2 Unix SMB/CIFS implementation.
4 Winbind daemon - krb5 credential cache functions
5 and in-memory cache functions.
7 Copyright (C) Guenther Deschner 2005-2006
8 Copyright (C) Jeremy Allison 2006
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>.
26 #include "../libcli/auth/libcli_auth.h"
28 #include "libads/kerberos_proto.h"
31 #define DBGC_CLASS DBGC_WINBIND
33 /* uncomment this to do fast debugging on the krb5 ticket renewal event */
34 #ifdef DEBUG_KRB5_TKT_RENEWAL
35 #undef DEBUG_KRB5_TKT_RENEWAL
38 #define MAX_CCACHES 100
40 static struct WINBINDD_CCACHE_ENTRY *ccache_list;
41 static void krb5_ticket_gain_handler(struct tevent_context *,
42 struct tevent_timer *,
45 static void add_krb5_ticket_gain_handler_event(struct WINBINDD_CCACHE_ENTRY *,
48 /* The Krb5 ticket refresh handler should be scheduled
49 at one-half of the period from now till the tkt
52 static time_t krb5_event_refresh_time(time_t end_time)
54 time_t rest = end_time - time(NULL);
55 return end_time - rest/2;
58 /****************************************************************
59 Find an entry by name.
60 ****************************************************************/
62 static struct WINBINDD_CCACHE_ENTRY *get_ccache_by_username(const char *username)
64 struct WINBINDD_CCACHE_ENTRY *entry;
66 for (entry = ccache_list; entry; entry = entry->next) {
67 if (strequal(entry->username, username)) {
74 /****************************************************************
76 ****************************************************************/
78 static int ccache_entry_count(void)
80 struct WINBINDD_CCACHE_ENTRY *entry;
83 for (entry = ccache_list; entry; entry = entry->next) {
89 void ccache_remove_all_after_fork(void)
91 struct WINBINDD_CCACHE_ENTRY *cur, *next;
93 for (cur = ccache_list; cur; cur = next) {
95 DLIST_REMOVE(ccache_list, cur);
96 TALLOC_FREE(cur->event);
103 /****************************************************************
104 Do the work of refreshing the ticket.
105 ****************************************************************/
107 static void krb5_ticket_refresh_handler(struct tevent_context *event_ctx,
108 struct tevent_timer *te,
112 struct WINBINDD_CCACHE_ENTRY *entry =
113 talloc_get_type_abort(private_data, struct WINBINDD_CCACHE_ENTRY);
117 time_t expire_time = 0;
118 struct WINBINDD_MEMORY_CREDS *cred_ptr = entry->cred_ptr;
121 DEBUG(10,("krb5_ticket_refresh_handler called\n"));
122 DEBUGADD(10,("event called for: %s, %s\n",
123 entry->ccname, entry->username));
125 TALLOC_FREE(entry->event);
129 /* Kinit again if we have the user password and we can't renew the old
132 * This happens when machine are put to sleep for a very long time. */
134 if (entry->renew_until < time(NULL)) {
136 if (cred_ptr && cred_ptr->pass) {
138 set_effective_uid(entry->uid);
140 ret = kerberos_kinit_password_ext(entry->principal_name,
142 0, /* hm, can we do time correction here ? */
143 &entry->refresh_time,
146 False, /* no PAC required anymore */
148 WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
150 gain_root_privilege();
153 DEBUG(3,("krb5_ticket_refresh_handler: "
154 "could not re-kinit: %s\n",
155 error_message(ret)));
156 /* destroy the ticket because we cannot rekinit
157 * it, ignore error here */
158 ads_kdestroy(entry->ccname);
160 /* Don't break the ticket refresh chain: retry
161 * refreshing ticket sometime later when KDC is
162 * unreachable -- BoYang. More error code handling
166 if ((ret == KRB5_KDC_UNREACH)
167 || (ret == KRB5_REALM_CANT_RESOLVE)) {
168 #if defined(DEBUG_KRB5_TKT_RENEWAL)
169 new_start = time(NULL) + 30;
171 new_start = time(NULL) +
172 MAX(30, lp_winbind_cache_time());
174 add_krb5_ticket_gain_handler_event(entry,
175 timeval_set(new_start, 0));
178 TALLOC_FREE(entry->event);
182 DEBUG(10,("krb5_ticket_refresh_handler: successful re-kinit "
183 "for: %s in ccache: %s\n",
184 entry->principal_name, entry->ccname));
186 #if defined(DEBUG_KRB5_TKT_RENEWAL)
187 new_start = time(NULL) + 30;
189 /* The tkt should be refreshed at one-half the period
190 from now to the expiration time */
191 expire_time = entry->refresh_time;
192 new_start = krb5_event_refresh_time(entry->refresh_time);
197 * No cached credentials
198 * destroy ticket and refresh chain
200 ads_kdestroy(entry->ccname);
201 TALLOC_FREE(entry->event);
206 set_effective_uid(entry->uid);
208 ret = smb_krb5_renew_ticket(entry->ccname,
209 entry->principal_name,
212 #if defined(DEBUG_KRB5_TKT_RENEWAL)
213 new_start = time(NULL) + 30;
215 expire_time = new_start;
216 new_start = krb5_event_refresh_time(new_start);
219 gain_root_privilege();
222 DEBUG(3,("krb5_ticket_refresh_handler: "
223 "could not renew tickets: %s\n",
224 error_message(ret)));
225 /* maybe we are beyond the renewing window */
227 /* evil rises here, we refresh ticket failed,
228 * but the ticket might be expired. Therefore,
229 * When we refresh ticket failed, destory the
232 ads_kdestroy(entry->ccname);
234 /* avoid breaking the renewal chain: retry in
235 * lp_winbind_cache_time() seconds when the KDC was not
236 * available right now.
237 * the return code can be KRB5_REALM_CANT_RESOLVE.
238 * More error code handling here? */
240 if ((ret == KRB5_KDC_UNREACH)
241 || (ret == KRB5_REALM_CANT_RESOLVE)) {
242 #if defined(DEBUG_KRB5_TKT_RENEWAL)
243 new_start = time(NULL) + 30;
245 new_start = time(NULL) +
246 MAX(30, lp_winbind_cache_time());
248 /* ticket is destroyed here, we have to regain it
249 * if it is possible */
250 add_krb5_ticket_gain_handler_event(entry,
251 timeval_set(new_start, 0));
255 /* This is evil, if the ticket was already expired.
256 * renew ticket function returns KRB5KRB_AP_ERR_TKT_EXPIRED.
257 * But there is still a chance that we can rekinit it.
259 * This happens when user login in online mode, and then network
260 * down or something cause winbind goes offline for a very long time,
261 * and then goes online again. ticket expired, renew failed.
262 * This happens when machine are put to sleep for a long time,
263 * but shorter than entry->renew_util.
265 * Looks like the KDC is reachable, we want to rekinit as soon as
266 * possible instead of waiting some time later. */
267 if ((ret == KRB5KRB_AP_ERR_TKT_EXPIRED)
268 || (ret == KRB5_FCC_NOFILE)) goto rekinit;
274 /* in cases that ticket will be unrenewable soon, we don't try to renew ticket
275 * but try to regain ticket if it is possible */
276 if (entry->renew_until && expire_time
277 && (entry->renew_until <= expire_time)) {
278 /* try to regain ticket 10 seconds before expiration */
280 add_krb5_ticket_gain_handler_event(entry,
281 timeval_set(expire_time, 0));
285 if (entry->refresh_time == 0) {
286 entry->refresh_time = new_start;
288 entry->event = event_add_timed(winbind_event_context(), entry,
289 timeval_set(new_start, 0),
290 krb5_ticket_refresh_handler,
296 /****************************************************************
297 Do the work of regaining a ticket when coming from offline auth.
298 ****************************************************************/
300 static void krb5_ticket_gain_handler(struct tevent_context *event_ctx,
301 struct tevent_timer *te,
305 struct WINBINDD_CCACHE_ENTRY *entry =
306 talloc_get_type_abort(private_data, struct WINBINDD_CCACHE_ENTRY);
310 struct WINBINDD_MEMORY_CREDS *cred_ptr = entry->cred_ptr;
311 struct winbindd_domain *domain = NULL;
314 DEBUG(10,("krb5_ticket_gain_handler called\n"));
315 DEBUGADD(10,("event called for: %s, %s\n",
316 entry->ccname, entry->username));
318 TALLOC_FREE(entry->event);
322 if (!cred_ptr || !cred_ptr->pass) {
323 DEBUG(10,("krb5_ticket_gain_handler: no memory creds\n"));
327 if ((domain = find_domain_from_name(entry->realm)) == NULL) {
328 DEBUG(0,("krb5_ticket_gain_handler: unknown domain\n"));
332 if (!domain->online) {
336 set_effective_uid(entry->uid);
338 ret = kerberos_kinit_password_ext(entry->principal_name,
340 0, /* hm, can we do time correction here ? */
341 &entry->refresh_time,
344 False, /* no PAC required anymore */
346 WINBINDD_PAM_AUTH_KRB5_RENEW_TIME,
348 gain_root_privilege();
351 DEBUG(3,("krb5_ticket_gain_handler: "
352 "could not kinit: %s\n",
353 error_message(ret)));
354 /* evil. If we cannot do it, destroy any the __maybe__
355 * __existing__ ticket */
356 ads_kdestroy(entry->ccname);
360 DEBUG(10,("krb5_ticket_gain_handler: "
361 "successful kinit for: %s in ccache: %s\n",
362 entry->principal_name, entry->ccname));
368 #if defined(DEBUG_KRB5_TKT_RENEWAL)
369 t = timeval_set(time(NULL) + 30, 0);
371 t = timeval_current_ofs(MAX(30, lp_winbind_cache_time()), 0);
374 add_krb5_ticket_gain_handler_event(entry, t);
379 #if defined(DEBUG_KRB5_TKT_RENEWAL)
380 t = timeval_set(time(NULL) + 30, 0);
382 t = timeval_set(krb5_event_refresh_time(entry->refresh_time), 0);
385 if (entry->refresh_time == 0) {
386 entry->refresh_time = t.tv_sec;
388 entry->event = event_add_timed(winbind_event_context(),
391 krb5_ticket_refresh_handler,
398 /**************************************************************
399 The gain initial ticket case is recognised as entry->refresh_time
401 **************************************************************/
403 static void add_krb5_ticket_gain_handler_event(struct WINBINDD_CCACHE_ENTRY *entry,
406 entry->refresh_time = 0;
407 entry->event = event_add_timed(winbind_event_context(),
410 krb5_ticket_gain_handler,
414 void ccache_regain_all_now(void)
416 struct WINBINDD_CCACHE_ENTRY *cur;
417 struct timeval t = timeval_current();
419 for (cur = ccache_list; cur; cur = cur->next) {
420 struct tevent_timer *new_event;
423 * if refresh_time is 0, we know that the
424 * the event has the krb5_ticket_gain_handler
426 if (cur->refresh_time == 0) {
427 new_event = event_add_timed(winbind_event_context(),
430 krb5_ticket_gain_handler,
433 new_event = event_add_timed(winbind_event_context(),
436 krb5_ticket_refresh_handler,
444 TALLOC_FREE(cur->event);
445 cur->event = new_event;
451 /****************************************************************
452 Check if an ccache entry exists.
453 ****************************************************************/
455 bool ccache_entry_exists(const char *username)
457 struct WINBINDD_CCACHE_ENTRY *entry = get_ccache_by_username(username);
458 return (entry != NULL);
461 /****************************************************************
462 Ensure we're changing the correct entry.
463 ****************************************************************/
465 bool ccache_entry_identical(const char *username,
469 struct WINBINDD_CCACHE_ENTRY *entry = get_ccache_by_username(username);
475 if (entry->uid != uid) {
476 DEBUG(0,("cache_entry_identical: uid's differ: %u != %u\n",
477 (unsigned int)entry->uid, (unsigned int)uid));
480 if (!strcsequal(entry->ccname, ccname)) {
481 DEBUG(0,("cache_entry_identical: "
482 "ccnames differ: (cache) %s != (client) %s\n",
483 entry->ccname, ccname));
489 NTSTATUS add_ccache_to_list(const char *princ_name,
492 const char *username,
499 bool postponed_request)
501 struct WINBINDD_CCACHE_ENTRY *entry = NULL;
508 if ((username == NULL && princ_name == NULL) ||
509 ccname == NULL || uid < 0) {
510 return NT_STATUS_INVALID_PARAMETER;
513 if (ccache_entry_count() + 1 > MAX_CCACHES) {
514 DEBUG(10,("add_ccache_to_list: "
515 "max number of ccaches reached\n"));
516 return NT_STATUS_NO_MORE_ENTRIES;
519 /* If it is cached login, destroy krb5 ticket
520 * to avoid surprise. */
522 if (postponed_request) {
523 /* ignore KRB5_FCC_NOFILE error here */
524 ret = ads_kdestroy(ccname);
525 if (ret == KRB5_FCC_NOFILE) {
529 DEBUG(0, ("add_ccache_to_list: failed to destroy "
530 "user krb5 ccache %s with %s\n", ccname,
531 error_message(ret)));
532 return krb5_to_nt_status(ret);
534 DEBUG(10, ("add_ccache_to_list: successfully destroyed "
535 "krb5 ccache %s for user %s\n", ccname,
540 /* Reference count old entries */
541 entry = get_ccache_by_username(username);
543 /* Check cached entries are identical. */
544 if (!ccache_entry_identical(username, uid, ccname)) {
545 return NT_STATUS_INVALID_PARAMETER;
548 DEBUG(10,("add_ccache_to_list: "
549 "ref count on entry %s is now %d\n",
550 username, entry->ref_count));
551 /* FIXME: in this case we still might want to have a krb5 cred
552 * event handler created - gd
553 * Add ticket refresh handler here */
555 if (!lp_winbind_refresh_tickets() || renew_until <= 0) {
560 if (postponed_request) {
561 t = timeval_current_ofs(MAX(30, lp_winbind_cache_time()), 0);
562 add_krb5_ticket_gain_handler_event(entry, t);
564 /* Renew at 1/2 the ticket expiration time */
565 #if defined(DEBUG_KRB5_TKT_RENEWAL)
566 t = timeval_set(time(NULL)+30, 0);
568 t = timeval_set(krb5_event_refresh_time(ticket_end),
571 if (!entry->refresh_time) {
572 entry->refresh_time = t.tv_sec;
574 entry->event = event_add_timed(winbind_event_context(),
577 krb5_ticket_refresh_handler,
582 ntret = remove_ccache(username);
583 if (!NT_STATUS_IS_OK(ntret)) {
584 DEBUG(0, ("add_ccache_to_list: Failed to remove krb5 "
585 "ccache %s for user %s\n", entry->ccname,
587 DEBUG(0, ("add_ccache_to_list: error is %s\n",
591 return NT_STATUS_NO_MEMORY;
594 DEBUG(10,("add_ccache_to_list: added krb5_ticket handler\n"));
599 * If we're set up to renew our krb5 tickets, we must
600 * cache the credentials in memory for the ticket
601 * renew function (or increase the reference count
602 * if we're logging in more than once). Fix inspired
603 * by patch from Ian Gordon <ian.gordon@strath.ac.uk>
607 ntret = winbindd_add_memory_creds(username, uid, pass);
608 DEBUG(10, ("winbindd_add_memory_creds returned: %s\n",
614 entry = talloc(NULL, struct WINBINDD_CCACHE_ENTRY);
616 return NT_STATUS_NO_MEMORY;
622 entry->username = talloc_strdup(entry, username);
623 if (!entry->username) {
628 entry->principal_name = talloc_strdup(entry, princ_name);
629 if (!entry->principal_name) {
634 entry->service = talloc_strdup(entry, service);
635 if (!entry->service) {
640 entry->ccname = talloc_strdup(entry, ccname);
641 if (!entry->ccname) {
645 entry->realm = talloc_strdup(entry, realm);
650 entry->create_time = create_time;
651 entry->renew_until = renew_until;
653 entry->ref_count = 1;
655 if (!lp_winbind_refresh_tickets() || renew_until <= 0) {
659 if (postponed_request) {
660 t = timeval_current_ofs(MAX(30, lp_winbind_cache_time()), 0);
661 add_krb5_ticket_gain_handler_event(entry, t);
663 /* Renew at 1/2 the ticket expiration time */
664 #if defined(DEBUG_KRB5_TKT_RENEWAL)
665 t = timeval_set(time(NULL)+30, 0);
667 t = timeval_set(krb5_event_refresh_time(ticket_end), 0);
669 if (entry->refresh_time == 0) {
670 entry->refresh_time = t.tv_sec;
672 entry->event = event_add_timed(winbind_event_context(),
675 krb5_ticket_refresh_handler,
683 DEBUG(10,("add_ccache_to_list: added krb5_ticket handler\n"));
687 DLIST_ADD(ccache_list, entry);
689 DEBUG(10,("add_ccache_to_list: "
690 "added ccache [%s] for user [%s] to the list\n",
695 * If we're set up to renew our krb5 tickets, we must
696 * cache the credentials in memory for the ticket
697 * renew function. Fix inspired by patch from
698 * Ian Gordon <ian.gordon@strath.ac.uk> for
702 ntret = winbindd_add_memory_creds(username, uid, pass);
703 DEBUG(10, ("winbindd_add_memory_creds returned: %s\n",
712 return NT_STATUS_NO_MEMORY;
715 /*******************************************************************
716 Remove a WINBINDD_CCACHE_ENTRY entry and the krb5 ccache if no longer
718 *******************************************************************/
720 NTSTATUS remove_ccache(const char *username)
722 struct WINBINDD_CCACHE_ENTRY *entry = get_ccache_by_username(username);
723 NTSTATUS status = NT_STATUS_OK;
729 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
732 if (entry->ref_count <= 0) {
733 DEBUG(0,("remove_ccache: logic error. "
734 "ref count for user %s = %d\n",
735 username, entry->ref_count));
736 return NT_STATUS_INTERNAL_DB_CORRUPTION;
741 if (entry->ref_count > 0) {
742 DEBUG(10,("remove_ccache: entry %s ref count now %d\n",
743 username, entry->ref_count));
747 /* no references any more */
749 DLIST_REMOVE(ccache_list, entry);
750 TALLOC_FREE(entry->event); /* unregisters events */
753 ret = ads_kdestroy(entry->ccname);
755 /* we ignore the error when there has been no credential cache */
756 if (ret == KRB5_FCC_NOFILE) {
759 DEBUG(0,("remove_ccache: "
760 "failed to destroy user krb5 ccache %s with: %s\n",
761 entry->ccname, error_message(ret)));
763 DEBUG(10,("remove_ccache: "
764 "successfully destroyed krb5 ccache %s for user %s\n",
765 entry->ccname, username));
767 status = krb5_to_nt_status(ret);
771 DEBUG(10,("remove_ccache: removed ccache for user %s\n", username));
776 /*******************************************************************
777 In memory credentials cache code.
778 *******************************************************************/
780 static struct WINBINDD_MEMORY_CREDS *memory_creds_list;
782 /***********************************************************
783 Find an entry on the list by name.
784 ***********************************************************/
786 struct WINBINDD_MEMORY_CREDS *find_memory_creds_by_name(const char *username)
788 struct WINBINDD_MEMORY_CREDS *p;
790 for (p = memory_creds_list; p; p = p->next) {
791 if (strequal(p->username, username)) {
798 /***********************************************************
799 Store the required creds and mlock them.
800 ***********************************************************/
802 static NTSTATUS store_memory_creds(struct WINBINDD_MEMORY_CREDS *memcredp,
805 #if !defined(HAVE_MLOCK)
808 /* new_entry->nt_hash is the base pointer for the block
809 of memory pointed into by new_entry->lm_hash and
810 new_entry->pass (if we're storing plaintext). */
812 memcredp->len = NT_HASH_LEN + LM_HASH_LEN;
814 memcredp->len += strlen(pass)+1;
819 /* aligning the memory on on x86_64 and compiling
820 with gcc 4.1 using -O2 causes a segv in the
821 next memset() --jerry */
822 memcredp->nt_hash = SMB_MALLOC_ARRAY(unsigned char, memcredp->len);
824 /* On non-linux platforms, mlock()'d memory must be aligned */
825 memcredp->nt_hash = SMB_MEMALIGN_ARRAY(unsigned char,
826 getpagesize(), memcredp->len);
828 if (!memcredp->nt_hash) {
829 return NT_STATUS_NO_MEMORY;
831 memset(memcredp->nt_hash, 0x0, memcredp->len);
833 memcredp->lm_hash = memcredp->nt_hash + NT_HASH_LEN;
835 #ifdef DEBUG_PASSWORD
836 DEBUG(10,("mlocking memory: %p\n", memcredp->nt_hash));
838 if ((mlock(memcredp->nt_hash, memcredp->len)) == -1) {
839 DEBUG(0,("failed to mlock memory: %s (%d)\n",
840 strerror(errno), errno));
841 SAFE_FREE(memcredp->nt_hash);
842 return map_nt_error_from_unix(errno);
845 #ifdef DEBUG_PASSWORD
846 DEBUG(10,("mlocked memory: %p\n", memcredp->nt_hash));
850 /* Create and store the password hashes. */
851 E_md4hash(pass, memcredp->nt_hash);
852 E_deshash(pass, memcredp->lm_hash);
854 memcredp->pass = (char *)memcredp->lm_hash + LM_HASH_LEN;
855 memcpy(memcredp->pass, pass,
856 memcredp->len - NT_HASH_LEN - LM_HASH_LEN);
863 /***********************************************************
864 Destroy existing creds.
865 ***********************************************************/
867 static NTSTATUS delete_memory_creds(struct WINBINDD_MEMORY_CREDS *memcredp)
869 #if !defined(HAVE_MUNLOCK)
872 if (munlock(memcredp->nt_hash, memcredp->len) == -1) {
873 DEBUG(0,("failed to munlock memory: %s (%d)\n",
874 strerror(errno), errno));
875 return map_nt_error_from_unix(errno);
877 memset(memcredp->nt_hash, '\0', memcredp->len);
878 SAFE_FREE(memcredp->nt_hash);
879 memcredp->nt_hash = NULL;
880 memcredp->lm_hash = NULL;
881 memcredp->pass = NULL;
887 /***********************************************************
888 Replace the required creds with new ones (password change).
889 ***********************************************************/
891 static NTSTATUS winbindd_replace_memory_creds_internal(struct WINBINDD_MEMORY_CREDS *memcredp,
894 NTSTATUS status = delete_memory_creds(memcredp);
895 if (!NT_STATUS_IS_OK(status)) {
898 return store_memory_creds(memcredp, pass);
901 /*************************************************************
902 Store credentials in memory in a list.
903 *************************************************************/
905 static NTSTATUS winbindd_add_memory_creds_internal(const char *username,
909 /* Shortcut to ensure we don't store if no mlock. */
910 #if !defined(HAVE_MLOCK) || !defined(HAVE_MUNLOCK)
914 struct WINBINDD_MEMORY_CREDS *memcredp = NULL;
916 memcredp = find_memory_creds_by_name(username);
917 if (uid == (uid_t)-1) {
918 DEBUG(0,("winbindd_add_memory_creds_internal: "
919 "invalid uid for user %s.\n", username));
920 return NT_STATUS_INVALID_PARAMETER;
924 /* Already exists. Increment the reference count and replace stored creds. */
925 if (uid != memcredp->uid) {
926 DEBUG(0,("winbindd_add_memory_creds_internal: "
927 "uid %u for user %s doesn't "
928 "match stored uid %u. Replacing.\n",
929 (unsigned int)uid, username,
930 (unsigned int)memcredp->uid));
933 memcredp->ref_count++;
934 DEBUG(10,("winbindd_add_memory_creds_internal: "
935 "ref count for user %s is now %d\n",
936 username, memcredp->ref_count));
937 return winbindd_replace_memory_creds_internal(memcredp, pass);
940 memcredp = talloc_zero(NULL, struct WINBINDD_MEMORY_CREDS);
942 return NT_STATUS_NO_MEMORY;
944 memcredp->username = talloc_strdup(memcredp, username);
945 if (!memcredp->username) {
946 talloc_destroy(memcredp);
947 return NT_STATUS_NO_MEMORY;
950 status = store_memory_creds(memcredp, pass);
951 if (!NT_STATUS_IS_OK(status)) {
952 talloc_destroy(memcredp);
957 memcredp->ref_count = 1;
958 DLIST_ADD(memory_creds_list, memcredp);
960 DEBUG(10,("winbindd_add_memory_creds_internal: "
961 "added entry for user %s\n", username));
967 /*************************************************************
968 Store users credentials in memory. If we also have a
969 struct WINBINDD_CCACHE_ENTRY for this username with a
970 refresh timer, then store the plaintext of the password
971 and associate the new credentials with the struct WINBINDD_CCACHE_ENTRY.
972 *************************************************************/
974 NTSTATUS winbindd_add_memory_creds(const char *username,
978 struct WINBINDD_CCACHE_ENTRY *entry = get_ccache_by_username(username);
981 status = winbindd_add_memory_creds_internal(username, uid, pass);
982 if (!NT_STATUS_IS_OK(status)) {
987 struct WINBINDD_MEMORY_CREDS *memcredp = NULL;
988 memcredp = find_memory_creds_by_name(username);
990 entry->cred_ptr = memcredp;
997 /*************************************************************
998 Decrement the in-memory ref count - delete if zero.
999 *************************************************************/
1001 NTSTATUS winbindd_delete_memory_creds(const char *username)
1003 struct WINBINDD_MEMORY_CREDS *memcredp = NULL;
1004 struct WINBINDD_CCACHE_ENTRY *entry = NULL;
1005 NTSTATUS status = NT_STATUS_OK;
1007 memcredp = find_memory_creds_by_name(username);
1008 entry = get_ccache_by_username(username);
1011 DEBUG(10,("winbindd_delete_memory_creds: unknown user %s\n",
1013 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1016 if (memcredp->ref_count <= 0) {
1017 DEBUG(0,("winbindd_delete_memory_creds: logic error. "
1018 "ref count for user %s = %d\n",
1019 username, memcredp->ref_count));
1020 status = NT_STATUS_INTERNAL_DB_CORRUPTION;
1023 memcredp->ref_count--;
1024 if (memcredp->ref_count <= 0) {
1025 delete_memory_creds(memcredp);
1026 DLIST_REMOVE(memory_creds_list, memcredp);
1027 talloc_destroy(memcredp);
1028 DEBUG(10,("winbindd_delete_memory_creds: "
1029 "deleted entry for user %s\n",
1032 DEBUG(10,("winbindd_delete_memory_creds: "
1033 "entry for user %s ref_count now %d\n",
1034 username, memcredp->ref_count));
1038 /* Ensure we have no dangling references to this. */
1039 entry->cred_ptr = NULL;
1045 /***********************************************************
1046 Replace the required creds with new ones (password change).
1047 ***********************************************************/
1049 NTSTATUS winbindd_replace_memory_creds(const char *username,
1052 struct WINBINDD_MEMORY_CREDS *memcredp = NULL;
1054 memcredp = find_memory_creds_by_name(username);
1056 DEBUG(10,("winbindd_replace_memory_creds: unknown user %s\n",
1058 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
1061 DEBUG(10,("winbindd_replace_memory_creds: replaced creds for user %s\n",
1064 return winbindd_replace_memory_creds_internal(memcredp, pass);