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 || ret != LDB_SUCCESS) {
113 talloc_free(mem_ctx);
118 /* Try to avoid churning the attributes too much - we only want to do this if they have changed */
119 ret = ldb_search(ldb, mem_ctx, &res, msg->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg->dn));
120 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
121 ret = ldb_add(ldb, msg);
122 } else if (ret != LDB_SUCCESS) {
123 } else if (res->count != 1) {
124 ret = ldb_add(ldb, msg);
127 /* Annoyingly added to our search results */
128 ldb_msg_remove_attr(res->msgs[0], "distinguishedName");
130 mod_msg = ldb_msg_diff(ldb, res->msgs[0], msg);
131 if (mod_msg->num_elements > 0) {
132 ret = ldb_modify(ldb, mod_msg);
136 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
137 /* We might be on a read-only DB */
140 if (ret != LDB_SUCCESS) {
141 talloc_free(mem_ctx);
145 /* Now write out the indexs, as found in the schema (if they have changed) */
147 ret = ldb_search(ldb, mem_ctx, &res_idx, msg_idx->dn, LDB_SCOPE_BASE, NULL, "dn=%s", ldb_dn_get_linearized(msg_idx->dn));
148 if (ret == LDB_ERR_NO_SUCH_OBJECT) {
149 ret = ldb_add(ldb, msg_idx);
150 } else if (ret != LDB_SUCCESS) {
151 } else if (res->count != 1) {
152 ret = ldb_add(ldb, msg_idx);
155 /* Annoyingly added to our search results */
156 ldb_msg_remove_attr(res_idx->msgs[0], "distinguishedName");
158 mod_msg = ldb_msg_diff(ldb, res_idx->msgs[0], msg_idx);
159 if (mod_msg->num_elements > 0) {
160 ret = ldb_modify(ldb, mod_msg);
163 if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
164 /* We might be on a read-only DB */
167 talloc_free(mem_ctx);
173 * Attach the schema to an opaque pointer on the ldb, so ldb modules
177 int dsdb_set_schema(struct ldb_context *ldb, struct dsdb_schema *schema)
181 ret = ldb_set_opaque(ldb, "dsdb_schema", schema);
182 if (ret != LDB_SUCCESS) {
186 /* Set the new attributes based on the new schema */
187 ret = dsdb_schema_set_attributes(ldb, schema, true);
188 if (ret != LDB_SUCCESS) {
192 talloc_steal(ldb, schema);
198 * Global variable to hold one copy of the schema, used to avoid memory bloat
200 static struct dsdb_schema *global_schema;
203 * Make this ldb use the 'global' schema, setup to avoid having multiple copies in this process
205 int dsdb_set_global_schema(struct ldb_context *ldb)
208 if (!global_schema) {
211 ret = ldb_set_opaque(ldb, "dsdb_schema", global_schema);
212 if (ret != LDB_SUCCESS) {
216 /* Set the new attributes based on the new schema */
217 ret = dsdb_schema_set_attributes(ldb, global_schema, false);
218 if (ret != LDB_SUCCESS) {
222 /* Keep a reference to this schema, just incase the global copy is replaced */
223 if (talloc_reference(ldb, global_schema) == NULL) {
224 return LDB_ERR_OPERATIONS_ERROR;
231 * Find the schema object for this ldb
234 struct dsdb_schema *dsdb_get_schema(struct ldb_context *ldb)
237 struct dsdb_schema *schema;
239 /* see if we have a cached copy */
240 p = ldb_get_opaque(ldb, "dsdb_schema");
245 schema = talloc_get_type(p, struct dsdb_schema);
254 * Make the schema found on this ldb the 'global' schema
257 void dsdb_make_schema_global(struct ldb_context *ldb)
259 struct dsdb_schema *schema = dsdb_get_schema(ldb);
265 talloc_unlink(talloc_autofree_context(), schema);
268 talloc_steal(talloc_autofree_context(), schema);
269 global_schema = schema;
271 dsdb_set_global_schema(ldb);
276 * Rather than read a schema from the LDB itself, read it from an ldif
277 * file. This allows schema to be loaded and used while adding the
278 * schema itself to the directory.
281 WERROR dsdb_attach_schema_from_ldif_file(struct ldb_context *ldb, const char *pf, const char *df)
283 struct ldb_ldif *ldif;
284 struct ldb_message *msg;
288 struct dsdb_schema *schema;
289 const struct ldb_val *prefix_val;
290 const struct ldb_val *info_val;
291 struct ldb_val info_val_default;
293 mem_ctx = talloc_new(ldb);
298 schema = dsdb_new_schema(mem_ctx, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")));
300 schema->fsmo.we_are_master = true;
301 schema->fsmo.master_dn = ldb_dn_new_fmt(schema, ldb, "@PROVISION_SCHEMA_MASTER");
302 if (!schema->fsmo.master_dn) {
307 * load the prefixMap attribute from pf
309 ldif = ldb_ldif_read_string(ldb, &pf);
311 status = WERR_INVALID_PARAM;
314 talloc_steal(mem_ctx, ldif);
316 msg = ldb_msg_canonicalize(ldb, ldif->msg);
320 talloc_steal(mem_ctx, msg);
323 prefix_val = ldb_msg_find_ldb_val(msg, "prefixMap");
325 status = WERR_INVALID_PARAM;
329 info_val = ldb_msg_find_ldb_val(msg, "schemaInfo");
331 info_val_default = strhex_to_data_blob(mem_ctx, "FF0000000000000000000000000000000000000000");
332 if (!info_val_default.data) {
335 info_val = &info_val_default;
338 status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
339 if (!W_ERROR_IS_OK(status)) {
344 * load the attribute and class definitions outof df
346 while ((ldif = ldb_ldif_read_string(ldb, &df))) {
350 talloc_steal(mem_ctx, ldif);
352 msg = ldb_msg_canonicalize(ldb, ldif->msg);
357 talloc_steal(mem_ctx, msg);
360 is_sa = ldb_msg_check_string_attribute(msg, "objectClass", "attributeSchema");
361 is_sc = ldb_msg_check_string_attribute(msg, "objectClass", "classSchema");
364 struct dsdb_attribute *sa;
366 sa = talloc_zero(schema, struct dsdb_attribute);
371 status = dsdb_attribute_from_ldb(schema, msg, sa, sa);
372 if (!W_ERROR_IS_OK(status)) {
376 DLIST_ADD_END(schema->attributes, sa, struct dsdb_attribute *);
378 struct dsdb_class *sc;
380 sc = talloc_zero(schema, struct dsdb_class);
385 status = dsdb_class_from_ldb(schema, msg, sc, sc);
386 if (!W_ERROR_IS_OK(status)) {
390 DLIST_ADD_END(schema->classes, sc, struct dsdb_class *);
394 ret = dsdb_set_schema(ldb, schema);
395 if (ret != LDB_SUCCESS) {
396 status = WERR_FOOBAR;
406 talloc_free(mem_ctx);