auth/auth_sam_reply.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Convert a server info struct into the form for PAC and NETLOGON replies
   5
   6    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2011
   7    Copyright (C) Stefan Metzmacher <metze@samba.org>  2005
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  21 */
  22
  23 #include "includes.h"
  24 #include "librpc/gen_ndr/auth.h"
  25 #include "libcli/security/security.h"
  26 #include "auth/auth_sam_reply.h"
  27
  28 NTSTATUS auth_convert_user_info_dc_sambaseinfo(TALLOC_CTX *mem_ctx,
  29                                               const struct auth_user_info_dc *user_info_dc,
  30                                               struct netr_SamBaseInfo **_sam)
  31 {
  32         NTSTATUS status;
  33         struct auth_user_info *info;
  34         struct netr_SamBaseInfo *sam = talloc_zero(mem_ctx, struct netr_SamBaseInfo);
  35         NT_STATUS_HAVE_NO_MEMORY(sam);
  36
  37         if (user_info_dc->num_sids > PRIMARY_USER_SID_INDEX) {
  38                 status = dom_sid_split_rid(sam, &user_info_dc->sids[PRIMARY_USER_SID_INDEX],
  39                                            &sam->domain_sid, &sam->rid);
  40                 if (!NT_STATUS_IS_OK(status)) {
  41                         return status;
  42                 }
  43         } else {
  44                 return NT_STATUS_INVALID_PARAMETER;
  45         }
  46
  47         if (user_info_dc->num_sids > PRIMARY_GROUP_SID_INDEX) {
  48                 status = dom_sid_split_rid(NULL, &user_info_dc->sids[PRIMARY_GROUP_SID_INDEX],
  49                                            NULL, &sam->primary_gid);
  50                 if (!NT_STATUS_IS_OK(status)) {
  51                         return status;
  52                 }
  53         } else {
  54                 /* if we have to encode something like SYSTEM (with no
  55                  * second SID in the token) then this is the only
  56                  * choice */
  57                 sam->primary_gid = sam->rid;
  58         }
  59
  60         info = user_info_dc->info;
  61
  62         sam->logon_time = info->last_logon;
  63         sam->logoff_time =  info->last_logoff;
  64         sam->kickoff_time = info->acct_expiry;
  65         sam->last_password_change = info->last_password_change;
  66         sam->allow_password_change = info->allow_password_change;
  67         sam->force_password_change = info->force_password_change;
  68
  69 #define _COPY_STRING_TALLOC(src_name, dst_name) do { \
  70         if (info->src_name != NULL) {\
  71                 sam->dst_name.string = talloc_strdup(sam, info->src_name); \
  72                 if (sam->dst_name.string == NULL) { \
  73                         return NT_STATUS_NO_MEMORY; \
  74                 } \
  75         } \
  76 } while(0)
  77         _COPY_STRING_TALLOC(account_name, account_name);
  78         _COPY_STRING_TALLOC(full_name, full_name);
  79         _COPY_STRING_TALLOC(logon_script, logon_script);
  80         _COPY_STRING_TALLOC(profile_path, profile_path);
  81         _COPY_STRING_TALLOC(home_directory, home_directory);
  82         _COPY_STRING_TALLOC(home_drive, home_drive);
  83         _COPY_STRING_TALLOC(logon_server, logon_server);
  84         _COPY_STRING_TALLOC(domain_name, logon_domain);
  85 #undef _COPY_STRING_TALLOC
  86
  87         sam->logon_count = info->logon_count;
  88         sam->bad_password_count = info->bad_password_count;
  89         sam->groups.count = 0;
  90         sam->groups.rids = NULL;
  91
  92         if (user_info_dc->num_sids > 2) {
  93                 size_t i;
  94                 sam->groups.rids = talloc_array(sam, struct samr_RidWithAttribute,
  95                                                 user_info_dc->num_sids);
  96
  97                 if (sam->groups.rids == NULL)
  98                         return NT_STATUS_NO_MEMORY;
  99
 100                 for (i=2; i<user_info_dc->num_sids; i++) {
 101                         struct dom_sid *group_sid = &user_info_dc->sids[i];
 102                         if (!dom_sid_in_domain(sam->domain_sid, group_sid)) {
 103                                 /* We handle this elsewhere */
 104                                 continue;
 105                         }
 106                         sam->groups.rids[sam->groups.count].rid =
 107                                 group_sid->sub_auths[group_sid->num_auths-1];
 108
 109                         sam->groups.rids[sam->groups.count].attributes =
 110                                 SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
 111                         sam->groups.count += 1;
 112                 }
 113         }
 114
 115         sam->user_flags = 0; /* w2k3 uses NETLOGON_EXTRA_SIDS | NETLOGON_NTLMV2_ENABLED */
 116         if (!user_info_dc->info->authenticated) {
 117                 sam->user_flags |= NETLOGON_GUEST;
 118         }
 119         sam->acct_flags = user_info_dc->info->acct_flags;
 120         sam->sub_auth_status = 0;
 121         sam->last_successful_logon = 0;
 122         sam->last_failed_logon = 0;
 123         sam->failed_logon_count = 0;
 124         sam->reserved = 0;
 125
 126         ZERO_STRUCT(sam->key);
 127         if (user_info_dc->user_session_key.length == sizeof(sam->key.key)) {
 128                 memcpy(sam->key.key, user_info_dc->user_session_key.data, sizeof(sam->key.key));
 129         }
 130
 131         ZERO_STRUCT(sam->LMSessKey);
 132         if (user_info_dc->lm_session_key.length == sizeof(sam->LMSessKey.key)) {
 133                 memcpy(sam->LMSessKey.key, user_info_dc->lm_session_key.data,
 134                        sizeof(sam->LMSessKey.key));
 135         }
 136
 137         *_sam = sam;
 138
 139         return NT_STATUS_OK;
 140 }
 141
 142 /* Note that the validity of the _sam6 structure is only as long as
 143  * the user_info_dc it was generated from */
 144 NTSTATUS auth_convert_user_info_dc_saminfo6(TALLOC_CTX *mem_ctx,
 145                                             const struct auth_user_info_dc *user_info_dc,
 146                                             struct netr_SamInfo6 **_sam6)
 147 {
 148         NTSTATUS status;
 149         struct netr_SamBaseInfo *sam = NULL;
 150         struct netr_SamInfo6 *sam6 = NULL;
 151         size_t i;
 152
 153         sam6 = talloc_zero(mem_ctx, struct netr_SamInfo6);
 154         if (sam6 == NULL) {
 155                 return NT_STATUS_NO_MEMORY;
 156         }
 157
 158         status = auth_convert_user_info_dc_sambaseinfo(sam6, user_info_dc, &sam);
 159         if (!NT_STATUS_IS_OK(status)) {
 160                 TALLOC_FREE(sam6);
 161                 return status;
 162         }
 163         sam6->base = *sam;
 164
 165         sam6->sids = talloc_array(sam6, struct netr_SidAttr,
 166                                   user_info_dc->num_sids);
 167         if (sam6->sids == NULL) {
 168                 TALLOC_FREE(sam6);
 169                 return NT_STATUS_NO_MEMORY;
 170         }
 171
 172         /* We don't put the user and group SIDs in there */
 173         for (i=2; i<user_info_dc->num_sids; i++) {
 174                 if (dom_sid_in_domain(sam->domain_sid, &user_info_dc->sids[i])) {
 175                         continue;
 176                 }
 177                 sam6->sids[sam6->sidcount].sid = dom_sid_dup(sam6->sids, &user_info_dc->sids[i]);
 178                 if (sam6->sids[sam6->sidcount].sid == NULL) {
 179                         TALLOC_FREE(sam6);
 180                         return NT_STATUS_NO_MEMORY;
 181                 }
 182                 sam6->sids[sam6->sidcount].attributes =
 183                         SE_GROUP_MANDATORY | SE_GROUP_ENABLED_BY_DEFAULT | SE_GROUP_ENABLED;
 184                 sam6->sidcount += 1;
 185         }
 186         if (sam6->sidcount) {
 187                 sam6->base.user_flags |= NETLOGON_EXTRA_SIDS;
 188         } else {
 189                 sam6->sids = NULL;
 190         }
 191
 192         if (user_info_dc->info->dns_domain_name != NULL) {
 193                 sam6->dns_domainname.string = talloc_strdup(sam6,
 194                                         user_info_dc->info->dns_domain_name);
 195                 if (sam6->dns_domainname.string == NULL) {
 196                         TALLOC_FREE(sam6);
 197                         return NT_STATUS_NO_MEMORY;
 198                 }
 199         }
 200
 201         if (user_info_dc->info->user_principal_name != NULL) {
 202                 sam6->principal_name.string = talloc_strdup(sam6,
 203                                         user_info_dc->info->user_principal_name);
 204                 if (sam6->principal_name.string == NULL) {
 205                         TALLOC_FREE(sam6);
 206                         return NT_STATUS_NO_MEMORY;
 207                 }
 208         }
 209
 210         *_sam6 = sam6;
 211         return NT_STATUS_OK;
 212 }
 213
 214 /* Note that the validity of the _sam2 structure is only as long as
 215  * the user_info_dc it was generated from */
 216 NTSTATUS auth_convert_user_info_dc_saminfo2(TALLOC_CTX *mem_ctx,
 217                                            const struct auth_user_info_dc *user_info_dc,
 218                                            struct netr_SamInfo2 **_sam2)
 219 {
 220         NTSTATUS status;
 221         struct netr_SamInfo6 *sam6 = NULL;
 222         struct netr_SamInfo2 *sam2 = NULL;
 223
 224         sam2 = talloc_zero(mem_ctx, struct netr_SamInfo2);
 225         if (sam2 == NULL) {
 226                 return NT_STATUS_NO_MEMORY;
 227         }
 228
 229         status = auth_convert_user_info_dc_saminfo6(sam2, user_info_dc, &sam6);
 230         if (!NT_STATUS_IS_OK(status)) {
 231                 TALLOC_FREE(sam2);
 232                 return status;
 233         }
 234         sam2->base      = sam6->base;
 235
 236         *_sam2 = sam2;
 237         return NT_STATUS_OK;
 238 }
 239
 240 /* Note that the validity of the _sam3 structure is only as long as
 241  * the user_info_dc it was generated from */
 242 NTSTATUS auth_convert_user_info_dc_saminfo3(TALLOC_CTX *mem_ctx,
 243                                            const struct auth_user_info_dc *user_info_dc,
 244                                            struct netr_SamInfo3 **_sam3)
 245 {
 246         NTSTATUS status;
 247         struct netr_SamInfo6 *sam6 = NULL;
 248         struct netr_SamInfo3 *sam3 = NULL;
 249
 250         sam3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
 251         if (sam3 == NULL) {
 252                 return NT_STATUS_NO_MEMORY;
 253         }
 254
 255         status = auth_convert_user_info_dc_saminfo6(sam3, user_info_dc, &sam6);
 256         if (!NT_STATUS_IS_OK(status)) {
 257                 TALLOC_FREE(sam3);
 258                 return status;
 259         }
 260         sam3->base      = sam6->base;
 261         sam3->sidcount  = sam6->sidcount;
 262         sam3->sids      = sam6->sids;
 263
 264         *_sam3 = sam3;
 265         return NT_STATUS_OK;
 266 }
 267
 268 /**
 269  * Make a user_info struct from the info3 or similar returned by a domain logon.
 270  *
 271  * The netr_SamInfo3 is also a key structure in the source3 auth subsystem
 272  */
 273
 274 NTSTATUS make_user_info_SamBaseInfo(TALLOC_CTX *mem_ctx,
 275                                     const char *account_name,
 276                                     const struct netr_SamBaseInfo *base,
 277                                     bool authenticated,
 278                                     struct auth_user_info **_user_info)
 279 {
 280         struct auth_user_info *info;
 281
 282         info = talloc_zero(mem_ctx, struct auth_user_info);
 283         NT_STATUS_HAVE_NO_MEMORY(info);
 284
 285         if (base->account_name.string) {
 286                 info->account_name = talloc_strdup(info, base->account_name.string);
 287         } else {
 288                 info->account_name = talloc_strdup(info, account_name);
 289         }
 290         NT_STATUS_HAVE_NO_MEMORY(info->account_name);
 291
 292         if (base->logon_domain.string) {
 293                 info->domain_name = talloc_strdup(info, base->logon_domain.string);
 294                 NT_STATUS_HAVE_NO_MEMORY(info->domain_name);
 295         }
 296
 297         if (base->full_name.string) {
 298                 info->full_name = talloc_strdup(info, base->full_name.string);
 299                 NT_STATUS_HAVE_NO_MEMORY(info->full_name);
 300         }
 301         if (base->logon_script.string) {
 302                 info->logon_script = talloc_strdup(info, base->logon_script.string);
 303                 NT_STATUS_HAVE_NO_MEMORY(info->logon_script);
 304         }
 305         if (base->profile_path.string) {
 306                 info->profile_path = talloc_strdup(info, base->profile_path.string);
 307                 NT_STATUS_HAVE_NO_MEMORY(info->profile_path);
 308         }
 309         if (base->home_directory.string) {
 310                 info->home_directory = talloc_strdup(info, base->home_directory.string);
 311                 NT_STATUS_HAVE_NO_MEMORY(info->home_directory);
 312         }
 313         if (base->home_drive.string) {
 314                 info->home_drive = talloc_strdup(info, base->home_drive.string);
 315                 NT_STATUS_HAVE_NO_MEMORY(info->home_drive);
 316         }
 317         if (base->logon_server.string) {
 318                 info->logon_server = talloc_strdup(info, base->logon_server.string);
 319                 NT_STATUS_HAVE_NO_MEMORY(info->logon_server);
 320         }
 321         info->last_logon = base->logon_time;
 322         info->last_logoff = base->logoff_time;
 323         info->acct_expiry = base->kickoff_time;
 324         info->last_password_change = base->last_password_change;
 325         info->allow_password_change = base->allow_password_change;
 326         info->force_password_change = base->force_password_change;
 327         info->logon_count = base->logon_count;
 328         info->bad_password_count = base->bad_password_count;
 329         info->acct_flags = base->acct_flags;
 330
 331         /* Only set authenticated if both NETLOGON_GUEST is not set, and authenticated is set */
 332         info->authenticated = (authenticated && (!(base->user_flags & NETLOGON_GUEST)));
 333
 334         *_user_info = info;
 335         return NT_STATUS_OK;
 336 }
 337
 338 /**
 339  * Make a user_info_dc struct from the info3 returned by a domain logon
 340  */
 341 NTSTATUS make_user_info_dc_netlogon_validation(TALLOC_CTX *mem_ctx,
 342                                               const char *account_name,
 343                                               uint16_t validation_level,
 344                                               const union netr_Validation *validation,
 345                                                bool authenticated,
 346                                               struct auth_user_info_dc **_user_info_dc)
 347 {
 348         NTSTATUS status;
 349         struct auth_user_info_dc *user_info_dc = NULL;
 350         const struct netr_SamBaseInfo *base = NULL;
 351         uint32_t sidcount = 0;
 352         const struct netr_SidAttr *sids = NULL;
 353         const char *dns_domainname = NULL;
 354         const char *principal = NULL;
 355         uint32_t i;
 356
 357         switch (validation_level) {
 358         case 2:
 359                 if (!validation || !validation->sam2) {
 360                         return NT_STATUS_INVALID_PARAMETER;
 361                 }
 362                 base = &validation->sam2->base;
 363                 break;
 364         case 3:
 365                 if (!validation || !validation->sam3) {
 366                         return NT_STATUS_INVALID_PARAMETER;
 367                 }
 368                 base = &validation->sam3->base;
 369                 sidcount = validation->sam3->sidcount;
 370                 sids = validation->sam3->sids;
 371                 break;
 372         case 6:
 373                 if (!validation || !validation->sam6) {
 374                         return NT_STATUS_INVALID_PARAMETER;
 375                 }
 376                 base = &validation->sam6->base;
 377                 sidcount = validation->sam6->sidcount;
 378                 sids = validation->sam6->sids;
 379                 dns_domainname = validation->sam6->dns_domainname.string;
 380                 principal = validation->sam6->principal_name.string;
 381                 break;
 382         default:
 383                 return NT_STATUS_INVALID_LEVEL;
 384         }
 385
 386         user_info_dc = talloc(mem_ctx, struct auth_user_info_dc);
 387         NT_STATUS_HAVE_NO_MEMORY(user_info_dc);
 388
 389         /*
 390            Here is where we should check the list of
 391            trusted domains, and verify that the SID
 392            matches.
 393         */
 394         if (!base->domain_sid) {
 395                 DEBUG(0, ("Cannot operate on a Netlogon Validation without a domain SID"));
 396                 return NT_STATUS_INVALID_PARAMETER;
 397         }
 398
 399         /* The IDL layer would be a better place to check this, but to
 400          * guard the integer addition below, we double-check */
 401         if (base->groups.count > 65535) {
 402                 return NT_STATUS_INVALID_PARAMETER;
 403         }
 404
 405         user_info_dc->num_sids = 2;
 406
 407         user_info_dc->sids = talloc_array(user_info_dc, struct dom_sid,  user_info_dc->num_sids + base->groups.count);
 408         NT_STATUS_HAVE_NO_MEMORY(user_info_dc->sids);
 409
 410         user_info_dc->sids[PRIMARY_USER_SID_INDEX] = *base->domain_sid;
 411         if (!sid_append_rid(&user_info_dc->sids[PRIMARY_USER_SID_INDEX], base->rid)) {
 412                 return NT_STATUS_INVALID_PARAMETER;
 413         }
 414
 415         user_info_dc->sids[PRIMARY_GROUP_SID_INDEX] = *base->domain_sid;
 416         if (!sid_append_rid(&user_info_dc->sids[PRIMARY_GROUP_SID_INDEX], base->primary_gid)) {
 417                 return NT_STATUS_INVALID_PARAMETER;
 418         }
 419
 420         for (i = 0; i < base->groups.count; i++) {
 421                 user_info_dc->sids[user_info_dc->num_sids] = *base->domain_sid;
 422                 if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids], base->groups.rids[i].rid)) {
 423                         return NT_STATUS_INVALID_PARAMETER;
 424                 }
 425                 user_info_dc->num_sids++;
 426         }
 427
 428         /* Copy 'other' sids.  We need to do sid filtering here to
 429            prevent possible elevation of privileges.  See:
 430
 431            http://www.microsoft.com/windows2000/techinfo/administration/security/sidfilter.asp
 432          */
 433
 434         /*
 435          * The IDL layer would be a better place to check this, but to
 436          * guard the integer addition below, we double-check
 437          */
 438         if (sidcount > UINT16_MAX) {
 439                 return NT_STATUS_INVALID_PARAMETER;
 440         }
 441
 442         if (sidcount > 0) {
 443                 struct dom_sid *dgrps = user_info_dc->sids;
 444                 size_t dgrps_count;
 445
 446                 dgrps_count = user_info_dc->num_sids + sidcount;
 447                 dgrps = talloc_realloc(user_info_dc, dgrps, struct dom_sid,
 448                                        dgrps_count);
 449                 if (dgrps == NULL) {
 450                         return NT_STATUS_NO_MEMORY;
 451                 }
 452
 453                 for (i = 0; i < sidcount; i++) {
 454                         if (sids[i].sid) {
 455                                 dgrps[user_info_dc->num_sids] = *sids[i].sid;
 456                                 user_info_dc->num_sids++;
 457                         }
 458                 }
 459
 460                 user_info_dc->sids = dgrps;
 461
 462                 /* Where are the 'global' sids?... */
 463         }
 464
 465         status = make_user_info_SamBaseInfo(user_info_dc, account_name, base, authenticated, &user_info_dc->info);
 466         if (!NT_STATUS_IS_OK(status)) {
 467                 return status;
 468         }
 469
 470         if (dns_domainname != NULL) {
 471                 user_info_dc->info->dns_domain_name = talloc_strdup(user_info_dc->info,
 472                                                                     dns_domainname);
 473                 if (user_info_dc->info->dns_domain_name == NULL) {
 474                         return NT_STATUS_NO_MEMORY;
 475                 }
 476         }
 477
 478         if (principal != NULL) {
 479                 user_info_dc->info->user_principal_name = talloc_strdup(user_info_dc->info,
 480                                                                         principal);
 481                 if (user_info_dc->info->user_principal_name == NULL) {
 482                         return NT_STATUS_NO_MEMORY;
 483                 }
 484         }
 485
 486         /* ensure we are never given NULL session keys */
 487
 488         if (all_zero(base->key.key, sizeof(base->key.key))) {
 489                 user_info_dc->user_session_key = data_blob(NULL, 0);
 490         } else {
 491                 user_info_dc->user_session_key = data_blob_talloc(user_info_dc, base->key.key, sizeof(base->key.key));
 492                 NT_STATUS_HAVE_NO_MEMORY(user_info_dc->user_session_key.data);
 493         }
 494
 495         if (all_zero(base->LMSessKey.key, sizeof(base->LMSessKey.key))) {
 496                 user_info_dc->lm_session_key = data_blob(NULL, 0);
 497         } else {
 498                 user_info_dc->lm_session_key = data_blob_talloc(user_info_dc, base->LMSessKey.key, sizeof(base->LMSessKey.key));
 499                 NT_STATUS_HAVE_NO_MEMORY(user_info_dc->lm_session_key.data);
 500         }
 501
 502         *_user_info_dc = user_info_dc;
 503         return NT_STATUS_OK;
 504 }
 505
 506 /**
 507  * Make a user_info_dc struct from the PAC_LOGON_INFO supplied in the krb5 logon
 508  */
 509 NTSTATUS make_user_info_dc_pac(TALLOC_CTX *mem_ctx,
 510                               const struct PAC_LOGON_INFO *pac_logon_info,
 511                               struct auth_user_info_dc **_user_info_dc)
 512 {
 513         uint32_t i;
 514         NTSTATUS nt_status;
 515         union netr_Validation validation;
 516         struct auth_user_info_dc *user_info_dc;
 517
 518         validation.sam3 = discard_const_p(struct netr_SamInfo3, &pac_logon_info->info3);
 519
 520         nt_status = make_user_info_dc_netlogon_validation(mem_ctx, "", 3, &validation,
 521                                                           true, /* This user was authenticated */
 522                                                           &user_info_dc);
 523         if (!NT_STATUS_IS_OK(nt_status)) {
 524                 return nt_status;
 525         }
 526
 527         if (pac_logon_info->res_groups.count > 0) {
 528                 size_t sidcount;
 529                 /* The IDL layer would be a better place to check this, but to
 530                  * guard the integer addition below, we double-check */
 531                 if (pac_logon_info->res_groups.count > 65535) {
 532                         talloc_free(user_info_dc);
 533                         return NT_STATUS_INVALID_PARAMETER;
 534                 }
 535
 536                 /*
 537                   Here is where we should check the list of
 538                   trusted domains, and verify that the SID
 539                   matches.
 540                 */
 541                 if (!pac_logon_info->res_group_dom_sid) {
 542                         DEBUG(0, ("Cannot operate on a PAC without a resource domain SID"));
 543                         return NT_STATUS_INVALID_PARAMETER;
 544                 }
 545
 546                 sidcount = user_info_dc->num_sids + pac_logon_info->res_groups.count;
 547                 user_info_dc->sids
 548                         = talloc_realloc(user_info_dc, user_info_dc->sids, struct dom_sid, sidcount);
 549                 if (user_info_dc->sids == NULL) {
 550                         TALLOC_FREE(user_info_dc);
 551                         return NT_STATUS_NO_MEMORY;
 552                 }
 553
 554                 for (i = 0; pac_logon_info->res_group_dom_sid && i < pac_logon_info->res_groups.count; i++) {
 555                         user_info_dc->sids[user_info_dc->num_sids] = *pac_logon_info->res_group_dom_sid;
 556                         if (!sid_append_rid(&user_info_dc->sids[user_info_dc->num_sids],
 557                                             pac_logon_info->res_groups.rids[i].rid)) {
 558                                 return NT_STATUS_INVALID_PARAMETER;
 559                         }
 560                         user_info_dc->num_sids++;
 561                 }
 562         }
 563         *_user_info_dc = user_info_dc;
 564         return NT_STATUS_OK;
 565 }