2 Unix SMB/CIFS implementation.
4 Copyright (C) Stefan (metze) Metzmacher 2003
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 "../libcli/auth/spnego.h"
24 /****************************************************************************
25 Get UNIX extensions version info.
26 ****************************************************************************/
28 bool cli_unix_extensions_version(struct cli_state
*cli
, uint16
*pmajor
, uint16
*pminor
,
29 uint32
*pcaplow
, uint32
*pcaphigh
)
34 char *rparam
=NULL
, *rdata
=NULL
;
35 unsigned int rparam_count
=0, rdata_count
=0;
37 setup
= TRANSACT2_QFSINFO
;
39 SSVAL(param
,0,SMB_QUERY_CIFS_UNIX_INFO
);
41 if (!cli_send_trans(cli
, SMBtrans2
,
50 if (!cli_receive_trans(cli
, SMBtrans2
,
51 &rparam
, &rparam_count
,
52 &rdata
, &rdata_count
)) {
56 if (cli_is_error(cli
)) {
63 if (rdata_count
< 12) {
67 *pmajor
= SVAL(rdata
,0);
68 *pminor
= SVAL(rdata
,2);
69 cli
->posix_capabilities
= *pcaplow
= IVAL(rdata
,4);
70 *pcaphigh
= IVAL(rdata
,8);
72 /* todo: but not yet needed
73 * return the other stuff
83 /****************************************************************************
84 Set UNIX extensions capabilities.
85 ****************************************************************************/
87 bool cli_set_unix_extensions_capabilities(struct cli_state
*cli
, uint16 major
, uint16 minor
,
88 uint32 caplow
, uint32 caphigh
)
94 char *rparam
=NULL
, *rdata
=NULL
;
95 unsigned int rparam_count
=0, rdata_count
=0;
97 setup
= TRANSACT2_SETFSINFO
;
100 SSVAL(param
,2,SMB_SET_CIFS_UNIX_INFO
);
104 SIVAL(data
,4,caplow
);
105 SIVAL(data
,8,caphigh
);
107 if (!cli_send_trans(cli
, SMBtrans2
,
116 if (!cli_receive_trans(cli
, SMBtrans2
,
117 &rparam
, &rparam_count
,
118 &rdata
, &rdata_count
)) {
122 if (cli_is_error(cli
)) {
136 bool cli_get_fs_attr_info(struct cli_state
*cli
, uint32
*fs_attr
)
141 char *rparam
=NULL
, *rdata
=NULL
;
142 unsigned int rparam_count
=0, rdata_count
=0;
145 smb_panic("cli_get_fs_attr_info() called with NULL Pionter!");
147 setup
= TRANSACT2_QFSINFO
;
149 SSVAL(param
,0,SMB_QUERY_FS_ATTRIBUTE_INFO
);
151 if (!cli_send_trans(cli
, SMBtrans2
,
160 if (!cli_receive_trans(cli
, SMBtrans2
,
161 &rparam
, &rparam_count
,
162 &rdata
, &rdata_count
)) {
166 if (cli_is_error(cli
)) {
173 if (rdata_count
< 12) {
177 *fs_attr
= IVAL(rdata
,0);
179 /* todo: but not yet needed
180 * return the other stuff
190 bool cli_get_fs_volume_info_old(struct cli_state
*cli
, fstring volume_name
, uint32
*pserial_number
)
195 char *rparam
=NULL
, *rdata
=NULL
;
196 unsigned int rparam_count
=0, rdata_count
=0;
199 setup
= TRANSACT2_QFSINFO
;
201 SSVAL(param
,0,SMB_INFO_VOLUME
);
203 if (!cli_send_trans(cli
, SMBtrans2
,
212 if (!cli_receive_trans(cli
, SMBtrans2
,
213 &rparam
, &rparam_count
,
214 &rdata
, &rdata_count
)) {
218 if (cli_is_error(cli
)) {
225 if (rdata_count
< 5) {
229 if (pserial_number
) {
230 *pserial_number
= IVAL(rdata
,0);
232 nlen
= CVAL(rdata
,l2_vol_cch
);
233 clistr_pull(cli
->inbuf
, volume_name
, rdata
+ l2_vol_szVolLabel
,
234 sizeof(fstring
), nlen
, STR_NOALIGN
);
236 /* todo: but not yet needed
237 * return the other stuff
247 bool cli_get_fs_volume_info(struct cli_state
*cli
, fstring volume_name
, uint32
*pserial_number
, time_t *pdate
)
252 char *rparam
=NULL
, *rdata
=NULL
;
253 unsigned int rparam_count
=0, rdata_count
=0;
256 setup
= TRANSACT2_QFSINFO
;
258 SSVAL(param
,0,SMB_QUERY_FS_VOLUME_INFO
);
260 if (!cli_send_trans(cli
, SMBtrans2
,
269 if (!cli_receive_trans(cli
, SMBtrans2
,
270 &rparam
, &rparam_count
,
271 &rdata
, &rdata_count
)) {
275 if (cli_is_error(cli
)) {
282 if (rdata_count
< 19) {
288 ts
= interpret_long_date(rdata
);
291 if (pserial_number
) {
292 *pserial_number
= IVAL(rdata
,8);
294 nlen
= IVAL(rdata
,12);
295 clistr_pull(cli
->inbuf
, volume_name
, rdata
+ 18, sizeof(fstring
),
298 /* todo: but not yet needed
299 * return the other stuff
309 bool cli_get_fs_full_size_info(struct cli_state
*cli
,
310 uint64_t *total_allocation_units
,
311 uint64_t *caller_allocation_units
,
312 uint64_t *actual_allocation_units
,
313 uint64_t *sectors_per_allocation_unit
,
314 uint64_t *bytes_per_sector
)
319 char *rparam
=NULL
, *rdata
=NULL
;
320 unsigned int rparam_count
=0, rdata_count
=0;
322 setup
= TRANSACT2_QFSINFO
;
324 SSVAL(param
,0,SMB_FS_FULL_SIZE_INFORMATION
);
326 if (!cli_send_trans(cli
, SMBtrans2
,
335 if (!cli_receive_trans(cli
, SMBtrans2
,
336 &rparam
, &rparam_count
,
337 &rdata
, &rdata_count
)) {
341 if (cli_is_error(cli
)) {
348 if (rdata_count
!= 32) {
352 if (total_allocation_units
) {
353 *total_allocation_units
= BIG_UINT(rdata
, 0);
355 if (caller_allocation_units
) {
356 *caller_allocation_units
= BIG_UINT(rdata
,8);
358 if (actual_allocation_units
) {
359 *actual_allocation_units
= BIG_UINT(rdata
,16);
361 if (sectors_per_allocation_unit
) {
362 *sectors_per_allocation_unit
= IVAL(rdata
,24);
364 if (bytes_per_sector
) {
365 *bytes_per_sector
= IVAL(rdata
,28);
375 bool cli_get_posix_fs_info(struct cli_state
*cli
,
376 uint32
*optimal_transfer_size
,
378 uint64_t *total_blocks
,
379 uint64_t *blocks_available
,
380 uint64_t *user_blocks_available
,
381 uint64_t *total_file_nodes
,
382 uint64_t *free_file_nodes
,
383 uint64_t *fs_identifier
)
388 char *rparam
=NULL
, *rdata
=NULL
;
389 unsigned int rparam_count
=0, rdata_count
=0;
391 setup
= TRANSACT2_QFSINFO
;
393 SSVAL(param
,0,SMB_QUERY_POSIX_FS_INFO
);
395 if (!cli_send_trans(cli
, SMBtrans2
,
404 if (!cli_receive_trans(cli
, SMBtrans2
,
405 &rparam
, &rparam_count
,
406 &rdata
, &rdata_count
)) {
410 if (cli_is_error(cli
)) {
417 if (rdata_count
!= 56) {
421 if (optimal_transfer_size
) {
422 *optimal_transfer_size
= IVAL(rdata
, 0);
425 *block_size
= IVAL(rdata
,4);
428 *total_blocks
= BIG_UINT(rdata
,8);
430 if (blocks_available
) {
431 *blocks_available
= BIG_UINT(rdata
,16);
433 if (user_blocks_available
) {
434 *user_blocks_available
= BIG_UINT(rdata
,24);
436 if (total_file_nodes
) {
437 *total_file_nodes
= BIG_UINT(rdata
,32);
439 if (free_file_nodes
) {
440 *free_file_nodes
= BIG_UINT(rdata
,40);
443 *fs_identifier
= BIG_UINT(rdata
,48);
454 /******************************************************************************
455 Send/receive the request encryption blob.
456 ******************************************************************************/
458 static NTSTATUS
enc_blob_send_receive(struct cli_state
*cli
, DATA_BLOB
*in
, DATA_BLOB
*out
, DATA_BLOB
*param_out
)
462 char *rparam
=NULL
, *rdata
=NULL
;
463 unsigned int rparam_count
=0, rdata_count
=0;
464 NTSTATUS status
= NT_STATUS_OK
;
466 setup
= TRANSACT2_SETFSINFO
;
469 SSVAL(param
,2,SMB_REQUEST_TRANSPORT_ENCRYPTION
);
471 if (!cli_send_trans(cli
, SMBtrans2
,
476 (char *)in
->data
, in
->length
, CLI_BUFFER_SIZE
)) {
477 status
= cli_nt_error(cli
);
481 if (!cli_receive_trans(cli
, SMBtrans2
,
482 &rparam
, &rparam_count
,
483 &rdata
, &rdata_count
)) {
484 status
= cli_nt_error(cli
);
488 if (cli_is_error(cli
)) {
489 status
= cli_nt_error(cli
);
490 if (!NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
495 *out
= data_blob(rdata
, rdata_count
);
496 *param_out
= data_blob(rparam
, rparam_count
);
505 /******************************************************************************
506 Make a client state struct.
507 ******************************************************************************/
509 static struct smb_trans_enc_state
*make_cli_enc_state(enum smb_trans_enc_type smb_enc_type
)
511 struct smb_trans_enc_state
*es
= NULL
;
512 es
= SMB_MALLOC_P(struct smb_trans_enc_state
);
517 es
->smb_enc_type
= smb_enc_type
;
519 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
520 if (smb_enc_type
== SMB_TRANS_ENC_GSS
) {
521 es
->s
.gss_state
= SMB_MALLOC_P(struct smb_tran_enc_state_gss
);
522 if (!es
->s
.gss_state
) {
526 ZERO_STRUCTP(es
->s
.gss_state
);
532 /******************************************************************************
533 Start a raw ntlmssp encryption.
534 ******************************************************************************/
536 NTSTATUS
cli_raw_ntlm_smb_encryption_start(struct cli_state
*cli
,
541 DATA_BLOB blob_in
= data_blob_null
;
542 DATA_BLOB blob_out
= data_blob_null
;
543 DATA_BLOB param_out
= data_blob_null
;
544 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
545 struct smb_trans_enc_state
*es
= make_cli_enc_state(SMB_TRANS_ENC_NTLM
);
548 return NT_STATUS_NO_MEMORY
;
550 status
= ntlmssp_client_start(&es
->s
.ntlmssp_state
);
551 if (!NT_STATUS_IS_OK(status
)) {
555 ntlmssp_want_feature(es
->s
.ntlmssp_state
, NTLMSSP_FEATURE_SESSION_KEY
);
556 es
->s
.ntlmssp_state
->neg_flags
|= (NTLMSSP_NEGOTIATE_SIGN
|NTLMSSP_NEGOTIATE_SEAL
);
558 if (!NT_STATUS_IS_OK(status
= ntlmssp_set_username(es
->s
.ntlmssp_state
, user
))) {
561 if (!NT_STATUS_IS_OK(status
= ntlmssp_set_domain(es
->s
.ntlmssp_state
, domain
))) {
564 if (!NT_STATUS_IS_OK(status
= ntlmssp_set_password(es
->s
.ntlmssp_state
, pass
))) {
569 status
= ntlmssp_update(es
->s
.ntlmssp_state
, blob_in
, &blob_out
);
570 data_blob_free(&blob_in
);
571 data_blob_free(¶m_out
);
572 if (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
) || NT_STATUS_IS_OK(status
)) {
573 NTSTATUS trans_status
= enc_blob_send_receive(cli
,
577 if (!NT_STATUS_EQUAL(trans_status
,
578 NT_STATUS_MORE_PROCESSING_REQUIRED
) &&
579 !NT_STATUS_IS_OK(trans_status
)) {
580 status
= trans_status
;
582 if (param_out
.length
== 2) {
583 es
->enc_ctx_num
= SVAL(param_out
.data
, 0);
587 data_blob_free(&blob_out
);
588 } while (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
));
590 data_blob_free(&blob_in
);
592 if (NT_STATUS_IS_OK(status
)) {
593 /* Replace the old state, if any. */
594 if (cli
->trans_enc_state
) {
595 common_free_encryption_state(&cli
->trans_enc_state
);
597 cli
->trans_enc_state
= es
;
598 cli
->trans_enc_state
->enc_on
= True
;
604 common_free_encryption_state(&es
);
608 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
610 #ifndef SMB_GSS_REQUIRED_FLAGS
611 #define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
614 /******************************************************************************
615 Get client gss blob to send to a server.
616 ******************************************************************************/
618 static NTSTATUS
make_cli_gss_blob(struct smb_trans_enc_state
*es
,
622 DATA_BLOB spnego_blob_in
,
623 DATA_BLOB
*p_blob_out
)
625 const char *krb_mechs
[] = {OID_KERBEROS5
, NULL
};
629 gss_buffer_desc input_name
;
630 gss_buffer_desc
*p_tok_in
;
631 gss_buffer_desc tok_out
, tok_in
;
632 DATA_BLOB blob_out
= data_blob_null
;
633 DATA_BLOB blob_in
= data_blob_null
;
634 char *host_princ_s
= NULL
;
635 OM_uint32 ret_flags
= 0;
636 NTSTATUS status
= NT_STATUS_OK
;
638 gss_OID_desc nt_hostbased_service
=
639 {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
641 memset(&tok_out
, '\0', sizeof(tok_out
));
643 /* Get a ticket for the service@host */
644 if (asprintf(&host_princ_s
, "%s@%s", service
, host
) == -1) {
645 return NT_STATUS_NO_MEMORY
;
648 input_name
.value
= host_princ_s
;
649 input_name
.length
= strlen(host_princ_s
) + 1;
651 ret
= gss_import_name(&min
,
653 &nt_hostbased_service
,
656 if (ret
!= GSS_S_COMPLETE
) {
657 SAFE_FREE(host_princ_s
);
658 return map_nt_error_from_gss(ret
, min
);
661 if (spnego_blob_in
.length
== 0) {
662 p_tok_in
= GSS_C_NO_BUFFER
;
664 /* Remove the SPNEGO wrapper */
665 if (!spnego_parse_auth_response(spnego_blob_in
, status_in
, OID_KERBEROS5
, &blob_in
)) {
666 status
= NT_STATUS_UNSUCCESSFUL
;
669 tok_in
.value
= blob_in
.data
;
670 tok_in
.length
= blob_in
.length
;
674 ret
= gss_init_sec_context(&min
,
675 GSS_C_NO_CREDENTIAL
, /* Use our default cred. */
676 &es
->s
.gss_state
->gss_ctx
,
678 GSS_C_NO_OID
, /* default OID. */
679 GSS_C_MUTUAL_FLAG
| GSS_C_REPLAY_FLAG
| GSS_C_SEQUENCE_FLAG
| GSS_C_DELEG_FLAG
,
680 GSS_C_INDEFINITE
, /* requested ticket lifetime. */
681 NULL
, /* no channel bindings */
683 NULL
, /* ignore mech type */
686 NULL
); /* ignore time_rec */
688 status
= map_nt_error_from_gss(ret
, min
);
689 if (!NT_STATUS_IS_OK(status
) && !NT_STATUS_EQUAL(status
,NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
690 ADS_STATUS adss
= ADS_ERROR_GSS(ret
, min
);
691 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
696 if ((ret_flags
& SMB_GSS_REQUIRED_FLAGS
) != SMB_GSS_REQUIRED_FLAGS
) {
697 status
= NT_STATUS_ACCESS_DENIED
;
700 blob_out
= data_blob(tok_out
.value
, tok_out
.length
);
702 /* Wrap in an SPNEGO wrapper */
703 *p_blob_out
= gen_negTokenTarg(krb_mechs
, blob_out
);
707 data_blob_free(&blob_out
);
708 data_blob_free(&blob_in
);
709 SAFE_FREE(host_princ_s
);
710 gss_release_name(&min
, &srv_name
);
712 gss_release_buffer(&min
, &tok_out
);
717 /******************************************************************************
718 Start a SPNEGO gssapi encryption context.
719 ******************************************************************************/
721 NTSTATUS
cli_gss_smb_encryption_start(struct cli_state
*cli
)
723 DATA_BLOB blob_recv
= data_blob_null
;
724 DATA_BLOB blob_send
= data_blob_null
;
725 DATA_BLOB param_out
= data_blob_null
;
726 NTSTATUS status
= NT_STATUS_UNSUCCESSFUL
;
728 const char *servicename
;
729 struct smb_trans_enc_state
*es
= make_cli_enc_state(SMB_TRANS_ENC_GSS
);
732 return NT_STATUS_NO_MEMORY
;
735 name_to_fqdn(fqdn
, cli
->desthost
);
738 servicename
= "cifs";
739 status
= make_cli_gss_blob(es
, servicename
, fqdn
, NT_STATUS_OK
, blob_recv
, &blob_send
);
740 if (!NT_STATUS_EQUAL(status
,NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
741 servicename
= "host";
742 status
= make_cli_gss_blob(es
, servicename
, fqdn
, NT_STATUS_OK
, blob_recv
, &blob_send
);
743 if (!NT_STATUS_EQUAL(status
,NT_STATUS_MORE_PROCESSING_REQUIRED
)) {
749 data_blob_free(&blob_recv
);
750 status
= enc_blob_send_receive(cli
, &blob_send
, &blob_recv
, ¶m_out
);
751 if (param_out
.length
== 2) {
752 es
->enc_ctx_num
= SVAL(param_out
.data
, 0);
754 data_blob_free(&blob_send
);
755 status
= make_cli_gss_blob(es
, servicename
, fqdn
, status
, blob_recv
, &blob_send
);
756 } while (NT_STATUS_EQUAL(status
, NT_STATUS_MORE_PROCESSING_REQUIRED
));
757 data_blob_free(&blob_recv
);
759 if (NT_STATUS_IS_OK(status
)) {
760 /* Replace the old state, if any. */
761 if (cli
->trans_enc_state
) {
762 common_free_encryption_state(&cli
->trans_enc_state
);
764 cli
->trans_enc_state
= es
;
765 cli
->trans_enc_state
->enc_on
= True
;
771 common_free_encryption_state(&es
);
775 NTSTATUS
cli_gss_smb_encryption_start(struct cli_state
*cli
)
777 return NT_STATUS_NOT_SUPPORTED
;
781 /********************************************************************
782 Ensure a connection is encrypted.
783 ********************************************************************/
785 NTSTATUS
cli_force_encryption(struct cli_state
*c
,
786 const char *username
,
787 const char *password
,
791 uint32 caplow
, caphigh
;
793 if (!SERVER_HAS_UNIX_CIFS(c
)) {
794 return NT_STATUS_NOT_SUPPORTED
;
797 if (!cli_unix_extensions_version(c
, &major
, &minor
, &caplow
, &caphigh
)) {
798 return NT_STATUS_UNKNOWN_REVISION
;
801 if (!(caplow
& CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP
)) {
802 return NT_STATUS_UNSUPPORTED_COMPRESSION
;
805 if (c
->use_kerberos
) {
806 return cli_gss_smb_encryption_start(c
);
808 return cli_raw_ntlm_smb_encryption_start(c
,