-/*
+/*
ldb database library
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2007
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
*/
#include "includes.h"
-#include "ldb/include/ldb.h"
-#include "ldb/include/ldb_errors.h"
-#include "ldb/include/ldb_private.h"
+#include "ldb_module.h"
+#include "util/dlinklist.h"
#include "dsdb/samdb/samdb.h"
+#include "librpc/gen_ndr/ndr_misc.h"
+#include "dsdb/samdb/ldb_modules/util.h"
+
+struct la_private {
+ struct la_context *la_list;
+};
struct la_op_store {
struct la_op_store *next;
+ struct la_op_store *prev;
enum la_op {LA_OP_ADD, LA_OP_DEL} op;
- struct ldb_dn *dn;
+ struct GUID guid;
char *name;
char *value;
};
};
struct la_context {
+ struct la_context *next, *prev;
const struct dsdb_schema *schema;
struct ldb_module *module;
struct ldb_request *req;
-
+ struct ldb_dn *add_dn;
+ struct ldb_dn *del_dn;
struct replace_context *rc;
struct la_op_store *ops;
- struct la_op_store *cur;
+ struct ldb_extended *op_response;
+ struct ldb_control **op_controls;
};
static struct la_context *linked_attributes_init(struct ldb_module *module,
struct ldb_request *req)
{
+ struct ldb_context *ldb;
struct la_context *ac;
+ ldb = ldb_module_get_ctx(module);
+
ac = talloc_zero(req, struct la_context);
if (ac == NULL) {
- ldb_set_errstring(module->ldb, "Out of Memory");
+ ldb_oom(ldb);
return NULL;
}
- ac->schema = dsdb_get_schema(module->ldb);
+ ac->schema = dsdb_get_schema(ldb, ac);
ac->module = module;
ac->req = req;
return ac;
}
+/*
+ turn a DN into a GUID
+ */
+static int la_guid_from_dn(struct la_context *ac, struct ldb_dn *dn, struct GUID *guid)
+{
+ NTSTATUS status;
+ int ret;
+
+ status = dsdb_get_extended_dn_guid(dn, guid, "GUID");
+ if (NT_STATUS_IS_OK(status)) {
+ return LDB_SUCCESS;
+ }
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+ DEBUG(4,(__location__ ": Unable to parse GUID for dn %s\n",
+ ldb_dn_get_linearized(dn)));
+ return ldb_operr(ldb_module_get_ctx(ac->module));
+ }
+
+ ret = dsdb_find_guid_by_dn(ldb_module_get_ctx(ac->module), dn, guid);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(4,(__location__ ": Failed to find GUID for dn %s\n",
+ ldb_dn_get_linearized(dn)));
+ return ret;
+ }
+ return LDB_SUCCESS;
+}
+
+
/* Common routine to handle reading the attributes and creating a
* series of modify requests */
static int la_store_op(struct la_context *ac,
enum la_op op, struct ldb_val *dn,
- const char *name, const char *value)
+ const char *name)
{
- struct la_op_store *os, *tmp;
+ struct ldb_context *ldb;
+ struct la_op_store *os;
struct ldb_dn *op_dn;
+ int ret;
+
+ ldb = ldb_module_get_ctx(ac->module);
- op_dn = ldb_dn_from_ldb_val(ac, ac->module->ldb, dn);
+ op_dn = ldb_dn_from_ldb_val(ac, ldb, dn);
if (!op_dn) {
- ldb_asprintf_errstring(ac->module->ldb,
+ ldb_asprintf_errstring(ldb,
"could not parse attribute as a DN");
return LDB_ERR_INVALID_DN_SYNTAX;
}
- /* optimize out del - add operations that would end up
- * with no changes */
- if (ac->ops && op == LA_OP_DEL) {
- /* do a linear search to find out if there is
- * an equivalent add */
- os = ac->ops;
- while (os->next) {
-
- tmp = os->next;
- if (tmp->op == LA_OP_ADD) {
-
- if ((strcmp(name, tmp->name) == 0) &&
- (strcmp(value, tmp->value) == 0) &&
- (ldb_dn_compare(op_dn, tmp->dn) == 0)) {
-
- break;
- }
- }
- os = os->next;
- }
- if (os->next) {
- /* pair found, remove it and return */
- os->next = tmp->next;
- talloc_free(tmp);
- talloc_free(op_dn);
- return LDB_SUCCESS;
- }
- }
-
os = talloc_zero(ac, struct la_op_store);
if (!os) {
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_oom(ldb);
}
os->op = op;
- os->dn = talloc_steal(os, op_dn);
- if (!os->dn) {
- return LDB_ERR_OPERATIONS_ERROR;
+ ret = la_guid_from_dn(ac, op_dn, &os->guid);
+ talloc_free(op_dn);
+ if (ret == LDB_ERR_NO_SUCH_OBJECT && ac->req->operation == LDB_DELETE) {
+ /* we are deleting an object, and we've found it has a
+ * forward link to a target that no longer
+ * exists. This is not an error in the delete, and we
+ * should just not do the deferred delete of the
+ * target attribute
+ */
+ talloc_free(os);
+ return LDB_SUCCESS;
+ }
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
os->name = talloc_strdup(os, name);
if (!os->name) {
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_oom(ldb);
}
- if ((op != LA_OP_DEL) && (value == NULL)) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- if (value) {
- os->value = talloc_strdup(os, value);
- if (!os->value) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- }
-
- if (ac->ops) {
- ac->cur->next = os;
+ /* Do deletes before adds */
+ if (op == LA_OP_ADD) {
+ DLIST_ADD_END(ac->ops, os, struct la_op_store *);
} else {
- ac->ops = os;
+ /* By adding to the head of the list, we do deletes before
+ * adds when processing a replace */
+ DLIST_ADD(ac->ops, os);
}
- ac->cur = os;
return LDB_SUCCESS;
}
-static int la_op_search_callback(struct ldb_request *req,
- struct ldb_reply *ares);
-static int la_do_mod_request(struct la_context *ac);
-static int la_mod_callback(struct ldb_request *req,
- struct ldb_reply *ares);
+static int la_queue_mod_request(struct la_context *ac);
static int la_down_req(struct la_context *ac);
-static int la_down_callback(struct ldb_request *req,
- struct ldb_reply *ares);
/* add */
static int linked_attributes_add(struct ldb_module *module, struct ldb_request *req)
{
+ struct ldb_context *ldb;
const struct dsdb_attribute *target_attr;
struct la_context *ac;
const char *attr_name;
- const char *attr_val;
+ struct ldb_control *ctrl;
+ unsigned int i, j;
int ret;
- int i, j;
+
+ ldb = ldb_module_get_ctx(module);
if (ldb_dn_is_special(req->op.add.message->dn)) {
/* do not manipulate our control entries */
return ldb_next_request(module, req);
}
+ if (!(ctrl = ldb_request_get_control(req, DSDB_CONTROL_APPLY_LINKS))) {
+ /* don't do anything special for linked attributes, repl_meta_data has done it */
+ return ldb_next_request(module, req);
+ }
+ ctrl->critical = false;
+
ac = linked_attributes_init(module, req);
if (!ac) {
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_operr(ldb);
}
if (!ac->schema) {
const struct dsdb_attribute *schema_attr
= dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
- ldb_asprintf_errstring(module->ldb,
+ ldb_asprintf_errstring(ldb,
"attribute %s is not a valid attribute in schema", el->name);
- return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
- /* We have a valid attribute, now find out if it is linked */
- if (schema_attr->linkID == 0) {
+ /* We have a valid attribute, now find out if it is a forward link */
+ if ((schema_attr->linkID == 0)) {
continue;
}
-
+
if ((schema_attr->linkID & 1) == 1) {
- /* Odd is for the target. Illigal to modify */
- ldb_asprintf_errstring(module->ldb,
- "attribute %s must not be modified directly, it is a linked attribute", el->name);
- return LDB_ERR_UNWILLING_TO_PERFORM;
+ unsigned int functional_level;
+
+ functional_level = dsdb_functional_level(ldb);
+ SMB_ASSERT(functional_level > DS_DOMAIN_FUNCTION_2000);
}
-
+
/* Even link IDs are for the originating attribute */
target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
if (!target_attr) {
}
attr_name = target_attr->lDAPDisplayName;
- attr_val = ldb_dn_get_linearized(ac->req->op.add.message->dn);
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_ADD,
&el->values[j],
- attr_name, attr_val);
+ attr_name);
if (ret != LDB_SUCCESS) {
return ret;
}
/* if no linked attributes are present continue */
if (ac->ops == NULL) {
+ /* nothing to do for this module, proceed */
talloc_free(ac);
return ldb_next_request(module, req);
}
- /* start with the first one */
- return la_do_mod_request(ac);
+ /* start with the original request */
+ return la_down_req(ac);
}
+/* For a delete or rename, we need to find out what linked attributes
+ * are currently on this DN, and then deal with them. This is the
+ * callback to the base search */
+
static int la_mod_search_callback(struct ldb_request *req, struct ldb_reply *ares)
{
+ struct ldb_context *ldb;
const struct dsdb_attribute *schema_attr;
const struct dsdb_attribute *target_attr;
struct ldb_message_element *search_el;
struct replace_context *rc;
struct la_context *ac;
const char *attr_name;
- const char *dn;
- int i, j;
+ unsigned int i, j;
int ret = LDB_SUCCESS;
ac = talloc_get_type(req->context, struct la_context);
+ ldb = ldb_module_get_ctx(ac->module);
rc = ac->rc;
if (!ares) {
case LDB_REPLY_ENTRY:
if (ldb_dn_compare(ares->message->dn, ac->req->op.mod.message->dn) != 0) {
+ ldb_asprintf_errstring(ldb,
+ "linked_attributes: %s is not the DN we were looking for",
+ ldb_dn_get_linearized(ares->message->dn));
/* Guh? We only asked for this DN */
- ldb_oom(ac->module->ldb);
talloc_free(ares);
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
- dn = ldb_dn_get_linearized(ac->req->op.add.message->dn);
+ ac->add_dn = ac->del_dn = talloc_steal(ac, ares->message->dn);
- for (i = 0; i < rc->num_elements; i++) {
+ /* We don't populate 'rc' for ADD - it can't be deleting elements anyway */
+ for (i = 0; rc && i < rc->num_elements; i++) {
schema_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, rc->el[i].name);
if (!schema_attr) {
- ldb_asprintf_errstring(ac->module->ldb,
+ ldb_asprintf_errstring(ldb,
"attribute %s is not a valid attribute in schema",
rc->el[i].name);
talloc_free(ares);
}
attr_name = target_attr->lDAPDisplayName;
- /* make sure we manage each value */
+ /* Now we know what was there, we can remove it for the re-add */
for (j = 0; j < search_el->num_values; j++) {
ret = la_store_op(ac, LA_OP_DEL,
&search_el->values[j],
- attr_name, dn);
+ attr_name);
if (ret != LDB_SUCCESS) {
talloc_free(ares);
return ldb_module_done(ac->req,
talloc_free(ares);
- /* All mods set up, start with the first one */
- ret = la_do_mod_request(ac);
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
+ if (ac->req->operation == LDB_ADD) {
+ /* Start the modifies to the backlinks */
+ ret = la_queue_mod_request(ac);
+
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ ret);
+ }
+ } else {
+ /* Start with the original request */
+ ret = la_down_req(ac);
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
}
return LDB_SUCCESS;
}
/* Determine the effect of the modification */
/* Apply the modify to the linked entry */
- int i, j;
+ struct ldb_context *ldb;
+ unsigned int i, j;
struct la_context *ac;
struct ldb_request *search_req;
+ const char **attrs;
+ struct ldb_control *ctrl;
int ret;
+ ldb = ldb_module_get_ctx(module);
+
if (ldb_dn_is_special(req->op.mod.message->dn)) {
/* do not manipulate our control entries */
return ldb_next_request(module, req);
}
+ if (!(ctrl = ldb_request_get_control(req, DSDB_CONTROL_APPLY_LINKS))) {
+ /* don't do anything special for linked attributes, repl_meta_data has done it */
+ return ldb_next_request(module, req);
+ }
+ ctrl->critical = false;
+
ac = linked_attributes_init(module, req);
if (!ac) {
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_operr(ldb);
}
if (!ac->schema) {
return ldb_next_request(module, req);
}
- ac->rc = NULL;
+ ac->rc = talloc_zero(ac, struct replace_context);
+ if (!ac->rc) {
+ return ldb_oom(ldb);
+ }
for (i=0; i < req->op.mod.message->num_elements; i++) {
bool store_el = false;
const char *attr_name;
- const char *attr_val;
const struct dsdb_attribute *target_attr;
const struct ldb_message_element *el = &req->op.mod.message->elements[i];
const struct dsdb_attribute *schema_attr
= dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
- ldb_asprintf_errstring(module->ldb,
+ ldb_asprintf_errstring(ldb,
"attribute %s is not a valid attribute in schema", el->name);
- return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
- /* We have a valid attribute, now find out if it is linked */
+ /* We have a valid attribute, now find out if it is a forward link
+ (Even link IDs are for the originating attribute) */
if (schema_attr->linkID == 0) {
continue;
}
-
+
if ((schema_attr->linkID & 1) == 1) {
- /* Odd is for the target. Illegal to modify */
- ldb_asprintf_errstring(module->ldb,
- "attribute %s must not be modified directly, it is a linked attribute", el->name);
- return LDB_ERR_UNWILLING_TO_PERFORM;
+ unsigned int functional_level;
+
+ functional_level = dsdb_functional_level(ldb);
+ SMB_ASSERT(functional_level > DS_DOMAIN_FUNCTION_2000);
}
-
- /* Even link IDs are for the originating attribute */
-
/* Now find the target attribute */
target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
if (!target_attr) {
}
attr_name = target_attr->lDAPDisplayName;
- attr_val = ldb_dn_get_linearized(ac->req->op.mod.message->dn);
switch (el->flags & LDB_FLAG_MOD_MASK) {
case LDB_FLAG_MOD_REPLACE:
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_ADD,
&el->values[j],
- attr_name, attr_val);
+ attr_name);
if (ret != LDB_SUCCESS) {
return ret;
}
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_DEL,
&el->values[j],
- attr_name, attr_val);
+ attr_name);
if (ret != LDB_SUCCESS) {
return ret;
}
if (store_el) {
struct ldb_message_element *search_el;
- /* Fill out ac->rc only if we have to find the old values */
- if (!ac->rc) {
- ac->rc = talloc_zero(ac, struct replace_context);
- if (!ac->rc) {
- ldb_oom(module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- }
-
search_el = talloc_realloc(ac->rc, ac->rc->el,
struct ldb_message_element,
ac->rc->num_elements +1);
if (!search_el) {
- ldb_oom(module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_oom(ldb);
}
ac->rc->el = search_el;
}
}
- /* both replace and delete without values are handled in the callback
- * after the search on the entry to be modified is performed */
+ if (ac->ops || ac->rc->el) {
+ /* both replace and delete without values are handled in the callback
+ * after the search on the entry to be modified is performed */
- /* Only bother doing a search of this entry (to find old
- * values) if replace or delete operations are attempted */
- if (ac->rc) {
- const char **attrs;
-
- attrs = talloc_array(ac->rc, const char *, ac->rc->num_elements +1);
+ attrs = talloc_array(ac->rc, const char *, ac->rc->num_elements + 1);
if (!attrs) {
- ldb_oom(module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_oom(ldb);
}
- for (i = 0; i < ac->rc->num_elements; i++) {
+ for (i = 0; ac->rc && i < ac->rc->num_elements; i++) {
attrs[i] = ac->rc->el[i].name;
}
attrs[i] = NULL;
/* The callback does all the hard work here */
- ret = ldb_build_search_req(&search_req, module->ldb, ac,
+ ret = ldb_build_search_req(&search_req, ldb, ac,
req->op.mod.message->dn,
LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
ac, la_mod_search_callback,
req);
+ /* We need to figure out our own extended DN, to fill in as the backlink target */
+ if (ret == LDB_SUCCESS) {
+ ret = ldb_request_add_control(search_req,
+ LDB_CONTROL_EXTENDED_DN_OID,
+ false, NULL);
+ }
if (ret == LDB_SUCCESS) {
talloc_steal(search_req, attrs);
ret = ldb_next_request(module, search_req);
}
-
} else {
- if (ac->ops) {
- /* Jump directly to handling the modifies */
- ret = la_do_mod_request(ac);
- } else {
- /* nothing to do for this module, proceed */
- talloc_free(ac);
- ret = ldb_next_request(module, req);
- }
+ /* nothing to do for this module, proceed */
+ talloc_free(ac);
+ ret = ldb_next_request(module, req);
}
return ret;
}
-/* delete, rename */
-static int linked_attributes_op(struct ldb_module *module, struct ldb_request *req)
+static int linked_attributes_fix_links(struct ldb_module *module,
+ struct ldb_dn *old_dn, struct ldb_dn *new_dn,
+ struct ldb_message_element *el, struct dsdb_schema *schema,
+ const struct dsdb_attribute *schema_attr)
{
- struct ldb_request *search_req;
- struct ldb_dn *base_dn;
- struct la_context *ac;
- const char **attrs;
- WERROR werr;
+ unsigned int i, j;
+ TALLOC_CTX *tmp_ctx = talloc_new(module);
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ const struct dsdb_attribute *target;
+ const char *attrs[2];
int ret;
- /* This gets complex: We need to:
- - Do a search for the entry
- - Wait for these result to appear
- - In the callback for the result, issue a modify
- request based on the linked attributes found
- - Wait for each modify result
- - Regain our sainity
- */
-
- switch (req->operation) {
- case LDB_RENAME:
- base_dn = req->op.rename.olddn;
- break;
- case LDB_DELETE:
- base_dn = req->op.del.dn;
- break;
- default:
- return LDB_ERR_OPERATIONS_ERROR;
+ target = dsdb_attribute_by_linkID(schema, schema_attr->linkID ^ 1);
+ if (target == NULL) {
+ /* there is no counterpart link to change */
+ return LDB_SUCCESS;
}
- ac = linked_attributes_init(module, req);
- if (!ac) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ attrs[0] = target->lDAPDisplayName;
+ attrs[1] = NULL;
- if (!ac->schema) {
- /* without schema, this doesn't make any sense */
- return ldb_next_request(module, req);
- }
+ for (i=0; i<el->num_values; i++) {
+ struct dsdb_dn *dsdb_dn;
+ struct ldb_result *res;
+ struct ldb_message *msg;
+ struct ldb_message_element *el2;
- werr = dsdb_linked_attribute_lDAPDisplayName_list(ac->schema, ac, &attrs);
- if (!W_ERROR_IS_OK(werr)) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], schema_attr->syntax->ldap_oid);
+ if (dsdb_dn == NULL) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
- ret = ldb_build_search_req(&search_req, module->ldb, req,
- base_dn, LDB_SCOPE_BASE,
- "(objectClass=*)", attrs,
- NULL,
- ac, la_op_search_callback,
- req);
+ ret = dsdb_module_search_dn(module, tmp_ctx, &res, dsdb_dn->dn,
+ attrs,
+ DSDB_SEARCH_SHOW_DELETED |
+ DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT |
+ DSDB_SEARCH_REVEAL_INTERNALS);
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - remote not found - %s",
+ el->name, target->lDAPDisplayName,
+ ldb_dn_get_linearized(old_dn),
+ ldb_dn_get_linearized(dsdb_dn->dn),
+ ldb_errstring(ldb));
+ talloc_free(tmp_ctx);
+ return ret;
+ }
+ msg = res->msgs[0];
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ if (msg->num_elements == 0) {
+ /* Forward link without backlink remaining - nothing to do here */
+ continue;
+ } else if (msg->num_elements != 1) {
+ ldb_asprintf_errstring(ldb, "Bad msg elements - got %u elements, expected one element to be returned in linked_attributes_fix_links for %s",
+ msg->num_elements, ldb_dn_get_linearized(msg->dn));
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (ldb_attr_cmp(msg->elements[0].name, target->lDAPDisplayName) != 0) {
+ ldb_asprintf_errstring(ldb, "Bad returned attribute in linked_attributes_fix_links: got %s, expected %s for %s", msg->elements[0].name, target->lDAPDisplayName, ldb_dn_get_linearized(msg->dn));
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ el2 = &msg->elements[0];
- talloc_steal(search_req, attrs);
+ el2->flags = LDB_FLAG_MOD_REPLACE;
- return ldb_next_request(module, search_req);
-}
+ /* find our DN in the values */
+ for (j=0; j<el2->num_values; j++) {
+ struct dsdb_dn *dsdb_dn2;
+ dsdb_dn2 = dsdb_dn_parse(msg, ldb, &el2->values[j], target->syntax->ldap_oid);
+ if (dsdb_dn2 == NULL) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+ if (ldb_dn_compare(old_dn, dsdb_dn2->dn) != 0) {
+ continue;
+ }
+ ret = ldb_dn_update_components(dsdb_dn2->dn, new_dn);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
-static int la_op_search_callback(struct ldb_request *req,
- struct ldb_reply *ares)
-{
- struct la_context *ac;
- const struct dsdb_attribute *schema_attr;
- const struct dsdb_attribute *target_attr;
- const struct ldb_message_element *el;
- const char *attr_name;
- const char *deldn;
- const char *adddn;
- int i, j;
- int ret;
+ el2->values[j] = data_blob_string_const(
+ dsdb_dn_get_extended_linearized(el2->values, dsdb_dn2, 1));
+ }
- ac = talloc_get_type(req->context, struct la_context);
+ ret = dsdb_check_single_valued_link(target, el2);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(tmp_ctx);
+ return ret;
+ }
- if (!ares) {
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OPERATIONS_ERROR);
- }
- if (ares->error != LDB_SUCCESS) {
- return ldb_module_done(ac->req, ares->controls,
- ares->response, ares->error);
+ ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE | DSDB_MODIFY_RELAX);
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - update failed - %s",
+ el->name, target->lDAPDisplayName,
+ ldb_dn_get_linearized(old_dn),
+ ldb_dn_get_linearized(dsdb_dn->dn),
+ ldb_errstring(ldb));
+ talloc_free(tmp_ctx);
+ return ret;
+ }
}
- /* Only entries are interesting, and we only want the olddn */
- switch (ares->type) {
- case LDB_REPLY_ENTRY:
- ret = ldb_dn_compare(ares->message->dn, req->op.search.base);
- if (ret != 0) {
- /* Guh? We only asked for this DN */
- talloc_free(ares);
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OPERATIONS_ERROR);
- }
- if (ares->message->num_elements == 0) {
- /* only bother at all if there were some
- * linked attributes found */
- talloc_free(ares);
- return LDB_SUCCESS;
- }
+ talloc_free(tmp_ctx);
+ return LDB_SUCCESS;
+}
- switch (ac->req->operation) {
- case LDB_DELETE:
- deldn = ldb_dn_get_linearized(ac->req->op.del.dn);
- adddn = NULL;
- break;
- case LDB_RENAME:
- deldn = ldb_dn_get_linearized(ac->req->op.rename.olddn);
- adddn = ldb_dn_get_linearized(ac->req->op.rename.newdn);
- break;
- default:
- talloc_free(ares);
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OPERATIONS_ERROR);
- }
- for (i = 0; i < ares->message->num_elements; i++) {
- el = &ares->message->elements[i];
+/* rename */
+static int linked_attributes_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_result *res;
+ struct ldb_message *msg;
+ unsigned int i;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ struct dsdb_schema *schema;
+ int ret;
+ /*
+ - load the current msg
+ - find any linked attributes
+ - if its a link then find the target object
+ - modify the target linked attributes with the new DN
+ */
+ ret = dsdb_module_search_dn(module, req, &res, req->op.rename.olddn,
+ NULL, DSDB_SEARCH_SHOW_DELETED);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
- schema_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
- if (!schema_attr) {
- ldb_asprintf_errstring(ac->module->ldb,
- "attribute %s is not a valid attribute"
- " in schema", el->name);
- talloc_free(ares);
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OBJECT_CLASS_VIOLATION);
- }
+ schema = dsdb_get_schema(ldb, res);
+ if (!schema) {
+ return ldb_oom(ldb);
+ }
- /* Valid attribute, now find out if it is linked */
- if (schema_attr->linkID == 0) {
- /* Not a linked attribute, skip */
- continue;
- }
+ msg = res->msgs[0];
- if ((schema_attr->linkID & 1) == 0) {
- /* Odd is for the target. */
- target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
- if (!target_attr) {
- continue;
- }
- attr_name = target_attr->lDAPDisplayName;
- } else {
- target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID - 1);
- if (!target_attr) {
- continue;
- }
- attr_name = target_attr->lDAPDisplayName;
- }
- for (j = 0; j < el->num_values; j++) {
- ret = la_store_op(ac, LA_OP_DEL,
- &el->values[j],
- attr_name, deldn);
- if (ret != LDB_SUCCESS) {
- talloc_free(ares);
- return ldb_module_done(ac->req,
- NULL, NULL, ret);
- }
- if (!adddn) continue;
- ret = la_store_op(ac, LA_OP_ADD,
- &el->values[j],
- attr_name, adddn);
- if (ret != LDB_SUCCESS) {
- talloc_free(ares);
- return ldb_module_done(ac->req,
- NULL, NULL, ret);
- }
- }
+ for (i=0; i<msg->num_elements; i++) {
+ struct ldb_message_element *el = &msg->elements[i];
+ const struct dsdb_attribute *schema_attr
+ = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
+ if (!schema_attr || schema_attr->linkID == 0) {
+ continue;
+ }
+ ret = linked_attributes_fix_links(module, msg->dn, req->op.rename.newdn, el,
+ schema, schema_attr);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(res);
+ return ret;
}
+ }
- break;
+ talloc_free(res);
- case LDB_REPLY_REFERRAL:
- /* ignore */
- break;
+ return ldb_next_request(module, req);
+}
- case LDB_REPLY_DONE:
- talloc_free(ares);
+/* queue a linked attributes modify request in the la_private
+ structure */
+static int la_queue_mod_request(struct la_context *ac)
+{
+ struct la_private *la_private =
+ talloc_get_type(ldb_module_get_private(ac->module), struct la_private);
- if (ac->ops) {
- /* start the mod requests chain */
- ret = la_do_mod_request(ac);
- } else {
- ret = la_down_req(ac);
- }
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
- }
- return LDB_SUCCESS;
+ if (la_private == NULL) {
+ ldb_debug(ldb_module_get_ctx(ac->module), LDB_DEBUG_ERROR, __location__ ": No la_private transaction setup\n");
+ return ldb_operr(ldb_module_get_ctx(ac->module));
}
- talloc_free(ares);
- return LDB_SUCCESS;
+ talloc_steal(la_private, ac);
+ DLIST_ADD(la_private->la_list, ac);
+
+ return ldb_module_done(ac->req, ac->op_controls,
+ ac->op_response, LDB_SUCCESS);
}
-/* do a linked attributes modify request */
-static int la_do_mod_request(struct la_context *ac)
+/* Having done the original operation, then try to fix up all the linked attributes for modify and delete */
+static int la_mod_del_callback(struct ldb_request *req, struct ldb_reply *ares)
{
- struct ldb_message_element *ret_el;
- struct ldb_request *mod_req;
- struct ldb_message *new_msg;
+ struct la_context *ac;
struct ldb_context *ldb;
int ret;
- ldb = ac->module->ldb;
+ ac = talloc_get_type(req->context, struct la_context);
+ ldb = ldb_module_get_ctx(ac->module);
- /* Create the modify request */
- new_msg = ldb_msg_new(ac);
- if (!new_msg) {
- ldb_oom(ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ if (!ares) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
}
- new_msg->dn = ldb_dn_copy(new_msg, ac->ops->dn);
- if (!new_msg->dn) {
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
}
- if (ac->ops->op == LA_OP_ADD) {
- ret = ldb_msg_add_empty(new_msg, ac->ops->name,
- LDB_FLAG_MOD_ADD, &ret_el);
- } else {
- ret = ldb_msg_add_empty(new_msg, ac->ops->name,
- LDB_FLAG_MOD_DELETE, &ret_el);
- }
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- ret_el->values = talloc_array(new_msg, struct ldb_val, 1);
- if (!ret_el->values) {
- ldb_oom(ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ares->type != LDB_REPLY_DONE) {
+ ldb_set_errstring(ldb,
+ "invalid ldb_reply_type in callback");
+ talloc_free(ares);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
}
- ret_el->values[0] = data_blob_string_const(ac->ops->value);
- ret_el->num_values = 1;
- /* use ac->ops as the mem_ctx so that the request will be freed
- * in the callback as soon as completed */
- ret = ldb_build_mod_req(&mod_req, ldb, ac->ops,
- new_msg,
- NULL,
- ac, la_mod_callback,
- ac->req);
+ ac->op_controls = talloc_steal(ac, ares->controls);
+ ac->op_response = talloc_steal(ac, ares->response);
+
+ /* If we have modfies to make, this is the time to do them for modify and delete */
+ ret = la_queue_mod_request(ac);
+
if (ret != LDB_SUCCESS) {
- return ret;
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
- talloc_steal(mod_req, new_msg);
+ talloc_free(ares);
+
+ /* la_queue_mod_request has already sent the callbacks */
+ return LDB_SUCCESS;
- /* Run the new request */
- return ldb_next_request(ac->module, mod_req);
}
-static int la_mod_callback(struct ldb_request *req, struct ldb_reply *ares)
+/* Having done the original add, then try to fix up all the linked attributes
+
+ This is done after the add so the links can get the extended DNs correctly.
+ */
+static int la_add_callback(struct ldb_request *req, struct ldb_reply *ares)
{
struct la_context *ac;
- struct la_op_store *os;
+ struct ldb_context *ldb;
int ret;
ac = talloc_get_type(req->context, struct la_context);
+ ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
return ldb_module_done(ac->req, NULL, NULL,
}
if (ares->type != LDB_REPLY_DONE) {
- ldb_set_errstring(ac->module->ldb,
+ ldb_set_errstring(ldb,
"invalid ldb_reply_type in callback");
talloc_free(ares);
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
- talloc_free(ares);
-
if (ac->ops) {
- os = ac->ops;
- ac->ops = os->next;
+ struct ldb_request *search_req;
+ static const char *attrs[] = { NULL };
- /* this frees the request too
- * DO NOT access 'req' after this point */
- talloc_free(os);
- }
+ /* The callback does all the hard work here - we need
+ * the objectGUID and SID of the added record */
+ ret = ldb_build_search_req(&search_req, ldb, ac,
+ ac->req->op.add.message->dn,
+ LDB_SCOPE_BASE,
+ "(objectClass=*)", attrs,
+ NULL,
+ ac, la_mod_search_callback,
+ ac->req);
- /* as last op run the original request */
- if (ac->ops) {
- ret = la_do_mod_request(ac);
- } else {
- ret = la_down_req(ac);
- }
+ if (ret == LDB_SUCCESS) {
+ ret = ldb_request_add_control(search_req,
+ LDB_CONTROL_EXTENDED_DN_OID,
+ false, NULL);
+ }
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ ret);
+ }
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
+ ac->op_controls = talloc_steal(ac, ares->controls);
+ ac->op_response = talloc_steal(ac, ares->response);
+
+ return ldb_next_request(ac->module, search_req);
+
+ } else {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
}
- return LDB_SUCCESS;
}
+/* Reconstruct the original request, but pointing at our local callback to finish things off */
static int la_down_req(struct la_context *ac)
{
struct ldb_request *down_req;
+ struct ldb_context *ldb;
int ret;
+ ldb = ldb_module_get_ctx(ac->module);
+
switch (ac->req->operation) {
case LDB_ADD:
- ret = ldb_build_add_req(&down_req, ac->module->ldb, ac,
+ ret = ldb_build_add_req(&down_req, ldb, ac,
ac->req->op.add.message,
ac->req->controls,
- ac, la_down_callback,
+ ac, la_add_callback,
ac->req);
break;
case LDB_MODIFY:
- ret = ldb_build_mod_req(&down_req, ac->module->ldb, ac,
+ ret = ldb_build_mod_req(&down_req, ldb, ac,
ac->req->op.mod.message,
ac->req->controls,
- ac, la_down_callback,
- ac->req);
- break;
- case LDB_DELETE:
- ret = ldb_build_del_req(&down_req, ac->module->ldb, ac,
- ac->req->op.del.dn,
- ac->req->controls,
- ac, la_down_callback,
+ ac, la_mod_del_callback,
ac->req);
break;
- case LDB_RENAME:
- ret = ldb_build_rename_req(&down_req, ac->module->ldb, ac,
- ac->req->op.rename.olddn,
- ac->req->op.rename.newdn,
- ac->req->controls,
- ac, la_down_callback,
- ac->req);
- break;
default:
ret = LDB_ERR_OPERATIONS_ERROR;
}
return ldb_next_request(ac->module, down_req);
}
-static int la_down_callback(struct ldb_request *req, struct ldb_reply *ares)
+/*
+ use the GUID part of an extended DN to find the target DN, in case
+ it has moved
+ */
+static int la_find_dn_target(struct ldb_module *module, struct la_context *ac,
+ struct GUID *guid, struct ldb_dn **dn)
{
- struct la_context *ac;
+ return dsdb_find_dn_by_guid(ldb_module_get_ctx(ac->module), ac, guid, dn);
+}
- ac = talloc_get_type(req->context, struct la_context);
+/* apply one la_context op change */
+static int la_do_op_request(struct ldb_module *module, struct la_context *ac, struct la_op_store *op)
+{
+ struct ldb_message_element *ret_el;
+ struct ldb_message *new_msg;
+ struct ldb_context *ldb;
+ int ret;
- if (!ares) {
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OPERATIONS_ERROR);
+ ldb = ldb_module_get_ctx(ac->module);
+
+ /* Create the modify request */
+ new_msg = ldb_msg_new(ac);
+ if (!new_msg) {
+ return ldb_oom(ldb);
}
- if (ares->error != LDB_SUCCESS) {
- return ldb_module_done(ac->req, ares->controls,
- ares->response, ares->error);
+
+ ret = la_find_dn_target(module, ac, &op->guid, &new_msg->dn);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- if (ares->type != LDB_REPLY_DONE) {
- ldb_set_errstring(ac->module->ldb,
- "invalid ldb_reply_type in callback");
- talloc_free(ares);
- return ldb_module_done(ac->req, NULL, NULL,
- LDB_ERR_OPERATIONS_ERROR);
+ if (op->op == LA_OP_ADD) {
+ ret = ldb_msg_add_empty(new_msg, op->name,
+ LDB_FLAG_MOD_ADD, &ret_el);
+ } else {
+ ret = ldb_msg_add_empty(new_msg, op->name,
+ LDB_FLAG_MOD_DELETE, &ret_el);
+ }
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ ret_el->values = talloc_array(new_msg, struct ldb_val, 1);
+ if (!ret_el->values) {
+ return ldb_oom(ldb);
+ }
+ ret_el->num_values = 1;
+ if (op->op == LA_OP_ADD) {
+ ret_el->values[0] = data_blob_string_const(ldb_dn_get_extended_linearized(new_msg, ac->add_dn, 1));
+ } else {
+ ret_el->values[0] = data_blob_string_const(ldb_dn_get_extended_linearized(new_msg, ac->del_dn, 1));
+ }
+
+#if 0
+ ldb_debug(ldb, LDB_DEBUG_WARNING,
+ "link on %s %s: %s %s\n",
+ ldb_dn_get_linearized(new_msg->dn), ret_el->name,
+ ret_el->values[0].data, ac->ops->op == LA_OP_ADD ? "added" : "deleted");
+#endif
+
+ if (DEBUGLVL(4)) {
+ DEBUG(4,("Applying linked attribute change:\n%s\n",
+ ldb_ldif_message_string(ldb, op, LDB_CHANGETYPE_MODIFY, new_msg)));
+ }
+
+ ret = dsdb_module_modify(module, new_msg, DSDB_FLAG_NEXT_MODULE);
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s'\n%s\n",
+ ldb_errstring(ldb),
+ ldb_ldif_message_string(ldb, op, LDB_CHANGETYPE_MODIFY, new_msg));
+ }
+
+ return ret;
+}
+
+/* apply one set of la_context changes */
+static int la_do_mod_request(struct ldb_module *module, struct la_context *ac)
+{
+ struct la_op_store *op;
+
+ for (op = ac->ops; op; op=op->next) {
+ int ret = la_do_op_request(module, ac, op);
+ if (ret != LDB_SUCCESS) {
+ if (ret != LDB_ERR_NO_SUCH_OBJECT) {
+ return ret;
+ }
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+
+/*
+ we hook into the transaction operations to allow us to
+ perform the linked attribute updates at the end of the whole
+ transaction. This allows a forward linked attribute to be created
+ before the target is created, as long as the target is created
+ in the same transaction
+ */
+static int linked_attributes_start_transaction(struct ldb_module *module)
+{
+ /* create our private structure for this transaction */
+ struct la_private *la_private = talloc_get_type(ldb_module_get_private(module),
+ struct la_private);
+ talloc_free(la_private);
+ la_private = talloc(module, struct la_private);
+ if (la_private == NULL) {
+ return ldb_oom(ldb_module_get_ctx(module));
}
+ la_private->la_list = NULL;
+ ldb_module_set_private(module, la_private);
+ return ldb_next_start_trans(module);
+}
- return ldb_module_done(ac->req, ares->controls,
- ares->response, ares->error);
+/*
+ on prepare commit we loop over our queued la_context structures
+ and apply each of them
+ */
+static int linked_attributes_prepare_commit(struct ldb_module *module)
+{
+ struct la_private *la_private =
+ talloc_get_type(ldb_module_get_private(module), struct la_private);
+ struct la_context *ac;
+
+ if (!la_private) {
+ /* prepare commit without begin_transaction - let someone else return the error, just don't segfault */
+ return ldb_next_prepare_commit(module);
+ }
+ /* walk the list backwards, to do the first entry first, as we
+ * added the entries with DLIST_ADD() which puts them at the
+ * start of the list */
+
+ /* Start at the end of the list - so we can start
+ * there, but ensure we don't create a loop by NULLing
+ * it out in the first element */
+ ac = DLIST_TAIL(la_private->la_list);
+
+ for (; ac; ac=DLIST_PREV(ac)) {
+ int ret;
+ ac->req = NULL;
+ ret = la_do_mod_request(module, ac);
+ if (ret != LDB_SUCCESS) {
+ DEBUG(0,(__location__ ": Failed mod request ret=%d\n", ret));
+ talloc_free(la_private);
+ ldb_module_set_private(module, NULL);
+ return ret;
+ }
+ }
+
+ talloc_free(la_private);
+ ldb_module_set_private(module, NULL);
+
+ return ldb_next_prepare_commit(module);
}
+static int linked_attributes_del_transaction(struct ldb_module *module)
+{
+ struct la_private *la_private =
+ talloc_get_type(ldb_module_get_private(module), struct la_private);
+ talloc_free(la_private);
+ ldb_module_set_private(module, NULL);
+ return ldb_next_del_trans(module);
+}
+
+
_PUBLIC_ const struct ldb_module_ops ldb_linked_attributes_module_ops = {
.name = "linked_attributes",
.add = linked_attributes_add,
.modify = linked_attributes_modify,
- .del = linked_attributes_op,
- .rename = linked_attributes_op,
+ .rename = linked_attributes_rename,
+ .start_transaction = linked_attributes_start_transaction,
+ .prepare_commit = linked_attributes_prepare_commit,
+ .del_transaction = linked_attributes_del_transaction,
};
git.samba.org / samba.git / blobdiff