source3/libnet/libnet_dssync.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    Copyright (C) Stefan (metze) Metzmacher 2005
   5    Copyright (C) Guenther Deschner 2008
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21
  22 #include "includes.h"
  23 #include "libnet/libnet_dssync.h"
  24
  25 /****************************************************************
  26 ****************************************************************/
  27
  28 static int libnet_dssync_free_context(struct dssync_context *ctx)
  29 {
  30         if (!ctx) {
  31                 return 0;
  32         }
  33
  34         if (is_valid_policy_hnd(&ctx->bind_handle) && ctx->cli) {
  35                 rpccli_drsuapi_DsUnbind(ctx->cli, ctx, &ctx->bind_handle, NULL);
  36         }
  37
  38         return 0;
  39 }
  40
  41 /****************************************************************
  42 ****************************************************************/
  43
  44 NTSTATUS libnet_dssync_init_context(TALLOC_CTX *mem_ctx,
  45                                     struct dssync_context **ctx_p)
  46 {
  47         struct dssync_context *ctx;
  48
  49         ctx = TALLOC_ZERO_P(mem_ctx, struct dssync_context);
  50         NT_STATUS_HAVE_NO_MEMORY(ctx);
  51
  52         talloc_set_destructor(ctx, libnet_dssync_free_context);
  53
  54         *ctx_p = ctx;
  55
  56         return NT_STATUS_OK;
  57 }
  58
  59 /****************************************************************
  60 ****************************************************************/
  61
  62 static DATA_BLOB *decrypt_attr_val(TALLOC_CTX *mem_ctx,
  63                                    DATA_BLOB *session_key,
  64                                    uint32_t rid,
  65                                    enum drsuapi_DsAttributeId id,
  66                                    DATA_BLOB *raw_data)
  67 {
  68         bool rcrypt = false;
  69         DATA_BLOB out_data;
  70
  71         ZERO_STRUCT(out_data);
  72
  73         switch (id) {
  74                 case DRSUAPI_ATTRIBUTE_dBCSPwd:
  75                 case DRSUAPI_ATTRIBUTE_unicodePwd:
  76                 case DRSUAPI_ATTRIBUTE_ntPwdHistory:
  77                 case DRSUAPI_ATTRIBUTE_lmPwdHistory:
  78                         rcrypt  = true;
  79                         break;
  80                 case DRSUAPI_ATTRIBUTE_supplementalCredentials:
  81                 case DRSUAPI_ATTRIBUTE_priorValue:
  82                 case DRSUAPI_ATTRIBUTE_currentValue:
  83                 case DRSUAPI_ATTRIBUTE_trustAuthOutgoing:
  84                 case DRSUAPI_ATTRIBUTE_trustAuthIncoming:
  85                 case DRSUAPI_ATTRIBUTE_initialAuthOutgoing:
  86                 case DRSUAPI_ATTRIBUTE_initialAuthIncoming:
  87                         break;
  88                 default:
  89                         return raw_data;
  90         }
  91
  92         out_data = decrypt_drsuapi_blob(mem_ctx, session_key, rcrypt,
  93                                           rid, raw_data);
  94
  95         if (out_data.length) {
  96                 return (DATA_BLOB *)talloc_memdup(mem_ctx, &out_data, sizeof(DATA_BLOB));
  97         }
  98
  99         return raw_data;
 100 }
 101
 102 /****************************************************************
 103 ****************************************************************/
 104
 105 static void parse_obj_identifier(struct drsuapi_DsReplicaObjectIdentifier *id,
 106                                  uint32_t *rid)
 107 {
 108         if (!id || !rid) {
 109                 return;
 110         }
 111
 112         *rid = 0;
 113
 114         if (id->sid.num_auths > 0) {
 115                 *rid = id->sid.sub_auths[id->sid.num_auths - 1];
 116         }
 117 }
 118
 119 /****************************************************************
 120 ****************************************************************/
 121
 122 static void parse_obj_attribute(TALLOC_CTX *mem_ctx,
 123                                 DATA_BLOB *session_key,
 124                                 uint32_t rid,
 125                                 struct drsuapi_DsReplicaAttribute *attr)
 126 {
 127         int i = 0;
 128
 129         for (i=0; i<attr->value_ctr.num_values; i++) {
 130
 131                 DATA_BLOB *plain_data = NULL;
 132
 133                 plain_data = decrypt_attr_val(mem_ctx,
 134                                               session_key,
 135                                               rid,
 136                                               attr->attid,
 137                                               attr->value_ctr.values[i].blob);
 138
 139                 attr->value_ctr.values[i].blob = plain_data;
 140         }
 141 }
 142
 143 /****************************************************************
 144 ****************************************************************/
 145
 146 static void libnet_dssync_decrypt_attributes(TALLOC_CTX *mem_ctx,
 147                                              DATA_BLOB *session_key,
 148                                              struct drsuapi_DsReplicaObjectListItemEx *cur)
 149 {
 150         for (; cur; cur = cur->next_object) {
 151
 152                 uint32_t i;
 153                 uint32_t rid = 0;
 154
 155                 parse_obj_identifier(cur->object.identifier, &rid);
 156
 157                 for (i=0; i < cur->object.attribute_ctr.num_attributes; i++) {
 158
 159                         struct drsuapi_DsReplicaAttribute *attr;
 160
 161                         attr = &cur->object.attribute_ctr.attributes[i];
 162
 163                         if (attr->value_ctr.num_values < 1) {
 164                                 continue;
 165                         }
 166
 167                         if (!attr->value_ctr.values[0].blob) {
 168                                 continue;
 169                         }
 170
 171                         parse_obj_attribute(mem_ctx,
 172                                             session_key,
 173                                             rid,
 174                                             attr);
 175                 }
 176         }
 177 }
 178 /****************************************************************
 179 ****************************************************************/
 180
 181 static NTSTATUS libnet_dssync_bind(TALLOC_CTX *mem_ctx,
 182                                    struct dssync_context *ctx)
 183 {
 184         NTSTATUS status;
 185         WERROR werr;
 186
 187         struct GUID bind_guid;
 188         struct drsuapi_DsBindInfoCtr bind_info;
 189         struct drsuapi_DsBindInfo28 info28;
 190
 191         ZERO_STRUCT(info28);
 192
 193         GUID_from_string(DRSUAPI_DS_BIND_GUID, &bind_guid);
 194
 195         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_BASE;
 196         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ASYNC_REPLICATION;
 197         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_REMOVEAPI;
 198         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_MOVEREQ_V2;
 199         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHG_COMPRESS;
 200         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V1;
 201         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_RESTORE_USN_OPTIMIZATION;
 202         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_KCC_EXECUTE;
 203         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRY_V2;
 204         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_LINKED_VALUE_REPLICATION;
 205         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V2;
 206         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_INSTANCE_TYPE_NOT_REQ_ON_MOD;
 207         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_CRYPTO_BIND;
 208         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GET_REPL_INFO;
 209         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_STRONG_ENCRYPTION;
 210         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_DCINFO_V01;
 211         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_TRANSITIVE_MEMBERSHIP;
 212         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADD_SID_HISTORY;
 213         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_POST_BETA3;
 214         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GET_MEMBERSHIPS2;
 215         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V6;
 216         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_NONDOMAIN_NCS;
 217         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREQ_V8;
 218         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V5;
 219         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V6;
 220         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_ADDENTRYREPLY_V3;
 221         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_GETCHGREPLY_V7;
 222         info28.supported_extensions     |= DRSUAPI_SUPPORTED_EXTENSION_VERIFY_OBJECT;
 223         info28.site_guid                = GUID_zero();
 224         info28.u1                       = 508;
 225         info28.repl_epoch               = 0;
 226
 227         bind_info.length = 28;
 228         bind_info.info.info28 = info28;
 229
 230         status = rpccli_drsuapi_DsBind(ctx->cli, mem_ctx,
 231                                        &bind_guid,
 232                                        &bind_info,
 233                                        &ctx->bind_handle,
 234                                        &werr);
 235
 236         if (!NT_STATUS_IS_OK(status)) {
 237                 return status;
 238         }
 239
 240         if (!W_ERROR_IS_OK(werr)) {
 241                 return werror_to_ntstatus(werr);
 242         }
 243
 244         return status;
 245 }
 246
 247 /****************************************************************
 248 ****************************************************************/
 249
 250 static NTSTATUS libnet_dssync_lookup_nc(TALLOC_CTX *mem_ctx,
 251                                         struct dssync_context *ctx)
 252 {
 253         NTSTATUS status;
 254         WERROR werr;
 255         int32_t level = 1;
 256         union drsuapi_DsNameRequest req;
 257         int32_t level_out;
 258         struct drsuapi_DsNameString names[1];
 259         union drsuapi_DsNameCtr ctr;
 260
 261         names[0].str = talloc_asprintf(mem_ctx, "%s\\", ctx->domain_name);
 262         NT_STATUS_HAVE_NO_MEMORY(names[0].str);
 263
 264         req.req1.codepage       = 1252; /* german */
 265         req.req1.language       = 0x00000407; /* german */
 266         req.req1.count          = 1;
 267         req.req1.names          = names;
 268         req.req1.format_flags   = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
 269         req.req1.format_offered = DRSUAPI_DS_NAME_FORMAT_UKNOWN;
 270         req.req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
 271
 272         status = rpccli_drsuapi_DsCrackNames(ctx->cli, mem_ctx,
 273                                              &ctx->bind_handle,
 274                                              level,
 275                                              &req,
 276                                              &level_out,
 277                                              &ctr,
 278                                              &werr);
 279         if (!NT_STATUS_IS_OK(status)) {
 280                 ctx->error_message = talloc_asprintf(mem_ctx,
 281                         "Failed to lookup DN for domain name: %s",
 282                         get_friendly_werror_msg(werr));
 283                 return status;
 284         }
 285
 286         if (!W_ERROR_IS_OK(werr)) {
 287                 return werror_to_ntstatus(werr);
 288         }
 289
 290         if (ctr.ctr1->count != 1) {
 291                 return NT_STATUS_UNSUCCESSFUL;
 292         }
 293
 294         if (ctr.ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
 295                 return NT_STATUS_UNSUCCESSFUL;
 296         }
 297
 298         ctx->nc_dn = talloc_strdup(mem_ctx, ctr.ctr1->array[0].result_name);
 299         NT_STATUS_HAVE_NO_MEMORY(ctx->nc_dn);
 300
 301         if (!ctx->dns_domain_name) {
 302                 ctx->dns_domain_name = talloc_strdup_upper(mem_ctx,
 303                         ctr.ctr1->array[0].dns_domain_name);
 304                 NT_STATUS_HAVE_NO_MEMORY(ctx->dns_domain_name);
 305         }
 306
 307         return NT_STATUS_OK;
 308 }
 309
 310 /****************************************************************
 311 ****************************************************************/
 312
 313 static NTSTATUS libnet_dssync_init(TALLOC_CTX *mem_ctx,
 314                                    struct dssync_context *ctx)
 315 {
 316         NTSTATUS status;
 317
 318         status = libnet_dssync_bind(mem_ctx, ctx);
 319         if (!NT_STATUS_IS_OK(status)) {
 320                 return status;
 321         }
 322
 323         if (!ctx->nc_dn) {
 324                 status = libnet_dssync_lookup_nc(mem_ctx, ctx);
 325         }
 326
 327         return status;
 328 }
 329
 330 /****************************************************************
 331 ****************************************************************/
 332
 333 static NTSTATUS libnet_dssync_process(TALLOC_CTX *mem_ctx,
 334                                       struct dssync_context *ctx)
 335 {
 336         NTSTATUS status;
 337         WERROR werr;
 338
 339         int32_t level = 8;
 340         int32_t level_out = 0;
 341         union drsuapi_DsGetNCChangesRequest req;
 342         union drsuapi_DsGetNCChangesCtr ctr;
 343         struct drsuapi_DsReplicaObjectIdentifier nc;
 344         struct dom_sid null_sid;
 345
 346         struct drsuapi_DsGetNCChangesCtr1 *ctr1 = NULL;
 347         struct drsuapi_DsGetNCChangesCtr6 *ctr6 = NULL;
 348         int32_t out_level = 0;
 349         int y;
 350
 351         ZERO_STRUCT(null_sid);
 352         ZERO_STRUCT(req);
 353
 354         nc.dn = ctx->nc_dn;
 355         nc.guid = GUID_zero();
 356         nc.sid = null_sid;
 357
 358         req.req8.naming_context         = &nc;
 359         req.req8.replica_flags          = DRSUAPI_DS_REPLICA_NEIGHBOUR_WRITEABLE |
 360                                           DRSUAPI_DS_REPLICA_NEIGHBOUR_SYNC_ON_STARTUP |
 361                                           DRSUAPI_DS_REPLICA_NEIGHBOUR_DO_SCHEDULED_SYNCS |
 362                                           DRSUAPI_DS_REPLICA_NEIGHBOUR_RETURN_OBJECT_PARENTS |
 363                                           DRSUAPI_DS_REPLICA_NEIGHBOUR_NEVER_SYNCED;
 364         req.req8.max_object_count       = 402;
 365         req.req8.max_ndr_size           = 402116;
 366
 367         for (y=0; ;y++) {
 368
 369                 if (level == 8) {
 370                         DEBUG(1,("start[%d] tmp_higest_usn: %llu , highest_usn: %llu\n",y,
 371                                 (long long)req.req8.highwatermark.tmp_highest_usn,
 372                                 (long long)req.req8.highwatermark.highest_usn));
 373                 }
 374
 375                 status = rpccli_drsuapi_DsGetNCChanges(ctx->cli, mem_ctx,
 376                                                        &ctx->bind_handle,
 377                                                        level,
 378                                                        &req,
 379                                                        &level_out,
 380                                                        &ctr,
 381                                                        &werr);
 382                 if (!NT_STATUS_IS_OK(status)) {
 383                         ctx->error_message = talloc_asprintf(mem_ctx,
 384                                 "Failed to get NC Changes: %s",
 385                                 get_friendly_werror_msg(werr));
 386                         goto out;
 387                 }
 388
 389                 if (!W_ERROR_IS_OK(werr)) {
 390                         status = werror_to_ntstatus(werr);
 391                         goto out;
 392                 }
 393
 394                 if (level_out == 1) {
 395                         out_level = 1;
 396                         ctr1 = &ctr.ctr1;
 397                 } else if (level_out == 2) {
 398                         out_level = 1;
 399                         ctr1 = ctr.ctr2.ctr.mszip1.ctr1;
 400                 }
 401
 402                 status = cli_get_session_key(mem_ctx, ctx->cli, &ctx->session_key);
 403                 if (!NT_STATUS_IS_OK(status)) {
 404                         ctx->error_message = talloc_asprintf(mem_ctx,
 405                                 "Failed to get Session Key: %s",
 406                                 nt_errstr(status));
 407                         return status;
 408                 }
 409
 410                 if (out_level == 1) {
 411                         DEBUG(1,("end[%d] tmp_highest_usn: %llu , highest_usn: %llu\n",y,
 412                                 (long long)ctr1->new_highwatermark.tmp_highest_usn,
 413                                 (long long)ctr1->new_highwatermark.highest_usn));
 414
 415                         libnet_dssync_decrypt_attributes(mem_ctx,
 416                                                          &ctx->session_key,
 417                                                          ctr1->first_object);
 418
 419                         if (ctx->processing_fn) {
 420                                 status = ctx->processing_fn(mem_ctx,
 421                                                             ctr1->first_object,
 422                                                             &ctr1->mapping_ctr,
 423                                                             ctx);
 424                                 if (!NT_STATUS_IS_OK(status)) {
 425                                         ctx->error_message = talloc_asprintf(mem_ctx,
 426                                                 "Failed to call processing function: %s",
 427                                                 nt_errstr(status));
 428                                         goto out;
 429                                 }
 430                         }
 431
 432                         if (ctr1->new_highwatermark.tmp_highest_usn > ctr1->new_highwatermark.highest_usn) {
 433                                 req.req5.highwatermark = ctr1->new_highwatermark;
 434                                 continue;
 435                         }
 436                 }
 437
 438                 if (level_out == 6) {
 439                         out_level = 6;
 440                         ctr6 = &ctr.ctr6;
 441                 } else if (level_out == 7
 442                            && ctr.ctr7.level == 6
 443                            && ctr.ctr7.type == DRSUAPI_COMPRESSION_TYPE_MSZIP) {
 444                         out_level = 6;
 445                         ctr6 = ctr.ctr7.ctr.mszip6.ctr6;
 446                 }
 447
 448                 if (out_level == 6) {
 449                         DEBUG(1,("end[%d] tmp_highest_usn: %llu , highest_usn: %llu\n",y,
 450                                 (long long)ctr6->new_highwatermark.tmp_highest_usn,
 451                                 (long long)ctr6->new_highwatermark.highest_usn));
 452
 453                         libnet_dssync_decrypt_attributes(mem_ctx,
 454                                                          &ctx->session_key,
 455                                                          ctr6->first_object);
 456
 457                         if (ctx->processing_fn) {
 458                                 status = ctx->processing_fn(mem_ctx,
 459                                                             ctr6->first_object,
 460                                                             &ctr6->mapping_ctr,
 461                                                             ctx);
 462                                 if (!NT_STATUS_IS_OK(status)) {
 463                                         ctx->error_message = talloc_asprintf(mem_ctx,
 464                                                 "Failed to call processing function: %s",
 465                                                 nt_errstr(status));
 466                                         goto out;
 467                                 }
 468                         }
 469
 470                         if (ctr6->new_highwatermark.tmp_highest_usn > ctr6->new_highwatermark.highest_usn) {
 471                                 req.req8.highwatermark = ctr6->new_highwatermark;
 472                                 continue;
 473                         }
 474                 }
 475
 476                 break;
 477         }
 478
 479  out:
 480         return status;
 481 }
 482
 483 /****************************************************************
 484 ****************************************************************/
 485
 486 NTSTATUS libnet_dssync(TALLOC_CTX *mem_ctx,
 487                        struct dssync_context *ctx)
 488 {
 489         NTSTATUS status;
 490
 491         status = libnet_dssync_init(mem_ctx, ctx);
 492         if (!NT_STATUS_IS_OK(status)) {
 493                 goto out;
 494         }
 495
 496         status = libnet_dssync_process(mem_ctx, ctx);
 497         if (!NT_STATUS_IS_OK(status)) {
 498                 goto out;
 499         }
 500
 501  out:
 502         return status;
 503 }