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.
25 struct client_connection {
26 struct client_connection *prev, *next;
27 struct cli_state *cli;
31 /* global state....globals reek! */
33 static pstring username;
34 static pstring password;
35 static BOOL use_kerberos;
37 static int signing_state;
38 int max_protocol = PROTOCOL_NT1;
41 static int name_type = 0x20;
43 static struct in_addr dest_ip;
45 static struct client_connection *connections;
47 /********************************************************************
48 Return a connection to a server.
49 ********************************************************************/
51 static struct cli_state *do_connect( const char *server, const char *share,
54 struct cli_state *c = NULL;
55 struct nmb_name called, calling;
60 fstring newserver, newshare;
62 /* make a copy so we don't modify the global string 'service' */
63 pstrcpy(servicename, share);
64 sharename = servicename;
65 if (*sharename == '\\') {
67 sharename = strchr_m(server,'\\');
68 if (!sharename) return NULL;
77 make_nmb_name(&calling, global_myname(), 0x0);
78 make_nmb_name(&called , server, name_type);
85 /* have to open a new connection */
86 if (!(c=cli_initialise()) || (cli_set_port(c, port) != port) ||
87 !cli_connect(c, server_n, &ip)) {
88 d_printf("Connection to %s failed\n", server_n);
92 c->protocol = max_protocol;
93 c->use_kerberos = use_kerberos;
94 cli_setup_signing_state(c, signing_state);
97 if (!cli_session_request(c, &calling, &called)) {
99 d_printf("session request to %s failed (%s)\n",
100 called.name, cli_errstr(c));
103 if ((p=strchr_m(called.name, '.'))) {
107 if (strcmp(called.name, "*SMBSERVER")) {
108 make_nmb_name(&called , "*SMBSERVER", 0x20);
114 DEBUG(4,(" session request ok\n"));
116 if (!cli_negprot(c)) {
117 d_printf("protocol negotiation failed\n");
123 char *pass = getpass("Password: ");
125 pstrcpy(password, pass);
130 if (!NT_STATUS_IS_OK(cli_session_setup(c, username,
131 password, strlen(password),
132 password, strlen(password),
134 /* if a password was not supplied then try again with a null username */
135 if (password[0] || !username[0] || use_kerberos ||
136 !NT_STATUS_IS_OK(cli_session_setup(c, "", "", 0, "", 0,
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 ( (c->capabilities & CAP_DFS) && 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, share name, and extrapath components
359 **********************************************************************/
361 static void split_dfs_path( const char *nodepath, fstring server, fstring share, fstring extrapath )
366 pstrcpy( path, nodepath );
368 if ( path[0] != '\\' )
371 p = strchr_m( path + 1, '\\' );
379 /* Look for any extra/deep path */
380 q = strchr_m(p, '\\');
384 fstrcpy( extrapath, q );
386 fstrcpy( extrapath, '\0' );
390 fstrcpy( server, &path[1] );
393 /****************************************************************************
394 return the original path truncated at the first wildcard character
395 (also strips trailing \'s). Trust the caller to provide a NULL
397 ****************************************************************************/
399 static void clean_path( pstring clean, const char *path )
405 pstrcpy( newpath, path );
409 /* first check for '*' */
411 p = strrchr_m( newpath, '*' );
418 /* first check for '?' */
420 p = strrchr_m( newpath, '?' );
427 /* strip a trailing backslash */
429 len = strlen( newpath );
430 if ( (len > 0) && (newpath[len-1] == '\\') )
431 newpath[len-1] = '\0';
433 pstrcpy( clean, newpath );
436 /****************************************************************************
437 ****************************************************************************/
439 BOOL cli_dfs_make_full_path( pstring path, const char *server, const char *share,
444 const char *directory;
447 /* make a copy so we don't modify the global string 'service' */
449 pstrcpy(servicename, share);
450 sharename = servicename;
452 if (*sharename == '\\') {
454 server = sharename+2;
455 sharename = strchr_m(server,'\\');
465 if ( *directory == '\\' )
468 pstr_sprintf( path, "\\%s\\%s\\%s", server, sharename, directory );
473 /********************************************************************
474 check for dfs referral
475 ********************************************************************/
477 static BOOL cli_dfs_check_error( struct cli_state *cli, NTSTATUS status )
479 uint32 flgs2 = SVAL(cli->inbuf,smb_flg2);
481 /* only deal with DS when we negotiated NT_STATUS codes and UNICODE */
483 if ( !( (flgs2&FLAGS2_32_BIT_ERROR_CODES) && (flgs2&FLAGS2_UNICODE_STRINGS) ) )
486 if ( NT_STATUS_EQUAL( status, NT_STATUS(IVAL(cli->inbuf,smb_rcls)) ) )
492 /********************************************************************
493 get the dfs referral link
494 ********************************************************************/
496 BOOL cli_dfs_get_referral( struct cli_state *cli, const char *path,
497 CLIENT_DFS_REFERRAL**refs, size_t *num_refs,
500 unsigned int data_len = 0;
501 unsigned int param_len = 0;
502 uint16 setup = TRANSACT2_GET_DFS_REFERRAL;
503 char param[sizeof(pstring)+2];
505 char *rparam=NULL, *rdata=NULL;
507 size_t pathlen = 2*(strlen(path)+1);
508 uint16 num_referrals;
509 CLIENT_DFS_REFERRAL *referrals = NULL;
511 memset(param, 0, sizeof(param));
512 SSVAL(param, 0, 0x03); /* max referral level */
515 p += clistr_push(cli, p, path, MIN(pathlen, sizeof(param)-2), STR_TERMINATE);
516 param_len = PTR_DIFF(p, param);
518 if (!cli_send_trans(cli, SMBtrans2,
520 -1, 0, /* fid, flags */
521 &setup, 1, 0, /* setup, length, max */
522 param, param_len, 2, /* param, length, max */
523 (char *)&data, data_len, cli->max_xmit /* data, length, max */
528 if (!cli_receive_trans(cli, SMBtrans2,
530 &rdata, &data_len)) {
534 *consumed = SVAL( rdata, 0 );
535 num_referrals = SVAL( rdata, 2 );
537 if ( num_referrals != 0 ) {
544 referrals = SMB_XMALLOC_ARRAY( CLIENT_DFS_REFERRAL, num_referrals );
546 /* start at the referrals array */
549 for ( i=0; i<num_referrals; i++ ) {
550 ref_version = SVAL( p, 0 );
551 ref_size = SVAL( p, 2 );
552 node_offset = SVAL( p, 16 );
554 if ( ref_version != 3 ) {
559 referrals[i].proximity = SVAL( p, 8 );
560 referrals[i].ttl = SVAL( p, 10 );
562 clistr_pull( cli, referrals[i].dfspath, p+node_offset,
563 sizeof(referrals[i].dfspath), -1, STR_TERMINATE|STR_UNICODE );
570 *num_refs = num_referrals;
579 /********************************************************************
580 ********************************************************************/
582 BOOL cli_resolve_path( const char *mountpt, struct cli_state *rootcli, const char *path,
583 struct cli_state **targetcli, pstring targetpath )
585 CLIENT_DFS_REFERRAL *refs = NULL;
588 struct cli_state *cli_ipc;
589 pstring fullpath, cleanpath, extrapath;
591 fstring server, share;
592 struct cli_state *newcli;
595 char *ppath, *temppath = NULL;
597 SMB_STRUCT_STAT sbuf;
600 if ( !rootcli || !path || !targetcli )
605 /* send a trans2_query_path_info to check for a referral */
607 clean_path( cleanpath, path );
608 cli_dfs_make_full_path( fullpath, rootcli->desthost, rootcli->share, cleanpath );
610 /* don't bother continuing if this is not a dfs root */
612 if ( !rootcli->dfsroot || cli_qpathinfo_basic( rootcli, cleanpath, &sbuf, &attributes ) ) {
613 *targetcli = rootcli;
614 pstrcpy( targetpath, path );
618 /* special case where client asked for a path that does not exist */
620 if ( cli_dfs_check_error(rootcli, NT_STATUS_OBJECT_NAME_NOT_FOUND) ) {
621 *targetcli = rootcli;
622 pstrcpy( targetpath, path );
626 /* we got an error, check for DFS referral */
628 if ( !cli_dfs_check_error(rootcli, NT_STATUS_PATH_NOT_COVERED) )
631 /* check for the referral */
633 if ( !(cli_ipc = cli_cm_open( rootcli->desthost, "IPC$", False )) )
636 if ( !cli_dfs_get_referral(cli_ipc, fullpath, &refs, &num_refs, &consumed)
642 /* just store the first referral for now
643 Make sure to recreate the original string including any wildcards */
645 cli_dfs_make_full_path( fullpath, rootcli->desthost, rootcli->share, path );
646 pathlen = strlen( fullpath )*2;
647 consumed = MIN(pathlen, consumed );
648 pstrcpy( targetpath, &fullpath[consumed/2] );
650 split_dfs_path( refs[0].dfspath, server, share, extrapath );
653 if (strlen(extrapath) > 0) {
654 string_append(&temppath, extrapath);
655 string_append(&temppath, targetpath);
656 pstrcpy( targetpath, temppath );
659 /* open the connection to the target path */
661 if ( (*targetcli = cli_cm_open(server, share, False)) == NULL ) {
662 d_printf("Unable to follow dfs referral [//%s/%s]\n",
668 /* parse out the consumed mount path */
669 /* trim off the \server\share\ */
671 fullpath[consumed/2] = '\0';
672 dos_clean_name( fullpath );
673 if ((ppath = strchr_m( fullpath, '\\' )) == NULL)
675 if ((ppath = strchr_m( ppath+1, '\\' )) == NULL)
677 if ((ppath = strchr_m( ppath+1, '\\' )) == NULL)
681 pstr_sprintf( newmount, "%s\\%s", mountpt, ppath );
682 cli_cm_set_mntpoint( *targetcli, newmount );
684 /* check for another dfs referral, note that we are not
685 checking for loops here */
687 if ( !strequal( targetpath, "\\" ) ) {
688 if ( cli_resolve_path( newmount, *targetcli, targetpath, &newcli, newpath ) ) {
690 pstrcpy( targetpath, newpath );
697 /********************************************************************
698 ********************************************************************/
700 BOOL cli_check_msdfs_proxy( struct cli_state *cli, const char *sharename,
701 fstring newserver, fstring newshare )
703 CLIENT_DFS_REFERRAL *refs = NULL;
709 fstring newextrapath;
711 if ( !cli || !sharename )
716 /* special case. never check for a referral on the IPC$ share */
718 if ( strequal( sharename, "IPC$" ) )
721 /* send a trans2_query_path_info to check for a referral */
723 pstr_sprintf( fullpath, "\\%s\\%s", cli->desthost, sharename );
725 /* check for the referral */
727 if (!cli_send_tconX(cli, "IPC$", "IPC", NULL, 0)) {
731 res = cli_dfs_get_referral(cli, fullpath, &refs, &num_refs, &consumed);
733 if (!cli_tdis(cli)) {
740 if (!res || !num_refs ) {
745 split_dfs_path( refs[0].dfspath, newserver, newshare, newextrapath );
747 /* check that this is not a self-referral */
749 if ( strequal( cli->desthost, newserver ) && strequal( sharename, newshare ) ) {