2 Unix SMB/Netbios implementation.
4 MSDfs services for Samba
5 Copyright (C) Shirish Kalele 2000
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 extern fstring local_machine
;
26 extern uint32 global_client_caps
;
28 /**********************************************************************
29 Parse the pathname of the form \hostname\service\reqpath
30 into the dfs_path structure
31 **********************************************************************/
33 static BOOL
parse_dfs_path(char* pathname
, struct dfs_path
* pdp
)
35 pstring pathname_local
;
38 pstrcpy(pathname_local
,pathname
);
39 p
= temp
= pathname_local
;
43 trim_char(temp
,'\\','\\');
44 DEBUG(10,("temp in parse_dfs_path: .%s. after trimming \\'s\n",temp
));
47 /* parse out hostname */
48 p
= strchr_m(temp
,'\\');
52 pstrcpy(pdp
->hostname
,temp
);
53 DEBUG(10,("parse_dfs_path: hostname: %s\n",pdp
->hostname
));
55 /* parse out servicename */
57 p
= strchr_m(temp
,'\\');
59 pstrcpy(pdp
->servicename
,temp
);
60 pdp
->reqpath
[0] = '\0';
64 pstrcpy(pdp
->servicename
,temp
);
65 DEBUG(10,("parse_dfs_path: servicename: %s\n",pdp
->servicename
));
68 check_path_syntax(pdp
->reqpath
, p
+1);
70 DEBUG(10,("parse_dfs_path: rest of the path: %s\n",pdp
->reqpath
));
74 /**********************************************************************
75 Parse the pathname of the form /hostname/service/reqpath
76 into the dfs_path structure
77 **********************************************************************/
79 static BOOL
parse_processed_dfs_path(char* pathname
, struct dfs_path
* pdp
)
81 pstring pathname_local
;
84 pstrcpy(pathname_local
,pathname
);
85 p
= temp
= pathname_local
;
89 trim_char(temp
,'/','/');
90 DEBUG(10,("temp in parse_processed_dfs_path: .%s. after trimming \\'s\n",temp
));
93 /* parse out hostname */
94 p
= strchr_m(temp
,'/');
98 pstrcpy(pdp
->hostname
,temp
);
99 DEBUG(10,("parse_processed_dfs_path: hostname: %s\n",pdp
->hostname
));
101 /* parse out servicename */
103 p
= strchr_m(temp
,'/');
105 pstrcpy(pdp
->servicename
,temp
);
106 pdp
->reqpath
[0] = '\0';
110 pstrcpy(pdp
->servicename
,temp
);
111 DEBUG(10,("parse_processed_dfs_path: servicename: %s\n",pdp
->servicename
));
113 /* rest is reqpath */
114 check_path_syntax(pdp
->reqpath
, p
+1);
116 DEBUG(10,("parse_processed_dfs_path: rest of the path: %s\n",pdp
->reqpath
));
120 /********************************************************
121 Fake up a connection struct for the VFS layer.
122 Note this CHANGES CWD !!!! JRA.
123 *********************************************************/
125 static BOOL
create_conn_struct( connection_struct
*conn
, int snum
, char *path
)
128 conn
->service
= snum
;
129 conn
->connectpath
= path
;
130 pstring_sub(conn
->connectpath
, "%S", lp_servicename(snum
));
132 /* needed for smbd_vfs_init() */
134 if ( (conn
->mem_ctx
=talloc_init("connection_struct")) == NULL
) {
135 DEBUG(0,("talloc_init(connection_struct) failed!\n"));
139 if (!smbd_vfs_init(conn
)) {
140 DEBUG(0,("create_conn_struct: smbd_vfs_init failed.\n"));
141 talloc_destroy( conn
->mem_ctx
);
146 * Windows seems to insist on doing trans2getdfsreferral() calls on the IPC$
147 * share as the anonymous user. If we try to chdir as that user we will
148 * fail.... WTF ? JRA.
151 if (vfs_ChDir(conn
,conn
->connectpath
) != 0) {
152 DEBUG(3,("create_conn_struct: Can't ChDir to new conn path %s. Error was %s\n",
153 conn
->connectpath
, strerror(errno
) ));
154 talloc_destroy( conn
->mem_ctx
);
161 /**********************************************************************
162 Parse the contents of a symlink to verify if it is an msdfs referral
163 A valid referral is of the form: msdfs:server1\share1,server2\share2
164 **********************************************************************/
166 static BOOL
parse_symlink(char* buf
,struct referral
** preflist
,
171 char* alt_path
[MAX_REFERRAL_COUNT
];
173 struct referral
* reflist
;
177 prot
= strtok(temp
,":");
179 if (!strequal(prot
, "msdfs"))
182 /* No referral list requested. Just yes/no. */
186 /* parse out the alternate paths */
187 while(((alt_path
[count
] = strtok(NULL
,",")) != NULL
) && count
<MAX_REFERRAL_COUNT
)
190 DEBUG(10,("parse_symlink: count=%d\n", count
));
192 reflist
= *preflist
= (struct referral
*) malloc(count
* sizeof(struct referral
));
193 if(reflist
== NULL
) {
194 DEBUG(0,("parse_symlink: Malloc failed!\n"));
198 for(i
=0;i
<count
;i
++) {
201 /* replace all /'s in the alternate path by a \ */
202 for(p
= alt_path
[i
]; *p
&& ((p
= strchr_m(p
,'/'))!=NULL
); p
++) {
206 /* Remove leading '\\'s */
208 while (*p
&& (*p
== '\\')) {
212 pstrcpy(reflist
[i
].alternate_path
, "\\");
213 pstrcat(reflist
[i
].alternate_path
, p
);
214 reflist
[i
].proximity
= 0;
215 reflist
[i
].ttl
= REFERRAL_TTL
;
216 DEBUG(10, ("parse_symlink: Created alt path: %s\n", reflist
[i
].alternate_path
));
225 /**********************************************************************
226 Returns true if the unix path is a valid msdfs symlink
227 **********************************************************************/
229 BOOL
is_msdfs_link(connection_struct
* conn
, char * path
,
230 struct referral
** reflistp
, int* refcnt
,
231 SMB_STRUCT_STAT
*sbufp
)
235 int referral_len
= 0;
243 if (SMB_VFS_LSTAT(conn
, path
, sbufp
) != 0) {
244 DEBUG(5,("is_msdfs_link: %s does not exist.\n",path
));
248 if (S_ISLNK(sbufp
->st_mode
)) {
249 /* open the link and read it */
250 referral_len
= SMB_VFS_READLINK(conn
, path
, referral
,
252 if (referral_len
== -1) {
253 DEBUG(0,("is_msdfs_link: Error reading msdfs link %s: %s\n", path
, strerror(errno
)));
257 referral
[referral_len
] = '\0';
258 DEBUG(5,("is_msdfs_link: %s -> %s\n",path
,referral
));
259 if (parse_symlink(referral
, reflistp
, refcnt
))
265 /*****************************************************************
266 Used by other functions to decide if a dfs path is remote,
267 and to get the list of referred locations for that remote path.
269 findfirst_flag: For findfirsts, dfs links themselves are not
270 redirected, but paths beyond the links are. For normal smb calls,
271 even dfs links need to be redirected.
273 self_referralp: clients expect a dfs referral for the same share when
274 they request referrals for dfs roots on a server.
276 consumedcntp: how much of the dfs path is being redirected. the client
277 should try the remaining path on the redirected server.
279 *****************************************************************/
281 static BOOL
resolve_dfs_path(pstring dfspath
, struct dfs_path
* dp
,
282 connection_struct
* conn
,
284 struct referral
** reflistpp
, int* refcntp
,
285 BOOL
* self_referralp
, int* consumedcntp
)
288 int consumed_level
= 1;
290 BOOL bad_path
= False
;
291 SMB_STRUCT_STAT sbuf
;
295 DEBUG(1,("resolve_dfs_path: NULL dfs_path* or NULL connection_struct*!\n"));
299 if (dp
->reqpath
[0] == '\0') {
300 if (self_referralp
) {
301 DEBUG(6,("resolve_dfs_path: self-referral. returning False\n"));
302 *self_referralp
= True
;
307 DEBUG(10,("resolve_dfs_path: Conn path = %s req_path = %s\n", conn
->connectpath
, dp
->reqpath
));
309 unix_convert(dp
->reqpath
,conn
,0,&bad_path
,&sbuf
);
310 /* JRA... should we strlower the last component here.... ? */
311 pstrcpy(localpath
, dp
->reqpath
);
313 /* check if need to redirect */
314 if (is_msdfs_link(conn
, localpath
, reflistpp
, refcntp
, NULL
)) {
315 if (findfirst_flag
) {
316 DEBUG(6,("resolve_dfs_path (FindFirst) No redirection "
317 "for dfs link %s.\n", dfspath
));
320 DEBUG(6,("resolve_dfs_path: %s resolves to a valid Dfs link.\n",
323 *consumedcntp
= strlen(dfspath
);
328 /* redirect if any component in the path is a link */
329 pstrcpy(reqpath
, dp
->reqpath
);
330 p
= strrchr_m(reqpath
, '/');
333 pstrcpy(localpath
, reqpath
);
334 if (is_msdfs_link(conn
, localpath
, reflistpp
, refcntp
, NULL
)) {
335 DEBUG(4, ("resolve_dfs_path: Redirecting %s because parent %s is dfs link\n", dfspath
, localpath
));
337 /* To find the path consumed, we truncate the original
338 DFS pathname passed to use to remove the last
339 component. The length of the resulting string is
345 pstrcpy(buf
, dfspath
);
346 trim_char(buf
, '\0', '\\');
347 for (; consumed_level
; consumed_level
--) {
348 q
= strrchr_m(buf
, '\\');
352 *consumedcntp
= strlen(buf
);
353 DEBUG(10, ("resolve_dfs_path: Path consumed: %s (%d)\n", buf
, *consumedcntp
));
358 p
= strrchr_m(reqpath
, '/');
365 /*****************************************************************
366 Decides if a dfs pathname should be redirected or not.
367 If not, the pathname is converted to a tcon-relative local unix path
368 *****************************************************************/
370 BOOL
dfs_redirect(pstring pathname
, connection_struct
* conn
,
375 if (!conn
|| !pathname
)
378 parse_processed_dfs_path(pathname
, &dp
);
380 /* if dfs pathname for a non-dfs share, convert to tcon-relative
381 path and return false */
382 if (!lp_msdfs_root(SNUM(conn
))) {
383 pstrcpy(pathname
, dp
.reqpath
);
387 if (!strequal(dp
.servicename
, lp_servicename(SNUM(conn
)) ))
390 if (resolve_dfs_path(pathname
, &dp
, conn
, findfirst_flag
,
391 NULL
, NULL
, NULL
, NULL
)) {
392 DEBUG(3,("dfs_redirect: Redirecting %s\n", pathname
));
395 DEBUG(3,("dfs_redirect: Not redirecting %s.\n", pathname
));
397 /* Form non-dfs tcon-relative path */
398 pstrcpy(pathname
, dp
.reqpath
);
399 DEBUG(3,("dfs_redirect: Path converted to non-dfs path %s\n",
407 /**********************************************************************
408 Return a self referral.
409 **********************************************************************/
411 static BOOL
self_ref(char *pathname
, struct junction_map
*jucn
,
412 int *consumedcntp
, BOOL
*self_referralp
)
414 struct referral
*ref
;
416 if (self_referralp
!= NULL
)
417 *self_referralp
= True
;
419 jucn
->referral_count
= 1;
420 if((ref
= (struct referral
*) malloc(sizeof(struct referral
))) == NULL
) {
421 DEBUG(0,("self_ref: malloc failed for referral\n"));
425 pstrcpy(ref
->alternate_path
,pathname
);
427 ref
->ttl
= REFERRAL_TTL
;
428 jucn
->referral_list
= ref
;
430 *consumedcntp
= strlen(pathname
);
435 /**********************************************************************
436 Gets valid referrals for a dfs path and fills up the
437 junction_map structure
438 **********************************************************************/
440 BOOL
get_referred_path(char *pathname
, struct junction_map
*jucn
,
441 int *consumedcntp
, BOOL
*self_referralp
)
445 struct connection_struct conns
;
446 struct connection_struct
* conn
= &conns
;
450 BOOL self_referral
= False
;
452 if (!pathname
|| !jucn
)
458 *self_referralp
= False
;
460 self_referralp
= &self_referral
;
462 parse_dfs_path(pathname
, &dp
);
464 /* Verify hostname in path */
465 if (local_machine
&& (!strequal(local_machine
, dp
.hostname
))) {
466 /* Hostname mismatch, check if one of our IP addresses */
467 if (!ismyip(*interpret_addr2(dp
.hostname
))) {
468 DEBUG(3, ("get_referred_path: Invalid hostname %s in path %s\n",
469 dp
.hostname
, pathname
));
474 pstrcpy(jucn
->service_name
, dp
.servicename
);
475 pstrcpy(jucn
->volume_name
, dp
.reqpath
);
477 /* Verify the share is a dfs root */
478 snum
= lp_servicenumber(jucn
->service_name
);
480 if ((snum
= find_service(jucn
->service_name
)) < 0)
484 if (!lp_msdfs_root(snum
)) {
485 DEBUG(3,("get_referred_path: .%s. in dfs path %s is not a dfs root.\n",
486 dp
.servicename
, pathname
));
491 * Self referrals are tested with a anonymous IPC connection and
492 * a GET_DFS_REFERRAL call to \\server\share. (which means dp.reqpath[0] points
493 * to an empty string). create_conn_struct cd's into the directory and will
494 * fail if it cannot (as the anonymous user). Cope with this.
497 if (dp
.reqpath
[0] == '\0') {
498 return self_ref(pathname
, jucn
, consumedcntp
, self_referralp
);
501 pstrcpy(conn_path
, lp_pathname(snum
));
502 if (!create_conn_struct(conn
, snum
, conn_path
))
505 if (*lp_msdfs_proxy(snum
) != '\0') {
506 struct referral
* ref
;
507 jucn
->referral_count
= 1;
508 if ((ref
= (struct referral
*) malloc(sizeof(struct referral
))) == NULL
) {
509 DEBUG(0, ("malloc failed for referral\n"));
513 pstrcpy(ref
->alternate_path
, lp_msdfs_proxy(snum
));
514 if (dp
.reqpath
[0] != '\0')
515 pstrcat(ref
->alternate_path
, dp
.reqpath
);
517 ref
->ttl
= REFERRAL_TTL
;
518 jucn
->referral_list
= ref
;
520 *consumedcntp
= strlen(pathname
);
525 /* If not remote & not a self referral, return False */
526 if (!resolve_dfs_path(pathname
, &dp
, conn
, False
,
527 &jucn
->referral_list
, &jucn
->referral_count
,
528 self_referralp
, consumedcntp
)) {
529 if (!*self_referralp
) {
530 DEBUG(3,("get_referred_path: No valid referrals for path %s\n", pathname
));
535 /* if self_referral, fill up the junction map */
536 if (*self_referralp
) {
537 if (self_ref(pathname
, jucn
, consumedcntp
, self_referralp
) == False
) {
546 talloc_destroy( conn
->mem_ctx
);
551 static int setup_ver2_dfs_referral(char* pathname
, char** ppdata
,
552 struct junction_map
* junction
,
556 char* pdata
= *ppdata
;
558 unsigned char uni_requestedpath
[1024];
559 int uni_reqpathoffset1
,uni_reqpathoffset2
;
561 int requestedpathlen
=0;
566 DEBUG(10,("setting up version2 referral\nRequested path:\n"));
568 requestedpathlen
= rpcstr_push(uni_requestedpath
, pathname
, -1,
571 dump_data(10, (const char *) uni_requestedpath
,requestedpathlen
);
573 DEBUG(10,("ref count = %u\n",junction
->referral_count
));
575 uni_reqpathoffset1
= REFERRAL_HEADER_SIZE
+
576 VERSION2_REFERRAL_SIZE
* junction
->referral_count
;
578 uni_reqpathoffset2
= uni_reqpathoffset1
+ requestedpathlen
;
580 uni_curroffset
= uni_reqpathoffset2
+ requestedpathlen
;
582 reply_size
= REFERRAL_HEADER_SIZE
+ VERSION2_REFERRAL_SIZE
*junction
->referral_count
+
583 2 * requestedpathlen
;
584 DEBUG(10,("reply_size: %u\n",reply_size
));
586 /* add up the unicode lengths of all the referral paths */
587 for(i
=0;i
<junction
->referral_count
;i
++) {
588 DEBUG(10,("referral %u : %s\n",i
,junction
->referral_list
[i
].alternate_path
));
589 reply_size
+= (strlen(junction
->referral_list
[i
].alternate_path
)+1)*2;
592 DEBUG(10,("reply_size = %u\n",reply_size
));
593 /* add the unexplained 0x16 bytes */
596 pdata
= Realloc(pdata
,reply_size
);
598 DEBUG(0,("malloc failed for Realloc!\n"));
603 /* copy in the dfs requested paths.. required for offset calculations */
604 memcpy(pdata
+uni_reqpathoffset1
,uni_requestedpath
,requestedpathlen
);
605 memcpy(pdata
+uni_reqpathoffset2
,uni_requestedpath
,requestedpathlen
);
607 /* create the header */
608 SSVAL(pdata
,0,consumedcnt
* 2); /* path consumed */
609 SSVAL(pdata
,2,junction
->referral_count
); /* number of referral in this pkt */
611 SIVAL(pdata
,4,DFSREF_REFERRAL_SERVER
| DFSREF_STORAGE_SERVER
);
613 SIVAL(pdata
,4,DFSREF_STORAGE_SERVER
);
616 /* add the referral elements */
617 for(i
=0;i
<junction
->referral_count
;i
++) {
618 struct referral
* ref
= &junction
->referral_list
[i
];
621 SSVAL(pdata
,offset
,2); /* version 2 */
622 SSVAL(pdata
,offset
+2,VERSION2_REFERRAL_SIZE
);
624 SSVAL(pdata
,offset
+4,1);
626 SSVAL(pdata
,offset
+4,0);
627 SSVAL(pdata
,offset
+6,0); /* ref_flags :use path_consumed bytes? */
628 SIVAL(pdata
,offset
+8,ref
->proximity
);
629 SIVAL(pdata
,offset
+12,ref
->ttl
);
631 SSVAL(pdata
,offset
+16,uni_reqpathoffset1
-offset
);
632 SSVAL(pdata
,offset
+18,uni_reqpathoffset2
-offset
);
633 /* copy referred path into current offset */
634 unilen
= rpcstr_push(pdata
+uni_curroffset
, ref
->alternate_path
,
637 SSVAL(pdata
,offset
+20,uni_curroffset
-offset
);
639 uni_curroffset
+= unilen
;
640 offset
+= VERSION2_REFERRAL_SIZE
;
642 /* add in the unexplained 22 (0x16) bytes at the end */
643 memset(pdata
+uni_curroffset
,'\0',0x16);
647 static int setup_ver3_dfs_referral(char* pathname
, char** ppdata
,
648 struct junction_map
* junction
,
652 char* pdata
= *ppdata
;
654 unsigned char uni_reqpath
[1024];
655 int uni_reqpathoffset1
, uni_reqpathoffset2
;
662 DEBUG(10,("setting up version3 referral\n"));
664 reqpathlen
= rpcstr_push(uni_reqpath
, pathname
, -1, STR_TERMINATE
);
666 dump_data(10, (char *) uni_reqpath
,reqpathlen
);
668 uni_reqpathoffset1
= REFERRAL_HEADER_SIZE
+ VERSION3_REFERRAL_SIZE
* junction
->referral_count
;
669 uni_reqpathoffset2
= uni_reqpathoffset1
+ reqpathlen
;
670 reply_size
= uni_curroffset
= uni_reqpathoffset2
+ reqpathlen
;
672 for(i
=0;i
<junction
->referral_count
;i
++) {
673 DEBUG(10,("referral %u : %s\n",i
,junction
->referral_list
[i
].alternate_path
));
674 reply_size
+= (strlen(junction
->referral_list
[i
].alternate_path
)+1)*2;
677 pdata
= Realloc(pdata
,reply_size
);
679 DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
684 /* create the header */
685 SSVAL(pdata
,0,consumedcnt
* 2); /* path consumed */
686 SSVAL(pdata
,2,junction
->referral_count
); /* number of referral */
688 SIVAL(pdata
,4,DFSREF_REFERRAL_SERVER
| DFSREF_STORAGE_SERVER
);
690 SIVAL(pdata
,4,DFSREF_STORAGE_SERVER
);
692 /* copy in the reqpaths */
693 memcpy(pdata
+uni_reqpathoffset1
,uni_reqpath
,reqpathlen
);
694 memcpy(pdata
+uni_reqpathoffset2
,uni_reqpath
,reqpathlen
);
697 for(i
=0;i
<junction
->referral_count
;i
++) {
698 struct referral
* ref
= &(junction
->referral_list
[i
]);
701 SSVAL(pdata
,offset
,3); /* version 3 */
702 SSVAL(pdata
,offset
+2,VERSION3_REFERRAL_SIZE
);
704 SSVAL(pdata
,offset
+4,1);
706 SSVAL(pdata
,offset
+4,0);
708 SSVAL(pdata
,offset
+6,0); /* ref_flags :use path_consumed bytes? */
709 SIVAL(pdata
,offset
+8,ref
->ttl
);
711 SSVAL(pdata
,offset
+12,uni_reqpathoffset1
-offset
);
712 SSVAL(pdata
,offset
+14,uni_reqpathoffset2
-offset
);
713 /* copy referred path into current offset */
714 unilen
= rpcstr_push(pdata
+uni_curroffset
,ref
->alternate_path
,
715 -1, STR_UNICODE
| STR_TERMINATE
);
716 SSVAL(pdata
,offset
+16,uni_curroffset
-offset
);
717 /* copy 0x10 bytes of 00's in the ServiceSite GUID */
718 memset(pdata
+offset
+18,'\0',16);
720 uni_curroffset
+= unilen
;
721 offset
+= VERSION3_REFERRAL_SIZE
;
726 /******************************************************************
727 * Set up the Dfs referral for the dfs pathname
728 ******************************************************************/
730 int setup_dfs_referral(connection_struct
*orig_conn
, char *pathname
, int max_referral_level
, char** ppdata
)
732 struct junction_map junction
;
734 BOOL self_referral
= False
;
737 char *pathnamep
= pathname
;
739 ZERO_STRUCT(junction
);
741 /* get the junction entry */
745 /* Trim pathname sent by client so it begins with only one backslash.
746 Two backslashes confuse some dfs clients
748 while (pathnamep
[0] == '\\' && pathnamep
[1] == '\\')
751 pstrcpy(buf
, pathnamep
);
752 /* The following call can change cwd. */
753 if (!get_referred_path(buf
, &junction
, &consumedcnt
, &self_referral
)) {
754 vfs_ChDir(orig_conn
,orig_conn
->connectpath
);
757 vfs_ChDir(orig_conn
,orig_conn
->connectpath
);
759 if (!self_referral
) {
760 pathnamep
[consumedcnt
] = '\0';
762 if( DEBUGLVL( 3 ) ) {
764 dbgtext("setup_dfs_referral: Path %s to alternate path(s):",pathnamep
);
765 for(i
=0;i
<junction
.referral_count
;i
++)
766 dbgtext(" %s",junction
.referral_list
[i
].alternate_path
);
771 /* create the referral depeding on version */
772 DEBUG(10,("max_referral_level :%d\n",max_referral_level
));
773 if(max_referral_level
<2 || max_referral_level
>3)
774 max_referral_level
= 2;
776 switch(max_referral_level
) {
778 reply_size
= setup_ver2_dfs_referral(pathnamep
, ppdata
, &junction
,
779 consumedcnt
, self_referral
);
780 SAFE_FREE(junction
.referral_list
);
783 reply_size
= setup_ver3_dfs_referral(pathnamep
, ppdata
, &junction
,
784 consumedcnt
, self_referral
);
785 SAFE_FREE(junction
.referral_list
);
788 DEBUG(0,("setup_dfs_referral: Invalid dfs referral version: %d\n", max_referral_level
));
792 DEBUG(10,("DFS Referral pdata:\n"));
793 dump_data(10,*ppdata
,reply_size
);
797 /**********************************************************************
798 The following functions are called by the NETDFS RPC pipe functions
799 **********************************************************************/
801 /**********************************************************************
802 Creates a junction structure from a Dfs pathname
803 **********************************************************************/
804 BOOL
create_junction(char* pathname
, struct junction_map
* jucn
)
808 parse_dfs_path(pathname
,&dp
);
810 /* check if path is dfs : validate first token */
811 if (local_machine
&& (!strequal(local_machine
,dp
.hostname
))) {
813 /* Hostname mismatch, check if one of our IP addresses */
814 if (!ismyip(*interpret_addr2(dp
.hostname
))) {
815 DEBUG(4,("create_junction: Invalid hostname %s in dfs path %s\n",
816 dp
.hostname
, pathname
));
821 /* Check for a non-DFS share */
822 if(!lp_msdfs_root(lp_servicenumber(dp
.servicename
))) {
823 DEBUG(4,("create_junction: %s is not an msdfs root.\n",
828 pstrcpy(jucn
->service_name
,dp
.servicename
);
829 pstrcpy(jucn
->volume_name
,dp
.reqpath
);
833 /**********************************************************************
834 Forms a valid Unix pathname from the junction
835 **********************************************************************/
837 static BOOL
junction_to_local_path(struct junction_map
* jucn
, char* path
,
838 int max_pathlen
, connection_struct
*conn
)
846 snum
= lp_servicenumber(jucn
->service_name
);
850 safe_strcpy(path
, lp_pathname(snum
), max_pathlen
-1);
851 safe_strcat(path
, "/", max_pathlen
-1);
852 safe_strcat(path
, jucn
->volume_name
, max_pathlen
-1);
854 pstrcpy(conn_path
, lp_pathname(snum
));
855 if (!create_conn_struct(conn
, snum
, conn_path
))
861 BOOL
create_msdfs_link(struct junction_map
*jucn
, BOOL exists
)
865 connection_struct conns
;
866 connection_struct
*conn
= &conns
;
868 BOOL insert_comma
= False
;
871 if(!junction_to_local_path(jucn
, path
, sizeof(path
), conn
))
874 /* form the msdfs_link contents */
875 pstrcpy(msdfs_link
, "msdfs:");
876 for(i
=0; i
<jucn
->referral_count
; i
++) {
877 char* refpath
= jucn
->referral_list
[i
].alternate_path
;
879 trim_char(refpath
, '\\', '\\');
880 if(*refpath
== '\0') {
882 insert_comma
= False
;
885 if (i
> 0 && insert_comma
)
886 pstrcat(msdfs_link
, ",");
888 pstrcat(msdfs_link
, refpath
);
894 DEBUG(5,("create_msdfs_link: Creating new msdfs link: %s -> %s\n", path
, msdfs_link
));
897 if(SMB_VFS_UNLINK(conn
,path
)!=0)
900 if(SMB_VFS_SYMLINK(conn
, msdfs_link
, path
) < 0) {
901 DEBUG(1,("create_msdfs_link: symlink failed %s -> %s\nError: %s\n",
902 path
, msdfs_link
, strerror(errno
)));
910 talloc_destroy( conn
->mem_ctx
);
914 BOOL
remove_msdfs_link(struct junction_map
* jucn
)
917 connection_struct conns
;
918 connection_struct
*conn
= &conns
;
921 if( junction_to_local_path(jucn
, path
, sizeof(path
), conn
) ) {
922 if( SMB_VFS_UNLINK(conn
, path
) == 0 )
925 talloc_destroy( conn
->mem_ctx
);
931 static BOOL
form_junctions(int snum
, struct junction_map
* jucn
, int* jn_count
)
936 pstring connect_path
;
937 char* service_name
= lp_servicename(snum
);
938 connection_struct conns
;
939 connection_struct
*conn
= &conns
;
940 struct referral
*ref
= NULL
;
943 pstrcpy(connect_path
,lp_pathname(snum
));
945 if(*connect_path
== '\0')
949 * Fake up a connection struct for the VFS layer.
952 if (!create_conn_struct(conn
, snum
, connect_path
))
955 /* form a junction for the msdfs root - convention
956 DO NOT REMOVE THIS: NT clients will not work with us
957 if this is not present
959 pstrcpy(jucn
[cnt
].service_name
, service_name
);
960 jucn
[cnt
].volume_name
[0] = '\0';
961 jucn
[cnt
].referral_count
= 1;
963 ref
= jucn
[cnt
].referral_list
964 = (struct referral
*) malloc(sizeof(struct referral
));
965 if (jucn
[cnt
].referral_list
== NULL
) {
966 DEBUG(0, ("Malloc failed!\n"));
971 ref
->ttl
= REFERRAL_TTL
;
972 if (*lp_msdfs_proxy(snum
) != '\0') {
973 pstrcpy(ref
->alternate_path
, lp_msdfs_proxy(snum
));
979 slprintf(ref
->alternate_path
, sizeof(pstring
)-1,
980 "\\\\%s\\%s", local_machine
, service_name
);
983 /* Now enumerate all dfs links */
984 dirp
= SMB_VFS_OPENDIR(conn
, ".");
988 while((dname
= vfs_readdirname(conn
, dirp
)) != NULL
) {
989 if (is_msdfs_link(conn
, dname
, &(jucn
[cnt
].referral_list
),
990 &(jucn
[cnt
].referral_count
), NULL
)) {
991 pstrcpy(jucn
[cnt
].service_name
, service_name
);
992 pstrcpy(jucn
[cnt
].volume_name
, dname
);
997 SMB_VFS_CLOSEDIR(conn
,dirp
);
1000 talloc_destroy(conn
->mem_ctx
);
1004 int enum_msdfs_links(struct junction_map
* jucn
)
1009 if(!lp_host_msdfs())
1012 for(i
=0;i
< lp_numservices();i
++) {
1013 if(lp_msdfs_root(i
))
1014 form_junctions(i
,jucn
,&jn_count
);