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"
25 /****************************************************************************
26 Get UNIX extensions version info.
27 ****************************************************************************/
29 struct cli_unix_extensions_version_state {
30 struct cli_state *cli;
33 uint16_t major, minor;
34 uint32_t caplow, caphigh;
37 static void cli_unix_extensions_version_done(struct tevent_req *subreq);
39 struct tevent_req *cli_unix_extensions_version_send(TALLOC_CTX *mem_ctx,
40 struct tevent_context *ev,
41 struct cli_state *cli)
43 struct tevent_req *req, *subreq;
44 struct cli_unix_extensions_version_state *state;
46 req = tevent_req_create(mem_ctx, &state,
47 struct cli_unix_extensions_version_state);
52 SSVAL(state->setup, 0, TRANSACT2_QFSINFO);
53 SSVAL(state->param, 0, SMB_QUERY_CIFS_UNIX_INFO);
55 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
60 if (tevent_req_nomem(subreq, req)) {
61 return tevent_req_post(req, ev);
63 tevent_req_set_callback(subreq, cli_unix_extensions_version_done, req);
67 static void cli_unix_extensions_version_done(struct tevent_req *subreq)
69 struct tevent_req *req = tevent_req_callback_data(
70 subreq, struct tevent_req);
71 struct cli_unix_extensions_version_state *state = tevent_req_data(
72 req, struct cli_unix_extensions_version_state);
77 status = cli_trans_recv(subreq, state, NULL, 0, NULL, NULL, 0, NULL,
78 &data, 12, &num_data);
80 if (!NT_STATUS_IS_OK(status)) {
81 tevent_req_nterror(req, status);
85 state->major = SVAL(data, 0);
86 state->minor = SVAL(data, 2);
87 state->caplow = IVAL(data, 4);
88 state->caphigh = IVAL(data, 8);
93 NTSTATUS cli_unix_extensions_version_recv(struct tevent_req *req,
94 uint16_t *pmajor, uint16_t *pminor,
98 struct cli_unix_extensions_version_state *state = tevent_req_data(
99 req, struct cli_unix_extensions_version_state);
102 if (tevent_req_is_nterror(req, &status)) {
105 *pmajor = state->major;
106 *pminor = state->minor;
107 *pcaplow = state->caplow;
108 *pcaphigh = state->caphigh;
109 state->cli->server_posix_capabilities = *pcaplow;
113 NTSTATUS cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor,
114 uint16 *pminor, uint32 *pcaplow,
117 TALLOC_CTX *frame = talloc_stackframe();
118 struct event_context *ev;
119 struct tevent_req *req;
120 NTSTATUS status = NT_STATUS_OK;
122 if (cli_has_async_calls(cli)) {
124 * Can't use sync call while an async call is in flight
126 status = NT_STATUS_INVALID_PARAMETER;
130 ev = event_context_init(frame);
132 status = NT_STATUS_NO_MEMORY;
136 req = cli_unix_extensions_version_send(frame, ev, cli);
138 status = NT_STATUS_NO_MEMORY;
142 if (!tevent_req_poll(req, ev)) {
143 status = map_nt_error_from_unix(errno);
147 status = cli_unix_extensions_version_recv(req, pmajor, pminor, pcaplow,
151 if (!NT_STATUS_IS_OK(status)) {
152 cli_set_error(cli, status);
157 /****************************************************************************
158 Set UNIX extensions capabilities.
159 ****************************************************************************/
161 struct cli_set_unix_extensions_capabilities_state {
162 struct cli_state *cli;
168 static void cli_set_unix_extensions_capabilities_done(
169 struct tevent_req *subreq);
171 struct tevent_req *cli_set_unix_extensions_capabilities_send(
172 TALLOC_CTX *mem_ctx, struct tevent_context *ev, struct cli_state *cli,
173 uint16_t major, uint16_t minor, uint32_t caplow, uint32_t caphigh)
175 struct tevent_req *req, *subreq;
176 struct cli_set_unix_extensions_capabilities_state *state;
178 req = tevent_req_create(
180 struct cli_set_unix_extensions_capabilities_state);
186 SSVAL(state->setup+0, 0, TRANSACT2_SETFSINFO);
188 SSVAL(state->param, 0, 0);
189 SSVAL(state->param, 2, SMB_SET_CIFS_UNIX_INFO);
191 SSVAL(state->data, 0, major);
192 SSVAL(state->data, 2, minor);
193 SIVAL(state->data, 4, caplow);
194 SIVAL(state->data, 8, caphigh);
196 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
200 state->data, 12, 560);
201 if (tevent_req_nomem(subreq, req)) {
202 return tevent_req_post(req, ev);
204 tevent_req_set_callback(
205 subreq, cli_set_unix_extensions_capabilities_done, req);
209 static void cli_set_unix_extensions_capabilities_done(
210 struct tevent_req *subreq)
212 struct tevent_req *req = tevent_req_callback_data(
213 subreq, struct tevent_req);
214 struct cli_set_unix_extensions_capabilities_state *state = tevent_req_data(
215 req, struct cli_set_unix_extensions_capabilities_state);
217 NTSTATUS status = cli_trans_recv(subreq, NULL, NULL, 0, NULL,
218 NULL, 0, NULL, NULL, 0, NULL);
219 if (NT_STATUS_IS_OK(status)) {
220 state->cli->requested_posix_capabilities = IVAL(state->data, 4);
222 tevent_req_simple_finish_ntstatus(subreq, status);
225 NTSTATUS cli_set_unix_extensions_capabilities_recv(struct tevent_req *req)
227 return tevent_req_simple_recv_ntstatus(req);
230 NTSTATUS cli_set_unix_extensions_capabilities(struct cli_state *cli,
231 uint16 major, uint16 minor,
232 uint32 caplow, uint32 caphigh)
234 struct tevent_context *ev;
235 struct tevent_req *req;
236 NTSTATUS status = NT_STATUS_NO_MEMORY;
238 if (cli_has_async_calls(cli)) {
239 return NT_STATUS_INVALID_PARAMETER;
241 ev = tevent_context_init(talloc_tos());
245 req = cli_set_unix_extensions_capabilities_send(
246 ev, ev, cli, major, minor, caplow, caphigh);
250 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
253 status = cli_set_unix_extensions_capabilities_recv(req);
256 if (!NT_STATUS_IS_OK(status)) {
257 cli_set_error(cli, status);
259 cli->requested_posix_capabilities = caplow;
264 struct cli_get_fs_attr_info_state {
270 static void cli_get_fs_attr_info_done(struct tevent_req *subreq);
272 struct tevent_req *cli_get_fs_attr_info_send(TALLOC_CTX *mem_ctx,
273 struct tevent_context *ev,
274 struct cli_state *cli)
276 struct tevent_req *subreq, *req;
277 struct cli_get_fs_attr_info_state *state;
279 req = tevent_req_create(mem_ctx, &state,
280 struct cli_get_fs_attr_info_state);
284 SSVAL(state->setup+0, 0, TRANSACT2_QFSINFO);
285 SSVAL(state->param+0, 0, SMB_QUERY_FS_ATTRIBUTE_INFO);
287 subreq = cli_trans_send(state, ev, cli, SMBtrans2,
292 if (tevent_req_nomem(subreq, req)) {
293 return tevent_req_post(req, ev);
295 tevent_req_set_callback(subreq, cli_get_fs_attr_info_done, req);
299 static void cli_get_fs_attr_info_done(struct tevent_req *subreq)
301 struct tevent_req *req = tevent_req_callback_data(
302 subreq, struct tevent_req);
303 struct cli_get_fs_attr_info_state *state = tevent_req_data(
304 req, struct cli_get_fs_attr_info_state);
309 status = cli_trans_recv(subreq, talloc_tos(), NULL, 0, NULL,
310 NULL, 0, NULL, &data, 12, &num_data);
312 if (!NT_STATUS_IS_OK(status)) {
313 tevent_req_nterror(req, status);
316 state->fs_attr = IVAL(data, 0);
318 tevent_req_done(req);
321 NTSTATUS cli_get_fs_attr_info_recv(struct tevent_req *req, uint32_t *fs_attr)
323 struct cli_get_fs_attr_info_state *state = tevent_req_data(
324 req, struct cli_get_fs_attr_info_state);
327 if (tevent_req_is_nterror(req, &status)) {
330 *fs_attr = state->fs_attr;
334 NTSTATUS cli_get_fs_attr_info(struct cli_state *cli, uint32_t *fs_attr)
336 struct tevent_context *ev;
337 struct tevent_req *req;
338 NTSTATUS status = NT_STATUS_NO_MEMORY;
340 if (cli_has_async_calls(cli)) {
341 return NT_STATUS_INVALID_PARAMETER;
343 ev = tevent_context_init(talloc_tos());
347 req = cli_get_fs_attr_info_send(ev, ev, cli);
351 if (!tevent_req_poll_ntstatus(req, ev, &status)) {
354 status = cli_get_fs_attr_info_recv(req, fs_attr);
357 if (!NT_STATUS_IS_OK(status)) {
358 cli_set_error(cli, status);
363 NTSTATUS cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name,
364 uint32 *pserial_number, time_t *pdate)
370 uint32_t rdata_count;
373 SSVAL(setup, 0, TRANSACT2_QFSINFO);
374 SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
376 status = cli_trans(talloc_tos(), cli, SMBtrans2,
383 &rdata, 10, &rdata_count);
384 if (!NT_STATUS_IS_OK(status)) {
390 ts = interpret_long_date((char *)rdata);
393 if (pserial_number) {
394 *pserial_number = IVAL(rdata,8);
396 nlen = IVAL(rdata,12);
397 clistr_pull(cli->inbuf, volume_name, rdata + 18, sizeof(fstring),
400 /* todo: but not yet needed
401 * return the other stuff
408 bool cli_get_fs_full_size_info(struct cli_state *cli,
409 uint64_t *total_allocation_units,
410 uint64_t *caller_allocation_units,
411 uint64_t *actual_allocation_units,
412 uint64_t *sectors_per_allocation_unit,
413 uint64_t *bytes_per_sector)
418 char *rparam=NULL, *rdata=NULL;
419 unsigned int rparam_count=0, rdata_count=0;
421 setup = TRANSACT2_QFSINFO;
423 SSVAL(param,0,SMB_FS_FULL_SIZE_INFORMATION);
425 if (!cli_send_trans(cli, SMBtrans2,
434 if (!cli_receive_trans(cli, SMBtrans2,
435 &rparam, &rparam_count,
436 &rdata, &rdata_count)) {
440 if (cli_is_error(cli)) {
447 if (rdata_count != 32) {
451 if (total_allocation_units) {
452 *total_allocation_units = BIG_UINT(rdata, 0);
454 if (caller_allocation_units) {
455 *caller_allocation_units = BIG_UINT(rdata,8);
457 if (actual_allocation_units) {
458 *actual_allocation_units = BIG_UINT(rdata,16);
460 if (sectors_per_allocation_unit) {
461 *sectors_per_allocation_unit = IVAL(rdata,24);
463 if (bytes_per_sector) {
464 *bytes_per_sector = IVAL(rdata,28);
474 bool cli_get_posix_fs_info(struct cli_state *cli,
475 uint32 *optimal_transfer_size,
477 uint64_t *total_blocks,
478 uint64_t *blocks_available,
479 uint64_t *user_blocks_available,
480 uint64_t *total_file_nodes,
481 uint64_t *free_file_nodes,
482 uint64_t *fs_identifier)
487 char *rparam=NULL, *rdata=NULL;
488 unsigned int rparam_count=0, rdata_count=0;
490 setup = TRANSACT2_QFSINFO;
492 SSVAL(param,0,SMB_QUERY_POSIX_FS_INFO);
494 if (!cli_send_trans(cli, SMBtrans2,
503 if (!cli_receive_trans(cli, SMBtrans2,
504 &rparam, &rparam_count,
505 &rdata, &rdata_count)) {
509 if (cli_is_error(cli)) {
516 if (rdata_count != 56) {
520 if (optimal_transfer_size) {
521 *optimal_transfer_size = IVAL(rdata, 0);
524 *block_size = IVAL(rdata,4);
527 *total_blocks = BIG_UINT(rdata,8);
529 if (blocks_available) {
530 *blocks_available = BIG_UINT(rdata,16);
532 if (user_blocks_available) {
533 *user_blocks_available = BIG_UINT(rdata,24);
535 if (total_file_nodes) {
536 *total_file_nodes = BIG_UINT(rdata,32);
538 if (free_file_nodes) {
539 *free_file_nodes = BIG_UINT(rdata,40);
542 *fs_identifier = BIG_UINT(rdata,48);
553 /******************************************************************************
554 Send/receive the request encryption blob.
555 ******************************************************************************/
557 static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
561 char *rparam=NULL, *rdata=NULL;
562 unsigned int rparam_count=0, rdata_count=0;
563 NTSTATUS status = NT_STATUS_OK;
565 setup = TRANSACT2_SETFSINFO;
568 SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
570 if (!cli_send_trans(cli, SMBtrans2,
575 (char *)in->data, in->length, CLI_BUFFER_SIZE)) {
576 status = cli_nt_error(cli);
580 if (!cli_receive_trans(cli, SMBtrans2,
581 &rparam, &rparam_count,
582 &rdata, &rdata_count)) {
583 status = cli_nt_error(cli);
587 if (cli_is_error(cli)) {
588 status = cli_nt_error(cli);
589 if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
594 *out = data_blob(rdata, rdata_count);
595 *param_out = data_blob(rparam, rparam_count);
604 /******************************************************************************
605 Make a client state struct.
606 ******************************************************************************/
608 static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
610 struct smb_trans_enc_state *es = NULL;
611 es = SMB_MALLOC_P(struct smb_trans_enc_state);
616 es->smb_enc_type = smb_enc_type;
618 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
619 if (smb_enc_type == SMB_TRANS_ENC_GSS) {
620 es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
621 if (!es->s.gss_state) {
625 ZERO_STRUCTP(es->s.gss_state);
631 /******************************************************************************
632 Start a raw ntlmssp encryption.
633 ******************************************************************************/
635 NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
640 DATA_BLOB blob_in = data_blob_null;
641 DATA_BLOB blob_out = data_blob_null;
642 DATA_BLOB param_out = data_blob_null;
643 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
644 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
647 return NT_STATUS_NO_MEMORY;
649 status = ntlmssp_client_start(NULL,
652 lp_client_ntlmv2_auth(),
653 &es->s.ntlmssp_state);
654 if (!NT_STATUS_IS_OK(status)) {
658 ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
659 es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
661 if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
664 if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
667 if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
672 status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
673 data_blob_free(&blob_in);
674 data_blob_free(¶m_out);
675 if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
676 NTSTATUS trans_status = enc_blob_send_receive(cli,
680 if (!NT_STATUS_EQUAL(trans_status,
681 NT_STATUS_MORE_PROCESSING_REQUIRED) &&
682 !NT_STATUS_IS_OK(trans_status)) {
683 status = trans_status;
685 if (param_out.length == 2) {
686 es->enc_ctx_num = SVAL(param_out.data, 0);
690 data_blob_free(&blob_out);
691 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
693 data_blob_free(&blob_in);
695 if (NT_STATUS_IS_OK(status)) {
696 /* Replace the old state, if any. */
697 if (cli->trans_enc_state) {
698 common_free_encryption_state(&cli->trans_enc_state);
700 cli->trans_enc_state = es;
701 cli->trans_enc_state->enc_on = True;
707 common_free_encryption_state(&es);
711 #if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
713 #ifndef SMB_GSS_REQUIRED_FLAGS
714 #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)
717 /******************************************************************************
718 Get client gss blob to send to a server.
719 ******************************************************************************/
721 static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
725 DATA_BLOB spnego_blob_in,
726 DATA_BLOB *p_blob_out)
728 const char *krb_mechs[] = {OID_KERBEROS5, NULL};
732 gss_buffer_desc input_name;
733 gss_buffer_desc *p_tok_in;
734 gss_buffer_desc tok_out, tok_in;
735 DATA_BLOB blob_out = data_blob_null;
736 DATA_BLOB blob_in = data_blob_null;
737 char *host_princ_s = NULL;
738 OM_uint32 ret_flags = 0;
739 NTSTATUS status = NT_STATUS_OK;
741 gss_OID_desc nt_hostbased_service =
742 {10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
744 memset(&tok_out, '\0', sizeof(tok_out));
746 /* Get a ticket for the service@host */
747 if (asprintf(&host_princ_s, "%s@%s", service, host) == -1) {
748 return NT_STATUS_NO_MEMORY;
751 input_name.value = host_princ_s;
752 input_name.length = strlen(host_princ_s) + 1;
754 ret = gss_import_name(&min,
756 &nt_hostbased_service,
759 if (ret != GSS_S_COMPLETE) {
760 SAFE_FREE(host_princ_s);
761 return map_nt_error_from_gss(ret, min);
764 if (spnego_blob_in.length == 0) {
765 p_tok_in = GSS_C_NO_BUFFER;
767 /* Remove the SPNEGO wrapper */
768 if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
769 status = NT_STATUS_UNSUCCESSFUL;
772 tok_in.value = blob_in.data;
773 tok_in.length = blob_in.length;
777 ret = gss_init_sec_context(&min,
778 GSS_C_NO_CREDENTIAL, /* Use our default cred. */
779 &es->s.gss_state->gss_ctx,
781 GSS_C_NO_OID, /* default OID. */
782 GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG | GSS_C_DELEG_FLAG,
783 GSS_C_INDEFINITE, /* requested ticket lifetime. */
784 NULL, /* no channel bindings */
786 NULL, /* ignore mech type */
789 NULL); /* ignore time_rec */
791 status = map_nt_error_from_gss(ret, min);
792 if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
793 ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
794 DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
799 if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
800 status = NT_STATUS_ACCESS_DENIED;
803 blob_out = data_blob(tok_out.value, tok_out.length);
805 /* Wrap in an SPNEGO wrapper */
806 *p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
810 data_blob_free(&blob_out);
811 data_blob_free(&blob_in);
812 SAFE_FREE(host_princ_s);
813 gss_release_name(&min, &srv_name);
815 gss_release_buffer(&min, &tok_out);
820 /******************************************************************************
821 Start a SPNEGO gssapi encryption context.
822 ******************************************************************************/
824 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
826 DATA_BLOB blob_recv = data_blob_null;
827 DATA_BLOB blob_send = data_blob_null;
828 DATA_BLOB param_out = data_blob_null;
829 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
831 const char *servicename;
832 struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
835 return NT_STATUS_NO_MEMORY;
838 name_to_fqdn(fqdn, cli->desthost);
841 servicename = "cifs";
842 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
843 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
844 servicename = "host";
845 status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
846 if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
852 data_blob_free(&blob_recv);
853 status = enc_blob_send_receive(cli, &blob_send, &blob_recv, ¶m_out);
854 if (param_out.length == 2) {
855 es->enc_ctx_num = SVAL(param_out.data, 0);
857 data_blob_free(&blob_send);
858 status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
859 } while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
860 data_blob_free(&blob_recv);
862 if (NT_STATUS_IS_OK(status)) {
863 /* Replace the old state, if any. */
864 if (cli->trans_enc_state) {
865 common_free_encryption_state(&cli->trans_enc_state);
867 cli->trans_enc_state = es;
868 cli->trans_enc_state->enc_on = True;
874 common_free_encryption_state(&es);
878 NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
880 return NT_STATUS_NOT_SUPPORTED;
884 /********************************************************************
885 Ensure a connection is encrypted.
886 ********************************************************************/
888 NTSTATUS cli_force_encryption(struct cli_state *c,
889 const char *username,
890 const char *password,
894 uint32 caplow, caphigh;
897 if (!SERVER_HAS_UNIX_CIFS(c)) {
898 return NT_STATUS_NOT_SUPPORTED;
901 status = cli_unix_extensions_version(c, &major, &minor, &caplow,
903 if (!NT_STATUS_IS_OK(status)) {
904 DEBUG(10, ("cli_force_encryption: cli_unix_extensions_version "
905 "returned %s\n", nt_errstr(status)));
906 return NT_STATUS_UNKNOWN_REVISION;
909 if (!(caplow & CIFS_UNIX_TRANSPORT_ENCRYPTION_CAP)) {
910 return NT_STATUS_UNSUPPORTED_COMPRESSION;
913 if (c->use_kerberos) {
914 return cli_gss_smb_encryption_start(c);
916 return cli_raw_ntlm_smb_encryption_start(c,