2 Unix SMB/CIFS implementation.
6 Copyright (C) Tim Potter 2000
7 Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2003
8 Copyright (C) Jeremy Allison 2006
9 Copyright (C) Simo Sorce 2003-2006
10 Copyright (C) Michael Adam 2009-2010
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 3 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program. If not, see <http://www.gnu.org/licenses/>.
27 #include "system/filesys.h"
31 #include "idmap_tdb_common.h"
32 #include "dbwrap/dbwrap.h"
33 #include "dbwrap/dbwrap_open.h"
34 #include "../libcli/security/security.h"
38 #define DBGC_CLASS DBGC_IDMAP
40 /* idmap version determines auto-conversion - this is the database
41 structure version specifier. */
43 #define IDMAP_VERSION 2
45 /* High water mark keys */
46 #define HWM_GROUP "GROUP HWM"
47 #define HWM_USER "USER HWM"
49 struct convert_fn_state {
50 struct db_context *db;
54 /*****************************************************************************
55 For idmap conversion: convert one record to new format
56 Ancient versions (eg 2.2.3a) of winbindd_idmap.tdb mapped DOMAINNAME/rid
58 *****************************************************************************/
59 static int convert_fn(struct db_record *rec, void *private_data)
61 struct winbindd_domain *domain;
71 struct convert_fn_state *s = (struct convert_fn_state *)private_data;
73 key = dbwrap_record_get_key(rec);
75 DEBUG(10,("Converting %s\n", (const char *)key.dptr));
77 p = strchr((const char *)key.dptr, '/');
82 fstrcpy(dom_name, (const char *)key.dptr);
85 domain = find_domain_from_name(dom_name);
87 /* We must delete the old record. */
88 DEBUG(0,("Unable to find domain %s\n", dom_name ));
89 DEBUG(0,("deleting record %s\n", (const char *)key.dptr ));
91 status = dbwrap_record_delete(rec);
92 if (!NT_STATUS_IS_OK(status)) {
93 DEBUG(0, ("Unable to delete record %s:%s\n",
94 (const char *)key.dptr,
105 sid_compose(&sid, &domain->sid, rid);
107 sid_to_fstring(keystr, &sid);
108 key2 = string_term_tdb_data(keystr);
110 value = dbwrap_record_get_value(rec);
112 status = dbwrap_store(s->db, key2, value, TDB_INSERT);
113 if (!NT_STATUS_IS_OK(status)) {
114 DEBUG(0,("Unable to add record %s:%s\n",
115 (const char *)key2.dptr,
121 status = dbwrap_store(s->db, value, key2, TDB_REPLACE);
122 if (!NT_STATUS_IS_OK(status)) {
123 DEBUG(0,("Unable to update record %s:%s\n",
124 (const char *)value.dptr,
130 status = dbwrap_record_delete(rec);
131 if (!NT_STATUS_IS_OK(status)) {
132 DEBUG(0,("Unable to delete record %s:%s\n",
133 (const char *)key.dptr,
142 /*****************************************************************************
143 Convert the idmap database from an older version.
144 *****************************************************************************/
146 static bool idmap_tdb_upgrade(struct idmap_domain *dom, struct db_context *db)
149 bool bigendianheader;
150 struct convert_fn_state s;
153 /* If we are bigendian, tdb is bigendian if NOT converted. */
156 unsigned char small[2];
159 if (u.small[0] == 0x01)
160 bigendianheader = !(dbwrap_get_flags(db) & TDB_CONVERT);
162 assert(u.small[0] == 0x02);
163 bigendianheader = (dbwrap_get_flags(db) & TDB_CONVERT);
165 DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n"));
167 status = dbwrap_fetch_int32_bystring(db, "IDMAP_VERSION", &vers);
168 if (!NT_STATUS_IS_OK(status)) {
172 if (((vers == -1) && bigendianheader) || (IREV(vers) == IDMAP_VERSION)) {
173 /* Arrggghh ! Bytereversed or old big-endian - make order independent ! */
175 * high and low records were created on a
176 * big endian machine and will need byte-reversing.
181 status = dbwrap_fetch_int32_bystring(db, HWM_USER, &wm);
182 if (!NT_STATUS_IS_OK(status)) {
192 status = dbwrap_store_int32_bystring(db, HWM_USER, wm);
193 if (!NT_STATUS_IS_OK(status)) {
194 DEBUG(0, ("Unable to byteswap user hwm in idmap "
195 "database: %s\n", nt_errstr(status)));
199 status = dbwrap_fetch_int32_bystring(db, HWM_GROUP, &wm);
200 if (!NT_STATUS_IS_OK(status)) {
210 status = dbwrap_store_int32_bystring(db, HWM_GROUP, wm);
211 if (!NT_STATUS_IS_OK(status)) {
212 DEBUG(0, ("Unable to byteswap group hwm in idmap "
213 "database: %s\n", nt_errstr(status)));
221 /* the old format stored as DOMAIN/rid - now we store the SID direct */
222 status = dbwrap_traverse(db, convert_fn, &s, NULL);
224 if (!NT_STATUS_IS_OK(status)) {
225 DEBUG(0, ("Database traverse failed during conversion\n"));
230 DEBUG(0, ("Problem during conversion\n"));
234 status = dbwrap_store_int32_bystring(db, "IDMAP_VERSION",
236 if (!NT_STATUS_IS_OK(status)) {
237 DEBUG(0, ("Unable to store idmap version in database: %s\n",
245 static NTSTATUS idmap_tdb_init_hwm(struct idmap_domain *dom)
249 bool update_uid = false;
250 bool update_gid = false;
251 struct idmap_tdb_common_context *ctx;
254 ctx = talloc_get_type(dom->private_data,
255 struct idmap_tdb_common_context);
257 status = dbwrap_fetch_uint32_bystring(ctx->db, HWM_USER, &low_uid);
258 if (!NT_STATUS_IS_OK(status) || low_uid < dom->low_id) {
262 status = dbwrap_fetch_uint32_bystring(ctx->db, HWM_GROUP, &low_gid);
263 if (!NT_STATUS_IS_OK(status) || low_gid < dom->low_id) {
267 if (!update_uid && !update_gid) {
271 if (dbwrap_transaction_start(ctx->db) != 0) {
272 DEBUG(0, ("Unable to start upgrade transaction!\n"));
273 return NT_STATUS_INTERNAL_DB_ERROR;
277 status = dbwrap_store_uint32_bystring(ctx->db, HWM_USER,
279 if (!NT_STATUS_IS_OK(status)) {
280 dbwrap_transaction_cancel(ctx->db);
281 DEBUG(0, ("Unable to initialise user hwm in idmap "
282 "database: %s\n", nt_errstr(status)));
283 return NT_STATUS_INTERNAL_DB_ERROR;
288 status = dbwrap_store_uint32_bystring(ctx->db, HWM_GROUP,
290 if (!NT_STATUS_IS_OK(status)) {
291 dbwrap_transaction_cancel(ctx->db);
292 DEBUG(0, ("Unable to initialise group hwm in idmap "
293 "database: %s\n", nt_errstr(status)));
294 return NT_STATUS_INTERNAL_DB_ERROR;
298 if (dbwrap_transaction_commit(ctx->db) != 0) {
299 DEBUG(0, ("Unable to commit upgrade transaction!\n"));
300 return NT_STATUS_INTERNAL_DB_ERROR;
306 static NTSTATUS idmap_tdb_open_db(struct idmap_domain *dom)
310 char *tdbfile = NULL;
311 struct db_context *db = NULL;
313 bool config_error = false;
314 struct idmap_tdb_common_context *ctx;
316 ctx = talloc_get_type(dom->private_data,
317 struct idmap_tdb_common_context);
320 /* it is already open */
324 /* use our own context here */
325 mem_ctx = talloc_stackframe();
327 /* use the old database if present */
328 tdbfile = state_path("winbindd_idmap.tdb");
330 DEBUG(0, ("Out of memory!\n"));
331 ret = NT_STATUS_NO_MEMORY;
335 DEBUG(10,("Opening tdbfile %s\n", tdbfile ));
337 /* Open idmap repository */
338 db = db_open(mem_ctx, tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644,
339 DBWRAP_LOCK_ORDER_1);
341 DEBUG(0, ("Unable to open idmap database\n"));
342 ret = NT_STATUS_UNSUCCESSFUL;
346 /* check against earlier versions */
347 ret = dbwrap_fetch_int32_bystring(db, "IDMAP_VERSION", &version);
348 if (!NT_STATUS_IS_OK(ret)) {
352 if (version != IDMAP_VERSION) {
354 DEBUG(0,("Upgrade of IDMAP_VERSION from %d to %d is not "
355 "possible with incomplete configuration\n",
356 version, IDMAP_VERSION));
357 ret = NT_STATUS_UNSUCCESSFUL;
360 if (dbwrap_transaction_start(db) != 0) {
361 DEBUG(0, ("Unable to start upgrade transaction!\n"));
362 ret = NT_STATUS_INTERNAL_DB_ERROR;
366 if (!idmap_tdb_upgrade(dom, db)) {
367 dbwrap_transaction_cancel(db);
368 DEBUG(0, ("Unable to open idmap database, it's in an old format, and upgrade failed!\n"));
369 ret = NT_STATUS_INTERNAL_DB_ERROR;
373 if (dbwrap_transaction_commit(db) != 0) {
374 DEBUG(0, ("Unable to commit upgrade transaction!\n"));
375 ret = NT_STATUS_INTERNAL_DB_ERROR;
380 ctx->db = talloc_move(ctx, &db);
382 ret = idmap_tdb_init_hwm(dom);
385 talloc_free(mem_ctx);
389 /**********************************************************************
390 IDMAP MAPPING TDB BACKEND
391 **********************************************************************/
393 /*****************************
394 Initialise idmap database.
395 *****************************/
397 static NTSTATUS idmap_tdb_db_init(struct idmap_domain *dom)
400 struct idmap_tdb_common_context *ctx;
402 DEBUG(10, ("idmap_tdb_db_init called for domain '%s'\n", dom->name));
404 ctx = talloc_zero(dom, struct idmap_tdb_common_context);
406 DEBUG(0, ("Out of memory!\n"));
407 return NT_STATUS_NO_MEMORY;
410 /* load backend specific configuration here: */
412 if (strequal(dom->name, "*")) {
417 ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
418 if (ctx->rw_ops == NULL) {
419 DEBUG(0, ("Out of memory!\n"));
420 ret = NT_STATUS_NO_MEMORY;
424 ctx->max_id = dom->high_id;
425 ctx->hwmkey_uid = HWM_USER;
426 ctx->hwmkey_gid = HWM_GROUP;
428 ctx->rw_ops->get_new_id = idmap_tdb_common_get_new_id;
429 ctx->rw_ops->set_mapping = idmap_tdb_common_set_mapping;
431 dom->private_data = ctx;
433 ret = idmap_tdb_open_db(dom);
434 if ( ! NT_STATUS_IS_OK(ret)) {
445 static struct idmap_methods db_methods = {
446 .init = idmap_tdb_db_init,
447 .unixids_to_sids = idmap_tdb_common_unixids_to_sids,
448 .sids_to_unixids = idmap_tdb_common_sids_to_unixids,
449 .allocate_id = idmap_tdb_common_get_new_id,
452 NTSTATUS idmap_tdb_init(void)
454 DEBUG(10, ("calling idmap_tdb_init\n"));
456 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_methods);