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 uint32 global_client_caps;
27 /**********************************************************************
28 Parse the pathname of the form \hostname\service\reqpath
29 into the dfs_path structure
30 **********************************************************************/
32 static BOOL parse_dfs_path(char* pathname, struct dfs_path* pdp)
34 pstring pathname_local;
37 pstrcpy(pathname_local,pathname);
38 p = temp = pathname_local;
42 trim_char(temp,'\\','\\');
43 DEBUG(10,("temp in parse_dfs_path: .%s. after trimming \\'s\n",temp));
46 /* parse out hostname */
47 p = strchr_m(temp,'\\');
51 pstrcpy(pdp->hostname,temp);
52 DEBUG(10,("parse_dfs_path: hostname: %s\n",pdp->hostname));
54 /* parse out servicename */
56 p = strchr_m(temp,'\\');
58 pstrcpy(pdp->servicename,temp);
59 pdp->reqpath[0] = '\0';
63 pstrcpy(pdp->servicename,temp);
64 DEBUG(10,("parse_dfs_path: servicename: %s\n",pdp->servicename));
67 check_path_syntax(pdp->reqpath, p+1);
69 DEBUG(10,("parse_dfs_path: rest of the path: %s\n",pdp->reqpath));
73 /**********************************************************************
74 Parse the pathname of the form /hostname/service/reqpath
75 into the dfs_path structure
76 **********************************************************************/
78 static BOOL parse_processed_dfs_path(char* pathname, struct dfs_path* pdp)
80 pstring pathname_local;
83 pstrcpy(pathname_local,pathname);
84 p = temp = pathname_local;
88 trim_char(temp,'/','/');
89 DEBUG(10,("temp in parse_processed_dfs_path: .%s. after trimming \\'s\n",temp));
92 /* parse out hostname */
93 p = strchr_m(temp,'/');
97 pstrcpy(pdp->hostname,temp);
98 DEBUG(10,("parse_processed_dfs_path: hostname: %s\n",pdp->hostname));
100 /* parse out servicename */
102 p = strchr_m(temp,'/');
104 pstrcpy(pdp->servicename,temp);
105 pdp->reqpath[0] = '\0';
109 pstrcpy(pdp->servicename,temp);
110 DEBUG(10,("parse_processed_dfs_path: servicename: %s\n",pdp->servicename));
112 /* rest is reqpath */
113 check_path_syntax(pdp->reqpath, p+1);
115 DEBUG(10,("parse_processed_dfs_path: rest of the path: %s\n",pdp->reqpath));
119 /********************************************************
120 Fake up a connection struct for the VFS layer.
121 Note this CHANGES CWD !!!! JRA.
122 *********************************************************/
124 static BOOL create_conn_struct( connection_struct *conn, int snum, char *path)
127 conn->service = snum;
128 conn->connectpath = path;
129 pstring_sub(conn->connectpath , "%S", lp_servicename(snum));
131 /* needed for smbd_vfs_init() */
133 if ( (conn->mem_ctx=talloc_init("connection_struct")) == NULL ) {
134 DEBUG(0,("talloc_init(connection_struct) failed!\n"));
138 if (!smbd_vfs_init(conn)) {
139 DEBUG(0,("create_conn_struct: smbd_vfs_init failed.\n"));
140 talloc_destroy( conn->mem_ctx );
145 * Windows seems to insist on doing trans2getdfsreferral() calls on the IPC$
146 * share as the anonymous user. If we try to chdir as that user we will
147 * fail.... WTF ? JRA.
150 if (vfs_ChDir(conn,conn->connectpath) != 0) {
151 DEBUG(3,("create_conn_struct: Can't ChDir to new conn path %s. Error was %s\n",
152 conn->connectpath, strerror(errno) ));
153 talloc_destroy( conn->mem_ctx );
160 /**********************************************************************
161 Parse the contents of a symlink to verify if it is an msdfs referral
162 A valid referral is of the form: msdfs:server1\share1,server2\share2
163 **********************************************************************/
165 static BOOL parse_symlink(char* buf,struct referral** preflist,
170 char* alt_path[MAX_REFERRAL_COUNT];
172 struct referral* reflist;
176 prot = strtok(temp,":");
178 if (!strequal(prot, "msdfs"))
181 /* No referral list requested. Just yes/no. */
185 /* parse out the alternate paths */
186 while(((alt_path[count] = strtok(NULL,",")) != NULL) && count<MAX_REFERRAL_COUNT)
189 DEBUG(10,("parse_symlink: count=%d\n", count));
191 reflist = *preflist = SMB_MALLOC_ARRAY(struct referral, count);
192 if(reflist == NULL) {
193 DEBUG(0,("parse_symlink: Malloc failed!\n"));
197 for(i=0;i<count;i++) {
200 /* replace all /'s in the alternate path by a \ */
201 for(p = alt_path[i]; *p && ((p = strchr_m(p,'/'))!=NULL); p++) {
205 /* Remove leading '\\'s */
207 while (*p && (*p == '\\')) {
211 pstrcpy(reflist[i].alternate_path, "\\");
212 pstrcat(reflist[i].alternate_path, p);
213 reflist[i].proximity = 0;
214 reflist[i].ttl = REFERRAL_TTL;
215 DEBUG(10, ("parse_symlink: Created alt path: %s\n", reflist[i].alternate_path));
224 /**********************************************************************
225 Returns true if the unix path is a valid msdfs symlink
226 **********************************************************************/
228 BOOL is_msdfs_link(connection_struct* conn, char * path,
229 struct referral** reflistp, int* refcnt,
230 SMB_STRUCT_STAT *sbufp)
234 int referral_len = 0;
242 if (SMB_VFS_LSTAT(conn, path, sbufp) != 0) {
243 DEBUG(5,("is_msdfs_link: %s does not exist.\n",path));
247 if (S_ISLNK(sbufp->st_mode)) {
248 /* open the link and read it */
249 referral_len = SMB_VFS_READLINK(conn, path, referral,
251 if (referral_len == -1) {
252 DEBUG(0,("is_msdfs_link: Error reading msdfs link %s: %s\n", path, strerror(errno)));
256 referral[referral_len] = '\0';
257 DEBUG(5,("is_msdfs_link: %s -> %s\n",path,referral));
258 if (parse_symlink(referral, reflistp, refcnt))
264 /*****************************************************************
265 Used by other functions to decide if a dfs path is remote,
266 and to get the list of referred locations for that remote path.
268 findfirst_flag: For findfirsts, dfs links themselves are not
269 redirected, but paths beyond the links are. For normal smb calls,
270 even dfs links need to be redirected.
272 self_referralp: clients expect a dfs referral for the same share when
273 they request referrals for dfs roots on a server.
275 consumedcntp: how much of the dfs path is being redirected. the client
276 should try the remaining path on the redirected server.
278 *****************************************************************/
280 static BOOL resolve_dfs_path(pstring dfspath, struct dfs_path* dp,
281 connection_struct* conn,
283 struct referral** reflistpp, int* refcntp,
284 BOOL* self_referralp, int* consumedcntp)
287 int consumed_level = 1;
289 BOOL bad_path = False;
290 SMB_STRUCT_STAT sbuf;
294 DEBUG(1,("resolve_dfs_path: NULL dfs_path* or NULL connection_struct*!\n"));
298 if (dp->reqpath[0] == '\0') {
299 if (self_referralp) {
300 DEBUG(6,("resolve_dfs_path: self-referral. returning False\n"));
301 *self_referralp = True;
306 DEBUG(10,("resolve_dfs_path: Conn path = %s req_path = %s\n", conn->connectpath, dp->reqpath));
308 unix_convert(dp->reqpath,conn,0,&bad_path,&sbuf);
309 /* JRA... should we strlower the last component here.... ? */
310 pstrcpy(localpath, dp->reqpath);
312 /* check if need to redirect */
313 if (is_msdfs_link(conn, localpath, reflistpp, refcntp, NULL)) {
314 if (findfirst_flag) {
315 DEBUG(6,("resolve_dfs_path (FindFirst) No redirection "
316 "for dfs link %s.\n", dfspath));
319 DEBUG(6,("resolve_dfs_path: %s resolves to a valid Dfs link.\n",
322 *consumedcntp = strlen(dfspath);
327 /* redirect if any component in the path is a link */
328 pstrcpy(reqpath, dp->reqpath);
329 p = strrchr_m(reqpath, '/');
332 pstrcpy(localpath, reqpath);
333 if (is_msdfs_link(conn, localpath, reflistpp, refcntp, NULL)) {
334 DEBUG(4, ("resolve_dfs_path: Redirecting %s because parent %s is dfs link\n", dfspath, localpath));
336 /* To find the path consumed, we truncate the original
337 DFS pathname passed to use to remove the last
338 component. The length of the resulting string is
344 pstrcpy(buf, dfspath);
345 trim_char(buf, '\0', '\\');
346 for (; consumed_level; consumed_level--) {
347 q = strrchr_m(buf, '\\');
351 *consumedcntp = strlen(buf);
352 DEBUG(10, ("resolve_dfs_path: Path consumed: %s (%d)\n", buf, *consumedcntp));
357 p = strrchr_m(reqpath, '/');
364 /*****************************************************************
365 Decides if a dfs pathname should be redirected or not.
366 If not, the pathname is converted to a tcon-relative local unix path
367 *****************************************************************/
369 BOOL dfs_redirect(pstring pathname, connection_struct* conn,
374 if (!conn || !pathname)
377 parse_processed_dfs_path(pathname, &dp);
379 /* if dfs pathname for a non-dfs share, convert to tcon-relative
380 path and return false */
381 if (!lp_msdfs_root(SNUM(conn))) {
382 pstrcpy(pathname, dp.reqpath);
386 if (!strequal(dp.servicename, lp_servicename(SNUM(conn)) ))
389 if (resolve_dfs_path(pathname, &dp, conn, findfirst_flag,
390 NULL, NULL, NULL, NULL)) {
391 DEBUG(3,("dfs_redirect: Redirecting %s\n", pathname));
394 DEBUG(3,("dfs_redirect: Not redirecting %s.\n", pathname));
396 /* Form non-dfs tcon-relative path */
397 pstrcpy(pathname, dp.reqpath);
398 DEBUG(3,("dfs_redirect: Path converted to non-dfs path %s\n",
406 /**********************************************************************
407 Return a self referral.
408 **********************************************************************/
410 static BOOL self_ref(char *pathname, struct junction_map *jucn,
411 int *consumedcntp, BOOL *self_referralp)
413 struct referral *ref;
415 if (self_referralp != NULL)
416 *self_referralp = True;
418 jucn->referral_count = 1;
419 if((ref = SMB_MALLOC_P(struct referral)) == NULL) {
420 DEBUG(0,("self_ref: malloc failed for referral\n"));
424 pstrcpy(ref->alternate_path,pathname);
426 ref->ttl = REFERRAL_TTL;
427 jucn->referral_list = ref;
429 *consumedcntp = strlen(pathname);
434 /**********************************************************************
435 Gets valid referrals for a dfs path and fills up the
436 junction_map structure
437 **********************************************************************/
439 BOOL get_referred_path(char *pathname, struct junction_map *jucn,
440 int *consumedcntp, BOOL *self_referralp)
444 struct connection_struct conns;
445 struct connection_struct* conn = &conns;
449 BOOL self_referral = False;
451 if (!pathname || !jucn)
457 *self_referralp = False;
459 self_referralp = &self_referral;
461 parse_dfs_path(pathname, &dp);
463 /* Verify hostname in path */
464 if ( !strequal(get_local_machine_name(), dp.hostname) ) {
465 /* Hostname mismatch, check if one of our IP addresses */
466 if (!ismyip(*interpret_addr2(dp.hostname))) {
467 DEBUG(3, ("get_referred_path: Invalid hostname %s in path %s\n",
468 dp.hostname, pathname));
473 pstrcpy(jucn->service_name, dp.servicename);
474 pstrcpy(jucn->volume_name, dp.reqpath);
476 /* Verify the share is a dfs root */
477 snum = lp_servicenumber(jucn->service_name);
479 if ((snum = find_service(jucn->service_name)) < 0)
483 if (!lp_msdfs_root(snum)) {
484 DEBUG(3,("get_referred_path: .%s. in dfs path %s is not a dfs root.\n",
485 dp.servicename, pathname));
490 * Self referrals are tested with a anonymous IPC connection and
491 * a GET_DFS_REFERRAL call to \\server\share. (which means dp.reqpath[0] points
492 * to an empty string). create_conn_struct cd's into the directory and will
493 * fail if it cannot (as the anonymous user). Cope with this.
496 if (dp.reqpath[0] == '\0') {
498 struct referral* ref;
500 if (*lp_msdfs_proxy(snum) == '\0')
501 return self_ref(pathname, jucn, consumedcntp,
504 jucn->referral_count = 1;
505 if ((ref = SMB_MALLOC_P(struct referral)) == NULL) {
506 DEBUG(0, ("malloc failed for referral\n"));
510 pstrcpy(ref->alternate_path, lp_msdfs_proxy(snum));
511 if (dp.reqpath[0] != '\0')
512 pstrcat(ref->alternate_path, dp.reqpath);
514 ref->ttl = REFERRAL_TTL;
515 jucn->referral_list = ref;
517 *consumedcntp = strlen(pathname);
522 pstrcpy(conn_path, lp_pathname(snum));
523 if (!create_conn_struct(conn, snum, conn_path))
526 /* If not remote & not a self referral, return False */
527 if (!resolve_dfs_path(pathname, &dp, conn, False,
528 &jucn->referral_list, &jucn->referral_count,
529 self_referralp, consumedcntp)) {
530 if (!*self_referralp) {
531 DEBUG(3,("get_referred_path: No valid referrals for path %s\n", pathname));
536 /* if self_referral, fill up the junction map */
537 if (*self_referralp) {
538 if (self_ref(pathname, jucn, consumedcntp, self_referralp) == False) {
547 talloc_destroy( conn->mem_ctx );
552 static int setup_ver2_dfs_referral(char* pathname, char** ppdata,
553 struct junction_map* junction,
557 char* pdata = *ppdata;
559 unsigned char uni_requestedpath[1024];
560 int uni_reqpathoffset1,uni_reqpathoffset2;
562 int requestedpathlen=0;
567 DEBUG(10,("setting up version2 referral\nRequested path:\n"));
569 requestedpathlen = rpcstr_push(uni_requestedpath, pathname, -1,
572 dump_data(10, (const char *) uni_requestedpath,requestedpathlen);
574 DEBUG(10,("ref count = %u\n",junction->referral_count));
576 uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
577 VERSION2_REFERRAL_SIZE * junction->referral_count;
579 uni_reqpathoffset2 = uni_reqpathoffset1 + requestedpathlen;
581 uni_curroffset = uni_reqpathoffset2 + requestedpathlen;
583 reply_size = REFERRAL_HEADER_SIZE + VERSION2_REFERRAL_SIZE*junction->referral_count +
584 2 * requestedpathlen;
585 DEBUG(10,("reply_size: %u\n",reply_size));
587 /* add up the unicode lengths of all the referral paths */
588 for(i=0;i<junction->referral_count;i++) {
589 DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
590 reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
593 DEBUG(10,("reply_size = %u\n",reply_size));
594 /* add the unexplained 0x16 bytes */
597 pdata = SMB_REALLOC(pdata,reply_size);
599 DEBUG(0,("malloc failed for Realloc!\n"));
604 /* copy in the dfs requested paths.. required for offset calculations */
605 memcpy(pdata+uni_reqpathoffset1,uni_requestedpath,requestedpathlen);
606 memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
608 /* create the header */
609 SSVAL(pdata,0,consumedcnt * 2); /* path consumed */
610 SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
612 SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
614 SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
617 /* add the referral elements */
618 for(i=0;i<junction->referral_count;i++) {
619 struct referral* ref = &junction->referral_list[i];
622 SSVAL(pdata,offset,2); /* version 2 */
623 SSVAL(pdata,offset+2,VERSION2_REFERRAL_SIZE);
625 SSVAL(pdata,offset+4,1);
627 SSVAL(pdata,offset+4,0);
628 SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
629 SIVAL(pdata,offset+8,ref->proximity);
630 SIVAL(pdata,offset+12,ref->ttl);
632 SSVAL(pdata,offset+16,uni_reqpathoffset1-offset);
633 SSVAL(pdata,offset+18,uni_reqpathoffset2-offset);
634 /* copy referred path into current offset */
635 unilen = rpcstr_push(pdata+uni_curroffset, ref->alternate_path,
638 SSVAL(pdata,offset+20,uni_curroffset-offset);
640 uni_curroffset += unilen;
641 offset += VERSION2_REFERRAL_SIZE;
643 /* add in the unexplained 22 (0x16) bytes at the end */
644 memset(pdata+uni_curroffset,'\0',0x16);
648 static int setup_ver3_dfs_referral(char* pathname, char** ppdata,
649 struct junction_map* junction,
653 char* pdata = *ppdata;
655 unsigned char uni_reqpath[1024];
656 int uni_reqpathoffset1, uni_reqpathoffset2;
663 DEBUG(10,("setting up version3 referral\n"));
665 reqpathlen = rpcstr_push(uni_reqpath, pathname, -1, STR_TERMINATE);
667 dump_data(10, (char *) uni_reqpath,reqpathlen);
669 uni_reqpathoffset1 = REFERRAL_HEADER_SIZE + VERSION3_REFERRAL_SIZE * junction->referral_count;
670 uni_reqpathoffset2 = uni_reqpathoffset1 + reqpathlen;
671 reply_size = uni_curroffset = uni_reqpathoffset2 + reqpathlen;
673 for(i=0;i<junction->referral_count;i++) {
674 DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
675 reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
678 pdata = SMB_REALLOC(pdata,reply_size);
680 DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
685 /* create the header */
686 SSVAL(pdata,0,consumedcnt * 2); /* path consumed */
687 SSVAL(pdata,2,junction->referral_count); /* number of referral */
689 SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
691 SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
693 /* copy in the reqpaths */
694 memcpy(pdata+uni_reqpathoffset1,uni_reqpath,reqpathlen);
695 memcpy(pdata+uni_reqpathoffset2,uni_reqpath,reqpathlen);
698 for(i=0;i<junction->referral_count;i++) {
699 struct referral* ref = &(junction->referral_list[i]);
702 SSVAL(pdata,offset,3); /* version 3 */
703 SSVAL(pdata,offset+2,VERSION3_REFERRAL_SIZE);
705 SSVAL(pdata,offset+4,1);
707 SSVAL(pdata,offset+4,0);
709 SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
710 SIVAL(pdata,offset+8,ref->ttl);
712 SSVAL(pdata,offset+12,uni_reqpathoffset1-offset);
713 SSVAL(pdata,offset+14,uni_reqpathoffset2-offset);
714 /* copy referred path into current offset */
715 unilen = rpcstr_push(pdata+uni_curroffset,ref->alternate_path,
716 -1, STR_UNICODE | STR_TERMINATE);
717 SSVAL(pdata,offset+16,uni_curroffset-offset);
718 /* copy 0x10 bytes of 00's in the ServiceSite GUID */
719 memset(pdata+offset+18,'\0',16);
721 uni_curroffset += unilen;
722 offset += VERSION3_REFERRAL_SIZE;
727 /******************************************************************
728 * Set up the Dfs referral for the dfs pathname
729 ******************************************************************/
731 int setup_dfs_referral(connection_struct *orig_conn, char *pathname, int max_referral_level, char** ppdata)
733 struct junction_map junction;
735 BOOL self_referral = False;
738 char *pathnamep = pathname;
740 ZERO_STRUCT(junction);
742 /* get the junction entry */
746 /* Trim pathname sent by client so it begins with only one backslash.
747 Two backslashes confuse some dfs clients
749 while (pathnamep[0] == '\\' && pathnamep[1] == '\\')
752 pstrcpy(buf, pathnamep);
753 /* The following call can change cwd. */
754 if (!get_referred_path(buf, &junction, &consumedcnt, &self_referral)) {
755 vfs_ChDir(orig_conn,orig_conn->connectpath);
758 vfs_ChDir(orig_conn,orig_conn->connectpath);
760 if (!self_referral) {
761 pathnamep[consumedcnt] = '\0';
763 if( DEBUGLVL( 3 ) ) {
765 dbgtext("setup_dfs_referral: Path %s to alternate path(s):",pathnamep);
766 for(i=0;i<junction.referral_count;i++)
767 dbgtext(" %s",junction.referral_list[i].alternate_path);
772 /* create the referral depeding on version */
773 DEBUG(10,("max_referral_level :%d\n",max_referral_level));
774 if(max_referral_level<2 || max_referral_level>3)
775 max_referral_level = 2;
777 switch(max_referral_level) {
779 reply_size = setup_ver2_dfs_referral(pathnamep, ppdata, &junction,
780 consumedcnt, self_referral);
781 SAFE_FREE(junction.referral_list);
784 reply_size = setup_ver3_dfs_referral(pathnamep, ppdata, &junction,
785 consumedcnt, self_referral);
786 SAFE_FREE(junction.referral_list);
789 DEBUG(0,("setup_dfs_referral: Invalid dfs referral version: %d\n", max_referral_level));
793 DEBUG(10,("DFS Referral pdata:\n"));
794 dump_data(10,*ppdata,reply_size);
798 /**********************************************************************
799 The following functions are called by the NETDFS RPC pipe functions
800 **********************************************************************/
802 /**********************************************************************
803 Creates a junction structure from a Dfs pathname
804 **********************************************************************/
805 BOOL create_junction(char* pathname, struct junction_map* jucn)
809 parse_dfs_path(pathname,&dp);
811 /* check if path is dfs : validate first token */
812 if ( !strequal(get_local_machine_name(),dp.hostname) ) {
814 /* Hostname mismatch, check if one of our IP addresses */
815 if (!ismyip(*interpret_addr2(dp.hostname))) {
816 DEBUG(4,("create_junction: Invalid hostname %s in dfs path %s\n",
817 dp.hostname, pathname));
822 /* Check for a non-DFS share */
823 if(!lp_msdfs_root(lp_servicenumber(dp.servicename))) {
824 DEBUG(4,("create_junction: %s is not an msdfs root.\n",
829 pstrcpy(jucn->service_name,dp.servicename);
830 pstrcpy(jucn->volume_name,dp.reqpath);
834 /**********************************************************************
835 Forms a valid Unix pathname from the junction
836 **********************************************************************/
838 static BOOL junction_to_local_path(struct junction_map* jucn, char* path,
839 int max_pathlen, connection_struct *conn)
847 snum = lp_servicenumber(jucn->service_name);
851 safe_strcpy(path, lp_pathname(snum), max_pathlen-1);
852 safe_strcat(path, "/", max_pathlen-1);
853 safe_strcat(path, jucn->volume_name, max_pathlen-1);
855 pstrcpy(conn_path, lp_pathname(snum));
856 if (!create_conn_struct(conn, snum, conn_path))
862 BOOL create_msdfs_link(struct junction_map *jucn, BOOL exists)
866 connection_struct conns;
867 connection_struct *conn = &conns;
869 BOOL insert_comma = False;
872 if(!junction_to_local_path(jucn, path, sizeof(path), conn))
875 /* form the msdfs_link contents */
876 pstrcpy(msdfs_link, "msdfs:");
877 for(i=0; i<jucn->referral_count; i++) {
878 char* refpath = jucn->referral_list[i].alternate_path;
880 trim_char(refpath, '\\', '\\');
881 if(*refpath == '\0') {
883 insert_comma = False;
886 if (i > 0 && insert_comma)
887 pstrcat(msdfs_link, ",");
889 pstrcat(msdfs_link, refpath);
895 DEBUG(5,("create_msdfs_link: Creating new msdfs link: %s -> %s\n", path, msdfs_link));
898 if(SMB_VFS_UNLINK(conn,path)!=0)
901 if(SMB_VFS_SYMLINK(conn, msdfs_link, path) < 0) {
902 DEBUG(1,("create_msdfs_link: symlink failed %s -> %s\nError: %s\n",
903 path, msdfs_link, strerror(errno)));
911 talloc_destroy( conn->mem_ctx );
915 BOOL remove_msdfs_link(struct junction_map* jucn)
918 connection_struct conns;
919 connection_struct *conn = &conns;
922 if( junction_to_local_path(jucn, path, sizeof(path), conn) ) {
923 if( SMB_VFS_UNLINK(conn, path) == 0 )
926 talloc_destroy( conn->mem_ctx );
932 static BOOL form_junctions(int snum, struct junction_map* jucn, int* jn_count)
937 pstring connect_path;
938 char* service_name = lp_servicename(snum);
939 connection_struct conns;
940 connection_struct *conn = &conns;
941 struct referral *ref = NULL;
944 pstrcpy(connect_path,lp_pathname(snum));
946 if(*connect_path == '\0')
950 * Fake up a connection struct for the VFS layer.
953 if (!create_conn_struct(conn, snum, connect_path))
956 /* form a junction for the msdfs root - convention
957 DO NOT REMOVE THIS: NT clients will not work with us
958 if this is not present
960 pstrcpy(jucn[cnt].service_name, service_name);
961 jucn[cnt].volume_name[0] = '\0';
962 jucn[cnt].referral_count = 1;
964 ref = jucn[cnt].referral_list = SMB_MALLOC_P(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", get_local_machine_name(), 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);