2 Unix SMB/CIFS implementation.
3 client connect/disconnect routines
4 Copyright (C) Andrew Tridgell 1994-1998
5 Copyright (C) Gerald (Jerry) Carter 2004
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 2 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, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
27 struct client_connection
{
28 struct client_connection
*prev
, *next
;
29 struct cli_state
*cli
;
33 /* global state....globals reek! */
35 static pstring username
;
36 static pstring password
;
37 static BOOL use_kerberos
;
39 static int signing_state
;
40 int max_protocol
= PROTOCOL_NT1
;
43 static int name_type
= 0x20;
45 static struct in_addr dest_ip
;
47 static struct client_connection
*connections
;
49 /********************************************************************
50 Return a connection to a server.
51 ********************************************************************/
53 static struct cli_state
*do_connect( const char *server
, const char *share
,
57 struct nmb_name called
, calling
;
62 fstring newserver
, newshare
;
64 /* make a copy so we don't modify the global string 'service' */
65 pstrcpy(servicename
, share
);
66 sharename
= servicename
;
67 if (*sharename
== '\\') {
69 sharename
= strchr_m(server
,'\\');
70 if (!sharename
) return NULL
;
79 make_nmb_name(&calling
, global_myname(), 0x0);
80 make_nmb_name(&called
, server
, name_type
);
87 /* have to open a new connection */
88 if (!(c
=cli_initialise(NULL
)) || (cli_set_port(c
, port
) != port
) ||
89 !cli_connect(c
, server_n
, &ip
)) {
90 d_printf("Connection to %s failed\n", server_n
);
94 c
->protocol
= max_protocol
;
95 c
->use_kerberos
= use_kerberos
;
96 cli_setup_signing_state(c
, signing_state
);
99 if (!cli_session_request(c
, &calling
, &called
)) {
101 d_printf("session request to %s failed (%s)\n",
102 called
.name
, cli_errstr(c
));
104 if ((p
=strchr_m(called
.name
, '.'))) {
108 if (strcmp(called
.name
, "*SMBSERVER")) {
109 make_nmb_name(&called
, "*SMBSERVER", 0x20);
115 DEBUG(4,(" session request ok\n"));
117 if (!cli_negprot(c
)) {
118 d_printf("protocol negotiation failed\n");
124 char *pass
= getpass("Password: ");
126 pstrcpy(password
, pass
);
131 if (!cli_session_setup(c
, username
,
132 password
, strlen(password
),
133 password
, strlen(password
),
135 /* if a password was not supplied then try again with a null username */
136 if (password
[0] || !username
[0] || use_kerberos
||
137 !cli_session_setup(c
, "", "", 0, "", 0, lp_workgroup())) {
138 d_printf("session setup failed: %s\n", cli_errstr(c
));
139 if (NT_STATUS_V(cli_nt_error(c
)) ==
140 NT_STATUS_V(NT_STATUS_MORE_PROCESSING_REQUIRED
))
141 d_printf("did you forget to run kinit?\n");
145 d_printf("Anonymous login successful\n");
148 if ( show_sessetup
) {
149 if (*c
->server_domain
) {
150 DEBUG(0,("Domain=[%s] OS=[%s] Server=[%s]\n",
151 c
->server_domain
,c
->server_os
,c
->server_type
));
152 } else if (*c
->server_os
|| *c
->server_type
){
153 DEBUG(0,("OS=[%s] Server=[%s]\n",
154 c
->server_os
,c
->server_type
));
157 DEBUG(4,(" session setup ok\n"));
159 /* here's the fun part....to support 'msdfs proxy' shares
160 (on Samba or windows) we have to issues a TRANS_GET_DFS_REFERRAL
161 here before trying to connect to the original share.
162 check_dfs_proxy() will fail if it is a normal share. */
164 if ( cli_check_msdfs_proxy( c
, sharename
, newserver
, newshare
) ) {
166 return do_connect( newserver
, newshare
, False
);
169 /* must be a normal share */
171 if (!cli_send_tconX(c
, sharename
, "?????", password
, strlen(password
)+1)) {
172 d_printf("tree connect failed: %s\n", cli_errstr(c
));
177 DEBUG(4,(" tconx ok\n"));
182 /****************************************************************************
183 ****************************************************************************/
185 static void cli_cm_set_mntpoint( struct cli_state
*c
, const char *mnt
)
187 struct client_connection
*p
;
190 for ( p
=connections
,i
=0; p
; p
=p
->next
,i
++ ) {
191 if ( strequal(p
->cli
->desthost
, c
->desthost
) && strequal(p
->cli
->share
, c
->share
) )
196 pstrcpy( p
->mount
, mnt
);
197 dos_clean_name( p
->mount
);
201 /****************************************************************************
202 ****************************************************************************/
204 const char * cli_cm_get_mntpoint( struct cli_state
*c
)
206 struct client_connection
*p
;
209 for ( p
=connections
,i
=0; p
; p
=p
->next
,i
++ ) {
210 if ( strequal(p
->cli
->desthost
, c
->desthost
) && strequal(p
->cli
->share
, c
->share
) )
220 /********************************************************************
221 Add a new connection to the list
222 ********************************************************************/
224 static struct cli_state
* cli_cm_connect( const char *server
, const char *share
,
227 struct client_connection
*node
;
229 node
= SMB_XMALLOC_P( struct client_connection
);
231 node
->cli
= do_connect( server
, share
, show_hdr
);
238 DLIST_ADD( connections
, node
);
240 cli_cm_set_mntpoint( node
->cli
, "" );
246 /********************************************************************
247 Return a connection to a server.
248 ********************************************************************/
250 static struct cli_state
* cli_cm_find( const char *server
, const char *share
)
252 struct client_connection
*p
;
254 for ( p
=connections
; p
; p
=p
->next
) {
255 if ( strequal(server
, p
->cli
->desthost
) && strequal(share
,p
->cli
->share
) )
262 /****************************************************************************
263 open a client connection to a \\server\share. Set's the current *cli
264 global variable as a side-effect (but only if the connection is successful).
265 ****************************************************************************/
267 struct cli_state
* cli_cm_open( const char *server
, const char *share
, BOOL show_hdr
)
271 /* try to reuse an existing connection */
273 c
= cli_cm_find( server
, share
);
276 c
= cli_cm_connect( server
, share
, show_hdr
);
281 /****************************************************************************
282 ****************************************************************************/
284 void cli_cm_shutdown( void )
287 struct client_connection
*p
, *x
;
289 for ( p
=connections
; p
; ) {
290 cli_shutdown( p
->cli
);
302 /****************************************************************************
303 ****************************************************************************/
305 void cli_cm_display(void)
307 struct client_connection
*p
;
310 for ( p
=connections
,i
=0; p
; p
=p
->next
,i
++ ) {
311 d_printf("%d:\tserver=%s, share=%s\n",
312 i
, p
->cli
->desthost
, p
->cli
->share
);
316 /****************************************************************************
317 ****************************************************************************/
319 void cli_cm_set_credentials( struct user_auth_info
*user
)
321 pstrcpy( username
, user
->username
);
323 if ( user
->got_pass
) {
324 pstrcpy( password
, user
->password
);
328 use_kerberos
= user
->use_kerberos
;
329 signing_state
= user
->signing_state
;
332 /****************************************************************************
333 ****************************************************************************/
335 void cli_cm_set_port( int port_number
)
340 /****************************************************************************
341 ****************************************************************************/
343 void cli_cm_set_dest_name_type( int type
)
348 /****************************************************************************
349 ****************************************************************************/
351 void cli_cm_set_dest_ip(struct in_addr ip
)
357 /********************************************************************
358 split a dfs path into the server and share name components
359 ********************************************************************/
361 static void split_dfs_path( const char *nodepath
, fstring server
, fstring share
)
366 pstrcpy( path
, nodepath
);
368 if ( path
[0] != '\\' )
371 p
= strrchr_m( path
, '\\' );
380 fstrcpy( server
, &path
[1] );
383 /****************************************************************************
384 return the original path truncated at the first wildcard character
385 (also strips trailing \'s). Trust the caller to provide a NULL
387 ****************************************************************************/
389 static void clean_path( pstring clean
, const char *path
)
395 pstrcpy( newpath
, path
);
399 /* first check for '*' */
401 p
= strrchr_m( newpath
, '*' );
408 /* first check for '?' */
410 p
= strrchr_m( newpath
, '?' );
417 /* strip a trailing backslash */
419 len
= strlen( newpath
);
420 if ( newpath
[len
-1] == '\\' )
421 newpath
[len
-1] = '\0';
423 pstrcpy( clean
, newpath
);
426 /****************************************************************************
427 ****************************************************************************/
429 BOOL
cli_dfs_make_full_path( pstring path
, const char *server
, const char *share
,
434 const char *directory
;
437 /* make a copy so we don't modify the global string 'service' */
439 pstrcpy(servicename
, share
);
440 sharename
= servicename
;
442 if (*sharename
== '\\') {
444 server
= sharename
+2;
445 sharename
= strchr_m(server
,'\\');
455 if ( *directory
== '\\' )
458 pstr_sprintf( path
, "\\%s\\%s\\%s", server
, sharename
, directory
);
463 /********************************************************************
464 check for dfs referral
465 ********************************************************************/
467 static BOOL
cli_dfs_check_error( struct cli_state
*cli
, NTSTATUS status
)
469 uint32 flgs2
= SVAL(cli
->inbuf
,smb_flg2
);
471 /* only deal with DS when we negotiated NT_STATUS codes and UNICODE */
473 if ( !( (flgs2
&FLAGS2_32_BIT_ERROR_CODES
) && (flgs2
&FLAGS2_UNICODE_STRINGS
) ) )
476 if ( NT_STATUS_EQUAL( status
, NT_STATUS(IVAL(cli
->inbuf
,smb_rcls
)) ) )
482 /********************************************************************
483 get the dfs referral link
484 ********************************************************************/
486 BOOL
cli_dfs_get_referral( struct cli_state
*cli
, const char *path
,
487 CLIENT_DFS_REFERRAL
**refs
, size_t *num_refs
,
490 unsigned int data_len
= 0;
491 unsigned int param_len
= 0;
492 uint16 setup
= TRANSACT2_GET_DFS_REFERRAL
;
493 char param
[sizeof(pstring
)+2];
495 char *rparam
=NULL
, *rdata
=NULL
;
497 size_t pathlen
= 2*(strlen(path
)+1);
498 uint16 num_referrals
;
499 CLIENT_DFS_REFERRAL
*referrals
= NULL
;
501 memset(param
, 0, sizeof(param
));
502 SSVAL(param
, 0, 0x03); /* max referral level */
505 p
+= clistr_push(cli
, p
, path
, MIN(pathlen
, sizeof(param
)-2), STR_TERMINATE
);
506 param_len
= PTR_DIFF(p
, param
);
508 if (!cli_send_trans(cli
, SMBtrans2
,
510 -1, 0, /* fid, flags */
511 &setup
, 1, 0, /* setup, length, max */
512 param
, param_len
, 2, /* param, length, max */
513 (char *)&data
, data_len
, cli
->max_xmit
/* data, length, max */
518 if (!cli_receive_trans(cli
, SMBtrans2
,
520 &rdata
, &data_len
)) {
524 *consumed
= SVAL( rdata
, 0 );
525 num_referrals
= SVAL( rdata
, 2 );
527 if ( num_referrals
!= 0 ) {
534 referrals
= SMB_XMALLOC_ARRAY( CLIENT_DFS_REFERRAL
, num_referrals
);
536 /* start at the referrals array */
539 for ( i
=0; i
<num_referrals
; i
++ ) {
540 ref_version
= SVAL( p
, 0 );
541 ref_size
= SVAL( p
, 2 );
542 node_offset
= SVAL( p
, 16 );
544 if ( ref_version
!= 3 ) {
549 referrals
[i
].proximity
= SVAL( p
, 8 );
550 referrals
[i
].ttl
= SVAL( p
, 10 );
552 clistr_pull( cli
, referrals
[i
].dfspath
, p
+node_offset
,
553 sizeof(referrals
[i
].dfspath
), -1, STR_TERMINATE
|STR_UNICODE
);
560 *num_refs
= num_referrals
;
569 /********************************************************************
570 ********************************************************************/
572 BOOL
cli_resolve_path( const char *mountpt
, struct cli_state
*rootcli
, const char *path
,
573 struct cli_state
**targetcli
, pstring targetpath
)
575 CLIENT_DFS_REFERRAL
*refs
= NULL
;
578 struct cli_state
*cli_ipc
;
579 pstring fullpath
, cleanpath
;
581 fstring server
, share
;
582 struct cli_state
*newcli
;
587 SMB_STRUCT_STAT sbuf
;
592 if ( !rootcli
|| !path
|| !targetcli
)
595 /* send a trans2_query_path_info to check for a referral */
597 clean_path( cleanpath
, path
);
598 cli_dfs_make_full_path( fullpath
, rootcli
->desthost
, rootcli
->share
, cleanpath
);
600 /* don't bother continuing if this is not a dfs root */
602 if ( !rootcli
->dfsroot
|| cli_qpathinfo_basic( rootcli
, cleanpath
, &sbuf
, &attributes
) ) {
603 *targetcli
= rootcli
;
604 pstrcpy( targetpath
, path
);
608 /* special case where client asked for a path that does not exist */
610 if ( cli_dfs_check_error(rootcli
, NT_STATUS_OBJECT_NAME_NOT_FOUND
) ) {
611 *targetcli
= rootcli
;
612 pstrcpy( targetpath
, path
);
616 /* we got an error, check for DFS referral */
618 if ( !cli_dfs_check_error(rootcli
, NT_STATUS_PATH_NOT_COVERED
) )
621 /* check for the referral */
623 if ( !(cli_ipc
= cli_cm_open( rootcli
->desthost
, "IPC$", False
)) )
626 if ( !cli_dfs_get_referral(cli_ipc
, fullpath
, &refs
, &num_refs
, &consumed
)
632 /* just store the first referral for now
633 Make sure to recreate the original string including any wildcards */
635 cli_dfs_make_full_path( fullpath
, rootcli
->desthost
, rootcli
->share
, path
);
636 pathlen
= strlen( fullpath
)*2;
637 consumed
= MIN(pathlen
, consumed
);
638 pstrcpy( targetpath
, &fullpath
[consumed
/2] );
640 split_dfs_path( refs
[0].dfspath
, server
, share
);
643 /* open the connection to the target path */
645 if ( (*targetcli
= cli_cm_open(server
, share
, False
)) == NULL
) {
646 d_printf("Unable to follow dfs referral [//%s/%s]\n",
652 /* parse out the consumed mount path */
653 /* trim off the \server\share\ */
655 fullpath
[consumed
/2] = '\0';
656 dos_clean_name( fullpath
);
657 ppath
= strchr_m( fullpath
, '\\' );
658 ppath
= strchr_m( ppath
+1, '\\' );
659 ppath
= strchr_m( ppath
+1, '\\' );
662 pstr_sprintf( newmount
, "%s\\%s", mountpt
, ppath
);
663 cli_cm_set_mntpoint( *targetcli
, newmount
);
665 /* check for another dfs referral, note that we are not
666 checking for loops here */
668 if ( !strequal( targetpath
, "\\" ) ) {
669 if ( cli_resolve_path( newmount
, *targetcli
, targetpath
, &newcli
, newpath
) ) {
671 pstrcpy( targetpath
, newpath
);
678 /********************************************************************
679 ********************************************************************/
681 BOOL
cli_check_msdfs_proxy( struct cli_state
*cli
, const char *sharename
,
682 fstring newserver
, fstring newshare
)
684 CLIENT_DFS_REFERRAL
*refs
= NULL
;
687 struct cli_state
*cli_ipc
;
690 if ( !cli
|| !sharename
)
693 /* special case. never check for a referral on the IPC$ share */
695 if ( strequal( sharename
, "IPC$" ) )
698 /* send a trans2_query_path_info to check for a referral */
700 pstr_sprintf( fullpath
, "\\%s\\%s", cli
->desthost
, sharename
);
702 /* check for the referral */
704 if ( !(cli_ipc
= cli_cm_open( cli
->desthost
, "IPC$", False
)) )
707 if ( !cli_dfs_get_referral(cli_ipc
, fullpath
, &refs
, &num_refs
, &consumed
)
713 split_dfs_path( refs
[0].dfspath
, newserver
, newshare
);
715 /* check that this is not a self-referral */
717 if ( strequal( cli
->desthost
, newserver
) && strequal( sharename
, newshare
) )