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
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/>.
24 /********************************************************************
27 DFS paths are *always* of the form \server\share\<pathname> (the \ characters
28 are not C escaped here).
30 - but if we're using POSIX paths then <pathname> may contain
31 '/' separators, not '\\' separators. So cope with '\\' or '/'
32 as a separator when looking at the pathname part.... JRA.
33 ********************************************************************/
35 struct client_connection {
36 struct client_connection *prev, *next;
37 struct cli_state *cli;
41 /* global state....globals reek! */
43 static pstring username;
44 static pstring password;
45 static bool use_kerberos;
47 static int signing_state;
48 int max_protocol = PROTOCOL_NT1;
51 static int name_type = 0x20;
53 static struct sockaddr_storage dest_ss;
55 static struct client_connection *connections;
57 /********************************************************************
58 Return a connection to a server.
59 ********************************************************************/
61 static struct cli_state *do_connect( const char *server, const char *share,
64 struct cli_state *c = NULL;
65 struct nmb_name called, calling;
67 struct sockaddr_storage ss;
70 fstring newserver, newshare;
73 /* make a copy so we don't modify the global string 'service' */
74 pstrcpy(servicename, share);
75 sharename = servicename;
76 if (*sharename == '\\') {
78 sharename = strchr_m(server,'\\');
79 if (!sharename) return NULL;
88 make_nmb_name(&calling, global_myname(), 0x0);
89 make_nmb_name(&called , server, name_type);
96 /* have to open a new connection */
97 if (!(c=cli_initialise()) || (cli_set_port(c, port) != port)) {
98 d_printf("Connection to %s failed\n", server_n);
101 status = cli_connect(c, server_n, &ss);
102 if (!NT_STATUS_IS_OK(status)) {
103 d_printf("Connection to %s failed (Error %s)\n", server_n, nt_errstr(status));
107 c->protocol = max_protocol;
108 c->use_kerberos = use_kerberos;
109 cli_setup_signing_state(c, signing_state);
112 if (!cli_session_request(c, &calling, &called)) {
114 d_printf("session request to %s failed (%s)\n",
115 called.name, cli_errstr(c));
118 if ((p=strchr_m(called.name, '.'))) {
122 if (strcmp(called.name, "*SMBSERVER")) {
123 make_nmb_name(&called , "*SMBSERVER", 0x20);
129 DEBUG(4,(" session request ok\n"));
131 if (!cli_negprot(c)) {
132 d_printf("protocol negotiation failed\n");
138 char *pass = getpass("Password: ");
140 pstrcpy(password, pass);
145 if (!NT_STATUS_IS_OK(cli_session_setup(c, username,
146 password, strlen(password),
147 password, strlen(password),
149 /* if a password was not supplied then try again with a null username */
150 if (password[0] || !username[0] || use_kerberos ||
151 !NT_STATUS_IS_OK(cli_session_setup(c, "", "", 0, "", 0,
153 d_printf("session setup failed: %s\n", cli_errstr(c));
154 if (NT_STATUS_V(cli_nt_error(c)) ==
155 NT_STATUS_V(NT_STATUS_MORE_PROCESSING_REQUIRED))
156 d_printf("did you forget to run kinit?\n");
160 d_printf("Anonymous login successful\n");
163 if ( show_sessetup ) {
164 if (*c->server_domain) {
165 DEBUG(0,("Domain=[%s] OS=[%s] Server=[%s]\n",
166 c->server_domain,c->server_os,c->server_type));
167 } else if (*c->server_os || *c->server_type){
168 DEBUG(0,("OS=[%s] Server=[%s]\n",
169 c->server_os,c->server_type));
172 DEBUG(4,(" session setup ok\n"));
174 /* here's the fun part....to support 'msdfs proxy' shares
175 (on Samba or windows) we have to issues a TRANS_GET_DFS_REFERRAL
176 here before trying to connect to the original share.
177 check_dfs_proxy() will fail if it is a normal share. */
179 if ( (c->capabilities & CAP_DFS) && cli_check_msdfs_proxy( c, sharename, newserver, newshare ) ) {
181 return do_connect( newserver, newshare, False );
184 /* must be a normal share */
186 if (!cli_send_tconX(c, sharename, "?????", password, strlen(password)+1)) {
187 d_printf("tree connect failed: %s\n", cli_errstr(c));
192 DEBUG(4,(" tconx ok\n"));
197 /****************************************************************************
198 ****************************************************************************/
200 static void cli_cm_set_mntpoint( struct cli_state *c, const char *mnt )
202 struct client_connection *p;
205 for ( p=connections,i=0; p; p=p->next,i++ ) {
206 if ( strequal(p->cli->desthost, c->desthost) && strequal(p->cli->share, c->share) )
211 char *name = clean_name(NULL, p->mount);
215 pstrcpy( p->mount, name );
220 /****************************************************************************
221 ****************************************************************************/
223 const char *cli_cm_get_mntpoint( struct cli_state *c )
225 struct client_connection *p;
228 for ( p=connections,i=0; p; p=p->next,i++ ) {
229 if ( strequal(p->cli->desthost, c->desthost) && strequal(p->cli->share, c->share) )
239 /********************************************************************
240 Add a new connection to the list
241 ********************************************************************/
243 static struct cli_state *cli_cm_connect( const char *server,
247 struct client_connection *node;
249 node = SMB_XMALLOC_P( struct client_connection );
251 node->cli = do_connect( server, share, show_hdr );
258 DLIST_ADD( connections, node );
260 cli_cm_set_mntpoint( node->cli, "" );
266 /********************************************************************
267 Return a connection to a server.
268 ********************************************************************/
270 static struct cli_state *cli_cm_find( const char *server, const char *share )
272 struct client_connection *p;
274 for ( p=connections; p; p=p->next ) {
275 if ( strequal(server, p->cli->desthost) && strequal(share,p->cli->share) )
282 /****************************************************************************
283 open a client connection to a \\server\share. Set's the current *cli
284 global variable as a side-effect (but only if the connection is successful).
285 ****************************************************************************/
287 struct cli_state *cli_cm_open(const char *server,
293 /* try to reuse an existing connection */
295 c = cli_cm_find( server, share );
298 c = cli_cm_connect(server, share, show_hdr);
304 /****************************************************************************
305 ****************************************************************************/
307 void cli_cm_shutdown( void )
310 struct client_connection *p, *x;
312 for ( p=connections; p; ) {
313 cli_shutdown( p->cli );
324 /****************************************************************************
325 ****************************************************************************/
327 void cli_cm_display(void)
329 struct client_connection *p;
332 for ( p=connections,i=0; p; p=p->next,i++ ) {
333 d_printf("%d:\tserver=%s, share=%s\n",
334 i, p->cli->desthost, p->cli->share );
338 /****************************************************************************
339 ****************************************************************************/
341 void cli_cm_set_credentials( struct user_auth_info *user )
343 pstrcpy( username, user->username );
345 if ( user->got_pass ) {
346 pstrcpy( password, user->password );
350 use_kerberos = user->use_kerberos;
351 signing_state = user->signing_state;
354 /****************************************************************************
355 ****************************************************************************/
357 void cli_cm_set_port( int port_number )
362 /****************************************************************************
363 ****************************************************************************/
365 void cli_cm_set_dest_name_type( int type )
370 /****************************************************************************
371 ****************************************************************************/
373 void cli_cm_set_dest_ss(struct sockaddr_storage *pss)
379 /**********************************************************************
380 split a dfs path into the server, share name, and extrapath components
381 **********************************************************************/
383 static void split_dfs_path( const char *nodepath, fstring server, fstring share, pstring extrapath )
388 pstrcpy( path, nodepath );
390 if ( path[0] != '\\' ) {
394 p = strchr_m( path + 1, '\\' );
402 /* Look for any extra/deep path */
403 q = strchr_m(p, '\\');
407 pstrcpy( extrapath, q );
409 pstrcpy( extrapath, '\0' );
413 fstrcpy( server, &path[1] );
416 /****************************************************************************
417 Return the original path truncated at the directory component before
418 the first wildcard character. Trust the caller to provide a NULL
420 ****************************************************************************/
422 static void clean_path(const char *path, pstring path_out)
427 /* No absolute paths. */
428 while (IS_DIRECTORY_SEP(*path)) {
432 pstrcpy(path_out, path);
434 p1 = strchr_m(path_out, '*');
435 p2 = strchr_m(path_out, '?');
447 /* Now go back to the start of this component. */
448 p1 = strrchr_m(path_out, '/');
449 p2 = strrchr_m(path_out, '\\');
456 /* Strip any trailing separator */
458 len = strlen(path_out);
459 if ( (len > 0) && IS_DIRECTORY_SEP(path_out[len-1])) {
460 path_out[len-1] = '\0';
464 /****************************************************************************
465 ****************************************************************************/
467 static void cli_dfs_make_full_path( struct cli_state *cli,
471 /* Ensure the extrapath doesn't start with a separator. */
472 while (IS_DIRECTORY_SEP(*dir)) {
476 pstr_sprintf( path_out, "\\%s\\%s\\%s", cli->desthost, cli->share, dir);
479 /********************************************************************
480 check for dfs referral
481 ********************************************************************/
483 static bool cli_dfs_check_error( struct cli_state *cli, NTSTATUS status )
485 uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
487 /* only deal with DS when we negotiated NT_STATUS codes and UNICODE */
489 if ( !( (flgs2&FLAGS2_32_BIT_ERROR_CODES) && (flgs2&FLAGS2_UNICODE_STRINGS) ) )
492 if ( NT_STATUS_EQUAL( status, NT_STATUS(IVAL(cli->inbuf,smb_rcls)) ) )
498 /********************************************************************
499 get the dfs referral link
500 ********************************************************************/
502 bool cli_dfs_get_referral( struct cli_state *cli,
504 CLIENT_DFS_REFERRAL**refs,
508 unsigned int data_len = 0;
509 unsigned int param_len = 0;
510 uint16 setup = TRANSACT2_GET_DFS_REFERRAL;
511 char param[sizeof(pstring)+2];
513 char *rparam=NULL, *rdata=NULL;
515 size_t pathlen = 2*(strlen(path)+1);
516 uint16 num_referrals;
517 CLIENT_DFS_REFERRAL *referrals = NULL;
519 memset(param, 0, sizeof(param));
520 SSVAL(param, 0, 0x03); /* max referral level */
523 p += clistr_push(cli, p, path, MIN(pathlen, sizeof(param)-2), STR_TERMINATE);
524 param_len = PTR_DIFF(p, param);
526 if (!cli_send_trans(cli, SMBtrans2,
528 -1, 0, /* fid, flags */
529 &setup, 1, 0, /* setup, length, max */
530 param, param_len, 2, /* param, length, max */
531 (char *)&data, data_len, cli->max_xmit /* data, length, max */
536 if (!cli_receive_trans(cli, SMBtrans2,
538 &rdata, &data_len)) {
542 *consumed = SVAL( rdata, 0 );
543 num_referrals = SVAL( rdata, 2 );
545 if ( num_referrals != 0 ) {
551 referrals = SMB_XMALLOC_ARRAY( CLIENT_DFS_REFERRAL, num_referrals );
553 /* start at the referrals array */
556 for ( i=0; i<num_referrals; i++ ) {
557 ref_version = SVAL( p, 0 );
558 ref_size = SVAL( p, 2 );
559 node_offset = SVAL( p, 16 );
561 if ( ref_version != 3 ) {
566 referrals[i].proximity = SVAL( p, 8 );
567 referrals[i].ttl = SVAL( p, 10 );
569 clistr_pull( cli, referrals[i].dfspath, p+node_offset,
570 sizeof(referrals[i].dfspath), -1, STR_TERMINATE|STR_UNICODE );
576 *num_refs = num_referrals;
586 /********************************************************************
587 ********************************************************************/
589 bool cli_resolve_path( const char *mountpt,
590 struct cli_state *rootcli,
592 struct cli_state **targetcli,
595 CLIENT_DFS_REFERRAL *refs = NULL;
598 struct cli_state *cli_ipc;
599 pstring dfs_path, cleanpath, extrapath;
601 fstring server, share;
602 struct cli_state *newcli;
605 char *ppath, *temppath = NULL;
607 SMB_STRUCT_STAT sbuf;
610 if ( !rootcli || !path || !targetcli ) {
614 /* Don't do anything if this is not a DFS root. */
616 if ( !rootcli->dfsroot) {
617 *targetcli = rootcli;
618 pstrcpy( targetpath, path );
624 /* Send a trans2_query_path_info to check for a referral. */
626 clean_path(path, cleanpath);
627 cli_dfs_make_full_path(rootcli, cleanpath, dfs_path );
629 if (cli_qpathinfo_basic( rootcli, dfs_path, &sbuf, &attributes ) ) {
630 /* This is an ordinary path, just return it. */
631 *targetcli = rootcli;
632 pstrcpy( targetpath, path );
636 /* Special case where client asked for a path that does not exist */
638 if ( cli_dfs_check_error(rootcli, NT_STATUS_OBJECT_NAME_NOT_FOUND) ) {
639 *targetcli = rootcli;
640 pstrcpy( targetpath, path );
644 /* We got an error, check for DFS referral. */
646 if ( !cli_dfs_check_error(rootcli, NT_STATUS_PATH_NOT_COVERED)) {
650 /* Check for the referral. */
652 if ( !(cli_ipc = cli_cm_open( rootcli->desthost, "IPC$", False )) ) {
656 if ( !cli_dfs_get_referral(cli_ipc, dfs_path, &refs, &num_refs, &consumed)
661 /* Just store the first referral for now. */
663 split_dfs_path( refs[0].dfspath, server, share, extrapath );
666 /* Make sure to recreate the original string including any wildcards. */
668 cli_dfs_make_full_path( rootcli, path, dfs_path);
669 pathlen = strlen( dfs_path )*2;
670 consumed = MIN(pathlen, consumed );
671 pstrcpy( targetpath, &dfs_path[consumed/2] );
672 dfs_path[consumed/2] = '\0';
675 * targetpath is now the unconsumed part of the path.
676 * dfs_path is now the consumed part of the path (in \server\share\path format).
679 /* Open the connection to the target server & share */
681 if ( (*targetcli = cli_cm_open(server, share, False)) == NULL ) {
682 d_printf("Unable to follow dfs referral [\\%s\\%s]\n",
687 if (strlen(extrapath) > 0) {
688 string_append(&temppath, extrapath);
689 string_append(&temppath, targetpath);
690 pstrcpy( targetpath, temppath );
693 /* parse out the consumed mount path */
694 /* trim off the \server\share\ */
698 if (*ppath != '\\') {
699 d_printf("cli_resolve_path: dfs_path (%s) not in correct format.\n",
704 ppath++; /* Now pointing at start of server name. */
706 if ((ppath = strchr_m( dfs_path, '\\' )) == NULL) {
710 ppath++; /* Now pointing at start of share name. */
712 if ((ppath = strchr_m( ppath+1, '\\' )) == NULL) {
716 ppath++; /* Now pointing at path component. */
718 pstr_sprintf( newmount, "%s\\%s", mountpt, ppath );
720 cli_cm_set_mntpoint( *targetcli, newmount );
722 /* Check for another dfs referral, note that we are not
723 checking for loops here. */
725 if ( !strequal( targetpath, "\\" ) && !strequal( targetpath, "/")) {
726 if ( cli_resolve_path( newmount, *targetcli, targetpath, &newcli, newpath ) ) {
728 * When cli_resolve_path returns true here it's always
729 * returning the complete path in newpath, so we're done
733 pstrcpy( targetpath, newpath );
740 /* If returning True ensure we return a dfs root full path. */
741 if ( (*targetcli)->dfsroot ) {
742 pstrcpy(dfs_path, targetpath );
743 cli_dfs_make_full_path( *targetcli, dfs_path, targetpath);
749 /********************************************************************
750 ********************************************************************/
752 bool cli_check_msdfs_proxy( struct cli_state *cli, const char *sharename,
753 fstring newserver, fstring newshare )
755 CLIENT_DFS_REFERRAL *refs = NULL;
761 pstring newextrapath;
763 if ( !cli || !sharename )
768 /* special case. never check for a referral on the IPC$ share */
770 if ( strequal( sharename, "IPC$" ) ) {
774 /* send a trans2_query_path_info to check for a referral */
776 pstr_sprintf( fullpath, "\\%s\\%s", cli->desthost, sharename );
778 /* check for the referral */
780 if (!cli_send_tconX(cli, "IPC$", "IPC", NULL, 0)) {
784 res = cli_dfs_get_referral(cli, fullpath, &refs, &num_refs, &consumed);
786 if (!cli_tdis(cli)) {
793 if (!res || !num_refs ) {
798 split_dfs_path( refs[0].dfspath, newserver, newshare, newextrapath );
800 /* check that this is not a self-referral */
802 if ( strequal( cli->desthost, newserver ) && strequal( sharename, newshare ) ) {