2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "../libcli/smb/smb_common.h"
29 #include "../libcli/smb/smb_seal.h"
30 #include "../libcli/smb/smb_signing.h"
31 #include "../libcli/smb/read_smb.h"
32 #include "smbXcli_base.h"
33 #include "librpc/ndr/libndr.h"
37 struct smbXcli_session
;
42 struct sockaddr_storage local_ss
;
43 struct sockaddr_storage remote_ss
;
44 const char *remote_name
;
46 struct tevent_queue
*outgoing
;
47 struct tevent_req
**pending
;
48 struct tevent_req
*read_smb_req
;
50 enum protocol_types protocol
;
53 bool mandatory_signing
;
56 * The incoming dispatch function should return:
57 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
58 * - NT_STATUS_OK, if no more processing is desired, e.g.
59 * the dispatch function called
61 * - All other return values disconnect the connection.
63 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
69 uint32_t capabilities
;
74 uint32_t capabilities
;
77 uint16_t security_mode
;
86 const char *workgroup
;
92 uint32_t capabilities
;
97 struct smb_signing_state
*signing
;
98 struct smb_trans_enc_state
*trans_enc
;
100 struct tevent_req
*read_braw_req
;
105 uint32_t capabilities
;
106 uint16_t security_mode
;
111 uint32_t capabilities
;
112 uint16_t security_mode
;
114 uint32_t max_trans_size
;
115 uint32_t max_read_size
;
116 uint32_t max_write_size
;
123 uint16_t cur_credits
;
124 uint16_t max_credits
;
127 struct smbXcli_session
*sessions
;
130 struct smbXcli_session
{
131 struct smbXcli_session
*prev
, *next
;
132 struct smbXcli_conn
*conn
;
136 uint16_t session_flags
;
137 DATA_BLOB application_key
;
138 DATA_BLOB signing_key
;
141 DATA_BLOB encryption_key
;
142 DATA_BLOB decryption_key
;
143 uint64_t channel_nonce
;
144 uint64_t channel_next
;
145 DATA_BLOB channel_signing_key
;
149 struct smbXcli_req_state
{
150 struct tevent_context
*ev
;
151 struct smbXcli_conn
*conn
;
152 struct smbXcli_session
*session
; /* maybe NULL */
154 uint8_t length_hdr
[4];
161 /* Space for the header including the wct */
162 uint8_t hdr
[HDR_VWV
];
165 * For normal requests, smb1cli_req_send chooses a mid.
166 * SecondaryV trans requests need to use the mid of the primary
167 * request, so we need a place to store it.
168 * Assume it is set if != 0.
173 uint8_t bytecount_buf
[2];
175 #define MAX_SMB_IOV 10
176 /* length_hdr, hdr, words, byte_count, buffers */
177 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
182 struct tevent_req
**chained_requests
;
185 NTSTATUS recv_status
;
186 /* always an array of 3 talloc elements */
187 struct iovec
*recv_iov
;
191 const uint8_t *fixed
;
197 uint8_t pad
[7]; /* padding space for compounding */
200 * always an array of 3 talloc elements
201 * (without a SMB2_TRANSFORM header!)
205 struct iovec
*recv_iov
;
207 uint16_t credit_charge
;
209 bool signing_skipped
;
215 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
218 * NT_STATUS_OK, means we do not notify the callers
220 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
222 while (conn
->sessions
) {
223 conn
->sessions
->conn
= NULL
;
224 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
227 if (conn
->smb1
.trans_enc
) {
228 TALLOC_FREE(conn
->smb1
.trans_enc
);
234 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
236 const char *remote_name
,
237 enum smb_signing_setting signing_state
,
238 uint32_t smb1_capabilities
,
239 struct GUID
*client_guid
,
240 uint32_t smb2_capabilities
)
242 struct smbXcli_conn
*conn
= NULL
;
244 struct sockaddr
*sa
= NULL
;
248 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
254 conn
->write_fd
= dup(fd
);
255 if (conn
->write_fd
== -1) {
259 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
260 if (conn
->remote_name
== NULL
) {
265 ss
= (void *)&conn
->local_ss
;
266 sa
= (struct sockaddr
*)ss
;
267 sa_length
= sizeof(conn
->local_ss
);
268 ret
= getsockname(fd
, sa
, &sa_length
);
272 ss
= (void *)&conn
->remote_ss
;
273 sa
= (struct sockaddr
*)ss
;
274 sa_length
= sizeof(conn
->remote_ss
);
275 ret
= getpeername(fd
, sa
, &sa_length
);
280 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
281 if (conn
->outgoing
== NULL
) {
284 conn
->pending
= NULL
;
286 conn
->protocol
= PROTOCOL_NONE
;
288 switch (signing_state
) {
289 case SMB_SIGNING_OFF
:
291 conn
->allow_signing
= false;
292 conn
->desire_signing
= false;
293 conn
->mandatory_signing
= false;
295 case SMB_SIGNING_DEFAULT
:
296 case SMB_SIGNING_IF_REQUIRED
:
297 /* if the server requires it */
298 conn
->allow_signing
= true;
299 conn
->desire_signing
= false;
300 conn
->mandatory_signing
= false;
302 case SMB_SIGNING_REQUIRED
:
304 conn
->allow_signing
= true;
305 conn
->desire_signing
= true;
306 conn
->mandatory_signing
= true;
310 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
311 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
313 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
314 conn
->smb1
.max_xmit
= 1024;
318 /* initialise signing */
319 conn
->smb1
.signing
= smb_signing_init(conn
,
321 conn
->desire_signing
,
322 conn
->mandatory_signing
);
323 if (!conn
->smb1
.signing
) {
327 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
328 if (conn
->mandatory_signing
) {
329 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
332 conn
->smb2
.client
.guid
= *client_guid
;
334 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
336 conn
->smb2
.cur_credits
= 1;
337 conn
->smb2
.max_credits
= 0;
339 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
343 if (conn
->write_fd
!= -1) {
344 close(conn
->write_fd
);
350 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
356 if (conn
->read_fd
== -1) {
363 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
365 return conn
->protocol
;
368 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
370 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
374 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
381 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
383 set_socket_options(conn
->read_fd
, options
);
386 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
388 return &conn
->local_ss
;
391 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
393 return &conn
->remote_ss
;
396 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
398 return conn
->remote_name
;
401 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
403 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
410 return conn
->smb1
.server
.max_mux
;
413 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
415 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
416 return conn
->smb2
.server
.system_time
;
419 return conn
->smb1
.server
.system_time
;
422 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
424 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
425 return &conn
->smb2
.server
.gss_blob
;
428 return &conn
->smb1
.server
.gss_blob
;
431 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
433 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
434 return &conn
->smb2
.server
.guid
;
437 return &conn
->smb1
.server
.guid
;
440 struct smbXcli_conn_samba_suicide_state
{
441 struct smbXcli_conn
*conn
;
446 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
448 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
449 struct tevent_context
*ev
,
450 struct smbXcli_conn
*conn
,
453 struct tevent_req
*req
, *subreq
;
454 struct smbXcli_conn_samba_suicide_state
*state
;
456 req
= tevent_req_create(mem_ctx
, &state
,
457 struct smbXcli_conn_samba_suicide_state
);
462 SIVAL(state
->buf
, 4, 0x74697865);
463 SCVAL(state
->buf
, 8, exitcode
);
464 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
466 state
->iov
.iov_base
= state
->buf
;
467 state
->iov
.iov_len
= sizeof(state
->buf
);
469 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
470 false, &state
->iov
, 1);
471 if (tevent_req_nomem(subreq
, req
)) {
472 return tevent_req_post(req
, ev
);
474 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
478 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
480 struct tevent_req
*req
= tevent_req_callback_data(
481 subreq
, struct tevent_req
);
482 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
483 req
, struct smbXcli_conn_samba_suicide_state
);
487 nwritten
= writev_recv(subreq
, &err
);
489 if (nwritten
== -1) {
490 NTSTATUS status
= map_nt_error_from_unix_common(err
);
491 smbXcli_conn_disconnect(state
->conn
, status
);
494 tevent_req_done(req
);
497 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
499 return tevent_req_simple_recv_ntstatus(req
);
502 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
505 TALLOC_CTX
*frame
= talloc_stackframe();
506 struct tevent_context
*ev
;
507 struct tevent_req
*req
;
508 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
511 if (smbXcli_conn_has_async_calls(conn
)) {
513 * Can't use sync call while an async call is in flight
515 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
518 ev
= tevent_context_init(frame
);
522 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
526 ok
= tevent_req_poll(req
, ev
);
528 status
= map_nt_error_from_unix_common(errno
);
531 status
= smbXcli_conn_samba_suicide_recv(req
);
537 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
539 return conn
->smb1
.capabilities
;
542 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
544 return conn
->smb1
.max_xmit
;
547 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
549 return conn
->smb1
.server
.session_key
;
552 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
554 return conn
->smb1
.server
.challenge
;
557 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
559 return conn
->smb1
.server
.security_mode
;
562 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
564 return conn
->smb1
.server
.readbraw
;
567 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
569 return conn
->smb1
.server
.writebraw
;
572 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
574 return conn
->smb1
.server
.lockread
;
577 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
579 return conn
->smb1
.server
.writeunlock
;
582 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
584 return conn
->smb1
.server
.time_zone
;
587 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
588 const DATA_BLOB user_session_key
,
589 const DATA_BLOB response
)
591 return smb_signing_activate(conn
->smb1
.signing
,
596 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
597 const uint8_t *buf
, uint32_t seqnum
)
599 return smb_signing_check_pdu(conn
->smb1
.signing
, buf
, seqnum
);
602 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
604 return smb_signing_is_active(conn
->smb1
.signing
);
607 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
608 struct smb_trans_enc_state
*es
)
610 /* Replace the old state, if any. */
611 if (conn
->smb1
.trans_enc
) {
612 TALLOC_FREE(conn
->smb1
.trans_enc
);
614 conn
->smb1
.trans_enc
= es
;
617 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
619 return common_encryption_on(conn
->smb1
.trans_enc
);
623 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
625 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
626 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
628 if (NT_STATUS_IS_OK(status
)) {
632 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
636 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
640 * Is the SMB command able to hold an AND_X successor
641 * @param[in] cmd The SMB command in question
642 * @retval Can we add a chained request after "cmd"?
644 bool smb1cli_is_andx_req(uint8_t cmd
)
664 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
666 size_t num_pending
= talloc_array_length(conn
->pending
);
672 result
= conn
->smb1
.mid
++;
673 if ((result
== 0) || (result
== 0xffff)) {
677 for (i
=0; i
<num_pending
; i
++) {
678 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
683 if (i
== num_pending
) {
689 void smbXcli_req_unset_pending(struct tevent_req
*req
)
691 struct smbXcli_req_state
*state
=
693 struct smbXcli_req_state
);
694 struct smbXcli_conn
*conn
= state
->conn
;
695 size_t num_pending
= talloc_array_length(conn
->pending
);
698 if (state
->smb1
.mid
!= 0) {
700 * This is a [nt]trans[2] request which waits
701 * for more than one reply.
706 talloc_set_destructor(req
, NULL
);
708 if (num_pending
== 1) {
710 * The pending read_smb tevent_req is a child of
711 * conn->pending. So if nothing is pending anymore, we need to
712 * delete the socket read fde.
714 TALLOC_FREE(conn
->pending
);
715 conn
->read_smb_req
= NULL
;
719 for (i
=0; i
<num_pending
; i
++) {
720 if (req
== conn
->pending
[i
]) {
724 if (i
== num_pending
) {
726 * Something's seriously broken. Just returning here is the
727 * right thing nevertheless, the point of this routine is to
728 * remove ourselves from conn->pending.
734 * Remove ourselves from the conn->pending array
736 for (; i
< (num_pending
- 1); i
++) {
737 conn
->pending
[i
] = conn
->pending
[i
+1];
741 * No NULL check here, we're shrinking by sizeof(void *), and
742 * talloc_realloc just adjusts the size for this.
744 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
749 static int smbXcli_req_destructor(struct tevent_req
*req
)
751 struct smbXcli_req_state
*state
=
753 struct smbXcli_req_state
);
756 * Make sure we really remove it from
757 * the pending array on destruction.
760 smbXcli_req_unset_pending(req
);
764 static bool smb1cli_req_cancel(struct tevent_req
*req
);
765 static bool smb2cli_req_cancel(struct tevent_req
*req
);
767 static bool smbXcli_req_cancel(struct tevent_req
*req
)
769 struct smbXcli_req_state
*state
=
771 struct smbXcli_req_state
);
773 if (!smbXcli_conn_is_connected(state
->conn
)) {
777 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
781 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
782 return smb2cli_req_cancel(req
);
785 return smb1cli_req_cancel(req
);
788 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
790 bool smbXcli_req_set_pending(struct tevent_req
*req
)
792 struct smbXcli_req_state
*state
=
794 struct smbXcli_req_state
);
795 struct smbXcli_conn
*conn
;
796 struct tevent_req
**pending
;
801 if (!smbXcli_conn_is_connected(conn
)) {
805 num_pending
= talloc_array_length(conn
->pending
);
807 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
809 if (pending
== NULL
) {
812 pending
[num_pending
] = req
;
813 conn
->pending
= pending
;
814 talloc_set_destructor(req
, smbXcli_req_destructor
);
815 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
817 if (!smbXcli_conn_receive_next(conn
)) {
819 * the caller should notify the current request
821 * And all other pending requests get notified
822 * by smbXcli_conn_disconnect().
824 smbXcli_req_unset_pending(req
);
825 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
832 static void smbXcli_conn_received(struct tevent_req
*subreq
);
834 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
836 size_t num_pending
= talloc_array_length(conn
->pending
);
837 struct tevent_req
*req
;
838 struct smbXcli_req_state
*state
;
840 if (conn
->read_smb_req
!= NULL
) {
844 if (num_pending
== 0) {
845 if (conn
->smb2
.mid
< UINT64_MAX
) {
846 /* no more pending requests, so we are done for now */
851 * If there are no more SMB2 requests possible,
852 * because we are out of message ids,
853 * we need to disconnect.
855 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
859 req
= conn
->pending
[0];
860 state
= tevent_req_data(req
, struct smbXcli_req_state
);
863 * We're the first ones, add the read_smb request that waits for the
864 * answer from the server
866 conn
->read_smb_req
= read_smb_send(conn
->pending
,
869 if (conn
->read_smb_req
== NULL
) {
872 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
876 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
878 tevent_queue_stop(conn
->outgoing
);
880 if (conn
->read_fd
!= -1) {
881 close(conn
->read_fd
);
883 if (conn
->write_fd
!= -1) {
884 close(conn
->write_fd
);
890 * Cancel all pending requests. We do not do a for-loop walking
891 * conn->pending because that array changes in
892 * smbXcli_req_unset_pending.
894 while (talloc_array_length(conn
->pending
) > 0) {
895 struct tevent_req
*req
;
896 struct smbXcli_req_state
*state
;
897 struct tevent_req
**chain
;
901 req
= conn
->pending
[0];
902 state
= tevent_req_data(req
, struct smbXcli_req_state
);
904 if (state
->smb1
.chained_requests
== NULL
) {
906 * We're dead. No point waiting for trans2
911 smbXcli_req_unset_pending(req
);
913 if (NT_STATUS_IS_OK(status
)) {
914 /* do not notify the callers */
919 * we need to defer the callback, because we may notify
920 * more then one caller.
922 tevent_req_defer_callback(req
, state
->ev
);
923 tevent_req_nterror(req
, status
);
927 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
928 num_chained
= talloc_array_length(chain
);
930 for (i
=0; i
<num_chained
; i
++) {
932 state
= tevent_req_data(req
, struct smbXcli_req_state
);
935 * We're dead. No point waiting for trans2
940 smbXcli_req_unset_pending(req
);
942 if (NT_STATUS_IS_OK(status
)) {
943 /* do not notify the callers */
948 * we need to defer the callback, because we may notify
949 * more than one caller.
951 tevent_req_defer_callback(req
, state
->ev
);
952 tevent_req_nterror(req
, status
);
959 * Fetch a smb request's mid. Only valid after the request has been sent by
960 * smb1cli_req_send().
962 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
964 struct smbXcli_req_state
*state
=
966 struct smbXcli_req_state
);
968 if (state
->smb1
.mid
!= 0) {
969 return state
->smb1
.mid
;
972 return SVAL(state
->smb1
.hdr
, HDR_MID
);
975 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
977 struct smbXcli_req_state
*state
=
979 struct smbXcli_req_state
);
981 state
->smb1
.mid
= mid
;
984 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
986 struct smbXcli_req_state
*state
=
988 struct smbXcli_req_state
);
990 return state
->smb1
.seqnum
;
993 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
995 struct smbXcli_req_state
*state
=
997 struct smbXcli_req_state
);
999 state
->smb1
.seqnum
= seqnum
;
1002 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1006 for (i
=0; i
<count
; i
++) {
1007 result
+= iov
[i
].iov_len
;
1012 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1013 const struct iovec
*iov
,
1016 size_t len
= smbXcli_iov_len(iov
, count
);
1021 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1026 for (i
=0; i
<count
; i
++) {
1027 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1028 copied
+= iov
[i
].iov_len
;
1033 static void smb1cli_req_flags(enum protocol_types protocol
,
1034 uint32_t smb1_capabilities
,
1035 uint8_t smb_command
,
1036 uint8_t additional_flags
,
1037 uint8_t clear_flags
,
1039 uint16_t additional_flags2
,
1040 uint16_t clear_flags2
,
1044 uint16_t flags2
= 0;
1046 if (protocol
>= PROTOCOL_LANMAN1
) {
1047 flags
|= FLAG_CASELESS_PATHNAMES
;
1048 flags
|= FLAG_CANONICAL_PATHNAMES
;
1051 if (protocol
>= PROTOCOL_LANMAN2
) {
1052 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1053 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1056 if (protocol
>= PROTOCOL_NT1
) {
1057 flags2
|= FLAGS2_IS_LONG_NAME
;
1059 if (smb1_capabilities
& CAP_UNICODE
) {
1060 flags2
|= FLAGS2_UNICODE_STRINGS
;
1062 if (smb1_capabilities
& CAP_STATUS32
) {
1063 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1065 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1066 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1070 flags
|= additional_flags
;
1071 flags
&= ~clear_flags
;
1072 flags2
|= additional_flags2
;
1073 flags2
&= ~clear_flags2
;
1079 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1081 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1083 struct smbXcli_req_state
*state
=
1084 tevent_req_data(req
,
1085 struct smbXcli_req_state
);
1092 struct tevent_req
*subreq
;
1095 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1096 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1097 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1098 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1099 tid
= SVAL(state
->smb1
.hdr
, HDR_TID
);
1100 uid
= SVAL(state
->smb1
.hdr
, HDR_UID
);
1101 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1103 subreq
= smb1cli_req_create(state
, state
->ev
,
1111 0, NULL
); /* bytes */
1112 if (subreq
== NULL
) {
1115 smb1cli_req_set_mid(subreq
, mid
);
1117 status
= smb1cli_req_chain_submit(&subreq
, 1);
1118 if (!NT_STATUS_IS_OK(status
)) {
1119 TALLOC_FREE(subreq
);
1122 smb1cli_req_set_mid(subreq
, 0);
1124 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1129 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1131 /* we do not care about the result */
1132 TALLOC_FREE(subreq
);
1135 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1136 struct tevent_context
*ev
,
1137 struct smbXcli_conn
*conn
,
1138 uint8_t smb_command
,
1139 uint8_t additional_flags
,
1140 uint8_t clear_flags
,
1141 uint16_t additional_flags2
,
1142 uint16_t clear_flags2
,
1143 uint32_t timeout_msec
,
1147 uint8_t wct
, uint16_t *vwv
,
1149 struct iovec
*bytes_iov
)
1151 struct tevent_req
*req
;
1152 struct smbXcli_req_state
*state
;
1154 uint16_t flags2
= 0;
1156 if (iov_count
> MAX_SMB_IOV
) {
1158 * Should not happen :-)
1163 req
= tevent_req_create(mem_ctx
, &state
,
1164 struct smbXcli_req_state
);
1171 state
->smb1
.recv_cmd
= 0xFF;
1172 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1173 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1174 if (state
->smb1
.recv_iov
== NULL
) {
1179 smb1cli_req_flags(conn
->protocol
,
1180 conn
->smb1
.capabilities
,
1189 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1190 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1191 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1192 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1193 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1194 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1195 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1196 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1197 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1198 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1199 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1201 state
->smb1
.vwv
= vwv
;
1203 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1205 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1206 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1207 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1208 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1209 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1210 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1211 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1212 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1214 if (iov_count
!= 0) {
1215 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1216 iov_count
* sizeof(*bytes_iov
));
1218 state
->smb1
.iov_count
= iov_count
+ 4;
1220 if (timeout_msec
> 0) {
1221 struct timeval endtime
;
1223 endtime
= timeval_current_ofs_msec(timeout_msec
);
1224 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1229 switch (smb_command
) {
1233 state
->one_way
= true;
1236 state
->one_way
= true;
1237 state
->smb1
.one_way_seqnum
= true;
1241 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1242 state
->one_way
= true;
1250 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1251 struct iovec
*iov
, int iov_count
,
1253 bool one_way_seqnum
)
1255 TALLOC_CTX
*frame
= NULL
;
1259 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1260 * iovec directly. MD5Update would do that just fine.
1263 if (iov_count
< 4) {
1264 return NT_STATUS_INVALID_PARAMETER_MIX
;
1266 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1267 return NT_STATUS_INVALID_PARAMETER_MIX
;
1269 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1270 return NT_STATUS_INVALID_PARAMETER_MIX
;
1272 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1273 return NT_STATUS_INVALID_PARAMETER_MIX
;
1275 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1276 return NT_STATUS_INVALID_PARAMETER_MIX
;
1279 frame
= talloc_stackframe();
1281 buf
= smbXcli_iov_concat(frame
, iov
, iov_count
);
1283 return NT_STATUS_NO_MEMORY
;
1286 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1288 smb_signing_sign_pdu(conn
->smb1
.signing
, buf
, *seqnum
);
1289 memcpy(iov
[1].iov_base
, buf
+4, iov
[1].iov_len
);
1292 return NT_STATUS_OK
;
1295 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1296 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1297 TALLOC_CTX
*tmp_mem
,
1300 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1301 struct smbXcli_req_state
*state
,
1302 struct iovec
*iov
, int iov_count
)
1304 struct tevent_req
*subreq
;
1309 if (!smbXcli_conn_is_connected(state
->conn
)) {
1310 return NT_STATUS_CONNECTION_DISCONNECTED
;
1313 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1314 return NT_STATUS_REVISION_MISMATCH
;
1317 if (iov_count
< 4) {
1318 return NT_STATUS_INVALID_PARAMETER_MIX
;
1320 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1321 return NT_STATUS_INVALID_PARAMETER_MIX
;
1323 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1324 return NT_STATUS_INVALID_PARAMETER_MIX
;
1326 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1327 return NT_STATUS_INVALID_PARAMETER_MIX
;
1329 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1330 return NT_STATUS_INVALID_PARAMETER_MIX
;
1333 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1334 if (cmd
== SMBreadBraw
) {
1335 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1336 return NT_STATUS_INVALID_PARAMETER_MIX
;
1338 state
->conn
->smb1
.read_braw_req
= req
;
1341 if (state
->smb1
.mid
!= 0) {
1342 mid
= state
->smb1
.mid
;
1344 mid
= smb1cli_alloc_mid(state
->conn
);
1346 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1348 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1350 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1351 &state
->smb1
.seqnum
,
1352 state
->smb1
.one_way_seqnum
);
1354 if (!NT_STATUS_IS_OK(status
)) {
1359 * If we supported multiple encrytion contexts
1360 * here we'd look up based on tid.
1362 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1363 char *buf
, *enc_buf
;
1365 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1367 return NT_STATUS_NO_MEMORY
;
1369 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1370 (char *)buf
, &enc_buf
);
1372 if (!NT_STATUS_IS_OK(status
)) {
1373 DEBUG(0, ("Error in encrypting client message: %s\n",
1374 nt_errstr(status
)));
1377 buf
= (char *)talloc_memdup(state
, enc_buf
,
1378 smb_len_nbt(enc_buf
)+4);
1381 return NT_STATUS_NO_MEMORY
;
1383 iov
[0].iov_base
= (void *)buf
;
1384 iov
[0].iov_len
= talloc_get_size(buf
);
1388 if (state
->conn
->dispatch_incoming
== NULL
) {
1389 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1392 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1394 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1395 state
->conn
->write_fd
, false, iov
, iov_count
);
1396 if (subreq
== NULL
) {
1397 return NT_STATUS_NO_MEMORY
;
1399 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1400 return NT_STATUS_OK
;
1403 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1404 struct tevent_context
*ev
,
1405 struct smbXcli_conn
*conn
,
1406 uint8_t smb_command
,
1407 uint8_t additional_flags
,
1408 uint8_t clear_flags
,
1409 uint16_t additional_flags2
,
1410 uint16_t clear_flags2
,
1411 uint32_t timeout_msec
,
1415 uint8_t wct
, uint16_t *vwv
,
1417 const uint8_t *bytes
)
1419 struct tevent_req
*req
;
1423 iov
.iov_base
= discard_const_p(void, bytes
);
1424 iov
.iov_len
= num_bytes
;
1426 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1427 additional_flags
, clear_flags
,
1428 additional_flags2
, clear_flags2
,
1435 if (!tevent_req_is_in_progress(req
)) {
1436 return tevent_req_post(req
, ev
);
1438 status
= smb1cli_req_chain_submit(&req
, 1);
1439 if (tevent_req_nterror(req
, status
)) {
1440 return tevent_req_post(req
, ev
);
1445 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1447 struct tevent_req
*req
=
1448 tevent_req_callback_data(subreq
,
1450 struct smbXcli_req_state
*state
=
1451 tevent_req_data(req
,
1452 struct smbXcli_req_state
);
1456 nwritten
= writev_recv(subreq
, &err
);
1457 TALLOC_FREE(subreq
);
1458 if (nwritten
== -1) {
1459 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1460 smbXcli_conn_disconnect(state
->conn
, status
);
1464 if (state
->one_way
) {
1465 state
->inbuf
= NULL
;
1466 tevent_req_done(req
);
1470 if (!smbXcli_req_set_pending(req
)) {
1471 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1476 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1478 struct smbXcli_conn
*conn
=
1479 tevent_req_callback_data(subreq
,
1480 struct smbXcli_conn
);
1481 TALLOC_CTX
*frame
= talloc_stackframe();
1487 if (subreq
!= conn
->read_smb_req
) {
1488 DEBUG(1, ("Internal error: cli_smb_received called with "
1489 "unexpected subreq\n"));
1490 status
= NT_STATUS_INTERNAL_ERROR
;
1491 smbXcli_conn_disconnect(conn
, status
);
1495 conn
->read_smb_req
= NULL
;
1497 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1498 TALLOC_FREE(subreq
);
1499 if (received
== -1) {
1500 status
= map_nt_error_from_unix_common(err
);
1501 smbXcli_conn_disconnect(conn
, status
);
1506 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1508 if (NT_STATUS_IS_OK(status
)) {
1510 * We should not do any more processing
1511 * as the dispatch function called
1512 * tevent_req_done().
1515 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1517 * We got an error, so notify all pending requests
1519 smbXcli_conn_disconnect(conn
, status
);
1524 * We got NT_STATUS_RETRY, so we may ask for a
1525 * next incoming pdu.
1527 if (!smbXcli_conn_receive_next(conn
)) {
1528 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1532 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1533 struct iovec
**piov
, int *pnum_iov
)
1544 buflen
= smb_len_nbt(buf
);
1547 hdr
= buf
+ NBT_HDR_SIZE
;
1549 if (buflen
< MIN_SMB_SIZE
) {
1550 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1554 * This returns iovec elements in the following order:
1569 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1571 return NT_STATUS_NO_MEMORY
;
1573 iov
[0].iov_base
= hdr
;
1574 iov
[0].iov_len
= HDR_WCT
;
1577 cmd
= CVAL(hdr
, HDR_COM
);
1581 size_t len
= buflen
- taken
;
1583 struct iovec
*iov_tmp
;
1590 * we need at least WCT and BCC
1592 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1594 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1595 __location__
, (int)len
, (int)needed
));
1600 * Now we check if the specified words are there
1602 wct
= CVAL(hdr
, wct_ofs
);
1603 needed
+= wct
* sizeof(uint16_t);
1605 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1606 __location__
, (int)len
, (int)needed
));
1611 * Now we check if the specified bytes are there
1613 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1614 bcc
= SVAL(hdr
, bcc_ofs
);
1615 needed
+= bcc
* sizeof(uint8_t);
1617 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1618 __location__
, (int)len
, (int)needed
));
1623 * we allocate 2 iovec structures for words and bytes
1625 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1627 if (iov_tmp
== NULL
) {
1629 return NT_STATUS_NO_MEMORY
;
1632 cur
= &iov
[num_iov
];
1635 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1636 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1637 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1638 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1642 if (!smb1cli_is_andx_req(cmd
)) {
1644 * If the current command does not have AndX chanining
1650 if (wct
== 0 && bcc
== 0) {
1652 * An empty response also ends the chain,
1653 * most likely with an error.
1659 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1660 __location__
, (int)wct
, (int)cmd
));
1663 cmd
= CVAL(cur
[0].iov_base
, 0);
1666 * If it is the end of the chain we are also done.
1670 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1672 if (wct_ofs
< taken
) {
1673 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1675 if (wct_ofs
> buflen
) {
1676 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1680 * we consumed everything up to the start of the next
1686 remaining
= buflen
- taken
;
1688 if (remaining
> 0 && num_iov
>= 3) {
1690 * The last DATA block gets the remaining
1691 * bytes, this is needed to support
1692 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1694 iov
[num_iov
-1].iov_len
+= remaining
;
1698 *pnum_iov
= num_iov
;
1699 return NT_STATUS_OK
;
1703 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1706 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1707 TALLOC_CTX
*tmp_mem
,
1710 struct tevent_req
*req
;
1711 struct smbXcli_req_state
*state
;
1718 const uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1719 struct iovec
*iov
= NULL
;
1721 struct tevent_req
**chain
= NULL
;
1722 size_t num_chained
= 0;
1723 size_t num_responses
= 0;
1725 if (conn
->smb1
.read_braw_req
!= NULL
) {
1726 req
= conn
->smb1
.read_braw_req
;
1727 conn
->smb1
.read_braw_req
= NULL
;
1728 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1730 smbXcli_req_unset_pending(req
);
1732 if (state
->smb1
.recv_iov
== NULL
) {
1734 * For requests with more than
1735 * one response, we have to readd the
1738 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1741 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1742 return NT_STATUS_OK
;
1746 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inbuf
+ NBT_HDR_SIZE
);
1747 state
->smb1
.recv_iov
[0].iov_len
= smb_len_nbt(inbuf
);
1748 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1749 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1751 state
->smb1
.recv_cmd
= SMBreadBraw
;
1752 state
->smb1
.recv_status
= NT_STATUS_OK
;
1753 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1755 tevent_req_done(req
);
1756 return NT_STATUS_OK
;
1759 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1760 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1761 DEBUG(10, ("Got non-SMB PDU\n"));
1762 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1766 * If we supported multiple encrytion contexts
1767 * here we'd look up based on tid.
1769 if (common_encryption_on(conn
->smb1
.trans_enc
)
1770 && (CVAL(inbuf
, 0) == 0)) {
1771 uint16_t enc_ctx_num
;
1773 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1774 if (!NT_STATUS_IS_OK(status
)) {
1775 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1776 nt_errstr(status
)));
1780 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1781 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1783 conn
->smb1
.trans_enc
->enc_ctx_num
));
1784 return NT_STATUS_INVALID_HANDLE
;
1787 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1789 if (!NT_STATUS_IS_OK(status
)) {
1790 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1791 nt_errstr(status
)));
1796 mid
= SVAL(inhdr
, HDR_MID
);
1797 num_pending
= talloc_array_length(conn
->pending
);
1799 for (i
=0; i
<num_pending
; i
++) {
1800 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1804 if (i
== num_pending
) {
1805 /* Dump unexpected reply */
1806 return NT_STATUS_RETRY
;
1809 oplock_break
= false;
1811 if (mid
== 0xffff) {
1813 * Paranoia checks that this is really an oplock break request.
1815 oplock_break
= (smb_len_nbt(inbuf
) == 51); /* hdr + 8 words */
1816 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1817 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1818 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1819 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1821 if (!oplock_break
) {
1822 /* Dump unexpected reply */
1823 return NT_STATUS_RETRY
;
1827 req
= conn
->pending
[i
];
1828 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1830 if (!oplock_break
/* oplock breaks are not signed */
1831 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1832 inbuf
, state
->smb1
.seqnum
+1)) {
1833 DEBUG(10, ("cli_check_sign_mac failed\n"));
1834 return NT_STATUS_ACCESS_DENIED
;
1837 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1839 if (!NT_STATUS_IS_OK(status
)) {
1840 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1841 nt_errstr(status
)));
1845 cmd
= CVAL(inhdr
, HDR_COM
);
1846 status
= smb1cli_pull_raw_error(inhdr
);
1848 if (state
->smb1
.chained_requests
== NULL
) {
1850 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1853 smbXcli_req_unset_pending(req
);
1855 if (state
->smb1
.recv_iov
== NULL
) {
1857 * For requests with more than
1858 * one response, we have to readd the
1861 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1864 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1865 return NT_STATUS_OK
;
1869 state
->smb1
.recv_cmd
= cmd
;
1870 state
->smb1
.recv_status
= status
;
1871 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1873 state
->smb1
.recv_iov
[0] = iov
[0];
1874 state
->smb1
.recv_iov
[1] = iov
[1];
1875 state
->smb1
.recv_iov
[2] = iov
[2];
1877 if (talloc_array_length(conn
->pending
) == 0) {
1878 tevent_req_done(req
);
1879 return NT_STATUS_OK
;
1882 tevent_req_defer_callback(req
, state
->ev
);
1883 tevent_req_done(req
);
1884 return NT_STATUS_RETRY
;
1887 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1888 num_chained
= talloc_array_length(chain
);
1889 num_responses
= (num_iov
- 1)/2;
1891 if (num_responses
> num_chained
) {
1892 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1895 for (i
=0; i
<num_chained
; i
++) {
1896 size_t iov_idx
= 1 + (i
*2);
1897 struct iovec
*cur
= &iov
[iov_idx
];
1901 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1903 smbXcli_req_unset_pending(req
);
1906 * as we finish multiple requests here
1907 * we need to defer the callbacks as
1908 * they could destroy our current stack state.
1910 tevent_req_defer_callback(req
, state
->ev
);
1912 if (i
>= num_responses
) {
1913 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1917 if (state
->smb1
.recv_iov
== NULL
) {
1919 * For requests with more than
1920 * one response, we have to readd the
1923 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1926 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1931 state
->smb1
.recv_cmd
= cmd
;
1933 if (i
== (num_responses
- 1)) {
1935 * The last request in the chain gets the status
1937 state
->smb1
.recv_status
= status
;
1939 cmd
= CVAL(cur
[0].iov_base
, 0);
1940 state
->smb1
.recv_status
= NT_STATUS_OK
;
1943 state
->inbuf
= inbuf
;
1946 * Note: here we use talloc_reference() in a way
1947 * that does not expose it to the caller.
1949 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
1950 if (tevent_req_nomem(inbuf_ref
, req
)) {
1954 /* copy the related buffers */
1955 state
->smb1
.recv_iov
[0] = iov
[0];
1956 state
->smb1
.recv_iov
[1] = cur
[0];
1957 state
->smb1
.recv_iov
[2] = cur
[1];
1959 tevent_req_done(req
);
1962 return NT_STATUS_RETRY
;
1965 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
1966 TALLOC_CTX
*mem_ctx
,
1967 struct iovec
**piov
,
1971 uint32_t *pvwv_offset
,
1972 uint32_t *pnum_bytes
,
1974 uint32_t *pbytes_offset
,
1976 const struct smb1cli_req_expected_response
*expected
,
1977 size_t num_expected
)
1979 struct smbXcli_req_state
*state
=
1980 tevent_req_data(req
,
1981 struct smbXcli_req_state
);
1982 NTSTATUS status
= NT_STATUS_OK
;
1983 struct iovec
*recv_iov
= NULL
;
1984 uint8_t *hdr
= NULL
;
1986 uint32_t vwv_offset
= 0;
1987 uint16_t *vwv
= NULL
;
1988 uint32_t num_bytes
= 0;
1989 uint32_t bytes_offset
= 0;
1990 uint8_t *bytes
= NULL
;
1992 bool found_status
= false;
1993 bool found_size
= false;
2007 if (pvwv_offset
!= NULL
) {
2010 if (pnum_bytes
!= NULL
) {
2013 if (pbytes
!= NULL
) {
2016 if (pbytes_offset
!= NULL
) {
2019 if (pinbuf
!= NULL
) {
2023 if (state
->inbuf
!= NULL
) {
2024 recv_iov
= state
->smb1
.recv_iov
;
2025 state
->smb1
.recv_iov
= NULL
;
2026 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2027 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2028 wct
= recv_iov
[1].iov_len
/2;
2029 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2030 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2031 num_bytes
= recv_iov
[2].iov_len
;
2032 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2033 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2037 if (tevent_req_is_nterror(req
, &status
)) {
2038 for (i
=0; i
< num_expected
; i
++) {
2039 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2040 found_status
= true;
2046 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2052 if (num_expected
== 0) {
2053 found_status
= true;
2057 status
= state
->smb1
.recv_status
;
2059 for (i
=0; i
< num_expected
; i
++) {
2060 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2064 found_status
= true;
2065 if (expected
[i
].wct
== 0) {
2070 if (expected
[i
].wct
== wct
) {
2076 if (!found_status
) {
2081 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2085 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2097 if (pvwv_offset
!= NULL
) {
2098 *pvwv_offset
= vwv_offset
;
2100 if (pnum_bytes
!= NULL
) {
2101 *pnum_bytes
= num_bytes
;
2103 if (pbytes
!= NULL
) {
2106 if (pbytes_offset
!= NULL
) {
2107 *pbytes_offset
= bytes_offset
;
2109 if (pinbuf
!= NULL
) {
2110 *pinbuf
= state
->inbuf
;
2116 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2123 for (i
=0; i
<num_reqs
; i
++) {
2124 struct smbXcli_req_state
*state
;
2125 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2126 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2127 state
->smb1
.iov_count
-2);
2128 wct_ofs
= (wct_ofs
+ 3) & ~3;
2133 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2135 struct smbXcli_req_state
*first_state
=
2136 tevent_req_data(reqs
[0],
2137 struct smbXcli_req_state
);
2138 struct smbXcli_req_state
*state
;
2140 size_t chain_padding
= 0;
2142 struct iovec
*iov
= NULL
;
2143 struct iovec
*this_iov
;
2147 if (num_reqs
== 1) {
2148 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2149 first_state
->smb1
.iov
,
2150 first_state
->smb1
.iov_count
);
2154 for (i
=0; i
<num_reqs
; i
++) {
2155 if (!tevent_req_is_in_progress(reqs
[i
])) {
2156 return NT_STATUS_INTERNAL_ERROR
;
2159 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2161 if (state
->smb1
.iov_count
< 4) {
2162 return NT_STATUS_INVALID_PARAMETER_MIX
;
2167 * The NBT and SMB header
2180 iovlen
+= state
->smb1
.iov_count
- 2;
2183 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2185 return NT_STATUS_NO_MEMORY
;
2188 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2189 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2190 if (first_state
->smb1
.chained_requests
== NULL
) {
2192 return NT_STATUS_NO_MEMORY
;
2195 wct_offset
= HDR_WCT
;
2198 for (i
=0; i
<num_reqs
; i
++) {
2199 size_t next_padding
= 0;
2202 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2204 if (i
< num_reqs
-1) {
2205 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2206 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2208 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2209 return NT_STATUS_INVALID_PARAMETER_MIX
;
2213 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2214 state
->smb1
.iov_count
-2) + 1;
2215 if ((wct_offset
% 4) != 0) {
2216 next_padding
= 4 - (wct_offset
% 4);
2218 wct_offset
+= next_padding
;
2219 vwv
= state
->smb1
.vwv
;
2221 if (i
< num_reqs
-1) {
2222 struct smbXcli_req_state
*next_state
=
2223 tevent_req_data(reqs
[i
+1],
2224 struct smbXcli_req_state
);
2225 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2227 SSVAL(vwv
+1, 0, wct_offset
);
2228 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2229 /* properly end the chain */
2230 SCVAL(vwv
+0, 0, 0xff);
2231 SCVAL(vwv
+0, 1, 0xff);
2237 * The NBT and SMB header
2239 this_iov
[0] = state
->smb1
.iov
[0];
2240 this_iov
[1] = state
->smb1
.iov
[1];
2244 * This one is a bit subtle. We have to add
2245 * chain_padding bytes between the requests, and we
2246 * have to also include the wct field of the
2247 * subsequent requests. We use the subsequent header
2248 * for the padding, it contains the wct field in its
2251 this_iov
[0].iov_len
= chain_padding
+1;
2252 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2253 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2254 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2259 * copy the words and bytes
2261 memcpy(this_iov
, state
->smb1
.iov
+2,
2262 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2263 this_iov
+= state
->smb1
.iov_count
- 2;
2264 chain_padding
= next_padding
;
2267 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2268 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2270 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2271 return NT_STATUS_INVALID_PARAMETER_MIX
;
2274 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2275 if (!NT_STATUS_IS_OK(status
)) {
2277 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2281 return NT_STATUS_OK
;
2284 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2286 return ((tevent_queue_length(conn
->outgoing
) != 0)
2287 || (talloc_array_length(conn
->pending
) != 0));
2290 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2292 return conn
->smb2
.server
.capabilities
;
2295 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2297 return conn
->smb2
.server
.security_mode
;
2300 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2302 return conn
->smb2
.server
.max_trans_size
;
2305 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2307 return conn
->smb2
.server
.max_read_size
;
2310 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2312 return conn
->smb2
.server
.max_write_size
;
2315 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2316 uint16_t max_credits
)
2318 conn
->smb2
.max_credits
= max_credits
;
2321 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2323 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2325 struct smbXcli_req_state
*state
=
2326 tevent_req_data(req
,
2327 struct smbXcli_req_state
);
2328 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2329 uint32_t pid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_PID
);
2330 uint32_t tid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_TID
);
2331 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2332 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2333 struct smbXcli_session
*session
= state
->session
;
2334 uint8_t *fixed
= state
->smb2
.pad
;
2335 uint16_t fixed_len
= 4;
2336 struct tevent_req
*subreq
;
2337 struct smbXcli_req_state
*substate
;
2340 SSVAL(fixed
, 0, 0x04);
2343 subreq
= smb2cli_req_create(state
, state
->ev
,
2351 if (subreq
== NULL
) {
2354 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2356 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2360 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2361 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2362 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2363 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2364 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2366 status
= smb2cli_req_compound_submit(&subreq
, 1);
2367 if (!NT_STATUS_IS_OK(status
)) {
2368 TALLOC_FREE(subreq
);
2372 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2377 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2379 /* we do not care about the result */
2380 TALLOC_FREE(subreq
);
2383 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2384 struct tevent_context
*ev
,
2385 struct smbXcli_conn
*conn
,
2387 uint32_t additional_flags
,
2388 uint32_t clear_flags
,
2389 uint32_t timeout_msec
,
2392 struct smbXcli_session
*session
,
2393 const uint8_t *fixed
,
2398 struct tevent_req
*req
;
2399 struct smbXcli_req_state
*state
;
2403 req
= tevent_req_create(mem_ctx
, &state
,
2404 struct smbXcli_req_state
);
2411 state
->session
= session
;
2414 uid
= session
->smb2
.session_id
;
2417 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2418 if (state
->smb2
.recv_iov
== NULL
) {
2423 flags
|= additional_flags
;
2424 flags
&= ~clear_flags
;
2426 state
->smb2
.fixed
= fixed
;
2427 state
->smb2
.fixed_len
= fixed_len
;
2428 state
->smb2
.dyn
= dyn
;
2429 state
->smb2
.dyn_len
= dyn_len
;
2431 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2432 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2433 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2434 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2435 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2436 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2437 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2440 case SMB2_OP_CANCEL
:
2441 state
->one_way
= true;
2445 * If this is a dummy request, it will have
2446 * UINT64_MAX as message id.
2447 * If we send on break acknowledgement,
2448 * this gets overwritten later.
2450 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2454 if (timeout_msec
> 0) {
2455 struct timeval endtime
;
2457 endtime
= timeval_current_ofs_msec(timeout_msec
);
2458 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2466 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2468 struct smbXcli_req_state
*state
=
2469 tevent_req_data(req
,
2470 struct smbXcli_req_state
);
2472 state
->smb2
.notify_async
= true;
2475 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2476 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2477 TALLOC_CTX
*tmp_mem
,
2480 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2483 struct smbXcli_req_state
*state
;
2484 struct tevent_req
*subreq
;
2486 int i
, num_iov
, nbt_len
;
2489 * 1 for the nbt length
2490 * per request: HDR, fixed, dyn, padding
2491 * -1 because the last one does not need padding
2494 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 4*num_reqs
- 1);
2496 return NT_STATUS_NO_MEMORY
;
2502 for (i
=0; i
<num_reqs
; i
++) {
2511 const DATA_BLOB
*signing_key
= NULL
;
2513 if (!tevent_req_is_in_progress(reqs
[i
])) {
2514 return NT_STATUS_INTERNAL_ERROR
;
2517 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2519 if (!smbXcli_conn_is_connected(state
->conn
)) {
2520 return NT_STATUS_CONNECTION_DISCONNECTED
;
2523 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2524 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2525 return NT_STATUS_REVISION_MISMATCH
;
2528 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2529 if (opcode
== SMB2_OP_CANCEL
) {
2533 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2535 return NT_STATUS_CONNECTION_ABORTED
;
2538 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2539 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2544 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2546 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2547 if (avail
< charge
) {
2548 return NT_STATUS_INTERNAL_ERROR
;
2552 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2553 credits
= state
->conn
->smb2
.max_credits
-
2554 state
->conn
->smb2
.cur_credits
;
2556 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2560 mid
= state
->conn
->smb2
.mid
;
2561 state
->conn
->smb2
.mid
+= charge
;
2562 state
->conn
->smb2
.cur_credits
-= charge
;
2564 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2565 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2567 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2568 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2571 if (state
->session
) {
2572 bool should_sign
= state
->session
->smb2
.should_sign
;
2574 if (opcode
== SMB2_OP_SESSSETUP
&&
2575 state
->session
->smb2
.signing_key
.length
!= 0) {
2580 * We prefer the channel signing key if it is
2584 signing_key
= &state
->session
->smb2
.channel_signing_key
;
2588 * If it is a channel binding, we already have the main
2589 * signing key and try that one.
2591 if (signing_key
&& signing_key
->length
== 0) {
2592 signing_key
= &state
->session
->smb2
.signing_key
;
2596 * If we do not have any session key yet, we skip the
2597 * signing of SMB2_OP_SESSSETUP requests.
2599 if (signing_key
&& signing_key
->length
== 0) {
2605 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2606 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2609 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2610 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2613 if (state
->smb2
.dyn
!= NULL
) {
2614 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2615 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2619 reqlen
= sizeof(state
->smb2
.hdr
);
2620 reqlen
+= state
->smb2
.fixed_len
;
2621 reqlen
+= state
->smb2
.dyn_len
;
2623 if (i
< num_reqs
-1) {
2624 if ((reqlen
% 8) > 0) {
2625 uint8_t pad
= 8 - (reqlen
% 8);
2626 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2627 iov
[num_iov
].iov_len
= pad
;
2631 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2638 status
= smb2_signing_sign_pdu(*signing_key
,
2639 state
->session
->conn
->protocol
,
2640 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2641 if (!NT_STATUS_IS_OK(status
)) {
2646 ret
= smbXcli_req_set_pending(reqs
[i
]);
2648 return NT_STATUS_NO_MEMORY
;
2652 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2653 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2654 iov
[0].iov_base
= state
->length_hdr
;
2655 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2657 if (state
->conn
->dispatch_incoming
== NULL
) {
2658 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2661 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2662 state
->conn
->write_fd
, false, iov
, num_iov
);
2663 if (subreq
== NULL
) {
2664 return NT_STATUS_NO_MEMORY
;
2666 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2667 return NT_STATUS_OK
;
2670 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2672 struct smbXcli_req_state
*state
=
2673 tevent_req_data(req
,
2674 struct smbXcli_req_state
);
2676 state
->smb2
.credit_charge
= charge
;
2679 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2680 struct tevent_context
*ev
,
2681 struct smbXcli_conn
*conn
,
2683 uint32_t additional_flags
,
2684 uint32_t clear_flags
,
2685 uint32_t timeout_msec
,
2688 struct smbXcli_session
*session
,
2689 const uint8_t *fixed
,
2694 struct tevent_req
*req
;
2697 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2698 additional_flags
, clear_flags
,
2701 fixed
, fixed_len
, dyn
, dyn_len
);
2705 if (!tevent_req_is_in_progress(req
)) {
2706 return tevent_req_post(req
, ev
);
2708 status
= smb2cli_req_compound_submit(&req
, 1);
2709 if (tevent_req_nterror(req
, status
)) {
2710 return tevent_req_post(req
, ev
);
2715 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2717 struct tevent_req
*req
=
2718 tevent_req_callback_data(subreq
,
2720 struct smbXcli_req_state
*state
=
2721 tevent_req_data(req
,
2722 struct smbXcli_req_state
);
2726 nwritten
= writev_recv(subreq
, &err
);
2727 TALLOC_FREE(subreq
);
2728 if (nwritten
== -1) {
2729 /* here, we need to notify all pending requests */
2730 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2731 smbXcli_conn_disconnect(state
->conn
, status
);
2736 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2739 TALLOC_CTX
*mem_ctx
,
2740 struct iovec
**piov
, int *pnum_iov
)
2745 uint8_t *first_hdr
= buf
;
2747 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2749 return NT_STATUS_NO_MEMORY
;
2752 while (taken
< buflen
) {
2755 size_t len
= buflen
- taken
;
2756 uint8_t *hdr
= first_hdr
+ taken
;
2759 size_t next_command_ofs
;
2761 struct iovec
*iov_tmp
;
2764 DEBUG(10, ("%d bytes left, expected at least %d\n",
2768 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2769 struct smbXcli_session
*s
;
2771 struct iovec tf_iov
[2];
2774 if (len
< SMB2_TF_HDR_SIZE
) {
2775 DEBUG(10, ("%d bytes left, expected at least %d\n",
2776 (int)len
, SMB2_TF_HDR_SIZE
));
2780 tf_len
= SMB2_TF_HDR_SIZE
;
2783 hdr
= first_hdr
+ taken
;
2784 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
2785 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
2788 for (; s
; s
= s
->next
) {
2789 if (s
->smb2
.session_id
!= uid
) {
2796 DEBUG(10, ("unknown session_id %llu\n",
2797 (unsigned long long)uid
));
2801 tf_iov
[0].iov_base
= (void *)tf
;
2802 tf_iov
[0].iov_len
= tf_len
;
2803 tf_iov
[1].iov_base
= (void *)hdr
;
2804 tf_iov
[1].iov_len
= len
;
2806 status
= smb2_signing_decrypt_pdu(s
->smb2
.decryption_key
,
2809 if (!NT_STATUS_IS_OK(status
)) {
2816 * We need the header plus the body length field
2819 if (len
< SMB2_HDR_BODY
+ 2) {
2820 DEBUG(10, ("%d bytes left, expected at least %d\n",
2821 (int)len
, SMB2_HDR_BODY
));
2824 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
2825 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
2829 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
2830 DEBUG(10, ("Got HDR len %d, expected %d\n",
2831 SVAL(hdr
, 4), SMB2_HDR_BODY
));
2836 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
2837 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
2839 if (next_command_ofs
!= 0) {
2840 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
2843 if (next_command_ofs
> full_size
) {
2846 if (tf
&& next_command_ofs
< len
) {
2849 full_size
= next_command_ofs
;
2851 if (body_size
< 2) {
2854 body_size
&= 0xfffe;
2856 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
2860 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2862 if (iov_tmp
== NULL
) {
2864 return NT_STATUS_NO_MEMORY
;
2867 cur
= &iov
[num_iov
];
2870 cur
[0].iov_base
= tf
;
2871 cur
[0].iov_len
= tf_len
;
2872 cur
[1].iov_base
= hdr
;
2873 cur
[1].iov_len
= SMB2_HDR_BODY
;
2874 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
2875 cur
[2].iov_len
= body_size
;
2876 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
2877 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
2883 *pnum_iov
= num_iov
;
2884 return NT_STATUS_OK
;
2888 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2891 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
2894 size_t num_pending
= talloc_array_length(conn
->pending
);
2897 for (i
=0; i
<num_pending
; i
++) {
2898 struct tevent_req
*req
= conn
->pending
[i
];
2899 struct smbXcli_req_state
*state
=
2900 tevent_req_data(req
,
2901 struct smbXcli_req_state
);
2903 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
2910 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2911 TALLOC_CTX
*tmp_mem
,
2914 struct tevent_req
*req
;
2915 struct smbXcli_req_state
*state
= NULL
;
2920 struct smbXcli_session
*last_session
= NULL
;
2921 size_t inbuf_len
= smb_len_tcp(inbuf
);
2923 status
= smb2cli_inbuf_parse_compound(conn
,
2924 inbuf
+ NBT_HDR_SIZE
,
2928 if (!NT_STATUS_IS_OK(status
)) {
2932 for (i
=0; i
<num_iov
; i
+=4) {
2933 uint8_t *inbuf_ref
= NULL
;
2934 struct iovec
*cur
= &iov
[i
];
2935 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
2936 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
2937 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
2938 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
2939 uint16_t req_opcode
;
2941 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
2942 uint32_t new_credits
;
2943 struct smbXcli_session
*session
= NULL
;
2944 const DATA_BLOB
*signing_key
= NULL
;
2945 bool should_sign
= false;
2947 new_credits
= conn
->smb2
.cur_credits
;
2948 new_credits
+= credits
;
2949 if (new_credits
> UINT16_MAX
) {
2950 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2952 conn
->smb2
.cur_credits
+= credits
;
2954 req
= smb2cli_conn_find_pending(conn
, mid
);
2956 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2958 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2960 state
->smb2
.got_async
= false;
2962 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2963 if (opcode
!= req_opcode
) {
2964 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2966 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2968 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
2969 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2972 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
2973 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
2974 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
2975 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
2978 * async interim responses are not signed,
2979 * even if the SMB2_HDR_FLAG_SIGNED flag
2982 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
2983 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
2984 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
2986 if (state
->smb2
.notify_async
) {
2987 state
->smb2
.got_async
= true;
2988 tevent_req_defer_callback(req
, state
->ev
);
2989 tevent_req_notify_callback(req
);
2994 session
= state
->session
;
2995 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
2996 session
= last_session
;
2998 last_session
= session
;
3001 should_sign
= session
->smb2
.should_sign
;
3002 if (opcode
== SMB2_OP_SESSSETUP
&&
3003 session
->smb2
.signing_key
.length
!= 0) {
3009 * If we have a SMB2_TRANSFORM header we already verified
3012 if (cur
[0].iov_len
== SMB2_TF_HDR_SIZE
) {
3013 should_sign
= false;
3017 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3018 return NT_STATUS_ACCESS_DENIED
;
3022 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3023 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3025 if (session
== NULL
) {
3026 struct smbXcli_session
*s
;
3028 s
= state
->conn
->sessions
;
3029 for (; s
; s
= s
->next
) {
3030 if (s
->smb2
.session_id
!= uid
) {
3039 if (session
== NULL
) {
3040 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3043 last_session
= session
;
3044 signing_key
= &session
->smb2
.channel_signing_key
;
3047 if (opcode
== SMB2_OP_SESSSETUP
) {
3049 * We prefer the channel signing key, if it is
3052 * If we do not have a channel signing key yet,
3053 * we try the main signing key, if it is not
3054 * the final response.
3056 if (signing_key
&& signing_key
->length
== 0 &&
3057 !NT_STATUS_IS_OK(status
)) {
3058 signing_key
= &session
->smb2
.signing_key
;
3061 if (signing_key
&& signing_key
->length
== 0) {
3063 * If we do not have a session key to
3064 * verify the signature, we defer the
3065 * signing check to the caller.
3067 * The caller gets NT_STATUS_OK, it
3069 * smb2cli_session_set_session_key()
3071 * smb2cli_session_set_channel_key()
3072 * which will check the signature
3073 * with the channel signing key.
3079 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3081 * if the server returns NT_STATUS_USER_SESSION_DELETED
3082 * the response is not signed and we should
3083 * propagate the NT_STATUS_USER_SESSION_DELETED
3084 * status to the caller.
3089 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3090 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3091 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3093 * if the server returns
3094 * NT_STATUS_NETWORK_NAME_DELETED
3095 * NT_STATUS_FILE_CLOSED
3096 * NT_STATUS_INVALID_PARAMETER
3097 * the response might not be signed
3098 * as this happens before the signing checks.
3100 * If server echos the signature (or all zeros)
3101 * we should report the status from the server
3107 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3108 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3111 state
->smb2
.signing_skipped
= true;
3117 static const uint8_t zeros
[16];
3119 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3123 state
->smb2
.signing_skipped
= true;
3130 status
= smb2_signing_check_pdu(*signing_key
,
3131 state
->conn
->protocol
,
3133 if (!NT_STATUS_IS_OK(status
)) {
3135 * If the signing check fails, we disconnect
3142 smbXcli_req_unset_pending(req
);
3145 * There might be more than one response
3146 * we need to defer the notifications
3148 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3153 tevent_req_defer_callback(req
, state
->ev
);
3157 * Note: here we use talloc_reference() in a way
3158 * that does not expose it to the caller.
3160 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3161 if (tevent_req_nomem(inbuf_ref
, req
)) {
3165 /* copy the related buffers */
3166 state
->smb2
.recv_iov
[0] = cur
[1];
3167 state
->smb2
.recv_iov
[1] = cur
[2];
3168 state
->smb2
.recv_iov
[2] = cur
[3];
3170 tevent_req_done(req
);
3174 return NT_STATUS_RETRY
;
3177 return NT_STATUS_OK
;
3180 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3181 struct iovec
**piov
,
3182 const struct smb2cli_req_expected_response
*expected
,
3183 size_t num_expected
)
3185 struct smbXcli_req_state
*state
=
3186 tevent_req_data(req
,
3187 struct smbXcli_req_state
);
3190 bool found_status
= false;
3191 bool found_size
= false;
3198 if (state
->smb2
.got_async
) {
3199 return STATUS_PENDING
;
3202 if (tevent_req_is_nterror(req
, &status
)) {
3203 for (i
=0; i
< num_expected
; i
++) {
3204 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3205 found_status
= true;
3211 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3217 if (num_expected
== 0) {
3218 found_status
= true;
3222 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3223 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3225 for (i
=0; i
< num_expected
; i
++) {
3226 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3230 found_status
= true;
3231 if (expected
[i
].body_size
== 0) {
3236 if (expected
[i
].body_size
== body_size
) {
3242 if (!found_status
) {
3246 if (state
->smb2
.signing_skipped
) {
3247 if (num_expected
> 0) {
3248 return NT_STATUS_ACCESS_DENIED
;
3250 if (!NT_STATUS_IS_ERR(status
)) {
3251 return NT_STATUS_ACCESS_DENIED
;
3256 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3260 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3266 static const struct {
3267 enum protocol_types proto
;
3268 const char *smb1_name
;
3269 } smb1cli_prots
[] = {
3270 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3271 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3272 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3273 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3274 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3275 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3276 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3277 {PROTOCOL_LANMAN2
, "Samba"},
3278 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3279 {PROTOCOL_NT1
, "NT LM 0.12"},
3280 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3281 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3284 static const struct {
3285 enum protocol_types proto
;
3286 uint16_t smb2_dialect
;
3287 } smb2cli_prots
[] = {
3288 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3289 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3290 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3291 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3292 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3295 struct smbXcli_negprot_state
{
3296 struct smbXcli_conn
*conn
;
3297 struct tevent_context
*ev
;
3298 uint32_t timeout_msec
;
3299 enum protocol_types min_protocol
;
3300 enum protocol_types max_protocol
;
3304 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3308 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3309 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3310 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3311 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3312 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3313 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3317 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3318 struct tevent_context
*ev
,
3319 struct smbXcli_conn
*conn
,
3320 uint32_t timeout_msec
,
3321 enum protocol_types min_protocol
,
3322 enum protocol_types max_protocol
)
3324 struct tevent_req
*req
, *subreq
;
3325 struct smbXcli_negprot_state
*state
;
3327 req
= tevent_req_create(mem_ctx
, &state
,
3328 struct smbXcli_negprot_state
);
3334 state
->timeout_msec
= timeout_msec
;
3335 state
->min_protocol
= min_protocol
;
3336 state
->max_protocol
= max_protocol
;
3338 if (min_protocol
== PROTOCOL_NONE
) {
3339 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3340 return tevent_req_post(req
, ev
);
3343 if (max_protocol
== PROTOCOL_NONE
) {
3344 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3345 return tevent_req_post(req
, ev
);
3348 if (min_protocol
> max_protocol
) {
3349 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3350 return tevent_req_post(req
, ev
);
3353 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3354 (max_protocol
< PROTOCOL_SMB2_02
)) {
3358 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3360 subreq
= smbXcli_negprot_smb1_subreq(state
);
3361 if (tevent_req_nomem(subreq
, req
)) {
3362 return tevent_req_post(req
, ev
);
3364 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3368 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3369 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3373 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3375 subreq
= smbXcli_negprot_smb2_subreq(state
);
3376 if (tevent_req_nomem(subreq
, req
)) {
3377 return tevent_req_post(req
, ev
);
3379 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3384 * We send an SMB1 negprot with the SMB2 dialects
3385 * and expect a SMB1 or a SMB2 response.
3387 * smbXcli_negprot_dispatch_incoming() will fix the
3388 * callback to match protocol of the response.
3390 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3392 subreq
= smbXcli_negprot_smb1_subreq(state
);
3393 if (tevent_req_nomem(subreq
, req
)) {
3394 return tevent_req_post(req
, ev
);
3396 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3400 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3402 struct tevent_req
*req
=
3403 tevent_req_callback_data(subreq
,
3408 * we just want the low level error
3410 status
= tevent_req_simple_recv_ntstatus(subreq
);
3411 TALLOC_FREE(subreq
);
3412 if (tevent_req_nterror(req
, status
)) {
3416 /* this should never happen */
3417 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3420 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3423 DATA_BLOB bytes
= data_blob_null
;
3427 /* setup the protocol strings */
3428 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3432 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3436 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3440 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3446 * We now it is already ascii and
3447 * we want NULL termination.
3449 ok
= data_blob_append(state
, &bytes
,
3450 smb1cli_prots
[i
].smb1_name
,
3451 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3457 smb1cli_req_flags(state
->max_protocol
,
3458 state
->conn
->smb1
.client
.capabilities
,
3463 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3467 state
->timeout_msec
,
3468 0xFFFE, 0, 0, /* pid, tid, uid */
3469 0, NULL
, /* wct, vwv */
3470 bytes
.length
, bytes
.data
);
3473 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3475 struct tevent_req
*req
=
3476 tevent_req_callback_data(subreq
,
3478 struct smbXcli_negprot_state
*state
=
3479 tevent_req_data(req
,
3480 struct smbXcli_negprot_state
);
3481 struct smbXcli_conn
*conn
= state
->conn
;
3482 struct iovec
*recv_iov
= NULL
;
3491 size_t num_prots
= 0;
3493 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3494 uint32_t both_capabilities
;
3495 uint32_t server_capabilities
= 0;
3496 uint32_t capabilities
;
3497 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3498 uint32_t server_max_xmit
= 0;
3500 uint32_t server_max_mux
= 0;
3501 uint16_t server_security_mode
= 0;
3502 uint32_t server_session_key
= 0;
3503 bool server_readbraw
= false;
3504 bool server_writebraw
= false;
3505 bool server_lockread
= false;
3506 bool server_writeunlock
= false;
3507 struct GUID server_guid
= GUID_zero();
3508 DATA_BLOB server_gss_blob
= data_blob_null
;
3509 uint8_t server_challenge
[8];
3510 char *server_workgroup
= NULL
;
3511 char *server_name
= NULL
;
3512 int server_time_zone
= 0;
3513 NTTIME server_system_time
= 0;
3514 static const struct smb1cli_req_expected_response expected
[] = {
3516 .status
= NT_STATUS_OK
,
3517 .wct
= 0x11, /* NT1 */
3520 .status
= NT_STATUS_OK
,
3521 .wct
= 0x0D, /* LM */
3524 .status
= NT_STATUS_OK
,
3525 .wct
= 0x01, /* CORE */
3529 ZERO_STRUCT(server_challenge
);
3531 status
= smb1cli_req_recv(subreq
, state
,
3536 NULL
, /* pvwv_offset */
3539 NULL
, /* pbytes_offset */
3541 expected
, ARRAY_SIZE(expected
));
3542 TALLOC_FREE(subreq
);
3543 if (tevent_req_nterror(req
, status
)) {
3547 flags
= CVAL(inhdr
, HDR_FLG
);
3549 protnum
= SVAL(vwv
, 0);
3551 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3552 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3556 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3560 if (protnum
!= num_prots
) {
3565 conn
->protocol
= smb1cli_prots
[i
].proto
;
3569 if (conn
->protocol
== PROTOCOL_NONE
) {
3570 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3574 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3575 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3576 "and the selected protocol level doesn't support it.\n"));
3577 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3581 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3582 server_lockread
= true;
3583 server_writeunlock
= true;
3586 if (conn
->protocol
>= PROTOCOL_NT1
) {
3587 const char *client_signing
= NULL
;
3588 bool server_mandatory
= false;
3589 bool server_allowed
= false;
3590 const char *server_signing
= NULL
;
3595 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3600 server_security_mode
= CVAL(vwv
+ 1, 0);
3601 server_max_mux
= SVAL(vwv
+ 1, 1);
3602 server_max_xmit
= IVAL(vwv
+ 3, 1);
3603 server_session_key
= IVAL(vwv
+ 7, 1);
3604 server_time_zone
= SVALS(vwv
+ 15, 1);
3605 server_time_zone
*= 60;
3606 /* this time arrives in real GMT */
3607 server_system_time
= BVAL(vwv
+ 11, 1);
3608 server_capabilities
= IVAL(vwv
+ 9, 1);
3610 key_len
= CVAL(vwv
+ 16, 1);
3612 if (server_capabilities
& CAP_RAW_MODE
) {
3613 server_readbraw
= true;
3614 server_writebraw
= true;
3616 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3617 server_lockread
= true;
3620 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3621 DATA_BLOB blob1
, blob2
;
3623 if (num_bytes
< 16) {
3624 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3628 blob1
= data_blob_const(bytes
, 16);
3629 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3630 if (tevent_req_nterror(req
, status
)) {
3634 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3635 blob2
= data_blob_dup_talloc(state
, blob1
);
3636 if (blob1
.length
> 0 &&
3637 tevent_req_nomem(blob2
.data
, req
)) {
3640 server_gss_blob
= blob2
;
3642 DATA_BLOB blob1
, blob2
;
3644 if (num_bytes
< key_len
) {
3645 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3649 if (key_len
!= 0 && key_len
!= 8) {
3650 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3655 memcpy(server_challenge
, bytes
, 8);
3658 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3659 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3660 if (blob1
.length
> 0) {
3663 len
= utf16_len_n(blob1
.data
,
3667 ok
= convert_string_talloc(state
,
3675 status
= map_nt_error_from_unix_common(errno
);
3676 tevent_req_nterror(req
, status
);
3681 blob2
.data
+= blob1
.length
;
3682 blob2
.length
-= blob1
.length
;
3683 if (blob2
.length
> 0) {
3686 len
= utf16_len_n(blob1
.data
,
3690 ok
= convert_string_talloc(state
,
3698 status
= map_nt_error_from_unix_common(errno
);
3699 tevent_req_nterror(req
, status
);
3705 client_signing
= "disabled";
3706 if (conn
->allow_signing
) {
3707 client_signing
= "allowed";
3709 if (conn
->mandatory_signing
) {
3710 client_signing
= "required";
3713 server_signing
= "not supported";
3714 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3715 server_signing
= "supported";
3716 server_allowed
= true;
3718 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3719 server_signing
= "required";
3720 server_mandatory
= true;
3723 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3727 DEBUG(1,("cli_negprot: SMB signing is required, "
3728 "but client[%s] and server[%s] mismatch\n",
3729 client_signing
, server_signing
));
3730 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3734 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3740 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3744 server_security_mode
= SVAL(vwv
+ 1, 0);
3745 server_max_xmit
= SVAL(vwv
+ 2, 0);
3746 server_max_mux
= SVAL(vwv
+ 3, 0);
3747 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3748 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3749 server_session_key
= IVAL(vwv
+ 6, 0);
3750 server_time_zone
= SVALS(vwv
+ 10, 0);
3751 server_time_zone
*= 60;
3752 /* this time is converted to GMT by make_unix_date */
3753 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3754 unix_to_nt_time(&server_system_time
, t
);
3755 key_len
= SVAL(vwv
+ 11, 0);
3757 if (num_bytes
< key_len
) {
3758 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3762 if (key_len
!= 0 && key_len
!= 8) {
3763 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3768 memcpy(server_challenge
, bytes
, 8);
3771 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3772 if (blob1
.length
> 0) {
3776 len
= utf16_len_n(blob1
.data
,
3780 ok
= convert_string_talloc(state
,
3788 status
= map_nt_error_from_unix_common(errno
);
3789 tevent_req_nterror(req
, status
);
3795 /* the old core protocol */
3796 server_time_zone
= get_time_zone(time(NULL
));
3797 server_max_xmit
= 1024;
3801 if (server_max_xmit
< 1024) {
3802 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3806 if (server_max_mux
< 1) {
3807 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3812 * Now calculate the negotiated capabilities
3813 * based on the mask for:
3814 * - client only flags
3815 * - flags used in both directions
3816 * - server only flags
3818 both_capabilities
= client_capabilities
& server_capabilities
;
3819 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
3820 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
3821 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
3823 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
3825 conn
->smb1
.server
.capabilities
= server_capabilities
;
3826 conn
->smb1
.capabilities
= capabilities
;
3828 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
3829 conn
->smb1
.max_xmit
= max_xmit
;
3831 conn
->smb1
.server
.max_mux
= server_max_mux
;
3833 conn
->smb1
.server
.security_mode
= server_security_mode
;
3835 conn
->smb1
.server
.readbraw
= server_readbraw
;
3836 conn
->smb1
.server
.writebraw
= server_writebraw
;
3837 conn
->smb1
.server
.lockread
= server_lockread
;
3838 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
3840 conn
->smb1
.server
.session_key
= server_session_key
;
3842 talloc_steal(conn
, server_gss_blob
.data
);
3843 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
3844 conn
->smb1
.server
.guid
= server_guid
;
3845 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
3846 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
3847 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
3849 conn
->smb1
.server
.time_zone
= server_time_zone
;
3850 conn
->smb1
.server
.system_time
= server_system_time
;
3852 tevent_req_done(req
);
3855 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
3859 uint16_t dialect_count
= 0;
3861 buf
= state
->smb2
.dyn
;
3862 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3863 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3867 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3871 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
3875 buf
= state
->smb2
.fixed
;
3877 SSVAL(buf
, 2, dialect_count
);
3878 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
3879 SSVAL(buf
, 6, 0); /* Reserved */
3880 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
3881 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
3883 SIVAL(buf
, 8, 0); /* Capabilities */
3885 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
3889 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
3891 if (!NT_STATUS_IS_OK(status
)) {
3894 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
3896 memset(buf
+12, 0, 16); /* ClientGuid */
3898 SBVAL(buf
, 28, 0); /* ClientStartTime */
3900 return smb2cli_req_send(state
, state
->ev
,
3901 state
->conn
, SMB2_OP_NEGPROT
,
3903 state
->timeout_msec
,
3904 0xFEFF, 0, NULL
, /* pid, tid, session */
3905 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
3906 state
->smb2
.dyn
, dialect_count
*2);
3909 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
3911 struct tevent_req
*req
=
3912 tevent_req_callback_data(subreq
,
3914 struct smbXcli_negprot_state
*state
=
3915 tevent_req_data(req
,
3916 struct smbXcli_negprot_state
);
3917 struct smbXcli_conn
*conn
= state
->conn
;
3918 size_t security_offset
, security_length
;
3924 uint16_t dialect_revision
;
3925 static const struct smb2cli_req_expected_response expected
[] = {
3927 .status
= NT_STATUS_OK
,
3932 status
= smb2cli_req_recv(subreq
, state
, &iov
,
3933 expected
, ARRAY_SIZE(expected
));
3934 TALLOC_FREE(subreq
);
3935 if (tevent_req_nterror(req
, status
)) {
3939 body
= (uint8_t *)iov
[1].iov_base
;
3941 dialect_revision
= SVAL(body
, 4);
3943 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3944 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3948 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3952 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
3956 conn
->protocol
= smb2cli_prots
[i
].proto
;
3960 if (conn
->protocol
== PROTOCOL_NONE
) {
3961 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
3962 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3966 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
3967 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3971 /* make sure we do not loop forever */
3972 state
->min_protocol
= PROTOCOL_SMB2_02
;
3975 * send a SMB2 negprot, in order to negotiate
3978 subreq
= smbXcli_negprot_smb2_subreq(state
);
3979 if (tevent_req_nomem(subreq
, req
)) {
3982 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3986 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
3988 blob
= data_blob_const(body
+ 8, 16);
3989 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
3990 if (tevent_req_nterror(req
, status
)) {
3994 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
3995 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
3996 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
3997 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
3998 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
3999 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4001 security_offset
= SVAL(body
, 56);
4002 security_length
= SVAL(body
, 58);
4004 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4005 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4009 if (security_length
> iov
[2].iov_len
) {
4010 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4014 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4017 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4021 tevent_req_done(req
);
4024 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4025 TALLOC_CTX
*tmp_mem
,
4028 size_t num_pending
= talloc_array_length(conn
->pending
);
4029 struct tevent_req
*subreq
;
4030 struct smbXcli_req_state
*substate
;
4031 struct tevent_req
*req
;
4032 uint32_t protocol_magic
;
4033 size_t inbuf_len
= smb_len_nbt(inbuf
);
4035 if (num_pending
!= 1) {
4036 return NT_STATUS_INTERNAL_ERROR
;
4039 if (inbuf_len
< 4) {
4040 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4043 subreq
= conn
->pending
[0];
4044 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4045 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4047 protocol_magic
= IVAL(inbuf
, 4);
4049 switch (protocol_magic
) {
4051 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4052 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4053 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4056 if (substate
->smb2
.recv_iov
== NULL
) {
4058 * For the SMB1 negprot we have move it.
4060 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4061 substate
->smb1
.recv_iov
= NULL
;
4065 * we got an SMB2 answer, which consumed sequence number 0
4066 * so we need to use 1 as the next one
4069 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4070 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4071 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4074 DEBUG(10, ("Got non-SMB PDU\n"));
4075 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4078 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4080 return tevent_req_simple_recv_ntstatus(req
);
4083 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4084 uint32_t timeout_msec
,
4085 enum protocol_types min_protocol
,
4086 enum protocol_types max_protocol
)
4088 TALLOC_CTX
*frame
= talloc_stackframe();
4089 struct tevent_context
*ev
;
4090 struct tevent_req
*req
;
4091 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4094 if (smbXcli_conn_has_async_calls(conn
)) {
4096 * Can't use sync call while an async call is in flight
4098 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4101 ev
= tevent_context_init(frame
);
4105 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4106 min_protocol
, max_protocol
);
4110 ok
= tevent_req_poll(req
, ev
);
4112 status
= map_nt_error_from_unix_common(errno
);
4115 status
= smbXcli_negprot_recv(req
);
4121 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4123 if (session
->conn
== NULL
) {
4127 DLIST_REMOVE(session
->conn
->sessions
, session
);
4131 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4132 struct smbXcli_conn
*conn
)
4134 struct smbXcli_session
*session
;
4136 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4137 if (session
== NULL
) {
4140 talloc_set_destructor(session
, smbXcli_session_destructor
);
4142 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4143 session
->conn
= conn
;
4148 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4150 struct smbXcli_conn
*conn
= session
->conn
;
4151 uint8_t security_mode
= 0;
4154 return security_mode
;
4157 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4158 if (conn
->mandatory_signing
) {
4159 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4162 return security_mode
;
4165 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4167 return session
->smb2
.session_id
;
4170 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4172 return session
->smb2
.session_flags
;
4175 NTSTATUS
smb2cli_session_application_key(struct smbXcli_session
*session
,
4176 TALLOC_CTX
*mem_ctx
,
4179 *key
= data_blob_null
;
4181 if (session
->smb2
.application_key
.length
== 0) {
4182 return NT_STATUS_NO_USER_SESSION_KEY
;
4185 *key
= data_blob_dup_talloc(mem_ctx
, session
->smb2
.application_key
);
4186 if (key
->data
== NULL
) {
4187 return NT_STATUS_NO_MEMORY
;
4190 return NT_STATUS_OK
;
4193 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4194 uint64_t session_id
,
4195 uint16_t session_flags
)
4197 session
->smb2
.session_id
= session_id
;
4198 session
->smb2
.session_flags
= session_flags
;
4201 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4202 const DATA_BLOB _session_key
,
4203 const struct iovec
*recv_iov
)
4205 struct smbXcli_conn
*conn
= session
->conn
;
4206 uint16_t no_sign_flags
;
4207 uint8_t session_key
[16];
4211 return NT_STATUS_INVALID_PARAMETER_MIX
;
4214 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4216 if (session
->smb2
.session_flags
& no_sign_flags
) {
4217 session
->smb2
.should_sign
= false;
4218 return NT_STATUS_OK
;
4221 if (session
->smb2
.signing_key
.length
!= 0) {
4222 return NT_STATUS_INVALID_PARAMETER_MIX
;
4225 ZERO_STRUCT(session_key
);
4226 memcpy(session_key
, _session_key
.data
,
4227 MIN(_session_key
.length
, sizeof(session_key
)));
4229 session
->smb2
.signing_key
= data_blob_talloc(session
,
4231 sizeof(session_key
));
4232 if (session
->smb2
.signing_key
.data
== NULL
) {
4233 ZERO_STRUCT(session_key
);
4234 return NT_STATUS_NO_MEMORY
;
4237 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4238 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4239 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4241 smb2_key_derivation(session_key
, sizeof(session_key
),
4242 label
.data
, label
.length
,
4243 context
.data
, context
.length
,
4244 session
->smb2
.signing_key
.data
);
4247 session
->smb2
.encryption_key
= data_blob_dup_talloc(session
,
4248 session
->smb2
.signing_key
);
4249 if (session
->smb2
.encryption_key
.data
== NULL
) {
4250 ZERO_STRUCT(session_key
);
4251 return NT_STATUS_NO_MEMORY
;
4254 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4255 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4256 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4258 smb2_key_derivation(session_key
, sizeof(session_key
),
4259 label
.data
, label
.length
,
4260 context
.data
, context
.length
,
4261 session
->smb2
.encryption_key
.data
);
4264 session
->smb2
.decryption_key
= data_blob_dup_talloc(session
,
4265 session
->smb2
.signing_key
);
4266 if (session
->smb2
.decryption_key
.data
== NULL
) {
4267 ZERO_STRUCT(session_key
);
4268 return NT_STATUS_NO_MEMORY
;
4271 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4272 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4273 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4275 smb2_key_derivation(session_key
, sizeof(session_key
),
4276 label
.data
, label
.length
,
4277 context
.data
, context
.length
,
4278 session
->smb2
.decryption_key
.data
);
4281 session
->smb2
.application_key
= data_blob_dup_talloc(session
,
4282 session
->smb2
.signing_key
);
4283 if (session
->smb2
.application_key
.data
== NULL
) {
4284 ZERO_STRUCT(session_key
);
4285 return NT_STATUS_NO_MEMORY
;
4288 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4289 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4290 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4292 smb2_key_derivation(session_key
, sizeof(session_key
),
4293 label
.data
, label
.length
,
4294 context
.data
, context
.length
,
4295 session
->smb2
.application_key
.data
);
4297 ZERO_STRUCT(session_key
);
4299 session
->smb2
.channel_signing_key
= data_blob_dup_talloc(session
,
4300 session
->smb2
.signing_key
);
4301 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4302 return NT_STATUS_NO_MEMORY
;
4305 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4306 session
->conn
->protocol
,
4308 if (!NT_STATUS_IS_OK(status
)) {
4312 session
->smb2
.should_sign
= false;
4313 session
->smb2
.should_encrypt
= false;
4315 if (conn
->desire_signing
) {
4316 session
->smb2
.should_sign
= true;
4319 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4320 session
->smb2
.should_sign
= true;
4323 generate_random_buffer((uint8_t *)&session
->smb2
.channel_nonce
,
4324 sizeof(session
->smb2
.channel_nonce
));
4325 session
->smb2
.channel_next
= 1;
4327 return NT_STATUS_OK
;
4330 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4331 struct smbXcli_session
*session1
,
4332 struct smbXcli_conn
*conn
,
4333 struct smbXcli_session
**_session2
)
4335 struct smbXcli_session
*session2
;
4337 if (session1
->smb2
.signing_key
.length
== 0) {
4338 return NT_STATUS_INVALID_PARAMETER_MIX
;
4341 if (session1
->smb2
.channel_next
== 0) {
4342 return NT_STATUS_INVALID_PARAMETER_MIX
;
4346 return NT_STATUS_INVALID_PARAMETER_MIX
;
4349 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4350 if (session2
== NULL
) {
4351 return NT_STATUS_NO_MEMORY
;
4353 session2
->smb2
.session_id
= session1
->smb2
.session_id
;
4354 session2
->smb2
.session_flags
= session1
->smb2
.session_flags
;
4356 session2
->smb2
.signing_key
= data_blob_dup_talloc(session2
,
4357 session1
->smb2
.signing_key
);
4358 if (session2
->smb2
.signing_key
.data
== NULL
) {
4359 return NT_STATUS_NO_MEMORY
;
4362 session2
->smb2
.application_key
= data_blob_dup_talloc(session2
,
4363 session1
->smb2
.application_key
);
4364 if (session2
->smb2
.application_key
.data
== NULL
) {
4365 return NT_STATUS_NO_MEMORY
;
4368 session2
->smb2
.should_sign
= session1
->smb2
.should_sign
;
4369 session2
->smb2
.should_encrypt
= session1
->smb2
.should_encrypt
;
4371 session2
->smb2
.channel_nonce
= session1
->smb2
.channel_nonce
;
4372 session2
->smb2
.channel_nonce
+= session1
->smb2
.channel_next
;
4373 session1
->smb2
.channel_next
++;
4375 session2
->smb2
.encryption_key
= data_blob_dup_talloc(session2
,
4376 session1
->smb2
.encryption_key
);
4377 if (session2
->smb2
.encryption_key
.data
== NULL
) {
4378 return NT_STATUS_NO_MEMORY
;
4381 session2
->smb2
.decryption_key
= data_blob_dup_talloc(session2
,
4382 session1
->smb2
.decryption_key
);
4383 if (session2
->smb2
.decryption_key
.data
== NULL
) {
4384 return NT_STATUS_NO_MEMORY
;
4387 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4388 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4389 session2
->conn
= conn
;
4391 *_session2
= session2
;
4392 return NT_STATUS_OK
;
4395 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4396 const DATA_BLOB _channel_key
,
4397 const struct iovec
*recv_iov
)
4399 struct smbXcli_conn
*conn
= session
->conn
;
4400 uint8_t channel_key
[16];
4404 return NT_STATUS_INVALID_PARAMETER_MIX
;
4407 if (session
->smb2
.channel_signing_key
.length
!= 0) {
4408 return NT_STATUS_INVALID_PARAMETER_MIX
;
4411 ZERO_STRUCT(channel_key
);
4412 memcpy(channel_key
, _channel_key
.data
,
4413 MIN(_channel_key
.length
, sizeof(channel_key
)));
4415 session
->smb2
.channel_signing_key
= data_blob_talloc(session
,
4417 sizeof(channel_key
));
4418 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4419 ZERO_STRUCT(channel_key
);
4420 return NT_STATUS_NO_MEMORY
;
4423 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4424 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4425 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4427 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4428 label
.data
, label
.length
,
4429 context
.data
, context
.length
,
4430 session
->smb2
.channel_signing_key
.data
);
4432 ZERO_STRUCT(channel_key
);
4434 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4435 session
->conn
->protocol
,
4437 if (!NT_STATUS_IS_OK(status
)) {
4441 return NT_STATUS_OK
;