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authorAndrew Tridgell <tridge@samba.org>2009-12-17 23:02:08 +1100
committerAndrew Tridgell <tridge@samba.org>2010-01-02 08:16:49 +1100
commit5eefff915e0c49cbdbecd764b8e0a2cc15d10d93 (patch)
tree1c9b3c4c695ac990162d2bf52975e2cc115a80e6 /source4/dsdb/samdb
parente9699e9cb9c2a5dc43a85c3d1565e12e0e299038 (diff)
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s4-dsdb: simplify the linked_attributes module
The linked_attributes module only has to deal with renames now, as other linked attribute updates happen in repl_meta_data. This allows it to be much simpler. Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
Diffstat (limited to 'source4/dsdb/samdb')
-rw-r--r--source4/dsdb/samdb/ldb_modules/linked_attributes.c949
1 files changed, 96 insertions, 853 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/linked_attributes.c b/source4/dsdb/samdb/ldb_modules/linked_attributes.c
index 2ea5024431..edcb2d8167 100644
--- a/source4/dsdb/samdb/ldb_modules/linked_attributes.c
+++ b/source4/dsdb/samdb/ldb_modules/linked_attributes.c
@@ -33,905 +33,148 @@
#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 GUID guid;
- char *name;
- char *value;
-};
-
-struct replace_context {
- struct la_context *ac;
- unsigned int num_elements;
- struct ldb_message_element *el;
-};
-
-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 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(ldb);
- return NULL;
- }
-
- 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)
-{
- int ret;
- NTSTATUS status;
-
- status = dsdb_get_extended_dn_guid(dn, guid);
- if (NT_STATUS_IS_OK(status)) {
- return LDB_SUCCESS;
- }
- if (!NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
- DEBUG(4,(__location__ ": Unable to parse GUID for dn %s\n",
- ldb_dn_get_linearized(dn)));
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- 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;
-}
+#include "dsdb/samdb/ldb_modules/util.h"
-/* 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)
+static int linked_attributes_fix_links(struct ldb_module *module,
+ struct ldb_dn *old_dn, struct ldb_dn *new_dn,
+ struct ldb_message_element *el, struct dsdb_schema *schema,
+ const struct dsdb_attribute *schema_attr)
{
- struct ldb_context *ldb;
- struct la_op_store *os;
- struct ldb_dn *op_dn;
- int ret;
+ int i;
+ TALLOC_CTX *tmp_ctx = talloc_new(module);
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ const struct dsdb_attribute *target;
+ const char *attrs[2];
- 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;
-
- 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);
+ target = dsdb_attribute_by_linkID(schema, schema_attr->linkID ^ 1);
+ if (target == NULL) {
+ /* there is no counterpart link to change */
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);
+ attrs[0] = target->lDAPDisplayName;
+ attrs[1] = NULL;
+ for (i=0; i<el->num_values; i++) {
+ struct dsdb_dn *dsdb_dn;
+ int ret, j;
+ struct ldb_result *res;
+ struct ldb_message *msg;
+ struct ldb_message_element *el2;
-
-
-/* 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);
+ dsdb_dn = dsdb_dn_parse(tmp_ctx, ldb, &el->values[i], schema_attr->syntax->ldap_oid);
+ if (dsdb_dn == NULL) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_INVALID_DN_SYNTAX;
}
- 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_queue_mod_request(ac);
-
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL,
- ret);
- }
- } else {
- /* Start with the original request */
- ret = la_down_req(ac);
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
- }
- }
- return LDB_SUCCESS;
- }
-
- talloc_free(ares);
- return ret;
-}
-
-
-
-
-/* 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;
+ ret = dsdb_module_search_dn(module, tmp_ctx, &res, dsdb_dn->dn,
+ attrs,
+ DSDB_SEARCH_SHOW_DELETED |
+ DSDB_SEARCH_SHOW_DN_IN_STORAGE_FORMAT);
+ if (ret != LDB_SUCCESS) {
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - remote not found - %s",
+ el->name, target->lDAPDisplayName,
+ ldb_dn_get_linearized(old_dn),
+ ldb_dn_get_linearized(dsdb_dn->dn),
+ ldb_errstring(ldb));
+ talloc_free(tmp_ctx);
+ return ret;
}
+ msg = res->msgs[0];
- 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);
+ if (msg->num_elements != 1 ||
+ ldb_attr_cmp(msg->elements[0].name, target->lDAPDisplayName) != 0) {
+ ldb_set_errstring(ldb, "Bad msg elements in linked_attributes_fix_links");
+ talloc_free(tmp_ctx);
+ return LDB_ERR_OPERATIONS_ERROR;
}
+ el2 = &msg->elements[0];
- for (i = 0; i < ares->message->num_elements; i++) {
- el = &ares->message->elements[i];
+ el2->flags = LDB_FLAG_MOD_REPLACE;
- 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);
+ /* find our DN in the values */
+ for (j=0; j<el2->num_values; j++) {
+ struct dsdb_dn *dsdb_dn2;
+ dsdb_dn2 = dsdb_dn_parse(msg, ldb, &el2->values[j], target->syntax->ldap_oid);
+ if (dsdb_dn2 == NULL) {
+ talloc_free(tmp_ctx);
+ return LDB_ERR_INVALID_DN_SYNTAX;
}
-
- /* Valid attribute, now find out if it is linked */
- if (schema_attr->linkID == 0) {
- /* Not a linked attribute, skip */
+ if (ldb_dn_compare(old_dn, dsdb_dn2->dn) != 0) {
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);
+ ret = ldb_dn_update_components(dsdb_dn2->dn, new_dn);
if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
+ talloc_free(tmp_ctx);
+ return 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);
+ el2->values[j] = data_blob_string_const(
+ dsdb_dn_get_extended_linearized(el2->values, dsdb_dn2, 1));
}
- }
-
- talloc_free(ares);
- return LDB_SUCCESS;
-}
-
-/* queue a linked attributes modify request in the la_private
- structure */
-static int la_queue_mod_request(struct la_context *ac)
-{
- struct la_private *la_private =
- talloc_get_type(ldb_module_get_private(ac->module), struct la_private);
-
- if (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;
- }
-
- talloc_steal(la_private, ac);
- DLIST_ADD(la_private->la_list, ac);
-
- return ldb_module_done(ac->req, ac->op_controls,
- ac->op_response, LDB_SUCCESS);
-}
-
-/* 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_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;
-
-}
-
-/* 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);
- }
+ ret = dsdb_module_modify(module, msg, 0);
if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL,
- ret);
+ ldb_asprintf_errstring(ldb, "Linked attribute %s->%s between %s and %s - update failed - %s",
+ el->name, target->lDAPDisplayName,
+ ldb_dn_get_linearized(old_dn),
+ ldb_dn_get_linearized(dsdb_dn->dn),
+ ldb_errstring(ldb));
+ talloc_free(tmp_ctx);
+ return ret;
}
-
- 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);
+ talloc_free(tmp_ctx);
+ return LDB_SUCCESS;
}
-/*
- 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)
+/* rename */
+static int linked_attributes_rename(struct ldb_module *module, struct ldb_request *req)
{
- 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);
+ struct ldb_result *res;
+ struct ldb_message *msg;
+ int ret, i;
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ struct dsdb_schema *schema = dsdb_get_schema(ldb);
+ /*
+ - load the current msg
+ - find any linked attributes
+ - if its a link then find the target object
+ - modify the target linked attributes with the new DN
+ */
+ ret = dsdb_module_search_dn(module, req, &res, req->op.rename.olddn,
+ NULL, DSDB_SEARCH_SHOW_DELETED);
if (ret != LDB_SUCCESS) {
return ret;
}
- 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);
- }
+ msg = res->msgs[0];
- 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;
- }
+ for (i=0; i<msg->num_elements; i++) {
+ struct ldb_message_element *el = &msg->elements[i];
+ const struct dsdb_attribute *schema_attr
+ = dsdb_attribute_by_lDAPDisplayName(schema, el->name);
+ if (!schema_attr || schema_attr->linkID == 0) {
+ continue;
}
- }
-
- 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);
+ ret = linked_attributes_fix_links(module, msg->dn, req->op.rename.newdn, el,
+ schema, schema_attr);
if (ret != LDB_SUCCESS) {
- DEBUG(0,(__location__ ": Failed mod request ret=%d\n", ret));
- talloc_free(la_private);
- ldb_module_set_private(module, NULL);
+ talloc_free(res);
return ret;
}
}
- talloc_free(la_private);
- ldb_module_set_private(module, NULL);
+ talloc_free(res);
- 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);
+ return ldb_next_request(module, req);
}
_PUBLIC_ const struct ldb_module_ops ldb_linked_attributes_module_ops = {
.name = "linked_attributes",
- .start_transaction = linked_attributes_start_transaction,
- .prepare_commit = linked_attributes_prepare_commit,
- .del_transaction = linked_attributes_del_transaction,
+ .rename = linked_attributes_rename,
};