*/
#include "includes.h"
-#include "ldb/include/ldb.h"
-#include "ldb/include/ldb_errors.h"
-#include "ldb/include/ldb_private.h"
-#include "ldb/include/dlinklist.h"
+#include "ldb_module.h"
+#include "dlinklist.h"
#include "dsdb/samdb/samdb.h"
+#include "librpc/gen_ndr/ndr_misc.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 *partition_dn;
struct ldb_dn *add_dn;
struct ldb_dn *del_dn;
struct replace_context *rc;
static struct la_context *linked_attributes_init(struct ldb_module *module,
struct ldb_request *req)
{
+ struct ldb_context *ldb;
struct la_context *ac;
+ const struct ldb_control *partition_ctrl;
+
+ ldb = ldb_module_get_ctx(module);
ac = talloc_zero(req, struct la_context);
if (ac == NULL) {
- ldb_oom(module->ldb);
+ ldb_oom(ldb);
return NULL;
}
- ac->schema = dsdb_get_schema(module->ldb);
+ ac->schema = dsdb_get_schema(ldb);
ac->module = module;
ac->req = req;
+ /* remember the partition DN that came in, if given */
+ partition_ctrl = ldb_request_get_control(req, DSDB_CONTROL_CURRENT_PARTITION_OID);
+ if (partition_ctrl) {
+ const struct dsdb_control_current_partition *partition;
+ partition = talloc_get_type(partition_ctrl->data,
+ struct dsdb_control_current_partition);
+ SMB_ASSERT(partition && partition->version == DSDB_CONTROL_CURRENT_PARTITION_VERSION);
+
+ ac->partition_dn = ldb_dn_copy(ac, partition->dn);
+ }
+
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)
+{
+ const struct ldb_val *guid_val;
+ int ret;
+
+ guid_val = ldb_dn_get_extended_component(dn, "GUID");
+ if (guid_val) {
+ /* there is a GUID embedded in the DN */
+ enum ndr_err_code ndr_err;
+ ndr_err = ndr_pull_struct_blob(guid_val, ac, NULL, guid,
+ (ndr_pull_flags_fn_t)ndr_pull_GUID);
+ if (ndr_err != NDR_ERR_SUCCESS) {
+ DEBUG(0,(__location__ ": Failed to parse GUID\n"));
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ } else {
+ 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 *name)
{
+ 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;
}
os = talloc_zero(ac, struct la_op_store);
if (!os) {
- ldb_oom(ac->module->ldb);
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
os->op = op;
- os->dn = talloc_steal(os, op_dn);
+ ret = la_guid_from_dn(ac, op_dn, &os->guid);
+ 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) {
- ldb_oom(ac->module->ldb);
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
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);
/* 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);
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;
}
}
if ((schema_attr->linkID & 1) == 1) {
- /* Odd is for the target. Illigal to modify */
- ldb_asprintf_errstring(module->ldb,
+ /* 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;
}
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;
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(ac->module->ldb,
+ 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);
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);
if (ac->req->operation == LDB_ADD) {
/* Start the modifies to the backlinks */
- ret = la_do_mod_request(ac);
+ ret = la_queue_mod_request(ac);
if (ret != LDB_SUCCESS) {
return ldb_module_done(ac->req, NULL, NULL,
/* 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;
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->rc = talloc_zero(ac, struct replace_context);
if (!ac->rc) {
- ldb_oom(module->ldb);
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
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;
}
if ((schema_attr->linkID & 1) == 1) {
/* Odd is for the target. Illegal to modify */
- ldb_asprintf_errstring(module->ldb,
+ ldb_asprintf_errstring(ldb,
"attribute %s must not be modified directly, it is a linked attribute", el->name);
return LDB_ERR_UNWILLING_TO_PERFORM;
}
struct ldb_message_element,
ac->rc->num_elements +1);
if (!search_el) {
- ldb_oom(module->ldb);
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
ac->rc->el = search_el;
attrs = talloc_array(ac->rc, const char *, ac->rc->num_elements + 1);
if (!attrs) {
- ldb_oom(module->ldb);
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
for (i = 0; ac->rc && i < ac->rc->num_elements; i++) {
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,
return ret;
}
-/* delete, rename */
+/* delete */
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;
- Regain our sainity
*/
+ ldb = ldb_module_get_ctx(module);
+
ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
return LDB_ERR_OPERATIONS_ERROR;
}
- ret = ldb_build_search_req(&search_req, module->ldb, req,
+ ret = ldb_build_search_req(&search_req, ldb, req,
req->op.del.dn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
NULL,
return ldb_next_request(module, search_req);
}
-/* delete, rename */
+/* rename */
static int linked_attributes_rename(struct ldb_module *module, struct ldb_request *req)
{
struct la_context *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;
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,
break;
default:
talloc_free(ares);
- ldb_set_errstring(ac->module->ldb,
+ ldb_set_errstring(ldb,
"operations must be delete or rename");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
schema_attr = dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
- ldb_asprintf_errstring(ac->module->ldb,
+ ldb_asprintf_errstring(ldb,
"attribute %s is not a valid attribute"
" in schema", el->name);
talloc_free(ares);
if (ret != LDB_SUCCESS) {
return ldb_module_done(ac->req, NULL, NULL, ret);
}
- break;
- case LDB_RENAME:
-
- ret = la_do_mod_request(ac);
+ return ret;
+
+ case LDB_RENAME:
+ /* start the mod requests chain */
+ ret = la_queue_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(ac->module->ldb,
+ ldb_set_errstring(ldb,
"operations must be delete or rename");
return ldb_module_done(ac->req, NULL, NULL,
LDB_ERR_OPERATIONS_ERROR);
}
- return LDB_SUCCESS;
}
talloc_free(ares);
return LDB_SUCCESS;
}
-/* do a linked attributes modify request */
-static int la_do_mod_request(struct la_context *ac)
+/* queue a linked attributes modify request in the la_private
+ structure */
+static int la_queue_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 = ac->module->ldb;
+ struct la_private *la_private =
+ talloc_get_type(ldb_module_get_private(ac->module), struct la_private);
- /* 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);
+ if (la_private == NULL) {
+ ldb_debug(ldb_module_get_ctx(ac->module), LDB_DEBUG_ERROR, __location__ ": No la_private transaction setup\n");
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(ac->module->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 la_op_store *os;
-
- ac = talloc_get_type(req->context, struct la_context);
-
- 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(ac->module->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);
+ talloc_steal(la_private, ac);
+ DLIST_ADD(la_private->la_list, ac);
- return la_do_mod_request(ac);
+ return ldb_module_done(ac->req, ac->op_controls,
+ ac->op_response, LDB_SUCCESS);
}
/* Having done the original operation, then try to fix up all the linked attributes for modify and delete */
{
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,
}
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,
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);
+ ret = la_queue_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 */
+ /* la_queue_mod_request has already sent the callbacks */
return LDB_SUCCESS;
}
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,
}
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,
return LDB_ERR_OPERATIONS_ERROR;
}
- ret = ldb_build_search_req(&search_req, ac->module->ldb, req,
+ ret = ldb_build_search_req(&search_req, ldb, req,
ac->req->op.rename.newdn, LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
NULL,
{
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,
}
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,
/* 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, ac->module->ldb, ac,
+ ret = ldb_build_search_req(&search_req, ldb, ac,
ac->req->op.add.message->dn,
LDB_SCOPE_BASE,
"(objectClass=*)", attrs,
{
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, ac->module->ldb, ac,
+ 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, ac->module->ldb, ac,
+ 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, ac->module->ldb, ac,
+ 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, ac->module->ldb, ac,
+ ret = ldb_build_rename_req(&down_req, ldb, ac,
ac->req->op.rename.olddn,
ac->req->op.rename.newdn,
ac->req->controls,
return ldb_next_request(ac->module, down_req);
}
+/*
+ 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)
+{
+ return dsdb_find_dn_by_guid(ldb_module_get_ctx(ac->module), ac, GUID_string(ac, guid), dn);
+}
+
+/* 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_request *mod_req;
+ struct ldb_message *new_msg;
+ struct ldb_context *ldb;
+ int ret;
+
+ 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;
+ }
+
+ ret = la_find_dn_target(module, ac, &op->guid, &new_msg->dn);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ 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) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ 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
+
+ ret = ldb_build_mod_req(&mod_req, ldb, op,
+ new_msg,
+ NULL,
+ NULL,
+ ldb_op_default_callback,
+ NULL);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ talloc_steal(mod_req, new_msg);
+
+ if (DEBUGLVL(4)) {
+ DEBUG(4,("Applying linked attribute change:\n%s\n",
+ ldb_ldif_message_string(ldb, op, LDB_CHANGETYPE_MODIFY, new_msg)));
+ }
+
+ /* Run the new request */
+ ret = ldb_next_request(module, mod_req);
+
+ /* we need to wait for this to finish, as we are being called
+ from the synchronous end_transaction hook of this module */
+ if (ret == LDB_SUCCESS) {
+ ret = ldb_wait(mod_req->handle, LDB_WAIT_ALL);
+ }
+
+ if (ret != LDB_SUCCESS) {
+ ldb_debug(ldb, LDB_DEBUG_WARNING, "Failed to apply linked attribute change '%s' %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_ERR_OPERATIONS_ERROR;
+ }
+ la_private->la_list = NULL;
+ ldb_module_set_private(module, la_private);
+ return ldb_next_start_trans(module);
+}
+
+/*
+ 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 */
+ for (ac = la_private->la_list; ac && ac->next; ac=ac->next) ;
+
+ for (; ac; ac=ac->prev) {
+ 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",
.modify = linked_attributes_modify,
.del = linked_attributes_del,
.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 / ira / wip.git / blobdiff