Fix NETLOGON credential chain with Windows 2008 all over the place.
[jra/samba/.git] / source3 / libnet / libnet_join.c
1 /*
2  *  Unix SMB/CIFS implementation.
3  *  libnet Join Support
4  *  Copyright (C) Gerald (Jerry) Carter 2006
5  *  Copyright (C) Guenther Deschner 2007-2008
6  *
7  *  This program is free software; you can redistribute it and/or modify
8  *  it under the terms of the GNU General Public License as published by
9  *  the Free Software Foundation; either version 3 of the License, or
10  *  (at your option) any later version.
11  *
12  *  This program is distributed in the hope that it will be useful,
13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  *  GNU General Public License for more details.
16  *
17  *  You should have received a copy of the GNU General Public License
18  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
19  */
20
21 #include "includes.h"
22 #include "libnet/libnet.h"
23
24 /****************************************************************
25 ****************************************************************/
26
27 #define LIBNET_JOIN_DUMP_CTX(ctx, r, f) \
28         do { \
29                 char *str = NULL; \
30                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_JoinCtx, f, r); \
31                 DEBUG(1,("libnet_Join:\n%s", str)); \
32                 TALLOC_FREE(str); \
33         } while (0)
34
35 #define LIBNET_JOIN_IN_DUMP_CTX(ctx, r) \
36         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
37 #define LIBNET_JOIN_OUT_DUMP_CTX(ctx, r) \
38         LIBNET_JOIN_DUMP_CTX(ctx, r, NDR_OUT)
39
40 #define LIBNET_UNJOIN_DUMP_CTX(ctx, r, f) \
41         do { \
42                 char *str = NULL; \
43                 str = NDR_PRINT_FUNCTION_STRING(ctx, libnet_UnjoinCtx, f, r); \
44                 DEBUG(1,("libnet_Unjoin:\n%s", str)); \
45                 TALLOC_FREE(str); \
46         } while (0)
47
48 #define LIBNET_UNJOIN_IN_DUMP_CTX(ctx, r) \
49         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_IN | NDR_SET_VALUES)
50 #define LIBNET_UNJOIN_OUT_DUMP_CTX(ctx, r) \
51         LIBNET_UNJOIN_DUMP_CTX(ctx, r, NDR_OUT)
52
53 #define W_ERROR_NOT_OK_GOTO_DONE(x) do { \
54         if (!W_ERROR_IS_OK(x)) {\
55                 goto done;\
56         }\
57 } while (0)
58
59 /****************************************************************
60 ****************************************************************/
61
62 static void libnet_join_set_error_string(TALLOC_CTX *mem_ctx,
63                                          struct libnet_JoinCtx *r,
64                                          const char *format, ...)
65 {
66         va_list args;
67
68         if (r->out.error_string) {
69                 return;
70         }
71
72         va_start(args, format);
73         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
74         va_end(args);
75 }
76
77 /****************************************************************
78 ****************************************************************/
79
80 static void libnet_unjoin_set_error_string(TALLOC_CTX *mem_ctx,
81                                            struct libnet_UnjoinCtx *r,
82                                            const char *format, ...)
83 {
84         va_list args;
85
86         if (r->out.error_string) {
87                 return;
88         }
89
90         va_start(args, format);
91         r->out.error_string = talloc_vasprintf(mem_ctx, format, args);
92         va_end(args);
93 }
94
95 #ifdef WITH_ADS
96
97 /****************************************************************
98 ****************************************************************/
99
100 static ADS_STATUS libnet_connect_ads(const char *dns_domain_name,
101                                      const char *netbios_domain_name,
102                                      const char *dc_name,
103                                      const char *user_name,
104                                      const char *password,
105                                      ADS_STRUCT **ads)
106 {
107         ADS_STATUS status;
108         ADS_STRUCT *my_ads = NULL;
109
110         my_ads = ads_init(dns_domain_name,
111                           netbios_domain_name,
112                           dc_name);
113         if (!my_ads) {
114                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
115         }
116
117         if (user_name) {
118                 SAFE_FREE(my_ads->auth.user_name);
119                 my_ads->auth.user_name = SMB_STRDUP(user_name);
120         }
121
122         if (password) {
123                 SAFE_FREE(my_ads->auth.password);
124                 my_ads->auth.password = SMB_STRDUP(password);
125         }
126
127         status = ads_connect(my_ads);
128         if (!ADS_ERR_OK(status)) {
129                 ads_destroy(&my_ads);
130                 return status;
131         }
132
133         *ads = my_ads;
134         return ADS_SUCCESS;
135 }
136
137 /****************************************************************
138 ****************************************************************/
139
140 static ADS_STATUS libnet_join_connect_ads(TALLOC_CTX *mem_ctx,
141                                           struct libnet_JoinCtx *r)
142 {
143         ADS_STATUS status;
144
145         status = libnet_connect_ads(r->in.domain_name,
146                                     r->in.domain_name,
147                                     r->in.dc_name,
148                                     r->in.admin_account,
149                                     r->in.admin_password,
150                                     &r->in.ads);
151         if (!ADS_ERR_OK(status)) {
152                 libnet_join_set_error_string(mem_ctx, r,
153                         "failed to connect to AD: %s",
154                         ads_errstr(status));
155                 return status;
156         }
157
158         if (!r->out.netbios_domain_name) {
159                 r->out.netbios_domain_name = talloc_strdup(mem_ctx,
160                                                            r->in.ads->server.workgroup);
161                 ADS_ERROR_HAVE_NO_MEMORY(r->out.netbios_domain_name);
162         }
163
164         if (!r->out.dns_domain_name) {
165                 r->out.dns_domain_name = talloc_strdup(mem_ctx,
166                                                        r->in.ads->config.realm);
167                 ADS_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
168         }
169
170         r->out.domain_is_ad = true;
171
172         return ADS_SUCCESS;
173 }
174
175 /****************************************************************
176 ****************************************************************/
177
178 static ADS_STATUS libnet_unjoin_connect_ads(TALLOC_CTX *mem_ctx,
179                                             struct libnet_UnjoinCtx *r)
180 {
181         ADS_STATUS status;
182
183         status = libnet_connect_ads(r->in.domain_name,
184                                     r->in.domain_name,
185                                     r->in.dc_name,
186                                     r->in.admin_account,
187                                     r->in.admin_password,
188                                     &r->in.ads);
189         if (!ADS_ERR_OK(status)) {
190                 libnet_unjoin_set_error_string(mem_ctx, r,
191                         "failed to connect to AD: %s",
192                         ads_errstr(status));
193         }
194
195         return status;
196 }
197
198 /****************************************************************
199  join a domain using ADS (LDAP mods)
200 ****************************************************************/
201
202 static ADS_STATUS libnet_join_precreate_machine_acct(TALLOC_CTX *mem_ctx,
203                                                      struct libnet_JoinCtx *r)
204 {
205         ADS_STATUS status;
206         LDAPMessage *res = NULL;
207         const char *attrs[] = { "dn", NULL };
208         bool moved = false;
209
210         status = ads_check_ou_dn(mem_ctx, r->in.ads, r->in.account_ou);
211         if (!ADS_ERR_OK(status)) {
212                 return status;
213         }
214
215         status = ads_search_dn(r->in.ads, &res, r->in.account_ou, attrs);
216         if (!ADS_ERR_OK(status)) {
217                 return status;
218         }
219
220         if (ads_count_replies(r->in.ads, res) != 1) {
221                 ads_msgfree(r->in.ads, res);
222                 return ADS_ERROR_LDAP(LDAP_NO_SUCH_OBJECT);
223         }
224
225         ads_msgfree(r->in.ads, res);
226
227         /* Attempt to create the machine account and bail if this fails.
228            Assume that the admin wants exactly what they requested */
229
230         status = ads_create_machine_acct(r->in.ads,
231                                          r->in.machine_name,
232                                          r->in.account_ou);
233
234         if (ADS_ERR_OK(status)) {
235                 DEBUG(1,("machine account creation created\n"));
236                 return status;
237         } else  if ((status.error_type == ENUM_ADS_ERROR_LDAP) &&
238                     (status.err.rc == LDAP_ALREADY_EXISTS)) {
239                 status = ADS_SUCCESS;
240         }
241
242         if (!ADS_ERR_OK(status)) {
243                 DEBUG(1,("machine account creation failed\n"));
244                 return status;
245         }
246
247         status = ads_move_machine_acct(r->in.ads,
248                                        r->in.machine_name,
249                                        r->in.account_ou,
250                                        &moved);
251         if (!ADS_ERR_OK(status)) {
252                 DEBUG(1,("failure to locate/move pre-existing "
253                         "machine account\n"));
254                 return status;
255         }
256
257         DEBUG(1,("The machine account %s the specified OU.\n",
258                 moved ? "was moved into" : "already exists in"));
259
260         return status;
261 }
262
263 /****************************************************************
264 ****************************************************************/
265
266 static ADS_STATUS libnet_unjoin_remove_machine_acct(TALLOC_CTX *mem_ctx,
267                                                     struct libnet_UnjoinCtx *r)
268 {
269         ADS_STATUS status;
270
271         if (!r->in.ads) {
272                 return libnet_unjoin_connect_ads(mem_ctx, r);
273         }
274
275         status = ads_leave_realm(r->in.ads, r->in.machine_name);
276         if (!ADS_ERR_OK(status)) {
277                 libnet_unjoin_set_error_string(mem_ctx, r,
278                         "failed to leave realm: %s",
279                         ads_errstr(status));
280                 return status;
281         }
282
283         return ADS_SUCCESS;
284 }
285
286 /****************************************************************
287 ****************************************************************/
288
289 static ADS_STATUS libnet_join_find_machine_acct(TALLOC_CTX *mem_ctx,
290                                                 struct libnet_JoinCtx *r)
291 {
292         ADS_STATUS status;
293         LDAPMessage *res = NULL;
294         char *dn = NULL;
295
296         if (!r->in.machine_name) {
297                 return ADS_ERROR(LDAP_NO_MEMORY);
298         }
299
300         status = ads_find_machine_acct(r->in.ads,
301                                        &res,
302                                        r->in.machine_name);
303         if (!ADS_ERR_OK(status)) {
304                 return status;
305         }
306
307         if (ads_count_replies(r->in.ads, res) != 1) {
308                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
309                 goto done;
310         }
311
312         dn = ads_get_dn(r->in.ads, res);
313         if (!dn) {
314                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
315                 goto done;
316         }
317
318         r->out.dn = talloc_strdup(mem_ctx, dn);
319         if (!r->out.dn) {
320                 status = ADS_ERROR_LDAP(LDAP_NO_MEMORY);
321                 goto done;
322         }
323
324  done:
325         ads_msgfree(r->in.ads, res);
326         ads_memfree(r->in.ads, dn);
327
328         return status;
329 }
330
331 /****************************************************************
332  Set a machines dNSHostName and servicePrincipalName attributes
333 ****************************************************************/
334
335 static ADS_STATUS libnet_join_set_machine_spn(TALLOC_CTX *mem_ctx,
336                                               struct libnet_JoinCtx *r)
337 {
338         ADS_STATUS status;
339         ADS_MODLIST mods;
340         fstring my_fqdn;
341         const char *spn_array[3] = {NULL, NULL, NULL};
342         char *spn = NULL;
343
344         /* Find our DN */
345
346         status = libnet_join_find_machine_acct(mem_ctx, r);
347         if (!ADS_ERR_OK(status)) {
348                 return status;
349         }
350
351         /* Windows only creates HOST/shortname & HOST/fqdn. */
352
353         spn = talloc_asprintf(mem_ctx, "HOST/%s", r->in.machine_name);
354         if (!spn) {
355                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
356         }
357         strupper_m(spn);
358         spn_array[0] = spn;
359
360         if (name_to_fqdn(my_fqdn, r->in.machine_name) &&
361             !strequal(my_fqdn, r->in.machine_name)) {
362
363                 strlower_m(my_fqdn);
364                 spn = talloc_asprintf(mem_ctx, "HOST/%s", my_fqdn);
365                 if (!spn) {
366                         return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
367                 }
368                 spn_array[1] = spn;
369         }
370
371         mods = ads_init_mods(mem_ctx);
372         if (!mods) {
373                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
374         }
375
376         /* fields of primary importance */
377
378         status = ads_mod_str(mem_ctx, &mods, "dNSHostName", my_fqdn);
379         if (!ADS_ERR_OK(status)) {
380                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
381         }
382
383         status = ads_mod_strlist(mem_ctx, &mods, "servicePrincipalName",
384                                  spn_array);
385         if (!ADS_ERR_OK(status)) {
386                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
387         }
388
389         return ads_gen_mod(r->in.ads, r->out.dn, mods);
390 }
391
392 /****************************************************************
393 ****************************************************************/
394
395 static ADS_STATUS libnet_join_set_machine_upn(TALLOC_CTX *mem_ctx,
396                                               struct libnet_JoinCtx *r)
397 {
398         ADS_STATUS status;
399         ADS_MODLIST mods;
400
401         if (!r->in.create_upn) {
402                 return ADS_SUCCESS;
403         }
404
405         /* Find our DN */
406
407         status = libnet_join_find_machine_acct(mem_ctx, r);
408         if (!ADS_ERR_OK(status)) {
409                 return status;
410         }
411
412         if (!r->in.upn) {
413                 r->in.upn = talloc_asprintf(mem_ctx,
414                                             "host/%s@%s",
415                                             r->in.machine_name,
416                                             r->out.dns_domain_name);
417                 if (!r->in.upn) {
418                         return ADS_ERROR(LDAP_NO_MEMORY);
419                 }
420         }
421
422         /* now do the mods */
423
424         mods = ads_init_mods(mem_ctx);
425         if (!mods) {
426                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
427         }
428
429         /* fields of primary importance */
430
431         status = ads_mod_str(mem_ctx, &mods, "userPrincipalName", r->in.upn);
432         if (!ADS_ERR_OK(status)) {
433                 return ADS_ERROR_LDAP(LDAP_NO_MEMORY);
434         }
435
436         return ads_gen_mod(r->in.ads, r->out.dn, mods);
437 }
438
439
440 /****************************************************************
441 ****************************************************************/
442
443 static ADS_STATUS libnet_join_set_os_attributes(TALLOC_CTX *mem_ctx,
444                                                 struct libnet_JoinCtx *r)
445 {
446         ADS_STATUS status;
447         ADS_MODLIST mods;
448         char *os_sp = NULL;
449
450         if (!r->in.os_name || !r->in.os_version ) {
451                 return ADS_SUCCESS;
452         }
453
454         /* Find our DN */
455
456         status = libnet_join_find_machine_acct(mem_ctx, r);
457         if (!ADS_ERR_OK(status)) {
458                 return status;
459         }
460
461         /* now do the mods */
462
463         mods = ads_init_mods(mem_ctx);
464         if (!mods) {
465                 return ADS_ERROR(LDAP_NO_MEMORY);
466         }
467
468         os_sp = talloc_asprintf(mem_ctx, "Samba %s", SAMBA_VERSION_STRING);
469         if (!os_sp) {
470                 return ADS_ERROR(LDAP_NO_MEMORY);
471         }
472
473         /* fields of primary importance */
474
475         status = ads_mod_str(mem_ctx, &mods, "operatingSystem",
476                              r->in.os_name);
477         if (!ADS_ERR_OK(status)) {
478                 return status;
479         }
480
481         status = ads_mod_str(mem_ctx, &mods, "operatingSystemVersion",
482                              r->in.os_version);
483         if (!ADS_ERR_OK(status)) {
484                 return status;
485         }
486
487         status = ads_mod_str(mem_ctx, &mods, "operatingSystemServicePack",
488                              os_sp);
489         if (!ADS_ERR_OK(status)) {
490                 return status;
491         }
492
493         return ads_gen_mod(r->in.ads, r->out.dn, mods);
494 }
495
496 /****************************************************************
497 ****************************************************************/
498
499 static bool libnet_join_create_keytab(TALLOC_CTX *mem_ctx,
500                                       struct libnet_JoinCtx *r)
501 {
502         if (!lp_use_kerberos_keytab()) {
503                 return true;
504         }
505
506         if (!ads_keytab_create_default(r->in.ads)) {
507                 return false;
508         }
509
510         return true;
511 }
512
513 /****************************************************************
514 ****************************************************************/
515
516 static bool libnet_join_derive_salting_principal(TALLOC_CTX *mem_ctx,
517                                                  struct libnet_JoinCtx *r)
518 {
519         uint32_t domain_func;
520         ADS_STATUS status;
521         const char *salt = NULL;
522         char *std_salt = NULL;
523
524         status = ads_domain_func_level(r->in.ads, &domain_func);
525         if (!ADS_ERR_OK(status)) {
526                 libnet_join_set_error_string(mem_ctx, r,
527                         "failed to determine domain functional level: %s",
528                         ads_errstr(status));
529                 return false;
530         }
531
532         /* go ahead and setup the default salt */
533
534         std_salt = kerberos_standard_des_salt();
535         if (!std_salt) {
536                 libnet_join_set_error_string(mem_ctx, r,
537                         "failed to obtain standard DES salt");
538                 return false;
539         }
540
541         salt = talloc_strdup(mem_ctx, std_salt);
542         if (!salt) {
543                 return false;
544         }
545
546         SAFE_FREE(std_salt);
547
548         /* if it's a Windows functional domain, we have to look for the UPN */
549
550         if (domain_func == DS_DOMAIN_FUNCTION_2000) {
551                 char *upn;
552
553                 upn = ads_get_upn(r->in.ads, mem_ctx,
554                                   r->in.machine_name);
555                 if (upn) {
556                         salt = talloc_strdup(mem_ctx, upn);
557                         if (!salt) {
558                                 return false;
559                         }
560                 }
561         }
562
563         return kerberos_secrets_store_des_salt(salt);
564 }
565
566 /****************************************************************
567 ****************************************************************/
568
569 static ADS_STATUS libnet_join_post_processing_ads(TALLOC_CTX *mem_ctx,
570                                                   struct libnet_JoinCtx *r)
571 {
572         ADS_STATUS status;
573
574         if (!r->in.ads) {
575                 status = libnet_join_connect_ads(mem_ctx, r);
576                 if (!ADS_ERR_OK(status)) {
577                         return status;
578                 }
579         }
580
581         status = libnet_join_set_machine_spn(mem_ctx, r);
582         if (!ADS_ERR_OK(status)) {
583                 libnet_join_set_error_string(mem_ctx, r,
584                         "failed to set machine spn: %s",
585                         ads_errstr(status));
586                 return status;
587         }
588
589         status = libnet_join_set_os_attributes(mem_ctx, r);
590         if (!ADS_ERR_OK(status)) {
591                 libnet_join_set_error_string(mem_ctx, r,
592                         "failed to set machine os attributes: %s",
593                         ads_errstr(status));
594                 return status;
595         }
596
597         status = libnet_join_set_machine_upn(mem_ctx, r);
598         if (!ADS_ERR_OK(status)) {
599                 libnet_join_set_error_string(mem_ctx, r,
600                         "failed to set machine upn: %s",
601                         ads_errstr(status));
602                 return status;
603         }
604
605         if (!libnet_join_derive_salting_principal(mem_ctx, r)) {
606                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
607         }
608
609         if (!libnet_join_create_keytab(mem_ctx, r)) {
610                 libnet_join_set_error_string(mem_ctx, r,
611                         "failed to create kerberos keytab");
612                 return ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
613         }
614
615         return ADS_SUCCESS;
616 }
617 #endif /* WITH_ADS */
618
619 /****************************************************************
620  Store the machine password and domain SID
621 ****************************************************************/
622
623 static bool libnet_join_joindomain_store_secrets(TALLOC_CTX *mem_ctx,
624                                                  struct libnet_JoinCtx *r)
625 {
626         if (!secrets_store_domain_sid(r->out.netbios_domain_name,
627                                       r->out.domain_sid))
628         {
629                 DEBUG(1,("Failed to save domain sid\n"));
630                 return false;
631         }
632
633         if (!secrets_store_machine_password(r->in.machine_password,
634                                             r->out.netbios_domain_name,
635                                             r->in.secure_channel_type))
636         {
637                 DEBUG(1,("Failed to save machine password\n"));
638                 return false;
639         }
640
641         return true;
642 }
643
644 /****************************************************************
645  Do the domain join
646 ****************************************************************/
647
648 static NTSTATUS libnet_join_joindomain_rpc(TALLOC_CTX *mem_ctx,
649                                            struct libnet_JoinCtx *r)
650 {
651         struct cli_state *cli = NULL;
652         struct rpc_pipe_client *pipe_hnd = NULL;
653         POLICY_HND sam_pol, domain_pol, user_pol, lsa_pol;
654         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
655         char *acct_name;
656         struct lsa_String lsa_acct_name;
657         uint32_t user_rid;
658         uint32_t acct_flags = ACB_WSTRUST;
659         uchar pwbuf[532];
660         struct MD5Context md5ctx;
661         uchar md5buffer[16];
662         DATA_BLOB digested_session_key;
663         uchar md4_trust_password[16];
664         union lsa_PolicyInformation *info = NULL;
665         struct samr_Ids user_rids;
666         struct samr_Ids name_types;
667         union samr_UserInfo user_info;
668
669         if (!r->in.machine_password) {
670                 r->in.machine_password = talloc_strdup(mem_ctx, generate_random_str(DEFAULT_TRUST_ACCOUNT_PASSWORD_LENGTH));
671                 NT_STATUS_HAVE_NO_MEMORY(r->in.machine_password);
672         }
673
674         status = cli_full_connection(&cli, NULL,
675                                      r->in.dc_name,
676                                      NULL, 0,
677                                      "IPC$", "IPC",
678                                      r->in.admin_account,
679                                      NULL,
680                                      r->in.admin_password,
681                                      0,
682                                      Undefined, NULL);
683
684         if (!NT_STATUS_IS_OK(status)) {
685                 goto done;
686         }
687
688         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_LSARPC, &status);
689         if (!pipe_hnd) {
690                 DEBUG(0,("Error connecting to LSA pipe. Error was %s\n",
691                         nt_errstr(status)));
692                 goto done;
693         }
694
695         status = rpccli_lsa_open_policy(pipe_hnd, mem_ctx, true,
696                                         SEC_RIGHTS_MAXIMUM_ALLOWED, &lsa_pol);
697         if (!NT_STATUS_IS_OK(status)) {
698                 goto done;
699         }
700
701         status = rpccli_lsa_QueryInfoPolicy2(pipe_hnd, mem_ctx,
702                                              &lsa_pol,
703                                              LSA_POLICY_INFO_DNS,
704                                              &info);
705         if (NT_STATUS_IS_OK(status)) {
706                 r->out.domain_is_ad = true;
707                 r->out.netbios_domain_name = info->dns.name.string;
708                 r->out.dns_domain_name = info->dns.dns_domain.string;
709                 r->out.domain_sid = info->dns.sid;
710         }
711
712         if (!NT_STATUS_IS_OK(status)) {
713                 status = rpccli_lsa_QueryInfoPolicy(pipe_hnd, mem_ctx,
714                                                     &lsa_pol,
715                                                     LSA_POLICY_INFO_ACCOUNT_DOMAIN,
716                                                     &info);
717                 if (!NT_STATUS_IS_OK(status)) {
718                         goto done;
719                 }
720
721                 r->out.netbios_domain_name = info->account_domain.name.string;
722                 r->out.domain_sid = info->account_domain.sid;
723         }
724
725         rpccli_lsa_Close(pipe_hnd, mem_ctx, &lsa_pol);
726         cli_rpc_pipe_close(pipe_hnd);
727
728         /* Open the domain */
729
730         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
731         if (!pipe_hnd) {
732                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
733                         nt_errstr(status)));
734                 goto done;
735         }
736
737         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
738                                       pipe_hnd->cli->desthost,
739                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
740                                       &sam_pol);
741         if (!NT_STATUS_IS_OK(status)) {
742                 goto done;
743         }
744
745         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
746                                         &sam_pol,
747                                         SEC_RIGHTS_MAXIMUM_ALLOWED,
748                                         r->out.domain_sid,
749                                         &domain_pol);
750         if (!NT_STATUS_IS_OK(status)) {
751                 goto done;
752         }
753
754         /* Create domain user */
755
756         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
757         strlower_m(acct_name);
758
759         init_lsa_String(&lsa_acct_name, acct_name);
760
761         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE) {
762                 uint32_t access_desired =
763                         SEC_GENERIC_READ | SEC_GENERIC_WRITE | SEC_GENERIC_EXECUTE |
764                         SEC_STD_WRITE_DAC | SEC_STD_DELETE |
765                         SAMR_USER_ACCESS_SET_PASSWORD |
766                         SAMR_USER_ACCESS_GET_ATTRIBUTES |
767                         SAMR_USER_ACCESS_SET_ATTRIBUTES;
768                 uint32_t access_granted = 0;
769
770                 /* Don't try to set any acct_flags flags other than ACB_WSTRUST */
771
772                 DEBUG(10,("Creating account with desired access mask: %d\n",
773                         access_desired));
774
775                 status = rpccli_samr_CreateUser2(pipe_hnd, mem_ctx,
776                                                  &domain_pol,
777                                                  &lsa_acct_name,
778                                                  ACB_WSTRUST,
779                                                  access_desired,
780                                                  &user_pol,
781                                                  &access_granted,
782                                                  &user_rid);
783                 if (!NT_STATUS_IS_OK(status) &&
784                     !NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
785
786                         DEBUG(10,("Creation of workstation account failed: %s\n",
787                                 nt_errstr(status)));
788
789                         /* If NT_STATUS_ACCESS_DENIED then we have a valid
790                            username/password combo but the user does not have
791                            administrator access. */
792
793                         if (NT_STATUS_EQUAL(status, NT_STATUS_ACCESS_DENIED)) {
794                                 libnet_join_set_error_string(mem_ctx, r,
795                                         "User specified does not have "
796                                         "administrator privileges");
797                         }
798
799                         return status;
800                 }
801
802                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
803                         if (!(r->in.join_flags &
804                               WKSSVC_JOIN_FLAGS_DOMAIN_JOIN_IF_JOINED)) {
805                                 goto done;
806                         }
807                 }
808
809                 /* We *must* do this.... don't ask... */
810
811                 if (NT_STATUS_IS_OK(status)) {
812                         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
813                 }
814         }
815
816         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
817                                          &domain_pol,
818                                          1,
819                                          &lsa_acct_name,
820                                          &user_rids,
821                                          &name_types);
822         if (!NT_STATUS_IS_OK(status)) {
823                 goto done;
824         }
825
826         if (name_types.ids[0] != SID_NAME_USER) {
827                 DEBUG(0,("%s is not a user account (type=%d)\n",
828                         acct_name, name_types.ids[0]));
829                 status = NT_STATUS_INVALID_WORKSTATION;
830                 goto done;
831         }
832
833         user_rid = user_rids.ids[0];
834
835         /* Open handle on user */
836
837         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
838                                       &domain_pol,
839                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
840                                       user_rid,
841                                       &user_pol);
842         if (!NT_STATUS_IS_OK(status)) {
843                 goto done;
844         }
845
846         /* Create a random machine account password and generate the hash */
847
848         E_md4hash(r->in.machine_password, md4_trust_password);
849         encode_pw_buffer(pwbuf, r->in.machine_password, STR_UNICODE);
850
851         generate_random_buffer((uint8_t*)md5buffer, sizeof(md5buffer));
852         digested_session_key = data_blob_talloc(mem_ctx, 0, 16);
853
854         MD5Init(&md5ctx);
855         MD5Update(&md5ctx, md5buffer, sizeof(md5buffer));
856         MD5Update(&md5ctx, cli->user_session_key.data,
857                   cli->user_session_key.length);
858         MD5Final(digested_session_key.data, &md5ctx);
859
860         SamOEMhashBlob(pwbuf, sizeof(pwbuf), &digested_session_key);
861         memcpy(&pwbuf[516], md5buffer, sizeof(md5buffer));
862
863         /* Fill in the additional account flags now */
864
865         acct_flags |= ACB_PWNOEXP;
866         if (r->out.domain_is_ad) {
867 #if !defined(ENCTYPE_ARCFOUR_HMAC)
868                 acct_flags |= ACB_USE_DES_KEY_ONLY;
869 #endif
870                 ;;
871         }
872
873         /* Set password and account flags on machine account */
874
875         ZERO_STRUCT(user_info.info25);
876
877         user_info.info25.info.fields_present = ACCT_NT_PWD_SET |
878                                                ACCT_LM_PWD_SET |
879                                                SAMR_FIELD_ACCT_FLAGS;
880
881         user_info.info25.info.acct_flags = acct_flags;
882         memcpy(&user_info.info25.password.data, pwbuf, sizeof(pwbuf));
883
884         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
885                                          &user_pol,
886                                          25,
887                                          &user_info);
888
889         if (NT_STATUS_EQUAL(status, NT_STATUS(DCERPC_FAULT_INVALID_TAG))) {
890
891                 uchar pwbuf2[516];
892
893                 encode_pw_buffer(pwbuf2, r->in.machine_password, STR_UNICODE);
894
895                 /* retry with level 24 */
896                 init_samr_user_info24(&user_info.info24, pwbuf2, 24);
897
898                 SamOEMhashBlob(user_info.info24.password.data, 516,
899                                &cli->user_session_key);
900
901                 status = rpccli_samr_SetUserInfo2(pipe_hnd, mem_ctx,
902                                                   &user_pol,
903                                                   24,
904                                                   &user_info);
905         }
906
907         if (!NT_STATUS_IS_OK(status)) {
908                 libnet_join_set_error_string(mem_ctx, r,
909                         "Failed to set password for machine account (%s)\n",
910                         nt_errstr(status));
911                 goto done;
912         }
913
914         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
915         cli_rpc_pipe_close(pipe_hnd);
916
917         status = NT_STATUS_OK;
918  done:
919         if (cli) {
920                 cli_shutdown(cli);
921         }
922
923         return status;
924 }
925
926 /****************************************************************
927 ****************************************************************/
928
929 NTSTATUS libnet_join_ok(const char *netbios_domain_name,
930                         const char *machine_name,
931                         const char *dc_name)
932 {
933         uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
934         struct cli_state *cli = NULL;
935         struct rpc_pipe_client *pipe_hnd = NULL;
936         struct rpc_pipe_client *netlogon_pipe = NULL;
937         NTSTATUS status;
938         char *machine_password = NULL;
939         char *machine_account = NULL;
940
941         if (!dc_name) {
942                 return NT_STATUS_INVALID_PARAMETER;
943         }
944
945         if (!secrets_init()) {
946                 return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
947         }
948
949         machine_password = secrets_fetch_machine_password(netbios_domain_name,
950                                                           NULL, NULL);
951         if (!machine_password) {
952                 return NT_STATUS_NO_TRUST_LSA_SECRET;
953         }
954
955         asprintf(&machine_account, "%s$", machine_name);
956         if (!machine_account) {
957                 SAFE_FREE(machine_password);
958                 return NT_STATUS_NO_MEMORY;
959         }
960
961         status = cli_full_connection(&cli, NULL,
962                                      dc_name,
963                                      NULL, 0,
964                                      "IPC$", "IPC",
965                                      machine_account,
966                                      NULL,
967                                      machine_password,
968                                      0,
969                                      Undefined, NULL);
970         free(machine_account);
971         free(machine_password);
972
973         if (!NT_STATUS_IS_OK(status)) {
974                 status = cli_full_connection(&cli, NULL,
975                                              dc_name,
976                                              NULL, 0,
977                                              "IPC$", "IPC",
978                                              "",
979                                              NULL,
980                                              "",
981                                              0,
982                                              Undefined, NULL);
983         }
984
985         if (!NT_STATUS_IS_OK(status)) {
986                 return status;
987         }
988
989         netlogon_pipe = get_schannel_session_key(cli,
990                                                  netbios_domain_name,
991                                                  &neg_flags, &status);
992         if (!netlogon_pipe) {
993                 if (NT_STATUS_EQUAL(status, NT_STATUS_INVALID_NETWORK_RESPONSE)) {
994                         cli_shutdown(cli);
995                         return NT_STATUS_OK;
996                 }
997
998                 DEBUG(0,("libnet_join_ok: failed to get schannel session "
999                         "key from server %s for domain %s. Error was %s\n",
1000                 cli->desthost, netbios_domain_name, nt_errstr(status)));
1001                 cli_shutdown(cli);
1002                 return status;
1003         }
1004
1005         if (!lp_client_schannel()) {
1006                 cli_shutdown(cli);
1007                 return NT_STATUS_OK;
1008         }
1009
1010         pipe_hnd = cli_rpc_pipe_open_schannel_with_key(cli, PI_NETLOGON,
1011                                                        PIPE_AUTH_LEVEL_PRIVACY,
1012                                                        netbios_domain_name,
1013                                                        netlogon_pipe->dc,
1014                                                        &status);
1015
1016         cli_shutdown(cli);
1017
1018         if (!pipe_hnd) {
1019                 DEBUG(0,("libnet_join_ok: failed to open schannel session "
1020                         "on netlogon pipe to server %s for domain %s. "
1021                         "Error was %s\n",
1022                         cli->desthost, netbios_domain_name, nt_errstr(status)));
1023                 return status;
1024         }
1025
1026         return NT_STATUS_OK;
1027 }
1028
1029 /****************************************************************
1030 ****************************************************************/
1031
1032 static WERROR libnet_join_post_verify(TALLOC_CTX *mem_ctx,
1033                                       struct libnet_JoinCtx *r)
1034 {
1035         NTSTATUS status;
1036
1037         status = libnet_join_ok(r->out.netbios_domain_name,
1038                                 r->in.machine_name,
1039                                 r->in.dc_name);
1040         if (!NT_STATUS_IS_OK(status)) {
1041                 libnet_join_set_error_string(mem_ctx, r,
1042                         "failed to verify domain membership after joining: %s",
1043                         get_friendly_nt_error_msg(status));
1044                 return WERR_SETUP_NOT_JOINED;
1045         }
1046
1047         return WERR_OK;
1048 }
1049
1050 /****************************************************************
1051 ****************************************************************/
1052
1053 static bool libnet_join_unjoindomain_remove_secrets(TALLOC_CTX *mem_ctx,
1054                                                     struct libnet_UnjoinCtx *r)
1055 {
1056         if (!secrets_delete_machine_password_ex(lp_workgroup())) {
1057                 return false;
1058         }
1059
1060         if (!secrets_delete_domain_sid(lp_workgroup())) {
1061                 return false;
1062         }
1063
1064         return true;
1065 }
1066
1067 /****************************************************************
1068 ****************************************************************/
1069
1070 static NTSTATUS libnet_join_unjoindomain_rpc(TALLOC_CTX *mem_ctx,
1071                                              struct libnet_UnjoinCtx *r)
1072 {
1073         struct cli_state *cli = NULL;
1074         struct rpc_pipe_client *pipe_hnd = NULL;
1075         POLICY_HND sam_pol, domain_pol, user_pol;
1076         NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
1077         char *acct_name;
1078         uint32_t user_rid;
1079         struct lsa_String lsa_acct_name;
1080         struct samr_Ids user_rids;
1081         struct samr_Ids name_types;
1082         union samr_UserInfo *info = NULL;
1083
1084         status = cli_full_connection(&cli, NULL,
1085                                      r->in.dc_name,
1086                                      NULL, 0,
1087                                      "IPC$", "IPC",
1088                                      r->in.admin_account,
1089                                      NULL,
1090                                      r->in.admin_password,
1091                                      0, Undefined, NULL);
1092
1093         if (!NT_STATUS_IS_OK(status)) {
1094                 goto done;
1095         }
1096
1097         /* Open the domain */
1098
1099         pipe_hnd = cli_rpc_pipe_open_noauth(cli, PI_SAMR, &status);
1100         if (!pipe_hnd) {
1101                 DEBUG(0,("Error connecting to SAM pipe. Error was %s\n",
1102                         nt_errstr(status)));
1103                 goto done;
1104         }
1105
1106         status = rpccli_samr_Connect2(pipe_hnd, mem_ctx,
1107                                       pipe_hnd->cli->desthost,
1108                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
1109                                       &sam_pol);
1110         if (!NT_STATUS_IS_OK(status)) {
1111                 goto done;
1112         }
1113
1114         status = rpccli_samr_OpenDomain(pipe_hnd, mem_ctx,
1115                                         &sam_pol,
1116                                         SEC_RIGHTS_MAXIMUM_ALLOWED,
1117                                         r->in.domain_sid,
1118                                         &domain_pol);
1119         if (!NT_STATUS_IS_OK(status)) {
1120                 goto done;
1121         }
1122
1123         /* Create domain user */
1124
1125         acct_name = talloc_asprintf(mem_ctx, "%s$", r->in.machine_name);
1126         strlower_m(acct_name);
1127
1128         init_lsa_String(&lsa_acct_name, acct_name);
1129
1130         status = rpccli_samr_LookupNames(pipe_hnd, mem_ctx,
1131                                          &domain_pol,
1132                                          1,
1133                                          &lsa_acct_name,
1134                                          &user_rids,
1135                                          &name_types);
1136
1137         if (!NT_STATUS_IS_OK(status)) {
1138                 goto done;
1139         }
1140
1141         if (name_types.ids[0] != SID_NAME_USER) {
1142                 DEBUG(0, ("%s is not a user account (type=%d)\n", acct_name,
1143                         name_types.ids[0]));
1144                 status = NT_STATUS_INVALID_WORKSTATION;
1145                 goto done;
1146         }
1147
1148         user_rid = user_rids.ids[0];
1149
1150         /* Open handle on user */
1151
1152         status = rpccli_samr_OpenUser(pipe_hnd, mem_ctx,
1153                                       &domain_pol,
1154                                       SEC_RIGHTS_MAXIMUM_ALLOWED,
1155                                       user_rid,
1156                                       &user_pol);
1157         if (!NT_STATUS_IS_OK(status)) {
1158                 goto done;
1159         }
1160
1161         /* Get user info */
1162
1163         status = rpccli_samr_QueryUserInfo(pipe_hnd, mem_ctx,
1164                                            &user_pol,
1165                                            16,
1166                                            &info);
1167         if (!NT_STATUS_IS_OK(status)) {
1168                 rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1169                 goto done;
1170         }
1171
1172         /* now disable and setuser info */
1173
1174         info->info16.acct_flags |= ACB_DISABLED;
1175
1176         status = rpccli_samr_SetUserInfo(pipe_hnd, mem_ctx,
1177                                          &user_pol,
1178                                          16,
1179                                          info);
1180
1181         rpccli_samr_Close(pipe_hnd, mem_ctx, &user_pol);
1182
1183 done:
1184         if (pipe_hnd) {
1185                 rpccli_samr_Close(pipe_hnd, mem_ctx, &domain_pol);
1186                 rpccli_samr_Close(pipe_hnd, mem_ctx, &sam_pol);
1187                 cli_rpc_pipe_close(pipe_hnd);
1188         }
1189
1190         if (cli) {
1191                 cli_shutdown(cli);
1192         }
1193
1194         return status;
1195 }
1196
1197 /****************************************************************
1198 ****************************************************************/
1199
1200 static WERROR do_join_modify_vals_config(struct libnet_JoinCtx *r)
1201 {
1202         WERROR werr;
1203         struct smbconf_ctx *ctx;
1204
1205         werr = smbconf_init_reg(r, &ctx, NULL);
1206         if (!W_ERROR_IS_OK(werr)) {
1207                 goto done;
1208         }
1209
1210         if (!(r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE)) {
1211
1212                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1213                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1214
1215                 werr = smbconf_set_global_parameter(ctx, "workgroup",
1216                                                     r->in.domain_name);
1217                 goto done;
1218         }
1219
1220         werr = smbconf_set_global_parameter(ctx, "security", "domain");
1221         W_ERROR_NOT_OK_GOTO_DONE(werr);
1222
1223         werr = smbconf_set_global_parameter(ctx, "workgroup",
1224                                             r->out.netbios_domain_name);
1225         W_ERROR_NOT_OK_GOTO_DONE(werr);
1226
1227         if (r->out.domain_is_ad) {
1228                 werr = smbconf_set_global_parameter(ctx, "security", "ads");
1229                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1230
1231                 werr = smbconf_set_global_parameter(ctx, "realm",
1232                                                     r->out.dns_domain_name);
1233                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1234         }
1235
1236  done:
1237         smbconf_shutdown(ctx);
1238         return werr;
1239 }
1240
1241 /****************************************************************
1242 ****************************************************************/
1243
1244 static WERROR do_unjoin_modify_vals_config(struct libnet_UnjoinCtx *r)
1245 {
1246         WERROR werr = WERR_OK;
1247         struct smbconf_ctx *ctx;
1248
1249         werr = smbconf_init_reg(r, &ctx, NULL);
1250         if (!W_ERROR_IS_OK(werr)) {
1251                 goto done;
1252         }
1253
1254         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1255
1256                 werr = smbconf_set_global_parameter(ctx, "security", "user");
1257                 W_ERROR_NOT_OK_GOTO_DONE(werr);
1258                 smbconf_delete_global_parameter(ctx, "realm");
1259         }
1260
1261  done:
1262         smbconf_shutdown(ctx);
1263         return werr;
1264 }
1265
1266 /****************************************************************
1267 ****************************************************************/
1268
1269 static WERROR do_JoinConfig(struct libnet_JoinCtx *r)
1270 {
1271         WERROR werr;
1272
1273         if (!W_ERROR_IS_OK(r->out.result)) {
1274                 return r->out.result;
1275         }
1276
1277         if (!r->in.modify_config) {
1278                 return WERR_OK;
1279         }
1280
1281         werr = do_join_modify_vals_config(r);
1282         if (!W_ERROR_IS_OK(werr)) {
1283                 return werr;
1284         }
1285
1286         r->out.modified_config = true;
1287         r->out.result = werr;
1288
1289         return werr;
1290 }
1291
1292 /****************************************************************
1293 ****************************************************************/
1294
1295 static WERROR libnet_unjoin_config(struct libnet_UnjoinCtx *r)
1296 {
1297         WERROR werr;
1298
1299         if (!W_ERROR_IS_OK(r->out.result)) {
1300                 return r->out.result;
1301         }
1302
1303         if (!r->in.modify_config) {
1304                 return WERR_OK;
1305         }
1306
1307         werr = do_unjoin_modify_vals_config(r);
1308         if (!W_ERROR_IS_OK(werr)) {
1309                 return werr;
1310         }
1311
1312         r->out.modified_config = true;
1313         r->out.result = werr;
1314
1315         return werr;
1316 }
1317
1318 /****************************************************************
1319 ****************************************************************/
1320
1321 static bool libnet_parse_domain_dc(TALLOC_CTX *mem_ctx,
1322                                    const char *domain_str,
1323                                    const char **domain_p,
1324                                    const char **dc_p)
1325 {
1326         char *domain = NULL;
1327         char *dc = NULL;
1328         const char *p = NULL;
1329
1330         if (!domain_str || !domain_p || !dc_p) {
1331                 return false;
1332         }
1333
1334         p = strchr_m(domain_str, '\\');
1335
1336         if (p != NULL) {
1337                 domain = talloc_strndup(mem_ctx, domain_str,
1338                                          PTR_DIFF(p, domain_str));
1339                 dc = talloc_strdup(mem_ctx, p+1);
1340                 if (!dc) {
1341                         return false;
1342                 }
1343         } else {
1344                 domain = talloc_strdup(mem_ctx, domain_str);
1345                 dc = NULL;
1346         }
1347         if (!domain) {
1348                 return false;
1349         }
1350
1351         *domain_p = domain;
1352
1353         if (!*dc_p && dc) {
1354                 *dc_p = dc;
1355         }
1356
1357         return true;
1358 }
1359
1360 /****************************************************************
1361 ****************************************************************/
1362
1363 static WERROR libnet_join_pre_processing(TALLOC_CTX *mem_ctx,
1364                                          struct libnet_JoinCtx *r)
1365 {
1366         if (!r->in.domain_name) {
1367                 libnet_join_set_error_string(mem_ctx, r,
1368                         "No domain name defined");
1369                 return WERR_INVALID_PARAM;
1370         }
1371
1372         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1373                                     &r->in.domain_name,
1374                                     &r->in.dc_name)) {
1375                 libnet_join_set_error_string(mem_ctx, r,
1376                         "Failed to parse domain name");
1377                 return WERR_INVALID_PARAM;
1378         }
1379
1380         if (r->in.modify_config && !lp_config_backend_is_registry()) {
1381                 libnet_join_set_error_string(mem_ctx, r,
1382                         "Configuration manipulation requested but not "
1383                         "supported by backend");
1384                 return WERR_NOT_SUPPORTED;
1385         }
1386
1387         if (IS_DC) {
1388                 return WERR_SETUP_DOMAIN_CONTROLLER;
1389         }
1390
1391         if (!secrets_init()) {
1392                 libnet_join_set_error_string(mem_ctx, r,
1393                         "Unable to open secrets database");
1394                 return WERR_CAN_NOT_COMPLETE;
1395         }
1396
1397         return WERR_OK;
1398 }
1399
1400 /****************************************************************
1401 ****************************************************************/
1402
1403 static WERROR libnet_join_post_processing(TALLOC_CTX *mem_ctx,
1404                                           struct libnet_JoinCtx *r)
1405 {
1406         WERROR werr;
1407
1408         if (!W_ERROR_IS_OK(r->out.result)) {
1409                 return r->out.result;
1410         }
1411
1412         werr = do_JoinConfig(r);
1413         if (!W_ERROR_IS_OK(werr)) {
1414                 return werr;
1415         }
1416
1417         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1418                 saf_store(r->in.domain_name, r->in.dc_name);
1419         }
1420
1421         return WERR_OK;
1422 }
1423
1424 /****************************************************************
1425 ****************************************************************/
1426
1427 static int libnet_destroy_JoinCtx(struct libnet_JoinCtx *r)
1428 {
1429         if (r->in.ads) {
1430                 ads_destroy(&r->in.ads);
1431         }
1432
1433         return 0;
1434 }
1435
1436 /****************************************************************
1437 ****************************************************************/
1438
1439 static int libnet_destroy_UnjoinCtx(struct libnet_UnjoinCtx *r)
1440 {
1441         if (r->in.ads) {
1442                 ads_destroy(&r->in.ads);
1443         }
1444
1445         return 0;
1446 }
1447
1448 /****************************************************************
1449 ****************************************************************/
1450
1451 WERROR libnet_init_JoinCtx(TALLOC_CTX *mem_ctx,
1452                            struct libnet_JoinCtx **r)
1453 {
1454         struct libnet_JoinCtx *ctx;
1455
1456         ctx = talloc_zero(mem_ctx, struct libnet_JoinCtx);
1457         if (!ctx) {
1458                 return WERR_NOMEM;
1459         }
1460
1461         talloc_set_destructor(ctx, libnet_destroy_JoinCtx);
1462
1463         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1464         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1465
1466         ctx->in.secure_channel_type = SEC_CHAN_WKSTA;
1467
1468         *r = ctx;
1469
1470         return WERR_OK;
1471 }
1472
1473 /****************************************************************
1474 ****************************************************************/
1475
1476 WERROR libnet_init_UnjoinCtx(TALLOC_CTX *mem_ctx,
1477                              struct libnet_UnjoinCtx **r)
1478 {
1479         struct libnet_UnjoinCtx *ctx;
1480
1481         ctx = talloc_zero(mem_ctx, struct libnet_UnjoinCtx);
1482         if (!ctx) {
1483                 return WERR_NOMEM;
1484         }
1485
1486         talloc_set_destructor(ctx, libnet_destroy_UnjoinCtx);
1487
1488         ctx->in.machine_name = talloc_strdup(mem_ctx, global_myname());
1489         W_ERROR_HAVE_NO_MEMORY(ctx->in.machine_name);
1490
1491         *r = ctx;
1492
1493         return WERR_OK;
1494 }
1495
1496 /****************************************************************
1497 ****************************************************************/
1498
1499 static WERROR libnet_DomainJoin(TALLOC_CTX *mem_ctx,
1500                                 struct libnet_JoinCtx *r)
1501 {
1502         NTSTATUS status;
1503 #ifdef WITH_ADS
1504         ADS_STATUS ads_status;
1505 #endif /* WITH_ADS */
1506
1507         if (!r->in.dc_name) {
1508                 struct netr_DsRGetDCNameInfo *info;
1509                 status = dsgetdcname(mem_ctx,
1510                                      r->in.domain_name,
1511                                      NULL,
1512                                      NULL,
1513                                      DS_DIRECTORY_SERVICE_REQUIRED |
1514                                      DS_WRITABLE_REQUIRED |
1515                                      DS_RETURN_DNS_NAME,
1516                                      &info);
1517                 if (!NT_STATUS_IS_OK(status)) {
1518                         libnet_join_set_error_string(mem_ctx, r,
1519                                 "failed to find DC for domain %s",
1520                                 r->in.domain_name,
1521                                 get_friendly_nt_error_msg(status));
1522                         return WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1523                 }
1524
1525                 r->in.dc_name = talloc_strdup(mem_ctx,
1526                                               info->dc_unc);
1527                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
1528         }
1529
1530 #ifdef WITH_ADS
1531         if (r->in.account_ou) {
1532
1533                 ads_status = libnet_join_connect_ads(mem_ctx, r);
1534                 if (!ADS_ERR_OK(ads_status)) {
1535                         return WERR_DEFAULT_JOIN_REQUIRED;
1536                 }
1537
1538                 ads_status = libnet_join_precreate_machine_acct(mem_ctx, r);
1539                 if (!ADS_ERR_OK(ads_status)) {
1540                         libnet_join_set_error_string(mem_ctx, r,
1541                                 "failed to precreate account in ou %s: %s",
1542                                 r->in.account_ou,
1543                                 ads_errstr(ads_status));
1544                         return WERR_DEFAULT_JOIN_REQUIRED;
1545                 }
1546
1547                 r->in.join_flags &= ~WKSSVC_JOIN_FLAGS_ACCOUNT_CREATE;
1548         }
1549 #endif /* WITH_ADS */
1550
1551         status = libnet_join_joindomain_rpc(mem_ctx, r);
1552         if (!NT_STATUS_IS_OK(status)) {
1553                 libnet_join_set_error_string(mem_ctx, r,
1554                         "failed to join domain over rpc: %s",
1555                         get_friendly_nt_error_msg(status));
1556                 if (NT_STATUS_EQUAL(status, NT_STATUS_USER_EXISTS)) {
1557                         return WERR_SETUP_ALREADY_JOINED;
1558                 }
1559                 return ntstatus_to_werror(status);
1560         }
1561
1562         if (!libnet_join_joindomain_store_secrets(mem_ctx, r)) {
1563                 return WERR_SETUP_NOT_JOINED;
1564         }
1565
1566 #ifdef WITH_ADS
1567         if (r->out.domain_is_ad) {
1568                 ads_status  = libnet_join_post_processing_ads(mem_ctx, r);
1569                 if (!ADS_ERR_OK(ads_status)) {
1570                         return WERR_GENERAL_FAILURE;
1571                 }
1572         }
1573 #endif /* WITH_ADS */
1574
1575         return WERR_OK;
1576 }
1577
1578 /****************************************************************
1579 ****************************************************************/
1580
1581 WERROR libnet_Join(TALLOC_CTX *mem_ctx,
1582                    struct libnet_JoinCtx *r)
1583 {
1584         WERROR werr;
1585
1586         if (r->in.debug) {
1587                 LIBNET_JOIN_IN_DUMP_CTX(mem_ctx, r);
1588         }
1589
1590         werr = libnet_join_pre_processing(mem_ctx, r);
1591         if (!W_ERROR_IS_OK(werr)) {
1592                 goto done;
1593         }
1594
1595         if (r->in.join_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1596                 werr = libnet_DomainJoin(mem_ctx, r);
1597                 if (!W_ERROR_IS_OK(werr)) {
1598                         goto done;
1599                 }
1600
1601                 werr = libnet_join_post_verify(mem_ctx, r);
1602                 if (!W_ERROR_IS_OK(werr)) {
1603                         goto done;
1604                 }
1605         }
1606
1607         werr = libnet_join_post_processing(mem_ctx, r);
1608         if (!W_ERROR_IS_OK(werr)) {
1609                 goto done;
1610         }
1611  done:
1612         r->out.result = werr;
1613
1614         if (r->in.debug) {
1615                 LIBNET_JOIN_OUT_DUMP_CTX(mem_ctx, r);
1616         }
1617         return werr;
1618 }
1619
1620 /****************************************************************
1621 ****************************************************************/
1622
1623 static WERROR libnet_DomainUnjoin(TALLOC_CTX *mem_ctx,
1624                                   struct libnet_UnjoinCtx *r)
1625 {
1626         NTSTATUS status;
1627
1628         if (!r->in.domain_sid) {
1629                 struct dom_sid sid;
1630                 if (!secrets_fetch_domain_sid(lp_workgroup(), &sid)) {
1631                         libnet_unjoin_set_error_string(mem_ctx, r,
1632                                 "Unable to fetch domain sid: are we joined?");
1633                         return WERR_SETUP_NOT_JOINED;
1634                 }
1635                 r->in.domain_sid = sid_dup_talloc(mem_ctx, &sid);
1636                 W_ERROR_HAVE_NO_MEMORY(r->in.domain_sid);
1637         }
1638
1639         if (!r->in.dc_name) {
1640                 struct netr_DsRGetDCNameInfo *info;
1641                 status = dsgetdcname(mem_ctx,
1642                                      r->in.domain_name,
1643                                      NULL,
1644                                      NULL,
1645                                      DS_DIRECTORY_SERVICE_REQUIRED |
1646                                      DS_WRITABLE_REQUIRED |
1647                                      DS_RETURN_DNS_NAME,
1648                                      &info);
1649                 if (!NT_STATUS_IS_OK(status)) {
1650                         libnet_unjoin_set_error_string(mem_ctx, r,
1651                                 "failed to find DC for domain %s",
1652                                 r->in.domain_name,
1653                                 get_friendly_nt_error_msg(status));
1654                         return WERR_DOMAIN_CONTROLLER_NOT_FOUND;
1655                 }
1656
1657                 r->in.dc_name = talloc_strdup(mem_ctx,
1658                                               info->dc_unc);
1659                 W_ERROR_HAVE_NO_MEMORY(r->in.dc_name);
1660         }
1661
1662         status = libnet_join_unjoindomain_rpc(mem_ctx, r);
1663         if (!NT_STATUS_IS_OK(status)) {
1664                 libnet_unjoin_set_error_string(mem_ctx, r,
1665                         "failed to disable machine account via rpc: %s",
1666                         get_friendly_nt_error_msg(status));
1667                 if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
1668                         return WERR_SETUP_NOT_JOINED;
1669                 }
1670                 return ntstatus_to_werror(status);
1671         }
1672
1673         r->out.disabled_machine_account = true;
1674
1675 #ifdef WITH_ADS
1676         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_ACCOUNT_DELETE) {
1677                 ADS_STATUS ads_status;
1678                 libnet_unjoin_connect_ads(mem_ctx, r);
1679                 ads_status = libnet_unjoin_remove_machine_acct(mem_ctx, r);
1680                 if (!ADS_ERR_OK(ads_status)) {
1681                         libnet_unjoin_set_error_string(mem_ctx, r,
1682                                 "failed to remove machine account from AD: %s",
1683                                 ads_errstr(ads_status));
1684                 } else {
1685                         r->out.deleted_machine_account = true;
1686                         /* dirty hack */
1687                         r->out.dns_domain_name = talloc_strdup(mem_ctx,
1688                                                                r->in.ads->server.realm);
1689                         W_ERROR_HAVE_NO_MEMORY(r->out.dns_domain_name);
1690                 }
1691         }
1692 #endif /* WITH_ADS */
1693
1694         libnet_join_unjoindomain_remove_secrets(mem_ctx, r);
1695
1696         return WERR_OK;
1697 }
1698
1699 /****************************************************************
1700 ****************************************************************/
1701
1702 static WERROR libnet_unjoin_pre_processing(TALLOC_CTX *mem_ctx,
1703                                            struct libnet_UnjoinCtx *r)
1704 {
1705         if (!r->in.domain_name) {
1706                 libnet_unjoin_set_error_string(mem_ctx, r,
1707                         "No domain name defined");
1708                 return WERR_INVALID_PARAM;
1709         }
1710
1711         if (!libnet_parse_domain_dc(mem_ctx, r->in.domain_name,
1712                                     &r->in.domain_name,
1713                                     &r->in.dc_name)) {
1714                 libnet_unjoin_set_error_string(mem_ctx, r,
1715                         "Failed to parse domain name");
1716                 return WERR_INVALID_PARAM;
1717         }
1718
1719         if (r->in.modify_config && !lp_config_backend_is_registry()) {
1720                 libnet_unjoin_set_error_string(mem_ctx, r,
1721                         "Configuration manipulation requested but not "
1722                         "supported by backend");
1723                 return WERR_NOT_SUPPORTED;
1724         }
1725
1726         if (IS_DC) {
1727                 return WERR_SETUP_DOMAIN_CONTROLLER;
1728         }
1729
1730         if (!secrets_init()) {
1731                 libnet_unjoin_set_error_string(mem_ctx, r,
1732                         "Unable to open secrets database");
1733                 return WERR_CAN_NOT_COMPLETE;
1734         }
1735
1736         return WERR_OK;
1737 }
1738
1739 /****************************************************************
1740 ****************************************************************/
1741
1742 static WERROR libnet_unjoin_post_processing(TALLOC_CTX *mem_ctx,
1743                                             struct libnet_UnjoinCtx *r)
1744 {
1745         saf_delete(r->out.netbios_domain_name);
1746         saf_delete(r->out.dns_domain_name);
1747
1748         return libnet_unjoin_config(r);
1749 }
1750
1751 /****************************************************************
1752 ****************************************************************/
1753
1754 WERROR libnet_Unjoin(TALLOC_CTX *mem_ctx,
1755                      struct libnet_UnjoinCtx *r)
1756 {
1757         WERROR werr;
1758
1759         if (r->in.debug) {
1760                 LIBNET_UNJOIN_IN_DUMP_CTX(mem_ctx, r);
1761         }
1762
1763         werr = libnet_unjoin_pre_processing(mem_ctx, r);
1764         if (!W_ERROR_IS_OK(werr)) {
1765                 goto done;
1766         }
1767
1768         if (r->in.unjoin_flags & WKSSVC_JOIN_FLAGS_JOIN_TYPE) {
1769                 werr = libnet_DomainUnjoin(mem_ctx, r);
1770                 if (!W_ERROR_IS_OK(werr)) {
1771                         libnet_unjoin_config(r);
1772                         goto done;
1773                 }
1774         }
1775
1776         werr = libnet_unjoin_post_processing(mem_ctx, r);
1777         if (!W_ERROR_IS_OK(werr)) {
1778                 goto done;
1779         }
1780
1781  done:
1782         r->out.result = werr;
1783
1784         if (r->in.debug) {
1785                 LIBNET_UNJOIN_OUT_DUMP_CTX(mem_ctx, r);
1786         }
1787
1788         return werr;
1789 }