source4/dsdb/samdb/ldb_modules/password_hash.c

   1 /*
   2    ldb database module
   3
   4    Copyright (C) Simo Sorce  2004-2006
   5    Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2006
   6    Copyright (C) Andrew Tridgell 2004
   7    Copyright (C) Stefan Metzmacher 2007
   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 /*
  24  *  Name: ldb
  25  *
  26  *  Component: ldb password_hash module
  27  *
  28  *  Description: correctly update hash values based on changes to userPassword and friends
  29  *
  30  *  Author: Andrew Bartlett
  31  *  Author: Stefan Metzmacher
  32  */
  33
  34 #include "includes.h"
  35 #include "libcli/ldap/ldap_ndr.h"
  36 #include "ldb/include/ldb_errors.h"
  37 #include "ldb/include/ldb.h"
  38 #include "ldb/include/ldb_private.h"
  39 #include "librpc/gen_ndr/misc.h"
  40 #include "librpc/gen_ndr/samr.h"
  41 #include "libcli/auth/libcli_auth.h"
  42 #include "libcli/security/security.h"
  43 #include "system/kerberos.h"
  44 #include "auth/kerberos/kerberos.h"
  45 #include "system/time.h"
  46 #include "dsdb/samdb/samdb.h"
  47 #include "dsdb/common/flags.h"
  48 #include "dsdb/samdb/ldb_modules/password_modules.h"
  49 #include "librpc/ndr/libndr.h"
  50 #include "librpc/gen_ndr/ndr_drsblobs.h"
  51 #include "lib/crypto/crypto.h"
  52 #include "param/param.h"
  53
  54 /* If we have decided there is reason to work on this request, then
  55  * setup all the password hash types correctly.
  56  *
  57  * If the administrator doesn't want the userPassword stored (set in the
  58  * domain and per-account policies) then we must strip that out before
  59  * we do the first operation.
  60  *
  61  * Once this is done (which could update anything at all), we
  62  * calculate the password hashes.
  63  *
  64  * This function must not only update the unicodePwd, dBCSPwd and
  65  * supplementalCredentials fields, it must also atomicly increment the
  66  * msDS-KeyVersionNumber.  We should be in a transaction, so all this
  67  * should be quite safe...
  68  *
  69  * Finally, if the administrator has requested that a password history
  70  * be maintained, then this should also be written out.
  71  *
  72  */
  73
  74 struct ph_context {
  75
  76         enum ph_type {PH_ADD, PH_MOD} type;
  77         enum ph_step {PH_ADD_SEARCH_DOM, PH_ADD_DO_ADD, PH_MOD_DO_REQ, PH_MOD_SEARCH_SELF, PH_MOD_SEARCH_DOM, PH_MOD_DO_MOD} step;
  78
  79         struct ldb_module *module;
  80         struct ldb_request *orig_req;
  81
  82         struct ldb_request *dom_req;
  83         struct ldb_reply *dom_res;
  84
  85         struct ldb_request *down_req;
  86
  87         struct ldb_request *search_req;
  88         struct ldb_reply *search_res;
  89
  90         struct ldb_request *mod_req;
  91
  92         struct dom_sid *domain_sid;
  93 };
  94
  95 struct domain_data {
  96         bool store_cleartext;
  97         uint_t pwdProperties;
  98         uint_t pwdHistoryLength;
  99         char *netbios_domain;
 100         char *dns_domain;
 101         char *realm;
 102 };
 103
 104 struct setup_password_fields_io {
 105         struct ph_context *ac;
 106         struct domain_data *domain;
 107         struct smb_krb5_context *smb_krb5_context;
 108
 109         /* infos about the user account */
 110         struct {
 111                 uint32_t user_account_control;
 112                 const char *sAMAccountName;
 113                 const char *user_principal_name;
 114                 bool is_computer;
 115         } u;
 116
 117         /* new credentials */
 118         struct {
 119                 const char *cleartext;
 120                 struct samr_Password *nt_hash;
 121                 struct samr_Password *lm_hash;
 122         } n;
 123
 124         /* old credentials */
 125         struct {
 126                 uint32_t nt_history_len;
 127                 struct samr_Password *nt_history;
 128                 uint32_t lm_history_len;
 129                 struct samr_Password *lm_history;
 130                 const struct ldb_val *supplemental;
 131                 struct supplementalCredentialsBlob scb;
 132                 uint32_t kvno;
 133         } o;
 134
 135         /* generated credentials */
 136         struct {
 137                 struct samr_Password *nt_hash;
 138                 struct samr_Password *lm_hash;
 139                 uint32_t nt_history_len;
 140                 struct samr_Password *nt_history;
 141                 uint32_t lm_history_len;
 142                 struct samr_Password *lm_history;
 143                 const char *salt;
 144                 DATA_BLOB aes_256;
 145                 DATA_BLOB aes_128;
 146                 DATA_BLOB des_md5;
 147                 DATA_BLOB des_crc;
 148                 struct ldb_val supplemental;
 149                 NTTIME last_set;
 150                 uint32_t kvno;
 151         } g;
 152 };
 153
 154 static int setup_nt_fields(struct setup_password_fields_io *io)
 155 {
 156         uint32_t i;
 157
 158         io->g.nt_hash = io->n.nt_hash;
 159
 160         if (io->domain->pwdHistoryLength == 0) {
 161                 return LDB_SUCCESS;
 162         }
 163
 164         /* We might not have an old NT password */
 165         io->g.nt_history = talloc_array(io->ac,
 166                                         struct samr_Password,
 167                                         io->domain->pwdHistoryLength);
 168         if (!io->g.nt_history) {
 169                 ldb_oom(io->ac->module->ldb);
 170                 return LDB_ERR_OPERATIONS_ERROR;
 171         }
 172
 173         for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.nt_history_len); i++) {
 174                 io->g.nt_history[i+1] = io->o.nt_history[i];
 175         }
 176         io->g.nt_history_len = i + 1;
 177
 178         if (io->g.nt_hash) {
 179                 io->g.nt_history[0] = *io->g.nt_hash;
 180         } else {
 181                 /*
 182                  * TODO: is this correct?
 183                  * the simular behavior is correct for the lm history case
 184                  */
 185                 E_md4hash("", io->g.nt_history[0].hash);
 186         }
 187
 188         return LDB_SUCCESS;
 189 }
 190
 191 static int setup_lm_fields(struct setup_password_fields_io *io)
 192 {
 193         uint32_t i;
 194
 195         io->g.lm_hash = io->n.lm_hash;
 196
 197         if (io->domain->pwdHistoryLength == 0) {
 198                 return LDB_SUCCESS;
 199         }
 200
 201         /* We might not have an old NT password */
 202         io->g.lm_history = talloc_array(io->ac,
 203                                         struct samr_Password,
 204                                         io->domain->pwdHistoryLength);
 205         if (!io->g.lm_history) {
 206                 ldb_oom(io->ac->module->ldb);
 207                 return LDB_ERR_OPERATIONS_ERROR;
 208         }
 209
 210         for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.lm_history_len); i++) {
 211                 io->g.lm_history[i+1] = io->o.lm_history[i];
 212         }
 213         io->g.lm_history_len = i + 1;
 214
 215         if (io->g.lm_hash) {
 216                 io->g.lm_history[0] = *io->g.lm_hash;
 217         } else {
 218                 E_deshash("", io->g.lm_history[0].hash);
 219         }
 220
 221         return LDB_SUCCESS;
 222 }
 223
 224 static int setup_kerberos_keys(struct setup_password_fields_io *io)
 225 {
 226         krb5_error_code krb5_ret;
 227         Principal *salt_principal;
 228         krb5_salt salt;
 229         krb5_keyblock key;
 230
 231         /* Many, many thanks to lukeh@padl.com for this
 232          * algorithm, described in his Nov 10 2004 mail to
 233          * samba-technical@samba.org */
 234
 235         /*
 236          * Determine a salting principal
 237          */
 238         if (io->u.is_computer) {
 239                 char *name;
 240                 char *saltbody;
 241
 242                 name = talloc_strdup(io->ac, io->u.sAMAccountName);
 243                 if (!name) {
 244                         ldb_oom(io->ac->module->ldb);
 245                         return LDB_ERR_OPERATIONS_ERROR;
 246                 }
 247
 248                 if (name[strlen(name)-1] == '$') {
 249                         name[strlen(name)-1] = '\0';
 250                 }
 251
 252                 saltbody = talloc_asprintf(io->ac, "%s.%s", name, io->domain->dns_domain);
 253                 if (!saltbody) {
 254                         ldb_oom(io->ac->module->ldb);
 255                         return LDB_ERR_OPERATIONS_ERROR;
 256                 }
 257
 258                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 259                                                &salt_principal,
 260                                                io->domain->realm, "host",
 261                                                saltbody, NULL);
 262         } else if (io->u.user_principal_name) {
 263                 char *user_principal_name;
 264                 char *p;
 265
 266                 user_principal_name = talloc_strdup(io->ac, io->u.user_principal_name);
 267                 if (!user_principal_name) {
 268                         ldb_oom(io->ac->module->ldb);
 269                         return LDB_ERR_OPERATIONS_ERROR;
 270                 }
 271
 272                 p = strchr(user_principal_name, '@');
 273                 if (p) {
 274                         p[0] = '\0';
 275                 }
 276
 277                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 278                                                &salt_principal,
 279                                                io->domain->realm, user_principal_name,
 280                                                NULL);
 281         } else {
 282                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 283                                                &salt_principal,
 284                                                io->domain->realm, io->u.sAMAccountName,
 285                                                NULL);
 286         }
 287         if (krb5_ret) {
 288                 ldb_asprintf_errstring(io->ac->module->ldb,
 289                                        "setup_kerberos_keys: "
 290                                        "generation of a salting principal failed: %s",
 291                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 292                 return LDB_ERR_OPERATIONS_ERROR;
 293         }
 294
 295         /*
 296          * create salt from salt_principal
 297          */
 298         krb5_ret = krb5_get_pw_salt(io->smb_krb5_context->krb5_context,
 299                                     salt_principal, &salt);
 300         krb5_free_principal(io->smb_krb5_context->krb5_context, salt_principal);
 301         if (krb5_ret) {
 302                 ldb_asprintf_errstring(io->ac->module->ldb,
 303                                        "setup_kerberos_keys: "
 304                                        "generation of krb5_salt failed: %s",
 305                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 306                 return LDB_ERR_OPERATIONS_ERROR;
 307         }
 308         /* create a talloc copy */
 309         io->g.salt = talloc_strndup(io->ac,
 310                                     salt.saltvalue.data,
 311                                     salt.saltvalue.length);
 312         krb5_free_salt(io->smb_krb5_context->krb5_context, salt);
 313         if (!io->g.salt) {
 314                 ldb_oom(io->ac->module->ldb);
 315                 return LDB_ERR_OPERATIONS_ERROR;
 316         }
 317         salt.saltvalue.data     = discard_const(io->g.salt);
 318         salt.saltvalue.length   = strlen(io->g.salt);
 319
 320         /*
 321          * create ENCTYPE_AES256_CTS_HMAC_SHA1_96 key out of
 322          * the salt and the cleartext password
 323          */
 324         krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
 325                                            ENCTYPE_AES256_CTS_HMAC_SHA1_96,
 326                                            io->n.cleartext,
 327                                            salt,
 328                                            &key);
 329         if (krb5_ret) {
 330                 ldb_asprintf_errstring(io->ac->module->ldb,
 331                                        "setup_kerberos_keys: "
 332                                        "generation of a aes256-cts-hmac-sha1-96 key failed: %s",
 333                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 334                 return LDB_ERR_OPERATIONS_ERROR;
 335         }
 336         io->g.aes_256 = data_blob_talloc(io->ac,
 337                                          key.keyvalue.data,
 338                                          key.keyvalue.length);
 339         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 340         if (!io->g.aes_256.data) {
 341                 ldb_oom(io->ac->module->ldb);
 342                 return LDB_ERR_OPERATIONS_ERROR;
 343         }
 344
 345         /*
 346          * create ENCTYPE_AES128_CTS_HMAC_SHA1_96 key out of
 347          * the salt and the cleartext password
 348          */
 349         krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
 350                                            ENCTYPE_AES128_CTS_HMAC_SHA1_96,
 351                                            io->n.cleartext,
 352                                            salt,
 353                                            &key);
 354         if (krb5_ret) {
 355                 ldb_asprintf_errstring(io->ac->module->ldb,
 356                                        "setup_kerberos_keys: "
 357                                        "generation of a aes128-cts-hmac-sha1-96 key failed: %s",
 358                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 359                 return LDB_ERR_OPERATIONS_ERROR;
 360         }
 361         io->g.aes_128 = data_blob_talloc(io->ac,
 362                                          key.keyvalue.data,
 363                                          key.keyvalue.length);
 364         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 365         if (!io->g.aes_128.data) {
 366                 ldb_oom(io->ac->module->ldb);
 367                 return LDB_ERR_OPERATIONS_ERROR;
 368         }
 369
 370         /*
 371          * create ENCTYPE_DES_CBC_MD5 key out of
 372          * the salt and the cleartext password
 373          */
 374         krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
 375                                            ENCTYPE_DES_CBC_MD5,
 376                                            io->n.cleartext,
 377                                            salt,
 378                                            &key);
 379         if (krb5_ret) {
 380                 ldb_asprintf_errstring(io->ac->module->ldb,
 381                                        "setup_kerberos_keys: "
 382                                        "generation of a des-cbc-md5 key failed: %s",
 383                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 384                 return LDB_ERR_OPERATIONS_ERROR;
 385         }
 386         io->g.des_md5 = data_blob_talloc(io->ac,
 387                                          key.keyvalue.data,
 388                                          key.keyvalue.length);
 389         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 390         if (!io->g.des_md5.data) {
 391                 ldb_oom(io->ac->module->ldb);
 392                 return LDB_ERR_OPERATIONS_ERROR;
 393         }
 394
 395         /*
 396          * create ENCTYPE_DES_CBC_CRC key out of
 397          * the salt and the cleartext password
 398          */
 399         krb5_ret = krb5_string_to_key_salt(io->smb_krb5_context->krb5_context,
 400                                            ENCTYPE_DES_CBC_CRC,
 401                                            io->n.cleartext,
 402                                            salt,
 403                                            &key);
 404         if (krb5_ret) {
 405                 ldb_asprintf_errstring(io->ac->module->ldb,
 406                                        "setup_kerberos_keys: "
 407                                        "generation of a des-cbc-crc key failed: %s",
 408                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 409                 return LDB_ERR_OPERATIONS_ERROR;
 410         }
 411         io->g.des_crc = data_blob_talloc(io->ac,
 412                                          key.keyvalue.data,
 413                                          key.keyvalue.length);
 414         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 415         if (!io->g.des_crc.data) {
 416                 ldb_oom(io->ac->module->ldb);
 417                 return LDB_ERR_OPERATIONS_ERROR;
 418         }
 419
 420         return LDB_SUCCESS;
 421 }
 422
 423 static int setup_primary_kerberos(struct setup_password_fields_io *io,
 424                                   const struct supplementalCredentialsBlob *old_scb,
 425                                   struct package_PrimaryKerberosBlob *pkb)
 426 {
 427         struct package_PrimaryKerberosCtr3 *pkb3 = &pkb->ctr.ctr3;
 428         struct supplementalCredentialsPackage *old_scp = NULL;
 429         struct package_PrimaryKerberosBlob _old_pkb;
 430         struct package_PrimaryKerberosCtr3 *old_pkb3 = NULL;
 431         uint32_t i;
 432         enum ndr_err_code ndr_err;
 433
 434         /*
 435          * prepare generation of keys
 436          *
 437          * ENCTYPE_DES_CBC_MD5
 438          * ENCTYPE_DES_CBC_CRC
 439          */
 440         pkb3->salt.string       = io->g.salt;
 441         pkb3->num_keys          = 2;
 442         pkb3->keys              = talloc_array(io->ac,
 443                                                struct package_PrimaryKerberosKey,
 444                                                pkb3->num_keys);
 445         if (!pkb3->keys) {
 446                 ldb_oom(io->ac->module->ldb);
 447                 return LDB_ERR_OPERATIONS_ERROR;
 448         }
 449
 450         pkb3->keys[0].keytype   = ENCTYPE_DES_CBC_MD5;
 451         pkb3->keys[0].value     = &io->g.des_md5;
 452         pkb3->keys[1].keytype   = ENCTYPE_DES_CBC_CRC;
 453         pkb3->keys[1].value     = &io->g.des_crc;
 454
 455         /* initialize the old keys to zero */
 456         pkb3->num_old_keys      = 0;
 457         pkb3->old_keys          = NULL;
 458
 459         /* if there're no old keys, then we're done */
 460         if (!old_scb) {
 461                 return LDB_SUCCESS;
 462         }
 463
 464         for (i=0; i < old_scb->sub.num_packages; i++) {
 465                 if (strcmp("Primary:Kerberos", old_scb->sub.packages[i].name) != 0) {
 466                         continue;
 467                 }
 468
 469                 if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
 470                         continue;
 471                 }
 472
 473                 old_scp = &old_scb->sub.packages[i];
 474                 break;
 475         }
 476         /* Primary:Kerberos element of supplementalCredentials */
 477         if (old_scp) {
 478                 DATA_BLOB blob;
 479
 480                 blob = strhex_to_data_blob(old_scp->data);
 481                 if (!blob.data) {
 482                         ldb_oom(io->ac->module->ldb);
 483                         return LDB_ERR_OPERATIONS_ERROR;
 484                 }
 485                 talloc_steal(io->ac, blob.data);
 486
 487                 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
 488                 ndr_err = ndr_pull_struct_blob(&blob, io->ac, lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")), &_old_pkb,
 489                                                (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
 490                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 491                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 492                         ldb_asprintf_errstring(io->ac->module->ldb,
 493                                                "setup_primary_kerberos: "
 494                                                "failed to pull old package_PrimaryKerberosBlob: %s",
 495                                                nt_errstr(status));
 496                         return LDB_ERR_OPERATIONS_ERROR;
 497                 }
 498
 499                 if (_old_pkb.version != 3) {
 500                         ldb_asprintf_errstring(io->ac->module->ldb,
 501                                                "setup_primary_kerberos: "
 502                                                "package_PrimaryKerberosBlob version[%u] expected[3]",
 503                                                _old_pkb.version);
 504                         return LDB_ERR_OPERATIONS_ERROR;
 505                 }
 506
 507                 old_pkb3 = &_old_pkb.ctr.ctr3;
 508         }
 509
 510         /* if we didn't found the old keys we're done */
 511         if (!old_pkb3) {
 512                 return LDB_SUCCESS;
 513         }
 514
 515         /* fill in the old keys */
 516         pkb3->num_old_keys      = old_pkb3->num_keys;
 517         pkb3->old_keys          = old_pkb3->keys;
 518
 519         return LDB_SUCCESS;
 520 }
 521
 522 static int setup_primary_kerberos_newer(struct setup_password_fields_io *io,
 523                                         const struct supplementalCredentialsBlob *old_scb,
 524                                         struct package_PrimaryKerberosNewerBlob *pkb)
 525 {
 526         struct package_PrimaryKerberosNewerCtr4 *pkb4 = &pkb->ctr.ctr4;
 527         struct supplementalCredentialsPackage *old_scp = NULL;
 528         struct package_PrimaryKerberosNewerBlob _old_pkb;
 529         struct package_PrimaryKerberosNewerCtr4 *old_pkb4 = NULL;
 530         uint32_t i;
 531         enum ndr_err_code ndr_err;
 532
 533         /*
 534          * prepare generation of keys
 535          *
 536          * ENCTYPE_AES256_CTS_HMAC_SHA1_96
 537          * ENCTYPE_AES128_CTS_HMAC_SHA1_96
 538          * ENCTYPE_DES_CBC_MD5
 539          * ENCTYPE_DES_CBC_CRC
 540          */
 541         pkb4->salt.string       = io->g.salt;
 542         pkb4->num_keys          = 4;
 543         pkb4->keys              = talloc_array(io->ac,
 544                                                struct package_PrimaryKerberosNewerKey,
 545                                                pkb4->num_keys);
 546         if (!pkb4->keys) {
 547                 ldb_oom(io->ac->module->ldb);
 548                 return LDB_ERR_OPERATIONS_ERROR;
 549         }
 550
 551         pkb4->keys[0].keytype   = ENCTYPE_AES256_CTS_HMAC_SHA1_96;
 552         pkb4->keys[0].value     = &io->g.aes_256;
 553         pkb4->keys[1].keytype   = ENCTYPE_AES128_CTS_HMAC_SHA1_96;
 554         pkb4->keys[1].value     = &io->g.aes_128;
 555         pkb4->keys[2].keytype   = ENCTYPE_DES_CBC_MD5;
 556         pkb4->keys[2].value     = &io->g.des_md5;
 557         pkb4->keys[3].keytype   = ENCTYPE_DES_CBC_CRC;
 558         pkb4->keys[3].value     = &io->g.des_crc;
 559
 560         /* initialize the old keys to zero */
 561         pkb4->num_old_keys1     = 0;
 562         pkb4->old_keys1         = NULL;
 563         pkb4->num_old_keys2     = 0;
 564         pkb4->old_keys2         = NULL;
 565
 566         /* if there're no old keys, then we're done */
 567         if (!old_scb) {
 568                 return LDB_SUCCESS;
 569         }
 570
 571         for (i=0; i < old_scb->sub.num_packages; i++) {
 572                 if (strcmp("Primary:Kerberos-Newer-Keys", old_scb->sub.packages[i].name) != 0) {
 573                         continue;
 574                 }
 575
 576                 if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
 577                         continue;
 578                 }
 579
 580                 old_scp = &old_scb->sub.packages[i];
 581                 break;
 582         }
 583         /* Primary:Kerberos element of supplementalCredentials */
 584         if (old_scp) {
 585                 DATA_BLOB blob;
 586
 587                 blob = strhex_to_data_blob(old_scp->data);
 588                 if (!blob.data) {
 589                         ldb_oom(io->ac->module->ldb);
 590                         return LDB_ERR_OPERATIONS_ERROR;
 591                 }
 592                 talloc_steal(io->ac, blob.data);
 593
 594                 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
 595                 ndr_err = ndr_pull_struct_blob(&blob, io->ac,
 596                                                lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
 597                                                &_old_pkb,
 598                                                (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosNewerBlob);
 599                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 600                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 601                         ldb_asprintf_errstring(io->ac->module->ldb,
 602                                                "setup_primary_kerberos_newer: "
 603                                                "failed to pull old package_PrimaryKerberosNewerBlob: %s",
 604                                                nt_errstr(status));
 605                         return LDB_ERR_OPERATIONS_ERROR;
 606                 }
 607
 608                 if (_old_pkb.version != 4) {
 609                         ldb_asprintf_errstring(io->ac->module->ldb,
 610                                                "setup_primary_kerberos: "
 611                                                "package_PrimaryKerberosNewerBlob version[%u] expected[4]",
 612                                                _old_pkb.version);
 613                         return LDB_ERR_OPERATIONS_ERROR;
 614                 }
 615
 616                 old_pkb4 = &_old_pkb.ctr.ctr4;
 617         }
 618
 619         /* if we didn't found the old keys we're done */
 620         if (!old_pkb4) {
 621                 return LDB_SUCCESS;
 622         }
 623
 624         /* fill in the old keys */
 625         pkb4->num_old_keys1     = old_pkb4->num_keys;
 626         pkb4->old_keys1         = old_pkb4->keys;
 627         pkb4->num_old_keys2     = old_pkb4->num_old_keys1;
 628         pkb4->old_keys2         = old_pkb4->old_keys1;
 629
 630         return LDB_SUCCESS;
 631 }
 632
 633 static int setup_primary_wdigest(struct setup_password_fields_io *io,
 634                                  const struct supplementalCredentialsBlob *old_scb,
 635                                  struct package_PrimaryWDigestBlob *pdb)
 636 {
 637         DATA_BLOB sAMAccountName;
 638         DATA_BLOB sAMAccountName_l;
 639         DATA_BLOB sAMAccountName_u;
 640         const char *user_principal_name = io->u.user_principal_name;
 641         DATA_BLOB userPrincipalName;
 642         DATA_BLOB userPrincipalName_l;
 643         DATA_BLOB userPrincipalName_u;
 644         DATA_BLOB netbios_domain;
 645         DATA_BLOB netbios_domain_l;
 646         DATA_BLOB netbios_domain_u;
 647         DATA_BLOB dns_domain;
 648         DATA_BLOB dns_domain_l;
 649         DATA_BLOB dns_domain_u;
 650         DATA_BLOB cleartext;
 651         DATA_BLOB digest;
 652         DATA_BLOB delim;
 653         DATA_BLOB backslash;
 654         uint8_t i;
 655         struct {
 656                 DATA_BLOB *user;
 657                 DATA_BLOB *realm;
 658                 DATA_BLOB *nt4dom;
 659         } wdigest[] = {
 660         /*
 661          * See
 662          * http://technet2.microsoft.com/WindowsServer/en/library/717b450c-f4a0-4cc9-86f4-cc0633aae5f91033.mspx?mfr=true
 663          * for what precalculated hashes are supposed to be stored...
 664          *
 665          * I can't reproduce all values which should contain "Digest" as realm,
 666          * am I doing something wrong or is w2k3 just broken...?
 667          *
 668          * W2K3 fills in following for a user:
 669          *
 670          * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
 671          * sAMAccountName: NewUser2Sam
 672          * userPrincipalName: NewUser2Princ@sub1.w2k3.vmnet1.vm.base
 673          *
 674          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 675          * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
 676          * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
 677          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 678          * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
 679          * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
 680          * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
 681          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 682          * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 683          * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 684          * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 685          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 686          * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 687          * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 688          * 221c55284451ae9b3aacaa2a3c86f10f => NewUser2Princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 689          * 74e1be668853d4324d38c07e2acfb8ea => (w2k3 has a bug here!) newuser2princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 690          * e1e244ab7f098e3ae1761be7f9229bbb => NEWUSER2PRINC@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
 691          * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
 692          * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
 693          * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
 694          * 31dc704d3640335b2123d4ee28aa1f11 => ??? changes with NewUser2Sam => NewUser1Sam
 695          * 36349f5cecd07320fb3bb0e119230c43 => ??? changes with NewUser2Sam => NewUser1Sam
 696          * 12adf019d037fb535c01fd0608e78d9d => ??? changes with NewUser2Sam => NewUser1Sam
 697          * 6feecf8e724906f3ee1105819c5105a1 => ??? changes with NewUser2Princ => NewUser1Princ
 698          * 6c6911f3de6333422640221b9c51ff1f => ??? changes with NewUser2Princ => NewUser1Princ
 699          * 4b279877e742895f9348ac67a8de2f69 => ??? changes with NewUser2Princ => NewUser1Princ
 700          * db0c6bff069513e3ebb9870d29b57490 => ??? changes with NewUser2Sam => NewUser1Sam
 701          * 45072621e56b1c113a4e04a8ff68cd0e => ??? changes with NewUser2Sam => NewUser1Sam
 702          * 11d1220abc44a9c10cf91ef4a9c1de02 => ??? changes with NewUser2Sam => NewUser1Sam
 703          *
 704          * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
 705          * sAMAccountName: NewUser2Sam
 706          *
 707          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 708          * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
 709          * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
 710          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 711          * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
 712          * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
 713          * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
 714          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 715          * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 716          * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 717          * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 718          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 719          * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 720          * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 721          * 8a140d30b6f0a5912735dc1e3bc993b4 => NewUser2Sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 722          * 86d95b2faae6cae4ec261e7fbaccf093 => (here w2k3 is correct) newuser2sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 723          * dfeff1493110220efcdfc6362e5f5450 => NEWUSER2SAM@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
 724          * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
 725          * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
 726          * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
 727          * 31dc704d3640335b2123d4ee28aa1f11 => ???M1   changes with NewUser2Sam => NewUser1Sam
 728          * 36349f5cecd07320fb3bb0e119230c43 => ???M1.L changes with newuser2sam => newuser1sam
 729          * 12adf019d037fb535c01fd0608e78d9d => ???M1.U changes with NEWUSER2SAM => NEWUSER1SAM
 730          * 569b4533f2d9e580211dd040e5e360a8 => ???M2   changes with NewUser2Princ => NewUser1Princ
 731          * 52528bddf310a587c5d7e6a9ae2cbb20 => ???M2.L changes with newuser2princ => newuser1princ
 732          * 4f629a4f0361289ca4255ab0f658fcd5 => ???M3 changes with NewUser2Princ => NewUser1Princ (doesn't depend on case of userPrincipal )
 733          * db0c6bff069513e3ebb9870d29b57490 => ???M4 changes with NewUser2Sam => NewUser1Sam
 734          * 45072621e56b1c113a4e04a8ff68cd0e => ???M5 changes with NewUser2Sam => NewUser1Sam (doesn't depend on case of sAMAccountName)
 735          * 11d1220abc44a9c10cf91ef4a9c1de02 => ???M4.U changes with NEWUSER2SAM => NEWUSER1SAM
 736          */
 737
 738         /*
 739          * sAMAccountName, netbios_domain
 740          */
 741                 {
 742                 .user   = &sAMAccountName,
 743                 .realm  = &netbios_domain,
 744                 },
 745                 {
 746                 .user   = &sAMAccountName_l,
 747                 .realm  = &netbios_domain_l,
 748                 },
 749                 {
 750                 .user   = &sAMAccountName_u,
 751                 .realm  = &netbios_domain_u,
 752                 },
 753                 {
 754                 .user   = &sAMAccountName,
 755                 .realm  = &netbios_domain_u,
 756                 },
 757                 {
 758                 .user   = &sAMAccountName,
 759                 .realm  = &netbios_domain_l,
 760                 },
 761                 {
 762                 .user   = &sAMAccountName_u,
 763                 .realm  = &netbios_domain_l,
 764                 },
 765                 {
 766                 .user   = &sAMAccountName_l,
 767                 .realm  = &netbios_domain_u,
 768                 },
 769         /*
 770          * sAMAccountName, dns_domain
 771          */
 772                 {
 773                 .user   = &sAMAccountName,
 774                 .realm  = &dns_domain,
 775                 },
 776                 {
 777                 .user   = &sAMAccountName_l,
 778                 .realm  = &dns_domain_l,
 779                 },
 780                 {
 781                 .user   = &sAMAccountName_u,
 782                 .realm  = &dns_domain_u,
 783                 },
 784                 {
 785                 .user   = &sAMAccountName,
 786                 .realm  = &dns_domain_u,
 787                 },
 788                 {
 789                 .user   = &sAMAccountName,
 790                 .realm  = &dns_domain_l,
 791                 },
 792                 {
 793                 .user   = &sAMAccountName_u,
 794                 .realm  = &dns_domain_l,
 795                 },
 796                 {
 797                 .user   = &sAMAccountName_l,
 798                 .realm  = &dns_domain_u,
 799                 },
 800         /*
 801          * userPrincipalName, no realm
 802          */
 803                 {
 804                 .user   = &userPrincipalName,
 805                 },
 806                 {
 807                 /*
 808                  * NOTE: w2k3 messes this up, if the user has a real userPrincipalName,
 809                  *       the fallback to the sAMAccountName based userPrincipalName is correct
 810                  */
 811                 .user   = &userPrincipalName_l,
 812                 },
 813                 {
 814                 .user   = &userPrincipalName_u,
 815                 },
 816         /*
 817          * nt4dom\sAMAccountName, no realm
 818          */
 819                 {
 820                 .user   = &sAMAccountName,
 821                 .nt4dom = &netbios_domain
 822                 },
 823                 {
 824                 .user   = &sAMAccountName_l,
 825                 .nt4dom = &netbios_domain_l
 826                 },
 827                 {
 828                 .user   = &sAMAccountName_u,
 829                 .nt4dom = &netbios_domain_u
 830                 },
 831
 832         /*
 833          * the following ones are guessed depending on the technet2 article
 834          * but not reproducable on a w2k3 server
 835          */
 836         /* sAMAccountName with "Digest" realm */
 837                 {
 838                 .user   = &sAMAccountName,
 839                 .realm  = &digest
 840                 },
 841                 {
 842                 .user   = &sAMAccountName_l,
 843                 .realm  = &digest
 844                 },
 845                 {
 846                 .user   = &sAMAccountName_u,
 847                 .realm  = &digest
 848                 },
 849         /* userPrincipalName with "Digest" realm */
 850                 {
 851                 .user   = &userPrincipalName,
 852                 .realm  = &digest
 853                 },
 854                 {
 855                 .user   = &userPrincipalName_l,
 856                 .realm  = &digest
 857                 },
 858                 {
 859                 .user   = &userPrincipalName_u,
 860                 .realm  = &digest
 861                 },
 862         /* nt4dom\\sAMAccountName with "Digest" realm */
 863                 {
 864                 .user   = &sAMAccountName,
 865                 .nt4dom = &netbios_domain,
 866                 .realm  = &digest
 867                 },
 868                 {
 869                 .user   = &sAMAccountName_l,
 870                 .nt4dom = &netbios_domain_l,
 871                 .realm  = &digest
 872                 },
 873                 {
 874                 .user   = &sAMAccountName_u,
 875                 .nt4dom = &netbios_domain_u,
 876                 .realm  = &digest
 877                 },
 878         };
 879
 880         /* prepare DATA_BLOB's used in the combinations array */
 881         sAMAccountName          = data_blob_string_const(io->u.sAMAccountName);
 882         sAMAccountName_l        = data_blob_string_const(strlower_talloc(io->ac, io->u.sAMAccountName));
 883         if (!sAMAccountName_l.data) {
 884                 ldb_oom(io->ac->module->ldb);
 885                 return LDB_ERR_OPERATIONS_ERROR;
 886         }
 887         sAMAccountName_u        = data_blob_string_const(strupper_talloc(io->ac, io->u.sAMAccountName));
 888         if (!sAMAccountName_u.data) {
 889                 ldb_oom(io->ac->module->ldb);
 890                 return LDB_ERR_OPERATIONS_ERROR;
 891         }
 892
 893         /* if the user doesn't have a userPrincipalName, create one (with lower case realm) */
 894         if (!user_principal_name) {
 895                 user_principal_name = talloc_asprintf(io->ac, "%s@%s",
 896                                                       io->u.sAMAccountName,
 897                                                       io->domain->dns_domain);
 898                 if (!user_principal_name) {
 899                         ldb_oom(io->ac->module->ldb);
 900                         return LDB_ERR_OPERATIONS_ERROR;
 901                 }
 902         }
 903         userPrincipalName       = data_blob_string_const(user_principal_name);
 904         userPrincipalName_l     = data_blob_string_const(strlower_talloc(io->ac, user_principal_name));
 905         if (!userPrincipalName_l.data) {
 906                 ldb_oom(io->ac->module->ldb);
 907                 return LDB_ERR_OPERATIONS_ERROR;
 908         }
 909         userPrincipalName_u     = data_blob_string_const(strupper_talloc(io->ac, user_principal_name));
 910         if (!userPrincipalName_u.data) {
 911                 ldb_oom(io->ac->module->ldb);
 912                 return LDB_ERR_OPERATIONS_ERROR;
 913         }
 914
 915         netbios_domain          = data_blob_string_const(io->domain->netbios_domain);
 916         netbios_domain_l        = data_blob_string_const(strlower_talloc(io->ac, io->domain->netbios_domain));
 917         if (!netbios_domain_l.data) {
 918                 ldb_oom(io->ac->module->ldb);
 919                 return LDB_ERR_OPERATIONS_ERROR;
 920         }
 921         netbios_domain_u        = data_blob_string_const(strupper_talloc(io->ac, io->domain->netbios_domain));
 922         if (!netbios_domain_u.data) {
 923                 ldb_oom(io->ac->module->ldb);
 924                 return LDB_ERR_OPERATIONS_ERROR;
 925         }
 926
 927         dns_domain              = data_blob_string_const(io->domain->dns_domain);
 928         dns_domain_l            = data_blob_string_const(io->domain->dns_domain);
 929         dns_domain_u            = data_blob_string_const(io->domain->realm);
 930
 931         cleartext               = data_blob_string_const(io->n.cleartext);
 932
 933         digest                  = data_blob_string_const("Digest");
 934
 935         delim                   = data_blob_string_const(":");
 936         backslash               = data_blob_string_const("\\");
 937
 938         pdb->num_hashes = ARRAY_SIZE(wdigest);
 939         pdb->hashes     = talloc_array(io->ac, struct package_PrimaryWDigestHash, pdb->num_hashes);
 940         if (!pdb->hashes) {
 941                 ldb_oom(io->ac->module->ldb);
 942                 return LDB_ERR_OPERATIONS_ERROR;
 943         }
 944
 945         for (i=0; i < ARRAY_SIZE(wdigest); i++) {
 946                 struct MD5Context md5;
 947                 MD5Init(&md5);
 948                 if (wdigest[i].nt4dom) {
 949                         MD5Update(&md5, wdigest[i].nt4dom->data, wdigest[i].nt4dom->length);
 950                         MD5Update(&md5, backslash.data, backslash.length);
 951                 }
 952                 MD5Update(&md5, wdigest[i].user->data, wdigest[i].user->length);
 953                 MD5Update(&md5, delim.data, delim.length);
 954                 if (wdigest[i].realm) {
 955                         MD5Update(&md5, wdigest[i].realm->data, wdigest[i].realm->length);
 956                 }
 957                 MD5Update(&md5, delim.data, delim.length);
 958                 MD5Update(&md5, cleartext.data, cleartext.length);
 959                 MD5Final(pdb->hashes[i].hash, &md5);
 960         }
 961
 962         return LDB_SUCCESS;
 963 }
 964
 965 static int setup_supplemental_field(struct setup_password_fields_io *io)
 966 {
 967         struct supplementalCredentialsBlob scb;
 968         struct supplementalCredentialsBlob _old_scb;
 969         struct supplementalCredentialsBlob *old_scb = NULL;
 970         /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest and CLEARTEXT) */
 971         uint32_t num_names = 0;
 972         const char *names[1+4];
 973         uint32_t num_packages = 0;
 974         struct supplementalCredentialsPackage packages[1+4];
 975         /* Packages */
 976         struct supplementalCredentialsPackage *pp = NULL;
 977         struct package_PackagesBlob pb;
 978         DATA_BLOB pb_blob;
 979         char *pb_hexstr;
 980         /* Primary:Kerberos-Newer-Keys */
 981         const char **nkn = NULL;
 982         struct supplementalCredentialsPackage *pkn = NULL;
 983         struct package_PrimaryKerberosNewerBlob pknb;
 984         DATA_BLOB pknb_blob;
 985         char *pknb_hexstr;
 986         /* Primary:Kerberos */
 987         const char **nk = NULL;
 988         struct supplementalCredentialsPackage *pk = NULL;
 989         struct package_PrimaryKerberosBlob pkb;
 990         DATA_BLOB pkb_blob;
 991         char *pkb_hexstr;
 992         /* Primary:WDigest */
 993         const char **nd = NULL;
 994         struct supplementalCredentialsPackage *pd = NULL;
 995         struct package_PrimaryWDigestBlob pdb;
 996         DATA_BLOB pdb_blob;
 997         char *pdb_hexstr;
 998         /* Primary:CLEARTEXT */
 999         const char **nc = NULL;
1000         struct supplementalCredentialsPackage *pc = NULL;
1001         struct package_PrimaryCLEARTEXTBlob pcb;
1002         DATA_BLOB pcb_blob;
1003         char *pcb_hexstr;
1004         int ret;
1005         enum ndr_err_code ndr_err;
1006         uint8_t zero16[16];
1007         bool do_newer_keys = false;
1008         bool do_cleartext = false;
1009
1010         ZERO_STRUCT(zero16);
1011         ZERO_STRUCT(names);
1012
1013         if (!io->n.cleartext) {
1014                 /*
1015                  * when we don't have a cleartext password
1016                  * we can't setup a supplementalCredential value
1017                  */
1018                 return LDB_SUCCESS;
1019         }
1020
1021         /* if there's an old supplementaCredentials blob then parse it */
1022         if (io->o.supplemental) {
1023                 ndr_err = ndr_pull_struct_blob_all(io->o.supplemental, io->ac,
1024                                                    lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1025                                                    &_old_scb,
1026                                                    (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
1027                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1028                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1029                         ldb_asprintf_errstring(io->ac->module->ldb,
1030                                                "setup_supplemental_field: "
1031                                                "failed to pull old supplementalCredentialsBlob: %s",
1032                                                nt_errstr(status));
1033                         return LDB_ERR_OPERATIONS_ERROR;
1034                 }
1035
1036                 if (_old_scb.sub.signature == SUPPLEMENTAL_CREDENTIALS_SIGNATURE) {
1037                         old_scb = &_old_scb;
1038                 } else {
1039                         ldb_debug(io->ac->module->ldb, LDB_DEBUG_ERROR,
1040                                                "setup_supplemental_field: "
1041                                                "supplementalCredentialsBlob signature[0x%04X] expected[0x%04X]",
1042                                                _old_scb.sub.signature, SUPPLEMENTAL_CREDENTIALS_SIGNATURE);
1043                 }
1044         }
1045
1046         /* TODO: do the correct check for this, it maybe depends on the functional level? */
1047         do_newer_keys = lp_parm_bool(ldb_get_opaque(io->ac->module->ldb, "loadparm"),
1048                                      NULL, "password_hash", "create_aes_key", false);
1049
1050         if (io->domain->store_cleartext &&
1051             (io->u.user_account_control & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED)) {
1052                 do_cleartext = true;
1053         }
1054
1055         /*
1056          * The ordering is this
1057          *
1058          * Primary:Kerberos-Newer-Keys (optional)
1059          * Primary:Kerberos
1060          * Primary:WDigest
1061          * Primary:CLEARTEXT (optional)
1062          *
1063          * And the 'Packages' package is insert before the last
1064          * other package.
1065          */
1066         if (do_newer_keys) {
1067                 /* Primary:Kerberos-Newer-Keys */
1068                 nkn = &names[num_names++];
1069                 pkn = &packages[num_packages++];
1070         }
1071
1072         /* Primary:Kerberos */
1073         nk = &names[num_names++];
1074         pk = &packages[num_packages++];
1075
1076         if (!do_cleartext) {
1077                 /* Packages */
1078                 pp = &packages[num_packages++];
1079         }
1080
1081         /* Primary:WDigest */
1082         nd = &names[num_names++];
1083         pd = &packages[num_packages++];
1084
1085         if (do_cleartext) {
1086                 /* Packages */
1087                 pp = &packages[num_packages++];
1088
1089                 /* Primary:CLEARTEXT */
1090                 nc = &names[num_names++];
1091                 pc = &packages[num_packages++];
1092         }
1093
1094         if (pkn) {
1095                 /*
1096                  * setup 'Primary:Kerberos-Newer-Keys' element
1097                  */
1098                 *nkn = "Kerberos-Newer-Keys";
1099
1100                 ret = setup_primary_kerberos_newer(io, old_scb, &pknb);
1101                 if (ret != LDB_SUCCESS) {
1102                         return ret;
1103                 }
1104
1105                 ndr_err = ndr_push_struct_blob(&pknb_blob, io->ac,
1106                                                lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1107                                                &pknb,
1108                                                (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosNewerBlob);
1109                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1110                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1111                         ldb_asprintf_errstring(io->ac->module->ldb,
1112                                                "setup_supplemental_field: "
1113                                                "failed to push package_PrimaryKerberosNeverBlob: %s",
1114                                                nt_errstr(status));
1115                         return LDB_ERR_OPERATIONS_ERROR;
1116                 }
1117                 pknb_hexstr = data_blob_hex_string(io->ac, &pknb_blob);
1118                 if (!pknb_hexstr) {
1119                         ldb_oom(io->ac->module->ldb);
1120                         return LDB_ERR_OPERATIONS_ERROR;
1121                 }
1122                 pkn->name       = "Primary:Kerberos-Newer-Keys";
1123                 pkn->reserved   = 1;
1124                 pkn->data       = pknb_hexstr;
1125         }
1126
1127         /*
1128          * setup 'Primary:Kerberos' element
1129          */
1130         *nk = "Kerberos";
1131
1132         ret = setup_primary_kerberos(io, old_scb, &pkb);
1133         if (ret != LDB_SUCCESS) {
1134                 return ret;
1135         }
1136
1137         ndr_err = ndr_push_struct_blob(&pkb_blob, io->ac,
1138                                        lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1139                                        &pkb,
1140                                        (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
1141         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1142                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1143                 ldb_asprintf_errstring(io->ac->module->ldb,
1144                                        "setup_supplemental_field: "
1145                                        "failed to push package_PrimaryKerberosBlob: %s",
1146                                        nt_errstr(status));
1147                 return LDB_ERR_OPERATIONS_ERROR;
1148         }
1149         pkb_hexstr = data_blob_hex_string(io->ac, &pkb_blob);
1150         if (!pkb_hexstr) {
1151                 ldb_oom(io->ac->module->ldb);
1152                 return LDB_ERR_OPERATIONS_ERROR;
1153         }
1154         pk->name        = "Primary:Kerberos";
1155         pk->reserved    = 1;
1156         pk->data        = pkb_hexstr;
1157
1158         /*
1159          * setup 'Primary:WDigest' element
1160          */
1161         *nd = "WDigest";
1162
1163         ret = setup_primary_wdigest(io, old_scb, &pdb);
1164         if (ret != LDB_SUCCESS) {
1165                 return ret;
1166         }
1167
1168         ndr_err = ndr_push_struct_blob(&pdb_blob, io->ac,
1169                                        lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1170                                        &pdb,
1171                                        (ndr_push_flags_fn_t)ndr_push_package_PrimaryWDigestBlob);
1172         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1173                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1174                 ldb_asprintf_errstring(io->ac->module->ldb,
1175                                        "setup_supplemental_field: "
1176                                        "failed to push package_PrimaryWDigestBlob: %s",
1177                                        nt_errstr(status));
1178                 return LDB_ERR_OPERATIONS_ERROR;
1179         }
1180         pdb_hexstr = data_blob_hex_string(io->ac, &pdb_blob);
1181         if (!pdb_hexstr) {
1182                 ldb_oom(io->ac->module->ldb);
1183                 return LDB_ERR_OPERATIONS_ERROR;
1184         }
1185         pd->name        = "Primary:WDigest";
1186         pd->reserved    = 1;
1187         pd->data        = pdb_hexstr;
1188
1189         /*
1190          * setup 'Primary:CLEARTEXT' element
1191          */
1192         if (pc) {
1193                 *nc             = "CLEARTEXT";
1194
1195                 pcb.cleartext   = io->n.cleartext;
1196
1197                 ndr_err = ndr_push_struct_blob(&pcb_blob, io->ac,
1198                                                lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1199                                                &pcb,
1200                                                (ndr_push_flags_fn_t)ndr_push_package_PrimaryCLEARTEXTBlob);
1201                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1202                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1203                         ldb_asprintf_errstring(io->ac->module->ldb,
1204                                                "setup_supplemental_field: "
1205                                                "failed to push package_PrimaryCLEARTEXTBlob: %s",
1206                                                nt_errstr(status));
1207                         return LDB_ERR_OPERATIONS_ERROR;
1208                 }
1209                 pcb_hexstr = data_blob_hex_string(io->ac, &pcb_blob);
1210                 if (!pcb_hexstr) {
1211                         ldb_oom(io->ac->module->ldb);
1212                         return LDB_ERR_OPERATIONS_ERROR;
1213                 }
1214                 pc->name        = "Primary:CLEARTEXT";
1215                 pc->reserved    = 1;
1216                 pc->data        = pcb_hexstr;
1217         }
1218
1219         /*
1220          * setup 'Packages' element
1221          */
1222         pb.names = names;
1223         ndr_err = ndr_push_struct_blob(&pb_blob, io->ac,
1224                                        lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1225                                        &pb,
1226                                        (ndr_push_flags_fn_t)ndr_push_package_PackagesBlob);
1227         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1228                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1229                 ldb_asprintf_errstring(io->ac->module->ldb,
1230                                        "setup_supplemental_field: "
1231                                        "failed to push package_PackagesBlob: %s",
1232                                        nt_errstr(status));
1233                 return LDB_ERR_OPERATIONS_ERROR;
1234         }
1235         pb_hexstr = data_blob_hex_string(io->ac, &pb_blob);
1236         if (!pb_hexstr) {
1237                 ldb_oom(io->ac->module->ldb);
1238                 return LDB_ERR_OPERATIONS_ERROR;
1239         }
1240         pp->name        = "Packages";
1241         pp->reserved    = 2;
1242         pp->data        = pb_hexstr;
1243
1244         /*
1245          * setup 'supplementalCredentials' value
1246          */
1247         ZERO_STRUCT(scb);
1248         scb.sub.num_packages    = num_packages;
1249         scb.sub.packages        = packages;
1250
1251         ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
1252                                        lp_iconv_convenience(ldb_get_opaque(io->ac->module->ldb, "loadparm")),
1253                                        &scb,
1254                                        (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
1255         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1256                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1257                 ldb_asprintf_errstring(io->ac->module->ldb,
1258                                        "setup_supplemental_field: "
1259                                        "failed to push supplementalCredentialsBlob: %s",
1260                                        nt_errstr(status));
1261                 return LDB_ERR_OPERATIONS_ERROR;
1262         }
1263
1264         return LDB_SUCCESS;
1265 }
1266
1267 static int setup_last_set_field(struct setup_password_fields_io *io)
1268 {
1269         /* set it as now */
1270         unix_to_nt_time(&io->g.last_set, time(NULL));
1271
1272         return LDB_SUCCESS;
1273 }
1274
1275 static int setup_kvno_field(struct setup_password_fields_io *io)
1276 {
1277         /* increment by one */
1278         io->g.kvno = io->o.kvno + 1;
1279
1280         return LDB_SUCCESS;
1281 }
1282
1283 static int setup_password_fields(struct setup_password_fields_io *io)
1284 {
1285         bool ok;
1286         int ret;
1287
1288         /*
1289          * refuse the change if someone want to change the cleartext
1290          * and supply his own hashes at the same time...
1291          */
1292         if (io->n.cleartext && (io->n.nt_hash || io->n.lm_hash)) {
1293                 ldb_asprintf_errstring(io->ac->module->ldb,
1294                                        "setup_password_fields: "
1295                                        "it's only allowed to set the cleartext password or the password hashes");
1296                 return LDB_ERR_UNWILLING_TO_PERFORM;
1297         }
1298
1299         if (io->n.cleartext) {
1300                 struct samr_Password *hash;
1301
1302                 hash = talloc(io->ac, struct samr_Password);
1303                 if (!hash) {
1304                         ldb_oom(io->ac->module->ldb);
1305                         return LDB_ERR_OPERATIONS_ERROR;
1306                 }
1307
1308                 /* compute the new nt hash */
1309                 ok = E_md4hash(io->n.cleartext, hash->hash);
1310                 if (ok) {
1311                         io->n.nt_hash = hash;
1312                 } else {
1313                         ldb_asprintf_errstring(io->ac->module->ldb,
1314                                                "setup_password_fields: "
1315                                                "failed to generate nthash from cleartext password");
1316                         return LDB_ERR_OPERATIONS_ERROR;
1317                 }
1318         }
1319
1320         if (io->n.cleartext) {
1321                 struct samr_Password *hash;
1322
1323                 hash = talloc(io->ac, struct samr_Password);
1324                 if (!hash) {
1325                         ldb_oom(io->ac->module->ldb);
1326                         return LDB_ERR_OPERATIONS_ERROR;
1327                 }
1328
1329                 /* compute the new lm hash */
1330                 ok = E_deshash(io->n.cleartext, hash->hash);
1331                 if (ok) {
1332                         io->n.lm_hash = hash;
1333                 } else {
1334                         talloc_free(hash->hash);
1335                 }
1336         }
1337
1338         if (io->n.cleartext) {
1339                 ret = setup_kerberos_keys(io);
1340                 if (ret != 0) {
1341                         return ret;
1342                 }
1343         }
1344
1345         ret = setup_nt_fields(io);
1346         if (ret != 0) {
1347                 return ret;
1348         }
1349
1350         ret = setup_lm_fields(io);
1351         if (ret != 0) {
1352                 return ret;
1353         }
1354
1355         ret = setup_supplemental_field(io);
1356         if (ret != 0) {
1357                 return ret;
1358         }
1359
1360         ret = setup_last_set_field(io);
1361         if (ret != 0) {
1362                 return ret;
1363         }
1364
1365         ret = setup_kvno_field(io);
1366         if (ret != 0) {
1367                 return ret;
1368         }
1369
1370         return LDB_SUCCESS;
1371 }
1372
1373 static struct ldb_handle *ph_init_handle(struct ldb_request *req, struct ldb_module *module, enum ph_type type)
1374 {
1375         struct ph_context *ac;
1376         struct ldb_handle *h;
1377
1378         h = talloc_zero(req, struct ldb_handle);
1379         if (h == NULL) {
1380                 ldb_set_errstring(module->ldb, "Out of Memory");
1381                 return NULL;
1382         }
1383
1384         h->module = module;
1385
1386         ac = talloc_zero(h, struct ph_context);
1387         if (ac == NULL) {
1388                 ldb_set_errstring(module->ldb, "Out of Memory");
1389                 talloc_free(h);
1390                 return NULL;
1391         }
1392
1393         h->private_data = (void *)ac;
1394
1395         h->state = LDB_ASYNC_INIT;
1396         h->status = LDB_SUCCESS;
1397
1398         ac->type = type;
1399         ac->module = module;
1400         ac->orig_req = req;
1401
1402         return h;
1403 }
1404
1405 static int get_domain_data_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
1406 {
1407         struct ph_context *ac;
1408
1409         ac = talloc_get_type(context, struct ph_context);
1410
1411         /* we are interested only in the single reply (base search) we receive here */
1412         if (ares->type == LDB_REPLY_ENTRY) {
1413                 if (ac->dom_res != NULL) {
1414                         ldb_set_errstring(ldb, "Too many results");
1415                         talloc_free(ares);
1416                         return LDB_ERR_OPERATIONS_ERROR;
1417                 }
1418                 ac->dom_res = talloc_steal(ac, ares);
1419         } else {
1420                 talloc_free(ares);
1421         }
1422
1423         return LDB_SUCCESS;
1424 }
1425
1426 static int build_domain_data_request(struct ph_context *ac)
1427 {
1428         /* attrs[] is returned from this function in
1429            ac->dom_req->op.search.attrs, so it must be static, as
1430            otherwise the compiler can put it on the stack */
1431         static const char * const attrs[] = { "pwdProperties", "pwdHistoryLength", NULL };
1432         char *filter;
1433
1434         ac->dom_req = talloc_zero(ac, struct ldb_request);
1435         if (ac->dom_req == NULL) {
1436                 ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
1437                 return LDB_ERR_OPERATIONS_ERROR;
1438         }
1439         ac->dom_req->operation = LDB_SEARCH;
1440         ac->dom_req->op.search.base = ldb_get_default_basedn(ac->module->ldb);
1441         ac->dom_req->op.search.scope = LDB_SCOPE_SUBTREE;
1442
1443         filter = talloc_asprintf(ac->dom_req,
1444                                  "(&(objectSid=%s)(|(|(objectClass=domain)(objectClass=builtinDomain))(objectClass=samba4LocalDomain)))",
1445                                  ldap_encode_ndr_dom_sid(ac->dom_req, ac->domain_sid));
1446         if (filter == NULL) {
1447                 ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
1448                 talloc_free(ac->dom_req);
1449                 return LDB_ERR_OPERATIONS_ERROR;
1450         }
1451
1452         ac->dom_req->op.search.tree = ldb_parse_tree(ac->dom_req, filter);
1453         if (ac->dom_req->op.search.tree == NULL) {
1454                 ldb_set_errstring(ac->module->ldb, "Invalid search filter");
1455                 talloc_free(ac->dom_req);
1456                 return LDB_ERR_OPERATIONS_ERROR;
1457         }
1458         ac->dom_req->op.search.attrs = attrs;
1459         ac->dom_req->controls = NULL;
1460         ac->dom_req->context = ac;
1461         ac->dom_req->callback = get_domain_data_callback;
1462         ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->dom_req);
1463
1464         return LDB_SUCCESS;
1465 }
1466
1467 static struct domain_data *get_domain_data(struct ldb_module *module, void *ctx, struct ldb_reply *res)
1468 {
1469         struct domain_data *data;
1470         const char *tmp;
1471         struct ph_context *ac;
1472         char *p;
1473
1474         ac = talloc_get_type(ctx, struct ph_context);
1475
1476         data = talloc_zero(ac, struct domain_data);
1477         if (data == NULL) {
1478                 return NULL;
1479         }
1480
1481         if (res == NULL) {
1482                 ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Could not find this user's domain: %s!\n", dom_sid_string(data, ac->domain_sid));
1483                 talloc_free(data);
1484                 return NULL;
1485         }
1486
1487         data->pwdProperties= samdb_result_uint(res->message, "pwdProperties", 0);
1488         data->store_cleartext = data->pwdProperties & DOMAIN_PASSWORD_STORE_CLEARTEXT;
1489         data->pwdHistoryLength = samdb_result_uint(res->message, "pwdHistoryLength", 0);
1490
1491         /* For a domain DN, this puts things in dotted notation */
1492         /* For builtin domains, this will give details for the host,
1493          * but that doesn't really matter, as it's just used for salt
1494          * and kerberos principals, which don't exist here */
1495
1496         tmp = ldb_dn_canonical_string(ctx, res->message->dn);
1497         if (!tmp) {
1498                 return NULL;
1499         }
1500
1501         /* But it puts a trailing (or just before 'builtin') / on things, so kill that */
1502         p = strchr(tmp, '/');
1503         if (p) {
1504                 p[0] = '\0';
1505         }
1506
1507         if (tmp != NULL) {
1508                 data->dns_domain = strlower_talloc(data, tmp);
1509                 if (data->dns_domain == NULL) {
1510                         ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
1511                         return NULL;
1512                 }
1513                 data->realm = strupper_talloc(data, tmp);
1514                 if (data->realm == NULL) {
1515                         ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
1516                         return NULL;
1517                 }
1518                 p = strchr(tmp, '.');
1519                 if (p) {
1520                         p[0] = '\0';
1521                 }
1522                 data->netbios_domain = strupper_talloc(data, tmp);
1523                 if (data->netbios_domain == NULL) {
1524                         ldb_debug(module->ldb, LDB_DEBUG_ERROR, "Out of memory!\n");
1525                         return NULL;
1526                 }
1527         }
1528
1529         return data;
1530 }
1531
1532 static int password_hash_add(struct ldb_module *module, struct ldb_request *req)
1533 {
1534         struct ldb_handle *h;
1535         struct ph_context *ac;
1536         struct ldb_message_element *sambaAttr;
1537         struct ldb_message_element *ntAttr;
1538         struct ldb_message_element *lmAttr;
1539         int ret;
1540
1541         ldb_debug(module->ldb, LDB_DEBUG_TRACE, "password_hash_add\n");
1542
1543         if (ldb_dn_is_special(req->op.add.message->dn)) { /* do not manipulate our control entries */
1544                 return ldb_next_request(module, req);
1545         }
1546
1547         /* If the caller is manipulating the local passwords directly, let them pass */
1548         if (ldb_dn_compare_base(ldb_dn_new(req, module->ldb, LOCAL_BASE),
1549                                 req->op.add.message->dn) == 0) {
1550                 return ldb_next_request(module, req);
1551         }
1552
1553         /* nobody must touch this fields */
1554         if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
1555                 return LDB_ERR_UNWILLING_TO_PERFORM;
1556         }
1557         if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
1558                 return LDB_ERR_UNWILLING_TO_PERFORM;
1559         }
1560         if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
1561                 return LDB_ERR_UNWILLING_TO_PERFORM;
1562         }
1563
1564         /* If no part of this ADD touches the userPassword, or the NT
1565          * or LM hashes, then we don't need to make any changes.  */
1566
1567         sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
1568         ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
1569         lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
1570
1571         if ((!sambaAttr) && (!ntAttr) && (!lmAttr)) {
1572                 return ldb_next_request(module, req);
1573         }
1574
1575         /* if it is not an entry of type person its an error */
1576         /* TODO: remove this when userPassword will be in schema */
1577         if (!ldb_msg_check_string_attribute(req->op.add.message, "objectClass", "person")) {
1578                 ldb_set_errstring(module->ldb, "Cannot set a password on entry that does not have objectClass 'person'");
1579                 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1580         }
1581
1582         /* check userPassword is single valued here */
1583         /* TODO: remove this when userPassword will be single valued in schema */
1584         if (sambaAttr && sambaAttr->num_values > 1) {
1585                 ldb_set_errstring(module->ldb, "mupltiple values for userPassword not allowed!\n");
1586                 return LDB_ERR_CONSTRAINT_VIOLATION;
1587         }
1588
1589         if (ntAttr && (ntAttr->num_values > 1)) {
1590                 ldb_set_errstring(module->ldb, "mupltiple values for unicodePwd not allowed!\n");
1591                 return LDB_ERR_CONSTRAINT_VIOLATION;
1592         }
1593         if (lmAttr && (lmAttr->num_values > 1)) {
1594                 ldb_set_errstring(module->ldb, "mupltiple values for dBCSPwd not allowed!\n");
1595                 return LDB_ERR_CONSTRAINT_VIOLATION;
1596         }
1597
1598         if (sambaAttr && sambaAttr->num_values == 0) {
1599                 ldb_set_errstring(module->ldb, "userPassword must have a value!\n");
1600                 return LDB_ERR_CONSTRAINT_VIOLATION;
1601         }
1602
1603         if (ntAttr && (ntAttr->num_values == 0)) {
1604                 ldb_set_errstring(module->ldb, "unicodePwd must have a value!\n");
1605                 return LDB_ERR_CONSTRAINT_VIOLATION;
1606         }
1607         if (lmAttr && (lmAttr->num_values == 0)) {
1608                 ldb_set_errstring(module->ldb, "dBCSPwd must have a value!\n");
1609                 return LDB_ERR_CONSTRAINT_VIOLATION;
1610         }
1611
1612         h = ph_init_handle(req, module, PH_ADD);
1613         if (!h) {
1614                 return LDB_ERR_OPERATIONS_ERROR;
1615         }
1616         ac = talloc_get_type(h->private_data, struct ph_context);
1617
1618         /* get user domain data */
1619         ac->domain_sid = samdb_result_sid_prefix(ac, req->op.add.message, "objectSid");
1620         if (ac->domain_sid == NULL) {
1621                 ldb_debug(module->ldb, LDB_DEBUG_ERROR, "can't handle entry with missing objectSid!\n");
1622                 return LDB_ERR_OPERATIONS_ERROR;
1623         }
1624
1625         ret = build_domain_data_request(ac);
1626         if (ret != LDB_SUCCESS) {
1627                 return ret;
1628         }
1629
1630         ac->step = PH_ADD_SEARCH_DOM;
1631
1632         req->handle = h;
1633
1634         return ldb_next_request(module, ac->dom_req);
1635 }
1636
1637 static int password_hash_add_do_add(struct ldb_handle *h) {
1638
1639         struct ph_context *ac;
1640         struct domain_data *domain;
1641         struct smb_krb5_context *smb_krb5_context;
1642         struct ldb_message *msg;
1643         struct setup_password_fields_io io;
1644         int ret;
1645
1646         ac = talloc_get_type(h->private_data, struct ph_context);
1647
1648         domain = get_domain_data(ac->module, ac, ac->dom_res);
1649         if (domain == NULL) {
1650                 return LDB_ERR_OPERATIONS_ERROR;
1651         }
1652
1653         ac->down_req = talloc(ac, struct ldb_request);
1654         if (ac->down_req == NULL) {
1655                 return LDB_ERR_OPERATIONS_ERROR;
1656         }
1657
1658         *(ac->down_req) = *(ac->orig_req);
1659         ac->down_req->op.add.message = msg = ldb_msg_copy_shallow(ac->down_req, ac->orig_req->op.add.message);
1660         if (ac->down_req->op.add.message == NULL) {
1661                 return LDB_ERR_OPERATIONS_ERROR;
1662         }
1663
1664         /* Some operations below require kerberos contexts */
1665         if (smb_krb5_init_context(ac->down_req,
1666                                   ldb_get_opaque(h->module->ldb, "EventContext"),
1667                                   (struct loadparm_context *)ldb_get_opaque(h->module->ldb, "loadparm"),
1668                                   &smb_krb5_context) != 0) {
1669                 return LDB_ERR_OPERATIONS_ERROR;
1670         }
1671
1672         ZERO_STRUCT(io);
1673         io.ac                           = ac;
1674         io.domain                       = domain;
1675         io.smb_krb5_context             = smb_krb5_context;
1676
1677         io.u.user_account_control       = samdb_result_uint(msg, "userAccountControl", 0);
1678         io.u.sAMAccountName             = samdb_result_string(msg, "samAccountName", NULL);
1679         io.u.user_principal_name        = samdb_result_string(msg, "userPrincipalName", NULL);
1680         io.u.is_computer                = ldb_msg_check_string_attribute(msg, "objectClass", "computer");
1681
1682         io.n.cleartext                  = samdb_result_string(msg, "userPassword", NULL);
1683         io.n.nt_hash                    = samdb_result_hash(io.ac, msg, "unicodePwd");
1684         io.n.lm_hash                    = samdb_result_hash(io.ac, msg, "dBCSPwd");
1685
1686         /* remove attributes */
1687         if (io.n.cleartext) ldb_msg_remove_attr(msg, "userPassword");
1688         if (io.n.nt_hash) ldb_msg_remove_attr(msg, "unicodePwd");
1689         if (io.n.lm_hash) ldb_msg_remove_attr(msg, "dBCSPwd");
1690         ldb_msg_remove_attr(msg, "pwdLastSet");
1691         io.o.kvno = samdb_result_uint(msg, "msDs-KeyVersionNumber", 1) - 1;
1692         ldb_msg_remove_attr(msg, "msDs-KeyVersionNumber");
1693
1694         ret = setup_password_fields(&io);
1695         if (ret != LDB_SUCCESS) {
1696                 return ret;
1697         }
1698
1699         if (io.g.nt_hash) {
1700                 ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
1701                                          "unicodePwd", io.g.nt_hash);
1702                 if (ret != LDB_SUCCESS) {
1703                         return ret;
1704                 }
1705         }
1706         if (io.g.lm_hash) {
1707                 ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
1708                                          "dBCSPwd", io.g.lm_hash);
1709                 if (ret != LDB_SUCCESS) {
1710                         return ret;
1711                 }
1712         }
1713         if (io.g.nt_history_len > 0) {
1714                 ret = samdb_msg_add_hashes(ac, msg,
1715                                            "ntPwdHistory",
1716                                            io.g.nt_history,
1717                                            io.g.nt_history_len);
1718                 if (ret != LDB_SUCCESS) {
1719                         return ret;
1720                 }
1721         }
1722         if (io.g.lm_history_len > 0) {
1723                 ret = samdb_msg_add_hashes(ac, msg,
1724                                            "lmPwdHistory",
1725                                            io.g.lm_history,
1726                                            io.g.lm_history_len);
1727                 if (ret != LDB_SUCCESS) {
1728                         return ret;
1729                 }
1730         }
1731         if (io.g.supplemental.length > 0) {
1732                 ret = ldb_msg_add_value(msg, "supplementalCredentials",
1733                                         &io.g.supplemental, NULL);
1734                 if (ret != LDB_SUCCESS) {
1735                         return ret;
1736                 }
1737         }
1738         ret = samdb_msg_add_uint64(ac->module->ldb, ac, msg,
1739                                    "pwdLastSet",
1740                                    io.g.last_set);
1741         if (ret != LDB_SUCCESS) {
1742                 return ret;
1743         }
1744         ret = samdb_msg_add_uint(ac->module->ldb, ac, msg,
1745                                  "msDs-KeyVersionNumber",
1746                                  io.g.kvno);
1747         if (ret != LDB_SUCCESS) {
1748                 return ret;
1749         }
1750
1751         h->state = LDB_ASYNC_INIT;
1752         h->status = LDB_SUCCESS;
1753
1754         ac->step = PH_ADD_DO_ADD;
1755
1756         ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->down_req);
1757
1758         /* perform the operation */
1759         return ldb_next_request(ac->module, ac->down_req);
1760 }
1761
1762 static int password_hash_mod_search_self(struct ldb_handle *h);
1763
1764 static int password_hash_modify(struct ldb_module *module, struct ldb_request *req)
1765 {
1766         struct ldb_handle *h;
1767         struct ph_context *ac;
1768         struct ldb_message_element *sambaAttr;
1769         struct ldb_message_element *ntAttr;
1770         struct ldb_message_element *lmAttr;
1771         struct ldb_message *msg;
1772
1773         ldb_debug(module->ldb, LDB_DEBUG_TRACE, "password_hash_modify\n");
1774
1775         if (ldb_dn_is_special(req->op.mod.message->dn)) { /* do not manipulate our control entries */
1776                 return ldb_next_request(module, req);
1777         }
1778
1779         /* If the caller is manipulating the local passwords directly, let them pass */
1780         if (ldb_dn_compare_base(ldb_dn_new(req, module->ldb, LOCAL_BASE),
1781                                 req->op.mod.message->dn) == 0) {
1782                 return ldb_next_request(module, req);
1783         }
1784
1785         /* nobody must touch password Histories */
1786         if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
1787                 return LDB_ERR_UNWILLING_TO_PERFORM;
1788         }
1789         if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
1790                 return LDB_ERR_UNWILLING_TO_PERFORM;
1791         }
1792         if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
1793                 return LDB_ERR_UNWILLING_TO_PERFORM;
1794         }
1795
1796         sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
1797         ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
1798         lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
1799
1800         /* If no part of this touches the userPassword OR unicodePwd and/or dBCSPwd, then we don't
1801          * need to make any changes.  For password changes/set there should
1802          * be a 'delete' or a 'modify' on this attribute. */
1803         if ((!sambaAttr) && (!ntAttr) && (!lmAttr)) {
1804                 return ldb_next_request(module, req);
1805         }
1806
1807         /* check passwords are single valued here */
1808         /* TODO: remove this when passwords will be single valued in schema */
1809         if (sambaAttr && (sambaAttr->num_values > 1)) {
1810                 return LDB_ERR_CONSTRAINT_VIOLATION;
1811         }
1812         if (ntAttr && (ntAttr->num_values > 1)) {
1813                 return LDB_ERR_CONSTRAINT_VIOLATION;
1814         }
1815         if (lmAttr && (lmAttr->num_values > 1)) {
1816                 return LDB_ERR_CONSTRAINT_VIOLATION;
1817         }
1818
1819         h = ph_init_handle(req, module, PH_MOD);
1820         if (!h) {
1821                 return LDB_ERR_OPERATIONS_ERROR;
1822         }
1823         ac = talloc_get_type(h->private_data, struct ph_context);
1824
1825         /* return or own handle to deal with this call */
1826         req->handle = h;
1827
1828         /* prepare the first operation */
1829         ac->down_req = talloc_zero(ac, struct ldb_request);
1830         if (ac->down_req == NULL) {
1831                 ldb_set_errstring(module->ldb, "Out of memory!");
1832                 return LDB_ERR_OPERATIONS_ERROR;
1833         }
1834
1835         *(ac->down_req) = *req; /* copy the request */
1836
1837         /* use a new message structure so that we can modify it */
1838         ac->down_req->op.mod.message = msg = ldb_msg_copy_shallow(ac->down_req, req->op.mod.message);
1839
1840         /* - remove any imodification to the password from the first commit
1841          *   we will make the real modification later */
1842         if (sambaAttr) ldb_msg_remove_attr(msg, "userPassword");
1843         if (ntAttr) ldb_msg_remove_attr(msg, "unicodePwd");
1844         if (lmAttr) ldb_msg_remove_attr(msg, "dBCSPwd");
1845
1846         /* if there was nothing else to be modify skip to next step */
1847         if (msg->num_elements == 0) {
1848                 talloc_free(ac->down_req);
1849                 ac->down_req = NULL;
1850                 return password_hash_mod_search_self(h);
1851         }
1852
1853         ac->down_req->context = NULL;
1854         ac->down_req->callback = NULL;
1855
1856         ac->step = PH_MOD_DO_REQ;
1857
1858         ldb_set_timeout_from_prev_req(module->ldb, req, ac->down_req);
1859
1860         return ldb_next_request(module, ac->down_req);
1861 }
1862
1863 static int get_self_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
1864 {
1865         struct ph_context *ac;
1866
1867         ac = talloc_get_type(context, struct ph_context);
1868
1869         /* we are interested only in the single reply (base search) we receive here */
1870         if (ares->type == LDB_REPLY_ENTRY) {
1871                 if (ac->search_res != NULL) {
1872                         ldb_set_errstring(ldb, "Too many results");
1873                         talloc_free(ares);
1874                         return LDB_ERR_OPERATIONS_ERROR;
1875                 }
1876
1877                 /* if it is not an entry of type person this is an error */
1878                 /* TODO: remove this when userPassword will be in schema */
1879                 if (!ldb_msg_check_string_attribute(ares->message, "objectClass", "person")) {
1880                         ldb_set_errstring(ldb, "Object class violation");
1881                         talloc_free(ares);
1882                         return LDB_ERR_OBJECT_CLASS_VIOLATION;
1883                 }
1884
1885                 ac->search_res = talloc_steal(ac, ares);
1886         } else {
1887                 talloc_free(ares);
1888         }
1889
1890         return LDB_SUCCESS;
1891 }
1892
1893 static int password_hash_mod_search_self(struct ldb_handle *h) {
1894
1895         struct ph_context *ac;
1896         static const char * const attrs[] = { "userAccountControl", "lmPwdHistory",
1897                                               "ntPwdHistory",
1898                                               "objectSid", "msDS-KeyVersionNumber",
1899                                               "objectClass", "userPrincipalName",
1900                                               "sAMAccountName",
1901                                               "dBCSPwd", "unicodePwd",
1902                                               "supplementalCredentials",
1903                                               NULL };
1904
1905         ac = talloc_get_type(h->private_data, struct ph_context);
1906
1907         /* prepare the search operation */
1908         ac->search_req = talloc_zero(ac, struct ldb_request);
1909         if (ac->search_req == NULL) {
1910                 ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "Out of Memory!\n");
1911                 return LDB_ERR_OPERATIONS_ERROR;
1912         }
1913
1914         ac->search_req->operation = LDB_SEARCH;
1915         ac->search_req->op.search.base = ac->orig_req->op.mod.message->dn;
1916         ac->search_req->op.search.scope = LDB_SCOPE_BASE;
1917         ac->search_req->op.search.tree = ldb_parse_tree(ac->search_req, NULL);
1918         if (ac->search_req->op.search.tree == NULL) {
1919                 ldb_set_errstring(ac->module->ldb, "Invalid search filter");
1920                 return LDB_ERR_OPERATIONS_ERROR;
1921         }
1922         ac->search_req->op.search.attrs = attrs;
1923         ac->search_req->controls = NULL;
1924         ac->search_req->context = ac;
1925         ac->search_req->callback = get_self_callback;
1926         ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->search_req);
1927
1928         ac->step = PH_MOD_SEARCH_SELF;
1929
1930         return ldb_next_request(ac->module, ac->search_req);
1931 }
1932
1933 static int password_hash_mod_search_dom(struct ldb_handle *h) {
1934
1935         struct ph_context *ac;
1936         int ret;
1937
1938         ac = talloc_get_type(h->private_data, struct ph_context);
1939
1940         /* get object domain sid */
1941         ac->domain_sid = samdb_result_sid_prefix(ac, ac->search_res->message, "objectSid");
1942         if (ac->domain_sid == NULL) {
1943                 ldb_debug(ac->module->ldb, LDB_DEBUG_ERROR, "can't handle entry with missing objectSid!\n");
1944                 return LDB_ERR_OPERATIONS_ERROR;
1945         }
1946
1947         /* get user domain data */
1948         ret = build_domain_data_request(ac);
1949         if (ret != LDB_SUCCESS) {
1950                 return ret;
1951         }
1952
1953         ac->step = PH_MOD_SEARCH_DOM;
1954
1955         return ldb_next_request(ac->module, ac->dom_req);
1956 }
1957
1958 static int password_hash_mod_do_mod(struct ldb_handle *h) {
1959
1960         struct ph_context *ac;
1961         struct domain_data *domain;
1962         struct smb_krb5_context *smb_krb5_context;
1963         struct ldb_message *msg;
1964         struct ldb_message *orig_msg;
1965         struct ldb_message *searched_msg;
1966         struct setup_password_fields_io io;
1967         int ret;
1968
1969         ac = talloc_get_type(h->private_data, struct ph_context);
1970
1971         domain = get_domain_data(ac->module, ac, ac->dom_res);
1972         if (domain == NULL) {
1973                 return LDB_ERR_OPERATIONS_ERROR;
1974         }
1975
1976         ac->mod_req = talloc(ac, struct ldb_request);
1977         if (ac->mod_req == NULL) {
1978                 return LDB_ERR_OPERATIONS_ERROR;
1979         }
1980
1981         *(ac->mod_req) = *(ac->orig_req);
1982
1983         /* use a new message structure so that we can modify it */
1984         ac->mod_req->op.mod.message = msg = ldb_msg_new(ac->mod_req);
1985         if (msg == NULL) {
1986                 return LDB_ERR_OPERATIONS_ERROR;
1987         }
1988
1989         /* modify dn */
1990         msg->dn = ac->orig_req->op.mod.message->dn;
1991
1992         /* Some operations below require kerberos contexts */
1993         if (smb_krb5_init_context(ac->mod_req,
1994                                   ldb_get_opaque(h->module->ldb, "EventContext"),
1995                                   (struct loadparm_context *)ldb_get_opaque(h->module->ldb, "loadparm"),
1996                                   &smb_krb5_context) != 0) {
1997                 return LDB_ERR_OPERATIONS_ERROR;
1998         }
1999
2000         orig_msg        = discard_const(ac->orig_req->op.mod.message);
2001         searched_msg    = ac->search_res->message;
2002
2003         ZERO_STRUCT(io);
2004         io.ac                           = ac;
2005         io.domain                       = domain;
2006         io.smb_krb5_context             = smb_krb5_context;
2007
2008         io.u.user_account_control       = samdb_result_uint(searched_msg, "userAccountControl", 0);
2009         io.u.sAMAccountName             = samdb_result_string(searched_msg, "samAccountName", NULL);
2010         io.u.user_principal_name        = samdb_result_string(searched_msg, "userPrincipalName", NULL);
2011         io.u.is_computer                = ldb_msg_check_string_attribute(searched_msg, "objectClass", "computer");
2012
2013         io.n.cleartext                  = samdb_result_string(orig_msg, "userPassword", NULL);
2014         io.n.nt_hash                    = samdb_result_hash(io.ac, orig_msg, "unicodePwd");
2015         io.n.lm_hash                    = samdb_result_hash(io.ac, orig_msg, "dBCSPwd");
2016
2017         io.o.kvno                       = samdb_result_uint(searched_msg, "msDs-KeyVersionNumber", 0);
2018         io.o.nt_history_len             = samdb_result_hashes(io.ac, searched_msg, "ntPwdHistory", &io.o.nt_history);
2019         io.o.lm_history_len             = samdb_result_hashes(io.ac, searched_msg, "lmPwdHistory", &io.o.lm_history);
2020         io.o.supplemental               = ldb_msg_find_ldb_val(searched_msg, "supplementalCredentials");
2021
2022         ret = setup_password_fields(&io);
2023         if (ret != LDB_SUCCESS) {
2024                 return ret;
2025         }
2026
2027         /* make sure we replace all the old attributes */
2028         ret = ldb_msg_add_empty(msg, "unicodePwd", LDB_FLAG_MOD_REPLACE, NULL);
2029         ret = ldb_msg_add_empty(msg, "dBCSPwd", LDB_FLAG_MOD_REPLACE, NULL);
2030         ret = ldb_msg_add_empty(msg, "ntPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
2031         ret = ldb_msg_add_empty(msg, "lmPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
2032         ret = ldb_msg_add_empty(msg, "supplementalCredentials", LDB_FLAG_MOD_REPLACE, NULL);
2033         ret = ldb_msg_add_empty(msg, "pwdLastSet", LDB_FLAG_MOD_REPLACE, NULL);
2034         ret = ldb_msg_add_empty(msg, "msDs-KeyVersionNumber", LDB_FLAG_MOD_REPLACE, NULL);
2035
2036         if (io.g.nt_hash) {
2037                 ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
2038                                          "unicodePwd", io.g.nt_hash);
2039                 if (ret != LDB_SUCCESS) {
2040                         return ret;
2041                 }
2042         }
2043         if (io.g.lm_hash) {
2044                 ret = samdb_msg_add_hash(ac->module->ldb, ac, msg,
2045                                          "dBCSPwd", io.g.lm_hash);
2046                 if (ret != LDB_SUCCESS) {
2047                         return ret;
2048                 }
2049         }
2050         if (io.g.nt_history_len > 0) {
2051                 ret = samdb_msg_add_hashes(ac, msg,
2052                                            "ntPwdHistory",
2053                                            io.g.nt_history,
2054                                            io.g.nt_history_len);
2055                 if (ret != LDB_SUCCESS) {
2056                         return ret;
2057                 }
2058         }
2059         if (io.g.lm_history_len > 0) {
2060                 ret = samdb_msg_add_hashes(ac, msg,
2061                                            "lmPwdHistory",
2062                                            io.g.lm_history,
2063                                            io.g.lm_history_len);
2064                 if (ret != LDB_SUCCESS) {
2065                         return ret;
2066                 }
2067         }
2068         if (io.g.supplemental.length > 0) {
2069                 ret = ldb_msg_add_value(msg, "supplementalCredentials",
2070                                         &io.g.supplemental, NULL);
2071                 if (ret != LDB_SUCCESS) {
2072                         return ret;
2073                 }
2074         }
2075         ret = samdb_msg_add_uint64(ac->module->ldb, ac, msg,
2076                                    "pwdLastSet",
2077                                    io.g.last_set);
2078         if (ret != LDB_SUCCESS) {
2079                 return ret;
2080         }
2081         ret = samdb_msg_add_uint(ac->module->ldb, ac, msg,
2082                                  "msDs-KeyVersionNumber",
2083                                  io.g.kvno);
2084         if (ret != LDB_SUCCESS) {
2085                 return ret;
2086         }
2087
2088         h->state = LDB_ASYNC_INIT;
2089         h->status = LDB_SUCCESS;
2090
2091         ac->step = PH_MOD_DO_MOD;
2092
2093         ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->mod_req);
2094
2095         /* perform the search */
2096         return ldb_next_request(ac->module, ac->mod_req);
2097 }
2098
2099 static int ph_wait(struct ldb_handle *handle) {
2100         struct ph_context *ac;
2101         int ret;
2102
2103         if (!handle || !handle->private_data) {
2104                 return LDB_ERR_OPERATIONS_ERROR;
2105         }
2106
2107         if (handle->state == LDB_ASYNC_DONE) {
2108                 return handle->status;
2109         }
2110
2111         handle->state = LDB_ASYNC_PENDING;
2112         handle->status = LDB_SUCCESS;
2113
2114         ac = talloc_get_type(handle->private_data, struct ph_context);
2115
2116         switch (ac->step) {
2117         case PH_ADD_SEARCH_DOM:
2118                 ret = ldb_wait(ac->dom_req->handle, LDB_WAIT_NONE);
2119
2120                 if (ret != LDB_SUCCESS) {
2121                         handle->status = ret;
2122                         goto done;
2123                 }
2124                 if (ac->dom_req->handle->status != LDB_SUCCESS) {
2125                         handle->status = ac->dom_req->handle->status;
2126                         goto done;
2127                 }
2128
2129                 if (ac->dom_req->handle->state != LDB_ASYNC_DONE) {
2130                         return LDB_SUCCESS;
2131                 }
2132
2133                 /* domain search done, go on */
2134                 return password_hash_add_do_add(handle);
2135
2136         case PH_ADD_DO_ADD:
2137                 ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
2138
2139                 if (ret != LDB_SUCCESS) {
2140                         handle->status = ret;
2141                         goto done;
2142                 }
2143                 if (ac->down_req->handle->status != LDB_SUCCESS) {
2144                         handle->status = ac->down_req->handle->status;
2145                         goto done;
2146                 }
2147
2148                 if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
2149                         return LDB_SUCCESS;
2150                 }
2151
2152                 break;
2153
2154         case PH_MOD_DO_REQ:
2155                 ret = ldb_wait(ac->down_req->handle, LDB_WAIT_NONE);
2156
2157                 if (ret != LDB_SUCCESS) {
2158                         handle->status = ret;
2159                         goto done;
2160                 }
2161                 if (ac->down_req->handle->status != LDB_SUCCESS) {
2162                         handle->status = ac->down_req->handle->status;
2163                         goto done;
2164                 }
2165
2166                 if (ac->down_req->handle->state != LDB_ASYNC_DONE) {
2167                         return LDB_SUCCESS;
2168                 }
2169
2170                 /* non-password mods done, go on */
2171                 return password_hash_mod_search_self(handle);
2172
2173         case PH_MOD_SEARCH_SELF:
2174                 ret = ldb_wait(ac->search_req->handle, LDB_WAIT_NONE);
2175
2176                 if (ret != LDB_SUCCESS) {
2177                         handle->status = ret;
2178                         goto done;
2179                 }
2180                 if (ac->search_req->handle->status != LDB_SUCCESS) {
2181                         handle->status = ac->search_req->handle->status;
2182                         goto done;
2183                 }
2184
2185                 if (ac->search_req->handle->state != LDB_ASYNC_DONE) {
2186                         return LDB_SUCCESS;
2187                 }
2188
2189                 if (ac->search_res == NULL) {
2190                         return LDB_ERR_NO_SUCH_OBJECT;
2191                 }
2192
2193                 /* self search done, go on */
2194                 return password_hash_mod_search_dom(handle);
2195
2196         case PH_MOD_SEARCH_DOM:
2197                 ret = ldb_wait(ac->dom_req->handle, LDB_WAIT_NONE);
2198
2199                 if (ret != LDB_SUCCESS) {
2200                         handle->status = ret;
2201                         goto done;
2202                 }
2203                 if (ac->dom_req->handle->status != LDB_SUCCESS) {
2204                         handle->status = ac->dom_req->handle->status;
2205                         goto done;
2206                 }
2207
2208                 if (ac->dom_req->handle->state != LDB_ASYNC_DONE) {
2209                         return LDB_SUCCESS;
2210                 }
2211
2212                 /* domain search done, go on */
2213                 return password_hash_mod_do_mod(handle);
2214
2215         case PH_MOD_DO_MOD:
2216                 ret = ldb_wait(ac->mod_req->handle, LDB_WAIT_NONE);
2217
2218                 if (ret != LDB_SUCCESS) {
2219                         handle->status = ret;
2220                         goto done;
2221                 }
2222                 if (ac->mod_req->handle->status != LDB_SUCCESS) {
2223                         handle->status = ac->mod_req->handle->status;
2224                         goto done;
2225                 }
2226
2227                 if (ac->mod_req->handle->state != LDB_ASYNC_DONE) {
2228                         return LDB_SUCCESS;
2229                 }
2230
2231                 break;
2232
2233         default:
2234                 ret = LDB_ERR_OPERATIONS_ERROR;
2235                 goto done;
2236         }
2237
2238         ret = LDB_SUCCESS;
2239
2240 done:
2241         handle->state = LDB_ASYNC_DONE;
2242         return ret;
2243 }
2244
2245 static int ph_wait_all(struct ldb_handle *handle) {
2246
2247         int ret;
2248
2249         while (handle->state != LDB_ASYNC_DONE) {
2250                 ret = ph_wait(handle);
2251                 if (ret != LDB_SUCCESS) {
2252                         return ret;
2253                 }
2254         }
2255
2256         return handle->status;
2257 }
2258
2259 static int password_hash_wait(struct ldb_handle *handle, enum ldb_wait_type type)
2260 {
2261         if (type == LDB_WAIT_ALL) {
2262                 return ph_wait_all(handle);
2263         } else {
2264                 return ph_wait(handle);
2265         }
2266 }
2267
2268 _PUBLIC_ const struct ldb_module_ops ldb_password_hash_module_ops = {
2269         .name          = "password_hash",
2270         .add           = password_hash_add,
2271         .modify        = password_hash_modify,
2272         .wait          = password_hash_wait
2273 };