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
*/
#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 "dlinklist.h"
#include "dsdb/samdb/samdb.h"
+#include "librpc/gen_ndr/ndr_misc.h"
-struct linked_attributes_context {
- enum la_step {LA_SEARCH, LA_DO_OPS, LA_DO_ORIG} step;
- struct ldb_module *module;
- struct ldb_handle *handle;
- struct ldb_request *orig_req;
-
- struct ldb_request *search_req;
- struct ldb_request **down_req;
- struct ldb_request *orig_down_req;
-
- int num_requests;
- int finished_requests;
+struct la_private {
+ struct la_context *la_list;
+};
- const char **linked_attrs;
+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 GUID guid;
+ char *name;
+ char *value;
};
struct replace_context {
- struct linked_attributes_context *ac;
+ struct la_context *ac;
+ unsigned int num_elements;
struct ldb_message_element *el;
};
-static int linked_attributes_rename_del_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares);
+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;
+ struct la_op_store *ops;
+ struct ldb_extended *op_response;
+ struct ldb_control **op_controls;
+};
-static struct linked_attributes_context *linked_attributes_init_handle(struct ldb_request *req,
- struct ldb_module *module)
+static struct la_context *linked_attributes_init(struct ldb_module *module,
+ struct ldb_request *req)
{
- struct linked_attributes_context *ac;
- struct ldb_handle *h;
-
- h = talloc_zero(req, struct ldb_handle);
- if (h == NULL) {
- ldb_set_errstring(module->ldb, "Out of Memory");
- return NULL;
- }
+ struct ldb_context *ldb;
+ struct la_context *ac;
+ const struct ldb_control *partition_ctrl;
- h->module = module;
+ ldb = ldb_module_get_ctx(module);
- ac = talloc_zero(h, struct linked_attributes_context);
+ ac = talloc_zero(req, struct la_context);
if (ac == NULL) {
- ldb_set_errstring(module->ldb, "Out of Memory");
- talloc_free(h);
+ ldb_oom(ldb);
return NULL;
}
- h->private_data = ac;
-
+ ac->schema = dsdb_get_schema(ldb);
ac->module = module;
- ac->handle = h;
- ac->orig_req = req;
+ 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->orig_down_req = talloc(ac, struct ldb_request);
- if (!ac->orig_down_req) {
- ldb_oom(ac->module->ldb);
- return NULL;
+ ac->partition_dn = ldb_dn_copy(ac, partition->dn);
}
- *ac->orig_down_req = *req;
+ return ac;
+}
- req->handle = h;
+/*
+ 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;
- return ac;
+ 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 setup_modifies(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
- struct linked_attributes_context *ac,
- const struct ldb_message *msg,
- struct ldb_dn *olddn, struct ldb_dn *newdn)
+static int la_store_op(struct la_context *ac,
+ enum la_op op, struct ldb_val *dn,
+ const char *name)
{
- int i, j, ret = LDB_SUCCESS;
- const struct dsdb_schema *schema = dsdb_get_schema(ldb);
- /* Look up each of the returned attributes */
- /* Find their schema */
- /* And it is an actual entry: now create a series of modify requests */
- for (i=0; i < msg->num_elements; i++) {
- int otherid;
- const struct dsdb_attribute *target_attr;
- const struct ldb_message_element *el = &msg->elements[i];
- const struct dsdb_attribute *schema_attr
- = dsdb_attribute_by_lDAPDisplayName(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, but if it's not linked they maybe we just got an extra return on our search... */
- if (schema_attr->linkID == 0) {
- continue;
- }
-
- /* Depending on which direction this link is in, we need to find it's partner */
- if ((schema_attr->linkID & 1) == 1) {
- otherid = schema_attr->linkID - 1;
- } else {
- otherid = schema_attr->linkID + 1;
- }
-
- /* Now find the target attribute */
- target_attr = dsdb_attribute_by_linkID(schema, otherid);
- if (!target_attr) {
- ldb_asprintf_errstring(ldb,
- "attribute %s does not have valid link target", el->name);
- return LDB_ERR_OBJECT_CLASS_VIOLATION;
- }
-
- /* For each value being moded, we need to setup the modify */
- for (j=0; j < el->num_values; j++) {
- struct ldb_message_element *ret_el;
- struct ldb_request *new_req;
- struct ldb_message *new_msg;
-
- /* Create a spot in the list for the requests */
- ac->down_req = talloc_realloc(ac, ac->down_req,
- struct ldb_request *, ac->num_requests + 1);
- if (!ac->down_req) {
- ldb_oom(ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ struct ldb_context *ldb;
+ struct la_op_store *os;
+ struct ldb_dn *op_dn;
+ int ret;
- /* Create the modify request */
- new_msg = ldb_msg_new(ac->down_req);
- if (!new_msg) {
- ldb_oom(ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- new_msg->dn = ldb_dn_new(new_msg, ldb, (char *)el->values[j].data);
- if (!new_msg->dn) {
- ldb_asprintf_errstring(ldb,
- "attribute %s value %s was not a valid DN", msg->elements[i].name,
- el->values[j].data);
- return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
- }
-
- if (olddn) {
- ret = ldb_msg_add_empty(new_msg, target_attr->lDAPDisplayName,
- 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->values[0] = data_blob_string_const(ldb_dn_get_linearized(olddn));
- ret_el->num_values = 1;
- }
-
- if (newdn) {
- ret = ldb_msg_add_empty(new_msg, target_attr->lDAPDisplayName,
- LDB_FLAG_MOD_ADD, &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->values[0] = data_blob_string_const(ldb_dn_get_linearized(newdn));
- ret_el->num_values = 1;
- }
+ ldb = ldb_module_get_ctx(ac->module);
- ret = ldb_build_mod_req(&new_req, ldb, ac->down_req,
- new_msg,
- NULL,
- NULL,
- NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
-
- talloc_steal(new_req, new_msg);
-
- ldb_set_timeout_from_prev_req(ldb, ac->orig_req, new_req);
-
- ac->down_req[ac->num_requests] = new_req;
- ac->num_requests++;
-
+ 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;
+ }
- /* Run the new request */
- ret = ldb_next_request(ac->module, new_req);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
- }
+ os = talloc_zero(ac, struct la_op_store);
+ if (!os) {
+ ldb_oom(ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
}
- return ret;
+
+ os->op = op;
+
+ 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(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_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)
{
- int i;
- struct linked_attributes_context *ac;
+ struct ldb_context *ldb;
+ const struct dsdb_attribute *target_attr;
+ struct la_context *ac;
+ const char *attr_name;
+ int ret;
+ int i, j;
- const struct dsdb_schema *schema = dsdb_get_schema(module->ldb);
- if (!schema) {
- /* without schema, this doesn't make any sense */
- return ldb_next_request(module, req);
- }
+ ldb = ldb_module_get_ctx(module);
- if (ldb_dn_is_special(req->op.mod.message->dn)) {
+ 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_handle(req, module);
+ ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
-
- ac->step = LA_DO_OPS;
-
+
+ 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(schema, el->name);
+ = dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
- ldb_asprintf_errstring(module->ldb,
- "attribute %s is not a valid attribute in schema", req->op.add.message->elements[i].name);
+ 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, not find out if it is linked */
+ /* 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(module->ldb,
- "attribute %s must not be modified directly, it is a linked attribute", req->op.add.message->elements[i].name);
+ /* 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 call the common routine to setup the modifies across all the attributes */
- return setup_modifies(module->ldb, ac, ac, req->op.add.message, NULL, req->op.add.message->dn);
-}
+ 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;
+ }
-struct merge {
- struct ldb_dn *dn;
- bool add;
- bool ignore;
-};
+ attr_name = target_attr->lDAPDisplayName;
-static int merge_cmp(struct merge *merge1, struct merge *merge2) {
- int ret;
- ret = ldb_dn_compare(merge1->dn, merge2->dn);
- if (ret == 0) {
- if (merge1->add == merge2->add) {
- return 0;
- }
- if (merge1->add == true) {
- return 1;
+ 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;
+ }
}
- return -1;
}
- 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);
}
-static int linked_attributes_mod_replace_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+/* 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 replace_context *ac2 = talloc_get_type(context, struct replace_context);
- struct linked_attributes_context *ac = ac2->ac;
-
- /* OK, we have one search result here: */
+ 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 */
- if (ares->type == LDB_REPLY_ENTRY
- && ldb_dn_compare(ares->message->dn, ac->orig_req->op.mod.message->dn) == 0) {
- /* only bother at all if there were some linked attributes found */
- struct ldb_message_element *search_el
- = ldb_msg_find_element(ares->message,
- ac2->el->name);
-
- /* See if this element already exists */
- if (search_el) {
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
- struct merge *merged_list = NULL;
+ 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);
+ }
- int ret, size = 0, i;
- struct ldb_message *msg = ldb_msg_new(ac);
- if (!msg) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ ac->add_dn = ac->del_dn = talloc_steal(ac, ares->message->dn);
- /* Add all the existing elements, marking as 'proposed for delete' by setting .add = false */
- for (i=0; i < search_el->num_values; i++) {
- merged_list = talloc_realloc(ares, merged_list, struct merge, size + 1);
- merged_list[size].dn = ldb_dn_new(merged_list, ldb, (char *)search_el->values[i].data);
- merged_list[size].add = false;
- merged_list[size].ignore = false;
- size++;
- }
+ /* We don't populate 'rc' for ADD - it can't be deleting elements anyway */
+ for (i = 0; rc && i < rc->num_elements; i++) {
- /* Add all the new replacement elements, marking as 'proposed for add' by setting .add = true */
- for (i=0; i < ac2->el->num_values; i++) {
- merged_list = talloc_realloc(ares, merged_list, struct merge, size + 1);
- merged_list[size].dn = ldb_dn_new(merged_list, ldb, (char *)ac2->el->values[i].data);
- merged_list[size].add = true;
- merged_list[size].ignore = false;
- size++;
+ 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);
}
- /* Sort the list, so we can pick out an add and delete for the same DN, and eliminate them */
- qsort(merged_list, size,
- sizeof(*merged_list),
- (comparison_fn_t)merge_cmp);
-
- /* Now things are sorted, it is trivial to mark pairs of DNs as 'ignore' */
- for (i=0; i + 1 < size; i++) {
- if (ldb_dn_compare(merged_list[i].dn,
- merged_list[i+1].dn) == 0
- /* Fortunetly the sort also sorts 'add == false' first */
- && merged_list[i].add == false
- && merged_list[i+1].add == true) {
-
- /* Mark as ignore, so we include neither in the actual operations */
- merged_list[i].ignore = true;
- merged_list[i+1].ignore = true;
- }
- }
+ search_el = ldb_msg_find_element(ares->message,
+ rc->el[i].name);
- /* Arrange to delete anything the search found that we don't re-add */
- for (i=0; i < size; i++) {
- if (merged_list[i].ignore == false
- && merged_list[i].add == false) {
- ldb_msg_add_steal_string(msg, search_el->name,
- ldb_dn_get_linearized(merged_list[i].dn));
- }
+ /* See if this element already exists */
+ /* otherwise just ignore as
+ * the add has already been scheduled */
+ if ( ! search_el) {
+ continue;
}
- /* The DN to set on the linked attributes is the original DN of the modify message */
- msg->dn = ac->orig_req->op.mod.message->dn;
-
- ret = setup_modifies(ac->module->ldb, ac2, ac, msg, ares->message->dn, NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
+ 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 add links for all the actually new elements */
- for (i=0; i < size; i++) {
- if (merged_list[i].ignore == false && merged_list[i].add == true) {
- ldb_msg_add_steal_string(msg, search_el->name,
- ldb_dn_get_linearized(merged_list[i].dn));
+ /* 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_queue_mod_request(ac);
- ret = setup_modifies(ac->module->ldb, ac2, ac, msg, NULL, ares->message->dn);
if (ret != LDB_SUCCESS) {
- return ret;
+ return ldb_module_done(ac->req, NULL, NULL,
+ ret);
}
-
- talloc_free(merged_list);
-
} else {
- /* Looks like it doesn't exist, process like an 'add' */
- struct ldb_message *msg = ldb_msg_new(ac);
- if (!msg) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ /* Start with the original request */
+ ret = la_down_req(ac);
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
- msg->num_elements = 1;
- msg->elements = ac2->el;
- msg->dn = ac->orig_req->op.mod.message->dn;
-
- return setup_modifies(ac->module->ldb, ac2, ac, msg, NULL, ac->orig_req->op.mod.message->dn);
}
- talloc_free(ares);
- return LDB_SUCCESS;
- } else if (ares->type == LDB_REPLY_ENTRY) {
- /* Guh? We only asked for this DN */
- return LDB_ERR_OPERATIONS_ERROR;
-
- } else {
- talloc_free(ares);
return LDB_SUCCESS;
}
-
-
+
+ talloc_free(ares);
+ return ret;
}
+
+
/* modify */
static int linked_attributes_modify(struct ldb_module *module, struct ldb_request *req)
{
/* Determine the effect of the modification */
/* Apply the modify to the linked entry */
+ struct ldb_context *ldb;
int i, j;
- struct linked_attributes_context *ac;
+ struct la_context *ac;
+ struct ldb_request *search_req;
+ const char **attrs;
- const struct dsdb_schema *schema = dsdb_get_schema(module->ldb);
- if (!schema) {
- /* without schema, this doesn't make any sense */
- return ldb_next_request(module, 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 = linked_attributes_init_handle(req, module);
+ ac = linked_attributes_init(module, req);
if (!ac) {
return LDB_ERR_OPERATIONS_ERROR;
}
-
- /* prepare the first operation */
- ac->step = LA_DO_OPS;
+
+ 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++) {
- int ret;
- struct ldb_request *new_req;
+ 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(schema, el->name);
+ = dsdb_attribute_by_lDAPDisplayName(ac->schema, el->name);
if (!schema_attr) {
- ldb_asprintf_errstring(module->ldb,
- "attribute %s is not a valid attribute in schema", req->op.mod.message->elements[i].name);
+ 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, not find out if it is linked */
+ /* 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(module->ldb,
- "attribute %s must not be modified directly, it is a linked attribute", req->op.mod.message->elements[i].name);
+ /* 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(schema, schema_attr->linkID + 1);
+ target_attr = dsdb_attribute_by_linkID(ac->schema, schema_attr->linkID + 1);
if (!target_attr) {
- ldb_asprintf_errstring(module->ldb,
- "attribute %s does not have valid link target", req->op.mod.message->elements[i].name);
- return LDB_ERR_OBJECT_CLASS_VIOLATION;
+ /*
+ * 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;
}
- /* Replace with new set of values */
- if (((el->flags & LDB_FLAG_MOD_MASK) == LDB_FLAG_MOD_REPLACE)
- && el->num_values > 0) {
- struct replace_context *ac2 = talloc(ac, struct replace_context);
- const char **attrs = talloc_array(ac, const char *, 2);
- if (!attrs || !ac2) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- attrs[0] = el->name;
- attrs[1] = NULL;
-
- ac2->ac = ac;
- ac2->el = el;
+ 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;
- /* We need to setup a search, compare with the list, and then setup add/del as required */
-
- /* The callback does all the hard work here */
- ret = ldb_build_search_req(&new_req, module->ldb, req,
- req->op.mod.message->dn,
- LDB_SCOPE_BASE,
- "(objectClass=*)",
- attrs,
- NULL,
- ac2,
- linked_attributes_mod_replace_search_callback);
-
- if (ret != LDB_SUCCESS) {
- return ret;
- }
-
- talloc_steal(new_req, attrs);
-
- /* Create a spot in the list for the requests */
- ac->down_req = talloc_realloc(ac, ac->down_req,
- struct ldb_request *, ac->num_requests + 1);
- if (!ac->down_req) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ /* break intentionally missing */
- ac->down_req[ac->num_requests] = talloc_steal(ac->down_req, new_req);
- ac->num_requests++;
+ case LDB_FLAG_MOD_ADD:
- ret = ldb_next_request(module, new_req);
-
- if (ret != LDB_SUCCESS) {
- return ret;
+ /* 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;
+ }
}
-
- continue;
-
- /* Delete all values case */
- } else if (((el->flags & LDB_FLAG_MOD_MASK) & (LDB_FLAG_MOD_DELETE|LDB_FLAG_MOD_REPLACE))
- && el->num_values == 0) {
- const char **attrs = talloc_array(ac, const char *, 2);
- if (!attrs) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+ 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;
}
- attrs[0] = el->name;
- attrs[1] = NULL;
- /* We need to setup a search, and then setup del as required */
-
- /* The callback does all the hard work here, acting identically to if we had delted the whole entry */
- ret = ldb_build_search_req(&new_req, module->ldb, req,
- req->op.mod.message->dn,
- LDB_SCOPE_BASE,
- "(objectClass=*)",
- attrs,
- NULL,
- ac,
- linked_attributes_rename_del_search_callback);
+ break;
+ }
- if (ret != LDB_SUCCESS) {
- return ret;
- }
-
- talloc_steal(new_req, attrs);
-
- /* Create a spot in the list for the requests */
- ac->down_req = talloc_realloc(ac, ac->down_req,
- struct ldb_request *, ac->num_requests + 1);
- if (!ac->down_req) {
- ldb_oom(ac->module->ldb);
+ 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->down_req[ac->num_requests] = talloc_steal(ac->down_req, new_req);
- ac->num_requests++;
-
- ret = ldb_next_request(module, new_req);
+ 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 */
- if (ret != LDB_SUCCESS) {
- return ret;
- }
+ 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);
- continue;
+ ret = ldb_next_request(module, search_req);
}
- /* Prepare the modify (mod element) on the targets, for a normal modify request */
+ } else {
+ /* nothing to do for this module, proceed */
+ talloc_free(ac);
+ ret = ldb_next_request(module, req);
+ }
- /* For each value being moded, we need to setup the modify */
- for (j=0; j < el->num_values; j++) {
- /* Create the modify request */
- struct ldb_message *new_msg = ldb_msg_new(ac);
- if (!new_msg) {
- ldb_oom(module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- new_msg->dn = ldb_dn_new(new_msg, module->ldb, (char *)el->values[j].data);
- if (!new_msg->dn) {
- ldb_asprintf_errstring(module->ldb,
- "attribute %s value %s was not a valid DN", req->op.mod.message->elements[i].name,
- el->values[j].data);
- return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
- }
+ return ret;
+}
- ret = ldb_msg_add_empty(new_msg, target_attr->lDAPDisplayName,
- el->flags & LDB_FLAG_MOD_MASK, NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
- }
-
- ret = ldb_msg_add_string(new_msg, target_attr->lDAPDisplayName,
- ldb_dn_get_linearized(ac->orig_req->op.add.message->dn));
- if (ret != LDB_SUCCESS) {
- return ret;
+/* 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;
+ 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);
+}
+
+/* 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);
}
- ret = ldb_build_mod_req(&new_req, module->ldb, ac,
- new_msg,
- NULL,
- NULL,
- NULL);
- if (ret != LDB_SUCCESS) {
- return ret;
+ /* Valid attribute, now find out if it is linked */
+ if (schema_attr->linkID == 0) {
+ /* Not a linked attribute, skip */
+ continue;
}
-
- talloc_steal(new_req, new_msg);
-
- ldb_set_timeout_from_prev_req(module->ldb, req, new_req);
-
- /* Now add it to the list */
- ac->down_req = talloc_realloc(ac, ac->down_req,
- struct ldb_request *, ac->num_requests + 1);
- if (!ac->down_req) {
- ldb_oom(ac->module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+
+ 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);
+ }
}
- ac->down_req[ac->num_requests] = talloc_steal(ac->down_req, new_req);
- ac->num_requests++;
+ }
+
+ break;
- /* Run the new request */
- ret = ldb_next_request(module, new_req);
+ 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 ret;
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
+ 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(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;
}
-static int linked_attributes_rename_del_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares)
+/* queue a linked attributes modify request in the la_private
+ structure */
+static int la_queue_mod_request(struct la_context *ac)
{
- struct linked_attributes_context *ac = talloc_get_type(context, struct linked_attributes_context);
- struct ldb_dn *olddn, *newdn;
-
- switch (ac->orig_req->operation) {
- case LDB_DELETE:
- {
- olddn = ac->orig_req->op.del.dn;
- newdn = NULL;
- break;
- }
- /* This isn't the general modify case, just the modify when we are asked to delete all values */
- case LDB_MODIFY:
- {
- olddn = ac->orig_req->op.mod.message->dn;
- newdn = NULL;
- break;
- }
- case LDB_RENAME:
- {
- olddn = ac->orig_req->op.rename.olddn;
- newdn = ac->orig_req->op.rename.newdn;
- break;
- }
- default:
+ struct la_private *la_private =
+ talloc_get_type(ldb_module_get_private(ac->module), struct la_private);
+
+ 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;
}
-
- /* OK, we have one search result here: */
+ talloc_steal(la_private, ac);
+ DLIST_ADD(la_private->la_list, ac);
- /* Only entries are interesting, and we only want the olddn */
- if (ares->type == LDB_REPLY_ENTRY
- && ldb_dn_compare(ares->message->dn, olddn) == 0) {
- /* only bother at all if there were some linked attributes found */
- if (ares->message->num_elements > 0) {
- return setup_modifies(ldb, ac, ac,
- ares->message, olddn, newdn);
- }
- talloc_free(ares);
- return LDB_SUCCESS;
- } else if (ares->type == LDB_REPLY_ENTRY) {
- /* Guh? We only asked for this DN */
- return LDB_ERR_OPERATIONS_ERROR;
+ return ldb_module_done(ac->req, ac->op_controls,
+ ac->op_response, LDB_SUCCESS);
+}
- } else {
+/* 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_SUCCESS;
+ 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_queue_mod_request(ac);
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
+ talloc_free(ares);
+
+ /* la_queue_mod_request has already sent the callbacks */
+ return LDB_SUCCESS;
+
}
-/* rename */
-static int linked_attributes_rename(struct ldb_module *module, struct ldb_request *req)
+
+/* 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)
{
- /* Look up list of linked attributes */
+ int ret;
+ struct la_context *ac;
+ struct ldb_request *search_req;
const char **attrs;
WERROR werr;
- int ret;
- struct linked_attributes_context *ac;
- struct ldb_request *new_req;
- const struct dsdb_schema *schema = dsdb_get_schema(module->ldb);
- if (!schema) {
- /* without schema, this doesn't make any sense */
- return ldb_next_request(module, req);
- }
+ struct ldb_context *ldb;
- /* 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 = talloc_get_type(req->context, struct la_context);
+ ldb = ldb_module_get_ctx(ac->module);
- ac = linked_attributes_init_handle(req, module);
- if (!ac) {
- return LDB_ERR_OPERATIONS_ERROR;
+ 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(schema, ac, &attrs);
+ 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(&new_req, module->ldb, req,
- req->op.rename.olddn,
- LDB_SCOPE_BASE,
- "(objectClass=*)",
- attrs,
- NULL,
- ac,
- linked_attributes_rename_del_search_callback);
-
+ 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);
- talloc_steal(new_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);
- ac->search_req = new_req;
- ac->step = LA_SEARCH;
- return ldb_next_request(module, new_req);
+ return ldb_next_request(ac->module, search_req);
}
-/* delete */
-static int linked_attributes_delete(struct ldb_module *module, struct ldb_request *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)
{
- /* Look up list of linked attributes */
- const char **attrs;
- WERROR werr;
int ret;
- struct ldb_request *new_req;
- struct linked_attributes_context *ac;
- const struct dsdb_schema *schema = dsdb_get_schema(module->ldb);
- if (!schema) {
- /* without schema, this doesn't make any sense */
- return ldb_next_request(module, req);
- }
+ struct la_context *ac;
+ struct ldb_context *ldb;
- /* 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 = talloc_get_type(req->context, struct la_context);
+ ldb = ldb_module_get_ctx(ac->module);
- ac = linked_attributes_init_handle(req, module);
- if (!ac) {
- return LDB_ERR_OPERATIONS_ERROR;
+ 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(schema, ac, &attrs);
- if (!W_ERROR_IS_OK(werr)) {
- return LDB_ERR_OPERATIONS_ERROR;
- };
-
- ret = ldb_build_search_req(&new_req, module->ldb, req,
- req->op.del.dn,
- LDB_SCOPE_BASE,
- "(objectClass=*)",
- attrs,
- NULL,
- ac,
- linked_attributes_rename_del_search_callback);
+ 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;
}
- talloc_steal(new_req, attrs);
+ return ldb_next_request(ac->module, down_req);
+}
- ac->search_req = new_req;
- ac->step = LA_SEARCH;
- return ldb_next_request(module, new_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);
-static int linked_attributes_wait_none(struct ldb_handle *handle) {
- struct linked_attributes_context *ac;
- int i, ret = LDB_ERR_OPERATIONS_ERROR;
- if (!handle || !handle->private_data) {
+ /* Create the modify request */
+ new_msg = ldb_msg_new(ac);
+ if (!new_msg) {
+ ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
- if (handle->state == LDB_ASYNC_DONE) {
- return handle->status;
+ ret = la_find_dn_target(module, ac, &op->guid, &new_msg->dn);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- handle->state = LDB_ASYNC_PENDING;
- handle->status = LDB_SUCCESS;
+ 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));
+ }
- ac = talloc_get_type(handle->private_data, struct linked_attributes_context);
+#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);
- switch (ac->step) {
- case LA_SEARCH:
- ret = ldb_wait(ac->search_req->handle, LDB_WAIT_NONE);
-
- if (ret != LDB_SUCCESS) {
- handle->status = ret;
- goto done;
- }
- if (ac->search_req->handle->status != LDB_SUCCESS) {
- handle->status = ac->search_req->handle->status;
- goto done;
- }
-
- if (ac->search_req->handle->state != LDB_ASYNC_DONE) {
- return LDB_SUCCESS;
- }
- ac->step = LA_DO_OPS;
- return LDB_SUCCESS;
+ if (DEBUGLVL(4)) {
+ DEBUG(4,("Applying linked attribute change:\n%s\n",
+ ldb_ldif_message_string(ldb, op, LDB_CHANGETYPE_MODIFY, new_msg)));
+ }
- case LA_DO_OPS:
- for (i=0; i < ac->num_requests; i++) {
- ret = ldb_wait(ac->down_req[i]->handle, LDB_WAIT_NONE);
-
- if (ret != LDB_SUCCESS) {
- handle->status = ret;
- goto done;
- }
- if (ac->down_req[i]->handle->status != LDB_SUCCESS) {
- handle->status = ac->down_req[i]->handle->status;
- goto done;
- }
-
- if (ac->down_req[i]->handle->state != LDB_ASYNC_DONE) {
- return LDB_SUCCESS;
- }
- }
+ /* Run the new request */
+ ret = ldb_next_request(module, mod_req);
- /* Now run the original request */
- ac->step = LA_DO_ORIG;
- return ldb_next_request(ac->module, ac->orig_down_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);
+ }
- case LA_DO_ORIG:
- ret = ldb_wait(ac->orig_down_req->handle, LDB_WAIT_NONE);
-
+ 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) {
- handle->status = ret;
- goto done;
- }
- if (ac->orig_down_req->handle->status != LDB_SUCCESS) {
- handle->status = ac->orig_down_req->handle->status;
- goto done;
- }
-
- if (ac->orig_down_req->handle->state != LDB_ASYNC_DONE) {
- return LDB_SUCCESS;
+ if (ret != LDB_ERR_NO_SUCH_OBJECT) {
+ return ret;
+ }
}
- ret = LDB_SUCCESS;
}
-done:
- handle->state = LDB_ASYNC_DONE;
- 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);
}
-static int linked_attributes_wait_all(struct ldb_handle *handle) {
+/*
+ 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;
- int ret;
+ 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) ;
- while (handle->state != LDB_ASYNC_DONE) {
- ret = linked_attributes_wait_none(handle);
+ 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;
}
}
- return handle->status;
+ talloc_free(la_private);
+ ldb_module_set_private(module, NULL);
+
+ return ldb_next_prepare_commit(module);
}
-static int linked_attributes_wait(struct ldb_handle *handle, enum ldb_wait_type type)
+static int linked_attributes_del_transaction(struct ldb_module *module)
{
- if (type == LDB_WAIT_ALL) {
- return linked_attributes_wait_all(handle);
- } else {
- return linked_attributes_wait_none(handle);
- }
+ 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);
}
-static const struct ldb_module_ops linked_attributes_ops = {
+
+_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_delete,
+ .del = linked_attributes_del,
.rename = linked_attributes_rename,
- .wait = linked_attributes_wait,
+ .start_transaction = linked_attributes_start_transaction,
+ .prepare_commit = linked_attributes_prepare_commit,
+ .del_transaction = linked_attributes_del_transaction,
};
-
-int ldb_linked_attributes_init(void)
-{
- return ldb_register_module(&linked_attributes_ops);
-}
git.samba.org / ira / wip.git / blobdiff