2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "../libcli/smb/smb_common.h"
29 #include "../libcli/smb/smb_seal.h"
30 #include "../libcli/smb/smb_signing.h"
31 #include "../libcli/smb/read_smb.h"
32 #include "smbXcli_base.h"
33 #include "librpc/ndr/libndr.h"
37 struct smbXcli_session
;
43 struct sockaddr_storage local_ss
;
44 struct sockaddr_storage remote_ss
;
45 const char *remote_name
;
47 struct tevent_queue
*outgoing
;
48 struct tevent_req
**pending
;
49 struct tevent_req
*read_smb_req
;
51 enum protocol_types protocol
;
54 bool mandatory_signing
;
57 * The incoming dispatch function should return:
58 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
59 * - NT_STATUS_OK, if no more processing is desired, e.g.
60 * the dispatch function called
62 * - All other return values disconnect the connection.
64 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
70 uint32_t capabilities
;
75 uint32_t capabilities
;
78 uint16_t security_mode
;
87 const char *workgroup
;
93 uint32_t capabilities
;
98 struct smb_signing_state
*signing
;
99 struct smb_trans_enc_state
*trans_enc
;
101 struct tevent_req
*read_braw_req
;
106 uint32_t capabilities
;
107 uint16_t security_mode
;
112 uint32_t capabilities
;
113 uint16_t security_mode
;
115 uint32_t max_trans_size
;
116 uint32_t max_read_size
;
117 uint32_t max_write_size
;
124 uint16_t cur_credits
;
125 uint16_t max_credits
;
128 struct smbXcli_session
*sessions
;
131 struct smbXcli_session
{
132 struct smbXcli_session
*prev
, *next
;
133 struct smbXcli_conn
*conn
;
141 uint16_t session_flags
;
142 DATA_BLOB application_key
;
143 DATA_BLOB signing_key
;
146 DATA_BLOB encryption_key
;
147 DATA_BLOB decryption_key
;
148 uint64_t channel_nonce
;
149 uint64_t channel_next
;
150 DATA_BLOB channel_signing_key
;
154 struct smbXcli_tcon
{
157 uint16_t optional_support
;
158 uint32_t maximal_access
;
159 uint32_t guest_maximal_access
;
168 uint32_t capabilities
;
169 uint32_t maximal_access
;
173 struct smbXcli_req_state
{
174 struct tevent_context
*ev
;
175 struct smbXcli_conn
*conn
;
176 struct smbXcli_session
*session
; /* maybe NULL */
177 struct smbXcli_tcon
*tcon
; /* maybe NULL */
179 uint8_t length_hdr
[4];
186 /* Space for the header including the wct */
187 uint8_t hdr
[HDR_VWV
];
190 * For normal requests, smb1cli_req_send chooses a mid.
191 * SecondaryV trans requests need to use the mid of the primary
192 * request, so we need a place to store it.
193 * Assume it is set if != 0.
198 uint8_t bytecount_buf
[2];
200 #define MAX_SMB_IOV 10
201 /* length_hdr, hdr, words, byte_count, buffers */
202 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
207 struct tevent_req
**chained_requests
;
210 NTSTATUS recv_status
;
211 /* always an array of 3 talloc elements */
212 struct iovec
*recv_iov
;
216 const uint8_t *fixed
;
221 uint8_t transform
[SMB2_TF_HDR_SIZE
];
222 uint8_t hdr
[SMB2_HDR_BODY
];
223 uint8_t pad
[7]; /* padding space for compounding */
226 * always an array of 3 talloc elements
227 * (without a SMB2_TRANSFORM header!)
231 struct iovec
*recv_iov
;
233 uint16_t credit_charge
;
238 bool signing_skipped
;
244 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
247 * NT_STATUS_OK, means we do not notify the callers
249 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
251 while (conn
->sessions
) {
252 conn
->sessions
->conn
= NULL
;
253 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
256 if (conn
->smb1
.trans_enc
) {
257 TALLOC_FREE(conn
->smb1
.trans_enc
);
263 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
265 const char *remote_name
,
266 enum smb_signing_setting signing_state
,
267 uint32_t smb1_capabilities
,
268 struct GUID
*client_guid
,
269 uint32_t smb2_capabilities
)
271 struct smbXcli_conn
*conn
= NULL
;
273 struct sockaddr
*sa
= NULL
;
277 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
283 conn
->write_fd
= dup(fd
);
284 if (conn
->write_fd
== -1) {
288 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
289 if (conn
->remote_name
== NULL
) {
294 ss
= (void *)&conn
->local_ss
;
295 sa
= (struct sockaddr
*)ss
;
296 sa_length
= sizeof(conn
->local_ss
);
297 ret
= getsockname(fd
, sa
, &sa_length
);
301 ss
= (void *)&conn
->remote_ss
;
302 sa
= (struct sockaddr
*)ss
;
303 sa_length
= sizeof(conn
->remote_ss
);
304 ret
= getpeername(fd
, sa
, &sa_length
);
309 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
310 if (conn
->outgoing
== NULL
) {
313 conn
->pending
= NULL
;
315 conn
->protocol
= PROTOCOL_NONE
;
317 switch (signing_state
) {
318 case SMB_SIGNING_OFF
:
320 conn
->allow_signing
= false;
321 conn
->desire_signing
= false;
322 conn
->mandatory_signing
= false;
324 case SMB_SIGNING_DEFAULT
:
325 case SMB_SIGNING_IF_REQUIRED
:
326 /* if the server requires it */
327 conn
->allow_signing
= true;
328 conn
->desire_signing
= false;
329 conn
->mandatory_signing
= false;
331 case SMB_SIGNING_REQUIRED
:
333 conn
->allow_signing
= true;
334 conn
->desire_signing
= true;
335 conn
->mandatory_signing
= true;
339 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
340 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
342 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
343 conn
->smb1
.max_xmit
= 1024;
347 /* initialise signing */
348 conn
->smb1
.signing
= smb_signing_init(conn
,
350 conn
->desire_signing
,
351 conn
->mandatory_signing
);
352 if (!conn
->smb1
.signing
) {
356 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
357 if (conn
->mandatory_signing
) {
358 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
361 conn
->smb2
.client
.guid
= *client_guid
;
363 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
365 conn
->smb2
.cur_credits
= 1;
366 conn
->smb2
.max_credits
= 0;
368 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
372 if (conn
->write_fd
!= -1) {
373 close(conn
->write_fd
);
379 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
385 if (conn
->read_fd
== -1) {
392 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
394 return conn
->protocol
;
397 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
399 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
403 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
410 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
412 set_socket_options(conn
->read_fd
, options
);
415 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
417 return &conn
->local_ss
;
420 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
422 return &conn
->remote_ss
;
425 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
427 return conn
->remote_name
;
430 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
432 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
439 return conn
->smb1
.server
.max_mux
;
442 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
444 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
445 return conn
->smb2
.server
.system_time
;
448 return conn
->smb1
.server
.system_time
;
451 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
453 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
454 return &conn
->smb2
.server
.gss_blob
;
457 return &conn
->smb1
.server
.gss_blob
;
460 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
462 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
463 return &conn
->smb2
.server
.guid
;
466 return &conn
->smb1
.server
.guid
;
469 struct smbXcli_conn_samba_suicide_state
{
470 struct smbXcli_conn
*conn
;
475 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
477 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
478 struct tevent_context
*ev
,
479 struct smbXcli_conn
*conn
,
482 struct tevent_req
*req
, *subreq
;
483 struct smbXcli_conn_samba_suicide_state
*state
;
485 req
= tevent_req_create(mem_ctx
, &state
,
486 struct smbXcli_conn_samba_suicide_state
);
491 SIVAL(state
->buf
, 4, 0x74697865);
492 SCVAL(state
->buf
, 8, exitcode
);
493 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
495 state
->iov
.iov_base
= state
->buf
;
496 state
->iov
.iov_len
= sizeof(state
->buf
);
498 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->write_fd
,
499 false, &state
->iov
, 1);
500 if (tevent_req_nomem(subreq
, req
)) {
501 return tevent_req_post(req
, ev
);
503 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
507 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
509 struct tevent_req
*req
= tevent_req_callback_data(
510 subreq
, struct tevent_req
);
511 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
512 req
, struct smbXcli_conn_samba_suicide_state
);
516 nwritten
= writev_recv(subreq
, &err
);
518 if (nwritten
== -1) {
519 NTSTATUS status
= map_nt_error_from_unix_common(err
);
520 smbXcli_conn_disconnect(state
->conn
, status
);
523 tevent_req_done(req
);
526 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
528 return tevent_req_simple_recv_ntstatus(req
);
531 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
534 TALLOC_CTX
*frame
= talloc_stackframe();
535 struct tevent_context
*ev
;
536 struct tevent_req
*req
;
537 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
540 if (smbXcli_conn_has_async_calls(conn
)) {
542 * Can't use sync call while an async call is in flight
544 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
547 ev
= tevent_context_init(frame
);
551 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
555 ok
= tevent_req_poll(req
, ev
);
557 status
= map_nt_error_from_unix_common(errno
);
560 status
= smbXcli_conn_samba_suicide_recv(req
);
566 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
568 return conn
->smb1
.capabilities
;
571 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
573 return conn
->smb1
.max_xmit
;
576 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
578 return conn
->smb1
.server
.session_key
;
581 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
583 return conn
->smb1
.server
.challenge
;
586 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
588 return conn
->smb1
.server
.security_mode
;
591 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
593 return conn
->smb1
.server
.readbraw
;
596 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
598 return conn
->smb1
.server
.writebraw
;
601 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
603 return conn
->smb1
.server
.lockread
;
606 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
608 return conn
->smb1
.server
.writeunlock
;
611 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
613 return conn
->smb1
.server
.time_zone
;
616 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
617 const DATA_BLOB user_session_key
,
618 const DATA_BLOB response
)
620 return smb_signing_activate(conn
->smb1
.signing
,
625 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
626 const uint8_t *buf
, uint32_t seqnum
)
628 return smb_signing_check_pdu(conn
->smb1
.signing
, buf
, seqnum
);
631 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
633 return smb_signing_is_active(conn
->smb1
.signing
);
636 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
637 struct smb_trans_enc_state
*es
)
639 /* Replace the old state, if any. */
640 if (conn
->smb1
.trans_enc
) {
641 TALLOC_FREE(conn
->smb1
.trans_enc
);
643 conn
->smb1
.trans_enc
= es
;
646 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
648 return common_encryption_on(conn
->smb1
.trans_enc
);
652 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
654 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
655 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
657 if (NT_STATUS_IS_OK(status
)) {
661 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
665 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
669 * Is the SMB command able to hold an AND_X successor
670 * @param[in] cmd The SMB command in question
671 * @retval Can we add a chained request after "cmd"?
673 bool smb1cli_is_andx_req(uint8_t cmd
)
693 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
695 size_t num_pending
= talloc_array_length(conn
->pending
);
701 result
= conn
->smb1
.mid
++;
702 if ((result
== 0) || (result
== 0xffff)) {
706 for (i
=0; i
<num_pending
; i
++) {
707 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
712 if (i
== num_pending
) {
718 void smbXcli_req_unset_pending(struct tevent_req
*req
)
720 struct smbXcli_req_state
*state
=
722 struct smbXcli_req_state
);
723 struct smbXcli_conn
*conn
= state
->conn
;
724 size_t num_pending
= talloc_array_length(conn
->pending
);
727 if (state
->smb1
.mid
!= 0) {
729 * This is a [nt]trans[2] request which waits
730 * for more than one reply.
735 talloc_set_destructor(req
, NULL
);
737 if (num_pending
== 1) {
739 * The pending read_smb tevent_req is a child of
740 * conn->pending. So if nothing is pending anymore, we need to
741 * delete the socket read fde.
743 TALLOC_FREE(conn
->pending
);
744 conn
->read_smb_req
= NULL
;
748 for (i
=0; i
<num_pending
; i
++) {
749 if (req
== conn
->pending
[i
]) {
753 if (i
== num_pending
) {
755 * Something's seriously broken. Just returning here is the
756 * right thing nevertheless, the point of this routine is to
757 * remove ourselves from conn->pending.
763 * Remove ourselves from the conn->pending array
765 for (; i
< (num_pending
- 1); i
++) {
766 conn
->pending
[i
] = conn
->pending
[i
+1];
770 * No NULL check here, we're shrinking by sizeof(void *), and
771 * talloc_realloc just adjusts the size for this.
773 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
778 static int smbXcli_req_destructor(struct tevent_req
*req
)
780 struct smbXcli_req_state
*state
=
782 struct smbXcli_req_state
);
785 * Make sure we really remove it from
786 * the pending array on destruction.
789 smbXcli_req_unset_pending(req
);
793 static bool smb1cli_req_cancel(struct tevent_req
*req
);
794 static bool smb2cli_req_cancel(struct tevent_req
*req
);
796 static bool smbXcli_req_cancel(struct tevent_req
*req
)
798 struct smbXcli_req_state
*state
=
800 struct smbXcli_req_state
);
802 if (!smbXcli_conn_is_connected(state
->conn
)) {
806 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
810 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
811 return smb2cli_req_cancel(req
);
814 return smb1cli_req_cancel(req
);
817 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
819 bool smbXcli_req_set_pending(struct tevent_req
*req
)
821 struct smbXcli_req_state
*state
=
823 struct smbXcli_req_state
);
824 struct smbXcli_conn
*conn
;
825 struct tevent_req
**pending
;
830 if (!smbXcli_conn_is_connected(conn
)) {
834 num_pending
= talloc_array_length(conn
->pending
);
836 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
838 if (pending
== NULL
) {
841 pending
[num_pending
] = req
;
842 conn
->pending
= pending
;
843 talloc_set_destructor(req
, smbXcli_req_destructor
);
844 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
846 if (!smbXcli_conn_receive_next(conn
)) {
848 * the caller should notify the current request
850 * And all other pending requests get notified
851 * by smbXcli_conn_disconnect().
853 smbXcli_req_unset_pending(req
);
854 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
861 static void smbXcli_conn_received(struct tevent_req
*subreq
);
863 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
865 size_t num_pending
= talloc_array_length(conn
->pending
);
866 struct tevent_req
*req
;
867 struct smbXcli_req_state
*state
;
869 if (conn
->read_smb_req
!= NULL
) {
873 if (num_pending
== 0) {
874 if (conn
->smb2
.mid
< UINT64_MAX
) {
875 /* no more pending requests, so we are done for now */
880 * If there are no more SMB2 requests possible,
881 * because we are out of message ids,
882 * we need to disconnect.
884 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
888 req
= conn
->pending
[0];
889 state
= tevent_req_data(req
, struct smbXcli_req_state
);
892 * We're the first ones, add the read_smb request that waits for the
893 * answer from the server
895 conn
->read_smb_req
= read_smb_send(conn
->pending
,
898 if (conn
->read_smb_req
== NULL
) {
901 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
905 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
907 tevent_queue_stop(conn
->outgoing
);
909 if (conn
->read_fd
!= -1) {
910 close(conn
->read_fd
);
912 if (conn
->write_fd
!= -1) {
913 close(conn
->write_fd
);
919 * Cancel all pending requests. We do not do a for-loop walking
920 * conn->pending because that array changes in
921 * smbXcli_req_unset_pending.
923 while (talloc_array_length(conn
->pending
) > 0) {
924 struct tevent_req
*req
;
925 struct smbXcli_req_state
*state
;
926 struct tevent_req
**chain
;
930 req
= conn
->pending
[0];
931 state
= tevent_req_data(req
, struct smbXcli_req_state
);
933 if (state
->smb1
.chained_requests
== NULL
) {
935 * We're dead. No point waiting for trans2
940 smbXcli_req_unset_pending(req
);
942 if (NT_STATUS_IS_OK(status
)) {
943 /* do not notify the callers */
948 * we need to defer the callback, because we may notify
949 * more then one caller.
951 tevent_req_defer_callback(req
, state
->ev
);
952 tevent_req_nterror(req
, status
);
956 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
957 num_chained
= talloc_array_length(chain
);
959 for (i
=0; i
<num_chained
; i
++) {
961 state
= tevent_req_data(req
, struct smbXcli_req_state
);
964 * We're dead. No point waiting for trans2
969 smbXcli_req_unset_pending(req
);
971 if (NT_STATUS_IS_OK(status
)) {
972 /* do not notify the callers */
977 * we need to defer the callback, because we may notify
978 * more than one caller.
980 tevent_req_defer_callback(req
, state
->ev
);
981 tevent_req_nterror(req
, status
);
988 * Fetch a smb request's mid. Only valid after the request has been sent by
989 * smb1cli_req_send().
991 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
993 struct smbXcli_req_state
*state
=
995 struct smbXcli_req_state
);
997 if (state
->smb1
.mid
!= 0) {
998 return state
->smb1
.mid
;
1001 return SVAL(state
->smb1
.hdr
, HDR_MID
);
1004 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
1006 struct smbXcli_req_state
*state
=
1007 tevent_req_data(req
,
1008 struct smbXcli_req_state
);
1010 state
->smb1
.mid
= mid
;
1013 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
1015 struct smbXcli_req_state
*state
=
1016 tevent_req_data(req
,
1017 struct smbXcli_req_state
);
1019 return state
->smb1
.seqnum
;
1022 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
1024 struct smbXcli_req_state
*state
=
1025 tevent_req_data(req
,
1026 struct smbXcli_req_state
);
1028 state
->smb1
.seqnum
= seqnum
;
1031 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1035 for (i
=0; i
<count
; i
++) {
1036 result
+= iov
[i
].iov_len
;
1041 static uint8_t *smbXcli_iov_concat(TALLOC_CTX
*mem_ctx
,
1042 const struct iovec
*iov
,
1045 size_t len
= smbXcli_iov_len(iov
, count
);
1050 buf
= talloc_array(mem_ctx
, uint8_t, len
);
1055 for (i
=0; i
<count
; i
++) {
1056 memcpy(buf
+copied
, iov
[i
].iov_base
, iov
[i
].iov_len
);
1057 copied
+= iov
[i
].iov_len
;
1062 static void smb1cli_req_flags(enum protocol_types protocol
,
1063 uint32_t smb1_capabilities
,
1064 uint8_t smb_command
,
1065 uint8_t additional_flags
,
1066 uint8_t clear_flags
,
1068 uint16_t additional_flags2
,
1069 uint16_t clear_flags2
,
1073 uint16_t flags2
= 0;
1075 if (protocol
>= PROTOCOL_LANMAN1
) {
1076 flags
|= FLAG_CASELESS_PATHNAMES
;
1077 flags
|= FLAG_CANONICAL_PATHNAMES
;
1080 if (protocol
>= PROTOCOL_LANMAN2
) {
1081 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1082 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1085 if (protocol
>= PROTOCOL_NT1
) {
1086 flags2
|= FLAGS2_IS_LONG_NAME
;
1088 if (smb1_capabilities
& CAP_UNICODE
) {
1089 flags2
|= FLAGS2_UNICODE_STRINGS
;
1091 if (smb1_capabilities
& CAP_STATUS32
) {
1092 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1094 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1095 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1099 flags
|= additional_flags
;
1100 flags
&= ~clear_flags
;
1101 flags2
|= additional_flags2
;
1102 flags2
&= ~clear_flags2
;
1108 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1110 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1112 struct smbXcli_req_state
*state
=
1113 tevent_req_data(req
,
1114 struct smbXcli_req_state
);
1119 struct tevent_req
*subreq
;
1122 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1123 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1124 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1125 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1126 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1128 subreq
= smb1cli_req_create(state
, state
->ev
,
1138 0, NULL
); /* bytes */
1139 if (subreq
== NULL
) {
1142 smb1cli_req_set_mid(subreq
, mid
);
1144 status
= smb1cli_req_chain_submit(&subreq
, 1);
1145 if (!NT_STATUS_IS_OK(status
)) {
1146 TALLOC_FREE(subreq
);
1149 smb1cli_req_set_mid(subreq
, 0);
1151 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1156 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1158 /* we do not care about the result */
1159 TALLOC_FREE(subreq
);
1162 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1163 struct tevent_context
*ev
,
1164 struct smbXcli_conn
*conn
,
1165 uint8_t smb_command
,
1166 uint8_t additional_flags
,
1167 uint8_t clear_flags
,
1168 uint16_t additional_flags2
,
1169 uint16_t clear_flags2
,
1170 uint32_t timeout_msec
,
1172 struct smbXcli_tcon
*tcon
,
1173 struct smbXcli_session
*session
,
1174 uint8_t wct
, uint16_t *vwv
,
1176 struct iovec
*bytes_iov
)
1178 struct tevent_req
*req
;
1179 struct smbXcli_req_state
*state
;
1181 uint16_t flags2
= 0;
1185 if (iov_count
> MAX_SMB_IOV
) {
1187 * Should not happen :-)
1192 req
= tevent_req_create(mem_ctx
, &state
,
1193 struct smbXcli_req_state
);
1199 state
->session
= session
;
1203 uid
= session
->smb1
.session_id
;
1207 tid
= tcon
->smb1
.tcon_id
;
1210 state
->smb1
.recv_cmd
= 0xFF;
1211 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1212 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1213 if (state
->smb1
.recv_iov
== NULL
) {
1218 smb1cli_req_flags(conn
->protocol
,
1219 conn
->smb1
.capabilities
,
1228 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1229 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1230 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1231 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1232 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1233 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1234 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1235 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1236 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1237 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1238 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1240 state
->smb1
.vwv
= vwv
;
1242 SSVAL(state
->smb1
.bytecount_buf
, 0, smbXcli_iov_len(bytes_iov
, iov_count
));
1244 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1245 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1246 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1247 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1248 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1249 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1250 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1251 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1253 if (iov_count
!= 0) {
1254 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1255 iov_count
* sizeof(*bytes_iov
));
1257 state
->smb1
.iov_count
= iov_count
+ 4;
1259 if (timeout_msec
> 0) {
1260 struct timeval endtime
;
1262 endtime
= timeval_current_ofs_msec(timeout_msec
);
1263 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1268 switch (smb_command
) {
1272 state
->one_way
= true;
1275 state
->one_way
= true;
1276 state
->smb1
.one_way_seqnum
= true;
1280 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1281 state
->one_way
= true;
1289 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1290 struct iovec
*iov
, int iov_count
,
1292 bool one_way_seqnum
)
1294 TALLOC_CTX
*frame
= NULL
;
1298 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1299 * iovec directly. MD5Update would do that just fine.
1302 if (iov_count
< 4) {
1303 return NT_STATUS_INVALID_PARAMETER_MIX
;
1305 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1306 return NT_STATUS_INVALID_PARAMETER_MIX
;
1308 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1309 return NT_STATUS_INVALID_PARAMETER_MIX
;
1311 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1312 return NT_STATUS_INVALID_PARAMETER_MIX
;
1314 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1315 return NT_STATUS_INVALID_PARAMETER_MIX
;
1318 frame
= talloc_stackframe();
1320 buf
= smbXcli_iov_concat(frame
, iov
, iov_count
);
1322 return NT_STATUS_NO_MEMORY
;
1325 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1327 smb_signing_sign_pdu(conn
->smb1
.signing
, buf
, *seqnum
);
1328 memcpy(iov
[1].iov_base
, buf
+4, iov
[1].iov_len
);
1331 return NT_STATUS_OK
;
1334 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1335 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1336 TALLOC_CTX
*tmp_mem
,
1339 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1340 struct smbXcli_req_state
*state
,
1341 struct iovec
*iov
, int iov_count
)
1343 struct tevent_req
*subreq
;
1348 if (!smbXcli_conn_is_connected(state
->conn
)) {
1349 return NT_STATUS_CONNECTION_DISCONNECTED
;
1352 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1353 return NT_STATUS_REVISION_MISMATCH
;
1356 if (iov_count
< 4) {
1357 return NT_STATUS_INVALID_PARAMETER_MIX
;
1359 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1360 return NT_STATUS_INVALID_PARAMETER_MIX
;
1362 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1363 return NT_STATUS_INVALID_PARAMETER_MIX
;
1365 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1366 return NT_STATUS_INVALID_PARAMETER_MIX
;
1368 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1369 return NT_STATUS_INVALID_PARAMETER_MIX
;
1372 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1373 if (cmd
== SMBreadBraw
) {
1374 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1375 return NT_STATUS_INVALID_PARAMETER_MIX
;
1377 state
->conn
->smb1
.read_braw_req
= req
;
1380 if (state
->smb1
.mid
!= 0) {
1381 mid
= state
->smb1
.mid
;
1383 mid
= smb1cli_alloc_mid(state
->conn
);
1385 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1387 _smb_setlen_nbt(iov
[0].iov_base
, smbXcli_iov_len(&iov
[1], iov_count
-1));
1389 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1390 &state
->smb1
.seqnum
,
1391 state
->smb1
.one_way_seqnum
);
1393 if (!NT_STATUS_IS_OK(status
)) {
1398 * If we supported multiple encrytion contexts
1399 * here we'd look up based on tid.
1401 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1402 char *buf
, *enc_buf
;
1404 buf
= (char *)smbXcli_iov_concat(talloc_tos(), iov
, iov_count
);
1406 return NT_STATUS_NO_MEMORY
;
1408 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1409 (char *)buf
, &enc_buf
);
1411 if (!NT_STATUS_IS_OK(status
)) {
1412 DEBUG(0, ("Error in encrypting client message: %s\n",
1413 nt_errstr(status
)));
1416 buf
= (char *)talloc_memdup(state
, enc_buf
,
1417 smb_len_nbt(enc_buf
)+4);
1420 return NT_STATUS_NO_MEMORY
;
1422 iov
[0].iov_base
= (void *)buf
;
1423 iov
[0].iov_len
= talloc_get_size(buf
);
1427 if (state
->conn
->dispatch_incoming
== NULL
) {
1428 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1431 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1433 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1434 state
->conn
->write_fd
, false, iov
, iov_count
);
1435 if (subreq
== NULL
) {
1436 return NT_STATUS_NO_MEMORY
;
1438 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1439 return NT_STATUS_OK
;
1442 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1443 struct tevent_context
*ev
,
1444 struct smbXcli_conn
*conn
,
1445 uint8_t smb_command
,
1446 uint8_t additional_flags
,
1447 uint8_t clear_flags
,
1448 uint16_t additional_flags2
,
1449 uint16_t clear_flags2
,
1450 uint32_t timeout_msec
,
1452 struct smbXcli_tcon
*tcon
,
1453 struct smbXcli_session
*session
,
1454 uint8_t wct
, uint16_t *vwv
,
1456 const uint8_t *bytes
)
1458 struct tevent_req
*req
;
1462 iov
.iov_base
= discard_const_p(void, bytes
);
1463 iov
.iov_len
= num_bytes
;
1465 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1466 additional_flags
, clear_flags
,
1467 additional_flags2
, clear_flags2
,
1474 if (!tevent_req_is_in_progress(req
)) {
1475 return tevent_req_post(req
, ev
);
1477 status
= smb1cli_req_chain_submit(&req
, 1);
1478 if (tevent_req_nterror(req
, status
)) {
1479 return tevent_req_post(req
, ev
);
1484 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1486 struct tevent_req
*req
=
1487 tevent_req_callback_data(subreq
,
1489 struct smbXcli_req_state
*state
=
1490 tevent_req_data(req
,
1491 struct smbXcli_req_state
);
1495 nwritten
= writev_recv(subreq
, &err
);
1496 TALLOC_FREE(subreq
);
1497 if (nwritten
== -1) {
1498 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1499 smbXcli_conn_disconnect(state
->conn
, status
);
1503 if (state
->one_way
) {
1504 state
->inbuf
= NULL
;
1505 tevent_req_done(req
);
1509 if (!smbXcli_req_set_pending(req
)) {
1510 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
1515 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1517 struct smbXcli_conn
*conn
=
1518 tevent_req_callback_data(subreq
,
1519 struct smbXcli_conn
);
1520 TALLOC_CTX
*frame
= talloc_stackframe();
1526 if (subreq
!= conn
->read_smb_req
) {
1527 DEBUG(1, ("Internal error: cli_smb_received called with "
1528 "unexpected subreq\n"));
1529 status
= NT_STATUS_INTERNAL_ERROR
;
1530 smbXcli_conn_disconnect(conn
, status
);
1534 conn
->read_smb_req
= NULL
;
1536 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1537 TALLOC_FREE(subreq
);
1538 if (received
== -1) {
1539 status
= map_nt_error_from_unix_common(err
);
1540 smbXcli_conn_disconnect(conn
, status
);
1545 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1547 if (NT_STATUS_IS_OK(status
)) {
1549 * We should not do any more processing
1550 * as the dispatch function called
1551 * tevent_req_done().
1554 } else if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1556 * We got an error, so notify all pending requests
1558 smbXcli_conn_disconnect(conn
, status
);
1563 * We got NT_STATUS_RETRY, so we may ask for a
1564 * next incoming pdu.
1566 if (!smbXcli_conn_receive_next(conn
)) {
1567 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1571 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1572 struct iovec
**piov
, int *pnum_iov
)
1583 buflen
= smb_len_nbt(buf
);
1586 hdr
= buf
+ NBT_HDR_SIZE
;
1588 if (buflen
< MIN_SMB_SIZE
) {
1589 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1593 * This returns iovec elements in the following order:
1608 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1610 return NT_STATUS_NO_MEMORY
;
1612 iov
[0].iov_base
= hdr
;
1613 iov
[0].iov_len
= HDR_WCT
;
1616 cmd
= CVAL(hdr
, HDR_COM
);
1620 size_t len
= buflen
- taken
;
1622 struct iovec
*iov_tmp
;
1629 * we need at least WCT and BCC
1631 needed
= sizeof(uint8_t) + sizeof(uint16_t);
1633 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1634 __location__
, (int)len
, (int)needed
));
1639 * Now we check if the specified words are there
1641 wct
= CVAL(hdr
, wct_ofs
);
1642 needed
+= wct
* sizeof(uint16_t);
1644 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1645 __location__
, (int)len
, (int)needed
));
1650 * Now we check if the specified bytes are there
1652 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
1653 bcc
= SVAL(hdr
, bcc_ofs
);
1654 needed
+= bcc
* sizeof(uint8_t);
1656 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1657 __location__
, (int)len
, (int)needed
));
1662 * we allocate 2 iovec structures for words and bytes
1664 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
1666 if (iov_tmp
== NULL
) {
1668 return NT_STATUS_NO_MEMORY
;
1671 cur
= &iov
[num_iov
];
1674 cur
[0].iov_len
= wct
* sizeof(uint16_t);
1675 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
1676 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
1677 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
1681 if (!smb1cli_is_andx_req(cmd
)) {
1683 * If the current command does not have AndX chanining
1689 if (wct
== 0 && bcc
== 0) {
1691 * An empty response also ends the chain,
1692 * most likely with an error.
1698 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
1699 __location__
, (int)wct
, (int)cmd
));
1702 cmd
= CVAL(cur
[0].iov_base
, 0);
1705 * If it is the end of the chain we are also done.
1709 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
1711 if (wct_ofs
< taken
) {
1712 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1714 if (wct_ofs
> buflen
) {
1715 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1719 * we consumed everything up to the start of the next
1725 remaining
= buflen
- taken
;
1727 if (remaining
> 0 && num_iov
>= 3) {
1729 * The last DATA block gets the remaining
1730 * bytes, this is needed to support
1731 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
1733 iov
[num_iov
-1].iov_len
+= remaining
;
1737 *pnum_iov
= num_iov
;
1738 return NT_STATUS_OK
;
1742 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1745 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1746 TALLOC_CTX
*tmp_mem
,
1749 struct tevent_req
*req
;
1750 struct smbXcli_req_state
*state
;
1757 const uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
1758 struct iovec
*iov
= NULL
;
1760 struct tevent_req
**chain
= NULL
;
1761 size_t num_chained
= 0;
1762 size_t num_responses
= 0;
1764 if (conn
->smb1
.read_braw_req
!= NULL
) {
1765 req
= conn
->smb1
.read_braw_req
;
1766 conn
->smb1
.read_braw_req
= NULL
;
1767 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1769 smbXcli_req_unset_pending(req
);
1771 if (state
->smb1
.recv_iov
== NULL
) {
1773 * For requests with more than
1774 * one response, we have to readd the
1777 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1780 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1781 return NT_STATUS_OK
;
1785 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inbuf
+ NBT_HDR_SIZE
);
1786 state
->smb1
.recv_iov
[0].iov_len
= smb_len_nbt(inbuf
);
1787 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
1788 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
1790 state
->smb1
.recv_cmd
= SMBreadBraw
;
1791 state
->smb1
.recv_status
= NT_STATUS_OK
;
1792 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1794 tevent_req_done(req
);
1795 return NT_STATUS_OK
;
1798 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
1799 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
1800 DEBUG(10, ("Got non-SMB PDU\n"));
1801 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1805 * If we supported multiple encrytion contexts
1806 * here we'd look up based on tid.
1808 if (common_encryption_on(conn
->smb1
.trans_enc
)
1809 && (CVAL(inbuf
, 0) == 0)) {
1810 uint16_t enc_ctx_num
;
1812 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
1813 if (!NT_STATUS_IS_OK(status
)) {
1814 DEBUG(10, ("get_enc_ctx_num returned %s\n",
1815 nt_errstr(status
)));
1819 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
1820 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
1822 conn
->smb1
.trans_enc
->enc_ctx_num
));
1823 return NT_STATUS_INVALID_HANDLE
;
1826 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
1828 if (!NT_STATUS_IS_OK(status
)) {
1829 DEBUG(10, ("common_decrypt_buffer returned %s\n",
1830 nt_errstr(status
)));
1835 mid
= SVAL(inhdr
, HDR_MID
);
1836 num_pending
= talloc_array_length(conn
->pending
);
1838 for (i
=0; i
<num_pending
; i
++) {
1839 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
1843 if (i
== num_pending
) {
1844 /* Dump unexpected reply */
1845 return NT_STATUS_RETRY
;
1848 oplock_break
= false;
1850 if (mid
== 0xffff) {
1852 * Paranoia checks that this is really an oplock break request.
1854 oplock_break
= (smb_len_nbt(inbuf
) == 51); /* hdr + 8 words */
1855 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
1856 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
1857 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
1858 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
1860 if (!oplock_break
) {
1861 /* Dump unexpected reply */
1862 return NT_STATUS_RETRY
;
1866 req
= conn
->pending
[i
];
1867 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1869 if (!oplock_break
/* oplock breaks are not signed */
1870 && !smb_signing_check_pdu(conn
->smb1
.signing
,
1871 inbuf
, state
->smb1
.seqnum
+1)) {
1872 DEBUG(10, ("cli_check_sign_mac failed\n"));
1873 return NT_STATUS_ACCESS_DENIED
;
1876 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
1878 if (!NT_STATUS_IS_OK(status
)) {
1879 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
1880 nt_errstr(status
)));
1884 cmd
= CVAL(inhdr
, HDR_COM
);
1885 status
= smb1cli_pull_raw_error(inhdr
);
1887 if (state
->smb1
.chained_requests
== NULL
) {
1889 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1892 smbXcli_req_unset_pending(req
);
1894 if (state
->smb1
.recv_iov
== NULL
) {
1896 * For requests with more than
1897 * one response, we have to readd the
1900 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1903 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1904 return NT_STATUS_OK
;
1908 state
->smb1
.recv_cmd
= cmd
;
1909 state
->smb1
.recv_status
= status
;
1910 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
1912 state
->smb1
.recv_iov
[0] = iov
[0];
1913 state
->smb1
.recv_iov
[1] = iov
[1];
1914 state
->smb1
.recv_iov
[2] = iov
[2];
1916 if (talloc_array_length(conn
->pending
) == 0) {
1917 tevent_req_done(req
);
1918 return NT_STATUS_OK
;
1921 tevent_req_defer_callback(req
, state
->ev
);
1922 tevent_req_done(req
);
1923 return NT_STATUS_RETRY
;
1926 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
1927 num_chained
= talloc_array_length(chain
);
1928 num_responses
= (num_iov
- 1)/2;
1930 if (num_responses
> num_chained
) {
1931 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1934 for (i
=0; i
<num_chained
; i
++) {
1935 size_t iov_idx
= 1 + (i
*2);
1936 struct iovec
*cur
= &iov
[iov_idx
];
1940 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1942 smbXcli_req_unset_pending(req
);
1945 * as we finish multiple requests here
1946 * we need to defer the callbacks as
1947 * they could destroy our current stack state.
1949 tevent_req_defer_callback(req
, state
->ev
);
1951 if (i
>= num_responses
) {
1952 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
1956 if (state
->smb1
.recv_iov
== NULL
) {
1958 * For requests with more than
1959 * one response, we have to readd the
1962 state
->smb1
.recv_iov
= talloc_zero_array(state
,
1965 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
1970 state
->smb1
.recv_cmd
= cmd
;
1972 if (i
== (num_responses
- 1)) {
1974 * The last request in the chain gets the status
1976 state
->smb1
.recv_status
= status
;
1978 cmd
= CVAL(cur
[0].iov_base
, 0);
1979 state
->smb1
.recv_status
= NT_STATUS_OK
;
1982 state
->inbuf
= inbuf
;
1985 * Note: here we use talloc_reference() in a way
1986 * that does not expose it to the caller.
1988 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
1989 if (tevent_req_nomem(inbuf_ref
, req
)) {
1993 /* copy the related buffers */
1994 state
->smb1
.recv_iov
[0] = iov
[0];
1995 state
->smb1
.recv_iov
[1] = cur
[0];
1996 state
->smb1
.recv_iov
[2] = cur
[1];
1998 tevent_req_done(req
);
2001 return NT_STATUS_RETRY
;
2004 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
2005 TALLOC_CTX
*mem_ctx
,
2006 struct iovec
**piov
,
2010 uint32_t *pvwv_offset
,
2011 uint32_t *pnum_bytes
,
2013 uint32_t *pbytes_offset
,
2015 const struct smb1cli_req_expected_response
*expected
,
2016 size_t num_expected
)
2018 struct smbXcli_req_state
*state
=
2019 tevent_req_data(req
,
2020 struct smbXcli_req_state
);
2021 NTSTATUS status
= NT_STATUS_OK
;
2022 struct iovec
*recv_iov
= NULL
;
2023 uint8_t *hdr
= NULL
;
2025 uint32_t vwv_offset
= 0;
2026 uint16_t *vwv
= NULL
;
2027 uint32_t num_bytes
= 0;
2028 uint32_t bytes_offset
= 0;
2029 uint8_t *bytes
= NULL
;
2031 bool found_status
= false;
2032 bool found_size
= false;
2046 if (pvwv_offset
!= NULL
) {
2049 if (pnum_bytes
!= NULL
) {
2052 if (pbytes
!= NULL
) {
2055 if (pbytes_offset
!= NULL
) {
2058 if (pinbuf
!= NULL
) {
2062 if (state
->inbuf
!= NULL
) {
2063 recv_iov
= state
->smb1
.recv_iov
;
2064 state
->smb1
.recv_iov
= NULL
;
2065 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2066 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2067 wct
= recv_iov
[1].iov_len
/2;
2068 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2069 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2070 num_bytes
= recv_iov
[2].iov_len
;
2071 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2072 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2076 if (tevent_req_is_nterror(req
, &status
)) {
2077 for (i
=0; i
< num_expected
; i
++) {
2078 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2079 found_status
= true;
2085 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2091 if (num_expected
== 0) {
2092 found_status
= true;
2096 status
= state
->smb1
.recv_status
;
2098 for (i
=0; i
< num_expected
; i
++) {
2099 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2103 found_status
= true;
2104 if (expected
[i
].wct
== 0) {
2109 if (expected
[i
].wct
== wct
) {
2115 if (!found_status
) {
2120 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2124 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2136 if (pvwv_offset
!= NULL
) {
2137 *pvwv_offset
= vwv_offset
;
2139 if (pnum_bytes
!= NULL
) {
2140 *pnum_bytes
= num_bytes
;
2142 if (pbytes
!= NULL
) {
2145 if (pbytes_offset
!= NULL
) {
2146 *pbytes_offset
= bytes_offset
;
2148 if (pinbuf
!= NULL
) {
2149 *pinbuf
= state
->inbuf
;
2155 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2162 for (i
=0; i
<num_reqs
; i
++) {
2163 struct smbXcli_req_state
*state
;
2164 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2165 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2166 state
->smb1
.iov_count
-2);
2167 wct_ofs
= (wct_ofs
+ 3) & ~3;
2172 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2174 struct smbXcli_req_state
*first_state
=
2175 tevent_req_data(reqs
[0],
2176 struct smbXcli_req_state
);
2177 struct smbXcli_req_state
*state
;
2179 size_t chain_padding
= 0;
2181 struct iovec
*iov
= NULL
;
2182 struct iovec
*this_iov
;
2186 if (num_reqs
== 1) {
2187 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2188 first_state
->smb1
.iov
,
2189 first_state
->smb1
.iov_count
);
2193 for (i
=0; i
<num_reqs
; i
++) {
2194 if (!tevent_req_is_in_progress(reqs
[i
])) {
2195 return NT_STATUS_INTERNAL_ERROR
;
2198 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2200 if (state
->smb1
.iov_count
< 4) {
2201 return NT_STATUS_INVALID_PARAMETER_MIX
;
2206 * The NBT and SMB header
2219 iovlen
+= state
->smb1
.iov_count
- 2;
2222 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2224 return NT_STATUS_NO_MEMORY
;
2227 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2228 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2229 if (first_state
->smb1
.chained_requests
== NULL
) {
2231 return NT_STATUS_NO_MEMORY
;
2234 wct_offset
= HDR_WCT
;
2237 for (i
=0; i
<num_reqs
; i
++) {
2238 size_t next_padding
= 0;
2241 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2243 if (i
< num_reqs
-1) {
2244 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2245 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2247 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2248 return NT_STATUS_INVALID_PARAMETER_MIX
;
2252 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2253 state
->smb1
.iov_count
-2) + 1;
2254 if ((wct_offset
% 4) != 0) {
2255 next_padding
= 4 - (wct_offset
% 4);
2257 wct_offset
+= next_padding
;
2258 vwv
= state
->smb1
.vwv
;
2260 if (i
< num_reqs
-1) {
2261 struct smbXcli_req_state
*next_state
=
2262 tevent_req_data(reqs
[i
+1],
2263 struct smbXcli_req_state
);
2264 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2266 SSVAL(vwv
+1, 0, wct_offset
);
2267 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2268 /* properly end the chain */
2269 SCVAL(vwv
+0, 0, 0xff);
2270 SCVAL(vwv
+0, 1, 0xff);
2276 * The NBT and SMB header
2278 this_iov
[0] = state
->smb1
.iov
[0];
2279 this_iov
[1] = state
->smb1
.iov
[1];
2283 * This one is a bit subtle. We have to add
2284 * chain_padding bytes between the requests, and we
2285 * have to also include the wct field of the
2286 * subsequent requests. We use the subsequent header
2287 * for the padding, it contains the wct field in its
2290 this_iov
[0].iov_len
= chain_padding
+1;
2291 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2292 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2293 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2298 * copy the words and bytes
2300 memcpy(this_iov
, state
->smb1
.iov
+2,
2301 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2302 this_iov
+= state
->smb1
.iov_count
- 2;
2303 chain_padding
= next_padding
;
2306 nbt_len
= smbXcli_iov_len(&iov
[1], iovlen
-1);
2307 if (nbt_len
> first_state
->conn
->smb1
.max_xmit
) {
2309 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2310 return NT_STATUS_INVALID_PARAMETER_MIX
;
2313 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2314 if (!NT_STATUS_IS_OK(status
)) {
2316 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2320 return NT_STATUS_OK
;
2323 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2325 return ((tevent_queue_length(conn
->outgoing
) != 0)
2326 || (talloc_array_length(conn
->pending
) != 0));
2329 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2331 return conn
->smb2
.server
.capabilities
;
2334 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2336 return conn
->smb2
.server
.security_mode
;
2339 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2341 return conn
->smb2
.server
.max_trans_size
;
2344 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2346 return conn
->smb2
.server
.max_read_size
;
2349 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2351 return conn
->smb2
.server
.max_write_size
;
2354 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2355 uint16_t max_credits
)
2357 conn
->smb2
.max_credits
= max_credits
;
2360 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2362 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2364 struct smbXcli_req_state
*state
=
2365 tevent_req_data(req
,
2366 struct smbXcli_req_state
);
2367 uint32_t flags
= IVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
2368 uint32_t pid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_PID
);
2369 uint32_t tid
= IVAL(state
->smb2
.hdr
, SMB2_HDR_TID
);
2370 uint64_t mid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
);
2371 uint64_t aid
= BVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
);
2372 struct smbXcli_session
*session
= state
->session
;
2373 uint8_t *fixed
= state
->smb2
.pad
;
2374 uint16_t fixed_len
= 4;
2375 struct tevent_req
*subreq
;
2376 struct smbXcli_req_state
*substate
;
2379 SSVAL(fixed
, 0, 0x04);
2382 subreq
= smb2cli_req_create(state
, state
->ev
,
2390 if (subreq
== NULL
) {
2393 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2395 if (flags
& SMB2_HDR_FLAG_ASYNC
) {
2399 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2400 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2401 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2402 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2403 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, aid
);
2405 status
= smb2cli_req_compound_submit(&subreq
, 1);
2406 if (!NT_STATUS_IS_OK(status
)) {
2407 TALLOC_FREE(subreq
);
2411 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2416 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2418 /* we do not care about the result */
2419 TALLOC_FREE(subreq
);
2422 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2423 struct tevent_context
*ev
,
2424 struct smbXcli_conn
*conn
,
2426 uint32_t additional_flags
,
2427 uint32_t clear_flags
,
2428 uint32_t timeout_msec
,
2431 struct smbXcli_session
*session
,
2432 const uint8_t *fixed
,
2437 struct tevent_req
*req
;
2438 struct smbXcli_req_state
*state
;
2442 req
= tevent_req_create(mem_ctx
, &state
,
2443 struct smbXcli_req_state
);
2450 state
->session
= session
;
2453 uid
= session
->smb2
.session_id
;
2455 state
->smb2
.should_sign
= session
->smb2
.should_sign
;
2456 state
->smb2
.should_encrypt
= session
->smb2
.should_encrypt
;
2458 /* TODO: turn on encryption based on the tree connect. */
2460 if (cmd
== SMB2_OP_SESSSETUP
&&
2461 session
->smb2
.signing_key
.length
!= 0) {
2462 state
->smb2
.should_sign
= true;
2465 if (cmd
== SMB2_OP_SESSSETUP
&&
2466 session
->smb2
.channel_signing_key
.length
== 0) {
2467 state
->smb2
.should_encrypt
= false;
2470 if (state
->smb2
.should_encrypt
) {
2471 state
->smb2
.should_sign
= false;
2475 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
2476 if (state
->smb2
.recv_iov
== NULL
) {
2481 flags
|= additional_flags
;
2482 flags
&= ~clear_flags
;
2484 state
->smb2
.fixed
= fixed
;
2485 state
->smb2
.fixed_len
= fixed_len
;
2486 state
->smb2
.dyn
= dyn
;
2487 state
->smb2
.dyn_len
= dyn_len
;
2489 if (state
->smb2
.should_encrypt
) {
2490 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
2491 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
2494 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
2495 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
2496 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
2497 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
2498 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, pid
);
2499 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
2500 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
2503 case SMB2_OP_CANCEL
:
2504 state
->one_way
= true;
2508 * If this is a dummy request, it will have
2509 * UINT64_MAX as message id.
2510 * If we send on break acknowledgement,
2511 * this gets overwritten later.
2513 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
2517 if (timeout_msec
> 0) {
2518 struct timeval endtime
;
2520 endtime
= timeval_current_ofs_msec(timeout_msec
);
2521 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
2529 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
2531 struct smbXcli_req_state
*state
=
2532 tevent_req_data(req
,
2533 struct smbXcli_req_state
);
2535 state
->smb2
.notify_async
= true;
2538 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
2539 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2540 TALLOC_CTX
*tmp_mem
,
2543 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
2546 struct smbXcli_req_state
*state
;
2547 struct tevent_req
*subreq
;
2549 int i
, num_iov
, nbt_len
;
2552 * 1 for the nbt length
2553 * per request: TRANSFORM, HDR, fixed, dyn, padding
2554 * -1 because the last one does not need padding
2557 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 5*num_reqs
- 1);
2559 return NT_STATUS_NO_MEMORY
;
2565 for (i
=0; i
<num_reqs
; i
++) {
2575 const DATA_BLOB
*signing_key
= NULL
;
2576 const DATA_BLOB
*encryption_key
= NULL
;
2578 if (!tevent_req_is_in_progress(reqs
[i
])) {
2579 return NT_STATUS_INTERNAL_ERROR
;
2582 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2584 if (!smbXcli_conn_is_connected(state
->conn
)) {
2585 return NT_STATUS_CONNECTION_DISCONNECTED
;
2588 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
2589 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
2590 return NT_STATUS_REVISION_MISMATCH
;
2593 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
2594 if (opcode
== SMB2_OP_CANCEL
) {
2598 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
2600 return NT_STATUS_CONNECTION_ABORTED
;
2603 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2604 charge
= (MAX(state
->smb2
.dyn_len
, 1) - 1)/ 65536 + 1;
2609 charge
= MAX(state
->smb2
.credit_charge
, charge
);
2611 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
2612 if (avail
< charge
) {
2613 return NT_STATUS_INTERNAL_ERROR
;
2617 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
2618 credits
= state
->conn
->smb2
.max_credits
-
2619 state
->conn
->smb2
.cur_credits
;
2621 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
2625 mid
= state
->conn
->smb2
.mid
;
2626 state
->conn
->smb2
.mid
+= charge
;
2627 state
->conn
->smb2
.cur_credits
-= charge
;
2629 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2630 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
2632 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
2633 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
2636 if (state
->session
) {
2638 * We prefer the channel signing key if it is
2641 if (state
->smb2
.should_sign
) {
2642 signing_key
= &state
->session
->smb2
.channel_signing_key
;
2646 * If it is a channel binding, we already have the main
2647 * signing key and try that one.
2649 if (signing_key
&& signing_key
->length
== 0) {
2650 signing_key
= &state
->session
->smb2
.signing_key
;
2654 * If we do not have any session key yet, we skip the
2655 * signing of SMB2_OP_SESSSETUP requests.
2657 if (signing_key
&& signing_key
->length
== 0) {
2661 if (state
->smb2
.should_encrypt
) {
2662 encryption_key
= &state
->session
->smb2
.encryption_key
;
2666 if (encryption_key
) {
2668 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
2669 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
2674 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
2675 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
2678 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
2679 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
2682 if (state
->smb2
.dyn
!= NULL
) {
2683 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
2684 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
2688 reqlen
= sizeof(state
->smb2
.hdr
);
2689 reqlen
+= state
->smb2
.fixed_len
;
2690 reqlen
+= state
->smb2
.dyn_len
;
2692 if (i
< num_reqs
-1) {
2693 if ((reqlen
% 8) > 0) {
2694 uint8_t pad
= 8 - (reqlen
% 8);
2695 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
2696 iov
[num_iov
].iov_len
= pad
;
2700 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
2703 if (encryption_key
) {
2708 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
, mid
);
2709 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
2710 state
->session
->smb2
.channel_nonce
);
2711 SBVAL(state
->smb2
.transform
, SMB2_TF_MSG_SIZE
,
2714 buf
= talloc_array(iov
, uint8_t, reqlen
);
2716 return NT_STATUS_NO_MEMORY
;
2719 reqlen
+= SMB2_TF_HDR_SIZE
;
2722 * We copy the buffers before encrypting them,
2723 * this is at least currently needed for the
2724 * to keep state->smb2.hdr.
2726 * Also the callers may expect there buffers
2729 for (vi
= hdr_iov
; vi
< num_iov
; vi
++) {
2730 struct iovec
*v
= &iov
[vi
];
2731 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
2733 memcpy(buf
, o
, v
->iov_len
);
2734 v
->iov_base
= (void *)buf
;
2738 status
= smb2_signing_encrypt_pdu(*encryption_key
,
2739 state
->session
->conn
->protocol
,
2740 &iov
[tf_iov
], num_iov
- tf_iov
);
2741 if (!NT_STATUS_IS_OK(status
)) {
2744 } else if (signing_key
) {
2747 status
= smb2_signing_sign_pdu(*signing_key
,
2748 state
->session
->conn
->protocol
,
2749 &iov
[hdr_iov
], num_iov
- hdr_iov
);
2750 if (!NT_STATUS_IS_OK(status
)) {
2757 ret
= smbXcli_req_set_pending(reqs
[i
]);
2759 return NT_STATUS_NO_MEMORY
;
2763 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
2764 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
2765 iov
[0].iov_base
= state
->length_hdr
;
2766 iov
[0].iov_len
= sizeof(state
->length_hdr
);
2768 if (state
->conn
->dispatch_incoming
== NULL
) {
2769 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
2772 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
2773 state
->conn
->write_fd
, false, iov
, num_iov
);
2774 if (subreq
== NULL
) {
2775 return NT_STATUS_NO_MEMORY
;
2777 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
2778 return NT_STATUS_OK
;
2781 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
2783 struct smbXcli_req_state
*state
=
2784 tevent_req_data(req
,
2785 struct smbXcli_req_state
);
2787 state
->smb2
.credit_charge
= charge
;
2790 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
2791 struct tevent_context
*ev
,
2792 struct smbXcli_conn
*conn
,
2794 uint32_t additional_flags
,
2795 uint32_t clear_flags
,
2796 uint32_t timeout_msec
,
2799 struct smbXcli_session
*session
,
2800 const uint8_t *fixed
,
2805 struct tevent_req
*req
;
2808 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
2809 additional_flags
, clear_flags
,
2812 fixed
, fixed_len
, dyn
, dyn_len
);
2816 if (!tevent_req_is_in_progress(req
)) {
2817 return tevent_req_post(req
, ev
);
2819 status
= smb2cli_req_compound_submit(&req
, 1);
2820 if (tevent_req_nterror(req
, status
)) {
2821 return tevent_req_post(req
, ev
);
2826 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
2828 struct tevent_req
*req
=
2829 tevent_req_callback_data(subreq
,
2831 struct smbXcli_req_state
*state
=
2832 tevent_req_data(req
,
2833 struct smbXcli_req_state
);
2837 nwritten
= writev_recv(subreq
, &err
);
2838 TALLOC_FREE(subreq
);
2839 if (nwritten
== -1) {
2840 /* here, we need to notify all pending requests */
2841 NTSTATUS status
= map_nt_error_from_unix_common(err
);
2842 smbXcli_conn_disconnect(state
->conn
, status
);
2847 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
2850 TALLOC_CTX
*mem_ctx
,
2851 struct iovec
**piov
, int *pnum_iov
)
2856 uint8_t *first_hdr
= buf
;
2858 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
2860 return NT_STATUS_NO_MEMORY
;
2863 while (taken
< buflen
) {
2866 size_t len
= buflen
- taken
;
2867 uint8_t *hdr
= first_hdr
+ taken
;
2870 size_t next_command_ofs
;
2872 struct iovec
*iov_tmp
;
2875 DEBUG(10, ("%d bytes left, expected at least %d\n",
2879 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
2880 struct smbXcli_session
*s
;
2882 struct iovec tf_iov
[2];
2885 if (len
< SMB2_TF_HDR_SIZE
) {
2886 DEBUG(10, ("%d bytes left, expected at least %d\n",
2887 (int)len
, SMB2_TF_HDR_SIZE
));
2891 tf_len
= SMB2_TF_HDR_SIZE
;
2894 hdr
= first_hdr
+ taken
;
2895 len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
2896 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
2899 for (; s
; s
= s
->next
) {
2900 if (s
->smb2
.session_id
!= uid
) {
2907 DEBUG(10, ("unknown session_id %llu\n",
2908 (unsigned long long)uid
));
2912 tf_iov
[0].iov_base
= (void *)tf
;
2913 tf_iov
[0].iov_len
= tf_len
;
2914 tf_iov
[1].iov_base
= (void *)hdr
;
2915 tf_iov
[1].iov_len
= len
;
2917 status
= smb2_signing_decrypt_pdu(s
->smb2
.decryption_key
,
2920 if (!NT_STATUS_IS_OK(status
)) {
2927 * We need the header plus the body length field
2930 if (len
< SMB2_HDR_BODY
+ 2) {
2931 DEBUG(10, ("%d bytes left, expected at least %d\n",
2932 (int)len
, SMB2_HDR_BODY
));
2935 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
2936 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
2940 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
2941 DEBUG(10, ("Got HDR len %d, expected %d\n",
2942 SVAL(hdr
, 4), SMB2_HDR_BODY
));
2947 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
2948 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
2950 if (next_command_ofs
!= 0) {
2951 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
2954 if (next_command_ofs
> full_size
) {
2957 if (tf
&& next_command_ofs
< len
) {
2960 full_size
= next_command_ofs
;
2962 if (body_size
< 2) {
2965 body_size
&= 0xfffe;
2967 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
2971 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2973 if (iov_tmp
== NULL
) {
2975 return NT_STATUS_NO_MEMORY
;
2978 cur
= &iov
[num_iov
];
2981 cur
[0].iov_base
= tf
;
2982 cur
[0].iov_len
= tf_len
;
2983 cur
[1].iov_base
= hdr
;
2984 cur
[1].iov_len
= SMB2_HDR_BODY
;
2985 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
2986 cur
[2].iov_len
= body_size
;
2987 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
2988 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
2994 *pnum_iov
= num_iov
;
2995 return NT_STATUS_OK
;
2999 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3002 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
3005 size_t num_pending
= talloc_array_length(conn
->pending
);
3008 for (i
=0; i
<num_pending
; i
++) {
3009 struct tevent_req
*req
= conn
->pending
[i
];
3010 struct smbXcli_req_state
*state
=
3011 tevent_req_data(req
,
3012 struct smbXcli_req_state
);
3014 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
3021 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3022 TALLOC_CTX
*tmp_mem
,
3025 struct tevent_req
*req
;
3026 struct smbXcli_req_state
*state
= NULL
;
3031 struct smbXcli_session
*last_session
= NULL
;
3032 size_t inbuf_len
= smb_len_tcp(inbuf
);
3034 status
= smb2cli_inbuf_parse_compound(conn
,
3035 inbuf
+ NBT_HDR_SIZE
,
3039 if (!NT_STATUS_IS_OK(status
)) {
3043 for (i
=0; i
<num_iov
; i
+=4) {
3044 uint8_t *inbuf_ref
= NULL
;
3045 struct iovec
*cur
= &iov
[i
];
3046 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3047 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3048 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3049 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3050 uint16_t req_opcode
;
3052 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3053 uint32_t new_credits
;
3054 struct smbXcli_session
*session
= NULL
;
3055 const DATA_BLOB
*signing_key
= NULL
;
3057 new_credits
= conn
->smb2
.cur_credits
;
3058 new_credits
+= credits
;
3059 if (new_credits
> UINT16_MAX
) {
3060 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3062 conn
->smb2
.cur_credits
+= credits
;
3064 req
= smb2cli_conn_find_pending(conn
, mid
);
3066 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3068 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3070 state
->smb2
.got_async
= false;
3072 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3073 if (opcode
!= req_opcode
) {
3074 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3076 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3078 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3079 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3082 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3083 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3084 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3085 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3088 * async interim responses are not signed,
3089 * even if the SMB2_HDR_FLAG_SIGNED flag
3092 req_flags
|= SMB2_HDR_FLAG_ASYNC
;
3093 SBVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, req_flags
);
3094 SBVAL(state
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, async_id
);
3096 if (state
->smb2
.notify_async
) {
3097 state
->smb2
.got_async
= true;
3098 tevent_req_defer_callback(req
, state
->ev
);
3099 tevent_req_notify_callback(req
);
3104 session
= state
->session
;
3105 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3106 session
= last_session
;
3108 last_session
= session
;
3110 if (state
->smb2
.should_sign
) {
3111 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3112 return NT_STATUS_ACCESS_DENIED
;
3116 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3117 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3119 if (session
== NULL
) {
3120 struct smbXcli_session
*s
;
3122 s
= state
->conn
->sessions
;
3123 for (; s
; s
= s
->next
) {
3124 if (s
->smb2
.session_id
!= uid
) {
3133 if (session
== NULL
) {
3134 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3137 last_session
= session
;
3138 signing_key
= &session
->smb2
.channel_signing_key
;
3141 if (opcode
== SMB2_OP_SESSSETUP
) {
3143 * We prefer the channel signing key, if it is
3146 * If we do not have a channel signing key yet,
3147 * we try the main signing key, if it is not
3148 * the final response.
3150 if (signing_key
&& signing_key
->length
== 0 &&
3151 !NT_STATUS_IS_OK(status
)) {
3152 signing_key
= &session
->smb2
.signing_key
;
3155 if (signing_key
&& signing_key
->length
== 0) {
3157 * If we do not have a session key to
3158 * verify the signature, we defer the
3159 * signing check to the caller.
3161 * The caller gets NT_STATUS_OK, it
3163 * smb2cli_session_set_session_key()
3165 * smb2cli_session_set_channel_key()
3166 * which will check the signature
3167 * with the channel signing key.
3173 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3175 * if the server returns NT_STATUS_USER_SESSION_DELETED
3176 * the response is not signed and we should
3177 * propagate the NT_STATUS_USER_SESSION_DELETED
3178 * status to the caller.
3181 } else if (state
->smb2
.should_encrypt
) {
3182 if (cur
[0].iov_len
!= SMB2_TF_HDR_SIZE
) {
3183 return NT_STATUS_ACCESS_DENIED
;
3187 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3188 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3189 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3191 * if the server returns
3192 * NT_STATUS_NETWORK_NAME_DELETED
3193 * NT_STATUS_FILE_CLOSED
3194 * NT_STATUS_INVALID_PARAMETER
3195 * the response might not be signed
3196 * as this happens before the signing checks.
3198 * If server echos the signature (or all zeros)
3199 * we should report the status from the server
3205 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3206 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3209 state
->smb2
.signing_skipped
= true;
3215 static const uint8_t zeros
[16];
3217 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3221 state
->smb2
.signing_skipped
= true;
3228 status
= smb2_signing_check_pdu(*signing_key
,
3229 state
->conn
->protocol
,
3231 if (!NT_STATUS_IS_OK(status
)) {
3233 * If the signing check fails, we disconnect
3240 smbXcli_req_unset_pending(req
);
3243 * There might be more than one response
3244 * we need to defer the notifications
3246 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3251 tevent_req_defer_callback(req
, state
->ev
);
3255 * Note: here we use talloc_reference() in a way
3256 * that does not expose it to the caller.
3258 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3259 if (tevent_req_nomem(inbuf_ref
, req
)) {
3263 /* copy the related buffers */
3264 state
->smb2
.recv_iov
[0] = cur
[1];
3265 state
->smb2
.recv_iov
[1] = cur
[2];
3266 state
->smb2
.recv_iov
[2] = cur
[3];
3268 tevent_req_done(req
);
3272 return NT_STATUS_RETRY
;
3275 return NT_STATUS_OK
;
3278 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3279 struct iovec
**piov
,
3280 const struct smb2cli_req_expected_response
*expected
,
3281 size_t num_expected
)
3283 struct smbXcli_req_state
*state
=
3284 tevent_req_data(req
,
3285 struct smbXcli_req_state
);
3288 bool found_status
= false;
3289 bool found_size
= false;
3296 if (state
->smb2
.got_async
) {
3297 return STATUS_PENDING
;
3300 if (tevent_req_is_nterror(req
, &status
)) {
3301 for (i
=0; i
< num_expected
; i
++) {
3302 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3303 found_status
= true;
3309 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3315 if (num_expected
== 0) {
3316 found_status
= true;
3320 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
3321 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
3323 for (i
=0; i
< num_expected
; i
++) {
3324 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3328 found_status
= true;
3329 if (expected
[i
].body_size
== 0) {
3334 if (expected
[i
].body_size
== body_size
) {
3340 if (!found_status
) {
3344 if (state
->smb2
.signing_skipped
) {
3345 if (num_expected
> 0) {
3346 return NT_STATUS_ACCESS_DENIED
;
3348 if (!NT_STATUS_IS_ERR(status
)) {
3349 return NT_STATUS_ACCESS_DENIED
;
3354 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3358 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
3364 static const struct {
3365 enum protocol_types proto
;
3366 const char *smb1_name
;
3367 } smb1cli_prots
[] = {
3368 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
3369 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
3370 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
3371 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
3372 {PROTOCOL_LANMAN2
, "LM1.2X002"},
3373 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
3374 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
3375 {PROTOCOL_LANMAN2
, "Samba"},
3376 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
3377 {PROTOCOL_NT1
, "NT LM 0.12"},
3378 {PROTOCOL_SMB2_02
, "SMB 2.002"},
3379 {PROTOCOL_SMB2_10
, "SMB 2.???"},
3382 static const struct {
3383 enum protocol_types proto
;
3384 uint16_t smb2_dialect
;
3385 } smb2cli_prots
[] = {
3386 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
3387 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
3388 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
3389 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
3390 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
3393 struct smbXcli_negprot_state
{
3394 struct smbXcli_conn
*conn
;
3395 struct tevent_context
*ev
;
3396 uint32_t timeout_msec
;
3397 enum protocol_types min_protocol
;
3398 enum protocol_types max_protocol
;
3402 uint8_t dyn
[ARRAY_SIZE(smb2cli_prots
)*2];
3406 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
3407 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
3408 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
3409 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
3410 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
3411 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
3415 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
3416 struct tevent_context
*ev
,
3417 struct smbXcli_conn
*conn
,
3418 uint32_t timeout_msec
,
3419 enum protocol_types min_protocol
,
3420 enum protocol_types max_protocol
)
3422 struct tevent_req
*req
, *subreq
;
3423 struct smbXcli_negprot_state
*state
;
3425 req
= tevent_req_create(mem_ctx
, &state
,
3426 struct smbXcli_negprot_state
);
3432 state
->timeout_msec
= timeout_msec
;
3433 state
->min_protocol
= min_protocol
;
3434 state
->max_protocol
= max_protocol
;
3436 if (min_protocol
== PROTOCOL_NONE
) {
3437 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3438 return tevent_req_post(req
, ev
);
3441 if (max_protocol
== PROTOCOL_NONE
) {
3442 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3443 return tevent_req_post(req
, ev
);
3446 if (min_protocol
> max_protocol
) {
3447 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
3448 return tevent_req_post(req
, ev
);
3451 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
3452 (max_protocol
< PROTOCOL_SMB2_02
)) {
3456 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
3458 subreq
= smbXcli_negprot_smb1_subreq(state
);
3459 if (tevent_req_nomem(subreq
, req
)) {
3460 return tevent_req_post(req
, ev
);
3462 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
3466 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
3467 (max_protocol
>= PROTOCOL_SMB2_02
)) {
3471 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3473 subreq
= smbXcli_negprot_smb2_subreq(state
);
3474 if (tevent_req_nomem(subreq
, req
)) {
3475 return tevent_req_post(req
, ev
);
3477 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
3482 * We send an SMB1 negprot with the SMB2 dialects
3483 * and expect a SMB1 or a SMB2 response.
3485 * smbXcli_negprot_dispatch_incoming() will fix the
3486 * callback to match protocol of the response.
3488 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
3490 subreq
= smbXcli_negprot_smb1_subreq(state
);
3491 if (tevent_req_nomem(subreq
, req
)) {
3492 return tevent_req_post(req
, ev
);
3494 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
3498 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
3500 struct tevent_req
*req
=
3501 tevent_req_callback_data(subreq
,
3506 * we just want the low level error
3508 status
= tevent_req_simple_recv_ntstatus(subreq
);
3509 TALLOC_FREE(subreq
);
3510 if (tevent_req_nterror(req
, status
)) {
3514 /* this should never happen */
3515 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
3518 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
3521 DATA_BLOB bytes
= data_blob_null
;
3525 /* setup the protocol strings */
3526 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3530 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3534 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3538 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
3544 * We now it is already ascii and
3545 * we want NULL termination.
3547 ok
= data_blob_append(state
, &bytes
,
3548 smb1cli_prots
[i
].smb1_name
,
3549 strlen(smb1cli_prots
[i
].smb1_name
)+1);
3555 smb1cli_req_flags(state
->max_protocol
,
3556 state
->conn
->smb1
.client
.capabilities
,
3561 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
3565 state
->timeout_msec
,
3566 0xFFFE, 0, NULL
, /* pid, tid, session */
3567 0, NULL
, /* wct, vwv */
3568 bytes
.length
, bytes
.data
);
3571 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
3573 struct tevent_req
*req
=
3574 tevent_req_callback_data(subreq
,
3576 struct smbXcli_negprot_state
*state
=
3577 tevent_req_data(req
,
3578 struct smbXcli_negprot_state
);
3579 struct smbXcli_conn
*conn
= state
->conn
;
3580 struct iovec
*recv_iov
= NULL
;
3589 size_t num_prots
= 0;
3591 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
3592 uint32_t both_capabilities
;
3593 uint32_t server_capabilities
= 0;
3594 uint32_t capabilities
;
3595 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
3596 uint32_t server_max_xmit
= 0;
3598 uint32_t server_max_mux
= 0;
3599 uint16_t server_security_mode
= 0;
3600 uint32_t server_session_key
= 0;
3601 bool server_readbraw
= false;
3602 bool server_writebraw
= false;
3603 bool server_lockread
= false;
3604 bool server_writeunlock
= false;
3605 struct GUID server_guid
= GUID_zero();
3606 DATA_BLOB server_gss_blob
= data_blob_null
;
3607 uint8_t server_challenge
[8];
3608 char *server_workgroup
= NULL
;
3609 char *server_name
= NULL
;
3610 int server_time_zone
= 0;
3611 NTTIME server_system_time
= 0;
3612 static const struct smb1cli_req_expected_response expected
[] = {
3614 .status
= NT_STATUS_OK
,
3615 .wct
= 0x11, /* NT1 */
3618 .status
= NT_STATUS_OK
,
3619 .wct
= 0x0D, /* LM */
3622 .status
= NT_STATUS_OK
,
3623 .wct
= 0x01, /* CORE */
3627 ZERO_STRUCT(server_challenge
);
3629 status
= smb1cli_req_recv(subreq
, state
,
3634 NULL
, /* pvwv_offset */
3637 NULL
, /* pbytes_offset */
3639 expected
, ARRAY_SIZE(expected
));
3640 TALLOC_FREE(subreq
);
3641 if (tevent_req_nterror(req
, status
)) {
3645 flags
= CVAL(inhdr
, HDR_FLG
);
3647 protnum
= SVAL(vwv
, 0);
3649 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
3650 if (smb1cli_prots
[i
].proto
< state
->min_protocol
) {
3654 if (smb1cli_prots
[i
].proto
> state
->max_protocol
) {
3658 if (protnum
!= num_prots
) {
3663 conn
->protocol
= smb1cli_prots
[i
].proto
;
3667 if (conn
->protocol
== PROTOCOL_NONE
) {
3668 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3672 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
3673 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
3674 "and the selected protocol level doesn't support it.\n"));
3675 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3679 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
3680 server_lockread
= true;
3681 server_writeunlock
= true;
3684 if (conn
->protocol
>= PROTOCOL_NT1
) {
3685 const char *client_signing
= NULL
;
3686 bool server_mandatory
= false;
3687 bool server_allowed
= false;
3688 const char *server_signing
= NULL
;
3693 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3698 server_security_mode
= CVAL(vwv
+ 1, 0);
3699 server_max_mux
= SVAL(vwv
+ 1, 1);
3700 server_max_xmit
= IVAL(vwv
+ 3, 1);
3701 server_session_key
= IVAL(vwv
+ 7, 1);
3702 server_time_zone
= SVALS(vwv
+ 15, 1);
3703 server_time_zone
*= 60;
3704 /* this time arrives in real GMT */
3705 server_system_time
= BVAL(vwv
+ 11, 1);
3706 server_capabilities
= IVAL(vwv
+ 9, 1);
3708 key_len
= CVAL(vwv
+ 16, 1);
3710 if (server_capabilities
& CAP_RAW_MODE
) {
3711 server_readbraw
= true;
3712 server_writebraw
= true;
3714 if (server_capabilities
& CAP_LOCK_AND_READ
) {
3715 server_lockread
= true;
3718 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
3719 DATA_BLOB blob1
, blob2
;
3721 if (num_bytes
< 16) {
3722 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3726 blob1
= data_blob_const(bytes
, 16);
3727 status
= GUID_from_data_blob(&blob1
, &server_guid
);
3728 if (tevent_req_nterror(req
, status
)) {
3732 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
3733 blob2
= data_blob_dup_talloc(state
, blob1
);
3734 if (blob1
.length
> 0 &&
3735 tevent_req_nomem(blob2
.data
, req
)) {
3738 server_gss_blob
= blob2
;
3740 DATA_BLOB blob1
, blob2
;
3742 if (num_bytes
< key_len
) {
3743 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3747 if (key_len
!= 0 && key_len
!= 8) {
3748 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3753 memcpy(server_challenge
, bytes
, 8);
3756 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3757 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3758 if (blob1
.length
> 0) {
3761 len
= utf16_len_n(blob1
.data
,
3765 ok
= convert_string_talloc(state
,
3773 status
= map_nt_error_from_unix_common(errno
);
3774 tevent_req_nterror(req
, status
);
3779 blob2
.data
+= blob1
.length
;
3780 blob2
.length
-= blob1
.length
;
3781 if (blob2
.length
> 0) {
3784 len
= utf16_len_n(blob1
.data
,
3788 ok
= convert_string_talloc(state
,
3796 status
= map_nt_error_from_unix_common(errno
);
3797 tevent_req_nterror(req
, status
);
3803 client_signing
= "disabled";
3804 if (conn
->allow_signing
) {
3805 client_signing
= "allowed";
3807 if (conn
->mandatory_signing
) {
3808 client_signing
= "required";
3811 server_signing
= "not supported";
3812 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
3813 server_signing
= "supported";
3814 server_allowed
= true;
3816 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
3817 server_signing
= "required";
3818 server_mandatory
= true;
3821 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
3825 DEBUG(1,("cli_negprot: SMB signing is required, "
3826 "but client[%s] and server[%s] mismatch\n",
3827 client_signing
, server_signing
));
3828 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
3832 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
3838 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3842 server_security_mode
= SVAL(vwv
+ 1, 0);
3843 server_max_xmit
= SVAL(vwv
+ 2, 0);
3844 server_max_mux
= SVAL(vwv
+ 3, 0);
3845 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
3846 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
3847 server_session_key
= IVAL(vwv
+ 6, 0);
3848 server_time_zone
= SVALS(vwv
+ 10, 0);
3849 server_time_zone
*= 60;
3850 /* this time is converted to GMT by make_unix_date */
3851 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
3852 unix_to_nt_time(&server_system_time
, t
);
3853 key_len
= SVAL(vwv
+ 11, 0);
3855 if (num_bytes
< key_len
) {
3856 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3860 if (key_len
!= 0 && key_len
!= 8) {
3861 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3866 memcpy(server_challenge
, bytes
, 8);
3869 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
3870 if (blob1
.length
> 0) {
3874 len
= utf16_len_n(blob1
.data
,
3878 ok
= convert_string_talloc(state
,
3886 status
= map_nt_error_from_unix_common(errno
);
3887 tevent_req_nterror(req
, status
);
3893 /* the old core protocol */
3894 server_time_zone
= get_time_zone(time(NULL
));
3895 server_max_xmit
= 1024;
3899 if (server_max_xmit
< 1024) {
3900 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3904 if (server_max_mux
< 1) {
3905 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
3910 * Now calculate the negotiated capabilities
3911 * based on the mask for:
3912 * - client only flags
3913 * - flags used in both directions
3914 * - server only flags
3916 both_capabilities
= client_capabilities
& server_capabilities
;
3917 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
3918 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
3919 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
3921 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
3923 conn
->smb1
.server
.capabilities
= server_capabilities
;
3924 conn
->smb1
.capabilities
= capabilities
;
3926 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
3927 conn
->smb1
.max_xmit
= max_xmit
;
3929 conn
->smb1
.server
.max_mux
= server_max_mux
;
3931 conn
->smb1
.server
.security_mode
= server_security_mode
;
3933 conn
->smb1
.server
.readbraw
= server_readbraw
;
3934 conn
->smb1
.server
.writebraw
= server_writebraw
;
3935 conn
->smb1
.server
.lockread
= server_lockread
;
3936 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
3938 conn
->smb1
.server
.session_key
= server_session_key
;
3940 talloc_steal(conn
, server_gss_blob
.data
);
3941 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
3942 conn
->smb1
.server
.guid
= server_guid
;
3943 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
3944 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
3945 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
3947 conn
->smb1
.server
.time_zone
= server_time_zone
;
3948 conn
->smb1
.server
.system_time
= server_system_time
;
3950 tevent_req_done(req
);
3953 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
3957 uint16_t dialect_count
= 0;
3959 buf
= state
->smb2
.dyn
;
3960 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
3961 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
3965 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
3969 SSVAL(buf
, dialect_count
*2, smb2cli_prots
[i
].smb2_dialect
);
3973 buf
= state
->smb2
.fixed
;
3975 SSVAL(buf
, 2, dialect_count
);
3976 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
3977 SSVAL(buf
, 6, 0); /* Reserved */
3978 if (state
->max_protocol
>= PROTOCOL_SMB2_22
) {
3979 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
3981 SIVAL(buf
, 8, 0); /* Capabilities */
3983 if (state
->max_protocol
>= PROTOCOL_SMB2_10
) {
3987 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
3989 if (!NT_STATUS_IS_OK(status
)) {
3992 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
3994 memset(buf
+12, 0, 16); /* ClientGuid */
3996 SBVAL(buf
, 28, 0); /* ClientStartTime */
3998 return smb2cli_req_send(state
, state
->ev
,
3999 state
->conn
, SMB2_OP_NEGPROT
,
4001 state
->timeout_msec
,
4002 0xFEFF, 0, NULL
, /* pid, tid, session */
4003 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
4004 state
->smb2
.dyn
, dialect_count
*2);
4007 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
4009 struct tevent_req
*req
=
4010 tevent_req_callback_data(subreq
,
4012 struct smbXcli_negprot_state
*state
=
4013 tevent_req_data(req
,
4014 struct smbXcli_negprot_state
);
4015 struct smbXcli_conn
*conn
= state
->conn
;
4016 size_t security_offset
, security_length
;
4022 uint16_t dialect_revision
;
4023 static const struct smb2cli_req_expected_response expected
[] = {
4025 .status
= NT_STATUS_OK
,
4030 status
= smb2cli_req_recv(subreq
, state
, &iov
,
4031 expected
, ARRAY_SIZE(expected
));
4032 TALLOC_FREE(subreq
);
4033 if (tevent_req_nterror(req
, status
)) {
4037 body
= (uint8_t *)iov
[1].iov_base
;
4039 dialect_revision
= SVAL(body
, 4);
4041 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4042 if (smb2cli_prots
[i
].proto
< state
->min_protocol
) {
4046 if (smb2cli_prots
[i
].proto
> state
->max_protocol
) {
4050 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4054 conn
->protocol
= smb2cli_prots
[i
].proto
;
4058 if (conn
->protocol
== PROTOCOL_NONE
) {
4059 if (state
->min_protocol
>= PROTOCOL_SMB2_02
) {
4060 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4064 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4065 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4069 /* make sure we do not loop forever */
4070 state
->min_protocol
= PROTOCOL_SMB2_02
;
4073 * send a SMB2 negprot, in order to negotiate
4076 subreq
= smbXcli_negprot_smb2_subreq(state
);
4077 if (tevent_req_nomem(subreq
, req
)) {
4080 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4084 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4086 blob
= data_blob_const(body
+ 8, 16);
4087 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4088 if (tevent_req_nterror(req
, status
)) {
4092 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4093 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4094 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4095 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4096 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4097 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4099 security_offset
= SVAL(body
, 56);
4100 security_length
= SVAL(body
, 58);
4102 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4103 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4107 if (security_length
> iov
[2].iov_len
) {
4108 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4112 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4115 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4119 tevent_req_done(req
);
4122 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4123 TALLOC_CTX
*tmp_mem
,
4126 size_t num_pending
= talloc_array_length(conn
->pending
);
4127 struct tevent_req
*subreq
;
4128 struct smbXcli_req_state
*substate
;
4129 struct tevent_req
*req
;
4130 uint32_t protocol_magic
;
4131 size_t inbuf_len
= smb_len_nbt(inbuf
);
4133 if (num_pending
!= 1) {
4134 return NT_STATUS_INTERNAL_ERROR
;
4137 if (inbuf_len
< 4) {
4138 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4141 subreq
= conn
->pending
[0];
4142 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
4143 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
4145 protocol_magic
= IVAL(inbuf
, 4);
4147 switch (protocol_magic
) {
4149 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4150 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4151 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4154 if (substate
->smb2
.recv_iov
== NULL
) {
4156 * For the SMB1 negprot we have move it.
4158 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
4159 substate
->smb1
.recv_iov
= NULL
;
4163 * we got an SMB2 answer, which consumed sequence number 0
4164 * so we need to use 1 as the next one
4167 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4168 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4169 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
4172 DEBUG(10, ("Got non-SMB PDU\n"));
4173 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4176 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
4178 return tevent_req_simple_recv_ntstatus(req
);
4181 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
4182 uint32_t timeout_msec
,
4183 enum protocol_types min_protocol
,
4184 enum protocol_types max_protocol
)
4186 TALLOC_CTX
*frame
= talloc_stackframe();
4187 struct tevent_context
*ev
;
4188 struct tevent_req
*req
;
4189 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
4192 if (smbXcli_conn_has_async_calls(conn
)) {
4194 * Can't use sync call while an async call is in flight
4196 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
4199 ev
= tevent_context_init(frame
);
4203 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
4204 min_protocol
, max_protocol
);
4208 ok
= tevent_req_poll(req
, ev
);
4210 status
= map_nt_error_from_unix_common(errno
);
4213 status
= smbXcli_negprot_recv(req
);
4219 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
4221 if (session
->conn
== NULL
) {
4225 DLIST_REMOVE(session
->conn
->sessions
, session
);
4229 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
4230 struct smbXcli_conn
*conn
)
4232 struct smbXcli_session
*session
;
4234 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4235 if (session
== NULL
) {
4238 talloc_set_destructor(session
, smbXcli_session_destructor
);
4240 DLIST_ADD_END(conn
->sessions
, session
, struct smbXcli_session
*);
4241 session
->conn
= conn
;
4246 uint16_t smb1cli_session_current_id(struct smbXcli_session
*session
)
4248 return session
->smb1
.session_id
;
4251 void smb1cli_session_set_id(struct smbXcli_session
*session
,
4252 uint16_t session_id
)
4254 session
->smb1
.session_id
= session_id
;
4257 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
4259 struct smbXcli_conn
*conn
= session
->conn
;
4260 uint8_t security_mode
= 0;
4263 return security_mode
;
4266 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
4267 if (conn
->mandatory_signing
) {
4268 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
4271 return security_mode
;
4274 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
4276 return session
->smb2
.session_id
;
4279 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
4281 return session
->smb2
.session_flags
;
4284 NTSTATUS
smb2cli_session_application_key(struct smbXcli_session
*session
,
4285 TALLOC_CTX
*mem_ctx
,
4288 *key
= data_blob_null
;
4290 if (session
->smb2
.application_key
.length
== 0) {
4291 return NT_STATUS_NO_USER_SESSION_KEY
;
4294 *key
= data_blob_dup_talloc(mem_ctx
, session
->smb2
.application_key
);
4295 if (key
->data
== NULL
) {
4296 return NT_STATUS_NO_MEMORY
;
4299 return NT_STATUS_OK
;
4302 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
4303 uint64_t session_id
,
4304 uint16_t session_flags
)
4306 session
->smb2
.session_id
= session_id
;
4307 session
->smb2
.session_flags
= session_flags
;
4310 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
4311 const DATA_BLOB _session_key
,
4312 const struct iovec
*recv_iov
)
4314 struct smbXcli_conn
*conn
= session
->conn
;
4315 uint16_t no_sign_flags
;
4316 uint8_t session_key
[16];
4320 return NT_STATUS_INVALID_PARAMETER_MIX
;
4323 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
| SMB2_SESSION_FLAG_IS_NULL
;
4325 if (session
->smb2
.session_flags
& no_sign_flags
) {
4326 session
->smb2
.should_sign
= false;
4327 return NT_STATUS_OK
;
4330 if (session
->smb2
.signing_key
.length
!= 0) {
4331 return NT_STATUS_INVALID_PARAMETER_MIX
;
4334 ZERO_STRUCT(session_key
);
4335 memcpy(session_key
, _session_key
.data
,
4336 MIN(_session_key
.length
, sizeof(session_key
)));
4338 session
->smb2
.signing_key
= data_blob_talloc(session
,
4340 sizeof(session_key
));
4341 if (session
->smb2
.signing_key
.data
== NULL
) {
4342 ZERO_STRUCT(session_key
);
4343 return NT_STATUS_NO_MEMORY
;
4346 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4347 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4348 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4350 smb2_key_derivation(session_key
, sizeof(session_key
),
4351 label
.data
, label
.length
,
4352 context
.data
, context
.length
,
4353 session
->smb2
.signing_key
.data
);
4356 session
->smb2
.encryption_key
= data_blob_dup_talloc(session
,
4357 session
->smb2
.signing_key
);
4358 if (session
->smb2
.encryption_key
.data
== NULL
) {
4359 ZERO_STRUCT(session_key
);
4360 return NT_STATUS_NO_MEMORY
;
4363 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4364 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4365 const DATA_BLOB context
= data_blob_string_const_null("ServerIn ");
4367 smb2_key_derivation(session_key
, sizeof(session_key
),
4368 label
.data
, label
.length
,
4369 context
.data
, context
.length
,
4370 session
->smb2
.encryption_key
.data
);
4373 session
->smb2
.decryption_key
= data_blob_dup_talloc(session
,
4374 session
->smb2
.signing_key
);
4375 if (session
->smb2
.decryption_key
.data
== NULL
) {
4376 ZERO_STRUCT(session_key
);
4377 return NT_STATUS_NO_MEMORY
;
4380 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4381 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCCM");
4382 const DATA_BLOB context
= data_blob_string_const_null("ServerOut");
4384 smb2_key_derivation(session_key
, sizeof(session_key
),
4385 label
.data
, label
.length
,
4386 context
.data
, context
.length
,
4387 session
->smb2
.decryption_key
.data
);
4390 session
->smb2
.application_key
= data_blob_dup_talloc(session
,
4391 session
->smb2
.signing_key
);
4392 if (session
->smb2
.application_key
.data
== NULL
) {
4393 ZERO_STRUCT(session_key
);
4394 return NT_STATUS_NO_MEMORY
;
4397 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4398 const DATA_BLOB label
= data_blob_string_const_null("SMB2APP");
4399 const DATA_BLOB context
= data_blob_string_const_null("SmbRpc");
4401 smb2_key_derivation(session_key
, sizeof(session_key
),
4402 label
.data
, label
.length
,
4403 context
.data
, context
.length
,
4404 session
->smb2
.application_key
.data
);
4406 ZERO_STRUCT(session_key
);
4408 session
->smb2
.channel_signing_key
= data_blob_dup_talloc(session
,
4409 session
->smb2
.signing_key
);
4410 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4411 return NT_STATUS_NO_MEMORY
;
4414 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4415 session
->conn
->protocol
,
4417 if (!NT_STATUS_IS_OK(status
)) {
4421 session
->smb2
.should_sign
= false;
4422 session
->smb2
.should_encrypt
= false;
4424 if (conn
->desire_signing
) {
4425 session
->smb2
.should_sign
= true;
4428 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
4429 session
->smb2
.should_sign
= true;
4432 if (session
->smb2
.session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
4433 session
->smb2
.should_encrypt
= true;
4436 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
4437 session
->smb2
.should_encrypt
= false;
4440 if (!(conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
)) {
4441 session
->smb2
.should_encrypt
= false;
4444 generate_random_buffer((uint8_t *)&session
->smb2
.channel_nonce
,
4445 sizeof(session
->smb2
.channel_nonce
));
4446 session
->smb2
.channel_next
= 1;
4448 return NT_STATUS_OK
;
4451 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
4452 struct smbXcli_session
*session1
,
4453 struct smbXcli_conn
*conn
,
4454 struct smbXcli_session
**_session2
)
4456 struct smbXcli_session
*session2
;
4458 if (session1
->smb2
.signing_key
.length
== 0) {
4459 return NT_STATUS_INVALID_PARAMETER_MIX
;
4462 if (session1
->smb2
.channel_next
== 0) {
4463 return NT_STATUS_INVALID_PARAMETER_MIX
;
4467 return NT_STATUS_INVALID_PARAMETER_MIX
;
4470 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
4471 if (session2
== NULL
) {
4472 return NT_STATUS_NO_MEMORY
;
4474 session2
->smb2
.session_id
= session1
->smb2
.session_id
;
4475 session2
->smb2
.session_flags
= session1
->smb2
.session_flags
;
4477 session2
->smb2
.signing_key
= data_blob_dup_talloc(session2
,
4478 session1
->smb2
.signing_key
);
4479 if (session2
->smb2
.signing_key
.data
== NULL
) {
4480 return NT_STATUS_NO_MEMORY
;
4483 session2
->smb2
.application_key
= data_blob_dup_talloc(session2
,
4484 session1
->smb2
.application_key
);
4485 if (session2
->smb2
.application_key
.data
== NULL
) {
4486 return NT_STATUS_NO_MEMORY
;
4489 session2
->smb2
.should_sign
= session1
->smb2
.should_sign
;
4490 session2
->smb2
.should_encrypt
= session1
->smb2
.should_encrypt
;
4492 session2
->smb2
.channel_nonce
= session1
->smb2
.channel_nonce
;
4493 session2
->smb2
.channel_nonce
+= session1
->smb2
.channel_next
;
4494 session1
->smb2
.channel_next
++;
4496 session2
->smb2
.encryption_key
= data_blob_dup_talloc(session2
,
4497 session1
->smb2
.encryption_key
);
4498 if (session2
->smb2
.encryption_key
.data
== NULL
) {
4499 return NT_STATUS_NO_MEMORY
;
4502 session2
->smb2
.decryption_key
= data_blob_dup_talloc(session2
,
4503 session1
->smb2
.decryption_key
);
4504 if (session2
->smb2
.decryption_key
.data
== NULL
) {
4505 return NT_STATUS_NO_MEMORY
;
4508 talloc_set_destructor(session2
, smbXcli_session_destructor
);
4509 DLIST_ADD_END(conn
->sessions
, session2
, struct smbXcli_session
*);
4510 session2
->conn
= conn
;
4512 *_session2
= session2
;
4513 return NT_STATUS_OK
;
4516 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
4517 const DATA_BLOB _channel_key
,
4518 const struct iovec
*recv_iov
)
4520 struct smbXcli_conn
*conn
= session
->conn
;
4521 uint8_t channel_key
[16];
4525 return NT_STATUS_INVALID_PARAMETER_MIX
;
4528 if (session
->smb2
.channel_signing_key
.length
!= 0) {
4529 return NT_STATUS_INVALID_PARAMETER_MIX
;
4532 ZERO_STRUCT(channel_key
);
4533 memcpy(channel_key
, _channel_key
.data
,
4534 MIN(_channel_key
.length
, sizeof(channel_key
)));
4536 session
->smb2
.channel_signing_key
= data_blob_talloc(session
,
4538 sizeof(channel_key
));
4539 if (session
->smb2
.channel_signing_key
.data
== NULL
) {
4540 ZERO_STRUCT(channel_key
);
4541 return NT_STATUS_NO_MEMORY
;
4544 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
4545 const DATA_BLOB label
= data_blob_string_const_null("SMB2AESCMAC");
4546 const DATA_BLOB context
= data_blob_string_const_null("SmbSign");
4548 smb2_key_derivation(channel_key
, sizeof(channel_key
),
4549 label
.data
, label
.length
,
4550 context
.data
, context
.length
,
4551 session
->smb2
.channel_signing_key
.data
);
4553 ZERO_STRUCT(channel_key
);
4555 status
= smb2_signing_check_pdu(session
->smb2
.channel_signing_key
,
4556 session
->conn
->protocol
,
4558 if (!NT_STATUS_IS_OK(status
)) {
4562 return NT_STATUS_OK
;
4565 struct smbXcli_tcon
*smbXcli_tcon_create(TALLOC_CTX
*mem_ctx
)
4567 struct smbXcli_tcon
*tcon
;
4569 tcon
= talloc_zero(mem_ctx
, struct smbXcli_tcon
);
4577 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4579 return tcon
->smb1
.tcon_id
;
4582 void smb1cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint16_t tcon_id
)
4584 tcon
->smb1
.tcon_id
= tcon_id
;
4587 bool smb1cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4589 uint16_t optional_support
,
4590 uint32_t maximal_access
,
4591 uint32_t guest_maximal_access
,
4592 const char *service
,
4593 const char *fs_type
)
4595 tcon
->smb1
.tcon_id
= tcon_id
;
4596 tcon
->smb1
.optional_support
= optional_support
;
4597 tcon
->smb1
.maximal_access
= maximal_access
;
4598 tcon
->smb1
.guest_maximal_access
= guest_maximal_access
;
4600 TALLOC_FREE(tcon
->smb1
.service
);
4601 tcon
->smb1
.service
= talloc_strdup(tcon
, service
);
4602 if (service
!= NULL
&& tcon
->smb1
.service
== NULL
) {
4606 TALLOC_FREE(tcon
->smb1
.fs_type
);
4607 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, fs_type
);
4608 if (fs_type
!= NULL
&& tcon
->smb1
.fs_type
== NULL
) {
4615 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
4617 return tcon
->smb2
.tcon_id
;
4620 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon
*tcon
)
4622 return tcon
->smb2
.capabilities
;
4625 void smb2cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
4629 uint32_t capabilities
,
4630 uint32_t maximal_access
)
4632 tcon
->smb2
.tcon_id
= tcon_id
;
4633 tcon
->smb2
.type
= type
;
4634 tcon
->smb2
.flags
= flags
;
4635 tcon
->smb2
.capabilities
= capabilities
;
4636 tcon
->smb2
.maximal_access
= maximal_access
;