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_module.h"
26 #include "param/param.h"
29 static int dsdb_schema_set_attributes(struct ldb_context *ldb, struct dsdb_schema *schema, bool write_attributes)
31 int ret = LDB_SUCCESS;
32 struct ldb_result *res;
33 struct ldb_result *res_idx;
34 struct dsdb_attribute *attr;
35 struct ldb_message *mod_msg;
36 TALLOC_CTX *mem_ctx = talloc_new(ldb);
38 struct ldb_message *msg;
39 struct ldb_message *msg_idx;
42 return LDB_ERR_OPERATIONS_ERROR;
45 msg = ldb_msg_new(mem_ctx);
48 return LDB_ERR_OPERATIONS_ERROR;
50 msg_idx = ldb_msg_new(mem_ctx);
53 return LDB_ERR_OPERATIONS_ERROR;
55 msg->dn = ldb_dn_new(msg, ldb, "@ATTRIBUTES");
58 return LDB_ERR_OPERATIONS_ERROR;
60 msg_idx->dn = ldb_dn_new(msg, ldb, "@INDEXLIST");
63 return LDB_ERR_OPERATIONS_ERROR;
66 for (attr = schema->attributes; attr; attr = attr->next) {
67 const struct ldb_schema_syntax *s;
68 const char *syntax = attr->syntax->ldb_syntax;
70 syntax = attr->syntax->ldap_oid;
73 /* Write out a rough approximation of the schema as an @ATTRIBUTES value, for bootstrapping */
74 if (strcmp(syntax, LDB_SYNTAX_INTEGER) == 0) {
75 ret = ldb_msg_add_string(msg, attr->lDAPDisplayName, "INTEGER");
76 } else if (strcmp(syntax, LDB_SYNTAX_DIRECTORY_STRING) == 0) {
77 ret = ldb_msg_add_string(msg, attr->lDAPDisplayName, "CASE_INSENSITIVE");
79 if (ret != LDB_SUCCESS) {
83 if (attr->searchFlags & SEARCH_FLAG_ATTINDEX) {
84 ret = ldb_msg_add_string(msg_idx, "@IDXATTR", attr->lDAPDisplayName);
85 if (ret != LDB_SUCCESS) {
94 ret = ldb_schema_attribute_add(ldb, attr->lDAPDisplayName, LDB_ATTR_FLAG_FIXED,
96 if (ret != LDB_SUCCESS) {
97 s = ldb_samba_syntax_by_name(ldb, attr->syntax->ldap_oid);
99 ret = ldb_schema_attribute_add_with_syntax(ldb, attr->lDAPDisplayName, LDB_ATTR_FLAG_FIXED, s);
101 ret = LDB_SUCCESS; /* Nothing to do here */
105 if (ret != LDB_SUCCESS) {
110 if (!write_attributes || ret != LDB_SUCCESS) {
111 talloc_free(mem_ctx);
116 /* Try to avoid churning the attributes too much - we only want to do this if they have changed */
117 ret = ldb_search(ldb, mem_ctx, &res, msg->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg->dn));
118 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
119 ret = ldb_add(ldb, msg);
120 } else if (ret != LDB_SUCCESS) {
121 } else if (res->count != 1) {
122 ret = ldb_add(ldb, msg);
125 /* Annoyingly added to our search results */
126 ldb_msg_remove_attr(res->msgs[0], "distinguishedName");
128 mod_msg = ldb_msg_diff(ldb, res->msgs[0], msg);
129 if (mod_msg->num_elements > 0) {
130 ret = ldb_modify(ldb, mod_msg);
134 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
135 /* We might be on a read-only DB */
138 if (ret != LDB_SUCCESS) {
139 talloc_free(mem_ctx);
143 /* Now write out the indexs, as found in the schema (if they have changed) */
145 ret = ldb_search(ldb, mem_ctx, &res_idx, msg_idx->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg_idx->dn));
146 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
147 ret = ldb_add(ldb, msg_idx);
148 } else if (ret != LDB_SUCCESS) {
149 } else if (res->count != 1) {
150 ret = ldb_add(ldb, msg_idx);
153 /* Annoyingly added to our search results */
154 ldb_msg_remove_attr(res_idx->msgs[0], "distinguishedName");
156 mod_msg = ldb_msg_diff(ldb, res_idx->msgs[0], msg_idx);
157 if (mod_msg->num_elements > 0) {
158 ret = ldb_modify(ldb, mod_msg);
161 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
162 /* We might be on a read-only DB */
165 talloc_free(mem_ctx);
171 * Attach the schema to an opaque pointer on the ldb, so ldb modules
175 int dsdb_set_schema(struct ldb_context *ldb, struct dsdb_schema *schema)
179 ret = ldb_set_opaque(ldb, "dsdb_schema", schema);
180 if (ret != LDB_SUCCESS) {
184 /* Set the new attributes based on the new schema */
185 ret = dsdb_schema_set_attributes(ldb, schema, true);
186 if (ret != LDB_SUCCESS) {
190 talloc_steal(ldb, schema);
196 * Global variable to hold one copy of the schema, used to avoid memory bloat
198 static struct dsdb_schema *global_schema;
201 * Make this ldb use the 'global' schema, setup to avoid having multiple copies in this process
203 int dsdb_set_global_schema(struct ldb_context *ldb)
206 if (!global_schema) {
209 ret = ldb_set_opaque(ldb, "dsdb_schema", global_schema);
210 if (ret != LDB_SUCCESS) {
214 /* Set the new attributes based on the new schema */
215 ret = dsdb_schema_set_attributes(ldb, global_schema, false);
216 if (ret != LDB_SUCCESS) {
220 /* Keep a reference to this schema, just incase the global copy is replaced */
221 if (talloc_reference(ldb, global_schema) == NULL) {
222 return LDB_ERR_OPERATIONS_ERROR;
229 * Find the schema object for this ldb
232 struct dsdb_schema *dsdb_get_schema(struct ldb_context *ldb)
235 struct dsdb_schema *schema;
237 /* see if we have a cached copy */
238 p = ldb_get_opaque(ldb, "dsdb_schema");
243 schema = talloc_get_type(p, struct dsdb_schema);
252 * Make the schema found on this ldb the 'global' schema
255 void dsdb_make_schema_global(struct ldb_context *ldb)
257 struct dsdb_schema *schema = dsdb_get_schema(ldb);
263 talloc_unlink(talloc_autofree_context(), schema);
266 talloc_steal(talloc_autofree_context(), schema);
267 global_schema = schema;
269 dsdb_set_global_schema(ldb);
274 * Rather than read a schema from the LDB itself, read it from an ldif
275 * file. This allows schema to be loaded and used while adding the
276 * schema itself to the directory.
279 WERROR dsdb_attach_schema_from_ldif_file(struct ldb_context *ldb, const char *pf, const char *df)
281 struct ldb_ldif *ldif;
282 struct ldb_message *msg;
286 struct dsdb_schema *schema;
287 const struct ldb_val *prefix_val;
288 const struct ldb_val *info_val;
289 struct ldb_val info_val_default;
291 mem_ctx = talloc_new(ldb);
296 schema = dsdb_new_schema(mem_ctx, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")));
298 schema->fsmo.we_are_master = true;
299 schema->fsmo.master_dn = ldb_dn_new_fmt(schema, ldb, "@PROVISION_SCHEMA_MASTER");
300 if (!schema->fsmo.master_dn) {
305 * load the prefixMap attribute from pf
307 ldif = ldb_ldif_read_string(ldb, &pf);
309 status = WERR_INVALID_PARAM;
312 talloc_steal(mem_ctx, ldif);
314 msg = ldb_msg_canonicalize(ldb, ldif->msg);
318 talloc_steal(mem_ctx, msg);
321 prefix_val = ldb_msg_find_ldb_val(msg, "prefixMap");
323 status = WERR_INVALID_PARAM;
327 info_val = ldb_msg_find_ldb_val(msg, "schemaInfo");
329 info_val_default = strhex_to_data_blob(mem_ctx, "FF0000000000000000000000000000000000000000");
330 if (!info_val_default.data) {
333 info_val = &info_val_default;
336 status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
337 if (!W_ERROR_IS_OK(status)) {
342 * load the attribute and class definitions outof df
344 while ((ldif = ldb_ldif_read_string(ldb, &df))) {
348 talloc_steal(mem_ctx, ldif);
350 msg = ldb_msg_canonicalize(ldb, ldif->msg);
355 talloc_steal(mem_ctx, msg);
358 is_sa = ldb_msg_check_string_attribute(msg, "objectClass", "attributeSchema");
359 is_sc = ldb_msg_check_string_attribute(msg, "objectClass", "classSchema");
362 struct dsdb_attribute *sa;
364 sa = talloc_zero(schema, struct dsdb_attribute);
369 status = dsdb_attribute_from_ldb(schema, msg, sa, sa);
370 if (!W_ERROR_IS_OK(status)) {
374 DLIST_ADD_END(schema->attributes, sa, struct dsdb_attribute *);
376 struct dsdb_class *sc;
378 sc = talloc_zero(schema, struct dsdb_class);
383 status = dsdb_class_from_ldb(schema, msg, sc, sc);
384 if (!W_ERROR_IS_OK(status)) {
388 DLIST_ADD_END(schema->classes, sc, struct dsdb_class *);
392 ret = dsdb_set_schema(ldb, schema);
393 if (ret != LDB_SUCCESS) {
394 status = WERR_FOOBAR;
404 talloc_free(mem_ctx);