2 Unix SMB/CIFS implementation.
3 Authentication utility functions
4 Copyright (C) Volker Lendecke 2010
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "../lib/crypto/arcfour.h"
23 #include "../librpc/gen_ndr/netlogon.h"
24 #include "../libcli/security/security.h"
25 #include "rpc_client/util_netlogon.h"
26 #include "nsswitch/libwbclient/wbclient.h"
30 #define DBGC_CLASS DBGC_AUTH
32 /* FIXME: do we really still need this ? */
33 static int server_info_dtor(struct auth_serversupplied_info *server_info)
35 TALLOC_FREE(server_info->info3);
36 ZERO_STRUCTP(server_info);
40 /***************************************************************************
41 Make a server_info struct. Free with TALLOC_FREE().
42 ***************************************************************************/
44 struct auth_serversupplied_info *make_server_info(TALLOC_CTX *mem_ctx)
46 struct auth_serversupplied_info *result;
48 result = talloc_zero(mem_ctx, struct auth_serversupplied_info);
50 DEBUG(0, ("talloc failed\n"));
54 talloc_set_destructor(result, server_info_dtor);
56 /* Initialise the uid and gid values to something non-zero
57 which may save us from giving away root access if there
58 is a bug in allocating these fields. */
60 result->utok.uid = -1;
61 result->utok.gid = -1;
66 /****************************************************************************
67 inits a netr_SamInfo2 structure from an auth_serversupplied_info. sam2 must
68 already be initialized and is used as the talloc parent for its members.
69 *****************************************************************************/
71 NTSTATUS serverinfo_to_SamInfo2(struct auth_serversupplied_info *server_info,
72 uint8_t *pipe_session_key,
73 size_t pipe_session_key_len,
74 struct netr_SamInfo2 *sam2)
76 struct netr_SamInfo3 *info3;
78 info3 = copy_netr_SamInfo3(sam2, server_info->info3);
80 return NT_STATUS_NO_MEMORY;
83 if (server_info->session_key.length) {
84 memcpy(info3->base.key.key,
85 server_info->session_key.data,
86 MIN(sizeof(info3->base.key.key),
87 server_info->session_key.length));
88 if (pipe_session_key) {
89 arcfour_crypt(info3->base.key.key,
90 pipe_session_key, 16);
93 if (server_info->lm_session_key.length) {
94 memcpy(info3->base.LMSessKey.key,
95 server_info->lm_session_key.data,
96 MIN(sizeof(info3->base.LMSessKey.key),
97 server_info->lm_session_key.length));
98 if (pipe_session_key) {
99 arcfour_crypt(info3->base.LMSessKey.key,
100 pipe_session_key, 8);
104 sam2->base = info3->base;
109 /****************************************************************************
110 inits a netr_SamInfo3 structure from an auth_serversupplied_info. sam3 must
111 already be initialized and is used as the talloc parent for its members.
112 *****************************************************************************/
114 NTSTATUS serverinfo_to_SamInfo3(const struct auth_serversupplied_info *server_info,
115 uint8_t *pipe_session_key,
116 size_t pipe_session_key_len,
117 struct netr_SamInfo3 *sam3)
119 struct netr_SamInfo3 *info3;
121 info3 = copy_netr_SamInfo3(sam3, server_info->info3);
123 return NT_STATUS_NO_MEMORY;
126 if (server_info->session_key.length) {
127 memcpy(info3->base.key.key,
128 server_info->session_key.data,
129 MIN(sizeof(info3->base.key.key),
130 server_info->session_key.length));
131 if (pipe_session_key) {
132 arcfour_crypt(info3->base.key.key,
133 pipe_session_key, 16);
136 if (server_info->lm_session_key.length) {
137 memcpy(info3->base.LMSessKey.key,
138 server_info->lm_session_key.data,
139 MIN(sizeof(info3->base.LMSessKey.key),
140 server_info->lm_session_key.length));
141 if (pipe_session_key) {
142 arcfour_crypt(info3->base.LMSessKey.key,
143 pipe_session_key, 8);
147 sam3->base = info3->base;
155 /****************************************************************************
156 inits a netr_SamInfo6 structure from an auth_serversupplied_info. sam6 must
157 already be initialized and is used as the talloc parent for its members.
158 *****************************************************************************/
160 NTSTATUS serverinfo_to_SamInfo6(struct auth_serversupplied_info *server_info,
161 uint8_t *pipe_session_key,
162 size_t pipe_session_key_len,
163 struct netr_SamInfo6 *sam6)
165 struct pdb_domain_info *dominfo;
166 struct netr_SamInfo3 *info3;
168 if ((pdb_capabilities() & PDB_CAP_ADS) == 0) {
169 DEBUG(10,("Not adding validation info level 6 "
170 "without ADS passdb backend\n"));
171 return NT_STATUS_INVALID_INFO_CLASS;
174 dominfo = pdb_get_domain_info(sam6);
175 if (dominfo == NULL) {
176 return NT_STATUS_NO_MEMORY;
179 info3 = copy_netr_SamInfo3(sam6, server_info->info3);
181 return NT_STATUS_NO_MEMORY;
184 if (server_info->session_key.length) {
185 memcpy(info3->base.key.key,
186 server_info->session_key.data,
187 MIN(sizeof(info3->base.key.key),
188 server_info->session_key.length));
189 if (pipe_session_key) {
190 arcfour_crypt(info3->base.key.key,
191 pipe_session_key, 16);
194 if (server_info->lm_session_key.length) {
195 memcpy(info3->base.LMSessKey.key,
196 server_info->lm_session_key.data,
197 MIN(sizeof(info3->base.LMSessKey.key),
198 server_info->lm_session_key.length));
199 if (pipe_session_key) {
200 arcfour_crypt(info3->base.LMSessKey.key,
201 pipe_session_key, 8);
205 sam6->base = info3->base;
210 sam6->dns_domainname.string = talloc_strdup(sam6, dominfo->dns_domain);
211 if (sam6->dns_domainname.string == NULL) {
212 return NT_STATUS_NO_MEMORY;
215 sam6->principle.string = talloc_asprintf(sam6, "%s@%s",
216 sam6->base.account_name.string,
217 sam6->dns_domainname.string);
218 if (sam6->principle.string == NULL) {
219 return NT_STATUS_NO_MEMORY;
225 static NTSTATUS append_netr_SidAttr(TALLOC_CTX *mem_ctx,
226 struct netr_SidAttr **sids,
228 const struct dom_sid2 *asid,
233 *sids = talloc_realloc(mem_ctx, *sids, struct netr_SidAttr, t + 1);
235 return NT_STATUS_NO_MEMORY;
237 (*sids)[t].sid = dom_sid_dup(*sids, asid);
238 if ((*sids)[t].sid == NULL) {
239 return NT_STATUS_NO_MEMORY;
241 (*sids)[t].attributes = attributes;
247 /* Fills the samr_RidWithAttributeArray with the provided sids.
248 * If it happens that we have additional groups that do not belong
249 * to the domain, add their sids as extra sids */
250 static NTSTATUS group_sids_to_info3(struct netr_SamInfo3 *info3,
251 const struct dom_sid *sids,
254 uint32_t attributes = SE_GROUP_MANDATORY |
255 SE_GROUP_ENABLED_BY_DEFAULT |
257 struct samr_RidWithAttributeArray *groups;
258 struct dom_sid *domain_sid;
264 domain_sid = info3->base.domain_sid;
265 groups = &info3->base.groups;
267 groups->rids = talloc_array(info3,
268 struct samr_RidWithAttribute, num_sids);
270 return NT_STATUS_NO_MEMORY;
273 for (i = 0; i < num_sids; i++) {
274 ok = sid_peek_check_rid(domain_sid, &sids[i], &rid);
277 /* if it is the primary gid, skip it, we
278 * obviously already have it */
279 if (info3->base.primary_gid == rid) continue;
281 /* store domain group rid */
282 groups->rids[i].rid = rid;
283 groups->rids[i].attributes = attributes;
288 /* if this wasn't a domain sid, add it as extra sid */
289 status = append_netr_SidAttr(info3, &info3->sids,
291 &sids[i], attributes);
292 if (!NT_STATUS_IS_OK(status)) {
300 #define RET_NOMEM(ptr) do { \
302 TALLOC_FREE(info3); \
303 return NT_STATUS_NO_MEMORY; \
306 NTSTATUS samu_to_SamInfo3(TALLOC_CTX *mem_ctx,
308 const char *login_server,
309 struct netr_SamInfo3 **_info3,
310 struct extra_auth_info *extra)
312 struct netr_SamInfo3 *info3;
313 const struct dom_sid *user_sid;
314 const struct dom_sid *group_sid;
315 struct dom_sid domain_sid;
316 struct dom_sid *group_sids;
317 uint32_t num_group_sids = 0;
323 user_sid = pdb_get_user_sid(samu);
324 group_sid = pdb_get_group_sid(samu);
326 if (!user_sid || !group_sid) {
327 DEBUG(1, ("Sam account is missing sids!\n"));
328 return NT_STATUS_UNSUCCESSFUL;
331 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
333 return NT_STATUS_NO_MEMORY;
336 ZERO_STRUCT(domain_sid);
338 /* check if this is a "Unix Users" domain user,
339 * we need to handle it in a special way if that's the case */
340 if (sid_check_is_in_unix_users(user_sid)) {
341 /* in info3 you can only set rids for the user and the
342 * primary group, and the domain sid must be that of
345 * Store a completely bogus value here.
346 * The real SID is stored in the extra sids.
347 * Other code will know to look there if (-1) is found
349 info3->base.rid = (uint32_t)(-1);
350 sid_copy(&extra->user_sid, user_sid);
352 DEBUG(10, ("Unix User found in struct samu. Rid marked as "
353 "special and sid (%s) saved as extra sid\n",
354 sid_string_dbg(user_sid)));
356 sid_copy(&domain_sid, user_sid);
357 sid_split_rid(&domain_sid, &info3->base.rid);
360 if (is_null_sid(&domain_sid)) {
361 sid_copy(&domain_sid, get_global_sam_sid());
364 /* check if this is a "Unix Groups" domain group,
365 * if so we need special handling */
366 if (sid_check_is_in_unix_groups(group_sid)) {
367 /* in info3 you can only set rids for the user and the
368 * primary group, and the domain sid must be that of
371 * Store a completely bogus value here.
372 * The real SID is stored in the extra sids.
373 * Other code will know to look there if (-1) is found
375 info3->base.primary_gid = (uint32_t)(-1);
376 sid_copy(&extra->pgid_sid, group_sid);
378 DEBUG(10, ("Unix Group found in struct samu. Rid marked as "
379 "special and sid (%s) saved as extra sid\n",
380 sid_string_dbg(group_sid)));
383 ok = sid_peek_check_rid(&domain_sid, group_sid,
384 &info3->base.primary_gid);
386 DEBUG(1, ("The primary group domain sid(%s) does not "
387 "match the domain sid(%s) for %s(%s)\n",
388 sid_string_dbg(group_sid),
389 sid_string_dbg(&domain_sid),
390 pdb_get_username(samu),
391 sid_string_dbg(user_sid)));
393 return NT_STATUS_UNSUCCESSFUL;
397 unix_to_nt_time(&info3->base.last_logon, pdb_get_logon_time(samu));
398 unix_to_nt_time(&info3->base.last_logoff, get_time_t_max());
399 unix_to_nt_time(&info3->base.acct_expiry, get_time_t_max());
400 unix_to_nt_time(&info3->base.last_password_change,
401 pdb_get_pass_last_set_time(samu));
402 unix_to_nt_time(&info3->base.allow_password_change,
403 pdb_get_pass_can_change_time(samu));
404 unix_to_nt_time(&info3->base.force_password_change,
405 pdb_get_pass_must_change_time(samu));
407 tmp = pdb_get_username(samu);
409 info3->base.account_name.string = talloc_strdup(info3, tmp);
410 RET_NOMEM(info3->base.account_name.string);
412 tmp = pdb_get_fullname(samu);
414 info3->base.full_name.string = talloc_strdup(info3, tmp);
415 RET_NOMEM(info3->base.full_name.string);
417 tmp = pdb_get_logon_script(samu);
419 info3->base.logon_script.string = talloc_strdup(info3, tmp);
420 RET_NOMEM(info3->base.logon_script.string);
422 tmp = pdb_get_profile_path(samu);
424 info3->base.profile_path.string = talloc_strdup(info3, tmp);
425 RET_NOMEM(info3->base.profile_path.string);
427 tmp = pdb_get_homedir(samu);
429 info3->base.home_directory.string = talloc_strdup(info3, tmp);
430 RET_NOMEM(info3->base.home_directory.string);
432 tmp = pdb_get_dir_drive(samu);
434 info3->base.home_drive.string = talloc_strdup(info3, tmp);
435 RET_NOMEM(info3->base.home_drive.string);
438 info3->base.logon_count = pdb_get_logon_count(samu);
439 info3->base.bad_password_count = pdb_get_bad_password_count(samu);
441 status = pdb_enum_group_memberships(mem_ctx, samu,
444 if (!NT_STATUS_IS_OK(status)) {
445 DEBUG(1, ("Failed to get groups from sam account.\n"));
450 if (num_group_sids) {
451 status = group_sids_to_info3(info3, group_sids, num_group_sids);
452 if (!NT_STATUS_IS_OK(status)) {
458 /* We don't need sids and gids after the conversion */
459 TALLOC_FREE(group_sids);
463 /* FIXME: should we add other flags ? */
464 info3->base.user_flags = NETLOGON_EXTRA_SIDS;
467 info3->base.logon_server.string = talloc_strdup(info3, login_server);
468 RET_NOMEM(info3->base.logon_server.string);
471 info3->base.domain.string = talloc_strdup(info3,
472 pdb_get_domain(samu));
473 RET_NOMEM(info3->base.domain.string);
475 info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
476 RET_NOMEM(info3->base.domain_sid);
478 info3->base.acct_flags = pdb_get_acct_ctrl(samu);
486 #define RET_NOMEM(ptr) do { \
488 TALLOC_FREE(info3); \
492 struct netr_SamInfo3 *copy_netr_SamInfo3(TALLOC_CTX *mem_ctx,
493 struct netr_SamInfo3 *orig)
495 struct netr_SamInfo3 *info3;
499 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
500 if (!info3) return NULL;
502 status = copy_netr_SamBaseInfo(info3, &orig->base, &info3->base);
503 if (!NT_STATUS_IS_OK(status)) {
508 if (orig->sidcount) {
509 info3->sidcount = orig->sidcount;
510 info3->sids = talloc_array(info3, struct netr_SidAttr,
512 RET_NOMEM(info3->sids);
513 for (i = 0; i < orig->sidcount; i++) {
514 info3->sids[i].sid = dom_sid_dup(info3->sids,
516 RET_NOMEM(info3->sids[i].sid);
517 info3->sids[i].attributes =
518 orig->sids[i].attributes;
525 static NTSTATUS wbcsids_to_samr_RidWithAttributeArray(
527 struct samr_RidWithAttributeArray *groups,
528 const struct dom_sid *domain_sid,
529 const struct wbcSidWithAttr *sids,
535 groups->rids = talloc_array(mem_ctx,
536 struct samr_RidWithAttribute, num_sids);
538 return NT_STATUS_NO_MEMORY;
541 /* a wbcDomainSid is the same as a dom_sid */
542 for (i = 0; i < num_sids; i++) {
543 ok = sid_peek_check_rid(domain_sid,
544 (const struct dom_sid *)&sids[i].sid,
545 &groups->rids[i].rid);
548 groups->rids[i].attributes = SE_GROUP_MANDATORY |
549 SE_GROUP_ENABLED_BY_DEFAULT |
557 struct netr_SamInfo3 *wbcAuthUserInfo_to_netr_SamInfo3(TALLOC_CTX *mem_ctx,
558 const struct wbcAuthUserInfo *info)
560 struct netr_SamInfo3 *info3;
561 struct dom_sid user_sid;
562 struct dom_sid group_sid;
563 struct dom_sid domain_sid;
567 memcpy(&user_sid, &info->sids[0].sid, sizeof(user_sid));
568 memcpy(&group_sid, &info->sids[1].sid, sizeof(group_sid));
570 info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
571 if (!info3) return NULL;
573 info3->base.last_logon = info->logon_time;
574 info3->base.last_logoff = info->logoff_time;
575 info3->base.acct_expiry = info->kickoff_time;
576 unix_to_nt_time(&info3->base.last_password_change, info->pass_last_set_time);
577 unix_to_nt_time(&info3->base.allow_password_change,
578 info->pass_can_change_time);
579 unix_to_nt_time(&info3->base.force_password_change,
580 info->pass_must_change_time);
582 if (info->account_name) {
583 info3->base.account_name.string =
584 talloc_strdup(info3, info->account_name);
585 RET_NOMEM(info3->base.account_name.string);
587 if (info->full_name) {
588 info3->base.full_name.string =
589 talloc_strdup(info3, info->full_name);
590 RET_NOMEM(info3->base.full_name.string);
592 if (info->logon_script) {
593 info3->base.logon_script.string =
594 talloc_strdup(info3, info->logon_script);
595 RET_NOMEM(info3->base.logon_script.string);
597 if (info->profile_path) {
598 info3->base.profile_path.string =
599 talloc_strdup(info3, info->profile_path);
600 RET_NOMEM(info3->base.profile_path.string);
602 if (info->home_directory) {
603 info3->base.home_directory.string =
604 talloc_strdup(info3, info->home_directory);
605 RET_NOMEM(info3->base.home_directory.string);
607 if (info->home_drive) {
608 info3->base.home_drive.string =
609 talloc_strdup(info3, info->home_drive);
610 RET_NOMEM(info3->base.home_drive.string);
613 info3->base.logon_count = info->logon_count;
614 info3->base.bad_password_count = info->bad_password_count;
616 sid_copy(&domain_sid, &user_sid);
617 sid_split_rid(&domain_sid, &info3->base.rid);
619 ok = sid_peek_check_rid(&domain_sid, &group_sid,
620 &info3->base.primary_gid);
622 DEBUG(1, ("The primary group sid domain does not"
623 "match user sid domain for user: %s\n",
624 info->account_name));
629 status = wbcsids_to_samr_RidWithAttributeArray(info3,
634 if (!NT_STATUS_IS_OK(status)) {
639 info3->base.user_flags = info->user_flags;
640 memcpy(info3->base.key.key, info->user_session_key, 16);
642 if (info->logon_server) {
643 info3->base.logon_server.string =
644 talloc_strdup(info3, info->logon_server);
645 RET_NOMEM(info3->base.logon_server.string);
647 if (info->domain_name) {
648 info3->base.domain.string =
649 talloc_strdup(info3, info->domain_name);
650 RET_NOMEM(info3->base.domain.string);
653 info3->base.domain_sid = dom_sid_dup(info3, &domain_sid);
654 RET_NOMEM(info3->base.domain_sid);
656 memcpy(info3->base.LMSessKey.key, info->lm_session_key, 8);
657 info3->base.acct_flags = info->acct_flags;