 "but client[%s] and server[%s] mismatch\n",
4311 client_signing
, server_signing
));
4312 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
4316 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
4322 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4326 server_security_mode
= SVAL(vwv
+ 1, 0);
4327 server_max_xmit
= SVAL(vwv
+ 2, 0);
4328 server_max_mux
= SVAL(vwv
+ 3, 0);
4329 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
4330 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
4331 server_session_key
= IVAL(vwv
+ 6, 0);
4332 server_time_zone
= SVALS(vwv
+ 10, 0);
4333 server_time_zone
*= 60;
4334 /* this time is converted to GMT by make_unix_date */
4335 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
4336 unix_to_nt_time(&server_system_time
, t
);
4337 key_len
= SVAL(vwv
+ 11, 0);
4339 if (num_bytes
< key_len
) {
4340 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4344 if (key_len
!= 0 && key_len
!= 8) {
4345 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4350 memcpy(server_challenge
, bytes
, 8);
4353 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4354 if (blob1
.length
> 0) {
4358 len
= utf16_len_n(blob1
.data
,
4362 ok
= convert_string_talloc(state
,
4370 status
= map_nt_error_from_unix_common(errno
);
4371 tevent_req_nterror(req
, status
);
4377 /* the old core protocol */
4378 server_time_zone
= get_time_zone(time(NULL
));
4379 server_max_xmit
= 1024;
4383 if (server_max_xmit
< 1024) {
4384 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4388 if (server_max_mux
< 1) {
4389 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4394 * Now calculate the negotiated capabilities
4395 * based on the mask for:
4396 * - client only flags
4397 * - flags used in both directions
4398 * - server only flags
4400 both_capabilities
= client_capabilities
& server_capabilities
;
4401 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
4402 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
4403 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
4405 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
4407 conn
->smb1
.server
.capabilities
= server_capabilities
;
4408 conn
->smb1
.capabilities
= capabilities
;
4410 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
4411 conn
->smb1
.max_xmit
= max_xmit
;
4413 conn
->smb1
.server
.max_mux
= server_max_mux
;
4415 conn
->smb1
.server
.security_mode
= server_security_mode
;
4417 conn
->smb1
.server
.readbraw
= server_readbraw
;
4418 conn
->smb1
.server
.writebraw
= server_writebraw
;
4419 conn
->smb1
.server
.lockread
= server_lockread
;
4420 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
4422 conn
->smb1
.server
.session_key
= server_session_key
;
4424 talloc_steal(conn
, server_gss_blob
.data
);
4425 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
4426 conn
->smb1
.server
.guid
= server_guid
;
4427 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
4428 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
4429 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
4431 conn
->smb1
.server
.time_zone
= server_time_zone
;
4432 conn
->smb1
.server
.system_time
= server_system_time
;
4434 tevent_req_done(req
);
4437 static size_t smbXcli_padding_helper(uint32_t offset
, size_t n
)
4439 if ((offset
& (n
-1)) == 0) return 0;
4440 return n
- (offset
& (n
-1));
4443 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
4447 uint16_t dialect_count
= 0;
4448 DATA_BLOB dyn
= data_blob_null
;
4450 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4454 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4458 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4462 SSVAL(val
, 0, smb2cli_prots
[i
].smb2_dialect
);
4464 ok
= data_blob_append(state
, &dyn
, val
, sizeof(val
));
4472 buf
= state
->smb2
.fixed
;
4474 SSVAL(buf
, 2, dialect_count
);
4475 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
4476 SSVAL(buf
, 6, 0); /* Reserved */
4477 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_22
) {
4478 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
4480 SIVAL(buf
, 8, 0); /* Capabilities */
4482 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_10
) {
4486 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
4488 if (!NT_STATUS_IS_OK(status
)) {
4491 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
4493 memset(buf
+12, 0, 16); /* ClientGuid */
4496 if (state
->conn
->max_protocol
>= PROTOCOL_SMB3_10
) {
4498 struct smb2_negotiate_contexts c
= { .num_contexts
= 0, };
4502 const uint8_t zeros
[8] = {0, };
4506 SSVAL(p
, 0, 1); /* HashAlgorithmCount */
4507 SSVAL(p
, 2, 32); /* SaltLength */
4508 SSVAL(p
, 4, SMB2_PREAUTH_INTEGRITY_SHA512
);
4509 generate_random_buffer(p
+ 6, 32);
4511 b
= data_blob_const(p
, 38);
4512 status
= smb2_negotiate_context_add(state
, &c
,
4513 SMB2_PREAUTH_INTEGRITY_CAPABILITIES
, b
);
4514 if (!NT_STATUS_IS_OK(status
)) {
4518 SSVAL(p
, 0, 2); /* ChiperCount */
4519 SSVAL(p
, 2, SMB2_ENCRYPTION_AES128_GCM
);
4520 SSVAL(p
, 4, SMB2_ENCRYPTION_AES128_CCM
);
4522 b
= data_blob_const(p
, 6);
4523 status
= smb2_negotiate_context_add(state
, &c
,
4524 SMB2_ENCRYPTION_CAPABILITIES
, b
);
4525 if (!NT_STATUS_IS_OK(status
)) {
4529 status
= smb2_negotiate_context_push(state
, &b
, c
);
4530 if (!NT_STATUS_IS_OK(status
)) {
4534 offset
= SMB2_HDR_BODY
+ sizeof(state
->smb2
.fixed
) + dyn
.length
;
4535 pad
= smbXcli_padding_helper(offset
, 8);
4537 ok
= data_blob_append(state
, &dyn
, zeros
, pad
);
4543 ok
= data_blob_append(state
, &dyn
, b
.data
, b
.length
);
4548 SIVAL(buf
, 28, offset
); /* NegotiateContextOffset */
4549 SSVAL(buf
, 32, c
.num_contexts
); /* NegotiateContextCount */
4550 SSVAL(buf
, 34, 0); /* Reserved */
4552 SBVAL(buf
, 28, 0); /* Reserved/ClientStartTime */
4555 return smb2cli_req_send(state
, state
->ev
,
4556 state
->conn
, SMB2_OP_NEGPROT
,
4558 state
->timeout_msec
,
4559 NULL
, NULL
, /* tcon, session */
4560 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
4561 dyn
.data
, dyn
.length
,
4562 UINT16_MAX
); /* max_dyn_len */
4565 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
4567 struct tevent_req
*req
=
4568 tevent_req_callback_data(subreq
,
4570 struct smbXcli_negprot_state
*state
=
4571 tevent_req_data(req
,
4572 struct smbXcli_negprot_state
);
4573 struct smbXcli_conn
*conn
= state
->conn
;
4574 size_t security_offset
, security_length
;
4580 uint16_t dialect_revision
;
4581 struct smb2_negotiate_contexts c
= { .num_contexts
= 0, };
4582 uint32_t negotiate_context_offset
= 0;
4583 uint16_t negotiate_context_count
= 0;
4584 DATA_BLOB negotiate_context_blob
= data_blob_null
;
4588 struct smb2_negotiate_context
*preauth
= NULL
;
4589 uint16_t hash_count
;
4590 uint16_t salt_length
;
4591 uint16_t hash_selected
;
4592 struct hc_sha512state sctx
;
4593 struct smb2_negotiate_context
*cipher
= NULL
;
4594 struct iovec sent_iov
[3];
4595 static const struct smb2cli_req_expected_response expected
[] = {
4597 .status
= NT_STATUS_OK
,
4602 status
= smb2cli_req_recv(subreq
, state
, &iov
,
4603 expected
, ARRAY_SIZE(expected
));
4604 if (tevent_req_nterror(req
, status
)) {
4608 body
= (uint8_t *)iov
[1].iov_base
;
4610 dialect_revision
= SVAL(body
, 4);
4612 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4613 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4617 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4621 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4625 conn
->protocol
= smb2cli_prots
[i
].proto
;
4629 if (conn
->protocol
== PROTOCOL_NONE
) {
4630 TALLOC_FREE(subreq
);
4632 if (state
->conn
->min_protocol
>= PROTOCOL_SMB2_02
) {
4633 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4637 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4638 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4642 /* make sure we do not loop forever */
4643 state
->conn
->min_protocol
= PROTOCOL_SMB2_02
;
4646 * send a SMB2 negprot, in order to negotiate
4649 subreq
= smbXcli_negprot_smb2_subreq(state
);
4650 if (tevent_req_nomem(subreq
, req
)) {
4653 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4657 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4658 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
4659 negotiate_context_count
= SVAL(body
, 6);
4662 blob
= data_blob_const(body
+ 8, 16);
4663 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4664 if (tevent_req_nterror(req
, status
)) {
4668 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4669 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4670 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4671 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4672 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4673 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4675 security_offset
= SVAL(body
, 56);
4676 security_length
= SVAL(body
, 58);
4678 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4679 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4683 if (security_length
> iov
[2].iov_len
) {
4684 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4688 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4691 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4695 if (conn
->protocol
< PROTOCOL_SMB3_10
) {
4696 TALLOC_FREE(subreq
);
4698 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
) {
4699 conn
->smb2
.server
.cipher
= SMB2_ENCRYPTION_AES128_CCM
;
4701 tevent_req_done(req
);
4705 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
) {
4706 tevent_req_nterror(req
,
4707 NT_STATUS_INVALID_NETWORK_RESPONSE
);
4711 negotiate_context_offset
= IVAL(body
, 60);
4712 if (negotiate_context_offset
< security_offset
) {
4713 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4717 ctx_ofs
= negotiate_context_offset
- security_offset
;
4718 if (ctx_ofs
> iov
[2].iov_len
) {
4719 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4722 avail
= iov
[2].iov_len
- security_length
;
4723 needed
= iov
[2].iov_len
- ctx_ofs
;
4724 if (needed
> avail
) {
4725 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4729 negotiate_context_blob
.data
= (uint8_t *)iov
[2].iov_base
;
4730 negotiate_context_blob
.length
= iov
[2].iov_len
;
4732 negotiate_context_blob
.data
+= ctx_ofs
;
4733 negotiate_context_blob
.length
-= ctx_ofs
;
4735 status
= smb2_negotiate_context_parse(state
, negotiate_context_blob
, &c
);
4736 if (tevent_req_nterror(req
, status
)) {
4740 if (negotiate_context_count
!= c
.num_contexts
) {
4741 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4745 preauth
= smb2_negotiate_context_find(&c
,
4746 SMB2_PREAUTH_INTEGRITY_CAPABILITIES
);
4747 if (preauth
== NULL
) {
4748 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4752 if (preauth
->data
.length
< 6) {
4753 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4757 hash_count
= SVAL(preauth
->data
.data
, 0);
4758 salt_length
= SVAL(preauth
->data
.data
, 2);
4759 hash_selected
= SVAL(preauth
->data
.data
, 4);
4761 if (hash_count
!= 1) {
4762 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4766 if (preauth
->data
.length
!= (6 + salt_length
)) {
4767 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4771 if (hash_selected
!= SMB2_PREAUTH_INTEGRITY_SHA512
) {
4772 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4776 cipher
= smb2_negotiate_context_find(&c
, SMB2_ENCRYPTION_CAPABILITIES
);
4777 if (cipher
!= NULL
) {
4778 uint16_t cipher_count
;
4780 if (cipher
->data
.length
< 2) {
4781 tevent_req_nterror(req
,
4782 NT_STATUS_INVALID_NETWORK_RESPONSE
);
4786 cipher_count
= SVAL(cipher
->data
.data
, 0);
4788 if (cipher_count
> 1) {
4789 tevent_req_nterror(req
,
4790 NT_STATUS_INVALID_NETWORK_RESPONSE
);
4794 if (cipher
->data
.length
!= (2 + 2 * cipher_count
)) {
4795 tevent_req_nterror(req
,
4796 NT_STATUS_INVALID_NETWORK_RESPONSE
);
4800 if (cipher_count
== 1) {
4801 uint16_t cipher_selected
;
4803 cipher_selected
= SVAL(cipher
->data
.data
, 2);
4805 switch (cipher_selected
) {
4806 case SMB2_ENCRYPTION_AES128_GCM
:
4807 case SMB2_ENCRYPTION_AES128_CCM
:
4808 conn
->smb2
.server
.cipher
= cipher_selected
;
4814 /* First we hash the request */
4815 smb2cli_req_get_sent_iov(subreq
, sent_iov
);
4816 samba_SHA512_Init(&sctx
);
4817 samba_SHA512_Update(&sctx
, conn
->smb2
.preauth_sha512
,
4818 sizeof(conn
->smb2
.preauth_sha512
));
4819 for (i
= 0; i
< 3; i
++) {
4820 samba_SHA512_Update(&sctx
, sent_iov
[i
].iov_base
, sent_iov
[i
].iov_len
);
4822 samba_SHA512_Final(conn
->smb2
.preauth_sha512
, &sctx
);
4823 TALLOC_FREE(subreq
);
4825 /* And now we hash the response */
4826 samba_SHA512_Init(&sctx
);
4827 samba_SHA512_Update(&sctx
, conn
->smb2
.preauth_sha512
,
4828 sizeof(conn
->smb2
.preauth_sha512
));
4829 for (i
= 0; i
< 3; i
++) {
4830 samba_SHA512_Update(&sctx
, iov
[i
].iov_base
, iov
[i
].iov_len
);
4832 samba_SHA512_Final(conn
->smb2
.preauth_sha512
, &sctx
);
4834 tevent_req_done(req
);
4837 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4838 TALLOC_CTX
*tmp_mem
,
4841 size_t num_pending
= talloc_array_length(conn
->pending
);
4842 struct tevent_req
*subreq
;
4843 struct smbXcli_req_state
*substate
;
4844 struct tevent_req
*req
;
4845 uint32_t protocol_magic
;
4846 size_t inbuf_len
= smb_len_nbt(inbuf
);
4848 if (num_pending
!= 1) {
4849 return NT_STATUS_INTERNAL_ERROR
;
4852 if (inbuf_len
< 4) {
4853 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4856 subreq
= conn
->pending
[0];
4857 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4858 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4860 protocol_magic
= IVAL(inbuf
, 4);
4862 switch (protocol_magic
) {
4864 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4865 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4866 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4869 if (substate
->smb2
.recv_iov
== NULL
) {
4871 * For the SMB1 negprot we have move it.
4873 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4874 substate
->smb1
.recv_iov
= NULL
;
4878 * we got an SMB2 answer, which consumed sequence number 0
4879 * so we need to use 1 as the next one.
4881 * we also need to set the current credits to 0
4882 * as we consumed the initial one. The SMB2 answer
4883 * hopefully grant us a new credit.
4886 conn
->smb2
.cur_credits
= 0;
4887 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4888 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4889 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4892 DEBUG(10, ("Got non-SMB PDU\n"));
4893 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4896 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4898 return tevent_req_simple_recv_ntstatus(req
);
4901 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4902 uint32_t timeout_msec
,
4903 enum protocol_types min_protocol
,
4904 enum protocol_types max_protocol
)
4906 TALLOC_CTX
*frame
= talloc_stackframe();
4907 struct tevent_context
*ev
;
4908 struct tevent_req
*req
;
4909 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4912 if (smbXcli_conn_has_async_calls(conn
)) {
4914 * Can't use sync call while an async call is in flight
4916 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4919 ev
= samba_tevent_context_init(frame
);
4923 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4924 min_protocol
, max_protocol
);
4928 ok
= tevent_req_poll_ntstatus(req
, ev
, &status
);
4932 status
= smbXcli_negprot_recv(req
);
4938 struct smb2cli_validate_negotiate_info_state
{
4939 struct smbXcli_conn
*conn
;
4940 DATA_BLOB in_input_buffer
;
4941 DATA_BLOB in_output_buffer
;
4942 DATA_BLOB out_input_buffer
;
4943 DATA_BLOB out_output_buffer
;
4947 static void smb2cli_validate_negotiate_info_done(struct tevent_req
*subreq
);
4949 struct tevent_req
*smb2cli_validate_negotiate_info_send(TALLOC_CTX
*mem_ctx
,
4950 struct tevent_context
*ev
,
4951 struct smbXcli_conn
*conn
,
4952 uint32_t timeout_msec
,
4953 struct smbXcli_session
*session
,
4954 struct smbXcli_tcon
*tcon
)
4956 struct tevent_req
*req
;
4957 struct smb2cli_validate_negotiate_info_state
*state
;
4959 uint16_t dialect_count
= 0;
4960 struct tevent_req
*subreq
;
4961 bool _save_should_sign
;
4964 req
= tevent_req_create(mem_ctx
, &state
,
4965 struct smb2cli_validate_negotiate_info_state
);
4971 state
->in_input_buffer
= data_blob_talloc_zero(state
,
4972 4 + 16 + 1 + 1 + 2);
4973 if (tevent_req_nomem(state
->in_input_buffer
.data
, req
)) {
4974 return tevent_req_post(req
, ev
);
4976 buf
= state
->in_input_buffer
.data
;
4978 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_22
) {
4979 SIVAL(buf
, 0, conn
->smb2
.client
.capabilities
);
4981 SIVAL(buf
, 0, 0); /* Capabilities */
4983 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_10
) {
4987 status
= GUID_to_ndr_blob(&conn
->smb2
.client
.guid
,
4989 if (!NT_STATUS_IS_OK(status
)) {
4992 memcpy(buf
+4, blob
.data
, 16); /* ClientGuid */
4994 memset(buf
+4, 0, 16); /* ClientGuid */
4996 if (state
->conn
->min_protocol
>= PROTOCOL_SMB2_02
) {
4997 SCVAL(buf
, 20, conn
->smb2
.client
.security_mode
);
5001 SCVAL(buf
, 21, 0); /* reserved */
5003 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
5007 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
5011 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
5015 if (smb2cli_prots
[i
].proto
== state
->conn
->protocol
) {
5016 state
->dialect
= smb2cli_prots
[i
].smb2_dialect
;
5019 ofs
= state
->in_input_buffer
.length
;
5020 ok
= data_blob_realloc(state
, &state
->in_input_buffer
,
5023 tevent_req_oom(req
);
5024 return tevent_req_post(req
, ev
);
5027 buf
= state
->in_input_buffer
.data
;
5028 SSVAL(buf
, ofs
, smb2cli_prots
[i
].smb2_dialect
);
5032 buf
= state
->in_input_buffer
.data
;
5033 SSVAL(buf
, 22, dialect_count
);
5035 _save_should_sign
= smb2cli_tcon_is_signing_on(tcon
);
5036 smb2cli_tcon_should_sign(tcon
, true);
5037 subreq
= smb2cli_ioctl_send(state
, ev
, conn
,
5038 timeout_msec
, session
, tcon
,
5039 UINT64_MAX
, /* in_fid_persistent */
5040 UINT64_MAX
, /* in_fid_volatile */
5041 FSCTL_VALIDATE_NEGOTIATE_INFO
,
5042 0, /* in_max_input_length */
5043 &state
->in_input_buffer
,
5044 24, /* in_max_output_length */
5045 &state
->in_output_buffer
,
5046 SMB2_IOCTL_FLAG_IS_FSCTL
);
5047 smb2cli_tcon_should_sign(tcon
, _save_should_sign
);
5048 if (tevent_req_nomem(subreq
, req
)) {
5049 return tevent_req_post(req
, ev
);
5051 tevent_req_set_callback(subreq
,
5052 smb2cli_validate_negotiate_info_done
,
5058 static void smb2cli_validate_negotiate_info_done(struct tevent_req
*subreq
)
5060 struct tevent_req
*req
=
5061 tevent_req_callback_data(subreq
,
5063 struct smb2cli_validate_negotiate_info_state
*state
=
5064 tevent_req_data(req
,
5065 struct smb2cli_validate_negotiate_info_state
);
5068 uint32_t capabilities
;
5069 DATA_BLOB guid_blob
;
5070 struct GUID server_guid
;
5071 uint16_t security_mode
;
5074 status
= smb2cli_ioctl_recv(subreq
, state
,
5075 &state
->out_input_buffer
,
5076 &state
->out_output_buffer
);
5077 TALLOC_FREE(subreq
);
5078 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
)) {
5080 * The response was signed, but not supported
5082 * Older Windows and Samba releases return
5083 * NT_STATUS_FILE_CLOSED.
5085 tevent_req_done(req
);
5088 if (NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_DEVICE_REQUEST
)) {
5090 * The response was signed, but not supported
5092 * This is returned by the NTVFS based Samba 4.x file server
5095 tevent_req_done(req
);
5098 if (NT_STATUS_EQUAL(status
, NT_STATUS_FS_DRIVER_REQUIRED
)) {
5100 * The response was signed, but not supported
5102 * This is returned by the NTVFS based Samba 4.x file server
5105 tevent_req_done(req
);
5108 if (tevent_req_nterror(req
, status
)) {
5112 if (state
->out_output_buffer
.length
!= 24) {
5113 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5117 buf
= state
->out_output_buffer
.data
;
5119 capabilities
= IVAL(buf
, 0);
5120 guid_blob
= data_blob_const(buf
+ 4, 16);
5121 status
= GUID_from_data_blob(&guid_blob
, &server_guid
);
5122 if (tevent_req_nterror(req
, status
)) {
5125 security_mode
= CVAL(buf
, 20);
5126 dialect
= SVAL(buf
, 22);
5128 if (capabilities
!= state
->conn
->smb2
.server
.capabilities
) {
5129 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5133 if (!GUID_equal(&server_guid
, &state
->conn
->smb2
.server
.guid
)) {
5134 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5138 if (security_mode
!= state
->conn
->smb2
.server
.security_mode
) {
5139 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5143 if (dialect
!= state
->dialect
) {
5144 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5148 tevent_req_done(req
);
5151 NTSTATUS
smb2cli_validate_negotiate_info_recv(struct tevent_req
*req
)
5153 return tevent_req_simple_recv_ntstatus(req
);
5156 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
5158 if (session
->conn
== NULL
) {
5162 DLIST_REMOVE(session
->conn
->sessions
, session
);
5166 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
5167 struct smbXcli_conn
*conn
)
5169 struct smbXcli_session
*session
;
5171 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
5172 if (session
== NULL
) {
5175 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
5176 if (session
->smb2
== NULL
) {
5177 talloc_free(session
);
5180 talloc_set_destructor(session
, smbXcli_session_destructor
);
5182 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
5183 session
->conn
= conn
;
5185 memcpy(session
->smb2_channel
.preauth_sha512
,
5186 conn
->smb2
.preauth_sha512
,
5187 sizeof(session
->smb2_channel
.preauth_sha512
));
5192 struct smbXcli_session
*smbXcli_session_copy(TALLOC_CTX
*mem_ctx
,
5193 struct smbXcli_session
*src
)
5195 struct smbXcli_session
*session
;
5197 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
5198 if (session
== NULL
) {
5201 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
5202 if (session
->smb2
== NULL
) {
5203 talloc_free(session
);
5207 session
->conn
= src
->conn
;
5208 *session
->smb2
= *src
->smb2
;
5209 session
->smb2_channel
= src
->smb2_channel
;
5210 session
->disconnect_expired
= src
->disconnect_expired
;
5212 DLIST_ADD_END(src
->conn
->sessions
, session
, struct smbXcli_session
*);
5213 talloc_set_destructor(session
, smbXcli_session_destructor
);
5218 bool smbXcli_session_is_authenticated(struct smbXcli_session
*session
)
5220 const DATA_BLOB
*application_key
;
5222 if (session
->conn
== NULL
) {
5227 * If we have an application key we had a session key negotiated
5230 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
5231 application_key
= &session
->smb2
->application_key
;
5233 application_key
= &session
->smb1
.application_key
;
5236 if (application_key
->length
== 0) {
5243 NTSTATUS
smbXcli_session_application_key(struct smbXcli_session
*session
,
5244 TALLOC_CTX
*mem_ctx
,
5247 const DATA_BLOB
*application_key
;
5249 *key
= data_blob_null
;
5251 if (session
->conn
== NULL
) {
5252 return NT_STATUS_NO_USER_SESSION_KEY
;
5255 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
5256 application_key
= &session
->smb2
->application_key
;
5258 application_key
= &session
->smb1
.application_key
;
5261 if (application_key
->length
== 0) {
5262 return NT_STATUS_NO_USER_SESSION_KEY
;
5265 *key
= data_blob_dup_talloc(mem_ctx
, *application_key
);
5266 if (key
->data
== NULL
) {
5267 return NT_STATUS_NO_MEMORY
;
5270 return NT_STATUS_OK
;
5273 void smbXcli_session_set_disconnect_expired(struct smbXcli_session
*session
)
5275 session
->disconnect_expired
= true;
5278 uint16_t smb1cli_session_current_id(struct smbXcli_session
*session
)
5280 return session
->smb1
.session_id
;
5283 void smb1cli_session_set_id(struct smbXcli_session
*session
,
5284 uint16_t session_id
)
5286 session
->smb1
.session_id
= session_id
;
5289 NTSTATUS
smb1cli_session_set_session_key(struct smbXcli_session
*session
,
5290 const DATA_BLOB _session_key
)
5292 struct smbXcli_conn
*conn
= session
->conn
;
5293 uint8_t session_key
[16];
5296 return NT_STATUS_INVALID_PARAMETER_MIX
;
5299 if (session
->smb1
.application_key
.length
!= 0) {
5301 * TODO: do not allow this...
5303 * return NT_STATUS_INVALID_PARAMETER_MIX;
5305 data_blob_clear_free(&session
->smb1
.application_key
);
5306 session
->smb1
.protected_key
= false;
5309 if (_session_key
.length
== 0) {
5310 return NT_STATUS_OK
;
5313 ZERO_STRUCT(session_key
);
5314 memcpy(session_key
, _session_key
.data
,
5315 MIN(_session_key
.length
, sizeof(session_key
)));
5317 session
->smb1
.application_key
= data_blob_talloc(session
,
5319 sizeof(session_key
));
5320 ZERO_STRUCT(session_key
);
5321 if (session
->smb1
.application_key
.data
== NULL
) {
5322 return NT_STATUS_NO_MEMORY
;
5325 session
->smb1
.protected_key
= false;
5327 return NT_STATUS_OK
;
5330 NTSTATUS
smb1cli_session_protect_session_key(struct smbXcli_session
*session
)
5332 if (session
->smb1
.protected_key
) {
5333 /* already protected */
5334 return NT_STATUS_OK
;
5337 if (session
->smb1
.application_key
.length
!= 16) {
5338 return NT_STATUS_INVALID_PARAMETER_MIX
;
5341 smb_key_derivation(session
->smb1
.application_key
.data
,
5342 session
->smb1
.application_key
.length
,
5343 session
->smb1
.application_key
.data
);
5345 session
->smb1
.protected_key
= true;
5347 return NT_STATUS_OK
;
5350 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
5352 struct smbXcli_conn
*conn
= session
->conn
;
5353 uint8_t security_mode
= 0;
5356 return security_mode
;
5359 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
5360 if (conn
->mandatory_signing
) {
5361 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
5364 return security_mode
;
5367 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
5369 return session
->smb2
->session_id
;
5372 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
5374 return session
->smb2
->session_flags
;
5377 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
5378 uint64_t session_id
,
5379 uint16_t session_flags
)
5381 session
->smb2
->session_id
= session_id
;
5382 session
->smb2
->session_flags
= session_flags
;
5385 void smb2cli_session_increment_channel_sequence(struct smbXcli_session
*session
)
5387 session
->smb2
->channel_sequence
+= 1;
5390 uint16_t smb2cli_session_reset_channel_sequence(struct smbXcli_session
*session
,
5391 uint16_t channel_sequence
)
5395 prev_cs
= session
->smb2
->channel_sequence
;
5396 session
->smb2
->channel_sequence
= channel_sequence
;
5401 void smb2cli_session_start_replay(struct smbXcli_session
*session
)
5403 session
->smb2
->replay_active
= true;
5406 void smb2cli_session_stop_replay(struct smbXcli_session
*session
)
5408 session
->smb2
->replay_active
= false;
5411 NTSTATUS
smb2cli_session_update_preauth(struct smbXcli_session
*session
,
5412 const struct iovec
*iov
)
5414 struct hc_sha512state sctx
;
5417 if (session
->conn
== NULL
) {
5418 return NT_STATUS_INTERNAL_ERROR
;
5421 if (session
->conn
->protocol
< PROTOCOL_SMB3_10
) {
5422 return NT_STATUS_OK
;
5425 if (session
->smb2_channel
.signing_key
.length
!= 0) {
5426 return NT_STATUS_OK
;
5429 samba_SHA512_Init(&sctx
);
5430 samba_SHA512_Update(&sctx
, session
->smb2_channel
.preauth_sha512
,
5431 sizeof(session
->smb2_channel
.preauth_sha512
));
5432 for (i
= 0; i
< 3; i
++) {
5433 samba_SHA512_Update(&sctx
, iov
[i
].iov_base
, iov
[i
].iov_len
);
5435 samba_SHA512_Final(session
->smb2_channel
.preauth_sha512
, &sctx
);
5437 return NT_STATUS_OK
;
5440 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
5441 const DATA_BLOB _session_key
,
5442 const struct iovec
*recv_iov
)
5444 struct smbXcli_conn
*conn
= session
->conn
;
5445 uint16_t no_sign_flags
;
5446 uint8_t session_key
[16];
5447 bool check_signature
= true;
5450 struct _derivation
{
5455 struct _derivation signing
;
5456 struct _derivation encryption
;
5457 struct _derivation decryption
;
5458 struct _derivation application
;
5462 return NT_STATUS_INVALID_PARAMETER_MIX
;
5465 if (recv_iov
[0].iov_len
!= SMB2_HDR_BODY
) {
5466 return NT_STATUS_INVALID_PARAMETER_MIX
;
5469 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
5471 if (session
->smb2
->session_flags
& no_sign_flags
) {
5472 session
->smb2
->should_sign
= false;
5473 return NT_STATUS_OK
;
5476 if (session
->smb2
->signing_key
.length
!= 0) {
5477 return NT_STATUS_INVALID_PARAMETER_MIX
;
5480 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
5481 struct _derivation
*d
;
5484 p
= data_blob_const(session
->smb2_channel
.preauth_sha512
,
5485 sizeof(session
->smb2_channel
.preauth_sha512
));
5487 d
= &derivation
.signing
;
5488 d
->label
= data_blob_string_const_null("SMBSigningKey");
5491 d
= &derivation
.encryption
;
5492 d
->label
= data_blob_string_const_null("SMBC2SCipherKey");
5495 d
= &derivation
.decryption
;
5496 d
->label
= data_blob_string_const_null("SMBS2CCipherKey");
5499 d
= &derivation
.application
;
5500 d
->label
= data_blob_string_const_null("SMBAppKey");
5503 } else if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5504 struct _derivation
*d
;
5506 d
= &derivation
.signing
;
5507 d
->label
= data_blob_string_const_null("SMB2AESCMAC");
5508 d
->context
= data_blob_string_const_null("SmbSign");
5510 d
= &derivation
.encryption
;
5511 d
->label
= data_blob_string_const_null("SMB2AESCCM");
5512 d
->context
= data_blob_string_const_null("ServerIn ");
5514 d
= &derivation
.decryption
;
5515 d
->label
= data_blob_string_const_null("SMB2AESCCM");
5516 d
->context
= data_blob_string_const_null("ServerOut");
5518 d
= &derivation
.application
;
5519 d
->label
= data_blob_string_const_null("SMB2APP");
5520 d
->context
= data_blob_string_const_null("SmbRpc");
5523 ZERO_STRUCT(session_key
);
5524 memcpy(session_key
, _session_key
.data
,
5525 MIN(_session_key
.length
, sizeof(session_key
)));
5527 session
->smb2
->signing_key
= data_blob_talloc(session
,
5529 sizeof(session_key
));
5530 if (session
->smb2
->signing_key
.data
== NULL
) {
5531 ZERO_STRUCT(session_key
);
5532 return NT_STATUS_NO_MEMORY
;
5535 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5536 struct _derivation
*d
= &derivation
.signing
;
5538 smb2_key_derivation(session_key
, sizeof(session_key
),
5539 d
->label
.data
, d
->label
.length
,
5540 d
->context
.data
, d
->context
.length
,
5541 session
->smb2
->signing_key
.data
);
5544 session
->smb2
->encryption_key
= data_blob_dup_talloc(session
,
5545 session
->smb2
->signing_key
);
5546 if (session
->smb2
->encryption_key
.data
== NULL
) {
5547 ZERO_STRUCT(session_key
);
5548 return NT_STATUS_NO_MEMORY
;
5551 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5552 struct _derivation
*d
= &derivation
.encryption
;
5554 smb2_key_derivation(session_key
, sizeof(session_key
),
5555 d
->label
.data
, d
->label
.length
,
5556 d
->context
.data
, d
->context
.length
,
5557 session
->smb2
->encryption_key
.data
);
5560 session
->smb2
->decryption_key
= data_blob_dup_talloc(session
,
5561 session
->smb2
->signing_key
);
5562 if (session
->smb2
->decryption_key
.data
== NULL
) {
5563 ZERO_STRUCT(session_key
);
5564 return NT_STATUS_NO_MEMORY
;
5567 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5568 struct _derivation
*d
= &derivation
.decryption
;
5570 smb2_key_derivation(session_key
, sizeof(session_key
),
5571 d
->label
.data
, d
->label
.length
,
5572 d
->context
.data
, d
->context
.length
,
5573 session
->smb2
->decryption_key
.data
);
5576 session
->smb2
->application_key
= data_blob_dup_talloc(session
,
5577 session
->smb2
->signing_key
);
5578 if (session
->smb2
->application_key
.data
== NULL
) {
5579 ZERO_STRUCT(session_key
);
5580 return NT_STATUS_NO_MEMORY
;
5583 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5584 struct _derivation
*d
= &derivation
.application
;
5586 smb2_key_derivation(session_key
, sizeof(session_key
),
5587 d
->label
.data
, d
->label
.length
,
5588 d
->context
.data
, d
->context
.length
,
5589 session
->smb2
->application_key
.data
);
5591 ZERO_STRUCT(session_key
);
5593 session
->smb2_channel
.signing_key
= data_blob_dup_talloc(session
,
5594 session
->smb2
->signing_key
);
5595 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
5596 return NT_STATUS_NO_MEMORY
;
5599 check_signature
= conn
->mandatory_signing
;
5601 hdr_flags
= IVAL(recv_iov
[0].iov_base
, SMB2_HDR_FLAGS
);
5602 if (hdr_flags
& SMB2_HDR_FLAG_SIGNED
) {
5604 * Sadly some vendors don't sign the
5605 * final SMB2 session setup response
5607 * At least Windows and Samba are always doing this
5608 * if there's a session key available.
5610 * We only check the signature if it's mandatory
5611 * or SMB2_HDR_FLAG_SIGNED is provided.
5613 check_signature
= true;
5616 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
5617 check_signature
= true;
5620 if (check_signature
) {
5621 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
5622 session
->conn
->protocol
,
5624 if (!NT_STATUS_IS_OK(status
)) {
5629 session
->smb2
->should_sign
= false;
5630 session
->smb2
->should_encrypt
= false;
5632 if (conn
->desire_signing
) {
5633 session
->smb2
->should_sign
= true;
5636 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
5637 session
->smb2
->should_sign
= true;
5640 if (session
->smb2
->session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
5641 session
->smb2
->should_encrypt
= true;
5644 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
5645 session
->smb2
->should_encrypt
= false;
5648 if (conn
->smb2
.server
.cipher
== 0) {
5649 session
->smb2
->should_encrypt
= false;
5652 generate_random_buffer((uint8_t *)&session
->smb2
->nonce_high
,
5653 sizeof(session
->smb2
->nonce_high
));
5654 session
->smb2
->nonce_low
= 1;
5656 return NT_STATUS_OK
;
5659 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
5660 struct smbXcli_session
*session1
,
5661 struct smbXcli_conn
*conn
,
5662 struct smbXcli_session
**_session2
)
5664 struct smbXcli_session
*session2
;
5666 if (session1
->smb2
->signing_key
.length
== 0) {
5667 return NT_STATUS_INVALID_PARAMETER_MIX
;
5671 return NT_STATUS_INVALID_PARAMETER_MIX
;
5674 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
5675 if (session2
== NULL
) {
5676 return NT_STATUS_NO_MEMORY
;
5678 session2
->smb2
= talloc_reference(session2
, session1
->smb2
);
5679 if (session2
->smb2
== NULL
) {
5680 talloc_free(session2
);
5681 return NT_STATUS_NO_MEMORY
;
5684 talloc_set_destructor(session2
, smbXcli_session_destructor
);
5685 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
5686 session2
->conn
= conn
;
5688 memcpy(session2
->smb2_channel
.preauth_sha512
,
5689 conn
->smb2
.preauth_sha512
,
5690 sizeof(session2
->smb2_channel
.preauth_sha512
));
5692 *_session2
= session2
;
5693 return NT_STATUS_OK
;
5696 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
5697 const DATA_BLOB _channel_key
,
5698 const struct iovec
*recv_iov
)
5700 struct smbXcli_conn
*conn
= session
->conn
;
5701 uint8_t channel_key
[16];
5703 struct _derivation
{
5708 struct _derivation signing
;
5712 return NT_STATUS_INVALID_PARAMETER_MIX
;
5715 if (session
->smb2_channel
.signing_key
.length
!= 0) {
5716 return NT_STATUS_INVALID_PARAMETER_MIX
;
5719 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
5720 struct _derivation
*d
;
5723 p
= data_blob_const(session
->smb2_channel
.preauth_sha512
,
5724 sizeof(session
->smb2_channel
.preauth_sha512
));
5726 d
= &derivation
.signing
;
5727 d
->label
= data_blob_string_const_null("SMBSigningKey");
5729 } else if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5730 struct _derivation
*d
;
5732 d
= &derivation
.signing
;
5733 d
->label
= data_blob_string_const_null("SMB2AESCMAC");
5734 d
->context
= data_blob_string_const_null("SmbSign");
5737 ZERO_STRUCT(channel_key
);
5738 memcpy(channel_key
, _channel_key
.data
,
5739 MIN(_channel_key
.length
, sizeof(channel_key
)));
5741 session
->smb2_channel
.signing_key
= data_blob_talloc(session
,
5743 sizeof(channel_key
));
5744 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
5745 ZERO_STRUCT(channel_key
);
5746 return NT_STATUS_NO_MEMORY
;
5749 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5750 struct _derivation
*d
= &derivation
.signing
;
5752 smb2_key_derivation(channel_key
, sizeof(channel_key
),
5753 d
->label
.data
, d
->label
.length
,
5754 d
->context
.data
, d
->context
.length
,
5755 session
->smb2_channel
.signing_key
.data
);
5757 ZERO_STRUCT(channel_key
);
5759 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
5760 session
->conn
->protocol
,
5762 if (!NT_STATUS_IS_OK(status
)) {
5766 return NT_STATUS_OK
;
5769 NTSTATUS
smb2cli_session_encryption_on(struct smbXcli_session
*session
)
5771 if (session
->smb2
->should_encrypt
) {
5772 return NT_STATUS_OK
;
5775 if (session
->conn
->protocol
< PROTOCOL_SMB2_24
) {
5776 return NT_STATUS_NOT_SUPPORTED
;
5779 if (session
->conn
->smb2
.server
.cipher
== 0) {
5780 return NT_STATUS_NOT_SUPPORTED
;
5783 if (session
->smb2
->signing_key
.data
== NULL
) {
5784 return NT_STATUS_NOT_SUPPORTED
;
5786 session
->smb2
->should_encrypt
= true;
5787 return NT_STATUS_OK
;
5790 struct smbXcli_tcon
*smbXcli_tcon_create(TALLOC_CTX
*mem_ctx
)
5792 struct smbXcli_tcon
*tcon
;
5794 tcon
= talloc_zero(mem_ctx
, struct smbXcli_tcon
);
5802 void smbXcli_tcon_set_fs_attributes(struct smbXcli_tcon
*tcon
,
5803 uint32_t fs_attributes
)
5805 tcon
->fs_attributes
= fs_attributes
;
5808 uint32_t smbXcli_tcon_get_fs_attributes(struct smbXcli_tcon
*tcon
)
5810 return tcon
->fs_attributes
;
5813 bool smbXcli_tcon_is_dfs_share(struct smbXcli_tcon
*tcon
)
5819 if (tcon
->is_smb1
) {
5820 if (tcon
->smb1
.optional_support
& SMB_SHARE_IN_DFS
) {
5827 if (tcon
->smb2
.capabilities
& SMB2_SHARE_CAP_DFS
) {
5834 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
5836 return tcon
->smb1
.tcon_id
;
5839 void smb1cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint16_t tcon_id
)
5841 tcon
->is_smb1
= true;
5842 tcon
->smb1
.tcon_id
= tcon_id
;
5845 bool smb1cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
5847 uint16_t optional_support
,
5848 uint32_t maximal_access
,
5849 uint32_t guest_maximal_access
,
5850 const char *service
,
5851 const char *fs_type
)
5853 tcon
->is_smb1
= true;
5854 tcon
->fs_attributes
= 0;
5855 tcon
->smb1
.tcon_id
= tcon_id
;
5856 tcon
->smb1
.optional_support
= optional_support
;
5857 tcon
->smb1
.maximal_access
= maximal_access
;
5858 tcon
->smb1
.guest_maximal_access
= guest_maximal_access
;
5860 TALLOC_FREE(tcon
->smb1
.service
);
5861 tcon
->smb1
.service
= talloc_strdup(tcon
, service
);
5862 if (service
!= NULL
&& tcon
->smb1
.service
== NULL
) {
5866 TALLOC_FREE(tcon
->smb1
.fs_type
);
5867 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, fs_type
);
5868 if (fs_type
!= NULL
&& tcon
->smb1
.fs_type
== NULL
) {
5875 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
5877 return tcon
->smb2
.tcon_id
;
5880 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon
*tcon
)
5882 return tcon
->smb2
.capabilities
;
5885 void smb2cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
5886 struct smbXcli_session
*session
,
5890 uint32_t capabilities
,
5891 uint32_t maximal_access
)
5893 tcon
->is_smb1
= false;
5894 tcon
->fs_attributes
= 0;
5895 tcon
->smb2
.tcon_id
= tcon_id
;
5896 tcon
->smb2
.type
= type
;
5897 tcon
->smb2
.flags
= flags
;
5898 tcon
->smb2
.capabilities
= capabilities
;
5899 tcon
->smb2
.maximal_access
= maximal_access
;
5901 tcon
->smb2
.should_sign
= false;
5902 tcon
->smb2
.should_encrypt
= false;
5904 if (session
== NULL
) {
5908 tcon
->smb2
.should_sign
= session
->smb2
->should_sign
;
5909 tcon
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
5911 if (flags
& SMB2_SHAREFLAG_ENCRYPT_DATA
) {
5912 tcon
->smb2
.should_encrypt
= true;
5916 void smb2cli_tcon_should_sign(struct smbXcli_tcon
*tcon
,
5919 tcon
->smb2
.should_sign
= should_sign
;
5922 bool smb2cli_tcon_is_signing_on(struct smbXcli_tcon
*tcon
)
5924 if (tcon
->smb2
.should_encrypt
) {
5928 return tcon
->smb2
.should_sign
;
5931 void smb2cli_tcon_should_encrypt(struct smbXcli_tcon
*tcon
,
5932 bool should_encrypt
)
5934 tcon
->smb2
.should_encrypt
= should_encrypt
;
5937 bool smb2cli_tcon_is_encryption_on(struct smbXcli_tcon
*tcon
)
5939 return tcon
->smb2
.should_encrypt
;