2 Unix SMB/CIFS implementation.
4 Extract the user/system database from a remote SamSync server
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2004-2005
7 Copyright (C) Guenther Deschner <gd@samba.org> 2008
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.
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.
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/>.
25 #include "libnet/libnet.h"
28 * Decrypt and extract the user's passwords.
30 * The writes decrypted (no longer 'RID encrypted' or arcfour encrypted)
31 * passwords back into the structure
34 static NTSTATUS fix_user(TALLOC_CTX *mem_ctx,
35 DATA_BLOB *session_key,
36 enum netr_SamDatabaseID database_id,
37 struct netr_DELTA_ENUM *delta)
40 uint32_t rid = delta->delta_id_union.rid;
41 struct netr_DELTA_USER *user = delta->delta_union.user;
42 struct samr_Password lm_hash;
43 struct samr_Password nt_hash;
44 unsigned char zero_buf[16];
46 memset(zero_buf, '\0', sizeof(zero_buf));
48 /* Note that win2000 may send us all zeros
49 * for the hashes if it doesn't
50 * think this channel is secure enough. */
51 if (user->lm_password_present) {
52 if (memcmp(user->lmpassword.hash, zero_buf, 16) != 0) {
53 sam_pwd_hash(rid, user->lmpassword.hash, lm_hash.hash, 0);
55 memset(lm_hash.hash, '\0', sizeof(lm_hash.hash));
57 user->lmpassword = lm_hash;
60 if (user->nt_password_present) {
61 if (memcmp(user->ntpassword.hash, zero_buf, 16) != 0) {
62 sam_pwd_hash(rid, user->ntpassword.hash, nt_hash.hash, 0);
64 memset(nt_hash.hash, '\0', sizeof(nt_hash.hash));
66 user->ntpassword = nt_hash;
69 if (user->user_private_info.SensitiveData) {
71 struct netr_USER_KEYS keys;
72 enum ndr_err_code ndr_err;
73 data.data = user->user_private_info.SensitiveData;
74 data.length = user->user_private_info.DataLength;
75 SamOEMhashBlob(data.data, data.length, session_key);
76 user->user_private_info.SensitiveData = data.data;
77 user->user_private_info.DataLength = data.length;
79 ndr_err = ndr_pull_struct_blob(&data, mem_ctx, NULL, &keys,
80 (ndr_pull_flags_fn_t)ndr_pull_netr_USER_KEYS);
81 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
82 dump_data(10, data.data, data.length);
83 return ndr_map_error2ntstatus(ndr_err);
86 /* Note that win2000 may send us all zeros
87 * for the hashes if it doesn't
88 * think this channel is secure enough. */
89 if (keys.keys.keys2.lmpassword.length == 16) {
90 if (memcmp(keys.keys.keys2.lmpassword.pwd.hash,
93 keys.keys.keys2.lmpassword.pwd.hash,
96 memset(lm_hash.hash, '\0', sizeof(lm_hash.hash));
98 user->lmpassword = lm_hash;
99 user->lm_password_present = true;
101 if (keys.keys.keys2.ntpassword.length == 16) {
102 if (memcmp(keys.keys.keys2.ntpassword.pwd.hash,
103 zero_buf, 16) != 0) {
105 keys.keys.keys2.ntpassword.pwd.hash,
108 memset(nt_hash.hash, '\0', sizeof(nt_hash.hash));
110 user->ntpassword = nt_hash;
111 user->nt_password_present = true;
113 /* TODO: rid decrypt history fields */
119 * Decrypt and extract the secrets
121 * The writes decrypted secrets back into the structure
123 static NTSTATUS fix_secret(TALLOC_CTX *mem_ctx,
124 DATA_BLOB *session_key,
125 enum netr_SamDatabaseID database_id,
126 struct netr_DELTA_ENUM *delta)
128 struct netr_DELTA_SECRET *secret = delta->delta_union.secret;
130 SamOEMhashBlob(secret->current_cipher.cipher_data,
131 secret->current_cipher.maxlen,
134 SamOEMhashBlob(secret->old_cipher.cipher_data,
135 secret->old_cipher.maxlen,
142 * Fix up the delta, dealing with encryption issues so that the final
143 * callback need only do the printing or application logic
146 static NTSTATUS samsync_fix_delta(TALLOC_CTX *mem_ctx,
147 DATA_BLOB *session_key,
148 enum netr_SamDatabaseID database_id,
149 struct netr_DELTA_ENUM *delta)
151 NTSTATUS status = NT_STATUS_OK;
153 switch (delta->delta_type) {
154 case NETR_DELTA_USER:
156 status = fix_user(mem_ctx,
161 case NETR_DELTA_SECRET:
163 status = fix_secret(mem_ctx,
176 * Fix up the delta, dealing with encryption issues so that the final
177 * callback need only do the printing or application logic
180 static NTSTATUS samsync_fix_delta_array(TALLOC_CTX *mem_ctx,
181 DATA_BLOB *session_key,
182 enum netr_SamDatabaseID database_id,
183 struct netr_DELTA_ENUM_ARRAY *r)
188 for (i = 0; i < r->num_deltas; i++) {
190 status = samsync_fix_delta(mem_ctx,
194 if (!NT_STATUS_IS_OK(status)) {
203 * libnet_samsync_init_context
206 NTSTATUS libnet_samsync_init_context(TALLOC_CTX *mem_ctx,
207 const struct dom_sid *domain_sid,
208 struct samsync_context **ctx_p)
210 struct samsync_context *ctx;
214 ctx = TALLOC_ZERO_P(mem_ctx, struct samsync_context);
215 NT_STATUS_HAVE_NO_MEMORY(ctx);
218 ctx->domain_sid = sid_dup_talloc(mem_ctx, domain_sid);
219 NT_STATUS_HAVE_NO_MEMORY(ctx->domain_sid);
221 ctx->domain_sid_str = sid_string_talloc(mem_ctx, ctx->domain_sid);
222 NT_STATUS_HAVE_NO_MEMORY(ctx->domain_sid_str);
231 * samsync_database_str
234 static const char *samsync_database_str(enum netr_SamDatabaseID database_id)
237 switch (database_id) {
238 case SAM_DATABASE_DOMAIN:
240 case SAM_DATABASE_BUILTIN:
242 case SAM_DATABASE_PRIVS:
253 static const char *samsync_debug_str(TALLOC_CTX *mem_ctx,
254 enum net_samsync_mode mode,
255 enum netr_SamDatabaseID database_id)
257 const char *action = NULL;
260 case NET_SAMSYNC_MODE_DUMP:
261 action = "Dumping (to stdout)";
263 case NET_SAMSYNC_MODE_FETCH_PASSDB:
264 action = "Fetching (to passdb)";
266 case NET_SAMSYNC_MODE_FETCH_LDIF:
267 action = "Fetching (to ldif)";
269 case NET_SAMSYNC_MODE_FETCH_KEYTAB:
270 action = "Fetching (to keytab)";
277 return talloc_asprintf(mem_ctx, "%s %s database",
278 action, samsync_database_str(database_id));
285 static void libnet_init_netr_ChangeLogEntry(struct samsync_object *o,
286 struct netr_ChangeLogEntry *e)
290 e->db_index = o->database_id;
291 e->delta_type = o->object_type;
293 switch (e->delta_type) {
294 case NETR_DELTA_DOMAIN:
295 case NETR_DELTA_DELETE_GROUP:
296 case NETR_DELTA_RENAME_GROUP:
297 case NETR_DELTA_DELETE_USER:
298 case NETR_DELTA_RENAME_USER:
299 case NETR_DELTA_DELETE_ALIAS:
300 case NETR_DELTA_RENAME_ALIAS:
301 case NETR_DELTA_DELETE_TRUST:
302 case NETR_DELTA_DELETE_ACCOUNT:
303 case NETR_DELTA_DELETE_SECRET:
304 case NETR_DELTA_DELETE_GROUP2:
305 case NETR_DELTA_DELETE_USER2:
306 case NETR_DELTA_MODIFY_COUNT:
308 case NETR_DELTA_USER:
309 case NETR_DELTA_GROUP:
310 case NETR_DELTA_GROUP_MEMBER:
311 case NETR_DELTA_ALIAS:
312 case NETR_DELTA_ALIAS_MEMBER:
313 e->object_rid = o->object_identifier.rid;
315 case NETR_DELTA_SECRET:
316 e->object.object_name = o->object_identifier.name;
317 e->flags = NETR_CHANGELOG_NAME_INCLUDED;
319 case NETR_DELTA_TRUSTED_DOMAIN:
320 case NETR_DELTA_ACCOUNT:
321 case NETR_DELTA_POLICY:
322 e->object.object_sid = o->object_identifier.sid;
323 e->flags = NETR_CHANGELOG_SID_INCLUDED;
331 * libnet_samsync_delta
334 static NTSTATUS libnet_samsync_delta(TALLOC_CTX *mem_ctx,
335 enum netr_SamDatabaseID database_id,
336 uint64_t *sequence_num,
337 struct samsync_context *ctx,
338 struct netr_ChangeLogEntry *e)
341 NTSTATUS callback_status;
342 const char *logon_server = ctx->cli->desthost;
343 const char *computername = global_myname();
344 struct netr_Authenticator credential;
345 struct netr_Authenticator return_authenticator;
346 uint16_t restart_state = 0;
347 uint32_t sync_context = 0;
348 DATA_BLOB session_key;
350 ZERO_STRUCT(return_authenticator);
353 struct netr_DELTA_ENUM_ARRAY *delta_enum_array = NULL;
355 netlogon_creds_client_step(ctx->cli->dc, &credential);
357 if (ctx->single_object_replication &&
358 !ctx->force_full_replication) {
359 result = rpccli_netr_DatabaseRedo(ctx->cli, mem_ctx,
363 &return_authenticator,
367 } else if (!ctx->force_full_replication &&
368 sequence_num && (*sequence_num > 0)) {
369 result = rpccli_netr_DatabaseDeltas(ctx->cli, mem_ctx,
373 &return_authenticator,
379 result = rpccli_netr_DatabaseSync2(ctx->cli, mem_ctx,
383 &return_authenticator,
391 if (NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED)) {
395 /* Check returned credentials. */
396 if (!netlogon_creds_client_check(ctx->cli->dc,
397 &return_authenticator.cred)) {
398 DEBUG(0,("credentials chain check failed\n"));
399 return NT_STATUS_ACCESS_DENIED;
402 if (NT_STATUS_IS_ERR(result)) {
406 session_key = data_blob_const(ctx->cli->dc->sess_key, 16);
408 samsync_fix_delta_array(mem_ctx,
413 /* Process results */
414 callback_status = ctx->ops->process_objects(mem_ctx, database_id,
418 if (!NT_STATUS_IS_OK(callback_status)) {
419 result = callback_status;
423 TALLOC_FREE(delta_enum_array);
425 /* Increment sync_context */
428 } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
439 NTSTATUS libnet_samsync(enum netr_SamDatabaseID database_id,
440 struct samsync_context *ctx)
442 NTSTATUS status = NT_STATUS_OK;
443 NTSTATUS callback_status;
445 const char *debug_str;
446 uint64_t sequence_num = 0;
449 if (!(mem_ctx = talloc_new(ctx))) {
450 return NT_STATUS_NO_MEMORY;
454 return NT_STATUS_INVALID_PARAMETER;
457 if (ctx->ops->startup) {
458 status = ctx->ops->startup(mem_ctx, ctx,
459 database_id, &sequence_num);
460 if (!NT_STATUS_IS_OK(status)) {
465 debug_str = samsync_debug_str(mem_ctx, ctx->mode, database_id);
467 d_fprintf(stderr, "%s\n", debug_str);
470 if (!ctx->single_object_replication) {
471 status = libnet_samsync_delta(mem_ctx, database_id,
472 &sequence_num, ctx, NULL);
476 for (i=0; i<ctx->num_objects; i++) {
478 struct netr_ChangeLogEntry e;
480 if (ctx->objects[i].database_id != database_id) {
484 libnet_init_netr_ChangeLogEntry(&ctx->objects[i], &e);
486 status = libnet_samsync_delta(mem_ctx, database_id,
487 &sequence_num, ctx, &e);
488 if (!NT_STATUS_IS_OK(status)) {
495 if (NT_STATUS_IS_OK(status) && ctx->ops->finish) {
496 callback_status = ctx->ops->finish(mem_ctx, ctx,
497 database_id, sequence_num);
498 if (!NT_STATUS_IS_OK(callback_status)) {
499 status = callback_status;
503 if (NT_STATUS_IS_ERR(status) && !ctx->error_message) {
505 ctx->error_message = talloc_asprintf(ctx,
506 "Failed to fetch %s database: %s",
507 samsync_database_str(database_id),
510 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
513 talloc_asprintf_append(ctx->error_message,
514 "\nPerhaps %s is a Windows native mode domain?",
519 talloc_destroy(mem_ctx);
525 * pull_netr_AcctLockStr
528 NTSTATUS pull_netr_AcctLockStr(TALLOC_CTX *mem_ctx,
529 struct lsa_BinaryString *r,
530 struct netr_AcctLockStr **str_p)
532 struct netr_AcctLockStr *str;
533 enum ndr_err_code ndr_err;
536 if (!mem_ctx || !r || !str_p) {
537 return NT_STATUS_INVALID_PARAMETER;
542 str = TALLOC_ZERO_P(mem_ctx, struct netr_AcctLockStr);
544 return NT_STATUS_NO_MEMORY;
547 blob = data_blob_const(r->array, r->length);
549 ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, NULL, str,
550 (ndr_pull_flags_fn_t)ndr_pull_netr_AcctLockStr);
552 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
553 return ndr_map_error2ntstatus(ndr_err);