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;
154 /* If we are bigendian, tdb is bigendian if NOT converted. */
157 unsigned char small[2];
160 if (u.small[0] == 0x01)
161 bigendianheader = !(dbwrap_get_flags(db) & TDB_CONVERT);
163 assert(u.small[0] == 0x02);
164 bigendianheader = (dbwrap_get_flags(db) & TDB_CONVERT);
167 bigendianheader = (dbwrap_get_flags(db) & TDB_BIGENDIAN) ? True : False;
169 DEBUG(0, ("Upgrading winbindd_idmap.tdb from an old version\n"));
171 status = dbwrap_fetch_int32_bystring(db, "IDMAP_VERSION", &vers);
172 if (!NT_STATUS_IS_OK(status)) {
176 if (((vers == -1) && bigendianheader) || (IREV(vers) == IDMAP_VERSION)) {
177 /* Arrggghh ! Bytereversed or old big-endian - make order independent ! */
179 * high and low records were created on a
180 * big endian machine and will need byte-reversing.
185 status = dbwrap_fetch_int32_bystring(db, HWM_USER, &wm);
186 if (!NT_STATUS_IS_OK(status)) {
196 status = dbwrap_store_int32_bystring(db, HWM_USER, wm);
197 if (!NT_STATUS_IS_OK(status)) {
198 DEBUG(0, ("Unable to byteswap user hwm in idmap "
199 "database: %s\n", nt_errstr(status)));
203 status = dbwrap_fetch_int32_bystring(db, HWM_GROUP, &wm);
204 if (!NT_STATUS_IS_OK(status)) {
214 status = dbwrap_store_int32_bystring(db, HWM_GROUP, wm);
215 if (!NT_STATUS_IS_OK(status)) {
216 DEBUG(0, ("Unable to byteswap group hwm in idmap "
217 "database: %s\n", nt_errstr(status)));
225 /* the old format stored as DOMAIN/rid - now we store the SID direct */
226 status = dbwrap_traverse(db, convert_fn, &s, NULL);
228 if (!NT_STATUS_IS_OK(status)) {
229 DEBUG(0, ("Database traverse failed during conversion\n"));
234 DEBUG(0, ("Problem during conversion\n"));
238 status = dbwrap_store_int32_bystring(db, "IDMAP_VERSION",
240 if (!NT_STATUS_IS_OK(status)) {
241 DEBUG(0, ("Unable to store idmap version in database: %s\n",
249 static NTSTATUS idmap_tdb_init_hwm(struct idmap_domain *dom)
253 bool update_uid = false;
254 bool update_gid = false;
255 struct idmap_tdb_common_context *ctx;
258 ctx = talloc_get_type(dom->private_data,
259 struct idmap_tdb_common_context);
261 status = dbwrap_fetch_uint32(ctx->db, HWM_USER, &low_uid);
262 if (!NT_STATUS_IS_OK(status) || low_uid < dom->low_id) {
266 status = dbwrap_fetch_uint32(ctx->db, HWM_GROUP, &low_gid);
267 if (!NT_STATUS_IS_OK(status) || low_gid < dom->low_id) {
271 if (!update_uid && !update_gid) {
275 if (dbwrap_transaction_start(ctx->db) != 0) {
276 DEBUG(0, ("Unable to start upgrade transaction!\n"));
277 return NT_STATUS_INTERNAL_DB_ERROR;
281 status = dbwrap_store_uint32(ctx->db, HWM_USER, dom->low_id);
282 if (!NT_STATUS_IS_OK(status)) {
283 dbwrap_transaction_cancel(ctx->db);
284 DEBUG(0, ("Unable to initialise user hwm in idmap "
285 "database: %s\n", nt_errstr(status)));
286 return NT_STATUS_INTERNAL_DB_ERROR;
291 status = dbwrap_store_uint32(ctx->db, HWM_GROUP, dom->low_id);
292 if (!NT_STATUS_IS_OK(status)) {
293 dbwrap_transaction_cancel(ctx->db);
294 DEBUG(0, ("Unable to initialise group hwm in idmap "
295 "database: %s\n", nt_errstr(status)));
296 return NT_STATUS_INTERNAL_DB_ERROR;
300 if (dbwrap_transaction_commit(ctx->db) != 0) {
301 DEBUG(0, ("Unable to commit upgrade transaction!\n"));
302 return NT_STATUS_INTERNAL_DB_ERROR;
308 static NTSTATUS idmap_tdb_open_db(struct idmap_domain *dom)
312 char *tdbfile = NULL;
313 struct db_context *db = NULL;
315 bool config_error = false;
316 struct idmap_tdb_common_context *ctx;
318 ctx = talloc_get_type(dom->private_data,
319 struct idmap_tdb_common_context);
322 /* it is already open */
326 /* use our own context here */
327 mem_ctx = talloc_stackframe();
329 /* use the old database if present */
330 tdbfile = state_path("winbindd_idmap.tdb");
332 DEBUG(0, ("Out of memory!\n"));
333 ret = NT_STATUS_NO_MEMORY;
337 DEBUG(10,("Opening tdbfile %s\n", tdbfile ));
339 /* Open idmap repository */
340 db = db_open(mem_ctx, tdbfile, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0644,
341 DBWRAP_LOCK_ORDER_1);
343 DEBUG(0, ("Unable to open idmap database\n"));
344 ret = NT_STATUS_UNSUCCESSFUL;
348 /* check against earlier versions */
349 ret = dbwrap_fetch_int32_bystring(db, "IDMAP_VERSION", &version);
350 if (!NT_STATUS_IS_OK(ret)) {
354 if (version != IDMAP_VERSION) {
356 DEBUG(0,("Upgrade of IDMAP_VERSION from %d to %d is not "
357 "possible with incomplete configuration\n",
358 version, IDMAP_VERSION));
359 ret = NT_STATUS_UNSUCCESSFUL;
362 if (dbwrap_transaction_start(db) != 0) {
363 DEBUG(0, ("Unable to start upgrade transaction!\n"));
364 ret = NT_STATUS_INTERNAL_DB_ERROR;
368 if (!idmap_tdb_upgrade(dom, db)) {
369 dbwrap_transaction_cancel(db);
370 DEBUG(0, ("Unable to open idmap database, it's in an old format, and upgrade failed!\n"));
371 ret = NT_STATUS_INTERNAL_DB_ERROR;
375 if (dbwrap_transaction_commit(db) != 0) {
376 DEBUG(0, ("Unable to commit upgrade transaction!\n"));
377 ret = NT_STATUS_INTERNAL_DB_ERROR;
382 ctx->db = talloc_move(ctx, &db);
384 ret = idmap_tdb_init_hwm(dom);
387 talloc_free(mem_ctx);
391 /**********************************************************************
392 IDMAP MAPPING TDB BACKEND
393 **********************************************************************/
395 /*****************************
396 Initialise idmap database.
397 *****************************/
399 static NTSTATUS idmap_tdb_db_init(struct idmap_domain *dom)
402 struct idmap_tdb_common_context *ctx;
404 DEBUG(10, ("idmap_tdb_db_init called for domain '%s'\n", dom->name));
406 ctx = talloc_zero(dom, struct idmap_tdb_common_context);
408 DEBUG(0, ("Out of memory!\n"));
409 return NT_STATUS_NO_MEMORY;
412 /* load backend specific configuration here: */
414 if (strequal(dom->name, "*")) {
419 ctx->rw_ops = talloc_zero(ctx, struct idmap_rw_ops);
420 if (ctx->rw_ops == NULL) {
421 DEBUG(0, ("Out of memory!\n"));
422 ret = NT_STATUS_NO_MEMORY;
426 ctx->max_id = dom->high_id;
427 ctx->hwmkey_uid = HWM_USER;
428 ctx->hwmkey_gid = HWM_GROUP;
430 ctx->rw_ops->get_new_id = idmap_tdb_common_get_new_id;
431 ctx->rw_ops->set_mapping = idmap_tdb_common_set_mapping;
433 dom->private_data = ctx;
435 ret = idmap_tdb_open_db(dom);
436 if ( ! NT_STATUS_IS_OK(ret)) {
447 static struct idmap_methods db_methods = {
448 .init = idmap_tdb_db_init,
449 .unixids_to_sids = idmap_tdb_common_unixids_to_sids,
450 .sids_to_unixids = idmap_tdb_common_sids_to_unixids,
451 .allocate_id = idmap_tdb_common_get_new_id,
454 NTSTATUS idmap_tdb_init(void)
456 DEBUG(10, ("calling idmap_tdb_init\n"));
458 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "tdb", &db_methods);