source/msdfs/msdfs.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    MSDfs services for Samba
   5    Copyright (C) Shirish Kalele 2000
   6
   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.
  11
  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.
  16
  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.
  20 */
  21
  22 #include "includes.h"
  23
  24 extern int DEBUGLEVEL;
  25 extern pstring global_myname;
  26 extern uint32 global_client_caps;
  27
  28 #ifdef WITH_MSDFS
  29
  30 /**********************************************************************
  31  Create a tcon relative path from a dfs_path structure
  32  **********************************************************************/
  33 static void create_nondfs_path(char* pathname, struct dfs_path* pdp)
  34 {
  35   pstrcpy(pathname,pdp->volumename);
  36   pstrcat(pathname,"\\");
  37   pstrcat(pathname,pdp->restofthepath);
  38 }
  39
  40 /**********************************************************************
  41   Parse the pathname  of the form \hostname\service\volume\restofthepath
  42   into the dfs_path structure
  43  **********************************************************************/
  44 static BOOL parse_dfs_path(char* pathname, struct dfs_path* pdp)
  45 {
  46   pstring pathname_local;
  47   char* p,*temp;
  48
  49   pstrcpy(pathname_local,pathname);
  50   p = temp = pathname_local;
  51
  52   ZERO_STRUCTP(pdp);
  53
  54   trim_string(temp,"\\","\\");
  55   DEBUG(10,("temp in parse_dfs_path: .%s. after trimming \\'s\n",temp));
  56
  57   /* now tokenize */
  58   /* parse out hostname */
  59   p = strchr(temp,'\\');
  60   if(p == NULL)
  61     return False;
  62   *p = '\0';
  63   pstrcpy(pdp->hostname,temp);
  64   DEBUG(10,("hostname: %s\n",pdp->hostname));
  65
  66   /* parse out servicename */
  67   temp = p+1;
  68   p = strchr(temp,'\\');
  69   if(p == NULL)
  70     {
  71       pstrcpy(pdp->servicename,temp);
  72       return True;
  73     }
  74   *p = '\0';
  75   pstrcpy(pdp->servicename,temp);
  76   DEBUG(10,("servicename: %s\n",pdp->servicename));
  77
  78   /* parse out volumename */
  79   temp = p+1;
  80   p = strchr(temp,'\\');
  81   if(p == NULL)
  82     {
  83       pstrcpy(pdp->volumename,temp);
  84       return True;
  85     }
  86   *p = '\0';
  87   pstrcpy(pdp->volumename,temp);
  88   DEBUG(10,("volumename: %s\n",pdp->volumename));
  89
  90   /* remaining path .. */
  91   pstrcpy(pdp->restofthepath,p+1);
  92   DEBUG(10,("rest of the path: %s\n",pdp->restofthepath));
  93   return True;
  94 }
  95
  96 /**********************************************************************
  97  Forms a valid Unix pathname from the junction
  98  **********************************************************************/
  99 static BOOL form_path_from_junction(struct junction_map* jn, char* path,
 100                                  int max_pathlen)
 101 {
 102   int snum;
 103
 104   if(!path || !jn)
 105     return False;
 106
 107   snum = lp_servicenumber(jn->service_name);
 108   if(snum < 0)
 109     return False;
 110
 111   safe_strcpy(path, lp_pathname(snum), max_pathlen-1);
 112   safe_strcat(path, "/", max_pathlen-1);
 113   strlower(jn->volume_name);
 114   safe_strcat(path, jn->volume_name, max_pathlen-1);
 115   return True;
 116 }
 117
 118 /**********************************************************************
 119  Creates a junction structure from the Dfs pathname
 120  **********************************************************************/
 121 BOOL create_junction(char* pathname, struct junction_map* jn)
 122 {
 123   struct dfs_path dp;
 124
 125   parse_dfs_path(pathname,&dp);
 126
 127   /* check if path is dfs : check hostname is the first token */
 128   if(global_myname && (strcasecmp(global_myname,dp.hostname)!=0))
 129      {
 130        DEBUG(4,("create_junction: Invalid hostname %s in dfs path %s\n",
 131                 dp.hostname, pathname));
 132        return False;
 133      }
 134
 135   /* Check for a non-DFS share */
 136     if(!lp_msdfs_root(lp_servicenumber(dp.servicename)))
 137       {
 138         DEBUG(4,("create_junction: %s is not an msdfs root.\n",
 139                  dp.servicename));
 140         return False;
 141       }
 142
 143   pstrcpy(jn->service_name,dp.servicename);
 144   pstrcpy(jn->volume_name,dp.volumename);
 145   return True;
 146 }
 147
 148 /**********************************************************************
 149  Parse the contents of a symlink to verify if it is an msdfs referral
 150  A valid referral is of the form: msdfs:server1\share1,server2\share2
 151  **********************************************************************/
 152 static BOOL parse_symlink(char* buf,struct referral** preflist, int* refcount)
 153 {
 154   pstring temp;
 155   char* prot;
 156   char* alt_path[MAX_REFERRAL_COUNT];
 157   int count=0, i;
 158   struct referral* reflist;
 159
 160   pstrcpy(temp,buf);
 161
 162   prot = strtok(temp,":");
 163
 164   if(!strequal(prot, "msdfs"))
 165     return False;
 166
 167   /* It's an msdfs referral */
 168   if(!preflist)
 169     return True;
 170
 171   /* parse out the alternate paths */
 172   while(((alt_path[count] = strtok(NULL,",")) != NULL)
 173         && count<MAX_REFERRAL_COUNT)
 174     count++;
 175
 176   DEBUG(10,("parse_symlink: count=%d\n", count));
 177   reflist = *preflist = (struct referral*) malloc(count *
 178                                                   sizeof(struct referral));
 179   if(reflist == NULL)
 180     {
 181       DEBUG(0,("parse_symlink: Malloc failed!\n"));
 182       return False;
 183     }
 184
 185   for(i=0;i<count;i++)
 186     {
 187       /* replace / in the alternate path by a \ */
 188       char* p = strchr(alt_path[i],'/');
 189       if(p) *p = '\\';
 190
 191       pstrcpy(reflist[i].alternate_path, "\\");
 192       pstrcat(reflist[i].alternate_path, alt_path[i]);
 193       reflist[i].proximity = 0;
 194       reflist[i].ttl = REFERRAL_TTL;
 195       DEBUG(10, ("parse_symlink: Created alt path: %s\n",
 196                 reflist[i].alternate_path));
 197     }
 198
 199   if(refcount)
 200     *refcount = count;
 201
 202   return True;
 203 }
 204
 205 /**********************************************************************
 206  Returns true if the unix path is a valid msdfs symlink
 207  **********************************************************************/
 208 BOOL is_msdfs_link(connection_struct* conn, char* path)
 209 {
 210   SMB_STRUCT_STAT st;
 211   pstring referral;
 212   int referral_len = 0;
 213
 214   if(!path || !conn)
 215     return False;
 216
 217   strlower(path);
 218
 219   if(conn->vfs_ops.lstat(conn,dos_to_unix(path,False),&st) != 0)
 220     {
 221       DEBUG(5,("is_msdfs_link: %s does not exist.\n",path));
 222       return False;
 223     }
 224
 225   if(S_ISLNK(st.st_mode))
 226     {
 227       /* open the link and read it */
 228       referral_len = readlink(path, referral, sizeof(pstring));
 229       if(referral_len == -1)
 230         DEBUG(0,("is_msdfs_link: Error reading msdfs link %s: %s\n",
 231                  path, strerror(errno)));
 232
 233       referral[referral_len] = '\0';
 234       DEBUG(5,("is_msdfs_link: %s -> %s\n",path,referral));
 235       if(parse_symlink(referral, NULL, NULL))
 236         return True;
 237     }
 238   return False;
 239 }
 240
 241 /**********************************************************************
 242  Fills in the junction_map struct with the referrals from the
 243  symbolic link
 244  **********************************************************************/
 245 BOOL get_referred_path(struct junction_map* junction)
 246 {
 247   fstring path;
 248   pstring buf;
 249   SMB_STRUCT_STAT st;
 250
 251   if(!form_path_from_junction(junction, path, sizeof(path)))
 252     return False;
 253
 254   DEBUG(5,("get_referred_path: lstat target: %s\n", path));
 255
 256   if(lstat(dos_to_unix(path, False),&st) != 0)
 257     {
 258       DEBUG(5,("get_referred_path: %s does not exist.\n",path));
 259       return False;
 260     }
 261
 262   if(S_ISLNK(st.st_mode))
 263     {
 264       /* open the link and read it to get the dfs referral */
 265       readlink(path, buf, sizeof(buf));
 266       DEBUG(5,("get_referred_path: Referral: %s\n",buf));
 267       if(parse_symlink(buf, &junction->referral_list,
 268                        &junction->referral_count))
 269         return True;
 270     }
 271   return False;
 272 }
 273
 274 /**************************************************************
 275 Decides if given pathname is Dfs and if it should be redirected
 276 Converts pathname to non-dfs format if Dfs redirection not required
 277 **************************************************************/
 278 BOOL dfs_redirect(char* pathname, connection_struct* conn)
 279 {
 280   struct dfs_path dp;
 281   pstring temp;
 282   fstring path;
 283
 284   pstrcpy(temp,pathname);
 285
 286   if(!lp_msdfs_root(SNUM(conn)) )
 287     return False;
 288
 289   parse_dfs_path(pathname,&dp);
 290
 291   if(global_myname && (strcasecmp(global_myname,dp.hostname)!=0))
 292      return False;
 293
 294   /* check if need to redirect */
 295   fstrcpy(path, conn->connectpath);
 296   fstrcat(path, "/");
 297   fstrcat(path, dp.volumename);
 298   if(is_msdfs_link(conn, path))
 299     {
 300       DEBUG(4,("dfs_redirect: Redirecting %s\n",temp));
 301       return True;
 302     }
 303   else
 304     {
 305       create_nondfs_path(pathname,&dp);
 306       DEBUG(4,("dfs_redirect: Not redirecting %s. Converted to non-dfs pathname \'%s\'\n",
 307                temp,pathname));
 308       return False;
 309     }
 310 }
 311
 312 /*
 313   Special DFS redirect call for findfirst's.
 314   If the findfirst is for the dfs junction, then no redirection,
 315   if it is for the underlying directory contents, redirect.
 316   */
 317 BOOL dfs_findfirst_redirect(char* pathname, connection_struct* conn)
 318 {
 319   struct dfs_path dp;
 320
 321   pstring temp;
 322
 323   pstrcpy(temp,pathname);
 324
 325   /* Is the path Dfs-redirectable? */
 326   if(!dfs_redirect(temp,conn))
 327     {
 328       pstrcpy(pathname,temp);
 329       return False;
 330     }
 331
 332   parse_dfs_path(pathname,&dp);
 333   DEBUG(8,("dfs_findfirst_redirect: path %s is in Dfs. dp.restofthepath=.%s.\n",pathname,dp.restofthepath));
 334   if(*(dp.restofthepath))
 335     return True;
 336   else
 337     {
 338       create_nondfs_path(pathname,&dp);
 339       return False;
 340     }
 341 }
 342
 343 static int setup_ver2_dfs_referral(char* pathname, char** ppdata,
 344                                    struct junction_map* junction,
 345                                    BOOL self_referral)
 346 {
 347   char* pdata = *ppdata;
 348
 349   unsigned char uni_requestedpath[1024];
 350   int uni_reqpathoffset1,uni_reqpathoffset2;
 351   int uni_curroffset;
 352   int requestedpathlen=0;
 353   int offset;
 354   int reply_size = 0;
 355   int i=0;
 356
 357   DEBUG(10,("setting up version2 referral\nRequested path:\n"));
 358
 359   requestedpathlen = (dos_struni2(uni_requestedpath,pathname,512)+1)*2;
 360
 361   dump_data(10,uni_requestedpath,requestedpathlen);
 362
 363   DEBUG(10,("ref count = %u\n",junction->referral_count));
 364
 365   uni_reqpathoffset1 = REFERRAL_HEADER_SIZE +
 366     VERSION2_REFERRAL_SIZE * junction->referral_count;
 367
 368   uni_reqpathoffset2 = uni_reqpathoffset1 + requestedpathlen;
 369
 370   uni_curroffset = uni_reqpathoffset2 + requestedpathlen;
 371
 372   reply_size = REFERRAL_HEADER_SIZE + VERSION2_REFERRAL_SIZE*junction->referral_count +
 373     2 * requestedpathlen;
 374   DEBUG(10,("reply_size: %u\n",reply_size));
 375
 376   /* add up the unicode lengths of all the referral paths */
 377   for(i=0;i<junction->referral_count;i++)
 378     {
 379       DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
 380       reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
 381     }
 382
 383   DEBUG(10,("reply_size = %u\n",reply_size));
 384   /* add the unexplained 0x16 bytes */
 385   reply_size += 0x16;
 386
 387   pdata = *ppdata = Realloc(pdata,reply_size);
 388   if(pdata == NULL)
 389     {
 390       DEBUG(0,("malloc failed for Realloc!\n"));
 391       return -1;
 392     }
 393
 394   /* copy in the dfs requested paths.. required for offset calculations */
 395   memcpy(pdata+uni_reqpathoffset1,uni_requestedpath,requestedpathlen);
 396   memcpy(pdata+uni_reqpathoffset2,uni_requestedpath,requestedpathlen);
 397
 398
 399   /* create the header */
 400   SSVAL(pdata,0,requestedpathlen-2); /* path consumed */
 401   SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
 402   if(self_referral)
 403     SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
 404   else
 405     SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
 406
 407   offset = 8;
 408   /* add the referral elements */
 409   for(i=0;i<junction->referral_count;i++)
 410     {
 411       struct referral* ref = &(junction->referral_list[i]);
 412       int unilen;
 413
 414       SSVAL(pdata,offset,2); /* version 2 */
 415       SSVAL(pdata,offset+2,VERSION2_REFERRAL_SIZE);
 416       if(self_referral)
 417         SSVAL(pdata,offset+4,1);
 418       else
 419         SSVAL(pdata,offset+4,0);
 420       SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
 421       SIVAL(pdata,offset+8,ref->proximity);
 422       SIVAL(pdata,offset+12,ref->ttl);
 423
 424       SSVAL(pdata,offset+16,uni_reqpathoffset1-offset);
 425       SSVAL(pdata,offset+18,uni_reqpathoffset2-offset);
 426       /* copy referred path into current offset */
 427       unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
 428                 +1)*2;
 429       SSVAL(pdata,offset+20,uni_curroffset-offset);
 430
 431       uni_curroffset += unilen;
 432       offset += VERSION2_REFERRAL_SIZE;
 433     }
 434   /* add in the unexplained 22 (0x16) bytes at the end */
 435   memset(pdata+uni_curroffset,'\0',0x16);
 436   free(junction->referral_list);
 437   return reply_size;
 438 }
 439
 440 static int setup_ver3_dfs_referral(char* pathname, char** ppdata,
 441                                    struct junction_map* junction,
 442                                    BOOL self_referral)
 443 {
 444   char* pdata = *ppdata;
 445
 446   unsigned char uni_reqpath[1024];
 447   int uni_reqpathoffset1, uni_reqpathoffset2;
 448   int uni_curroffset;
 449   int reply_size = 0;
 450
 451   int reqpathlen = 0;
 452   int offset,i=0;
 453
 454   DEBUG(10,("setting up version3 referral\n"));
 455
 456   reqpathlen = (dos_struni2(uni_reqpath,pathname,512)+1)*2;
 457
 458   dump_data(10,uni_reqpath,reqpathlen);
 459
 460   uni_reqpathoffset1 = REFERRAL_HEADER_SIZE + VERSION3_REFERRAL_SIZE *
 461     junction->referral_count;
 462   uni_reqpathoffset2 = uni_reqpathoffset1 + reqpathlen;
 463   reply_size = uni_curroffset = uni_reqpathoffset2 + reqpathlen;
 464
 465   for(i=0;i<junction->referral_count;i++)
 466     {
 467       DEBUG(10,("referral %u : %s\n",i,junction->referral_list[i].alternate_path));
 468       reply_size += (strlen(junction->referral_list[i].alternate_path)+1)*2;
 469     }
 470
 471   pdata = *ppdata = Realloc(pdata,reply_size);
 472   if(pdata == NULL)
 473     {
 474       DEBUG(0,("version3 referral setup: malloc failed for Realloc!\n"));
 475       return -1;
 476     }
 477
 478   /* create the header */
 479   SSVAL(pdata,0,reqpathlen-2); /* path consumed */
 480   SSVAL(pdata,2,junction->referral_count); /* number of referral in this pkt */
 481   if(self_referral)
 482     SIVAL(pdata,4,DFSREF_REFERRAL_SERVER | DFSREF_STORAGE_SERVER);
 483   else
 484     SIVAL(pdata,4,DFSREF_STORAGE_SERVER);
 485
 486   /* copy in the reqpaths */
 487   memcpy(pdata+uni_reqpathoffset1,uni_reqpath,reqpathlen);
 488   memcpy(pdata+uni_reqpathoffset2,uni_reqpath,reqpathlen);
 489
 490   offset = 8;
 491   for(i=0;i<junction->referral_count;i++)
 492     {
 493       struct referral* ref = &(junction->referral_list[i]);
 494       int unilen;
 495
 496       SSVAL(pdata,offset,3); /* version 3 */
 497       SSVAL(pdata,offset+2,VERSION3_REFERRAL_SIZE);
 498       if(self_referral)
 499         SSVAL(pdata,offset+4,1);
 500       else
 501         SSVAL(pdata,offset+4,0);
 502
 503       SSVAL(pdata,offset+6,0); /* ref_flags :use path_consumed bytes? */
 504       SIVAL(pdata,offset+8,ref->ttl);
 505
 506       SSVAL(pdata,offset+12,uni_reqpathoffset1-offset);
 507       SSVAL(pdata,offset+14,uni_reqpathoffset2-offset);
 508       /* copy referred path into current offset */
 509       unilen = (dos_struni2(pdata+uni_curroffset,ref->alternate_path,512)
 510                 +1)*2;
 511       SSVAL(pdata,offset+16,uni_curroffset-offset);
 512       /* copy 0x10 bytes of 00's in the ServiceSite GUID */
 513       memset(pdata+offset+18,'\0',16);
 514
 515       uni_curroffset += unilen;
 516       offset += VERSION3_REFERRAL_SIZE;
 517     }
 518   free(junction->referral_list);
 519   return reply_size;
 520 }
 521
 522
 523
 524 /******************************************************************
 525  * Set up the Dfs referral for the dfs pathname
 526  ******************************************************************/
 527 int setup_dfs_referral(char* pathname, int max_referral_level,
 528                         char** ppdata)
 529 {
 530   struct junction_map junction;
 531
 532   BOOL self_referral;
 533
 534   int reply_size = 0;
 535
 536   ZERO_STRUCT(junction);
 537
 538   if(!create_junction(pathname, &junction))
 539     return -1;
 540
 541   /* get the junction entry */
 542   if(!get_referred_path(&junction))
 543     {
 544
 545       /* refer the same pathname, create a standard referral struct */
 546       struct referral* ref;
 547       self_referral = True;
 548       junction.referral_count = 1;
 549       if((ref = (struct referral*) malloc(sizeof(struct referral))) == NULL)
 550         {
 551           DEBUG(0,("malloc failed for referral\n"));
 552           return -1;
 553         }
 554
 555       pstrcpy(ref->alternate_path,pathname);
 556       ref->proximity = 0;
 557       ref->ttl = REFERRAL_TTL;
 558       junction.referral_list = ref;
 559     }
 560   else
 561     {
 562       self_referral = False;
 563       if( DEBUGLVL( 3 ) )
 564         {
 565           int i=0;
 566           dbgtext("setup_dfs_referral: Path %s to alternate path(s):",pathname);
 567           for(i=0;i<junction.referral_count;i++)
 568             dbgtext(" %s",junction.referral_list[i].alternate_path);
 569           dbgtext(".\n");
 570         }
 571     }
 572
 573   /* create the referral depeding on version */
 574   DEBUG(10,("max_referral_level :%d\n",max_referral_level));
 575   if(max_referral_level<2 || max_referral_level>3) max_referral_level = 2;
 576
 577   switch(max_referral_level)
 578     {
 579     case 2:
 580       {
 581         reply_size = setup_ver2_dfs_referral(pathname, ppdata, &junction,
 582                                              self_referral);
 583         break;
 584       }
 585     case 3:
 586       {
 587         reply_size = setup_ver3_dfs_referral(pathname, ppdata, &junction,
 588                                              self_referral);
 589         break;
 590       }
 591     default:
 592       {
 593         DEBUG(0,("setup_dfs_referral: Invalid dfs referral version: %d\n",
 594                  max_referral_level));
 595         return -1;
 596       }
 597     }
 598
 599   DEBUG(10,("DFS Referral pdata:\n"));
 600   dump_data(10,*ppdata,reply_size);
 601   return reply_size;
 602 }
 603
 604 int dfs_path_error(char* inbuf, char* outbuf)
 605 {
 606   enum remote_arch_types ra_type = get_remote_arch();
 607   BOOL NT_arch = ((ra_type==RA_WINNT) || (ra_type == RA_WIN2K));
 608   if(NT_arch && (global_client_caps & (CAP_NT_SMBS | CAP_STATUS32)) )
 609     {
 610       SSVAL(outbuf,smb_flg2,SVAL(outbuf,smb_flg2) | FLAGS2_32_BIT_ERROR_CODES);
 611       return(ERROR(0,0xc0000000|NT_STATUS_PATH_NOT_COVERED));
 612     }
 613   return(ERROR(ERRSRV,ERRbadpath));
 614 }
 615
 616 /**********************************************************************
 617  The following functions are called by the NETDFS RPC pipe functions
 618  **********************************************************************/
 619 BOOL create_msdfs_link(struct junction_map* jn, BOOL exists)
 620 {
 621   pstring path;
 622   pstring msdfs_link;
 623   int i=0;
 624
 625   if(!form_path_from_junction(jn, path, sizeof(path)))
 626     return False;
 627
 628   /* form the msdfs_link contents */
 629   pstrcpy(msdfs_link, "msdfs:");
 630   for(i=0; i<jn->referral_count; i++)
 631     {
 632       char* refpath = jn->referral_list[i].alternate_path;
 633
 634       trim_string(refpath, "\\", "\\");
 635       if(*refpath == '\0')
 636         continue;
 637
 638       if(i>0)
 639         pstrcat(msdfs_link, ",");
 640
 641       pstrcat(msdfs_link, refpath);
 642     }
 643
 644   DEBUG(5,("create_msdfs_link: Creating new msdfs link: %s -> %s\n",
 645            path, msdfs_link));
 646
 647   if(exists)
 648     if(unlink(path)!=0)
 649       return False;
 650
 651   if(symlink(msdfs_link, path) < 0)
 652     {
 653       DEBUG(1,("create_msdfs_link: symlink failed %s -> %s\nError: %s\n",
 654                path, msdfs_link, strerror(errno)));
 655       return False;
 656     }
 657   return True;
 658 }
 659
 660 BOOL remove_msdfs_link(struct junction_map* jn)
 661 {
 662   pstring path;
 663
 664   if(!form_path_from_junction(jn, path, sizeof(path)))
 665     return False;
 666
 667   if(unlink(path)!=0)
 668     return False;
 669
 670   return True;
 671 }
 672
 673 static BOOL form_junctions(int snum, struct junction_map* jn, int* jn_count)
 674 {
 675   int cnt = *jn_count;
 676   DIR *dirp;
 677   char* dname;
 678
 679   char* connect_path = lp_pathname(snum);
 680   char* service_name = lp_servicename(snum);
 681
 682   if(*connect_path == '\0')
 683     return False;
 684
 685   /* form a junction for the msdfs root - convention */
 686   /*
 687     pstrpcy(jn[cnt].service_name, service_name);
 688     jn[cnt].volume_name[0] = '\0';
 689     jn[cnt].referral_count = 1;
 690
 691     slprintf(alt_path,"\\\\%s\\%s", global_myname, service_name);
 692     jn[cnt].referral_l
 693     */
 694
 695   dirp = opendir(connect_path);
 696   if(!dirp)
 697     return False;
 698
 699   while((dname = readdirname(dirp)) != NULL)
 700     {
 701       SMB_STRUCT_STAT st;
 702       pstring pathreal;
 703       fstring buf;
 704       int buflen = 0;
 705       pstrcpy(pathreal, connect_path);
 706       pstrcat(pathreal, "/");
 707       pstrcat(pathreal, dname);
 708
 709       if(lstat(pathreal,&st) != 0)
 710         {
 711           DEBUG(4,("lstat error for %s: %s\n",pathreal, strerror(errno)));
 712           continue;
 713         }
 714      if(S_ISLNK(st.st_mode))
 715        {
 716          buflen = readlink(pathreal, buf, sizeof(fstring));
 717          buf[buflen] = '\0';
 718          if(parse_symlink(buf, &(jn[cnt].referral_list),
 719                           &(jn[cnt].referral_count)))
 720            {
 721              pstrcpy(jn[cnt].service_name, service_name);
 722              pstrcpy(jn[cnt].volume_name, dname);
 723              cnt++;
 724            }
 725        }
 726     }
 727
 728   closedir(dirp);
 729   *jn_count = cnt;
 730   return True;
 731 }
 732
 733 int enum_msdfs_links(struct junction_map* jn)
 734 {
 735   int i=0;
 736   int jn_count = 0;
 737
 738   if(!lp_host_msdfs())
 739     return -1;
 740
 741   for(i=0;*lp_servicename(i);i++)
 742     {
 743       if(lp_msdfs_root(i))
 744           form_junctions(i,jn,&jn_count);
 745     }
 746   return jn_count;
 747 }
 748
 749
 750 #else
 751 /* Stub functions if WITH_MSDFS not defined */
 752 int setup_dfs_referral(char* pathname, int max_referral_level,
 753                        char** ppdata)
 754 {
 755   return -1;
 756 }
 757
 758 BOOL is_msdfs_link(connection_struct* conn, char* path)
 759 {
 760   return False;
 761 }
 762
 763 #endif