2 Unix SMB/CIFS implementation.
3 SMB client generic functions
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Jeremy Allison 2007.
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 "smb_signing.h"
23 #include "async_smb.h"
25 /*******************************************************************
26 Setup the word count and byte count for a client smb message.
27 ********************************************************************/
29 int cli_set_message(char *buf
,int num_words
,int num_bytes
,bool zero
)
31 if (zero
&& (num_words
|| num_bytes
)) {
32 memset(buf
+ smb_size
,'\0',num_words
*2 + num_bytes
);
34 SCVAL(buf
,smb_wct
,num_words
);
35 SSVAL(buf
,smb_vwv
+ num_words
*SIZEOFWORD
,num_bytes
);
36 smb_setlen(buf
,smb_size
+ num_words
*2 + num_bytes
- 4);
37 return (smb_size
+ num_words
*2 + num_bytes
);
40 /****************************************************************************
41 Change the timeout (in milliseconds).
42 ****************************************************************************/
44 unsigned int cli_set_timeout(struct cli_state
*cli
, unsigned int timeout
)
46 unsigned int old_timeout
= cli
->timeout
;
47 cli
->timeout
= timeout
;
51 /****************************************************************************
52 Change the port number used to call on.
53 ****************************************************************************/
55 void cli_set_port(struct cli_state
*cli
, int port
)
60 /****************************************************************************
61 convenience routine to find if we negotiated ucs2
62 ****************************************************************************/
64 bool cli_ucs2(struct cli_state
*cli
)
66 return ((cli
->capabilities
& CAP_UNICODE
) != 0);
70 /****************************************************************************
71 Read an smb from a fd ignoring all keepalive packets.
72 The timeout is in milliseconds
74 This is exactly the same as receive_smb except that it never returns
75 a session keepalive packet (just as receive_smb used to do).
76 receive_smb was changed to return keepalives as the oplock processing means this call
77 should never go into a blocking read.
78 ****************************************************************************/
80 static ssize_t
client_receive_smb(struct cli_state
*cli
, size_t maxlen
)
87 set_smb_read_error(&cli
->smb_rw_error
, SMB_READ_OK
);
89 status
= receive_smb_raw(cli
->fd
, cli
->inbuf
, cli
->bufsize
,
90 cli
->timeout
, maxlen
, &len
);
91 if (!NT_STATUS_IS_OK(status
)) {
92 DEBUG(10,("client_receive_smb failed\n"));
95 if (NT_STATUS_EQUAL(status
, NT_STATUS_END_OF_FILE
)) {
96 set_smb_read_error(&cli
->smb_rw_error
,
101 if (NT_STATUS_EQUAL(status
, NT_STATUS_IO_TIMEOUT
)) {
102 set_smb_read_error(&cli
->smb_rw_error
,
107 set_smb_read_error(&cli
->smb_rw_error
, SMB_READ_ERROR
);
112 * I don't believe len can be < 0 with NT_STATUS_OK
113 * returned above, but this check doesn't hurt. JRA.
116 if ((ssize_t
)len
< 0) {
120 /* Ignore session keepalive packets. */
121 if(CVAL(cli
->inbuf
,0) != SMBkeepalive
) {
126 if (cli_encryption_on(cli
)) {
127 NTSTATUS status
= cli_decrypt_message(cli
);
128 if (!NT_STATUS_IS_OK(status
)) {
129 DEBUG(0, ("SMB decryption failed on incoming packet! Error %s\n",
131 cli
->smb_rw_error
= SMB_READ_BAD_DECRYPT
;
136 show_msg(cli
->inbuf
);
140 static bool cli_state_set_seqnum(struct cli_state
*cli
, uint16_t mid
, uint32_t seqnum
)
142 struct cli_state_seqnum
*c
;
144 for (c
= cli
->seqnum
; c
; c
= c
->next
) {
151 c
= talloc_zero(cli
, struct cli_state_seqnum
);
158 c
->persistent
= false;
159 DLIST_ADD_END(cli
->seqnum
, c
, struct cli_state_seqnum
*);
164 bool cli_state_seqnum_persistent(struct cli_state
*cli
,
167 struct cli_state_seqnum
*c
;
169 for (c
= cli
->seqnum
; c
; c
= c
->next
) {
171 c
->persistent
= true;
179 bool cli_state_seqnum_remove(struct cli_state
*cli
,
182 struct cli_state_seqnum
*c
;
184 for (c
= cli
->seqnum
; c
; c
= c
->next
) {
186 DLIST_REMOVE(cli
->seqnum
, c
);
195 static uint32_t cli_state_get_seqnum(struct cli_state
*cli
, uint16_t mid
)
197 struct cli_state_seqnum
*c
;
199 for (c
= cli
->seqnum
; c
; c
= c
->next
) {
201 uint32_t seqnum
= c
->seqnum
;
202 if (!c
->persistent
) {
203 DLIST_REMOVE(cli
->seqnum
, c
);
213 /****************************************************************************
215 ****************************************************************************/
217 bool cli_receive_smb(struct cli_state
*cli
)
223 /* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
228 len
= client_receive_smb(cli
, 0);
231 /* it might be an oplock break request */
232 if (!(CVAL(cli
->inbuf
, smb_flg
) & FLAG_REPLY
) &&
233 CVAL(cli
->inbuf
,smb_com
) == SMBlockingX
&&
234 SVAL(cli
->inbuf
,smb_vwv6
) == 0 &&
235 SVAL(cli
->inbuf
,smb_vwv7
) == 0) {
236 if (cli
->oplock_handler
) {
237 int fnum
= SVAL(cli
->inbuf
,smb_vwv2
);
238 unsigned char level
= CVAL(cli
->inbuf
,smb_vwv3
+1);
239 if (!NT_STATUS_IS_OK(cli
->oplock_handler(cli
, fnum
, level
))) {
243 /* try to prevent loops */
244 SCVAL(cli
->inbuf
,smb_com
,0xFF);
249 /* If the server is not responding, note that now */
251 char addr
[INET6_ADDRSTRLEN
];
253 print_sockaddr(addr
, sizeof(addr
), &cli
->dest_ss
);
254 DEBUG(0, ("Receiving SMB: Server %s stopped responding\n",
261 mid
= SVAL(cli
->inbuf
,smb_mid
);
262 seqnum
= cli_state_get_seqnum(cli
, mid
);
264 if (!cli_check_sign_mac(cli
, cli
->inbuf
, seqnum
+1)) {
266 * If we get a signature failure in sessionsetup, then
267 * the server sometimes just reflects the sent signature
268 * back to us. Detect this and allow the upper layer to
269 * retrieve the correct Windows error message.
271 if (CVAL(cli
->outbuf
,smb_com
) == SMBsesssetupX
&&
272 (smb_len(cli
->inbuf
) > (smb_ss_field
+ 8 - 4)) &&
273 (SVAL(cli
->inbuf
,smb_flg2
) & FLAGS2_SMB_SECURITY_SIGNATURES
) &&
274 memcmp(&cli
->outbuf
[smb_ss_field
],&cli
->inbuf
[smb_ss_field
],8) == 0 &&
278 * Reflected signature on login error.
279 * Set bad sig but don't close fd.
281 cli
->smb_rw_error
= SMB_READ_BAD_SIG
;
285 DEBUG(0, ("SMB Signature verification failed on incoming packet!\n"));
286 cli
->smb_rw_error
= SMB_READ_BAD_SIG
;
294 static ssize_t
write_socket(int fd
, const char *buf
, size_t len
)
298 DEBUG(6,("write_socket(%d,%d)\n",fd
,(int)len
));
299 ret
= write_data(fd
,buf
,len
);
301 DEBUG(6,("write_socket(%d,%d) wrote %d\n",fd
,(int)len
,(int)ret
));
303 DEBUG(0,("write_socket: Error writing %d bytes to socket %d: ERRNO = %s\n",
304 (int)len
, fd
, strerror(errno
) ));
309 /****************************************************************************
311 ****************************************************************************/
313 bool cli_send_smb(struct cli_state
*cli
)
318 char *buf_out
= cli
->outbuf
;
319 bool enc_on
= cli_encryption_on(cli
);
322 /* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
326 cli_calculate_sign_mac(cli
, cli
->outbuf
, &seqnum
);
328 if (!cli_state_set_seqnum(cli
, cli
->mid
, seqnum
)) {
329 DEBUG(0,("Failed to store mid[%u]/seqnum[%u]\n",
330 (unsigned int)cli
->mid
,
331 (unsigned int)seqnum
));
336 NTSTATUS status
= cli_encrypt_message(cli
, cli
->outbuf
,
338 if (!NT_STATUS_IS_OK(status
)) {
341 cli
->smb_rw_error
= SMB_WRITE_ERROR
;
342 DEBUG(0,("Error in encrypting client message. Error %s\n",
343 nt_errstr(status
) ));
348 len
= smb_len(buf_out
) + 4;
350 while (nwritten
< len
) {
351 ret
= write_socket(cli
->fd
,buf_out
+nwritten
,len
- nwritten
);
354 cli_free_enc_buffer(cli
, buf_out
);
358 cli
->smb_rw_error
= SMB_WRITE_ERROR
;
359 DEBUG(0,("Error writing %d bytes to client. %d (%s)\n",
360 (int)len
,(int)ret
, strerror(errno
) ));
367 cli_free_enc_buffer(cli
, buf_out
);
370 /* Increment the mid so we can tell between responses. */
377 /****************************************************************************
378 Send a "direct" writeX smb to a fd.
379 ****************************************************************************/
381 bool cli_send_smb_direct_writeX(struct cli_state
*cli
,
385 /* First length to send is the offset to the data. */
386 size_t len
= SVAL(cli
->outbuf
,smb_vwv11
) + 4;
390 /* fd == -1 causes segfaults -- Tom (tom@ninja.nl) */
395 if (client_is_signing_on(cli
)) {
396 DEBUG(0,("cli_send_smb_large: cannot send signed packet.\n"));
400 iov
[0].iov_base
= (void *)cli
->outbuf
;
401 iov
[0].iov_len
= len
;
402 iov
[1].iov_base
= CONST_DISCARD(void *, p
);
403 iov
[1].iov_len
= extradata
;
405 nwritten
= write_data_iov(cli
->fd
, iov
, 2);
406 if (nwritten
< (len
+ extradata
)) {
409 cli
->smb_rw_error
= SMB_WRITE_ERROR
;
410 DEBUG(0,("Error writing %d bytes to client. (%s)\n",
411 (int)(len
+extradata
), strerror(errno
)));
415 /* Increment the mid so we can tell between responses. */
422 /****************************************************************************
423 Setup basics in a outgoing packet.
424 ****************************************************************************/
426 void cli_setup_packet_buf(struct cli_state
*cli
, char *buf
)
430 SIVAL(buf
,smb_rcls
,0);
431 SSVAL(buf
,smb_pid
,cli
->pid
);
432 memset(buf
+smb_pidhigh
, 0, 12);
433 SSVAL(buf
,smb_uid
,cli
->vuid
);
434 SSVAL(buf
,smb_mid
,cli
->mid
);
436 if (cli
->protocol
<= PROTOCOL_CORE
) {
440 if (cli
->case_sensitive
) {
441 SCVAL(buf
,smb_flg
,0x0);
443 /* Default setting, case insensitive. */
444 SCVAL(buf
,smb_flg
,0x8);
446 flags2
= FLAGS2_LONG_PATH_COMPONENTS
;
447 if (cli
->capabilities
& CAP_UNICODE
)
448 flags2
|= FLAGS2_UNICODE_STRINGS
;
449 if ((cli
->capabilities
& CAP_DFS
) && cli
->dfsroot
)
450 flags2
|= FLAGS2_DFS_PATHNAMES
;
451 if (cli
->capabilities
& CAP_STATUS32
)
452 flags2
|= FLAGS2_32_BIT_ERROR_CODES
;
454 flags2
|= FLAGS2_EXTENDED_SECURITY
;
455 SSVAL(buf
,smb_flg2
, flags2
);
458 void cli_setup_packet(struct cli_state
*cli
)
460 cli_setup_packet_buf(cli
, cli
->outbuf
);
463 /****************************************************************************
464 Setup the bcc length of the packet from a pointer to the end of the data.
465 ****************************************************************************/
467 void cli_setup_bcc(struct cli_state
*cli
, void *p
)
469 set_message_bcc(cli
->outbuf
, PTR_DIFF(p
, smb_buf(cli
->outbuf
)));
472 /****************************************************************************
473 Initialize Domain, user or password.
474 ****************************************************************************/
476 NTSTATUS
cli_set_domain(struct cli_state
*cli
, const char *domain
)
478 TALLOC_FREE(cli
->domain
);
479 cli
->domain
= talloc_strdup(cli
, domain
? domain
: "");
480 if (cli
->domain
== NULL
) {
481 return NT_STATUS_NO_MEMORY
;
486 NTSTATUS
cli_set_username(struct cli_state
*cli
, const char *username
)
488 TALLOC_FREE(cli
->user_name
);
489 cli
->user_name
= talloc_strdup(cli
, username
? username
: "");
490 if (cli
->user_name
== NULL
) {
491 return NT_STATUS_NO_MEMORY
;
496 NTSTATUS
cli_set_password(struct cli_state
*cli
, const char *password
)
498 TALLOC_FREE(cli
->password
);
500 /* Password can be NULL. */
502 cli
->password
= talloc_strdup(cli
, password
);
503 if (cli
->password
== NULL
) {
504 return NT_STATUS_NO_MEMORY
;
507 /* Use zero NTLMSSP hashes and session key. */
508 cli
->password
= NULL
;
514 /****************************************************************************
515 Initialise credentials of a client structure.
516 ****************************************************************************/
518 NTSTATUS
cli_init_creds(struct cli_state
*cli
, const char *username
, const char *domain
, const char *password
)
520 NTSTATUS status
= cli_set_username(cli
, username
);
521 if (!NT_STATUS_IS_OK(status
)) {
524 status
= cli_set_domain(cli
, domain
);
525 if (!NT_STATUS_IS_OK(status
)) {
528 DEBUG(10,("cli_init_creds: user %s domain %s\n", cli
->user_name
, cli
->domain
));
530 return cli_set_password(cli
, password
);
533 /****************************************************************************
534 Initialise a client structure. Always returns a talloc'ed struct.
535 Set the signing state (used from the command line).
536 ****************************************************************************/
538 struct cli_state
*cli_initialise_ex(int signing_state
)
540 struct cli_state
*cli
= NULL
;
541 bool allow_smb_signing
= false;
542 bool mandatory_signing
= false;
544 /* Check the effective uid - make sure we are not setuid */
545 if (is_setuid_root()) {
546 DEBUG(0,("libsmb based programs must *NOT* be setuid root.\n"));
550 cli
= TALLOC_ZERO_P(NULL
, struct cli_state
);
555 cli
->dfs_mountpoint
= talloc_strdup(cli
, "");
556 if (!cli
->dfs_mountpoint
) {
562 cli
->pid
= (uint16
)sys_getpid();
564 cli
->vuid
= UID_FIELD_INVALID
;
565 cli
->protocol
= PROTOCOL_NT1
;
566 cli
->timeout
= 20000; /* Timeout is in milliseconds. */
567 cli
->bufsize
= CLI_BUFFER_SIZE
+4;
568 cli
->max_xmit
= cli
->bufsize
;
569 cli
->outbuf
= (char *)SMB_MALLOC(cli
->bufsize
+SAFETY_MARGIN
);
571 cli
->inbuf
= (char *)SMB_MALLOC(cli
->bufsize
+SAFETY_MARGIN
);
572 cli
->oplock_handler
= cli_oplock_ack
;
573 cli
->case_sensitive
= false;
574 cli
->smb_rw_error
= SMB_READ_OK
;
576 cli
->use_spnego
= lp_client_use_spnego();
578 cli
->capabilities
= CAP_UNICODE
| CAP_STATUS32
| CAP_DFS
;
580 /* Set the CLI_FORCE_DOSERR environment variable to test
581 client routines using DOS errors instead of STATUS32
582 ones. This intended only as a temporary hack. */
583 if (getenv("CLI_FORCE_DOSERR"))
584 cli
->force_dos_errors
= true;
586 if (lp_client_signing()) {
587 allow_smb_signing
= true;
590 if (lp_client_signing() == Required
) {
591 mandatory_signing
= true;
594 if (signing_state
!= Undefined
) {
595 allow_smb_signing
= true;
598 if (signing_state
== false) {
599 allow_smb_signing
= false;
600 mandatory_signing
= false;
603 if (signing_state
== Required
) {
604 mandatory_signing
= true;
607 if (!cli
->outbuf
|| !cli
->inbuf
)
610 memset(cli
->outbuf
, 0, cli
->bufsize
);
611 memset(cli
->inbuf
, 0, cli
->bufsize
);
614 #if defined(DEVELOPER)
615 /* just because we over-allocate, doesn't mean it's right to use it */
616 clobber_region(FUNCTION_MACRO
, __LINE__
, cli
->outbuf
+cli
->bufsize
, SAFETY_MARGIN
);
617 clobber_region(FUNCTION_MACRO
, __LINE__
, cli
->inbuf
+cli
->bufsize
, SAFETY_MARGIN
);
620 /* initialise signing */
621 cli
->signing_state
= smb_signing_init(cli
,
624 if (!cli
->signing_state
) {
628 cli
->outgoing
= tevent_queue_create(cli
, "cli_outgoing");
629 if (cli
->outgoing
== NULL
) {
634 cli
->initialised
= 1;
638 /* Clean up after malloc() error */
642 SAFE_FREE(cli
->inbuf
);
643 SAFE_FREE(cli
->outbuf
);
648 struct cli_state
*cli_initialise(void)
650 return cli_initialise_ex(Undefined
);
653 /****************************************************************************
654 Close all pipes open on this session.
655 ****************************************************************************/
657 void cli_nt_pipes_close(struct cli_state
*cli
)
659 while (cli
->pipe_list
!= NULL
) {
661 * No TALLOC_FREE here!
663 talloc_free(cli
->pipe_list
);
667 /****************************************************************************
668 Shutdown a client structure.
669 ****************************************************************************/
671 static void _cli_shutdown(struct cli_state
*cli
)
673 cli_nt_pipes_close(cli
);
676 * tell our peer to free his resources. Wihtout this, when an
677 * application attempts to do a graceful shutdown and calls
678 * smbc_free_context() to clean up all connections, some connections
679 * can remain active on the peer end, until some (long) timeout period
680 * later. This tree disconnect forces the peer to clean up, since the
681 * connection will be going away.
683 * Also, do not do tree disconnect when cli->smb_rw_error is SMB_DO_NOT_DO_TDIS
684 * the only user for this so far is smbmount which passes opened connection
685 * down to kernel's smbfs module.
687 if ( (cli
->cnum
!= (uint16
)-1) && (cli
->smb_rw_error
!= SMB_DO_NOT_DO_TDIS
) ) {
691 SAFE_FREE(cli
->outbuf
);
692 SAFE_FREE(cli
->inbuf
);
694 data_blob_free(&cli
->secblob
);
695 data_blob_free(&cli
->user_session_key
);
701 cli
->smb_rw_error
= SMB_READ_OK
;
704 * Need to free pending first, they remove themselves
706 while (cli
->pending
) {
707 talloc_free(cli
->pending
[0]);
712 void cli_shutdown(struct cli_state
*cli
)
714 struct cli_state
*cli_head
;
718 DLIST_HEAD(cli
, cli_head
);
719 if (cli_head
== cli
) {
721 * head of a DFS list, shutdown all subsidiary DFS
724 struct cli_state
*p
, *next
;
726 for (p
= cli_head
->next
; p
; p
= next
) {
728 DLIST_REMOVE(cli_head
, p
);
732 DLIST_REMOVE(cli_head
, cli
);
738 /****************************************************************************
739 Set socket options on a open connection.
740 ****************************************************************************/
742 void cli_sockopt(struct cli_state
*cli
, const char *options
)
744 set_socket_options(cli
->fd
, options
);
747 /****************************************************************************
748 Set the PID to use for smb messages. Return the old pid.
749 ****************************************************************************/
751 uint16
cli_setpid(struct cli_state
*cli
, uint16 pid
)
753 uint16 ret
= cli
->pid
;
758 /****************************************************************************
759 Set the case sensitivity flag on the packets. Returns old state.
760 ****************************************************************************/
762 bool cli_set_case_sensitive(struct cli_state
*cli
, bool case_sensitive
)
764 bool ret
= cli
->case_sensitive
;
765 cli
->case_sensitive
= case_sensitive
;
769 struct cli_echo_state
{
775 static void cli_echo_done(struct tevent_req
*subreq
);
777 struct tevent_req
*cli_echo_send(TALLOC_CTX
*mem_ctx
, struct event_context
*ev
,
778 struct cli_state
*cli
, uint16_t num_echos
,
781 struct tevent_req
*req
, *subreq
;
782 struct cli_echo_state
*state
;
784 req
= tevent_req_create(mem_ctx
, &state
, struct cli_echo_state
);
788 SSVAL(state
->vwv
, 0, num_echos
);
790 state
->num_echos
= num_echos
;
792 subreq
= cli_smb_send(state
, ev
, cli
, SMBecho
, 0, 1, state
->vwv
,
793 data
.length
, data
.data
);
794 if (subreq
== NULL
) {
797 tevent_req_set_callback(subreq
, cli_echo_done
, req
);
804 static void cli_echo_done(struct tevent_req
*subreq
)
806 struct tevent_req
*req
= tevent_req_callback_data(
807 subreq
, struct tevent_req
);
808 struct cli_echo_state
*state
= tevent_req_data(
809 req
, struct cli_echo_state
);
815 status
= cli_smb_recv(subreq
, state
, &inbuf
, 0, NULL
, NULL
,
817 if (!NT_STATUS_IS_OK(status
)) {
818 tevent_req_nterror(req
, status
);
821 if ((num_bytes
!= state
->data
.length
)
822 || (memcmp(bytes
, state
->data
.data
, num_bytes
) != 0)) {
823 tevent_req_nterror(req
, NT_STATUS_INVALID_NETWORK_RESPONSE
);
827 state
->num_echos
-=1;
828 if (state
->num_echos
== 0) {
829 tevent_req_done(req
);
833 if (!cli_smb_req_set_pending(subreq
)) {
834 tevent_req_nterror(req
, NT_STATUS_NO_MEMORY
);
840 * Get the result out from an echo request
841 * @param[in] req The async_req from cli_echo_send
842 * @retval Did the server reply correctly?
845 NTSTATUS
cli_echo_recv(struct tevent_req
*req
)
847 return tevent_req_simple_recv_ntstatus(req
);
851 * @brief Send/Receive SMBEcho requests
852 * @param[in] mem_ctx The memory context to put the async_req on
853 * @param[in] ev The event context that will call us back
854 * @param[in] cli The connection to send the echo to
855 * @param[in] num_echos How many times do we want to get the reply?
856 * @param[in] data The data we want to get back
857 * @retval Did the server reply correctly?
860 NTSTATUS
cli_echo(struct cli_state
*cli
, uint16_t num_echos
, DATA_BLOB data
)
862 TALLOC_CTX
*frame
= talloc_stackframe();
863 struct event_context
*ev
;
864 struct tevent_req
*req
;
865 NTSTATUS status
= NT_STATUS_OK
;
867 if (cli_has_async_calls(cli
)) {
869 * Can't use sync call while an async call is in flight
871 status
= NT_STATUS_INVALID_PARAMETER
;
875 ev
= event_context_init(frame
);
877 status
= NT_STATUS_NO_MEMORY
;
881 req
= cli_echo_send(frame
, ev
, cli
, num_echos
, data
);
883 status
= NT_STATUS_NO_MEMORY
;
887 if (!tevent_req_poll(req
, ev
)) {
888 status
= map_nt_error_from_unix(errno
);
892 status
= cli_echo_recv(req
);
895 if (!NT_STATUS_IS_OK(status
)) {
896 cli_set_error(cli
, status
);
902 * Is the SMB command able to hold an AND_X successor
903 * @param[in] cmd The SMB command in question
904 * @retval Can we add a chained request after "cmd"?
906 bool is_andx_req(uint8_t cmd
)
926 NTSTATUS
cli_smb(TALLOC_CTX
*mem_ctx
, struct cli_state
*cli
,
927 uint8_t smb_command
, uint8_t additional_flags
,
928 uint8_t wct
, uint16_t *vwv
,
929 uint32_t num_bytes
, const uint8_t *bytes
,
930 struct tevent_req
**result_parent
,
931 uint8_t min_wct
, uint8_t *pwct
, uint16_t **pvwv
,
932 uint32_t *pnum_bytes
, uint8_t **pbytes
)
934 struct tevent_context
*ev
;
935 struct tevent_req
*req
= NULL
;
936 NTSTATUS status
= NT_STATUS_NO_MEMORY
;
938 if (cli_has_async_calls(cli
)) {
939 return NT_STATUS_INVALID_PARAMETER
;
941 ev
= tevent_context_init(mem_ctx
);
945 req
= cli_smb_send(mem_ctx
, ev
, cli
, smb_command
, additional_flags
,
946 wct
, vwv
, num_bytes
, bytes
);
950 if (!tevent_req_poll_ntstatus(req
, ev
, &status
)) {
953 status
= cli_smb_recv(req
, NULL
, NULL
, min_wct
, pwct
, pvwv
,
957 if (NT_STATUS_IS_OK(status
) && (result_parent
!= NULL
)) {
958 *result_parent
= req
;