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s3: Survive an idle child that was killed
[Samba.git] / source4 / libnet / libnet_join.c
blob6077de906b3b9ffaedc0d47bca35f4034c00357e
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 "lib/ldb/include/ldb.h"
26 #include "lib/ldb/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 struct dcerpc_binding *samr_binding = r->out.samr_binding;
57
58 struct dcerpc_pipe *drsuapi_pipe;
59 struct dcerpc_binding *drsuapi_binding;
60 struct drsuapi_DsBind r_drsuapi_bind;
61 struct drsuapi_DsCrackNames r_crack_names;
62 struct drsuapi_DsNameString names[1];
63 struct policy_handle drsuapi_bind_handle;
64 struct GUID drsuapi_bind_guid;
65
66 struct ldb_context *remote_ldb;
67 struct ldb_dn *account_dn;
68 const char *account_dn_str;
69 const char *remote_ldb_url;
70 struct ldb_result *res;
71 struct ldb_message *msg;
72
73 int ret, rtn;
74
75 const char * const attrs[] = {
76 "msDS-KeyVersionNumber",
77 "servicePrincipalName",
78 "dNSHostName",
79 "objectGUID",
80 NULL,
81 };
82
83 r->out.error_string = NULL;
84
85 /* We need to convert between a samAccountName and domain to a
86 * DN in the directory. The correct way to do this is with
87 * DRSUAPI CrackNames */
88
89 /* Fiddle with the bindings, so get to DRSUAPI on
90 * NCACN_IP_TCP, sealed */
91 tmp_ctx = talloc_named(r, 0, "libnet_JoinADSDomain temp context");
92 if (!tmp_ctx) {
93 r->out.error_string = NULL;
94 return NT_STATUS_NO_MEMORY;
95 }
96
97 drsuapi_binding = talloc_zero(tmp_ctx, struct dcerpc_binding);
98 if (!drsuapi_binding) {
99 r->out.error_string = NULL;
100 talloc_free(tmp_ctx);
101 return NT_STATUS_NO_MEMORY;
102 }
103
104 *drsuapi_binding = *samr_binding;
105
106 /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
107 if (drsuapi_binding->transport != NCALRPC) {
108 drsuapi_binding->transport = NCACN_IP_TCP;
109 }
110 drsuapi_binding->endpoint = NULL;
111 drsuapi_binding->flags |= DCERPC_SEAL;
112
113 status = dcerpc_pipe_connect_b(tmp_ctx,
114 &drsuapi_pipe,
115 drsuapi_binding,
116 &ndr_table_drsuapi,
117 ctx->cred,
118 ctx->event_ctx,
119 ctx->lp_ctx);
120 if (!NT_STATUS_IS_OK(status)) {
121 r->out.error_string = talloc_asprintf(r,
122 "Connection to DRSUAPI pipe of PDC of domain '%s' failed: %s",
123 r->out.domain_name,
124 nt_errstr(status));
125 talloc_free(tmp_ctx);
126 return status;
127 }
128
129 /* get a DRSUAPI pipe handle */
130 GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
131
132 r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
133 r_drsuapi_bind.in.bind_info = NULL;
134 r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
135
136 status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
137 if (!NT_STATUS_IS_OK(status)) {
138 r->out.error_string
139 = talloc_asprintf(r,
140 "dcerpc_drsuapi_DsBind failed - %s",
141 nt_errstr(status));
142 talloc_free(tmp_ctx);
143 return status;
144 } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
145 r->out.error_string
146 = talloc_asprintf(r,
147 "DsBind failed - %s",
148 win_errstr(r_drsuapi_bind.out.result));
149 talloc_free(tmp_ctx);
150 return NT_STATUS_UNSUCCESSFUL;
151 }
152
153 /* Actually 'crack' the names */
154 ZERO_STRUCT(r_crack_names);
155 r_crack_names.in.bind_handle = &drsuapi_bind_handle;
156 r_crack_names.in.level = 1;
157 r_crack_names.in.req = talloc(r, union drsuapi_DsNameRequest);
158 if (!r_crack_names.in.req) {
159 r->out.error_string = NULL;
160 talloc_free(tmp_ctx);
161 return NT_STATUS_NO_MEMORY;
162 }
163 r_crack_names.in.req->req1.codepage = 1252; /* western european */
164 r_crack_names.in.req->req1.language = 0x00000407; /* german */
165 r_crack_names.in.req->req1.count = 1;
166 r_crack_names.in.req->req1.names = names;
167 r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
168 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
169 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
170 names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
171 if (!names[0].str) {
172 r->out.error_string = NULL;
173 talloc_free(tmp_ctx);
174 return NT_STATUS_NO_MEMORY;
175 }
176
177 r_crack_names.out.ctr = talloc(r, union drsuapi_DsNameCtr);
178 r_crack_names.out.level_out = talloc(r, uint32_t);
179 if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
180 r->out.error_string = NULL;
181 talloc_free(tmp_ctx);
182 return NT_STATUS_NO_MEMORY;
183 }
184
185 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
186 if (!NT_STATUS_IS_OK(status)) {
187 r->out.error_string
188 = talloc_asprintf(r,
189 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
190 names[0].str,
191 nt_errstr(status));
192 talloc_free(tmp_ctx);
193 return status;
194 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
195 r->out.error_string
196 = talloc_asprintf(r,
197 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
198 talloc_free(tmp_ctx);
199 return NT_STATUS_UNSUCCESSFUL;
200 } else if (*r_crack_names.out.level_out != 1
201 || !r_crack_names.out.ctr->ctr1
202 || r_crack_names.out.ctr->ctr1->count != 1) {
203 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
204 talloc_free(tmp_ctx);
205 return NT_STATUS_INVALID_PARAMETER;
206 } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
207 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
208 talloc_free(tmp_ctx);
209 return NT_STATUS_UNSUCCESSFUL;
210 } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
211 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
212 talloc_free(tmp_ctx);
213 return NT_STATUS_INVALID_PARAMETER;
214 }
215
216 /* Store the DN of our machine account. */
217 account_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
218
219 /* Now we know the user's DN, open with LDAP, read and modify a few things */
220
221 remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
222 drsuapi_binding->target_hostname);
223 if (!remote_ldb_url) {
224 r->out.error_string = NULL;
225 talloc_free(tmp_ctx);
226 return NT_STATUS_NO_MEMORY;
227 }
228
229 remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
230 remote_ldb_url,
231 NULL, ctx->cred, 0);
232 if (!remote_ldb) {
233 r->out.error_string = NULL;
234 talloc_free(tmp_ctx);
235 return NT_STATUS_UNSUCCESSFUL;
236 }
237
238 account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
239 if (! ldb_dn_validate(account_dn)) {
240 r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
241 account_dn_str);
242 talloc_free(tmp_ctx);
243 return NT_STATUS_UNSUCCESSFUL;
244 }
245
246 /* search for the user's record */
247 ret = ldb_search(remote_ldb, tmp_ctx, &res,
248 account_dn, LDB_SCOPE_BASE, attrs, NULL);
249 if (ret != LDB_SUCCESS) {
250 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
251 account_dn_str, ldb_errstring(remote_ldb));
252 talloc_free(tmp_ctx);
253 return NT_STATUS_UNSUCCESSFUL;
254 }
255
256 if (res->count != 1) {
257 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
258 account_dn_str, res->count);
259 talloc_free(tmp_ctx);
260 return NT_STATUS_UNSUCCESSFUL;
261 }
262
263 /* Prepare a new message, for the modify */
264 msg = ldb_msg_new(tmp_ctx);
265 if (!msg) {
266 r->out.error_string = NULL;
267 talloc_free(tmp_ctx);
268 return NT_STATUS_NO_MEMORY;
269 }
270 msg->dn = res->msgs[0]->dn;
271
272 {
273 unsigned int i;
274 const char *service_principal_name[2];
275 const char *dns_host_name = strlower_talloc(tmp_ctx,
276 talloc_asprintf(tmp_ctx,
277 "%s.%s",
278 r->in.netbios_name,
279 realm));
280
281 if (!dns_host_name) {
282 r->out.error_string = NULL;
283 talloc_free(tmp_ctx);
284 return NT_STATUS_NO_MEMORY;
285 }
286
287 service_principal_name[0] = talloc_asprintf(tmp_ctx, "HOST/%s",
288 dns_host_name);
289 service_principal_name[1] = talloc_asprintf(tmp_ctx, "HOST/%s",
290 r->in.netbios_name);
291
292 for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
293 if (!service_principal_name[i]) {
294 r->out.error_string = NULL;
295 talloc_free(tmp_ctx);
296 return NT_STATUS_NO_MEMORY;
297 }
298 rtn = samdb_msg_add_string(remote_ldb, tmp_ctx, msg, "servicePrincipalName", service_principal_name[i]);
299 if (rtn != LDB_SUCCESS) {
300 r->out.error_string = NULL;
301 talloc_free(tmp_ctx);
302 return NT_STATUS_NO_MEMORY;
303 }
304 }
305
306 rtn = samdb_msg_add_string(remote_ldb, tmp_ctx, msg,
307 "dNSHostName", dns_host_name);
308 if (rtn != LDB_SUCCESS) {
309 r->out.error_string = NULL;
310 talloc_free(tmp_ctx);
311 return NT_STATUS_NO_MEMORY;
312 }
313
314 rtn = dsdb_replace(remote_ldb, msg, 0);
315 if (rtn != LDB_SUCCESS) {
316 r->out.error_string
317 = talloc_asprintf(r,
318 "Failed to replace entries on %s",
319 ldb_dn_get_linearized(msg->dn));
320 talloc_free(tmp_ctx);
321 return NT_STATUS_INTERNAL_DB_CORRUPTION;
322 }
323 }
324
325 msg = ldb_msg_new(tmp_ctx);
326 if (!msg) {
327 r->out.error_string = NULL;
328 talloc_free(tmp_ctx);
329 return NT_STATUS_NO_MEMORY;
330 }
331 msg->dn = res->msgs[0]->dn;
332
333 rtn = samdb_msg_add_uint(remote_ldb, msg, msg,
334 "msDS-SupportedEncryptionTypes", ENC_ALL_TYPES);
335 if (rtn != LDB_SUCCESS) {
336 r->out.error_string = NULL;
337 talloc_free(tmp_ctx);
338 return NT_STATUS_NO_MEMORY;
339 }
340
341 rtn = dsdb_replace(remote_ldb, msg, 0);
342 /* The remote server may not support this attribute, if it
343 * isn't a modern schema */
344 if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
345 r->out.error_string
346 = talloc_asprintf(r,
347 "Failed to replace msDS-SupportedEncryptionTypes on %s",
348 ldb_dn_get_linearized(msg->dn));
349 talloc_free(tmp_ctx);
350 return NT_STATUS_INTERNAL_DB_CORRUPTION;
351 }
352
353 /* DsCrackNames to find out the DN of the domain. */
354 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
355 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
356 names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
357 if (!names[0].str) {
358 r->out.error_string = NULL;
359 talloc_free(tmp_ctx);
360 return NT_STATUS_NO_MEMORY;
361 }
362
363 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
364 if (!NT_STATUS_IS_OK(status)) {
365 r->out.error_string
366 = talloc_asprintf(r,
367 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
368 r->in.domain_name,
369 nt_errstr(status));
370 talloc_free(tmp_ctx);
371 return status;
372 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
373 r->out.error_string
374 = talloc_asprintf(r,
375 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
376 talloc_free(tmp_ctx);
377 return NT_STATUS_UNSUCCESSFUL;
378 } else if (*r_crack_names.out.level_out != 1
379 || !r_crack_names.out.ctr->ctr1
380 || r_crack_names.out.ctr->ctr1->count != 1
381 || !r_crack_names.out.ctr->ctr1->array[0].result_name
382 || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
383 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
384 talloc_free(tmp_ctx);
385 return NT_STATUS_UNSUCCESSFUL;
386 }
387
388 /* Store the account DN. */
389 r->out.account_dn_str = account_dn_str;
390 talloc_steal(r, account_dn_str);
391
392 /* Store the domain DN. */
393 r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
394 talloc_steal(r, r_crack_names.out.ctr->ctr1->array[0].result_name);
395
396 /* Store the KVNO of the account, critical for some kerberos
397 * operations */
398 r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
399
400 /* Store the account GUID. */
401 r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
402
403 if (r->in.acct_type == ACB_SVRTRUST) {
404 status = libnet_JoinSite(ctx, remote_ldb, r);
405 }
406 talloc_free(tmp_ctx);
407
408 return status;
409 }
410
411 /*
412 * do a domain join using DCERPC/SAMR calls
413 * - connect to the LSA pipe, to try and find out information about the domain
414 * - create a secondary connection to SAMR pipe
415 * - do a samr_Connect to get a policy handle
416 * - do a samr_LookupDomain to get the domain sid
417 * - do a samr_OpenDomain to get a domain handle
418 * - do a samr_CreateAccount to try and get a new account
419 *
420 * If that fails, do:
421 * - do a samr_LookupNames to get the users rid
422 * - do a samr_OpenUser to get a user handle
423 * - potentially delete and recreate the user
424 * - assert the account is of the right type with samrQueryUserInfo
425 *
426 * - call libnet_SetPassword_samr_handle to set the password,
427 * and pass a samr_UserInfo21 struct to set full_name and the account flags
428 *
429 * - do some ADS specific things when we join as Domain Controller,
430 * look at libnet_joinADSDomain() for the details
431 */
432 NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
433 {
434 TALLOC_CTX *tmp_ctx;
435
436 NTSTATUS status, cu_status;
437
438 struct libnet_RpcConnect *connect_with_info;
439 struct dcerpc_pipe *samr_pipe;
440
441 struct samr_Connect sc;
442 struct policy_handle p_handle;
443 struct samr_OpenDomain od;
444 struct policy_handle d_handle;
445 struct samr_LookupNames ln;
446 struct samr_Ids rids, types;
447 struct samr_OpenUser ou;
448 struct samr_CreateUser2 cu;
449 struct policy_handle *u_handle = NULL;
450 struct samr_QueryUserInfo qui;
451 union samr_UserInfo *uinfo;
452 struct samr_UserInfo21 u_info21;
453 union libnet_SetPassword r2;
454 struct samr_GetUserPwInfo pwp;
455 struct samr_PwInfo info;
456 struct lsa_String samr_account_name;
457
458 uint32_t acct_flags, old_acct_flags;
459 uint32_t rid, access_granted;
460 int policy_min_pw_len = 0;
461
462 struct dom_sid *account_sid = NULL;
463 const char *password_str = NULL;
464
465 r->out.error_string = NULL;
466 r2.samr_handle.out.error_string = NULL;
467
468 tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
469 if (!tmp_ctx) {
470 r->out.error_string = NULL;
471 return NT_STATUS_NO_MEMORY;
472 }
473
474 u_handle = talloc(tmp_ctx, struct policy_handle);
475 if (!u_handle) {
476 r->out.error_string = NULL;
477 talloc_free(tmp_ctx);
478 return NT_STATUS_NO_MEMORY;
479 }
480
481 connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
482 if (!connect_with_info) {
483 r->out.error_string = NULL;
484 talloc_free(tmp_ctx);
485 return NT_STATUS_NO_MEMORY;
486 }
487
488 /* prepare connect to the SAMR pipe of PDC */
489 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
490 connect_with_info->in.binding = NULL;
491 connect_with_info->in.name = r->in.domain_name;
492 } else {
493 connect_with_info->in.binding = r->in.binding;
494 connect_with_info->in.name = NULL;
495 }
496
497 /* This level makes a connection to the LSA pipe on the way,
498 * to get some useful bits of information about the domain */
499 connect_with_info->level = LIBNET_RPC_CONNECT_DC_INFO;
500 connect_with_info->in.dcerpc_iface = &ndr_table_samr;
501
502 /*
503 establish the SAMR connection
504 */
505 status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
506 if (!NT_STATUS_IS_OK(status)) {
507 if (r->in.binding) {
508 r->out.error_string = talloc_asprintf(mem_ctx,
509 "Connection to SAMR pipe of DC %s failed: %s",
510 r->in.binding, connect_with_info->out.error_string);
511 } else {
512 r->out.error_string = talloc_asprintf(mem_ctx,
513 "Connection to SAMR pipe of PDC for %s failed: %s",
514 r->in.domain_name, connect_with_info->out.error_string);
515 }
516 talloc_free(tmp_ctx);
517 return status;
518 }
519
520 samr_pipe = connect_with_info->out.dcerpc_pipe;
521
522 status = dcerpc_pipe_auth(tmp_ctx, &samr_pipe,
523 connect_with_info->out.dcerpc_pipe->binding,
524 &ndr_table_samr, ctx->cred, ctx->lp_ctx);
525 if (!NT_STATUS_IS_OK(status)) {
526 r->out.error_string = talloc_asprintf(mem_ctx,
527 "SAMR bind failed: %s",
528 nt_errstr(status));
529 talloc_free(tmp_ctx);
530 return status;
531 }
532
533 /* prepare samr_Connect */
534 ZERO_STRUCT(p_handle);
535 sc.in.system_name = NULL;
536 sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
537 sc.out.connect_handle = &p_handle;
538
539 /* 2. do a samr_Connect to get a policy handle */
540 status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
541 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
542 status = sc.out.result;
543 }
544 if (!NT_STATUS_IS_OK(status)) {
545 r->out.error_string = talloc_asprintf(mem_ctx,
546 "samr_Connect failed: %s",
547 nt_errstr(status));
548 talloc_free(tmp_ctx);
549 return status;
550 }
551
552 /* If this is a connection on ncacn_ip_tcp to Win2k3 SP1, we don't get back this useful info */
553 if (!connect_with_info->out.domain_name) {
554 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
555 connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, r->in.domain_name);
556 } else {
557 /* Bugger, we just lost our way to automatically find the domain name */
558 connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
559 connect_with_info->out.realm = talloc_strdup(tmp_ctx, lpcfg_realm(ctx->lp_ctx));
560 }
561 }
562
563 /* Perhaps we didn't get a SID above, because we are against ncacn_ip_tcp */
564 if (!connect_with_info->out.domain_sid) {
565 struct lsa_String name;
566 struct samr_LookupDomain l;
567 struct dom_sid2 *sid = NULL;
568 name.string = connect_with_info->out.domain_name;
569 l.in.connect_handle = &p_handle;
570 l.in.domain_name = &name;
571 l.out.sid = &sid;
572
573 status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
574 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
575 status = l.out.result;
576 }
577 if (!NT_STATUS_IS_OK(status)) {
578 r->out.error_string = talloc_asprintf(mem_ctx,
579 "SAMR LookupDomain failed: %s",
580 nt_errstr(status));
581 talloc_free(tmp_ctx);
582 return status;
583 }
584 connect_with_info->out.domain_sid = *l.out.sid;
585 }
586
587 /* prepare samr_OpenDomain */
588 ZERO_STRUCT(d_handle);
589 od.in.connect_handle = &p_handle;
590 od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
591 od.in.sid = connect_with_info->out.domain_sid;
592 od.out.domain_handle = &d_handle;
593
594 /* do a samr_OpenDomain to get a domain handle */
595 status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
596 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
597 status = od.out.result;
598 }
599 if (!NT_STATUS_IS_OK(status)) {
600 r->out.error_string = talloc_asprintf(mem_ctx,
601 "samr_OpenDomain for [%s] failed: %s",
602 dom_sid_string(tmp_ctx, connect_with_info->out.domain_sid),
603 nt_errstr(status));
604 talloc_free(tmp_ctx);
605 return status;
606 }
607
608 /* prepare samr_CreateUser2 */
609 ZERO_STRUCTP(u_handle);
610 cu.in.domain_handle = &d_handle;
611 cu.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
612 samr_account_name.string = r->in.account_name;
613 cu.in.account_name = &samr_account_name;
614 cu.in.acct_flags = r->in.acct_type;
615 cu.out.user_handle = u_handle;
616 cu.out.rid = &rid;
617 cu.out.access_granted = &access_granted;
618
619 /* do a samr_CreateUser2 to get an account handle, or an error */
620 cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
621 if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
622 cu_status = cu.out.result;
623 }
624 status = cu_status;
625 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
626 /* prepare samr_LookupNames */
627 ln.in.domain_handle = &d_handle;
628 ln.in.num_names = 1;
629 ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
630 ln.out.rids = &rids;
631 ln.out.types = &types;
632 if (!ln.in.names) {
633 r->out.error_string = NULL;
634 talloc_free(tmp_ctx);
635 return NT_STATUS_NO_MEMORY;
636 }
637 ln.in.names[0].string = r->in.account_name;
638
639 /* 5. do a samr_LookupNames to get the users rid */
640 status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
641 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
642 status = ln.out.result;
643 }
644 if (!NT_STATUS_IS_OK(status)) {
645 r->out.error_string = talloc_asprintf(mem_ctx,
646 "samr_LookupNames for [%s] failed: %s",
647 r->in.account_name,
648 nt_errstr(status));
649 talloc_free(tmp_ctx);
650 return status;
651 }
652
653 /* check if we got one RID for the user */
654 if (ln.out.rids->count != 1) {
655 r->out.error_string = talloc_asprintf(mem_ctx,
656 "samr_LookupNames for [%s] returns %d RIDs",
657 r->in.account_name, ln.out.rids->count);
658 talloc_free(tmp_ctx);
659 return NT_STATUS_INVALID_PARAMETER;
660 }
661
662 /* prepare samr_OpenUser */
663 ZERO_STRUCTP(u_handle);
664 ou.in.domain_handle = &d_handle;
665 ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
666 ou.in.rid = ln.out.rids->ids[0];
667 rid = ou.in.rid;
668 ou.out.user_handle = u_handle;
669
670 /* 6. do a samr_OpenUser to get a user handle */
671 status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
672 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
673 status = ou.out.result;
674 }
675 if (!NT_STATUS_IS_OK(status)) {
676 r->out.error_string = talloc_asprintf(mem_ctx,
677 "samr_OpenUser for [%s] failed: %s",
678 r->in.account_name,
679 nt_errstr(status));
680 talloc_free(tmp_ctx);
681 return status;
682 }
683
684 if (r->in.recreate_account) {
685 struct samr_DeleteUser d;
686 d.in.user_handle = u_handle;
687 d.out.user_handle = u_handle;
688 status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
689 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
690 status = d.out.result;
691 }
692 if (!NT_STATUS_IS_OK(status)) {
693 r->out.error_string = talloc_asprintf(mem_ctx,
694 "samr_DeleteUser (for recreate) of [%s] failed: %s",
695 r->in.account_name,
696 nt_errstr(status));
697 talloc_free(tmp_ctx);
698 return status;
699 }
700
701 /* We want to recreate, so delete and another samr_CreateUser2 */
702
703 /* &cu filled in above */
704 status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
705 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
706 status = cu.out.result;
707 }
708 if (!NT_STATUS_IS_OK(status)) {
709 r->out.error_string = talloc_asprintf(mem_ctx,
710 "samr_CreateUser2 (recreate) for [%s] failed: %s",
711 r->in.account_name, nt_errstr(status));
712 talloc_free(tmp_ctx);
713 return status;
714 }
715 }
716 } else if (!NT_STATUS_IS_OK(status)) {
717 r->out.error_string = talloc_asprintf(mem_ctx,
718 "samr_CreateUser2 for [%s] failed: %s",
719 r->in.account_name, nt_errstr(status));
720 talloc_free(tmp_ctx);
721 return status;
722 }
723
724 /* prepare samr_QueryUserInfo (get flags) */
725 qui.in.user_handle = u_handle;
726 qui.in.level = 16;
727 qui.out.info = &uinfo;
728
729 status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
730 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
731 status = qui.out.result;
732 }
733 if (!NT_STATUS_IS_OK(status)) {
734 r->out.error_string = talloc_asprintf(mem_ctx,
735 "samr_QueryUserInfo for [%s] failed: %s",
736 r->in.account_name,
737 nt_errstr(status));
738 talloc_free(tmp_ctx);
739 return status;
740 }
741
742 if (!uinfo) {
743 status = NT_STATUS_INVALID_PARAMETER;
744 r->out.error_string
745 = talloc_asprintf(mem_ctx,
746 "samr_QueryUserInfo failed to return qui.out.info for [%s]: %s",
747 r->in.account_name, nt_errstr(status));
748 talloc_free(tmp_ctx);
749 return status;
750 }
751
752 old_acct_flags = (uinfo->info16.acct_flags & (ACB_WSTRUST | ACB_SVRTRUST | ACB_DOMTRUST));
753 /* Possibly bail if the account is of the wrong type */
754 if (old_acct_flags
755 != r->in.acct_type) {
756 const char *old_account_type, *new_account_type;
757 switch (old_acct_flags) {
758 case ACB_WSTRUST:
759 old_account_type = "domain member (member)";
760 break;
761 case ACB_SVRTRUST:
762 old_account_type = "domain controller (bdc)";
763 break;
764 case ACB_DOMTRUST:
765 old_account_type = "trusted domain";
766 break;
767 default:
768 return NT_STATUS_INVALID_PARAMETER;
769 }
770 switch (r->in.acct_type) {
771 case ACB_WSTRUST:
772 new_account_type = "domain member (member)";
773 break;
774 case ACB_SVRTRUST:
775 new_account_type = "domain controller (bdc)";
776 break;
777 case ACB_DOMTRUST:
778 new_account_type = "trusted domain";
779 break;
780 default:
781 return NT_STATUS_INVALID_PARAMETER;
782 }
783
784 if (!NT_STATUS_EQUAL(cu_status, NT_STATUS_USER_EXISTS)) {
785 /* We created a new user, but they didn't come out the right type?!? */
786 r->out.error_string
787 = talloc_asprintf(mem_ctx,
788 "We asked to create a new machine account (%s) of type %s, "
789 "but we got an account of type %s. This is unexpected. "
790 "Perhaps delete the account and try again.",
791 r->in.account_name, new_account_type, old_account_type);
792 talloc_free(tmp_ctx);
793 return NT_STATUS_INVALID_PARAMETER;
794 } else {
795 /* The account is of the wrong type, so bail */
796
797 /* TODO: We should allow a --force option to override, and redo this from the top setting r.in.recreate_account */
798 r->out.error_string
799 = talloc_asprintf(mem_ctx,
800 "The machine account (%s) already exists in the domain %s, "
801 "but is a %s. You asked to join as a %s. Please delete "
802 "the account and try again.",
803 r->in.account_name, connect_with_info->out.domain_name, old_account_type, new_account_type);
804 talloc_free(tmp_ctx);
805 return NT_STATUS_USER_EXISTS;
806 }
807 } else {
808 acct_flags = uinfo->info16.acct_flags;
809 }
810
811 acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
812
813 /* Find out what password policy this user has */
814 pwp.in.user_handle = u_handle;
815 pwp.out.info = &info;
816
817 status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
818 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
819 status = pwp.out.result;
820 }
821 if (NT_STATUS_IS_OK(status)) {
822 policy_min_pw_len = pwp.out.info->min_password_length;
823 }
824
825 /* Grab a password of that minimum length */
826
827 password_str = generate_random_password(tmp_ctx, MAX(8, policy_min_pw_len), 255);
828
829 /* set full_name and reset flags */
830 ZERO_STRUCT(u_info21);
831 u_info21.full_name.string = r->in.account_name;
832 u_info21.acct_flags = acct_flags;
833 u_info21.fields_present = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
834
835 r2.samr_handle.level = LIBNET_SET_PASSWORD_SAMR_HANDLE;
836 r2.samr_handle.in.account_name = r->in.account_name;
837 r2.samr_handle.in.newpassword = password_str;
838 r2.samr_handle.in.user_handle = u_handle;
839 r2.samr_handle.in.dcerpc_pipe = samr_pipe;
840 r2.samr_handle.in.info21 = &u_info21;
841
842 status = libnet_SetPassword(ctx, tmp_ctx, &r2);
843 if (!NT_STATUS_IS_OK(status)) {
844 r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
845 talloc_free(tmp_ctx);
846 return status;
847 }
848
849 account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
850 if (!account_sid) {
851 r->out.error_string = NULL;
852 talloc_free(tmp_ctx);
853 return NT_STATUS_NO_MEMORY;
854 }
855
856 /* Finish out by pushing various bits of status data out for the caller to use */
857 r->out.join_password = password_str;
858 talloc_steal(mem_ctx, r->out.join_password);
859
860 r->out.domain_sid = connect_with_info->out.domain_sid;
861 talloc_steal(mem_ctx, r->out.domain_sid);
862
863 r->out.account_sid = account_sid;
864 talloc_steal(mem_ctx, r->out.account_sid);
865
866 r->out.domain_name = connect_with_info->out.domain_name;
867 talloc_steal(mem_ctx, r->out.domain_name);
868 r->out.realm = connect_with_info->out.realm;
869 talloc_steal(mem_ctx, r->out.realm);
870 r->out.samr_pipe = samr_pipe;
871 talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
872 r->out.samr_binding = samr_pipe->binding;
873 talloc_steal(mem_ctx, r->out.samr_binding);
874 r->out.user_handle = u_handle;
875 talloc_steal(mem_ctx, u_handle);
876 r->out.error_string = r2.samr_handle.out.error_string;
877 talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
878 r->out.kvno = 0;
879 r->out.server_dn_str = NULL;
880 talloc_free(tmp_ctx);
881
882 /* Now, if it was AD, then we want to start looking changing a
883 * few more things. Otherwise, we are done. */
884 if (r->out.realm) {
885 status = libnet_JoinADSDomain(ctx, r);
886 return status;
887 }
888
889 return status;
890 }
891
892 static NTSTATUS libnet_Join_primary_domain(struct libnet_context *ctx,
893 TALLOC_CTX *mem_ctx,
894 struct libnet_Join *r)
895 {
896 NTSTATUS status;
897 TALLOC_CTX *tmp_mem;
898 struct libnet_JoinDomain *r2;
899 struct provision_store_self_join_settings *set_secrets;
900 uint32_t acct_type = 0;
901 const char *account_name;
902 const char *netbios_name;
903 const char *error_string;
904
905 r->out.error_string = NULL;
906
907 tmp_mem = talloc_new(mem_ctx);
908 if (!tmp_mem) {
909 return NT_STATUS_NO_MEMORY;
910 }
911
912 r2 = talloc(tmp_mem, struct libnet_JoinDomain);
913 if (!r2) {
914 r->out.error_string = NULL;
915 talloc_free(tmp_mem);
916 return NT_STATUS_NO_MEMORY;
917 }
918
919 if (r->in.join_type == SEC_CHAN_BDC) {
920 acct_type = ACB_SVRTRUST;
921 } else if (r->in.join_type == SEC_CHAN_WKSTA) {
922 acct_type = ACB_WSTRUST;
923 } else {
924 r->out.error_string = NULL;
925 talloc_free(tmp_mem);
926 return NT_STATUS_INVALID_PARAMETER;
927 }
928
929 if (r->in.netbios_name != NULL) {
930 netbios_name = r->in.netbios_name;
931 } else {
932 netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
933 if (!netbios_name) {
934 r->out.error_string = NULL;
935 talloc_free(tmp_mem);
936 return NT_STATUS_NO_MEMORY;
937 }
938 }
939
940 account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
941 if (!account_name) {
942 r->out.error_string = NULL;
943 talloc_free(tmp_mem);
944 return NT_STATUS_NO_MEMORY;
945 }
946
947 /*
948 * join the domain
949 */
950 ZERO_STRUCTP(r2);
951 r2->in.domain_name = r->in.domain_name;
952 r2->in.account_name = account_name;
953 r2->in.netbios_name = netbios_name;
954 r2->in.level = LIBNET_JOINDOMAIN_AUTOMATIC;
955 r2->in.acct_type = acct_type;
956 r2->in.recreate_account = false;
957 status = libnet_JoinDomain(ctx, r2, r2);
958 if (!NT_STATUS_IS_OK(status)) {
959 r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
960 talloc_free(tmp_mem);
961 return status;
962 }
963
964 set_secrets = talloc(tmp_mem, struct provision_store_self_join_settings);
965 if (!set_secrets) {
966 r->out.error_string = NULL;
967 talloc_free(tmp_mem);
968 return NT_STATUS_NO_MEMORY;
969 }
970
971 ZERO_STRUCTP(set_secrets);
972 set_secrets->domain_name = r2->out.domain_name;
973 set_secrets->realm = r2->out.realm;
974 set_secrets->netbios_name = netbios_name;
975 set_secrets->secure_channel_type = r->in.join_type;
976 set_secrets->machine_password = r2->out.join_password;
977 set_secrets->key_version_number = r2->out.kvno;
978 set_secrets->domain_sid = r2->out.domain_sid;
979
980 status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
981 if (!NT_STATUS_IS_OK(status)) {
982 r->out.error_string = talloc_steal(mem_ctx, error_string);
983 talloc_free(tmp_mem);
984 return status;
985 }
986
987 /* move all out parameter to the callers TALLOC_CTX */
988 r->out.error_string = NULL;
989 r->out.join_password = r2->out.join_password;
990 talloc_reparent(r2, mem_ctx, r2->out.join_password);
991 r->out.domain_sid = r2->out.domain_sid;
992 talloc_reparent(r2, mem_ctx, r2->out.domain_sid);
993 r->out.domain_name = r2->out.domain_name;
994 talloc_reparent(r2, mem_ctx, r2->out.domain_name);
995 talloc_free(tmp_mem);
996 return NT_STATUS_OK;
997 }
998
999 NTSTATUS libnet_Join(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_Join *r)
1000 {
1001 switch (r->in.join_type) {
1002 case SEC_CHAN_WKSTA:
1003 return libnet_Join_primary_domain(ctx, mem_ctx, r);
1004 case SEC_CHAN_BDC:
1005 return libnet_Join_primary_domain(ctx, mem_ctx, r);
1006 case SEC_CHAN_DOMAIN:
1007 case SEC_CHAN_DNS_DOMAIN:
1008 case SEC_CHAN_NULL:
1009 break;
1010 }
1011
1012 r->out.error_string = talloc_asprintf(mem_ctx,
1013 "Invalid join type specified (%08X) attempting to join domain %s",
1014 r->in.join_type, r->in.domain_name);
1015 return NT_STATUS_INVALID_PARAMETER;
1016 }
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