Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : Copyright (C) Stefan Metzmacher 2004
5 : Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
6 : Copyright (C) Brad Henry 2005
7 :
8 : This program is free software; you can redistribute it and/or modify
9 : it under the terms of the GNU General Public License as published by
10 : the Free Software Foundation; either version 3 of the License, or
11 : (at your option) any later version.
12 :
13 : This program is distributed in the hope that it will be useful,
14 : but WITHOUT ANY WARRANTY; without even the implied warranty of
15 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 : GNU General Public License for more details.
17 :
18 : You should have received a copy of the GNU General Public License
19 : along with this program. If not, see <http://www.gnu.org/licenses/>.
20 : */
21 :
22 : #include "includes.h"
23 : #include "libnet/libnet.h"
24 : #include "librpc/gen_ndr/ndr_drsuapi_c.h"
25 : #include <ldb.h>
26 : #include <ldb_errors.h>
27 : #include "dsdb/samdb/samdb.h"
28 : #include "ldb_wrap.h"
29 : #include "libcli/security/security.h"
30 : #include "auth/credentials/credentials.h"
31 : #include "auth/credentials/credentials_krb5.h"
32 : #include "librpc/gen_ndr/ndr_samr_c.h"
33 : #include "param/param.h"
34 : #include "param/provision.h"
35 : #include "system/kerberos.h"
36 : #include "auth/kerberos/kerberos.h"
37 :
38 : /*
39 : * complete a domain join, when joining to a AD domain:
40 : * 1.) connect and bind to the DRSUAPI pipe
41 : * 2.) do a DsCrackNames() to find the machine account dn
42 : * 3.) connect to LDAP
43 : * 4.) do an ldap search to find the "msDS-KeyVersionNumber" of the machine account
44 : * 5.) set the servicePrincipalName's of the machine account via LDAP, (maybe we should use DsWriteAccountSpn()...)
45 : * 6.) do a DsCrackNames() to find the domain dn
46 : * 7.) find out Site specific stuff, look at libnet_JoinSite() for details
47 : */
48 507 : static NTSTATUS libnet_JoinADSDomain(struct libnet_context *ctx, struct libnet_JoinDomain *r)
49 : {
50 403 : NTSTATUS status;
51 :
52 403 : TALLOC_CTX *tmp_ctx;
53 :
54 507 : const char *realm = r->out.realm;
55 :
56 507 : const struct dcerpc_binding *samr_binding = r->out.samr_binding;
57 :
58 403 : struct dcerpc_pipe *drsuapi_pipe;
59 403 : struct dcerpc_binding *drsuapi_binding;
60 403 : enum dcerpc_transport_t transport;
61 403 : struct drsuapi_DsBind r_drsuapi_bind;
62 403 : struct drsuapi_DsCrackNames r_crack_names;
63 403 : struct drsuapi_DsNameString names[1];
64 403 : struct policy_handle drsuapi_bind_handle;
65 403 : struct GUID drsuapi_bind_guid;
66 :
67 403 : struct ldb_context *remote_ldb;
68 403 : struct ldb_dn *account_dn;
69 403 : const char *account_dn_str;
70 403 : const char *remote_ldb_url;
71 403 : struct ldb_result *res;
72 403 : struct ldb_message *msg;
73 :
74 403 : int ret, rtn;
75 :
76 507 : const char * const attrs[] = {
77 : "msDS-KeyVersionNumber",
78 : "servicePrincipalName",
79 : "dNSHostName",
80 : "objectGUID",
81 : NULL,
82 : };
83 :
84 507 : r->out.error_string = NULL;
85 :
86 : /* We need to convert between a samAccountName and domain to a
87 : * DN in the directory. The correct way to do this is with
88 : * DRSUAPI CrackNames */
89 :
90 : /* Fiddle with the bindings, so get to DRSUAPI on
91 : * NCACN_IP_TCP, sealed */
92 507 : tmp_ctx = talloc_named(r, 0, "libnet_JoinADSDomain temp context");
93 507 : if (!tmp_ctx) {
94 0 : r->out.error_string = NULL;
95 0 : return NT_STATUS_NO_MEMORY;
96 : }
97 :
98 507 : drsuapi_binding = dcerpc_binding_dup(tmp_ctx, samr_binding);
99 507 : if (!drsuapi_binding) {
100 0 : r->out.error_string = NULL;
101 0 : talloc_free(tmp_ctx);
102 0 : return NT_STATUS_NO_MEMORY;
103 : }
104 :
105 507 : transport = dcerpc_binding_get_transport(drsuapi_binding);
106 :
107 : /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
108 507 : if (transport != NCALRPC) {
109 447 : status = dcerpc_binding_set_transport(drsuapi_binding, NCACN_IP_TCP);
110 447 : if (!NT_STATUS_IS_OK(status)) {
111 0 : r->out.error_string = talloc_asprintf(r,
112 : "dcerpc_binding_set_transport failed: %s",
113 : nt_errstr(status));
114 0 : talloc_free(tmp_ctx);
115 0 : return status;
116 : }
117 : }
118 :
119 507 : status = dcerpc_binding_set_string_option(drsuapi_binding, "endpoint", NULL);
120 507 : if (!NT_STATUS_IS_OK(status)) {
121 0 : r->out.error_string = talloc_asprintf(r,
122 : "dcerpc_binding_set_string_option failed: %s",
123 : nt_errstr(status));
124 0 : talloc_free(tmp_ctx);
125 0 : return status;
126 : }
127 :
128 507 : status = dcerpc_binding_set_flags(drsuapi_binding, DCERPC_SEAL, 0);
129 507 : if (!NT_STATUS_IS_OK(status)) {
130 0 : r->out.error_string = talloc_asprintf(r,
131 : "dcerpc_binding_set_flags failed: %s",
132 : nt_errstr(status));
133 0 : talloc_free(tmp_ctx);
134 0 : return status;
135 : }
136 :
137 507 : status = dcerpc_pipe_connect_b(tmp_ctx,
138 : &drsuapi_pipe,
139 : drsuapi_binding,
140 : &ndr_table_drsuapi,
141 : ctx->cred,
142 : ctx->event_ctx,
143 : ctx->lp_ctx);
144 507 : if (!NT_STATUS_IS_OK(status)) {
145 0 : r->out.error_string = talloc_asprintf(r,
146 : "Connection to DRSUAPI pipe of PDC of domain '%s' failed: %s",
147 : r->out.domain_name,
148 : nt_errstr(status));
149 0 : talloc_free(tmp_ctx);
150 0 : return status;
151 : }
152 :
153 : /* get a DRSUAPI pipe handle */
154 507 : GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
155 :
156 507 : r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
157 507 : r_drsuapi_bind.in.bind_info = NULL;
158 507 : r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
159 :
160 507 : status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
161 507 : if (!NT_STATUS_IS_OK(status)) {
162 0 : r->out.error_string
163 0 : = talloc_asprintf(r,
164 : "dcerpc_drsuapi_DsBind failed - %s",
165 : nt_errstr(status));
166 0 : talloc_free(tmp_ctx);
167 0 : return status;
168 507 : } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
169 0 : r->out.error_string
170 0 : = talloc_asprintf(r,
171 : "DsBind failed - %s",
172 : win_errstr(r_drsuapi_bind.out.result));
173 0 : talloc_free(tmp_ctx);
174 0 : return NT_STATUS_UNSUCCESSFUL;
175 : }
176 :
177 : /* Actually 'crack' the names */
178 507 : ZERO_STRUCT(r_crack_names);
179 507 : r_crack_names.in.bind_handle = &drsuapi_bind_handle;
180 507 : r_crack_names.in.level = 1;
181 507 : r_crack_names.in.req = talloc(r, union drsuapi_DsNameRequest);
182 507 : if (!r_crack_names.in.req) {
183 0 : r->out.error_string = NULL;
184 0 : talloc_free(tmp_ctx);
185 0 : return NT_STATUS_NO_MEMORY;
186 : }
187 507 : r_crack_names.in.req->req1.codepage = 1252; /* western european */
188 507 : r_crack_names.in.req->req1.language = 0x00000407; /* german */
189 507 : r_crack_names.in.req->req1.count = 1;
190 507 : r_crack_names.in.req->req1.names = names;
191 507 : r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
192 507 : r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
193 507 : r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
194 507 : names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
195 507 : if (!names[0].str) {
196 0 : r->out.error_string = NULL;
197 0 : talloc_free(tmp_ctx);
198 0 : return NT_STATUS_NO_MEMORY;
199 : }
200 :
201 507 : r_crack_names.out.ctr = talloc(r, union drsuapi_DsNameCtr);
202 507 : r_crack_names.out.level_out = talloc(r, uint32_t);
203 507 : if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
204 0 : r->out.error_string = NULL;
205 0 : talloc_free(tmp_ctx);
206 0 : return NT_STATUS_NO_MEMORY;
207 : }
208 :
209 507 : status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
210 507 : if (!NT_STATUS_IS_OK(status)) {
211 0 : r->out.error_string
212 0 : = talloc_asprintf(r,
213 : "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
214 : names[0].str,
215 : nt_errstr(status));
216 0 : talloc_free(tmp_ctx);
217 0 : return status;
218 507 : } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
219 0 : r->out.error_string
220 0 : = talloc_asprintf(r,
221 : "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
222 0 : talloc_free(tmp_ctx);
223 0 : return NT_STATUS_UNSUCCESSFUL;
224 507 : } else if (*r_crack_names.out.level_out != 1
225 507 : || !r_crack_names.out.ctr->ctr1
226 507 : || r_crack_names.out.ctr->ctr1->count != 1) {
227 0 : r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
228 0 : talloc_free(tmp_ctx);
229 0 : return NT_STATUS_INVALID_PARAMETER;
230 507 : } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
231 0 : r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
232 0 : talloc_free(tmp_ctx);
233 0 : return NT_STATUS_UNSUCCESSFUL;
234 507 : } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
235 0 : r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
236 0 : talloc_free(tmp_ctx);
237 0 : return NT_STATUS_INVALID_PARAMETER;
238 : }
239 :
240 : /* Store the DN of our machine account. */
241 507 : account_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
242 :
243 : /* Now we know the user's DN, open with LDAP, read and modify a few things */
244 :
245 507 : remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
246 : dcerpc_binding_get_string_option(drsuapi_binding, "target_hostname"));
247 507 : if (!remote_ldb_url) {
248 0 : r->out.error_string = NULL;
249 0 : talloc_free(tmp_ctx);
250 0 : return NT_STATUS_NO_MEMORY;
251 : }
252 :
253 507 : remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
254 : remote_ldb_url,
255 : NULL, ctx->cred, 0);
256 507 : if (!remote_ldb) {
257 0 : r->out.error_string = NULL;
258 0 : talloc_free(tmp_ctx);
259 0 : return NT_STATUS_UNSUCCESSFUL;
260 : }
261 :
262 507 : account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
263 507 : if (account_dn == NULL) {
264 0 : r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
265 : account_dn_str);
266 0 : talloc_free(tmp_ctx);
267 0 : return NT_STATUS_UNSUCCESSFUL;
268 : }
269 :
270 : /* search for the user's record */
271 507 : ret = ldb_search(remote_ldb, tmp_ctx, &res,
272 : account_dn, LDB_SCOPE_BASE, attrs, NULL);
273 507 : if (ret != LDB_SUCCESS) {
274 0 : r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
275 : account_dn_str, ldb_errstring(remote_ldb));
276 0 : talloc_free(tmp_ctx);
277 0 : return NT_STATUS_UNSUCCESSFUL;
278 : }
279 :
280 507 : if (res->count != 1) {
281 0 : r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
282 0 : account_dn_str, res->count);
283 0 : talloc_free(tmp_ctx);
284 0 : return NT_STATUS_UNSUCCESSFUL;
285 : }
286 :
287 : /* Prepare a new message, for the modify */
288 507 : msg = ldb_msg_new(tmp_ctx);
289 507 : if (!msg) {
290 0 : r->out.error_string = NULL;
291 0 : talloc_free(tmp_ctx);
292 0 : return NT_STATUS_NO_MEMORY;
293 : }
294 507 : msg->dn = res->msgs[0]->dn;
295 :
296 : {
297 403 : unsigned int i;
298 403 : const char *service_principal_name[2];
299 611 : const char *dns_host_name = strlower_talloc(msg,
300 507 : talloc_asprintf(msg,
301 : "%s.%s",
302 : r->in.netbios_name,
303 : realm));
304 :
305 507 : if (!dns_host_name) {
306 0 : r->out.error_string = NULL;
307 0 : talloc_free(tmp_ctx);
308 0 : return NT_STATUS_NO_MEMORY;
309 : }
310 :
311 507 : service_principal_name[0] = talloc_asprintf(msg, "HOST/%s",
312 : dns_host_name);
313 507 : service_principal_name[1] = talloc_asprintf(msg, "HOST/%s",
314 : r->in.netbios_name);
315 :
316 1521 : for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
317 1014 : if (!service_principal_name[i]) {
318 0 : r->out.error_string = NULL;
319 0 : talloc_free(tmp_ctx);
320 0 : return NT_STATUS_NO_MEMORY;
321 : }
322 1014 : rtn = ldb_msg_add_string(msg, "servicePrincipalName",
323 : service_principal_name[i]);
324 1014 : if (rtn != LDB_SUCCESS) {
325 0 : r->out.error_string = NULL;
326 0 : talloc_free(tmp_ctx);
327 0 : return NT_STATUS_NO_MEMORY;
328 : }
329 : }
330 :
331 507 : rtn = ldb_msg_add_string(msg, "dNSHostName", dns_host_name);
332 507 : if (rtn != LDB_SUCCESS) {
333 0 : r->out.error_string = NULL;
334 0 : talloc_free(tmp_ctx);
335 0 : return NT_STATUS_NO_MEMORY;
336 : }
337 :
338 507 : rtn = dsdb_replace(remote_ldb, msg, 0);
339 507 : if (rtn != LDB_SUCCESS) {
340 0 : r->out.error_string
341 0 : = talloc_asprintf(r,
342 : "Failed to replace entries on %s",
343 : ldb_dn_get_linearized(msg->dn));
344 0 : talloc_free(tmp_ctx);
345 0 : return NT_STATUS_INTERNAL_DB_CORRUPTION;
346 : }
347 : }
348 :
349 507 : msg = ldb_msg_new(tmp_ctx);
350 507 : if (!msg) {
351 0 : r->out.error_string = NULL;
352 0 : talloc_free(tmp_ctx);
353 0 : return NT_STATUS_NO_MEMORY;
354 : }
355 507 : msg->dn = res->msgs[0]->dn;
356 :
357 507 : rtn = samdb_msg_add_uint(remote_ldb, msg, msg,
358 : "msDS-SupportedEncryptionTypes", ENC_ALL_TYPES);
359 507 : if (rtn != LDB_SUCCESS) {
360 0 : r->out.error_string = NULL;
361 0 : talloc_free(tmp_ctx);
362 0 : return NT_STATUS_NO_MEMORY;
363 : }
364 :
365 507 : rtn = dsdb_replace(remote_ldb, msg, 0);
366 : /* The remote server may not support this attribute, if it
367 : * isn't a modern schema */
368 507 : if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
369 0 : r->out.error_string
370 0 : = talloc_asprintf(r,
371 : "Failed to replace msDS-SupportedEncryptionTypes on %s",
372 : ldb_dn_get_linearized(msg->dn));
373 0 : talloc_free(tmp_ctx);
374 0 : return NT_STATUS_INTERNAL_DB_CORRUPTION;
375 : }
376 :
377 : /* DsCrackNames to find out the DN of the domain. */
378 507 : r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
379 507 : r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
380 507 : names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
381 507 : if (!names[0].str) {
382 0 : r->out.error_string = NULL;
383 0 : talloc_free(tmp_ctx);
384 0 : return NT_STATUS_NO_MEMORY;
385 : }
386 :
387 507 : status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
388 507 : if (!NT_STATUS_IS_OK(status)) {
389 0 : r->out.error_string
390 0 : = talloc_asprintf(r,
391 : "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
392 : r->in.domain_name,
393 : nt_errstr(status));
394 0 : talloc_free(tmp_ctx);
395 0 : return status;
396 507 : } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
397 0 : r->out.error_string
398 0 : = talloc_asprintf(r,
399 : "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
400 0 : talloc_free(tmp_ctx);
401 0 : return NT_STATUS_UNSUCCESSFUL;
402 507 : } else if (*r_crack_names.out.level_out != 1
403 507 : || !r_crack_names.out.ctr->ctr1
404 507 : || r_crack_names.out.ctr->ctr1->count != 1
405 507 : || !r_crack_names.out.ctr->ctr1->array[0].result_name
406 507 : || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
407 0 : r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
408 0 : talloc_free(tmp_ctx);
409 0 : return NT_STATUS_UNSUCCESSFUL;
410 : }
411 :
412 : /* Store the account DN. */
413 507 : r->out.account_dn_str = account_dn_str;
414 507 : talloc_steal(r, account_dn_str);
415 :
416 : /* Store the domain DN. */
417 507 : r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
418 507 : talloc_steal(r, r_crack_names.out.ctr->ctr1->array[0].result_name);
419 :
420 : /* Store the KVNO of the account, critical for some kerberos
421 : * operations */
422 507 : r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
423 :
424 : /* Store the account GUID. */
425 507 : r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
426 :
427 507 : if (r->in.acct_type == ACB_SVRTRUST) {
428 239 : status = libnet_JoinSite(ctx, remote_ldb, r);
429 : }
430 507 : talloc_free(tmp_ctx);
431 :
432 507 : return status;
433 : }
434 :
435 : /*
436 : * do a domain join using DCERPC/SAMR calls
437 : * - connect to the LSA pipe, to try and find out information about the domain
438 : * - create a secondary connection to SAMR pipe
439 : * - do a samr_Connect to get a policy handle
440 : * - do a samr_LookupDomain to get the domain sid
441 : * - do a samr_OpenDomain to get a domain handle
442 : * - do a samr_CreateAccount to try and get a new account
443 : *
444 : * If that fails, do:
445 : * - do a samr_LookupNames to get the users rid
446 : * - do a samr_OpenUser to get a user handle
447 : * - potentially delete and recreate the user
448 : * - assert the account is of the right type with samrQueryUserInfo
449 : *
450 : * - call libnet_SetPassword_samr_handle to set the password,
451 : * and pass a samr_UserInfo21 struct to set full_name and the account flags
452 : *
453 : * - do some ADS specific things when we join as Domain Controller,
454 : * look at libnet_joinADSDomain() for the details
455 : */
456 559 : NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
457 : {
458 454 : TALLOC_CTX *tmp_ctx;
459 :
460 454 : NTSTATUS status, cu_status;
461 :
462 454 : struct libnet_RpcConnect *connect_with_info;
463 454 : struct dcerpc_pipe *samr_pipe;
464 :
465 454 : struct samr_Connect sc;
466 454 : struct policy_handle p_handle;
467 454 : struct samr_OpenDomain od;
468 454 : struct policy_handle d_handle;
469 454 : struct samr_LookupNames ln;
470 454 : struct samr_Ids rids, types;
471 454 : struct samr_OpenUser ou;
472 454 : struct samr_CreateUser2 cu;
473 559 : struct policy_handle *u_handle = NULL;
474 454 : struct samr_QueryUserInfo qui;
475 454 : union samr_UserInfo *uinfo;
476 454 : struct samr_UserInfo21 u_info21;
477 454 : union libnet_SetPassword r2;
478 454 : struct samr_GetUserPwInfo pwp;
479 454 : struct samr_PwInfo info;
480 454 : struct lsa_String samr_account_name;
481 :
482 454 : uint32_t acct_flags, old_acct_flags;
483 454 : uint32_t rid, access_granted;
484 559 : int policy_min_pw_len = 0;
485 :
486 559 : struct dom_sid *account_sid = NULL;
487 559 : const char *password_str = NULL;
488 :
489 559 : r->out.error_string = NULL;
490 559 : ZERO_STRUCT(r2);
491 :
492 559 : tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
493 559 : if (!tmp_ctx) {
494 0 : r->out.error_string = NULL;
495 0 : return NT_STATUS_NO_MEMORY;
496 : }
497 :
498 559 : u_handle = talloc(tmp_ctx, struct policy_handle);
499 559 : if (!u_handle) {
500 0 : r->out.error_string = NULL;
501 0 : talloc_free(tmp_ctx);
502 0 : return NT_STATUS_NO_MEMORY;
503 : }
504 :
505 559 : connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
506 559 : if (!connect_with_info) {
507 0 : r->out.error_string = NULL;
508 0 : talloc_free(tmp_ctx);
509 0 : return NT_STATUS_NO_MEMORY;
510 : }
511 :
512 : /* prepare connect to the SAMR pipe of PDC */
513 559 : if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
514 13 : connect_with_info->in.binding = NULL;
515 13 : connect_with_info->in.name = r->in.domain_name;
516 : } else {
517 546 : connect_with_info->in.binding = r->in.binding;
518 546 : connect_with_info->in.name = NULL;
519 : }
520 :
521 : /* This level makes a connection to the LSA pipe on the way,
522 : * to get some useful bits of information about the domain */
523 559 : connect_with_info->level = LIBNET_RPC_CONNECT_DC_INFO;
524 559 : connect_with_info->in.dcerpc_iface = &ndr_table_samr;
525 :
526 : /*
527 : establish the SAMR connection
528 : */
529 559 : status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
530 559 : if (!NT_STATUS_IS_OK(status)) {
531 2 : if (r->in.binding) {
532 0 : r->out.error_string = talloc_asprintf(mem_ctx,
533 : "Connection to SAMR pipe of DC %s failed: %s",
534 : r->in.binding, connect_with_info->out.error_string);
535 : } else {
536 2 : r->out.error_string = talloc_asprintf(mem_ctx,
537 : "Connection to SAMR pipe of PDC for %s failed: %s",
538 : r->in.domain_name, connect_with_info->out.error_string);
539 : }
540 2 : talloc_free(tmp_ctx);
541 2 : return status;
542 : }
543 :
544 557 : samr_pipe = connect_with_info->out.dcerpc_pipe;
545 :
546 : /* prepare samr_Connect */
547 557 : ZERO_STRUCT(p_handle);
548 557 : sc.in.system_name = NULL;
549 557 : sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
550 557 : sc.out.connect_handle = &p_handle;
551 :
552 : /* 2. do a samr_Connect to get a policy handle */
553 557 : status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
554 557 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
555 0 : status = sc.out.result;
556 : }
557 557 : if (!NT_STATUS_IS_OK(status)) {
558 0 : r->out.error_string = talloc_asprintf(mem_ctx,
559 : "samr_Connect failed: %s",
560 : nt_errstr(status));
561 0 : talloc_free(tmp_ctx);
562 0 : return status;
563 : }
564 :
565 : /* If this is a connection on ncacn_ip_tcp to Win2k3 SP1, we don't get back this useful info */
566 557 : if (!connect_with_info->out.domain_name) {
567 0 : if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
568 0 : connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, r->in.domain_name);
569 : } else {
570 : /* Bugger, we just lost our way to automatically find the domain name */
571 0 : connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
572 0 : connect_with_info->out.realm = talloc_strdup(tmp_ctx, lpcfg_realm(ctx->lp_ctx));
573 : }
574 : }
575 :
576 : /* Perhaps we didn't get a SID above, because we are against ncacn_ip_tcp */
577 557 : if (!connect_with_info->out.domain_sid) {
578 0 : struct lsa_String name;
579 0 : struct samr_LookupDomain l;
580 0 : struct dom_sid2 *sid = NULL;
581 0 : name.string = connect_with_info->out.domain_name;
582 0 : l.in.connect_handle = &p_handle;
583 0 : l.in.domain_name = &name;
584 0 : l.out.sid = &sid;
585 :
586 0 : status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
587 0 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
588 0 : status = l.out.result;
589 : }
590 0 : if (!NT_STATUS_IS_OK(status)) {
591 0 : r->out.error_string = talloc_asprintf(mem_ctx,
592 : "SAMR LookupDomain failed: %s",
593 : nt_errstr(status));
594 0 : talloc_free(tmp_ctx);
595 0 : return status;
596 : }
597 0 : connect_with_info->out.domain_sid = *l.out.sid;
598 : }
599 :
600 : /* prepare samr_OpenDomain */
601 557 : ZERO_STRUCT(d_handle);
602 557 : od.in.connect_handle = &p_handle;
603 557 : od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
604 557 : od.in.sid = connect_with_info->out.domain_sid;
605 557 : od.out.domain_handle = &d_handle;
606 :
607 : /* do a samr_OpenDomain to get a domain handle */
608 557 : status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
609 557 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
610 0 : status = od.out.result;
611 : }
612 557 : if (!NT_STATUS_IS_OK(status)) {
613 0 : struct dom_sid_buf buf;
614 0 : r->out.error_string = talloc_asprintf(
615 : mem_ctx,
616 : "samr_OpenDomain for [%s] failed: %s",
617 0 : dom_sid_str_buf(connect_with_info->out.domain_sid,
618 : &buf),
619 : nt_errstr(status));
620 0 : talloc_free(tmp_ctx);
621 0 : return status;
622 : }
623 :
624 : /* prepare samr_CreateUser2 */
625 557 : ZERO_STRUCTP(u_handle);
626 557 : cu.in.domain_handle = &d_handle;
627 557 : cu.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
628 557 : samr_account_name.string = r->in.account_name;
629 557 : cu.in.account_name = &samr_account_name;
630 557 : cu.in.acct_flags = r->in.acct_type;
631 557 : cu.out.user_handle = u_handle;
632 557 : cu.out.rid = &rid;
633 557 : cu.out.access_granted = &access_granted;
634 :
635 : /* do a samr_CreateUser2 to get an account handle, or an error */
636 557 : cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
637 557 : if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
638 0 : cu_status = cu.out.result;
639 : }
640 557 : status = cu_status;
641 557 : if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
642 : /* prepare samr_LookupNames */
643 0 : ln.in.domain_handle = &d_handle;
644 0 : ln.in.num_names = 1;
645 0 : ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
646 0 : ln.out.rids = &rids;
647 0 : ln.out.types = &types;
648 0 : if (!ln.in.names) {
649 0 : r->out.error_string = NULL;
650 0 : talloc_free(tmp_ctx);
651 0 : return NT_STATUS_NO_MEMORY;
652 : }
653 0 : ln.in.names[0].string = r->in.account_name;
654 :
655 : /* 5. do a samr_LookupNames to get the users rid */
656 0 : status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
657 0 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
658 0 : status = ln.out.result;
659 : }
660 0 : if (!NT_STATUS_IS_OK(status)) {
661 0 : r->out.error_string = talloc_asprintf(mem_ctx,
662 : "samr_LookupNames for [%s] failed: %s",
663 : r->in.account_name,
664 : nt_errstr(status));
665 0 : talloc_free(tmp_ctx);
666 0 : return status;
667 : }
668 :
669 : /* check if we got one RID for the user */
670 0 : if (ln.out.rids->count != 1) {
671 0 : r->out.error_string = talloc_asprintf(mem_ctx,
672 : "samr_LookupNames for [%s] returns %d RIDs",
673 0 : r->in.account_name, ln.out.rids->count);
674 0 : talloc_free(tmp_ctx);
675 0 : return NT_STATUS_INVALID_NETWORK_RESPONSE;
676 : }
677 :
678 0 : if (ln.out.types->count != 1) {
679 0 : r->out.error_string = talloc_asprintf(mem_ctx,
680 : "samr_LookupNames for [%s] returns %d RID TYPEs",
681 0 : r->in.account_name, ln.out.types->count);
682 0 : talloc_free(tmp_ctx);
683 0 : return NT_STATUS_INVALID_NETWORK_RESPONSE;
684 : }
685 :
686 : /* prepare samr_OpenUser */
687 0 : ZERO_STRUCTP(u_handle);
688 0 : ou.in.domain_handle = &d_handle;
689 0 : ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
690 0 : ou.in.rid = ln.out.rids->ids[0];
691 0 : rid = ou.in.rid;
692 0 : ou.out.user_handle = u_handle;
693 :
694 : /* 6. do a samr_OpenUser to get a user handle */
695 0 : status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
696 0 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
697 0 : status = ou.out.result;
698 : }
699 0 : if (!NT_STATUS_IS_OK(status)) {
700 0 : r->out.error_string = talloc_asprintf(mem_ctx,
701 : "samr_OpenUser for [%s] failed: %s",
702 : r->in.account_name,
703 : nt_errstr(status));
704 0 : talloc_free(tmp_ctx);
705 0 : return status;
706 : }
707 :
708 0 : if (r->in.recreate_account) {
709 0 : struct samr_DeleteUser d;
710 0 : d.in.user_handle = u_handle;
711 0 : d.out.user_handle = u_handle;
712 0 : status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
713 0 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
714 0 : status = d.out.result;
715 : }
716 0 : if (!NT_STATUS_IS_OK(status)) {
717 0 : r->out.error_string = talloc_asprintf(mem_ctx,
718 : "samr_DeleteUser (for recreate) of [%s] failed: %s",
719 : r->in.account_name,
720 : nt_errstr(status));
721 0 : talloc_free(tmp_ctx);
722 0 : return status;
723 : }
724 :
725 : /* We want to recreate, so delete and another samr_CreateUser2 */
726 :
727 : /* &cu filled in above */
728 0 : status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
729 0 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
730 0 : status = cu.out.result;
731 : }
732 0 : if (!NT_STATUS_IS_OK(status)) {
733 0 : r->out.error_string = talloc_asprintf(mem_ctx,
734 : "samr_CreateUser2 (recreate) for [%s] failed: %s",
735 : r->in.account_name, nt_errstr(status));
736 0 : talloc_free(tmp_ctx);
737 0 : return status;
738 : }
739 : }
740 557 : } else if (!NT_STATUS_IS_OK(status)) {
741 0 : r->out.error_string = talloc_asprintf(mem_ctx,
742 : "samr_CreateUser2 for [%s] failed: %s",
743 : r->in.account_name, nt_errstr(status));
744 0 : talloc_free(tmp_ctx);
745 0 : return status;
746 : }
747 :
748 : /* prepare samr_QueryUserInfo (get flags) */
749 557 : qui.in.user_handle = u_handle;
750 557 : qui.in.level = 16;
751 557 : qui.out.info = &uinfo;
752 :
753 557 : status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
754 557 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
755 0 : status = qui.out.result;
756 : }
757 557 : if (!NT_STATUS_IS_OK(status)) {
758 0 : r->out.error_string = talloc_asprintf(mem_ctx,
759 : "samr_QueryUserInfo for [%s] failed: %s",
760 : r->in.account_name,
761 : nt_errstr(status));
762 0 : talloc_free(tmp_ctx);
763 0 : return status;
764 : }
765 :
766 557 : if (!uinfo) {
767 0 : status = NT_STATUS_INVALID_PARAMETER;
768 0 : r->out.error_string
769 0 : = talloc_asprintf(mem_ctx,
770 : "samr_QueryUserInfo failed to return qui.out.info for [%s]: %s",
771 : r->in.account_name, nt_errstr(status));
772 0 : talloc_free(tmp_ctx);
773 0 : return status;
774 : }
775 :
776 557 : old_acct_flags = (uinfo->info16.acct_flags & (ACB_WSTRUST | ACB_SVRTRUST | ACB_DOMTRUST));
777 : /* Possibly bail if the account is of the wrong type */
778 557 : if (old_acct_flags
779 557 : != r->in.acct_type) {
780 0 : const char *old_account_type, *new_account_type;
781 0 : switch (old_acct_flags) {
782 0 : case ACB_WSTRUST:
783 0 : old_account_type = "domain member (member)";
784 0 : break;
785 0 : case ACB_SVRTRUST:
786 0 : old_account_type = "domain controller (bdc)";
787 0 : break;
788 0 : case ACB_DOMTRUST:
789 0 : old_account_type = "trusted domain";
790 0 : break;
791 0 : default:
792 0 : return NT_STATUS_INVALID_PARAMETER;
793 : }
794 0 : switch (r->in.acct_type) {
795 0 : case ACB_WSTRUST:
796 0 : new_account_type = "domain member (member)";
797 0 : break;
798 0 : case ACB_SVRTRUST:
799 0 : new_account_type = "domain controller (bdc)";
800 0 : break;
801 0 : case ACB_DOMTRUST:
802 0 : new_account_type = "trusted domain";
803 0 : break;
804 0 : default:
805 0 : return NT_STATUS_INVALID_PARAMETER;
806 : }
807 :
808 0 : if (!NT_STATUS_EQUAL(cu_status, NT_STATUS_USER_EXISTS)) {
809 : /* We created a new user, but they didn't come out the right type?!? */
810 0 : r->out.error_string
811 0 : = talloc_asprintf(mem_ctx,
812 : "We asked to create a new machine account (%s) of type %s, "
813 : "but we got an account of type %s. This is unexpected. "
814 : "Perhaps delete the account and try again.",
815 : r->in.account_name, new_account_type, old_account_type);
816 0 : talloc_free(tmp_ctx);
817 0 : return NT_STATUS_INVALID_PARAMETER;
818 : } else {
819 : /* The account is of the wrong type, so bail */
820 :
821 : /* TODO: We should allow a --force option to override, and redo this from the top setting r.in.recreate_account */
822 0 : r->out.error_string
823 0 : = talloc_asprintf(mem_ctx,
824 : "The machine account (%s) already exists in the domain %s, "
825 : "but is a %s. You asked to join as a %s. Please delete "
826 : "the account and try again.",
827 : r->in.account_name, connect_with_info->out.domain_name, old_account_type, new_account_type);
828 0 : talloc_free(tmp_ctx);
829 0 : return NT_STATUS_USER_EXISTS;
830 : }
831 : } else {
832 557 : acct_flags = uinfo->info16.acct_flags;
833 : }
834 :
835 557 : acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
836 :
837 : /* Find out what password policy this user has */
838 557 : pwp.in.user_handle = u_handle;
839 557 : pwp.out.info = &info;
840 :
841 557 : status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
842 557 : if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
843 0 : status = pwp.out.result;
844 : }
845 557 : if (NT_STATUS_IS_OK(status)) {
846 557 : policy_min_pw_len = pwp.out.info->min_password_length;
847 : }
848 :
849 557 : if (r->in.account_pass != NULL) {
850 11 : password_str = talloc_strdup(tmp_ctx, r->in.account_pass);
851 : } else {
852 : /* Grab a password of that minimum length */
853 546 : password_str = generate_random_password(tmp_ctx,
854 546 : MAX(8, policy_min_pw_len), 255);
855 : }
856 557 : if (!password_str) {
857 0 : r->out.error_string = NULL;
858 0 : talloc_free(tmp_ctx);
859 0 : return NT_STATUS_NO_MEMORY;
860 : }
861 :
862 : /* set full_name and reset flags */
863 557 : ZERO_STRUCT(u_info21);
864 557 : u_info21.full_name.string = r->in.account_name;
865 557 : u_info21.acct_flags = acct_flags;
866 557 : u_info21.fields_present = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
867 :
868 557 : r2.samr_handle.level = LIBNET_SET_PASSWORD_SAMR_HANDLE;
869 557 : r2.samr_handle.in.account_name = r->in.account_name;
870 557 : r2.samr_handle.in.newpassword = password_str;
871 557 : r2.samr_handle.in.user_handle = u_handle;
872 557 : r2.samr_handle.in.dcerpc_pipe = samr_pipe;
873 557 : r2.samr_handle.in.info21 = &u_info21;
874 :
875 557 : status = libnet_SetPassword(ctx, tmp_ctx, &r2);
876 557 : if (!NT_STATUS_IS_OK(status)) {
877 0 : r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
878 0 : talloc_free(tmp_ctx);
879 0 : return status;
880 : }
881 :
882 557 : account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
883 557 : if (!account_sid) {
884 0 : r->out.error_string = NULL;
885 0 : talloc_free(tmp_ctx);
886 0 : return NT_STATUS_NO_MEMORY;
887 : }
888 :
889 : /* Finish out by pushing various bits of status data out for the caller to use */
890 557 : r->out.join_password = password_str;
891 557 : talloc_steal(mem_ctx, r->out.join_password);
892 :
893 557 : r->out.domain_sid = connect_with_info->out.domain_sid;
894 557 : talloc_steal(mem_ctx, r->out.domain_sid);
895 :
896 557 : r->out.account_sid = account_sid;
897 557 : talloc_steal(mem_ctx, r->out.account_sid);
898 :
899 557 : r->out.domain_name = connect_with_info->out.domain_name;
900 557 : talloc_steal(mem_ctx, r->out.domain_name);
901 557 : r->out.realm = connect_with_info->out.realm;
902 557 : talloc_steal(mem_ctx, r->out.realm);
903 557 : r->out.samr_pipe = samr_pipe;
904 557 : talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
905 557 : r->out.samr_binding = samr_pipe->binding;
906 557 : r->out.user_handle = u_handle;
907 557 : talloc_steal(mem_ctx, u_handle);
908 557 : r->out.error_string = r2.samr_handle.out.error_string;
909 557 : talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
910 557 : r->out.kvno = 0;
911 557 : r->out.server_dn_str = NULL;
912 557 : talloc_free(tmp_ctx);
913 :
914 : /* Now, if it was AD, then we want to start looking changing a
915 : * few more things. Otherwise, we are done. */
916 557 : if (r->out.realm) {
917 507 : status = libnet_JoinADSDomain(ctx, r);
918 507 : return status;
919 : }
920 :
921 50 : return status;
922 : }
923 :
924 13 : NTSTATUS libnet_Join_member(struct libnet_context *ctx,
925 : TALLOC_CTX *mem_ctx,
926 : struct libnet_Join_member *r)
927 : {
928 7 : NTSTATUS status;
929 7 : TALLOC_CTX *tmp_mem;
930 7 : struct libnet_JoinDomain *r2;
931 7 : struct provision_store_self_join_settings *set_secrets;
932 13 : uint32_t acct_type = 0;
933 7 : const char *account_name;
934 7 : const char *netbios_name;
935 13 : const char *error_string = NULL;
936 :
937 13 : r->out.error_string = NULL;
938 :
939 13 : tmp_mem = talloc_new(mem_ctx);
940 13 : if (!tmp_mem) {
941 0 : return NT_STATUS_NO_MEMORY;
942 : }
943 :
944 13 : r2 = talloc_zero(tmp_mem, struct libnet_JoinDomain);
945 13 : if (!r2) {
946 0 : status = NT_STATUS_NO_MEMORY;
947 0 : goto out;
948 : }
949 :
950 13 : acct_type = ACB_WSTRUST;
951 :
952 13 : if (r->in.netbios_name != NULL) {
953 6 : netbios_name = r->in.netbios_name;
954 : } else {
955 0 : netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
956 0 : if (!netbios_name) {
957 0 : status = NT_STATUS_NO_MEMORY;
958 0 : goto out;
959 : }
960 : }
961 :
962 13 : account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
963 13 : if (!account_name) {
964 0 : status = NT_STATUS_NO_MEMORY;
965 0 : goto out;
966 : }
967 :
968 : /*
969 : * join the domain
970 : */
971 13 : r2->in.domain_name = r->in.domain_name;
972 13 : r2->in.account_name = account_name;
973 13 : r2->in.netbios_name = netbios_name;
974 13 : r2->in.level = LIBNET_JOINDOMAIN_AUTOMATIC;
975 13 : r2->in.acct_type = acct_type;
976 13 : r2->in.recreate_account = false;
977 13 : r2->in.account_pass = r->in.account_pass;
978 13 : status = libnet_JoinDomain(ctx, r2, r2);
979 13 : if (!NT_STATUS_IS_OK(status)) {
980 2 : r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
981 2 : goto out;
982 : }
983 :
984 11 : set_secrets = talloc_zero(tmp_mem,
985 : struct provision_store_self_join_settings);
986 11 : if (!set_secrets) {
987 0 : status = NT_STATUS_NO_MEMORY;
988 0 : goto out;
989 : }
990 :
991 11 : set_secrets->domain_name = r2->out.domain_name;
992 11 : set_secrets->realm = r2->out.realm;
993 11 : set_secrets->netbios_name = netbios_name;
994 11 : set_secrets->secure_channel_type = SEC_CHAN_WKSTA;
995 11 : set_secrets->machine_password = r2->out.join_password;
996 11 : set_secrets->key_version_number = r2->out.kvno;
997 11 : set_secrets->domain_sid = r2->out.domain_sid;
998 :
999 11 : status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
1000 11 : if (!NT_STATUS_IS_OK(status)) {
1001 0 : if (error_string) {
1002 0 : r->out.error_string = talloc_steal(mem_ctx, error_string);
1003 : } else {
1004 0 : r->out.error_string
1005 0 : = talloc_asprintf(mem_ctx,
1006 : "provision_store_self_join failed with %s",
1007 : nt_errstr(status));
1008 : }
1009 0 : goto out;
1010 : }
1011 :
1012 : /* move all out parameter to the callers TALLOC_CTX */
1013 11 : r->out.join_password = talloc_move(mem_ctx, &r2->out.join_password);
1014 11 : r->out.domain_sid = talloc_move(mem_ctx, &r2->out.domain_sid);
1015 11 : r->out.domain_name = talloc_move(mem_ctx, &r2->out.domain_name);
1016 11 : status = NT_STATUS_OK;
1017 13 : out:
1018 13 : talloc_free(tmp_mem);
1019 13 : return status;
1020 : }
1021 :
|
