source/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                                 POLICY_HND *pol)
  48 {
  49         struct lsa_ObjectAttribute attr;
  50         struct lsa_QosInfo qos;
  51         uint16_t system_name = '\\';
  52
  53         if (sec_qos) {
  54                 init_lsa_sec_qos(&qos, 0xc, 2, 1, 0);
  55                 init_lsa_obj_attr(&attr,
  56                                   0x18,
  57                                   NULL,
  58                                   NULL,
  59                                   0,
  60                                   NULL,
  61                                   &qos);
  62         } else {
  63                 init_lsa_obj_attr(&attr,
  64                                   0x18,
  65                                   NULL,
  66                                   NULL,
  67                                   0,
  68                                   NULL,
  69                                   NULL);
  70         }
  71
  72         return rpccli_lsa_OpenPolicy(cli, mem_ctx,
  73                                      &system_name,
  74                                      &attr,
  75                                      des_access,
  76                                      pol);
  77 }
  78
  79 /** Open a LSA policy handle
  80   *
  81   * @param cli Handle on an initialised SMB connection
  82   */
  83
  84 NTSTATUS rpccli_lsa_open_policy2(struct rpc_pipe_client *cli,
  85                                  TALLOC_CTX *mem_ctx, bool sec_qos,
  86                                  uint32 des_access, POLICY_HND *pol)
  87 {
  88         struct lsa_ObjectAttribute attr;
  89         struct lsa_QosInfo qos;
  90         char *srv_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", cli->cli->desthost);
  91
  92         if (sec_qos) {
  93                 init_lsa_sec_qos(&qos, 0xc, 2, 1, 0);
  94                 init_lsa_obj_attr(&attr,
  95                                   0x18,
  96                                   NULL,
  97                                   NULL,
  98                                   0,
  99                                   NULL,
 100                                   &qos);
 101         } else {
 102                 init_lsa_obj_attr(&attr,
 103                                   0x18,
 104                                   NULL,
 105                                   NULL,
 106                                   0,
 107                                   NULL,
 108                                   NULL);
 109         }
 110
 111         return rpccli_lsa_OpenPolicy2(cli, mem_ctx,
 112                                       srv_name_slash,
 113                                       &attr,
 114                                       des_access,
 115                                       pol);
 116 }
 117
 118 /* Lookup a list of sids
 119  *
 120  * internal version withOUT memory allocation of the target arrays.
 121  * this assumes suffciently sized arrays to store domains, names and types. */
 122
 123 static NTSTATUS rpccli_lsa_lookup_sids_noalloc(struct rpc_pipe_client *cli,
 124                                                TALLOC_CTX *mem_ctx,
 125                                                POLICY_HND *pol,
 126                                                int num_sids,
 127                                                const DOM_SID *sids,
 128                                                char **domains,
 129                                                char **names,
 130                                                enum lsa_SidType *types)
 131 {
 132         NTSTATUS result = NT_STATUS_OK;
 133         TALLOC_CTX *tmp_ctx = NULL;
 134         int i;
 135         struct lsa_SidArray sid_array;
 136         struct lsa_RefDomainList *ref_domains = NULL;
 137         struct lsa_TransNameArray lsa_names;
 138         uint32_t count = 0;
 139         uint16_t level = 1;
 140
 141         ZERO_STRUCT(lsa_names);
 142
 143         tmp_ctx = talloc_new(mem_ctx);
 144         if (!tmp_ctx) {
 145                 DEBUG(0, ("rpccli_lsa_lookup_sids_noalloc: out of memory!\n"));
 146                 result = NT_STATUS_UNSUCCESSFUL;
 147                 goto done;
 148         }
 149
 150         sid_array.num_sids = num_sids;
 151         sid_array.sids = TALLOC_ARRAY(mem_ctx, struct lsa_SidPtr, num_sids);
 152         if (!sid_array.sids) {
 153                 return NT_STATUS_NO_MEMORY;
 154         }
 155
 156         for (i = 0; i<num_sids; i++) {
 157                 sid_array.sids[i].sid = sid_dup_talloc(mem_ctx, &sids[i]);
 158                 if (!sid_array.sids[i].sid) {
 159                         return NT_STATUS_NO_MEMORY;
 160                 }
 161         }
 162
 163         result = rpccli_lsa_LookupSids(cli, mem_ctx,
 164                                        pol,
 165                                        &sid_array,
 166                                        &ref_domains,
 167                                        &lsa_names,
 168                                        level,
 169                                        &count);
 170
 171         DEBUG(10, ("LSA_LOOKUPSIDS returned '%s', mapped count = %d'\n",
 172                    nt_errstr(result), count));
 173
 174         if (!NT_STATUS_IS_OK(result) &&
 175             !NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) &&
 176             !NT_STATUS_EQUAL(result, STATUS_SOME_UNMAPPED))
 177         {
 178                 /* An actual error occured */
 179                 goto done;
 180         }
 181
 182         /* Return output parameters */
 183
 184         if (NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) ||
 185             (count == 0))
 186         {
 187                 for (i = 0; i < num_sids; i++) {
 188                         (names)[i] = NULL;
 189                         (domains)[i] = NULL;
 190                         (types)[i] = SID_NAME_UNKNOWN;
 191                 }
 192                 result = NT_STATUS_NONE_MAPPED;
 193                 goto done;
 194         }
 195
 196         for (i = 0; i < num_sids; i++) {
 197                 const char *name, *dom_name;
 198                 uint32_t dom_idx = lsa_names.names[i].sid_index;
 199
 200                 /* Translate optimised name through domain index array */
 201
 202                 if (dom_idx != 0xffffffff) {
 203
 204                         dom_name = ref_domains->domains[dom_idx].name.string;
 205                         name = lsa_names.names[i].name.string;
 206
 207                         (names)[i] = talloc_strdup(mem_ctx, name);
 208                         (domains)[i] = talloc_strdup(mem_ctx, dom_name);
 209                         (types)[i] = lsa_names.names[i].sid_type;
 210
 211                         if (((names)[i] == NULL) || ((domains)[i] == NULL)) {
 212                                 DEBUG(0, ("cli_lsa_lookup_sids_noalloc(): out of memory\n"));
 213                                 result = NT_STATUS_UNSUCCESSFUL;
 214                                 goto done;
 215                         }
 216
 217                 } else {
 218                         (names)[i] = NULL;
 219                         (domains)[i] = NULL;
 220                         (types)[i] = SID_NAME_UNKNOWN;
 221                 }
 222         }
 223
 224 done:
 225         TALLOC_FREE(tmp_ctx);
 226         return result;
 227 }
 228
 229 /* Lookup a list of sids
 230  *
 231  * do it the right way: there is a limit (of 20480 for w2k3) entries
 232  * returned by this call. when the sids list contains more entries,
 233  * empty lists are returned. This version of lsa_lookup_sids passes
 234  * the list of sids in hunks of LOOKUP_SIDS_HUNK_SIZE to the lsa call. */
 235
 236 /* This constant defines the limit of how many sids to look up
 237  * in one call (maximum). the limit from the server side is
 238  * at 20480 for win2k3, but we keep it at a save 1000 for now. */
 239 #define LOOKUP_SIDS_HUNK_SIZE 1000
 240
 241 NTSTATUS rpccli_lsa_lookup_sids(struct rpc_pipe_client *cli,
 242                                 TALLOC_CTX *mem_ctx,
 243                                 POLICY_HND *pol,
 244                                 int num_sids,
 245                                 const DOM_SID *sids,
 246                                 char ***pdomains,
 247                                 char ***pnames,
 248                                 enum lsa_SidType **ptypes)
 249 {
 250         NTSTATUS result = NT_STATUS_OK;
 251         int sids_left = 0;
 252         int sids_processed = 0;
 253         const DOM_SID *hunk_sids = sids;
 254         char **hunk_domains;
 255         char **hunk_names;
 256         enum lsa_SidType *hunk_types;
 257         char **domains = NULL;
 258         char **names = NULL;
 259         enum lsa_SidType *types = NULL;
 260
 261         if (num_sids) {
 262                 if (!(domains = TALLOC_ARRAY(mem_ctx, char *, num_sids))) {
 263                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 264                         result = NT_STATUS_NO_MEMORY;
 265                         goto fail;
 266                 }
 267
 268                 if (!(names = TALLOC_ARRAY(mem_ctx, char *, num_sids))) {
 269                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 270                         result = NT_STATUS_NO_MEMORY;
 271                         goto fail;
 272                 }
 273
 274                 if (!(types = TALLOC_ARRAY(mem_ctx, enum lsa_SidType, num_sids))) {
 275                         DEBUG(0, ("rpccli_lsa_lookup_sids(): out of memory\n"));
 276                         result = NT_STATUS_NO_MEMORY;
 277                         goto fail;
 278                 }
 279         }
 280
 281         sids_left = num_sids;
 282         hunk_domains = domains;
 283         hunk_names = names;
 284         hunk_types = types;
 285
 286         while (sids_left > 0) {
 287                 int hunk_num_sids;
 288                 NTSTATUS hunk_result = NT_STATUS_OK;
 289
 290                 hunk_num_sids = ((sids_left > LOOKUP_SIDS_HUNK_SIZE)
 291                                 ? LOOKUP_SIDS_HUNK_SIZE
 292                                 : sids_left);
 293
 294                 DEBUG(10, ("rpccli_lsa_lookup_sids: processing items "
 295                            "%d -- %d of %d.\n",
 296                            sids_processed,
 297                            sids_processed + hunk_num_sids - 1,
 298                            num_sids));
 299
 300                 hunk_result = rpccli_lsa_lookup_sids_noalloc(cli,
 301                                                              mem_ctx,
 302                                                              pol,
 303                                                              hunk_num_sids,
 304                                                              hunk_sids,
 305                                                              hunk_domains,
 306                                                              hunk_names,
 307                                                              hunk_types);
 308
 309                 if (!NT_STATUS_IS_OK(hunk_result) &&
 310                     !NT_STATUS_EQUAL(hunk_result, STATUS_SOME_UNMAPPED) &&
 311                     !NT_STATUS_EQUAL(hunk_result, NT_STATUS_NONE_MAPPED))
 312                 {
 313                         /* An actual error occured */
 314                         result = hunk_result;
 315                         goto fail;
 316                 }
 317
 318                 /* adapt overall result */
 319                 if (( NT_STATUS_IS_OK(result) &&
 320                      !NT_STATUS_IS_OK(hunk_result))
 321                     ||
 322                     ( NT_STATUS_EQUAL(result, NT_STATUS_NONE_MAPPED) &&
 323                      !NT_STATUS_EQUAL(hunk_result, NT_STATUS_NONE_MAPPED)))
 324                 {
 325                         result = STATUS_SOME_UNMAPPED;
 326                 }
 327
 328                 sids_left -= hunk_num_sids;
 329                 sids_processed += hunk_num_sids; /* only used in DEBUG */
 330                 hunk_sids += hunk_num_sids;
 331                 hunk_domains += hunk_num_sids;
 332                 hunk_names += hunk_num_sids;
 333                 hunk_types += hunk_num_sids;
 334         }
 335
 336         *pdomains = domains;
 337         *pnames = names;
 338         *ptypes = types;
 339         return result;
 340
 341 fail:
 342         TALLOC_FREE(domains);
 343         TALLOC_FREE(names);
 344         TALLOC_FREE(types);
 345         return result;
 346 }
 347
 348 /** Lookup a list of names */
 349
 350 NTSTATUS rpccli_lsa_lookup_names(struct rpc_pipe_client *cli,
 351                                  TALLOC_CTX *mem_ctx,
 352                                  POLICY_HND *pol, int num_names,
 353                                  const char **names,
 354                                  const char ***dom_names,
 355                                  int level,
 356                                  DOM_SID **sids,
 357                                  enum lsa_SidType **types)
 358 {
 359         NTSTATUS result;
 360         int i;
 361         struct lsa_String *lsa_names = NULL;
 362         struct lsa_RefDomainList *domains = NULL;
 363         struct lsa_TransSidArray sid_array;
 364         uint32_t count = 0;
 365
 366         ZERO_STRUCT(sid_array);
 367
 368         lsa_names = TALLOC_ARRAY(mem_ctx, struct lsa_String, num_names);
 369         if (!lsa_names) {
 370                 return NT_STATUS_NO_MEMORY;
 371         }
 372
 373         for (i=0; i<num_names; i++) {
 374                 init_lsa_String(&lsa_names[i], names[i]);
 375         }
 376
 377         result = rpccli_lsa_LookupNames(cli, mem_ctx,
 378                                         pol,
 379                                         num_names,
 380                                         lsa_names,
 381                                         &domains,
 382                                         &sid_array,
 383                                         level,
 384                                         &count);
 385
 386         if (!NT_STATUS_IS_OK(result) && NT_STATUS_V(result) !=
 387             NT_STATUS_V(STATUS_SOME_UNMAPPED)) {
 388
 389                 /* An actual error occured */
 390
 391                 goto done;
 392         }
 393
 394         /* Return output parameters */
 395
 396         if (count == 0) {
 397                 result = NT_STATUS_NONE_MAPPED;
 398                 goto done;
 399         }
 400
 401         if (num_names) {
 402                 if (!((*sids = TALLOC_ARRAY(mem_ctx, DOM_SID, num_names)))) {
 403                         DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 404                         result = NT_STATUS_NO_MEMORY;
 405                         goto done;
 406                 }
 407
 408                 if (!((*types = TALLOC_ARRAY(mem_ctx, enum lsa_SidType, num_names)))) {
 409                         DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 410                         result = NT_STATUS_NO_MEMORY;
 411                         goto done;
 412                 }
 413
 414                 if (dom_names != NULL) {
 415                         *dom_names = TALLOC_ARRAY(mem_ctx, const char *, num_names);
 416                         if (*dom_names == NULL) {
 417                                 DEBUG(0, ("cli_lsa_lookup_sids(): out of memory\n"));
 418                                 result = NT_STATUS_NO_MEMORY;
 419                                 goto done;
 420                         }
 421                 }
 422         } else {
 423                 *sids = NULL;
 424                 *types = NULL;
 425                 if (dom_names != NULL) {
 426                         *dom_names = NULL;
 427                 }
 428         }
 429
 430         for (i = 0; i < num_names; i++) {
 431                 uint32_t dom_idx = sid_array.sids[i].sid_index;
 432                 uint32_t dom_rid = sid_array.sids[i].rid;
 433                 DOM_SID *sid = &(*sids)[i];
 434
 435                 /* Translate optimised sid through domain index array */
 436
 437                 if (dom_idx == 0xffffffff) {
 438                         /* Nothing to do, this is unknown */
 439                         ZERO_STRUCTP(sid);
 440                         (*types)[i] = SID_NAME_UNKNOWN;
 441                         continue;
 442                 }
 443
 444                 sid_copy(sid, domains->domains[dom_idx].sid);
 445
 446                 if (dom_rid != 0xffffffff) {
 447                         sid_append_rid(sid, dom_rid);
 448                 }
 449
 450                 (*types)[i] = sid_array.sids[i].sid_type;
 451
 452                 if (dom_names == NULL) {
 453                         continue;
 454                 }
 455
 456                 (*dom_names)[i] = domains->domains[dom_idx].name.string;
 457         }
 458
 459  done:
 460
 461         return result;
 462 }
 463
 464 #if 0
 465
 466 /** An example of how to use the routines in this file.  Fetch a DOMAIN
 467     sid. Does complete cli setup / teardown anonymously. */
 468
 469 bool fetch_domain_sid( char *domain, char *remote_machine, DOM_SID *psid)
 470 {
 471         struct cli_state cli;
 472         NTSTATUS result;
 473         POLICY_HND lsa_pol;
 474         bool ret = False;
 475
 476         ZERO_STRUCT(cli);
 477         if(cli_initialise(&cli) == False) {
 478                 DEBUG(0,("fetch_domain_sid: unable to initialize client connection.\n"));
 479                 return False;
 480         }
 481
 482         if(!resolve_name( remote_machine, &cli.dest_ip, 0x20)) {
 483                 DEBUG(0,("fetch_domain_sid: Can't resolve address for %s\n", remote_machine));
 484                 goto done;
 485         }
 486
 487         if (!cli_connect(&cli, remote_machine, &cli.dest_ip)) {
 488                 DEBUG(0,("fetch_domain_sid: unable to connect to SMB server on \
 489 machine %s. Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
 490                 goto done;
 491         }
 492
 493         if (!attempt_netbios_session_request(&cli, global_myname(), remote_machine, &cli.dest_ip)) {
 494                 DEBUG(0,("fetch_domain_sid: machine %s rejected the NetBIOS session request.\n",
 495                         remote_machine));
 496                 goto done;
 497         }
 498
 499         cli.protocol = PROTOCOL_NT1;
 500
 501         if (!cli_negprot(&cli)) {
 502                 DEBUG(0,("fetch_domain_sid: machine %s rejected the negotiate protocol. \
 503 Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
 504                 goto done;
 505         }
 506
 507         if (cli.protocol != PROTOCOL_NT1) {
 508                 DEBUG(0,("fetch_domain_sid: machine %s didn't negotiate NT protocol.\n",
 509                         remote_machine));
 510                 goto done;
 511         }
 512
 513         /*
 514          * Do an anonymous session setup.
 515          */
 516
 517         if (!cli_session_setup(&cli, "", "", 0, "", 0, "")) {
 518                 DEBUG(0,("fetch_domain_sid: machine %s rejected the session setup. \
 519 Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
 520                 goto done;
 521         }
 522
 523         if (!(cli.sec_mode & NEGOTIATE_SECURITY_USER_LEVEL)) {
 524                 DEBUG(0,("fetch_domain_sid: machine %s isn't in user level security mode\n",
 525                         remote_machine));
 526                 goto done;
 527         }
 528
 529         if (!cli_send_tconX(&cli, "IPC$", "IPC", "", 1)) {
 530                 DEBUG(0,("fetch_domain_sid: machine %s rejected the tconX on the IPC$ share. \
 531 Error was : %s.\n", remote_machine, cli_errstr(&cli) ));
 532                 goto done;
 533         }
 534
 535         /* Fetch domain sid */
 536
 537         if (!cli_nt_session_open(&cli, PI_LSARPC)) {
 538                 DEBUG(0, ("fetch_domain_sid: Error connecting to SAM pipe\n"));
 539                 goto done;
 540         }
 541
 542         result = cli_lsa_open_policy(&cli, cli.mem_ctx, True, SEC_RIGHTS_QUERY_VALUE, &lsa_pol);
 543         if (!NT_STATUS_IS_OK(result)) {
 544                 DEBUG(0, ("fetch_domain_sid: Error opening lsa policy handle. %s\n",
 545                         nt_errstr(result) ));
 546                 goto done;
 547         }
 548
 549         result = cli_lsa_query_info_policy(&cli, cli.mem_ctx, &lsa_pol, 5, domain, psid);
 550         if (!NT_STATUS_IS_OK(result)) {
 551                 DEBUG(0, ("fetch_domain_sid: Error querying lsa policy handle. %s\n",
 552                         nt_errstr(result) ));
 553                 goto done;
 554         }
 555
 556         ret = True;
 557
 558   done:
 559
 560         cli_shutdown(&cli);
 561         return ret;
 562 }
 563
 564 #endif