2 ldb database library - ldif handlers for Samba
4 Copyright (C) Andrew Tridgell 2005
5 Copyright (C) Andrew Bartlett 2006
6 ** NOTE! The following LGPL license applies to the ldb
7 ** library. This does NOT imply that all of Samba is released
10 This library is free software; you can redistribute it and/or
11 modify it under the terms of the GNU Lesser General Public
12 License as published by the Free Software Foundation; either
13 version 2 of the License, or (at your option) any later version.
15 This library is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 Lesser General Public License for more details.
20 You should have received a copy of the GNU Lesser General Public
21 License along with this library; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26 #include "ldb/include/includes.h"
28 #include "librpc/gen_ndr/ndr_security.h"
29 #include "librpc/gen_ndr/ndr_misc.h"
30 #include "dsdb/samdb/samdb.h"
31 #include "libcli/security/security.h"
34 convert a ldif formatted objectSid to a NDR formatted blob
36 static int ldif_read_objectSid(struct ldb_context *ldb, void *mem_ctx,
37 const struct ldb_val *in, struct ldb_val *out)
41 sid = dom_sid_parse_talloc(mem_ctx, (const char *)in->data);
45 status = ndr_push_struct_blob(out, mem_ctx, sid,
46 (ndr_push_flags_fn_t)ndr_push_dom_sid);
48 if (!NT_STATUS_IS_OK(status)) {
55 convert a NDR formatted blob to a ldif formatted objectSid
57 static int ldif_write_objectSid(struct ldb_context *ldb, void *mem_ctx,
58 const struct ldb_val *in, struct ldb_val *out)
62 sid = talloc(mem_ctx, struct dom_sid);
66 status = ndr_pull_struct_blob(in, sid, sid,
67 (ndr_pull_flags_fn_t)ndr_pull_dom_sid);
68 if (!NT_STATUS_IS_OK(status)) {
72 out->data = (uint8_t *)dom_sid_string(mem_ctx, sid);
74 if (out->data == NULL) {
77 out->length = strlen((const char *)out->data);
81 static BOOL ldb_comparision_objectSid_isString(const struct ldb_val *v)
87 if (strncmp("S-", (const char *)v->data, 2) != 0) return False;
93 compare two objectSids
95 static int ldb_comparison_objectSid(struct ldb_context *ldb, void *mem_ctx,
96 const struct ldb_val *v1, const struct ldb_val *v2)
98 if (ldb_comparision_objectSid_isString(v1) && ldb_comparision_objectSid_isString(v2)) {
99 return strcmp((const char *)v1->data, (const char *)v2->data);
100 } else if (ldb_comparision_objectSid_isString(v1)
101 && !ldb_comparision_objectSid_isString(v2)) {
104 if (ldif_read_objectSid(ldb, mem_ctx, v1, &v) != 0) {
107 ret = ldb_comparison_binary(ldb, mem_ctx, &v, v2);
110 } else if (!ldb_comparision_objectSid_isString(v1)
111 && ldb_comparision_objectSid_isString(v2)) {
114 if (ldif_read_objectSid(ldb, mem_ctx, v2, &v) != 0) {
117 ret = ldb_comparison_binary(ldb, mem_ctx, v1, &v);
121 return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
125 canonicalise a objectSid
127 static int ldb_canonicalise_objectSid(struct ldb_context *ldb, void *mem_ctx,
128 const struct ldb_val *in, struct ldb_val *out)
130 if (ldb_comparision_objectSid_isString(in)) {
131 return ldif_read_objectSid(ldb, mem_ctx, in, out);
133 return ldb_handler_copy(ldb, mem_ctx, in, out);
137 convert a ldif formatted objectGUID to a NDR formatted blob
139 static int ldif_read_objectGUID(struct ldb_context *ldb, void *mem_ctx,
140 const struct ldb_val *in, struct ldb_val *out)
145 status = GUID_from_string((const char *)in->data, &guid);
146 if (!NT_STATUS_IS_OK(status)) {
150 status = ndr_push_struct_blob(out, mem_ctx, &guid,
151 (ndr_push_flags_fn_t)ndr_push_GUID);
152 if (!NT_STATUS_IS_OK(status)) {
159 convert a NDR formatted blob to a ldif formatted objectGUID
161 static int ldif_write_objectGUID(struct ldb_context *ldb, void *mem_ctx,
162 const struct ldb_val *in, struct ldb_val *out)
166 status = ndr_pull_struct_blob(in, mem_ctx, &guid,
167 (ndr_pull_flags_fn_t)ndr_pull_GUID);
168 if (!NT_STATUS_IS_OK(status)) {
171 out->data = (uint8_t *)GUID_string(mem_ctx, &guid);
172 if (out->data == NULL) {
175 out->length = strlen((const char *)out->data);
179 static BOOL ldb_comparision_objectGUID_isString(const struct ldb_val *v)
184 if (v->length < 33) return False;
186 /* see if the input if null-terninated (safety check for the below) */
187 if (v->data[v->length] != '\0') return False;
189 status = GUID_from_string((const char *)v->data, &guid);
190 if (!NT_STATUS_IS_OK(status)) {
198 compare two objectGUIDs
200 static int ldb_comparison_objectGUID(struct ldb_context *ldb, void *mem_ctx,
201 const struct ldb_val *v1, const struct ldb_val *v2)
203 if (ldb_comparision_objectGUID_isString(v1) && ldb_comparision_objectGUID_isString(v2)) {
204 return strcmp((const char *)v1->data, (const char *)v2->data);
205 } else if (ldb_comparision_objectGUID_isString(v1)
206 && !ldb_comparision_objectGUID_isString(v2)) {
209 if (ldif_read_objectGUID(ldb, mem_ctx, v1, &v) != 0) {
212 ret = ldb_comparison_binary(ldb, mem_ctx, &v, v2);
215 } else if (!ldb_comparision_objectGUID_isString(v1)
216 && ldb_comparision_objectGUID_isString(v2)) {
219 if (ldif_read_objectGUID(ldb, mem_ctx, v2, &v) != 0) {
222 ret = ldb_comparison_binary(ldb, mem_ctx, v1, &v);
226 return ldb_comparison_binary(ldb, mem_ctx, v1, v2);
230 canonicalise a objectGUID
232 static int ldb_canonicalise_objectGUID(struct ldb_context *ldb, void *mem_ctx,
233 const struct ldb_val *in, struct ldb_val *out)
235 if (ldb_comparision_objectGUID_isString(in)) {
236 return ldif_read_objectGUID(ldb, mem_ctx, in, out);
238 return ldb_handler_copy(ldb, mem_ctx, in, out);
243 convert a ldif (SDDL) formatted ntSecurityDescriptor to a NDR formatted blob
245 static int ldif_read_ntSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
246 const struct ldb_val *in, struct ldb_val *out)
248 struct security_descriptor *sd;
251 sd = sddl_decode(mem_ctx, (const char *)in->data, NULL);
255 status = ndr_push_struct_blob(out, mem_ctx, sd,
256 (ndr_push_flags_fn_t)ndr_push_security_descriptor);
258 if (!NT_STATUS_IS_OK(status)) {
265 convert a NDR formatted blob to a ldif formatted ntSecurityDescriptor (SDDL format)
267 static int ldif_write_ntSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
268 const struct ldb_val *in, struct ldb_val *out)
270 struct security_descriptor *sd;
273 sd = talloc(mem_ctx, struct security_descriptor);
277 status = ndr_pull_struct_blob(in, sd, sd,
278 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
279 if (!NT_STATUS_IS_OK(status)) {
283 out->data = (uint8_t *)sddl_encode(mem_ctx, sd, NULL);
285 if (out->data == NULL) {
288 out->length = strlen((const char *)out->data);
293 canonicolise an objectCategory. We use the short form as the cannoical form:
294 cn=Person,cn=Schema,cn=Configuration,<basedn> becomes 'person'
297 static int ldif_canonicalise_objectCategory(struct ldb_context *ldb, void *mem_ctx,
298 const struct ldb_val *in, struct ldb_val *out)
300 struct ldb_dn *dn1 = NULL;
303 dn1 = ldb_dn_explode(mem_ctx, (char *)in->data);
305 oc1 = talloc_strndup(mem_ctx, (char *)in->data, in->length);
306 } else if (ldb_dn_get_comp_num(dn1) >= 1 && strcasecmp(ldb_dn_get_rdn_name(dn1), "cn") == 0) {
307 const struct ldb_val *val = ldb_dn_get_rdn_val(dn1);
308 oc1 = talloc_strndup(mem_ctx, (char *)val->data, val->length);
313 oc2 = ldb_casefold(ldb, mem_ctx, oc1);
314 out->data = (void *)oc2;
315 out->length = strlen(oc2);
321 static int ldif_comparison_objectCategory(struct ldb_context *ldb, void *mem_ctx,
322 const struct ldb_val *v1,
323 const struct ldb_val *v2)
325 struct ldb_dn *dn1 = NULL, *dn2 = NULL;
326 const char *oc1, *oc2;
328 dn1 = ldb_dn_explode(mem_ctx, (char *)v1->data);
330 oc1 = talloc_strndup(mem_ctx, (char *)v1->data, v1->length);
331 } else if (ldb_dn_get_comp_num(dn1) >= 1 && strcasecmp(ldb_dn_get_rdn_name(dn1), "cn") == 0) {
332 const struct ldb_val *val = ldb_dn_get_rdn_val(dn1);
333 oc1 = talloc_strndup(mem_ctx, (char *)val->data, val->length);
338 dn2 = ldb_dn_explode(mem_ctx, (char *)v2->data);
340 oc2 = talloc_strndup(mem_ctx, (char *)v2->data, v2->length);
341 } else if (ldb_dn_get_comp_num(dn2) >= 2 && strcasecmp(ldb_dn_get_rdn_name(dn2), "cn") == 0) {
342 const struct ldb_val *val = ldb_dn_get_rdn_val(dn2);
343 oc2 = talloc_strndup(mem_ctx, (char *)val->data, val->length);
348 oc1 = ldb_casefold(ldb, mem_ctx, oc1);
349 oc2 = ldb_casefold(ldb, mem_ctx, oc2);
360 return strcmp(oc1, oc2);
363 static const struct ldb_attrib_handler samba_handlers[] = {
367 .ldif_read_fn = ldif_read_objectSid,
368 .ldif_write_fn = ldif_write_objectSid,
369 .canonicalise_fn = ldb_canonicalise_objectSid,
370 .comparison_fn = ldb_comparison_objectSid
373 .attr = "securityIdentifier",
375 .ldif_read_fn = ldif_read_objectSid,
376 .ldif_write_fn = ldif_write_objectSid,
377 .canonicalise_fn = ldb_canonicalise_objectSid,
378 .comparison_fn = ldb_comparison_objectSid
381 .attr = "ntSecurityDescriptor",
383 .ldif_read_fn = ldif_read_ntSecurityDescriptor,
384 .ldif_write_fn = ldif_write_ntSecurityDescriptor,
385 .canonicalise_fn = ldb_handler_copy,
386 .comparison_fn = ldb_comparison_binary
389 .attr = "objectGUID",
391 .ldif_read_fn = ldif_read_objectGUID,
392 .ldif_write_fn = ldif_write_objectGUID,
393 .canonicalise_fn = ldb_canonicalise_objectGUID,
394 .comparison_fn = ldb_comparison_objectGUID
397 .attr = "invocationId",
399 .ldif_read_fn = ldif_read_objectGUID,
400 .ldif_write_fn = ldif_write_objectGUID,
401 .canonicalise_fn = ldb_canonicalise_objectGUID,
402 .comparison_fn = ldb_comparison_objectGUID
405 .attr = "schemaIDGUID",
407 .ldif_read_fn = ldif_read_objectGUID,
408 .ldif_write_fn = ldif_write_objectGUID,
409 .canonicalise_fn = ldb_canonicalise_objectGUID,
410 .comparison_fn = ldb_comparison_objectGUID
413 .attr = "attributeSecurityGUID",
415 .ldif_read_fn = ldif_read_objectGUID,
416 .ldif_write_fn = ldif_write_objectGUID,
417 .canonicalise_fn = ldb_canonicalise_objectGUID,
418 .comparison_fn = ldb_comparison_objectGUID
421 .attr = "parentGUID",
423 .ldif_read_fn = ldif_read_objectGUID,
424 .ldif_write_fn = ldif_write_objectGUID,
425 .canonicalise_fn = ldb_canonicalise_objectGUID,
426 .comparison_fn = ldb_comparison_objectGUID
431 .ldif_read_fn = ldif_read_objectGUID,
432 .ldif_write_fn = ldif_write_objectGUID,
433 .canonicalise_fn = ldb_canonicalise_objectGUID,
434 .comparison_fn = ldb_comparison_objectGUID
439 .ldif_read_fn = ldif_read_objectGUID,
440 .ldif_write_fn = ldif_write_objectGUID,
441 .canonicalise_fn = ldb_canonicalise_objectGUID,
442 .comparison_fn = ldb_comparison_objectGUID
445 .attr = "fRSVersionGUID",
447 .ldif_read_fn = ldif_read_objectGUID,
448 .ldif_write_fn = ldif_write_objectGUID,
449 .canonicalise_fn = ldb_canonicalise_objectGUID,
450 .comparison_fn = ldb_comparison_objectGUID
453 .attr = "fRSReplicaSetGUID",
455 .ldif_read_fn = ldif_read_objectGUID,
456 .ldif_write_fn = ldif_write_objectGUID,
457 .canonicalise_fn = ldb_canonicalise_objectGUID,
458 .comparison_fn = ldb_comparison_objectGUID
461 .attr = "netbootGUID",
463 .ldif_read_fn = ldif_read_objectGUID,
464 .ldif_write_fn = ldif_write_objectGUID,
465 .canonicalise_fn = ldb_canonicalise_objectGUID,
466 .comparison_fn = ldb_comparison_objectGUID
469 .attr = "objectCategory",
471 .ldif_read_fn = ldb_handler_copy,
472 .ldif_write_fn = ldb_handler_copy,
473 .canonicalise_fn = ldif_canonicalise_objectCategory,
474 .comparison_fn = ldif_comparison_objectCategory,
479 register the samba ldif handlers
481 int ldb_register_samba_handlers(struct ldb_context *ldb)
483 return ldb_set_attrib_handlers(ldb, samba_handlers, ARRAY_SIZE(samba_handlers));