2 Unix SMB/CIFS implementation.
4 Winbind daemon - pam auth funcions
6 Copyright (C) Andrew Tridgell 2000
7 Copyright (C) Tim Potter 2001
8 Copyright (C) Andrew Bartlett 2001-2002
9 Copyright (C) Guenther Deschner 2005
11 This program is free software; you can redistribute it and/or modify
12 it under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 3 of the License, or
14 (at your option) any later version.
16 This program is distributed in the hope that it will be useful,
17 but WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 GNU General Public License for more details.
21 You should have received a copy of the GNU General Public License
22 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "../libcli/auth/libcli_auth.h"
28 #include "../librpc/gen_ndr/cli_samr.h"
29 #include "rpc_client/cli_samr.h"
30 #include "../librpc/gen_ndr/ndr_netlogon.h"
31 #include "rpc_client/cli_netlogon.h"
33 #include "../lib/crypto/arcfour.h"
34 #include "../libcli/security/security.h"
36 #include "../librpc/gen_ndr/krb5pac.h"
39 #define DBGC_CLASS DBGC_WINBIND
41 #define LOGON_KRB5_FAIL_CLOCK_SKEW 0x02000000
43 static NTSTATUS append_info3_as_txt(TALLOC_CTX *mem_ctx,
44 struct winbindd_response *resp,
45 struct netr_SamInfo3 *info3)
50 resp->data.auth.info3.logon_time =
51 nt_time_to_unix(info3->base.last_logon);
52 resp->data.auth.info3.logoff_time =
53 nt_time_to_unix(info3->base.last_logoff);
54 resp->data.auth.info3.kickoff_time =
55 nt_time_to_unix(info3->base.acct_expiry);
56 resp->data.auth.info3.pass_last_set_time =
57 nt_time_to_unix(info3->base.last_password_change);
58 resp->data.auth.info3.pass_can_change_time =
59 nt_time_to_unix(info3->base.allow_password_change);
60 resp->data.auth.info3.pass_must_change_time =
61 nt_time_to_unix(info3->base.force_password_change);
63 resp->data.auth.info3.logon_count = info3->base.logon_count;
64 resp->data.auth.info3.bad_pw_count = info3->base.bad_password_count;
66 resp->data.auth.info3.user_rid = info3->base.rid;
67 resp->data.auth.info3.group_rid = info3->base.primary_gid;
68 sid_to_fstring(resp->data.auth.info3.dom_sid, info3->base.domain_sid);
70 resp->data.auth.info3.num_groups = info3->base.groups.count;
71 resp->data.auth.info3.user_flgs = info3->base.user_flags;
73 resp->data.auth.info3.acct_flags = info3->base.acct_flags;
74 resp->data.auth.info3.num_other_sids = info3->sidcount;
76 fstrcpy(resp->data.auth.info3.user_name,
77 info3->base.account_name.string);
78 fstrcpy(resp->data.auth.info3.full_name,
79 info3->base.full_name.string);
80 fstrcpy(resp->data.auth.info3.logon_script,
81 info3->base.logon_script.string);
82 fstrcpy(resp->data.auth.info3.profile_path,
83 info3->base.profile_path.string);
84 fstrcpy(resp->data.auth.info3.home_dir,
85 info3->base.home_directory.string);
86 fstrcpy(resp->data.auth.info3.dir_drive,
87 info3->base.home_drive.string);
89 fstrcpy(resp->data.auth.info3.logon_srv,
90 info3->base.logon_server.string);
91 fstrcpy(resp->data.auth.info3.logon_dom,
92 info3->base.domain.string);
94 ex = talloc_strdup(mem_ctx, "");
95 NT_STATUS_HAVE_NO_MEMORY(ex);
97 for (i=0; i < info3->base.groups.count; i++) {
98 ex = talloc_asprintf_append_buffer(ex, "0x%08X:0x%08X\n",
99 info3->base.groups.rids[i].rid,
100 info3->base.groups.rids[i].attributes);
101 NT_STATUS_HAVE_NO_MEMORY(ex);
104 for (i=0; i < info3->sidcount; i++) {
107 sid = dom_sid_string(mem_ctx, info3->sids[i].sid);
108 NT_STATUS_HAVE_NO_MEMORY(sid);
110 ex = talloc_asprintf_append_buffer(ex, "%s:0x%08X\n",
112 info3->sids[i].attributes);
113 NT_STATUS_HAVE_NO_MEMORY(ex);
118 resp->extra_data.data = ex;
119 resp->length += talloc_get_size(ex);
124 static NTSTATUS append_info3_as_ndr(TALLOC_CTX *mem_ctx,
125 struct winbindd_response *resp,
126 struct netr_SamInfo3 *info3)
129 enum ndr_err_code ndr_err;
131 ndr_err = ndr_push_struct_blob(&blob, mem_ctx, info3,
132 (ndr_push_flags_fn_t)ndr_push_netr_SamInfo3);
133 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
134 DEBUG(0,("append_info3_as_ndr: failed to append\n"));
135 return ndr_map_error2ntstatus(ndr_err);
138 resp->extra_data.data = blob.data;
139 resp->length += blob.length;
144 static NTSTATUS append_unix_username(TALLOC_CTX *mem_ctx,
145 struct winbindd_response *resp,
146 const struct netr_SamInfo3 *info3,
147 const char *name_domain,
148 const char *name_user)
150 /* We've been asked to return the unix username, per
151 'winbind use default domain' settings and the like */
153 const char *nt_username, *nt_domain;
155 nt_domain = talloc_strdup(mem_ctx, info3->base.domain.string);
157 /* If the server didn't give us one, just use the one
159 nt_domain = name_domain;
162 nt_username = talloc_strdup(mem_ctx, info3->base.account_name.string);
164 /* If the server didn't give us one, just use the one
166 nt_username = name_user;
169 fill_domain_username(resp->data.auth.unix_username,
170 nt_domain, nt_username, true);
172 DEBUG(5, ("Setting unix username to [%s]\n",
173 resp->data.auth.unix_username));
178 static NTSTATUS append_afs_token(TALLOC_CTX *mem_ctx,
179 struct winbindd_response *resp,
180 const struct netr_SamInfo3 *info3,
181 const char *name_domain,
182 const char *name_user)
184 char *afsname = NULL;
188 afsname = talloc_strdup(mem_ctx, lp_afs_username_map());
189 if (afsname == NULL) {
190 return NT_STATUS_NO_MEMORY;
193 afsname = talloc_string_sub(mem_ctx,
194 lp_afs_username_map(),
196 afsname = talloc_string_sub(mem_ctx, afsname,
198 afsname = talloc_string_sub(mem_ctx, afsname,
202 struct dom_sid user_sid;
205 sid_compose(&user_sid, info3->base.domain_sid,
207 sid_to_fstring(sidstr, &user_sid);
208 afsname = talloc_string_sub(mem_ctx, afsname,
212 if (afsname == NULL) {
213 return NT_STATUS_NO_MEMORY;
218 DEBUG(10, ("Generating token for user %s\n", afsname));
220 cell = strchr(afsname, '@');
223 return NT_STATUS_NO_MEMORY;
229 token = afs_createtoken_str(afsname, cell);
233 resp->extra_data.data = talloc_strdup(mem_ctx, token);
234 if (resp->extra_data.data == NULL) {
235 return NT_STATUS_NO_MEMORY;
237 resp->length += strlen((const char *)resp->extra_data.data)+1;
242 static NTSTATUS check_info3_in_group(struct netr_SamInfo3 *info3,
243 const char *group_sid)
245 * Check whether a user belongs to a group or list of groups.
247 * @param mem_ctx talloc memory context.
248 * @param info3 user information, including group membership info.
249 * @param group_sid One or more groups , separated by commas.
251 * @return NT_STATUS_OK on success,
252 * NT_STATUS_LOGON_FAILURE if the user does not belong,
253 * or other NT_STATUS_IS_ERR(status) for other kinds of failure.
256 struct dom_sid *require_membership_of_sid;
257 uint32_t num_require_membership_of_sid;
262 struct security_token *token;
263 TALLOC_CTX *frame = talloc_stackframe();
266 /* Parse the 'required group' SID */
268 if (!group_sid || !group_sid[0]) {
269 /* NO sid supplied, all users may access */
273 token = talloc_zero(talloc_tos(), struct security_token);
275 DEBUG(0, ("talloc failed\n"));
277 return NT_STATUS_NO_MEMORY;
280 num_require_membership_of_sid = 0;
281 require_membership_of_sid = NULL;
285 while (next_token_talloc(talloc_tos(), &p, &req_sid, ",")) {
286 if (!string_to_sid(&sid, req_sid)) {
287 DEBUG(0, ("check_info3_in_group: could not parse %s "
288 "as a SID!", req_sid));
290 return NT_STATUS_INVALID_PARAMETER;
293 status = add_sid_to_array(talloc_tos(), &sid,
294 &require_membership_of_sid,
295 &num_require_membership_of_sid);
296 if (!NT_STATUS_IS_OK(status)) {
297 DEBUG(0, ("add_sid_to_array failed\n"));
303 status = sid_array_from_info3(talloc_tos(), info3,
307 if (!NT_STATUS_IS_OK(status)) {
312 if (!NT_STATUS_IS_OK(status = add_aliases(get_global_sam_sid(),
314 || !NT_STATUS_IS_OK(status = add_aliases(&global_sid_Builtin,
316 DEBUG(3, ("could not add aliases: %s\n",
322 security_token_debug(DBGC_CLASS, 10, token);
324 for (i=0; i<num_require_membership_of_sid; i++) {
325 DEBUG(10, ("Checking SID %s\n", sid_string_dbg(
326 &require_membership_of_sid[i])));
327 if (nt_token_check_sid(&require_membership_of_sid[i],
329 DEBUG(10, ("Access ok\n"));
335 /* Do not distinguish this error from a wrong username/pw */
338 return NT_STATUS_LOGON_FAILURE;
341 struct winbindd_domain *find_auth_domain(uint8_t flags,
342 const char *domain_name)
344 struct winbindd_domain *domain;
347 domain = find_domain_from_name_noinit(domain_name);
348 if (domain == NULL) {
349 DEBUG(3, ("Authentication for domain [%s] refused "
350 "as it is not a trusted domain\n",
356 if (strequal(domain_name, get_global_sam_name())) {
357 return find_domain_from_name_noinit(domain_name);
360 /* we can auth against trusted domains */
361 if (flags & WBFLAG_PAM_CONTACT_TRUSTDOM) {
362 domain = find_domain_from_name_noinit(domain_name);
363 if (domain == NULL) {
364 DEBUG(3, ("Authentication for domain [%s] skipped "
365 "as it is not a trusted domain\n",
372 return find_our_domain();
375 static void fill_in_password_policy(struct winbindd_response *r,
376 const struct samr_DomInfo1 *p)
378 r->data.auth.policy.min_length_password =
379 p->min_password_length;
380 r->data.auth.policy.password_history =
381 p->password_history_length;
382 r->data.auth.policy.password_properties =
383 p->password_properties;
384 r->data.auth.policy.expire =
385 nt_time_to_unix_abs((NTTIME *)&(p->max_password_age));
386 r->data.auth.policy.min_passwordage =
387 nt_time_to_unix_abs((NTTIME *)&(p->min_password_age));
390 static NTSTATUS fillup_password_policy(struct winbindd_domain *domain,
391 struct winbindd_cli_state *state)
393 struct winbindd_methods *methods;
394 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
395 struct samr_DomInfo1 password_policy;
397 if ( !winbindd_can_contact_domain( domain ) ) {
398 DEBUG(5,("fillup_password_policy: No inbound trust to "
399 "contact domain %s\n", domain->name));
400 return NT_STATUS_NOT_SUPPORTED;
403 methods = domain->methods;
405 status = methods->password_policy(domain, state->mem_ctx, &password_policy);
406 if (NT_STATUS_IS_ERR(status)) {
410 fill_in_password_policy(state->response, &password_policy);
415 static NTSTATUS get_max_bad_attempts_from_lockout_policy(struct winbindd_domain *domain,
417 uint16 *lockout_threshold)
419 struct winbindd_methods *methods;
420 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
421 struct samr_DomInfo12 lockout_policy;
423 *lockout_threshold = 0;
425 methods = domain->methods;
427 status = methods->lockout_policy(domain, mem_ctx, &lockout_policy);
428 if (NT_STATUS_IS_ERR(status)) {
432 *lockout_threshold = lockout_policy.lockout_threshold;
437 static NTSTATUS get_pwd_properties(struct winbindd_domain *domain,
439 uint32 *password_properties)
441 struct winbindd_methods *methods;
442 NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
443 struct samr_DomInfo1 password_policy;
445 *password_properties = 0;
447 methods = domain->methods;
449 status = methods->password_policy(domain, mem_ctx, &password_policy);
450 if (NT_STATUS_IS_ERR(status)) {
454 *password_properties = password_policy.password_properties;
461 static const char *generate_krb5_ccache(TALLOC_CTX *mem_ctx,
464 const char **user_ccache_file)
466 /* accept FILE and WRFILE as krb5_cc_type from the client and then
467 * build the full ccname string based on the user's uid here -
470 const char *gen_cc = NULL;
473 if (strequal(type, "FILE")) {
474 gen_cc = talloc_asprintf(
475 mem_ctx, "FILE:/tmp/krb5cc_%d", uid);
477 if (strequal(type, "WRFILE")) {
478 gen_cc = talloc_asprintf(
479 mem_ctx, "WRFILE:/tmp/krb5cc_%d", uid);
483 *user_ccache_file = gen_cc;
485 if (gen_cc == NULL) {
486 gen_cc = talloc_strdup(mem_ctx, "MEMORY:winbindd_pam_ccache");
488 if (gen_cc == NULL) {
489 DEBUG(0,("out of memory\n"));
493 DEBUG(10, ("using ccache: %s%s\n", gen_cc,
494 (*user_ccache_file == NULL) ? " (internal)":""));
501 uid_t get_uid_from_request(struct winbindd_request *request)
505 uid = request->data.auth.uid;
508 DEBUG(1,("invalid uid: '%u'\n", (unsigned int)uid));
514 static uid_t get_uid_from_state(struct winbindd_cli_state *state)
516 return get_uid_from_request(state->request);
519 /**********************************************************************
520 Authenticate a user with a clear text password using Kerberos and fill up
522 **********************************************************************/
524 static NTSTATUS winbindd_raw_kerberos_login(struct winbindd_domain *domain,
525 struct winbindd_cli_state *state,
526 struct netr_SamInfo3 **info3)
529 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
530 krb5_error_code krb5_ret;
531 const char *cc = NULL;
532 const char *principal_s = NULL;
533 const char *service = NULL;
535 fstring name_domain, name_user;
536 time_t ticket_lifetime = 0;
537 time_t renewal_until = 0;
540 time_t time_offset = 0;
541 const char *user_ccache_file;
542 struct PAC_LOGON_INFO *logon_info = NULL;
547 * prepare a krb5_cc_cache string for the user */
549 uid = get_uid_from_state(state);
551 DEBUG(0,("no valid uid\n"));
554 cc = generate_krb5_ccache(state->mem_ctx,
555 state->request->data.auth.krb5_cc_type,
559 return NT_STATUS_NO_MEMORY;
564 * get kerberos properties */
566 if (domain->private_data) {
567 ads = (ADS_STRUCT *)domain->private_data;
568 time_offset = ads->auth.time_offset;
573 * do kerberos auth and setup ccache as the user */
575 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
577 realm = domain->alt_name;
580 principal_s = talloc_asprintf(state->mem_ctx, "%s@%s", name_user, realm);
581 if (principal_s == NULL) {
582 return NT_STATUS_NO_MEMORY;
585 service = talloc_asprintf(state->mem_ctx, "%s/%s@%s", KRB5_TGS_NAME, realm, realm);
586 if (service == NULL) {
587 return NT_STATUS_NO_MEMORY;
590 /* if this is a user ccache, we need to act as the user to let the krb5
591 * library handle the chown, etc. */
593 /************************ ENTERING NON-ROOT **********************/
595 if (user_ccache_file != NULL) {
596 set_effective_uid(uid);
597 DEBUG(10,("winbindd_raw_kerberos_login: uid is %d\n", uid));
600 result = kerberos_return_pac(state->mem_ctx,
602 state->request->data.auth.pass,
609 WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
612 if (user_ccache_file != NULL) {
613 gain_root_privilege();
616 /************************ RETURNED TO ROOT **********************/
618 if (!NT_STATUS_IS_OK(result)) {
622 *info3 = &logon_info->info3;
624 DEBUG(10,("winbindd_raw_kerberos_login: winbindd validated ticket of %s\n",
627 /* if we had a user's ccache then return that string for the pam
630 if (user_ccache_file != NULL) {
632 fstrcpy(state->response->data.auth.krb5ccname,
635 result = add_ccache_to_list(principal_s,
638 state->request->data.auth.user,
646 if (!NT_STATUS_IS_OK(result)) {
647 DEBUG(10,("winbindd_raw_kerberos_login: failed to add ccache to list: %s\n",
652 /* need to delete the memory cred cache, it is not used anymore */
654 krb5_ret = ads_kdestroy(cc);
656 DEBUG(3,("winbindd_raw_kerberos_login: "
657 "could not destroy krb5 credential cache: "
658 "%s\n", error_message(krb5_ret)));
667 /* we could have created a new credential cache with a valid tgt in it
668 * but we werent able to get or verify the service ticket for this
669 * local host and therefor didn't get the PAC, we need to remove that
670 * cache entirely now */
672 krb5_ret = ads_kdestroy(cc);
674 DEBUG(3,("winbindd_raw_kerberos_login: "
675 "could not destroy krb5 credential cache: "
676 "%s\n", error_message(krb5_ret)));
679 if (!NT_STATUS_IS_OK(remove_ccache(state->request->data.auth.user))) {
680 DEBUG(3,("winbindd_raw_kerberos_login: "
681 "could not remove ccache for user %s\n",
682 state->request->data.auth.user));
687 return NT_STATUS_NOT_SUPPORTED;
688 #endif /* HAVE_KRB5 */
691 /****************************************************************
692 ****************************************************************/
694 bool check_request_flags(uint32_t flags)
696 uint32_t flags_edata = WBFLAG_PAM_AFS_TOKEN |
697 WBFLAG_PAM_INFO3_TEXT |
698 WBFLAG_PAM_INFO3_NDR;
700 if ( ( (flags & flags_edata) == WBFLAG_PAM_AFS_TOKEN) ||
701 ( (flags & flags_edata) == WBFLAG_PAM_INFO3_NDR) ||
702 ( (flags & flags_edata) == WBFLAG_PAM_INFO3_TEXT)||
703 !(flags & flags_edata) ) {
707 DEBUG(1, ("check_request_flags: invalid request flags[0x%08X]\n",
713 /****************************************************************
714 ****************************************************************/
716 static NTSTATUS append_auth_data(TALLOC_CTX *mem_ctx,
717 struct winbindd_response *resp,
718 uint32_t request_flags,
719 struct netr_SamInfo3 *info3,
720 const char *name_domain,
721 const char *name_user)
725 if (request_flags & WBFLAG_PAM_USER_SESSION_KEY) {
726 memcpy(resp->data.auth.user_session_key,
728 sizeof(resp->data.auth.user_session_key)
732 if (request_flags & WBFLAG_PAM_LMKEY) {
733 memcpy(resp->data.auth.first_8_lm_hash,
734 info3->base.LMSessKey.key,
735 sizeof(resp->data.auth.first_8_lm_hash)
739 if (request_flags & WBFLAG_PAM_UNIX_NAME) {
740 result = append_unix_username(mem_ctx, resp,
741 info3, name_domain, name_user);
742 if (!NT_STATUS_IS_OK(result)) {
743 DEBUG(10,("Failed to append Unix Username: %s\n",
749 /* currently, anything from here on potentially overwrites extra_data. */
751 if (request_flags & WBFLAG_PAM_INFO3_NDR) {
752 result = append_info3_as_ndr(mem_ctx, resp, info3);
753 if (!NT_STATUS_IS_OK(result)) {
754 DEBUG(10,("Failed to append INFO3 (NDR): %s\n",
760 if (request_flags & WBFLAG_PAM_INFO3_TEXT) {
761 result = append_info3_as_txt(mem_ctx, resp, info3);
762 if (!NT_STATUS_IS_OK(result)) {
763 DEBUG(10,("Failed to append INFO3 (TXT): %s\n",
769 if (request_flags & WBFLAG_PAM_AFS_TOKEN) {
770 result = append_afs_token(mem_ctx, resp,
771 info3, name_domain, name_user);
772 if (!NT_STATUS_IS_OK(result)) {
773 DEBUG(10,("Failed to append AFS token: %s\n",
782 static NTSTATUS winbindd_dual_pam_auth_cached(struct winbindd_domain *domain,
783 struct winbindd_cli_state *state,
784 struct netr_SamInfo3 **info3)
786 NTSTATUS result = NT_STATUS_LOGON_FAILURE;
787 uint16 max_allowed_bad_attempts;
788 fstring name_domain, name_user;
790 enum lsa_SidType type;
791 uchar new_nt_pass[NT_HASH_LEN];
792 const uint8 *cached_nt_pass;
793 const uint8 *cached_salt;
794 struct netr_SamInfo3 *my_info3;
795 time_t kickoff_time, must_change_time;
796 bool password_good = false;
798 struct winbindd_tdc_domain *tdc_domain = NULL;
805 DEBUG(10,("winbindd_dual_pam_auth_cached\n"));
807 /* Parse domain and username */
809 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
812 if (!lookup_cached_name(name_domain,
816 DEBUG(10,("winbindd_dual_pam_auth_cached: no such user in the cache\n"));
817 return NT_STATUS_NO_SUCH_USER;
820 if (type != SID_NAME_USER) {
821 DEBUG(10,("winbindd_dual_pam_auth_cached: not a user (%s)\n", sid_type_lookup(type)));
822 return NT_STATUS_LOGON_FAILURE;
825 result = winbindd_get_creds(domain,
831 if (!NT_STATUS_IS_OK(result)) {
832 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get creds: %s\n", nt_errstr(result)));
838 E_md4hash(state->request->data.auth.pass, new_nt_pass);
840 dump_data_pw("new_nt_pass", new_nt_pass, NT_HASH_LEN);
841 dump_data_pw("cached_nt_pass", cached_nt_pass, NT_HASH_LEN);
843 dump_data_pw("cached_salt", cached_salt, NT_HASH_LEN);
847 /* In this case we didn't store the nt_hash itself,
848 but the MD5 combination of salt + nt_hash. */
849 uchar salted_hash[NT_HASH_LEN];
850 E_md5hash(cached_salt, new_nt_pass, salted_hash);
852 password_good = (memcmp(cached_nt_pass, salted_hash,
855 /* Old cached cred - direct store of nt_hash (bad bad bad !). */
856 password_good = (memcmp(cached_nt_pass, new_nt_pass,
862 /* User *DOES* know the password, update logon_time and reset
865 my_info3->base.user_flags |= NETLOGON_CACHED_ACCOUNT;
867 if (my_info3->base.acct_flags & ACB_AUTOLOCK) {
868 return NT_STATUS_ACCOUNT_LOCKED_OUT;
871 if (my_info3->base.acct_flags & ACB_DISABLED) {
872 return NT_STATUS_ACCOUNT_DISABLED;
875 if (my_info3->base.acct_flags & ACB_WSTRUST) {
876 return NT_STATUS_NOLOGON_WORKSTATION_TRUST_ACCOUNT;
879 if (my_info3->base.acct_flags & ACB_SVRTRUST) {
880 return NT_STATUS_NOLOGON_SERVER_TRUST_ACCOUNT;
883 if (my_info3->base.acct_flags & ACB_DOMTRUST) {
884 return NT_STATUS_NOLOGON_INTERDOMAIN_TRUST_ACCOUNT;
887 if (!(my_info3->base.acct_flags & ACB_NORMAL)) {
888 DEBUG(0,("winbindd_dual_pam_auth_cached: whats wrong with that one?: 0x%08x\n",
889 my_info3->base.acct_flags));
890 return NT_STATUS_LOGON_FAILURE;
893 kickoff_time = nt_time_to_unix(my_info3->base.acct_expiry);
894 if (kickoff_time != 0 && time(NULL) > kickoff_time) {
895 return NT_STATUS_ACCOUNT_EXPIRED;
898 must_change_time = nt_time_to_unix(my_info3->base.force_password_change);
899 if (must_change_time != 0 && must_change_time < time(NULL)) {
900 /* we allow grace logons when the password has expired */
901 my_info3->base.user_flags |= NETLOGON_GRACE_LOGON;
902 /* return NT_STATUS_PASSWORD_EXPIRED; */
907 if ((state->request->flags & WBFLAG_PAM_KRB5) &&
908 ((tdc_domain = wcache_tdc_fetch_domain(state->mem_ctx, name_domain)) != NULL) &&
909 ((tdc_domain->trust_type & NETR_TRUST_TYPE_UPLEVEL) ||
910 /* used to cope with the case winbindd starting without network. */
911 !strequal(tdc_domain->domain_name, tdc_domain->dns_name))) {
914 const char *cc = NULL;
916 const char *principal_s = NULL;
917 const char *service = NULL;
918 const char *user_ccache_file;
920 uid = get_uid_from_state(state);
922 DEBUG(0,("winbindd_dual_pam_auth_cached: invalid uid\n"));
923 return NT_STATUS_INVALID_PARAMETER;
926 cc = generate_krb5_ccache(state->mem_ctx,
927 state->request->data.auth.krb5_cc_type,
928 state->request->data.auth.uid,
931 return NT_STATUS_NO_MEMORY;
934 realm = domain->alt_name;
937 principal_s = talloc_asprintf(state->mem_ctx, "%s@%s", name_user, realm);
938 if (principal_s == NULL) {
939 return NT_STATUS_NO_MEMORY;
942 service = talloc_asprintf(state->mem_ctx, "%s/%s@%s", KRB5_TGS_NAME, realm, realm);
943 if (service == NULL) {
944 return NT_STATUS_NO_MEMORY;
947 if (user_ccache_file != NULL) {
949 fstrcpy(state->response->data.auth.krb5ccname,
952 result = add_ccache_to_list(principal_s,
955 state->request->data.auth.user,
959 time(NULL) + lp_winbind_cache_time(),
960 time(NULL) + WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
963 if (!NT_STATUS_IS_OK(result)) {
964 DEBUG(10,("winbindd_dual_pam_auth_cached: failed "
965 "to add ccache to list: %s\n",
970 #endif /* HAVE_KRB5 */
972 /* FIXME: we possibly should handle logon hours as well (does xp when
973 * offline?) see auth/auth_sam.c:sam_account_ok for details */
975 unix_to_nt_time(&my_info3->base.last_logon, time(NULL));
976 my_info3->base.bad_password_count = 0;
978 result = winbindd_update_creds_by_info3(domain,
979 state->request->data.auth.user,
980 state->request->data.auth.pass,
982 if (!NT_STATUS_IS_OK(result)) {
983 DEBUG(1,("winbindd_dual_pam_auth_cached: failed to update creds: %s\n",
992 /* User does *NOT* know the correct password, modify info3 accordingly */
994 /* failure of this is not critical */
995 result = get_max_bad_attempts_from_lockout_policy(domain, state->mem_ctx, &max_allowed_bad_attempts);
996 if (!NT_STATUS_IS_OK(result)) {
997 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get max_allowed_bad_attempts. "
998 "Won't be able to honour account lockout policies\n"));
1001 /* increase counter */
1002 my_info3->base.bad_password_count++;
1004 if (max_allowed_bad_attempts == 0) {
1009 if (my_info3->base.bad_password_count >= max_allowed_bad_attempts) {
1011 uint32 password_properties;
1013 result = get_pwd_properties(domain, state->mem_ctx, &password_properties);
1014 if (!NT_STATUS_IS_OK(result)) {
1015 DEBUG(10,("winbindd_dual_pam_auth_cached: failed to get password properties.\n"));
1018 if ((my_info3->base.rid != DOMAIN_RID_ADMINISTRATOR) ||
1019 (password_properties & DOMAIN_PASSWORD_LOCKOUT_ADMINS)) {
1020 my_info3->base.acct_flags |= ACB_AUTOLOCK;
1025 result = winbindd_update_creds_by_info3(domain,
1026 state->request->data.auth.user,
1030 if (!NT_STATUS_IS_OK(result)) {
1031 DEBUG(0,("winbindd_dual_pam_auth_cached: failed to update creds %s\n",
1032 nt_errstr(result)));
1035 return NT_STATUS_LOGON_FAILURE;
1038 static NTSTATUS winbindd_dual_pam_auth_kerberos(struct winbindd_domain *domain,
1039 struct winbindd_cli_state *state,
1040 struct netr_SamInfo3 **info3)
1042 struct winbindd_domain *contact_domain;
1043 fstring name_domain, name_user;
1046 DEBUG(10,("winbindd_dual_pam_auth_kerberos\n"));
1048 /* Parse domain and username */
1050 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
1052 /* what domain should we contact? */
1055 if (!(contact_domain = find_domain_from_name(name_domain))) {
1056 DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
1057 state->request->data.auth.user, name_domain, name_user, name_domain));
1058 result = NT_STATUS_NO_SUCH_USER;
1063 if (is_myname(name_domain)) {
1064 DEBUG(3, ("Authentication for domain %s (local domain to this server) not supported at this stage\n", name_domain));
1065 result = NT_STATUS_NO_SUCH_USER;
1069 contact_domain = find_domain_from_name(name_domain);
1070 if (contact_domain == NULL) {
1071 DEBUG(3, ("Authentication for domain for [%s] -> [%s]\\[%s] failed as %s is not a trusted domain\n",
1072 state->request->data.auth.user, name_domain, name_user, name_domain));
1074 contact_domain = find_our_domain();
1078 if (contact_domain->initialized &&
1079 contact_domain->active_directory) {
1083 if (!contact_domain->initialized) {
1084 init_dc_connection(contact_domain);
1087 if (!contact_domain->active_directory) {
1088 DEBUG(3,("krb5 auth requested but domain is not Active Directory\n"));
1089 return NT_STATUS_INVALID_LOGON_TYPE;
1092 result = winbindd_raw_kerberos_login(contact_domain, state, info3);
1097 static NTSTATUS winbindd_dual_auth_passdb(TALLOC_CTX *mem_ctx,
1098 const char *domain, const char *user,
1099 const DATA_BLOB *challenge,
1100 const DATA_BLOB *lm_resp,
1101 const DATA_BLOB *nt_resp,
1102 struct netr_SamInfo3 **pinfo3)
1104 struct auth_usersupplied_info *user_info = NULL;
1107 status = make_user_info(&user_info, user, user, domain, domain,
1108 global_myname(), lm_resp, nt_resp, NULL, NULL,
1109 NULL, AUTH_PASSWORD_RESPONSE);
1110 if (!NT_STATUS_IS_OK(status)) {
1111 DEBUG(10, ("make_user_info failed: %s\n", nt_errstr(status)));
1115 /* We don't want any more mapping of the username */
1116 user_info->mapped_state = True;
1118 status = check_sam_security_info3(challenge, talloc_tos(), user_info,
1120 free_user_info(&user_info);
1121 DEBUG(10, ("Authenticaticating user %s\\%s returned %s\n", domain,
1122 user, nt_errstr(status)));
1126 typedef NTSTATUS (*netlogon_fn_t)(struct rpc_pipe_client *cli,
1127 TALLOC_CTX *mem_ctx,
1128 uint32 logon_parameters,
1130 const char *username,
1132 const char *workstation,
1133 const uint8 chal[8],
1134 DATA_BLOB lm_response,
1135 DATA_BLOB nt_response,
1136 struct netr_SamInfo3 **info3);
1138 static NTSTATUS winbindd_dual_pam_auth_samlogon(struct winbindd_domain *domain,
1139 struct winbindd_cli_state *state,
1140 struct netr_SamInfo3 **info3)
1143 struct rpc_pipe_client *netlogon_pipe;
1148 unsigned char local_nt_response[24];
1149 fstring name_domain, name_user;
1152 struct netr_SamInfo3 *my_info3 = NULL;
1156 DEBUG(10,("winbindd_dual_pam_auth_samlogon\n"));
1158 /* Parse domain and username */
1160 parse_domain_user(state->request->data.auth.user, name_domain, name_user);
1162 /* do password magic */
1164 generate_random_buffer(chal, sizeof(chal));
1166 if (lp_client_ntlmv2_auth()) {
1167 DATA_BLOB server_chal;
1168 DATA_BLOB names_blob;
1169 server_chal = data_blob_const(chal, 8);
1171 /* note that the 'workgroup' here is for the local
1172 machine. The 'server name' must match the
1173 'workstation' passed to the actual SamLogon call.
1175 names_blob = NTLMv2_generate_names_blob(state->mem_ctx, global_myname(), lp_workgroup());
1177 if (!SMBNTLMv2encrypt(state->mem_ctx, name_user, name_domain,
1178 state->request->data.auth.pass,
1181 &lm_resp, &nt_resp, NULL, NULL)) {
1182 data_blob_free(&names_blob);
1183 DEBUG(0, ("winbindd_pam_auth: SMBNTLMv2encrypt() failed!\n"));
1184 result = NT_STATUS_NO_MEMORY;
1187 data_blob_free(&names_blob);
1189 lm_resp = data_blob_null;
1190 SMBNTencrypt(state->request->data.auth.pass,
1194 nt_resp = data_blob_talloc(state->mem_ctx,
1196 sizeof(local_nt_response));
1199 if (strequal(name_domain, get_global_sam_name())) {
1200 DATA_BLOB chal_blob = data_blob_const(chal, sizeof(chal));
1202 result = winbindd_dual_auth_passdb(
1203 state->mem_ctx, name_domain, name_user,
1204 &chal_blob, &lm_resp, &nt_resp, info3);
1208 /* check authentication loop */
1211 netlogon_fn_t logon_fn;
1213 ZERO_STRUCTP(my_info3);
1216 result = cm_connect_netlogon(domain, &netlogon_pipe);
1218 if (!NT_STATUS_IS_OK(result)) {
1219 DEBUG(3, ("could not open handle to NETLOGON pipe\n"));
1223 /* It is really important to try SamLogonEx here,
1224 * because in a clustered environment, we want to use
1225 * one machine account from multiple physical
1228 * With a normal SamLogon call, we must keep the
1229 * credentials chain updated and intact between all
1230 * users of the machine account (which would imply
1231 * cross-node communication for every NTLM logon).
1233 * (The credentials chain is not per NETLOGON pipe
1234 * connection, but globally on the server/client pair
1237 * When using SamLogonEx, the credentials are not
1238 * supplied, but the session key is implied by the
1239 * wrapping SamLogon context.
1241 * -- abartlet 21 April 2008
1244 logon_fn = domain->can_do_samlogon_ex
1245 ? rpccli_netlogon_sam_network_logon_ex
1246 : rpccli_netlogon_sam_network_logon;
1248 result = logon_fn(netlogon_pipe,
1251 domain->dcname, /* server name */
1252 name_user, /* user name */
1253 name_domain, /* target domain */
1254 global_myname(), /* workstation */
1261 if ((NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR)
1262 && domain->can_do_samlogon_ex) {
1263 DEBUG(3, ("Got a DC that can not do NetSamLogonEx, "
1264 "retrying with NetSamLogon\n"));
1265 domain->can_do_samlogon_ex = false;
1270 /* We have to try a second time as cm_connect_netlogon
1271 might not yet have noticed that the DC has killed
1274 if (!rpccli_is_connected(netlogon_pipe)) {
1279 /* if we get access denied, a possible cause was that we had
1280 and open connection to the DC, but someone changed our
1281 machine account password out from underneath us using 'net
1282 rpc changetrustpw' */
1284 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) ) {
1285 DEBUG(3,("winbindd_pam_auth: sam_logon returned "
1286 "ACCESS_DENIED. Maybe the trust account "
1287 "password was changed and we didn't know it. "
1288 "Killing connections to domain %s\n",
1290 invalidate_cm_connection(&domain->conn);
1294 } while ( (attempts < 2) && retry );
1296 /* handle the case where a NT4 DC does not fill in the acct_flags in
1297 * the samlogon reply info3. When accurate info3 is required by the
1298 * caller, we look up the account flags ourselve - gd */
1300 if ((state->request->flags & WBFLAG_PAM_INFO3_TEXT) &&
1301 NT_STATUS_IS_OK(result) && (my_info3->base.acct_flags == 0)) {
1303 struct rpc_pipe_client *samr_pipe;
1304 struct policy_handle samr_domain_handle, user_pol;
1305 union samr_UserInfo *info = NULL;
1306 NTSTATUS status_tmp;
1309 status_tmp = cm_connect_sam(domain, state->mem_ctx,
1310 &samr_pipe, &samr_domain_handle);
1312 if (!NT_STATUS_IS_OK(status_tmp)) {
1313 DEBUG(3, ("could not open handle to SAMR pipe: %s\n",
1314 nt_errstr(status_tmp)));
1318 status_tmp = rpccli_samr_OpenUser(samr_pipe, state->mem_ctx,
1319 &samr_domain_handle,
1320 MAXIMUM_ALLOWED_ACCESS,
1324 if (!NT_STATUS_IS_OK(status_tmp)) {
1325 DEBUG(3, ("could not open user handle on SAMR pipe: %s\n",
1326 nt_errstr(status_tmp)));
1330 status_tmp = rpccli_samr_QueryUserInfo(samr_pipe, state->mem_ctx,
1335 if (!NT_STATUS_IS_OK(status_tmp)) {
1336 DEBUG(3, ("could not query user info on SAMR pipe: %s\n",
1337 nt_errstr(status_tmp)));
1338 rpccli_samr_Close(samr_pipe, state->mem_ctx, &user_pol);
1342 acct_flags = info->info16.acct_flags;
1344 if (acct_flags == 0) {
1345 rpccli_samr_Close(samr_pipe, state->mem_ctx, &user_pol);
1349 my_info3->base.acct_flags = acct_flags;
1351 DEBUG(10,("successfully retrieved acct_flags 0x%x\n", acct_flags));
1353 rpccli_samr_Close(samr_pipe, state->mem_ctx, &user_pol);
1361 enum winbindd_result winbindd_dual_pam_auth(struct winbindd_domain *domain,
1362 struct winbindd_cli_state *state)
1364 NTSTATUS result = NT_STATUS_LOGON_FAILURE;
1365 NTSTATUS krb5_result = NT_STATUS_OK;
1366 fstring name_domain, name_user;
1368 fstring domain_user;
1369 struct netr_SamInfo3 *info3 = NULL;
1370 NTSTATUS name_map_status = NT_STATUS_UNSUCCESSFUL;
1372 /* Ensure null termination */
1373 state->request->data.auth.user[sizeof(state->request->data.auth.user)-1]='\0';
1375 /* Ensure null termination */
1376 state->request->data.auth.pass[sizeof(state->request->data.auth.pass)-1]='\0';
1378 DEBUG(3, ("[%5lu]: dual pam auth %s\n", (unsigned long)state->pid,
1379 state->request->data.auth.user));
1381 /* Parse domain and username */
1383 name_map_status = normalize_name_unmap(state->mem_ctx,
1384 state->request->data.auth.user,
1387 /* If the name normalization didnt' actually do anything,
1388 just use the original name */
1390 if (!NT_STATUS_IS_OK(name_map_status) &&
1391 !NT_STATUS_EQUAL(name_map_status, NT_STATUS_FILE_RENAMED))
1393 mapped_user = state->request->data.auth.user;
1396 parse_domain_user(mapped_user, name_domain, name_user);
1398 if ( mapped_user != state->request->data.auth.user ) {
1399 fstr_sprintf( domain_user, "%s%c%s", name_domain,
1400 *lp_winbind_separator(),
1402 safe_strcpy( state->request->data.auth.user, domain_user,
1403 sizeof(state->request->data.auth.user)-1 );
1406 if (!domain->online) {
1407 result = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
1408 if (domain->startup) {
1409 /* Logons are very important to users. If we're offline and
1410 we get a request within the first 30 seconds of startup,
1411 try very hard to find a DC and go online. */
1413 DEBUG(10,("winbindd_dual_pam_auth: domain: %s offline and auth "
1414 "request in startup mode.\n", domain->name ));
1416 winbindd_flush_negative_conn_cache(domain);
1417 result = init_dc_connection(domain);
1421 DEBUG(10,("winbindd_dual_pam_auth: domain: %s last was %s\n", domain->name, domain->online ? "online":"offline"));
1423 /* Check for Kerberos authentication */
1424 if (domain->online && (state->request->flags & WBFLAG_PAM_KRB5)) {
1426 result = winbindd_dual_pam_auth_kerberos(domain, state, &info3);
1427 /* save for later */
1428 krb5_result = result;
1431 if (NT_STATUS_IS_OK(result)) {
1432 DEBUG(10,("winbindd_dual_pam_auth_kerberos succeeded\n"));
1433 goto process_result;
1435 DEBUG(10,("winbindd_dual_pam_auth_kerberos failed: %s\n", nt_errstr(result)));
1438 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
1439 NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
1440 NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND)) {
1441 DEBUG(10,("winbindd_dual_pam_auth_kerberos setting domain to offline\n"));
1442 set_domain_offline( domain );
1446 /* there are quite some NT_STATUS errors where there is no
1447 * point in retrying with a samlogon, we explictly have to take
1448 * care not to increase the bad logon counter on the DC */
1450 if (NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_DISABLED) ||
1451 NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_EXPIRED) ||
1452 NT_STATUS_EQUAL(result, NT_STATUS_ACCOUNT_LOCKED_OUT) ||
1453 NT_STATUS_EQUAL(result, NT_STATUS_INVALID_LOGON_HOURS) ||
1454 NT_STATUS_EQUAL(result, NT_STATUS_INVALID_WORKSTATION) ||
1455 NT_STATUS_EQUAL(result, NT_STATUS_LOGON_FAILURE) ||
1456 NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER) ||
1457 NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_EXPIRED) ||
1458 NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_MUST_CHANGE) ||
1459 NT_STATUS_EQUAL(result, NT_STATUS_WRONG_PASSWORD)) {
1463 if (state->request->flags & WBFLAG_PAM_FALLBACK_AFTER_KRB5) {
1464 DEBUG(3,("falling back to samlogon\n"));
1472 /* Check for Samlogon authentication */
1473 if (domain->online) {
1474 result = winbindd_dual_pam_auth_samlogon(domain, state, &info3);
1476 if (NT_STATUS_IS_OK(result)) {
1477 DEBUG(10,("winbindd_dual_pam_auth_samlogon succeeded\n"));
1478 /* add the Krb5 err if we have one */
1479 if ( NT_STATUS_EQUAL(krb5_result, NT_STATUS_TIME_DIFFERENCE_AT_DC ) ) {
1480 info3->base.user_flags |= LOGON_KRB5_FAIL_CLOCK_SKEW;
1482 goto process_result;
1485 DEBUG(10,("winbindd_dual_pam_auth_samlogon failed: %s\n",
1486 nt_errstr(result)));
1488 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_LOGON_SERVERS) ||
1489 NT_STATUS_EQUAL(result, NT_STATUS_IO_TIMEOUT) ||
1490 NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND))
1492 DEBUG(10,("winbindd_dual_pam_auth_samlogon setting domain to offline\n"));
1493 set_domain_offline( domain );
1497 if (domain->online) {
1498 /* We're still online - fail. */
1504 /* Check for Cached logons */
1505 if (!domain->online && (state->request->flags & WBFLAG_PAM_CACHED_LOGIN) &&
1506 lp_winbind_offline_logon()) {
1508 result = winbindd_dual_pam_auth_cached(domain, state, &info3);
1510 if (NT_STATUS_IS_OK(result)) {
1511 DEBUG(10,("winbindd_dual_pam_auth_cached succeeded\n"));
1512 goto process_result;
1514 DEBUG(10,("winbindd_dual_pam_auth_cached failed: %s\n", nt_errstr(result)));
1521 if (NT_STATUS_IS_OK(result)) {
1523 struct dom_sid user_sid;
1525 /* In all codepaths where result == NT_STATUS_OK info3 must have
1526 been initialized. */
1528 result = NT_STATUS_INTERNAL_ERROR;
1532 sid_compose(&user_sid, info3->base.domain_sid,
1535 wcache_invalidate_samlogon(find_domain_from_name(name_domain),
1537 netsamlogon_cache_store(name_user, info3);
1539 /* save name_to_sid info as early as possible (only if
1540 this is our primary domain so we don't invalidate
1541 the cache entry by storing the seq_num for the wrong
1543 if ( domain->primary ) {
1544 cache_name2sid(domain, name_domain, name_user,
1545 SID_NAME_USER, &user_sid);
1548 /* Check if the user is in the right group */
1550 result = check_info3_in_group(
1552 state->request->data.auth.require_membership_of_sid);
1553 if (!NT_STATUS_IS_OK(result)) {
1554 DEBUG(3, ("User %s is not in the required group (%s), so plaintext authentication is rejected\n",
1555 state->request->data.auth.user,
1556 state->request->data.auth.require_membership_of_sid));
1560 result = append_auth_data(state->mem_ctx, state->response,
1561 state->request->flags, info3,
1562 name_domain, name_user);
1563 if (!NT_STATUS_IS_OK(result)) {
1567 if ((state->request->flags & WBFLAG_PAM_CACHED_LOGIN)
1568 && lp_winbind_offline_logon()) {
1570 result = winbindd_store_creds(domain,
1571 state->request->data.auth.user,
1572 state->request->data.auth.pass,
1576 if (state->request->flags & WBFLAG_PAM_GET_PWD_POLICY) {
1577 struct winbindd_domain *our_domain = find_our_domain();
1579 /* This is not entirely correct I believe, but it is
1580 consistent. Only apply the password policy settings
1581 too warn users for our own domain. Cannot obtain these
1582 from trusted DCs all the time so don't do it at all.
1585 result = NT_STATUS_NOT_SUPPORTED;
1586 if (our_domain == domain ) {
1587 result = fillup_password_policy(our_domain, state);
1590 if (!NT_STATUS_IS_OK(result)
1591 && !NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED) )
1593 DEBUG(10,("Failed to get password policies for domain %s: %s\n",
1594 domain->name, nt_errstr(result)));
1599 result = NT_STATUS_OK;
1603 /* give us a more useful (more correct?) error code */
1604 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
1605 (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
1606 result = NT_STATUS_NO_LOGON_SERVERS;
1609 set_auth_errors(state->response, result);
1611 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2, ("Plain-text authentication for user %s returned %s (PAM: %d)\n",
1612 state->request->data.auth.user,
1613 state->response->data.auth.nt_status_string,
1614 state->response->data.auth.pam_error));
1616 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
1619 enum winbindd_result winbindd_dual_pam_auth_crap(struct winbindd_domain *domain,
1620 struct winbindd_cli_state *state)
1623 struct netr_SamInfo3 *info3 = NULL;
1624 struct rpc_pipe_client *netlogon_pipe;
1625 const char *name_user = NULL;
1626 const char *name_domain = NULL;
1627 const char *workstation;
1631 DATA_BLOB lm_resp, nt_resp;
1633 /* This is child-only, so no check for privileged access is needed
1636 /* Ensure null termination */
1637 state->request->data.auth_crap.user[sizeof(state->request->data.auth_crap.user)-1]=0;
1638 state->request->data.auth_crap.domain[sizeof(state->request->data.auth_crap.domain)-1]=0;
1640 name_user = state->request->data.auth_crap.user;
1641 name_domain = state->request->data.auth_crap.domain;
1642 workstation = state->request->data.auth_crap.workstation;
1644 DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n", (unsigned long)state->pid,
1645 name_domain, name_user));
1647 if (state->request->data.auth_crap.lm_resp_len > sizeof(state->request->data.auth_crap.lm_resp)
1648 || state->request->data.auth_crap.nt_resp_len > sizeof(state->request->data.auth_crap.nt_resp)) {
1649 if (!(state->request->flags & WBFLAG_BIG_NTLMV2_BLOB) ||
1650 state->request->extra_len != state->request->data.auth_crap.nt_resp_len) {
1651 DEBUG(0, ("winbindd_pam_auth_crap: invalid password length %u/%u\n",
1652 state->request->data.auth_crap.lm_resp_len,
1653 state->request->data.auth_crap.nt_resp_len));
1654 result = NT_STATUS_INVALID_PARAMETER;
1659 lm_resp = data_blob_talloc(state->mem_ctx, state->request->data.auth_crap.lm_resp,
1660 state->request->data.auth_crap.lm_resp_len);
1662 if (state->request->flags & WBFLAG_BIG_NTLMV2_BLOB) {
1663 nt_resp = data_blob_talloc(state->mem_ctx,
1664 state->request->extra_data.data,
1665 state->request->data.auth_crap.nt_resp_len);
1667 nt_resp = data_blob_talloc(state->mem_ctx,
1668 state->request->data.auth_crap.nt_resp,
1669 state->request->data.auth_crap.nt_resp_len);
1672 if (strequal(name_domain, get_global_sam_name())) {
1673 DATA_BLOB chal_blob = data_blob_const(
1674 state->request->data.auth_crap.chal,
1675 sizeof(state->request->data.auth_crap.chal));
1677 result = winbindd_dual_auth_passdb(
1678 state->mem_ctx, name_domain, name_user,
1679 &chal_blob, &lm_resp, &nt_resp, &info3);
1680 goto process_result;
1684 netlogon_fn_t logon_fn;
1688 netlogon_pipe = NULL;
1689 result = cm_connect_netlogon(domain, &netlogon_pipe);
1691 if (!NT_STATUS_IS_OK(result)) {
1692 DEBUG(3, ("could not open handle to NETLOGON pipe (error: %s)\n",
1693 nt_errstr(result)));
1697 logon_fn = domain->can_do_samlogon_ex
1698 ? rpccli_netlogon_sam_network_logon_ex
1699 : rpccli_netlogon_sam_network_logon;
1701 result = logon_fn(netlogon_pipe,
1703 state->request->data.auth_crap.logon_parameters,
1707 /* Bug #3248 - found by Stefan Burkei. */
1708 workstation, /* We carefully set this above so use it... */
1709 state->request->data.auth_crap.chal,
1714 if ((NT_STATUS_V(result) == DCERPC_FAULT_OP_RNG_ERROR)
1715 && domain->can_do_samlogon_ex) {
1716 DEBUG(3, ("Got a DC that can not do NetSamLogonEx, "
1717 "retrying with NetSamLogon\n"));
1718 domain->can_do_samlogon_ex = false;
1725 /* We have to try a second time as cm_connect_netlogon
1726 might not yet have noticed that the DC has killed
1729 if (!rpccli_is_connected(netlogon_pipe)) {
1734 /* if we get access denied, a possible cause was that we had and open
1735 connection to the DC, but someone changed our machine account password
1736 out from underneath us using 'net rpc changetrustpw' */
1738 if ( NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) ) {
1739 DEBUG(3,("winbindd_pam_auth: sam_logon returned "
1740 "ACCESS_DENIED. Maybe the trust account "
1741 "password was changed and we didn't know it. "
1742 "Killing connections to domain %s\n",
1744 invalidate_cm_connection(&domain->conn);
1748 } while ( (attempts < 2) && retry );
1752 if (NT_STATUS_IS_OK(result)) {
1753 struct dom_sid user_sid;
1755 sid_compose(&user_sid, info3->base.domain_sid,
1757 wcache_invalidate_samlogon(find_domain_from_name(name_domain),
1759 netsamlogon_cache_store(name_user, info3);
1761 /* Check if the user is in the right group */
1763 result = check_info3_in_group(
1765 state->request->data.auth_crap.require_membership_of_sid);
1766 if (!NT_STATUS_IS_OK(result)) {
1767 DEBUG(3, ("User %s is not in the required group (%s), so "
1768 "crap authentication is rejected\n",
1769 state->request->data.auth_crap.user,
1770 state->request->data.auth_crap.require_membership_of_sid));
1774 result = append_auth_data(state->mem_ctx, state->response,
1775 state->request->flags, info3,
1776 name_domain, name_user);
1777 if (!NT_STATUS_IS_OK(result)) {
1784 /* give us a more useful (more correct?) error code */
1785 if ((NT_STATUS_EQUAL(result, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND) ||
1786 (NT_STATUS_EQUAL(result, NT_STATUS_UNSUCCESSFUL)))) {
1787 result = NT_STATUS_NO_LOGON_SERVERS;
1790 if (state->request->flags & WBFLAG_PAM_NT_STATUS_SQUASH) {
1791 result = nt_status_squash(result);
1794 set_auth_errors(state->response, result);
1796 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
1797 ("NTLM CRAP authentication for user [%s]\\[%s] returned %s (PAM: %d)\n",
1800 state->response->data.auth.nt_status_string,
1801 state->response->data.auth.pam_error));
1803 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
1806 enum winbindd_result winbindd_dual_pam_chauthtok(struct winbindd_domain *contact_domain,
1807 struct winbindd_cli_state *state)
1810 char *newpass = NULL;
1811 struct policy_handle dom_pol;
1812 struct rpc_pipe_client *cli = NULL;
1813 bool got_info = false;
1814 struct samr_DomInfo1 *info = NULL;
1815 struct userPwdChangeFailureInformation *reject = NULL;
1816 NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
1817 fstring domain, user;
1819 ZERO_STRUCT(dom_pol);
1821 DEBUG(3, ("[%5lu]: dual pam chauthtok %s\n", (unsigned long)state->pid,
1822 state->request->data.auth.user));
1824 if (!parse_domain_user(state->request->data.chauthtok.user, domain, user)) {
1828 /* Change password */
1830 oldpass = state->request->data.chauthtok.oldpass;
1831 newpass = state->request->data.chauthtok.newpass;
1833 /* Initialize reject reason */
1834 state->response->data.auth.reject_reason = Undefined;
1836 /* Get sam handle */
1838 result = cm_connect_sam(contact_domain, state->mem_ctx, &cli,
1840 if (!NT_STATUS_IS_OK(result)) {
1841 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
1845 result = rpccli_samr_chgpasswd_user3(cli, state->mem_ctx,
1852 /* Windows 2003 returns NT_STATUS_PASSWORD_RESTRICTION */
1854 if (NT_STATUS_EQUAL(result, NT_STATUS_PASSWORD_RESTRICTION) ) {
1856 fill_in_password_policy(state->response, info);
1858 state->response->data.auth.reject_reason =
1859 reject->extendedFailureReason;
1864 /* atm the pidl generated rpccli_samr_ChangePasswordUser3 function will
1865 * return with NT_STATUS_BUFFER_TOO_SMALL for w2k dcs as w2k just
1866 * returns with 4byte error code (NT_STATUS_NOT_SUPPORTED) which is too
1867 * short to comply with the samr_ChangePasswordUser3 idl - gd */
1869 /* only fallback when the chgpasswd_user3 call is not supported */
1870 if ((NT_STATUS_EQUAL(result, NT_STATUS(DCERPC_FAULT_OP_RNG_ERROR))) ||
1871 (NT_STATUS_EQUAL(result, NT_STATUS_NOT_SUPPORTED)) ||
1872 (NT_STATUS_EQUAL(result, NT_STATUS_BUFFER_TOO_SMALL)) ||
1873 (NT_STATUS_EQUAL(result, NT_STATUS_NOT_IMPLEMENTED))) {
1875 DEBUG(10,("Password change with chgpasswd_user3 failed with: %s, retrying chgpasswd_user2\n",
1876 nt_errstr(result)));
1878 result = rpccli_samr_chgpasswd_user2(cli, state->mem_ctx, user, newpass, oldpass);
1880 /* Windows 2000 returns NT_STATUS_ACCOUNT_RESTRICTION.
1881 Map to the same status code as Windows 2003. */
1883 if ( NT_STATUS_EQUAL(NT_STATUS_ACCOUNT_RESTRICTION, result ) ) {
1884 result = NT_STATUS_PASSWORD_RESTRICTION;
1890 if (NT_STATUS_IS_OK(result)
1891 && (state->request->flags & WBFLAG_PAM_CACHED_LOGIN)
1892 && lp_winbind_offline_logon()) {
1893 result = winbindd_update_creds_by_name(contact_domain, user,
1895 /* Again, this happens when we login from gdm or xdm
1896 * and the password expires, *BUT* cached crendentials
1897 * doesn't exist. winbindd_update_creds_by_name()
1898 * returns NT_STATUS_NO_SUCH_USER.
1899 * This is not a failure.
1902 if (NT_STATUS_EQUAL(result, NT_STATUS_NO_SUCH_USER)) {
1903 result = NT_STATUS_OK;
1906 if (!NT_STATUS_IS_OK(result)) {
1907 DEBUG(10, ("Failed to store creds: %s\n",
1908 nt_errstr(result)));
1909 goto process_result;
1913 if (!NT_STATUS_IS_OK(result) && !got_info && contact_domain) {
1915 NTSTATUS policy_ret;
1917 policy_ret = fillup_password_policy(contact_domain, state);
1919 /* failure of this is non critical, it will just provide no
1920 * additional information to the client why the change has
1921 * failed - Guenther */
1923 if (!NT_STATUS_IS_OK(policy_ret)) {
1924 DEBUG(10,("Failed to get password policies: %s\n", nt_errstr(policy_ret)));
1925 goto process_result;
1931 if (strequal(contact_domain->name, get_global_sam_name())) {
1932 /* FIXME: internal rpc pipe does not cache handles yet */
1934 if (is_valid_policy_hnd(&dom_pol)) {
1935 rpccli_samr_Close(cli, state->mem_ctx, &dom_pol);
1941 set_auth_errors(state->response, result);
1943 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
1944 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
1947 state->response->data.auth.nt_status_string,
1948 state->response->data.auth.pam_error));
1950 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
1953 enum winbindd_result winbindd_dual_pam_logoff(struct winbindd_domain *domain,
1954 struct winbindd_cli_state *state)
1956 NTSTATUS result = NT_STATUS_NOT_SUPPORTED;
1958 DEBUG(3, ("[%5lu]: pam dual logoff %s\n", (unsigned long)state->pid,
1959 state->request->data.logoff.user));
1961 if (!(state->request->flags & WBFLAG_PAM_KRB5)) {
1962 result = NT_STATUS_OK;
1963 goto process_result;
1966 if (state->request->data.logoff.krb5ccname[0] == '\0') {
1967 result = NT_STATUS_OK;
1968 goto process_result;
1973 if (state->request->data.logoff.uid < 0) {
1974 DEBUG(0,("winbindd_pam_logoff: invalid uid\n"));
1975 goto process_result;
1978 /* what we need here is to find the corresponding krb5 ccache name *we*
1979 * created for a given username and destroy it */
1981 if (!ccache_entry_exists(state->request->data.logoff.user)) {
1982 result = NT_STATUS_OK;
1983 DEBUG(10,("winbindd_pam_logoff: no entry found.\n"));
1984 goto process_result;
1987 if (!ccache_entry_identical(state->request->data.logoff.user,
1988 state->request->data.logoff.uid,
1989 state->request->data.logoff.krb5ccname)) {
1990 DEBUG(0,("winbindd_pam_logoff: cached entry differs.\n"));
1991 goto process_result;
1994 result = remove_ccache(state->request->data.logoff.user);
1995 if (!NT_STATUS_IS_OK(result)) {
1996 DEBUG(0,("winbindd_pam_logoff: failed to remove ccache: %s\n",
1997 nt_errstr(result)));
1998 goto process_result;
2002 result = NT_STATUS_NOT_SUPPORTED;
2008 set_auth_errors(state->response, result);
2010 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;
2013 /* Change user password with auth crap*/
2015 enum winbindd_result winbindd_dual_pam_chng_pswd_auth_crap(struct winbindd_domain *domainSt, struct winbindd_cli_state *state)
2018 DATA_BLOB new_nt_password;
2019 DATA_BLOB old_nt_hash_enc;
2020 DATA_BLOB new_lm_password;
2021 DATA_BLOB old_lm_hash_enc;
2022 fstring domain,user;
2023 struct policy_handle dom_pol;
2024 struct winbindd_domain *contact_domain = domainSt;
2025 struct rpc_pipe_client *cli = NULL;
2027 ZERO_STRUCT(dom_pol);
2029 /* Ensure null termination */
2030 state->request->data.chng_pswd_auth_crap.user[
2031 sizeof(state->request->data.chng_pswd_auth_crap.user)-1]=0;
2032 state->request->data.chng_pswd_auth_crap.domain[
2033 sizeof(state->request->data.chng_pswd_auth_crap.domain)-1]=0;
2037 DEBUG(3, ("[%5lu]: pam change pswd auth crap domain: %s user: %s\n",
2038 (unsigned long)state->pid,
2039 state->request->data.chng_pswd_auth_crap.domain,
2040 state->request->data.chng_pswd_auth_crap.user));
2042 if (lp_winbind_offline_logon()) {
2043 DEBUG(0,("Refusing password change as winbind offline logons are enabled. "));
2044 DEBUGADD(0,("Changing passwords here would risk inconsistent logons\n"));
2045 result = NT_STATUS_ACCESS_DENIED;
2049 if (*state->request->data.chng_pswd_auth_crap.domain) {
2050 fstrcpy(domain,state->request->data.chng_pswd_auth_crap.domain);
2052 parse_domain_user(state->request->data.chng_pswd_auth_crap.user,
2056 DEBUG(3,("no domain specified with username (%s) - "
2058 state->request->data.chng_pswd_auth_crap.user));
2059 result = NT_STATUS_NO_SUCH_USER;
2064 if (!*domain && lp_winbind_use_default_domain()) {
2065 fstrcpy(domain,(char *)lp_workgroup());
2069 fstrcpy(user, state->request->data.chng_pswd_auth_crap.user);
2072 DEBUG(3, ("[%5lu]: pam auth crap domain: %s user: %s\n",
2073 (unsigned long)state->pid, domain, user));
2075 /* Change password */
2076 new_nt_password = data_blob_const(
2077 state->request->data.chng_pswd_auth_crap.new_nt_pswd,
2078 state->request->data.chng_pswd_auth_crap.new_nt_pswd_len);
2080 old_nt_hash_enc = data_blob_const(
2081 state->request->data.chng_pswd_auth_crap.old_nt_hash_enc,
2082 state->request->data.chng_pswd_auth_crap.old_nt_hash_enc_len);
2084 if(state->request->data.chng_pswd_auth_crap.new_lm_pswd_len > 0) {
2085 new_lm_password = data_blob_const(
2086 state->request->data.chng_pswd_auth_crap.new_lm_pswd,
2087 state->request->data.chng_pswd_auth_crap.new_lm_pswd_len);
2089 old_lm_hash_enc = data_blob_const(
2090 state->request->data.chng_pswd_auth_crap.old_lm_hash_enc,
2091 state->request->data.chng_pswd_auth_crap.old_lm_hash_enc_len);
2093 new_lm_password.length = 0;
2094 old_lm_hash_enc.length = 0;
2097 /* Get sam handle */
2099 result = cm_connect_sam(contact_domain, state->mem_ctx, &cli, &dom_pol);
2100 if (!NT_STATUS_IS_OK(result)) {
2101 DEBUG(1, ("could not get SAM handle on DC for %s\n", domain));
2105 result = rpccli_samr_chng_pswd_auth_crap(
2106 cli, state->mem_ctx, user, new_nt_password, old_nt_hash_enc,
2107 new_lm_password, old_lm_hash_enc);
2111 if (strequal(contact_domain->name, get_global_sam_name())) {
2112 /* FIXME: internal rpc pipe does not cache handles yet */
2114 if (is_valid_policy_hnd(&dom_pol)) {
2115 rpccli_samr_Close(cli, state->mem_ctx, &dom_pol);
2121 set_auth_errors(state->response, result);
2123 DEBUG(NT_STATUS_IS_OK(result) ? 5 : 2,
2124 ("Password change for user [%s]\\[%s] returned %s (PAM: %d)\n",
2126 state->response->data.auth.nt_status_string,
2127 state->response->data.auth.pam_error));
2129 return NT_STATUS_IS_OK(result) ? WINBINDD_OK : WINBINDD_ERROR;