source4/auth/sam.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Password and authentication handling
   4    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2001-2004
   5    Copyright (C) Gerald Carter                             2003
   6    Copyright (C) Stefan Metzmacher                         2005
   7    Copyright (C) Matthias Dieter Wallnöfer                 2009
   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 "system/time.h"
  25 #include "auth/auth.h"
  26 #include <ldb.h>
  27 #include "dsdb/samdb/samdb.h"
  28 #include "libcli/security/security.h"
  29 #include "auth/auth_sam.h"
  30 #include "dsdb/common/util.h"
  31
  32 #define KRBTGT_ATTRS \
  33         /* required for the krb5 kdc */         \
  34         "objectClass",                          \
  35         "sAMAccountName",                       \
  36         "userPrincipalName",                    \
  37         "servicePrincipalName",                 \
  38         "msDS-KeyVersionNumber",                \
  39         "msDS-SecondaryKrbTgtNumber",           \
  40         "msDS-SupportedEncryptionTypes",        \
  41         "supplementalCredentials",              \
  42                                                 \
  43         /* passwords */                         \
  44         "dBCSPwd",                              \
  45         "unicodePwd",                           \
  46                                                 \
  47         "userAccountControl",                   \
  48         "objectSid",                            \
  49                                                 \
  50         "pwdLastSet",                           \
  51         "accountExpires"
  52
  53 const char *krbtgt_attrs[] = {
  54         KRBTGT_ATTRS, NULL
  55 };
  56
  57 const char *server_attrs[] = {
  58         KRBTGT_ATTRS, NULL
  59 };
  60
  61 const char *user_attrs[] = {
  62         KRBTGT_ATTRS,
  63
  64         "logonHours",
  65
  66         /* check 'allowed workstations' */
  67         "userWorkstations",
  68
  69         /* required for server_info, not access control: */
  70         "displayName",
  71         "scriptPath",
  72         "profilePath",
  73         "homeDirectory",
  74         "homeDrive",
  75         "lastLogon",
  76         "lastLogoff",
  77         "accountExpires",
  78         "badPwdCount",
  79         "logonCount",
  80         "primaryGroupID",
  81         "memberOf",
  82         NULL,
  83 };
  84
  85 /****************************************************************************
  86  Check if a user is allowed to logon at this time. Note this is the
  87  servers local time, as logon hours are just specified as a weekly
  88  bitmask.
  89 ****************************************************************************/
  90
  91 static bool logon_hours_ok(struct ldb_message *msg, const char *name_for_logs)
  92 {
  93         /* In logon hours first bit is Sunday from 12AM to 1AM */
  94         const struct ldb_val *hours;
  95         struct tm *utctime;
  96         time_t lasttime;
  97         const char *asct;
  98         uint8_t bitmask, bitpos;
  99
 100         hours = ldb_msg_find_ldb_val(msg, "logonHours");
 101         if (!hours) {
 102                 DEBUG(5,("logon_hours_ok: No hours restrictions for user %s\n", name_for_logs));
 103                 return true;
 104         }
 105
 106         if (hours->length != 168/8) {
 107                 DEBUG(5,("logon_hours_ok: malformed logon hours restrictions for user %s\n", name_for_logs));
 108                 return true;
 109         }
 110
 111         lasttime = time(NULL);
 112         utctime = gmtime(&lasttime);
 113         if (!utctime) {
 114                 DEBUG(1, ("logon_hours_ok: failed to get gmtime. Failing logon for user %s\n",
 115                         name_for_logs));
 116                 return false;
 117         }
 118
 119         /* find the corresponding byte and bit */
 120         bitpos = (utctime->tm_wday * 24 + utctime->tm_hour) % 168;
 121         bitmask = 1 << (bitpos % 8);
 122
 123         if (! (hours->data[bitpos/8] & bitmask)) {
 124                 struct tm *t = localtime(&lasttime);
 125                 if (!t) {
 126                         asct = "INVALID TIME";
 127                 } else {
 128                         asct = asctime(t);
 129                         if (!asct) {
 130                                 asct = "INVALID TIME";
 131                         }
 132                 }
 133
 134                 DEBUG(1, ("logon_hours_ok: Account for user %s not allowed to "
 135                           "logon at this time (%s).\n",
 136                           name_for_logs, asct ));
 137                 return false;
 138         }
 139
 140         asct = asctime(utctime);
 141         DEBUG(5,("logon_hours_ok: user %s allowed to logon at this time (%s)\n",
 142                 name_for_logs, asct ? asct : "UNKNOWN TIME" ));
 143
 144         return true;
 145 }
 146
 147 /****************************************************************************
 148  Do a specific test for a SAM_ACCOUNT being valid for this connection
 149  (ie not disabled, expired and the like).
 150 ****************************************************************************/
 151 _PUBLIC_ NTSTATUS authsam_account_ok(TALLOC_CTX *mem_ctx,
 152                                      struct ldb_context *sam_ctx,
 153                                      uint32_t logon_parameters,
 154                                      struct ldb_dn *domain_dn,
 155                                      struct ldb_message *msg,
 156                                      const char *logon_workstation,
 157                                      const char *name_for_logs,
 158                                      bool allow_domain_trust,
 159                                      bool password_change)
 160 {
 161         uint16_t acct_flags;
 162         const char *workstation_list;
 163         NTTIME acct_expiry;
 164         NTTIME must_change_time;
 165
 166         NTTIME now;
 167         DEBUG(4,("authsam_account_ok: Checking SMB password for user %s\n", name_for_logs));
 168
 169         acct_flags = samdb_result_acct_flags(sam_ctx, mem_ctx, msg, domain_dn);
 170
 171         acct_expiry = samdb_result_account_expires(msg);
 172
 173         /* Check for when we must change this password, taking the
 174          * userAccountControl flags into account */
 175         must_change_time = samdb_result_force_password_change(sam_ctx, mem_ctx,
 176                                                               domain_dn, msg);
 177
 178         workstation_list = ldb_msg_find_attr_as_string(msg, "userWorkstations", NULL);
 179
 180         /* Quit if the account was disabled. */
 181         if (acct_flags & ACB_DISABLED) {
 182                 DEBUG(2,("authsam_account_ok: Account for user '%s' was disabled.\n", name_for_logs));
 183                 return NT_STATUS_ACCOUNT_DISABLED;
 184         }
 185
 186         /* Quit if the account was locked out. */
 187         if (acct_flags & ACB_AUTOLOCK) {
 188                 DEBUG(2,("authsam_account_ok: Account for user %s was locked out.\n", name_for_logs));
 189                 return NT_STATUS_ACCOUNT_LOCKED_OUT;
 190         }
 191
 192         /* Test account expire time */
 193         unix_to_nt_time(&now, time(NULL));
 194         if (now > acct_expiry) {
 195                 DEBUG(2,("authsam_account_ok: Account for user '%s' has expired.\n", name_for_logs));
 196                 DEBUG(3,("authsam_account_ok: Account expired at '%s'.\n",
 197                          nt_time_string(mem_ctx, acct_expiry)));
 198                 return NT_STATUS_ACCOUNT_EXPIRED;
 199         }
 200
 201         /* check for immediate expiry "must change at next logon" (but not if this is a password change request) */
 202         if ((must_change_time == 0) && !password_change) {
 203                 DEBUG(2,("sam_account_ok: Account for user '%s' password must change!.\n",
 204                          name_for_logs));
 205                 return NT_STATUS_PASSWORD_MUST_CHANGE;
 206         }
 207
 208         /* check for expired password (but not if this is a password change request) */
 209         if ((must_change_time < now) && !password_change) {
 210                 DEBUG(2,("sam_account_ok: Account for user '%s' password expired!.\n",
 211                          name_for_logs));
 212                 DEBUG(2,("sam_account_ok: Password expired at '%s' unix time.\n",
 213                          nt_time_string(mem_ctx, must_change_time)));
 214                 return NT_STATUS_PASSWORD_EXPIRED;
 215         }
 216
 217         /* Test workstation. Workstation list is comma separated. */
 218         if (logon_workstation && workstation_list && *workstation_list) {
 219                 bool invalid_ws = true;
 220                 int i;
 221                 const char **workstations = (const char **)str_list_make(mem_ctx, workstation_list, ",");
 222
 223                 for (i = 0; workstations && workstations[i]; i++) {
 224                         DEBUG(10,("sam_account_ok: checking for workstation match '%s' and '%s'\n",
 225                                   workstations[i], logon_workstation));
 226
 227                         if (strequal(workstations[i], logon_workstation)) {
 228                                 invalid_ws = false;
 229                                 break;
 230                         }
 231                 }
 232
 233                 talloc_free(workstations);
 234
 235                 if (invalid_ws) {
 236                         return NT_STATUS_INVALID_WORKSTATION;
 237                 }
 238         }
 239
 240         if (!logon_hours_ok(msg, name_for_logs)) {
 241                 return NT_STATUS_INVALID_LOGON_HOURS;
 242         }
 243
 244         if (!allow_domain_trust) {
 245                 if (acct_flags & ACB_DOMTRUST) {
 246                         DEBUG(2,("sam_account_ok: Domain trust account %s denied by server\n", name_for_logs));
 247                         return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
 248                 }
 249         }
 250         if (!(logon_parameters & MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT)) {
 251                 if (acct_flags & ACB_SVRTRUST) {
 252                         DEBUG(2,("sam_account_ok: Server trust account %s denied by server\n", name_for_logs));
 253                         return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
 254                 }
 255         }
 256         if (!(logon_parameters & MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT)) {
 257                 /* TODO: this fails with current solaris client. We
 258                    need to work with Gordon to work out why */
 259                 if (acct_flags & ACB_WSTRUST) {
 260                         DEBUG(4,("sam_account_ok: Wksta trust account %s denied by server\n", name_for_logs));
 261                         return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
 262                 }
 263         }
 264
 265         return NT_STATUS_OK;
 266 }
 267
 268 /* This function tests if a SID structure "sids" contains the SID "sid" */
 269 static bool sids_contains_sid(const struct dom_sid **sids,
 270                               const unsigned int num_sids,
 271                               const struct dom_sid *sid)
 272 {
 273         unsigned int i;
 274
 275         for (i = 0; i < num_sids; i++) {
 276                 if (dom_sid_equal(sids[i], sid))
 277                         return true;
 278         }
 279         return false;
 280 }
 281
 282
 283 /*
 284  * This function generates the transitive closure of a given SAM object "dn_val"
 285  * (it basically expands nested memberships).
 286  * If the object isn't located in the "res_sids" structure yet and the
 287  * "only_childs" flag is false, we add it to "res_sids".
 288  * Then we've always to consider the "memberOf" attributes. We invoke the
 289  * function recursively on each of it with the "only_childs" flag set to
 290  * "false".
 291  * The "only_childs" flag is particularly useful if you have a user object and
 292  * want to include all it's groups (referenced with "memberOf") but not itself
 293  * or considering if that object matches the filter.
 294  *
 295  * At the beginning "res_sids" should reference to a NULL pointer.
 296  */
 297 NTSTATUS authsam_expand_nested_groups(struct ldb_context *sam_ctx,
 298                                       struct ldb_val *dn_val, const bool only_childs, const char *filter,
 299                                       TALLOC_CTX *res_sids_ctx, struct dom_sid ***res_sids,
 300                                       unsigned int *num_res_sids)
 301 {
 302         const char * const attrs[] = { "memberOf", NULL };
 303         unsigned int i;
 304         int ret;
 305         bool already_there;
 306         struct ldb_dn *dn;
 307         struct dom_sid sid;
 308         TALLOC_CTX *tmp_ctx;
 309         struct ldb_result *res;
 310         NTSTATUS status;
 311         const struct ldb_message_element *el;
 312
 313         if (*res_sids == NULL) {
 314                 *num_res_sids = 0;
 315         }
 316
 317         tmp_ctx = talloc_new(res_sids_ctx);
 318
 319         dn = ldb_dn_from_ldb_val(tmp_ctx, sam_ctx, dn_val);
 320         if (dn == NULL) {
 321                 talloc_free(tmp_ctx);
 322                 DEBUG(0, (__location__ ": we failed parsing DN %*.*s, so we cannot calculate the group token\n",
 323                           (int)dn_val->length, (int)dn_val->length, dn_val->data));
 324                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 325         }
 326
 327         status = dsdb_get_extended_dn_sid(dn, &sid, "SID");
 328         if (!NT_STATUS_IS_OK(status)) {
 329                 DEBUG(0, (__location__ ": when parsing DN %s we failed to find our SID component, so we cannot calculate the group token: %s\n",
 330                           ldb_dn_get_extended_linearized(tmp_ctx, dn, 1),
 331                           nt_errstr(status)));
 332                 talloc_free(tmp_ctx);
 333                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 334         }
 335
 336         if (!sam_ctx) {
 337                 DEBUG(0, ("No SAM available, cannot determine local groups\n"));
 338                 talloc_free(tmp_ctx);
 339                 return NT_STATUS_INVALID_SYSTEM_SERVICE;
 340         }
 341
 342         if (only_childs) {
 343                 ret = dsdb_search_dn(sam_ctx, tmp_ctx, &res, dn, attrs,
 344                                      DSDB_SEARCH_SHOW_EXTENDED_DN);
 345         } else {
 346                 /* This is an O(n^2) linear search */
 347                 already_there = sids_contains_sid((const struct dom_sid**) *res_sids,
 348                                                   *num_res_sids, &sid);
 349                 if (already_there) {
 350                         return NT_STATUS_OK;
 351                 }
 352
 353                 ret = dsdb_search(sam_ctx, tmp_ctx, &res, dn, LDB_SCOPE_BASE,
 354                                   attrs, DSDB_SEARCH_SHOW_EXTENDED_DN, "%s",
 355                                   filter);
 356         }
 357
 358         if (ret == LDB_ERR_NO_SUCH_OBJECT) {
 359                 talloc_free(tmp_ctx);
 360                 return NT_STATUS_OK;
 361         }
 362
 363         if (ret != LDB_SUCCESS) {
 364                 DEBUG(1, (__location__ ": dsdb_search for %s failed: %s\n",
 365                           ldb_dn_get_extended_linearized(tmp_ctx, dn, 1),
 366                           ldb_errstring(sam_ctx)));
 367                 talloc_free(tmp_ctx);
 368                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 369         }
 370
 371         /* We may get back 0 results, if the SID didn't match the filter - such as it wasn't a domain group, for example */
 372         if (res->count != 1) {
 373                 talloc_free(tmp_ctx);
 374                 return NT_STATUS_OK;
 375         }
 376
 377         /* We only apply this test once we know the SID matches the filter */
 378         if (!only_childs) {
 379                 *res_sids = talloc_realloc(res_sids_ctx, *res_sids,
 380                         struct dom_sid *, *num_res_sids + 1);
 381                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(*res_sids, tmp_ctx);
 382                 (*res_sids)[*num_res_sids] = dom_sid_dup(*res_sids, &sid);
 383                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE((*res_sids)[*num_res_sids], tmp_ctx);
 384                 ++(*num_res_sids);
 385         }
 386
 387         el = ldb_msg_find_element(res->msgs[0], "memberOf");
 388
 389         for (i = 0; el && i < el->num_values; i++) {
 390                 status = authsam_expand_nested_groups(sam_ctx, &el->values[i],
 391                                                       false, filter, res_sids_ctx, res_sids, num_res_sids);
 392                 if (!NT_STATUS_IS_OK(status)) {
 393                         talloc_free(res);
 394                         talloc_free(tmp_ctx);
 395                         return status;
 396                 }
 397         }
 398
 399         talloc_free(tmp_ctx);
 400
 401         return NT_STATUS_OK;
 402 }
 403
 404 _PUBLIC_ NTSTATUS authsam_make_server_info(TALLOC_CTX *mem_ctx,
 405                                            struct ldb_context *sam_ctx,
 406                                            const char *netbios_name,
 407                                            const char *domain_name,
 408                                            struct ldb_dn *domain_dn,
 409                                            struct ldb_message *msg,
 410                                            DATA_BLOB user_sess_key,
 411                                            DATA_BLOB lm_sess_key,
 412                                            struct auth_serversupplied_info **_server_info)
 413 {
 414         NTSTATUS status;
 415         struct auth_serversupplied_info *server_info;
 416         const char *str, *filter;
 417         /* SIDs for the account and his primary group */
 418         struct dom_sid *account_sid;
 419         struct dom_sid *primary_group_sid;
 420         const char *primary_group_string;
 421         const char *primary_group_dn;
 422         DATA_BLOB primary_group_blob;
 423         /* SID structures for the expanded group memberships */
 424         struct dom_sid **groupSIDs = NULL;
 425         unsigned int num_groupSIDs = 0, i;
 426         struct dom_sid *domain_sid;
 427         TALLOC_CTX *tmp_ctx;
 428         struct ldb_message_element *el;
 429
 430         server_info = talloc(mem_ctx, struct auth_serversupplied_info);
 431         NT_STATUS_HAVE_NO_MEMORY(server_info);
 432
 433         tmp_ctx = talloc_new(server_info);
 434         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info, server_info);
 435
 436         account_sid = samdb_result_dom_sid(server_info, msg, "objectSid");
 437         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(account_sid, server_info);
 438
 439         status = dom_sid_split_rid(tmp_ctx, account_sid, &domain_sid, NULL);
 440         if (!NT_STATUS_IS_OK(status)) {
 441                 talloc_free(server_info);
 442                 return status;
 443         }
 444
 445         primary_group_sid = dom_sid_add_rid(server_info,
 446                                             domain_sid,
 447                                             ldb_msg_find_attr_as_uint(msg, "primaryGroupID", ~0));
 448         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(primary_group_sid, server_info);
 449
 450         /* Filter out builtin groups from this token.  We will search
 451          * for builtin groups later, and not include them in the PAC
 452          * on SamLogon validation info */
 453         filter = talloc_asprintf(tmp_ctx, "(&(objectClass=group)(!(groupType:1.2.840.113556.1.4.803:=%u))(groupType:1.2.840.113556.1.4.803:=%u))", GROUP_TYPE_BUILTIN_LOCAL_GROUP, GROUP_TYPE_SECURITY_ENABLED);
 454         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(filter, server_info);
 455
 456         primary_group_string = dom_sid_string(tmp_ctx, primary_group_sid);
 457         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(primary_group_string, server_info);
 458
 459         primary_group_dn = talloc_asprintf(tmp_ctx, "<SID=%s>", primary_group_string);
 460         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(primary_group_dn, server_info);
 461
 462         primary_group_blob = data_blob_string_const(primary_group_dn);
 463
 464         /* Expands the primary group - this function takes in
 465          * memberOf-like values, so we fake one up with the
 466          * <SID=S-...> format of DN and then let it expand
 467          * them, as long as they meet the filter - so only
 468          * domain groups, not builtin groups
 469          *
 470          * The primary group is still treated specially, so we set the
 471          * 'only childs' flag to true
 472          */
 473         status = authsam_expand_nested_groups(sam_ctx, &primary_group_blob, true, filter,
 474                                               server_info, &groupSIDs, &num_groupSIDs);
 475         if (!NT_STATUS_IS_OK(status)) {
 476                 talloc_free(server_info);
 477                 return status;
 478         }
 479
 480         /* Expands the additional groups */
 481         el = ldb_msg_find_element(msg, "memberOf");
 482         for (i = 0; el && i < el->num_values; i++) {
 483                 /* This function takes in memberOf values and expands
 484                  * them, as long as they meet the filter - so only
 485                  * domain groups, not builtin groups */
 486                 status = authsam_expand_nested_groups(sam_ctx, &el->values[i], false, filter,
 487                                                       server_info, &groupSIDs, &num_groupSIDs);
 488                 if (!NT_STATUS_IS_OK(status)) {
 489                         talloc_free(server_info);
 490                         return status;
 491                 }
 492         }
 493
 494         server_info->account_sid = account_sid;
 495         server_info->primary_group_sid = primary_group_sid;
 496
 497         server_info->domain_groups = groupSIDs;
 498         server_info->n_domain_groups = num_groupSIDs;
 499
 500         server_info->account_name = talloc_steal(server_info,
 501                 ldb_msg_find_attr_as_string(msg, "sAMAccountName", NULL));
 502
 503         server_info->domain_name = talloc_strdup(server_info, domain_name);
 504         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->domain_name,
 505                 server_info);
 506
 507         str = ldb_msg_find_attr_as_string(msg, "displayName", "");
 508         server_info->full_name = talloc_strdup(server_info, str);
 509         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->full_name, server_info);
 510
 511         str = ldb_msg_find_attr_as_string(msg, "scriptPath", "");
 512         server_info->logon_script = talloc_strdup(server_info, str);
 513         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->logon_script,
 514                 server_info);
 515
 516         str = ldb_msg_find_attr_as_string(msg, "profilePath", "");
 517         server_info->profile_path = talloc_strdup(server_info, str);
 518         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->profile_path,
 519                 server_info);
 520
 521         str = ldb_msg_find_attr_as_string(msg, "homeDirectory", "");
 522         server_info->home_directory = talloc_strdup(server_info, str);
 523         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->home_directory,
 524                 server_info);
 525
 526         str = ldb_msg_find_attr_as_string(msg, "homeDrive", "");
 527         server_info->home_drive = talloc_strdup(server_info, str);
 528         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->home_drive, server_info);
 529
 530         server_info->logon_server = talloc_strdup(server_info, netbios_name);
 531         NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->logon_server,
 532                 server_info);
 533
 534         server_info->last_logon = samdb_result_nttime(msg, "lastLogon", 0);
 535         server_info->last_logoff = samdb_result_last_logoff(msg);
 536         server_info->acct_expiry = samdb_result_account_expires(msg);
 537         server_info->last_password_change = samdb_result_nttime(msg,
 538                 "pwdLastSet", 0);
 539         server_info->allow_password_change
 540                 = samdb_result_allow_password_change(sam_ctx, mem_ctx,
 541                         domain_dn, msg, "pwdLastSet");
 542         server_info->force_password_change
 543                 = samdb_result_force_password_change(sam_ctx, mem_ctx,
 544                         domain_dn, msg);
 545         server_info->logon_count = ldb_msg_find_attr_as_uint(msg, "logonCount", 0);
 546         server_info->bad_password_count = ldb_msg_find_attr_as_uint(msg, "badPwdCount",
 547                 0);
 548
 549         server_info->acct_flags = samdb_result_acct_flags(sam_ctx, mem_ctx,
 550                                                           msg, domain_dn);
 551
 552         server_info->user_session_key = data_blob_talloc(server_info,
 553                                                          user_sess_key.data,
 554                                                          user_sess_key.length);
 555         if (user_sess_key.data) {
 556                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->user_session_key.data,
 557                                                   server_info);
 558         }
 559         server_info->lm_session_key = data_blob_talloc(server_info,
 560                                                        lm_sess_key.data,
 561                                                        lm_sess_key.length);
 562         if (lm_sess_key.data) {
 563                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->lm_session_key.data,
 564                                                   server_info);
 565         }
 566
 567         if (server_info->acct_flags & ACB_SVRTRUST) {
 568                 /* the SID_NT_ENTERPRISE_DCS SID gets added into the
 569                    PAC */
 570                 server_info->domain_groups = talloc_realloc(server_info,
 571                                                             server_info->domain_groups,
 572                                                             struct dom_sid *,
 573                                                             server_info->n_domain_groups+1);
 574                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->domain_groups, server_info);
 575                 server_info->domain_groups[server_info->n_domain_groups] =
 576                         dom_sid_parse_talloc(server_info->domain_groups,
 577                                              SID_NT_ENTERPRISE_DCS);
 578                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->domain_groups[server_info->n_domain_groups],
 579                                                   server_info);
 580                 server_info->n_domain_groups++;
 581         }
 582
 583         if ((server_info->acct_flags & (ACB_PARTIAL_SECRETS_ACCOUNT | ACB_WSTRUST)) ==
 584             (ACB_PARTIAL_SECRETS_ACCOUNT | ACB_WSTRUST)) {
 585                 /* the DOMAIN_RID_ENTERPRISE_READONLY_DCS PAC */
 586                 server_info->domain_groups = talloc_realloc(server_info,
 587                                                             server_info->domain_groups,
 588                                                             struct dom_sid *,
 589                                                             server_info->n_domain_groups+1);
 590                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->domain_groups, server_info);
 591                 server_info->domain_groups[server_info->n_domain_groups] =
 592                         dom_sid_add_rid(server_info->domain_groups, domain_sid,
 593                                 DOMAIN_RID_ENTERPRISE_READONLY_DCS);
 594                 NT_STATUS_HAVE_NO_MEMORY_AND_FREE(server_info->domain_groups[server_info->n_domain_groups],
 595                                                   server_info);
 596                 server_info->n_domain_groups++;
 597         }
 598
 599         server_info->authenticated = true;
 600
 601         talloc_free(tmp_ctx);
 602         *_server_info = server_info;
 603
 604         return NT_STATUS_OK;
 605 }
 606
 607 NTSTATUS sam_get_results_principal(struct ldb_context *sam_ctx,
 608                                    TALLOC_CTX *mem_ctx, const char *principal,
 609                                    const char **attrs,
 610                                    struct ldb_dn **domain_dn,
 611                                    struct ldb_message **msg)
 612 {
 613         struct ldb_dn *user_dn;
 614         NTSTATUS nt_status;
 615         TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
 616         int ret;
 617
 618         if (!tmp_ctx) {
 619                 return NT_STATUS_NO_MEMORY;
 620         }
 621
 622         nt_status = crack_user_principal_name(sam_ctx, tmp_ctx, principal,
 623                                               &user_dn, domain_dn);
 624         if (!NT_STATUS_IS_OK(nt_status)) {
 625                 talloc_free(tmp_ctx);
 626                 return nt_status;
 627         }
 628
 629         /* pull the user attributes */
 630         ret = dsdb_search_one(sam_ctx, tmp_ctx, msg, user_dn,
 631                               LDB_SCOPE_BASE, attrs, DSDB_SEARCH_SHOW_EXTENDED_DN, "(objectClass=*)");
 632         if (ret != LDB_SUCCESS) {
 633                 talloc_free(tmp_ctx);
 634                 return NT_STATUS_INTERNAL_DB_CORRUPTION;
 635         }
 636         talloc_steal(mem_ctx, *msg);
 637         talloc_steal(mem_ctx, *domain_dn);
 638         talloc_free(tmp_ctx);
 639
 640         return NT_STATUS_OK;
 641 }