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_samsync.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,
37 enum netr_SamDatabaseID database_id,
38 struct netr_DELTA_ENUM *delta)
41 uint32_t rid = delta->delta_id_union.rid;
42 struct netr_DELTA_USER *user = delta->delta_union.user;
43 struct samr_Password lm_hash;
44 struct samr_Password nt_hash;
47 if (user->lm_password_present) {
48 sam_pwd_hash(rid, user->lmpassword.hash, lm_hash.hash, 0);
49 user->lmpassword = lm_hash;
52 if (user->nt_password_present) {
53 sam_pwd_hash(rid, user->ntpassword.hash, nt_hash.hash, 0);
54 user->ntpassword = nt_hash;
58 if (user->user_private_info.SensitiveData) {
60 struct netr_USER_KEYS keys;
61 enum ndr_err_code ndr_err;
62 data.data = user->user_private_info.SensitiveData;
63 data.length = user->user_private_info.DataLength;
64 SamOEMhashBlob(data.data, data.length, session_key);
65 user->user_private_info.SensitiveData = data.data;
66 user->user_private_info.DataLength = data.length;
68 ndr_err = ndr_pull_struct_blob(&data, mem_ctx, &keys,
69 (ndr_pull_flags_fn_t)ndr_pull_netr_USER_KEYS);
70 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
71 dump_data(10, data.data, data.length);
72 return ndr_map_error2ntstatus(ndr_err);
75 if (keys.keys.keys2.lmpassword.length == 16) {
78 keys.keys.keys2.lmpassword.pwd.hash,
80 user->lmpassword = lm_hash;
82 user->lmpassword = keys.keys.keys2.lmpassword.pwd;
84 user->lm_password_present = true;
86 if (keys.keys.keys2.ntpassword.length == 16) {
89 keys.keys.keys2.ntpassword.pwd.hash,
91 user->ntpassword = nt_hash;
93 user->ntpassword = keys.keys.keys2.ntpassword.pwd;
95 user->nt_password_present = true;
97 /* TODO: rid decrypt history fields */
103 * Decrypt and extract the secrets
105 * The writes decrypted secrets back into the structure
107 static NTSTATUS fix_secret(TALLOC_CTX *mem_ctx,
108 DATA_BLOB *session_key,
109 enum netr_SamDatabaseID database_id,
110 struct netr_DELTA_ENUM *delta)
112 struct netr_DELTA_SECRET *secret = delta->delta_union.secret;
114 SamOEMhashBlob(secret->current_cipher.cipher_data,
115 secret->current_cipher.maxlen,
118 SamOEMhashBlob(secret->old_cipher.cipher_data,
119 secret->old_cipher.maxlen,
126 * Fix up the delta, dealing with encryption issues so that the final
127 * callback need only do the printing or application logic
130 static NTSTATUS samsync_fix_delta(TALLOC_CTX *mem_ctx,
131 DATA_BLOB *session_key,
133 enum netr_SamDatabaseID database_id,
134 struct netr_DELTA_ENUM *delta)
136 NTSTATUS status = NT_STATUS_OK;
138 switch (delta->delta_type) {
139 case NETR_DELTA_USER:
141 status = fix_user(mem_ctx,
147 case NETR_DELTA_SECRET:
149 status = fix_secret(mem_ctx,
162 * Fix up the delta, dealing with encryption issues so that the final
163 * callback need only do the printing or application logic
166 static NTSTATUS samsync_fix_delta_array(TALLOC_CTX *mem_ctx,
167 DATA_BLOB *session_key,
169 enum netr_SamDatabaseID database_id,
170 struct netr_DELTA_ENUM_ARRAY *r)
175 for (i = 0; i < r->num_deltas; i++) {
177 status = samsync_fix_delta(mem_ctx,
182 if (!NT_STATUS_IS_OK(status)) {
191 * libnet_samsync_init_context
194 NTSTATUS libnet_samsync_init_context(TALLOC_CTX *mem_ctx,
195 const struct dom_sid *domain_sid,
196 struct samsync_context **ctx_p)
198 struct samsync_context *ctx;
202 ctx = TALLOC_ZERO_P(mem_ctx, struct samsync_context);
203 NT_STATUS_HAVE_NO_MEMORY(ctx);
206 ctx->domain_sid = sid_dup_talloc(mem_ctx, domain_sid);
207 NT_STATUS_HAVE_NO_MEMORY(ctx->domain_sid);
209 ctx->domain_sid_str = sid_string_talloc(mem_ctx, ctx->domain_sid);
210 NT_STATUS_HAVE_NO_MEMORY(ctx->domain_sid_str);
219 * samsync_database_str
222 static const char *samsync_database_str(enum netr_SamDatabaseID database_id)
225 switch (database_id) {
226 case SAM_DATABASE_DOMAIN:
228 case SAM_DATABASE_BUILTIN:
230 case SAM_DATABASE_PRIVS:
241 static const char *samsync_debug_str(TALLOC_CTX *mem_ctx,
242 enum net_samsync_mode mode,
243 enum netr_SamDatabaseID database_id)
245 const char *action = NULL;
248 case NET_SAMSYNC_MODE_DUMP:
249 action = "Dumping (to stdout)";
251 case NET_SAMSYNC_MODE_FETCH_PASSDB:
252 action = "Fetching (to passdb)";
254 case NET_SAMSYNC_MODE_FETCH_LDIF:
255 action = "Fetching (to ldif)";
262 return talloc_asprintf(mem_ctx, "%s %s database",
263 action, samsync_database_str(database_id));
270 NTSTATUS libnet_samsync(enum netr_SamDatabaseID database_id,
271 struct samsync_context *ctx)
275 const char *logon_server = ctx->cli->desthost;
276 const char *computername = global_myname();
277 struct netr_Authenticator credential;
278 struct netr_Authenticator return_authenticator;
279 uint16_t restart_state = 0;
280 uint32_t sync_context = 0;
281 const char *debug_str;
282 DATA_BLOB session_key;
284 ZERO_STRUCT(return_authenticator);
286 if (!(mem_ctx = talloc_init("libnet_samsync"))) {
287 return NT_STATUS_NO_MEMORY;
290 debug_str = samsync_debug_str(mem_ctx, ctx->mode, database_id);
292 d_fprintf(stderr, "%s\n", debug_str);
296 struct netr_DELTA_ENUM_ARRAY *delta_enum_array = NULL;
297 NTSTATUS callback_status;
299 netlogon_creds_client_step(ctx->cli->dc, &credential);
301 result = rpccli_netr_DatabaseSync2(ctx->cli, mem_ctx,
305 &return_authenticator,
311 if (NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED)) {
315 /* Check returned credentials. */
316 if (!netlogon_creds_client_check(ctx->cli->dc,
317 &return_authenticator.cred)) {
318 DEBUG(0,("credentials chain check failed\n"));
319 return NT_STATUS_ACCESS_DENIED;
322 if (NT_STATUS_IS_ERR(result)) {
326 session_key = data_blob_const(ctx->cli->dc->sess_key, 16);
328 samsync_fix_delta_array(mem_ctx,
334 /* Process results */
335 callback_status = ctx->delta_fn(mem_ctx, database_id,
336 delta_enum_array, result, ctx);
337 if (!NT_STATUS_IS_OK(callback_status)) {
338 result = callback_status;
342 TALLOC_FREE(delta_enum_array);
344 /* Increment sync_context */
347 } while (NT_STATUS_EQUAL(result, STATUS_MORE_ENTRIES));
350 if (NT_STATUS_IS_ERR(result) && !ctx->error_message) {
352 ctx->error_message = talloc_asprintf(ctx,
353 "Failed to fetch %s database: %s",
354 samsync_database_str(database_id),
357 if (NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED)) {
360 talloc_asprintf_append(ctx->error_message,
361 "\nPerhaps %s is a Windows native mode domain?",
366 talloc_destroy(mem_ctx);
372 * pull_netr_AcctLockStr
375 NTSTATUS pull_netr_AcctLockStr(TALLOC_CTX *mem_ctx,
376 struct lsa_BinaryString *r,
377 struct netr_AcctLockStr **str_p)
379 struct netr_AcctLockStr *str;
380 enum ndr_err_code ndr_err;
383 if (!mem_ctx || !r || !str_p) {
384 return NT_STATUS_INVALID_PARAMETER;
389 str = TALLOC_ZERO_P(mem_ctx, struct netr_AcctLockStr);
391 return NT_STATUS_NO_MEMORY;
394 blob = data_blob_const(r->array, r->length);
396 ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, str,
397 (ndr_pull_flags_fn_t)ndr_pull_netr_AcctLockStr);
399 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
400 return ndr_map_error2ntstatus(ndr_err);