2 Unix SMB/CIFS mplementation.
5 Copyright (C) Stefan Metzmacher <metze@samba.org> 2006-2007
6 Copyright (C) Andrew Bartlett <abartlet@samba.org> 2006-2008
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
24 #include "dsdb/samdb/samdb.h"
25 #include "lib/ldb/include/ldb_errors.h"
26 #include "lib/ldb/include/ldb_private.h"
27 #include "lib/util/dlinklist.h"
28 #include "param/param.h"
31 static int dsdb_schema_set_attributes(struct ldb_context *ldb, struct dsdb_schema *schema, bool write_attributes)
33 int ret = LDB_SUCCESS;
34 struct ldb_result *res;
35 struct ldb_result *res_idx;
36 struct dsdb_attribute *attr;
37 struct ldb_message *mod_msg;
38 TALLOC_CTX *mem_ctx = talloc_new(ldb);
40 struct ldb_message *msg;
41 struct ldb_message *msg_idx;
44 return LDB_ERR_OPERATIONS_ERROR;
47 msg = ldb_msg_new(mem_ctx);
50 return LDB_ERR_OPERATIONS_ERROR;
52 msg_idx = ldb_msg_new(mem_ctx);
55 return LDB_ERR_OPERATIONS_ERROR;
57 msg->dn = ldb_dn_new(msg, ldb, "@ATTRIBUTES");
60 return LDB_ERR_OPERATIONS_ERROR;
62 msg_idx->dn = ldb_dn_new(msg, ldb, "@INDEXLIST");
65 return LDB_ERR_OPERATIONS_ERROR;
68 for (attr = schema->attributes; attr; attr = attr->next) {
69 const struct ldb_schema_syntax *s;
70 const char *syntax = attr->syntax->ldb_syntax;
72 syntax = attr->syntax->ldap_oid;
75 /* Write out a rough approximation of the schema as an @ATTRIBUTES value, for bootstrapping */
76 if (strcmp(syntax, LDB_SYNTAX_INTEGER) == 0) {
77 ret = ldb_msg_add_string(msg, attr->lDAPDisplayName, "INTEGER");
78 } else if (strcmp(syntax, LDB_SYNTAX_DIRECTORY_STRING) == 0) {
79 ret = ldb_msg_add_string(msg, attr->lDAPDisplayName, "CASE_INSENSITIVE");
81 if (ret != LDB_SUCCESS) {
85 if (attr->searchFlags & SEARCH_FLAG_ATTINDEX) {
86 ret = ldb_msg_add_string(msg_idx, "@IDXATTR", attr->lDAPDisplayName);
87 if (ret != LDB_SUCCESS) {
96 ret = ldb_schema_attribute_add(ldb, attr->lDAPDisplayName, LDB_ATTR_FLAG_FIXED,
98 if (ret != LDB_SUCCESS) {
99 s = ldb_samba_syntax_by_name(ldb, attr->syntax->ldap_oid);
101 ret = ldb_schema_attribute_add_with_syntax(ldb, attr->lDAPDisplayName, LDB_ATTR_FLAG_FIXED, s);
103 ret = LDB_SUCCESS; /* Nothing to do here */
107 if (ret != LDB_SUCCESS) {
112 if (!write_attributes) {
113 talloc_free(mem_ctx);
118 ret = ldb_transaction_start(ldb);
119 if (ret != LDB_SUCCESS) {
123 /* Try to avoid churning the attributes too much - we only want to do this if they have changed */
124 ret = ldb_search_exp_fmt(ldb, mem_ctx, &res, msg->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg->dn));
125 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
126 ret = ldb_add(ldb, msg);
127 } else if (ret != LDB_SUCCESS) {
128 talloc_free(mem_ctx);
129 ldb_transaction_cancel(ldb);
133 if (res->count != 1) {
134 talloc_free(mem_ctx);
135 ldb_transaction_cancel(ldb);
136 return LDB_ERR_NO_SUCH_OBJECT;
140 /* Annoyingly added to our search results */
141 ldb_msg_remove_attr(res->msgs[0], "distinguishedName");
143 mod_msg = ldb_msg_diff(ldb, res->msgs[0], msg);
144 if (mod_msg->num_elements > 0) {
145 ret = ldb_modify(ldb, mod_msg);
149 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
150 /* We might be on a read-only DB */
151 talloc_free(mem_ctx);
152 ret = ldb_transaction_cancel(ldb);
154 } else if (ret != LDB_SUCCESS) {
155 ldb_transaction_cancel(ldb);
159 /* Now write out the indexs, as found in the schema (if they have changed) */
161 ret = ldb_search_exp_fmt(ldb, mem_ctx, &res_idx, msg_idx->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg_idx->dn));
162 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
163 ret = ldb_add(ldb, msg_idx);
164 } else if (ret != LDB_SUCCESS) {
165 talloc_free(mem_ctx);
166 ldb_transaction_cancel(ldb);
169 if (res_idx->count != 1) {
170 talloc_free(mem_ctx);
171 ldb_transaction_cancel(ldb);
172 return LDB_ERR_NO_SUCH_OBJECT;
175 /* Annoyingly added to our search results */
176 ldb_msg_remove_attr(res_idx->msgs[0], "distinguishedName");
178 mod_msg = ldb_msg_diff(ldb, res_idx->msgs[0], msg_idx);
179 if (mod_msg->num_elements > 0) {
180 ret = ldb_modify(ldb, mod_msg);
183 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
184 /* We might be on a read-only DB */
185 talloc_free(mem_ctx);
186 return ldb_transaction_cancel(ldb);
187 } else if (ret == LDB_SUCCESS) {
188 ret = ldb_transaction_commit(ldb);
190 ldb_transaction_cancel(ldb);
192 talloc_free(mem_ctx);
198 * Attach the schema to an opaque pointer on the ldb, so ldb modules
202 int dsdb_set_schema(struct ldb_context *ldb, struct dsdb_schema *schema)
206 ret = ldb_set_opaque(ldb, "dsdb_schema", schema);
207 if (ret != LDB_SUCCESS) {
211 /* Set the new attributes based on the new schema */
212 ret = dsdb_schema_set_attributes(ldb, schema, true);
213 if (ret != LDB_SUCCESS) {
217 talloc_steal(ldb, schema);
223 * Global variable to hold one copy of the schema, used to avoid memory bloat
225 static struct dsdb_schema *global_schema;
228 * Make this ldb use the 'global' schema, setup to avoid having multiple copies in this process
230 int dsdb_set_global_schema(struct ldb_context *ldb)
233 if (!global_schema) {
236 ret = ldb_set_opaque(ldb, "dsdb_schema", global_schema);
237 if (ret != LDB_SUCCESS) {
241 /* Set the new attributes based on the new schema */
242 ret = dsdb_schema_set_attributes(ldb, global_schema, false);
243 if (ret != LDB_SUCCESS) {
247 /* Keep a reference to this schema, just incase the global copy is replaced */
248 if (talloc_reference(ldb, global_schema) == NULL) {
249 return LDB_ERR_OPERATIONS_ERROR;
256 * Find the schema object for this ldb
259 struct dsdb_schema *dsdb_get_schema(struct ldb_context *ldb)
262 struct dsdb_schema *schema;
264 /* see if we have a cached copy */
265 p = ldb_get_opaque(ldb, "dsdb_schema");
270 schema = talloc_get_type(p, struct dsdb_schema);
279 * Make the schema found on this ldb the 'global' schema
282 void dsdb_make_schema_global(struct ldb_context *ldb)
284 struct dsdb_schema *schema = dsdb_get_schema(ldb);
290 talloc_unlink(talloc_autofree_context(), schema);
293 talloc_steal(talloc_autofree_context(), schema);
294 global_schema = schema;
296 dsdb_set_global_schema(ldb);
301 * Rather than read a schema from the LDB itself, read it from an ldif
302 * file. This allows schema to be loaded and used while adding the
303 * schema itself to the directory.
306 WERROR dsdb_attach_schema_from_ldif_file(struct ldb_context *ldb, const char *pf, const char *df)
308 struct ldb_ldif *ldif;
309 struct ldb_message *msg;
313 struct dsdb_schema *schema;
314 const struct ldb_val *prefix_val;
315 const struct ldb_val *info_val;
316 struct ldb_val info_val_default;
318 mem_ctx = talloc_new(ldb);
323 schema = dsdb_new_schema(mem_ctx, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")));
325 schema->fsmo.we_are_master = true;
326 schema->fsmo.master_dn = ldb_dn_new_fmt(schema, ldb, "@PROVISION_SCHEMA_MASTER");
327 if (!schema->fsmo.master_dn) {
332 * load the prefixMap attribute from pf
334 ldif = ldb_ldif_read_string(ldb, &pf);
336 status = WERR_INVALID_PARAM;
339 talloc_steal(mem_ctx, ldif);
341 msg = ldb_msg_canonicalize(ldb, ldif->msg);
345 talloc_steal(mem_ctx, msg);
348 prefix_val = ldb_msg_find_ldb_val(msg, "prefixMap");
350 status = WERR_INVALID_PARAM;
354 info_val = ldb_msg_find_ldb_val(msg, "schemaInfo");
356 info_val_default = strhex_to_data_blob("FF0000000000000000000000000000000000000000");
357 if (!info_val_default.data) {
360 talloc_steal(mem_ctx, info_val_default.data);
361 info_val = &info_val_default;
364 status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
365 if (!W_ERROR_IS_OK(status)) {
370 * load the attribute and class definitions outof df
372 while ((ldif = ldb_ldif_read_string(ldb, &df))) {
376 talloc_steal(mem_ctx, ldif);
378 msg = ldb_msg_canonicalize(ldb, ldif->msg);
383 talloc_steal(mem_ctx, msg);
386 is_sa = ldb_msg_check_string_attribute(msg, "objectClass", "attributeSchema");
387 is_sc = ldb_msg_check_string_attribute(msg, "objectClass", "classSchema");
390 struct dsdb_attribute *sa;
392 sa = talloc_zero(schema, struct dsdb_attribute);
397 status = dsdb_attribute_from_ldb(schema, msg, sa, sa);
398 if (!W_ERROR_IS_OK(status)) {
402 DLIST_ADD_END(schema->attributes, sa, struct dsdb_attribute *);
404 struct dsdb_class *sc;
406 sc = talloc_zero(schema, struct dsdb_class);
411 status = dsdb_class_from_ldb(schema, msg, sc, sc);
412 if (!W_ERROR_IS_OK(status)) {
416 DLIST_ADD_END(schema->classes, sc, struct dsdb_class *);
420 ret = dsdb_set_schema(ldb, schema);
421 if (ret != LDB_SUCCESS) {
422 status = WERR_FOOBAR;
432 talloc_free(mem_ctx);