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s4-drsuapi: Clarify role of drs_security_access_check_nc_root()
[Samba.git] / source4 / libnet / libnet_join.c
blobd1afb4f22b94f7d3785a1934a9538e57cdf03728
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 static NTSTATUS libnet_JoinADSDomain(struct libnet_context *ctx, struct libnet_JoinDomain *r)
49 {
50 NTSTATUS status;
51
52 TALLOC_CTX *tmp_ctx;
53
54 const char *realm = r->out.realm;
55
56 const struct dcerpc_binding *samr_binding = r->out.samr_binding;
57
58 struct dcerpc_pipe *drsuapi_pipe;
59 struct dcerpc_binding *drsuapi_binding;
60 enum dcerpc_transport_t transport;
61 struct drsuapi_DsBind r_drsuapi_bind;
62 struct drsuapi_DsCrackNames r_crack_names;
63 struct drsuapi_DsNameString names[1];
64 struct policy_handle drsuapi_bind_handle;
65 struct GUID drsuapi_bind_guid;
66
67 struct ldb_context *remote_ldb;
68 struct ldb_dn *account_dn;
69 const char *account_dn_str;
70 const char *remote_ldb_url;
71 struct ldb_result *res;
72 struct ldb_message *msg;
73
74 int ret, rtn;
75
76 const char * const attrs[] = {
77 "msDS-KeyVersionNumber",
78 "servicePrincipalName",
79 "dNSHostName",
80 "objectGUID",
81 NULL,
82 };
83
84 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 tmp_ctx = talloc_named(r, 0, "libnet_JoinADSDomain temp context");
93 if (!tmp_ctx) {
94 r->out.error_string = NULL;
95 return NT_STATUS_NO_MEMORY;
96 }
97
98 drsuapi_binding = dcerpc_binding_dup(tmp_ctx, samr_binding);
99 if (!drsuapi_binding) {
100 r->out.error_string = NULL;
101 talloc_free(tmp_ctx);
102 return NT_STATUS_NO_MEMORY;
103 }
104
105 transport = dcerpc_binding_get_transport(drsuapi_binding);
106
107 /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
108 if (transport != NCALRPC) {
109 status = dcerpc_binding_set_transport(drsuapi_binding, NCACN_IP_TCP);
110 if (!NT_STATUS_IS_OK(status)) {
111 r->out.error_string = talloc_asprintf(r,
112 "dcerpc_binding_set_transport failed: %s",
113 nt_errstr(status));
114 talloc_free(tmp_ctx);
115 return status;
116 }
117 }
118
119 status = dcerpc_binding_set_string_option(drsuapi_binding, "endpoint", NULL);
120 if (!NT_STATUS_IS_OK(status)) {
121 r->out.error_string = talloc_asprintf(r,
122 "dcerpc_binding_set_string_option failed: %s",
123 nt_errstr(status));
124 talloc_free(tmp_ctx);
125 return status;
126 }
127
128 status = dcerpc_binding_set_flags(drsuapi_binding, DCERPC_SEAL, 0);
129 if (!NT_STATUS_IS_OK(status)) {
130 r->out.error_string = talloc_asprintf(r,
131 "dcerpc_binding_set_flags failed: %s",
132 nt_errstr(status));
133 talloc_free(tmp_ctx);
134 return status;
135 }
136
137 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 if (!NT_STATUS_IS_OK(status)) {
145 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 talloc_free(tmp_ctx);
150 return status;
151 }
152
153 /* get a DRSUAPI pipe handle */
154 GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
155
156 r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
157 r_drsuapi_bind.in.bind_info = NULL;
158 r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
159
160 status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
161 if (!NT_STATUS_IS_OK(status)) {
162 r->out.error_string
163 = talloc_asprintf(r,
164 "dcerpc_drsuapi_DsBind failed - %s",
165 nt_errstr(status));
166 talloc_free(tmp_ctx);
167 return status;
168 } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
169 r->out.error_string
170 = talloc_asprintf(r,
171 "DsBind failed - %s",
172 win_errstr(r_drsuapi_bind.out.result));
173 talloc_free(tmp_ctx);
174 return NT_STATUS_UNSUCCESSFUL;
175 }
176
177 /* Actually 'crack' the names */
178 ZERO_STRUCT(r_crack_names);
179 r_crack_names.in.bind_handle = &drsuapi_bind_handle;
180 r_crack_names.in.level = 1;
181 r_crack_names.in.req = talloc(r, union drsuapi_DsNameRequest);
182 if (!r_crack_names.in.req) {
183 r->out.error_string = NULL;
184 talloc_free(tmp_ctx);
185 return NT_STATUS_NO_MEMORY;
186 }
187 r_crack_names.in.req->req1.codepage = 1252; /* western european */
188 r_crack_names.in.req->req1.language = 0x00000407; /* german */
189 r_crack_names.in.req->req1.count = 1;
190 r_crack_names.in.req->req1.names = names;
191 r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
192 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
193 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
194 names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
195 if (!names[0].str) {
196 r->out.error_string = NULL;
197 talloc_free(tmp_ctx);
198 return NT_STATUS_NO_MEMORY;
199 }
200
201 r_crack_names.out.ctr = talloc(r, union drsuapi_DsNameCtr);
202 r_crack_names.out.level_out = talloc(r, uint32_t);
203 if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
204 r->out.error_string = NULL;
205 talloc_free(tmp_ctx);
206 return NT_STATUS_NO_MEMORY;
207 }
208
209 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
210 if (!NT_STATUS_IS_OK(status)) {
211 r->out.error_string
212 = talloc_asprintf(r,
213 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
214 names[0].str,
215 nt_errstr(status));
216 talloc_free(tmp_ctx);
217 return status;
218 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
219 r->out.error_string
220 = talloc_asprintf(r,
221 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
222 talloc_free(tmp_ctx);
223 return NT_STATUS_UNSUCCESSFUL;
224 } else if (*r_crack_names.out.level_out != 1
225 || !r_crack_names.out.ctr->ctr1
226 || r_crack_names.out.ctr->ctr1->count != 1) {
227 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
228 talloc_free(tmp_ctx);
229 return NT_STATUS_INVALID_PARAMETER;
230 } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
231 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
232 talloc_free(tmp_ctx);
233 return NT_STATUS_UNSUCCESSFUL;
234 } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
235 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
236 talloc_free(tmp_ctx);
237 return NT_STATUS_INVALID_PARAMETER;
238 }
239
240 /* Store the DN of our machine account. */
241 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 remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
246 dcerpc_binding_get_string_option(drsuapi_binding, "target_hostname"));
247 if (!remote_ldb_url) {
248 r->out.error_string = NULL;
249 talloc_free(tmp_ctx);
250 return NT_STATUS_NO_MEMORY;
251 }
252
253 remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
254 remote_ldb_url,
255 NULL, ctx->cred, 0);
256 if (!remote_ldb) {
257 r->out.error_string = NULL;
258 talloc_free(tmp_ctx);
259 return NT_STATUS_UNSUCCESSFUL;
260 }
261
262 account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
263 if (account_dn == NULL) {
264 r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
265 account_dn_str);
266 talloc_free(tmp_ctx);
267 return NT_STATUS_UNSUCCESSFUL;
268 }
269
270 /* search for the user's record */
271 ret = ldb_search(remote_ldb, tmp_ctx, &res,
272 account_dn, LDB_SCOPE_BASE, attrs, NULL);
273 if (ret != LDB_SUCCESS) {
274 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
275 account_dn_str, ldb_errstring(remote_ldb));
276 talloc_free(tmp_ctx);
277 return NT_STATUS_UNSUCCESSFUL;
278 }
279
280 if (res->count != 1) {
281 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
282 account_dn_str, res->count);
283 talloc_free(tmp_ctx);
284 return NT_STATUS_UNSUCCESSFUL;
285 }
286
287 /* Prepare a new message, for the modify */
288 msg = ldb_msg_new(tmp_ctx);
289 if (!msg) {
290 r->out.error_string = NULL;
291 talloc_free(tmp_ctx);
292 return NT_STATUS_NO_MEMORY;
293 }
294 msg->dn = res->msgs[0]->dn;
295
296 {
297 unsigned int i;
298 const char *service_principal_name[2];
299 const char *dns_host_name = strlower_talloc(msg,
300 talloc_asprintf(msg,
301 "%s.%s",
302 r->in.netbios_name,
303 realm));
304
305 if (!dns_host_name) {
306 r->out.error_string = NULL;
307 talloc_free(tmp_ctx);
308 return NT_STATUS_NO_MEMORY;
309 }
310
311 service_principal_name[0] = talloc_asprintf(msg, "HOST/%s",
312 dns_host_name);
313 service_principal_name[1] = talloc_asprintf(msg, "HOST/%s",
314 r->in.netbios_name);
315
316 for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
317 if (!service_principal_name[i]) {
318 r->out.error_string = NULL;
319 talloc_free(tmp_ctx);
320 return NT_STATUS_NO_MEMORY;
321 }
322 rtn = ldb_msg_add_string(msg, "servicePrincipalName",
323 service_principal_name[i]);
324 if (rtn != LDB_SUCCESS) {
325 r->out.error_string = NULL;
326 talloc_free(tmp_ctx);
327 return NT_STATUS_NO_MEMORY;
328 }
329 }
330
331 rtn = ldb_msg_add_string(msg, "dNSHostName", dns_host_name);
332 if (rtn != LDB_SUCCESS) {
333 r->out.error_string = NULL;
334 talloc_free(tmp_ctx);
335 return NT_STATUS_NO_MEMORY;
336 }
337
338 rtn = dsdb_replace(remote_ldb, msg, 0);
339 if (rtn != LDB_SUCCESS) {
340 r->out.error_string
341 = talloc_asprintf(r,
342 "Failed to replace entries on %s",
343 ldb_dn_get_linearized(msg->dn));
344 talloc_free(tmp_ctx);
345 return NT_STATUS_INTERNAL_DB_CORRUPTION;
346 }
347 }
348
349 msg = ldb_msg_new(tmp_ctx);
350 if (!msg) {
351 r->out.error_string = NULL;
352 talloc_free(tmp_ctx);
353 return NT_STATUS_NO_MEMORY;
354 }
355 msg->dn = res->msgs[0]->dn;
356
357 rtn = samdb_msg_add_uint(remote_ldb, msg, msg,
358 "msDS-SupportedEncryptionTypes", ENC_ALL_TYPES);
359 if (rtn != LDB_SUCCESS) {
360 r->out.error_string = NULL;
361 talloc_free(tmp_ctx);
362 return NT_STATUS_NO_MEMORY;
363 }
364
365 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 if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
369 r->out.error_string
370 = talloc_asprintf(r,
371 "Failed to replace msDS-SupportedEncryptionTypes on %s",
372 ldb_dn_get_linearized(msg->dn));
373 talloc_free(tmp_ctx);
374 return NT_STATUS_INTERNAL_DB_CORRUPTION;
375 }
376
377 /* DsCrackNames to find out the DN of the domain. */
378 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
379 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
380 names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
381 if (!names[0].str) {
382 r->out.error_string = NULL;
383 talloc_free(tmp_ctx);
384 return NT_STATUS_NO_MEMORY;
385 }
386
387 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
388 if (!NT_STATUS_IS_OK(status)) {
389 r->out.error_string
390 = talloc_asprintf(r,
391 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
392 r->in.domain_name,
393 nt_errstr(status));
394 talloc_free(tmp_ctx);
395 return status;
396 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
397 r->out.error_string
398 = talloc_asprintf(r,
399 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
400 talloc_free(tmp_ctx);
401 return NT_STATUS_UNSUCCESSFUL;
402 } else if (*r_crack_names.out.level_out != 1
403 || !r_crack_names.out.ctr->ctr1
404 || r_crack_names.out.ctr->ctr1->count != 1
405 || !r_crack_names.out.ctr->ctr1->array[0].result_name
406 || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
407 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
408 talloc_free(tmp_ctx);
409 return NT_STATUS_UNSUCCESSFUL;
410 }
411
412 /* Store the account DN. */
413 r->out.account_dn_str = account_dn_str;
414 talloc_steal(r, account_dn_str);
415
416 /* Store the domain DN. */
417 r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
418 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 r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
423
424 /* Store the account GUID. */
425 r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
426
427 if (r->in.acct_type == ACB_SVRTRUST) {
428 status = libnet_JoinSite(ctx, remote_ldb, r);
429 }
430 talloc_free(tmp_ctx);
431
432 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 NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
457 {
458 TALLOC_CTX *tmp_ctx;
459
460 NTSTATUS status, cu_status;
461
462 struct libnet_RpcConnect *connect_with_info;
463 struct dcerpc_pipe *samr_pipe;
464
465 struct samr_Connect sc;
466 struct policy_handle p_handle;
467 struct samr_OpenDomain od;
468 struct policy_handle d_handle;
469 struct samr_LookupNames ln;
470 struct samr_Ids rids, types;
471 struct samr_OpenUser ou;
472 struct samr_CreateUser2 cu;
473 struct policy_handle *u_handle = NULL;
474 struct samr_QueryUserInfo qui;
475 union samr_UserInfo *uinfo;
476 struct samr_UserInfo21 u_info21;
477 union libnet_SetPassword r2;
478 struct samr_GetUserPwInfo pwp;
479 struct samr_PwInfo info;
480 struct lsa_String samr_account_name;
481
482 uint32_t acct_flags, old_acct_flags;
483 uint32_t rid, access_granted;
484 int policy_min_pw_len = 0;
485
486 struct dom_sid *account_sid = NULL;
487 const char *password_str = NULL;
488
489 r->out.error_string = NULL;
490 ZERO_STRUCT(r2);
491
492 tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
493 if (!tmp_ctx) {
494 r->out.error_string = NULL;
495 return NT_STATUS_NO_MEMORY;
496 }
497
498 u_handle = talloc(tmp_ctx, struct policy_handle);
499 if (!u_handle) {
500 r->out.error_string = NULL;
501 talloc_free(tmp_ctx);
502 return NT_STATUS_NO_MEMORY;
503 }
504
505 connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
506 if (!connect_with_info) {
507 r->out.error_string = NULL;
508 talloc_free(tmp_ctx);
509 return NT_STATUS_NO_MEMORY;
510 }
511
512 /* prepare connect to the SAMR pipe of PDC */
513 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
514 connect_with_info->in.binding = NULL;
515 connect_with_info->in.name = r->in.domain_name;
516 } else {
517 connect_with_info->in.binding = r->in.binding;
518 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 connect_with_info->level = LIBNET_RPC_CONNECT_DC_INFO;
524 connect_with_info->in.dcerpc_iface = &ndr_table_samr;
525
526 /*
527 establish the SAMR connection
528 */
529 status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
530 if (!NT_STATUS_IS_OK(status)) {
531 if (r->in.binding) {
532 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 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 talloc_free(tmp_ctx);
541 return status;
542 }
543
544 samr_pipe = connect_with_info->out.dcerpc_pipe;
545
546 /* prepare samr_Connect */
547 ZERO_STRUCT(p_handle);
548 sc.in.system_name = NULL;
549 sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
550 sc.out.connect_handle = &p_handle;
551
552 /* 2. do a samr_Connect to get a policy handle */
553 status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
554 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
555 status = sc.out.result;
556 }
557 if (!NT_STATUS_IS_OK(status)) {
558 r->out.error_string = talloc_asprintf(mem_ctx,
559 "samr_Connect failed: %s",
560 nt_errstr(status));
561 talloc_free(tmp_ctx);
562 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 if (!connect_with_info->out.domain_name) {
567 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
568 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 connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
572 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 if (!connect_with_info->out.domain_sid) {
578 struct lsa_String name;
579 struct samr_LookupDomain l;
580 struct dom_sid2 *sid = NULL;
581 name.string = connect_with_info->out.domain_name;
582 l.in.connect_handle = &p_handle;
583 l.in.domain_name = &name;
584 l.out.sid = &sid;
585
586 status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
587 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
588 status = l.out.result;
589 }
590 if (!NT_STATUS_IS_OK(status)) {
591 r->out.error_string = talloc_asprintf(mem_ctx,
592 "SAMR LookupDomain failed: %s",
593 nt_errstr(status));
594 talloc_free(tmp_ctx);
595 return status;
596 }
597 connect_with_info->out.domain_sid = *l.out.sid;
598 }
599
600 /* prepare samr_OpenDomain */
601 ZERO_STRUCT(d_handle);
602 od.in.connect_handle = &p_handle;
603 od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
604 od.in.sid = connect_with_info->out.domain_sid;
605 od.out.domain_handle = &d_handle;
606
607 /* do a samr_OpenDomain to get a domain handle */
608 status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
609 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
610 status = od.out.result;
611 }
612 if (!NT_STATUS_IS_OK(status)) {
613 struct dom_sid_buf buf;
614 r->out.error_string = talloc_asprintf(
615 mem_ctx,
616 "samr_OpenDomain for [%s] failed: %s",
617 dom_sid_str_buf(connect_with_info->out.domain_sid,
618 &buf),
619 nt_errstr(status));
620 talloc_free(tmp_ctx);
621 return status;
622 }
623
624 /* prepare samr_CreateUser2 */
625 ZERO_STRUCTP(u_handle);
626 cu.in.domain_handle = &d_handle;
627 cu.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
628 samr_account_name.string = r->in.account_name;
629 cu.in.account_name = &samr_account_name;
630 cu.in.acct_flags = r->in.acct_type;
631 cu.out.user_handle = u_handle;
632 cu.out.rid = &rid;
633 cu.out.access_granted = &access_granted;
634
635 /* do a samr_CreateUser2 to get an account handle, or an error */
636 cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
637 if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
638 cu_status = cu.out.result;
639 }
640 status = cu_status;
641 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
642 /* prepare samr_LookupNames */
643 ln.in.domain_handle = &d_handle;
644 ln.in.num_names = 1;
645 ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
646 ln.out.rids = &rids;
647 ln.out.types = &types;
648 if (!ln.in.names) {
649 r->out.error_string = NULL;
650 talloc_free(tmp_ctx);
651 return NT_STATUS_NO_MEMORY;
652 }
653 ln.in.names[0].string = r->in.account_name;
654
655 /* 5. do a samr_LookupNames to get the users rid */
656 status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
657 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
658 status = ln.out.result;
659 }
660 if (!NT_STATUS_IS_OK(status)) {
661 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 talloc_free(tmp_ctx);
666 return status;
667 }
668
669 /* check if we got one RID for the user */
670 if (ln.out.rids->count != 1) {
671 r->out.error_string = talloc_asprintf(mem_ctx,
672 "samr_LookupNames for [%s] returns %d RIDs",
673 r->in.account_name, ln.out.rids->count);
674 talloc_free(tmp_ctx);
675 return NT_STATUS_INVALID_NETWORK_RESPONSE;
676 }
677
678 if (ln.out.types->count != 1) {
679 r->out.error_string = talloc_asprintf(mem_ctx,
680 "samr_LookupNames for [%s] returns %d RID TYPEs",
681 r->in.account_name, ln.out.types->count);
682 talloc_free(tmp_ctx);
683 return NT_STATUS_INVALID_NETWORK_RESPONSE;
684 }
685
686 /* prepare samr_OpenUser */
687 ZERO_STRUCTP(u_handle);
688 ou.in.domain_handle = &d_handle;
689 ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
690 ou.in.rid = ln.out.rids->ids[0];
691 rid = ou.in.rid;
692 ou.out.user_handle = u_handle;
693
694 /* 6. do a samr_OpenUser to get a user handle */
695 status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
696 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
697 status = ou.out.result;
698 }
699 if (!NT_STATUS_IS_OK(status)) {
700 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 talloc_free(tmp_ctx);
705 return status;
706 }
707
708 if (r->in.recreate_account) {
709 struct samr_DeleteUser d;
710 d.in.user_handle = u_handle;
711 d.out.user_handle = u_handle;
712 status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
713 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
714 status = d.out.result;
715 }
716 if (!NT_STATUS_IS_OK(status)) {
717 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 talloc_free(tmp_ctx);
722 return status;
723 }
724
725 /* We want to recreate, so delete and another samr_CreateUser2 */
726
727 /* &cu filled in above */
728 status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
729 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
730 status = cu.out.result;
731 }
732 if (!NT_STATUS_IS_OK(status)) {
733 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 talloc_free(tmp_ctx);
737 return status;
738 }
739 }
740 } else if (!NT_STATUS_IS_OK(status)) {
741 r->out.error_string = talloc_asprintf(mem_ctx,
742 "samr_CreateUser2 for [%s] failed: %s",
743 r->in.account_name, nt_errstr(status));
744 talloc_free(tmp_ctx);
745 return status;
746 }
747
748 /* prepare samr_QueryUserInfo (get flags) */
749 qui.in.user_handle = u_handle;
750 qui.in.level = 16;
751 qui.out.info = &uinfo;
752
753 status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
754 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
755 status = qui.out.result;
756 }
757 if (!NT_STATUS_IS_OK(status)) {
758 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 talloc_free(tmp_ctx);
763 return status;
764 }
765
766 if (!uinfo) {
767 status = NT_STATUS_INVALID_PARAMETER;
768 r->out.error_string
769 = 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 talloc_free(tmp_ctx);
773 return status;
774 }
775
776 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 if (old_acct_flags
779 != r->in.acct_type) {
780 const char *old_account_type, *new_account_type;
781 switch (old_acct_flags) {
782 case ACB_WSTRUST:
783 old_account_type = "domain member (member)";
784 break;
785 case ACB_SVRTRUST:
786 old_account_type = "domain controller (bdc)";
787 break;
788 case ACB_DOMTRUST:
789 old_account_type = "trusted domain";
790 break;
791 default:
792 return NT_STATUS_INVALID_PARAMETER;
793 }
794 switch (r->in.acct_type) {
795 case ACB_WSTRUST:
796 new_account_type = "domain member (member)";
797 break;
798 case ACB_SVRTRUST:
799 new_account_type = "domain controller (bdc)";
800 break;
801 case ACB_DOMTRUST:
802 new_account_type = "trusted domain";
803 break;
804 default:
805 return NT_STATUS_INVALID_PARAMETER;
806 }
807
808 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 r->out.error_string
811 = 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 talloc_free(tmp_ctx);
817 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 r->out.error_string
823 = 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 talloc_free(tmp_ctx);
829 return NT_STATUS_USER_EXISTS;
830 }
831 } else {
832 acct_flags = uinfo->info16.acct_flags;
833 }
834
835 acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
836
837 /* Find out what password policy this user has */
838 pwp.in.user_handle = u_handle;
839 pwp.out.info = &info;
840
841 status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
842 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
843 status = pwp.out.result;
844 }
845 if (NT_STATUS_IS_OK(status)) {
846 policy_min_pw_len = pwp.out.info->min_password_length;
847 }
848
849 if (r->in.account_pass != NULL) {
850 password_str = talloc_strdup(tmp_ctx, r->in.account_pass);
851 } else {
852 /* Grab a password of that minimum length */
853 password_str = generate_random_password(tmp_ctx,
854 MAX(8, policy_min_pw_len), 255);
855 }
856 if (!password_str) {
857 r->out.error_string = NULL;
858 talloc_free(tmp_ctx);
859 return NT_STATUS_NO_MEMORY;
860 }
861
862 /* set full_name and reset flags */
863 ZERO_STRUCT(u_info21);
864 u_info21.full_name.string = r->in.account_name;
865 u_info21.acct_flags = acct_flags;
866 u_info21.fields_present = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
867
868 r2.samr_handle.level = LIBNET_SET_PASSWORD_SAMR_HANDLE;
869 r2.samr_handle.in.account_name = r->in.account_name;
870 r2.samr_handle.in.newpassword = password_str;
871 r2.samr_handle.in.user_handle = u_handle;
872 r2.samr_handle.in.dcerpc_pipe = samr_pipe;
873 r2.samr_handle.in.info21 = &u_info21;
874
875 status = libnet_SetPassword(ctx, tmp_ctx, &r2);
876 if (!NT_STATUS_IS_OK(status)) {
877 r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
878 talloc_free(tmp_ctx);
879 return status;
880 }
881
882 account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
883 if (!account_sid) {
884 r->out.error_string = NULL;
885 talloc_free(tmp_ctx);
886 return NT_STATUS_NO_MEMORY;
887 }
888
889 /* Finish out by pushing various bits of status data out for the caller to use */
890 r->out.join_password = password_str;
891 talloc_steal(mem_ctx, r->out.join_password);
892
893 r->out.domain_sid = connect_with_info->out.domain_sid;
894 talloc_steal(mem_ctx, r->out.domain_sid);
895
896 r->out.account_sid = account_sid;
897 talloc_steal(mem_ctx, r->out.account_sid);
898
899 r->out.domain_name = connect_with_info->out.domain_name;
900 talloc_steal(mem_ctx, r->out.domain_name);
901 r->out.realm = connect_with_info->out.realm;
902 talloc_steal(mem_ctx, r->out.realm);
903 r->out.samr_pipe = samr_pipe;
904 talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
905 r->out.samr_binding = samr_pipe->binding;
906 r->out.user_handle = u_handle;
907 talloc_steal(mem_ctx, u_handle);
908 r->out.error_string = r2.samr_handle.out.error_string;
909 talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
910 r->out.kvno = 0;
911 r->out.server_dn_str = NULL;
912 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 if (r->out.realm) {
917 status = libnet_JoinADSDomain(ctx, r);
918 return status;
919 }
920
921 return status;
922 }
923
924 NTSTATUS libnet_Join_member(struct libnet_context *ctx,
925 TALLOC_CTX *mem_ctx,
926 struct libnet_Join_member *r)
927 {
928 NTSTATUS status;
929 TALLOC_CTX *tmp_mem;
930 struct libnet_JoinDomain *r2;
931 struct provision_store_self_join_settings *set_secrets;
932 uint32_t acct_type = 0;
933 const char *account_name;
934 const char *netbios_name;
935 const char *error_string = NULL;
936
937 r->out.error_string = NULL;
938
939 tmp_mem = talloc_new(mem_ctx);
940 if (!tmp_mem) {
941 return NT_STATUS_NO_MEMORY;
942 }
943
944 r2 = talloc_zero(tmp_mem, struct libnet_JoinDomain);
945 if (!r2) {
946 status = NT_STATUS_NO_MEMORY;
947 goto out;
948 }
949
950 acct_type = ACB_WSTRUST;
951
952 if (r->in.netbios_name != NULL) {
953 netbios_name = r->in.netbios_name;
954 } else {
955 netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
956 if (!netbios_name) {
957 status = NT_STATUS_NO_MEMORY;
958 goto out;
959 }
960 }
961
962 account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
963 if (!account_name) {
964 status = NT_STATUS_NO_MEMORY;
965 goto out;
966 }
967
968 /*
969 * join the domain
970 */
971 r2->in.domain_name = r->in.domain_name;
972 r2->in.account_name = account_name;
973 r2->in.netbios_name = netbios_name;
974 r2->in.level = LIBNET_JOINDOMAIN_AUTOMATIC;
975 r2->in.acct_type = acct_type;
976 r2->in.recreate_account = false;
977 r2->in.account_pass = r->in.account_pass;
978 status = libnet_JoinDomain(ctx, r2, r2);
979 if (!NT_STATUS_IS_OK(status)) {
980 r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
981 goto out;
982 }
983
984 set_secrets = talloc_zero(tmp_mem,
985 struct provision_store_self_join_settings);
986 if (!set_secrets) {
987 status = NT_STATUS_NO_MEMORY;
988 goto out;
989 }
990
991 set_secrets->domain_name = r2->out.domain_name;
992 set_secrets->realm = r2->out.realm;
993 set_secrets->netbios_name = netbios_name;
994 set_secrets->secure_channel_type = SEC_CHAN_WKSTA;
995 set_secrets->machine_password = r2->out.join_password;
996 set_secrets->key_version_number = r2->out.kvno;
997 set_secrets->domain_sid = r2->out.domain_sid;
998
999 status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
1000 if (!NT_STATUS_IS_OK(status)) {
1001 if (error_string) {
1002 r->out.error_string = talloc_steal(mem_ctx, error_string);
1003 } else {
1004 r->out.error_string
1005 = talloc_asprintf(mem_ctx,
1006 "provision_store_self_join failed with %s",
1007 nt_errstr(status));
1008 }
1009 goto out;
1010 }
1011
1012 /* move all out parameter to the callers TALLOC_CTX */
1013 r->out.join_password = talloc_move(mem_ctx, &r2->out.join_password);
1014 r->out.domain_sid = talloc_move(mem_ctx, &r2->out.domain_sid);
1015 r->out.domain_name = talloc_move(mem_ctx, &r2->out.domain_name);
1016 status = NT_STATUS_OK;
1017 out:
1018 talloc_free(tmp_mem);
1019 return status;
1020 }
1021
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