source4/kdc/hdb-ldb.c

   1 /*
   2  * Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
   3  * Copyright (c) 2004, Andrew Bartlett <abartlet@samba.org>.
   4  * Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  *
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * 3. Neither the name of PADL Software  nor the names of its contributors
  19  *    may be used to endorse or promote products derived from this software
  20  *    without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY PADL SOFTWARE AND CONTRIBUTORS ``AS IS'' AND
  23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25  * ARE DISCLAIMED.  IN NO EVENT SHALL PADL SOFTWARE OR CONTRIBUTORS BE LIABLE
  26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #include "includes.h"
  36 #include "system/time.h"
  37 #include "kdc.h"
  38 #include "dsdb/common/flags.h"
  39 #include "hdb.h"
  40 #include "krb5_locl.h"
  41 #include "lib/ldb/include/ldb.h"
  42 #include "lib/ldb/include/ldb_errors.h"
  43 #include "librpc/gen_ndr/netlogon.h"
  44 #include "auth/auth.h"
  45 #include "auth/credentials/credentials.h"
  46 #include "auth/auth_sam.h"
  47 #include "db_wrap.h"
  48 #include "dsdb/samdb/samdb.h"
  49 #include "librpc/ndr/libndr.h"
  50 #include "librpc/gen_ndr/ndr_drsblobs.h"
  51 #include "libcli/auth/libcli_auth.h"
  52
  53 enum hdb_ldb_ent_type
  54 { HDB_LDB_ENT_TYPE_CLIENT, HDB_LDB_ENT_TYPE_SERVER,
  55   HDB_LDB_ENT_TYPE_KRBTGT, HDB_LDB_ENT_TYPE_ANY };
  56
  57 static const char * const krb5_attrs[] = {
  58         "objectClass",
  59         "sAMAccountName",
  60
  61         "userPrincipalName",
  62         "servicePrincipalName",
  63
  64         "userAccountControl",
  65
  66         "pwdLastSet",
  67         "accountExpires",
  68
  69         "whenCreated",
  70         "whenChanged",
  71
  72         "msDS-KeyVersionNumber",
  73
  74         "unicodePwd",
  75         "supplementalCredentials",
  76
  77         NULL
  78 };
  79
  80 static const char *realm_ref_attrs[] = {
  81         "nCName",
  82         "dnsRoot",
  83         NULL
  84 };
  85
  86 static KerberosTime ldb_msg_find_krb5time_ldap_time(struct ldb_message *msg, const char *attr, KerberosTime default_val)
  87 {
  88     const char *tmp;
  89     const char *gentime;
  90     struct tm tm;
  91
  92     gentime = ldb_msg_find_attr_as_string(msg, attr, NULL);
  93     if (!gentime)
  94         return default_val;
  95
  96     tmp = strptime(gentime, "%Y%m%d%H%M%SZ", &tm);
  97     if (tmp == NULL) {
  98             return default_val;
  99     }
 100
 101     return timegm(&tm);
 102 }
 103
 104 static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
 105 {
 106         HDBFlags flags = int2HDBFlags(0);
 107
 108         /* we don't allow kadmin deletes */
 109         flags.immutable = 1;
 110
 111         /* mark the principal as invalid to start with */
 112         flags.invalid = 1;
 113
 114         flags.renewable = 1;
 115
 116         /* All accounts are servers, but this may be disabled again in the caller */
 117         flags.server = 1;
 118
 119         /* Account types - clear the invalid bit if it turns out to be valid */
 120         if (userAccountControl & UF_NORMAL_ACCOUNT) {
 121                 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
 122                         flags.client = 1;
 123                 }
 124                 flags.invalid = 0;
 125         }
 126
 127         if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
 128                 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
 129                         flags.client = 1;
 130                 }
 131                 flags.invalid = 0;
 132         }
 133         if (userAccountControl & UF_WORKSTATION_TRUST_ACCOUNT) {
 134                 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
 135                         flags.client = 1;
 136                 }
 137                 flags.invalid = 0;
 138         }
 139         if (userAccountControl & UF_SERVER_TRUST_ACCOUNT) {
 140                 if (ent_type == HDB_LDB_ENT_TYPE_CLIENT || ent_type == HDB_LDB_ENT_TYPE_ANY) {
 141                         flags.client = 1;
 142                 }
 143                 flags.invalid = 0;
 144         }
 145
 146         /* Not permitted to act as a client if disabled */
 147         if (userAccountControl & UF_ACCOUNTDISABLE) {
 148                 flags.client = 0;
 149         }
 150         if (userAccountControl & UF_LOCKOUT) {
 151                 flags.invalid = 1;
 152         }
 153 /*
 154         if (userAccountControl & UF_PASSWORD_NOTREQD) {
 155                 flags.invalid = 1;
 156         }
 157 */
 158 /*
 159         UF_PASSWORD_CANT_CHANGE and UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED are irrelevent
 160 */
 161         if (userAccountControl & UF_TEMP_DUPLICATE_ACCOUNT) {
 162                 flags.invalid = 1;
 163         }
 164
 165 /* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */
 166
 167 /*
 168         if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
 169                 flags.invalid = 1;
 170         }
 171 */
 172         if (userAccountControl & UF_SMARTCARD_REQUIRED) {
 173                 flags.require_hwauth = 1;
 174         }
 175         if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
 176                 flags.ok_as_delegate = 1;
 177         }
 178         if (!(userAccountControl & UF_NOT_DELEGATED)) {
 179                 flags.forwardable = 1;
 180                 flags.proxiable = 1;
 181         }
 182
 183         if (userAccountControl & UF_DONT_REQUIRE_PREAUTH) {
 184                 flags.require_preauth = 0;
 185         } else {
 186                 flags.require_preauth = 1;
 187
 188         }
 189         return flags;
 190 }
 191
 192 static int hdb_ldb_destrutor(struct hdb_ldb_private *private)
 193 {
 194     hdb_entry_ex *entry_ex = private->entry_ex;
 195     free_hdb_entry(&entry_ex->entry);
 196     return 0;
 197 }
 198
 199 static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
 200 {
 201         talloc_free(entry_ex->ctx);
 202 }
 203
 204 static krb5_error_code LDB_message2entry_keys(krb5_context context,
 205                                               TALLOC_CTX *mem_ctx,
 206                                               struct ldb_message *msg,
 207                                               unsigned int userAccountControl,
 208                                               hdb_entry_ex *entry_ex)
 209 {
 210         krb5_error_code ret = 0;
 211         NTSTATUS status;
 212         struct samr_Password *hash;
 213         const struct ldb_val *sc_val;
 214         struct supplementalCredentialsBlob scb;
 215         struct supplementalCredentialsPackage *scp = NULL;
 216         struct package_PrimaryKerberosBlob _pkb;
 217         struct package_PrimaryKerberosCtr3 *pkb3 = NULL;
 218         uint32_t i;
 219         uint32_t allocated_keys = 0;
 220
 221         entry_ex->entry.keys.val = NULL;
 222         entry_ex->entry.keys.len = 0;
 223
 224         entry_ex->entry.kvno = ldb_msg_find_attr_as_int(msg, "msDS-KeyVersionNumber", 0);
 225
 226         /* Get keys from the db */
 227
 228         hash = samdb_result_hash(mem_ctx, msg, "unicodePwd");
 229         sc_val = ldb_msg_find_ldb_val(msg, "supplementalCredentials");
 230
 231         /* unicodePwd for enctype 0x17 (23) if present */
 232         if (hash) {
 233                 allocated_keys++;
 234         }
 235
 236         /* supplementalCredentials if present */
 237         if (sc_val) {
 238                 status = ndr_pull_struct_blob_all(sc_val, mem_ctx, &scb,
 239                                                   (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
 240                 if (!NT_STATUS_IS_OK(status)) {
 241                         dump_data(0, sc_val->data, sc_val->length);
 242                         ret = EINVAL;
 243                         goto out;
 244                 }
 245
 246                 for (i=0; i < scb.sub.num_packages; i++) {
 247                         if (scb.sub.packages[i].unknown1 != 0x00000001) {
 248                                 continue;
 249                         }
 250
 251                         if (strcmp("Primary:Kerberos", scb.sub.packages[i].name) != 0) {
 252                                 continue;
 253                         }
 254
 255                         if (!scb.sub.packages[i].data || !scb.sub.packages[i].data[0]) {
 256                                 continue;
 257                         }
 258
 259                         scp = &scb.sub.packages[i];
 260                         break;
 261                 }
 262         }
 263         /* Primary:Kerberos element of supplementalCredentials */
 264         if (scp) {
 265                 DATA_BLOB blob;
 266
 267                 blob = strhex_to_data_blob(scp->data);
 268                 if (!blob.data) {
 269                         ret = ENOMEM;
 270                         goto out;
 271                 }
 272                 talloc_steal(mem_ctx, blob.data);
 273
 274                 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
 275                 status = ndr_pull_struct_blob(&blob, mem_ctx, &_pkb,
 276                                               (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
 277                 if (!NT_STATUS_IS_OK(status)) {
 278                         krb5_set_error_string(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
 279                         krb5_warnx(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
 280                         ret = EINVAL;
 281                         goto out;
 282                 }
 283
 284                 if (_pkb.version != 3) {
 285                         krb5_set_error_string(context, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
 286                         krb5_warnx(context, "LDB_message2entry_keys: could not parse PrimaryKerberos not version 3");
 287                         ret = EINVAL;
 288                         goto out;
 289                 }
 290
 291                 pkb3 = &_pkb.ctr.ctr3;
 292
 293                 allocated_keys += pkb3->num_keys;
 294         }
 295
 296         if (allocated_keys == 0) {
 297                 /* oh, no password.  Apparently (comment in
 298                  * hdb-ldap.c) this violates the ASN.1, but this
 299                  * allows an entry with no keys (yet). */
 300                 return 0;
 301         }
 302
 303         /* allocate space to decode into */
 304         entry_ex->entry.keys.len = 0;
 305         entry_ex->entry.keys.val = calloc(allocated_keys, sizeof(Key));
 306         if (entry_ex->entry.keys.val == NULL) {
 307                 ret = ENOMEM;
 308                 goto out;
 309         }
 310
 311         if (hash && !(userAccountControl & UF_USE_DES_KEY_ONLY)) {
 312                 Key key;
 313
 314                 key.mkvno = 0;
 315                 key.salt = NULL; /* No salt for this enc type */
 316
 317                 ret = krb5_keyblock_init(context,
 318                                          ENCTYPE_ARCFOUR_HMAC_MD5,
 319                                          hash->hash, sizeof(hash->hash),
 320                                          &key.key);
 321                 if (ret) {
 322                         goto out;
 323                 }
 324
 325                 entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
 326                 entry_ex->entry.keys.len++;
 327         }
 328
 329         if (pkb3) {
 330                 for (i=0; i < pkb3->num_keys; i++) {
 331                         bool use = true;
 332                         Key key;
 333
 334                         if (!pkb3->keys[i].value) continue;
 335
 336                         if (userAccountControl & UF_USE_DES_KEY_ONLY) {
 337                                 switch (pkb3->keys[i].keytype) {
 338                                 case ENCTYPE_DES_CBC_CRC:
 339                                 case ENCTYPE_DES_CBC_MD5:
 340                                         break;
 341                                 default:
 342                                         use = false;
 343                                         break;
 344                                 }
 345                         }
 346
 347                         if (!use) continue;
 348
 349                         key.mkvno = 0;
 350
 351                         if (pkb3->salt.string) {
 352                                 DATA_BLOB salt;
 353
 354                                 salt = data_blob_string_const(pkb3->salt.string);
 355
 356                                 key.salt = calloc(1, sizeof(*key.salt));
 357                                 if (key.salt == NULL) {
 358                                         ret = ENOMEM;
 359                                         goto out;
 360                                 }
 361
 362                                 key.salt->type = hdb_pw_salt;
 363
 364                                 ret = krb5_data_copy(&key.salt->salt, salt.data, salt.length);
 365                                 if (ret) {
 366                                         free(key.salt);
 367                                         key.salt = NULL;
 368                                         goto out;
 369                                 }
 370                         }
 371
 372                         ret = krb5_keyblock_init(context,
 373                                                  pkb3->keys[i].keytype,
 374                                                  pkb3->keys[i].value->data,
 375                                                  pkb3->keys[i].value->length,
 376                                                  &key.key);
 377                         if (ret) {
 378                                 if (key.salt) {
 379                                         free_Salt(key.salt);
 380                                         free(key.salt);
 381                                         key.salt = NULL;
 382                                 }
 383                                 goto out;
 384                         }
 385
 386                         entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
 387                         entry_ex->entry.keys.len++;
 388                 }
 389         }
 390
 391 out:
 392         if (ret != 0) {
 393                 entry_ex->entry.keys.len = 0;
 394         }
 395         if (entry_ex->entry.keys.len == 0 && entry_ex->entry.keys.val) {
 396                 free(entry_ex->entry.keys.val);
 397                 entry_ex->entry.keys.val = NULL;
 398         }
 399         return ret;
 400 }
 401
 402 /*
 403  * Construct an hdb_entry from a directory entry.
 404  */
 405 static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
 406                                          TALLOC_CTX *mem_ctx, krb5_const_principal principal,
 407                                          enum hdb_ldb_ent_type ent_type,
 408                                          struct ldb_message *msg,
 409                                          struct ldb_message *realm_ref_msg,
 410                                          hdb_entry_ex *entry_ex)
 411 {
 412         unsigned int userAccountControl;
 413         int i;
 414         krb5_error_code ret = 0;
 415         krb5_boolean is_computer = FALSE;
 416         const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
 417         char *realm = strupper_talloc(mem_ctx, dnsdomain);
 418         struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
 419                                                         mem_ctx,
 420                                                         realm_ref_msg,
 421                                                         "nCName",
 422                                                         ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
 423
 424         struct hdb_ldb_private *private;
 425         NTTIME acct_expiry;
 426
 427         struct ldb_message_element *objectclasses;
 428         struct ldb_val computer_val;
 429         computer_val.data = discard_const_p(uint8_t,"computer");
 430         computer_val.length = strlen((const char *)computer_val.data);
 431
 432         objectclasses = ldb_msg_find_element(msg, "objectClass");
 433
 434         if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
 435                 is_computer = TRUE;
 436         }
 437
 438         memset(entry_ex, 0, sizeof(*entry_ex));
 439
 440         if (!realm) {
 441                 krb5_set_error_string(context, "talloc_strdup: out of memory");
 442                 ret = ENOMEM;
 443                 goto out;
 444         }
 445
 446         private = talloc(mem_ctx, struct hdb_ldb_private);
 447         if (!private) {
 448                 ret = ENOMEM;
 449                 goto out;
 450         }
 451
 452         private->entry_ex = entry_ex;
 453
 454         talloc_set_destructor(private, hdb_ldb_destrutor);
 455
 456         entry_ex->ctx = private;
 457         entry_ex->free_entry = hdb_ldb_free_entry;
 458
 459         userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
 460
 461
 462         entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
 463         if (ent_type == HDB_LDB_ENT_TYPE_ANY && principal == NULL) {
 464                 const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
 465                 if (!samAccountName) {
 466                         krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
 467                         ret = ENOENT;
 468                         goto out;
 469                 }
 470                 samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
 471                 krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
 472         } else {
 473                 char *strdup_realm;
 474                 ret = copy_Principal(principal, entry_ex->entry.principal);
 475                 if (ret) {
 476                         krb5_clear_error_string(context);
 477                         goto out;
 478                 }
 479
 480                 /* While we have copied the client principal, tests
 481                  * show that Win2k3 returns the 'corrected' realm, not
 482                  * the client-specified realm.  This code attempts to
 483                  * replace the client principal's realm with the one
 484                  * we determine from our records */
 485
 486                 /* this has to be with malloc() */
 487                 strdup_realm = strdup(realm);
 488                 if (!strdup_realm) {
 489                         ret = ENOMEM;
 490                         krb5_clear_error_string(context);
 491                         goto out;
 492                 }
 493                 free(*krb5_princ_realm(context, entry_ex->entry.principal));
 494                 krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
 495         }
 496
 497         entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
 498
 499         if (ent_type == HDB_LDB_ENT_TYPE_KRBTGT) {
 500                 entry_ex->entry.flags.invalid = 0;
 501                 entry_ex->entry.flags.server = 1;
 502                 entry_ex->entry.flags.forwardable = 1;
 503                 entry_ex->entry.flags.ok_as_delegate = 1;
 504         }
 505
 506         if (lp_parm_bool(-1, "kdc", "require spn for service", True)) {
 507                 if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
 508                         entry_ex->entry.flags.server = 0;
 509                 }
 510         }
 511
 512         /* use 'whenCreated' */
 513         entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
 514         /* use '???' */
 515         entry_ex->entry.created_by.principal = NULL;
 516
 517         entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
 518         if (entry_ex->entry.modified_by == NULL) {
 519                 krb5_set_error_string(context, "malloc: out of memory");
 520                 ret = ENOMEM;
 521                 goto out;
 522         }
 523
 524         /* use 'whenChanged' */
 525         entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
 526         /* use '???' */
 527         entry_ex->entry.modified_by->principal = NULL;
 528
 529         entry_ex->entry.valid_start = NULL;
 530
 531         acct_expiry = samdb_result_nttime(msg, "accountExpires", (NTTIME)-1);
 532         if ((acct_expiry == (NTTIME)-1) ||
 533             (acct_expiry == 0x7FFFFFFFFFFFFFFFULL)) {
 534                 entry_ex->entry.valid_end = NULL;
 535         } else {
 536                 entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
 537                 if (entry_ex->entry.valid_end == NULL) {
 538                         ret = ENOMEM;
 539                         goto out;
 540                 }
 541                 *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
 542         }
 543
 544         if (ent_type != HDB_LDB_ENT_TYPE_KRBTGT) {
 545                 NTTIME must_change_time
 546                         = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
 547                                                              domain_dn, msg);
 548                 if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
 549                         entry_ex->entry.pw_end = NULL;
 550                 } else {
 551                         entry_ex->entry.pw_end = malloc(sizeof(*entry_ex->entry.pw_end));
 552                         if (entry_ex->entry.pw_end == NULL) {
 553                                 ret = ENOMEM;
 554                                 goto out;
 555                         }
 556                         *entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
 557                 }
 558         } else {
 559                 entry_ex->entry.pw_end = NULL;
 560         }
 561
 562         entry_ex->entry.max_life = NULL;
 563
 564         entry_ex->entry.max_renew = NULL;
 565
 566         entry_ex->entry.generation = NULL;
 567
 568         /* Get keys from the db */
 569         ret = LDB_message2entry_keys(context, private, msg, userAccountControl, entry_ex);
 570         if (ret) {
 571                 /* Could be bougus data in the entry, or out of memory */
 572                 goto out;
 573         }
 574
 575         entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
 576         if (entry_ex->entry.etypes == NULL) {
 577                 krb5_clear_error_string(context);
 578                 ret = ENOMEM;
 579                 goto out;
 580         }
 581         entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
 582         entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
 583         if (entry_ex->entry.etypes->val == NULL) {
 584                 krb5_clear_error_string(context);
 585                 ret = ENOMEM;
 586                 goto out;
 587         }
 588         for (i=0; i < entry_ex->entry.etypes->len; i++) {
 589                 entry_ex->entry.etypes->val[i] = entry_ex->entry.keys.val[i].key.keytype;
 590         }
 591
 592
 593         private->msg = talloc_steal(private, msg);
 594         private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
 595         private->samdb = (struct ldb_context *)db->hdb_db;
 596
 597 out:
 598         if (ret != 0) {
 599                 /* This doesn't free ent itself, that is for the eventual caller to do */
 600                 hdb_free_entry(context, entry_ex);
 601         } else {
 602                 talloc_steal(db, entry_ex->ctx);
 603         }
 604
 605         return ret;
 606 }
 607
 608 static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
 609                                             TALLOC_CTX *mem_ctx,
 610                                             krb5_const_principal principal,
 611                                             enum hdb_ldb_ent_type ent_type,
 612                                             struct ldb_dn *realm_dn,
 613                                             struct ldb_message ***pmsg)
 614 {
 615         krb5_error_code ret;
 616         int lret;
 617         char *filter = NULL;
 618         const char * const *princ_attrs = krb5_attrs;
 619
 620         char *short_princ;
 621         char *short_princ_talloc;
 622
 623         struct ldb_result *res = NULL;
 624
 625         ret = krb5_unparse_name_flags(context, principal,  KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
 626
 627         if (ret != 0) {
 628                 krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
 629                 krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
 630                 return ret;
 631         }
 632
 633         short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
 634         free(short_princ);
 635         if (!short_princ_talloc) {
 636                 krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
 637                 return ENOMEM;
 638         }
 639
 640         switch (ent_type) {
 641         case HDB_LDB_ENT_TYPE_CLIENT:
 642                 /* Can't happen */
 643                 return EINVAL;
 644         case HDB_LDB_ENT_TYPE_ANY:
 645                 /* Can't happen */
 646                 return EINVAL;
 647         case HDB_LDB_ENT_TYPE_KRBTGT:
 648                 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 649                                          KRB5_TGS_NAME);
 650                 break;
 651         case HDB_LDB_ENT_TYPE_SERVER:
 652                 filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
 653                                          short_princ_talloc);
 654                 break;
 655         }
 656
 657         if (!filter) {
 658                 krb5_set_error_string(context, "talloc_asprintf: out of memory");
 659                 return ENOMEM;
 660         }
 661
 662         lret = ldb_search(ldb_ctx, realm_dn, LDB_SCOPE_SUBTREE, filter, princ_attrs, &res);
 663
 664         if (lret != LDB_SUCCESS) {
 665                 DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
 666                 return HDB_ERR_NOENTRY;
 667         } else if (res->count == 0 || res->count > 1) {
 668                 DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
 669                 talloc_free(res);
 670                 return HDB_ERR_NOENTRY;
 671         }
 672         talloc_steal(mem_ctx, res->msgs);
 673         *pmsg = res->msgs;
 674         talloc_free(res);
 675         return 0;
 676 }
 677
 678 static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
 679                                         TALLOC_CTX *mem_ctx,
 680                                         const char *realm,
 681                                         struct ldb_message ***pmsg)
 682 {
 683         int ret;
 684         struct ldb_result *cross_ref_res;
 685         struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
 686
 687         ret = ldb_search_exp_fmt(ldb_ctx, mem_ctx, &cross_ref_res,
 688                         partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs,
 689                         "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
 690                         realm, realm);
 691
 692         if (ret != LDB_SUCCESS) {
 693                 DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx)));
 694                 talloc_free(cross_ref_res);
 695                 return HDB_ERR_NOENTRY;
 696         } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
 697                 DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count));
 698                 talloc_free(cross_ref_res);
 699                 return HDB_ERR_NOENTRY;
 700         }
 701
 702         if (pmsg) {
 703                 *pmsg = cross_ref_res->msgs;
 704                 talloc_steal(mem_ctx, cross_ref_res->msgs);
 705         }
 706         talloc_free(cross_ref_res);
 707
 708         return 0;
 709 }
 710
 711
 712 static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
 713 {
 714         if (db->hdb_master_key_set) {
 715                 krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
 716                 krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
 717                 return HDB_ERR_NOENTRY;
 718         }
 719
 720         return 0;
 721 }
 722
 723 static krb5_error_code LDB_close(krb5_context context, HDB *db)
 724 {
 725         return 0;
 726 }
 727
 728 static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
 729 {
 730         return 0;
 731 }
 732
 733 static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
 734 {
 735         return 0;
 736 }
 737
 738 static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
 739 {
 740         return HDB_ERR_DB_INUSE;
 741 }
 742
 743 static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
 744                                         TALLOC_CTX *mem_ctx,
 745                                         krb5_const_principal principal,
 746                                         unsigned flags,
 747                                         hdb_entry_ex *entry_ex) {
 748         NTSTATUS nt_status;
 749         char *principal_string;
 750         krb5_error_code ret;
 751         struct ldb_message **msg = NULL;
 752         struct ldb_message **realm_ref_msg = NULL;
 753
 754         ret = krb5_unparse_name(context, principal, &principal_string);
 755
 756         if (ret != 0) {
 757                 return ret;
 758         }
 759
 760         nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
 761                                               mem_ctx, principal_string,
 762                                               &msg, &realm_ref_msg);
 763         free(principal_string);
 764         if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
 765                 return HDB_ERR_NOENTRY;
 766         } else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
 767                 return ENOMEM;
 768         } else if (!NT_STATUS_IS_OK(nt_status)) {
 769                 return EINVAL;
 770         }
 771
 772         ret = LDB_message2entry(context, db, mem_ctx,
 773                                 principal, HDB_LDB_ENT_TYPE_CLIENT,
 774                                 msg[0], realm_ref_msg[0], entry_ex);
 775         return ret;
 776 }
 777
 778 static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
 779                                         TALLOC_CTX *mem_ctx,
 780                                         krb5_const_principal principal,
 781                                         unsigned flags,
 782                                         hdb_entry_ex *entry_ex)
 783 {
 784         krb5_error_code ret;
 785         struct ldb_message **msg = NULL;
 786         struct ldb_message **realm_ref_msg = NULL;
 787         struct ldb_dn *realm_dn;
 788
 789         krb5_principal alloc_principal = NULL;
 790         if (principal->name.name_string.len != 2
 791             || (strcmp(principal->name.name_string.val[0], KRB5_TGS_NAME) != 0)) {
 792                 /* Not a krbtgt */
 793                 return HDB_ERR_NOENTRY;
 794         }
 795
 796         /* krbtgt case.  Either us or a trusted realm */
 797         if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
 798                               mem_ctx, principal->name.name_string.val[1], &realm_ref_msg) == 0)) {
 799                 /* us */
 800                 /* Cludge, cludge cludge.  If the realm part of krbtgt/realm,
 801                  * is in our db, then direct the caller at our primary
 802                  * krgtgt */
 803
 804                 const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg[0], "dnsRoot", NULL);
 805                 char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
 806                 if (!realm_fixed) {
 807                         krb5_set_error_string(context, "strupper_talloc: out of memory");
 808                         return ENOMEM;
 809                 }
 810
 811                 ret = krb5_copy_principal(context, principal, &alloc_principal);
 812                 if (ret) {
 813                         return ret;
 814                 }
 815
 816                 free(alloc_principal->name.name_string.val[1]);
 817                 alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
 818                 talloc_free(realm_fixed);
 819                 if (!alloc_principal->name.name_string.val[1]) {
 820                         krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
 821                         return ENOMEM;
 822                 }
 823                 principal = alloc_principal;
 824                 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
 825         } else {
 826                 /* we should lookup trusted domains */
 827                 return HDB_ERR_NOENTRY;
 828         }
 829
 830         realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
 831
 832         ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
 833                                    mem_ctx,
 834                                    principal, HDB_LDB_ENT_TYPE_KRBTGT, realm_dn, &msg);
 835
 836         if (ret != 0) {
 837                 krb5_warnx(context, "LDB_fetch: could not find principal in DB");
 838                 krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
 839                 return ret;
 840         }
 841
 842         ret = LDB_message2entry(context, db, mem_ctx,
 843                                 principal, HDB_LDB_ENT_TYPE_KRBTGT,
 844                                 msg[0], realm_ref_msg[0], entry_ex);
 845         if (ret != 0) {
 846                 krb5_warnx(context, "LDB_fetch: message2entry failed");
 847         }
 848         return ret;
 849 }
 850
 851 static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
 852                                         TALLOC_CTX *mem_ctx,
 853                                         krb5_const_principal principal,
 854                                         unsigned flags,
 855                                         hdb_entry_ex *entry_ex)
 856 {
 857         krb5_error_code ret;
 858         const char *realm;
 859         struct ldb_message **msg = NULL;
 860         struct ldb_message **realm_ref_msg = NULL;
 861         struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
 862         if (principal->name.name_string.len >= 2) {
 863                 /* 'normal server' case */
 864                 int ldb_ret;
 865                 NTSTATUS nt_status;
 866                 struct ldb_dn *user_dn, *domain_dn;
 867                 char *principal_string;
 868
 869                 ret = krb5_unparse_name_flags(context, principal,
 870                                               KRB5_PRINCIPAL_UNPARSE_NO_REALM,
 871                                               &principal_string);
 872                 if (ret != 0) {
 873                         return ret;
 874                 }
 875
 876                 /* At this point we may find the host is known to be
 877                  * in a different realm, so we should generate a
 878                  * referral instead */
 879                 nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
 880                                                          mem_ctx, principal_string,
 881                                                          &user_dn, &domain_dn);
 882                 free(principal_string);
 883
 884                 if (!NT_STATUS_IS_OK(nt_status)) {
 885                         return HDB_ERR_NOENTRY;
 886                 }
 887
 888                 ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
 889                                           mem_ctx, user_dn, &msg, krb5_attrs);
 890
 891                 if (ldb_ret != 1) {
 892                         return HDB_ERR_NOENTRY;
 893                 }
 894
 895                 ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
 896                                        mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
 897                                        "ncName=%s", ldb_dn_get_linearized(domain_dn));
 898
 899                 if (ldb_ret != 1) {
 900                         return HDB_ERR_NOENTRY;
 901                 }
 902
 903         } else {
 904                 struct ldb_dn *realm_dn;
 905                 /* server as client principal case, but we must not lookup userPrincipalNames */
 906
 907                 realm = krb5_principal_get_realm(context, principal);
 908
 909                 ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
 910                                        mem_ctx, realm, &realm_ref_msg);
 911                 if (ret != 0) {
 912                         return HDB_ERR_NOENTRY;
 913                 }
 914
 915                 realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
 916
 917                 ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
 918                                            mem_ctx,
 919                                            principal, HDB_LDB_ENT_TYPE_SERVER, realm_dn, &msg);
 920
 921                 if (ret != 0) {
 922                         return ret;
 923                 }
 924         }
 925
 926         ret = LDB_message2entry(context, db, mem_ctx,
 927                                 principal, HDB_LDB_ENT_TYPE_SERVER,
 928                                 msg[0], realm_ref_msg[0], entry_ex);
 929         if (ret != 0) {
 930                 krb5_warnx(context, "LDB_fetch: message2entry failed");
 931         }
 932
 933         return ret;
 934 }
 935
 936 static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
 937                                  krb5_const_principal principal,
 938                                  unsigned flags,
 939                                  hdb_entry_ex *entry_ex)
 940 {
 941         krb5_error_code ret = HDB_ERR_NOENTRY;
 942
 943         TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
 944
 945         if (!mem_ctx) {
 946                 krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
 947                 return ENOMEM;
 948         }
 949
 950         if (flags & HDB_F_GET_CLIENT) {
 951                 ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
 952                 if (ret != HDB_ERR_NOENTRY) goto done;
 953         }
 954         if (flags & HDB_F_GET_SERVER) {
 955                 ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
 956                 if (ret != HDB_ERR_NOENTRY) goto done;
 957                 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
 958                 if (ret != HDB_ERR_NOENTRY) goto done;
 959         }
 960         if (flags & HDB_F_GET_KRBTGT) {
 961                 ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
 962                 if (ret != HDB_ERR_NOENTRY) goto done;
 963         }
 964
 965 done:
 966         talloc_free(mem_ctx);
 967         return ret;
 968 }
 969
 970 static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
 971 {
 972         return HDB_ERR_DB_INUSE;
 973 }
 974
 975 static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
 976 {
 977         return HDB_ERR_DB_INUSE;
 978 }
 979
 980 struct hdb_ldb_seq {
 981         struct ldb_context *ctx;
 982         int index;
 983         int count;
 984         struct ldb_message **msgs;
 985         struct ldb_message **realm_ref_msgs;
 986 };
 987
 988 static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
 989 {
 990         krb5_error_code ret;
 991         struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
 992         TALLOC_CTX *mem_ctx;
 993         hdb_entry_ex entry_ex;
 994         memset(&entry_ex, '\0', sizeof(entry_ex));
 995
 996         if (!priv) {
 997                 return HDB_ERR_NOENTRY;
 998         }
 999
1000         mem_ctx = talloc_named(priv, 0, "LDB_seq context");
1001
1002         if (!mem_ctx) {
1003                 krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
1004                 return ENOMEM;
1005         }
1006
1007         if (priv->index < priv->count) {
1008                 ret = LDB_message2entry(context, db, mem_ctx,
1009                                         NULL, HDB_LDB_ENT_TYPE_ANY,
1010                                         priv->msgs[priv->index++],
1011                                         priv->realm_ref_msgs[0], entry);
1012         } else {
1013                 ret = HDB_ERR_NOENTRY;
1014         }
1015
1016         if (ret != 0) {
1017                 talloc_free(priv);
1018                 db->hdb_dbc = NULL;
1019         } else {
1020                 talloc_free(mem_ctx);
1021         }
1022
1023         return ret;
1024 }
1025
1026 static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
1027                                         hdb_entry_ex *entry)
1028 {
1029         struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
1030         struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
1031         char *realm;
1032         struct ldb_dn *realm_dn = NULL;
1033         struct ldb_result *res = NULL;
1034         struct ldb_message **realm_ref_msgs = NULL;
1035         krb5_error_code ret;
1036         TALLOC_CTX *mem_ctx;
1037         int lret;
1038
1039         if (priv) {
1040                 talloc_free(priv);
1041                 db->hdb_dbc = NULL;
1042         }
1043
1044         priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
1045         if (!priv) {
1046                 krb5_set_error_string(context, "talloc: out of memory");
1047                 return ENOMEM;
1048         }
1049
1050         priv->ctx = ldb_ctx;
1051         priv->index = 0;
1052         priv->msgs = NULL;
1053         priv->realm_ref_msgs = NULL;
1054         priv->count = 0;
1055
1056         mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
1057
1058         if (!mem_ctx) {
1059                 krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
1060                 return ENOMEM;
1061         }
1062
1063         ret = krb5_get_default_realm(context, &realm);
1064         if (ret != 0) {
1065                 talloc_free(priv);
1066                 return ret;
1067         }
1068
1069         ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
1070                                mem_ctx, realm, &realm_ref_msgs);
1071
1072         free(realm);
1073
1074         if (ret != 0) {
1075                 talloc_free(priv);
1076                 krb5_warnx(context, "LDB_firstkey: could not find realm\n");
1077                 return HDB_ERR_NOENTRY;
1078         }
1079
1080         realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
1081
1082         priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
1083
1084         lret = ldb_search(ldb_ctx, realm_dn,
1085                                  LDB_SCOPE_SUBTREE, "(objectClass=user)",
1086                                  krb5_attrs, &res);
1087
1088         if (lret != LDB_SUCCESS) {
1089                 talloc_free(priv);
1090                 return HDB_ERR_NOENTRY;
1091         }
1092
1093         priv->count = res->count;
1094         priv->msgs = talloc_steal(priv, res->msgs);
1095         talloc_free(res);
1096
1097         db->hdb_dbc = priv;
1098
1099         ret = LDB_seq(context, db, flags, entry);
1100
1101         if (ret != 0) {
1102                 talloc_free(priv);
1103                 db->hdb_dbc = NULL;
1104         } else {
1105                 talloc_free(mem_ctx);
1106         }
1107         return ret;
1108 }
1109
1110 static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
1111                                    hdb_entry_ex *entry)
1112 {
1113         return LDB_seq(context, db, flags, entry);
1114 }
1115
1116 static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
1117 {
1118         talloc_free(db);
1119         return 0;
1120 }
1121
1122 /* This interface is to be called by the KDC, which is expecting Samba
1123  * calling conventions.  It is also called by a wrapper
1124  * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
1125  * code */
1126
1127 NTSTATUS kdc_hdb_ldb_create(TALLOC_CTX *mem_ctx,
1128                             krb5_context context, struct HDB **db, const char *arg)
1129 {
1130         NTSTATUS nt_status;
1131         struct auth_session_info *session_info;
1132         *db = talloc(mem_ctx, HDB);
1133         if (!*db) {
1134                 krb5_set_error_string(context, "malloc: out of memory");
1135                 return NT_STATUS_NO_MEMORY;
1136         }
1137
1138         (*db)->hdb_master_key_set = 0;
1139         (*db)->hdb_db = NULL;
1140
1141         nt_status = auth_system_session_info(*db, &session_info);
1142         if (!NT_STATUS_IS_OK(nt_status)) {
1143                 return nt_status;
1144         }
1145
1146         /* The idea here is very simple.  Using Kerberos to
1147          * authenticate the KDC to the LDAP server is higly likely to
1148          * be circular.
1149          *
1150          * In future we may set this up to use EXERNAL and SSL
1151          * certificates, for now it will almost certainly be NTLMSSP
1152         */
1153
1154         cli_credentials_set_kerberos_state(session_info->credentials,
1155                                            CRED_DONT_USE_KERBEROS);
1156
1157         /* Setup the link to LDB */
1158         (*db)->hdb_db = samdb_connect(*db, session_info);
1159         if ((*db)->hdb_db == NULL) {
1160                 DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
1161                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
1162         }
1163
1164         (*db)->hdb_dbc = NULL;
1165         (*db)->hdb_open = LDB_open;
1166         (*db)->hdb_close = LDB_close;
1167         (*db)->hdb_fetch = LDB_fetch;
1168         (*db)->hdb_store = LDB_store;
1169         (*db)->hdb_remove = LDB_remove;
1170         (*db)->hdb_firstkey = LDB_firstkey;
1171         (*db)->hdb_nextkey = LDB_nextkey;
1172         (*db)->hdb_lock = LDB_lock;
1173         (*db)->hdb_unlock = LDB_unlock;
1174         (*db)->hdb_rename = LDB_rename;
1175         /* we don't implement these, as we are not a lockable database */
1176         (*db)->hdb__get = NULL;
1177         (*db)->hdb__put = NULL;
1178         /* kadmin should not be used for deletes - use other tools instead */
1179         (*db)->hdb__del = NULL;
1180         (*db)->hdb_destroy = LDB_destroy;
1181
1182         return NT_STATUS_OK;
1183 }
1184
1185 krb5_error_code hdb_ldb_create(krb5_context context, struct HDB **db, const char *arg)
1186 {
1187         NTSTATUS nt_status;
1188         /* The global kdc_mem_ctx, Disgusting, ugly hack, but it means one less private hook */
1189         nt_status = kdc_hdb_ldb_create(kdc_mem_ctx, context, db, arg);
1190
1191         if (NT_STATUS_IS_OK(nt_status)) {
1192                 return 0;
1193         }
1194         return EINVAL;
1195 }