2 Unix SMB/CIFS implementation.
3 Infrastructure for async SMB client requests
4 Copyright (C) Volker Lendecke 2008
5 Copyright (C) Stefan Metzmacher 2011
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "system/network.h"
23 #include "../lib/async_req/async_sock.h"
24 #include "../lib/util/tevent_ntstatus.h"
25 #include "../lib/util/tevent_unix.h"
26 #include "lib/util/util_net.h"
27 #include "lib/util/dlinklist.h"
28 #include "lib/util/iov_buf.h"
29 #include "../libcli/smb/smb_common.h"
30 #include "../libcli/smb/smb_seal.h"
31 #include "../libcli/smb/smb_signing.h"
32 #include "../libcli/smb/read_smb.h"
33 #include "smbXcli_base.h"
34 #include "librpc/ndr/libndr.h"
35 #include "libcli/smb/smb2_negotiate_context.h"
36 #include "lib/crypto/sha512.h"
37 #include "lib/crypto/aes.h"
38 #include "lib/crypto/aes_ccm_128.h"
39 #include "lib/crypto/aes_gcm_128.h"
43 struct smbXcli_session
;
48 struct sockaddr_storage local_ss
;
49 struct sockaddr_storage remote_ss
;
50 const char *remote_name
;
52 struct tevent_queue
*outgoing
;
53 struct tevent_req
**pending
;
54 struct tevent_req
*read_smb_req
;
55 struct tevent_req
*suicide_req
;
57 enum protocol_types min_protocol
;
58 enum protocol_types max_protocol
;
59 enum protocol_types protocol
;
62 bool mandatory_signing
;
65 * The incoming dispatch function should return:
66 * - NT_STATUS_RETRY, if more incoming PDUs are expected.
67 * - NT_STATUS_OK, if no more processing is desired, e.g.
68 * the dispatch function called
70 * - All other return values disconnect the connection.
72 NTSTATUS (*dispatch_incoming
)(struct smbXcli_conn
*conn
,
78 uint32_t capabilities
;
83 uint32_t capabilities
;
86 uint16_t security_mode
;
95 const char *workgroup
;
101 uint32_t capabilities
;
106 struct smb_signing_state
*signing
;
107 struct smb_trans_enc_state
*trans_enc
;
109 struct tevent_req
*read_braw_req
;
114 uint32_t capabilities
;
115 uint16_t security_mode
;
120 uint32_t capabilities
;
121 uint16_t security_mode
;
123 uint32_t max_trans_size
;
124 uint32_t max_read_size
;
125 uint32_t max_write_size
;
133 uint16_t cur_credits
;
134 uint16_t max_credits
;
136 uint32_t cc_chunk_len
;
137 uint32_t cc_max_chunks
;
141 bool force_channel_sequence
;
143 uint8_t preauth_sha512
[64];
146 struct smbXcli_session
*sessions
;
149 struct smb2cli_session
{
151 uint16_t session_flags
;
152 DATA_BLOB application_key
;
153 DATA_BLOB signing_key
;
156 DATA_BLOB encryption_key
;
157 DATA_BLOB decryption_key
;
158 uint64_t nonce_high_random
;
159 uint64_t nonce_high_max
;
162 uint16_t channel_sequence
;
166 struct smbXcli_session
{
167 struct smbXcli_session
*prev
, *next
;
168 struct smbXcli_conn
*conn
;
173 DATA_BLOB application_key
;
177 struct smb2cli_session
*smb2
;
180 DATA_BLOB signing_key
;
181 uint8_t preauth_sha512
[64];
185 * this should be a short term hack
186 * until the upper layers have implemented
189 bool disconnect_expired
;
192 struct smbXcli_tcon
{
194 uint32_t fs_attributes
;
198 uint16_t optional_support
;
199 uint32_t maximal_access
;
200 uint32_t guest_maximal_access
;
209 uint32_t capabilities
;
210 uint32_t maximal_access
;
216 struct smbXcli_req_state
{
217 struct tevent_context
*ev
;
218 struct smbXcli_conn
*conn
;
219 struct smbXcli_session
*session
; /* maybe NULL */
220 struct smbXcli_tcon
*tcon
; /* maybe NULL */
222 uint8_t length_hdr
[4];
228 struct tevent_req
*write_req
;
230 struct timeval endtime
;
233 /* Space for the header including the wct */
234 uint8_t hdr
[HDR_VWV
];
237 * For normal requests, smb1cli_req_send chooses a mid.
238 * SecondaryV trans requests need to use the mid of the primary
239 * request, so we need a place to store it.
240 * Assume it is set if != 0.
245 uint8_t bytecount_buf
[2];
247 #define MAX_SMB_IOV 10
248 /* length_hdr, hdr, words, byte_count, buffers */
249 struct iovec iov
[1 + 3 + MAX_SMB_IOV
];
254 struct tevent_req
**chained_requests
;
257 NTSTATUS recv_status
;
258 /* always an array of 3 talloc elements */
259 struct iovec
*recv_iov
;
263 const uint8_t *fixed
;
268 uint8_t transform
[SMB2_TF_HDR_SIZE
];
269 uint8_t hdr
[SMB2_HDR_BODY
];
270 uint8_t pad
[7]; /* padding space for compounding */
273 * always an array of 3 talloc elements
274 * (without a SMB2_TRANSFORM header!)
278 struct iovec
*recv_iov
;
281 * the expected max for the response dyn_len
283 uint32_t max_dyn_len
;
285 uint16_t credit_charge
;
289 uint64_t encryption_session_id
;
291 bool signing_skipped
;
294 uint16_t cancel_flags
;
300 static int smbXcli_conn_destructor(struct smbXcli_conn
*conn
)
303 * NT_STATUS_OK, means we do not notify the callers
305 smbXcli_conn_disconnect(conn
, NT_STATUS_OK
);
307 while (conn
->sessions
) {
308 conn
->sessions
->conn
= NULL
;
309 DLIST_REMOVE(conn
->sessions
, conn
->sessions
);
312 if (conn
->smb1
.trans_enc
) {
313 TALLOC_FREE(conn
->smb1
.trans_enc
);
319 struct smbXcli_conn
*smbXcli_conn_create(TALLOC_CTX
*mem_ctx
,
321 const char *remote_name
,
322 enum smb_signing_setting signing_state
,
323 uint32_t smb1_capabilities
,
324 struct GUID
*client_guid
,
325 uint32_t smb2_capabilities
)
327 struct smbXcli_conn
*conn
= NULL
;
329 struct sockaddr
*sa
= NULL
;
333 conn
= talloc_zero(mem_ctx
, struct smbXcli_conn
);
340 conn
->remote_name
= talloc_strdup(conn
, remote_name
);
341 if (conn
->remote_name
== NULL
) {
345 ss
= (void *)&conn
->local_ss
;
346 sa
= (struct sockaddr
*)ss
;
347 sa_length
= sizeof(conn
->local_ss
);
348 ret
= getsockname(fd
, sa
, &sa_length
);
352 ss
= (void *)&conn
->remote_ss
;
353 sa
= (struct sockaddr
*)ss
;
354 sa_length
= sizeof(conn
->remote_ss
);
355 ret
= getpeername(fd
, sa
, &sa_length
);
360 conn
->outgoing
= tevent_queue_create(conn
, "smbXcli_outgoing");
361 if (conn
->outgoing
== NULL
) {
364 conn
->pending
= NULL
;
366 conn
->min_protocol
= PROTOCOL_NONE
;
367 conn
->max_protocol
= PROTOCOL_NONE
;
368 conn
->protocol
= PROTOCOL_NONE
;
370 switch (signing_state
) {
371 case SMB_SIGNING_OFF
:
373 conn
->allow_signing
= false;
374 conn
->desire_signing
= false;
375 conn
->mandatory_signing
= false;
377 case SMB_SIGNING_DEFAULT
:
378 case SMB_SIGNING_IF_REQUIRED
:
379 /* if the server requires it */
380 conn
->allow_signing
= true;
381 conn
->desire_signing
= false;
382 conn
->mandatory_signing
= false;
384 case SMB_SIGNING_DESIRED
:
385 /* if the server desires it */
386 conn
->allow_signing
= true;
387 conn
->desire_signing
= true;
388 conn
->mandatory_signing
= false;
390 case SMB_SIGNING_IPC_DEFAULT
:
391 case SMB_SIGNING_REQUIRED
:
393 conn
->allow_signing
= true;
394 conn
->desire_signing
= true;
395 conn
->mandatory_signing
= true;
399 conn
->smb1
.client
.capabilities
= smb1_capabilities
;
400 conn
->smb1
.client
.max_xmit
= UINT16_MAX
;
402 conn
->smb1
.capabilities
= conn
->smb1
.client
.capabilities
;
403 conn
->smb1
.max_xmit
= 1024;
407 /* initialise signing */
408 conn
->smb1
.signing
= smb_signing_init(conn
,
410 conn
->desire_signing
,
411 conn
->mandatory_signing
);
412 if (!conn
->smb1
.signing
) {
416 conn
->smb2
.client
.security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
417 if (conn
->mandatory_signing
) {
418 conn
->smb2
.client
.security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
421 conn
->smb2
.client
.guid
= *client_guid
;
423 conn
->smb2
.client
.capabilities
= smb2_capabilities
;
425 conn
->smb2
.cur_credits
= 1;
426 conn
->smb2
.max_credits
= 0;
427 conn
->smb2
.io_priority
= 1;
430 * Samba and Windows servers accept a maximum of 16 MiB with a maximum
431 * chunk length of 1 MiB.
433 conn
->smb2
.cc_chunk_len
= 1024 * 1024;
434 conn
->smb2
.cc_max_chunks
= 16;
436 talloc_set_destructor(conn
, smbXcli_conn_destructor
);
444 bool smbXcli_conn_is_connected(struct smbXcli_conn
*conn
)
450 if (conn
->sock_fd
== -1) {
457 enum protocol_types
smbXcli_conn_protocol(struct smbXcli_conn
*conn
)
459 return conn
->protocol
;
462 bool smbXcli_conn_use_unicode(struct smbXcli_conn
*conn
)
464 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
468 if (conn
->smb1
.capabilities
& CAP_UNICODE
) {
475 bool smbXcli_conn_signing_mandatory(struct smbXcli_conn
*conn
)
477 return conn
->mandatory_signing
;
481 * [MS-SMB] 2.2.2.3.5 - SMB1 support for passing through
482 * query/set commands to the file system
484 bool smbXcli_conn_support_passthrough(struct smbXcli_conn
*conn
)
486 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
490 if (conn
->smb1
.capabilities
& CAP_W2K_SMBS
) {
497 void smbXcli_conn_set_sockopt(struct smbXcli_conn
*conn
, const char *options
)
499 set_socket_options(conn
->sock_fd
, options
);
502 const struct sockaddr_storage
*smbXcli_conn_local_sockaddr(struct smbXcli_conn
*conn
)
504 return &conn
->local_ss
;
507 const struct sockaddr_storage
*smbXcli_conn_remote_sockaddr(struct smbXcli_conn
*conn
)
509 return &conn
->remote_ss
;
512 const char *smbXcli_conn_remote_name(struct smbXcli_conn
*conn
)
514 return conn
->remote_name
;
517 uint16_t smbXcli_conn_max_requests(struct smbXcli_conn
*conn
)
519 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
526 return conn
->smb1
.server
.max_mux
;
529 NTTIME
smbXcli_conn_server_system_time(struct smbXcli_conn
*conn
)
531 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
532 return conn
->smb2
.server
.system_time
;
535 return conn
->smb1
.server
.system_time
;
538 const DATA_BLOB
*smbXcli_conn_server_gss_blob(struct smbXcli_conn
*conn
)
540 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
541 return &conn
->smb2
.server
.gss_blob
;
544 return &conn
->smb1
.server
.gss_blob
;
547 const struct GUID
*smbXcli_conn_server_guid(struct smbXcli_conn
*conn
)
549 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
550 return &conn
->smb2
.server
.guid
;
553 return &conn
->smb1
.server
.guid
;
556 bool smbXcli_conn_get_force_channel_sequence(struct smbXcli_conn
*conn
)
558 return conn
->smb2
.force_channel_sequence
;
561 void smbXcli_conn_set_force_channel_sequence(struct smbXcli_conn
*conn
,
564 conn
->smb2
.force_channel_sequence
= v
;
567 struct smbXcli_conn_samba_suicide_state
{
568 struct smbXcli_conn
*conn
;
571 struct tevent_req
*write_req
;
574 static void smbXcli_conn_samba_suicide_cleanup(struct tevent_req
*req
,
575 enum tevent_req_state req_state
);
576 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
);
578 struct tevent_req
*smbXcli_conn_samba_suicide_send(TALLOC_CTX
*mem_ctx
,
579 struct tevent_context
*ev
,
580 struct smbXcli_conn
*conn
,
583 struct tevent_req
*req
, *subreq
;
584 struct smbXcli_conn_samba_suicide_state
*state
;
586 req
= tevent_req_create(mem_ctx
, &state
,
587 struct smbXcli_conn_samba_suicide_state
);
592 SIVAL(state
->buf
, 4, 0x74697865);
593 SCVAL(state
->buf
, 8, exitcode
);
594 _smb_setlen_nbt(state
->buf
, sizeof(state
->buf
)-4);
596 if (conn
->suicide_req
!= NULL
) {
597 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER
);
598 return tevent_req_post(req
, ev
);
601 state
->iov
.iov_base
= state
->buf
;
602 state
->iov
.iov_len
= sizeof(state
->buf
);
604 subreq
= writev_send(state
, ev
, conn
->outgoing
, conn
->sock_fd
,
605 false, &state
->iov
, 1);
606 if (tevent_req_nomem(subreq
, req
)) {
607 return tevent_req_post(req
, ev
);
609 tevent_req_set_callback(subreq
, smbXcli_conn_samba_suicide_done
, req
);
610 state
->write_req
= subreq
;
612 tevent_req_set_cleanup_fn(req
, smbXcli_conn_samba_suicide_cleanup
);
615 * We need to use tevent_req_defer_callback()
616 * in order to allow smbXcli_conn_disconnect()
617 * to do a safe cleanup.
619 tevent_req_defer_callback(req
, ev
);
620 conn
->suicide_req
= req
;
625 static void smbXcli_conn_samba_suicide_cleanup(struct tevent_req
*req
,
626 enum tevent_req_state req_state
)
628 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
629 req
, struct smbXcli_conn_samba_suicide_state
);
631 TALLOC_FREE(state
->write_req
);
633 if (state
->conn
== NULL
) {
637 if (state
->conn
->suicide_req
== req
) {
638 state
->conn
->suicide_req
= NULL
;
643 static void smbXcli_conn_samba_suicide_done(struct tevent_req
*subreq
)
645 struct tevent_req
*req
= tevent_req_callback_data(
646 subreq
, struct tevent_req
);
647 struct smbXcli_conn_samba_suicide_state
*state
= tevent_req_data(
648 req
, struct smbXcli_conn_samba_suicide_state
);
652 state
->write_req
= NULL
;
654 nwritten
= writev_recv(subreq
, &err
);
656 if (nwritten
== -1) {
657 /* here, we need to notify all pending requests */
658 NTSTATUS status
= map_nt_error_from_unix_common(err
);
659 smbXcli_conn_disconnect(state
->conn
, status
);
662 tevent_req_done(req
);
665 NTSTATUS
smbXcli_conn_samba_suicide_recv(struct tevent_req
*req
)
667 return tevent_req_simple_recv_ntstatus(req
);
670 NTSTATUS
smbXcli_conn_samba_suicide(struct smbXcli_conn
*conn
,
673 TALLOC_CTX
*frame
= talloc_stackframe();
674 struct tevent_context
*ev
;
675 struct tevent_req
*req
;
676 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
679 if (smbXcli_conn_has_async_calls(conn
)) {
681 * Can't use sync call while an async call is in flight
683 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
686 ev
= samba_tevent_context_init(frame
);
690 req
= smbXcli_conn_samba_suicide_send(frame
, ev
, conn
, exitcode
);
694 ok
= tevent_req_poll_ntstatus(req
, ev
, &status
);
698 status
= smbXcli_conn_samba_suicide_recv(req
);
704 uint32_t smb1cli_conn_capabilities(struct smbXcli_conn
*conn
)
706 return conn
->smb1
.capabilities
;
709 uint32_t smb1cli_conn_max_xmit(struct smbXcli_conn
*conn
)
711 return conn
->smb1
.max_xmit
;
714 bool smb1cli_conn_req_possible(struct smbXcli_conn
*conn
)
716 size_t pending
= talloc_array_length(conn
->pending
);
717 uint16_t possible
= conn
->smb1
.server
.max_mux
;
719 if (pending
>= possible
) {
726 uint32_t smb1cli_conn_server_session_key(struct smbXcli_conn
*conn
)
728 return conn
->smb1
.server
.session_key
;
731 const uint8_t *smb1cli_conn_server_challenge(struct smbXcli_conn
*conn
)
733 return conn
->smb1
.server
.challenge
;
736 uint16_t smb1cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
738 return conn
->smb1
.server
.security_mode
;
741 bool smb1cli_conn_server_readbraw(struct smbXcli_conn
*conn
)
743 return conn
->smb1
.server
.readbraw
;
746 bool smb1cli_conn_server_writebraw(struct smbXcli_conn
*conn
)
748 return conn
->smb1
.server
.writebraw
;
751 bool smb1cli_conn_server_lockread(struct smbXcli_conn
*conn
)
753 return conn
->smb1
.server
.lockread
;
756 bool smb1cli_conn_server_writeunlock(struct smbXcli_conn
*conn
)
758 return conn
->smb1
.server
.writeunlock
;
761 int smb1cli_conn_server_time_zone(struct smbXcli_conn
*conn
)
763 return conn
->smb1
.server
.time_zone
;
766 bool smb1cli_conn_activate_signing(struct smbXcli_conn
*conn
,
767 const DATA_BLOB user_session_key
,
768 const DATA_BLOB response
)
770 return smb_signing_activate(conn
->smb1
.signing
,
775 bool smb1cli_conn_check_signing(struct smbXcli_conn
*conn
,
776 const uint8_t *buf
, uint32_t seqnum
)
778 const uint8_t *hdr
= buf
+ NBT_HDR_SIZE
;
779 size_t len
= smb_len_nbt(buf
);
781 return smb_signing_check_pdu(conn
->smb1
.signing
, hdr
, len
, seqnum
);
784 bool smb1cli_conn_signing_is_active(struct smbXcli_conn
*conn
)
786 return smb_signing_is_active(conn
->smb1
.signing
);
789 void smb1cli_conn_set_encryption(struct smbXcli_conn
*conn
,
790 struct smb_trans_enc_state
*es
)
792 /* Replace the old state, if any. */
793 if (conn
->smb1
.trans_enc
) {
794 TALLOC_FREE(conn
->smb1
.trans_enc
);
796 conn
->smb1
.trans_enc
= es
;
799 bool smb1cli_conn_encryption_on(struct smbXcli_conn
*conn
)
801 return common_encryption_on(conn
->smb1
.trans_enc
);
805 static NTSTATUS
smb1cli_pull_raw_error(const uint8_t *hdr
)
807 uint32_t flags2
= SVAL(hdr
, HDR_FLG2
);
808 NTSTATUS status
= NT_STATUS(IVAL(hdr
, HDR_RCLS
));
810 if (NT_STATUS_IS_OK(status
)) {
814 if (flags2
& FLAGS2_32_BIT_ERROR_CODES
) {
818 return NT_STATUS_DOS(CVAL(hdr
, HDR_RCLS
), SVAL(hdr
, HDR_ERR
));
822 * Is the SMB command able to hold an AND_X successor
823 * @param[in] cmd The SMB command in question
824 * @retval Can we add a chained request after "cmd"?
826 bool smb1cli_is_andx_req(uint8_t cmd
)
846 static uint16_t smb1cli_alloc_mid(struct smbXcli_conn
*conn
)
848 size_t num_pending
= talloc_array_length(conn
->pending
);
851 if (conn
->protocol
== PROTOCOL_NONE
) {
853 * This is what windows sends on the SMB1 Negprot request
854 * and some vendors reuse the SMB1 MID as SMB2 sequence number.
862 result
= conn
->smb1
.mid
++;
863 if ((result
== 0) || (result
== 0xffff)) {
867 for (i
=0; i
<num_pending
; i
++) {
868 if (result
== smb1cli_req_mid(conn
->pending
[i
])) {
873 if (i
== num_pending
) {
879 static NTSTATUS
smbXcli_req_cancel_write_req(struct tevent_req
*req
)
881 struct smbXcli_req_state
*state
=
883 struct smbXcli_req_state
);
884 struct smbXcli_conn
*conn
= state
->conn
;
885 size_t num_pending
= talloc_array_length(conn
->pending
);
890 if (state
->write_req
== NULL
) {
895 * Check if it's possible to cancel the request.
896 * If the result is true it's not too late.
897 * See writev_cancel().
899 ok
= tevent_req_cancel(state
->write_req
);
901 TALLOC_FREE(state
->write_req
);
903 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
905 * SMB2 has a sane signing state.
910 if (num_pending
> 1) {
912 * We have more pending requests following us. This
913 * means the signing state will be broken for them.
915 * As a solution we could add the requests directly to
916 * our outgoing queue and do the signing in the trigger
917 * function and then use writev_send() without passing a
918 * queue. That way we'll only sign packets we're most
919 * likely send to the wire.
921 return NT_STATUS_REQUEST_OUT_OF_SEQUENCE
;
925 * If we're the only request that's
926 * pending, we're able to recover the signing
929 smb_signing_cancel_reply(conn
->smb1
.signing
,
930 state
->smb1
.one_way_seqnum
);
934 ret
= writev_recv(state
->write_req
, &err
);
935 TALLOC_FREE(state
->write_req
);
937 return map_nt_error_from_unix_common(err
);
943 void smbXcli_req_unset_pending(struct tevent_req
*req
)
945 struct smbXcli_req_state
*state
=
947 struct smbXcli_req_state
);
948 struct smbXcli_conn
*conn
= state
->conn
;
949 size_t num_pending
= talloc_array_length(conn
->pending
);
951 NTSTATUS cancel_status
;
953 cancel_status
= smbXcli_req_cancel_write_req(req
);
955 if (state
->smb1
.mid
!= 0) {
957 * This is a [nt]trans[2] request which waits
958 * for more than one reply.
960 if (!NT_STATUS_IS_OK(cancel_status
)) {
962 * If the write_req cancel didn't work
963 * we can't use the connection anymore.
965 smbXcli_conn_disconnect(conn
, cancel_status
);
971 tevent_req_set_cleanup_fn(req
, NULL
);
973 if (num_pending
== 1) {
975 * The pending read_smb tevent_req is a child of
976 * conn->pending. So if nothing is pending anymore, we need to
977 * delete the socket read fde.
979 /* TODO: smbXcli_conn_cancel_read_req */
980 TALLOC_FREE(conn
->pending
);
981 conn
->read_smb_req
= NULL
;
983 if (!NT_STATUS_IS_OK(cancel_status
)) {
985 * If the write_req cancel didn't work
986 * we can't use the connection anymore.
988 smbXcli_conn_disconnect(conn
, cancel_status
);
994 for (i
=0; i
<num_pending
; i
++) {
995 if (req
== conn
->pending
[i
]) {
999 if (i
== num_pending
) {
1001 * Something's seriously broken. Just returning here is the
1002 * right thing nevertheless, the point of this routine is to
1003 * remove ourselves from conn->pending.
1006 if (!NT_STATUS_IS_OK(cancel_status
)) {
1008 * If the write_req cancel didn't work
1009 * we can't use the connection anymore.
1011 smbXcli_conn_disconnect(conn
, cancel_status
);
1018 * Remove ourselves from the conn->pending array
1020 for (; i
< (num_pending
- 1); i
++) {
1021 conn
->pending
[i
] = conn
->pending
[i
+1];
1025 * No NULL check here, we're shrinking by sizeof(void *), and
1026 * talloc_realloc just adjusts the size for this.
1028 conn
->pending
= talloc_realloc(NULL
, conn
->pending
, struct tevent_req
*,
1031 if (!NT_STATUS_IS_OK(cancel_status
)) {
1033 * If the write_req cancel didn't work
1034 * we can't use the connection anymore.
1036 smbXcli_conn_disconnect(conn
, cancel_status
);
1042 static void smbXcli_req_cleanup(struct tevent_req
*req
,
1043 enum tevent_req_state req_state
)
1045 struct smbXcli_req_state
*state
=
1046 tevent_req_data(req
,
1047 struct smbXcli_req_state
);
1048 struct smbXcli_conn
*conn
= state
->conn
;
1049 NTSTATUS cancel_status
;
1051 switch (req_state
) {
1052 case TEVENT_REQ_RECEIVED
:
1054 * Make sure we really remove it from
1055 * the pending array on destruction.
1057 * smbXcli_req_unset_pending() calls
1058 * smbXcli_req_cancel_write_req() internal
1060 state
->smb1
.mid
= 0;
1061 smbXcli_req_unset_pending(req
);
1064 cancel_status
= smbXcli_req_cancel_write_req(req
);
1065 if (!NT_STATUS_IS_OK(cancel_status
)) {
1067 * If the write_req cancel didn't work
1068 * we can't use the connection anymore.
1070 smbXcli_conn_disconnect(conn
, cancel_status
);
1077 static bool smb1cli_req_cancel(struct tevent_req
*req
);
1078 static bool smb2cli_req_cancel(struct tevent_req
*req
);
1080 static bool smbXcli_req_cancel(struct tevent_req
*req
)
1082 struct smbXcli_req_state
*state
=
1083 tevent_req_data(req
,
1084 struct smbXcli_req_state
);
1086 if (!smbXcli_conn_is_connected(state
->conn
)) {
1090 if (state
->conn
->protocol
== PROTOCOL_NONE
) {
1094 if (state
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
1095 return smb2cli_req_cancel(req
);
1098 return smb1cli_req_cancel(req
);
1101 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
);
1103 bool smbXcli_req_set_pending(struct tevent_req
*req
)
1105 struct smbXcli_req_state
*state
=
1106 tevent_req_data(req
,
1107 struct smbXcli_req_state
);
1108 struct smbXcli_conn
*conn
;
1109 struct tevent_req
**pending
;
1114 if (!smbXcli_conn_is_connected(conn
)) {
1118 num_pending
= talloc_array_length(conn
->pending
);
1120 pending
= talloc_realloc(conn
, conn
->pending
, struct tevent_req
*,
1122 if (pending
== NULL
) {
1125 pending
[num_pending
] = req
;
1126 conn
->pending
= pending
;
1127 tevent_req_set_cleanup_fn(req
, smbXcli_req_cleanup
);
1128 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1130 if (!smbXcli_conn_receive_next(conn
)) {
1132 * the caller should notify the current request
1134 * And all other pending requests get notified
1135 * by smbXcli_conn_disconnect().
1137 smbXcli_req_unset_pending(req
);
1138 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1145 static void smbXcli_conn_received(struct tevent_req
*subreq
);
1147 static bool smbXcli_conn_receive_next(struct smbXcli_conn
*conn
)
1149 size_t num_pending
= talloc_array_length(conn
->pending
);
1150 struct tevent_req
*req
;
1151 struct smbXcli_req_state
*state
;
1153 if (conn
->read_smb_req
!= NULL
) {
1157 if (num_pending
== 0) {
1158 if (conn
->smb2
.mid
< UINT64_MAX
) {
1159 /* no more pending requests, so we are done for now */
1164 * If there are no more SMB2 requests possible,
1165 * because we are out of message ids,
1166 * we need to disconnect.
1168 smbXcli_conn_disconnect(conn
, NT_STATUS_CONNECTION_ABORTED
);
1172 req
= conn
->pending
[0];
1173 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1176 * We're the first ones, add the read_smb request that waits for the
1177 * answer from the server
1179 conn
->read_smb_req
= read_smb_send(conn
->pending
,
1182 if (conn
->read_smb_req
== NULL
) {
1185 tevent_req_set_callback(conn
->read_smb_req
, smbXcli_conn_received
, conn
);
1189 void smbXcli_conn_disconnect(struct smbXcli_conn
*conn
, NTSTATUS status
)
1191 struct smbXcli_session
*session
;
1192 int sock_fd
= conn
->sock_fd
;
1194 tevent_queue_stop(conn
->outgoing
);
1198 session
= conn
->sessions
;
1199 if (talloc_array_length(conn
->pending
) == 0) {
1201 * if we do not have pending requests
1202 * there is no need to update the channel_sequence
1206 for (; session
; session
= session
->next
) {
1207 smb2cli_session_increment_channel_sequence(session
);
1210 if (conn
->suicide_req
!= NULL
) {
1212 * smbXcli_conn_samba_suicide_send()
1213 * used tevent_req_defer_callback() already.
1215 if (!NT_STATUS_IS_OK(status
)) {
1216 tevent_req_nterror(conn
->suicide_req
, status
);
1218 conn
->suicide_req
= NULL
;
1222 * Cancel all pending requests. We do not do a for-loop walking
1223 * conn->pending because that array changes in
1224 * smbXcli_req_unset_pending.
1226 while (talloc_array_length(conn
->pending
) > 0) {
1227 struct tevent_req
*req
;
1228 struct smbXcli_req_state
*state
;
1229 struct tevent_req
**chain
;
1233 req
= conn
->pending
[0];
1234 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1236 if (state
->smb1
.chained_requests
== NULL
) {
1240 * We're dead. No point waiting for trans2
1243 state
->smb1
.mid
= 0;
1245 smbXcli_req_unset_pending(req
);
1247 if (NT_STATUS_IS_OK(status
)) {
1248 /* do not notify the callers */
1252 in_progress
= tevent_req_is_in_progress(req
);
1261 * we need to defer the callback, because we may notify
1262 * more then one caller.
1264 tevent_req_defer_callback(req
, state
->ev
);
1265 tevent_req_nterror(req
, status
);
1269 chain
= talloc_move(conn
, &state
->smb1
.chained_requests
);
1270 num_chained
= talloc_array_length(chain
);
1272 for (i
=0; i
<num_chained
; i
++) {
1276 state
= tevent_req_data(req
, struct smbXcli_req_state
);
1279 * We're dead. No point waiting for trans2
1282 state
->smb1
.mid
= 0;
1284 smbXcli_req_unset_pending(req
);
1286 if (NT_STATUS_IS_OK(status
)) {
1287 /* do not notify the callers */
1291 in_progress
= tevent_req_is_in_progress(req
);
1300 * we need to defer the callback, because we may notify
1301 * more than one caller.
1303 tevent_req_defer_callback(req
, state
->ev
);
1304 tevent_req_nterror(req
, status
);
1309 if (sock_fd
!= -1) {
1315 * Fetch a smb request's mid. Only valid after the request has been sent by
1316 * smb1cli_req_send().
1318 uint16_t smb1cli_req_mid(struct tevent_req
*req
)
1320 struct smbXcli_req_state
*state
=
1321 tevent_req_data(req
,
1322 struct smbXcli_req_state
);
1324 if (state
->smb1
.mid
!= 0) {
1325 return state
->smb1
.mid
;
1328 return SVAL(state
->smb1
.hdr
, HDR_MID
);
1331 void smb1cli_req_set_mid(struct tevent_req
*req
, uint16_t mid
)
1333 struct smbXcli_req_state
*state
=
1334 tevent_req_data(req
,
1335 struct smbXcli_req_state
);
1337 state
->smb1
.mid
= mid
;
1340 uint32_t smb1cli_req_seqnum(struct tevent_req
*req
)
1342 struct smbXcli_req_state
*state
=
1343 tevent_req_data(req
,
1344 struct smbXcli_req_state
);
1346 return state
->smb1
.seqnum
;
1349 void smb1cli_req_set_seqnum(struct tevent_req
*req
, uint32_t seqnum
)
1351 struct smbXcli_req_state
*state
=
1352 tevent_req_data(req
,
1353 struct smbXcli_req_state
);
1355 state
->smb1
.seqnum
= seqnum
;
1358 static size_t smbXcli_iov_len(const struct iovec
*iov
, int count
)
1360 ssize_t ret
= iov_buflen(iov
, count
);
1362 /* Ignore the overflow case for now ... */
1366 static void smb1cli_req_flags(enum protocol_types protocol
,
1367 uint32_t smb1_capabilities
,
1368 uint8_t smb_command
,
1369 uint8_t additional_flags
,
1370 uint8_t clear_flags
,
1372 uint16_t additional_flags2
,
1373 uint16_t clear_flags2
,
1377 uint16_t flags2
= 0;
1379 if (protocol
>= PROTOCOL_LANMAN1
) {
1380 flags
|= FLAG_CASELESS_PATHNAMES
;
1381 flags
|= FLAG_CANONICAL_PATHNAMES
;
1384 if (protocol
>= PROTOCOL_LANMAN2
) {
1385 flags2
|= FLAGS2_LONG_PATH_COMPONENTS
;
1386 flags2
|= FLAGS2_EXTENDED_ATTRIBUTES
;
1389 if (protocol
>= PROTOCOL_NT1
) {
1390 flags2
|= FLAGS2_IS_LONG_NAME
;
1392 if (smb1_capabilities
& CAP_UNICODE
) {
1393 flags2
|= FLAGS2_UNICODE_STRINGS
;
1395 if (smb1_capabilities
& CAP_STATUS32
) {
1396 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
1398 if (smb1_capabilities
& CAP_EXTENDED_SECURITY
) {
1399 flags2
|= FLAGS2_EXTENDED_SECURITY
;
1403 flags
|= additional_flags
;
1404 flags
&= ~clear_flags
;
1405 flags2
|= additional_flags2
;
1406 flags2
&= ~clear_flags2
;
1412 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
);
1414 static bool smb1cli_req_cancel(struct tevent_req
*req
)
1416 struct smbXcli_req_state
*state
=
1417 tevent_req_data(req
,
1418 struct smbXcli_req_state
);
1423 struct tevent_req
*subreq
;
1426 flags
= CVAL(state
->smb1
.hdr
, HDR_FLG
);
1427 flags2
= SVAL(state
->smb1
.hdr
, HDR_FLG2
);
1428 pid
= SVAL(state
->smb1
.hdr
, HDR_PID
);
1429 pid
|= SVAL(state
->smb1
.hdr
, HDR_PIDHIGH
)<<16;
1430 mid
= SVAL(state
->smb1
.hdr
, HDR_MID
);
1432 subreq
= smb1cli_req_create(state
, state
->ev
,
1442 0, NULL
); /* bytes */
1443 if (subreq
== NULL
) {
1446 smb1cli_req_set_mid(subreq
, mid
);
1448 status
= smb1cli_req_chain_submit(&subreq
, 1);
1449 if (!NT_STATUS_IS_OK(status
)) {
1450 TALLOC_FREE(subreq
);
1453 smb1cli_req_set_mid(subreq
, 0);
1455 tevent_req_set_callback(subreq
, smb1cli_req_cancel_done
, NULL
);
1460 static void smb1cli_req_cancel_done(struct tevent_req
*subreq
)
1462 /* we do not care about the result */
1463 TALLOC_FREE(subreq
);
1466 struct tevent_req
*smb1cli_req_create(TALLOC_CTX
*mem_ctx
,
1467 struct tevent_context
*ev
,
1468 struct smbXcli_conn
*conn
,
1469 uint8_t smb_command
,
1470 uint8_t additional_flags
,
1471 uint8_t clear_flags
,
1472 uint16_t additional_flags2
,
1473 uint16_t clear_flags2
,
1474 uint32_t timeout_msec
,
1476 struct smbXcli_tcon
*tcon
,
1477 struct smbXcli_session
*session
,
1478 uint8_t wct
, uint16_t *vwv
,
1480 struct iovec
*bytes_iov
)
1482 struct tevent_req
*req
;
1483 struct smbXcli_req_state
*state
;
1485 uint16_t flags2
= 0;
1490 if (iov_count
> MAX_SMB_IOV
) {
1492 * Should not happen :-)
1497 req
= tevent_req_create(mem_ctx
, &state
,
1498 struct smbXcli_req_state
);
1504 state
->session
= session
;
1508 uid
= session
->smb1
.session_id
;
1512 tid
= tcon
->smb1
.tcon_id
;
1514 if (tcon
->fs_attributes
& FILE_CASE_SENSITIVE_SEARCH
) {
1515 clear_flags
|= FLAG_CASELESS_PATHNAMES
;
1517 /* Default setting, case insensitive. */
1518 additional_flags
|= FLAG_CASELESS_PATHNAMES
;
1521 if (smbXcli_conn_dfs_supported(conn
) &&
1522 smbXcli_tcon_is_dfs_share(tcon
))
1524 additional_flags2
|= FLAGS2_DFS_PATHNAMES
;
1528 state
->smb1
.recv_cmd
= 0xFF;
1529 state
->smb1
.recv_status
= NT_STATUS_INTERNAL_ERROR
;
1530 state
->smb1
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
1531 if (state
->smb1
.recv_iov
== NULL
) {
1536 smb1cli_req_flags(conn
->protocol
,
1537 conn
->smb1
.capabilities
,
1546 SIVAL(state
->smb1
.hdr
, 0, SMB_MAGIC
);
1547 SCVAL(state
->smb1
.hdr
, HDR_COM
, smb_command
);
1548 SIVAL(state
->smb1
.hdr
, HDR_RCLS
, NT_STATUS_V(NT_STATUS_OK
));
1549 SCVAL(state
->smb1
.hdr
, HDR_FLG
, flags
);
1550 SSVAL(state
->smb1
.hdr
, HDR_FLG2
, flags2
);
1551 SSVAL(state
->smb1
.hdr
, HDR_PIDHIGH
, pid
>> 16);
1552 SSVAL(state
->smb1
.hdr
, HDR_TID
, tid
);
1553 SSVAL(state
->smb1
.hdr
, HDR_PID
, pid
);
1554 SSVAL(state
->smb1
.hdr
, HDR_UID
, uid
);
1555 SSVAL(state
->smb1
.hdr
, HDR_MID
, 0); /* this comes later */
1556 SCVAL(state
->smb1
.hdr
, HDR_WCT
, wct
);
1558 state
->smb1
.vwv
= vwv
;
1560 num_bytes
= iov_buflen(bytes_iov
, iov_count
);
1561 if (num_bytes
== -1) {
1563 * I'd love to add a check for num_bytes<=UINT16_MAX here, but
1564 * the smbclient->samba connections can lie and transfer more.
1570 SSVAL(state
->smb1
.bytecount_buf
, 0, num_bytes
);
1572 state
->smb1
.iov
[0].iov_base
= (void *)state
->length_hdr
;
1573 state
->smb1
.iov
[0].iov_len
= sizeof(state
->length_hdr
);
1574 state
->smb1
.iov
[1].iov_base
= (void *)state
->smb1
.hdr
;
1575 state
->smb1
.iov
[1].iov_len
= sizeof(state
->smb1
.hdr
);
1576 state
->smb1
.iov
[2].iov_base
= (void *)state
->smb1
.vwv
;
1577 state
->smb1
.iov
[2].iov_len
= wct
* sizeof(uint16_t);
1578 state
->smb1
.iov
[3].iov_base
= (void *)state
->smb1
.bytecount_buf
;
1579 state
->smb1
.iov
[3].iov_len
= sizeof(uint16_t);
1581 if (iov_count
!= 0) {
1582 memcpy(&state
->smb1
.iov
[4], bytes_iov
,
1583 iov_count
* sizeof(*bytes_iov
));
1585 state
->smb1
.iov_count
= iov_count
+ 4;
1587 if (timeout_msec
> 0) {
1588 struct timeval endtime
;
1590 endtime
= timeval_current_ofs_msec(timeout_msec
);
1591 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
1596 switch (smb_command
) {
1600 state
->one_way
= true;
1603 state
->one_way
= true;
1604 state
->smb1
.one_way_seqnum
= true;
1608 (CVAL(vwv
+3, 0) == LOCKING_ANDX_OPLOCK_RELEASE
)) {
1609 state
->one_way
= true;
1617 static NTSTATUS
smb1cli_conn_signv(struct smbXcli_conn
*conn
,
1618 struct iovec
*iov
, int iov_count
,
1620 bool one_way_seqnum
)
1622 TALLOC_CTX
*frame
= NULL
;
1626 * Obvious optimization: Make cli_calculate_sign_mac work with struct
1627 * iovec directly. MD5Update would do that just fine.
1630 if (iov_count
< 4) {
1631 return NT_STATUS_INVALID_PARAMETER_MIX
;
1633 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1634 return NT_STATUS_INVALID_PARAMETER_MIX
;
1636 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1637 return NT_STATUS_INVALID_PARAMETER_MIX
;
1639 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1640 return NT_STATUS_INVALID_PARAMETER_MIX
;
1642 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1643 return NT_STATUS_INVALID_PARAMETER_MIX
;
1646 frame
= talloc_stackframe();
1648 buf
= iov_concat(frame
, &iov
[1], iov_count
- 1);
1650 return NT_STATUS_NO_MEMORY
;
1653 *seqnum
= smb_signing_next_seqnum(conn
->smb1
.signing
,
1655 smb_signing_sign_pdu(conn
->smb1
.signing
,
1656 buf
, talloc_get_size(buf
),
1658 memcpy(iov
[1].iov_base
, buf
, iov
[1].iov_len
);
1661 return NT_STATUS_OK
;
1664 static void smb1cli_req_writev_done(struct tevent_req
*subreq
);
1665 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
1666 TALLOC_CTX
*tmp_mem
,
1669 static NTSTATUS
smb1cli_req_writev_submit(struct tevent_req
*req
,
1670 struct smbXcli_req_state
*state
,
1671 struct iovec
*iov
, int iov_count
)
1673 struct tevent_req
*subreq
;
1679 if (!smbXcli_conn_is_connected(state
->conn
)) {
1680 return NT_STATUS_CONNECTION_DISCONNECTED
;
1683 if (state
->conn
->protocol
> PROTOCOL_NT1
) {
1684 DBG_ERR("called for dialect[%s] server[%s]\n",
1685 smb_protocol_types_string(state
->conn
->protocol
),
1686 smbXcli_conn_remote_name(state
->conn
));
1687 return NT_STATUS_REVISION_MISMATCH
;
1690 if (iov_count
< 4) {
1691 return NT_STATUS_INVALID_PARAMETER_MIX
;
1693 if (iov
[0].iov_len
!= NBT_HDR_SIZE
) {
1694 return NT_STATUS_INVALID_PARAMETER_MIX
;
1696 if (iov
[1].iov_len
!= (MIN_SMB_SIZE
-sizeof(uint16_t))) {
1697 return NT_STATUS_INVALID_PARAMETER_MIX
;
1699 if (iov
[2].iov_len
> (0xFF * sizeof(uint16_t))) {
1700 return NT_STATUS_INVALID_PARAMETER_MIX
;
1702 if (iov
[3].iov_len
!= sizeof(uint16_t)) {
1703 return NT_STATUS_INVALID_PARAMETER_MIX
;
1706 cmd
= CVAL(iov
[1].iov_base
, HDR_COM
);
1707 if (cmd
== SMBreadBraw
) {
1708 if (smbXcli_conn_has_async_calls(state
->conn
)) {
1709 return NT_STATUS_INVALID_PARAMETER_MIX
;
1711 state
->conn
->smb1
.read_braw_req
= req
;
1714 if (state
->smb1
.mid
!= 0) {
1715 mid
= state
->smb1
.mid
;
1717 mid
= smb1cli_alloc_mid(state
->conn
);
1719 SSVAL(iov
[1].iov_base
, HDR_MID
, mid
);
1721 nbtlen
= iov_buflen(&iov
[1], iov_count
-1);
1722 if ((nbtlen
== -1) || (nbtlen
> 0x1FFFF)) {
1723 return NT_STATUS_INVALID_PARAMETER_MIX
;
1726 _smb_setlen_nbt(iov
[0].iov_base
, nbtlen
);
1728 status
= smb1cli_conn_signv(state
->conn
, iov
, iov_count
,
1729 &state
->smb1
.seqnum
,
1730 state
->smb1
.one_way_seqnum
);
1732 if (!NT_STATUS_IS_OK(status
)) {
1737 * If we supported multiple encrytion contexts
1738 * here we'd look up based on tid.
1740 if (common_encryption_on(state
->conn
->smb1
.trans_enc
)) {
1741 char *buf
, *enc_buf
;
1743 buf
= (char *)iov_concat(talloc_tos(), iov
, iov_count
);
1745 return NT_STATUS_NO_MEMORY
;
1747 status
= common_encrypt_buffer(state
->conn
->smb1
.trans_enc
,
1748 (char *)buf
, &enc_buf
);
1750 if (!NT_STATUS_IS_OK(status
)) {
1751 DEBUG(0, ("Error in encrypting client message: %s\n",
1752 nt_errstr(status
)));
1755 buf
= (char *)talloc_memdup(state
, enc_buf
,
1756 smb_len_nbt(enc_buf
)+4);
1759 return NT_STATUS_NO_MEMORY
;
1761 iov
[0].iov_base
= (void *)buf
;
1762 iov
[0].iov_len
= talloc_get_size(buf
);
1766 if (state
->conn
->dispatch_incoming
== NULL
) {
1767 state
->conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
1770 if (!smbXcli_req_set_pending(req
)) {
1771 return NT_STATUS_NO_MEMORY
;
1774 tevent_req_set_cancel_fn(req
, smbXcli_req_cancel
);
1776 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
1777 state
->conn
->sock_fd
, false, iov
, iov_count
);
1778 if (subreq
== NULL
) {
1779 return NT_STATUS_NO_MEMORY
;
1781 tevent_req_set_callback(subreq
, smb1cli_req_writev_done
, req
);
1782 state
->write_req
= subreq
;
1784 return NT_STATUS_OK
;
1787 struct tevent_req
*smb1cli_req_send(TALLOC_CTX
*mem_ctx
,
1788 struct tevent_context
*ev
,
1789 struct smbXcli_conn
*conn
,
1790 uint8_t smb_command
,
1791 uint8_t additional_flags
,
1792 uint8_t clear_flags
,
1793 uint16_t additional_flags2
,
1794 uint16_t clear_flags2
,
1795 uint32_t timeout_msec
,
1797 struct smbXcli_tcon
*tcon
,
1798 struct smbXcli_session
*session
,
1799 uint8_t wct
, uint16_t *vwv
,
1801 const uint8_t *bytes
)
1803 struct tevent_req
*req
;
1807 iov
.iov_base
= discard_const_p(void, bytes
);
1808 iov
.iov_len
= num_bytes
;
1810 req
= smb1cli_req_create(mem_ctx
, ev
, conn
, smb_command
,
1811 additional_flags
, clear_flags
,
1812 additional_flags2
, clear_flags2
,
1819 if (!tevent_req_is_in_progress(req
)) {
1820 return tevent_req_post(req
, ev
);
1822 status
= smb1cli_req_chain_submit(&req
, 1);
1823 if (tevent_req_nterror(req
, status
)) {
1824 return tevent_req_post(req
, ev
);
1829 static void smb1cli_req_writev_done(struct tevent_req
*subreq
)
1831 struct tevent_req
*req
=
1832 tevent_req_callback_data(subreq
,
1834 struct smbXcli_req_state
*state
=
1835 tevent_req_data(req
,
1836 struct smbXcli_req_state
);
1840 state
->write_req
= NULL
;
1842 nwritten
= writev_recv(subreq
, &err
);
1843 TALLOC_FREE(subreq
);
1844 if (nwritten
== -1) {
1845 /* here, we need to notify all pending requests */
1846 NTSTATUS status
= map_nt_error_from_unix_common(err
);
1847 smbXcli_conn_disconnect(state
->conn
, status
);
1851 if (state
->one_way
) {
1852 state
->inbuf
= NULL
;
1853 tevent_req_done(req
);
1858 static void smbXcli_conn_received(struct tevent_req
*subreq
)
1860 struct smbXcli_conn
*conn
=
1861 tevent_req_callback_data(subreq
,
1862 struct smbXcli_conn
);
1863 TALLOC_CTX
*frame
= talloc_stackframe();
1869 if (subreq
!= conn
->read_smb_req
) {
1870 DEBUG(1, ("Internal error: cli_smb_received called with "
1871 "unexpected subreq\n"));
1872 smbXcli_conn_disconnect(conn
, NT_STATUS_INTERNAL_ERROR
);
1876 conn
->read_smb_req
= NULL
;
1878 received
= read_smb_recv(subreq
, frame
, &inbuf
, &err
);
1879 TALLOC_FREE(subreq
);
1880 if (received
== -1) {
1881 status
= map_nt_error_from_unix_common(err
);
1882 smbXcli_conn_disconnect(conn
, status
);
1887 status
= conn
->dispatch_incoming(conn
, frame
, inbuf
);
1889 if (NT_STATUS_IS_OK(status
)) {
1891 * We should not do any more processing
1892 * as the dispatch function called
1893 * tevent_req_done().
1898 if (!NT_STATUS_EQUAL(status
, NT_STATUS_RETRY
)) {
1900 * We got an error, so notify all pending requests
1902 smbXcli_conn_disconnect(conn
, status
);
1907 * We got NT_STATUS_RETRY, so we may ask for a
1908 * next incoming pdu.
1910 if (!smbXcli_conn_receive_next(conn
)) {
1911 smbXcli_conn_disconnect(conn
, NT_STATUS_NO_MEMORY
);
1915 static NTSTATUS
smb1cli_inbuf_parse_chain(uint8_t *buf
, TALLOC_CTX
*mem_ctx
,
1916 struct iovec
**piov
, int *pnum_iov
)
1927 size_t min_size
= MIN_SMB_SIZE
;
1929 buflen
= smb_len_tcp(buf
);
1932 hdr
= buf
+ NBT_HDR_SIZE
;
1934 status
= smb1cli_pull_raw_error(hdr
);
1935 if (NT_STATUS_IS_ERR(status
)) {
1937 * This is an ugly hack to support OS/2
1938 * which skips the byte_count in the DATA block
1939 * on some error responses.
1943 min_size
-= sizeof(uint16_t);
1946 if (buflen
< min_size
) {
1947 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
1951 * This returns iovec elements in the following order:
1966 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
1968 return NT_STATUS_NO_MEMORY
;
1970 iov
[0].iov_base
= hdr
;
1971 iov
[0].iov_len
= HDR_WCT
;
1974 cmd
= CVAL(hdr
, HDR_COM
);
1978 size_t len
= buflen
- taken
;
1980 struct iovec
*iov_tmp
;
1987 * we need at least WCT
1989 needed
= sizeof(uint8_t);
1991 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
1992 __location__
, (int)len
, (int)needed
));
1997 * Now we check if the specified words are there
1999 wct
= CVAL(hdr
, wct_ofs
);
2000 needed
+= wct
* sizeof(uint16_t);
2002 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
2003 __location__
, (int)len
, (int)needed
));
2007 if ((num_iov
== 1) &&
2009 NT_STATUS_IS_ERR(status
))
2012 * This is an ugly hack to support OS/2
2013 * which skips the byte_count in the DATA block
2014 * on some error responses.
2018 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2020 if (iov_tmp
== NULL
) {
2022 return NT_STATUS_NO_MEMORY
;
2025 cur
= &iov
[num_iov
];
2029 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
2031 cur
[1].iov_base
= cur
[0].iov_base
;
2038 * we need at least BCC
2040 needed
+= sizeof(uint16_t);
2042 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
2043 __location__
, (int)len
, (int)needed
));
2048 * Now we check if the specified bytes are there
2050 bcc_ofs
= wct_ofs
+ sizeof(uint8_t) + wct
* sizeof(uint16_t);
2051 bcc
= SVAL(hdr
, bcc_ofs
);
2052 needed
+= bcc
* sizeof(uint8_t);
2054 DEBUG(10, ("%s: %d bytes left, expected at least %d\n",
2055 __location__
, (int)len
, (int)needed
));
2060 * we allocate 2 iovec structures for words and bytes
2062 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
2064 if (iov_tmp
== NULL
) {
2066 return NT_STATUS_NO_MEMORY
;
2069 cur
= &iov
[num_iov
];
2072 cur
[0].iov_len
= wct
* sizeof(uint16_t);
2073 cur
[0].iov_base
= hdr
+ (wct_ofs
+ sizeof(uint8_t));
2074 cur
[1].iov_len
= bcc
* sizeof(uint8_t);
2075 cur
[1].iov_base
= hdr
+ (bcc_ofs
+ sizeof(uint16_t));
2079 if (!smb1cli_is_andx_req(cmd
)) {
2081 * If the current command does not have AndX chanining
2087 if (wct
== 0 && bcc
== 0) {
2089 * An empty response also ends the chain,
2090 * most likely with an error.
2096 DEBUG(10, ("%s: wct[%d] < 2 for cmd[0x%02X]\n",
2097 __location__
, (int)wct
, (int)cmd
));
2100 cmd
= CVAL(cur
[0].iov_base
, 0);
2103 * If it is the end of the chain we are also done.
2107 wct_ofs
= SVAL(cur
[0].iov_base
, 2);
2109 if (wct_ofs
< taken
) {
2112 if (wct_ofs
> buflen
) {
2117 * we consumed everything up to the start of the next
2123 remaining
= buflen
- taken
;
2125 if (remaining
> 0 && num_iov
>= 3) {
2127 * The last DATA block gets the remaining
2128 * bytes, this is needed to support
2129 * CAP_LARGE_WRITEX and CAP_LARGE_READX.
2131 iov
[num_iov
-1].iov_len
+= remaining
;
2135 *pnum_iov
= num_iov
;
2136 return NT_STATUS_OK
;
2140 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2143 static NTSTATUS
smb1cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
2144 TALLOC_CTX
*tmp_mem
,
2147 struct tevent_req
*req
;
2148 struct smbXcli_req_state
*state
;
2155 uint8_t *inhdr
= inbuf
+ NBT_HDR_SIZE
;
2156 size_t len
= smb_len_tcp(inbuf
);
2157 struct iovec
*iov
= NULL
;
2159 struct tevent_req
**chain
= NULL
;
2160 size_t num_chained
= 0;
2161 size_t num_responses
= 0;
2163 if (conn
->smb1
.read_braw_req
!= NULL
) {
2164 req
= conn
->smb1
.read_braw_req
;
2165 conn
->smb1
.read_braw_req
= NULL
;
2166 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2168 smbXcli_req_unset_pending(req
);
2170 if (state
->smb1
.recv_iov
== NULL
) {
2172 * For requests with more than
2173 * one response, we have to readd the
2176 state
->smb1
.recv_iov
= talloc_zero_array(state
,
2179 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2180 return NT_STATUS_OK
;
2184 state
->smb1
.recv_iov
[0].iov_base
= (void *)(inhdr
);
2185 state
->smb1
.recv_iov
[0].iov_len
= len
;
2186 ZERO_STRUCT(state
->smb1
.recv_iov
[1]);
2187 ZERO_STRUCT(state
->smb1
.recv_iov
[2]);
2189 state
->smb1
.recv_cmd
= SMBreadBraw
;
2190 state
->smb1
.recv_status
= NT_STATUS_OK
;
2191 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
2193 tevent_req_done(req
);
2194 return NT_STATUS_OK
;
2197 if ((IVAL(inhdr
, 0) != SMB_MAGIC
) /* 0xFF"SMB" */
2198 && (SVAL(inhdr
, 0) != 0x45ff)) /* 0xFF"E" */ {
2199 DEBUG(10, ("Got non-SMB PDU\n"));
2200 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2204 * If we supported multiple encrytion contexts
2205 * here we'd look up based on tid.
2207 if (common_encryption_on(conn
->smb1
.trans_enc
)
2208 && (CVAL(inbuf
, 0) == 0)) {
2209 uint16_t enc_ctx_num
;
2211 status
= get_enc_ctx_num(inbuf
, &enc_ctx_num
);
2212 if (!NT_STATUS_IS_OK(status
)) {
2213 DEBUG(10, ("get_enc_ctx_num returned %s\n",
2214 nt_errstr(status
)));
2218 if (enc_ctx_num
!= conn
->smb1
.trans_enc
->enc_ctx_num
) {
2219 DEBUG(10, ("wrong enc_ctx %d, expected %d\n",
2221 conn
->smb1
.trans_enc
->enc_ctx_num
));
2222 return NT_STATUS_INVALID_HANDLE
;
2225 status
= common_decrypt_buffer(conn
->smb1
.trans_enc
,
2227 if (!NT_STATUS_IS_OK(status
)) {
2228 DEBUG(10, ("common_decrypt_buffer returned %s\n",
2229 nt_errstr(status
)));
2232 inhdr
= inbuf
+ NBT_HDR_SIZE
;
2233 len
= smb_len_nbt(inbuf
);
2236 mid
= SVAL(inhdr
, HDR_MID
);
2237 num_pending
= talloc_array_length(conn
->pending
);
2239 for (i
=0; i
<num_pending
; i
++) {
2240 if (mid
== smb1cli_req_mid(conn
->pending
[i
])) {
2244 if (i
== num_pending
) {
2245 /* Dump unexpected reply */
2246 return NT_STATUS_RETRY
;
2249 oplock_break
= false;
2251 if (mid
== 0xffff) {
2253 * Paranoia checks that this is really an oplock break request.
2255 oplock_break
= (len
== 51); /* hdr + 8 words */
2256 oplock_break
&= ((CVAL(inhdr
, HDR_FLG
) & FLAG_REPLY
) == 0);
2257 oplock_break
&= (CVAL(inhdr
, HDR_COM
) == SMBlockingX
);
2258 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(6)) == 0);
2259 oplock_break
&= (SVAL(inhdr
, HDR_VWV
+VWV(7)) == 0);
2261 if (!oplock_break
) {
2262 /* Dump unexpected reply */
2263 return NT_STATUS_RETRY
;
2267 req
= conn
->pending
[i
];
2268 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2270 if (!oplock_break
/* oplock breaks are not signed */
2271 && !smb_signing_check_pdu(conn
->smb1
.signing
,
2272 inhdr
, len
, state
->smb1
.seqnum
+1)) {
2273 DEBUG(10, ("cli_check_sign_mac failed\n"));
2274 return NT_STATUS_ACCESS_DENIED
;
2277 status
= smb1cli_inbuf_parse_chain(inbuf
, tmp_mem
,
2279 if (!NT_STATUS_IS_OK(status
)) {
2280 DEBUG(10,("smb1cli_inbuf_parse_chain - %s\n",
2281 nt_errstr(status
)));
2285 cmd
= CVAL(inhdr
, HDR_COM
);
2286 status
= smb1cli_pull_raw_error(inhdr
);
2288 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
) &&
2289 (state
->session
!= NULL
) && state
->session
->disconnect_expired
)
2292 * this should be a short term hack
2293 * until the upper layers have implemented
2294 * re-authentication.
2299 if (state
->smb1
.chained_requests
== NULL
) {
2301 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2304 smbXcli_req_unset_pending(req
);
2306 if (state
->smb1
.recv_iov
== NULL
) {
2308 * For requests with more than
2309 * one response, we have to readd the
2312 state
->smb1
.recv_iov
= talloc_zero_array(state
,
2315 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2316 return NT_STATUS_OK
;
2320 state
->smb1
.recv_cmd
= cmd
;
2321 state
->smb1
.recv_status
= status
;
2322 state
->inbuf
= talloc_move(state
->smb1
.recv_iov
, &inbuf
);
2324 state
->smb1
.recv_iov
[0] = iov
[0];
2325 state
->smb1
.recv_iov
[1] = iov
[1];
2326 state
->smb1
.recv_iov
[2] = iov
[2];
2328 if (talloc_array_length(conn
->pending
) == 0) {
2329 tevent_req_done(req
);
2330 return NT_STATUS_OK
;
2333 tevent_req_defer_callback(req
, state
->ev
);
2334 tevent_req_done(req
);
2335 return NT_STATUS_RETRY
;
2338 chain
= talloc_move(tmp_mem
, &state
->smb1
.chained_requests
);
2339 num_chained
= talloc_array_length(chain
);
2340 num_responses
= (num_iov
- 1)/2;
2342 if (num_responses
> num_chained
) {
2343 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2346 for (i
=0; i
<num_chained
; i
++) {
2347 size_t iov_idx
= 1 + (i
*2);
2348 struct iovec
*cur
= &iov
[iov_idx
];
2352 state
= tevent_req_data(req
, struct smbXcli_req_state
);
2354 smbXcli_req_unset_pending(req
);
2357 * as we finish multiple requests here
2358 * we need to defer the callbacks as
2359 * they could destroy our current stack state.
2361 tevent_req_defer_callback(req
, state
->ev
);
2363 if (i
>= num_responses
) {
2364 tevent_req_nterror(req
, NT_STATUS_REQUEST_ABORTED
);
2368 if (state
->smb1
.recv_iov
== NULL
) {
2370 * For requests with more than
2371 * one response, we have to readd the
2374 state
->smb1
.recv_iov
= talloc_zero_array(state
,
2377 if (tevent_req_nomem(state
->smb1
.recv_iov
, req
)) {
2382 state
->smb1
.recv_cmd
= cmd
;
2384 if (i
== (num_responses
- 1)) {
2386 * The last request in the chain gets the status
2388 state
->smb1
.recv_status
= status
;
2390 cmd
= CVAL(cur
[0].iov_base
, 0);
2391 state
->smb1
.recv_status
= NT_STATUS_OK
;
2394 state
->inbuf
= inbuf
;
2397 * Note: here we use talloc_reference() in a way
2398 * that does not expose it to the caller.
2400 inbuf_ref
= talloc_reference(state
->smb1
.recv_iov
, inbuf
);
2401 if (tevent_req_nomem(inbuf_ref
, req
)) {
2405 /* copy the related buffers */
2406 state
->smb1
.recv_iov
[0] = iov
[0];
2407 state
->smb1
.recv_iov
[1] = cur
[0];
2408 state
->smb1
.recv_iov
[2] = cur
[1];
2410 tevent_req_done(req
);
2413 return NT_STATUS_RETRY
;
2416 NTSTATUS
smb1cli_req_recv(struct tevent_req
*req
,
2417 TALLOC_CTX
*mem_ctx
,
2418 struct iovec
**piov
,
2422 uint32_t *pvwv_offset
,
2423 uint32_t *pnum_bytes
,
2425 uint32_t *pbytes_offset
,
2427 const struct smb1cli_req_expected_response
*expected
,
2428 size_t num_expected
)
2430 struct smbXcli_req_state
*state
=
2431 tevent_req_data(req
,
2432 struct smbXcli_req_state
);
2433 NTSTATUS status
= NT_STATUS_OK
;
2434 struct iovec
*recv_iov
= NULL
;
2435 uint8_t *hdr
= NULL
;
2437 uint32_t vwv_offset
= 0;
2438 uint16_t *vwv
= NULL
;
2439 uint32_t num_bytes
= 0;
2440 uint32_t bytes_offset
= 0;
2441 uint8_t *bytes
= NULL
;
2443 bool found_status
= false;
2444 bool found_size
= false;
2458 if (pvwv_offset
!= NULL
) {
2461 if (pnum_bytes
!= NULL
) {
2464 if (pbytes
!= NULL
) {
2467 if (pbytes_offset
!= NULL
) {
2470 if (pinbuf
!= NULL
) {
2474 if (state
->inbuf
!= NULL
) {
2475 recv_iov
= state
->smb1
.recv_iov
;
2476 state
->smb1
.recv_iov
= NULL
;
2477 if (state
->smb1
.recv_cmd
!= SMBreadBraw
) {
2478 hdr
= (uint8_t *)recv_iov
[0].iov_base
;
2479 wct
= recv_iov
[1].iov_len
/2;
2480 vwv
= (uint16_t *)recv_iov
[1].iov_base
;
2481 vwv_offset
= PTR_DIFF(vwv
, hdr
);
2482 num_bytes
= recv_iov
[2].iov_len
;
2483 bytes
= (uint8_t *)recv_iov
[2].iov_base
;
2484 bytes_offset
= PTR_DIFF(bytes
, hdr
);
2488 if (tevent_req_is_nterror(req
, &status
)) {
2489 for (i
=0; i
< num_expected
; i
++) {
2490 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2491 found_status
= true;
2497 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
2503 if (num_expected
== 0) {
2504 found_status
= true;
2508 status
= state
->smb1
.recv_status
;
2510 for (i
=0; i
< num_expected
; i
++) {
2511 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
2515 found_status
= true;
2516 if (expected
[i
].wct
== 0) {
2521 if (expected
[i
].wct
== wct
) {
2527 if (!found_status
) {
2532 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
2536 *piov
= talloc_move(mem_ctx
, &recv_iov
);
2548 if (pvwv_offset
!= NULL
) {
2549 *pvwv_offset
= vwv_offset
;
2551 if (pnum_bytes
!= NULL
) {
2552 *pnum_bytes
= num_bytes
;
2554 if (pbytes
!= NULL
) {
2557 if (pbytes_offset
!= NULL
) {
2558 *pbytes_offset
= bytes_offset
;
2560 if (pinbuf
!= NULL
) {
2561 *pinbuf
= state
->inbuf
;
2567 size_t smb1cli_req_wct_ofs(struct tevent_req
**reqs
, int num_reqs
)
2574 for (i
=0; i
<num_reqs
; i
++) {
2575 struct smbXcli_req_state
*state
;
2576 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2577 wct_ofs
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2578 state
->smb1
.iov_count
-2);
2579 wct_ofs
= (wct_ofs
+ 3) & ~3;
2584 NTSTATUS
smb1cli_req_chain_submit(struct tevent_req
**reqs
, int num_reqs
)
2586 struct smbXcli_req_state
*first_state
=
2587 tevent_req_data(reqs
[0],
2588 struct smbXcli_req_state
);
2589 struct smbXcli_req_state
*state
;
2591 size_t chain_padding
= 0;
2593 struct iovec
*iov
= NULL
;
2594 struct iovec
*this_iov
;
2598 if (num_reqs
== 1) {
2599 return smb1cli_req_writev_submit(reqs
[0], first_state
,
2600 first_state
->smb1
.iov
,
2601 first_state
->smb1
.iov_count
);
2605 for (i
=0; i
<num_reqs
; i
++) {
2606 if (!tevent_req_is_in_progress(reqs
[i
])) {
2607 return NT_STATUS_INTERNAL_ERROR
;
2610 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2612 if (state
->smb1
.iov_count
< 4) {
2613 return NT_STATUS_INVALID_PARAMETER_MIX
;
2618 * The NBT and SMB header
2631 iovlen
+= state
->smb1
.iov_count
- 2;
2634 iov
= talloc_zero_array(first_state
, struct iovec
, iovlen
);
2636 return NT_STATUS_NO_MEMORY
;
2639 first_state
->smb1
.chained_requests
= (struct tevent_req
**)talloc_memdup(
2640 first_state
, reqs
, sizeof(*reqs
) * num_reqs
);
2641 if (first_state
->smb1
.chained_requests
== NULL
) {
2643 return NT_STATUS_NO_MEMORY
;
2646 wct_offset
= HDR_WCT
;
2649 for (i
=0; i
<num_reqs
; i
++) {
2650 size_t next_padding
= 0;
2653 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
2655 if (i
< num_reqs
-1) {
2656 if (!smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))
2657 || CVAL(state
->smb1
.hdr
, HDR_WCT
) < 2) {
2659 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2660 return NT_STATUS_INVALID_PARAMETER_MIX
;
2664 wct_offset
+= smbXcli_iov_len(state
->smb1
.iov
+2,
2665 state
->smb1
.iov_count
-2) + 1;
2666 if ((wct_offset
% 4) != 0) {
2667 next_padding
= 4 - (wct_offset
% 4);
2669 wct_offset
+= next_padding
;
2670 vwv
= state
->smb1
.vwv
;
2672 if (i
< num_reqs
-1) {
2673 struct smbXcli_req_state
*next_state
=
2674 tevent_req_data(reqs
[i
+1],
2675 struct smbXcli_req_state
);
2676 SCVAL(vwv
+0, 0, CVAL(next_state
->smb1
.hdr
, HDR_COM
));
2678 SSVAL(vwv
+1, 0, wct_offset
);
2679 } else if (smb1cli_is_andx_req(CVAL(state
->smb1
.hdr
, HDR_COM
))) {
2680 /* properly end the chain */
2681 SCVAL(vwv
+0, 0, 0xff);
2682 SCVAL(vwv
+0, 1, 0xff);
2688 * The NBT and SMB header
2690 this_iov
[0] = state
->smb1
.iov
[0];
2691 this_iov
[1] = state
->smb1
.iov
[1];
2695 * This one is a bit subtle. We have to add
2696 * chain_padding bytes between the requests, and we
2697 * have to also include the wct field of the
2698 * subsequent requests. We use the subsequent header
2699 * for the padding, it contains the wct field in its
2702 this_iov
[0].iov_len
= chain_padding
+1;
2703 this_iov
[0].iov_base
= (void *)&state
->smb1
.hdr
[
2704 sizeof(state
->smb1
.hdr
) - this_iov
[0].iov_len
];
2705 memset(this_iov
[0].iov_base
, 0, this_iov
[0].iov_len
-1);
2710 * copy the words and bytes
2712 memcpy(this_iov
, state
->smb1
.iov
+2,
2713 sizeof(struct iovec
) * (state
->smb1
.iov_count
-2));
2714 this_iov
+= state
->smb1
.iov_count
- 2;
2715 chain_padding
= next_padding
;
2718 nbt_len
= iov_buflen(&iov
[1], iovlen
-1);
2719 if ((nbt_len
== -1) || (nbt_len
> first_state
->conn
->smb1
.max_xmit
)) {
2721 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2722 return NT_STATUS_INVALID_PARAMETER_MIX
;
2725 status
= smb1cli_req_writev_submit(reqs
[0], first_state
, iov
, iovlen
);
2726 if (!NT_STATUS_IS_OK(status
)) {
2728 TALLOC_FREE(first_state
->smb1
.chained_requests
);
2732 return NT_STATUS_OK
;
2735 bool smbXcli_conn_has_async_calls(struct smbXcli_conn
*conn
)
2737 return ((tevent_queue_length(conn
->outgoing
) != 0)
2738 || (talloc_array_length(conn
->pending
) != 0));
2741 bool smbXcli_conn_dfs_supported(struct smbXcli_conn
*conn
)
2743 if (conn
->protocol
>= PROTOCOL_SMB2_02
) {
2744 return (smb2cli_conn_server_capabilities(conn
) & SMB2_CAP_DFS
);
2747 return (smb1cli_conn_capabilities(conn
) & CAP_DFS
);
2750 bool smb2cli_conn_req_possible(struct smbXcli_conn
*conn
, uint32_t *max_dyn_len
)
2752 uint16_t credits
= 1;
2754 if (conn
->smb2
.cur_credits
== 0) {
2755 if (max_dyn_len
!= NULL
) {
2761 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
2762 credits
= conn
->smb2
.cur_credits
;
2765 if (max_dyn_len
!= NULL
) {
2766 *max_dyn_len
= credits
* 65536;
2772 uint32_t smb2cli_conn_server_capabilities(struct smbXcli_conn
*conn
)
2774 return conn
->smb2
.server
.capabilities
;
2777 uint16_t smb2cli_conn_server_security_mode(struct smbXcli_conn
*conn
)
2779 return conn
->smb2
.server
.security_mode
;
2782 uint32_t smb2cli_conn_max_trans_size(struct smbXcli_conn
*conn
)
2784 return conn
->smb2
.server
.max_trans_size
;
2787 uint32_t smb2cli_conn_max_read_size(struct smbXcli_conn
*conn
)
2789 return conn
->smb2
.server
.max_read_size
;
2792 uint32_t smb2cli_conn_max_write_size(struct smbXcli_conn
*conn
)
2794 return conn
->smb2
.server
.max_write_size
;
2797 void smb2cli_conn_set_max_credits(struct smbXcli_conn
*conn
,
2798 uint16_t max_credits
)
2800 conn
->smb2
.max_credits
= max_credits
;
2803 uint16_t smb2cli_conn_get_cur_credits(struct smbXcli_conn
*conn
)
2805 return conn
->smb2
.cur_credits
;
2808 uint8_t smb2cli_conn_get_io_priority(struct smbXcli_conn
*conn
)
2810 if (conn
->protocol
< PROTOCOL_SMB3_11
) {
2814 return conn
->smb2
.io_priority
;
2817 void smb2cli_conn_set_io_priority(struct smbXcli_conn
*conn
,
2818 uint8_t io_priority
)
2820 conn
->smb2
.io_priority
= io_priority
;
2823 uint32_t smb2cli_conn_cc_chunk_len(struct smbXcli_conn
*conn
)
2825 return conn
->smb2
.cc_chunk_len
;
2828 void smb2cli_conn_set_cc_chunk_len(struct smbXcli_conn
*conn
,
2831 conn
->smb2
.cc_chunk_len
= chunk_len
;
2834 uint32_t smb2cli_conn_cc_max_chunks(struct smbXcli_conn
*conn
)
2836 return conn
->smb2
.cc_max_chunks
;
2839 void smb2cli_conn_set_cc_max_chunks(struct smbXcli_conn
*conn
,
2840 uint32_t max_chunks
)
2842 conn
->smb2
.cc_max_chunks
= max_chunks
;
2845 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
);
2847 static bool smb2cli_req_cancel(struct tevent_req
*req
)
2849 struct smbXcli_req_state
*state
=
2850 tevent_req_data(req
,
2851 struct smbXcli_req_state
);
2852 struct smbXcli_tcon
*tcon
= state
->tcon
;
2853 struct smbXcli_session
*session
= state
->session
;
2854 uint8_t *fixed
= state
->smb2
.pad
;
2855 uint16_t fixed_len
= 4;
2856 struct tevent_req
*subreq
;
2857 struct smbXcli_req_state
*substate
;
2860 SSVAL(fixed
, 0, 0x04);
2863 subreq
= smb2cli_req_create(state
, state
->ev
,
2871 if (subreq
== NULL
) {
2874 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
2876 SIVAL(substate
->smb2
.hdr
, SMB2_HDR_FLAGS
, state
->smb2
.cancel_flags
);
2877 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, state
->smb2
.cancel_mid
);
2878 SBVAL(substate
->smb2
.hdr
, SMB2_HDR_ASYNC_ID
, state
->smb2
.cancel_aid
);
2880 status
= smb2cli_req_compound_submit(&subreq
, 1);
2881 if (!NT_STATUS_IS_OK(status
)) {
2882 TALLOC_FREE(subreq
);
2886 tevent_req_set_callback(subreq
, smb2cli_req_cancel_done
, NULL
);
2891 static void smb2cli_req_cancel_done(struct tevent_req
*subreq
)
2893 /* we do not care about the result */
2894 TALLOC_FREE(subreq
);
2897 struct timeval
smbXcli_req_endtime(struct tevent_req
*req
)
2899 struct smbXcli_req_state
*state
= tevent_req_data(
2900 req
, struct smbXcli_req_state
);
2902 return state
->endtime
;
2905 struct tevent_req
*smb2cli_req_create(TALLOC_CTX
*mem_ctx
,
2906 struct tevent_context
*ev
,
2907 struct smbXcli_conn
*conn
,
2909 uint32_t additional_flags
,
2910 uint32_t clear_flags
,
2911 uint32_t timeout_msec
,
2912 struct smbXcli_tcon
*tcon
,
2913 struct smbXcli_session
*session
,
2914 const uint8_t *fixed
,
2918 uint32_t max_dyn_len
)
2920 struct tevent_req
*req
;
2921 struct smbXcli_req_state
*state
;
2925 bool use_channel_sequence
= conn
->smb2
.force_channel_sequence
;
2926 uint16_t channel_sequence
= 0;
2927 bool use_replay_flag
= false;
2929 req
= tevent_req_create(mem_ctx
, &state
,
2930 struct smbXcli_req_state
);
2937 state
->session
= session
;
2940 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_PERSISTENT_HANDLES
) {
2941 use_channel_sequence
= true;
2942 } else if (conn
->smb2
.server
.capabilities
& SMB2_CAP_MULTI_CHANNEL
) {
2943 use_channel_sequence
= true;
2946 if (smbXcli_conn_protocol(conn
) >= PROTOCOL_SMB3_00
) {
2947 use_replay_flag
= true;
2950 if (smbXcli_conn_protocol(conn
) >= PROTOCOL_SMB3_11
) {
2951 flags
|= SMB2_PRIORITY_VALUE_TO_MASK(conn
->smb2
.io_priority
);
2955 uid
= session
->smb2
->session_id
;
2957 if (use_channel_sequence
) {
2958 channel_sequence
= session
->smb2
->channel_sequence
;
2961 if (use_replay_flag
&& session
->smb2
->replay_active
) {
2962 additional_flags
|= SMB2_HDR_FLAG_REPLAY_OPERATION
;
2965 state
->smb2
.should_sign
= session
->smb2
->should_sign
;
2966 state
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
2968 if (cmd
== SMB2_OP_SESSSETUP
&&
2969 session
->smb2_channel
.signing_key
.length
== 0 &&
2970 session
->smb2
->signing_key
.length
!= 0)
2973 * a session bind needs to be signed
2975 state
->smb2
.should_sign
= true;
2978 if (cmd
== SMB2_OP_SESSSETUP
&&
2979 session
->smb2_channel
.signing_key
.length
== 0) {
2980 state
->smb2
.should_encrypt
= false;
2983 if (additional_flags
& SMB2_HDR_FLAG_SIGNED
) {
2984 if (session
->smb2_channel
.signing_key
.length
== 0) {
2985 tevent_req_nterror(req
, NT_STATUS_NO_USER_SESSION_KEY
);
2989 additional_flags
&= ~SMB2_HDR_FLAG_SIGNED
;
2990 state
->smb2
.should_sign
= true;
2995 tid
= tcon
->smb2
.tcon_id
;
2997 if (tcon
->smb2
.should_sign
) {
2998 state
->smb2
.should_sign
= true;
3000 if (tcon
->smb2
.should_encrypt
) {
3001 state
->smb2
.should_encrypt
= true;
3005 if (state
->smb2
.should_encrypt
) {
3006 state
->smb2
.should_sign
= false;
3009 state
->smb2
.recv_iov
= talloc_zero_array(state
, struct iovec
, 3);
3010 if (state
->smb2
.recv_iov
== NULL
) {
3015 flags
|= additional_flags
;
3016 flags
&= ~clear_flags
;
3018 state
->smb2
.fixed
= fixed
;
3019 state
->smb2
.fixed_len
= fixed_len
;
3020 state
->smb2
.dyn
= dyn
;
3021 state
->smb2
.dyn_len
= dyn_len
;
3022 state
->smb2
.max_dyn_len
= max_dyn_len
;
3024 if (state
->smb2
.should_encrypt
) {
3025 SIVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
3026 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
, uid
);
3029 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PROTOCOL_ID
, SMB2_MAGIC
);
3030 SSVAL(state
->smb2
.hdr
, SMB2_HDR_LENGTH
, SMB2_HDR_BODY
);
3031 SSVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
, cmd
);
3032 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CHANNEL_SEQUENCE
, channel_sequence
);
3033 SIVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
, flags
);
3034 SIVAL(state
->smb2
.hdr
, SMB2_HDR_PID
, 0); /* reserved */
3035 SIVAL(state
->smb2
.hdr
, SMB2_HDR_TID
, tid
);
3036 SBVAL(state
->smb2
.hdr
, SMB2_HDR_SESSION_ID
, uid
);
3039 case SMB2_OP_CANCEL
:
3040 state
->one_way
= true;
3044 * If this is a dummy request, it will have
3045 * UINT64_MAX as message id.
3046 * If we send on break acknowledgement,
3047 * this gets overwritten later.
3049 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, UINT64_MAX
);
3053 if (timeout_msec
> 0) {
3054 struct timeval endtime
;
3056 endtime
= timeval_current_ofs_msec(timeout_msec
);
3057 if (!tevent_req_set_endtime(req
, ev
, endtime
)) {
3065 void smb2cli_req_set_notify_async(struct tevent_req
*req
)
3067 struct smbXcli_req_state
*state
=
3068 tevent_req_data(req
,
3069 struct smbXcli_req_state
);
3071 state
->smb2
.notify_async
= true;
3074 static void smb2cli_req_writev_done(struct tevent_req
*subreq
);
3075 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3076 TALLOC_CTX
*tmp_mem
,
3079 NTSTATUS
smb2cli_req_compound_submit(struct tevent_req
**reqs
,
3082 struct smbXcli_req_state
*state
;
3083 struct tevent_req
*subreq
;
3085 int i
, num_iov
, nbt_len
;
3087 const DATA_BLOB
*encryption_key
= NULL
;
3088 uint64_t encryption_session_id
= 0;
3089 uint64_t nonce_high
= UINT64_MAX
;
3090 uint64_t nonce_low
= UINT64_MAX
;
3093 * 1 for the nbt length, optional TRANSFORM
3094 * per request: HDR, fixed, dyn, padding
3095 * -1 because the last one does not need padding
3098 iov
= talloc_array(reqs
[0], struct iovec
, 1 + 1 + 4*num_reqs
- 1);
3100 return NT_STATUS_NO_MEMORY
;
3107 * the session of the first request that requires encryption
3108 * specifies the encryption key.
3110 for (i
=0; i
<num_reqs
; i
++) {
3111 if (!tevent_req_is_in_progress(reqs
[i
])) {
3112 return NT_STATUS_INTERNAL_ERROR
;
3115 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
3117 if (!smbXcli_conn_is_connected(state
->conn
)) {
3118 return NT_STATUS_CONNECTION_DISCONNECTED
;
3121 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
3122 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
3123 return NT_STATUS_REVISION_MISMATCH
;
3126 if (state
->session
== NULL
) {
3130 if (!state
->smb2
.should_encrypt
) {
3134 encryption_key
= &state
->session
->smb2
->encryption_key
;
3135 if (encryption_key
->length
== 0) {
3136 return NT_STATUS_INVALID_PARAMETER_MIX
;
3139 encryption_session_id
= state
->session
->smb2
->session_id
;
3141 state
->session
->smb2
->nonce_low
+= 1;
3142 if (state
->session
->smb2
->nonce_low
== 0) {
3143 state
->session
->smb2
->nonce_high
+= 1;
3144 state
->session
->smb2
->nonce_low
+= 1;
3148 * CCM and GCM algorithms must never have their
3149 * nonce wrap, or the security of the whole
3150 * communication and the keys is destroyed.
3151 * We must drop the connection once we have
3152 * transfered too much data.
3154 * NOTE: We assume nonces greater than 8 bytes.
3156 if (state
->session
->smb2
->nonce_high
>=
3157 state
->session
->smb2
->nonce_high_max
)
3159 return NT_STATUS_ENCRYPTION_FAILED
;
3162 nonce_high
= state
->session
->smb2
->nonce_high_random
;
3163 nonce_high
+= state
->session
->smb2
->nonce_high
;
3164 nonce_low
= state
->session
->smb2
->nonce_low
;
3167 iov
[num_iov
].iov_base
= state
->smb2
.transform
;
3168 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.transform
);
3171 SBVAL(state
->smb2
.transform
, SMB2_TF_PROTOCOL_ID
, SMB2_TF_MAGIC
);
3172 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
,
3174 SBVAL(state
->smb2
.transform
, SMB2_TF_NONCE
+8,
3176 SBVAL(state
->smb2
.transform
, SMB2_TF_SESSION_ID
,
3177 encryption_session_id
);
3179 nbt_len
+= SMB2_TF_HDR_SIZE
;
3183 for (i
=0; i
<num_reqs
; i
++) {
3192 const DATA_BLOB
*signing_key
= NULL
;
3194 if (!tevent_req_is_in_progress(reqs
[i
])) {
3195 return NT_STATUS_INTERNAL_ERROR
;
3198 state
= tevent_req_data(reqs
[i
], struct smbXcli_req_state
);
3200 if (!smbXcli_conn_is_connected(state
->conn
)) {
3201 return NT_STATUS_CONNECTION_DISCONNECTED
;
3204 if ((state
->conn
->protocol
!= PROTOCOL_NONE
) &&
3205 (state
->conn
->protocol
< PROTOCOL_SMB2_02
)) {
3206 return NT_STATUS_REVISION_MISMATCH
;
3209 opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3210 if (opcode
== SMB2_OP_CANCEL
) {
3214 avail
= UINT64_MAX
- state
->conn
->smb2
.mid
;
3216 return NT_STATUS_CONNECTION_ABORTED
;
3219 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
3220 uint32_t max_dyn_len
= 1;
3222 max_dyn_len
= MAX(max_dyn_len
, state
->smb2
.dyn_len
);
3223 max_dyn_len
= MAX(max_dyn_len
, state
->smb2
.max_dyn_len
);
3225 charge
= (max_dyn_len
- 1)/ 65536 + 1;
3230 charge
= MAX(state
->smb2
.credit_charge
, charge
);
3232 avail
= MIN(avail
, state
->conn
->smb2
.cur_credits
);
3233 if (avail
< charge
) {
3234 return NT_STATUS_INTERNAL_ERROR
;
3238 if (state
->conn
->smb2
.max_credits
> state
->conn
->smb2
.cur_credits
) {
3239 credits
= state
->conn
->smb2
.max_credits
-
3240 state
->conn
->smb2
.cur_credits
;
3242 if (state
->conn
->smb2
.max_credits
>= state
->conn
->smb2
.cur_credits
) {
3246 mid
= state
->conn
->smb2
.mid
;
3247 state
->conn
->smb2
.mid
+= charge
;
3248 state
->conn
->smb2
.cur_credits
-= charge
;
3250 if (state
->conn
->smb2
.server
.capabilities
& SMB2_CAP_LARGE_MTU
) {
3251 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT_CHARGE
, charge
);
3253 SSVAL(state
->smb2
.hdr
, SMB2_HDR_CREDIT
, credits
);
3254 SBVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
, mid
);
3256 state
->smb2
.cancel_flags
= 0;
3257 state
->smb2
.cancel_mid
= mid
;
3258 state
->smb2
.cancel_aid
= 0;
3261 if (state
->session
&& encryption_key
== NULL
) {
3263 * We prefer the channel signing key if it is
3266 if (state
->smb2
.should_sign
) {
3267 signing_key
= &state
->session
->smb2_channel
.signing_key
;
3271 * If it is a channel binding, we already have the main
3272 * signing key and try that one.
3274 if (signing_key
&& signing_key
->length
== 0) {
3275 signing_key
= &state
->session
->smb2
->signing_key
;
3279 * If we do not have any session key yet, we skip the
3280 * signing of SMB2_OP_SESSSETUP requests.
3282 if (signing_key
&& signing_key
->length
== 0) {
3288 iov
[num_iov
].iov_base
= state
->smb2
.hdr
;
3289 iov
[num_iov
].iov_len
= sizeof(state
->smb2
.hdr
);
3292 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.fixed
);
3293 iov
[num_iov
].iov_len
= state
->smb2
.fixed_len
;
3296 if (state
->smb2
.dyn
!= NULL
) {
3297 iov
[num_iov
].iov_base
= discard_const(state
->smb2
.dyn
);
3298 iov
[num_iov
].iov_len
= state
->smb2
.dyn_len
;
3302 reqlen
= sizeof(state
->smb2
.hdr
);
3303 reqlen
+= state
->smb2
.fixed_len
;
3304 reqlen
+= state
->smb2
.dyn_len
;
3306 if (i
< num_reqs
-1) {
3307 if ((reqlen
% 8) > 0) {
3308 uint8_t pad
= 8 - (reqlen
% 8);
3309 iov
[num_iov
].iov_base
= state
->smb2
.pad
;
3310 iov
[num_iov
].iov_len
= pad
;
3314 SIVAL(state
->smb2
.hdr
, SMB2_HDR_NEXT_COMMAND
, reqlen
);
3317 state
->smb2
.encryption_session_id
= encryption_session_id
;
3319 if (signing_key
!= NULL
) {
3322 status
= smb2_signing_sign_pdu(*signing_key
,
3323 state
->session
->conn
->protocol
,
3324 &iov
[hdr_iov
], num_iov
- hdr_iov
);
3325 if (!NT_STATUS_IS_OK(status
)) {
3332 ret
= smbXcli_req_set_pending(reqs
[i
]);
3334 return NT_STATUS_NO_MEMORY
;
3338 state
= tevent_req_data(reqs
[0], struct smbXcli_req_state
);
3339 _smb_setlen_tcp(state
->length_hdr
, nbt_len
);
3340 iov
[0].iov_base
= state
->length_hdr
;
3341 iov
[0].iov_len
= sizeof(state
->length_hdr
);
3343 if (encryption_key
!= NULL
) {
3345 size_t buflen
= nbt_len
- SMB2_TF_HDR_SIZE
;
3349 buf
= talloc_array(iov
, uint8_t, buflen
);
3351 return NT_STATUS_NO_MEMORY
;
3355 * We copy the buffers before encrypting them,
3356 * this is at least currently needed for the
3357 * to keep state->smb2.hdr.
3359 * Also the callers may expect there buffers
3362 for (vi
= tf_iov
+ 1; vi
< num_iov
; vi
++) {
3363 struct iovec
*v
= &iov
[vi
];
3364 const uint8_t *o
= (const uint8_t *)v
->iov_base
;
3366 memcpy(buf
, o
, v
->iov_len
);
3367 v
->iov_base
= (void *)buf
;
3371 status
= smb2_signing_encrypt_pdu(*encryption_key
,
3372 state
->conn
->smb2
.server
.cipher
,
3373 &iov
[tf_iov
], num_iov
- tf_iov
);
3374 if (!NT_STATUS_IS_OK(status
)) {
3379 if (state
->conn
->dispatch_incoming
== NULL
) {
3380 state
->conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
3383 subreq
= writev_send(state
, state
->ev
, state
->conn
->outgoing
,
3384 state
->conn
->sock_fd
, false, iov
, num_iov
);
3385 if (subreq
== NULL
) {
3386 return NT_STATUS_NO_MEMORY
;
3388 tevent_req_set_callback(subreq
, smb2cli_req_writev_done
, reqs
[0]);
3389 state
->write_req
= subreq
;
3391 return NT_STATUS_OK
;
3394 void smb2cli_req_set_credit_charge(struct tevent_req
*req
, uint16_t charge
)
3396 struct smbXcli_req_state
*state
=
3397 tevent_req_data(req
,
3398 struct smbXcli_req_state
);
3400 state
->smb2
.credit_charge
= charge
;
3403 struct tevent_req
*smb2cli_req_send(TALLOC_CTX
*mem_ctx
,
3404 struct tevent_context
*ev
,
3405 struct smbXcli_conn
*conn
,
3407 uint32_t additional_flags
,
3408 uint32_t clear_flags
,
3409 uint32_t timeout_msec
,
3410 struct smbXcli_tcon
*tcon
,
3411 struct smbXcli_session
*session
,
3412 const uint8_t *fixed
,
3416 uint32_t max_dyn_len
)
3418 struct tevent_req
*req
;
3421 req
= smb2cli_req_create(mem_ctx
, ev
, conn
, cmd
,
3422 additional_flags
, clear_flags
,
3431 if (!tevent_req_is_in_progress(req
)) {
3432 return tevent_req_post(req
, ev
);
3434 status
= smb2cli_req_compound_submit(&req
, 1);
3435 if (tevent_req_nterror(req
, status
)) {
3436 return tevent_req_post(req
, ev
);
3441 static void smb2cli_req_writev_done(struct tevent_req
*subreq
)
3443 struct tevent_req
*req
=
3444 tevent_req_callback_data(subreq
,
3446 struct smbXcli_req_state
*state
=
3447 tevent_req_data(req
,
3448 struct smbXcli_req_state
);
3452 state
->write_req
= NULL
;
3454 nwritten
= writev_recv(subreq
, &err
);
3455 TALLOC_FREE(subreq
);
3456 if (nwritten
== -1) {
3457 /* here, we need to notify all pending requests */
3458 NTSTATUS status
= map_nt_error_from_unix_common(err
);
3459 smbXcli_conn_disconnect(state
->conn
, status
);
3464 static struct smbXcli_session
* smbXcli_session_by_uid(struct smbXcli_conn
*conn
,
3467 struct smbXcli_session
*s
= conn
->sessions
;
3469 for (; s
; s
= s
->next
) {
3470 if (s
->smb2
->session_id
!= uid
) {
3479 static NTSTATUS
smb2cli_inbuf_parse_compound(struct smbXcli_conn
*conn
,
3482 TALLOC_CTX
*mem_ctx
,
3483 struct iovec
**piov
,
3489 uint8_t *first_hdr
= buf
;
3490 size_t verified_buflen
= 0;
3494 iov
= talloc_array(mem_ctx
, struct iovec
, num_iov
);
3496 return NT_STATUS_NO_MEMORY
;
3499 while (taken
< buflen
) {
3500 size_t len
= buflen
- taken
;
3501 uint8_t *hdr
= first_hdr
+ taken
;
3504 size_t next_command_ofs
;
3506 struct iovec
*iov_tmp
;
3508 if (verified_buflen
> taken
) {
3509 len
= verified_buflen
- taken
;
3516 DEBUG(10, ("%d bytes left, expected at least %d\n",
3520 if (IVAL(hdr
, 0) == SMB2_TF_MAGIC
) {
3521 struct smbXcli_session
*s
;
3523 struct iovec tf_iov
[2];
3527 if (len
< SMB2_TF_HDR_SIZE
) {
3528 DEBUG(10, ("%d bytes left, expected at least %d\n",
3529 (int)len
, SMB2_TF_HDR_SIZE
));
3533 tf_len
= SMB2_TF_HDR_SIZE
;
3536 hdr
= first_hdr
+ taken
;
3537 enc_len
= IVAL(tf
, SMB2_TF_MSG_SIZE
);
3538 uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3540 if (len
< SMB2_TF_HDR_SIZE
+ enc_len
) {
3541 DEBUG(10, ("%d bytes left, expected at least %d\n",
3543 (int)(SMB2_TF_HDR_SIZE
+ enc_len
)));
3547 s
= smbXcli_session_by_uid(conn
, uid
);
3549 DEBUG(10, ("unknown session_id %llu\n",
3550 (unsigned long long)uid
));
3554 tf_iov
[0].iov_base
= (void *)tf
;
3555 tf_iov
[0].iov_len
= tf_len
;
3556 tf_iov
[1].iov_base
= (void *)hdr
;
3557 tf_iov
[1].iov_len
= enc_len
;
3559 status
= smb2_signing_decrypt_pdu(s
->smb2
->decryption_key
,
3560 conn
->smb2
.server
.cipher
,
3562 if (!NT_STATUS_IS_OK(status
)) {
3567 verified_buflen
= taken
+ enc_len
;
3572 * We need the header plus the body length field
3575 if (len
< SMB2_HDR_BODY
+ 2) {
3576 DEBUG(10, ("%d bytes left, expected at least %d\n",
3577 (int)len
, SMB2_HDR_BODY
));
3580 if (IVAL(hdr
, 0) != SMB2_MAGIC
) {
3581 DEBUG(10, ("Got non-SMB2 PDU: %x\n",
3585 if (SVAL(hdr
, 4) != SMB2_HDR_BODY
) {
3586 DEBUG(10, ("Got HDR len %d, expected %d\n",
3587 SVAL(hdr
, 4), SMB2_HDR_BODY
));
3592 next_command_ofs
= IVAL(hdr
, SMB2_HDR_NEXT_COMMAND
);
3593 body_size
= SVAL(hdr
, SMB2_HDR_BODY
);
3595 if (next_command_ofs
!= 0) {
3596 if (next_command_ofs
< (SMB2_HDR_BODY
+ 2)) {
3599 if (next_command_ofs
> full_size
) {
3602 full_size
= next_command_ofs
;
3604 if (body_size
< 2) {
3607 body_size
&= 0xfffe;
3609 if (body_size
> (full_size
- SMB2_HDR_BODY
)) {
3613 iov_tmp
= talloc_realloc(mem_ctx
, iov
, struct iovec
,
3615 if (iov_tmp
== NULL
) {
3617 return NT_STATUS_NO_MEMORY
;
3620 cur
= &iov
[num_iov
];
3623 cur
[0].iov_base
= tf
;
3624 cur
[0].iov_len
= tf_len
;
3625 cur
[1].iov_base
= hdr
;
3626 cur
[1].iov_len
= SMB2_HDR_BODY
;
3627 cur
[2].iov_base
= hdr
+ SMB2_HDR_BODY
;
3628 cur
[2].iov_len
= body_size
;
3629 cur
[3].iov_base
= hdr
+ SMB2_HDR_BODY
+ body_size
;
3630 cur
[3].iov_len
= full_size
- (SMB2_HDR_BODY
+ body_size
);
3636 *pnum_iov
= num_iov
;
3637 return NT_STATUS_OK
;
3641 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3644 static struct tevent_req
*smb2cli_conn_find_pending(struct smbXcli_conn
*conn
,
3647 size_t num_pending
= talloc_array_length(conn
->pending
);
3650 for (i
=0; i
<num_pending
; i
++) {
3651 struct tevent_req
*req
= conn
->pending
[i
];
3652 struct smbXcli_req_state
*state
=
3653 tevent_req_data(req
,
3654 struct smbXcli_req_state
);
3656 if (mid
== BVAL(state
->smb2
.hdr
, SMB2_HDR_MESSAGE_ID
)) {
3663 static NTSTATUS
smb2cli_conn_dispatch_incoming(struct smbXcli_conn
*conn
,
3664 TALLOC_CTX
*tmp_mem
,
3667 struct tevent_req
*req
;
3668 struct smbXcli_req_state
*state
= NULL
;
3669 struct iovec
*iov
= NULL
;
3670 size_t i
, num_iov
= 0;
3673 struct smbXcli_session
*last_session
= NULL
;
3674 size_t inbuf_len
= smb_len_tcp(inbuf
);
3676 status
= smb2cli_inbuf_parse_compound(conn
,
3677 inbuf
+ NBT_HDR_SIZE
,
3681 if (!NT_STATUS_IS_OK(status
)) {
3685 for (i
=0; i
<num_iov
; i
+=4) {
3686 uint8_t *inbuf_ref
= NULL
;
3687 struct iovec
*cur
= &iov
[i
];
3688 uint8_t *inhdr
= (uint8_t *)cur
[1].iov_base
;
3689 uint16_t opcode
= SVAL(inhdr
, SMB2_HDR_OPCODE
);
3690 uint32_t flags
= IVAL(inhdr
, SMB2_HDR_FLAGS
);
3691 uint64_t mid
= BVAL(inhdr
, SMB2_HDR_MESSAGE_ID
);
3692 uint16_t req_opcode
;
3694 uint16_t credits
= SVAL(inhdr
, SMB2_HDR_CREDIT
);
3695 uint32_t new_credits
;
3696 struct smbXcli_session
*session
= NULL
;
3697 const DATA_BLOB
*signing_key
= NULL
;
3698 bool was_encrypted
= false;
3700 new_credits
= conn
->smb2
.cur_credits
;
3701 new_credits
+= credits
;
3702 if (new_credits
> UINT16_MAX
) {
3703 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3705 conn
->smb2
.cur_credits
+= credits
;
3707 req
= smb2cli_conn_find_pending(conn
, mid
);
3709 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3711 state
= tevent_req_data(req
, struct smbXcli_req_state
);
3713 req_opcode
= SVAL(state
->smb2
.hdr
, SMB2_HDR_OPCODE
);
3714 if (opcode
!= req_opcode
) {
3715 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3717 req_flags
= SVAL(state
->smb2
.hdr
, SMB2_HDR_FLAGS
);
3719 if (!(flags
& SMB2_HDR_FLAG_REDIRECT
)) {
3720 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3723 status
= NT_STATUS(IVAL(inhdr
, SMB2_HDR_STATUS
));
3724 if ((flags
& SMB2_HDR_FLAG_ASYNC
) &&
3725 NT_STATUS_EQUAL(status
, STATUS_PENDING
)) {
3726 uint64_t async_id
= BVAL(inhdr
, SMB2_HDR_ASYNC_ID
);
3728 if (state
->smb2
.got_async
) {
3729 /* We only expect one STATUS_PENDING response */
3730 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3732 state
->smb2
.got_async
= true;
3735 * async interim responses are not signed,
3736 * even if the SMB2_HDR_FLAG_SIGNED flag
3739 state
->smb2
.cancel_flags
= SMB2_HDR_FLAG_ASYNC
;
3740 state
->smb2
.cancel_mid
= 0;
3741 state
->smb2
.cancel_aid
= async_id
;
3743 if (state
->smb2
.notify_async
) {
3744 tevent_req_defer_callback(req
, state
->ev
);
3745 tevent_req_notify_callback(req
);
3750 session
= state
->session
;
3751 if (req_flags
& SMB2_HDR_FLAG_CHAINED
) {
3752 session
= last_session
;
3754 last_session
= session
;
3756 if (state
->smb2
.should_sign
) {
3757 if (!(flags
& SMB2_HDR_FLAG_SIGNED
)) {
3758 return NT_STATUS_ACCESS_DENIED
;
3762 if (flags
& SMB2_HDR_FLAG_SIGNED
) {
3763 uint64_t uid
= BVAL(inhdr
, SMB2_HDR_SESSION_ID
);
3765 if (session
== NULL
) {
3766 session
= smbXcli_session_by_uid(state
->conn
,
3770 if (session
== NULL
) {
3771 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
3774 last_session
= session
;
3775 signing_key
= &session
->smb2_channel
.signing_key
;
3778 if (opcode
== SMB2_OP_SESSSETUP
) {
3780 * We prefer the channel signing key, if it is
3783 * If we do not have a channel signing key yet,
3784 * we try the main signing key, if it is not
3785 * the final response.
3787 if (signing_key
&& signing_key
->length
== 0 &&
3788 !NT_STATUS_IS_OK(status
)) {
3789 signing_key
= &session
->smb2
->signing_key
;
3792 if (signing_key
&& signing_key
->length
== 0) {
3794 * If we do not have a session key to
3795 * verify the signature, we defer the
3796 * signing check to the caller.
3798 * The caller gets NT_STATUS_OK, it
3800 * smb2cli_session_set_session_key()
3802 * smb2cli_session_set_channel_key()
3803 * which will check the signature
3804 * with the channel signing key.
3810 if (cur
[0].iov_len
== SMB2_TF_HDR_SIZE
) {
3811 const uint8_t *tf
= (const uint8_t *)cur
[0].iov_base
;
3812 uint64_t uid
= BVAL(tf
, SMB2_TF_SESSION_ID
);
3815 * If the response was encrypted in a SMB2_TRANSFORM
3816 * pdu, which belongs to the correct session,
3817 * we do not need to do signing checks
3819 * It could be the session the response belongs to
3820 * or the session that was used to encrypt the
3821 * SMB2_TRANSFORM request.
3823 if ((session
&& session
->smb2
->session_id
== uid
) ||
3824 (state
->smb2
.encryption_session_id
== uid
)) {
3826 was_encrypted
= true;
3830 if (NT_STATUS_EQUAL(status
, NT_STATUS_USER_SESSION_DELETED
)) {
3832 * if the server returns NT_STATUS_USER_SESSION_DELETED
3833 * the response is not signed and we should
3834 * propagate the NT_STATUS_USER_SESSION_DELETED
3835 * status to the caller.
3837 state
->smb2
.signing_skipped
= true;
3841 if (NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3843 * if the server returns
3844 * NT_STATUS_INVALID_PARAMETER
3845 * the response might not be encrypted.
3847 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3848 state
->smb2
.signing_skipped
= true;
3853 if (state
->smb2
.should_encrypt
&& !was_encrypted
) {
3854 if (!state
->smb2
.signing_skipped
) {
3855 return NT_STATUS_ACCESS_DENIED
;
3859 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_NAME_DELETED
) ||
3860 NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
) ||
3861 NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_PARAMETER
)) {
3863 * if the server returns
3864 * NT_STATUS_NETWORK_NAME_DELETED
3865 * NT_STATUS_FILE_CLOSED
3866 * NT_STATUS_INVALID_PARAMETER
3867 * the response might not be signed
3868 * as this happens before the signing checks.
3870 * If server echos the signature (or all zeros)
3871 * we should report the status from the server
3877 cmp
= memcmp(inhdr
+SMB2_HDR_SIGNATURE
,
3878 state
->smb2
.hdr
+SMB2_HDR_SIGNATURE
,
3881 state
->smb2
.signing_skipped
= true;
3887 zero
= all_zero(inhdr
+SMB2_HDR_SIGNATURE
, 16);
3889 state
->smb2
.signing_skipped
= true;
3896 status
= smb2_signing_check_pdu(*signing_key
,
3897 state
->conn
->protocol
,
3899 if (!NT_STATUS_IS_OK(status
)) {
3901 * If the signing check fails, we disconnect
3908 if (NT_STATUS_EQUAL(status
, NT_STATUS_NETWORK_SESSION_EXPIRED
) &&
3909 (session
!= NULL
) && session
->disconnect_expired
)
3912 * this should be a short term hack
3913 * until the upper layers have implemented
3914 * re-authentication.
3919 smbXcli_req_unset_pending(req
);
3922 * There might be more than one response
3923 * we need to defer the notifications
3925 if ((num_iov
== 5) && (talloc_array_length(conn
->pending
) == 0)) {
3930 tevent_req_defer_callback(req
, state
->ev
);
3934 * Note: here we use talloc_reference() in a way
3935 * that does not expose it to the caller.
3937 inbuf_ref
= talloc_reference(state
->smb2
.recv_iov
, inbuf
);
3938 if (tevent_req_nomem(inbuf_ref
, req
)) {
3942 /* copy the related buffers */
3943 state
->smb2
.recv_iov
[0] = cur
[1];
3944 state
->smb2
.recv_iov
[1] = cur
[2];
3945 state
->smb2
.recv_iov
[2] = cur
[3];
3947 tevent_req_done(req
);
3951 return NT_STATUS_RETRY
;
3954 return NT_STATUS_OK
;
3957 NTSTATUS
smb2cli_req_recv(struct tevent_req
*req
, TALLOC_CTX
*mem_ctx
,
3958 struct iovec
**piov
,
3959 const struct smb2cli_req_expected_response
*expected
,
3960 size_t num_expected
)
3962 struct smbXcli_req_state
*state
=
3963 tevent_req_data(req
,
3964 struct smbXcli_req_state
);
3967 bool found_status
= false;
3968 bool found_size
= false;
3975 if (tevent_req_is_in_progress(req
) && state
->smb2
.got_async
) {
3976 return STATUS_PENDING
;
3979 if (tevent_req_is_nterror(req
, &status
)) {
3980 for (i
=0; i
< num_expected
; i
++) {
3981 if (NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
3982 found_status
= true;
3988 return NT_STATUS_UNEXPECTED_NETWORK_ERROR
;
3994 if (num_expected
== 0) {
3995 found_status
= true;
3999 status
= NT_STATUS(IVAL(state
->smb2
.recv_iov
[0].iov_base
, SMB2_HDR_STATUS
));
4000 body_size
= SVAL(state
->smb2
.recv_iov
[1].iov_base
, 0);
4002 for (i
=0; i
< num_expected
; i
++) {
4003 if (!NT_STATUS_EQUAL(status
, expected
[i
].status
)) {
4007 found_status
= true;
4008 if (expected
[i
].body_size
== 0) {
4013 if (expected
[i
].body_size
== body_size
) {
4019 if (!found_status
) {
4023 if (state
->smb2
.signing_skipped
) {
4024 if (num_expected
> 0) {
4025 return NT_STATUS_ACCESS_DENIED
;
4027 if (!NT_STATUS_IS_ERR(status
)) {
4028 return NT_STATUS_ACCESS_DENIED
;
4033 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
4037 *piov
= talloc_move(mem_ctx
, &state
->smb2
.recv_iov
);
4043 NTSTATUS
smb2cli_req_get_sent_iov(struct tevent_req
*req
,
4044 struct iovec
*sent_iov
)
4046 struct smbXcli_req_state
*state
=
4047 tevent_req_data(req
,
4048 struct smbXcli_req_state
);
4050 if (tevent_req_is_in_progress(req
)) {
4051 return STATUS_PENDING
;
4054 sent_iov
[0].iov_base
= state
->smb2
.hdr
;
4055 sent_iov
[0].iov_len
= sizeof(state
->smb2
.hdr
);
4057 sent_iov
[1].iov_base
= discard_const(state
->smb2
.fixed
);
4058 sent_iov
[1].iov_len
= state
->smb2
.fixed_len
;
4060 if (state
->smb2
.dyn
!= NULL
) {
4061 sent_iov
[2].iov_base
= discard_const(state
->smb2
.dyn
);
4062 sent_iov
[2].iov_len
= state
->smb2
.dyn_len
;
4064 sent_iov
[2].iov_base
= NULL
;
4065 sent_iov
[2].iov_len
= 0;
4068 return NT_STATUS_OK
;
4071 static const struct {
4072 enum protocol_types proto
;
4073 const char *smb1_name
;
4074 } smb1cli_prots
[] = {
4075 {PROTOCOL_CORE
, "PC NETWORK PROGRAM 1.0"},
4076 {PROTOCOL_COREPLUS
, "MICROSOFT NETWORKS 1.03"},
4077 {PROTOCOL_LANMAN1
, "MICROSOFT NETWORKS 3.0"},
4078 {PROTOCOL_LANMAN1
, "LANMAN1.0"},
4079 {PROTOCOL_LANMAN2
, "LM1.2X002"},
4080 {PROTOCOL_LANMAN2
, "DOS LANMAN2.1"},
4081 {PROTOCOL_LANMAN2
, "LANMAN2.1"},
4082 {PROTOCOL_LANMAN2
, "Samba"},
4083 {PROTOCOL_NT1
, "NT LANMAN 1.0"},
4084 {PROTOCOL_NT1
, "NT LM 0.12"},
4085 {PROTOCOL_SMB2_02
, "SMB 2.002"},
4086 {PROTOCOL_SMB2_10
, "SMB 2.???"},
4089 static const struct {
4090 enum protocol_types proto
;
4091 uint16_t smb2_dialect
;
4092 } smb2cli_prots
[] = {
4093 {PROTOCOL_SMB2_02
, SMB2_DIALECT_REVISION_202
},
4094 {PROTOCOL_SMB2_10
, SMB2_DIALECT_REVISION_210
},
4095 {PROTOCOL_SMB2_22
, SMB2_DIALECT_REVISION_222
},
4096 {PROTOCOL_SMB2_24
, SMB2_DIALECT_REVISION_224
},
4097 {PROTOCOL_SMB3_00
, SMB3_DIALECT_REVISION_300
},
4098 {PROTOCOL_SMB3_02
, SMB3_DIALECT_REVISION_302
},
4099 {PROTOCOL_SMB3_10
, SMB3_DIALECT_REVISION_310
},
4100 {PROTOCOL_SMB3_11
, SMB3_DIALECT_REVISION_311
},
4103 struct smbXcli_negprot_state
{
4104 struct smbXcli_conn
*conn
;
4105 struct tevent_context
*ev
;
4106 uint32_t timeout_msec
;
4113 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
);
4114 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
);
4115 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
);
4116 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
);
4117 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
);
4118 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
4122 struct tevent_req
*smbXcli_negprot_send(TALLOC_CTX
*mem_ctx
,
4123 struct tevent_context
*ev
,
4124 struct smbXcli_conn
*conn
,
4125 uint32_t timeout_msec
,
4126 enum protocol_types min_protocol
,
4127 enum protocol_types max_protocol
,
4128 uint16_t max_credits
)
4130 struct tevent_req
*req
, *subreq
;
4131 struct smbXcli_negprot_state
*state
;
4133 req
= tevent_req_create(mem_ctx
, &state
,
4134 struct smbXcli_negprot_state
);
4140 state
->timeout_msec
= timeout_msec
;
4142 if (min_protocol
== PROTOCOL_NONE
) {
4143 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
4144 return tevent_req_post(req
, ev
);
4147 if (max_protocol
== PROTOCOL_NONE
) {
4148 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
4149 return tevent_req_post(req
, ev
);
4152 if (min_protocol
> max_protocol
) {
4153 tevent_req_nterror(req
, NT_STATUS_INVALID_PARAMETER_MIX
);
4154 return tevent_req_post(req
, ev
);
4157 conn
->min_protocol
= min_protocol
;
4158 conn
->max_protocol
= max_protocol
;
4159 conn
->protocol
= PROTOCOL_NONE
;
4161 if (max_protocol
>= PROTOCOL_SMB2_02
) {
4162 conn
->smb2
.max_credits
= max_credits
;
4165 if ((min_protocol
< PROTOCOL_SMB2_02
) &&
4166 (max_protocol
< PROTOCOL_SMB2_02
)) {
4170 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
4172 subreq
= smbXcli_negprot_smb1_subreq(state
);
4173 if (tevent_req_nomem(subreq
, req
)) {
4174 return tevent_req_post(req
, ev
);
4176 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
4180 if ((min_protocol
>= PROTOCOL_SMB2_02
) &&
4181 (max_protocol
>= PROTOCOL_SMB2_02
)) {
4185 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
4187 subreq
= smbXcli_negprot_smb2_subreq(state
);
4188 if (tevent_req_nomem(subreq
, req
)) {
4189 return tevent_req_post(req
, ev
);
4191 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4196 * We send an SMB1 negprot with the SMB2 dialects
4197 * and expect a SMB1 or a SMB2 response.
4199 * smbXcli_negprot_dispatch_incoming() will fix the
4200 * callback to match protocol of the response.
4202 conn
->dispatch_incoming
= smbXcli_negprot_dispatch_incoming
;
4204 subreq
= smbXcli_negprot_smb1_subreq(state
);
4205 if (tevent_req_nomem(subreq
, req
)) {
4206 return tevent_req_post(req
, ev
);
4208 tevent_req_set_callback(subreq
, smbXcli_negprot_invalid_done
, req
);
4212 static void smbXcli_negprot_invalid_done(struct tevent_req
*subreq
)
4214 struct tevent_req
*req
=
4215 tevent_req_callback_data(subreq
,
4220 * we just want the low level error
4222 status
= tevent_req_simple_recv_ntstatus(subreq
);
4223 TALLOC_FREE(subreq
);
4224 if (tevent_req_nterror(req
, status
)) {
4228 /* this should never happen */
4229 tevent_req_nterror(req
, NT_STATUS_INTERNAL_ERROR
);
4232 static struct tevent_req
*smbXcli_negprot_smb1_subreq(struct smbXcli_negprot_state
*state
)
4235 DATA_BLOB bytes
= data_blob_null
;
4239 /* setup the protocol strings */
4240 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
4244 if (smb1cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4248 if (smb1cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4252 ok
= data_blob_append(state
, &bytes
, &c
, sizeof(c
));
4258 * We now it is already ascii and
4259 * we want NULL termination.
4261 ok
= data_blob_append(state
, &bytes
,
4262 smb1cli_prots
[i
].smb1_name
,
4263 strlen(smb1cli_prots
[i
].smb1_name
)+1);
4269 smb1cli_req_flags(state
->conn
->max_protocol
,
4270 state
->conn
->smb1
.client
.capabilities
,
4275 return smb1cli_req_send(state
, state
->ev
, state
->conn
,
4279 state
->timeout_msec
,
4280 0xFFFE, 0, NULL
, /* pid, tid, session */
4281 0, NULL
, /* wct, vwv */
4282 bytes
.length
, bytes
.data
);
4285 static void smbXcli_negprot_smb1_done(struct tevent_req
*subreq
)
4287 struct tevent_req
*req
=
4288 tevent_req_callback_data(subreq
,
4290 struct smbXcli_negprot_state
*state
=
4291 tevent_req_data(req
,
4292 struct smbXcli_negprot_state
);
4293 struct smbXcli_conn
*conn
= state
->conn
;
4294 struct iovec
*recv_iov
= NULL
;
4303 size_t num_prots
= 0;
4305 uint32_t client_capabilities
= conn
->smb1
.client
.capabilities
;
4306 uint32_t both_capabilities
;
4307 uint32_t server_capabilities
= 0;
4308 uint32_t capabilities
;
4309 uint32_t client_max_xmit
= conn
->smb1
.client
.max_xmit
;
4310 uint32_t server_max_xmit
= 0;
4312 uint32_t server_max_mux
= 0;
4313 uint16_t server_security_mode
= 0;
4314 uint32_t server_session_key
= 0;
4315 bool server_readbraw
= false;
4316 bool server_writebraw
= false;
4317 bool server_lockread
= false;
4318 bool server_writeunlock
= false;
4319 struct GUID server_guid
= GUID_zero();
4320 DATA_BLOB server_gss_blob
= data_blob_null
;
4321 uint8_t server_challenge
[8];
4322 char *server_workgroup
= NULL
;
4323 char *server_name
= NULL
;
4324 int server_time_zone
= 0;
4325 NTTIME server_system_time
= 0;
4326 static const struct smb1cli_req_expected_response expected
[] = {
4328 .status
= NT_STATUS_OK
,
4329 .wct
= 0x11, /* NT1 */
4332 .status
= NT_STATUS_OK
,
4333 .wct
= 0x0D, /* LM */
4336 .status
= NT_STATUS_OK
,
4337 .wct
= 0x01, /* CORE */
4341 ZERO_STRUCT(server_challenge
);
4343 status
= smb1cli_req_recv(subreq
, state
,
4348 NULL
, /* pvwv_offset */
4351 NULL
, /* pbytes_offset */
4353 expected
, ARRAY_SIZE(expected
));
4354 TALLOC_FREE(subreq
);
4355 if (tevent_req_nterror(req
, status
)) {
4359 flags
= CVAL(inhdr
, HDR_FLG
);
4361 protnum
= SVAL(vwv
, 0);
4363 for (i
=0; i
< ARRAY_SIZE(smb1cli_prots
); i
++) {
4364 if (smb1cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4368 if (smb1cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4372 if (protnum
!= num_prots
) {
4377 conn
->protocol
= smb1cli_prots
[i
].proto
;
4381 if (conn
->protocol
== PROTOCOL_NONE
) {
4382 DBG_ERR("No compatible protocol selected by server.\n");
4383 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4387 if ((conn
->protocol
< PROTOCOL_NT1
) && conn
->mandatory_signing
) {
4388 DEBUG(0,("smbXcli_negprot: SMB signing is mandatory "
4389 "and the selected protocol level doesn't support it.\n"));
4390 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
4394 if (flags
& FLAG_SUPPORT_LOCKREAD
) {
4395 server_lockread
= true;
4396 server_writeunlock
= true;
4399 if (conn
->protocol
>= PROTOCOL_NT1
) {
4400 const char *client_signing
= NULL
;
4401 bool server_mandatory
= false;
4402 bool server_allowed
= false;
4403 const char *server_signing
= NULL
;
4408 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4413 server_security_mode
= CVAL(vwv
+ 1, 0);
4414 server_max_mux
= SVAL(vwv
+ 1, 1);
4415 server_max_xmit
= IVAL(vwv
+ 3, 1);
4416 server_session_key
= IVAL(vwv
+ 7, 1);
4417 server_time_zone
= SVALS(vwv
+ 15, 1);
4418 server_time_zone
*= 60;
4419 /* this time arrives in real GMT */
4420 server_system_time
= BVAL(vwv
+ 11, 1);
4421 server_capabilities
= IVAL(vwv
+ 9, 1);
4423 key_len
= CVAL(vwv
+ 16, 1);
4425 if (server_capabilities
& CAP_RAW_MODE
) {
4426 server_readbraw
= true;
4427 server_writebraw
= true;
4429 if (server_capabilities
& CAP_LOCK_AND_READ
) {
4430 server_lockread
= true;
4433 if (server_capabilities
& CAP_EXTENDED_SECURITY
) {
4434 DATA_BLOB blob1
, blob2
;
4436 if (num_bytes
< 16) {
4437 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4441 blob1
= data_blob_const(bytes
, 16);
4442 status
= GUID_from_data_blob(&blob1
, &server_guid
);
4443 if (tevent_req_nterror(req
, status
)) {
4447 blob1
= data_blob_const(bytes
+16, num_bytes
-16);
4448 blob2
= data_blob_dup_talloc(state
, blob1
);
4449 if (blob1
.length
> 0 &&
4450 tevent_req_nomem(blob2
.data
, req
)) {
4453 server_gss_blob
= blob2
;
4455 DATA_BLOB blob1
, blob2
;
4457 if (num_bytes
< key_len
) {
4458 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4462 if (key_len
!= 0 && key_len
!= 8) {
4463 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4468 memcpy(server_challenge
, bytes
, 8);
4471 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4472 blob2
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4473 if (blob1
.length
> 0) {
4476 len
= utf16_len_n(blob1
.data
,
4480 ok
= convert_string_talloc(state
,
4488 status
= map_nt_error_from_unix_common(errno
);
4489 tevent_req_nterror(req
, status
);
4494 blob2
.data
+= blob1
.length
;
4495 blob2
.length
-= blob1
.length
;
4496 if (blob2
.length
> 0) {
4499 len
= utf16_len_n(blob1
.data
,
4503 ok
= convert_string_talloc(state
,
4511 status
= map_nt_error_from_unix_common(errno
);
4512 tevent_req_nterror(req
, status
);
4518 client_signing
= "disabled";
4519 if (conn
->allow_signing
) {
4520 client_signing
= "allowed";
4522 if (conn
->mandatory_signing
) {
4523 client_signing
= "required";
4526 server_signing
= "not supported";
4527 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_ENABLED
) {
4528 server_signing
= "supported";
4529 server_allowed
= true;
4530 } else if (conn
->mandatory_signing
) {
4532 * We have mandatory signing as client
4533 * lets assume the server will look at our
4534 * FLAGS2_SMB_SECURITY_SIGNATURES_REQUIRED
4535 * flag in the session setup
4537 server_signing
= "not announced";
4538 server_allowed
= true;
4540 if (server_security_mode
& NEGOTIATE_SECURITY_SIGNATURES_REQUIRED
) {
4541 server_signing
= "required";
4542 server_mandatory
= true;
4545 ok
= smb_signing_set_negotiated(conn
->smb1
.signing
,
4549 DEBUG(1,("cli_negprot: SMB signing is required, "
4550 "but client[%s] and server[%s] mismatch\n",
4551 client_signing
, server_signing
));
4552 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
4556 } else if (conn
->protocol
>= PROTOCOL_LANMAN1
) {
4562 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4566 server_security_mode
= SVAL(vwv
+ 1, 0);
4567 server_max_xmit
= SVAL(vwv
+ 2, 0);
4568 server_max_mux
= SVAL(vwv
+ 3, 0);
4569 server_readbraw
= ((SVAL(vwv
+ 5, 0) & 0x1) != 0);
4570 server_writebraw
= ((SVAL(vwv
+ 5, 0) & 0x2) != 0);
4571 server_session_key
= IVAL(vwv
+ 6, 0);
4572 server_time_zone
= SVALS(vwv
+ 10, 0);
4573 server_time_zone
*= 60;
4574 /* this time is converted to GMT by make_unix_date */
4575 t
= pull_dos_date((const uint8_t *)(vwv
+ 8), server_time_zone
);
4576 unix_to_nt_time(&server_system_time
, t
);
4577 key_len
= SVAL(vwv
+ 11, 0);
4579 if (num_bytes
< key_len
) {
4580 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4584 if (key_len
!= 0 && key_len
!= 8) {
4585 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4590 memcpy(server_challenge
, bytes
, 8);
4593 blob1
= data_blob_const(bytes
+key_len
, num_bytes
-key_len
);
4594 if (blob1
.length
> 0) {
4598 len
= utf16_len_n(blob1
.data
,
4602 ok
= convert_string_talloc(state
,
4610 status
= map_nt_error_from_unix_common(errno
);
4611 tevent_req_nterror(req
, status
);
4617 /* the old core protocol */
4618 server_time_zone
= get_time_zone(time(NULL
));
4619 server_max_xmit
= 1024;
4623 if (server_max_xmit
< 1024) {
4624 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4628 if (server_max_mux
< 1) {
4629 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4634 * Now calculate the negotiated capabilities
4635 * based on the mask for:
4636 * - client only flags
4637 * - flags used in both directions
4638 * - server only flags
4640 both_capabilities
= client_capabilities
& server_capabilities
;
4641 capabilities
= client_capabilities
& SMB_CAP_CLIENT_MASK
;
4642 capabilities
|= both_capabilities
& SMB_CAP_BOTH_MASK
;
4643 capabilities
|= server_capabilities
& SMB_CAP_SERVER_MASK
;
4645 max_xmit
= MIN(client_max_xmit
, server_max_xmit
);
4647 conn
->smb1
.server
.capabilities
= server_capabilities
;
4648 conn
->smb1
.capabilities
= capabilities
;
4650 conn
->smb1
.server
.max_xmit
= server_max_xmit
;
4651 conn
->smb1
.max_xmit
= max_xmit
;
4653 conn
->smb1
.server
.max_mux
= server_max_mux
;
4655 conn
->smb1
.server
.security_mode
= server_security_mode
;
4657 conn
->smb1
.server
.readbraw
= server_readbraw
;
4658 conn
->smb1
.server
.writebraw
= server_writebraw
;
4659 conn
->smb1
.server
.lockread
= server_lockread
;
4660 conn
->smb1
.server
.writeunlock
= server_writeunlock
;
4662 conn
->smb1
.server
.session_key
= server_session_key
;
4664 talloc_steal(conn
, server_gss_blob
.data
);
4665 conn
->smb1
.server
.gss_blob
= server_gss_blob
;
4666 conn
->smb1
.server
.guid
= server_guid
;
4667 memcpy(conn
->smb1
.server
.challenge
, server_challenge
, 8);
4668 conn
->smb1
.server
.workgroup
= talloc_move(conn
, &server_workgroup
);
4669 conn
->smb1
.server
.name
= talloc_move(conn
, &server_name
);
4671 conn
->smb1
.server
.time_zone
= server_time_zone
;
4672 conn
->smb1
.server
.system_time
= server_system_time
;
4674 tevent_req_done(req
);
4677 static size_t smbXcli_padding_helper(uint32_t offset
, size_t n
)
4679 if ((offset
& (n
-1)) == 0) return 0;
4680 return n
- (offset
& (n
-1));
4683 static struct tevent_req
*smbXcli_negprot_smb2_subreq(struct smbXcli_negprot_state
*state
)
4687 uint16_t dialect_count
= 0;
4688 DATA_BLOB dyn
= data_blob_null
;
4690 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4694 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4698 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4702 SSVAL(val
, 0, smb2cli_prots
[i
].smb2_dialect
);
4704 ok
= data_blob_append(state
, &dyn
, val
, sizeof(val
));
4712 buf
= state
->smb2
.fixed
;
4714 SSVAL(buf
, 2, dialect_count
);
4715 SSVAL(buf
, 4, state
->conn
->smb2
.client
.security_mode
);
4716 SSVAL(buf
, 6, 0); /* Reserved */
4717 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_22
) {
4718 SIVAL(buf
, 8, state
->conn
->smb2
.client
.capabilities
);
4720 SIVAL(buf
, 8, 0); /* Capabilities */
4722 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_10
) {
4726 status
= GUID_to_ndr_blob(&state
->conn
->smb2
.client
.guid
,
4728 if (!NT_STATUS_IS_OK(status
)) {
4731 memcpy(buf
+12, blob
.data
, 16); /* ClientGuid */
4733 memset(buf
+12, 0, 16); /* ClientGuid */
4736 if (state
->conn
->max_protocol
>= PROTOCOL_SMB3_10
) {
4738 struct smb2_negotiate_contexts c
= { .num_contexts
= 0, };
4742 const uint8_t zeros
[8] = {0, };
4746 SSVAL(p
, 0, 1); /* HashAlgorithmCount */
4747 SSVAL(p
, 2, 32); /* SaltLength */
4748 SSVAL(p
, 4, SMB2_PREAUTH_INTEGRITY_SHA512
);
4749 generate_random_buffer(p
+ 6, 32);
4751 b
= data_blob_const(p
, 38);
4752 status
= smb2_negotiate_context_add(state
, &c
,
4753 SMB2_PREAUTH_INTEGRITY_CAPABILITIES
, b
);
4754 if (!NT_STATUS_IS_OK(status
)) {
4758 SSVAL(p
, 0, 2); /* ChiperCount */
4760 * For now we preferr CCM because our implementation
4761 * is faster than GCM, see bug #11451.
4763 SSVAL(p
, 2, SMB2_ENCRYPTION_AES128_CCM
);
4764 SSVAL(p
, 4, SMB2_ENCRYPTION_AES128_GCM
);
4766 b
= data_blob_const(p
, 6);
4767 status
= smb2_negotiate_context_add(state
, &c
,
4768 SMB2_ENCRYPTION_CAPABILITIES
, b
);
4769 if (!NT_STATUS_IS_OK(status
)) {
4773 status
= smb2_negotiate_context_push(state
, &b
, c
);
4774 if (!NT_STATUS_IS_OK(status
)) {
4778 offset
= SMB2_HDR_BODY
+ sizeof(state
->smb2
.fixed
) + dyn
.length
;
4779 pad
= smbXcli_padding_helper(offset
, 8);
4781 ok
= data_blob_append(state
, &dyn
, zeros
, pad
);
4787 ok
= data_blob_append(state
, &dyn
, b
.data
, b
.length
);
4792 SIVAL(buf
, 28, offset
); /* NegotiateContextOffset */
4793 SSVAL(buf
, 32, c
.num_contexts
); /* NegotiateContextCount */
4794 SSVAL(buf
, 34, 0); /* Reserved */
4796 SBVAL(buf
, 28, 0); /* Reserved/ClientStartTime */
4799 return smb2cli_req_send(state
, state
->ev
,
4800 state
->conn
, SMB2_OP_NEGPROT
,
4802 state
->timeout_msec
,
4803 NULL
, NULL
, /* tcon, session */
4804 state
->smb2
.fixed
, sizeof(state
->smb2
.fixed
),
4805 dyn
.data
, dyn
.length
,
4806 UINT16_MAX
); /* max_dyn_len */
4809 static void smbXcli_negprot_smb2_done(struct tevent_req
*subreq
)
4811 struct tevent_req
*req
=
4812 tevent_req_callback_data(subreq
,
4814 struct smbXcli_negprot_state
*state
=
4815 tevent_req_data(req
,
4816 struct smbXcli_negprot_state
);
4817 struct smbXcli_conn
*conn
= state
->conn
;
4818 size_t security_offset
, security_length
;
4824 uint16_t dialect_revision
;
4825 struct smb2_negotiate_contexts c
= { .num_contexts
= 0, };
4826 uint32_t negotiate_context_offset
= 0;
4827 uint16_t negotiate_context_count
= 0;
4828 DATA_BLOB negotiate_context_blob
= data_blob_null
;
4832 struct smb2_negotiate_context
*preauth
= NULL
;
4833 uint16_t hash_count
;
4834 uint16_t salt_length
;
4835 uint16_t hash_selected
;
4836 struct hc_sha512state sctx
;
4837 struct smb2_negotiate_context
*cipher
= NULL
;
4838 struct iovec sent_iov
[3];
4839 static const struct smb2cli_req_expected_response expected
[] = {
4841 .status
= NT_STATUS_OK
,
4846 status
= smb2cli_req_recv(subreq
, state
, &iov
,
4847 expected
, ARRAY_SIZE(expected
));
4848 if (tevent_req_nterror(req
, status
)) {
4852 body
= (uint8_t *)iov
[1].iov_base
;
4854 dialect_revision
= SVAL(body
, 4);
4856 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
4857 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
4861 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
4865 if (smb2cli_prots
[i
].smb2_dialect
!= dialect_revision
) {
4869 conn
->protocol
= smb2cli_prots
[i
].proto
;
4873 if (conn
->protocol
== PROTOCOL_NONE
) {
4874 TALLOC_FREE(subreq
);
4876 if (state
->conn
->min_protocol
>= PROTOCOL_SMB2_02
) {
4877 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4881 if (dialect_revision
!= SMB2_DIALECT_REVISION_2FF
) {
4882 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4886 /* make sure we do not loop forever */
4887 state
->conn
->min_protocol
= PROTOCOL_SMB2_02
;
4890 * send a SMB2 negprot, in order to negotiate
4893 subreq
= smbXcli_negprot_smb2_subreq(state
);
4894 if (tevent_req_nomem(subreq
, req
)) {
4897 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
4901 conn
->smb2
.server
.security_mode
= SVAL(body
, 2);
4902 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
4903 negotiate_context_count
= SVAL(body
, 6);
4906 blob
= data_blob_const(body
+ 8, 16);
4907 status
= GUID_from_data_blob(&blob
, &conn
->smb2
.server
.guid
);
4908 if (tevent_req_nterror(req
, status
)) {
4912 conn
->smb2
.server
.capabilities
= IVAL(body
, 24);
4913 conn
->smb2
.server
.max_trans_size
= IVAL(body
, 28);
4914 conn
->smb2
.server
.max_read_size
= IVAL(body
, 32);
4915 conn
->smb2
.server
.max_write_size
= IVAL(body
, 36);
4916 conn
->smb2
.server
.system_time
= BVAL(body
, 40);
4917 conn
->smb2
.server
.start_time
= BVAL(body
, 48);
4919 security_offset
= SVAL(body
, 56);
4920 security_length
= SVAL(body
, 58);
4922 if (security_offset
!= SMB2_HDR_BODY
+ iov
[1].iov_len
) {
4923 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4927 if (security_length
> iov
[2].iov_len
) {
4928 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4932 conn
->smb2
.server
.gss_blob
= data_blob_talloc(conn
,
4935 if (tevent_req_nomem(conn
->smb2
.server
.gss_blob
.data
, req
)) {
4939 if (conn
->protocol
< PROTOCOL_SMB3_10
) {
4940 TALLOC_FREE(subreq
);
4942 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
) {
4943 conn
->smb2
.server
.cipher
= SMB2_ENCRYPTION_AES128_CCM
;
4945 tevent_req_done(req
);
4950 * Here we are now at SMB3_11, so encryption should be
4951 * negotiated via context, not capabilities.
4954 if (conn
->smb2
.server
.capabilities
& SMB2_CAP_ENCRYPTION
) {
4956 * Server set SMB2_CAP_ENCRYPTION capability,
4957 * but *SHOULD* not, not *MUST* not. Just mask it off.
4958 * NetApp seems to do this:
4959 * BUG: https://bugzilla.samba.org/show_bug.cgi?id=13009
4961 conn
->smb2
.server
.capabilities
&= ~SMB2_CAP_ENCRYPTION
;
4964 negotiate_context_offset
= IVAL(body
, 60);
4965 if (negotiate_context_offset
< security_offset
) {
4966 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4970 ctx_ofs
= negotiate_context_offset
- security_offset
;
4971 if (ctx_ofs
> iov
[2].iov_len
) {
4972 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4975 avail
= iov
[2].iov_len
- security_length
;
4976 needed
= iov
[2].iov_len
- ctx_ofs
;
4977 if (needed
> avail
) {
4978 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4982 negotiate_context_blob
.data
= (uint8_t *)iov
[2].iov_base
;
4983 negotiate_context_blob
.length
= iov
[2].iov_len
;
4985 negotiate_context_blob
.data
+= ctx_ofs
;
4986 negotiate_context_blob
.length
-= ctx_ofs
;
4988 status
= smb2_negotiate_context_parse(state
, negotiate_context_blob
, &c
);
4989 if (tevent_req_nterror(req
, status
)) {
4993 if (negotiate_context_count
!= c
.num_contexts
) {
4994 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
4998 preauth
= smb2_negotiate_context_find(&c
,
4999 SMB2_PREAUTH_INTEGRITY_CAPABILITIES
);
5000 if (preauth
== NULL
) {
5001 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5005 if (preauth
->data
.length
< 6) {
5006 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5010 hash_count
= SVAL(preauth
->data
.data
, 0);
5011 salt_length
= SVAL(preauth
->data
.data
, 2);
5012 hash_selected
= SVAL(preauth
->data
.data
, 4);
5014 if (hash_count
!= 1) {
5015 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5019 if (preauth
->data
.length
!= (6 + salt_length
)) {
5020 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5024 if (hash_selected
!= SMB2_PREAUTH_INTEGRITY_SHA512
) {
5025 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5029 cipher
= smb2_negotiate_context_find(&c
, SMB2_ENCRYPTION_CAPABILITIES
);
5030 if (cipher
!= NULL
) {
5031 uint16_t cipher_count
;
5033 if (cipher
->data
.length
< 2) {
5034 tevent_req_nterror(req
,
5035 NT_STATUS_INVALID_NETWORK_RESPONSE
);
5039 cipher_count
= SVAL(cipher
->data
.data
, 0);
5041 if (cipher_count
> 1) {
5042 tevent_req_nterror(req
,
5043 NT_STATUS_INVALID_NETWORK_RESPONSE
);
5047 if (cipher
->data
.length
!= (2 + 2 * cipher_count
)) {
5048 tevent_req_nterror(req
,
5049 NT_STATUS_INVALID_NETWORK_RESPONSE
);
5053 if (cipher_count
== 1) {
5054 uint16_t cipher_selected
;
5056 cipher_selected
= SVAL(cipher
->data
.data
, 2);
5058 switch (cipher_selected
) {
5059 case SMB2_ENCRYPTION_AES128_GCM
:
5060 case SMB2_ENCRYPTION_AES128_CCM
:
5061 conn
->smb2
.server
.cipher
= cipher_selected
;
5067 /* First we hash the request */
5068 smb2cli_req_get_sent_iov(subreq
, sent_iov
);
5069 samba_SHA512_Init(&sctx
);
5070 samba_SHA512_Update(&sctx
, conn
->smb2
.preauth_sha512
,
5071 sizeof(conn
->smb2
.preauth_sha512
));
5072 for (i
= 0; i
< 3; i
++) {
5073 samba_SHA512_Update(&sctx
, sent_iov
[i
].iov_base
, sent_iov
[i
].iov_len
);
5075 samba_SHA512_Final(conn
->smb2
.preauth_sha512
, &sctx
);
5076 TALLOC_FREE(subreq
);
5078 /* And now we hash the response */
5079 samba_SHA512_Init(&sctx
);
5080 samba_SHA512_Update(&sctx
, conn
->smb2
.preauth_sha512
,
5081 sizeof(conn
->smb2
.preauth_sha512
));
5082 for (i
= 0; i
< 3; i
++) {
5083 samba_SHA512_Update(&sctx
, iov
[i
].iov_base
, iov
[i
].iov_len
);
5085 samba_SHA512_Final(conn
->smb2
.preauth_sha512
, &sctx
);
5087 tevent_req_done(req
);
5090 static NTSTATUS
smbXcli_negprot_dispatch_incoming(struct smbXcli_conn
*conn
,
5091 TALLOC_CTX
*tmp_mem
,
5094 size_t num_pending
= talloc_array_length(conn
->pending
);
5095 struct tevent_req
*subreq
;
5096 struct smbXcli_req_state
*substate
;
5097 struct tevent_req
*req
;
5098 uint32_t protocol_magic
;
5099 size_t inbuf_len
= smb_len_nbt(inbuf
);
5101 if (num_pending
!= 1) {
5102 return NT_STATUS_INTERNAL_ERROR
;
5105 if (inbuf_len
< 4) {
5106 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
5109 subreq
= conn
->pending
[0];
5110 substate
= tevent_req_data(subreq
, struct smbXcli_req_state
);
5111 req
= tevent_req_callback_data(subreq
, struct tevent_req
);
5113 protocol_magic
= IVAL(inbuf
, 4);
5115 switch (protocol_magic
) {
5117 tevent_req_set_callback(subreq
, smbXcli_negprot_smb1_done
, req
);
5118 conn
->dispatch_incoming
= smb1cli_conn_dispatch_incoming
;
5119 return smb1cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
5122 if (substate
->smb2
.recv_iov
== NULL
) {
5124 * For the SMB1 negprot we have move it.
5126 substate
->smb2
.recv_iov
= substate
->smb1
.recv_iov
;
5127 substate
->smb1
.recv_iov
= NULL
;
5131 * we got an SMB2 answer, which consumed sequence number 0
5132 * so we need to use 1 as the next one.
5134 * we also need to set the current credits to 0
5135 * as we consumed the initial one. The SMB2 answer
5136 * hopefully grant us a new credit.
5139 conn
->smb2
.cur_credits
= 0;
5140 tevent_req_set_callback(subreq
, smbXcli_negprot_smb2_done
, req
);
5141 conn
->dispatch_incoming
= smb2cli_conn_dispatch_incoming
;
5142 return smb2cli_conn_dispatch_incoming(conn
, tmp_mem
, inbuf
);
5145 DEBUG(10, ("Got non-SMB PDU\n"));
5146 return NT_STATUS_INVALID_NETWORK_RESPONSE
;
5149 NTSTATUS
smbXcli_negprot_recv(struct tevent_req
*req
)
5151 return tevent_req_simple_recv_ntstatus(req
);
5154 NTSTATUS
smbXcli_negprot(struct smbXcli_conn
*conn
,
5155 uint32_t timeout_msec
,
5156 enum protocol_types min_protocol
,
5157 enum protocol_types max_protocol
)
5159 TALLOC_CTX
*frame
= talloc_stackframe();
5160 struct tevent_context
*ev
;
5161 struct tevent_req
*req
;
5162 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
5165 if (smbXcli_conn_has_async_calls(conn
)) {
5167 * Can't use sync call while an async call is in flight
5169 status
= NT_STATUS_INVALID_PARAMETER_MIX
;
5172 ev
= samba_tevent_context_init(frame
);
5176 req
= smbXcli_negprot_send(frame
, ev
, conn
, timeout_msec
,
5177 min_protocol
, max_protocol
,
5178 WINDOWS_CLIENT_PURE_SMB2_NEGPROT_INITIAL_CREDIT_ASK
);
5182 ok
= tevent_req_poll_ntstatus(req
, ev
, &status
);
5186 status
= smbXcli_negprot_recv(req
);
5192 struct smb2cli_validate_negotiate_info_state
{
5193 struct smbXcli_conn
*conn
;
5194 DATA_BLOB in_input_buffer
;
5195 DATA_BLOB in_output_buffer
;
5196 DATA_BLOB out_input_buffer
;
5197 DATA_BLOB out_output_buffer
;
5201 static void smb2cli_validate_negotiate_info_done(struct tevent_req
*subreq
);
5203 struct tevent_req
*smb2cli_validate_negotiate_info_send(TALLOC_CTX
*mem_ctx
,
5204 struct tevent_context
*ev
,
5205 struct smbXcli_conn
*conn
,
5206 uint32_t timeout_msec
,
5207 struct smbXcli_session
*session
,
5208 struct smbXcli_tcon
*tcon
)
5210 struct tevent_req
*req
;
5211 struct smb2cli_validate_negotiate_info_state
*state
;
5213 uint16_t dialect_count
= 0;
5214 struct tevent_req
*subreq
;
5215 bool _save_should_sign
;
5218 req
= tevent_req_create(mem_ctx
, &state
,
5219 struct smb2cli_validate_negotiate_info_state
);
5225 state
->in_input_buffer
= data_blob_talloc_zero(state
,
5226 4 + 16 + 1 + 1 + 2);
5227 if (tevent_req_nomem(state
->in_input_buffer
.data
, req
)) {
5228 return tevent_req_post(req
, ev
);
5230 buf
= state
->in_input_buffer
.data
;
5232 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_22
) {
5233 SIVAL(buf
, 0, conn
->smb2
.client
.capabilities
);
5235 SIVAL(buf
, 0, 0); /* Capabilities */
5237 if (state
->conn
->max_protocol
>= PROTOCOL_SMB2_10
) {
5241 status
= GUID_to_ndr_blob(&conn
->smb2
.client
.guid
,
5243 if (!NT_STATUS_IS_OK(status
)) {
5246 memcpy(buf
+4, blob
.data
, 16); /* ClientGuid */
5248 memset(buf
+4, 0, 16); /* ClientGuid */
5250 if (state
->conn
->min_protocol
>= PROTOCOL_SMB2_02
) {
5251 SCVAL(buf
, 20, conn
->smb2
.client
.security_mode
);
5255 SCVAL(buf
, 21, 0); /* reserved */
5257 for (i
=0; i
< ARRAY_SIZE(smb2cli_prots
); i
++) {
5261 if (smb2cli_prots
[i
].proto
< state
->conn
->min_protocol
) {
5265 if (smb2cli_prots
[i
].proto
> state
->conn
->max_protocol
) {
5269 if (smb2cli_prots
[i
].proto
== state
->conn
->protocol
) {
5270 state
->dialect
= smb2cli_prots
[i
].smb2_dialect
;
5273 ofs
= state
->in_input_buffer
.length
;
5274 ok
= data_blob_realloc(state
, &state
->in_input_buffer
,
5277 tevent_req_oom(req
);
5278 return tevent_req_post(req
, ev
);
5281 buf
= state
->in_input_buffer
.data
;
5282 SSVAL(buf
, ofs
, smb2cli_prots
[i
].smb2_dialect
);
5286 buf
= state
->in_input_buffer
.data
;
5287 SSVAL(buf
, 22, dialect_count
);
5289 _save_should_sign
= smb2cli_tcon_is_signing_on(tcon
);
5290 smb2cli_tcon_should_sign(tcon
, true);
5291 subreq
= smb2cli_ioctl_send(state
, ev
, conn
,
5292 timeout_msec
, session
, tcon
,
5293 UINT64_MAX
, /* in_fid_persistent */
5294 UINT64_MAX
, /* in_fid_volatile */
5295 FSCTL_VALIDATE_NEGOTIATE_INFO
,
5296 0, /* in_max_input_length */
5297 &state
->in_input_buffer
,
5298 24, /* in_max_output_length */
5299 &state
->in_output_buffer
,
5300 SMB2_IOCTL_FLAG_IS_FSCTL
);
5301 smb2cli_tcon_should_sign(tcon
, _save_should_sign
);
5302 if (tevent_req_nomem(subreq
, req
)) {
5303 return tevent_req_post(req
, ev
);
5305 tevent_req_set_callback(subreq
,
5306 smb2cli_validate_negotiate_info_done
,
5312 static void smb2cli_validate_negotiate_info_done(struct tevent_req
*subreq
)
5314 struct tevent_req
*req
=
5315 tevent_req_callback_data(subreq
,
5317 struct smb2cli_validate_negotiate_info_state
*state
=
5318 tevent_req_data(req
,
5319 struct smb2cli_validate_negotiate_info_state
);
5322 uint32_t capabilities
;
5323 DATA_BLOB guid_blob
;
5324 struct GUID server_guid
;
5325 uint16_t security_mode
;
5328 status
= smb2cli_ioctl_recv(subreq
, state
,
5329 &state
->out_input_buffer
,
5330 &state
->out_output_buffer
);
5331 TALLOC_FREE(subreq
);
5332 if (NT_STATUS_EQUAL(status
, NT_STATUS_FILE_CLOSED
)) {
5334 * The response was signed, but not supported
5336 * Older Windows and Samba releases return
5337 * NT_STATUS_FILE_CLOSED.
5339 tevent_req_done(req
);
5342 if (NT_STATUS_EQUAL(status
, NT_STATUS_INVALID_DEVICE_REQUEST
)) {
5344 * The response was signed, but not supported
5346 * This is returned by the NTVFS based Samba 4.x file server
5349 tevent_req_done(req
);
5352 if (NT_STATUS_EQUAL(status
, NT_STATUS_FS_DRIVER_REQUIRED
)) {
5354 * The response was signed, but not supported
5356 * This is returned by the NTVFS based Samba 4.x file server
5359 tevent_req_done(req
);
5362 if (NT_STATUS_EQUAL(status
, NT_STATUS_NOT_SUPPORTED
)) {
5364 * The response was signed, but not supported
5366 * This might be returned by older Windows versions or by
5367 * NetApp SMB server implementations.
5371 * https://blogs.msdn.microsoft.com/openspecification/2012/06/28/smb3-secure-dialect-negotiation/
5374 tevent_req_done(req
);
5377 if (tevent_req_nterror(req
, status
)) {
5381 if (state
->out_output_buffer
.length
!= 24) {
5382 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
5386 buf
= state
->out_output_buffer
.data
;
5388 capabilities
= IVAL(buf
, 0);
5389 guid_blob
= data_blob_const(buf
+ 4, 16);
5390 status
= GUID_from_data_blob(&guid_blob
, &server_guid
);
5391 if (tevent_req_nterror(req
, status
)) {
5394 security_mode
= CVAL(buf
, 20);
5395 dialect
= SVAL(buf
, 22);
5397 if (capabilities
!= state
->conn
->smb2
.server
.capabilities
) {
5398 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5402 if (!GUID_equal(&server_guid
, &state
->conn
->smb2
.server
.guid
)) {
5403 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5407 if (security_mode
!= state
->conn
->smb2
.server
.security_mode
) {
5408 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5412 if (dialect
!= state
->dialect
) {
5413 tevent_req_nterror(req
, NT_STATUS_ACCESS_DENIED
);
5417 tevent_req_done(req
);
5420 NTSTATUS
smb2cli_validate_negotiate_info_recv(struct tevent_req
*req
)
5422 return tevent_req_simple_recv_ntstatus(req
);
5425 static int smbXcli_session_destructor(struct smbXcli_session
*session
)
5427 if (session
->conn
== NULL
) {
5431 DLIST_REMOVE(session
->conn
->sessions
, session
);
5435 struct smbXcli_session
*smbXcli_session_create(TALLOC_CTX
*mem_ctx
,
5436 struct smbXcli_conn
*conn
)
5438 struct smbXcli_session
*session
;
5440 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
5441 if (session
== NULL
) {
5444 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
5445 if (session
->smb2
== NULL
) {
5446 talloc_free(session
);
5449 talloc_set_destructor(session
, smbXcli_session_destructor
);
5451 DLIST_ADD_END(conn
->sessions
, session
);
5452 session
->conn
= conn
;
5454 memcpy(session
->smb2_channel
.preauth_sha512
,
5455 conn
->smb2
.preauth_sha512
,
5456 sizeof(session
->smb2_channel
.preauth_sha512
));
5461 struct smbXcli_session
*smbXcli_session_copy(TALLOC_CTX
*mem_ctx
,
5462 struct smbXcli_session
*src
)
5464 struct smbXcli_session
*session
;
5466 session
= talloc_zero(mem_ctx
, struct smbXcli_session
);
5467 if (session
== NULL
) {
5470 session
->smb2
= talloc_zero(session
, struct smb2cli_session
);
5471 if (session
->smb2
== NULL
) {
5472 talloc_free(session
);
5476 session
->conn
= src
->conn
;
5477 *session
->smb2
= *src
->smb2
;
5478 session
->smb2_channel
= src
->smb2_channel
;
5479 session
->disconnect_expired
= src
->disconnect_expired
;
5481 DLIST_ADD_END(src
->conn
->sessions
, session
);
5482 talloc_set_destructor(session
, smbXcli_session_destructor
);
5487 bool smbXcli_session_is_guest(struct smbXcli_session
*session
)
5489 if (session
== NULL
) {
5493 if (session
->conn
== NULL
) {
5497 if (session
->conn
->mandatory_signing
) {
5501 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
5502 if (session
->smb2
->session_flags
& SMB2_SESSION_FLAG_IS_GUEST
) {
5508 if (session
->smb1
.action
& SMB_SETUP_GUEST
) {
5515 bool smbXcli_session_is_authenticated(struct smbXcli_session
*session
)
5517 const DATA_BLOB
*application_key
;
5519 if (session
== NULL
) {
5523 if (session
->conn
== NULL
) {
5528 * If we have an application key we had a session key negotiated
5531 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
5532 application_key
= &session
->smb2
->application_key
;
5534 application_key
= &session
->smb1
.application_key
;
5537 if (application_key
->length
== 0) {
5544 NTSTATUS
smbXcli_session_application_key(struct smbXcli_session
*session
,
5545 TALLOC_CTX
*mem_ctx
,
5548 const DATA_BLOB
*application_key
;
5550 *key
= data_blob_null
;
5552 if (session
->conn
== NULL
) {
5553 return NT_STATUS_NO_USER_SESSION_KEY
;
5556 if (session
->conn
->protocol
>= PROTOCOL_SMB2_02
) {
5557 application_key
= &session
->smb2
->application_key
;
5559 application_key
= &session
->smb1
.application_key
;
5562 if (application_key
->length
== 0) {
5563 return NT_STATUS_NO_USER_SESSION_KEY
;
5566 *key
= data_blob_dup_talloc(mem_ctx
, *application_key
);
5567 if (key
->data
== NULL
) {
5568 return NT_STATUS_NO_MEMORY
;
5571 return NT_STATUS_OK
;
5574 void smbXcli_session_set_disconnect_expired(struct smbXcli_session
*session
)
5576 session
->disconnect_expired
= true;
5579 uint16_t smb1cli_session_current_id(struct smbXcli_session
*session
)
5581 return session
->smb1
.session_id
;
5584 void smb1cli_session_set_id(struct smbXcli_session
*session
,
5585 uint16_t session_id
)
5587 session
->smb1
.session_id
= session_id
;
5590 void smb1cli_session_set_action(struct smbXcli_session
*session
,
5593 session
->smb1
.action
= action
;
5596 NTSTATUS
smb1cli_session_set_session_key(struct smbXcli_session
*session
,
5597 const DATA_BLOB _session_key
)
5599 struct smbXcli_conn
*conn
= session
->conn
;
5600 uint8_t session_key
[16];
5603 return NT_STATUS_INVALID_PARAMETER_MIX
;
5606 if (session
->smb1
.application_key
.length
!= 0) {
5608 * TODO: do not allow this...
5610 * return NT_STATUS_INVALID_PARAMETER_MIX;
5612 data_blob_clear_free(&session
->smb1
.application_key
);
5613 session
->smb1
.protected_key
= false;
5616 if (_session_key
.length
== 0) {
5617 return NT_STATUS_OK
;
5620 ZERO_STRUCT(session_key
);
5621 memcpy(session_key
, _session_key
.data
,
5622 MIN(_session_key
.length
, sizeof(session_key
)));
5624 session
->smb1
.application_key
= data_blob_talloc(session
,
5626 sizeof(session_key
));
5627 ZERO_STRUCT(session_key
);
5628 if (session
->smb1
.application_key
.data
== NULL
) {
5629 return NT_STATUS_NO_MEMORY
;
5632 session
->smb1
.protected_key
= false;
5634 return NT_STATUS_OK
;
5637 NTSTATUS
smb1cli_session_protect_session_key(struct smbXcli_session
*session
)
5639 if (session
->smb1
.protected_key
) {
5640 /* already protected */
5641 return NT_STATUS_OK
;
5644 if (session
->smb1
.application_key
.length
!= 16) {
5645 return NT_STATUS_INVALID_PARAMETER_MIX
;
5648 smb_key_derivation(session
->smb1
.application_key
.data
,
5649 session
->smb1
.application_key
.length
,
5650 session
->smb1
.application_key
.data
);
5652 session
->smb1
.protected_key
= true;
5654 return NT_STATUS_OK
;
5657 uint8_t smb2cli_session_security_mode(struct smbXcli_session
*session
)
5659 struct smbXcli_conn
*conn
= session
->conn
;
5660 uint8_t security_mode
= 0;
5663 return security_mode
;
5666 security_mode
= SMB2_NEGOTIATE_SIGNING_ENABLED
;
5667 if (conn
->mandatory_signing
) {
5668 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
5670 if (session
->smb2
->should_sign
) {
5671 security_mode
|= SMB2_NEGOTIATE_SIGNING_REQUIRED
;
5674 return security_mode
;
5677 uint64_t smb2cli_session_current_id(struct smbXcli_session
*session
)
5679 return session
->smb2
->session_id
;
5682 uint16_t smb2cli_session_get_flags(struct smbXcli_session
*session
)
5684 return session
->smb2
->session_flags
;
5687 void smb2cli_session_set_id_and_flags(struct smbXcli_session
*session
,
5688 uint64_t session_id
,
5689 uint16_t session_flags
)
5691 session
->smb2
->session_id
= session_id
;
5692 session
->smb2
->session_flags
= session_flags
;
5695 void smb2cli_session_increment_channel_sequence(struct smbXcli_session
*session
)
5697 session
->smb2
->channel_sequence
+= 1;
5700 uint16_t smb2cli_session_reset_channel_sequence(struct smbXcli_session
*session
,
5701 uint16_t channel_sequence
)
5705 prev_cs
= session
->smb2
->channel_sequence
;
5706 session
->smb2
->channel_sequence
= channel_sequence
;
5711 uint16_t smb2cli_session_current_channel_sequence(struct smbXcli_session
*session
)
5713 return session
->smb2
->channel_sequence
;
5716 void smb2cli_session_start_replay(struct smbXcli_session
*session
)
5718 session
->smb2
->replay_active
= true;
5721 void smb2cli_session_stop_replay(struct smbXcli_session
*session
)
5723 session
->smb2
->replay_active
= false;
5726 NTSTATUS
smb2cli_session_update_preauth(struct smbXcli_session
*session
,
5727 const struct iovec
*iov
)
5729 struct hc_sha512state sctx
;
5732 if (session
->conn
== NULL
) {
5733 return NT_STATUS_INTERNAL_ERROR
;
5736 if (session
->conn
->protocol
< PROTOCOL_SMB3_10
) {
5737 return NT_STATUS_OK
;
5740 if (session
->smb2_channel
.signing_key
.length
!= 0) {
5741 return NT_STATUS_OK
;
5744 samba_SHA512_Init(&sctx
);
5745 samba_SHA512_Update(&sctx
, session
->smb2_channel
.preauth_sha512
,
5746 sizeof(session
->smb2_channel
.preauth_sha512
));
5747 for (i
= 0; i
< 3; i
++) {
5748 samba_SHA512_Update(&sctx
, iov
[i
].iov_base
, iov
[i
].iov_len
);
5750 samba_SHA512_Final(session
->smb2_channel
.preauth_sha512
, &sctx
);
5752 return NT_STATUS_OK
;
5755 NTSTATUS
smb2cli_session_set_session_key(struct smbXcli_session
*session
,
5756 const DATA_BLOB _session_key
,
5757 const struct iovec
*recv_iov
)
5759 struct smbXcli_conn
*conn
= session
->conn
;
5760 uint16_t no_sign_flags
= 0;
5761 uint8_t session_key
[16];
5762 bool check_signature
= true;
5765 struct _derivation
{
5770 struct _derivation signing
;
5771 struct _derivation encryption
;
5772 struct _derivation decryption
;
5773 struct _derivation application
;
5775 size_t nonce_size
= 0;
5778 return NT_STATUS_INVALID_PARAMETER_MIX
;
5781 if (recv_iov
[0].iov_len
!= SMB2_HDR_BODY
) {
5782 return NT_STATUS_INVALID_PARAMETER_MIX
;
5785 if (!conn
->mandatory_signing
) {
5787 * only allow guest sessions without
5788 * mandatory signing.
5790 * If we try an authentication with username != ""
5791 * and the server let us in without verifying the
5792 * password we don't have a negotiated session key
5795 no_sign_flags
= SMB2_SESSION_FLAG_IS_GUEST
;
5798 if (session
->smb2
->session_flags
& no_sign_flags
) {
5799 session
->smb2
->should_sign
= false;
5800 return NT_STATUS_OK
;
5803 if (session
->smb2
->signing_key
.length
!= 0) {
5804 return NT_STATUS_INVALID_PARAMETER_MIX
;
5807 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
5808 struct _derivation
*d
;
5811 p
= data_blob_const(session
->smb2_channel
.preauth_sha512
,
5812 sizeof(session
->smb2_channel
.preauth_sha512
));
5814 d
= &derivation
.signing
;
5815 d
->label
= data_blob_string_const_null("SMBSigningKey");
5818 d
= &derivation
.encryption
;
5819 d
->label
= data_blob_string_const_null("SMBC2SCipherKey");
5822 d
= &derivation
.decryption
;
5823 d
->label
= data_blob_string_const_null("SMBS2CCipherKey");
5826 d
= &derivation
.application
;
5827 d
->label
= data_blob_string_const_null("SMBAppKey");
5830 } else if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5831 struct _derivation
*d
;
5833 d
= &derivation
.signing
;
5834 d
->label
= data_blob_string_const_null("SMB2AESCMAC");
5835 d
->context
= data_blob_string_const_null("SmbSign");
5837 d
= &derivation
.encryption
;
5838 d
->label
= data_blob_string_const_null("SMB2AESCCM");
5839 d
->context
= data_blob_string_const_null("ServerIn ");
5841 d
= &derivation
.decryption
;
5842 d
->label
= data_blob_string_const_null("SMB2AESCCM");
5843 d
->context
= data_blob_string_const_null("ServerOut");
5845 d
= &derivation
.application
;
5846 d
->label
= data_blob_string_const_null("SMB2APP");
5847 d
->context
= data_blob_string_const_null("SmbRpc");
5850 ZERO_STRUCT(session_key
);
5851 memcpy(session_key
, _session_key
.data
,
5852 MIN(_session_key
.length
, sizeof(session_key
)));
5854 session
->smb2
->signing_key
= data_blob_talloc(session
,
5856 sizeof(session_key
));
5857 if (session
->smb2
->signing_key
.data
== NULL
) {
5858 ZERO_STRUCT(session_key
);
5859 return NT_STATUS_NO_MEMORY
;
5862 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5863 struct _derivation
*d
= &derivation
.signing
;
5865 smb2_key_derivation(session_key
, sizeof(session_key
),
5866 d
->label
.data
, d
->label
.length
,
5867 d
->context
.data
, d
->context
.length
,
5868 session
->smb2
->signing_key
.data
);
5871 session
->smb2
->encryption_key
= data_blob_dup_talloc(session
,
5872 session
->smb2
->signing_key
);
5873 if (session
->smb2
->encryption_key
.data
== NULL
) {
5874 ZERO_STRUCT(session_key
);
5875 return NT_STATUS_NO_MEMORY
;
5878 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5879 struct _derivation
*d
= &derivation
.encryption
;
5881 smb2_key_derivation(session_key
, sizeof(session_key
),
5882 d
->label
.data
, d
->label
.length
,
5883 d
->context
.data
, d
->context
.length
,
5884 session
->smb2
->encryption_key
.data
);
5887 session
->smb2
->decryption_key
= data_blob_dup_talloc(session
,
5888 session
->smb2
->signing_key
);
5889 if (session
->smb2
->decryption_key
.data
== NULL
) {
5890 ZERO_STRUCT(session_key
);
5891 return NT_STATUS_NO_MEMORY
;
5894 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5895 struct _derivation
*d
= &derivation
.decryption
;
5897 smb2_key_derivation(session_key
, sizeof(session_key
),
5898 d
->label
.data
, d
->label
.length
,
5899 d
->context
.data
, d
->context
.length
,
5900 session
->smb2
->decryption_key
.data
);
5903 session
->smb2
->application_key
= data_blob_dup_talloc(session
,
5904 session
->smb2
->signing_key
);
5905 if (session
->smb2
->application_key
.data
== NULL
) {
5906 ZERO_STRUCT(session_key
);
5907 return NT_STATUS_NO_MEMORY
;
5910 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
5911 struct _derivation
*d
= &derivation
.application
;
5913 smb2_key_derivation(session_key
, sizeof(session_key
),
5914 d
->label
.data
, d
->label
.length
,
5915 d
->context
.data
, d
->context
.length
,
5916 session
->smb2
->application_key
.data
);
5918 ZERO_STRUCT(session_key
);
5920 session
->smb2_channel
.signing_key
= data_blob_dup_talloc(session
,
5921 session
->smb2
->signing_key
);
5922 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
5923 return NT_STATUS_NO_MEMORY
;
5926 check_signature
= conn
->mandatory_signing
;
5928 hdr_flags
= IVAL(recv_iov
[0].iov_base
, SMB2_HDR_FLAGS
);
5929 if (hdr_flags
& SMB2_HDR_FLAG_SIGNED
) {
5931 * Sadly some vendors don't sign the
5932 * final SMB2 session setup response
5934 * At least Windows and Samba are always doing this
5935 * if there's a session key available.
5937 * We only check the signature if it's mandatory
5938 * or SMB2_HDR_FLAG_SIGNED is provided.
5940 check_signature
= true;
5943 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
5944 check_signature
= true;
5947 if (check_signature
) {
5948 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
5949 session
->conn
->protocol
,
5951 if (!NT_STATUS_IS_OK(status
)) {
5956 session
->smb2
->should_sign
= false;
5957 session
->smb2
->should_encrypt
= false;
5959 if (conn
->desire_signing
) {
5960 session
->smb2
->should_sign
= true;
5963 if (conn
->smb2
.server
.security_mode
& SMB2_NEGOTIATE_SIGNING_REQUIRED
) {
5964 session
->smb2
->should_sign
= true;
5967 if (session
->smb2
->session_flags
& SMB2_SESSION_FLAG_ENCRYPT_DATA
) {
5968 session
->smb2
->should_encrypt
= true;
5971 if (conn
->protocol
< PROTOCOL_SMB2_24
) {
5972 session
->smb2
->should_encrypt
= false;
5975 if (conn
->smb2
.server
.cipher
== 0) {
5976 session
->smb2
->should_encrypt
= false;
5980 * CCM and GCM algorithms must never have their
5981 * nonce wrap, or the security of the whole
5982 * communication and the keys is destroyed.
5983 * We must drop the connection once we have
5984 * transfered too much data.
5986 * NOTE: We assume nonces greater than 8 bytes.
5988 generate_random_buffer((uint8_t *)&session
->smb2
->nonce_high_random
,
5989 sizeof(session
->smb2
->nonce_high_random
));
5990 switch (conn
->smb2
.server
.cipher
) {
5991 case SMB2_ENCRYPTION_AES128_CCM
:
5992 nonce_size
= AES_CCM_128_NONCE_SIZE
;
5994 case SMB2_ENCRYPTION_AES128_GCM
:
5995 nonce_size
= AES_GCM_128_IV_SIZE
;
6001 session
->smb2
->nonce_high_max
= SMB2_NONCE_HIGH_MAX(nonce_size
);
6002 session
->smb2
->nonce_high
= 0;
6003 session
->smb2
->nonce_low
= 0;
6005 return NT_STATUS_OK
;
6008 NTSTATUS
smb2cli_session_create_channel(TALLOC_CTX
*mem_ctx
,
6009 struct smbXcli_session
*session1
,
6010 struct smbXcli_conn
*conn
,
6011 struct smbXcli_session
**_session2
)
6013 struct smbXcli_session
*session2
;
6015 if (session1
->smb2
->signing_key
.length
== 0) {
6016 return NT_STATUS_INVALID_PARAMETER_MIX
;
6020 return NT_STATUS_INVALID_PARAMETER_MIX
;
6023 session2
= talloc_zero(mem_ctx
, struct smbXcli_session
);
6024 if (session2
== NULL
) {
6025 return NT_STATUS_NO_MEMORY
;
6027 session2
->smb2
= talloc_reference(session2
, session1
->smb2
);
6028 if (session2
->smb2
== NULL
) {
6029 talloc_free(session2
);
6030 return NT_STATUS_NO_MEMORY
;
6033 talloc_set_destructor(session2
, smbXcli_session_destructor
);
6034 DLIST_ADD_END(conn
->sessions
, session2
);
6035 session2
->conn
= conn
;
6037 memcpy(session2
->smb2_channel
.preauth_sha512
,
6038 conn
->smb2
.preauth_sha512
,
6039 sizeof(session2
->smb2_channel
.preauth_sha512
));
6041 *_session2
= session2
;
6042 return NT_STATUS_OK
;
6045 NTSTATUS
smb2cli_session_set_channel_key(struct smbXcli_session
*session
,
6046 const DATA_BLOB _channel_key
,
6047 const struct iovec
*recv_iov
)
6049 struct smbXcli_conn
*conn
= session
->conn
;
6050 uint8_t channel_key
[16];
6052 struct _derivation
{
6057 struct _derivation signing
;
6061 return NT_STATUS_INVALID_PARAMETER_MIX
;
6064 if (session
->smb2_channel
.signing_key
.length
!= 0) {
6065 return NT_STATUS_INVALID_PARAMETER_MIX
;
6068 if (conn
->protocol
>= PROTOCOL_SMB3_10
) {
6069 struct _derivation
*d
;
6072 p
= data_blob_const(session
->smb2_channel
.preauth_sha512
,
6073 sizeof(session
->smb2_channel
.preauth_sha512
));
6075 d
= &derivation
.signing
;
6076 d
->label
= data_blob_string_const_null("SMBSigningKey");
6078 } else if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
6079 struct _derivation
*d
;
6081 d
= &derivation
.signing
;
6082 d
->label
= data_blob_string_const_null("SMB2AESCMAC");
6083 d
->context
= data_blob_string_const_null("SmbSign");
6086 ZERO_STRUCT(channel_key
);
6087 memcpy(channel_key
, _channel_key
.data
,
6088 MIN(_channel_key
.length
, sizeof(channel_key
)));
6090 session
->smb2_channel
.signing_key
= data_blob_talloc(session
,
6092 sizeof(channel_key
));
6093 if (session
->smb2_channel
.signing_key
.data
== NULL
) {
6094 ZERO_STRUCT(channel_key
);
6095 return NT_STATUS_NO_MEMORY
;
6098 if (conn
->protocol
>= PROTOCOL_SMB2_24
) {
6099 struct _derivation
*d
= &derivation
.signing
;
6101 smb2_key_derivation(channel_key
, sizeof(channel_key
),
6102 d
->label
.data
, d
->label
.length
,
6103 d
->context
.data
, d
->context
.length
,
6104 session
->smb2_channel
.signing_key
.data
);
6106 ZERO_STRUCT(channel_key
);
6108 status
= smb2_signing_check_pdu(session
->smb2_channel
.signing_key
,
6109 session
->conn
->protocol
,
6111 if (!NT_STATUS_IS_OK(status
)) {
6115 return NT_STATUS_OK
;
6118 NTSTATUS
smb2cli_session_encryption_on(struct smbXcli_session
*session
)
6120 if (!session
->smb2
->should_sign
) {
6122 * We need required signing on the session
6123 * in order to prevent man in the middle attacks.
6125 return NT_STATUS_INVALID_PARAMETER_MIX
;
6128 if (session
->smb2
->should_encrypt
) {
6129 return NT_STATUS_OK
;
6132 if (session
->conn
->protocol
< PROTOCOL_SMB2_24
) {
6133 return NT_STATUS_NOT_SUPPORTED
;
6136 if (session
->conn
->smb2
.server
.cipher
== 0) {
6137 return NT_STATUS_NOT_SUPPORTED
;
6140 if (session
->smb2
->signing_key
.data
== NULL
) {
6141 return NT_STATUS_NOT_SUPPORTED
;
6143 session
->smb2
->should_encrypt
= true;
6144 return NT_STATUS_OK
;
6147 struct smbXcli_tcon
*smbXcli_tcon_create(TALLOC_CTX
*mem_ctx
)
6149 struct smbXcli_tcon
*tcon
;
6151 tcon
= talloc_zero(mem_ctx
, struct smbXcli_tcon
);
6160 * Return a deep structure copy of a struct smbXcli_tcon *
6163 struct smbXcli_tcon
*smbXcli_tcon_copy(TALLOC_CTX
*mem_ctx
,
6164 const struct smbXcli_tcon
*tcon_in
)
6166 struct smbXcli_tcon
*tcon
;
6168 tcon
= talloc_memdup(mem_ctx
, tcon_in
, sizeof(struct smbXcli_tcon
));
6173 /* Deal with the SMB1 strings. */
6174 if (tcon_in
->smb1
.service
!= NULL
) {
6175 tcon
->smb1
.service
= talloc_strdup(tcon
, tcon_in
->smb1
.service
);
6176 if (tcon
->smb1
.service
== NULL
) {
6181 if (tcon
->smb1
.fs_type
!= NULL
) {
6182 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, tcon_in
->smb1
.fs_type
);
6183 if (tcon
->smb1
.fs_type
== NULL
) {
6191 void smbXcli_tcon_set_fs_attributes(struct smbXcli_tcon
*tcon
,
6192 uint32_t fs_attributes
)
6194 tcon
->fs_attributes
= fs_attributes
;
6197 uint32_t smbXcli_tcon_get_fs_attributes(struct smbXcli_tcon
*tcon
)
6199 return tcon
->fs_attributes
;
6202 bool smbXcli_tcon_is_dfs_share(struct smbXcli_tcon
*tcon
)
6208 if (tcon
->is_smb1
) {
6209 if (tcon
->smb1
.optional_support
& SMB_SHARE_IN_DFS
) {
6216 if (tcon
->smb2
.capabilities
& SMB2_SHARE_CAP_DFS
) {
6223 uint16_t smb1cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
6225 return tcon
->smb1
.tcon_id
;
6228 void smb1cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint16_t tcon_id
)
6230 tcon
->is_smb1
= true;
6231 tcon
->smb1
.tcon_id
= tcon_id
;
6234 bool smb1cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
6236 uint16_t optional_support
,
6237 uint32_t maximal_access
,
6238 uint32_t guest_maximal_access
,
6239 const char *service
,
6240 const char *fs_type
)
6242 tcon
->is_smb1
= true;
6243 tcon
->fs_attributes
= 0;
6244 tcon
->smb1
.tcon_id
= tcon_id
;
6245 tcon
->smb1
.optional_support
= optional_support
;
6246 tcon
->smb1
.maximal_access
= maximal_access
;
6247 tcon
->smb1
.guest_maximal_access
= guest_maximal_access
;
6249 TALLOC_FREE(tcon
->smb1
.service
);
6250 tcon
->smb1
.service
= talloc_strdup(tcon
, service
);
6251 if (service
!= NULL
&& tcon
->smb1
.service
== NULL
) {
6255 TALLOC_FREE(tcon
->smb1
.fs_type
);
6256 tcon
->smb1
.fs_type
= talloc_strdup(tcon
, fs_type
);
6257 if (fs_type
!= NULL
&& tcon
->smb1
.fs_type
== NULL
) {
6264 uint32_t smb2cli_tcon_current_id(struct smbXcli_tcon
*tcon
)
6266 return tcon
->smb2
.tcon_id
;
6269 void smb2cli_tcon_set_id(struct smbXcli_tcon
*tcon
, uint32_t tcon_id
)
6271 tcon
->smb2
.tcon_id
= tcon_id
;
6274 uint32_t smb2cli_tcon_capabilities(struct smbXcli_tcon
*tcon
)
6276 return tcon
->smb2
.capabilities
;
6279 uint32_t smb2cli_tcon_flags(struct smbXcli_tcon
*tcon
)
6281 return tcon
->smb2
.flags
;
6284 void smb2cli_tcon_set_values(struct smbXcli_tcon
*tcon
,
6285 struct smbXcli_session
*session
,
6289 uint32_t capabilities
,
6290 uint32_t maximal_access
)
6292 tcon
->is_smb1
= false;
6293 tcon
->fs_attributes
= 0;
6294 tcon
->smb2
.tcon_id
= tcon_id
;
6295 tcon
->smb2
.type
= type
;
6296 tcon
->smb2
.flags
= flags
;
6297 tcon
->smb2
.capabilities
= capabilities
;
6298 tcon
->smb2
.maximal_access
= maximal_access
;
6300 tcon
->smb2
.should_sign
= false;
6301 tcon
->smb2
.should_encrypt
= false;
6303 if (session
== NULL
) {
6307 tcon
->smb2
.should_sign
= session
->smb2
->should_sign
;
6308 tcon
->smb2
.should_encrypt
= session
->smb2
->should_encrypt
;
6310 if (flags
& SMB2_SHAREFLAG_ENCRYPT_DATA
) {
6311 tcon
->smb2
.should_encrypt
= true;
6315 void smb2cli_tcon_should_sign(struct smbXcli_tcon
*tcon
,
6318 tcon
->smb2
.should_sign
= should_sign
;
6321 bool smb2cli_tcon_is_signing_on(struct smbXcli_tcon
*tcon
)
6323 if (tcon
->smb2
.should_encrypt
) {
6327 return tcon
->smb2
.should_sign
;
6330 void smb2cli_tcon_should_encrypt(struct smbXcli_tcon
*tcon
,
6331 bool should_encrypt
)
6333 tcon
->smb2
.should_encrypt
= should_encrypt
;
6336 bool smb2cli_tcon_is_encryption_on(struct smbXcli_tcon
*tcon
)
6338 return tcon
->smb2
.should_encrypt
;
6341 void smb2cli_conn_set_mid(struct smbXcli_conn
*conn
, uint64_t mid
)
6343 conn
->smb2
.mid
= mid
;
6346 uint64_t smb2cli_conn_get_mid(struct smbXcli_conn
*conn
)
6348 return conn
->smb2
.mid
;