s3:libsmb: Remove unused domain copy stored in cli_state
[Samba.git] / source3 / libsmb / clidfs.c
blobd8eb7e90a7b4626b061fe84e675e4f6b1a33f97c
1 /*
2 Unix SMB/CIFS implementation.
3 client connect/disconnect routines
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Gerald (Jerry) Carter 2004
6 Copyright (C) Jeremy Allison 2007-2009
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "includes.h"
23 #include "libsmb/libsmb.h"
24 #include "libsmb/clirap.h"
25 #include "msdfs.h"
26 #include "trans2.h"
27 #include "libsmb/nmblib.h"
28 #include "../libcli/smb/smbXcli_base.h"
30 /********************************************************************
31 Important point.
33 DFS paths are *always* of the form \server\share\<pathname> (the \ characters
34 are not C escaped here).
36 - but if we're using POSIX paths then <pathname> may contain
37 '/' separators, not '\\' separators. So cope with '\\' or '/'
38 as a separator when looking at the pathname part.... JRA.
39 ********************************************************************/
41 /********************************************************************
42 Ensure a connection is encrypted.
43 ********************************************************************/
45 NTSTATUS cli_cm_force_encryption(struct cli_state *c,
46 const char *username,
47 const char *password,
48 const char *domain,
49 const char *sharename)
51 NTSTATUS status;
53 if (smbXcli_conn_protocol(c->conn) >= PROTOCOL_SMB2_02) {
54 status = smb2cli_session_encryption_on(c->smb2.session);
55 if (NT_STATUS_EQUAL(status,NT_STATUS_NOT_SUPPORTED)) {
56 d_printf("Encryption required and "
57 "server doesn't support "
58 "SMB3 encryption - failing connect\n");
59 } else if (!NT_STATUS_IS_OK(status)) {
60 d_printf("Encryption required and "
61 "setup failed with error %s.\n",
62 nt_errstr(status));
64 return status;
67 status = cli_force_encryption(c,
68 username,
69 password,
70 domain);
72 if (NT_STATUS_EQUAL(status,NT_STATUS_NOT_SUPPORTED)) {
73 d_printf("Encryption required and "
74 "server that doesn't support "
75 "UNIX extensions - failing connect\n");
76 } else if (NT_STATUS_EQUAL(status,NT_STATUS_UNKNOWN_REVISION)) {
77 d_printf("Encryption required and "
78 "can't get UNIX CIFS extensions "
79 "version from server.\n");
80 } else if (NT_STATUS_EQUAL(status,NT_STATUS_UNSUPPORTED_COMPRESSION)) {
81 d_printf("Encryption required and "
82 "share %s doesn't support "
83 "encryption.\n", sharename);
84 } else if (!NT_STATUS_IS_OK(status)) {
85 d_printf("Encryption required and "
86 "setup failed with error %s.\n",
87 nt_errstr(status));
90 return status;
93 /********************************************************************
94 Return a connection to a server.
95 ********************************************************************/
97 static NTSTATUS do_connect(TALLOC_CTX *ctx,
98 const char *server,
99 const char *share,
100 const struct user_auth_info *auth_info,
101 bool show_sessetup,
102 bool force_encrypt,
103 int max_protocol,
104 int port,
105 int name_type,
106 struct cli_state **pcli)
108 struct cli_state *c = NULL;
109 char *servicename;
110 char *sharename;
111 char *newserver, *newshare;
112 const char *username;
113 const char *password;
114 NTSTATUS status;
115 int flags = 0;
117 /* make a copy so we don't modify the global string 'service' */
118 servicename = talloc_strdup(ctx,share);
119 if (!servicename) {
120 return NT_STATUS_NO_MEMORY;
122 sharename = servicename;
123 if (*sharename == '\\') {
124 sharename += 2;
125 if (server == NULL) {
126 server = sharename;
128 sharename = strchr_m(sharename,'\\');
129 if (!sharename) {
130 return NT_STATUS_NO_MEMORY;
132 *sharename = 0;
133 sharename++;
135 if (server == NULL) {
136 return NT_STATUS_INVALID_PARAMETER;
139 if (get_cmdline_auth_info_use_kerberos(auth_info)) {
140 flags |= CLI_FULL_CONNECTION_USE_KERBEROS;
142 if (get_cmdline_auth_info_fallback_after_kerberos(auth_info)) {
143 flags |= CLI_FULL_CONNECTION_FALLBACK_AFTER_KERBEROS;
145 if (get_cmdline_auth_info_use_ccache(auth_info)) {
146 flags |= CLI_FULL_CONNECTION_USE_CCACHE;
148 if (get_cmdline_auth_info_use_pw_nt_hash(auth_info)) {
149 flags |= CLI_FULL_CONNECTION_USE_NT_HASH;
152 status = cli_connect_nb(
153 server, NULL, port, name_type, NULL,
154 get_cmdline_auth_info_signing_state(auth_info),
155 flags, &c);
157 if (!NT_STATUS_IS_OK(status)) {
158 d_printf("Connection to %s failed (Error %s)\n",
159 server,
160 nt_errstr(status));
161 return status;
164 if (max_protocol == 0) {
165 max_protocol = PROTOCOL_NT1;
167 DEBUG(4,(" session request ok\n"));
169 status = smbXcli_negprot(c->conn, c->timeout,
170 lp_client_min_protocol(),
171 max_protocol);
173 if (!NT_STATUS_IS_OK(status)) {
174 d_printf("protocol negotiation failed: %s\n",
175 nt_errstr(status));
176 cli_shutdown(c);
177 return status;
180 if (smbXcli_conn_protocol(c->conn) >= PROTOCOL_SMB2_02) {
181 /* Ensure we ask for some initial credits. */
182 smb2cli_conn_set_max_credits(c->conn, DEFAULT_SMB2_MAX_CREDITS);
185 username = get_cmdline_auth_info_username(auth_info);
186 password = get_cmdline_auth_info_password(auth_info);
188 status = cli_session_setup(c, username,
189 password, strlen(password),
190 password, strlen(password),
191 lp_workgroup());
192 if (!NT_STATUS_IS_OK(status)) {
193 /* If a password was not supplied then
194 * try again with a null username. */
195 if (password[0] || !username[0] ||
196 get_cmdline_auth_info_use_kerberos(auth_info) ||
197 !NT_STATUS_IS_OK(status = cli_session_setup(c, "",
198 "", 0,
199 "", 0,
200 lp_workgroup()))) {
201 d_printf("session setup failed: %s\n",
202 nt_errstr(status));
203 if (NT_STATUS_EQUAL(status,
204 NT_STATUS_MORE_PROCESSING_REQUIRED))
205 d_printf("did you forget to run kinit?\n");
206 cli_shutdown(c);
207 return status;
209 d_printf("Anonymous login successful\n");
210 status = cli_set_username(c, "");
211 } else {
212 status = cli_set_username(c, username);
215 if (!NT_STATUS_IS_OK(status)) {
216 DEBUG(10,("cli_init_creds() failed: %s\n", nt_errstr(status)));
217 cli_shutdown(c);
218 return status;
221 if ( show_sessetup ) {
222 if (*c->server_domain) {
223 DEBUG(0,("Domain=[%s] OS=[%s] Server=[%s]\n",
224 c->server_domain,c->server_os,c->server_type));
225 } else if (*c->server_os || *c->server_type) {
226 DEBUG(0,("OS=[%s] Server=[%s]\n",
227 c->server_os,c->server_type));
230 DEBUG(4,(" session setup ok\n"));
232 /* here's the fun part....to support 'msdfs proxy' shares
233 (on Samba or windows) we have to issues a TRANS_GET_DFS_REFERRAL
234 here before trying to connect to the original share.
235 cli_check_msdfs_proxy() will fail if it is a normal share. */
237 if (smbXcli_conn_dfs_supported(c->conn) &&
238 cli_check_msdfs_proxy(ctx, c, sharename,
239 &newserver, &newshare,
240 force_encrypt,
241 username,
242 password,
243 lp_workgroup())) {
244 cli_shutdown(c);
245 return do_connect(ctx, newserver,
246 newshare, auth_info, false,
247 force_encrypt, max_protocol,
248 port, name_type, pcli);
251 /* must be a normal share */
253 status = cli_tree_connect(c, sharename, "?????",
254 password, strlen(password)+1);
255 if (!NT_STATUS_IS_OK(status)) {
256 d_printf("tree connect failed: %s\n", nt_errstr(status));
257 cli_shutdown(c);
258 return status;
261 if (force_encrypt) {
262 status = cli_cm_force_encryption(c,
263 username,
264 password,
265 lp_workgroup(),
266 sharename);
267 if (!NT_STATUS_IS_OK(status)) {
268 cli_shutdown(c);
269 return status;
273 DEBUG(4,(" tconx ok\n"));
274 *pcli = c;
275 return NT_STATUS_OK;
278 /****************************************************************************
279 ****************************************************************************/
281 static void cli_set_mntpoint(struct cli_state *cli, const char *mnt)
283 TALLOC_CTX *frame = talloc_stackframe();
284 char *name = clean_name(frame, mnt);
285 if (!name) {
286 TALLOC_FREE(frame);
287 return;
289 TALLOC_FREE(cli->dfs_mountpoint);
290 cli->dfs_mountpoint = talloc_strdup(cli, name);
291 TALLOC_FREE(frame);
294 /********************************************************************
295 Add a new connection to the list.
296 referring_cli == NULL means a new initial connection.
297 ********************************************************************/
299 static NTSTATUS cli_cm_connect(TALLOC_CTX *ctx,
300 struct cli_state *referring_cli,
301 const char *server,
302 const char *share,
303 const struct user_auth_info *auth_info,
304 bool show_hdr,
305 bool force_encrypt,
306 int max_protocol,
307 int port,
308 int name_type,
309 struct cli_state **pcli)
311 struct cli_state *cli;
312 NTSTATUS status;
314 status = do_connect(ctx, server, share,
315 auth_info,
316 show_hdr, force_encrypt, max_protocol,
317 port, name_type, &cli);
319 if (!NT_STATUS_IS_OK(status)) {
320 return status;
323 /* Enter into the list. */
324 if (referring_cli) {
325 DLIST_ADD_END(referring_cli, cli, struct cli_state *);
328 if (referring_cli && referring_cli->requested_posix_capabilities) {
329 uint16 major, minor;
330 uint32 caplow, caphigh;
331 status = cli_unix_extensions_version(cli, &major, &minor,
332 &caplow, &caphigh);
333 if (NT_STATUS_IS_OK(status)) {
334 cli_set_unix_extensions_capabilities(cli,
335 major, minor,
336 caplow, caphigh);
340 *pcli = cli;
341 return NT_STATUS_OK;
344 /********************************************************************
345 Return a connection to a server on a particular share.
346 ********************************************************************/
348 static struct cli_state *cli_cm_find(struct cli_state *cli,
349 const char *server,
350 const char *share)
352 struct cli_state *p;
354 if (cli == NULL) {
355 return NULL;
358 /* Search to the start of the list. */
359 for (p = cli; p; p = DLIST_PREV(p)) {
360 const char *remote_name =
361 smbXcli_conn_remote_name(p->conn);
363 if (strequal(server, remote_name) &&
364 strequal(share,p->share)) {
365 return p;
369 /* Search to the end of the list. */
370 for (p = cli->next; p; p = p->next) {
371 const char *remote_name =
372 smbXcli_conn_remote_name(p->conn);
374 if (strequal(server, remote_name) &&
375 strequal(share,p->share)) {
376 return p;
380 return NULL;
383 /****************************************************************************
384 Open a client connection to a \\server\share.
385 ****************************************************************************/
387 NTSTATUS cli_cm_open(TALLOC_CTX *ctx,
388 struct cli_state *referring_cli,
389 const char *server,
390 const char *share,
391 const struct user_auth_info *auth_info,
392 bool show_hdr,
393 bool force_encrypt,
394 int max_protocol,
395 int port,
396 int name_type,
397 struct cli_state **pcli)
399 /* Try to reuse an existing connection in this list. */
400 struct cli_state *c = cli_cm_find(referring_cli, server, share);
401 NTSTATUS status;
403 if (c) {
404 *pcli = c;
405 return NT_STATUS_OK;
408 if (auth_info == NULL) {
409 /* Can't do a new connection
410 * without auth info. */
411 d_printf("cli_cm_open() Unable to open connection [\\%s\\%s] "
412 "without auth info\n",
413 server, share );
414 return NT_STATUS_INVALID_PARAMETER;
417 status = cli_cm_connect(ctx,
418 referring_cli,
419 server,
420 share,
421 auth_info,
422 show_hdr,
423 force_encrypt,
424 max_protocol,
425 port,
426 name_type,
427 &c);
428 if (!NT_STATUS_IS_OK(status)) {
429 return status;
431 *pcli = c;
432 return NT_STATUS_OK;
435 /****************************************************************************
436 ****************************************************************************/
438 void cli_cm_display(struct cli_state *cli)
440 int i;
442 for (i=0; cli; cli = cli->next,i++ ) {
443 d_printf("%d:\tserver=%s, share=%s\n",
444 i, smbXcli_conn_remote_name(cli->conn), cli->share);
448 /****************************************************************************
449 ****************************************************************************/
451 /****************************************************************************
452 ****************************************************************************/
454 #if 0
455 void cli_cm_set_credentials(struct user_auth_info *auth_info)
457 SAFE_FREE(cm_creds.username);
458 cm_creds.username = SMB_STRDUP(get_cmdline_auth_info_username(
459 auth_info));
461 if (get_cmdline_auth_info_got_pass(auth_info)) {
462 cm_set_password(get_cmdline_auth_info_password(auth_info));
465 cm_creds.use_kerberos = get_cmdline_auth_info_use_kerberos(auth_info);
466 cm_creds.fallback_after_kerberos = false;
467 cm_creds.signing_state = get_cmdline_auth_info_signing_state(auth_info);
469 #endif
471 /**********************************************************************
472 split a dfs path into the server, share name, and extrapath components
473 **********************************************************************/
475 static bool split_dfs_path(TALLOC_CTX *ctx,
476 const char *nodepath,
477 char **pp_server,
478 char **pp_share,
479 char **pp_extrapath)
481 char *p, *q;
482 char *path;
484 *pp_server = NULL;
485 *pp_share = NULL;
486 *pp_extrapath = NULL;
488 path = talloc_strdup(ctx, nodepath);
489 if (!path) {
490 goto fail;
493 if ( path[0] != '\\' ) {
494 goto fail;
497 p = strchr_m( path + 1, '\\' );
498 if ( !p ) {
499 goto fail;
502 *p = '\0';
503 p++;
505 /* Look for any extra/deep path */
506 q = strchr_m(p, '\\');
507 if (q != NULL) {
508 *q = '\0';
509 q++;
510 *pp_extrapath = talloc_strdup(ctx, q);
511 } else {
512 *pp_extrapath = talloc_strdup(ctx, "");
514 if (*pp_extrapath == NULL) {
515 goto fail;
518 *pp_share = talloc_strdup(ctx, p);
519 if (*pp_share == NULL) {
520 goto fail;
523 *pp_server = talloc_strdup(ctx, &path[1]);
524 if (*pp_server == NULL) {
525 goto fail;
528 TALLOC_FREE(path);
529 return true;
531 fail:
532 TALLOC_FREE(*pp_share);
533 TALLOC_FREE(*pp_extrapath);
534 TALLOC_FREE(path);
535 return false;
538 /****************************************************************************
539 Return the original path truncated at the directory component before
540 the first wildcard character. Trust the caller to provide a NULL
541 terminated string
542 ****************************************************************************/
544 static char *clean_path(TALLOC_CTX *ctx, const char *path)
546 size_t len;
547 char *p1, *p2, *p;
548 char *path_out;
550 /* No absolute paths. */
551 while (IS_DIRECTORY_SEP(*path)) {
552 path++;
555 path_out = talloc_strdup(ctx, path);
556 if (!path_out) {
557 return NULL;
560 p1 = strchr_m(path_out, '*');
561 p2 = strchr_m(path_out, '?');
563 if (p1 || p2) {
564 if (p1 && p2) {
565 p = MIN(p1,p2);
566 } else if (!p1) {
567 p = p2;
568 } else {
569 p = p1;
571 *p = '\0';
573 /* Now go back to the start of this component. */
574 p1 = strrchr_m(path_out, '/');
575 p2 = strrchr_m(path_out, '\\');
576 p = MAX(p1,p2);
577 if (p) {
578 *p = '\0';
582 /* Strip any trailing separator */
584 len = strlen(path_out);
585 if ( (len > 0) && IS_DIRECTORY_SEP(path_out[len-1])) {
586 path_out[len-1] = '\0';
589 return path_out;
592 /****************************************************************************
593 ****************************************************************************/
595 static char *cli_dfs_make_full_path(TALLOC_CTX *ctx,
596 struct cli_state *cli,
597 const char *dir)
599 char path_sep = '\\';
601 /* Ensure the extrapath doesn't start with a separator. */
602 while (IS_DIRECTORY_SEP(*dir)) {
603 dir++;
606 if (cli->requested_posix_capabilities & CIFS_UNIX_POSIX_PATHNAMES_CAP) {
607 path_sep = '/';
609 return talloc_asprintf(ctx, "%c%s%c%s%c%s",
610 path_sep,
611 smbXcli_conn_remote_name(cli->conn),
612 path_sep,
613 cli->share,
614 path_sep,
615 dir);
618 /********************************************************************
619 check for dfs referral
620 ********************************************************************/
622 static bool cli_dfs_check_error(struct cli_state *cli, NTSTATUS expected,
623 NTSTATUS status)
625 /* only deal with DS when we negotiated NT_STATUS codes and UNICODE */
627 if (!(smbXcli_conn_use_unicode(cli->conn))) {
628 return false;
630 if (!(smb1cli_conn_capabilities(cli->conn) & CAP_STATUS32)) {
631 return false;
633 if (NT_STATUS_EQUAL(status, expected)) {
634 return true;
636 return false;
639 /********************************************************************
640 Get the dfs referral link.
641 ********************************************************************/
643 NTSTATUS cli_dfs_get_referral(TALLOC_CTX *ctx,
644 struct cli_state *cli,
645 const char *path,
646 struct client_dfs_referral **refs,
647 size_t *num_refs,
648 size_t *consumed)
650 unsigned int param_len = 0;
651 uint16_t recv_flags2;
652 uint8_t *param = NULL;
653 uint8_t *rdata = NULL;
654 char *p;
655 char *endp;
656 smb_ucs2_t *path_ucs;
657 char *consumed_path = NULL;
658 uint16_t consumed_ucs;
659 uint16 num_referrals;
660 struct client_dfs_referral *referrals = NULL;
661 NTSTATUS status;
662 TALLOC_CTX *frame = talloc_stackframe();
664 *num_refs = 0;
665 *refs = NULL;
667 param = talloc_array(talloc_tos(), uint8_t, 2);
668 if (!param) {
669 status = NT_STATUS_NO_MEMORY;
670 goto out;
672 SSVAL(param, 0, 0x03); /* max referral level */
674 param = trans2_bytes_push_str(param, smbXcli_conn_use_unicode(cli->conn),
675 path, strlen(path)+1,
676 NULL);
677 if (!param) {
678 status = NT_STATUS_NO_MEMORY;
679 goto out;
681 param_len = talloc_get_size(param);
682 path_ucs = (smb_ucs2_t *)&param[2];
684 if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
685 DATA_BLOB in_input_buffer;
686 DATA_BLOB in_output_buffer = data_blob_null;
687 DATA_BLOB out_input_buffer = data_blob_null;
688 DATA_BLOB out_output_buffer = data_blob_null;
690 in_input_buffer.data = param;
691 in_input_buffer.length = param_len;
693 status = smb2cli_ioctl(cli->conn,
694 cli->timeout,
695 cli->smb2.session,
696 cli->smb2.tcon,
697 UINT64_MAX, /* in_fid_persistent */
698 UINT64_MAX, /* in_fid_volatile */
699 FSCTL_DFS_GET_REFERRALS,
700 0, /* in_max_input_length */
701 &in_input_buffer,
702 CLI_BUFFER_SIZE, /* in_max_output_length */
703 &in_output_buffer,
704 SMB2_IOCTL_FLAG_IS_FSCTL,
705 talloc_tos(),
706 &out_input_buffer,
707 &out_output_buffer);
708 if (!NT_STATUS_IS_OK(status)) {
709 goto out;
712 if (out_output_buffer.length < 4) {
713 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
714 goto out;
717 recv_flags2 = FLAGS2_UNICODE_STRINGS;
718 rdata = out_output_buffer.data;
719 endp = (char *)rdata + out_output_buffer.length;
720 } else {
721 unsigned int data_len = 0;
722 uint16_t setup[1];
724 SSVAL(setup, 0, TRANSACT2_GET_DFS_REFERRAL);
726 status = cli_trans(talloc_tos(), cli, SMBtrans2,
727 NULL, 0xffff, 0, 0,
728 setup, 1, 0,
729 param, param_len, 2,
730 NULL, 0, CLI_BUFFER_SIZE,
731 &recv_flags2,
732 NULL, 0, NULL, /* rsetup */
733 NULL, 0, NULL,
734 &rdata, 4, &data_len);
735 if (!NT_STATUS_IS_OK(status)) {
736 goto out;
739 endp = (char *)rdata + data_len;
742 consumed_ucs = SVAL(rdata, 0);
743 num_referrals = SVAL(rdata, 2);
745 /* consumed_ucs is the number of bytes
746 * of the UCS2 path consumed not counting any
747 * terminating null. We need to convert
748 * back to unix charset and count again
749 * to get the number of bytes consumed from
750 * the incoming path. */
752 errno = 0;
753 if (pull_string_talloc(talloc_tos(),
754 NULL,
756 &consumed_path,
757 path_ucs,
758 consumed_ucs,
759 STR_UNICODE) == 0) {
760 if (errno != 0) {
761 status = map_nt_error_from_unix(errno);
762 } else {
763 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
765 goto out;
767 if (consumed_path == NULL) {
768 status = map_nt_error_from_unix(errno);
769 goto out;
771 *consumed = strlen(consumed_path);
773 if (num_referrals != 0) {
774 uint16 ref_version;
775 uint16 ref_size;
776 int i;
777 uint16 node_offset;
779 referrals = talloc_array(ctx, struct client_dfs_referral,
780 num_referrals);
782 if (!referrals) {
783 status = NT_STATUS_NO_MEMORY;
784 goto out;
786 /* start at the referrals array */
788 p = (char *)rdata+8;
789 for (i=0; i<num_referrals && p < endp; i++) {
790 if (p + 18 > endp) {
791 goto out;
793 ref_version = SVAL(p, 0);
794 ref_size = SVAL(p, 2);
795 node_offset = SVAL(p, 16);
797 if (ref_version != 3) {
798 p += ref_size;
799 continue;
802 referrals[i].proximity = SVAL(p, 8);
803 referrals[i].ttl = SVAL(p, 10);
805 if (p + node_offset > endp) {
806 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
807 goto out;
809 clistr_pull_talloc(referrals,
810 (const char *)rdata,
811 recv_flags2,
812 &referrals[i].dfspath,
813 p+node_offset,
814 PTR_DIFF(endp, p+node_offset),
815 STR_TERMINATE|STR_UNICODE);
817 if (!referrals[i].dfspath) {
818 status = map_nt_error_from_unix(errno);
819 goto out;
821 p += ref_size;
823 if (i < num_referrals) {
824 status = NT_STATUS_INVALID_NETWORK_RESPONSE;
825 goto out;
829 *num_refs = num_referrals;
830 *refs = referrals;
832 out:
834 TALLOC_FREE(frame);
835 return status;
838 /********************************************************************
839 ********************************************************************/
841 NTSTATUS cli_resolve_path(TALLOC_CTX *ctx,
842 const char *mountpt,
843 const struct user_auth_info *dfs_auth_info,
844 struct cli_state *rootcli,
845 const char *path,
846 struct cli_state **targetcli,
847 char **pp_targetpath)
849 struct client_dfs_referral *refs = NULL;
850 size_t num_refs = 0;
851 size_t consumed = 0;
852 struct cli_state *cli_ipc = NULL;
853 char *dfs_path = NULL;
854 char *cleanpath = NULL;
855 char *extrapath = NULL;
856 int pathlen;
857 char *server = NULL;
858 char *share = NULL;
859 struct cli_state *newcli = NULL;
860 char *newpath = NULL;
861 char *newmount = NULL;
862 char *ppath = NULL;
863 SMB_STRUCT_STAT sbuf;
864 uint32 attributes;
865 NTSTATUS status;
866 struct smbXcli_tcon *root_tcon = NULL;
867 struct smbXcli_tcon *target_tcon = NULL;
869 if ( !rootcli || !path || !targetcli ) {
870 return NT_STATUS_INVALID_PARAMETER;
873 /* Don't do anything if this is not a DFS root. */
875 if (smbXcli_conn_protocol(rootcli->conn) >= PROTOCOL_SMB2_02) {
876 root_tcon = rootcli->smb2.tcon;
877 } else {
878 root_tcon = rootcli->smb1.tcon;
881 if (!smbXcli_tcon_is_dfs_share(root_tcon)) {
882 *targetcli = rootcli;
883 *pp_targetpath = talloc_strdup(ctx, path);
884 if (!*pp_targetpath) {
885 return NT_STATUS_NO_MEMORY;
887 return NT_STATUS_OK;
890 *targetcli = NULL;
892 /* Send a trans2_query_path_info to check for a referral. */
894 cleanpath = clean_path(ctx, path);
895 if (!cleanpath) {
896 return NT_STATUS_NO_MEMORY;
899 dfs_path = cli_dfs_make_full_path(ctx, rootcli, cleanpath);
900 if (!dfs_path) {
901 return NT_STATUS_NO_MEMORY;
904 status = cli_qpathinfo_basic( rootcli, dfs_path, &sbuf, &attributes);
905 if (NT_STATUS_IS_OK(status)) {
906 /* This is an ordinary path, just return it. */
907 *targetcli = rootcli;
908 *pp_targetpath = talloc_strdup(ctx, path);
909 if (!*pp_targetpath) {
910 return NT_STATUS_NO_MEMORY;
912 goto done;
915 /* Special case where client asked for a path that does not exist */
917 if (cli_dfs_check_error(rootcli, NT_STATUS_OBJECT_NAME_NOT_FOUND,
918 status)) {
919 *targetcli = rootcli;
920 *pp_targetpath = talloc_strdup(ctx, path);
921 if (!*pp_targetpath) {
922 return NT_STATUS_NO_MEMORY;
924 goto done;
927 /* We got an error, check for DFS referral. */
929 if (!cli_dfs_check_error(rootcli, NT_STATUS_PATH_NOT_COVERED,
930 status)) {
931 return status;
934 /* Check for the referral. */
936 status = cli_cm_open(ctx,
937 rootcli,
938 smbXcli_conn_remote_name(rootcli->conn),
939 "IPC$",
940 dfs_auth_info,
941 false,
942 smb1cli_conn_encryption_on(rootcli->conn),
943 smbXcli_conn_protocol(rootcli->conn),
945 0x20,
946 &cli_ipc);
947 if (!NT_STATUS_IS_OK(status)) {
948 return status;
951 status = cli_dfs_get_referral(ctx, cli_ipc, dfs_path, &refs,
952 &num_refs, &consumed);
953 if (!NT_STATUS_IS_OK(status) || !num_refs) {
954 return status;
957 /* Just store the first referral for now. */
959 if (!refs[0].dfspath) {
960 return NT_STATUS_NOT_FOUND;
962 if (!split_dfs_path(ctx, refs[0].dfspath, &server, &share,
963 &extrapath)) {
964 return NT_STATUS_NOT_FOUND;
967 /* Make sure to recreate the original string including any wildcards. */
969 dfs_path = cli_dfs_make_full_path(ctx, rootcli, path);
970 if (!dfs_path) {
971 return NT_STATUS_NO_MEMORY;
973 pathlen = strlen(dfs_path);
974 consumed = MIN(pathlen, consumed);
975 *pp_targetpath = talloc_strdup(ctx, &dfs_path[consumed]);
976 if (!*pp_targetpath) {
977 return NT_STATUS_NO_MEMORY;
979 dfs_path[consumed] = '\0';
982 * *pp_targetpath is now the unconsumed part of the path.
983 * dfs_path is now the consumed part of the path
984 * (in \server\share\path format).
987 /* Open the connection to the target server & share */
988 status = cli_cm_open(ctx, rootcli,
989 server,
990 share,
991 dfs_auth_info,
992 false,
993 smb1cli_conn_encryption_on(rootcli->conn),
994 smbXcli_conn_protocol(rootcli->conn),
996 0x20,
997 targetcli);
998 if (!NT_STATUS_IS_OK(status)) {
999 d_printf("Unable to follow dfs referral [\\%s\\%s]\n",
1000 server, share );
1001 return status;
1004 if (extrapath && strlen(extrapath) > 0) {
1005 /* EMC Celerra NAS version 5.6.50 (at least) doesn't appear to */
1006 /* put the trailing \ on the path, so to be save we put one in if needed */
1007 if (extrapath[strlen(extrapath)-1] != '\\' && **pp_targetpath != '\\') {
1008 *pp_targetpath = talloc_asprintf(ctx,
1009 "%s\\%s",
1010 extrapath,
1011 *pp_targetpath);
1012 } else {
1013 *pp_targetpath = talloc_asprintf(ctx,
1014 "%s%s",
1015 extrapath,
1016 *pp_targetpath);
1018 if (!*pp_targetpath) {
1019 return NT_STATUS_NO_MEMORY;
1023 /* parse out the consumed mount path */
1024 /* trim off the \server\share\ */
1026 ppath = dfs_path;
1028 if (*ppath != '\\') {
1029 d_printf("cli_resolve_path: "
1030 "dfs_path (%s) not in correct format.\n",
1031 dfs_path );
1032 return NT_STATUS_NOT_FOUND;
1035 ppath++; /* Now pointing at start of server name. */
1037 if ((ppath = strchr_m( dfs_path, '\\' )) == NULL) {
1038 return NT_STATUS_NOT_FOUND;
1041 ppath++; /* Now pointing at start of share name. */
1043 if ((ppath = strchr_m( ppath+1, '\\' )) == NULL) {
1044 return NT_STATUS_NOT_FOUND;
1047 ppath++; /* Now pointing at path component. */
1049 newmount = talloc_asprintf(ctx, "%s\\%s", mountpt, ppath );
1050 if (!newmount) {
1051 return NT_STATUS_NOT_FOUND;
1054 cli_set_mntpoint(*targetcli, newmount);
1056 /* Check for another dfs referral, note that we are not
1057 checking for loops here. */
1059 if (!strequal(*pp_targetpath, "\\") && !strequal(*pp_targetpath, "/")) {
1060 status = cli_resolve_path(ctx,
1061 newmount,
1062 dfs_auth_info,
1063 *targetcli,
1064 *pp_targetpath,
1065 &newcli,
1066 &newpath);
1067 if (NT_STATUS_IS_OK(status)) {
1069 * When cli_resolve_path returns true here it's always
1070 * returning the complete path in newpath, so we're done
1071 * here.
1073 *targetcli = newcli;
1074 *pp_targetpath = newpath;
1075 return status;
1079 done:
1081 if (smbXcli_conn_protocol((*targetcli)->conn) >= PROTOCOL_SMB2_02) {
1082 target_tcon = (*targetcli)->smb2.tcon;
1083 } else {
1084 target_tcon = (*targetcli)->smb1.tcon;
1087 /* If returning true ensure we return a dfs root full path. */
1088 if (smbXcli_tcon_is_dfs_share(target_tcon)) {
1089 dfs_path = talloc_strdup(ctx, *pp_targetpath);
1090 if (!dfs_path) {
1091 return NT_STATUS_NO_MEMORY;
1093 *pp_targetpath = cli_dfs_make_full_path(ctx, *targetcli, dfs_path);
1094 if (*pp_targetpath == NULL) {
1095 return NT_STATUS_NO_MEMORY;
1099 return NT_STATUS_OK;
1102 /********************************************************************
1103 ********************************************************************/
1105 bool cli_check_msdfs_proxy(TALLOC_CTX *ctx,
1106 struct cli_state *cli,
1107 const char *sharename,
1108 char **pp_newserver,
1109 char **pp_newshare,
1110 bool force_encrypt,
1111 const char *username,
1112 const char *password,
1113 const char *domain)
1115 struct client_dfs_referral *refs = NULL;
1116 size_t num_refs = 0;
1117 size_t consumed = 0;
1118 char *fullpath = NULL;
1119 bool res;
1120 uint16 cnum;
1121 char *newextrapath = NULL;
1122 NTSTATUS status;
1123 const char *remote_name;
1125 if (!cli || !sharename) {
1126 return false;
1129 remote_name = smbXcli_conn_remote_name(cli->conn);
1130 cnum = cli_state_get_tid(cli);
1132 /* special case. never check for a referral on the IPC$ share */
1134 if (strequal(sharename, "IPC$")) {
1135 return false;
1138 /* send a trans2_query_path_info to check for a referral */
1140 fullpath = talloc_asprintf(ctx, "\\%s\\%s", remote_name, sharename);
1141 if (!fullpath) {
1142 return false;
1145 /* check for the referral */
1147 if (!NT_STATUS_IS_OK(cli_tree_connect(cli, "IPC$", "IPC", NULL, 0))) {
1148 return false;
1151 if (force_encrypt) {
1152 status = cli_cm_force_encryption(cli,
1153 username,
1154 password,
1155 lp_workgroup(),
1156 "IPC$");
1157 if (!NT_STATUS_IS_OK(status)) {
1158 return false;
1162 status = cli_dfs_get_referral(ctx, cli, fullpath, &refs,
1163 &num_refs, &consumed);
1164 res = NT_STATUS_IS_OK(status);
1166 status = cli_tdis(cli);
1167 if (!NT_STATUS_IS_OK(status)) {
1168 return false;
1171 cli_state_set_tid(cli, cnum);
1173 if (!res || !num_refs) {
1174 return false;
1177 if (!refs[0].dfspath) {
1178 return false;
1181 if (!split_dfs_path(ctx, refs[0].dfspath, pp_newserver,
1182 pp_newshare, &newextrapath)) {
1183 return false;
1186 /* check that this is not a self-referral */
1188 if (strequal(remote_name, *pp_newserver) &&
1189 strequal(sharename, *pp_newshare)) {
1190 return false;
1193 return true;