fixed segv on startup with trusted domains
[Samba.git] / source3 / winbindd / idmap_tdb2.c
blob911f80c6a3e17e8dbfbe21121a6d4dea258033f1
1 /*
2 Unix SMB/CIFS implementation.
4 idmap TDB2 backend, used for clustered Samba setups.
6 This uses dbwrap to access tdb files. The location can be set
7 using tdb:idmap2.tdb =" in smb.conf
9 Copyright (C) Andrew Tridgell 2007
11 This is heavily based upon idmap_tdb.c, which is:
13 Copyright (C) Tim Potter 2000
14 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
15 Copyright (C) Jeremy Allison 2006
16 Copyright (C) Simo Sorce 2003-2006
18 This program is free software; you can redistribute it and/or modify
19 it under the terms of the GNU General Public License as published by
20 the Free Software Foundation; either version 2 of the License, or
21 (at your option) any later version.
23 This program is distributed in the hope that it will be useful,
24 but WITHOUT ANY WARRANTY; without even the implied warranty of
25 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 GNU General Public License for more details.
28 You should have received a copy of the GNU General Public License
29 along with this program; if not, write to the Free Software
30 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
33 #include "includes.h"
34 #include "winbindd.h"
36 #undef DBGC_CLASS
37 #define DBGC_CLASS DBGC_IDMAP
39 /* High water mark keys */
40 #define HWM_GROUP "GROUP HWM"
41 #define HWM_USER "USER HWM"
43 static struct idmap_tdb2_state {
44 /* User and group id pool */
45 uid_t low_uid, high_uid; /* Range of uids to allocate */
46 gid_t low_gid, high_gid; /* Range of gids to allocate */
47 const char *idmap_script;
48 } idmap_tdb2_state;
52 /* handle to the permanent tdb */
53 static struct db_context *idmap_tdb2;
55 static NTSTATUS idmap_tdb2_alloc_load(void);
58 open the permanent tdb
60 static NTSTATUS idmap_tdb2_open_db(void)
62 char *db_path;
64 if (idmap_tdb2) {
65 /* its already open */
66 return NT_STATUS_OK;
69 db_path = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL);
70 if (db_path == NULL) {
71 /* fall back to the private directory, which, despite
72 its name, is usually on shared storage */
73 db_path = talloc_asprintf(NULL, "%s/idmap2.tdb", lp_private_dir());
75 NT_STATUS_HAVE_NO_MEMORY(db_path);
77 /* Open idmap repository */
78 idmap_tdb2 = db_open(NULL, db_path, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
79 TALLOC_FREE(db_path);
81 if (idmap_tdb2 == NULL) {
82 DEBUG(0, ("Unable to open idmap_tdb2 database '%s'\n",
83 db_path));
84 return NT_STATUS_UNSUCCESSFUL;
87 /* load the ranges and high/low water marks */
88 return idmap_tdb2_alloc_load();
93 load the idmap allocation ranges and high/low water marks
95 static NTSTATUS idmap_tdb2_alloc_load(void)
97 const char *range;
98 uid_t low_uid = 0;
99 uid_t high_uid = 0;
100 gid_t low_gid = 0;
101 gid_t high_gid = 0;
102 uint32 low_id, high_id;
104 /* see if a idmap script is configured */
105 idmap_tdb2_state.idmap_script = lp_parm_const_string(-1, "idmap",
106 "script", NULL);
108 if (idmap_tdb2_state.idmap_script) {
109 DEBUG(1, ("using idmap script '%s'\n",
110 idmap_tdb2_state.idmap_script));
113 /* load ranges */
115 /* Create high water marks for group and user id */
116 if (!lp_idmap_uid(&low_uid, &high_uid)
117 || !lp_idmap_gid(&low_gid, &high_gid)) {
118 DEBUG(1, ("idmap uid or idmap gid missing\n"));
119 return NT_STATUS_UNSUCCESSFUL;
122 idmap_tdb2_state.low_uid = low_uid;
123 idmap_tdb2_state.high_uid = high_uid;
124 idmap_tdb2_state.low_gid = low_gid;
125 idmap_tdb2_state.high_gid = high_gid;
127 if (idmap_tdb2_state.high_uid <= idmap_tdb2_state.low_uid) {
128 DEBUG(1, ("idmap uid range missing or invalid\n"));
129 DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n"));
130 return NT_STATUS_UNSUCCESSFUL;
133 if (((low_id = dbwrap_fetch_int32(idmap_tdb2,
134 HWM_USER)) == -1) ||
135 (low_id < idmap_tdb2_state.low_uid)) {
136 if (!NT_STATUS_IS_OK(dbwrap_trans_store_int32(
137 idmap_tdb2, HWM_USER,
138 idmap_tdb2_state.low_uid))) {
139 DEBUG(0, ("Unable to initialise user hwm in idmap "
140 "database\n"));
141 return NT_STATUS_INTERNAL_DB_ERROR;
145 if (idmap_tdb2_state.high_gid <= idmap_tdb2_state.low_gid) {
146 DEBUG(1, ("idmap gid range missing or invalid\n"));
147 DEBUGADD(1, ("idmap will be unable to map foreign SIDs\n"));
148 return NT_STATUS_UNSUCCESSFUL;
151 if (((low_id = dbwrap_fetch_int32(idmap_tdb2,
152 HWM_GROUP)) == -1) ||
153 (low_id < idmap_tdb2_state.low_gid)) {
154 if (!NT_STATUS_IS_OK(dbwrap_trans_store_int32(
155 idmap_tdb2, HWM_GROUP,
156 idmap_tdb2_state.low_gid))) {
157 DEBUG(0, ("Unable to initialise group hwm in idmap "
158 "database\n"));
159 return NT_STATUS_INTERNAL_DB_ERROR;
163 return NT_STATUS_OK;
168 Initialise idmap alloc database.
170 static NTSTATUS idmap_tdb2_alloc_init(const char *params)
172 /* nothing to do - we want to avoid opening the permanent
173 database if possible. Instead we load the params when we
174 first need it. */
175 return NT_STATUS_OK;
180 Allocate a new id.
182 static NTSTATUS idmap_tdb2_allocate_id(struct unixid *xid)
184 bool ret;
185 const char *hwmkey;
186 const char *hwmtype;
187 uint32_t high_hwm;
188 uint32_t hwm;
189 int res;
190 NTSTATUS status;
192 status = idmap_tdb2_open_db();
193 NT_STATUS_NOT_OK_RETURN(status);
195 /* Get current high water mark */
196 switch (xid->type) {
198 case ID_TYPE_UID:
199 hwmkey = HWM_USER;
200 hwmtype = "UID";
201 high_hwm = idmap_tdb2_state.high_uid;
202 break;
204 case ID_TYPE_GID:
205 hwmkey = HWM_GROUP;
206 hwmtype = "GID";
207 high_hwm = idmap_tdb2_state.high_gid;
208 break;
210 default:
211 DEBUG(2, ("Invalid ID type (0x%x)\n", xid->type));
212 return NT_STATUS_INVALID_PARAMETER;
215 res = idmap_tdb2->transaction_start(idmap_tdb2);
216 if (res != 0) {
217 DEBUG(1,(__location__ " Failed to start transaction\n"));
218 return NT_STATUS_UNSUCCESSFUL;
221 if ((hwm = dbwrap_fetch_int32(idmap_tdb2, hwmkey)) == -1) {
222 idmap_tdb2->transaction_cancel(idmap_tdb2);
223 return NT_STATUS_INTERNAL_DB_ERROR;
226 /* check it is in the range */
227 if (hwm > high_hwm) {
228 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
229 hwmtype, (unsigned long)high_hwm));
230 idmap_tdb2->transaction_cancel(idmap_tdb2);
231 return NT_STATUS_UNSUCCESSFUL;
234 /* fetch a new id and increment it */
235 ret = dbwrap_change_uint32_atomic(idmap_tdb2, hwmkey, &hwm, 1);
236 if (ret == -1) {
237 DEBUG(1, ("Fatal error while fetching a new %s value\n!", hwmtype));
238 idmap_tdb2->transaction_cancel(idmap_tdb2);
239 return NT_STATUS_UNSUCCESSFUL;
242 /* recheck it is in the range */
243 if (hwm > high_hwm) {
244 DEBUG(1, ("Fatal Error: %s range full!! (max: %lu)\n",
245 hwmtype, (unsigned long)high_hwm));
246 idmap_tdb2->transaction_cancel(idmap_tdb2);
247 return NT_STATUS_UNSUCCESSFUL;
250 res = idmap_tdb2->transaction_commit(idmap_tdb2);
251 if (res != 0) {
252 DEBUG(1,(__location__ " Failed to commit transaction\n"));
253 return NT_STATUS_UNSUCCESSFUL;
256 xid->id = hwm;
257 DEBUG(10,("New %s = %d\n", hwmtype, hwm));
259 return NT_STATUS_OK;
263 Get current highest id.
265 static NTSTATUS idmap_tdb2_get_hwm(struct unixid *xid)
267 const char *hwmkey;
268 const char *hwmtype;
269 uint32_t hwm;
270 uint32_t high_hwm;
271 NTSTATUS status;
273 status = idmap_tdb2_open_db();
274 NT_STATUS_NOT_OK_RETURN(status);
276 /* Get current high water mark */
277 switch (xid->type) {
279 case ID_TYPE_UID:
280 hwmkey = HWM_USER;
281 hwmtype = "UID";
282 high_hwm = idmap_tdb2_state.high_uid;
283 break;
285 case ID_TYPE_GID:
286 hwmkey = HWM_GROUP;
287 hwmtype = "GID";
288 high_hwm = idmap_tdb2_state.high_gid;
289 break;
291 default:
292 return NT_STATUS_INVALID_PARAMETER;
295 if ((hwm = dbwrap_fetch_int32(idmap_tdb2, hwmkey)) == -1) {
296 return NT_STATUS_INTERNAL_DB_ERROR;
299 xid->id = hwm;
301 /* Warn if it is out of range */
302 if (hwm >= high_hwm) {
303 DEBUG(0, ("Warning: %s range full!! (max: %lu)\n",
304 hwmtype, (unsigned long)high_hwm));
307 return NT_STATUS_OK;
311 Set high id.
313 static NTSTATUS idmap_tdb2_set_hwm(struct unixid *xid)
315 /* not supported, or we would invalidate the cache tdb on
316 other nodes */
317 DEBUG(0,("idmap_tdb2_set_hwm not supported\n"));
318 return NT_STATUS_NOT_SUPPORTED;
322 Close the alloc tdb
324 static NTSTATUS idmap_tdb2_alloc_close(void)
326 /* don't actually close it */
327 return NT_STATUS_OK;
331 IDMAP MAPPING TDB BACKEND
333 struct idmap_tdb2_context {
334 uint32_t filter_low_id;
335 uint32_t filter_high_id;
339 Initialise idmap database.
341 static NTSTATUS idmap_tdb2_db_init(struct idmap_domain *dom,
342 const char *params)
344 NTSTATUS ret;
345 struct idmap_tdb2_context *ctx;
346 char *config_option = NULL;
347 const char *range;
348 NTSTATUS status;
350 status = idmap_tdb2_open_db();
351 NT_STATUS_NOT_OK_RETURN(status);
353 ctx = talloc(dom, struct idmap_tdb2_context);
354 if ( ! ctx) {
355 DEBUG(0, ("Out of memory!\n"));
356 return NT_STATUS_NO_MEMORY;
359 config_option = talloc_asprintf(ctx, "idmap config %s", dom->name);
360 if ( ! config_option) {
361 DEBUG(0, ("Out of memory!\n"));
362 ret = NT_STATUS_NO_MEMORY;
363 goto failed;
366 range = lp_parm_const_string(-1, config_option, "range", NULL);
367 if (( ! range) ||
368 (sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) ||
369 (ctx->filter_low_id > ctx->filter_high_id)) {
370 ctx->filter_low_id = 0;
371 ctx->filter_high_id = 0;
374 dom->private_data = ctx;
376 talloc_free(config_option);
377 return NT_STATUS_OK;
379 failed:
380 talloc_free(ctx);
381 return ret;
386 run a script to perform a mapping
388 The script should the following command lines:
390 SIDTOID S-1-xxxx
391 IDTOSID UID xxxx
392 IDTOSID GID xxxx
394 and should return one of the following as a single line of text
395 UID:xxxx
396 GID:xxxx
397 SID:xxxx
398 ERR:xxxx
400 static NTSTATUS idmap_tdb2_script(struct idmap_tdb2_context *ctx, struct id_map *map,
401 const char *fmt, ...)
403 va_list ap;
404 char *cmd;
405 FILE *p;
406 char line[64];
407 unsigned long v;
409 cmd = talloc_asprintf(ctx, "%s ", idmap_tdb2_state.idmap_script);
410 NT_STATUS_HAVE_NO_MEMORY(cmd);
412 va_start(ap, fmt);
413 cmd = talloc_vasprintf_append(cmd, fmt, ap);
414 va_end(ap);
415 NT_STATUS_HAVE_NO_MEMORY(cmd);
417 p = popen(cmd, "r");
418 talloc_free(cmd);
419 if (p == NULL) {
420 return NT_STATUS_NONE_MAPPED;
423 if (fgets(line, sizeof(line)-1, p) == NULL) {
424 pclose(p);
425 return NT_STATUS_NONE_MAPPED;
427 pclose(p);
429 DEBUG(10,("idmap script gave: %s\n", line));
431 if (sscanf(line, "UID:%lu", &v) == 1) {
432 map->xid.id = v;
433 map->xid.type = ID_TYPE_UID;
434 } else if (sscanf(line, "GID:%lu", &v) == 1) {
435 map->xid.id = v;
436 map->xid.type = ID_TYPE_GID;
437 } else if (strncmp(line, "SID:S-", 6) == 0) {
438 if (!string_to_sid(map->sid, &line[4])) {
439 DEBUG(0,("Bad SID in '%s' from idmap script %s\n",
440 line, idmap_tdb2_state.idmap_script));
441 return NT_STATUS_NONE_MAPPED;
443 } else {
444 DEBUG(0,("Bad reply '%s' from idmap script %s\n",
445 line, idmap_tdb2_state.idmap_script));
446 return NT_STATUS_NONE_MAPPED;
449 return NT_STATUS_OK;
455 Single id to sid lookup function.
457 static NTSTATUS idmap_tdb2_id_to_sid(struct idmap_tdb2_context *ctx, struct id_map *map)
459 NTSTATUS ret;
460 TDB_DATA data;
461 char *keystr;
462 NTSTATUS status;
464 status = idmap_tdb2_open_db();
465 NT_STATUS_NOT_OK_RETURN(status);
467 if (!ctx || !map) {
468 return NT_STATUS_INVALID_PARAMETER;
471 /* apply filters before checking */
472 if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) ||
473 (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) {
474 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
475 map->xid.id, ctx->filter_low_id, ctx->filter_high_id));
476 return NT_STATUS_NONE_MAPPED;
479 switch (map->xid.type) {
481 case ID_TYPE_UID:
482 keystr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
483 break;
485 case ID_TYPE_GID:
486 keystr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
487 break;
489 default:
490 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
491 return NT_STATUS_INVALID_PARAMETER;
494 /* final SAFE_FREE safe */
495 data.dptr = NULL;
497 if (keystr == NULL) {
498 DEBUG(0, ("Out of memory!\n"));
499 ret = NT_STATUS_NO_MEMORY;
500 goto done;
503 DEBUG(10,("Fetching record %s\n", keystr));
505 /* Check if the mapping exists */
506 data = dbwrap_fetch_bystring(idmap_tdb2, keystr, keystr);
508 if (!data.dptr) {
509 fstring sidstr;
511 DEBUG(10,("Record %s not found\n", keystr));
512 if (idmap_tdb2_state.idmap_script == NULL) {
513 ret = NT_STATUS_NONE_MAPPED;
514 goto done;
517 ret = idmap_tdb2_script(ctx, map, "IDTOSID %s", keystr);
519 /* store it on shared storage */
520 if (!NT_STATUS_IS_OK(ret)) {
521 goto done;
524 if (sid_to_fstring(sidstr, map->sid)) {
525 /* both forward and reverse mappings */
526 dbwrap_store_bystring(idmap_tdb2, keystr,
527 string_term_tdb_data(sidstr),
528 TDB_REPLACE);
529 dbwrap_store_bystring(idmap_tdb2, sidstr,
530 string_term_tdb_data(keystr),
531 TDB_REPLACE);
533 goto done;
536 if (!string_to_sid(map->sid, (const char *)data.dptr)) {
537 DEBUG(10,("INVALID SID (%s) in record %s\n",
538 (const char *)data.dptr, keystr));
539 ret = NT_STATUS_INTERNAL_DB_ERROR;
540 goto done;
543 DEBUG(10,("Found record %s -> %s\n", keystr, (const char *)data.dptr));
544 ret = NT_STATUS_OK;
546 done:
547 talloc_free(keystr);
548 return ret;
553 Single sid to id lookup function.
555 static NTSTATUS idmap_tdb2_sid_to_id(struct idmap_tdb2_context *ctx, struct id_map *map)
557 NTSTATUS ret;
558 TDB_DATA data;
559 char *keystr;
560 unsigned long rec_id = 0;
561 NTSTATUS status;
563 status = idmap_tdb2_open_db();
564 NT_STATUS_NOT_OK_RETURN(status);
566 if ((keystr = sid_string_talloc(ctx, map->sid)) == NULL) {
567 DEBUG(0, ("Out of memory!\n"));
568 ret = NT_STATUS_NO_MEMORY;
569 goto done;
572 DEBUG(10,("Fetching record %s\n", keystr));
574 /* Check if sid is present in database */
575 data = dbwrap_fetch_bystring(idmap_tdb2, keystr, keystr);
576 if (!data.dptr) {
577 fstring idstr;
579 DEBUG(10,(__location__ " Record %s not found\n", keystr));
581 if (idmap_tdb2_state.idmap_script == NULL) {
582 ret = NT_STATUS_NONE_MAPPED;
583 goto done;
586 ret = idmap_tdb2_script(ctx, map, "SIDTOID %s", keystr);
587 /* store it on shared storage */
588 if (!NT_STATUS_IS_OK(ret)) {
589 goto done;
592 snprintf(idstr, sizeof(idstr), "%cID %lu",
593 map->xid.type == ID_TYPE_UID?'U':'G',
594 (unsigned long)map->xid.id);
595 /* store both forward and reverse mappings */
596 dbwrap_store_bystring(idmap_tdb2, keystr, string_term_tdb_data(idstr),
597 TDB_REPLACE);
598 dbwrap_store_bystring(idmap_tdb2, idstr, string_term_tdb_data(keystr),
599 TDB_REPLACE);
600 goto done;
603 /* What type of record is this ? */
604 if (sscanf((const char *)data.dptr, "UID %lu", &rec_id) == 1) { /* Try a UID record. */
605 map->xid.id = rec_id;
606 map->xid.type = ID_TYPE_UID;
607 DEBUG(10,("Found uid record %s -> %s \n", keystr, (const char *)data.dptr ));
608 ret = NT_STATUS_OK;
610 } else if (sscanf((const char *)data.dptr, "GID %lu", &rec_id) == 1) { /* Try a GID record. */
611 map->xid.id = rec_id;
612 map->xid.type = ID_TYPE_GID;
613 DEBUG(10,("Found gid record %s -> %s \n", keystr, (const char *)data.dptr ));
614 ret = NT_STATUS_OK;
616 } else { /* Unknown record type ! */
617 DEBUG(2, ("Found INVALID record %s -> %s\n", keystr, (const char *)data.dptr));
618 ret = NT_STATUS_INTERNAL_DB_ERROR;
621 /* apply filters before returning result */
622 if ((ctx->filter_low_id && (map->xid.id < ctx->filter_low_id)) ||
623 (ctx->filter_high_id && (map->xid.id > ctx->filter_high_id))) {
624 DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
625 map->xid.id, ctx->filter_low_id, ctx->filter_high_id));
626 ret = NT_STATUS_NONE_MAPPED;
629 done:
630 talloc_free(keystr);
631 return ret;
635 lookup a set of unix ids.
637 static NTSTATUS idmap_tdb2_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
639 struct idmap_tdb2_context *ctx;
640 NTSTATUS ret;
641 int i;
643 ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
645 for (i = 0; ids[i]; i++) {
646 ret = idmap_tdb2_id_to_sid(ctx, ids[i]);
647 if ( ! NT_STATUS_IS_OK(ret)) {
649 /* if it is just a failed mapping continue */
650 if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
652 /* make sure it is marked as unmapped */
653 ids[i]->status = ID_UNMAPPED;
654 continue;
657 /* some fatal error occurred, return immediately */
658 goto done;
661 /* all ok, id is mapped */
662 ids[i]->status = ID_MAPPED;
665 ret = NT_STATUS_OK;
667 done:
668 return ret;
672 lookup a set of sids.
674 static NTSTATUS idmap_tdb2_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
676 struct idmap_tdb2_context *ctx;
677 NTSTATUS ret;
678 int i;
680 ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
682 for (i = 0; ids[i]; i++) {
683 ret = idmap_tdb2_sid_to_id(ctx, ids[i]);
684 if ( ! NT_STATUS_IS_OK(ret)) {
686 /* if it is just a failed mapping continue */
687 if (NT_STATUS_EQUAL(ret, NT_STATUS_NONE_MAPPED)) {
689 /* make sure it is marked as unmapped */
690 ids[i]->status = ID_UNMAPPED;
691 continue;
694 /* some fatal error occurred, return immediately */
695 goto done;
698 /* all ok, id is mapped */
699 ids[i]->status = ID_MAPPED;
702 ret = NT_STATUS_OK;
704 done:
705 return ret;
710 set a mapping.
712 static NTSTATUS idmap_tdb2_set_mapping(struct idmap_domain *dom, const struct id_map *map)
714 struct idmap_tdb2_context *ctx;
715 NTSTATUS ret;
716 TDB_DATA data;
717 char *ksidstr, *kidstr;
718 int res;
719 bool started_transaction = false;
721 if (!map || !map->sid) {
722 return NT_STATUS_INVALID_PARAMETER;
725 ksidstr = kidstr = NULL;
727 /* TODO: should we filter a set_mapping using low/high filters ? */
729 ctx = talloc_get_type(dom->private_data, struct idmap_tdb2_context);
731 switch (map->xid.type) {
733 case ID_TYPE_UID:
734 kidstr = talloc_asprintf(ctx, "UID %lu", (unsigned long)map->xid.id);
735 break;
737 case ID_TYPE_GID:
738 kidstr = talloc_asprintf(ctx, "GID %lu", (unsigned long)map->xid.id);
739 break;
741 default:
742 DEBUG(2, ("INVALID unix ID type: 0x02%x\n", map->xid.type));
743 return NT_STATUS_INVALID_PARAMETER;
746 if (kidstr == NULL) {
747 DEBUG(0, ("ERROR: Out of memory!\n"));
748 ret = NT_STATUS_NO_MEMORY;
749 goto done;
752 if (!(ksidstr = sid_string_talloc(ctx, map->sid))) {
753 DEBUG(0, ("Out of memory!\n"));
754 ret = NT_STATUS_NO_MEMORY;
755 goto done;
758 DEBUG(10, ("Storing %s <-> %s map\n", ksidstr, kidstr));
760 res = idmap_tdb2->transaction_start(idmap_tdb2);
761 if (res != 0) {
762 DEBUG(1,(__location__ " Failed to start transaction\n"));
763 ret = NT_STATUS_UNSUCCESSFUL;
764 goto done;
767 started_transaction = true;
769 /* check wheter sid mapping is already present in db */
770 data = dbwrap_fetch_bystring(idmap_tdb2, ksidstr, ksidstr);
771 if (data.dptr) {
772 ret = NT_STATUS_OBJECT_NAME_COLLISION;
773 goto done;
776 ret = dbwrap_store_bystring(idmap_tdb2, ksidstr, string_term_tdb_data(kidstr),
777 TDB_INSERT);
778 if (!NT_STATUS_IS_OK(ret)) {
779 DEBUG(0, ("Error storing SID -> ID: %s\n", nt_errstr(ret)));
780 goto done;
782 ret = dbwrap_store_bystring(idmap_tdb2, kidstr, string_term_tdb_data(ksidstr),
783 TDB_INSERT);
784 if (!NT_STATUS_IS_OK(ret)) {
785 DEBUG(0, ("Error storing ID -> SID: %s\n", nt_errstr(ret)));
786 /* try to remove the previous stored SID -> ID map */
787 dbwrap_delete_bystring(idmap_tdb2, ksidstr);
788 goto done;
791 started_transaction = false;
793 res = idmap_tdb2->transaction_commit(idmap_tdb2);
794 if (res != 0) {
795 DEBUG(1,(__location__ " Failed to commit transaction\n"));
796 ret = NT_STATUS_UNSUCCESSFUL;
797 goto done;
800 DEBUG(10,("Stored %s <-> %s\n", ksidstr, kidstr));
801 ret = NT_STATUS_OK;
803 done:
804 if (started_transaction) {
805 idmap_tdb2->transaction_cancel(idmap_tdb2);
807 talloc_free(ksidstr);
808 talloc_free(kidstr);
809 return ret;
813 remove a mapping.
815 static NTSTATUS idmap_tdb2_remove_mapping(struct idmap_domain *dom, const struct id_map *map)
817 /* not supported as it would invalidate the cache tdb on other
818 nodes */
819 DEBUG(0,("idmap_tdb2_remove_mapping not supported\n"));
820 return NT_STATUS_NOT_SUPPORTED;
824 Close the idmap tdb instance
826 static NTSTATUS idmap_tdb2_close(struct idmap_domain *dom)
828 /* don't do anything */
829 return NT_STATUS_OK;
834 Dump all mappings out
836 static NTSTATUS idmap_tdb2_dump_data(struct idmap_domain *dom, struct id_map **maps, int *num_maps)
838 DEBUG(0,("idmap_tdb2_dump_data not supported\n"));
839 return NT_STATUS_NOT_SUPPORTED;
842 static struct idmap_methods db_methods = {
843 .init = idmap_tdb2_db_init,
844 .unixids_to_sids = idmap_tdb2_unixids_to_sids,
845 .sids_to_unixids = idmap_tdb2_sids_to_unixids,
846 .set_mapping = idmap_tdb2_set_mapping,
847 .remove_mapping = idmap_tdb2_remove_mapping,
848 .dump_data = idmap_tdb2_dump_data,
849 .close_fn = idmap_tdb2_close
852 static struct idmap_alloc_methods db_alloc_methods = {
853 .init = idmap_tdb2_alloc_init,
854 .allocate_id = idmap_tdb2_allocate_id,
855 .get_id_hwm = idmap_tdb2_get_hwm,
856 .set_id_hwm = idmap_tdb2_set_hwm,
857 .close_fn = idmap_tdb2_alloc_close
860 NTSTATUS idmap_tdb2_init(void)
862 NTSTATUS ret;
864 /* register both backends */
865 ret = smb_register_idmap_alloc(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_alloc_methods);
866 if (! NT_STATUS_IS_OK(ret)) {
867 DEBUG(0, ("Unable to register idmap alloc tdb2 module: %s\n", get_friendly_nt_error_msg(ret)));
868 return ret;
871 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb2", &db_methods);