source4/dsdb/samdb/ldb_modules/password_hash.c

   1 /*
   2    ldb database module
   3
   4    Copyright (C) Simo Sorce  2004-2008
   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_module.h"
  37 #include "librpc/gen_ndr/misc.h"
  38 #include "librpc/gen_ndr/samr.h"
  39 #include "libcli/auth/libcli_auth.h"
  40 #include "libcli/security/security.h"
  41 #include "system/kerberos.h"
  42 #include "auth/kerberos/kerberos.h"
  43 #include "system/time.h"
  44 #include "dsdb/samdb/samdb.h"
  45 #include "dsdb/common/flags.h"
  46 #include "dsdb/samdb/ldb_modules/password_modules.h"
  47 #include "librpc/ndr/libndr.h"
  48 #include "librpc/gen_ndr/ndr_drsblobs.h"
  49 #include "../lib/crypto/crypto.h"
  50 #include "param/param.h"
  51
  52 /* If we have decided there is reason to work on this request, then
  53  * setup all the password hash types correctly.
  54  *
  55  * If the administrator doesn't want the userPassword stored (set in the
  56  * domain and per-account policies) then we must strip that out before
  57  * we do the first operation.
  58  *
  59  * Once this is done (which could update anything at all), we
  60  * calculate the password hashes.
  61  *
  62  * This function must not only update the unicodePwd, dBCSPwd and
  63  * supplementalCredentials fields, it must also atomicly increment the
  64  * msDS-KeyVersionNumber.  We should be in a transaction, so all this
  65  * should be quite safe...
  66  *
  67  * Finally, if the administrator has requested that a password history
  68  * be maintained, then this should also be written out.
  69  *
  70  */
  71
  72 struct ph_context {
  73
  74         struct ldb_module *module;
  75         struct ldb_request *req;
  76
  77         struct ldb_request *dom_req;
  78         struct ldb_reply *dom_res;
  79
  80         struct ldb_reply *search_res;
  81
  82         struct dom_sid *domain_sid;
  83         struct domain_data *domain;
  84 };
  85
  86 struct domain_data {
  87         bool store_cleartext;
  88         uint_t pwdProperties;
  89         uint_t pwdHistoryLength;
  90         char *netbios_domain;
  91         char *dns_domain;
  92         char *realm;
  93 };
  94
  95 struct setup_password_fields_io {
  96         struct ph_context *ac;
  97         struct domain_data *domain;
  98         struct smb_krb5_context *smb_krb5_context;
  99
 100         /* infos about the user account */
 101         struct {
 102                 uint32_t user_account_control;
 103                 const char *sAMAccountName;
 104                 const char *user_principal_name;
 105                 bool is_computer;
 106         } u;
 107
 108         /* new credentials */
 109         struct {
 110                 const struct ldb_val *cleartext_utf8;
 111                 const struct ldb_val *cleartext_utf16;
 112                 struct ldb_val quoted_utf16;
 113                 struct samr_Password *nt_hash;
 114                 struct samr_Password *lm_hash;
 115         } n;
 116
 117         /* old credentials */
 118         struct {
 119                 uint32_t nt_history_len;
 120                 struct samr_Password *nt_history;
 121                 uint32_t lm_history_len;
 122                 struct samr_Password *lm_history;
 123                 const struct ldb_val *supplemental;
 124                 struct supplementalCredentialsBlob scb;
 125                 uint32_t kvno;
 126         } o;
 127
 128         /* generated credentials */
 129         struct {
 130                 struct samr_Password *nt_hash;
 131                 struct samr_Password *lm_hash;
 132                 uint32_t nt_history_len;
 133                 struct samr_Password *nt_history;
 134                 uint32_t lm_history_len;
 135                 struct samr_Password *lm_history;
 136                 const char *salt;
 137                 DATA_BLOB aes_256;
 138                 DATA_BLOB aes_128;
 139                 DATA_BLOB des_md5;
 140                 DATA_BLOB des_crc;
 141                 struct ldb_val supplemental;
 142                 NTTIME last_set;
 143                 uint32_t kvno;
 144         } g;
 145 };
 146
 147 /* Get the NT hash, and fill it in as an entry in the password history,
 148    and specify it into io->g.nt_hash */
 149
 150 static int setup_nt_fields(struct setup_password_fields_io *io)
 151 {
 152         struct ldb_context *ldb;
 153         uint32_t i;
 154
 155         io->g.nt_hash = io->n.nt_hash;
 156         ldb = ldb_module_get_ctx(io->ac->module);
 157
 158         if (io->domain->pwdHistoryLength == 0) {
 159                 return LDB_SUCCESS;
 160         }
 161
 162         /* We might not have an old NT password */
 163         io->g.nt_history = talloc_array(io->ac,
 164                                         struct samr_Password,
 165                                         io->domain->pwdHistoryLength);
 166         if (!io->g.nt_history) {
 167                 ldb_oom(ldb);
 168                 return LDB_ERR_OPERATIONS_ERROR;
 169         }
 170
 171         for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.nt_history_len); i++) {
 172                 io->g.nt_history[i+1] = io->o.nt_history[i];
 173         }
 174         io->g.nt_history_len = i + 1;
 175
 176         if (io->g.nt_hash) {
 177                 io->g.nt_history[0] = *io->g.nt_hash;
 178         } else {
 179                 /*
 180                  * TODO: is this correct?
 181                  * the simular behavior is correct for the lm history case
 182                  */
 183                 E_md4hash("", io->g.nt_history[0].hash);
 184         }
 185
 186         return LDB_SUCCESS;
 187 }
 188
 189 /* Get the LANMAN hash, and fill it in as an entry in the password history,
 190    and specify it into io->g.lm_hash */
 191
 192 static int setup_lm_fields(struct setup_password_fields_io *io)
 193 {
 194         struct ldb_context *ldb;
 195         uint32_t i;
 196
 197         io->g.lm_hash = io->n.lm_hash;
 198         ldb = ldb_module_get_ctx(io->ac->module);
 199
 200         if (io->domain->pwdHistoryLength == 0) {
 201                 return LDB_SUCCESS;
 202         }
 203
 204         /* We might not have an old NT password */
 205         io->g.lm_history = talloc_array(io->ac,
 206                                         struct samr_Password,
 207                                         io->domain->pwdHistoryLength);
 208         if (!io->g.lm_history) {
 209                 ldb_oom(ldb);
 210                 return LDB_ERR_OPERATIONS_ERROR;
 211         }
 212
 213         for (i = 0; i < MIN(io->domain->pwdHistoryLength-1, io->o.lm_history_len); i++) {
 214                 io->g.lm_history[i+1] = io->o.lm_history[i];
 215         }
 216         io->g.lm_history_len = i + 1;
 217
 218         if (io->g.lm_hash) {
 219                 io->g.lm_history[0] = *io->g.lm_hash;
 220         } else {
 221                 E_deshash("", io->g.lm_history[0].hash);
 222         }
 223
 224         return LDB_SUCCESS;
 225 }
 226
 227 static int setup_kerberos_keys(struct setup_password_fields_io *io)
 228 {
 229         struct ldb_context *ldb;
 230         krb5_error_code krb5_ret;
 231         Principal *salt_principal;
 232         krb5_salt salt;
 233         krb5_keyblock key;
 234         krb5_data cleartext_data;
 235
 236         ldb = ldb_module_get_ctx(io->ac->module);
 237         cleartext_data.data = io->n.cleartext_utf8->data;
 238         cleartext_data.length = io->n.cleartext_utf8->length;
 239
 240         /* Many, many thanks to lukeh@padl.com for this
 241          * algorithm, described in his Nov 10 2004 mail to
 242          * samba-technical@samba.org */
 243
 244         /*
 245          * Determine a salting principal
 246          */
 247         if (io->u.is_computer) {
 248                 char *name;
 249                 char *saltbody;
 250
 251                 name = talloc_strdup(io->ac, io->u.sAMAccountName);
 252                 if (!name) {
 253                         ldb_oom(ldb);
 254                         return LDB_ERR_OPERATIONS_ERROR;
 255                 }
 256
 257                 if (name[strlen(name)-1] == '$') {
 258                         name[strlen(name)-1] = '\0';
 259                 }
 260
 261                 saltbody = talloc_asprintf(io->ac, "%s.%s", name, io->domain->dns_domain);
 262                 if (!saltbody) {
 263                         ldb_oom(ldb);
 264                         return LDB_ERR_OPERATIONS_ERROR;
 265                 }
 266
 267                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 268                                                &salt_principal,
 269                                                io->domain->realm, "host",
 270                                                saltbody, NULL);
 271         } else if (io->u.user_principal_name) {
 272                 char *user_principal_name;
 273                 char *p;
 274
 275                 user_principal_name = talloc_strdup(io->ac, io->u.user_principal_name);
 276                 if (!user_principal_name) {
 277                         ldb_oom(ldb);
 278                         return LDB_ERR_OPERATIONS_ERROR;
 279                 }
 280
 281                 p = strchr(user_principal_name, '@');
 282                 if (p) {
 283                         p[0] = '\0';
 284                 }
 285
 286                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 287                                                &salt_principal,
 288                                                io->domain->realm, user_principal_name,
 289                                                NULL);
 290         } else {
 291                 krb5_ret = krb5_make_principal(io->smb_krb5_context->krb5_context,
 292                                                &salt_principal,
 293                                                io->domain->realm, io->u.sAMAccountName,
 294                                                NULL);
 295         }
 296         if (krb5_ret) {
 297                 ldb_asprintf_errstring(ldb,
 298                                        "setup_kerberos_keys: "
 299                                        "generation of a salting principal failed: %s",
 300                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 301                 return LDB_ERR_OPERATIONS_ERROR;
 302         }
 303
 304         /*
 305          * create salt from salt_principal
 306          */
 307         krb5_ret = krb5_get_pw_salt(io->smb_krb5_context->krb5_context,
 308                                     salt_principal, &salt);
 309         krb5_free_principal(io->smb_krb5_context->krb5_context, salt_principal);
 310         if (krb5_ret) {
 311                 ldb_asprintf_errstring(ldb,
 312                                        "setup_kerberos_keys: "
 313                                        "generation of krb5_salt failed: %s",
 314                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 315                 return LDB_ERR_OPERATIONS_ERROR;
 316         }
 317         /* create a talloc copy */
 318         io->g.salt = talloc_strndup(io->ac,
 319                                     salt.saltvalue.data,
 320                                     salt.saltvalue.length);
 321         krb5_free_salt(io->smb_krb5_context->krb5_context, salt);
 322         if (!io->g.salt) {
 323                 ldb_oom(ldb);
 324                 return LDB_ERR_OPERATIONS_ERROR;
 325         }
 326         salt.saltvalue.data     = discard_const(io->g.salt);
 327         salt.saltvalue.length   = strlen(io->g.salt);
 328
 329         /*
 330          * create ENCTYPE_AES256_CTS_HMAC_SHA1_96 key out of
 331          * the salt and the cleartext password
 332          */
 333         krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
 334                                                 ENCTYPE_AES256_CTS_HMAC_SHA1_96,
 335                                                 cleartext_data,
 336                                                 salt,
 337                                                 &key);
 338         if (krb5_ret) {
 339                 ldb_asprintf_errstring(ldb,
 340                                        "setup_kerberos_keys: "
 341                                        "generation of a aes256-cts-hmac-sha1-96 key failed: %s",
 342                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 343                 return LDB_ERR_OPERATIONS_ERROR;
 344         }
 345         io->g.aes_256 = data_blob_talloc(io->ac,
 346                                          key.keyvalue.data,
 347                                          key.keyvalue.length);
 348         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 349         if (!io->g.aes_256.data) {
 350                 ldb_oom(ldb);
 351                 return LDB_ERR_OPERATIONS_ERROR;
 352         }
 353
 354         /*
 355          * create ENCTYPE_AES128_CTS_HMAC_SHA1_96 key out of
 356          * the salt and the cleartext password
 357          */
 358         krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
 359                                                 ENCTYPE_AES128_CTS_HMAC_SHA1_96,
 360                                                 cleartext_data,
 361                                                 salt,
 362                                                 &key);
 363         if (krb5_ret) {
 364                 ldb_asprintf_errstring(ldb,
 365                                        "setup_kerberos_keys: "
 366                                        "generation of a aes128-cts-hmac-sha1-96 key failed: %s",
 367                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 368                 return LDB_ERR_OPERATIONS_ERROR;
 369         }
 370         io->g.aes_128 = data_blob_talloc(io->ac,
 371                                          key.keyvalue.data,
 372                                          key.keyvalue.length);
 373         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 374         if (!io->g.aes_128.data) {
 375                 ldb_oom(ldb);
 376                 return LDB_ERR_OPERATIONS_ERROR;
 377         }
 378
 379         /*
 380          * create ENCTYPE_DES_CBC_MD5 key out of
 381          * the salt and the cleartext password
 382          */
 383         krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
 384                                                 ENCTYPE_DES_CBC_MD5,
 385                                                 cleartext_data,
 386                                                 salt,
 387                                                 &key);
 388         if (krb5_ret) {
 389                 ldb_asprintf_errstring(ldb,
 390                                        "setup_kerberos_keys: "
 391                                        "generation of a des-cbc-md5 key failed: %s",
 392                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 393                 return LDB_ERR_OPERATIONS_ERROR;
 394         }
 395         io->g.des_md5 = data_blob_talloc(io->ac,
 396                                          key.keyvalue.data,
 397                                          key.keyvalue.length);
 398         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 399         if (!io->g.des_md5.data) {
 400                 ldb_oom(ldb);
 401                 return LDB_ERR_OPERATIONS_ERROR;
 402         }
 403
 404         /*
 405          * create ENCTYPE_DES_CBC_CRC key out of
 406          * the salt and the cleartext password
 407          */
 408         krb5_ret = krb5_string_to_key_data_salt(io->smb_krb5_context->krb5_context,
 409                                                 ENCTYPE_DES_CBC_CRC,
 410                                                 cleartext_data,
 411                                                 salt,
 412                                                 &key);
 413         if (krb5_ret) {
 414                 ldb_asprintf_errstring(ldb,
 415                                        "setup_kerberos_keys: "
 416                                        "generation of a des-cbc-crc key failed: %s",
 417                                        smb_get_krb5_error_message(io->smb_krb5_context->krb5_context, krb5_ret, io->ac));
 418                 return LDB_ERR_OPERATIONS_ERROR;
 419         }
 420         io->g.des_crc = data_blob_talloc(io->ac,
 421                                          key.keyvalue.data,
 422                                          key.keyvalue.length);
 423         krb5_free_keyblock_contents(io->smb_krb5_context->krb5_context, &key);
 424         if (!io->g.des_crc.data) {
 425                 ldb_oom(ldb);
 426                 return LDB_ERR_OPERATIONS_ERROR;
 427         }
 428
 429         return LDB_SUCCESS;
 430 }
 431
 432 static int setup_primary_kerberos(struct setup_password_fields_io *io,
 433                                   const struct supplementalCredentialsBlob *old_scb,
 434                                   struct package_PrimaryKerberosBlob *pkb)
 435 {
 436         struct ldb_context *ldb;
 437         struct package_PrimaryKerberosCtr3 *pkb3 = &pkb->ctr.ctr3;
 438         struct supplementalCredentialsPackage *old_scp = NULL;
 439         struct package_PrimaryKerberosBlob _old_pkb;
 440         struct package_PrimaryKerberosCtr3 *old_pkb3 = NULL;
 441         uint32_t i;
 442         enum ndr_err_code ndr_err;
 443
 444         ldb = ldb_module_get_ctx(io->ac->module);
 445
 446         /*
 447          * prepare generation of keys
 448          *
 449          * ENCTYPE_DES_CBC_MD5
 450          * ENCTYPE_DES_CBC_CRC
 451          */
 452         pkb->version            = 3;
 453         pkb3->salt.string       = io->g.salt;
 454         pkb3->num_keys          = 2;
 455         pkb3->keys              = talloc_array(io->ac,
 456                                                struct package_PrimaryKerberosKey3,
 457                                                pkb3->num_keys);
 458         if (!pkb3->keys) {
 459                 ldb_oom(ldb);
 460                 return LDB_ERR_OPERATIONS_ERROR;
 461         }
 462
 463         pkb3->keys[0].keytype   = ENCTYPE_DES_CBC_MD5;
 464         pkb3->keys[0].value     = &io->g.des_md5;
 465         pkb3->keys[1].keytype   = ENCTYPE_DES_CBC_CRC;
 466         pkb3->keys[1].value     = &io->g.des_crc;
 467
 468         /* initialize the old keys to zero */
 469         pkb3->num_old_keys      = 0;
 470         pkb3->old_keys          = NULL;
 471
 472         /* if there're no old keys, then we're done */
 473         if (!old_scb) {
 474                 return LDB_SUCCESS;
 475         }
 476
 477         for (i=0; i < old_scb->sub.num_packages; i++) {
 478                 if (strcmp("Primary:Kerberos", old_scb->sub.packages[i].name) != 0) {
 479                         continue;
 480                 }
 481
 482                 if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
 483                         continue;
 484                 }
 485
 486                 old_scp = &old_scb->sub.packages[i];
 487                 break;
 488         }
 489         /* Primary:Kerberos element of supplementalCredentials */
 490         if (old_scp) {
 491                 DATA_BLOB blob;
 492
 493                 blob = strhex_to_data_blob(io->ac, old_scp->data);
 494                 if (!blob.data) {
 495                         ldb_oom(ldb);
 496                         return LDB_ERR_OPERATIONS_ERROR;
 497                 }
 498
 499                 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
 500                 ndr_err = ndr_pull_struct_blob(&blob, io->ac, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")), &_old_pkb,
 501                                                (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
 502                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 503                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 504                         ldb_asprintf_errstring(ldb,
 505                                                "setup_primary_kerberos: "
 506                                                "failed to pull old package_PrimaryKerberosBlob: %s",
 507                                                nt_errstr(status));
 508                         return LDB_ERR_OPERATIONS_ERROR;
 509                 }
 510
 511                 if (_old_pkb.version != 3) {
 512                         ldb_asprintf_errstring(ldb,
 513                                                "setup_primary_kerberos: "
 514                                                "package_PrimaryKerberosBlob version[%u] expected[3]",
 515                                                _old_pkb.version);
 516                         return LDB_ERR_OPERATIONS_ERROR;
 517                 }
 518
 519                 old_pkb3 = &_old_pkb.ctr.ctr3;
 520         }
 521
 522         /* if we didn't found the old keys we're done */
 523         if (!old_pkb3) {
 524                 return LDB_SUCCESS;
 525         }
 526
 527         /* fill in the old keys */
 528         pkb3->num_old_keys      = old_pkb3->num_keys;
 529         pkb3->old_keys          = old_pkb3->keys;
 530
 531         return LDB_SUCCESS;
 532 }
 533
 534 static int setup_primary_kerberos_newer(struct setup_password_fields_io *io,
 535                                         const struct supplementalCredentialsBlob *old_scb,
 536                                         struct package_PrimaryKerberosBlob *pkb)
 537 {
 538         struct ldb_context *ldb;
 539         struct package_PrimaryKerberosCtr4 *pkb4 = &pkb->ctr.ctr4;
 540         struct supplementalCredentialsPackage *old_scp = NULL;
 541         struct package_PrimaryKerberosBlob _old_pkb;
 542         struct package_PrimaryKerberosCtr4 *old_pkb4 = NULL;
 543         uint32_t i;
 544         enum ndr_err_code ndr_err;
 545
 546         ldb = ldb_module_get_ctx(io->ac->module);
 547
 548         /*
 549          * prepare generation of keys
 550          *
 551          * ENCTYPE_AES256_CTS_HMAC_SHA1_96
 552          * ENCTYPE_AES128_CTS_HMAC_SHA1_96
 553          * ENCTYPE_DES_CBC_MD5
 554          * ENCTYPE_DES_CBC_CRC
 555          */
 556         pkb->version                    = 4;
 557         pkb4->salt.string               = io->g.salt;
 558         pkb4->default_iteration_count   = 4096;
 559         pkb4->num_keys                  = 4;
 560
 561         pkb4->keys = talloc_array(io->ac,
 562                                   struct package_PrimaryKerberosKey4,
 563                                   pkb4->num_keys);
 564         if (!pkb4->keys) {
 565                 ldb_oom(ldb);
 566                 return LDB_ERR_OPERATIONS_ERROR;
 567         }
 568
 569         pkb4->keys[0].iteration_count   = 4096;
 570         pkb4->keys[0].keytype           = ENCTYPE_AES256_CTS_HMAC_SHA1_96;
 571         pkb4->keys[0].value             = &io->g.aes_256;
 572         pkb4->keys[1].iteration_count   = 4096;
 573         pkb4->keys[1].keytype           = ENCTYPE_AES128_CTS_HMAC_SHA1_96;
 574         pkb4->keys[1].value             = &io->g.aes_128;
 575         pkb4->keys[2].iteration_count   = 4096;
 576         pkb4->keys[2].keytype           = ENCTYPE_DES_CBC_MD5;
 577         pkb4->keys[2].value             = &io->g.des_md5;
 578         pkb4->keys[3].iteration_count   = 4096;
 579         pkb4->keys[3].keytype           = ENCTYPE_DES_CBC_CRC;
 580         pkb4->keys[3].value             = &io->g.des_crc;
 581
 582         /* initialize the old keys to zero */
 583         pkb4->num_old_keys      = 0;
 584         pkb4->old_keys          = NULL;
 585         pkb4->num_older_keys    = 0;
 586         pkb4->older_keys        = NULL;
 587
 588         /* if there're no old keys, then we're done */
 589         if (!old_scb) {
 590                 return LDB_SUCCESS;
 591         }
 592
 593         for (i=0; i < old_scb->sub.num_packages; i++) {
 594                 if (strcmp("Primary:Kerberos-Newer-Keys", old_scb->sub.packages[i].name) != 0) {
 595                         continue;
 596                 }
 597
 598                 if (!old_scb->sub.packages[i].data || !old_scb->sub.packages[i].data[0]) {
 599                         continue;
 600                 }
 601
 602                 old_scp = &old_scb->sub.packages[i];
 603                 break;
 604         }
 605         /* Primary:Kerberos-Newer-Keys element of supplementalCredentials */
 606         if (old_scp) {
 607                 DATA_BLOB blob;
 608
 609                 blob = strhex_to_data_blob(io->ac, old_scp->data);
 610                 if (!blob.data) {
 611                         ldb_oom(ldb);
 612                         return LDB_ERR_OPERATIONS_ERROR;
 613                 }
 614
 615                 /* TODO: use ndr_pull_struct_blob_all(), when the ndr layer handles it correct with relative pointers */
 616                 ndr_err = ndr_pull_struct_blob(&blob, io->ac,
 617                                                lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
 618                                                &_old_pkb,
 619                                                (ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
 620                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 621                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
 622                         ldb_asprintf_errstring(ldb,
 623                                                "setup_primary_kerberos_newer: "
 624                                                "failed to pull old package_PrimaryKerberosBlob: %s",
 625                                                nt_errstr(status));
 626                         return LDB_ERR_OPERATIONS_ERROR;
 627                 }
 628
 629                 if (_old_pkb.version != 4) {
 630                         ldb_asprintf_errstring(ldb,
 631                                                "setup_primary_kerberos_newer: "
 632                                                "package_PrimaryKerberosBlob version[%u] expected[4]",
 633                                                _old_pkb.version);
 634                         return LDB_ERR_OPERATIONS_ERROR;
 635                 }
 636
 637                 old_pkb4 = &_old_pkb.ctr.ctr4;
 638         }
 639
 640         /* if we didn't found the old keys we're done */
 641         if (!old_pkb4) {
 642                 return LDB_SUCCESS;
 643         }
 644
 645         /* fill in the old keys */
 646         pkb4->num_old_keys      = old_pkb4->num_keys;
 647         pkb4->old_keys          = old_pkb4->keys;
 648         pkb4->num_older_keys    = old_pkb4->num_old_keys;
 649         pkb4->older_keys        = old_pkb4->old_keys;
 650
 651         return LDB_SUCCESS;
 652 }
 653
 654 static int setup_primary_wdigest(struct setup_password_fields_io *io,
 655                                  const struct supplementalCredentialsBlob *old_scb,
 656                                  struct package_PrimaryWDigestBlob *pdb)
 657 {
 658         struct ldb_context *ldb = ldb_module_get_ctx(io->ac->module);
 659         DATA_BLOB sAMAccountName;
 660         DATA_BLOB sAMAccountName_l;
 661         DATA_BLOB sAMAccountName_u;
 662         const char *user_principal_name = io->u.user_principal_name;
 663         DATA_BLOB userPrincipalName;
 664         DATA_BLOB userPrincipalName_l;
 665         DATA_BLOB userPrincipalName_u;
 666         DATA_BLOB netbios_domain;
 667         DATA_BLOB netbios_domain_l;
 668         DATA_BLOB netbios_domain_u;
 669         DATA_BLOB dns_domain;
 670         DATA_BLOB dns_domain_l;
 671         DATA_BLOB dns_domain_u;
 672         DATA_BLOB digest;
 673         DATA_BLOB delim;
 674         DATA_BLOB backslash;
 675         uint8_t i;
 676         struct {
 677                 DATA_BLOB *user;
 678                 DATA_BLOB *realm;
 679                 DATA_BLOB *nt4dom;
 680         } wdigest[] = {
 681         /*
 682          * See
 683          * http://technet2.microsoft.com/WindowsServer/en/library/717b450c-f4a0-4cc9-86f4-cc0633aae5f91033.mspx?mfr=true
 684          * for what precalculated hashes are supposed to be stored...
 685          *
 686          * I can't reproduce all values which should contain "Digest" as realm,
 687          * am I doing something wrong or is w2k3 just broken...?
 688          *
 689          * W2K3 fills in following for a user:
 690          *
 691          * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
 692          * sAMAccountName: NewUser2Sam
 693          * userPrincipalName: NewUser2Princ@sub1.w2k3.vmnet1.vm.base
 694          *
 695          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 696          * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
 697          * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
 698          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 699          * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
 700          * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
 701          * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
 702          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 703          * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 704          * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 705          * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 706          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 707          * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 708          * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 709          * 221c55284451ae9b3aacaa2a3c86f10f => NewUser2Princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 710          * 74e1be668853d4324d38c07e2acfb8ea => (w2k3 has a bug here!) newuser2princ@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 711          * e1e244ab7f098e3ae1761be7f9229bbb => NEWUSER2PRINC@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
 712          * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
 713          * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
 714          * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
 715          * 31dc704d3640335b2123d4ee28aa1f11 => ??? changes with NewUser2Sam => NewUser1Sam
 716          * 36349f5cecd07320fb3bb0e119230c43 => ??? changes with NewUser2Sam => NewUser1Sam
 717          * 12adf019d037fb535c01fd0608e78d9d => ??? changes with NewUser2Sam => NewUser1Sam
 718          * 6feecf8e724906f3ee1105819c5105a1 => ??? changes with NewUser2Princ => NewUser1Princ
 719          * 6c6911f3de6333422640221b9c51ff1f => ??? changes with NewUser2Princ => NewUser1Princ
 720          * 4b279877e742895f9348ac67a8de2f69 => ??? changes with NewUser2Princ => NewUser1Princ
 721          * db0c6bff069513e3ebb9870d29b57490 => ??? changes with NewUser2Sam => NewUser1Sam
 722          * 45072621e56b1c113a4e04a8ff68cd0e => ??? changes with NewUser2Sam => NewUser1Sam
 723          * 11d1220abc44a9c10cf91ef4a9c1de02 => ??? changes with NewUser2Sam => NewUser1Sam
 724          *
 725          * dn: CN=NewUser,OU=newtop,DC=sub1,DC=w2k3,DC=vmnet1,DC=vm,DC=base
 726          * sAMAccountName: NewUser2Sam
 727          *
 728          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 729          * b7ec9da91062199aee7d121e6710fe23 => newuser2sam:sub1:TestPwd2007
 730          * 17d290bc5c9f463fac54c37a8cea134d => NEWUSER2SAM:SUB1:TestPwd2007
 731          * 4279815024bda54fc074a5f8bd0a6e6f => NewUser2Sam:SUB1:TestPwd2007
 732          * 5d57e7823938348127322e08cd81bcb5 => NewUser2Sam:sub1:TestPwd2007
 733          * 07dd701bf8a011ece585de3d47237140 => NEWUSER2SAM:sub1:TestPwd2007
 734          * e14fb0eb401498d2cb33c9aae1cc7f37 => newuser2sam:SUB1:TestPwd2007
 735          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 736          * f52da1266a6bdd290ffd48b2c823dda7 => newuser2sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 737          * d2b42f171248cec37a3c5c6b55404062 => NEWUSER2SAM:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 738          * fff8d790ff6c152aaeb6ebe17b4021de => NewUser2Sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 739          * 8dadc90250f873d8b883f79d890bef82 => NewUser2Sam:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 740          * 2a7563c3715bc418d626dabef378c008 => NEWUSER2SAM:sub1.w2k3.vmnet1.vm.base:TestPwd2007
 741          * c8e9557a87cd4200fda0c11d2fa03f96 => newuser2sam:SUB1.W2K3.VMNET1.VM.BASE:TestPwd2007
 742          * 8a140d30b6f0a5912735dc1e3bc993b4 => NewUser2Sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 743          * 86d95b2faae6cae4ec261e7fbaccf093 => (here w2k3 is correct) newuser2sam@sub1.w2k3.vmnet1.vm.base::TestPwd2007
 744          * dfeff1493110220efcdfc6362e5f5450 => NEWUSER2SAM@SUB1.W2K3.VMNET1.VM.BASE::TestPwd2007
 745          * 86db637df42513039920e605499c3af6 => SUB1\NewUser2Sam::TestPwd2007
 746          * f5e43474dfaf067fee8197a253debaa2 => sub1\newuser2sam::TestPwd2007
 747          * 2ecaa8382e2518e4b77a52422b279467 => SUB1\NEWUSER2SAM::TestPwd2007
 748          * 31dc704d3640335b2123d4ee28aa1f11 => ???M1   changes with NewUser2Sam => NewUser1Sam
 749          * 36349f5cecd07320fb3bb0e119230c43 => ???M1.L changes with newuser2sam => newuser1sam
 750          * 12adf019d037fb535c01fd0608e78d9d => ???M1.U changes with NEWUSER2SAM => NEWUSER1SAM
 751          * 569b4533f2d9e580211dd040e5e360a8 => ???M2   changes with NewUser2Princ => NewUser1Princ
 752          * 52528bddf310a587c5d7e6a9ae2cbb20 => ???M2.L changes with newuser2princ => newuser1princ
 753          * 4f629a4f0361289ca4255ab0f658fcd5 => ???M3 changes with NewUser2Princ => NewUser1Princ (doesn't depend on case of userPrincipal )
 754          * db0c6bff069513e3ebb9870d29b57490 => ???M4 changes with NewUser2Sam => NewUser1Sam
 755          * 45072621e56b1c113a4e04a8ff68cd0e => ???M5 changes with NewUser2Sam => NewUser1Sam (doesn't depend on case of sAMAccountName)
 756          * 11d1220abc44a9c10cf91ef4a9c1de02 => ???M4.U changes with NEWUSER2SAM => NEWUSER1SAM
 757          */
 758
 759         /*
 760          * sAMAccountName, netbios_domain
 761          */
 762                 {
 763                 .user   = &sAMAccountName,
 764                 .realm  = &netbios_domain,
 765                 },
 766                 {
 767                 .user   = &sAMAccountName_l,
 768                 .realm  = &netbios_domain_l,
 769                 },
 770                 {
 771                 .user   = &sAMAccountName_u,
 772                 .realm  = &netbios_domain_u,
 773                 },
 774                 {
 775                 .user   = &sAMAccountName,
 776                 .realm  = &netbios_domain_u,
 777                 },
 778                 {
 779                 .user   = &sAMAccountName,
 780                 .realm  = &netbios_domain_l,
 781                 },
 782                 {
 783                 .user   = &sAMAccountName_u,
 784                 .realm  = &netbios_domain_l,
 785                 },
 786                 {
 787                 .user   = &sAMAccountName_l,
 788                 .realm  = &netbios_domain_u,
 789                 },
 790         /*
 791          * sAMAccountName, dns_domain
 792          */
 793                 {
 794                 .user   = &sAMAccountName,
 795                 .realm  = &dns_domain,
 796                 },
 797                 {
 798                 .user   = &sAMAccountName_l,
 799                 .realm  = &dns_domain_l,
 800                 },
 801                 {
 802                 .user   = &sAMAccountName_u,
 803                 .realm  = &dns_domain_u,
 804                 },
 805                 {
 806                 .user   = &sAMAccountName,
 807                 .realm  = &dns_domain_u,
 808                 },
 809                 {
 810                 .user   = &sAMAccountName,
 811                 .realm  = &dns_domain_l,
 812                 },
 813                 {
 814                 .user   = &sAMAccountName_u,
 815                 .realm  = &dns_domain_l,
 816                 },
 817                 {
 818                 .user   = &sAMAccountName_l,
 819                 .realm  = &dns_domain_u,
 820                 },
 821         /*
 822          * userPrincipalName, no realm
 823          */
 824                 {
 825                 .user   = &userPrincipalName,
 826                 },
 827                 {
 828                 /*
 829                  * NOTE: w2k3 messes this up, if the user has a real userPrincipalName,
 830                  *       the fallback to the sAMAccountName based userPrincipalName is correct
 831                  */
 832                 .user   = &userPrincipalName_l,
 833                 },
 834                 {
 835                 .user   = &userPrincipalName_u,
 836                 },
 837         /*
 838          * nt4dom\sAMAccountName, no realm
 839          */
 840                 {
 841                 .user   = &sAMAccountName,
 842                 .nt4dom = &netbios_domain
 843                 },
 844                 {
 845                 .user   = &sAMAccountName_l,
 846                 .nt4dom = &netbios_domain_l
 847                 },
 848                 {
 849                 .user   = &sAMAccountName_u,
 850                 .nt4dom = &netbios_domain_u
 851                 },
 852
 853         /*
 854          * the following ones are guessed depending on the technet2 article
 855          * but not reproducable on a w2k3 server
 856          */
 857         /* sAMAccountName with "Digest" realm */
 858                 {
 859                 .user   = &sAMAccountName,
 860                 .realm  = &digest
 861                 },
 862                 {
 863                 .user   = &sAMAccountName_l,
 864                 .realm  = &digest
 865                 },
 866                 {
 867                 .user   = &sAMAccountName_u,
 868                 .realm  = &digest
 869                 },
 870         /* userPrincipalName with "Digest" realm */
 871                 {
 872                 .user   = &userPrincipalName,
 873                 .realm  = &digest
 874                 },
 875                 {
 876                 .user   = &userPrincipalName_l,
 877                 .realm  = &digest
 878                 },
 879                 {
 880                 .user   = &userPrincipalName_u,
 881                 .realm  = &digest
 882                 },
 883         /* nt4dom\\sAMAccountName with "Digest" realm */
 884                 {
 885                 .user   = &sAMAccountName,
 886                 .nt4dom = &netbios_domain,
 887                 .realm  = &digest
 888                 },
 889                 {
 890                 .user   = &sAMAccountName_l,
 891                 .nt4dom = &netbios_domain_l,
 892                 .realm  = &digest
 893                 },
 894                 {
 895                 .user   = &sAMAccountName_u,
 896                 .nt4dom = &netbios_domain_u,
 897                 .realm  = &digest
 898                 },
 899         };
 900
 901         /* prepare DATA_BLOB's used in the combinations array */
 902         sAMAccountName          = data_blob_string_const(io->u.sAMAccountName);
 903         sAMAccountName_l        = data_blob_string_const(strlower_talloc(io->ac, io->u.sAMAccountName));
 904         if (!sAMAccountName_l.data) {
 905                 ldb_oom(ldb);
 906                 return LDB_ERR_OPERATIONS_ERROR;
 907         }
 908         sAMAccountName_u        = data_blob_string_const(strupper_talloc(io->ac, io->u.sAMAccountName));
 909         if (!sAMAccountName_u.data) {
 910                 ldb_oom(ldb);
 911                 return LDB_ERR_OPERATIONS_ERROR;
 912         }
 913
 914         /* if the user doesn't have a userPrincipalName, create one (with lower case realm) */
 915         if (!user_principal_name) {
 916                 user_principal_name = talloc_asprintf(io->ac, "%s@%s",
 917                                                       io->u.sAMAccountName,
 918                                                       io->domain->dns_domain);
 919                 if (!user_principal_name) {
 920                         ldb_oom(ldb);
 921                         return LDB_ERR_OPERATIONS_ERROR;
 922                 }
 923         }
 924         userPrincipalName       = data_blob_string_const(user_principal_name);
 925         userPrincipalName_l     = data_blob_string_const(strlower_talloc(io->ac, user_principal_name));
 926         if (!userPrincipalName_l.data) {
 927                 ldb_oom(ldb);
 928                 return LDB_ERR_OPERATIONS_ERROR;
 929         }
 930         userPrincipalName_u     = data_blob_string_const(strupper_talloc(io->ac, user_principal_name));
 931         if (!userPrincipalName_u.data) {
 932                 ldb_oom(ldb);
 933                 return LDB_ERR_OPERATIONS_ERROR;
 934         }
 935
 936         netbios_domain          = data_blob_string_const(io->domain->netbios_domain);
 937         netbios_domain_l        = data_blob_string_const(strlower_talloc(io->ac, io->domain->netbios_domain));
 938         if (!netbios_domain_l.data) {
 939                 ldb_oom(ldb);
 940                 return LDB_ERR_OPERATIONS_ERROR;
 941         }
 942         netbios_domain_u        = data_blob_string_const(strupper_talloc(io->ac, io->domain->netbios_domain));
 943         if (!netbios_domain_u.data) {
 944                 ldb_oom(ldb);
 945                 return LDB_ERR_OPERATIONS_ERROR;
 946         }
 947
 948         dns_domain              = data_blob_string_const(io->domain->dns_domain);
 949         dns_domain_l            = data_blob_string_const(io->domain->dns_domain);
 950         dns_domain_u            = data_blob_string_const(io->domain->realm);
 951
 952         digest                  = data_blob_string_const("Digest");
 953
 954         delim                   = data_blob_string_const(":");
 955         backslash               = data_blob_string_const("\\");
 956
 957         pdb->num_hashes = ARRAY_SIZE(wdigest);
 958         pdb->hashes     = talloc_array(io->ac, struct package_PrimaryWDigestHash, pdb->num_hashes);
 959         if (!pdb->hashes) {
 960                 ldb_oom(ldb);
 961                 return LDB_ERR_OPERATIONS_ERROR;
 962         }
 963
 964         for (i=0; i < ARRAY_SIZE(wdigest); i++) {
 965                 struct MD5Context md5;
 966                 MD5Init(&md5);
 967                 if (wdigest[i].nt4dom) {
 968                         MD5Update(&md5, wdigest[i].nt4dom->data, wdigest[i].nt4dom->length);
 969                         MD5Update(&md5, backslash.data, backslash.length);
 970                 }
 971                 MD5Update(&md5, wdigest[i].user->data, wdigest[i].user->length);
 972                 MD5Update(&md5, delim.data, delim.length);
 973                 if (wdigest[i].realm) {
 974                         MD5Update(&md5, wdigest[i].realm->data, wdigest[i].realm->length);
 975                 }
 976                 MD5Update(&md5, delim.data, delim.length);
 977                 MD5Update(&md5, io->n.cleartext_utf8->data, io->n.cleartext_utf8->length);
 978                 MD5Final(pdb->hashes[i].hash, &md5);
 979         }
 980
 981         return LDB_SUCCESS;
 982 }
 983
 984 static int setup_supplemental_field(struct setup_password_fields_io *io)
 985 {
 986         struct ldb_context *ldb;
 987         struct supplementalCredentialsBlob scb;
 988         struct supplementalCredentialsBlob _old_scb;
 989         struct supplementalCredentialsBlob *old_scb = NULL;
 990         /* Packages + (Kerberos-Newer-Keys, Kerberos, WDigest and CLEARTEXT) */
 991         uint32_t num_names = 0;
 992         const char *names[1+4];
 993         uint32_t num_packages = 0;
 994         struct supplementalCredentialsPackage packages[1+4];
 995         /* Packages */
 996         struct supplementalCredentialsPackage *pp = NULL;
 997         struct package_PackagesBlob pb;
 998         DATA_BLOB pb_blob;
 999         char *pb_hexstr;
1000         /* Primary:Kerberos-Newer-Keys */
1001         const char **nkn = NULL;
1002         struct supplementalCredentialsPackage *pkn = NULL;
1003         struct package_PrimaryKerberosBlob pknb;
1004         DATA_BLOB pknb_blob;
1005         char *pknb_hexstr;
1006         /* Primary:Kerberos */
1007         const char **nk = NULL;
1008         struct supplementalCredentialsPackage *pk = NULL;
1009         struct package_PrimaryKerberosBlob pkb;
1010         DATA_BLOB pkb_blob;
1011         char *pkb_hexstr;
1012         /* Primary:WDigest */
1013         const char **nd = NULL;
1014         struct supplementalCredentialsPackage *pd = NULL;
1015         struct package_PrimaryWDigestBlob pdb;
1016         DATA_BLOB pdb_blob;
1017         char *pdb_hexstr;
1018         /* Primary:CLEARTEXT */
1019         const char **nc = NULL;
1020         struct supplementalCredentialsPackage *pc = NULL;
1021         struct package_PrimaryCLEARTEXTBlob pcb;
1022         DATA_BLOB pcb_blob;
1023         char *pcb_hexstr;
1024         int ret;
1025         enum ndr_err_code ndr_err;
1026         uint8_t zero16[16];
1027         bool do_newer_keys = false;
1028         bool do_cleartext = false;
1029
1030         ZERO_STRUCT(zero16);
1031         ZERO_STRUCT(names);
1032
1033         ldb = ldb_module_get_ctx(io->ac->module);
1034
1035         if (!io->n.cleartext_utf8) {
1036                 /*
1037                  * when we don't have a cleartext password
1038                  * we can't setup a supplementalCredential value
1039                  */
1040                 return LDB_SUCCESS;
1041         }
1042
1043         /* if there's an old supplementaCredentials blob then parse it */
1044         if (io->o.supplemental) {
1045                 ndr_err = ndr_pull_struct_blob_all(io->o.supplemental, io->ac,
1046                                                    lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1047                                                    &_old_scb,
1048                                                    (ndr_pull_flags_fn_t)ndr_pull_supplementalCredentialsBlob);
1049                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1050                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1051                         ldb_asprintf_errstring(ldb,
1052                                                "setup_supplemental_field: "
1053                                                "failed to pull old supplementalCredentialsBlob: %s",
1054                                                nt_errstr(status));
1055                         return LDB_ERR_OPERATIONS_ERROR;
1056                 }
1057
1058                 if (_old_scb.sub.signature == SUPPLEMENTAL_CREDENTIALS_SIGNATURE) {
1059                         old_scb = &_old_scb;
1060                 } else {
1061                         ldb_debug(ldb, LDB_DEBUG_ERROR,
1062                                                "setup_supplemental_field: "
1063                                                "supplementalCredentialsBlob signature[0x%04X] expected[0x%04X]",
1064                                                _old_scb.sub.signature, SUPPLEMENTAL_CREDENTIALS_SIGNATURE);
1065                 }
1066         }
1067
1068         /* TODO: do the correct check for this, it maybe depends on the functional level? */
1069         do_newer_keys = lp_parm_bool(ldb_get_opaque(ldb, "loadparm"),
1070                                      NULL, "password_hash", "create_aes_key", false);
1071
1072         if (io->domain->store_cleartext &&
1073             (io->u.user_account_control & UF_ENCRYPTED_TEXT_PASSWORD_ALLOWED)) {
1074                 do_cleartext = true;
1075         }
1076
1077         /*
1078          * The ordering is this
1079          *
1080          * Primary:Kerberos-Newer-Keys (optional)
1081          * Primary:Kerberos
1082          * Primary:WDigest
1083          * Primary:CLEARTEXT (optional)
1084          *
1085          * And the 'Packages' package is insert before the last
1086          * other package.
1087          */
1088         if (do_newer_keys) {
1089                 /* Primary:Kerberos-Newer-Keys */
1090                 nkn = &names[num_names++];
1091                 pkn = &packages[num_packages++];
1092         }
1093
1094         /* Primary:Kerberos */
1095         nk = &names[num_names++];
1096         pk = &packages[num_packages++];
1097
1098         if (!do_cleartext) {
1099                 /* Packages */
1100                 pp = &packages[num_packages++];
1101         }
1102
1103         /* Primary:WDigest */
1104         nd = &names[num_names++];
1105         pd = &packages[num_packages++];
1106
1107         if (do_cleartext) {
1108                 /* Packages */
1109                 pp = &packages[num_packages++];
1110
1111                 /* Primary:CLEARTEXT */
1112                 nc = &names[num_names++];
1113                 pc = &packages[num_packages++];
1114         }
1115
1116         if (pkn) {
1117                 /*
1118                  * setup 'Primary:Kerberos-Newer-Keys' element
1119                  */
1120                 *nkn = "Kerberos-Newer-Keys";
1121
1122                 ret = setup_primary_kerberos_newer(io, old_scb, &pknb);
1123                 if (ret != LDB_SUCCESS) {
1124                         return ret;
1125                 }
1126
1127                 ndr_err = ndr_push_struct_blob(&pknb_blob, io->ac,
1128                                                lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1129                                                &pknb,
1130                                                (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
1131                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1132                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1133                         ldb_asprintf_errstring(ldb,
1134                                                "setup_supplemental_field: "
1135                                                "failed to push package_PrimaryKerberosNeverBlob: %s",
1136                                                nt_errstr(status));
1137                         return LDB_ERR_OPERATIONS_ERROR;
1138                 }
1139                 pknb_hexstr = data_blob_hex_string(io->ac, &pknb_blob);
1140                 if (!pknb_hexstr) {
1141                         ldb_oom(ldb);
1142                         return LDB_ERR_OPERATIONS_ERROR;
1143                 }
1144                 pkn->name       = "Primary:Kerberos-Newer-Keys";
1145                 pkn->reserved   = 1;
1146                 pkn->data       = pknb_hexstr;
1147         }
1148
1149         /*
1150          * setup 'Primary:Kerberos' element
1151          */
1152         *nk = "Kerberos";
1153
1154         ret = setup_primary_kerberos(io, old_scb, &pkb);
1155         if (ret != LDB_SUCCESS) {
1156                 return ret;
1157         }
1158
1159         ndr_err = ndr_push_struct_blob(&pkb_blob, io->ac,
1160                                        lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1161                                        &pkb,
1162                                        (ndr_push_flags_fn_t)ndr_push_package_PrimaryKerberosBlob);
1163         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1164                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1165                 ldb_asprintf_errstring(ldb,
1166                                        "setup_supplemental_field: "
1167                                        "failed to push package_PrimaryKerberosBlob: %s",
1168                                        nt_errstr(status));
1169                 return LDB_ERR_OPERATIONS_ERROR;
1170         }
1171         pkb_hexstr = data_blob_hex_string(io->ac, &pkb_blob);
1172         if (!pkb_hexstr) {
1173                 ldb_oom(ldb);
1174                 return LDB_ERR_OPERATIONS_ERROR;
1175         }
1176         pk->name        = "Primary:Kerberos";
1177         pk->reserved    = 1;
1178         pk->data        = pkb_hexstr;
1179
1180         /*
1181          * setup 'Primary:WDigest' element
1182          */
1183         *nd = "WDigest";
1184
1185         ret = setup_primary_wdigest(io, old_scb, &pdb);
1186         if (ret != LDB_SUCCESS) {
1187                 return ret;
1188         }
1189
1190         ndr_err = ndr_push_struct_blob(&pdb_blob, io->ac,
1191                                        lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1192                                        &pdb,
1193                                        (ndr_push_flags_fn_t)ndr_push_package_PrimaryWDigestBlob);
1194         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1195                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1196                 ldb_asprintf_errstring(ldb,
1197                                        "setup_supplemental_field: "
1198                                        "failed to push package_PrimaryWDigestBlob: %s",
1199                                        nt_errstr(status));
1200                 return LDB_ERR_OPERATIONS_ERROR;
1201         }
1202         pdb_hexstr = data_blob_hex_string(io->ac, &pdb_blob);
1203         if (!pdb_hexstr) {
1204                 ldb_oom(ldb);
1205                 return LDB_ERR_OPERATIONS_ERROR;
1206         }
1207         pd->name        = "Primary:WDigest";
1208         pd->reserved    = 1;
1209         pd->data        = pdb_hexstr;
1210
1211         /*
1212          * setup 'Primary:CLEARTEXT' element
1213          */
1214         if (pc) {
1215                 *nc             = "CLEARTEXT";
1216
1217                 pcb.cleartext   = *io->n.cleartext_utf16;
1218
1219                 ndr_err = ndr_push_struct_blob(&pcb_blob, io->ac,
1220                                                lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1221                                                &pcb,
1222                                                (ndr_push_flags_fn_t)ndr_push_package_PrimaryCLEARTEXTBlob);
1223                 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1224                         NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1225                         ldb_asprintf_errstring(ldb,
1226                                                "setup_supplemental_field: "
1227                                                "failed to push package_PrimaryCLEARTEXTBlob: %s",
1228                                                nt_errstr(status));
1229                         return LDB_ERR_OPERATIONS_ERROR;
1230                 }
1231                 pcb_hexstr = data_blob_hex_string(io->ac, &pcb_blob);
1232                 if (!pcb_hexstr) {
1233                         ldb_oom(ldb);
1234                         return LDB_ERR_OPERATIONS_ERROR;
1235                 }
1236                 pc->name        = "Primary:CLEARTEXT";
1237                 pc->reserved    = 1;
1238                 pc->data        = pcb_hexstr;
1239         }
1240
1241         /*
1242          * setup 'Packages' element
1243          */
1244         pb.names = names;
1245         ndr_err = ndr_push_struct_blob(&pb_blob, io->ac,
1246                                        lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1247                                        &pb,
1248                                        (ndr_push_flags_fn_t)ndr_push_package_PackagesBlob);
1249         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1250                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1251                 ldb_asprintf_errstring(ldb,
1252                                        "setup_supplemental_field: "
1253                                        "failed to push package_PackagesBlob: %s",
1254                                        nt_errstr(status));
1255                 return LDB_ERR_OPERATIONS_ERROR;
1256         }
1257         pb_hexstr = data_blob_hex_string(io->ac, &pb_blob);
1258         if (!pb_hexstr) {
1259                 ldb_oom(ldb);
1260                 return LDB_ERR_OPERATIONS_ERROR;
1261         }
1262         pp->name        = "Packages";
1263         pp->reserved    = 2;
1264         pp->data        = pb_hexstr;
1265
1266         /*
1267          * setup 'supplementalCredentials' value
1268          */
1269         ZERO_STRUCT(scb);
1270         scb.sub.num_packages    = num_packages;
1271         scb.sub.packages        = packages;
1272
1273         ndr_err = ndr_push_struct_blob(&io->g.supplemental, io->ac,
1274                                        lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1275                                        &scb,
1276                                        (ndr_push_flags_fn_t)ndr_push_supplementalCredentialsBlob);
1277         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
1278                 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
1279                 ldb_asprintf_errstring(ldb,
1280                                        "setup_supplemental_field: "
1281                                        "failed to push supplementalCredentialsBlob: %s",
1282                                        nt_errstr(status));
1283                 return LDB_ERR_OPERATIONS_ERROR;
1284         }
1285
1286         return LDB_SUCCESS;
1287 }
1288
1289 static int setup_last_set_field(struct setup_password_fields_io *io)
1290 {
1291         /* set it as now */
1292         unix_to_nt_time(&io->g.last_set, time(NULL));
1293
1294         return LDB_SUCCESS;
1295 }
1296
1297 static int setup_kvno_field(struct setup_password_fields_io *io)
1298 {
1299         /* increment by one */
1300         io->g.kvno = io->o.kvno + 1;
1301
1302         return LDB_SUCCESS;
1303 }
1304
1305 static int setup_password_fields(struct setup_password_fields_io *io)
1306 {
1307         struct ldb_context *ldb;
1308         bool ok;
1309         int ret;
1310         size_t converted_pw_len;
1311
1312         ldb = ldb_module_get_ctx(io->ac->module);
1313
1314         /*
1315          * refuse the change if someone want to change the cleartext
1316          * and supply his own hashes at the same time...
1317          */
1318         if ((io->n.cleartext_utf8 || io->n.cleartext_utf16) && (io->n.nt_hash || io->n.lm_hash)) {
1319                 ldb_asprintf_errstring(ldb,
1320                                        "setup_password_fields: "
1321                                        "it's only allowed to set the cleartext password or the password hashes");
1322                 return LDB_ERR_UNWILLING_TO_PERFORM;
1323         }
1324
1325         if (io->n.cleartext_utf8 && io->n.cleartext_utf16) {
1326                 ldb_asprintf_errstring(ldb,
1327                                        "setup_password_fields: "
1328                                        "it's only allowed to set the cleartext password as userPassword or clearTextPasssword, not both at once");
1329                 return LDB_ERR_UNWILLING_TO_PERFORM;
1330         }
1331
1332         if (io->n.cleartext_utf8) {
1333                 char **cleartext_utf16_str;
1334                 struct ldb_val *cleartext_utf16_blob;
1335                 io->n.cleartext_utf16 = cleartext_utf16_blob = talloc(io->ac, struct ldb_val);
1336                 if (!io->n.cleartext_utf16) {
1337                         ldb_oom(ldb);
1338                         return LDB_ERR_OPERATIONS_ERROR;
1339                 }
1340                 if (!convert_string_talloc_convenience(io->ac, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1341                                                          CH_UTF8, CH_UTF16, io->n.cleartext_utf8->data, io->n.cleartext_utf8->length,
1342                                                          (void **)&cleartext_utf16_str, &converted_pw_len, false)) {
1343                         ldb_asprintf_errstring(ldb,
1344                                                "setup_password_fields: "
1345                                                "failed to generate UTF16 password from cleartext UTF8 password");
1346                         return LDB_ERR_OPERATIONS_ERROR;
1347                 }
1348                 *cleartext_utf16_blob = data_blob_const(cleartext_utf16_str, converted_pw_len);
1349         } else if (io->n.cleartext_utf16) {
1350                 char *cleartext_utf8_str;
1351                 struct ldb_val *cleartext_utf8_blob;
1352                 io->n.cleartext_utf8 = cleartext_utf8_blob = talloc(io->ac, struct ldb_val);
1353                 if (!io->n.cleartext_utf8) {
1354                         ldb_oom(ldb);
1355                         return LDB_ERR_OPERATIONS_ERROR;
1356                 }
1357                 if (!convert_string_talloc_convenience(io->ac, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1358                                                          CH_UTF16MUNGED, CH_UTF8, io->n.cleartext_utf16->data, io->n.cleartext_utf16->length,
1359                                                          (void **)&cleartext_utf8_str, &converted_pw_len, false)) {
1360                         /* We can't bail out entirely, as these unconvertable passwords are frustratingly valid */
1361                         io->n.cleartext_utf8 = NULL;
1362                         talloc_free(cleartext_utf8_blob);
1363                 }
1364                 *cleartext_utf8_blob = data_blob_const(cleartext_utf8_str, converted_pw_len);
1365         }
1366         if (io->n.cleartext_utf16) {
1367                 struct samr_Password *nt_hash;
1368                 nt_hash = talloc(io->ac, struct samr_Password);
1369                 if (!nt_hash) {
1370                         ldb_oom(ldb);
1371                         return LDB_ERR_OPERATIONS_ERROR;
1372                 }
1373                 io->n.nt_hash = nt_hash;
1374
1375                 /* compute the new nt hash */
1376                 mdfour(nt_hash->hash, io->n.cleartext_utf16->data, io->n.cleartext_utf16->length);
1377         }
1378
1379         if (io->n.cleartext_utf8) {
1380                 struct samr_Password *lm_hash;
1381                 char *cleartext_unix;
1382                 if (lp_lanman_auth(ldb_get_opaque(ldb, "loadparm")) &&
1383                     convert_string_talloc_convenience(io->ac, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")),
1384                                                          CH_UTF8, CH_UNIX, io->n.cleartext_utf8->data, io->n.cleartext_utf8->length,
1385                                                          (void **)&cleartext_unix, &converted_pw_len, false)) {
1386                         lm_hash = talloc(io->ac, struct samr_Password);
1387                         if (!lm_hash) {
1388                                 ldb_oom(ldb);
1389                                 return LDB_ERR_OPERATIONS_ERROR;
1390                         }
1391
1392                         /* compute the new lm hash.   */
1393                         ok = E_deshash((char *)cleartext_unix, lm_hash->hash);
1394                         if (ok) {
1395                                 io->n.lm_hash = lm_hash;
1396                         } else {
1397                                 talloc_free(lm_hash->hash);
1398                         }
1399                 }
1400
1401                 ret = setup_kerberos_keys(io);
1402                 if (ret != 0) {
1403                         return ret;
1404                 }
1405         }
1406
1407         ret = setup_nt_fields(io);
1408         if (ret != 0) {
1409                 return ret;
1410         }
1411
1412         ret = setup_lm_fields(io);
1413         if (ret != 0) {
1414                 return ret;
1415         }
1416
1417         ret = setup_supplemental_field(io);
1418         if (ret != 0) {
1419                 return ret;
1420         }
1421
1422         ret = setup_last_set_field(io);
1423         if (ret != 0) {
1424                 return ret;
1425         }
1426
1427         ret = setup_kvno_field(io);
1428         if (ret != 0) {
1429                 return ret;
1430         }
1431
1432         return LDB_SUCCESS;
1433 }
1434
1435 static int setup_io(struct ph_context *ac,
1436                     const struct ldb_message *new_msg,
1437                     const struct ldb_message *searched_msg,
1438                     struct setup_password_fields_io *io)
1439 {
1440         const struct ldb_val *quoted_utf16;
1441         struct ldb_context *ldb = ldb_module_get_ctx(ac->module);
1442
1443         ZERO_STRUCTP(io);
1444
1445         /* Some operations below require kerberos contexts */
1446         if (smb_krb5_init_context(ac,
1447                                   ldb_get_event_context(ldb),
1448                                   (struct loadparm_context *)ldb_get_opaque(ldb, "loadparm"),
1449                                   &io->smb_krb5_context) != 0) {
1450                 return LDB_ERR_OPERATIONS_ERROR;
1451         }
1452
1453         io->ac                          = ac;
1454         io->domain                      = ac->domain;
1455
1456         io->u.user_account_control      = samdb_result_uint(searched_msg, "userAccountControl", 0);
1457         io->u.sAMAccountName            = samdb_result_string(searched_msg, "samAccountName", NULL);
1458         io->u.user_principal_name       = samdb_result_string(searched_msg, "userPrincipalName", NULL);
1459         io->u.is_computer               = ldb_msg_check_string_attribute(searched_msg, "objectClass", "computer");
1460
1461         io->n.cleartext_utf8            = ldb_msg_find_ldb_val(new_msg, "userPassword");
1462         io->n.cleartext_utf16           = ldb_msg_find_ldb_val(new_msg, "clearTextPassword");
1463
1464         /* this rather strange looking piece of code is there to
1465            handle a ldap client setting a password remotely using the
1466            unicodePwd ldap field. The syntax is that the password is
1467            in UTF-16LE, with a " at either end. Unfortunately the
1468            unicodePwd field is also used to store the nt hashes
1469            internally in Samba, and is used in the nt hash format on
1470            the wire in DRS replication, so we have a single name for
1471            two distinct values. The code below leaves us with a small
1472            chance (less than 1 in 2^32) of a mixup, if someone manages
1473            to create a MD4 hash which starts and ends in 0x22 0x00, as
1474            that would then be treated as a UTF16 password rather than
1475            a nthash */
1476         quoted_utf16                    = ldb_msg_find_ldb_val(new_msg, "unicodePwd");
1477         if (quoted_utf16 &&
1478             quoted_utf16->length >= 4 &&
1479             quoted_utf16->data[0] == '"' &&
1480             quoted_utf16->data[1] == 0 &&
1481             quoted_utf16->data[quoted_utf16->length-2] == '"' &&
1482             quoted_utf16->data[quoted_utf16->length-1] == 0) {
1483                 io->n.quoted_utf16.data = talloc_memdup(io->ac, quoted_utf16->data+2, quoted_utf16->length-4);
1484                 io->n.quoted_utf16.length = quoted_utf16->length-4;
1485                 io->n.cleartext_utf16 = &io->n.quoted_utf16;
1486                 io->n.nt_hash = NULL;
1487         } else {
1488                 io->n.nt_hash           = samdb_result_hash(io->ac, new_msg, "unicodePwd");
1489         }
1490
1491         io->n.lm_hash                   = samdb_result_hash(io->ac, new_msg, "dBCSPwd");
1492
1493         return LDB_SUCCESS;
1494 }
1495
1496 static struct ph_context *ph_init_context(struct ldb_module *module,
1497                                           struct ldb_request *req)
1498 {
1499         struct ldb_context *ldb;
1500         struct ph_context *ac;
1501
1502         ldb = ldb_module_get_ctx(module);
1503
1504         ac = talloc_zero(req, struct ph_context);
1505         if (ac == NULL) {
1506                 ldb_set_errstring(ldb, "Out of Memory");
1507                 return NULL;
1508         }
1509
1510         ac->module = module;
1511         ac->req = req;
1512
1513         return ac;
1514 }
1515
1516 static int ph_op_callback(struct ldb_request *req, struct ldb_reply *ares)
1517 {
1518         struct ph_context *ac;
1519
1520         ac = talloc_get_type(req->context, struct ph_context);
1521
1522         if (!ares) {
1523                 return ldb_module_done(ac->req, NULL, NULL,
1524                                         LDB_ERR_OPERATIONS_ERROR);
1525         }
1526         if (ares->error != LDB_SUCCESS) {
1527                 return ldb_module_done(ac->req, ares->controls,
1528                                         ares->response, ares->error);
1529         }
1530
1531         if (ares->type != LDB_REPLY_DONE) {
1532                 talloc_free(ares);
1533                 return ldb_module_done(ac->req, NULL, NULL,
1534                                         LDB_ERR_OPERATIONS_ERROR);
1535         }
1536
1537         return ldb_module_done(ac->req, ares->controls,
1538                                 ares->response, ares->error);
1539 }
1540
1541 static int password_hash_add_do_add(struct ph_context *ac);
1542 static int ph_modify_callback(struct ldb_request *req, struct ldb_reply *ares);
1543 static int password_hash_mod_search_self(struct ph_context *ac);
1544 static int ph_mod_search_callback(struct ldb_request *req, struct ldb_reply *ares);
1545 static int password_hash_mod_do_mod(struct ph_context *ac);
1546
1547 static int get_domain_data_callback(struct ldb_request *req,
1548                                     struct ldb_reply *ares)
1549 {
1550         struct ldb_context *ldb;
1551         struct domain_data *data;
1552         struct ph_context *ac;
1553         int ret;
1554         char *tmp;
1555         char *p;
1556
1557         ac = talloc_get_type(req->context, struct ph_context);
1558         ldb = ldb_module_get_ctx(ac->module);
1559
1560         if (!ares) {
1561                 return ldb_module_done(ac->req, NULL, NULL,
1562                                         LDB_ERR_OPERATIONS_ERROR);
1563         }
1564         if (ares->error != LDB_SUCCESS) {
1565                 return ldb_module_done(ac->req, ares->controls,
1566                                         ares->response, ares->error);
1567         }
1568
1569         switch (ares->type) {
1570         case LDB_REPLY_ENTRY:
1571                 if (ac->domain != NULL) {
1572                         ldb_set_errstring(ldb, "Too many results");
1573                         return ldb_module_done(ac->req, NULL, NULL,
1574                                                 LDB_ERR_OPERATIONS_ERROR);
1575                 }
1576
1577                 data = talloc_zero(ac, struct domain_data);
1578                 if (data == NULL) {
1579                         return ldb_module_done(ac->req, NULL, NULL,
1580                                                 LDB_ERR_OPERATIONS_ERROR);
1581                 }
1582
1583                 data->pwdProperties = samdb_result_uint(ares->message, "pwdProperties", 0);
1584                 data->store_cleartext = data->pwdProperties & DOMAIN_PASSWORD_STORE_CLEARTEXT;
1585                 data->pwdHistoryLength = samdb_result_uint(ares->message, "pwdHistoryLength", 0);
1586
1587                 /* For a domain DN, this puts things in dotted notation */
1588                 /* For builtin domains, this will give details for the host,
1589                  * but that doesn't really matter, as it's just used for salt
1590                  * and kerberos principals, which don't exist here */
1591
1592                 tmp = ldb_dn_canonical_string(data, ares->message->dn);
1593                 if (!tmp) {
1594                         return ldb_module_done(ac->req, NULL, NULL,
1595                                                 LDB_ERR_OPERATIONS_ERROR);
1596                 }
1597
1598                 /* But it puts a trailing (or just before 'builtin') / on things, so kill that */
1599                 p = strchr(tmp, '/');
1600                 if (p) {
1601                         p[0] = '\0';
1602                 }
1603
1604                 data->dns_domain = strlower_talloc(data, tmp);
1605                 if (data->dns_domain == NULL) {
1606                         ldb_oom(ldb);
1607                         return ldb_module_done(ac->req, NULL, NULL,
1608                                                 LDB_ERR_OPERATIONS_ERROR);
1609                 }
1610                 data->realm = strupper_talloc(data, tmp);
1611                 if (data->realm == NULL) {
1612                         ldb_oom(ldb);
1613                         return ldb_module_done(ac->req, NULL, NULL,
1614                                                 LDB_ERR_OPERATIONS_ERROR);
1615                 }
1616                 /* FIXME: NetbIOS name is *always* the first domain component ?? -SSS */
1617                 p = strchr(tmp, '.');
1618                 if (p) {
1619                         p[0] = '\0';
1620                 }
1621                 data->netbios_domain = strupper_talloc(data, tmp);
1622                 if (data->netbios_domain == NULL) {
1623                         ldb_oom(ldb);
1624                         return ldb_module_done(ac->req, NULL, NULL,
1625                                                 LDB_ERR_OPERATIONS_ERROR);
1626                 }
1627
1628                 talloc_free(tmp);
1629                 ac->domain = data;
1630                 break;
1631
1632         case LDB_REPLY_DONE:
1633
1634                 /* call the next step */
1635                 switch (ac->req->operation) {
1636                 case LDB_ADD:
1637                         ret = password_hash_add_do_add(ac);
1638                         break;
1639
1640                 case LDB_MODIFY:
1641                         ret = password_hash_mod_do_mod(ac);
1642                         break;
1643
1644                 default:
1645                         ret = LDB_ERR_OPERATIONS_ERROR;
1646                         break;
1647                 }
1648                 if (ret != LDB_SUCCESS) {
1649                         return ldb_module_done(ac->req, NULL, NULL, ret);
1650                 }
1651
1652         case LDB_REPLY_REFERRAL:
1653                 /* ignore */
1654                 break;
1655         }
1656
1657         talloc_free(ares);
1658         return LDB_SUCCESS;
1659 }
1660
1661 static int build_domain_data_request(struct ph_context *ac)
1662 {
1663         /* attrs[] is returned from this function in
1664            ac->dom_req->op.search.attrs, so it must be static, as
1665            otherwise the compiler can put it on the stack */
1666         struct ldb_context *ldb;
1667         static const char * const attrs[] = { "pwdProperties", "pwdHistoryLength", NULL };
1668         char *filter;
1669
1670         ldb = ldb_module_get_ctx(ac->module);
1671
1672         filter = talloc_asprintf(ac,
1673                                 "(&(objectSid=%s)(|(|(objectClass=domain)(objectClass=builtinDomain))(objectClass=samba4LocalDomain)))",
1674                                  ldap_encode_ndr_dom_sid(ac, ac->domain_sid));
1675         if (filter == NULL) {
1676                 ldb_oom(ldb);
1677                 return LDB_ERR_OPERATIONS_ERROR;
1678         }
1679
1680         return ldb_build_search_req(&ac->dom_req, ldb, ac,
1681                                     ldb_get_default_basedn(ldb),
1682                                     LDB_SCOPE_SUBTREE,
1683                                     filter, attrs,
1684                                     NULL,
1685                                     ac, get_domain_data_callback,
1686                                     ac->req);
1687 }
1688
1689 static int password_hash_add(struct ldb_module *module, struct ldb_request *req)
1690 {
1691         struct ldb_context *ldb;
1692         struct ph_context *ac;
1693         struct ldb_message_element *sambaAttr;
1694         struct ldb_message_element *clearTextPasswordAttr;
1695         struct ldb_message_element *ntAttr;
1696         struct ldb_message_element *lmAttr;
1697         int ret;
1698
1699         ldb = ldb_module_get_ctx(module);
1700
1701         ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_add\n");
1702
1703         if (ldb_dn_is_special(req->op.add.message->dn)) { /* do not manipulate our control entries */
1704                 return ldb_next_request(module, req);
1705         }
1706
1707         /* If the caller is manipulating the local passwords directly, let them pass */
1708         if (ldb_dn_compare_base(ldb_dn_new(req, ldb, LOCAL_BASE),
1709                                 req->op.add.message->dn) == 0) {
1710                 return ldb_next_request(module, req);
1711         }
1712
1713         /* nobody must touch these fields */
1714         if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
1715                 return LDB_ERR_UNWILLING_TO_PERFORM;
1716         }
1717         if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
1718                 return LDB_ERR_UNWILLING_TO_PERFORM;
1719         }
1720         if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
1721                 return LDB_ERR_UNWILLING_TO_PERFORM;
1722         }
1723
1724         /* If no part of this ADD touches the userPassword, or the NT
1725          * or LM hashes, then we don't need to make any changes.  */
1726
1727         sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
1728         clearTextPasswordAttr = ldb_msg_find_element(req->op.mod.message, "clearTextPassword");
1729         ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
1730         lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
1731
1732         if ((!sambaAttr) && (!clearTextPasswordAttr) && (!ntAttr) && (!lmAttr)) {
1733                 return ldb_next_request(module, req);
1734         }
1735
1736         /* if it is not an entry of type person its an error */
1737         /* TODO: remove this when userPassword will be in schema */
1738         if (!ldb_msg_check_string_attribute(req->op.add.message, "objectClass", "person")) {
1739                 ldb_set_errstring(ldb, "Cannot set a password on entry that does not have objectClass 'person'");
1740                 return LDB_ERR_OBJECT_CLASS_VIOLATION;
1741         }
1742
1743         /* check userPassword is single valued here */
1744         /* TODO: remove this when userPassword will be single valued in schema */
1745         if (sambaAttr && sambaAttr->num_values > 1) {
1746                 ldb_set_errstring(ldb, "mupltiple values for userPassword not allowed!\n");
1747                 return LDB_ERR_CONSTRAINT_VIOLATION;
1748         }
1749         if (clearTextPasswordAttr && clearTextPasswordAttr->num_values > 1) {
1750                 ldb_set_errstring(ldb, "mupltiple values for clearTextPassword not allowed!\n");
1751                 return LDB_ERR_CONSTRAINT_VIOLATION;
1752         }
1753
1754         if (ntAttr && (ntAttr->num_values > 1)) {
1755                 ldb_set_errstring(ldb, "mupltiple values for unicodePwd not allowed!\n");
1756                 return LDB_ERR_CONSTRAINT_VIOLATION;
1757         }
1758         if (lmAttr && (lmAttr->num_values > 1)) {
1759                 ldb_set_errstring(ldb, "mupltiple values for dBCSPwd not allowed!\n");
1760                 return LDB_ERR_CONSTRAINT_VIOLATION;
1761         }
1762
1763         if (sambaAttr && sambaAttr->num_values == 0) {
1764                 ldb_set_errstring(ldb, "userPassword must have a value!\n");
1765                 return LDB_ERR_CONSTRAINT_VIOLATION;
1766         }
1767
1768         if (clearTextPasswordAttr && clearTextPasswordAttr->num_values == 0) {
1769                 ldb_set_errstring(ldb, "clearTextPassword must have a value!\n");
1770                 return LDB_ERR_CONSTRAINT_VIOLATION;
1771         }
1772
1773         if (ntAttr && (ntAttr->num_values == 0)) {
1774                 ldb_set_errstring(ldb, "unicodePwd must have a value!\n");
1775                 return LDB_ERR_CONSTRAINT_VIOLATION;
1776         }
1777         if (lmAttr && (lmAttr->num_values == 0)) {
1778                 ldb_set_errstring(ldb, "dBCSPwd must have a value!\n");
1779                 return LDB_ERR_CONSTRAINT_VIOLATION;
1780         }
1781
1782         ac = ph_init_context(module, req);
1783         if (ac == NULL) {
1784                 return LDB_ERR_OPERATIONS_ERROR;
1785         }
1786
1787         /* get user domain data */
1788         ac->domain_sid = samdb_result_sid_prefix(ac, req->op.add.message, "objectSid");
1789         if (ac->domain_sid == NULL) {
1790                 ldb_debug(ldb, LDB_DEBUG_ERROR,
1791                           "can't handle entry with missing objectSid!\n");
1792                 return LDB_ERR_OPERATIONS_ERROR;
1793         }
1794
1795         ret = build_domain_data_request(ac);
1796         if (ret != LDB_SUCCESS) {
1797                 return ret;
1798         }
1799
1800         return ldb_next_request(module, ac->dom_req);
1801 }
1802
1803 static int password_hash_add_do_add(struct ph_context *ac)
1804 {
1805         struct ldb_context *ldb;
1806         struct ldb_request *down_req;
1807         struct ldb_message *msg;
1808         struct setup_password_fields_io io;
1809         int ret;
1810
1811         /* Prepare the internal data structure containing the passwords */
1812         ret = setup_io(ac, ac->req->op.add.message, ac->req->op.add.message, &io);
1813         if (ret != LDB_SUCCESS) {
1814                 return ret;
1815         }
1816
1817         msg = ldb_msg_copy_shallow(ac, ac->req->op.add.message);
1818         if (msg == NULL) {
1819                 return LDB_ERR_OPERATIONS_ERROR;
1820         }
1821
1822         /* remove attributes that we just read into 'io' */
1823         ldb_msg_remove_attr(msg, "userPassword");
1824         ldb_msg_remove_attr(msg, "clearTextPassword");
1825         ldb_msg_remove_attr(msg, "unicodePwd");
1826         ldb_msg_remove_attr(msg, "dBCSPwd");
1827         ldb_msg_remove_attr(msg, "pwdLastSet");
1828         io.o.kvno = samdb_result_uint(msg, "msDs-KeyVersionNumber", 1) - 1;
1829         ldb_msg_remove_attr(msg, "msDs-KeyVersionNumber");
1830
1831         ldb = ldb_module_get_ctx(ac->module);
1832
1833         ret = setup_password_fields(&io);
1834         if (ret != LDB_SUCCESS) {
1835                 return ret;
1836         }
1837
1838         if (io.g.nt_hash) {
1839                 ret = samdb_msg_add_hash(ldb, ac, msg,
1840                                          "unicodePwd", io.g.nt_hash);
1841                 if (ret != LDB_SUCCESS) {
1842                         return ret;
1843                 }
1844         }
1845         if (io.g.lm_hash) {
1846                 ret = samdb_msg_add_hash(ldb, ac, msg,
1847                                          "dBCSPwd", io.g.lm_hash);
1848                 if (ret != LDB_SUCCESS) {
1849                         return ret;
1850                 }
1851         }
1852         if (io.g.nt_history_len > 0) {
1853                 ret = samdb_msg_add_hashes(ac, msg,
1854                                            "ntPwdHistory",
1855                                            io.g.nt_history,
1856                                            io.g.nt_history_len);
1857                 if (ret != LDB_SUCCESS) {
1858                         return ret;
1859                 }
1860         }
1861         if (io.g.lm_history_len > 0) {
1862                 ret = samdb_msg_add_hashes(ac, msg,
1863                                            "lmPwdHistory",
1864                                            io.g.lm_history,
1865                                            io.g.lm_history_len);
1866                 if (ret != LDB_SUCCESS) {
1867                         return ret;
1868                 }
1869         }
1870         if (io.g.supplemental.length > 0) {
1871                 ret = ldb_msg_add_value(msg, "supplementalCredentials",
1872                                         &io.g.supplemental, NULL);
1873                 if (ret != LDB_SUCCESS) {
1874                         return ret;
1875                 }
1876         }
1877         ret = samdb_msg_add_uint64(ldb, ac, msg,
1878                                    "pwdLastSet",
1879                                    io.g.last_set);
1880         if (ret != LDB_SUCCESS) {
1881                 return ret;
1882         }
1883         ret = samdb_msg_add_uint(ldb, ac, msg,
1884                                  "msDs-KeyVersionNumber",
1885                                  io.g.kvno);
1886         if (ret != LDB_SUCCESS) {
1887                 return ret;
1888         }
1889
1890         ret = ldb_build_add_req(&down_req, ldb, ac,
1891                                 msg,
1892                                 ac->req->controls,
1893                                 ac, ph_op_callback,
1894                                 ac->req);
1895         if (ret != LDB_SUCCESS) {
1896                 return ret;
1897         }
1898
1899         return ldb_next_request(ac->module, down_req);
1900 }
1901
1902 static int password_hash_modify(struct ldb_module *module, struct ldb_request *req)
1903 {
1904         struct ldb_context *ldb;
1905         struct ph_context *ac;
1906         struct ldb_message_element *sambaAttr;
1907         struct ldb_message_element *clearTextAttr;
1908         struct ldb_message_element *ntAttr;
1909         struct ldb_message_element *lmAttr;
1910         struct ldb_message *msg;
1911         struct ldb_request *down_req;
1912         int ret;
1913
1914         ldb = ldb_module_get_ctx(module);
1915
1916         ldb_debug(ldb, LDB_DEBUG_TRACE, "password_hash_modify\n");
1917
1918         if (ldb_dn_is_special(req->op.mod.message->dn)) { /* do not manipulate our control entries */
1919                 return ldb_next_request(module, req);
1920         }
1921
1922         /* If the caller is manipulating the local passwords directly, let them pass */
1923         if (ldb_dn_compare_base(ldb_dn_new(req, ldb, LOCAL_BASE),
1924                                 req->op.mod.message->dn) == 0) {
1925                 return ldb_next_request(module, req);
1926         }
1927
1928         /* nobody must touch password Histories */
1929         if (ldb_msg_find_element(req->op.add.message, "ntPwdHistory")) {
1930                 return LDB_ERR_UNWILLING_TO_PERFORM;
1931         }
1932         if (ldb_msg_find_element(req->op.add.message, "lmPwdHistory")) {
1933                 return LDB_ERR_UNWILLING_TO_PERFORM;
1934         }
1935         if (ldb_msg_find_element(req->op.add.message, "supplementalCredentials")) {
1936                 return LDB_ERR_UNWILLING_TO_PERFORM;
1937         }
1938
1939         sambaAttr = ldb_msg_find_element(req->op.mod.message, "userPassword");
1940         clearTextAttr = ldb_msg_find_element(req->op.mod.message, "clearTextPassword");
1941         ntAttr = ldb_msg_find_element(req->op.mod.message, "unicodePwd");
1942         lmAttr = ldb_msg_find_element(req->op.mod.message, "dBCSPwd");
1943
1944         /* If no part of this touches the userPassword OR
1945          * clearTextPassword OR unicodePwd and/or dBCSPwd, then we
1946          * don't need to make any changes.  For password changes/set
1947          * there should be a 'delete' or a 'modify' on this
1948          * attribute. */
1949         if ((!sambaAttr) && (!clearTextAttr) && (!ntAttr) && (!lmAttr)) {
1950                 return ldb_next_request(module, req);
1951         }
1952
1953         /* check passwords are single valued here */
1954         /* TODO: remove this when passwords will be single valued in schema */
1955         if (sambaAttr && (sambaAttr->num_values > 1)) {
1956                 return LDB_ERR_CONSTRAINT_VIOLATION;
1957         }
1958         if (clearTextAttr && (clearTextAttr->num_values > 1)) {
1959                 return LDB_ERR_CONSTRAINT_VIOLATION;
1960         }
1961         if (ntAttr && (ntAttr->num_values > 1)) {
1962                 return LDB_ERR_CONSTRAINT_VIOLATION;
1963         }
1964         if (lmAttr && (lmAttr->num_values > 1)) {
1965                 return LDB_ERR_CONSTRAINT_VIOLATION;
1966         }
1967
1968         ac = ph_init_context(module, req);
1969         if (!ac) {
1970                 return LDB_ERR_OPERATIONS_ERROR;
1971         }
1972
1973         /* use a new message structure so that we can modify it */
1974         msg = ldb_msg_copy_shallow(ac, req->op.mod.message);
1975         if (msg == NULL) {
1976                 ldb_oom(ldb);
1977                 return LDB_ERR_OPERATIONS_ERROR;
1978         }
1979
1980         /* - remove any modification to the password from the first commit
1981          *   we will make the real modification later */
1982         if (sambaAttr) ldb_msg_remove_attr(msg, "userPassword");
1983         if (clearTextAttr) ldb_msg_remove_attr(msg, "clearTextPassword");
1984         if (ntAttr) ldb_msg_remove_attr(msg, "unicodePwd");
1985         if (lmAttr) ldb_msg_remove_attr(msg, "dBCSPwd");
1986
1987         /* if there was nothing else to be modified skip to next step */
1988         if (msg->num_elements == 0) {
1989                 return password_hash_mod_search_self(ac);
1990         }
1991
1992         ret = ldb_build_mod_req(&down_req, ldb, ac,
1993                                 msg,
1994                                 req->controls,
1995                                 ac, ph_modify_callback,
1996                                 req);
1997         if (ret != LDB_SUCCESS) {
1998                 return ret;
1999         }
2000
2001         return ldb_next_request(module, down_req);
2002 }
2003
2004 static int ph_modify_callback(struct ldb_request *req, struct ldb_reply *ares)
2005 {
2006         struct ph_context *ac;
2007         int ret;
2008
2009         ac = talloc_get_type(req->context, struct ph_context);
2010
2011         if (!ares) {
2012                 return ldb_module_done(ac->req, NULL, NULL,
2013                                         LDB_ERR_OPERATIONS_ERROR);
2014         }
2015         if (ares->error != LDB_SUCCESS) {
2016                 return ldb_module_done(ac->req, ares->controls,
2017                                         ares->response, ares->error);
2018         }
2019
2020         if (ares->type != LDB_REPLY_DONE) {
2021                 talloc_free(ares);
2022                 return ldb_module_done(ac->req, NULL, NULL,
2023                                         LDB_ERR_OPERATIONS_ERROR);
2024         }
2025
2026         ret = password_hash_mod_search_self(ac);
2027         if (ret != LDB_SUCCESS) {
2028                 return ldb_module_done(ac->req, NULL, NULL, ret);
2029         }
2030
2031         talloc_free(ares);
2032         return LDB_SUCCESS;
2033 }
2034
2035 static int ph_mod_search_callback(struct ldb_request *req, struct ldb_reply *ares)
2036 {
2037         struct ldb_context *ldb;
2038         struct ph_context *ac;
2039         int ret;
2040
2041         ac = talloc_get_type(req->context, struct ph_context);
2042         ldb = ldb_module_get_ctx(ac->module);
2043
2044         if (!ares) {
2045                 return ldb_module_done(ac->req, NULL, NULL,
2046                                         LDB_ERR_OPERATIONS_ERROR);
2047         }
2048         if (ares->error != LDB_SUCCESS) {
2049                 return ldb_module_done(ac->req, ares->controls,
2050                                         ares->response, ares->error);
2051         }
2052
2053         /* we are interested only in the single reply (base search) */
2054         switch (ares->type) {
2055         case LDB_REPLY_ENTRY:
2056
2057                 if (ac->search_res != NULL) {
2058                         ldb_set_errstring(ldb, "Too many results");
2059                         talloc_free(ares);
2060                         return ldb_module_done(ac->req, NULL, NULL,
2061                                                 LDB_ERR_OPERATIONS_ERROR);
2062                 }
2063
2064                 /* if it is not an entry of type person this is an error */
2065                 /* TODO: remove this when sambaPassword will be in schema */
2066                 if (!ldb_msg_check_string_attribute(ares->message, "objectClass", "person")) {
2067                         ldb_set_errstring(ldb, "Object class violation");
2068                         talloc_free(ares);
2069                         return ldb_module_done(ac->req, NULL, NULL,
2070                                         LDB_ERR_OBJECT_CLASS_VIOLATION);
2071                 }
2072
2073                 ac->search_res = talloc_steal(ac, ares);
2074                 return LDB_SUCCESS;
2075
2076         case LDB_REPLY_DONE:
2077
2078                 /* get object domain sid */
2079                 ac->domain_sid = samdb_result_sid_prefix(ac,
2080                                                         ac->search_res->message,
2081                                                         "objectSid");
2082                 if (ac->domain_sid == NULL) {
2083                         ldb_debug(ldb, LDB_DEBUG_ERROR,
2084                                   "can't handle entry without objectSid!\n");
2085                         return ldb_module_done(ac->req, NULL, NULL,
2086                                                 LDB_ERR_OPERATIONS_ERROR);
2087                 }
2088
2089                 /* get user domain data */
2090                 ret = build_domain_data_request(ac);
2091                 if (ret != LDB_SUCCESS) {
2092                         return ldb_module_done(ac->req, NULL, NULL,ret);
2093                 }
2094
2095                 return ldb_next_request(ac->module, ac->dom_req);
2096
2097         case LDB_REPLY_REFERRAL:
2098                 /*ignore anything else for now */
2099                 break;
2100         }
2101
2102         talloc_free(ares);
2103         return LDB_SUCCESS;
2104 }
2105
2106 static int password_hash_mod_search_self(struct ph_context *ac)
2107 {
2108         struct ldb_context *ldb;
2109         static const char * const attrs[] = { "userAccountControl", "lmPwdHistory",
2110                                               "ntPwdHistory",
2111                                               "objectSid", "msDS-KeyVersionNumber",
2112                                               "objectClass", "userPrincipalName",
2113                                               "sAMAccountName",
2114                                               "dBCSPwd", "unicodePwd",
2115                                               "supplementalCredentials",
2116                                               NULL };
2117         struct ldb_request *search_req;
2118         int ret;
2119
2120         ldb = ldb_module_get_ctx(ac->module);
2121
2122         ret = ldb_build_search_req(&search_req, ldb, ac,
2123                                    ac->req->op.mod.message->dn,
2124                                    LDB_SCOPE_BASE,
2125                                    "(objectclass=*)",
2126                                    attrs,
2127                                    NULL,
2128                                    ac, ph_mod_search_callback,
2129                                    ac->req);
2130
2131         if (ret != LDB_SUCCESS) {
2132                 return ret;
2133         }
2134
2135         return ldb_next_request(ac->module, search_req);
2136 }
2137
2138 static int password_hash_mod_do_mod(struct ph_context *ac)
2139 {
2140         struct ldb_context *ldb;
2141         struct ldb_request *mod_req;
2142         struct ldb_message *msg;
2143         const struct ldb_message *searched_msg;
2144         struct setup_password_fields_io io;
2145         int ret;
2146
2147         ldb = ldb_module_get_ctx(ac->module);
2148
2149         /* use a new message structure so that we can modify it */
2150         msg = ldb_msg_new(ac);
2151         if (msg == NULL) {
2152                 return LDB_ERR_OPERATIONS_ERROR;
2153         }
2154
2155         /* modify dn */
2156         msg->dn = ac->req->op.mod.message->dn;
2157
2158         /* Prepare the internal data structure containing the passwords */
2159         ret = setup_io(ac,
2160                        ac->req->op.mod.message,
2161                        ac->search_res->message,
2162                        &io);
2163         if (ret != LDB_SUCCESS) {
2164                 return ret;
2165         }
2166
2167         searched_msg = ac->search_res->message;
2168
2169         /* Fill in some final details (only relevent once the password has been set) */
2170         io.o.kvno                       = samdb_result_uint(searched_msg, "msDs-KeyVersionNumber", 0);
2171         io.o.nt_history_len             = samdb_result_hashes(io.ac, searched_msg, "ntPwdHistory", &io.o.nt_history);
2172         io.o.lm_history_len             = samdb_result_hashes(io.ac, searched_msg, "lmPwdHistory", &io.o.lm_history);
2173         io.o.supplemental               = ldb_msg_find_ldb_val(searched_msg, "supplementalCredentials");
2174
2175         ret = setup_password_fields(&io);
2176         if (ret != LDB_SUCCESS) {
2177                 return ret;
2178         }
2179
2180         /* make sure we replace all the old attributes */
2181         ret = ldb_msg_add_empty(msg, "unicodePwd", LDB_FLAG_MOD_REPLACE, NULL);
2182         ret = ldb_msg_add_empty(msg, "dBCSPwd", LDB_FLAG_MOD_REPLACE, NULL);
2183         ret = ldb_msg_add_empty(msg, "ntPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
2184         ret = ldb_msg_add_empty(msg, "lmPwdHistory", LDB_FLAG_MOD_REPLACE, NULL);
2185         ret = ldb_msg_add_empty(msg, "supplementalCredentials", LDB_FLAG_MOD_REPLACE, NULL);
2186         ret = ldb_msg_add_empty(msg, "pwdLastSet", LDB_FLAG_MOD_REPLACE, NULL);
2187         ret = ldb_msg_add_empty(msg, "msDs-KeyVersionNumber", LDB_FLAG_MOD_REPLACE, NULL);
2188
2189         if (io.g.nt_hash) {
2190                 ret = samdb_msg_add_hash(ldb, ac, msg,
2191                                          "unicodePwd", io.g.nt_hash);
2192                 if (ret != LDB_SUCCESS) {
2193                         return ret;
2194                 }
2195         }
2196         if (io.g.lm_hash) {
2197                 ret = samdb_msg_add_hash(ldb, ac, msg,
2198                                          "dBCSPwd", io.g.lm_hash);
2199                 if (ret != LDB_SUCCESS) {
2200                         return ret;
2201                 }
2202         }
2203         if (io.g.nt_history_len > 0) {
2204                 ret = samdb_msg_add_hashes(ac, msg,
2205                                            "ntPwdHistory",
2206                                            io.g.nt_history,
2207                                            io.g.nt_history_len);
2208                 if (ret != LDB_SUCCESS) {
2209                         return ret;
2210                 }
2211         }
2212         if (io.g.lm_history_len > 0) {
2213                 ret = samdb_msg_add_hashes(ac, msg,
2214                                            "lmPwdHistory",
2215                                            io.g.lm_history,
2216                                            io.g.lm_history_len);
2217                 if (ret != LDB_SUCCESS) {
2218                         return ret;
2219                 }
2220         }
2221         if (io.g.supplemental.length > 0) {
2222                 ret = ldb_msg_add_value(msg, "supplementalCredentials",
2223                                         &io.g.supplemental, NULL);
2224                 if (ret != LDB_SUCCESS) {
2225                         return ret;
2226                 }
2227         }
2228         ret = samdb_msg_add_uint64(ldb, ac, msg,
2229                                    "pwdLastSet",
2230                                    io.g.last_set);
2231         if (ret != LDB_SUCCESS) {
2232                 return ret;
2233         }
2234         ret = samdb_msg_add_uint(ldb, ac, msg,
2235                                  "msDs-KeyVersionNumber",
2236                                  io.g.kvno);
2237         if (ret != LDB_SUCCESS) {
2238                 return ret;
2239         }
2240
2241         ret = ldb_build_mod_req(&mod_req, ldb, ac,
2242                                 msg,
2243                                 ac->req->controls,
2244                                 ac, ph_op_callback,
2245                                 ac->req);
2246         if (ret != LDB_SUCCESS) {
2247                 return ret;
2248         }
2249
2250         return ldb_next_request(ac->module, mod_req);
2251 }
2252
2253 _PUBLIC_ const struct ldb_module_ops ldb_password_hash_module_ops = {
2254         .name          = "password_hash",
2255         .add           = password_hash_add,
2256         .modify        = password_hash_modify,
2257 };