source3/rpc_server/srv_dfs_nt.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  RPC Pipe client / server routines for Dfs
   4  *  Copyright (C) Shirish Kalele        2000.
   5  *  Copyright (C) Jeremy Allison        2001-2007.
   6  *  Copyright (C) Jelmer Vernooij       2005-2006.
   7  *
   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.
  12  *
  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.
  17  *
  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/>.
  20  */
  21
  22 /* This is the implementation of the dfs pipe. */
  23
  24 #include "includes.h"
  25 #include "../librpc/gen_ndr/srv_dfs.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_MSDFS
  29
  30 /* This function does not return a WERROR or NTSTATUS code but rather 1 if
  31    dfs exists, or 0 otherwise. */
  32
  33 void _dfs_GetManagerVersion(struct pipes_struct *p, struct dfs_GetManagerVersion *r)
  34 {
  35         if (lp_host_msdfs()) {
  36                 *r->out.version = DFS_MANAGER_VERSION_NT4;
  37         } else {
  38                 *r->out.version = (enum dfs_ManagerVersion)0;
  39         }
  40 }
  41
  42 WERROR _dfs_Add(struct pipes_struct *p, struct dfs_Add *r)
  43 {
  44         struct junction_map *jn = NULL;
  45         struct referral *old_referral_list = NULL;
  46         bool self_ref = False;
  47         int consumedcnt = 0;
  48         char *altpath = NULL;
  49         NTSTATUS status;
  50         TALLOC_CTX *ctx = talloc_tos();
  51
  52         if (p->server_info->utok.uid != sec_initial_uid()) {
  53                 DEBUG(10,("_dfs_add: uid != 0. Access denied.\n"));
  54                 return WERR_ACCESS_DENIED;
  55         }
  56
  57         jn = TALLOC_ZERO_P(ctx, struct junction_map);
  58         if (!jn) {
  59                 return WERR_NOMEM;
  60         }
  61
  62         DEBUG(5,("init_reply_dfs_add: Request to add %s -> %s\\%s.\n",
  63                 r->in.path, r->in.server, r->in.share));
  64
  65         altpath = talloc_asprintf(ctx, "%s\\%s",
  66                         r->in.server,
  67                         r->in.share);
  68         if (!altpath) {
  69                 return WERR_NOMEM;
  70         }
  71
  72         /* The following call can change the cwd. */
  73         status = get_referred_path(ctx, r->in.path, jn,
  74                         &consumedcnt, &self_ref);
  75         if(!NT_STATUS_IS_OK(status)) {
  76                 return ntstatus_to_werror(status);
  77         }
  78
  79         jn->referral_count += 1;
  80         old_referral_list = jn->referral_list;
  81
  82         if (jn->referral_count < 1) {
  83                 return WERR_NOMEM;
  84         }
  85
  86         jn->referral_list = TALLOC_ARRAY(ctx, struct referral, jn->referral_count);
  87         if(jn->referral_list == NULL) {
  88                 DEBUG(0,("init_reply_dfs_add: talloc failed for referral list!\n"));
  89                 return WERR_DFS_INTERNAL_ERROR;
  90         }
  91
  92         if(old_referral_list && jn->referral_list) {
  93                 memcpy(jn->referral_list, old_referral_list,
  94                                 sizeof(struct referral)*jn->referral_count-1);
  95         }
  96
  97         jn->referral_list[jn->referral_count-1].proximity = 0;
  98         jn->referral_list[jn->referral_count-1].ttl = REFERRAL_TTL;
  99         jn->referral_list[jn->referral_count-1].alternate_path = altpath;
 100
 101         if(!create_msdfs_link(jn)) {
 102                 return WERR_DFS_CANT_CREATE_JUNCT;
 103         }
 104
 105         return WERR_OK;
 106 }
 107
 108 WERROR _dfs_Remove(struct pipes_struct *p, struct dfs_Remove *r)
 109 {
 110         struct junction_map *jn = NULL;
 111         bool self_ref = False;
 112         int consumedcnt = 0;
 113         bool found = False;
 114         TALLOC_CTX *ctx = talloc_tos();
 115         char *altpath = NULL;
 116
 117         if (p->server_info->utok.uid != sec_initial_uid()) {
 118                 DEBUG(10,("_dfs_remove: uid != 0. Access denied.\n"));
 119                 return WERR_ACCESS_DENIED;
 120         }
 121
 122         jn = TALLOC_ZERO_P(ctx, struct junction_map);
 123         if (!jn) {
 124                 return WERR_NOMEM;
 125         }
 126
 127         if (r->in.servername && r->in.sharename) {
 128                 altpath = talloc_asprintf(ctx, "%s\\%s",
 129                         r->in.servername,
 130                         r->in.sharename);
 131                 if (!altpath) {
 132                         return WERR_NOMEM;
 133                 }
 134                 strlower_m(altpath);
 135                 DEBUG(5,("init_reply_dfs_remove: Request to remove %s -> %s\\%s.\n",
 136                         r->in.dfs_entry_path, r->in.servername, r->in.sharename));
 137         }
 138
 139         if(!NT_STATUS_IS_OK(get_referred_path(ctx, r->in.dfs_entry_path, jn,
 140                                 &consumedcnt, &self_ref))) {
 141                 return WERR_DFS_NO_SUCH_VOL;
 142         }
 143
 144         /* if no server-share pair given, remove the msdfs link completely */
 145         if(!r->in.servername && !r->in.sharename) {
 146                 if(!remove_msdfs_link(jn)) {
 147                         return WERR_DFS_NO_SUCH_VOL;
 148                 }
 149         } else {
 150                 int i=0;
 151                 /* compare each referral in the list with the one to remove */
 152                 DEBUG(10,("altpath: .%s. refcnt: %d\n", altpath, jn->referral_count));
 153                 for(i=0;i<jn->referral_count;i++) {
 154                         char *refpath = talloc_strdup(ctx,
 155                                         jn->referral_list[i].alternate_path);
 156                         if (!refpath) {
 157                                 return WERR_NOMEM;
 158                         }
 159                         trim_char(refpath, '\\', '\\');
 160                         DEBUG(10,("_dfs_remove:  refpath: .%s.\n", refpath));
 161                         if(strequal(refpath, altpath)) {
 162                                 *(jn->referral_list[i].alternate_path)='\0';
 163                                 DEBUG(10,("_dfs_remove: Removal request matches referral %s\n",
 164                                         refpath));
 165                                 found = True;
 166                         }
 167                 }
 168
 169                 if(!found) {
 170                         return WERR_DFS_NO_SUCH_SHARE;
 171                 }
 172
 173                 /* Only one referral, remove it */
 174                 if(jn->referral_count == 1) {
 175                         if(!remove_msdfs_link(jn)) {
 176                                 return WERR_DFS_NO_SUCH_VOL;
 177                         }
 178                 } else {
 179                         if(!create_msdfs_link(jn)) {
 180                                 return WERR_DFS_CANT_CREATE_JUNCT;
 181                         }
 182                 }
 183         }
 184
 185         return WERR_OK;
 186 }
 187
 188 static bool init_reply_dfs_info_1(TALLOC_CTX *mem_ctx, struct junction_map* j,struct dfs_Info1* dfs1)
 189 {
 190         dfs1->path = talloc_asprintf(mem_ctx,
 191                                 "\\\\%s\\%s\\%s", global_myname(),
 192                                 j->service_name, j->volume_name);
 193         if (dfs1->path == NULL)
 194                 return False;
 195
 196         DEBUG(5,("init_reply_dfs_info_1: initing entrypath: %s\n",dfs1->path));
 197         return True;
 198 }
 199
 200 static bool init_reply_dfs_info_2(TALLOC_CTX *mem_ctx, struct junction_map* j, struct dfs_Info2* dfs2)
 201 {
 202         dfs2->path = talloc_asprintf(mem_ctx,
 203                         "\\\\%s\\%s\\%s", global_myname(), j->service_name, j->volume_name);
 204         if (dfs2->path == NULL)
 205                 return False;
 206         dfs2->comment = talloc_strdup(mem_ctx, j->comment);
 207         dfs2->state = 1; /* set up state of dfs junction as OK */
 208         dfs2->num_stores = j->referral_count;
 209         return True;
 210 }
 211
 212 static bool init_reply_dfs_info_3(TALLOC_CTX *mem_ctx, struct junction_map* j, struct dfs_Info3* dfs3)
 213 {
 214         int ii;
 215         if (j->volume_name[0] == '\0')
 216                 dfs3->path = talloc_asprintf(mem_ctx, "\\\\%s\\%s",
 217                         global_myname(), j->service_name);
 218         else
 219                 dfs3->path = talloc_asprintf(mem_ctx, "\\\\%s\\%s\\%s", global_myname(),
 220                         j->service_name, j->volume_name);
 221
 222         if (dfs3->path == NULL)
 223                 return False;
 224
 225         dfs3->comment = talloc_strdup(mem_ctx, j->comment);
 226         dfs3->state = 1;
 227         dfs3->num_stores = j->referral_count;
 228
 229         /* also enumerate the stores */
 230         if (j->referral_count) {
 231                 dfs3->stores = TALLOC_ARRAY(mem_ctx, struct dfs_StorageInfo, j->referral_count);
 232                 if (!dfs3->stores)
 233                         return False;
 234                 memset(dfs3->stores, '\0', j->referral_count * sizeof(struct dfs_StorageInfo));
 235         } else {
 236                 dfs3->stores = NULL;
 237         }
 238
 239         for(ii=0;ii<j->referral_count;ii++) {
 240                 char* p;
 241                 char *path = NULL;
 242                 struct dfs_StorageInfo* stor = &(dfs3->stores[ii]);
 243                 struct referral* ref = &(j->referral_list[ii]);
 244
 245                 path = talloc_strdup(mem_ctx, ref->alternate_path);
 246                 if (!path) {
 247                         return False;
 248                 }
 249                 trim_char(path,'\\','\0');
 250                 p = strrchr_m(path,'\\');
 251                 if(p==NULL) {
 252                         DEBUG(4,("init_reply_dfs_info_3: invalid path: no \\ found in %s\n",path));
 253                         continue;
 254                 }
 255                 *p = '\0';
 256                 DEBUG(5,("storage %d: %s.%s\n",ii,path,p+1));
 257                 stor->state = 2; /* set all stores as ONLINE */
 258                 stor->server = talloc_strdup(mem_ctx, path);
 259                 stor->share = talloc_strdup(mem_ctx, p+1);
 260         }
 261         return True;
 262 }
 263
 264 static bool init_reply_dfs_info_100(TALLOC_CTX *mem_ctx, struct junction_map* j, struct dfs_Info100* dfs100)
 265 {
 266         dfs100->comment = talloc_strdup(mem_ctx, j->comment);
 267         return True;
 268 }
 269
 270 WERROR _dfs_Enum(struct pipes_struct *p, struct dfs_Enum *r)
 271 {
 272         struct junction_map *jn = NULL;
 273         size_t num_jn = 0;
 274         size_t i;
 275         TALLOC_CTX *ctx = talloc_tos();
 276
 277         jn = enum_msdfs_links(ctx, &num_jn);
 278         if (!jn || num_jn == 0) {
 279                 num_jn = 0;
 280                 jn = NULL;
 281         }
 282
 283         DEBUG(5,("_dfs_Enum: %u junctions found in Dfs, doing level %d\n",
 284                                 (unsigned int)num_jn, r->in.level));
 285
 286         *r->out.total = num_jn;
 287
 288         /* Create the return array */
 289         switch (r->in.level) {
 290         case 1:
 291                 if (num_jn) {
 292                         if ((r->out.info->e.info1->s = TALLOC_ARRAY(ctx, struct dfs_Info1, num_jn)) == NULL) {
 293                                 return WERR_NOMEM;
 294                         }
 295                 } else {
 296                         r->out.info->e.info1->s = NULL;
 297                 }
 298                 r->out.info->e.info1->count = num_jn;
 299                 break;
 300         case 2:
 301                 if (num_jn) {
 302                         if ((r->out.info->e.info2->s = TALLOC_ARRAY(ctx, struct dfs_Info2, num_jn)) == NULL) {
 303                                 return WERR_NOMEM;
 304                         }
 305                 } else {
 306                         r->out.info->e.info2->s = NULL;
 307                 }
 308                 r->out.info->e.info2->count = num_jn;
 309                 break;
 310         case 3:
 311                 if (num_jn) {
 312                         if ((r->out.info->e.info3->s = TALLOC_ARRAY(ctx, struct dfs_Info3, num_jn)) == NULL) {
 313                                 return WERR_NOMEM;
 314                         }
 315                 } else {
 316                         r->out.info->e.info3->s = NULL;
 317                 }
 318                 r->out.info->e.info3->count = num_jn;
 319                 break;
 320         default:
 321                 return WERR_INVALID_PARAM;
 322         }
 323
 324         for (i = 0; i < num_jn; i++) {
 325                 switch (r->in.level) {
 326                 case 1:
 327                         init_reply_dfs_info_1(ctx, &jn[i], &r->out.info->e.info1->s[i]);
 328                         break;
 329                 case 2:
 330                         init_reply_dfs_info_2(ctx, &jn[i], &r->out.info->e.info2->s[i]);
 331                         break;
 332                 case 3:
 333                         init_reply_dfs_info_3(ctx, &jn[i], &r->out.info->e.info3->s[i]);
 334                         break;
 335                 default:
 336                         return WERR_INVALID_PARAM;
 337                 }
 338         }
 339
 340         return WERR_OK;
 341 }
 342
 343 WERROR _dfs_GetInfo(struct pipes_struct *p, struct dfs_GetInfo *r)
 344 {
 345         int consumedcnt = strlen(r->in.dfs_entry_path);
 346         struct junction_map *jn = NULL;
 347         bool self_ref = False;
 348         TALLOC_CTX *ctx = talloc_tos();
 349         bool ret;
 350
 351         jn = TALLOC_ZERO_P(ctx, struct junction_map);
 352         if (!jn) {
 353                 return WERR_NOMEM;
 354         }
 355
 356         if(!create_junction(ctx, r->in.dfs_entry_path, jn)) {
 357                 return WERR_DFS_NO_SUCH_SERVER;
 358         }
 359
 360         /* The following call can change the cwd. */
 361         if(!NT_STATUS_IS_OK(get_referred_path(ctx, r->in.dfs_entry_path,
 362                                         jn, &consumedcnt, &self_ref)) ||
 363                         consumedcnt < strlen(r->in.dfs_entry_path)) {
 364                 return WERR_DFS_NO_SUCH_VOL;
 365         }
 366
 367         switch (r->in.level) {
 368                 case 1:
 369                         r->out.info->info1 = TALLOC_ZERO_P(ctx,struct dfs_Info1);
 370                         if (!r->out.info->info1) {
 371                                 return WERR_NOMEM;
 372                         }
 373                         ret = init_reply_dfs_info_1(ctx, jn, r->out.info->info1);
 374                         break;
 375                 case 2:
 376                         r->out.info->info2 = TALLOC_ZERO_P(ctx,struct dfs_Info2);
 377                         if (!r->out.info->info2) {
 378                                 return WERR_NOMEM;
 379                         }
 380                         ret = init_reply_dfs_info_2(ctx, jn, r->out.info->info2);
 381                         break;
 382                 case 3:
 383                         r->out.info->info3 = TALLOC_ZERO_P(ctx,struct dfs_Info3);
 384                         if (!r->out.info->info3) {
 385                                 return WERR_NOMEM;
 386                         }
 387                         ret = init_reply_dfs_info_3(ctx, jn, r->out.info->info3);
 388                         break;
 389                 case 100:
 390                         r->out.info->info100 = TALLOC_ZERO_P(ctx,struct dfs_Info100);
 391                         if (!r->out.info->info100) {
 392                                 return WERR_NOMEM;
 393                         }
 394                         ret = init_reply_dfs_info_100(ctx, jn, r->out.info->info100);
 395                         break;
 396                 default:
 397                         r->out.info->info1 = NULL;
 398                         return WERR_INVALID_PARAM;
 399         }
 400
 401         if (!ret)
 402                 return WERR_INVALID_PARAM;
 403
 404         return WERR_OK;
 405 }
 406
 407 WERROR _dfs_SetInfo(struct pipes_struct *p, struct dfs_SetInfo *r)
 408 {
 409         /* FIXME: Implement your code here */
 410         p->rng_fault_state = True;
 411         return WERR_NOT_SUPPORTED;
 412 }
 413
 414 WERROR _dfs_Rename(struct pipes_struct *p, struct dfs_Rename *r)
 415 {
 416         /* FIXME: Implement your code here */
 417         p->rng_fault_state = True;
 418         return WERR_NOT_SUPPORTED;
 419 }
 420
 421 WERROR _dfs_Move(struct pipes_struct *p, struct dfs_Move *r)
 422 {
 423         /* FIXME: Implement your code here */
 424         p->rng_fault_state = True;
 425         return WERR_NOT_SUPPORTED;
 426 }
 427
 428 WERROR _dfs_ManagerGetConfigInfo(struct pipes_struct *p, struct dfs_ManagerGetConfigInfo *r)
 429 {
 430         /* FIXME: Implement your code here */
 431         p->rng_fault_state = True;
 432         return WERR_NOT_SUPPORTED;
 433 }
 434
 435 WERROR _dfs_ManagerSendSiteInfo(struct pipes_struct *p, struct dfs_ManagerSendSiteInfo *r)
 436 {
 437         /* FIXME: Implement your code here */
 438         p->rng_fault_state = True;
 439         return WERR_NOT_SUPPORTED;
 440 }
 441
 442 WERROR _dfs_AddFtRoot(struct pipes_struct *p, struct dfs_AddFtRoot *r)
 443 {
 444         /* FIXME: Implement your code here */
 445         p->rng_fault_state = True;
 446         return WERR_NOT_SUPPORTED;
 447 }
 448
 449 WERROR _dfs_RemoveFtRoot(struct pipes_struct *p, struct dfs_RemoveFtRoot *r)
 450 {
 451         /* FIXME: Implement your code here */
 452         p->rng_fault_state = True;
 453         return WERR_NOT_SUPPORTED;
 454 }
 455
 456 WERROR _dfs_AddStdRoot(struct pipes_struct *p, struct dfs_AddStdRoot *r)
 457 {
 458         /* FIXME: Implement your code here */
 459         p->rng_fault_state = True;
 460         return WERR_NOT_SUPPORTED;
 461 }
 462
 463 WERROR _dfs_RemoveStdRoot(struct pipes_struct *p, struct dfs_RemoveStdRoot *r)
 464 {
 465         /* FIXME: Implement your code here */
 466         p->rng_fault_state = True;
 467         return WERR_NOT_SUPPORTED;
 468 }
 469
 470 WERROR _dfs_ManagerInitialize(struct pipes_struct *p, struct dfs_ManagerInitialize *r)
 471 {
 472         /* FIXME: Implement your code here */
 473         p->rng_fault_state = True;
 474         return WERR_NOT_SUPPORTED;
 475 }
 476
 477 WERROR _dfs_AddStdRootForced(struct pipes_struct *p, struct dfs_AddStdRootForced *r)
 478 {
 479         /* FIXME: Implement your code here */
 480         p->rng_fault_state = True;
 481         return WERR_NOT_SUPPORTED;
 482 }
 483
 484 WERROR _dfs_GetDcAddress(struct pipes_struct *p, struct dfs_GetDcAddress *r)
 485 {
 486         /* FIXME: Implement your code here */
 487         p->rng_fault_state = True;
 488         return WERR_NOT_SUPPORTED;
 489 }
 490
 491 WERROR _dfs_SetDcAddress(struct pipes_struct *p, struct dfs_SetDcAddress *r)
 492 {
 493         /* FIXME: Implement your code here */
 494         p->rng_fault_state = True;
 495         return WERR_NOT_SUPPORTED;
 496 }
 497
 498 WERROR _dfs_FlushFtTable(struct pipes_struct *p, struct dfs_FlushFtTable *r)
 499 {
 500         /* FIXME: Implement your code here */
 501         p->rng_fault_state = True;
 502         return WERR_NOT_SUPPORTED;
 503 }
 504
 505 WERROR _dfs_Add2(struct pipes_struct *p, struct dfs_Add2 *r)
 506 {
 507         /* FIXME: Implement your code here */
 508         p->rng_fault_state = True;
 509         return WERR_NOT_SUPPORTED;
 510 }
 511
 512 WERROR _dfs_Remove2(struct pipes_struct *p, struct dfs_Remove2 *r)
 513 {
 514         /* FIXME: Implement your code here */
 515         p->rng_fault_state = True;
 516         return WERR_NOT_SUPPORTED;
 517 }
 518
 519 WERROR _dfs_EnumEx(struct pipes_struct *p, struct dfs_EnumEx *r)
 520 {
 521         /* FIXME: Implement your code here */
 522         p->rng_fault_state = True;
 523         return WERR_NOT_SUPPORTED;
 524 }
 525
 526 WERROR _dfs_SetInfo2(struct pipes_struct *p, struct dfs_SetInfo2 *r)
 527 {
 528         /* FIXME: Implement your code here */
 529         p->rng_fault_state = True;
 530         return WERR_NOT_SUPPORTED;
 531 }