source3/rpc_client/cli_lsarpc.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    RPC pipe client
   4    Copyright (C) Tim Potter                        2000-2001,
   5    Copyright (C) Andrew Tridgell              1992-1997,2000,
   6    Copyright (C) Rafal Szczesniak                       2002
   7    Copyright (C) Jeremy Allison                         2005.
   8    Copyright (C) Michael Adam                           2007.
   9    Copyright (C) Guenther Deschner                      2008.
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26
  27 /** @defgroup lsa LSA - Local Security Architecture
  28  *  @ingroup rpc_client
  29  *
  30  * @{
  31  **/
  32
  33 /**
  34  * @file cli_lsarpc.c
  35  *
  36  * RPC client routines for the LSA RPC pipe.  LSA means "local
  37  * security authority", which is half of a password database.
  38  **/
  39
  40 /** Open a LSA policy handle
  41  *
  42  * @param cli Handle on an initialised SMB connection */
  43
  44 NTSTATUS rpccli_lsa_open_policy(struct rpc_pipe_client *cli,
  45                                 TALLOC_CTX *mem_ctx,
  46                                 bool sec_qos, uint32 des_access,
  47                                 struct policy_handle *pol)
  48 {
  49         struct lsa_ObjectAttribute attr;
  50         struct lsa_QosInfo qos;
  51         uint16_t system_name = '\\';
  52
  53         ZERO_STRUCT(attr);
  54
  55         attr.len        = 0x18;
  56
  57         if (sec_qos) {
  58                 qos.len                 = 0xc;
  59                 qos.impersonation_level = 2;
  60                 qos.context_mode        = 1;
  61                 qos.effective_only      = 0;
  62
  63                 attr.sec_qos            = &qos;
  64         }
  65
  66         return rpccli_lsa_OpenPolicy(cli, mem_ctx,
  67                                      &system_name,
  68                                      &attr,
  69                                      des_access,
  70                                      pol);
  71 }
  72
  73 /** Open a LSA policy handle
  74   *
  75   * @param cli Handle on an initialised SMB connection
  76   */
  77
  78 NTSTATUS rpccli_lsa_open_policy2(struct rpc_pipe_client *cli,
  79                                  TALLOC_CTX *mem_ctx, bool sec_qos,
  80                                  uint32 des_access, struct policy_handle *pol)
  81 {
  82         struct lsa_ObjectAttribute attr;
  83         struct lsa_QosInfo qos;
  84
  85         ZERO_STRUCT(attr);
  86
  87         attr.len        = 0x18;
  88
  89         if (sec_qos) {
  90                 qos.len                 = 0xc;
  91                 qos.impersonation_level = 2;
  92                 qos.context_mode        = 1;
  93                 qos.effective_only      = 0;
  94
  95                 attr.sec_qos            = &qos;
  96         }
  97
  98         return rpccli_lsa_OpenPolicy2(cli, mem_ctx,
  99                                       cli->srv_name_slash,
 100                                       &attr,
 101                                       des_access,
 102                                       pol);
 103 }
 104
 105 /* Lookup a list of sids
 106  *
 107  * internal version withOUT memory allocation of the target arrays.
 108  * this assumes suffciently sized arrays to store domains, names and types. */
 109
 110 static NTSTATUS rpccli_lsa_lookup_sids_noalloc(struct rpc_pipe_client *cli,
 111                                                TALLOC_CTX *mem_ctx,
 112                                                struct policy_handle *pol,
 113                                                int num_sids,
 114                                                const DOM_SID *sids,
 115                                                char **domains,
 116                                                char **names,
 117                                                enum lsa_SidType *types)
 118 {
 119         NTSTATUS result = NT_STATUS_OK;
 120         TALLOC_CTX *tmp_ctx = NULL;
 121         int i;
 122         struct lsa_SidArray sid_array;
 123         struct lsa_RefDomainList *ref_domains = NULL;
 124         struct lsa_TransNameArray lsa_names;
 125         uint32_t count = 0;
 126         uint16_t level = 1;
 127
 128         ZERO_STRUCT(lsa_names);
 129
 130         tmp_ctx = talloc_new(mem_ctx);
 131         if (!tmp_ctx) {
 132                 DEBUG(0, ("rpccli_lsa_lookup_sids_noalloc: out of memory!\n"));
 133                 result = NT_STATUS_UNSUCCESSFUL;
 134                 goto done;
 135         }
 136
 137         sid_array.num_sids = num_sids;
 138         sid_array.sids = TALLOC_ARRAY(mem_ctx, struct lsa_SidPtr, num_sids);
 139         if (!sid_array.sids) {
 140                 return NT_STATUS_NO_MEMORY;
 141         }
 142
 143         for (i = 0; i<num_sids; i++) {
 144                 sid_array.sids[i].sid = sid_dup_talloc(mem_ctx, &sids[i]);
 145                 if (!sid_array.sids[i].sid) {
 146                         return NT_STATUS_NO_MEMORY;
 147                 }
 148         }
 149
 150         result = rpccli_lsa_LookupSids(cli, mem_ctx,
 151                                        pol,
 152                                        &sid_array,
 153                                        &ref_domains,
 154                                        &lsa_names,
 155                                        level,
 156                                        &count);
 157
 158         DEBUG(10, ("LSA_LOOKUPSIDS returned '%s', mapped count = %d'\n",
 159                    nt_errstr(result), count));
 160
 161         if (!NT_STATUS_IS_OK(result) &&
 162             !NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) &&
 163             !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
 164         {
 165                 /* An actual error occured */
 166                 goto done;
 167         }
 168
 169         /* Return output parameters */
 170
 171         if (NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) ||
 172             (count == 0))
 173         {
 174                 for (i = 0; i < num_sids; i++) {
 175                         (names)[i] = NULL;
 176                         (domains)[i] = NULL;
 177                         (types)[i] = SID_NAME_UNKNOWN;
 178                 }
 179                 result = NT_STATUS_NONE_MAPPED;
 180                 goto done;
 181         }
 182
 183         for (i = 0; i < num_sids; i++) {
 184                 const char *name, *dom_name;
 185                 uint32_t dom_idx = lsa_names.names[i].sid_index;
 186
 187                 /* Translate optimised name through domain index array */
 188
 189                 if (dom_idx != 0xffffffff) {
 190
 191                         dom_name = ref_domains->domains[dom_idx].name.string;
 192                         name = lsa_names.names[i].name.string;
 193
 194                         if (name) {
 195                                 (names)[i] = talloc_strdup(mem_ctx, name);
 196                                 if ((names)[i] == NULL) {
 197                                         DEBUG(0, ("cli_lsa_lookup_sids_noalloc(): out of memory\n"));
 198                                         result = NT_STATUS_UNSUCCESSFUL;
 199                                         goto done;
 200                                 }
 201                         } else {
 202                                 (names)[i] = NULL;
 203                         }
 204                         (domains)[i] = talloc_strdup(mem_ctx, dom_name);
 205                         (types)[i] = lsa_names.names[i].sid_type;
 206                         if (((domains)[i] == NULL)) {
 207                                 DEBUG(0, ("cli_lsa_lookup_sids_noalloc(): out of memory\n"));
 208                                 result = NT_STATUS_UNSUCCESSFUL;
 209                                 goto done;
 210                         }
 211
 212                 } else {
 213                         (names)[i] = NULL;
 214                         (domains)[i] = NULL;
 215                         (types)[i] = SID_NAME_UNKNOWN;
 216                 }
 217         }
 218
 219 done:
 220         TALLOC_FREE(tmp_ctx);
 221         return result;
 222 }
 223
 224 /* Lookup a list of sids
 225  *
 226  * do it the right way: there is a limit (of 20480 for w2k3) entries
 227  * returned by this call. when the sids list contains more entries,
 228  * empty lists are returned. This version of lsa_lookup_sids passes
 229  * the list of sids in hunks of LOOKUP_SIDS_HUNK_SIZE to the lsa call. */
 230
 231 /* This constant defines the limit of how many sids to look up
 232  * in one call (maximum). the limit from the server side is
 233  * at 20480 for win2k3, but we keep it at a save 1000 for now. */
 234 #define LOOKUP_SIDS_HUNK_SIZE 1000
 235
 236 NTSTATUS rpccli_lsa_lookup_sids(struct rpc_pipe_client *cli,
 237                                 TALLOC_CTX *mem_ctx,
 238                                 struct policy_handle *pol,
 239                                 int num_sids,
 240                                 const DOM_SID *sids,
 241                                 char ***pdomains,
 242                                 char ***pnames,
 243                                 enum lsa_SidType **ptypes)
 244 {
 245         NTSTATUS result = NT_STATUS_OK;
 246         int sids_left = 0;
 247         int sids_processed = 0;
 248         const DOM_SID *hunk_sids = sids;
 249         char **hunk_domains;
 250         char **hunk_names;
 251         enum lsa_SidType *hunk_types;
 252         char **domains = NULL;
 253         char **names = NULL;
 254         enum lsa_SidType *types = NULL;
 255
 256         if (num_sids) {
 257                 if (!(domains = TALLOC_ARRAY(mem_ctx, char *, num_sids))) {
 258                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 259                         result = NT_STATUS_NO_MEMORY;
 260                         goto fail;
 261                 }
 262
 263                 if (!(names = TALLOC_ARRAY(mem_ctx, char *, num_sids))) {
 264                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 265                         result = NT_STATUS_NO_MEMORY;
 266                         goto fail;
 267                 }
 268
 269                 if (!(types = TALLOC_ARRAY(mem_ctx, enum lsa_SidType, num_sids))) {
 270                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 271                         result = NT_STATUS_NO_MEMORY;
 272                         goto fail;
 273                 }
 274         }
 275
 276         sids_left = num_sids;
 277         hunk_domains = domains;
 278         hunk_names = names;
 279         hunk_types = types;
 280
 281         while (sids_left > 0) {
 282                 int hunk_num_sids;
 283                 NTSTATUS hunk_result = NT_STATUS_OK;
 284
 285                 hunk_num_sids = ((sids_left > LOOKUP_SIDS_HUNK_SIZE)
 286                                 ? LOOKUP_SIDS_HUNK_SIZE
 287                                 : sids_left);
 288
 289                 DEBUG(10, ("rpccli_lsa_lookup_sids: processing items "
 290                            "%d -- %d of %d.\n",
 291                            sids_processed,
 292                            sids_processed + hunk_num_sids - 1,
 293                            num_sids));
 294
 295                 hunk_result = rpccli_lsa_lookup_sids_noalloc(cli,
 296                                                              mem_ctx,
 297                                                              pol,
 298                                                              hunk_num_sids,
 299                                                              hunk_sids,
 300                                                              hunk_domains,
 301                                                              hunk_names,
 302                                                              hunk_types);
 303
 304                 if (!NT_STATUS_IS_OK(hunk_result) &&
 305                     !NT_STATUS_EQUAL(hunk_result, STATUS_SOME_UNMAPPED) &&
 306                     !NT_STATUS_EQUAL(hunk_result, NT_STATUS_NONE_MAPPED))
 307                 {
 308                         /* An actual error occured */
 309                         result = hunk_result;
 310                         goto fail;
 311                 }
 312
 313                 /* adapt overall result */
 314                 if (( NT_STATUS_IS_OK(result) &&
 315                      !NT_STATUS_IS_OK(hunk_result))
 316                     ||
 317                     ( NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) &&
 318                      !NT_STATUS_EQUAL(hunk_result, NT_STATUS_NONE_MAPPED)))
 319                 {
 320                         result = STATUS_SOME_UNMAPPED;
 321                 }
 322
 323                 sids_left -= hunk_num_sids;
 324                 sids_processed += hunk_num_sids; /* only used in DEBUG */
 325                 hunk_sids += hunk_num_sids;
 326                 hunk_domains += hunk_num_sids;
 327                 hunk_names += hunk_num_sids;
 328                 hunk_types += hunk_num_sids;
 329         }
 330
 331         *pdomains = domains;
 332         *pnames = names;
 333         *ptypes = types;
 334         return result;
 335
 336 fail:
 337         TALLOC_FREE(domains);
 338         TALLOC_FREE(names);
 339         TALLOC_FREE(types);
 340         return result;
 341 }
 342
 343 /** Lookup a list of names */
 344
 345 NTSTATUS rpccli_lsa_lookup_names(struct rpc_pipe_client *cli,
 346                                  TALLOC_CTX *mem_ctx,
 347                                  struct policy_handle *pol, int num_names,
 348                                  const char **names,
 349                                  const char ***dom_names,
 350                                  int level,
 351                                  DOM_SID **sids,
 352                                  enum lsa_SidType **types)
 353 {
 354         NTSTATUS result;
 355         int i;
 356         struct lsa_String *lsa_names = NULL;
 357         struct lsa_RefDomainList *domains = NULL;
 358         struct lsa_TransSidArray sid_array;
 359         uint32_t count = 0;
 360
 361         ZERO_STRUCT(sid_array);
 362
 363         lsa_names = TALLOC_ARRAY(mem_ctx, struct lsa_String, num_names);
 364         if (!lsa_names) {
 365                 return NT_STATUS_NO_MEMORY;
 366         }
 367
 368         for (i=0; i<num_names; i++) {
 369                 init_lsa_String(&lsa_names[i], names[i]);
 370         }
 371
 372         result = rpccli_lsa_LookupNames(cli, mem_ctx,
 373                                         pol,
 374                                         num_names,
 375                                         lsa_names,
 376                                         &domains,
 377                                         &sid_array,
 378                                         level,
 379                                         &count);
 380
 381         if (!NT_STATUS_IS_OK(result) && NT_STATUS_V(result) !=
 382             NT_STATUS_V(STATUS_SOME_UNMAPPED)) {
 383
 384                 /* An actual error occured */
 385
 386                 goto done;
 387         }
 388
 389         /* Return output parameters */
 390
 391         if (count == 0) {
 392                 result = NT_STATUS_NONE_MAPPED;
 393                 goto done;
 394         }
 395
 396         if (num_names) {
 397                 if (!((*sids = TALLOC_ARRAY(mem_ctx, DOM_SID, num_names)))) {
 398                         DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 399                         result = NT_STATUS_NO_MEMORY;
 400                         goto done;
 401                 }
 402
 403                 if (!((*types = TALLOC_ARRAY(mem_ctx, enum lsa_SidType, num_names)))) {
 404                         DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 405                         result = NT_STATUS_NO_MEMORY;
 406                         goto done;
 407                 }
 408
 409                 if (dom_names != NULL) {
 410                         *dom_names = TALLOC_ARRAY(mem_ctx, const char *, num_names);
 411                         if (*dom_names == NULL) {
 412                                 DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 413                                 result = NT_STATUS_NO_MEMORY;
 414                                 goto done;
 415                         }
 416                 }
 417         } else {
 418                 *sids = NULL;
 419                 *types = NULL;
 420                 if (dom_names != NULL) {
 421                         *dom_names = NULL;
 422                 }
 423         }
 424
 425         for (i = 0; i < num_names; i++) {
 426                 uint32_t dom_idx = sid_array.sids[i].sid_index;
 427                 uint32_t dom_rid = sid_array.sids[i].rid;
 428                 DOM_SID *sid = &(*sids)[i];
 429
 430                 /* Translate optimised sid through domain index array */
 431
 432                 if (dom_idx == 0xffffffff) {
 433                         /* Nothing to do, this is unknown */
 434                         ZERO_STRUCTP(sid);
 435                         (*types)[i] = SID_NAME_UNKNOWN;
 436                         continue;
 437                 }
 438
 439                 sid_copy(sid, domains->domains[dom_idx].sid);
 440
 441                 if (dom_rid != 0xffffffff) {
 442                         sid_append_rid(sid, dom_rid);
 443                 }
 444
 445                 (*types)[i] = sid_array.sids[i].sid_type;
 446
 447                 if (dom_names == NULL) {
 448                         continue;
 449                 }
 450
 451                 (*dom_names)[i] = domains->domains[dom_idx].name.string;
 452         }
 453
 454  done:
 455
 456         return result;
 457 }