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auth: Make new_server_id_task() static to auth_samba4
[Samba.git] / source4 / libnet / libnet_join.c
blobd9261c7949d57c9914f846f9c20695d3902523cd
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 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 = dcerpc_binding_dup(tmp_ctx, samr_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
105 /* DRSUAPI is only available on IP_TCP, and locally on NCALRPC */
106 if (drsuapi_binding->transport != NCALRPC) {
107 drsuapi_binding->transport = NCACN_IP_TCP;
108 }
109 drsuapi_binding->endpoint = NULL;
110 drsuapi_binding->flags |= DCERPC_SEAL;
111
112 status = dcerpc_pipe_connect_b(tmp_ctx,
113 &drsuapi_pipe,
114 drsuapi_binding,
115 &ndr_table_drsuapi,
116 ctx->cred,
117 ctx->event_ctx,
118 ctx->lp_ctx);
119 if (!NT_STATUS_IS_OK(status)) {
120 r->out.error_string = talloc_asprintf(r,
121 "Connection to DRSUAPI pipe of PDC of domain '%s' failed: %s",
122 r->out.domain_name,
123 nt_errstr(status));
124 talloc_free(tmp_ctx);
125 return status;
126 }
127
128 /* get a DRSUAPI pipe handle */
129 GUID_from_string(DRSUAPI_DS_BIND_GUID, &drsuapi_bind_guid);
130
131 r_drsuapi_bind.in.bind_guid = &drsuapi_bind_guid;
132 r_drsuapi_bind.in.bind_info = NULL;
133 r_drsuapi_bind.out.bind_handle = &drsuapi_bind_handle;
134
135 status = dcerpc_drsuapi_DsBind_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_drsuapi_bind);
136 if (!NT_STATUS_IS_OK(status)) {
137 r->out.error_string
138 = talloc_asprintf(r,
139 "dcerpc_drsuapi_DsBind failed - %s",
140 nt_errstr(status));
141 talloc_free(tmp_ctx);
142 return status;
143 } else if (!W_ERROR_IS_OK(r_drsuapi_bind.out.result)) {
144 r->out.error_string
145 = talloc_asprintf(r,
146 "DsBind failed - %s",
147 win_errstr(r_drsuapi_bind.out.result));
148 talloc_free(tmp_ctx);
149 return NT_STATUS_UNSUCCESSFUL;
150 }
151
152 /* Actually 'crack' the names */
153 ZERO_STRUCT(r_crack_names);
154 r_crack_names.in.bind_handle = &drsuapi_bind_handle;
155 r_crack_names.in.level = 1;
156 r_crack_names.in.req = talloc(r, union drsuapi_DsNameRequest);
157 if (!r_crack_names.in.req) {
158 r->out.error_string = NULL;
159 talloc_free(tmp_ctx);
160 return NT_STATUS_NO_MEMORY;
161 }
162 r_crack_names.in.req->req1.codepage = 1252; /* western european */
163 r_crack_names.in.req->req1.language = 0x00000407; /* german */
164 r_crack_names.in.req->req1.count = 1;
165 r_crack_names.in.req->req1.names = names;
166 r_crack_names.in.req->req1.format_flags = DRSUAPI_DS_NAME_FLAG_NO_FLAGS;
167 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_SID_OR_SID_HISTORY;
168 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
169 names[0].str = dom_sid_string(tmp_ctx, r->out.account_sid);
170 if (!names[0].str) {
171 r->out.error_string = NULL;
172 talloc_free(tmp_ctx);
173 return NT_STATUS_NO_MEMORY;
174 }
175
176 r_crack_names.out.ctr = talloc(r, union drsuapi_DsNameCtr);
177 r_crack_names.out.level_out = talloc(r, uint32_t);
178 if (!r_crack_names.out.ctr || !r_crack_names.out.level_out) {
179 r->out.error_string = NULL;
180 talloc_free(tmp_ctx);
181 return NT_STATUS_NO_MEMORY;
182 }
183
184 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
185 if (!NT_STATUS_IS_OK(status)) {
186 r->out.error_string
187 = talloc_asprintf(r,
188 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
189 names[0].str,
190 nt_errstr(status));
191 talloc_free(tmp_ctx);
192 return status;
193 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
194 r->out.error_string
195 = talloc_asprintf(r,
196 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
197 talloc_free(tmp_ctx);
198 return NT_STATUS_UNSUCCESSFUL;
199 } else if (*r_crack_names.out.level_out != 1
200 || !r_crack_names.out.ctr->ctr1
201 || r_crack_names.out.ctr->ctr1->count != 1) {
202 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
203 talloc_free(tmp_ctx);
204 return NT_STATUS_INVALID_PARAMETER;
205 } else if (r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
206 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: %d", r_crack_names.out.ctr->ctr1->array[0].status);
207 talloc_free(tmp_ctx);
208 return NT_STATUS_UNSUCCESSFUL;
209 } else if (r_crack_names.out.ctr->ctr1->array[0].result_name == NULL) {
210 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed: no result name");
211 talloc_free(tmp_ctx);
212 return NT_STATUS_INVALID_PARAMETER;
213 }
214
215 /* Store the DN of our machine account. */
216 account_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
217
218 /* Now we know the user's DN, open with LDAP, read and modify a few things */
219
220 remote_ldb_url = talloc_asprintf(tmp_ctx, "ldap://%s",
221 drsuapi_binding->target_hostname);
222 if (!remote_ldb_url) {
223 r->out.error_string = NULL;
224 talloc_free(tmp_ctx);
225 return NT_STATUS_NO_MEMORY;
226 }
227
228 remote_ldb = ldb_wrap_connect(tmp_ctx, ctx->event_ctx, ctx->lp_ctx,
229 remote_ldb_url,
230 NULL, ctx->cred, 0);
231 if (!remote_ldb) {
232 r->out.error_string = NULL;
233 talloc_free(tmp_ctx);
234 return NT_STATUS_UNSUCCESSFUL;
235 }
236
237 account_dn = ldb_dn_new(tmp_ctx, remote_ldb, account_dn_str);
238 if (account_dn == NULL) {
239 r->out.error_string = talloc_asprintf(r, "Invalid account dn: %s",
240 account_dn_str);
241 talloc_free(tmp_ctx);
242 return NT_STATUS_UNSUCCESSFUL;
243 }
244
245 /* search for the user's record */
246 ret = ldb_search(remote_ldb, tmp_ctx, &res,
247 account_dn, LDB_SCOPE_BASE, attrs, NULL);
248 if (ret != LDB_SUCCESS) {
249 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - %s",
250 account_dn_str, ldb_errstring(remote_ldb));
251 talloc_free(tmp_ctx);
252 return NT_STATUS_UNSUCCESSFUL;
253 }
254
255 if (res->count != 1) {
256 r->out.error_string = talloc_asprintf(r, "ldb_search for %s failed - found %d entries",
257 account_dn_str, res->count);
258 talloc_free(tmp_ctx);
259 return NT_STATUS_UNSUCCESSFUL;
260 }
261
262 /* Prepare a new message, for the modify */
263 msg = ldb_msg_new(tmp_ctx);
264 if (!msg) {
265 r->out.error_string = NULL;
266 talloc_free(tmp_ctx);
267 return NT_STATUS_NO_MEMORY;
268 }
269 msg->dn = res->msgs[0]->dn;
270
271 {
272 unsigned int i;
273 const char *service_principal_name[2];
274 const char *dns_host_name = strlower_talloc(msg,
275 talloc_asprintf(msg,
276 "%s.%s",
277 r->in.netbios_name,
278 realm));
279
280 if (!dns_host_name) {
281 r->out.error_string = NULL;
282 talloc_free(tmp_ctx);
283 return NT_STATUS_NO_MEMORY;
284 }
285
286 service_principal_name[0] = talloc_asprintf(msg, "HOST/%s",
287 dns_host_name);
288 service_principal_name[1] = talloc_asprintf(msg, "HOST/%s",
289 r->in.netbios_name);
290
291 for (i=0; i < ARRAY_SIZE(service_principal_name); i++) {
292 if (!service_principal_name[i]) {
293 r->out.error_string = NULL;
294 talloc_free(tmp_ctx);
295 return NT_STATUS_NO_MEMORY;
296 }
297 rtn = ldb_msg_add_string(msg, "servicePrincipalName",
298 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 = ldb_msg_add_string(msg, "dNSHostName", dns_host_name);
307 if (rtn != LDB_SUCCESS) {
308 r->out.error_string = NULL;
309 talloc_free(tmp_ctx);
310 return NT_STATUS_NO_MEMORY;
311 }
312
313 rtn = dsdb_replace(remote_ldb, msg, 0);
314 if (rtn != LDB_SUCCESS) {
315 r->out.error_string
316 = talloc_asprintf(r,
317 "Failed to replace entries on %s",
318 ldb_dn_get_linearized(msg->dn));
319 talloc_free(tmp_ctx);
320 return NT_STATUS_INTERNAL_DB_CORRUPTION;
321 }
322 }
323
324 msg = ldb_msg_new(tmp_ctx);
325 if (!msg) {
326 r->out.error_string = NULL;
327 talloc_free(tmp_ctx);
328 return NT_STATUS_NO_MEMORY;
329 }
330 msg->dn = res->msgs[0]->dn;
331
332 rtn = samdb_msg_add_uint(remote_ldb, msg, msg,
333 "msDS-SupportedEncryptionTypes", ENC_ALL_TYPES);
334 if (rtn != LDB_SUCCESS) {
335 r->out.error_string = NULL;
336 talloc_free(tmp_ctx);
337 return NT_STATUS_NO_MEMORY;
338 }
339
340 rtn = dsdb_replace(remote_ldb, msg, 0);
341 /* The remote server may not support this attribute, if it
342 * isn't a modern schema */
343 if (rtn != LDB_SUCCESS && rtn != LDB_ERR_NO_SUCH_ATTRIBUTE) {
344 r->out.error_string
345 = talloc_asprintf(r,
346 "Failed to replace msDS-SupportedEncryptionTypes on %s",
347 ldb_dn_get_linearized(msg->dn));
348 talloc_free(tmp_ctx);
349 return NT_STATUS_INTERNAL_DB_CORRUPTION;
350 }
351
352 /* DsCrackNames to find out the DN of the domain. */
353 r_crack_names.in.req->req1.format_offered = DRSUAPI_DS_NAME_FORMAT_NT4_ACCOUNT;
354 r_crack_names.in.req->req1.format_desired = DRSUAPI_DS_NAME_FORMAT_FQDN_1779;
355 names[0].str = talloc_asprintf(tmp_ctx, "%s\\", r->out.domain_name);
356 if (!names[0].str) {
357 r->out.error_string = NULL;
358 talloc_free(tmp_ctx);
359 return NT_STATUS_NO_MEMORY;
360 }
361
362 status = dcerpc_drsuapi_DsCrackNames_r(drsuapi_pipe->binding_handle, tmp_ctx, &r_crack_names);
363 if (!NT_STATUS_IS_OK(status)) {
364 r->out.error_string
365 = talloc_asprintf(r,
366 "dcerpc_drsuapi_DsCrackNames for [%s] failed - %s",
367 r->in.domain_name,
368 nt_errstr(status));
369 talloc_free(tmp_ctx);
370 return status;
371 } else if (!W_ERROR_IS_OK(r_crack_names.out.result)) {
372 r->out.error_string
373 = talloc_asprintf(r,
374 "DsCrackNames failed - %s", win_errstr(r_crack_names.out.result));
375 talloc_free(tmp_ctx);
376 return NT_STATUS_UNSUCCESSFUL;
377 } else if (*r_crack_names.out.level_out != 1
378 || !r_crack_names.out.ctr->ctr1
379 || r_crack_names.out.ctr->ctr1->count != 1
380 || !r_crack_names.out.ctr->ctr1->array[0].result_name
381 || r_crack_names.out.ctr->ctr1->array[0].status != DRSUAPI_DS_NAME_STATUS_OK) {
382 r->out.error_string = talloc_asprintf(r, "DsCrackNames failed");
383 talloc_free(tmp_ctx);
384 return NT_STATUS_UNSUCCESSFUL;
385 }
386
387 /* Store the account DN. */
388 r->out.account_dn_str = account_dn_str;
389 talloc_steal(r, account_dn_str);
390
391 /* Store the domain DN. */
392 r->out.domain_dn_str = r_crack_names.out.ctr->ctr1->array[0].result_name;
393 talloc_steal(r, r_crack_names.out.ctr->ctr1->array[0].result_name);
394
395 /* Store the KVNO of the account, critical for some kerberos
396 * operations */
397 r->out.kvno = ldb_msg_find_attr_as_uint(res->msgs[0], "msDS-KeyVersionNumber", 0);
398
399 /* Store the account GUID. */
400 r->out.account_guid = samdb_result_guid(res->msgs[0], "objectGUID");
401
402 if (r->in.acct_type == ACB_SVRTRUST) {
403 status = libnet_JoinSite(ctx, remote_ldb, r);
404 }
405 talloc_free(tmp_ctx);
406
407 return status;
408 }
409
410 /*
411 * do a domain join using DCERPC/SAMR calls
412 * - connect to the LSA pipe, to try and find out information about the domain
413 * - create a secondary connection to SAMR pipe
414 * - do a samr_Connect to get a policy handle
415 * - do a samr_LookupDomain to get the domain sid
416 * - do a samr_OpenDomain to get a domain handle
417 * - do a samr_CreateAccount to try and get a new account
418 *
419 * If that fails, do:
420 * - do a samr_LookupNames to get the users rid
421 * - do a samr_OpenUser to get a user handle
422 * - potentially delete and recreate the user
423 * - assert the account is of the right type with samrQueryUserInfo
424 *
425 * - call libnet_SetPassword_samr_handle to set the password,
426 * and pass a samr_UserInfo21 struct to set full_name and the account flags
427 *
428 * - do some ADS specific things when we join as Domain Controller,
429 * look at libnet_joinADSDomain() for the details
430 */
431 NTSTATUS libnet_JoinDomain(struct libnet_context *ctx, TALLOC_CTX *mem_ctx, struct libnet_JoinDomain *r)
432 {
433 TALLOC_CTX *tmp_ctx;
434
435 NTSTATUS status, cu_status;
436
437 struct libnet_RpcConnect *connect_with_info;
438 struct dcerpc_pipe *samr_pipe;
439
440 struct samr_Connect sc;
441 struct policy_handle p_handle;
442 struct samr_OpenDomain od;
443 struct policy_handle d_handle;
444 struct samr_LookupNames ln;
445 struct samr_Ids rids, types;
446 struct samr_OpenUser ou;
447 struct samr_CreateUser2 cu;
448 struct policy_handle *u_handle = NULL;
449 struct samr_QueryUserInfo qui;
450 union samr_UserInfo *uinfo;
451 struct samr_UserInfo21 u_info21;
452 union libnet_SetPassword r2;
453 struct samr_GetUserPwInfo pwp;
454 struct samr_PwInfo info;
455 struct lsa_String samr_account_name;
456
457 uint32_t acct_flags, old_acct_flags;
458 uint32_t rid, access_granted;
459 int policy_min_pw_len = 0;
460
461 struct dom_sid *account_sid = NULL;
462 const char *password_str = NULL;
463
464 r->out.error_string = NULL;
465 r2.samr_handle.out.error_string = NULL;
466
467 tmp_ctx = talloc_named(mem_ctx, 0, "libnet_Join temp context");
468 if (!tmp_ctx) {
469 r->out.error_string = NULL;
470 return NT_STATUS_NO_MEMORY;
471 }
472
473 u_handle = talloc(tmp_ctx, struct policy_handle);
474 if (!u_handle) {
475 r->out.error_string = NULL;
476 talloc_free(tmp_ctx);
477 return NT_STATUS_NO_MEMORY;
478 }
479
480 connect_with_info = talloc_zero(tmp_ctx, struct libnet_RpcConnect);
481 if (!connect_with_info) {
482 r->out.error_string = NULL;
483 talloc_free(tmp_ctx);
484 return NT_STATUS_NO_MEMORY;
485 }
486
487 /* prepare connect to the SAMR pipe of PDC */
488 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
489 connect_with_info->in.binding = NULL;
490 connect_with_info->in.name = r->in.domain_name;
491 } else {
492 connect_with_info->in.binding = r->in.binding;
493 connect_with_info->in.name = NULL;
494 }
495
496 /* This level makes a connection to the LSA pipe on the way,
497 * to get some useful bits of information about the domain */
498 connect_with_info->level = LIBNET_RPC_CONNECT_DC_INFO;
499 connect_with_info->in.dcerpc_iface = &ndr_table_samr;
500
501 /*
502 establish the SAMR connection
503 */
504 status = libnet_RpcConnect(ctx, tmp_ctx, connect_with_info);
505 if (!NT_STATUS_IS_OK(status)) {
506 if (r->in.binding) {
507 r->out.error_string = talloc_asprintf(mem_ctx,
508 "Connection to SAMR pipe of DC %s failed: %s",
509 r->in.binding, connect_with_info->out.error_string);
510 } else {
511 r->out.error_string = talloc_asprintf(mem_ctx,
512 "Connection to SAMR pipe of PDC for %s failed: %s",
513 r->in.domain_name, connect_with_info->out.error_string);
514 }
515 talloc_free(tmp_ctx);
516 return status;
517 }
518
519 samr_pipe = connect_with_info->out.dcerpc_pipe;
520
521 status = dcerpc_pipe_auth(tmp_ctx, &samr_pipe,
522 connect_with_info->out.dcerpc_pipe->binding,
523 &ndr_table_samr, ctx->cred, ctx->lp_ctx);
524 if (!NT_STATUS_IS_OK(status)) {
525 r->out.error_string = talloc_asprintf(mem_ctx,
526 "SAMR bind failed: %s",
527 nt_errstr(status));
528 talloc_free(tmp_ctx);
529 return status;
530 }
531
532 /* prepare samr_Connect */
533 ZERO_STRUCT(p_handle);
534 sc.in.system_name = NULL;
535 sc.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
536 sc.out.connect_handle = &p_handle;
537
538 /* 2. do a samr_Connect to get a policy handle */
539 status = dcerpc_samr_Connect_r(samr_pipe->binding_handle, tmp_ctx, &sc);
540 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(sc.out.result)) {
541 status = sc.out.result;
542 }
543 if (!NT_STATUS_IS_OK(status)) {
544 r->out.error_string = talloc_asprintf(mem_ctx,
545 "samr_Connect failed: %s",
546 nt_errstr(status));
547 talloc_free(tmp_ctx);
548 return status;
549 }
550
551 /* If this is a connection on ncacn_ip_tcp to Win2k3 SP1, we don't get back this useful info */
552 if (!connect_with_info->out.domain_name) {
553 if (r->in.level == LIBNET_JOINDOMAIN_AUTOMATIC) {
554 connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, r->in.domain_name);
555 } else {
556 /* Bugger, we just lost our way to automatically find the domain name */
557 connect_with_info->out.domain_name = talloc_strdup(tmp_ctx, lpcfg_workgroup(ctx->lp_ctx));
558 connect_with_info->out.realm = talloc_strdup(tmp_ctx, lpcfg_realm(ctx->lp_ctx));
559 }
560 }
561
562 /* Perhaps we didn't get a SID above, because we are against ncacn_ip_tcp */
563 if (!connect_with_info->out.domain_sid) {
564 struct lsa_String name;
565 struct samr_LookupDomain l;
566 struct dom_sid2 *sid = NULL;
567 name.string = connect_with_info->out.domain_name;
568 l.in.connect_handle = &p_handle;
569 l.in.domain_name = &name;
570 l.out.sid = &sid;
571
572 status = dcerpc_samr_LookupDomain_r(samr_pipe->binding_handle, tmp_ctx, &l);
573 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(l.out.result)) {
574 status = l.out.result;
575 }
576 if (!NT_STATUS_IS_OK(status)) {
577 r->out.error_string = talloc_asprintf(mem_ctx,
578 "SAMR LookupDomain failed: %s",
579 nt_errstr(status));
580 talloc_free(tmp_ctx);
581 return status;
582 }
583 connect_with_info->out.domain_sid = *l.out.sid;
584 }
585
586 /* prepare samr_OpenDomain */
587 ZERO_STRUCT(d_handle);
588 od.in.connect_handle = &p_handle;
589 od.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
590 od.in.sid = connect_with_info->out.domain_sid;
591 od.out.domain_handle = &d_handle;
592
593 /* do a samr_OpenDomain to get a domain handle */
594 status = dcerpc_samr_OpenDomain_r(samr_pipe->binding_handle, tmp_ctx, &od);
595 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(od.out.result)) {
596 status = od.out.result;
597 }
598 if (!NT_STATUS_IS_OK(status)) {
599 r->out.error_string = talloc_asprintf(mem_ctx,
600 "samr_OpenDomain for [%s] failed: %s",
601 dom_sid_string(tmp_ctx, connect_with_info->out.domain_sid),
602 nt_errstr(status));
603 talloc_free(tmp_ctx);
604 return status;
605 }
606
607 /* prepare samr_CreateUser2 */
608 ZERO_STRUCTP(u_handle);
609 cu.in.domain_handle = &d_handle;
610 cu.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
611 samr_account_name.string = r->in.account_name;
612 cu.in.account_name = &samr_account_name;
613 cu.in.acct_flags = r->in.acct_type;
614 cu.out.user_handle = u_handle;
615 cu.out.rid = &rid;
616 cu.out.access_granted = &access_granted;
617
618 /* do a samr_CreateUser2 to get an account handle, or an error */
619 cu_status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
620 if (NT_STATUS_IS_OK(cu_status) && !NT_STATUS_IS_OK(cu.out.result)) {
621 cu_status = cu.out.result;
622 }
623 status = cu_status;
624 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
625 /* prepare samr_LookupNames */
626 ln.in.domain_handle = &d_handle;
627 ln.in.num_names = 1;
628 ln.in.names = talloc_array(tmp_ctx, struct lsa_String, 1);
629 ln.out.rids = &rids;
630 ln.out.types = &types;
631 if (!ln.in.names) {
632 r->out.error_string = NULL;
633 talloc_free(tmp_ctx);
634 return NT_STATUS_NO_MEMORY;
635 }
636 ln.in.names[0].string = r->in.account_name;
637
638 /* 5. do a samr_LookupNames to get the users rid */
639 status = dcerpc_samr_LookupNames_r(samr_pipe->binding_handle, tmp_ctx, &ln);
640 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ln.out.result)) {
641 status = ln.out.result;
642 }
643 if (!NT_STATUS_IS_OK(status)) {
644 r->out.error_string = talloc_asprintf(mem_ctx,
645 "samr_LookupNames for [%s] failed: %s",
646 r->in.account_name,
647 nt_errstr(status));
648 talloc_free(tmp_ctx);
649 return status;
650 }
651
652 /* check if we got one RID for the user */
653 if (ln.out.rids->count != 1) {
654 r->out.error_string = talloc_asprintf(mem_ctx,
655 "samr_LookupNames for [%s] returns %d RIDs",
656 r->in.account_name, ln.out.rids->count);
657 talloc_free(tmp_ctx);
658 return NT_STATUS_INVALID_NETWORK_RESPONSE;
659 }
660
661 if (ln.out.types->count != 1) {
662 r->out.error_string = talloc_asprintf(mem_ctx,
663 "samr_LookupNames for [%s] returns %d RID TYPEs",
664 r->in.account_name, ln.out.types->count);
665 talloc_free(tmp_ctx);
666 return NT_STATUS_INVALID_NETWORK_RESPONSE;
667 }
668
669 /* prepare samr_OpenUser */
670 ZERO_STRUCTP(u_handle);
671 ou.in.domain_handle = &d_handle;
672 ou.in.access_mask = SEC_FLAG_MAXIMUM_ALLOWED;
673 ou.in.rid = ln.out.rids->ids[0];
674 rid = ou.in.rid;
675 ou.out.user_handle = u_handle;
676
677 /* 6. do a samr_OpenUser to get a user handle */
678 status = dcerpc_samr_OpenUser_r(samr_pipe->binding_handle, tmp_ctx, &ou);
679 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(ou.out.result)) {
680 status = ou.out.result;
681 }
682 if (!NT_STATUS_IS_OK(status)) {
683 r->out.error_string = talloc_asprintf(mem_ctx,
684 "samr_OpenUser for [%s] failed: %s",
685 r->in.account_name,
686 nt_errstr(status));
687 talloc_free(tmp_ctx);
688 return status;
689 }
690
691 if (r->in.recreate_account) {
692 struct samr_DeleteUser d;
693 d.in.user_handle = u_handle;
694 d.out.user_handle = u_handle;
695 status = dcerpc_samr_DeleteUser_r(samr_pipe->binding_handle, mem_ctx, &d);
696 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(d.out.result)) {
697 status = d.out.result;
698 }
699 if (!NT_STATUS_IS_OK(status)) {
700 r->out.error_string = talloc_asprintf(mem_ctx,
701 "samr_DeleteUser (for recreate) of [%s] failed: %s",
702 r->in.account_name,
703 nt_errstr(status));
704 talloc_free(tmp_ctx);
705 return status;
706 }
707
708 /* We want to recreate, so delete and another samr_CreateUser2 */
709
710 /* &cu filled in above */
711 status = dcerpc_samr_CreateUser2_r(samr_pipe->binding_handle, tmp_ctx, &cu);
712 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(cu.out.result)) {
713 status = cu.out.result;
714 }
715 if (!NT_STATUS_IS_OK(status)) {
716 r->out.error_string = talloc_asprintf(mem_ctx,
717 "samr_CreateUser2 (recreate) for [%s] failed: %s",
718 r->in.account_name, nt_errstr(status));
719 talloc_free(tmp_ctx);
720 return status;
721 }
722 }
723 } else if (!NT_STATUS_IS_OK(status)) {
724 r->out.error_string = talloc_asprintf(mem_ctx,
725 "samr_CreateUser2 for [%s] failed: %s",
726 r->in.account_name, nt_errstr(status));
727 talloc_free(tmp_ctx);
728 return status;
729 }
730
731 /* prepare samr_QueryUserInfo (get flags) */
732 qui.in.user_handle = u_handle;
733 qui.in.level = 16;
734 qui.out.info = &uinfo;
735
736 status = dcerpc_samr_QueryUserInfo_r(samr_pipe->binding_handle, tmp_ctx, &qui);
737 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(qui.out.result)) {
738 status = qui.out.result;
739 }
740 if (!NT_STATUS_IS_OK(status)) {
741 r->out.error_string = talloc_asprintf(mem_ctx,
742 "samr_QueryUserInfo for [%s] failed: %s",
743 r->in.account_name,
744 nt_errstr(status));
745 talloc_free(tmp_ctx);
746 return status;
747 }
748
749 if (!uinfo) {
750 status = NT_STATUS_INVALID_PARAMETER;
751 r->out.error_string
752 = talloc_asprintf(mem_ctx,
753 "samr_QueryUserInfo failed to return qui.out.info for [%s]: %s",
754 r->in.account_name, nt_errstr(status));
755 talloc_free(tmp_ctx);
756 return status;
757 }
758
759 old_acct_flags = (uinfo->info16.acct_flags & (ACB_WSTRUST | ACB_SVRTRUST | ACB_DOMTRUST));
760 /* Possibly bail if the account is of the wrong type */
761 if (old_acct_flags
762 != r->in.acct_type) {
763 const char *old_account_type, *new_account_type;
764 switch (old_acct_flags) {
765 case ACB_WSTRUST:
766 old_account_type = "domain member (member)";
767 break;
768 case ACB_SVRTRUST:
769 old_account_type = "domain controller (bdc)";
770 break;
771 case ACB_DOMTRUST:
772 old_account_type = "trusted domain";
773 break;
774 default:
775 return NT_STATUS_INVALID_PARAMETER;
776 }
777 switch (r->in.acct_type) {
778 case ACB_WSTRUST:
779 new_account_type = "domain member (member)";
780 break;
781 case ACB_SVRTRUST:
782 new_account_type = "domain controller (bdc)";
783 break;
784 case ACB_DOMTRUST:
785 new_account_type = "trusted domain";
786 break;
787 default:
788 return NT_STATUS_INVALID_PARAMETER;
789 }
790
791 if (!NT_STATUS_EQUAL(cu_status, NT_STATUS_USER_EXISTS)) {
792 /* We created a new user, but they didn't come out the right type?!? */
793 r->out.error_string
794 = talloc_asprintf(mem_ctx,
795 "We asked to create a new machine account (%s) of type %s, "
796 "but we got an account of type %s. This is unexpected. "
797 "Perhaps delete the account and try again.",
798 r->in.account_name, new_account_type, old_account_type);
799 talloc_free(tmp_ctx);
800 return NT_STATUS_INVALID_PARAMETER;
801 } else {
802 /* The account is of the wrong type, so bail */
803
804 /* TODO: We should allow a --force option to override, and redo this from the top setting r.in.recreate_account */
805 r->out.error_string
806 = talloc_asprintf(mem_ctx,
807 "The machine account (%s) already exists in the domain %s, "
808 "but is a %s. You asked to join as a %s. Please delete "
809 "the account and try again.",
810 r->in.account_name, connect_with_info->out.domain_name, old_account_type, new_account_type);
811 talloc_free(tmp_ctx);
812 return NT_STATUS_USER_EXISTS;
813 }
814 } else {
815 acct_flags = uinfo->info16.acct_flags;
816 }
817
818 acct_flags = (acct_flags & ~(ACB_DISABLED|ACB_PWNOTREQ));
819
820 /* Find out what password policy this user has */
821 pwp.in.user_handle = u_handle;
822 pwp.out.info = &info;
823
824 status = dcerpc_samr_GetUserPwInfo_r(samr_pipe->binding_handle, tmp_ctx, &pwp);
825 if (NT_STATUS_IS_OK(status) && !NT_STATUS_IS_OK(pwp.out.result)) {
826 status = pwp.out.result;
827 }
828 if (NT_STATUS_IS_OK(status)) {
829 policy_min_pw_len = pwp.out.info->min_password_length;
830 }
831
832 if (r->in.account_pass != NULL) {
833 password_str = talloc_strdup(tmp_ctx, r->in.account_pass);
834 } else {
835 /* Grab a password of that minimum length */
836 password_str = generate_random_password(tmp_ctx,
837 MAX(8, policy_min_pw_len), 255);
838 }
839 if (!password_str) {
840 r->out.error_string = NULL;
841 talloc_free(tmp_ctx);
842 return NT_STATUS_NO_MEMORY;
843 }
844
845 /* set full_name and reset flags */
846 ZERO_STRUCT(u_info21);
847 u_info21.full_name.string = r->in.account_name;
848 u_info21.acct_flags = acct_flags;
849 u_info21.fields_present = SAMR_FIELD_FULL_NAME | SAMR_FIELD_ACCT_FLAGS;
850
851 r2.samr_handle.level = LIBNET_SET_PASSWORD_SAMR_HANDLE;
852 r2.samr_handle.in.account_name = r->in.account_name;
853 r2.samr_handle.in.newpassword = password_str;
854 r2.samr_handle.in.user_handle = u_handle;
855 r2.samr_handle.in.dcerpc_pipe = samr_pipe;
856 r2.samr_handle.in.info21 = &u_info21;
857
858 status = libnet_SetPassword(ctx, tmp_ctx, &r2);
859 if (!NT_STATUS_IS_OK(status)) {
860 r->out.error_string = talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
861 talloc_free(tmp_ctx);
862 return status;
863 }
864
865 account_sid = dom_sid_add_rid(mem_ctx, connect_with_info->out.domain_sid, rid);
866 if (!account_sid) {
867 r->out.error_string = NULL;
868 talloc_free(tmp_ctx);
869 return NT_STATUS_NO_MEMORY;
870 }
871
872 /* Finish out by pushing various bits of status data out for the caller to use */
873 r->out.join_password = password_str;
874 talloc_steal(mem_ctx, r->out.join_password);
875
876 r->out.domain_sid = connect_with_info->out.domain_sid;
877 talloc_steal(mem_ctx, r->out.domain_sid);
878
879 r->out.account_sid = account_sid;
880 talloc_steal(mem_ctx, r->out.account_sid);
881
882 r->out.domain_name = connect_with_info->out.domain_name;
883 talloc_steal(mem_ctx, r->out.domain_name);
884 r->out.realm = connect_with_info->out.realm;
885 talloc_steal(mem_ctx, r->out.realm);
886 r->out.samr_pipe = samr_pipe;
887 talloc_reparent(tmp_ctx, mem_ctx, samr_pipe);
888 r->out.samr_binding = samr_pipe->binding;
889 talloc_steal(mem_ctx, r->out.samr_binding);
890 r->out.user_handle = u_handle;
891 talloc_steal(mem_ctx, u_handle);
892 r->out.error_string = r2.samr_handle.out.error_string;
893 talloc_steal(mem_ctx, r2.samr_handle.out.error_string);
894 r->out.kvno = 0;
895 r->out.server_dn_str = NULL;
896 talloc_free(tmp_ctx);
897
898 /* Now, if it was AD, then we want to start looking changing a
899 * few more things. Otherwise, we are done. */
900 if (r->out.realm) {
901 status = libnet_JoinADSDomain(ctx, r);
902 return status;
903 }
904
905 return status;
906 }
907
908 NTSTATUS libnet_Join_member(struct libnet_context *ctx,
909 TALLOC_CTX *mem_ctx,
910 struct libnet_Join_member *r)
911 {
912 NTSTATUS status;
913 TALLOC_CTX *tmp_mem;
914 struct libnet_JoinDomain *r2;
915 struct provision_store_self_join_settings *set_secrets;
916 uint32_t acct_type = 0;
917 const char *account_name;
918 const char *netbios_name;
919 const char *error_string;
920
921 r->out.error_string = NULL;
922
923 tmp_mem = talloc_new(mem_ctx);
924 if (!tmp_mem) {
925 return NT_STATUS_NO_MEMORY;
926 }
927
928 r2 = talloc_zero(tmp_mem, struct libnet_JoinDomain);
929 if (!r2) {
930 r->out.error_string = NULL;
931 talloc_free(tmp_mem);
932 return NT_STATUS_NO_MEMORY;
933 }
934
935 acct_type = ACB_WSTRUST;
936
937 if (r->in.netbios_name != NULL) {
938 netbios_name = r->in.netbios_name;
939 } else {
940 netbios_name = talloc_strdup(tmp_mem, lpcfg_netbios_name(ctx->lp_ctx));
941 if (!netbios_name) {
942 r->out.error_string = NULL;
943 talloc_free(tmp_mem);
944 return NT_STATUS_NO_MEMORY;
945 }
946 }
947
948 account_name = talloc_asprintf(tmp_mem, "%s$", netbios_name);
949 if (!account_name) {
950 r->out.error_string = NULL;
951 talloc_free(tmp_mem);
952 return NT_STATUS_NO_MEMORY;
953 }
954
955 /*
956 * join the domain
957 */
958 r2->in.domain_name = r->in.domain_name;
959 r2->in.account_name = account_name;
960 r2->in.netbios_name = netbios_name;
961 r2->in.level = LIBNET_JOINDOMAIN_AUTOMATIC;
962 r2->in.acct_type = acct_type;
963 r2->in.recreate_account = false;
964 r2->in.account_pass = r->in.account_pass;
965 status = libnet_JoinDomain(ctx, r2, r2);
966 if (!NT_STATUS_IS_OK(status)) {
967 r->out.error_string = talloc_steal(mem_ctx, r2->out.error_string);
968 talloc_free(tmp_mem);
969 return status;
970 }
971
972 set_secrets = talloc(tmp_mem, struct provision_store_self_join_settings);
973 if (!set_secrets) {
974 r->out.error_string = NULL;
975 talloc_free(tmp_mem);
976 return NT_STATUS_NO_MEMORY;
977 }
978
979 ZERO_STRUCTP(set_secrets);
980 set_secrets->domain_name = r2->out.domain_name;
981 set_secrets->realm = r2->out.realm;
982 set_secrets->netbios_name = netbios_name;
983 set_secrets->secure_channel_type = SEC_CHAN_WKSTA;
984 set_secrets->machine_password = r2->out.join_password;
985 set_secrets->key_version_number = r2->out.kvno;
986 set_secrets->domain_sid = r2->out.domain_sid;
987
988 status = provision_store_self_join(ctx, ctx->lp_ctx, ctx->event_ctx, set_secrets, &error_string);
989 if (!NT_STATUS_IS_OK(status)) {
990 r->out.error_string = talloc_steal(mem_ctx, error_string);
991 talloc_free(tmp_mem);
992 return status;
993 }
994
995 /* move all out parameter to the callers TALLOC_CTX */
996 r->out.error_string = NULL;
997 r->out.join_password = r2->out.join_password;
998 talloc_reparent(r2, mem_ctx, r2->out.join_password);
999 r->out.domain_sid = r2->out.domain_sid;
1000 talloc_reparent(r2, mem_ctx, r2->out.domain_sid);
1001 r->out.domain_name = r2->out.domain_name;
1002 talloc_reparent(r2, mem_ctx, r2->out.domain_name);
1003 talloc_free(tmp_mem);
1004 return NT_STATUS_OK;
1005 }
1006
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