+++ /dev/null
-/*
- ldb database mapping module
-
- Copyright (C) Jelmer Vernooij 2005
- Copyright (C) Martin Kuehl <mkhl@samba.org> 2006
-
- * NOTICE: this module is NOT released under the GNU LGPL license as
- * other ldb code. This module is release under the GNU GPL v2 or
- * later license.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 3 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "includes.h"
-#include "ldb/include/includes.h"
-
-#include "ldb/modules/ldb_map.h"
-#include "ldb/modules/ldb_map_private.h"
-
-
-/* Mapping message elements
- * ======================== */
-
-/* Map a message element into the remote partition. */
-static struct ldb_message_element *ldb_msg_el_map_local(struct ldb_module *module, void *mem_ctx, const struct ldb_map_attribute *map, const struct ldb_message_element *old)
-{
- struct ldb_message_element *el;
- int i;
-
- el = talloc_zero(mem_ctx, struct ldb_message_element);
- if (el == NULL) {
- map_oom(module);
- return NULL;
- }
-
- el->num_values = old->num_values;
- el->values = talloc_array(el, struct ldb_val, el->num_values);
- if (el->values == NULL) {
- talloc_free(el);
- map_oom(module);
- return NULL;
- }
-
- el->name = map_attr_map_local(el, map, old->name);
-
- for (i = 0; i < el->num_values; i++) {
- el->values[i] = ldb_val_map_local(module, el->values, map, &old->values[i]);
- }
-
- return el;
-}
-
-/* Add a message element either to a local or to a remote message,
- * depending on whether it goes into the local or remote partition. */
-static int ldb_msg_el_partition(struct ldb_module *module, struct ldb_message *local, struct ldb_message *remote, const struct ldb_message *msg, const char *attr_name, /* const char * const names[], */ const struct ldb_message_element *old)
-{
- const struct ldb_map_context *data = map_get_context(module);
- const struct ldb_map_attribute *map = map_attr_find_local(data, attr_name);
- struct ldb_message_element *el=NULL;
-
- /* Unknown attribute: ignore */
- if (map == NULL) {
- ldb_debug(module->ldb, LDB_DEBUG_WARNING, "ldb_map: "
- "Not mapping attribute '%s': no mapping found\n",
- old->name);
- goto local;
- }
-
- switch (map->type) {
- case MAP_IGNORE:
- goto local;
-
- case MAP_CONVERT:
- if (map->u.convert.convert_local == NULL) {
- ldb_debug(module->ldb, LDB_DEBUG_WARNING, "ldb_map: "
- "Not mapping attribute '%s': "
- "'convert_local' not set\n",
- map->local_name);
- goto local;
- }
- /* fall through */
- case MAP_KEEP:
- case MAP_RENAME:
- el = ldb_msg_el_map_local(module, remote, map, old);
- break;
-
- case MAP_GENERATE:
- if (map->u.generate.generate_remote == NULL) {
- ldb_debug(module->ldb, LDB_DEBUG_WARNING, "ldb_map: "
- "Not mapping attribute '%s': "
- "'generate_remote' not set\n",
- map->local_name);
- goto local;
- }
-
- /* TODO: if this attr requires context:
- * make sure all context attrs are mappable (in 'names')
- * make sure all context attrs have already been mapped?
- * maybe postpone generation until they have been mapped?
- */
-
- map->u.generate.generate_remote(module, map->local_name, msg, remote, local);
- return 0;
- }
-
- if (el == NULL) {
- return -1;
- }
-
- return ldb_msg_add(remote, el, old->flags);
-
-local:
- el = talloc(local, struct ldb_message_element);
- if (el == NULL) {
- map_oom(module);
- return -1;
- }
-
- *el = *old; /* copy the old element */
-
- return ldb_msg_add(local, el, old->flags);
-}
-
-/* Mapping messages
- * ================ */
-
-/* Check whether a message will be (partially) mapped into the remote partition. */
-static BOOL ldb_msg_check_remote(struct ldb_module *module, const struct ldb_message *msg)
-{
- const struct ldb_map_context *data = map_get_context(module);
- BOOL ret;
- int i;
-
- for (i = 0; i < msg->num_elements; i++) {
- ret = map_attr_check_remote(data, msg->elements[i].name);
- if (ret) {
- return ret;
- }
- }
-
- return False;
-}
-
-/* Split message elements that stay in the local partition from those
- * that are mapped into the remote partition. */
-static int ldb_msg_partition(struct ldb_module *module, struct ldb_message *local, struct ldb_message *remote, const struct ldb_message *msg)
-{
- /* const char * const names[]; */
- int i, ret;
-
- for (i = 0; i < msg->num_elements; i++) {
- /* Skip 'IS_MAPPED' */
- if (ldb_attr_cmp(msg->elements[i].name, IS_MAPPED) == 0) {
- ldb_debug(module->ldb, LDB_DEBUG_WARNING, "ldb_map: "
- "Skipping attribute '%s'\n",
- msg->elements[i].name);
- continue;
- }
-
- ret = ldb_msg_el_partition(module, local, remote, msg, msg->elements[i].name, &msg->elements[i]);
- if (ret) {
- return ret;
- }
- }
-
- return 0;
-}
-
-
-/* Inbound requests: add, modify, rename, delete
- * ============================================= */
-
-/* Add the remote record. */
-int map_add_do_remote(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->remote_req);
-
- ac->step = MAP_ADD_REMOTE;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_remote_request(ac->module, ac->remote_req);
-}
-
-/* Add the local record. */
-int map_add_do_local(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->local_req);
-
- ac->step = MAP_ADD_LOCAL;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_request(ac->module, ac->local_req);
-}
-
-/* Add a record. */
-int map_add(struct ldb_module *module, struct ldb_request *req)
-{
- const struct ldb_message *msg = req->op.add.message;
- struct ldb_handle *h;
- struct map_context *ac;
- struct ldb_message *local, *remote;
- const char *dn;
-
- /* Do not manipulate our control entries */
- if (ldb_dn_is_special(msg->dn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping requested (perhaps no DN mapping specified), skip to next module */
- if (!ldb_dn_check_local(module, msg->dn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping needed, fail */
- if (!ldb_msg_check_remote(module, msg)) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- /* Prepare context and handle */
- h = map_init_handle(req, module);
- if (h == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ac = talloc_get_type(h->private_data, struct map_context);
-
- /* Prepare the local operation */
- ac->local_req = talloc(ac, struct ldb_request);
- if (ac->local_req == NULL) {
- goto oom;
- }
-
- *(ac->local_req) = *req; /* copy the request */
-
- ac->local_req->context = NULL;
- ac->local_req->callback = NULL;
-
- /* Prepare the remote operation */
- ac->remote_req = talloc(ac, struct ldb_request);
- if (ac->remote_req == NULL) {
- goto oom;
- }
-
- *(ac->remote_req) = *req; /* copy the request */
-
- ac->remote_req->context = NULL;
- ac->remote_req->callback = NULL;
-
- /* Prepare the local message */
- local = ldb_msg_new(ac->local_req);
- if (local == NULL) {
- goto oom;
- }
- local->dn = msg->dn;
-
- /* Prepare the remote message */
- remote = ldb_msg_new(ac->remote_req);
- if (remote == NULL) {
- goto oom;
- }
- remote->dn = ldb_dn_map_local(ac->module, remote, msg->dn);
-
- /* Split local from remote message */
- ldb_msg_partition(module, local, remote, msg);
- ac->local_req->op.add.message = local;
- ac->remote_req->op.add.message = remote;
-
- if ((local->num_elements == 0) || (!map_check_local_db(ac->module))) {
- /* No local data or db, just run the remote request */
- talloc_free(ac->local_req);
- req->handle = h; /* return our own handle to deal with this call */
- return map_add_do_remote(h);
- }
-
- /* Store remote DN in 'IS_MAPPED' */
- /* TODO: use GUIDs here instead */
- dn = ldb_dn_linearize(local, remote->dn);
- if (ldb_msg_add_string(local, IS_MAPPED, dn) != 0) {
- goto failed;
- }
-
- req->handle = h; /* return our own handle to deal with this call */
- return map_add_do_local(h);
-
-oom:
- map_oom(module);
-failed:
- talloc_free(h);
- return LDB_ERR_OPERATIONS_ERROR;
-}
-
-/* Modify the remote record. */
-int map_modify_do_remote(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->remote_req);
-
- ac->step = MAP_MODIFY_REMOTE;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_remote_request(ac->module, ac->remote_req);
-}
-
-/* Modify the local record. */
-int map_modify_do_local(struct ldb_handle *handle)
-{
- struct map_context *ac;
- struct ldb_message *msg;
- char *dn;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- if (ac->local_dn == NULL) {
- /* No local record present, add it instead */
- msg = discard_const_p(struct ldb_message, ac->local_req->op.mod.message);
-
- /* Add local 'IS_MAPPED' */
- /* TODO: use GUIDs here instead */
- dn = ldb_dn_linearize(msg, ac->remote_req->op.mod.message->dn);
- if (ldb_msg_add_empty(msg, IS_MAPPED, LDB_FLAG_MOD_ADD, NULL) != 0) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- if (ldb_msg_add_string(msg, IS_MAPPED, dn) != 0) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- /* Turn request into 'add' */
- ac->local_req->operation = LDB_ADD;
- ac->local_req->op.add.message = msg;
- /* TODO: Could I just leave msg in there? I think so,
- * but it looks clearer this way. */
- }
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->local_req);
-
- ac->step = MAP_MODIFY_LOCAL;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_request(ac->module, ac->local_req);
-}
-
-/* Modify a record. */
-int map_modify(struct ldb_module *module, struct ldb_request *req)
-{
- const struct ldb_message *msg = req->op.mod.message;
- struct ldb_handle *h;
- struct map_context *ac;
- struct ldb_message *local, *remote;
-
- /* Do not manipulate our control entries */
- if (ldb_dn_is_special(msg->dn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping requested (perhaps no DN mapping specified), skip to next module */
- if (!ldb_dn_check_local(module, msg->dn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping needed, skip to next module */
- /* TODO: What if the remote part exists, the local doesn't,
- * and this request wants to modify local data and thus
- * add the local record? */
- if (!ldb_msg_check_remote(module, msg)) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
-
- /* Prepare context and handle */
- h = map_init_handle(req, module);
- if (h == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ac = talloc_get_type(h->private_data, struct map_context);
-
- /* Prepare the local operation */
- ac->local_req = talloc(ac, struct ldb_request);
- if (ac->local_req == NULL) {
- goto oom;
- }
-
- *(ac->local_req) = *req; /* copy the request */
-
- ac->local_req->context = NULL;
- ac->local_req->callback = NULL;
-
- /* Prepare the remote operation */
- ac->remote_req = talloc(ac, struct ldb_request);
- if (ac->remote_req == NULL) {
- goto oom;
- }
-
- *(ac->remote_req) = *req; /* copy the request */
-
- ac->remote_req->context = NULL;
- ac->remote_req->callback = NULL;
-
- /* Prepare the local message */
- local = ldb_msg_new(ac->local_req);
- if (local == NULL) {
- goto oom;
- }
- local->dn = msg->dn;
-
- /* Prepare the remote message */
- remote = ldb_msg_new(ac->remote_req);
- if (remote == NULL) {
- goto oom;
- }
- remote->dn = ldb_dn_map_local(ac->module, remote, msg->dn);
-
- /* Split local from remote message */
- ldb_msg_partition(module, local, remote, msg);
- ac->local_req->op.mod.message = local;
- ac->remote_req->op.mod.message = remote;
-
- if ((local->num_elements == 0) || (!map_check_local_db(ac->module))) {
- /* No local data or db, just run the remote request */
- talloc_free(ac->local_req);
- req->handle = h; /* return our own handle to deal with this call */
- return map_modify_do_remote(h);
- }
-
- /* prepare the search operation */
- ac->search_req = map_search_self_req(ac, msg->dn);
- if (ac->search_req == NULL) {
- goto failed;
- }
-
- ac->step = MAP_SEARCH_SELF_MODIFY;
-
- req->handle = h; /* return our own handle to deal with this call */
- return ldb_next_request(module, ac->search_req);
-
-oom:
- map_oom(module);
-failed:
- talloc_free(h);
- return LDB_ERR_OPERATIONS_ERROR;
-}
-
-/* Delete the remote record. */
-int map_delete_do_remote(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->remote_req);
-
- ac->step = MAP_DELETE_REMOTE;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_remote_request(ac->module, ac->remote_req);
-}
-
-/* Delete the local record. */
-int map_delete_do_local(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- /* No local record, continue remotely */
- if (ac->local_dn == NULL) {
- return map_delete_do_remote(handle);
- }
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->local_req);
-
- ac->step = MAP_DELETE_LOCAL;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_request(ac->module, ac->local_req);
-}
-
-/* Delete a record. */
-int map_delete(struct ldb_module *module, struct ldb_request *req)
-{
- struct ldb_handle *h;
- struct map_context *ac;
-
- /* Do not manipulate our control entries */
- if (ldb_dn_is_special(req->op.del.dn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping requested (perhaps no DN mapping specified), skip to next module */
- if (!ldb_dn_check_local(module, req->op.del.dn)) {
- return ldb_next_request(module, req);
- }
-
- /* Prepare context and handle */
- h = map_init_handle(req, module);
- if (h == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ac = talloc_get_type(h->private_data, struct map_context);
-
- /* Prepare the local operation */
- ac->local_req = talloc(ac, struct ldb_request);
- if (ac->local_req == NULL) {
- goto oom;
- }
-
- *(ac->local_req) = *req; /* copy the request */
- ac->local_req->op.del.dn = req->op.del.dn;
-
- ac->local_req->context = NULL;
- ac->local_req->callback = NULL;
-
- /* Prepare the remote operation */
- ac->remote_req = talloc(ac, struct ldb_request);
- if (ac->remote_req == NULL) {
- goto oom;
- }
-
- *(ac->remote_req) = *req; /* copy the request */
- ac->remote_req->op.del.dn = ldb_dn_map_local(module, ac->remote_req, req->op.del.dn);
-
- /* No local db, just run the remote request */
- if (!map_check_local_db(ac->module)) {
- req->handle = h; /* return our own handle to deal with this call */
- return map_delete_do_remote(h);
- }
-
- ac->remote_req->context = NULL;
- ac->remote_req->callback = NULL;
-
- /* Prepare the search operation */
- ac->search_req = map_search_self_req(ac, req->op.del.dn);
- if (ac->search_req == NULL) {
- goto failed;
- }
-
- req->handle = h; /* return our own handle to deal with this call */
-
- ac->step = MAP_SEARCH_SELF_DELETE;
-
- return ldb_next_request(module, ac->search_req);
-
-oom:
- map_oom(module);
-failed:
- talloc_free(h);
- return LDB_ERR_OPERATIONS_ERROR;
-}
-
-/* Rename the remote record. */
-int map_rename_do_remote(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->remote_req);
-
- ac->step = MAP_RENAME_REMOTE;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_remote_request(ac->module, ac->remote_req);
-}
-
-/* Update the local 'IS_MAPPED' attribute. */
-int map_rename_do_fixup(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->down_req);
-
- ac->step = MAP_RENAME_FIXUP;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_request(ac->module, ac->down_req);
-}
-
-/* Rename the local record. */
-int map_rename_do_local(struct ldb_handle *handle)
-{
- struct map_context *ac;
-
- ac = talloc_get_type(handle->private_data, struct map_context);
-
- /* No local record, continue remotely */
- if (ac->local_dn == NULL) {
- return map_rename_do_remote(handle);
- }
-
- ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, ac->local_req);
-
- ac->step = MAP_RENAME_LOCAL;
-
- handle->state = LDB_ASYNC_INIT;
- handle->status = LDB_SUCCESS;
-
- return ldb_next_request(ac->module, ac->local_req);
-}
-
-/* Rename a record. */
-int map_rename(struct ldb_module *module, struct ldb_request *req)
-{
- struct ldb_handle *h;
- struct map_context *ac;
-
- /* Do not manipulate our control entries */
- if (ldb_dn_is_special(req->op.rename.olddn)) {
- return ldb_next_request(module, req);
- }
-
- /* No mapping requested (perhaps no DN mapping specified), skip to next module */
- if ((!ldb_dn_check_local(module, req->op.rename.olddn)) &&
- (!ldb_dn_check_local(module, req->op.rename.newdn))) {
- return ldb_next_request(module, req);
- }
-
- /* Rename into/out of the mapped partition requested, bail out */
- if (!ldb_dn_check_local(module, req->op.rename.olddn) ||
- !ldb_dn_check_local(module, req->op.rename.newdn)) {
- return LDB_ERR_AFFECTS_MULTIPLE_DSAS;
- }
-
- /* Prepare context and handle */
- h = map_init_handle(req, module);
- if (h == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ac = talloc_get_type(h->private_data, struct map_context);
-
- /* Prepare the local operation */
- ac->local_req = talloc(ac, struct ldb_request);
- if (ac->local_req == NULL) {
- goto oom;
- }
-
- *(ac->local_req) = *req; /* copy the request */
- ac->local_req->op.rename.olddn = req->op.rename.olddn;
- ac->local_req->op.rename.newdn = req->op.rename.newdn;
-
- ac->local_req->context = NULL;
- ac->local_req->callback = NULL;
-
- /* Prepare the remote operation */
- ac->remote_req = talloc(ac, struct ldb_request);
- if (ac->remote_req == NULL) {
- goto oom;
- }
-
- *(ac->remote_req) = *req; /* copy the request */
- ac->remote_req->op.rename.olddn = ldb_dn_map_local(module, ac->remote_req, req->op.rename.olddn);
- ac->remote_req->op.rename.newdn = ldb_dn_map_local(module, ac->remote_req, req->op.rename.newdn);
-
- ac->remote_req->context = NULL;
- ac->remote_req->callback = NULL;
-
- /* No local db, just run the remote request */
- if (!map_check_local_db(ac->module)) {
- req->handle = h; /* return our own handle to deal with this call */
- return map_rename_do_remote(h);
- }
-
- /* Prepare the fixup operation */
- /* TODO: use GUIDs here instead -- or skip it when GUIDs are used. */
- ac->down_req = map_build_fixup_req(ac, req->op.rename.newdn, ac->remote_req->op.rename.newdn);
- if (ac->down_req == NULL) {
- goto failed;
- }
-
- /* Prepare the search operation */
- ac->search_req = map_search_self_req(ac, req->op.rename.olddn);
- if (ac->search_req == NULL) {
- goto failed;
- }
-
- req->handle = h; /* return our own handle to deal with this call */
-
- ac->step = MAP_SEARCH_SELF_RENAME;
-
- return ldb_next_request(module, ac->search_req);
-
-oom:
- map_oom(module);
-failed:
- talloc_free(h);
- return LDB_ERR_OPERATIONS_ERROR;
-}
git.samba.org / kai / samba-autobuild / .git / blobdiff