2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "../libcli/smb/smb_common.h"
29 #include "../libcli/smb/smb_seal.h"
30 #include "../libcli/smb/smb_signing.h"
31 #include "../libcli/smb/read_smb.h"
32 #include "smbXcli_base.h"
33 #include "librpc/ndr/libndr.h"
37 struct smbXcli_session
;
42 struct sockaddr_storage local_ss
;
43 struct sockaddr_storage remote_ss
;
44 const char *remote_name
;
46 struct tevent_queue
*outgoing
;
47 struct tevent_req
**pending
;
48 struct tevent_req
*read_smb_req
;
50 enum protocol_types protocol
;
53 bool mandatory_signing
;
56 * The incoming dispatch function should return:
57 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
58 * - NT_STATUS_OK, if no more processing is desired, e.g.
59 * the dispatch function called
61 * - All other return values disconnect the connection.
63 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
69 uint32_t capabilities
;
74 uint32_t capabilities
;
77 uint16_t security_mode
;
86 const char *workgroup
;
92 uint32_t capabilities
;
97 struct smb_signing_state
*signing
;
98 struct smb_trans_enc_state
*trans_enc
;
100 struct tevent_req
*read_braw_req
;
105 uint32_t capabilities
;
106 uint16_t security_mode
;
111 uint32_t capabilities
;
112 uint16_t security_mode
;
114 uint32_t max_trans_size
;
115 uint32_t max_read_size
;
116 uint32_t max_write_size
;
123 uint16_t cur_credits
;
124 uint16_t max_credits
;
127 struct smbXcli_session
*sessions
;
130 struct smbXcli_session
{
131 struct smbXcli_session
*prev
, *next
;
132 struct smbXcli_conn
*conn
;
136 uint16_t session_flags
;
137 DATA_BLOB application_key
;
138 DATA_BLOB signing_key
;
141 DATA_BLOB encryption_key
;
142 DATA_BLOB decryption_key
;
143 uint64_t channel_nonce
;
144 uint64_t channel_next
;
145 DATA_BLOB channel_signing_key
;
149 struct smbXcli_req_state
{
150 struct tevent_context
*ev
;
151 struct smbXcli_conn
*conn
;
152 struct smbXcli_session
*session
; /* maybe NULL */
154 uint8_t length_hdr
[4];
161 /* Space for the header including the wct */
162 uint8_t hdr
[HDR_VWV
];
165 * For normal requests, smb1cli_req_send chooses a mid.
166 * SecondaryV trans requests need to use the mid of the primary
167 * request, so we need a place to store it.
168 * Assume it is set if != 0.
173 uint8_t bytecount_buf
[2];
175 #define MAX_SMB_IOV 10
176 /* length_hdr, hdr, words, byte_count, buffers */
177 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
182 struct tevent_req
**chained_requests
;
185 NTSTATUS recv_status
;
186 /* always an array of 3 talloc elements */
187 struct iovec
*recv_iov
;
191 const uint8_t *fixed
;
196 uint8_t hdr
[SMB2_HDR_BODY
];
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
;
211 bool signing_skipped
;
217 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
220 * NT_STATUS_OK, means we do not notify the callers
222 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
224 while (conn
->sessions
) {
225 conn
->sessions
->conn
= NULL
;
226 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
229 if (conn
->smb1
.trans_enc
) {
230 TALLOC_FREE(conn
->smb1
.trans_enc
);
236 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
238 const char *remote_name
,
239 enum smb_signing_setting signing_state
,
240 uint32_t smb1_capabilities
,
241 struct GUID
*client_guid
,
242 uint32_t smb2_capabilities
)
244 struct smbXcli_conn
*conn
= NULL
;
246 struct sockaddr
*sa
= NULL
;
250 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
256 conn
->write_fd
= dup(fd
);
257 if (conn
->write_fd
== -1) {
261 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
262 if (conn
->remote_name
== NULL
) {
267 ss
= (void *)&conn
->local_ss
;
268 sa
= (struct sockaddr
*)ss
;
269 sa_length
= sizeof(conn
->local_ss
);
270 ret
= getsockname(fd
, sa
, &sa_length
);
274 ss
= (void *)&conn
->remote_ss
;
275 sa
= (struct sockaddr
*)ss
;
276 sa_length
= sizeof(conn
->remote_ss
);
277 ret
= getpeername(fd
, sa
, &sa_length
);
282 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
283 if (conn
->outgoing
== NULL
) {
286 conn
->pending
= NULL
;
288 conn
->protocol
= PROTOCOL_NONE
;
290 switch (signing_state
) {
291 case SMB_SIGNING_OFF
:
293 conn
->allow_signing
= false;
294 conn
->desire_signing
= false;
295 conn
->mandatory_signing
= false;
297 case SMB_SIGNING_DEFAULT
:
298 case SMB_SIGNING_IF_REQUIRED
:
299 /* if the server requires it */
300 conn
->allow_signing
= true;
301 conn
->desire_signing
= false;
302 conn
->mandatory_signing
= false;
304 case SMB_SIGNING_REQUIRED
:
306 conn
->allow_signing
= true;
307 conn
->desire_signing
= true;
308 conn
->mandatory_signing
= true;
312 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
313 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
315 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
316 conn
->smb1
.max_xmit
= 1024;
320 /* initialise signing */
321 conn
->smb1
.signing
= smb_signing_init(conn
,
323 conn
->desire_signing
,
324 conn
->mandatory_signing
);
325 if (!conn
->smb1
.signing
) {
329 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
330 if (conn
->mandatory_signing
) {
331 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
334 conn
->smb2
.client
.guid
= *client_guid
;
336 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
338 conn
->smb2
.cur_credits
= 1;
339 conn
->smb2
.max_credits
= 0;
341 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
345 if (conn
->write_fd
!= -1) {
346 close(conn
->write_fd
);
352 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
358 if (conn
->read_fd
== -1) {
365 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
367 return conn
->protocol
;
370 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
372 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
376 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
383 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
385 set_socket_options(conn
->read_fd
, options
);
388 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
390 return &conn
->local_ss
;
393 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
395 return &conn
->remote_ss
;
398 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
400 return conn
->remote_name
;
403 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
405 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
412 return conn
->smb1
.server
.max_mux
;
415 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
417 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
418 return conn
->smb2
.server
.system_time
;
421 return conn
->smb1
.server
.system_time
;
424 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
426 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
427 return &conn
->smb2
.server
.gss_blob
;
430 return &conn
->smb1
.server
.gss_blob
;
433 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
435 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
436 return &conn
->smb2
.server
.guid
;
439 return &conn
->smb1
.server
.guid
;
442 struct smbXcli_conn_samba_suicide_state
{
443 struct smbXcli_conn
*conn
;
448 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
450 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
451 struct tevent_context
*ev
,
452 struct smbXcli_conn
*conn
,
455 struct tevent_req
*req
, *subreq
;
456 struct smbXcli_conn_samba_suicide_state
*state
;
458 req
= tevent_req_create(mem_ctx
, &state
,
459 struct smbXcli_conn_samba_suicide_state
);
464 SIVAL(state
->buf
, 4, 0x74697865);
465 SCVAL(state
->buf
, 8, exitcode
);
466 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
468 state
->iov
.iov_base
= state
->buf
;
469 state
->iov
.iov_len
= sizeof(state
->buf
);
471 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
472 false, &state
->iov
, 1);
473 if (tevent_req_nomem(subreq
, req
)) {
474 return tevent_req_post(req
, ev
);
476 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
480 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
482 struct tevent_req
*req
= tevent_req_callback_data(
483 subreq
, struct tevent_req
);
484 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
485 req
, struct smbXcli_conn_samba_suicide_state
);
489 nwritten
= writev_recv(subreq
, &err
);
491 if (nwritten
== -1) {
492 NTSTATUS status
= map_nt_error_from_unix_common(err
);
493 smbXcli_conn_disconnect(state
->conn
, status
);
496 tevent_req_done(req
);
499 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
501 return tevent_req_simple_recv_ntstatus(req
);
504 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
507 TALLOC_CTX
*frame
= talloc_stackframe();
508 struct tevent_context
*ev
;
509 struct tevent_req
*req
;
510 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
513 if (smbXcli_conn_has_async_calls(conn
)) {
515 * Can't use sync call while an async call is in flight
517 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
520 ev
= tevent_context_init(frame
);
524 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
528 ok
= tevent_req_poll(req
, ev
);
530 status
= map_nt_error_from_unix_common(errno
);
533 status
= smbXcli_conn_samba_suicide_recv(req
);
539 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
541 return conn
->smb1
.capabilities
;
544 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
546 return conn
->smb1
.max_xmit
;
549 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
551 return conn
->smb1
.server
.session_key
;
554 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
556 return conn
->smb1
.server
.challenge
;
559 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
561 return conn
->smb1
.server
.security_mode
;
564 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
566 return conn
->smb1
.server
.readbraw
;
569 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
571 return conn
->smb1
.server
.writebraw
;
574 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
576 return conn
->smb1
.server
.lockread
;
579 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
581 return conn
->smb1
.server
.writeunlock
;
584 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
586 return conn
->smb1
.server
.time_zone
;
589 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
590 const DATA_BLOB user_session_key
,
591 const DATA_BLOB response
)
593 return smb_signing_activate(conn
->smb1
.signing
,
598 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
599 const uint8_t *buf
, uint32_t seqnum
)
601 return smb_signing_check_pdu(conn
->smb1
.signing
, buf
, seqnum
);
604 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
606 return smb_signing_is_active(conn
->smb1
.signing
);
609 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
610 struct smb_trans_enc_state
*es
)
612 /* Replace the old state, if any. */
613 if (conn
->smb1
.trans_enc
) {
614 TALLOC_FREE(conn
->smb1
.trans_enc
);
616 conn
->smb1
.trans_enc
= es
;
619 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
621 return common_encryption_on(conn
->smb1
.trans_enc
);
625 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
627 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
628 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
630 if (NT_STATUS_IS_OK(status
)) {
634 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
638 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
642 * Is the SMB command able to hold an AND_X successor
643 * @param[in] cmd The SMB command in question
644 * @retval Can we add a chained request after "cmd"?
646 bool smb1cli_is_andx_req(uint8_t cmd
)
666 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
668 size_t num_pending
= talloc_array_length(conn
->pending
);
674 result
= conn
->smb1
.mid
++;
675 if ((result
== 0) || (result
== 0xffff)) {
679 for (i
=0; i
<num_pending
; i
++) {
680 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
685 if (i
== num_pending
) {
691 void smbXcli_req_unset_pending(struct tevent_req
*req
)
693 struct smbXcli_req_state
*state
=
695 struct smbXcli_req_state
);
696 struct smbXcli_conn
*conn
= state
->conn
;
697 size_t num_pending
= talloc_array_length(conn
->pending
);
700 if (state
->smb1
.mid
!= 0) {
702 * This is a [nt]trans[2] request which waits
703 * for more than one reply.
708 talloc_set_destructor(req
, NULL
);
710 if (num_pending
== 1) {
712 * The pending read_smb tevent_req is a child of
713 * conn->pending. So if nothing is pending anymore, we need to
714 * delete the socket read fde.
716 TALLOC_FREE(conn
->pending
);
717 conn
->read_smb_req
= NULL
;
721 for (i
=0; i
<num_pending
; i
++) {
722 if (req
== conn
->pending
[i
]) {
726 if (i
== num_pending
) {
728 * Something's seriously broken. Just returning here is the
729 * right thing nevertheless, the point of this routine is to
730 * remove ourselves from conn->pending.
736 * Remove ourselves from the conn->pending array
738 for (; i
< (num_pending
- 1); i
++) {
739 conn
->pending
[i
] = conn
->pending
[i
+1];
743 * No NULL check here, we're shrinking by sizeof(void *), and
744 * talloc_realloc just adjusts the size for this.
746 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
751 static int smbXcli_req_destructor(struct tevent_req
*req
)
753 struct smbXcli_req_state
*state
=
755 struct smbXcli_req_state
);
758 * Make sure we really remove it from
759 * the pending array on destruction.
762 smbXcli_req_unset_pending(req
);
766 static bool smb1cli_req_cancel(struct tevent_req
*req
);
767 static bool smb2cli_req_cancel(struct tevent_req
*req
);
769 static bool smbXcli_req_cancel(struct tevent_req
*req
)
771 struct smbXcli_req_state
*state
=
773 struct smbXcli_req_state
);
775 if (!smbXcli_conn_is_connected(state
->conn
)) {
779 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
783 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
784 return smb2cli_req_cancel(req
);
787 return smb1cli_req_cancel(req
);
790 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
792 bool smbXcli_req_set_pending(struct tevent_req
*req
)
794 struct smbXcli_req_state
*state
=
796 struct smbXcli_req_state
);
797 struct smbXcli_conn
*conn
;
798 struct tevent_req
**pending
;
803 if (!smbXcli_conn_is_connected(conn
)) {
807 num_pending
= talloc_array_length(conn
->pending
);
809 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
811 if (pending
== NULL
) {
814 pending
[num_pending
] = req
;
815 conn
->pending
= pending
;
816 talloc_set_destructor(req
, smbXcli_req_destructor
);
817 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
819 if (!smbXcli_conn_receive_next(conn
)) {
821 * the caller should notify the current request
823 * And all other pending requests get notified
824 * by smbXcli_conn_disconnect().
826 smbXcli_req_unset_pending(req
);
827 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
834 static void smbXcli_conn_received(struct tevent_req
*subreq
);
836 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
838 size_t num_pending
= talloc_array_length(conn
->pending
);
839 struct tevent_req
*req
;
840 struct smbXcli_req_state
*state
;
842 if (conn
->read_smb_req
!= NULL
) {
846 if (num_pending
== 0) {
847 if (conn
->smb2
.mid
< UINT64_MAX
) {
848 /* no more pending requests, so we are done for now */
853 * If there are no more SMB2 requests possible,
854 * because we are out of message ids,
855 * we need to disconnect.
857 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
861 req
= conn
->pending
[0];
862 state
= tevent_req_data(req
, struct smbXcli_req_state
);
865 * We're the first ones, add the read_smb request that waits for the
866 * answer from the server
868 conn
->read_smb_req
= read_smb_send(conn
->pending
,
871 if (conn
->read_smb_req
== NULL
) {
874 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
878 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
880 tevent_queue_stop(conn
->outgoing
);
882 if (conn
->read_fd
!= -1) {
883 close(conn
->read_fd
);
885 if (conn
->write_fd
!= -1) {
886 close(conn
->write_fd
);
892 * Cancel all pending requests. We do not do a for-loop walking
893 * conn->pending because that array changes in
894 * smbXcli_req_unset_pending.
896 while (talloc_array_length(conn
->pending
) > 0) {
897 struct tevent_req
*req
;
898 struct smbXcli_req_state
*state
;
899 struct tevent_req
**chain
;
903 req
= conn
->pending
[0];
904 state
= tevent_req_data(req
, struct smbXcli_req_state
);
906 if (state
->smb1
.chained_requests
== NULL
) {
908 * We're dead. No point waiting for trans2
913 smbXcli_req_unset_pending(req
);
915 if (NT_STATUS_IS_OK(status
)) {
916 /* do not notify the callers */
921 * we need to defer the callback, because we may notify
922 * more then one caller.
924 tevent_req_defer_callback(req
, state
->ev
);
925 tevent_req_nterror(req
, status
);
929 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
930 num_chained
= talloc_array_length(chain
);
932 for (i
=0; i
<num_chained
; i
++) {
934 state
= tevent_req_data(req
, struct smbXcli_req_state
);
937 * We're dead. No point waiting for trans2
942 smbXcli_req_unset_pending(req
);
944 if (NT_STATUS_IS_OK(status
)) {
945 /* do not notify the callers */
950 * we need to defer the callback, because we may notify
951 * more than one caller.
953 tevent_req_defer_callback(req
, state
->ev
);
954 tevent_req_nterror(req
, status
);
961 * Fetch a smb request's mid. Only valid after the request has been sent by
962 * smb1cli_req_send().
964 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
966 struct smbXcli_req_state
*state
=
968 struct smbXcli_req_state
);
970 if (state
->smb1
.mid
!= 0) {
971 return state
->smb1
.mid
;
974 return SVAL(state
->smb1
.hdr
, HDR_MID
);
977 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
979 struct smbXcli_req_state
*state
=
981 struct smbXcli_req_state
);
983 state
->smb1
.mid
= mid
;
986 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
988 struct smbXcli_req_state
*state
=
990 struct smbXcli_req_state
);
992 return state
->smb1
.seqnum
;
995 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
997 struct smbXcli_req_state
*state
=
999 struct smbXcli_req_state
);
1001 state
->smb1
.seqnum
= seqnum
;
1004 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1008 for (i
=0; i
<count
; i
++) {
1009 result
+= iov
[i
].iov_len
;
1014 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1015 const struct iovec
*iov
,
1018 size_t len
= smbXcli_iov_len(iov
, count
);
1023 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1028 for (i
=0; i
<count
; i
++) {
1029 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1030 copied
+= iov
[i
].iov_len
;
1035 static void smb1cli_req_flags(enum protocol_types protocol
,
1036 uint32_t smb1_capabilities
,
1037 uint8_t smb_command
,
1038 uint8_t additional_flags
,
1039 uint8_t clear_flags
,
1041 uint16_t additional_flags2
,
1042 uint16_t clear_flags2
,
1046 uint16_t flags2
= 0;
1048 if (protocol
>= PROTOCOL_LANMAN1
) {
1049 flags
|= FLAG_CASELESS_PATHNAMES
;
1050 flags
|= FLAG_CANONICAL_PATHNAMES
;
1053 if (protocol
>= PROTOCOL_LANMAN2
) {
1054 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1055 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1058 if (protocol
>= PROTOCOL_NT1
) {
1059 flags2
|= FLAGS2_IS_LONG_NAME
;
1061 if (smb1_capabilities
& CAP_UNICODE
) {
1062 flags2
|= FLAGS2_UNICODE_STRINGS
;
1064 if (smb1_capabilities
& CAP_STATUS32
) {
1065 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1067 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1068 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1072 flags
|= additional_flags
;
1073 flags
&= ~clear_flags
;
1074 flags2
|= additional_flags2
;
1075 flags2
&= ~clear_flags2
;
1081 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1083 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1085 struct smbXcli_req_state
*state
=
1086 tevent_req_data(req
,
1087 struct smbXcli_req_state
);
1094 struct tevent_req
*subreq
;
1097 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1098 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1099 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1100 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1101 tid
= SVAL(state
->smb1
.hdr
, HDR_TID
);
1102 uid
= SVAL(state
->smb1
.hdr
, HDR_UID
);
1103 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1105 subreq
= smb1cli_req_create(state
, state
->ev
,
1113 0, NULL
); /* bytes */
1114 if (subreq
== NULL
) {
1117 smb1cli_req_set_mid(subreq
, mid
);
1119 status
= smb1cli_req_chain_submit(&subreq
, 1);
1120 if (!NT_STATUS_IS_OK(status
)) {
1121 TALLOC_FREE(subreq
);
1124 smb1cli_req_set_mid(subreq
, 0);
1126 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1131 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1133 /* we do not care about the result */
1134 TALLOC_FREE(subreq
);
1137 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1138 struct tevent_context
*ev
,
1139 struct smbXcli_conn
*conn
,
1140 uint8_t smb_command
,
1141 uint8_t additional_flags
,
1142 uint8_t clear_flags
,
1143 uint16_t additional_flags2
,
1144 uint16_t clear_flags2
,
1145 uint32_t timeout_msec
,
1149 uint8_t wct
, uint16_t *vwv
,
1151 struct iovec
*bytes_iov
)
1153 struct tevent_req
*req
;
1154 struct smbXcli_req_state
*state
;
1156 uint16_t flags2
= 0;
1158 if (iov_count
> MAX_SMB_IOV
) {
1160 * Should not happen :-)
1165 req
= tevent_req_create(mem_ctx
, &state
,
1166 struct smbXcli_req_state
);
1173 state
->smb1
.recv_cmd
= 0xFF;
1174 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1175 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1176 if (state
->smb1
.recv_iov
== NULL
) {
1181 smb1cli_req_flags(conn
->protocol
,
1182 conn
->smb1
.capabilities
,
1191 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1192 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1193 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1194 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1195 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1196 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1197 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1198 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1199 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1200 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1201 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1203 state
->smb1
.vwv
= vwv
;
1205 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1207 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1208 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1209 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1210 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1211 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1212 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1213 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1214 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1216 if (iov_count
!= 0) {
1217 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1218 iov_count
* sizeof(*bytes_iov
));
1220 state
->smb1
.iov_count
= iov_count
+ 4;
1222 if (timeout_msec
> 0) {
1223 struct timeval endtime
;
1225 endtime
= timeval_current_ofs_msec(timeout_msec
);
1226 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1231 switch (smb_command
) {
1235 state
->one_way
= true;
1238 state
->one_way
= true;
1239 state
->smb1
.one_way_seqnum
= true;
1243 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1244 state
->one_way
= true;
1252 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1253 struct iovec
*iov
, int iov_count
,
1255 bool one_way_seqnum
)
1257 TALLOC_CTX
*frame
= NULL
;
1261 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1262 * iovec directly. MD5Update would do that just fine.
1265 if (iov_count
< 4) {
1266 return NT_STATUS_INVALID_PARAMETER_MIX
;
1268 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1269 return NT_STATUS_INVALID_PARAMETER_MIX
;
1271 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1272 return NT_STATUS_INVALID_PARAMETER_MIX
;
1274 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1275 return NT_STATUS_INVALID_PARAMETER_MIX
;
1277 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1278 return NT_STATUS_INVALID_PARAMETER_MIX
;
1281 frame
= talloc_stackframe();
1283 buf
= smbXcli_iov_concat(frame
, iov
, iov_count
);
1285 return NT_STATUS_NO_MEMORY
;
1288 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1290 smb_signing_sign_pdu(conn
->smb1
.signing
, buf
, *seqnum
);
1291 memcpy(iov
[1].iov_base
, buf
+4, iov
[1].iov_len
);
1294 return NT_STATUS_OK
;
1297 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1298 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1299 TALLOC_CTX
*tmp_mem
,
1302 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1303 struct smbXcli_req_state
*state
,
1304 struct iovec
*iov
, int iov_count
)
1306 struct tevent_req
*subreq
;
1311 if (!smbXcli_conn_is_connected(state
->conn
)) {
1312 return NT_STATUS_CONNECTION_DISCONNECTED
;
1315 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1316 return NT_STATUS_REVISION_MISMATCH
;
1319 if (iov_count
< 4) {
1320 return NT_STATUS_INVALID_PARAMETER_MIX
;
1322 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1323 return NT_STATUS_INVALID_PARAMETER_MIX
;
1325 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1326 return NT_STATUS_INVALID_PARAMETER_MIX
;
1328 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1329 return NT_STATUS_INVALID_PARAMETER_MIX
;
1331 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1332 return NT_STATUS_INVALID_PARAMETER_MIX
;
1335 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1336 if (cmd
== SMBreadBraw
) {
1337 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1338 return NT_STATUS_INVALID_PARAMETER_MIX
;
1340 state
->conn
->smb1
.read_braw_req
= req
;
1343 if (state
->smb1
.mid
!= 0) {
1344 mid
= state
->smb1
.mid
;
1346 mid
= smb1cli_alloc_mid(state
->conn
);
1348 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1350 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1352 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1353 &state
->smb1
.seqnum
,
1354 state
->smb1
.one_way_seqnum
);
1356 if (!NT_STATUS_IS_OK(status
)) {
1361 * If we supported multiple encrytion contexts
1362 * here we'd look up based on tid.
1364 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1365 char *buf
, *enc_buf
;
1367 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1369 return NT_STATUS_NO_MEMORY
;
1371 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1372 (char *)buf
, &enc_buf
);
1374 if (!NT_STATUS_IS_OK(status
)) {
1375 DEBUG(0, ("Error in encrypting client message: %s\n",
1376 nt_errstr(status
)));
1379 buf
= (char *)talloc_memdup(state
, enc_buf
,
1380 smb_len_nbt(enc_buf
)+4);
1383 return NT_STATUS_NO_MEMORY
;
1385 iov
[0].iov_base
= (void *)buf
;
1386 iov
[0].iov_len
= talloc_get_size(buf
);
1390 if (state
->conn
->dispatch_incoming
== NULL
) {
1391 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1394 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1396 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1397 state
->conn
->write_fd
, false, iov
, iov_count
);
1398 if (subreq
== NULL
) {
1399 return NT_STATUS_NO_MEMORY
;
1401 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1402 return NT_STATUS_OK
;
1405 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1406 struct tevent_context
*ev
,
1407 struct smbXcli_conn
*conn
,
1408 uint8_t smb_command
,
1409 uint8_t additional_flags
,
1410 uint8_t clear_flags
,
1411 uint16_t additional_flags2
,
1412 uint16_t clear_flags2
,
1413 uint32_t timeout_msec
,
1417 uint8_t wct
, uint16_t *vwv
,
1419 const uint8_t *bytes
)
1421 struct tevent_req
*req
;
1425 iov
.iov_base
= discard_const_p(void, bytes
);
1426 iov
.iov_len
= num_bytes
;
1428 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1429 additional_flags
, clear_flags
,
1430 additional_flags2
, clear_flags2
,
1437 if (!tevent_req_is_in_progress(req
)) {
1438 return tevent_req_post(req
, ev
);
1440 status
= smb1cli_req_chain_submit(&req
, 1);
1441 if (tevent_req_nterror(req
, status
)) {
1442 return tevent_req_post(req
, ev
);
1447 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1449 struct tevent_req
*req
=
1450 tevent_req_callback_data(subreq
,
1452 struct smbXcli_req_state
*state
=
1453 tevent_req_data(req
,
1454 struct smbXcli_req_state
);
1458 nwritten
= writev_recv(subreq
, &err
);
1459 TALLOC_FREE(subreq
);
1460 if (nwritten
== -1) {
1461 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1462 smbXcli_conn_disconnect(state
->conn
, status
);
1466 if (state
->one_way
) {
1467 state
->inbuf
= NULL
;
1468 tevent_req_done(req
);
1472 if (!smbXcli_req_set_pending(req
)) {
1473 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1478 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1480 struct smbXcli_conn
*conn
=
1481 tevent_req_callback_data(subreq
,
1482 struct smbXcli_conn
);
1483 TALLOC_CTX
*frame
= talloc_stackframe();
1489 if (subreq
!= conn
->read_smb_req
) {
1490 DEBUG(1, ("Internal error: cli_smb_received called with "
1491 "unexpected subreq\n"));
1492 status
= NT_STATUS_INTERNAL_ERROR
;
1493 smbXcli_conn_disconnect(conn
, status
);
1497 conn
->read_smb_req
= NULL
;
1499 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1500 TALLOC_FREE(subreq
);
1501 if (received
== -1) {
1502 status
= map_nt_error_from_unix_common(err
);
1503 smbXcli_conn_disconnect(conn
, status
);
1508 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1510 if (NT_STATUS_IS_OK(status
)) {
1512 * We should not do any more processing
1513 * as the dispatch function called
1514 * tevent_req_done().
1517 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1519 * We got an error, so notify all pending requests
1521 smbXcli_conn_disconnect(conn
, status
);
1526 * We got NT_STATUS_RETRY, so we may ask for a
1527 * next incoming pdu.
1529 if (!smbXcli_conn_receive_next(conn
)) {
1530 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1534 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1535 struct iovec
**piov
, int *pnum_iov
)
1546 buflen
= smb_len_nbt(buf
);
1549 hdr
= buf
+ NBT_HDR_SIZE
;
1551 if (buflen
< MIN_SMB_SIZE
) {
1552 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1556 * This returns iovec elements in the following order:
1571 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1573 return NT_STATUS_NO_MEMORY
;
1575 iov
[0].iov_base
= hdr
;
1576 iov
[0].iov_len
= HDR_WCT
;
1579 cmd
= CVAL(hdr
, HDR_COM
);
1583 size_t len
= buflen
- taken
;
1585 struct iovec
*iov_tmp
;
1592 * we need at least WCT and BCC
1594 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1596 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1597 __location__
, (int)len
, (int)needed
));
1602 * Now we check if the specified words are there
1604 wct
= CVAL(hdr
, wct_ofs
);
1605 needed
+= wct
* sizeof(uint16_t);
1607 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1608 __location__
, (int)len
, (int)needed
));
1613 * Now we check if the specified bytes are there
1615 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1616 bcc
= SVAL(hdr
, bcc_ofs
);
1617 needed
+= bcc
* sizeof(uint8_t);
1619 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1620 __location__
, (int)len
, (int)needed
));
1625 * we allocate 2 iovec structures for words and bytes
1627 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1629 if (iov_tmp
== NULL
) {
1631 return NT_STATUS_NO_MEMORY
;
1634 cur
= &iov
[num_iov
];
1637 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1638 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1639 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1640 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1644 if (!smb1cli_is_andx_req(cmd
)) {
1646 * If the current command does not have AndX chanining
1652 if (wct
== 0 && bcc
== 0) {
1654 * An empty response also ends the chain,
1655 * most likely with an error.
1661 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1662 __location__
, (int)wct
, (int)cmd
));
1665 cmd
= CVAL(cur
[0].iov_base
, 0);
1668 * If it is the end of the chain we are also done.
1672 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1674 if (wct_ofs
< taken
) {
1675 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1677 if (wct_ofs
> buflen
) {
1678 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1682 * we consumed everything up to the start of the next
1688 remaining
= buflen
- taken
;
1690 if (remaining
> 0 && num_iov
>= 3) {
1692 * The last DATA block gets the remaining
1693 * bytes, this is needed to support
1694 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1696 iov
[num_iov
-1].iov_len
+= remaining
;
1700 *pnum_iov
= num_iov
;
1701 return NT_STATUS_OK
;
1705 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1708 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1709 TALLOC_CTX
*tmp_mem
,
1712 struct tevent_req
*req
;
1713 struct smbXcli_req_state
*state
;
1720 const uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1721 struct iovec
*iov
= NULL
;
1723 struct tevent_req
**chain
= NULL
;
1724 size_t num_chained
= 0;
1725 size_t num_responses
= 0;
1727 if (conn
->smb1
.read_braw_req
!= NULL
) {
1728 req
= conn
->smb1
.read_braw_req
;
1729 conn
->smb1
.read_braw_req
= NULL
;
1730 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1732 smbXcli_req_unset_pending(req
);
1734 if (state
->smb1
.recv_iov
== NULL
) {
1736 * For requests with more than
1737 * one response, we have to readd the
1740 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1743 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1744 return NT_STATUS_OK
;
1748 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inbuf
+ NBT_HDR_SIZE
);
1749 state
->smb1
.recv_iov
[0].iov_len
= smb_len_nbt(inbuf
);
1750 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1751 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1753 state
->smb1
.recv_cmd
= SMBreadBraw
;
1754 state
->smb1
.recv_status
= NT_STATUS_OK
;
1755 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1757 tevent_req_done(req
);
1758 return NT_STATUS_OK
;
1761 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1762 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1763 DEBUG(10, ("Got non-SMB PDU\n"));
1764 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1768 * If we supported multiple encrytion contexts
1769 * here we'd look up based on tid.
1771 if (common_encryption_on(conn
->smb1
.trans_enc
)
1772 && (CVAL(inbuf
, 0) == 0)) {
1773 uint16_t enc_ctx_num
;
1775 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1776 if (!NT_STATUS_IS_OK(status
)) {
1777 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1778 nt_errstr(status
)));
1782 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1783 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1785 conn
->smb1
.trans_enc
->enc_ctx_num
));
1786 return NT_STATUS_INVALID_HANDLE
;
1789 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1791 if (!NT_STATUS_IS_OK(status
)) {
1792 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1793 nt_errstr(status
)));
1798 mid
= SVAL(inhdr
, HDR_MID
);
1799 num_pending
= talloc_array_length(conn
->pending
);
1801 for (i
=0; i
<num_pending
; i
++) {
1802 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1806 if (i
== num_pending
) {
1807 /* Dump unexpected reply */
1808 return NT_STATUS_RETRY
;
1811 oplock_break
= false;
1813 if (mid
== 0xffff) {
1815 * Paranoia checks that this is really an oplock break request.
1817 oplock_break
= (smb_len_nbt(inbuf
) == 51); /* hdr + 8 words */
1818 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1819 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1820 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1821 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1823 if (!oplock_break
) {
1824 /* Dump unexpected reply */
1825 return NT_STATUS_RETRY
;
1829 req
= conn
->pending
[i
];
1830 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1832 if (!oplock_break
/* oplock breaks are not signed */
1833 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1834 inbuf
, state
->smb1
.seqnum
+1)) {
1835 DEBUG(10, ("cli_check_sign_mac failed\n"));
1836 return NT_STATUS_ACCESS_DENIED
;
1839 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1841 if (!NT_STATUS_IS_OK(status
)) {
1842 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1843 nt_errstr(status
)));
1847 cmd
= CVAL(inhdr
, HDR_COM
);
1848 status
= smb1cli_pull_raw_error(inhdr
);
1850 if (state
->smb1
.chained_requests
== NULL
) {
1852 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1855 smbXcli_req_unset_pending(req
);
1857 if (state
->smb1
.recv_iov
== NULL
) {
1859 * For requests with more than
1860 * one response, we have to readd the
1863 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1866 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1867 return NT_STATUS_OK
;
1871 state
->smb1
.recv_cmd
= cmd
;
1872 state
->smb1
.recv_status
= status
;
1873 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1875 state
->smb1
.recv_iov
[0] = iov
[0];
1876 state
->smb1
.recv_iov
[1] = iov
[1];
1877 state
->smb1
.recv_iov
[2] = iov
[2];
1879 if (talloc_array_length(conn
->pending
) == 0) {
1880 tevent_req_done(req
);
1881 return NT_STATUS_OK
;
1884 tevent_req_defer_callback(req
, state
->ev
);
1885 tevent_req_done(req
);
1886 return NT_STATUS_RETRY
;
1889 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1890 num_chained
= talloc_array_length(chain
);
1891 num_responses
= (num_iov
- 1)/2;
1893 if (num_responses
> num_chained
) {
1894 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1897 for (i
=0; i
<num_chained
; i
++) {
1898 size_t iov_idx
= 1 + (i
*2);
1899 struct iovec
*cur
= &iov
[iov_idx
];
1903 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1905 smbXcli_req_unset_pending(req
);
1908 * as we finish multiple requests here
1909 * we need to defer the callbacks as
1910 * they could destroy our current stack state.
1912 tevent_req_defer_callback(req
, state
->ev
);
1914 if (i
>= num_responses
) {
1915 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1919 if (state
->smb1
.recv_iov
== NULL
) {
1921 * For requests with more than
1922 * one response, we have to readd the
1925 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1928 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1933 state
->smb1
.recv_cmd
= cmd
;
1935 if (i
== (num_responses
- 1)) {
1937 * The last request in the chain gets the status
1939 state
->smb1
.recv_status
= status
;
1941 cmd
= CVAL(cur
[0].iov_base
, 0);
1942 state
->smb1
.recv_status
= NT_STATUS_OK
;
1945 state
->inbuf
= inbuf
;
1948 * Note: here we use talloc_reference() in a way
1949 * that does not expose it to the caller.
1951 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
1952 if (tevent_req_nomem(inbuf_ref
, req
)) {
1956 /* copy the related buffers */
1957 state
->smb1
.recv_iov
[0] = iov
[0];
1958 state
->smb1
.recv_iov
[1] = cur
[0];
1959 state
->smb1
.recv_iov
[2] = cur
[1];
1961 tevent_req_done(req
);
1964 return NT_STATUS_RETRY
;
1967 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
1968 TALLOC_CTX
*mem_ctx
,
1969 struct iovec
**piov
,
1973 uint32_t *pvwv_offset
,
1974 uint32_t *pnum_bytes
,
1976 uint32_t *pbytes_offset
,
1978 const struct smb1cli_req_expected_response
*expected
,
1979 size_t num_expected
)
1981 struct smbXcli_req_state
*state
=
1982 tevent_req_data(req
,
1983 struct smbXcli_req_state
);
1984 NTSTATUS status
= NT_STATUS_OK
;
1985 struct iovec
*recv_iov
= NULL
;
1986 uint8_t *hdr
= NULL
;
1988 uint32_t vwv_offset
= 0;
1989 uint16_t *vwv
= NULL
;
1990 uint32_t num_bytes
= 0;
1991 uint32_t bytes_offset
= 0;
1992 uint8_t *bytes
= NULL
;
1994 bool found_status
= false;
1995 bool found_size
= false;
2009 if (pvwv_offset
!= NULL
) {
2012 if (pnum_bytes
!= NULL
) {
2015 if (pbytes
!= NULL
) {
2018 if (pbytes_offset
!= NULL
) {
2021 if (pinbuf
!= NULL
) {
2025 if (state
->inbuf
!= NULL
) {
2026 recv_iov
= state
->smb1
.recv_iov
;
2027 state
->smb1
.recv_iov
= NULL
;
2028 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2029 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2030 wct
= recv_iov
[1].iov_len
/2;
2031 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2032 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2033 num_bytes
= recv_iov
[2].iov_len
;
2034 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2035 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2039 if (tevent_req_is_nterror(req
, &status
)) {
2040 for (i
=0; i
< num_expected
; i
++) {
2041 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2042 found_status
= true;
2048 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2054 if (num_expected
== 0) {
2055 found_status
= true;
2059 status
= state
->smb1
.recv_status
;
2061 for (i
=0; i
< num_expected
; i
++) {
2062 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2066 found_status
= true;
2067 if (expected
[i
].wct
== 0) {
2072 if (expected
[i
].wct
== wct
) {
2078 if (!found_status
) {
2083 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2087 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2099 if (pvwv_offset
!= NULL
) {
2100 *pvwv_offset
= vwv_offset
;
2102 if (pnum_bytes
!= NULL
) {
2103 *pnum_bytes
= num_bytes
;
2105 if (pbytes
!= NULL
) {
2108 if (pbytes_offset
!= NULL
) {
2109 *pbytes_offset
= bytes_offset
;
2111 if (pinbuf
!= NULL
) {
2112 *pinbuf
= state
->inbuf
;
2118 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2125 for (i
=0; i
<num_reqs
; i
++) {
2126 struct smbXcli_req_state
*state
;
2127 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2128 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2129 state
->smb1
.iov_count
-2);
2130 wct_ofs
= (wct_ofs
+ 3) & ~3;
2135 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2137 struct smbXcli_req_state
*first_state
=
2138 tevent_req_data(reqs
[0],
2139 struct smbXcli_req_state
);
2140 struct smbXcli_req_state
*state
;
2142 size_t chain_padding
= 0;
2144 struct iovec
*iov
= NULL
;
2145 struct iovec
*this_iov
;
2149 if (num_reqs
== 1) {
2150 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2151 first_state
->smb1
.iov
,
2152 first_state
->smb1
.iov_count
);
2156 for (i
=0; i
<num_reqs
; i
++) {
2157 if (!tevent_req_is_in_progress(reqs
[i
])) {
2158 return NT_STATUS_INTERNAL_ERROR
;
2161 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2163 if (state
->smb1
.iov_count
< 4) {
2164 return NT_STATUS_INVALID_PARAMETER_MIX
;
2169 * The NBT and SMB header
2182 iovlen
+= state
->smb1
.iov_count
- 2;
2185 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2187 return NT_STATUS_NO_MEMORY
;
2190 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2191 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2192 if (first_state
->smb1
.chained_requests
== NULL
) {
2194 return NT_STATUS_NO_MEMORY
;
2197 wct_offset
= HDR_WCT
;
2200 for (i
=0; i
<num_reqs
; i
++) {
2201 size_t next_padding
= 0;
2204 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2206 if (i
< num_reqs
-1) {
2207 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2208 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2210 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2211 return NT_STATUS_INVALID_PARAMETER_MIX
;
2215 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2216 state
->smb1
.iov_count
-2) + 1;
2217 if ((wct_offset
% 4) != 0) {
2218 next_padding
= 4 - (wct_offset
% 4);
2220 wct_offset
+= next_padding
;
2221 vwv
= state
->smb1
.vwv
;
2223 if (i
< num_reqs
-1) {
2224 struct smbXcli_req_state
*next_state
=
2225 tevent_req_data(reqs
[i
+1],
2226 struct smbXcli_req_state
);
2227 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2229 SSVAL(vwv
+1, 0, wct_offset
);
2230 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2231 /* properly end the chain */
2232 SCVAL(vwv
+0, 0, 0xff);
2233 SCVAL(vwv
+0, 1, 0xff);
2239 * The NBT and SMB header
2241 this_iov
[0] = state
->smb1
.iov
[0];
2242 this_iov
[1] = state
->smb1
.iov
[1];
2246 * This one is a bit subtle. We have to add
2247 * chain_padding bytes between the requests, and we
2248 * have to also include the wct field of the
2249 * subsequent requests. We use the subsequent header
2250 * for the padding, it contains the wct field in its
2253 this_iov
[0].iov_len
= chain_padding
+1;
2254 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2255 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2256 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2261 * copy the words and bytes
2263 memcpy(this_iov
, state
->smb1
.iov
+2,
2264 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2265 this_iov
+= state
->smb1
.iov_count
- 2;
2266 chain_padding
= next_padding
;
2269 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2270 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2272 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2273 return NT_STATUS_INVALID_PARAMETER_MIX
;
2276 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2277 if (!NT_STATUS_IS_OK(status
)) {
2279 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2283 return NT_STATUS_OK
;
2286 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2288 return ((tevent_queue_length(conn
->outgoing
) != 0)
2289 || (talloc_array_length(conn
->pending
) != 0));
2292 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2294 return conn
->smb2
.server
.capabilities
;
2297 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2299 return conn
->smb2
.server
.security_mode
;
2302 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2304 return conn
->smb2
.server
.max_trans_size
;
2307 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2309 return conn
->smb2
.server
.max_read_size
;
2312 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2314 return conn
->smb2
.server
.max_write_size
;
2317 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2318 uint16_t max_credits
)
2320 conn
->smb2
.max_credits
= max_credits
;
2323 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2325 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2327 struct smbXcli_req_state
*state
=
2328 tevent_req_data(req
,
2329 struct smbXcli_req_state
);
2330 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2331 uint32_t pid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_PID
);
2332 uint32_t tid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_TID
);
2333 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2334 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2335 struct smbXcli_session
*session
= state
->session
;
2336 uint8_t *fixed
= state
->smb2
.pad
;
2337 uint16_t fixed_len
= 4;
2338 struct tevent_req
*subreq
;
2339 struct smbXcli_req_state
*substate
;
2342 SSVAL(fixed
, 0, 0x04);
2345 subreq
= smb2cli_req_create(state
, state
->ev
,
2353 if (subreq
== NULL
) {
2356 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2358 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2362 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2363 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2364 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2365 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2366 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2368 status
= smb2cli_req_compound_submit(&subreq
, 1);
2369 if (!NT_STATUS_IS_OK(status
)) {
2370 TALLOC_FREE(subreq
);
2374 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2379 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2381 /* we do not care about the result */
2382 TALLOC_FREE(subreq
);
2385 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2386 struct tevent_context
*ev
,
2387 struct smbXcli_conn
*conn
,
2389 uint32_t additional_flags
,
2390 uint32_t clear_flags
,
2391 uint32_t timeout_msec
,
2394 struct smbXcli_session
*session
,
2395 const uint8_t *fixed
,
2400 struct tevent_req
*req
;
2401 struct smbXcli_req_state
*state
;
2405 req
= tevent_req_create(mem_ctx
, &state
,
2406 struct smbXcli_req_state
);
2413 state
->session
= session
;
2416 uid
= session
->smb2
.session_id
;
2418 state
->smb2
.should_sign
= session
->smb2
.should_sign
;
2420 if (cmd
== SMB2_OP_SESSSETUP
&&
2421 session
->smb2
.signing_key
.length
!= 0) {
2422 state
->smb2
.should_sign
= true;
2426 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2427 if (state
->smb2
.recv_iov
== NULL
) {
2432 flags
|= additional_flags
;
2433 flags
&= ~clear_flags
;
2435 state
->smb2
.fixed
= fixed
;
2436 state
->smb2
.fixed_len
= fixed_len
;
2437 state
->smb2
.dyn
= dyn
;
2438 state
->smb2
.dyn_len
= dyn_len
;
2440 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2441 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2442 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2443 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2444 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2445 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2446 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2449 case SMB2_OP_CANCEL
:
2450 state
->one_way
= true;
2454 * If this is a dummy request, it will have
2455 * UINT64_MAX as message id.
2456 * If we send on break acknowledgement,
2457 * this gets overwritten later.
2459 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2463 if (timeout_msec
> 0) {
2464 struct timeval endtime
;
2466 endtime
= timeval_current_ofs_msec(timeout_msec
);
2467 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2475 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2477 struct smbXcli_req_state
*state
=
2478 tevent_req_data(req
,
2479 struct smbXcli_req_state
);
2481 state
->smb2
.notify_async
= true;
2484 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2485 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2486 TALLOC_CTX
*tmp_mem
,
2489 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2492 struct smbXcli_req_state
*state
;
2493 struct tevent_req
*subreq
;
2495 int i
, num_iov
, nbt_len
;
2498 * 1 for the nbt length
2499 * per request: HDR, fixed, dyn, padding
2500 * -1 because the last one does not need padding
2503 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 4*num_reqs
- 1);
2505 return NT_STATUS_NO_MEMORY
;
2511 for (i
=0; i
<num_reqs
; i
++) {
2520 const DATA_BLOB
*signing_key
= NULL
;
2522 if (!tevent_req_is_in_progress(reqs
[i
])) {
2523 return NT_STATUS_INTERNAL_ERROR
;
2526 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2528 if (!smbXcli_conn_is_connected(state
->conn
)) {
2529 return NT_STATUS_CONNECTION_DISCONNECTED
;
2532 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2533 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2534 return NT_STATUS_REVISION_MISMATCH
;
2537 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2538 if (opcode
== SMB2_OP_CANCEL
) {
2542 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2544 return NT_STATUS_CONNECTION_ABORTED
;
2547 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2548 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2553 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2555 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2556 if (avail
< charge
) {
2557 return NT_STATUS_INTERNAL_ERROR
;
2561 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2562 credits
= state
->conn
->smb2
.max_credits
-
2563 state
->conn
->smb2
.cur_credits
;
2565 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2569 mid
= state
->conn
->smb2
.mid
;
2570 state
->conn
->smb2
.mid
+= charge
;
2571 state
->conn
->smb2
.cur_credits
-= charge
;
2573 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2574 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2576 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2577 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2580 if (state
->session
) {
2582 * We prefer the channel signing key if it is
2585 if (state
->smb2
.should_sign
) {
2586 signing_key
= &state
->session
->smb2
.channel_signing_key
;
2590 * If it is a channel binding, we already have the main
2591 * signing key and try that one.
2593 if (signing_key
&& signing_key
->length
== 0) {
2594 signing_key
= &state
->session
->smb2
.signing_key
;
2598 * If we do not have any session key yet, we skip the
2599 * signing of SMB2_OP_SESSSETUP requests.
2601 if (signing_key
&& signing_key
->length
== 0) {
2607 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2608 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2611 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2612 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2615 if (state
->smb2
.dyn
!= NULL
) {
2616 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2617 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2621 reqlen
= sizeof(state
->smb2
.hdr
);
2622 reqlen
+= state
->smb2
.fixed_len
;
2623 reqlen
+= state
->smb2
.dyn_len
;
2625 if (i
< num_reqs
-1) {
2626 if ((reqlen
% 8) > 0) {
2627 uint8_t pad
= 8 - (reqlen
% 8);
2628 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2629 iov
[num_iov
].iov_len
= pad
;
2633 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2639 status
= smb2_signing_sign_pdu(*signing_key
,
2640 state
->session
->conn
->protocol
,
2641 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2642 if (!NT_STATUS_IS_OK(status
)) {
2649 ret
= smbXcli_req_set_pending(reqs
[i
]);
2651 return NT_STATUS_NO_MEMORY
;
2655 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2656 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2657 iov
[0].iov_base
= state
->length_hdr
;
2658 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2660 if (state
->conn
->dispatch_incoming
== NULL
) {
2661 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2664 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2665 state
->conn
->write_fd
, false, iov
, num_iov
);
2666 if (subreq
== NULL
) {
2667 return NT_STATUS_NO_MEMORY
;
2669 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2670 return NT_STATUS_OK
;
2673 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2675 struct smbXcli_req_state
*state
=
2676 tevent_req_data(req
,
2677 struct smbXcli_req_state
);
2679 state
->smb2
.credit_charge
= charge
;
2682 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2683 struct tevent_context
*ev
,
2684 struct smbXcli_conn
*conn
,
2686 uint32_t additional_flags
,
2687 uint32_t clear_flags
,
2688 uint32_t timeout_msec
,
2691 struct smbXcli_session
*session
,
2692 const uint8_t *fixed
,
2697 struct tevent_req
*req
;
2700 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2701 additional_flags
, clear_flags
,
2704 fixed
, fixed_len
, dyn
, dyn_len
);
2708 if (!tevent_req_is_in_progress(req
)) {
2709 return tevent_req_post(req
, ev
);
2711 status
= smb2cli_req_compound_submit(&req
, 1);
2712 if (tevent_req_nterror(req
, status
)) {
2713 return tevent_req_post(req
, ev
);
2718 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2720 struct tevent_req
*req
=
2721 tevent_req_callback_data(subreq
,
2723 struct smbXcli_req_state
*state
=
2724 tevent_req_data(req
,
2725 struct smbXcli_req_state
);
2729 nwritten
= writev_recv(subreq
, &err
);
2730 TALLOC_FREE(subreq
);
2731 if (nwritten
== -1) {
2732 /* here, we need to notify all pending requests */
2733 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2734 smbXcli_conn_disconnect(state
->conn
, status
);
2739 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2742 TALLOC_CTX
*mem_ctx
,
2743 struct iovec
**piov
, int *pnum_iov
)
2748 uint8_t *first_hdr
= buf
;
2750 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2752 return NT_STATUS_NO_MEMORY
;
2755 while (taken
< buflen
) {
2758 size_t len
= buflen
- taken
;
2759 uint8_t *hdr
= first_hdr
+ taken
;
2762 size_t next_command_ofs
;
2764 struct iovec
*iov_tmp
;
2767 DEBUG(10, ("%d bytes left, expected at least %d\n",
2771 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2772 struct smbXcli_session
*s
;
2774 struct iovec tf_iov
[2];
2777 if (len
< SMB2_TF_HDR_SIZE
) {
2778 DEBUG(10, ("%d bytes left, expected at least %d\n",
2779 (int)len
, SMB2_TF_HDR_SIZE
));
2783 tf_len
= SMB2_TF_HDR_SIZE
;
2786 hdr
= first_hdr
+ taken
;
2787 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
2788 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
2791 for (; s
; s
= s
->next
) {
2792 if (s
->smb2
.session_id
!= uid
) {
2799 DEBUG(10, ("unknown session_id %llu\n",
2800 (unsigned long long)uid
));
2804 tf_iov
[0].iov_base
= (void *)tf
;
2805 tf_iov
[0].iov_len
= tf_len
;
2806 tf_iov
[1].iov_base
= (void *)hdr
;
2807 tf_iov
[1].iov_len
= len
;
2809 status
= smb2_signing_decrypt_pdu(s
->smb2
.decryption_key
,
2812 if (!NT_STATUS_IS_OK(status
)) {
2819 * We need the header plus the body length field
2822 if (len
< SMB2_HDR_BODY
+ 2) {
2823 DEBUG(10, ("%d bytes left, expected at least %d\n",
2824 (int)len
, SMB2_HDR_BODY
));
2827 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
2828 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
2832 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
2833 DEBUG(10, ("Got HDR len %d, expected %d\n",
2834 SVAL(hdr
, 4), SMB2_HDR_BODY
));
2839 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
2840 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
2842 if (next_command_ofs
!= 0) {
2843 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
2846 if (next_command_ofs
> full_size
) {
2849 if (tf
&& next_command_ofs
< len
) {
2852 full_size
= next_command_ofs
;
2854 if (body_size
< 2) {
2857 body_size
&= 0xfffe;
2859 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
2863 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2865 if (iov_tmp
== NULL
) {
2867 return NT_STATUS_NO_MEMORY
;
2870 cur
= &iov
[num_iov
];
2873 cur
[0].iov_base
= tf
;
2874 cur
[0].iov_len
= tf_len
;
2875 cur
[1].iov_base
= hdr
;
2876 cur
[1].iov_len
= SMB2_HDR_BODY
;
2877 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
2878 cur
[2].iov_len
= body_size
;
2879 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
2880 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
2886 *pnum_iov
= num_iov
;
2887 return NT_STATUS_OK
;
2891 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2894 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
2897 size_t num_pending
= talloc_array_length(conn
->pending
);
2900 for (i
=0; i
<num_pending
; i
++) {
2901 struct tevent_req
*req
= conn
->pending
[i
];
2902 struct smbXcli_req_state
*state
=
2903 tevent_req_data(req
,
2904 struct smbXcli_req_state
);
2906 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
2913 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2914 TALLOC_CTX
*tmp_mem
,
2917 struct tevent_req
*req
;
2918 struct smbXcli_req_state
*state
= NULL
;
2923 struct smbXcli_session
*last_session
= NULL
;
2924 size_t inbuf_len
= smb_len_tcp(inbuf
);
2926 status
= smb2cli_inbuf_parse_compound(conn
,
2927 inbuf
+ NBT_HDR_SIZE
,
2931 if (!NT_STATUS_IS_OK(status
)) {
2935 for (i
=0; i
<num_iov
; i
+=4) {
2936 uint8_t *inbuf_ref
= NULL
;
2937 struct iovec
*cur
= &iov
[i
];
2938 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
2939 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
2940 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
2941 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
2942 uint16_t req_opcode
;
2944 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
2945 uint32_t new_credits
;
2946 struct smbXcli_session
*session
= NULL
;
2947 const DATA_BLOB
*signing_key
= NULL
;
2949 new_credits
= conn
->smb2
.cur_credits
;
2950 new_credits
+= credits
;
2951 if (new_credits
> UINT16_MAX
) {
2952 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2954 conn
->smb2
.cur_credits
+= credits
;
2956 req
= smb2cli_conn_find_pending(conn
, mid
);
2958 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2960 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2962 state
->smb2
.got_async
= false;
2964 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2965 if (opcode
!= req_opcode
) {
2966 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2968 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2970 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
2971 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2974 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
2975 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
2976 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
2977 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
2980 * async interim responses are not signed,
2981 * even if the SMB2_HDR_FLAG_SIGNED flag
2984 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
2985 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
2986 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
2988 if (state
->smb2
.notify_async
) {
2989 state
->smb2
.got_async
= true;
2990 tevent_req_defer_callback(req
, state
->ev
);
2991 tevent_req_notify_callback(req
);
2996 session
= state
->session
;
2997 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
2998 session
= last_session
;
3000 last_session
= session
;
3002 if (state
->smb2
.should_sign
) {
3003 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3004 return NT_STATUS_ACCESS_DENIED
;
3008 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3009 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3011 if (session
== NULL
) {
3012 struct smbXcli_session
*s
;
3014 s
= state
->conn
->sessions
;
3015 for (; s
; s
= s
->next
) {
3016 if (s
->smb2
.session_id
!= uid
) {
3025 if (session
== NULL
) {
3026 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3029 last_session
= session
;
3030 signing_key
= &session
->smb2
.channel_signing_key
;
3033 if (opcode
== SMB2_OP_SESSSETUP
) {
3035 * We prefer the channel signing key, if it is
3038 * If we do not have a channel signing key yet,
3039 * we try the main signing key, if it is not
3040 * the final response.
3042 if (signing_key
&& signing_key
->length
== 0 &&
3043 !NT_STATUS_IS_OK(status
)) {
3044 signing_key
= &session
->smb2
.signing_key
;
3047 if (signing_key
&& signing_key
->length
== 0) {
3049 * If we do not have a session key to
3050 * verify the signature, we defer the
3051 * signing check to the caller.
3053 * The caller gets NT_STATUS_OK, it
3055 * smb2cli_session_set_session_key()
3057 * smb2cli_session_set_channel_key()
3058 * which will check the signature
3059 * with the channel signing key.
3065 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3067 * if the server returns NT_STATUS_USER_SESSION_DELETED
3068 * the response is not signed and we should
3069 * propagate the NT_STATUS_USER_SESSION_DELETED
3070 * status to the caller.
3075 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3076 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3077 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3079 * if the server returns
3080 * NT_STATUS_NETWORK_NAME_DELETED
3081 * NT_STATUS_FILE_CLOSED
3082 * NT_STATUS_INVALID_PARAMETER
3083 * the response might not be signed
3084 * as this happens before the signing checks.
3086 * If server echos the signature (or all zeros)
3087 * we should report the status from the server
3093 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3094 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3097 state
->smb2
.signing_skipped
= true;
3103 static const uint8_t zeros
[16];
3105 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3109 state
->smb2
.signing_skipped
= true;
3116 status
= smb2_signing_check_pdu(*signing_key
,
3117 state
->conn
->protocol
,
3119 if (!NT_STATUS_IS_OK(status
)) {
3121 * If the signing check fails, we disconnect
3128 smbXcli_req_unset_pending(req
);
3131 * There might be more than one response
3132 * we need to defer the notifications
3134 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3139 tevent_req_defer_callback(req
, state
->ev
);
3143 * Note: here we use talloc_reference() in a way
3144 * that does not expose it to the caller.
3146 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3147 if (tevent_req_nomem(inbuf_ref
, req
)) {
3151 /* copy the related buffers */
3152 state
->smb2
.recv_iov
[0] = cur
[1];
3153 state
->smb2
.recv_iov
[1] = cur
[2];
3154 state
->smb2
.recv_iov
[2] = cur
[3];
3156 tevent_req_done(req
);
3160 return NT_STATUS_RETRY
;
3163 return NT_STATUS_OK
;
3166 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3167 struct iovec
**piov
,
3168 const struct smb2cli_req_expected_response
*expected
,
3169 size_t num_expected
)
3171 struct smbXcli_req_state
*state
=
3172 tevent_req_data(req
,
3173 struct smbXcli_req_state
);
3176 bool found_status
= false;
3177 bool found_size
= false;
3184 if (state
->smb2
.got_async
) {
3185 return STATUS_PENDING
;
3188 if (tevent_req_is_nterror(req
, &status
)) {
3189 for (i
=0; i
< num_expected
; i
++) {
3190 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3191 found_status
= true;
3197 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3203 if (num_expected
== 0) {
3204 found_status
= true;
3208 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3209 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3211 for (i
=0; i
< num_expected
; i
++) {
3212 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3216 found_status
= true;
3217 if (expected
[i
].body_size
== 0) {
3222 if (expected
[i
].body_size
== body_size
) {
3228 if (!found_status
) {
3232 if (state
->smb2
.signing_skipped
) {
3233 if (num_expected
> 0) {
3234 return NT_STATUS_ACCESS_DENIED
;
3236 if (!NT_STATUS_IS_ERR(status
)) {
3237 return NT_STATUS_ACCESS_DENIED
;
3242 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3246 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3252 static const struct {
3253 enum protocol_types proto
;
3254 const char *smb1_name
;
3255 } smb1cli_prots
[] = {
3256 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3257 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3258 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3259 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3260 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3261 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3262 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3263 {PROTOCOL_LANMAN2
, "Samba"},
3264 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3265 {PROTOCOL_NT1
, "NT LM 0.12"},
3266 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3267 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3270 static const struct {
3271 enum protocol_types proto
;
3272 uint16_t smb2_dialect
;
3273 } smb2cli_prots
[] = {
3274 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3275 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3276 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3277 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3278 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3281 struct smbXcli_negprot_state
{
3282 struct smbXcli_conn
*conn
;
3283 struct tevent_context
*ev
;
3284 uint32_t timeout_msec
;
3285 enum protocol_types min_protocol
;
3286 enum protocol_types max_protocol
;
3290 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3294 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3295 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3296 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3297 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3298 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3299 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3303 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3304 struct tevent_context
*ev
,
3305 struct smbXcli_conn
*conn
,
3306 uint32_t timeout_msec
,
3307 enum protocol_types min_protocol
,
3308 enum protocol_types max_protocol
)
3310 struct tevent_req
*req
, *subreq
;
3311 struct smbXcli_negprot_state
*state
;
3313 req
= tevent_req_create(mem_ctx
, &state
,
3314 struct smbXcli_negprot_state
);
3320 state
->timeout_msec
= timeout_msec
;
3321 state
->min_protocol
= min_protocol
;
3322 state
->max_protocol
= max_protocol
;
3324 if (min_protocol
== PROTOCOL_NONE
) {
3325 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3326 return tevent_req_post(req
, ev
);
3329 if (max_protocol
== PROTOCOL_NONE
) {
3330 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3331 return tevent_req_post(req
, ev
);
3334 if (min_protocol
> max_protocol
) {
3335 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3336 return tevent_req_post(req
, ev
);
3339 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3340 (max_protocol
< PROTOCOL_SMB2_02
)) {
3344 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3346 subreq
= smbXcli_negprot_smb1_subreq(state
);
3347 if (tevent_req_nomem(subreq
, req
)) {
3348 return tevent_req_post(req
, ev
);
3350 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3354 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3355 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3359 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3361 subreq
= smbXcli_negprot_smb2_subreq(state
);
3362 if (tevent_req_nomem(subreq
, req
)) {
3363 return tevent_req_post(req
, ev
);
3365 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3370 * We send an SMB1 negprot with the SMB2 dialects
3371 * and expect a SMB1 or a SMB2 response.
3373 * smbXcli_negprot_dispatch_incoming() will fix the
3374 * callback to match protocol of the response.
3376 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3378 subreq
= smbXcli_negprot_smb1_subreq(state
);
3379 if (tevent_req_nomem(subreq
, req
)) {
3380 return tevent_req_post(req
, ev
);
3382 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3386 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3388 struct tevent_req
*req
=
3389 tevent_req_callback_data(subreq
,
3394 * we just want the low level error
3396 status
= tevent_req_simple_recv_ntstatus(subreq
);
3397 TALLOC_FREE(subreq
);
3398 if (tevent_req_nterror(req
, status
)) {
3402 /* this should never happen */
3403 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3406 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3409 DATA_BLOB bytes
= data_blob_null
;
3413 /* setup the protocol strings */
3414 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3418 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3422 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3426 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3432 * We now it is already ascii and
3433 * we want NULL termination.
3435 ok
= data_blob_append(state
, &bytes
,
3436 smb1cli_prots
[i
].smb1_name
,
3437 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3443 smb1cli_req_flags(state
->max_protocol
,
3444 state
->conn
->smb1
.client
.capabilities
,
3449 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3453 state
->timeout_msec
,
3454 0xFFFE, 0, 0, /* pid, tid, uid */
3455 0, NULL
, /* wct, vwv */
3456 bytes
.length
, bytes
.data
);
3459 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3461 struct tevent_req
*req
=
3462 tevent_req_callback_data(subreq
,
3464 struct smbXcli_negprot_state
*state
=
3465 tevent_req_data(req
,
3466 struct smbXcli_negprot_state
);
3467 struct smbXcli_conn
*conn
= state
->conn
;
3468 struct iovec
*recv_iov
= NULL
;
3477 size_t num_prots
= 0;
3479 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3480 uint32_t both_capabilities
;
3481 uint32_t server_capabilities
= 0;
3482 uint32_t capabilities
;
3483 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3484 uint32_t server_max_xmit
= 0;
3486 uint32_t server_max_mux
= 0;
3487 uint16_t server_security_mode
= 0;
3488 uint32_t server_session_key
= 0;
3489 bool server_readbraw
= false;
3490 bool server_writebraw
= false;
3491 bool server_lockread
= false;
3492 bool server_writeunlock
= false;
3493 struct GUID server_guid
= GUID_zero();
3494 DATA_BLOB server_gss_blob
= data_blob_null
;
3495 uint8_t server_challenge
[8];
3496 char *server_workgroup
= NULL
;
3497 char *server_name
= NULL
;
3498 int server_time_zone
= 0;
3499 NTTIME server_system_time
= 0;
3500 static const struct smb1cli_req_expected_response expected
[] = {
3502 .status
= NT_STATUS_OK
,
3503 .wct
= 0x11, /* NT1 */
3506 .status
= NT_STATUS_OK
,
3507 .wct
= 0x0D, /* LM */
3510 .status
= NT_STATUS_OK
,
3511 .wct
= 0x01, /* CORE */
3515 ZERO_STRUCT(server_challenge
);
3517 status
= smb1cli_req_recv(subreq
, state
,
3522 NULL
, /* pvwv_offset */
3525 NULL
, /* pbytes_offset */
3527 expected
, ARRAY_SIZE(expected
));
3528 TALLOC_FREE(subreq
);
3529 if (tevent_req_nterror(req
, status
)) {
3533 flags
= CVAL(inhdr
, HDR_FLG
);
3535 protnum
= SVAL(vwv
, 0);
3537 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3538 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3542 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3546 if (protnum
!= num_prots
) {
3551 conn
->protocol
= smb1cli_prots
[i
].proto
;
3555 if (conn
->protocol
== PROTOCOL_NONE
) {
3556 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3560 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3561 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3562 "and the selected protocol level doesn't support it.\n"));
3563 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3567 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3568 server_lockread
= true;
3569 server_writeunlock
= true;
3572 if (conn
->protocol
>= PROTOCOL_NT1
) {
3573 const char *client_signing
= NULL
;
3574 bool server_mandatory
= false;
3575 bool server_allowed
= false;
3576 const char *server_signing
= NULL
;
3581 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3586 server_security_mode
= CVAL(vwv
+ 1, 0);
3587 server_max_mux
= SVAL(vwv
+ 1, 1);
3588 server_max_xmit
= IVAL(vwv
+ 3, 1);
3589 server_session_key
= IVAL(vwv
+ 7, 1);
3590 server_time_zone
= SVALS(vwv
+ 15, 1);
3591 server_time_zone
*= 60;
3592 /* this time arrives in real GMT */
3593 server_system_time
= BVAL(vwv
+ 11, 1);
3594 server_capabilities
= IVAL(vwv
+ 9, 1);
3596 key_len
= CVAL(vwv
+ 16, 1);
3598 if (server_capabilities
& CAP_RAW_MODE
) {
3599 server_readbraw
= true;
3600 server_writebraw
= true;
3602 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3603 server_lockread
= true;
3606 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3607 DATA_BLOB blob1
, blob2
;
3609 if (num_bytes
< 16) {
3610 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3614 blob1
= data_blob_const(bytes
, 16);
3615 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3616 if (tevent_req_nterror(req
, status
)) {
3620 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3621 blob2
= data_blob_dup_talloc(state
, blob1
);
3622 if (blob1
.length
> 0 &&
3623 tevent_req_nomem(blob2
.data
, req
)) {
3626 server_gss_blob
= blob2
;
3628 DATA_BLOB blob1
, blob2
;
3630 if (num_bytes
< key_len
) {
3631 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3635 if (key_len
!= 0 && key_len
!= 8) {
3636 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3641 memcpy(server_challenge
, bytes
, 8);
3644 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3645 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3646 if (blob1
.length
> 0) {
3649 len
= utf16_len_n(blob1
.data
,
3653 ok
= convert_string_talloc(state
,
3661 status
= map_nt_error_from_unix_common(errno
);
3662 tevent_req_nterror(req
, status
);
3667 blob2
.data
+= blob1
.length
;
3668 blob2
.length
-= blob1
.length
;
3669 if (blob2
.length
> 0) {
3672 len
= utf16_len_n(blob1
.data
,
3676 ok
= convert_string_talloc(state
,
3684 status
= map_nt_error_from_unix_common(errno
);
3685 tevent_req_nterror(req
, status
);
3691 client_signing
= "disabled";
3692 if (conn
->allow_signing
) {
3693 client_signing
= "allowed";
3695 if (conn
->mandatory_signing
) {
3696 client_signing
= "required";
3699 server_signing
= "not supported";
3700 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3701 server_signing
= "supported";
3702 server_allowed
= true;
3704 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3705 server_signing
= "required";
3706 server_mandatory
= true;
3709 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3713 DEBUG(1,("cli_negprot: SMB signing is required, "
3714 "but client[%s] and server[%s] mismatch\n",
3715 client_signing
, server_signing
));
3716 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3720 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3726 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3730 server_security_mode
= SVAL(vwv
+ 1, 0);
3731 server_max_xmit
= SVAL(vwv
+ 2, 0);
3732 server_max_mux
= SVAL(vwv
+ 3, 0);
3733 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3734 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3735 server_session_key
= IVAL(vwv
+ 6, 0);
3736 server_time_zone
= SVALS(vwv
+ 10, 0);
3737 server_time_zone
*= 60;
3738 /* this time is converted to GMT by make_unix_date */
3739 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3740 unix_to_nt_time(&server_system_time
, t
);
3741 key_len
= SVAL(vwv
+ 11, 0);
3743 if (num_bytes
< key_len
) {
3744 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3748 if (key_len
!= 0 && key_len
!= 8) {
3749 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3754 memcpy(server_challenge
, bytes
, 8);
3757 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3758 if (blob1
.length
> 0) {
3762 len
= utf16_len_n(blob1
.data
,
3766 ok
= convert_string_talloc(state
,
3774 status
= map_nt_error_from_unix_common(errno
);
3775 tevent_req_nterror(req
, status
);
3781 /* the old core protocol */
3782 server_time_zone
= get_time_zone(time(NULL
));
3783 server_max_xmit
= 1024;
3787 if (server_max_xmit
< 1024) {
3788 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3792 if (server_max_mux
< 1) {
3793 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3798 * Now calculate the negotiated capabilities
3799 * based on the mask for:
3800 * - client only flags
3801 * - flags used in both directions
3802 * - server only flags
3804 both_capabilities
= client_capabilities
& server_capabilities
;
3805 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
3806 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
3807 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
3809 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
3811 conn
->smb1
.server
.capabilities
= server_capabilities
;
3812 conn
->smb1
.capabilities
= capabilities
;
3814 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
3815 conn
->smb1
.max_xmit
= max_xmit
;
3817 conn
->smb1
.server
.max_mux
= server_max_mux
;
3819 conn
->smb1
.server
.security_mode
= server_security_mode
;
3821 conn
->smb1
.server
.readbraw
= server_readbraw
;
3822 conn
->smb1
.server
.writebraw
= server_writebraw
;
3823 conn
->smb1
.server
.lockread
= server_lockread
;
3824 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
3826 conn
->smb1
.server
.session_key
= server_session_key
;
3828 talloc_steal(conn
, server_gss_blob
.data
);
3829 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
3830 conn
->smb1
.server
.guid
= server_guid
;
3831 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
3832 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
3833 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
3835 conn
->smb1
.server
.time_zone
= server_time_zone
;
3836 conn
->smb1
.server
.system_time
= server_system_time
;
3838 tevent_req_done(req
);
3841 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
3845 uint16_t dialect_count
= 0;
3847 buf
= state
->smb2
.dyn
;
3848 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3849 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3853 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3857 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
3861 buf
= state
->smb2
.fixed
;
3863 SSVAL(buf
, 2, dialect_count
);
3864 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
3865 SSVAL(buf
, 6, 0); /* Reserved */
3866 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
3867 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
3869 SIVAL(buf
, 8, 0); /* Capabilities */
3871 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
3875 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
3877 if (!NT_STATUS_IS_OK(status
)) {
3880 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
3882 memset(buf
+12, 0, 16); /* ClientGuid */
3884 SBVAL(buf
, 28, 0); /* ClientStartTime */
3886 return smb2cli_req_send(state
, state
->ev
,
3887 state
->conn
, SMB2_OP_NEGPROT
,
3889 state
->timeout_msec
,
3890 0xFEFF, 0, NULL
, /* pid, tid, session */
3891 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
3892 state
->smb2
.dyn
, dialect_count
*2);
3895 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
3897 struct tevent_req
*req
=
3898 tevent_req_callback_data(subreq
,
3900 struct smbXcli_negprot_state
*state
=
3901 tevent_req_data(req
,
3902 struct smbXcli_negprot_state
);
3903 struct smbXcli_conn
*conn
= state
->conn
;
3904 size_t security_offset
, security_length
;
3910 uint16_t dialect_revision
;
3911 static const struct smb2cli_req_expected_response expected
[] = {
3913 .status
= NT_STATUS_OK
,
3918 status
= smb2cli_req_recv(subreq
, state
, &iov
,
3919 expected
, ARRAY_SIZE(expected
));
3920 TALLOC_FREE(subreq
);
3921 if (tevent_req_nterror(req
, status
)) {
3925 body
= (uint8_t *)iov
[1].iov_base
;
3927 dialect_revision
= SVAL(body
, 4);
3929 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3930 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3934 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3938 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
3942 conn
->protocol
= smb2cli_prots
[i
].proto
;
3946 if (conn
->protocol
== PROTOCOL_NONE
) {
3947 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
3948 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3952 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
3953 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3957 /* make sure we do not loop forever */
3958 state
->min_protocol
= PROTOCOL_SMB2_02
;
3961 * send a SMB2 negprot, in order to negotiate
3964 subreq
= smbXcli_negprot_smb2_subreq(state
);
3965 if (tevent_req_nomem(subreq
, req
)) {
3968 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3972 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
3974 blob
= data_blob_const(body
+ 8, 16);
3975 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
3976 if (tevent_req_nterror(req
, status
)) {
3980 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
3981 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
3982 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
3983 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
3984 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
3985 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
3987 security_offset
= SVAL(body
, 56);
3988 security_length
= SVAL(body
, 58);
3990 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
3991 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3995 if (security_length
> iov
[2].iov_len
) {
3996 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4000 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4003 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4007 tevent_req_done(req
);
4010 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4011 TALLOC_CTX
*tmp_mem
,
4014 size_t num_pending
= talloc_array_length(conn
->pending
);
4015 struct tevent_req
*subreq
;
4016 struct smbXcli_req_state
*substate
;
4017 struct tevent_req
*req
;
4018 uint32_t protocol_magic
;
4019 size_t inbuf_len
= smb_len_nbt(inbuf
);
4021 if (num_pending
!= 1) {
4022 return NT_STATUS_INTERNAL_ERROR
;
4025 if (inbuf_len
< 4) {
4026 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4029 subreq
= conn
->pending
[0];
4030 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4031 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4033 protocol_magic
= IVAL(inbuf
, 4);
4035 switch (protocol_magic
) {
4037 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4038 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4039 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4042 if (substate
->smb2
.recv_iov
== NULL
) {
4044 * For the SMB1 negprot we have move it.
4046 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4047 substate
->smb1
.recv_iov
= NULL
;
4051 * we got an SMB2 answer, which consumed sequence number 0
4052 * so we need to use 1 as the next one
4055 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4056 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4057 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4060 DEBUG(10, ("Got non-SMB PDU\n"));
4061 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4064 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4066 return tevent_req_simple_recv_ntstatus(req
);
4069 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4070 uint32_t timeout_msec
,
4071 enum protocol_types min_protocol
,
4072 enum protocol_types max_protocol
)
4074 TALLOC_CTX
*frame
= talloc_stackframe();
4075 struct tevent_context
*ev
;
4076 struct tevent_req
*req
;
4077 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4080 if (smbXcli_conn_has_async_calls(conn
)) {
4082 * Can't use sync call while an async call is in flight
4084 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4087 ev
= tevent_context_init(frame
);
4091 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4092 min_protocol
, max_protocol
);
4096 ok
= tevent_req_poll(req
, ev
);
4098 status
= map_nt_error_from_unix_common(errno
);
4101 status
= smbXcli_negprot_recv(req
);
4107 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4109 if (session
->conn
== NULL
) {
4113 DLIST_REMOVE(session
->conn
->sessions
, session
);
4117 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4118 struct smbXcli_conn
*conn
)
4120 struct smbXcli_session
*session
;
4122 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4123 if (session
== NULL
) {
4126 talloc_set_destructor(session
, smbXcli_session_destructor
);
4128 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4129 session
->conn
= conn
;
4134 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4136 struct smbXcli_conn
*conn
= session
->conn
;
4137 uint8_t security_mode
= 0;
4140 return security_mode
;
4143 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4144 if (conn
->mandatory_signing
) {
4145 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4148 return security_mode
;
4151 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4153 return session
->smb2
.session_id
;
4156 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4158 return session
->smb2
.session_flags
;
4161 NTSTATUS
smb2cli_session_application_key(struct smbXcli_session
*session
,
4162 TALLOC_CTX
*mem_ctx
,
4165 *key
= data_blob_null
;
4167 if (session
->smb2
.application_key
.length
== 0) {
4168 return NT_STATUS_NO_USER_SESSION_KEY
;
4171 *key
= data_blob_dup_talloc(mem_ctx
, session
->smb2
.application_key
);
4172 if (key
->data
== NULL
) {
4173 return NT_STATUS_NO_MEMORY
;
4176 return NT_STATUS_OK
;
4179 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4180 uint64_t session_id
,
4181 uint16_t session_flags
)
4183 session
->smb2
.session_id
= session_id
;
4184 session
->smb2
.session_flags
= session_flags
;
4187 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4188 const DATA_BLOB _session_key
,
4189 const struct iovec
*recv_iov
)
4191 struct smbXcli_conn
*conn
= session
->conn
;
4192 uint16_t no_sign_flags
;
4193 uint8_t session_key
[16];
4197 return NT_STATUS_INVALID_PARAMETER_MIX
;
4200 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4202 if (session
->smb2
.session_flags
& no_sign_flags
) {
4203 session
->smb2
.should_sign
= false;
4204 return NT_STATUS_OK
;
4207 if (session
->smb2
.signing_key
.length
!= 0) {
4208 return NT_STATUS_INVALID_PARAMETER_MIX
;
4211 ZERO_STRUCT(session_key
);
4212 memcpy(session_key
, _session_key
.data
,
4213 MIN(_session_key
.length
, sizeof(session_key
)));
4215 session
->smb2
.signing_key
= data_blob_talloc(session
,
4217 sizeof(session_key
));
4218 if (session
->smb2
.signing_key
.data
== NULL
) {
4219 ZERO_STRUCT(session_key
);
4220 return NT_STATUS_NO_MEMORY
;
4223 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4224 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4225 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4227 smb2_key_derivation(session_key
, sizeof(session_key
),
4228 label
.data
, label
.length
,
4229 context
.data
, context
.length
,
4230 session
->smb2
.signing_key
.data
);
4233 session
->smb2
.encryption_key
= data_blob_dup_talloc(session
,
4234 session
->smb2
.signing_key
);
4235 if (session
->smb2
.encryption_key
.data
== NULL
) {
4236 ZERO_STRUCT(session_key
);
4237 return NT_STATUS_NO_MEMORY
;
4240 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4241 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4242 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4244 smb2_key_derivation(session_key
, sizeof(session_key
),
4245 label
.data
, label
.length
,
4246 context
.data
, context
.length
,
4247 session
->smb2
.encryption_key
.data
);
4250 session
->smb2
.decryption_key
= data_blob_dup_talloc(session
,
4251 session
->smb2
.signing_key
);
4252 if (session
->smb2
.decryption_key
.data
== NULL
) {
4253 ZERO_STRUCT(session_key
);
4254 return NT_STATUS_NO_MEMORY
;
4257 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4258 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4259 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4261 smb2_key_derivation(session_key
, sizeof(session_key
),
4262 label
.data
, label
.length
,
4263 context
.data
, context
.length
,
4264 session
->smb2
.decryption_key
.data
);
4267 session
->smb2
.application_key
= data_blob_dup_talloc(session
,
4268 session
->smb2
.signing_key
);
4269 if (session
->smb2
.application_key
.data
== NULL
) {
4270 ZERO_STRUCT(session_key
);
4271 return NT_STATUS_NO_MEMORY
;
4274 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4275 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4276 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4278 smb2_key_derivation(session_key
, sizeof(session_key
),
4279 label
.data
, label
.length
,
4280 context
.data
, context
.length
,
4281 session
->smb2
.application_key
.data
);
4283 ZERO_STRUCT(session_key
);
4285 session
->smb2
.channel_signing_key
= data_blob_dup_talloc(session
,
4286 session
->smb2
.signing_key
);
4287 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4288 return NT_STATUS_NO_MEMORY
;
4291 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4292 session
->conn
->protocol
,
4294 if (!NT_STATUS_IS_OK(status
)) {
4298 session
->smb2
.should_sign
= false;
4299 session
->smb2
.should_encrypt
= false;
4301 if (conn
->desire_signing
) {
4302 session
->smb2
.should_sign
= true;
4305 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4306 session
->smb2
.should_sign
= true;
4309 generate_random_buffer((uint8_t *)&session
->smb2
.channel_nonce
,
4310 sizeof(session
->smb2
.channel_nonce
));
4311 session
->smb2
.channel_next
= 1;
4313 return NT_STATUS_OK
;
4316 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4317 struct smbXcli_session
*session1
,
4318 struct smbXcli_conn
*conn
,
4319 struct smbXcli_session
**_session2
)
4321 struct smbXcli_session
*session2
;
4323 if (session1
->smb2
.signing_key
.length
== 0) {
4324 return NT_STATUS_INVALID_PARAMETER_MIX
;
4327 if (session1
->smb2
.channel_next
== 0) {
4328 return NT_STATUS_INVALID_PARAMETER_MIX
;
4332 return NT_STATUS_INVALID_PARAMETER_MIX
;
4335 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4336 if (session2
== NULL
) {
4337 return NT_STATUS_NO_MEMORY
;
4339 session2
->smb2
.session_id
= session1
->smb2
.session_id
;
4340 session2
->smb2
.session_flags
= session1
->smb2
.session_flags
;
4342 session2
->smb2
.signing_key
= data_blob_dup_talloc(session2
,
4343 session1
->smb2
.signing_key
);
4344 if (session2
->smb2
.signing_key
.data
== NULL
) {
4345 return NT_STATUS_NO_MEMORY
;
4348 session2
->smb2
.application_key
= data_blob_dup_talloc(session2
,
4349 session1
->smb2
.application_key
);
4350 if (session2
->smb2
.application_key
.data
== NULL
) {
4351 return NT_STATUS_NO_MEMORY
;
4354 session2
->smb2
.should_sign
= session1
->smb2
.should_sign
;
4355 session2
->smb2
.should_encrypt
= session1
->smb2
.should_encrypt
;
4357 session2
->smb2
.channel_nonce
= session1
->smb2
.channel_nonce
;
4358 session2
->smb2
.channel_nonce
+= session1
->smb2
.channel_next
;
4359 session1
->smb2
.channel_next
++;
4361 session2
->smb2
.encryption_key
= data_blob_dup_talloc(session2
,
4362 session1
->smb2
.encryption_key
);
4363 if (session2
->smb2
.encryption_key
.data
== NULL
) {
4364 return NT_STATUS_NO_MEMORY
;
4367 session2
->smb2
.decryption_key
= data_blob_dup_talloc(session2
,
4368 session1
->smb2
.decryption_key
);
4369 if (session2
->smb2
.decryption_key
.data
== NULL
) {
4370 return NT_STATUS_NO_MEMORY
;
4373 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4374 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4375 session2
->conn
= conn
;
4377 *_session2
= session2
;
4378 return NT_STATUS_OK
;
4381 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4382 const DATA_BLOB _channel_key
,
4383 const struct iovec
*recv_iov
)
4385 struct smbXcli_conn
*conn
= session
->conn
;
4386 uint8_t channel_key
[16];
4390 return NT_STATUS_INVALID_PARAMETER_MIX
;
4393 if (session
->smb2
.channel_signing_key
.length
!= 0) {
4394 return NT_STATUS_INVALID_PARAMETER_MIX
;
4397 ZERO_STRUCT(channel_key
);
4398 memcpy(channel_key
, _channel_key
.data
,
4399 MIN(_channel_key
.length
, sizeof(channel_key
)));
4401 session
->smb2
.channel_signing_key
= data_blob_talloc(session
,
4403 sizeof(channel_key
));
4404 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4405 ZERO_STRUCT(channel_key
);
4406 return NT_STATUS_NO_MEMORY
;
4409 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4410 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4411 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4413 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4414 label
.data
, label
.length
,
4415 context
.data
, context
.length
,
4416 session
->smb2
.channel_signing_key
.data
);
4418 ZERO_STRUCT(channel_key
);
4420 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4421 session
->conn
->protocol
,
4423 if (!NT_STATUS_IS_OK(status
)) {
4427 return NT_STATUS_OK
;