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|
/*
ldb database library
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2007
Copyright (C) Simo Sorce <idra@samba.org> 2008
This program is free software; you can redistribute it and/or modify
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/>.
*/
/*
* Name: ldb
*
* Component: ldb linked_attributes module
*
* Description: Module to ensure linked attribute pairs remain in sync
*
* Author: Andrew Bartlett
*/
#include "includes.h"
#include "ldb_module.h"
#include "dlinklist.h"
#include "dsdb/samdb/samdb.h"
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;
char *name;
char *value;
};
struct replace_context {
struct la_context *ac;
unsigned int num_elements;
struct ldb_message_element *el;
};
struct la_context {
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 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_oom(ldb);
return NULL;
}
ac->schema = dsdb_get_schema(ldb);
ac->module = module;
ac->req = req;
return ac;
}
/* 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)
{
struct ldb_context *ldb;
struct la_op_store *os;
struct ldb_dn *op_dn;
ldb = ldb_module_get_ctx(ac->module);
op_dn = ldb_dn_from_ldb_val(ac, ldb, dn);
if (!op_dn) {
ldb_asprintf_errstring(ldb,
"could not parse attribute as a DN");
return LDB_ERR_INVALID_DN_SYNTAX;
}
os = talloc_zero(ac, struct la_op_store);
if (!os) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
os->op = op;
os->dn = talloc_steal(os, op_dn);
os->name = talloc_strdup(os, name);
if (!os->name) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
/* Do deletes before adds */
if (op == LA_OP_ADD) {
DLIST_ADD_END(ac->ops, os, struct la_op_store *);
} else {
/* By adding to the head of the list, we do deletes before
* adds when processing a replace */
DLIST_ADD(ac->ops, 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_down_req(struct la_context *ac);
/* 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;
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);
}
ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
if (!ac->schema) {
/* without schema, this doesn't make any sense */
talloc_free(ac);
return ldb_next_request(module, req);
}
/* Need to ensure we only have forward links being specified */
for (i=0; i < req->op.add.message->num_elements; i++) {
const struct ldb_message_element *el = &req->op.add.message->elements[i];
const struct dsdb_attribute *schema_attr
= dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
ldb_asprintf_errstring(ldb,
"attribute %s is not a valid attribute in schema", el->name);
return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
/* We have a valid attribute, now find out if it is linked */
if (schema_attr->linkID == 0) {
continue;
}
if ((schema_attr->linkID & 1) == 1) {
/* Odd is for the target. Illigal to modify */
ldb_asprintf_errstring(ldb,
"attribute %s must not be modified directly, it is a linked attribute", el->name);
return LDB_ERR_UNWILLING_TO_PERFORM;
}
/* Even link IDs are for the originating attribute */
target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
if (!target_attr) {
/*
* windows 2003 has a broken schema where
* the definition of msDS-IsDomainFor
* is missing (which is supposed to be
* the backlink of the msDS-HasDomainNCs
* attribute
*/
continue;
}
attr_name = target_attr->lDAPDisplayName;
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_ADD,
&el->values[j],
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 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;
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) {
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);
}
/* Only entries are interesting, and we only want the olddn */
switch (ares->type) {
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 */
talloc_free(ares);
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
ac->add_dn = ac->del_dn = talloc_steal(ac, ares->message->dn);
/* 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(ldb,
"attribute %s is not a valid attribute in schema",
rc->el[i].name);
talloc_free(ares);
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OBJECT_CLASS_VIOLATION);
}
search_el = ldb_msg_find_element(ares->message,
rc->el[i].name);
/* See if this element already exists */
/* otherwise just ignore as
* the add has already been scheduled */
if ( ! search_el) {
continue;
}
target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
if (!target_attr) {
/*
* windows 2003 has a broken schema where
* the definition of msDS-IsDomainFor
* is missing (which is supposed to be
* the backlink of the msDS-HasDomainNCs
* attribute
*/
continue;
}
attr_name = target_attr->lDAPDisplayName;
/* 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);
if (ret != LDB_SUCCESS) {
talloc_free(ares);
return ldb_module_done(ac->req,
NULL, NULL, ret);
}
}
}
break;
case LDB_REPLY_REFERRAL:
/* ignore */
break;
case LDB_REPLY_DONE:
talloc_free(ares);
if (ac->req->operation == LDB_ADD) {
/* Start the modifies to the backlinks */
ret = la_do_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;
}
talloc_free(ares);
return ret;
}
/* modify */
static int linked_attributes_modify(struct ldb_module *module, struct ldb_request *req)
{
/* Look over list of modifications */
/* Find if any are for linked attributes */
/* Determine the effect of the modification */
/* Apply the modify to the linked entry */
struct ldb_context *ldb;
int i, j;
struct la_context *ac;
struct ldb_request *search_req;
const char **attrs;
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);
}
ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
if (!ac->schema) {
/* without schema, this doesn't make any sense */
return ldb_next_request(module, req);
}
ac->rc = talloc_zero(ac, struct replace_context);
if (!ac->rc) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
for (i=0; i < req->op.mod.message->num_elements; i++) {
bool store_el = false;
const char *attr_name;
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(ldb,
"attribute %s is not a valid attribute in schema", el->name);
return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
/* We have a valid attribute, now find out if it is linked */
if (schema_attr->linkID == 0) {
continue;
}
if ((schema_attr->linkID & 1) == 1) {
/* Odd is for the target. Illegal to modify */
ldb_asprintf_errstring(ldb,
"attribute %s must not be modified directly, it is a linked attribute", el->name);
return LDB_ERR_UNWILLING_TO_PERFORM;
}
/* 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) {
/*
* windows 2003 has a broken schema where
* the definition of msDS-IsDomainFor
* is missing (which is supposed to be
* the backlink of the msDS-HasDomainNCs
* attribute
*/
continue;
}
attr_name = target_attr->lDAPDisplayName;
switch (el->flags & LDB_FLAG_MOD_MASK) {
case LDB_FLAG_MOD_REPLACE:
/* treat as just a normal add the delete part is handled by the callback */
store_el = true;
/* break intentionally missing */
case LDB_FLAG_MOD_ADD:
/* For each value being added, we need to setup the adds */
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_ADD,
&el->values[j],
attr_name);
if (ret != LDB_SUCCESS) {
return ret;
}
}
break;
case LDB_FLAG_MOD_DELETE:
if (el->num_values) {
/* For each value being deleted, we need to setup the delete */
for (j = 0; j < el->num_values; j++) {
ret = la_store_op(ac, LA_OP_DEL,
&el->values[j],
attr_name);
if (ret != LDB_SUCCESS) {
return ret;
}
}
} else {
/* Flag that there was a DELETE
* without a value specified, so we
* need to look for the old value */
store_el = true;
}
break;
}
if (store_el) {
struct ldb_message_element *search_el;
search_el = talloc_realloc(ac->rc, ac->rc->el,
struct ldb_message_element,
ac->rc->num_elements +1);
if (!search_el) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
ac->rc->el = search_el;
ac->rc->el[ac->rc->num_elements] = *el;
ac->rc->num_elements++;
}
}
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 */
attrs = talloc_array(ac->rc, const char *, ac->rc->num_elements + 1);
if (!attrs) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
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, ldb, ac,
req->op.mod.message->dn,
LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
NULL,
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 {
/* nothing to do for this module, proceed */
talloc_free(ac);
ret = ldb_next_request(module, req);
}
return ret;
}
/* delete, rename */
static int linked_attributes_del(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb;
struct ldb_request *search_req;
struct la_context *ac;
const char **attrs;
WERROR werr;
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
*/
ldb = ldb_module_get_ctx(module);
ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
if (!ac->schema) {
/* without schema, this doesn't make any sense */
return ldb_next_request(module, req);
}
werr = dsdb_linked_attribute_lDAPDisplayName_list(ac->schema, ac, &attrs);
if (!W_ERROR_IS_OK(werr)) {
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&search_req, ldb, req,
req->op.del.dn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
NULL,
ac, la_op_search_callback,
req);
if (ret != LDB_SUCCESS) {
return ret;
}
talloc_steal(search_req, attrs);
return ldb_next_request(module, search_req);
}
/* delete, rename */
static int linked_attributes_rename(struct ldb_module *module, struct ldb_request *req)
{
struct la_context *ac;
/* 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
*/
ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
if (!ac->schema) {
/* without schema, this doesn't make any sense */
return ldb_next_request(module, req);
}
/* start with the original request */
return la_down_req(ac);
}
static int la_op_search_callback(struct ldb_request *req,
struct ldb_reply *ares)
{
struct ldb_context *ldb;
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;
int i, j;
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,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->error);
}
/* 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;
}
switch (ac->req->operation) {
case LDB_DELETE:
ac->del_dn = talloc_steal(ac, ares->message->dn);
break;
case LDB_RENAME:
ac->add_dn = talloc_steal(ac, ares->message->dn);
ac->del_dn = talloc_steal(ac, ac->req->op.rename.olddn);
break;
default:
talloc_free(ares);
ldb_set_errstring(ldb,
"operations must be delete or rename");
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];
schema_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
ldb_asprintf_errstring(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);
}
/* Valid attribute, now find out if it is linked */
if (schema_attr->linkID == 0) {
/* Not a linked attribute, skip */
continue;
}
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);
/* for renames, ensure we add it back */
if (ret == LDB_SUCCESS
&& ac->req->operation == LDB_RENAME) {
ret = la_store_op(ac, LA_OP_ADD,
&el->values[j],
attr_name);
}
if (ret != LDB_SUCCESS) {
talloc_free(ares);
return ldb_module_done(ac->req,
NULL, NULL, ret);
}
}
}
break;
case LDB_REPLY_REFERRAL:
/* ignore */
break;
case LDB_REPLY_DONE:
talloc_free(ares);
switch (ac->req->operation) {
case LDB_DELETE:
/* start the mod requests chain */
ret = la_down_req(ac);
if (ret != LDB_SUCCESS) {
return ldb_module_done(ac->req, NULL, NULL, ret);
}
return ret;
case LDB_RENAME:
/* start the mod requests chain */
ret = la_do_mod_request(ac);
if (ret != LDB_SUCCESS) {
return ldb_module_done(ac->req, NULL, NULL,
ret);
}
return ret;
default:
talloc_free(ares);
ldb_set_errstring(ldb,
"operations must be delete or rename");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
}
talloc_free(ares);
return LDB_SUCCESS;
}
/* do a linked attributes modify request */
static int la_do_mod_request(struct la_context *ac)
{
struct ldb_message_element *ret_el;
struct ldb_request *mod_req;
struct ldb_message *new_msg;
struct ldb_context *ldb;
int ret;
/* If we have no modifies in the queue, we are done! */
if (!ac->ops) {
return ldb_module_done(ac->req, ac->op_controls,
ac->op_response, LDB_SUCCESS);
}
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;
}
new_msg->dn = ac->ops->dn;
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;
}
ret_el->num_values = 1;
if (ac->ops->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
/* 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);
if (ret != LDB_SUCCESS) {
return ret;
}
talloc_steal(mod_req, new_msg);
/* 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)
{
struct la_context *ac;
struct ldb_context *ldb;
struct la_op_store *os;
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,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->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);
}
talloc_free(ares);
os = ac->ops;
DLIST_REMOVE(ac->ops, os);
/* this frees the request too
* DO NOT access 'req' after this point */
talloc_free(os);
return la_do_mod_request(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)
{
int ret;
struct la_context *ac;
struct ldb_context *ldb;
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,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->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);
}
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_do_mod_request(ac);
if (ret != LDB_SUCCESS) {
return ldb_module_done(ac->req, NULL, NULL, ret);
}
talloc_free(ares);
/* la_do_mod_request has already sent the callbacks */
return LDB_SUCCESS;
}
/* Having done the original rename try to fix up all the linked attributes */
static int la_rename_callback(struct ldb_request *req, struct ldb_reply *ares)
{
int ret;
struct la_context *ac;
struct ldb_request *search_req;
const char **attrs;
WERROR werr;
struct ldb_context *ldb;
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,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->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);
}
werr = dsdb_linked_attribute_lDAPDisplayName_list(ac->schema, ac, &attrs);
if (!W_ERROR_IS_OK(werr)) {
return LDB_ERR_OPERATIONS_ERROR;
}
ret = ldb_build_search_req(&search_req, ldb, req,
ac->req->op.rename.newdn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
NULL,
ac, la_op_search_callback,
req);
if (ret != LDB_SUCCESS) {
return ret;
}
talloc_steal(search_req, attrs);
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);
}
ac->op_controls = talloc_steal(ac, ares->controls);
ac->op_response = talloc_steal(ac, ares->response);
return ldb_next_request(ac->module, search_req);
}
/* 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)
{
int ret;
struct la_context *ac;
struct ldb_context *ldb;
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,
LDB_ERR_OPERATIONS_ERROR);
}
if (ares->error != LDB_SUCCESS) {
return ldb_module_done(ac->req, ares->controls,
ares->response, ares->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);
}
if (ac->ops) {
struct ldb_request *search_req;
static const char *attrs[] = { NULL };
/* 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);
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);
}
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);
}
}
/* 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;
int ret;
struct ldb_context *ldb;
ldb = ldb_module_get_ctx(ac->module);
switch (ac->req->operation) {
case LDB_ADD:
ret = ldb_build_add_req(&down_req, ldb, ac,
ac->req->op.add.message,
ac->req->controls,
ac, la_add_callback,
ac->req);
break;
case LDB_MODIFY:
ret = ldb_build_mod_req(&down_req, ldb, ac,
ac->req->op.mod.message,
ac->req->controls,
ac, la_mod_del_callback,
ac->req);
break;
case LDB_DELETE:
ret = ldb_build_del_req(&down_req, ldb, ac,
ac->req->op.del.dn,
ac->req->controls,
ac, la_mod_del_callback,
ac->req);
break;
case LDB_RENAME:
ret = ldb_build_rename_req(&down_req, ldb, ac,
ac->req->op.rename.olddn,
ac->req->op.rename.newdn,
ac->req->controls,
ac, la_rename_callback,
ac->req);
break;
default:
ret = LDB_ERR_OPERATIONS_ERROR;
}
if (ret != LDB_SUCCESS) {
return ret;
}
return ldb_next_request(ac->module, down_req);
}
_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_del,
.rename = linked_attributes_rename,
};
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