diff options
Diffstat (limited to 'source4/lib/ldb/modules')
| -rw-r--r-- | source4/lib/ldb/modules/ldb_map.c | 1399 | ||||
| -rw-r--r-- | source4/lib/ldb/modules/ldb_map.h | 158 | ||||
| -rw-r--r-- | source4/lib/ldb/modules/ldb_map_inbound.c | 723 | ||||
| -rw-r--r-- | source4/lib/ldb/modules/ldb_map_outbound.c | 1289 | ||||
| -rw-r--r-- | source4/lib/ldb/modules/ldb_map_private.h | 117 |
5 files changed, 0 insertions, 3686 deletions
diff --git a/source4/lib/ldb/modules/ldb_map.c b/source4/lib/ldb/modules/ldb_map.c deleted file mode 100644 index 0fccbba702..0000000000 --- a/source4/lib/ldb/modules/ldb_map.c +++ /dev/null @@ -1,1399 +0,0 @@ -/* - 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 2 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -/* - * Name: ldb - * - * Component: ldb ldb_map module - * - * Description: Map portions of data into a different format on a - * remote partition. - * - * Author: Jelmer Vernooij, Martin Kuehl - */ - -#include "ldb_includes.h" - -#include "ldb_map.h" -#include "ldb_map_private.h" - -#ifndef _PUBLIC_ -#define _PUBLIC_ -#endif - -/* Description of the provided ldb requests: - - special attribute 'isMapped' - - - search: - - if parse tree can be split - - search remote records w/ remote attrs and parse tree - - otherwise - - enumerate all remote records - - for each remote result - - map remote result to local message - - search local result - - is present - - merge local into remote result - - run callback on merged result - - otherwise - - run callback on remote result - - - add: - - split message into local and remote part - - if local message is not empty - - add isMapped to local message - - add local message - - add remote message - - - modify: - - split message into local and remote part - - if local message is not empty - - add isMapped to local message - - search for local record - - if present - - modify local record - - otherwise - - add local message - - modify remote record - - - delete: - - search for local record - - if present - - delete local record - - delete remote record - - - rename: - - search for local record - - if present - - rename local record - - modify local isMapped - - rename remote record -*/ - - - -/* Private data structures - * ======================= */ - -/* Global private data */ -/* Extract mappings from private data. */ -const struct ldb_map_context *map_get_context(struct ldb_module *module) -{ - const struct map_private *data = talloc_get_type(module->private_data, struct map_private); - return data->context; -} - -/* Create a generic request context. */ -static struct map_context *map_init_context(struct ldb_handle *h, struct ldb_request *req) -{ - struct map_context *ac; - - ac = talloc_zero(h, struct map_context); - if (ac == NULL) { - map_oom(h->module); - return NULL; - } - - ac->module = h->module; - ac->orig_req = req; - - return ac; -} - -/* Create a search request context. */ -struct map_search_context *map_init_search_context(struct map_context *ac, struct ldb_reply *ares) -{ - struct map_search_context *sc; - - sc = talloc_zero(ac, struct map_search_context); - if (sc == NULL) { - map_oom(ac->module); - return NULL; - } - - sc->ac = ac; - sc->local_res = NULL; - sc->remote_res = ares; - - return sc; -} - -/* Create a request context and handle. */ -struct ldb_handle *map_init_handle(struct ldb_request *req, struct ldb_module *module) -{ - struct map_context *ac; - struct ldb_handle *h; - - h = talloc_zero(req, struct ldb_handle); - if (h == NULL) { - map_oom(module); - return NULL; - } - - h->module = module; - - ac = map_init_context(h, req); - if (ac == NULL) { - talloc_free(h); - return NULL; - } - - h->private_data = (void *)ac; - - h->state = LDB_ASYNC_INIT; - h->status = LDB_SUCCESS; - - return h; -} - - -/* Dealing with DNs for different partitions - * ========================================= */ - -/* Check whether any data should be stored in the local partition. */ -bool map_check_local_db(struct ldb_module *module) -{ - const struct ldb_map_context *data = map_get_context(module); - - if (!data->remote_base_dn || !data->local_base_dn) { - return false; - } - - return true; -} - -/* Copy a DN with the base DN of the local partition. */ -static struct ldb_dn *ldb_dn_rebase_local(void *mem_ctx, const struct ldb_map_context *data, struct ldb_dn *dn) -{ - struct ldb_dn *new_dn; - - new_dn = ldb_dn_copy(mem_ctx, dn); - if ( ! ldb_dn_validate(new_dn)) { - talloc_free(new_dn); - return NULL; - } - - /* may be we don't need to rebase at all */ - if ( ! data->remote_base_dn || ! data->local_base_dn) { - return new_dn; - } - - if ( ! ldb_dn_remove_base_components(new_dn, ldb_dn_get_comp_num(data->remote_base_dn))) { - talloc_free(new_dn); - return NULL; - } - - if ( ! ldb_dn_add_base(new_dn, data->local_base_dn)) { - talloc_free(new_dn); - return NULL; - } - - return new_dn; -} - -/* Copy a DN with the base DN of the remote partition. */ -static struct ldb_dn *ldb_dn_rebase_remote(void *mem_ctx, const struct ldb_map_context *data, struct ldb_dn *dn) -{ - struct ldb_dn *new_dn; - - new_dn = ldb_dn_copy(mem_ctx, dn); - if ( ! ldb_dn_validate(new_dn)) { - talloc_free(new_dn); - return NULL; - } - - /* may be we don't need to rebase at all */ - if ( ! data->remote_base_dn || ! data->local_base_dn) { - return new_dn; - } - - if ( ! ldb_dn_remove_base_components(new_dn, ldb_dn_get_comp_num(data->local_base_dn))) { - talloc_free(new_dn); - return NULL; - } - - if ( ! ldb_dn_add_base(new_dn, data->remote_base_dn)) { - talloc_free(new_dn); - return NULL; - } - - return new_dn; -} - -/* Run a request and make sure it targets the remote partition. */ -/* TODO: free old DNs and messages? */ -int ldb_next_remote_request(struct ldb_module *module, struct ldb_request *request) -{ - const struct ldb_map_context *data = map_get_context(module); - struct ldb_message *msg; - - switch (request->operation) { - case LDB_SEARCH: - if (request->op.search.base) { - request->op.search.base = ldb_dn_rebase_remote(request, data, request->op.search.base); - } else { - request->op.search.base = data->remote_base_dn; - /* TODO: adjust scope? */ - } - break; - - case LDB_ADD: - msg = ldb_msg_copy_shallow(request, request->op.add.message); - msg->dn = ldb_dn_rebase_remote(msg, data, msg->dn); - request->op.add.message = msg; - break; - - case LDB_MODIFY: - msg = ldb_msg_copy_shallow(request, request->op.mod.message); - msg->dn = ldb_dn_rebase_remote(msg, data, msg->dn); - request->op.mod.message = msg; - break; - - case LDB_DELETE: - request->op.del.dn = ldb_dn_rebase_remote(request, data, request->op.del.dn); - break; - - case LDB_RENAME: - request->op.rename.olddn = ldb_dn_rebase_remote(request, data, request->op.rename.olddn); - request->op.rename.newdn = ldb_dn_rebase_remote(request, data, request->op.rename.newdn); - break; - - default: - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "Invalid remote request!\n"); - return LDB_ERR_OPERATIONS_ERROR; - } - - return ldb_next_request(module, request); -} - - -/* Finding mappings for attributes and objectClasses - * ================================================= */ - -/* Find an objectClass mapping by the local name. */ -static const struct ldb_map_objectclass *map_objectclass_find_local(const struct ldb_map_context *data, const char *name) -{ - int i; - - for (i = 0; data->objectclass_maps && data->objectclass_maps[i].local_name; i++) { - if (ldb_attr_cmp(data->objectclass_maps[i].local_name, name) == 0) { - return &data->objectclass_maps[i]; - } - } - - return NULL; -} - -/* Find an objectClass mapping by the remote name. */ -static const struct ldb_map_objectclass *map_objectclass_find_remote(const struct ldb_map_context *data, const char *name) -{ - int i; - - for (i = 0; data->objectclass_maps && data->objectclass_maps[i].remote_name; i++) { - if (ldb_attr_cmp(data->objectclass_maps[i].remote_name, name) == 0) { - return &data->objectclass_maps[i]; - } - } - - return NULL; -} - -/* Find an attribute mapping by the local name. */ -const struct ldb_map_attribute *map_attr_find_local(const struct ldb_map_context *data, const char *name) -{ - int i; - - for (i = 0; data->attribute_maps[i].local_name; i++) { - if (ldb_attr_cmp(data->attribute_maps[i].local_name, name) == 0) { - return &data->attribute_maps[i]; - } - } - for (i = 0; data->attribute_maps[i].local_name; i++) { - if (ldb_attr_cmp(data->attribute_maps[i].local_name, "*") == 0) { - return &data->attribute_maps[i]; - } - } - - return NULL; -} - -/* Find an attribute mapping by the remote name. */ -const struct ldb_map_attribute *map_attr_find_remote(const struct ldb_map_context *data, const char *name) -{ - const struct ldb_map_attribute *map; - const struct ldb_map_attribute *wildcard = NULL; - int i, j; - - for (i = 0; data->attribute_maps[i].local_name; i++) { - map = &data->attribute_maps[i]; - if (ldb_attr_cmp(map->local_name, "*") == 0) { - wildcard = &data->attribute_maps[i]; - } - - switch (map->type) { - case MAP_IGNORE: - break; - - case MAP_KEEP: - if (ldb_attr_cmp(map->local_name, name) == 0) { - return map; - } - break; - - case MAP_RENAME: - case MAP_CONVERT: - if (ldb_attr_cmp(map->u.rename.remote_name, name) == 0) { - return map; - } - break; - - case MAP_GENERATE: - for (j = 0; map->u.generate.remote_names && map->u.generate.remote_names[j]; j++) { - if (ldb_attr_cmp(map->u.generate.remote_names[j], name) == 0) { - return map; - } - } - break; - } - } - - /* We didn't find it, so return the wildcard record if one was configured */ - return wildcard; -} - - -/* Mapping attributes - * ================== */ - -/* Check whether an attribute will be mapped into the remote partition. */ -bool map_attr_check_remote(const struct ldb_map_context *data, const char *attr) -{ - const struct ldb_map_attribute *map = map_attr_find_local(data, attr); - - if (map == NULL) { - return false; - } - if (map->type == MAP_IGNORE) { - return false; - } - - return true; -} - -/* Map an attribute name into the remote partition. */ -const char *map_attr_map_local(void *mem_ctx, const struct ldb_map_attribute *map, const char *attr) -{ - if (map == NULL) { - return talloc_strdup(mem_ctx, attr); - } - - switch (map->type) { - case MAP_KEEP: - return talloc_strdup(mem_ctx, attr); - - case MAP_RENAME: - case MAP_CONVERT: - return talloc_strdup(mem_ctx, map->u.rename.remote_name); - - default: - return NULL; - } -} - -/* Map an attribute name back into the local partition. */ -const char *map_attr_map_remote(void *mem_ctx, const struct ldb_map_attribute *map, const char *attr) -{ - if (map == NULL) { - return talloc_strdup(mem_ctx, attr); - } - - if (map->type == MAP_KEEP) { - return talloc_strdup(mem_ctx, attr); - } - - return talloc_strdup(mem_ctx, map->local_name); -} - - -/* Merge two lists of attributes into a single one. */ -int map_attrs_merge(struct ldb_module *module, void *mem_ctx, - const char ***attrs, const char * const *more_attrs) -{ - int i, j, k; - - for (i = 0; *attrs && (*attrs)[i]; i++) /* noop */ ; - for (j = 0; more_attrs && more_attrs[j]; j++) /* noop */ ; - - *attrs = talloc_realloc(mem_ctx, *attrs, const char *, i+j+1); - if (*attrs == NULL) { - map_oom(module); - return -1; - } - - for (k = 0; k < j; k++) { - (*attrs)[i + k] = more_attrs[k]; - } - - (*attrs)[i+k] = NULL; - - return 0; -} - -/* Mapping ldb values - * ================== */ - -/* Map an ldb value into the remote partition. */ -struct ldb_val ldb_val_map_local(struct ldb_module *module, void *mem_ctx, - const struct ldb_map_attribute *map, const struct ldb_val *val) -{ - if (map && (map->type == MAP_CONVERT) && (map->u.convert.convert_local)) { - return map->u.convert.convert_local(module, mem_ctx, val); - } - - return ldb_val_dup(mem_ctx, val); -} - -/* Map an ldb value back into the local partition. */ -struct ldb_val ldb_val_map_remote(struct ldb_module *module, void *mem_ctx, - const struct ldb_map_attribute *map, const struct ldb_val *val) -{ - if (map && (map->type == MAP_CONVERT) && (map->u.convert.convert_remote)) { - return map->u.convert.convert_remote(module, mem_ctx, val); - } - - return ldb_val_dup(mem_ctx, val); -} - - -/* Mapping DNs - * =========== */ - -/* Check whether a DN is below the local baseDN. */ -bool ldb_dn_check_local(struct ldb_module *module, struct ldb_dn *dn) -{ - const struct ldb_map_context *data = map_get_context(module); - - if (!data->local_base_dn) { - return true; - } - - return ldb_dn_compare_base(data->local_base_dn, dn) == 0; -} - -/* Map a DN into the remote partition. */ -struct ldb_dn *ldb_dn_map_local(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn) -{ - const struct ldb_map_context *data = map_get_context(module); - struct ldb_dn *newdn; - const struct ldb_map_attribute *map; - enum ldb_map_attr_type map_type; - const char *name; - struct ldb_val value; - int i, ret; - - if (dn == NULL) { - return NULL; - } - - newdn = ldb_dn_copy(mem_ctx, dn); - if (newdn == NULL) { - map_oom(module); - return NULL; - } - - /* For each RDN, map the component name and possibly the value */ - for (i = 0; i < ldb_dn_get_comp_num(newdn); i++) { - map = map_attr_find_local(data, ldb_dn_get_component_name(dn, i)); - - /* Unknown attribute - leave this RDN as is and hope the best... */ - if (map == NULL) { - map_type = MAP_KEEP; - } else { - map_type = map->type; - } - - switch (map_type) { - case MAP_IGNORE: - case MAP_GENERATE: - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "MAP_IGNORE/MAP_GENERATE attribute '%s' " - "used in DN!\n", ldb_dn_get_component_name(dn, i)); - goto failed; - - case MAP_CONVERT: - if (map->u.convert.convert_local == NULL) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "'convert_local' not set for attribute '%s' " - "used in DN!\n", ldb_dn_get_component_name(dn, i)); - goto failed; - } - /* fall through */ - case MAP_KEEP: - case MAP_RENAME: - name = map_attr_map_local(newdn, map, ldb_dn_get_component_name(dn, i)); - if (name == NULL) goto failed; - - value = ldb_val_map_local(module, newdn, map, ldb_dn_get_component_val(dn, i)); - if (value.data == NULL) goto failed; - - ret = ldb_dn_set_component(newdn, i, name, value); - if (ret != LDB_SUCCESS) { - goto failed; - } - - break; - } - } - - return newdn; - -failed: - talloc_free(newdn); - return NULL; -} - -/* Map a DN into the local partition. */ -struct ldb_dn *ldb_dn_map_remote(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn) -{ - const struct ldb_map_context *data = map_get_context(module); - struct ldb_dn *newdn; - const struct ldb_map_attribute *map; - enum ldb_map_attr_type map_type; - const char *name; - struct ldb_val value; - int i, ret; - - if (dn == NULL) { - return NULL; - } - - newdn = ldb_dn_copy(mem_ctx, dn); - if (newdn == NULL) { - map_oom(module); - return NULL; - } - - /* For each RDN, map the component name and possibly the value */ - for (i = 0; i < ldb_dn_get_comp_num(newdn); i++) { - map = map_attr_find_remote(data, ldb_dn_get_component_name(dn, i)); - - /* Unknown attribute - leave this RDN as is and hope the best... */ - if (map == NULL) { - map_type = MAP_KEEP; - } else { - map_type = map->type; - } - - switch (map_type) { - case MAP_IGNORE: - case MAP_GENERATE: - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "MAP_IGNORE/MAP_GENERATE attribute '%s' " - "used in DN!\n", ldb_dn_get_component_name(dn, i)); - goto failed; - - case MAP_CONVERT: - if (map->u.convert.convert_remote == NULL) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "'convert_remote' not set for attribute '%s' " - "used in DN!\n", ldb_dn_get_component_name(dn, i)); - goto failed; - } - /* fall through */ - case MAP_KEEP: - case MAP_RENAME: - name = map_attr_map_remote(newdn, map, ldb_dn_get_component_name(dn, i)); - if (name == NULL) goto failed; - - value = ldb_val_map_remote(module, newdn, map, ldb_dn_get_component_val(dn, i)); - if (value.data == NULL) goto failed; - - ret = ldb_dn_set_component(newdn, i, name, value); - if (ret != LDB_SUCCESS) { - goto failed; - } - - break; - } - } - - return newdn; - -failed: - talloc_free(newdn); - return NULL; -} - -/* Map a DN and its base into the local partition. */ -/* TODO: This should not be required with GUIDs. */ -struct ldb_dn *ldb_dn_map_rebase_remote(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn) -{ - const struct ldb_map_context *data = map_get_context(module); - struct ldb_dn *dn1, *dn2; - - dn1 = ldb_dn_rebase_local(mem_ctx, data, dn); - dn2 = ldb_dn_map_remote(module, mem_ctx, dn1); - - talloc_free(dn1); - return dn2; -} - - -/* Converting DNs and objectClasses (as ldb values) - * ================================================ */ - -/* Map a DN contained in an ldb value into the remote partition. */ -static struct ldb_val ldb_dn_convert_local(struct ldb_module *module, void *mem_ctx, const struct ldb_val *val) -{ - struct ldb_dn *dn, *newdn; - struct ldb_val newval; - - dn = ldb_dn_new(mem_ctx, module->ldb, (char *)val->data); - if (! ldb_dn_validate(dn)) { - newval.length = 0; - newval.data = NULL; - talloc_free(dn); - return newval; - } - newdn = ldb_dn_map_local(module, mem_ctx, dn); - talloc_free(dn); - - newval.length = 0; - newval.data = (uint8_t *)ldb_dn_alloc_linearized(mem_ctx, newdn); - if (newval.data) { - newval.length = strlen((char *)newval.data); - } - talloc_free(newdn); - - return newval; -} - -/* Map a DN contained in an ldb value into the local partition. */ -static struct ldb_val ldb_dn_convert_remote(struct ldb_module *module, void *mem_ctx, const struct ldb_val *val) -{ - struct ldb_dn *dn, *newdn; - struct ldb_val newval; - - dn = ldb_dn_new(mem_ctx, module->ldb, (char *)val->data); - if (! ldb_dn_validate(dn)) { - newval.length = 0; - newval.data = NULL; - talloc_free(dn); - return newval; - } - newdn = ldb_dn_map_remote(module, mem_ctx, dn); - talloc_free(dn); - - newval.length = 0; - newval.data = (uint8_t *)ldb_dn_alloc_linearized(mem_ctx, newdn); - if (newval.data) { - newval.length = strlen((char *)newval.data); - } - talloc_free(newdn); - - return newval; -} - -/* Map an objectClass into the remote partition. */ -static struct ldb_val map_objectclass_convert_local(struct ldb_module *module, void *mem_ctx, const struct ldb_val *val) -{ - const struct ldb_map_context *data = map_get_context(module); - const char *name = (char *)val->data; - const struct ldb_map_objectclass *map = map_objectclass_find_local(data, name); - struct ldb_val newval; - - if (map) { - newval.data = (uint8_t*)talloc_strdup(mem_ctx, map->remote_name); - newval.length = strlen((char *)newval.data); - return newval; - } - - return ldb_val_dup(mem_ctx, val); -} - -/* Generate a remote message with a mapped objectClass. */ -static void map_objectclass_generate_remote(struct ldb_module *module, const char *local_attr, const struct ldb_message *old, struct ldb_message *remote, struct ldb_message *local) -{ - struct ldb_message_element *el, *oc; - struct ldb_val val; - bool found_extensibleObject = false; - int i; - - /* Find old local objectClass */ - oc = ldb_msg_find_element(old, "objectClass"); - if (oc == NULL) { - return; - } - - /* Prepare new element */ - el = talloc_zero(remote, struct ldb_message_element); - if (el == NULL) { - ldb_oom(module->ldb); - return; /* TODO: fail? */ - } - - /* Copy local objectClass element, reverse space for an extra value */ - el->num_values = oc->num_values + 1; - el->values = talloc_array(el, struct ldb_val, el->num_values); - if (el->values == NULL) { - talloc_free(el); - ldb_oom(module->ldb); - return; /* TODO: fail? */ - } - - /* Copy local element name "objectClass" */ - el->name = talloc_strdup(el, local_attr); - - /* Convert all local objectClasses */ - for (i = 0; i < el->num_values - 1; i++) { - el->values[i] = map_objectclass_convert_local(module, el->values, &oc->values[i]); - if (ldb_attr_cmp((char *)el->values[i].data, "extensibleObject") == 0) { - found_extensibleObject = true; - } - } - - if (!found_extensibleObject) { - val.data = (uint8_t *)talloc_strdup(el->values, "extensibleObject"); - val.length = strlen((char *)val.data); - - /* Append additional objectClass "extensibleObject" */ - el->values[i] = val; - } else { - el->num_values--; - } - - /* Add new objectClass to remote message */ - ldb_msg_add(remote, el, 0); -} - -/* Map an objectClass into the local partition. */ -static struct ldb_val map_objectclass_convert_remote(struct ldb_module *module, void *mem_ctx, const struct ldb_val *val) -{ - const struct ldb_map_context *data = map_get_context(module); - const char *name = (char *)val->data; - const struct ldb_map_objectclass *map = map_objectclass_find_remote(data, name); - struct ldb_val newval; - - if (map) { - newval.data = (uint8_t*)talloc_strdup(mem_ctx, map->local_name); - newval.length = strlen((char *)newval.data); - return newval; - } - - return ldb_val_dup(mem_ctx, val); -} - -/* Generate a local message with a mapped objectClass. */ -static struct ldb_message_element *map_objectclass_generate_local(struct ldb_module *module, void *mem_ctx, const char *local_attr, const struct ldb_message *remote) -{ - struct ldb_message_element *el, *oc; - struct ldb_val val; - int i; - - /* Find old remote objectClass */ - oc = ldb_msg_find_element(remote, "objectClass"); - if (oc == NULL) { - return NULL; - } - - /* Prepare new element */ - el = talloc_zero(mem_ctx, struct ldb_message_element); - if (el == NULL) { - ldb_oom(module->ldb); - return NULL; - } - - /* Copy remote objectClass element */ - el->num_values = oc->num_values; - el->values = talloc_array(el, struct ldb_val, el->num_values); - if (el->values == NULL) { - talloc_free(el); - ldb_oom(module->ldb); - return NULL; - } - - /* Copy remote element name "objectClass" */ - el->name = talloc_strdup(el, local_attr); - - /* Convert all remote objectClasses */ - for (i = 0; i < el->num_values; i++) { - el->values[i] = map_objectclass_convert_remote(module, el->values, &oc->values[i]); - } - - val.data = (uint8_t *)talloc_strdup(el->values, "extensibleObject"); - val.length = strlen((char *)val.data); - - /* Remove last value if it was "extensibleObject" */ - if (ldb_val_equal_exact(&val, &el->values[i-1])) { - el->num_values--; - el->values = talloc_realloc(el, el->values, struct ldb_val, el->num_values); - if (el->values == NULL) { - talloc_free(el); - ldb_oom(module->ldb); - return NULL; - } - } - - return el; -} - -/* Mappings for searches on objectClass= assuming a one-to-one - * mapping. Needed because this is a generate operator for the - * add/modify code */ -static int map_objectclass_convert_operator(struct ldb_module *module, void *mem_ctx, - struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - - static const struct ldb_map_attribute objectclass_map = { - .local_name = "objectClass", - .type = MAP_CONVERT, - .u = { - .convert = { - .remote_name = "objectClass", - .convert_local = map_objectclass_convert_local, - .convert_remote = map_objectclass_convert_remote, - }, - }, - }; - - return map_subtree_collect_remote_simple(module, mem_ctx, new, tree, &objectclass_map); -} - -/* Auxiliary request construction - * ============================== */ - -/* Store the DN of a single search result in context. */ -static int map_search_self_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares) -{ - struct map_context *ac; - - if (context == NULL || ares == NULL) { - ldb_set_errstring(ldb, talloc_asprintf(ldb, "NULL Context or Result in callback")); - return LDB_ERR_OPERATIONS_ERROR; - } - - ac = talloc_get_type(context, struct map_context); - - /* We are interested only in the single reply */ - if (ares->type != LDB_REPLY_ENTRY) { - talloc_free(ares); - return LDB_SUCCESS; - } - - /* We have already found a remote DN */ - if (ac->local_dn) { - ldb_set_errstring(ldb, talloc_asprintf(ldb, "Too many results to base search")); - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* Store local DN */ - ac->local_dn = ares->message->dn; - - return LDB_SUCCESS; -} - -/* Build a request to search a record by its DN. */ -struct ldb_request *map_search_base_req(struct map_context *ac, struct ldb_dn *dn, const char * const *attrs, const struct ldb_parse_tree *tree, void *context, ldb_search_callback callback) -{ - struct ldb_request *req; - - req = talloc_zero(ac, struct ldb_request); - if (req == NULL) { - map_oom(ac->module); - return NULL; - } - - req->operation = LDB_SEARCH; - req->op.search.base = dn; - req->op.search.scope = LDB_SCOPE_BASE; - req->op.search.attrs = attrs; - - if (tree) { - req->op.search.tree = tree; - } else { - req->op.search.tree = ldb_parse_tree(req, NULL); - if (req->op.search.tree == NULL) { - talloc_free(req); - return NULL; - } - } - - req->controls = NULL; - req->context = context; - req->callback = callback; - ldb_set_timeout_from_prev_req(ac->module->ldb, ac->orig_req, req); - - return req; -} - -/* Build a request to search the local record by its DN. */ -struct ldb_request *map_search_self_req(struct map_context *ac, struct ldb_dn *dn) -{ - /* attrs[] is returned from this function in - * ac->search_req->op.search.attrs, so it must be static, as - * otherwise the compiler can put it on the stack */ - static const char * const attrs[] = { IS_MAPPED, NULL }; - struct ldb_parse_tree *tree; - - /* Limit search to records with 'IS_MAPPED' present */ - /* TODO: `tree = ldb_parse_tree(ac, IS_MAPPED);' won't do. */ - tree = talloc_zero(ac, struct ldb_parse_tree); - if (tree == NULL) { - map_oom(ac->module); - return NULL; - } - - tree->operation = LDB_OP_PRESENT; - tree->u.present.attr = talloc_strdup(tree, IS_MAPPED); - - return map_search_base_req(ac, dn, attrs, tree, ac, map_search_self_callback); -} - -/* Build a request to update the 'IS_MAPPED' attribute */ -struct ldb_request *map_build_fixup_req(struct map_context *ac, struct ldb_dn *olddn, struct ldb_dn *newdn) -{ - struct ldb_request *req; - struct ldb_message *msg; - const char *dn; - - /* Prepare request */ - req = talloc_zero(ac, struct ldb_request); - if (req == NULL) { - map_oom(ac->module); - return NULL; - } - - /* Prepare message */ - msg = ldb_msg_new(req); - if (msg == NULL) { - map_oom(ac->module); - goto failed; - } - - /* Update local 'IS_MAPPED' to the new remote DN */ - msg->dn = ldb_dn_copy(msg, olddn); - dn = ldb_dn_alloc_linearized(msg, newdn); - if ( ! dn || ! ldb_dn_validate(msg->dn)) { - goto failed; - } - if (ldb_msg_add_empty(msg, IS_MAPPED, LDB_FLAG_MOD_REPLACE, NULL) != 0) { - goto failed; - } - if (ldb_msg_add_string(msg, IS_MAPPED, dn) != 0) { - goto failed; - } - - req->operation = LDB_MODIFY; - req->op.mod.message = msg; - req->controls = NULL; - req->handle = NULL; - req->context = NULL; - req->callback = NULL; - - return req; - -failed: - talloc_free(req); - return NULL; -} - - -/* Asynchronous call structure - * =========================== */ - -/* Figure out which request is currently pending. */ -static struct ldb_request *map_get_req(struct map_context *ac) -{ - switch (ac->step) { - case MAP_SEARCH_SELF_MODIFY: - case MAP_SEARCH_SELF_DELETE: - case MAP_SEARCH_SELF_RENAME: - return ac->search_req; - - case MAP_ADD_REMOTE: - case MAP_MODIFY_REMOTE: - case MAP_DELETE_REMOTE: - case MAP_RENAME_REMOTE: - return ac->remote_req; - - case MAP_RENAME_FIXUP: - return ac->down_req; - - case MAP_ADD_LOCAL: - case MAP_MODIFY_LOCAL: - case MAP_DELETE_LOCAL: - case MAP_RENAME_LOCAL: - return ac->local_req; - - case MAP_SEARCH_REMOTE: - /* Can't happen */ - break; - } - - return NULL; /* unreachable; silences a warning */ -} - -typedef int (*map_next_function)(struct ldb_handle *handle); - -/* Figure out the next request to run. */ -static map_next_function map_get_next(struct map_context *ac) -{ - switch (ac->step) { - case MAP_SEARCH_REMOTE: - return NULL; - - case MAP_ADD_LOCAL: - return map_add_do_remote; - case MAP_ADD_REMOTE: - return NULL; - - case MAP_SEARCH_SELF_MODIFY: - return map_modify_do_local; - case MAP_MODIFY_LOCAL: - return map_modify_do_remote; - case MAP_MODIFY_REMOTE: - return NULL; - - case MAP_SEARCH_SELF_DELETE: - return map_delete_do_local; - case MAP_DELETE_LOCAL: - return map_delete_do_remote; - case MAP_DELETE_REMOTE: - return NULL; - - case MAP_SEARCH_SELF_RENAME: - return map_rename_do_local; - case MAP_RENAME_LOCAL: - return map_rename_do_fixup; - case MAP_RENAME_FIXUP: - return map_rename_do_remote; - case MAP_RENAME_REMOTE: - return NULL; - } - - return NULL; /* unreachable; silences a warning */ -} - -/* Wait for the current pending request to finish and continue with the next. */ -static int map_wait_next(struct ldb_handle *handle) -{ - struct map_context *ac; - struct ldb_request *req; - map_next_function next; - int ret; - - if (handle == NULL || handle->private_data == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - if (handle->state == LDB_ASYNC_DONE) { - return handle->status; - } - - handle->state = LDB_ASYNC_PENDING; - handle->status = LDB_SUCCESS; - - ac = talloc_get_type(handle->private_data, struct map_context); - - if (ac->step == MAP_SEARCH_REMOTE) { - int i; - for (i = 0; i < ac->num_searches; i++) { - req = ac->search_reqs[i]; - ret = ldb_wait(req->handle, LDB_WAIT_NONE); - - if (ret != LDB_SUCCESS) { - handle->status = ret; - goto done; - } - if (req->handle->status != LDB_SUCCESS) { - handle->status = req->handle->status; - goto done; - } - if (req->handle->state != LDB_ASYNC_DONE) { - return LDB_SUCCESS; - } - } - } else { - - req = map_get_req(ac); - - ret = ldb_wait(req->handle, LDB_WAIT_NONE); - - if (ret != LDB_SUCCESS) { - handle->status = ret; - goto done; - } - if (req->handle->status != LDB_SUCCESS) { - handle->status = req->handle->status; - goto done; - } - if (req->handle->state != LDB_ASYNC_DONE) { - return LDB_SUCCESS; - } - - next = map_get_next(ac); - if (next) { - return next(handle); - } - } - - ret = LDB_SUCCESS; - -done: - handle->state = LDB_ASYNC_DONE; - return ret; -} - -/* Wait for all current pending requests to finish. */ -static int map_wait_all(struct ldb_handle *handle) -{ - int ret; - - while (handle->state != LDB_ASYNC_DONE) { - ret = map_wait_next(handle); - if (ret != LDB_SUCCESS) { - return ret; - } - } - - return handle->status; -} - -/* Wait for pending requests to finish. */ -static int map_wait(struct ldb_handle *handle, enum ldb_wait_type type) -{ - if (type == LDB_WAIT_ALL) { - return map_wait_all(handle); - } else { - return map_wait_next(handle); - } -} - - -/* Module initialization - * ===================== */ - -/* Provided module operations */ -static const struct ldb_module_ops map_ops = { - .name = "ldb_map", - .add = map_add, - .modify = map_modify, - .del = map_delete, - .rename = map_rename, - .search = map_search, - .wait = map_wait, -}; - -/* Builtin mappings for DNs and objectClasses */ -static const struct ldb_map_attribute builtin_attribute_maps[] = { - { - .local_name = "dn", - .type = MAP_CONVERT, - .u = { - .convert = { - .remote_name = "dn", - .convert_local = ldb_dn_convert_local, - .convert_remote = ldb_dn_convert_remote, - }, - }, - }, - { - .local_name = "objectClass", - .type = MAP_GENERATE, - .convert_operator = map_objectclass_convert_operator, - .u = { - .generate = { - .remote_names = { "objectClass", NULL }, - .generate_local = map_objectclass_generate_local, - .generate_remote = map_objectclass_generate_remote, - }, - }, - }, - { - .local_name = NULL, - } -}; - -/* Find the special 'MAP_DN_NAME' record and store local and remote - * base DNs in private data. */ -static int map_init_dns(struct ldb_module *module, struct ldb_map_context *data, const char *name) -{ - static const char * const attrs[] = { MAP_DN_FROM, MAP_DN_TO, NULL }; - struct ldb_dn *dn; - struct ldb_message *msg; - struct ldb_result *res; - int ret; - - if (!name) { - data->local_base_dn = NULL; - data->remote_base_dn = NULL; - return LDB_SUCCESS; - } - - dn = ldb_dn_new_fmt(data, module->ldb, "%s=%s", MAP_DN_NAME, name); - if ( ! ldb_dn_validate(dn)) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "Failed to construct '%s' DN!\n", MAP_DN_NAME); - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ldb_search(module->ldb, dn, LDB_SCOPE_BASE, NULL, attrs, &res); - talloc_free(dn); - if (ret != LDB_SUCCESS) { - return ret; - } - if (res->count == 0) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "No results for '%s=%s'!\n", MAP_DN_NAME, name); - talloc_free(res); - return LDB_ERR_CONSTRAINT_VIOLATION; - } - if (res->count > 1) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "Too many results for '%s=%s'!\n", MAP_DN_NAME, name); - talloc_free(res); - return LDB_ERR_CONSTRAINT_VIOLATION; - } - - msg = res->msgs[0]; - data->local_base_dn = ldb_msg_find_attr_as_dn(module->ldb, data, msg, MAP_DN_FROM); - data->remote_base_dn = ldb_msg_find_attr_as_dn(module->ldb, data, msg, MAP_DN_TO); - talloc_free(res); - - return LDB_SUCCESS; -} - -/* Store attribute maps and objectClass maps in private data. */ -static int map_init_maps(struct ldb_module *module, struct ldb_map_context *data, - const struct ldb_map_attribute *attrs, - const struct ldb_map_objectclass *ocls, - const char * const *wildcard_attributes) -{ - int i, j, last; - last = 0; - - /* Count specified attribute maps */ - for (i = 0; attrs[i].local_name; i++) /* noop */ ; - /* Count built-in attribute maps */ - for (j = 0; builtin_attribute_maps[j].local_name; j++) /* noop */ ; - - /* Store list of attribute maps */ - data->attribute_maps = talloc_array(data, struct ldb_map_attribute, i+j+1); - if (data->attribute_maps == NULL) { - map_oom(module); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* Specified ones go first */ - for (i = 0; attrs[i].local_name; i++) { - data->attribute_maps[last] = attrs[i]; - last++; - } - - /* Built-in ones go last */ - for (i = 0; builtin_attribute_maps[i].local_name; i++) { - data->attribute_maps[last] = builtin_attribute_maps[i]; - last++; - } - - /* Ensure 'local_name == NULL' for the last entry */ - memset(&data->attribute_maps[last], 0, sizeof(struct ldb_map_attribute)); - - /* Store list of objectClass maps */ - data->objectclass_maps = ocls; - - data->wildcard_attributes = wildcard_attributes; - - return LDB_SUCCESS; -} - -/* Copy the list of provided module operations. */ -_PUBLIC_ struct ldb_module_ops ldb_map_get_ops(void) -{ - return map_ops; -} - -/* Initialize global private data. */ -_PUBLIC_ int ldb_map_init(struct ldb_module *module, const struct ldb_map_attribute *attrs, - const struct ldb_map_objectclass *ocls, - const char * const *wildcard_attributes, - const char *name) -{ - struct map_private *data; - int ret; - - /* Prepare private data */ - data = talloc_zero(module, struct map_private); - if (data == NULL) { - map_oom(module); - return LDB_ERR_OPERATIONS_ERROR; - } - - module->private_data = data; - - data->context = talloc_zero(data, struct ldb_map_context); - if (!data->context) { - map_oom(module); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* Store local and remote baseDNs */ - ret = map_init_dns(module, data->context, name); - if (ret != LDB_SUCCESS) { - talloc_free(data); - return ret; - } - - /* Store list of attribute and objectClass maps */ - ret = map_init_maps(module, data->context, attrs, ocls, wildcard_attributes); - if (ret != LDB_SUCCESS) { - talloc_free(data); - return ret; - } - - return LDB_SUCCESS; -} - -/* Usage note for initialization of this module: - * - * ldb_map is meant to be used from a different module that sets up - * the mappings and gets registered in ldb. - * - * 'ldb_map_init' initializes the private data of this module and - * stores the attribute and objectClass maps in there. It also looks - * up the '@MAP' special DN so requests can be redirected to the - * remote partition. - * - * This function should be called from the 'init_context' op of the - * module using ldb_map. - * - * 'ldb_map_get_ops' returns a copy of ldb_maps module operations. - * - * It should be called from the initialize function of the using - * module, which should then override the 'init_context' op with a - * function making the appropriate calls to 'ldb_map_init'. - */ diff --git a/source4/lib/ldb/modules/ldb_map.h b/source4/lib/ldb/modules/ldb_map.h deleted file mode 100644 index e8de2e3698..0000000000 --- a/source4/lib/ldb/modules/ldb_map.h +++ /dev/null @@ -1,158 +0,0 @@ -/* - 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 2 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#ifndef __LDB_MAP_H__ -#define __LDB_MAP_H__ - -/* ldb_map is a skeleton LDB module that can be used for any other modules - * that need to map attributes. - * - * The term 'remote' in this header refers to the connection where the - * original schema is used on while 'local' means the local connection - * that any upper layers will use. - * - * All local attributes will have to have a definition. Not all remote - * attributes need a definition as LDB is a lot less strict than LDAP - * (in other words, sending unknown attributes to an LDAP server hurts us, - * while returning too many attributes in ldb_search() doesn't) - */ - - -/* Name of the internal attribute pointing from the local to the - * remote part of a record */ -#define IS_MAPPED "isMapped" - - -struct ldb_map_context; - -/* convert a local ldb_val to a remote ldb_val */ -typedef struct ldb_val (*ldb_map_convert_func) (struct ldb_module *module, void *mem_ctx, const struct ldb_val *val); - -#define LDB_MAP_MAX_REMOTE_NAMES 10 - -/* map from local to remote attribute */ -struct ldb_map_attribute { - const char *local_name; /* local name */ - - enum ldb_map_attr_type { - MAP_IGNORE, /* Ignore this local attribute. Doesn't exist remotely. */ - MAP_KEEP, /* Keep as is. Same name locally and remotely. */ - MAP_RENAME, /* Simply rename the attribute. Name changes, data is the same */ - MAP_CONVERT, /* Rename + convert data */ - MAP_GENERATE /* Use generate function for generating new name/data. - Used for generating attributes based on - multiple remote attributes. */ - } type; - - /* if set, will be called for search expressions that contain this attribute */ - int (*convert_operator)(struct ldb_module *, TALLOC_CTX *ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *); - - union { - struct { - const char *remote_name; - } rename; - - struct { - const char *remote_name; - - /* Convert local to remote data */ - ldb_map_convert_func convert_local; - - /* Convert remote to local data */ - /* an entry can have convert_remote set to NULL, as long as there as an entry with the same local_name - * that is non-NULL before it. */ - ldb_map_convert_func convert_remote; - } convert; - - struct { - /* Generate the local attribute from remote message */ - struct ldb_message_element *(*generate_local)(struct ldb_module *, TALLOC_CTX *mem_ctx, const char *remote_attr, const struct ldb_message *remote); - - /* Update remote message with information from local message */ - void (*generate_remote)(struct ldb_module *, const char *local_attr, const struct ldb_message *old, struct ldb_message *remote, struct ldb_message *local); - - /* Name(s) for this attribute on the remote server. This is an array since - * one local attribute's data can be split up into several attributes - * remotely */ - const char *remote_names[LDB_MAP_MAX_REMOTE_NAMES]; - - /* Names of additional remote attributes - * required for the generation. NULL - * indicates that `local_attr' suffices. */ - /* -#define LDB_MAP_MAX_SELF_ATTRIBUTES 10 - const char *self_attrs[LDB_MAP_MAX_SELF_ATTRIBUTES]; - */ - } generate; - } u; -}; - - -#define LDB_MAP_MAX_SUBCLASSES 10 -#define LDB_MAP_MAX_MUSTS 10 -#define LDB_MAP_MAX_MAYS 50 - -/* map from local to remote objectClass */ -struct ldb_map_objectclass { - const char *local_name; - const char *remote_name; - const char *base_classes[LDB_MAP_MAX_SUBCLASSES]; - const char *musts[LDB_MAP_MAX_MUSTS]; - const char *mays[LDB_MAP_MAX_MAYS]; -}; - - -/* private context data */ -struct ldb_map_context { - struct ldb_map_attribute *attribute_maps; - /* NOTE: Always declare base classes first here */ - const struct ldb_map_objectclass *objectclass_maps; - - /* Remote (often operational) attributes that should be added - * to any wildcard search */ - const char * const *wildcard_attributes; - - /* struct ldb_context *mapped_ldb; */ - struct ldb_dn *local_base_dn; - struct ldb_dn *remote_base_dn; -}; - -/* Global private data */ -struct map_private { - void *caller_private; - struct ldb_map_context *context; -}; - -/* Initialize global private data. */ -int ldb_map_init(struct ldb_module *module, const struct ldb_map_attribute *attrs, - const struct ldb_map_objectclass *ocls, - const char * const *wildcard_attributes, - const char *name); - -/* get copy of map_ops */ -struct ldb_module_ops -ldb_map_get_ops(void); - -#endif /* __LDB_MAP_H__ */ diff --git a/source4/lib/ldb/modules/ldb_map_inbound.c b/source4/lib/ldb/modules/ldb_map_inbound.c deleted file mode 100644 index 9cc1b4e89f..0000000000 --- a/source4/lib/ldb/modules/ldb_map_inbound.c +++ /dev/null @@ -1,723 +0,0 @@ -/* - 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 2 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "ldb_includes.h" - -#include "ldb_map.h" -#include "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_alloc_linearized(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 */ - if (ldb_msg_add_empty(msg, IS_MAPPED, LDB_FLAG_MOD_ADD, NULL) != 0) { - return LDB_ERR_OPERATIONS_ERROR; - } - dn = ldb_dn_alloc_linearized(msg, ac->remote_req->op.mod.message->dn); - 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; -} diff --git a/source4/lib/ldb/modules/ldb_map_outbound.c b/source4/lib/ldb/modules/ldb_map_outbound.c deleted file mode 100644 index 1ef1b36b20..0000000000 --- a/source4/lib/ldb/modules/ldb_map_outbound.c +++ /dev/null @@ -1,1289 +0,0 @@ -/* - ldb database mapping module - - Copyright (C) Jelmer Vernooij 2005 - Copyright (C) Martin Kuehl <mkhl@samba.org> 2006 - Copyright (C) Andrew Bartlett <abartlet@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 2 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, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. -*/ - -#include "ldb_includes.h" - -#include "ldb_map.h" -#include "ldb_map_private.h" - - -/* Mapping attributes - * ================== */ - -/* Select attributes that stay in the local partition. */ -static const char **map_attrs_select_local(struct ldb_module *module, void *mem_ctx, const char * const *attrs) -{ - const struct ldb_map_context *data = map_get_context(module); - const char **result; - int i, last; - - if (attrs == NULL) - return NULL; - - last = 0; - result = talloc_array(mem_ctx, const char *, 1); - if (result == NULL) { - goto failed; - } - result[0] = NULL; - - for (i = 0; attrs[i]; i++) { - /* Wildcards and ignored attributes are kept locally */ - if ((ldb_attr_cmp(attrs[i], "*") == 0) || - (!map_attr_check_remote(data, attrs[i]))) { - result = talloc_realloc(mem_ctx, result, const char *, last+2); - if (result == NULL) { - goto failed; - } - - result[last] = talloc_strdup(result, attrs[i]); - result[last+1] = NULL; - last++; - } - } - - return result; - -failed: - talloc_free(result); - map_oom(module); - return NULL; -} - -/* Collect attributes that are mapped into the remote partition. */ -static const char **map_attrs_collect_remote(struct ldb_module *module, void *mem_ctx, - const char * const *attrs) -{ - const struct ldb_map_context *data = map_get_context(module); - const char **result; - const struct ldb_map_attribute *map; - const char *name=NULL; - int i, j, last; - int ret; - - last = 0; - result = talloc_array(mem_ctx, const char *, 1); - if (result == NULL) { - goto failed; - } - result[0] = NULL; - - for (i = 0; attrs[i]; i++) { - /* Wildcards are kept remotely, too */ - if (ldb_attr_cmp(attrs[i], "*") == 0) { - const char **new_attrs = NULL; - ret = map_attrs_merge(module, mem_ctx, &new_attrs, attrs); - if (ret != LDB_SUCCESS) { - goto failed; - } - ret = map_attrs_merge(module, mem_ctx, &new_attrs, data->wildcard_attributes); - if (ret != LDB_SUCCESS) { - goto failed; - } - - attrs = new_attrs; - break; - } - } - - for (i = 0; attrs[i]; i++) { - /* Wildcards are kept remotely, too */ - if (ldb_attr_cmp(attrs[i], "*") == 0) { - /* Add all 'include in wildcard' attributes */ - name = attrs[i]; - goto named; - } - - /* Add remote names of mapped attrs */ - map = map_attr_find_local(data, attrs[i]); - if (map == NULL) { - continue; - } - - switch (map->type) { - case MAP_IGNORE: - continue; - - case MAP_KEEP: - name = attrs[i]; - goto named; - - case MAP_RENAME: - case MAP_CONVERT: - name = map->u.rename.remote_name; - goto named; - - case MAP_GENERATE: - /* Add all remote names of "generate" attrs */ - for (j = 0; map->u.generate.remote_names[j]; j++) { - result = talloc_realloc(mem_ctx, result, const char *, last+2); - if (result == NULL) { - goto failed; - } - - result[last] = talloc_strdup(result, map->u.generate.remote_names[j]); - result[last+1] = NULL; - last++; - } - continue; - } - - named: /* We found a single remote name, add that */ - result = talloc_realloc(mem_ctx, result, const char *, last+2); - if (result == NULL) { - goto failed; - } - - result[last] = talloc_strdup(result, name); - result[last+1] = NULL; - last++; - } - - return result; - -failed: - talloc_free(result); - map_oom(module); - return NULL; -} - -/* Split attributes that stay in the local partition from those that - * are mapped into the remote partition. */ -static int map_attrs_partition(struct ldb_module *module, void *mem_ctx, const char ***local_attrs, const char ***remote_attrs, const char * const *attrs) -{ - *local_attrs = map_attrs_select_local(module, mem_ctx, attrs); - *remote_attrs = map_attrs_collect_remote(module, mem_ctx, attrs); - - return 0; -} - -/* Mapping message elements - * ======================== */ - -/* Add an element to a message, overwriting any old identically named elements. */ -static int ldb_msg_replace(struct ldb_message *msg, const struct ldb_message_element *el) -{ - struct ldb_message_element *old; - - old = ldb_msg_find_element(msg, el->name); - - /* no local result, add as new element */ - if (old == NULL) { - if (ldb_msg_add_empty(msg, el->name, 0, &old) != 0) { - return -1; - } - talloc_free(old->name); - } - - /* copy new element */ - *old = *el; - - /* and make sure we reference the contents */ - if (!talloc_reference(msg->elements, el->name)) { - return -1; - } - if (!talloc_reference(msg->elements, el->values)) { - return -1; - } - - return 0; -} - -/* Map a message element back into the local partition. */ -static struct ldb_message_element *ldb_msg_el_map_remote(struct ldb_module *module, - void *mem_ctx, - const struct ldb_map_attribute *map, - const char *attr_name, - 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->values = talloc_array(el, struct ldb_val, old->num_values); - if (el->values == NULL) { - talloc_free(el); - map_oom(module); - return NULL; - } - - el->name = talloc_strdup(el, attr_name); - if (el->name == NULL) { - talloc_free(el); - map_oom(module); - return NULL; - } - - for (i = 0; i < old->num_values; i++) { - el->values[i] = ldb_val_map_remote(module, el->values, map, &old->values[i]); - /* Conversions might fail, in which case bail */ - if (!el->values[i].data) { - talloc_free(el); - return NULL; - } - el->num_values++; - } - - return el; -} - -/* Merge a remote message element into a local message. */ -static int ldb_msg_el_merge(struct ldb_module *module, struct ldb_message *local, - struct ldb_message *remote, const char *attr_name) -{ - const struct ldb_map_context *data = map_get_context(module); - const struct ldb_map_attribute *map; - struct ldb_message_element *old, *el=NULL; - const char *remote_name = NULL; - - /* We handle wildcards in ldb_msg_el_merge_wildcard */ - if (ldb_attr_cmp(attr_name, "*") == 0) { - return LDB_SUCCESS; - } - - map = map_attr_find_local(data, attr_name); - - /* Unknown attribute in remote message: - * skip, attribute was probably auto-generated */ - if (map == NULL) { - return LDB_SUCCESS; - } - - switch (map->type) { - case MAP_IGNORE: - break; - case MAP_CONVERT: - remote_name = map->u.convert.remote_name; - break; - case MAP_KEEP: - remote_name = attr_name; - break; - case MAP_RENAME: - remote_name = map->u.rename.remote_name; - break; - case MAP_GENERATE: - break; - } - - switch (map->type) { - case MAP_IGNORE: - return LDB_SUCCESS; - - case MAP_CONVERT: - if (map->u.convert.convert_remote == NULL) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "Skipping attribute '%s': " - "'convert_remote' not set\n", - attr_name); - return LDB_SUCCESS; - } - /* fall through */ - case MAP_KEEP: - case MAP_RENAME: - old = ldb_msg_find_element(remote, remote_name); - if (old) { - el = ldb_msg_el_map_remote(module, local, map, attr_name, old); - } else { - return LDB_ERR_NO_SUCH_ATTRIBUTE; - } - break; - - case MAP_GENERATE: - if (map->u.generate.generate_local == NULL) { - ldb_debug(module->ldb, LDB_DEBUG_ERROR, "ldb_map: " - "Skipping attribute '%s': " - "'generate_local' not set\n", - attr_name); - return LDB_SUCCESS; - } - - el = map->u.generate.generate_local(module, local, attr_name, remote); - if (!el) { - /* Generation failure is probably due to lack of source attributes */ - return LDB_ERR_NO_SUCH_ATTRIBUTE; - } - break; - } - - if (el == NULL) { - return LDB_ERR_NO_SUCH_ATTRIBUTE; - } - - return ldb_msg_replace(local, el); -} - -/* Handle wildcard parts of merging a remote message element into a local message. */ -static int ldb_msg_el_merge_wildcard(struct ldb_module *module, struct ldb_message *local, - struct ldb_message *remote) -{ - const struct ldb_map_context *data = map_get_context(module); - const struct ldb_map_attribute *map = map_attr_find_local(data, "*"); - struct ldb_message_element *el=NULL; - int i, ret; - - /* Perhaps we have a mapping for "*" */ - if (map && map->type == MAP_KEEP) { - /* We copy everything over, and hope that anything with a - more specific rule is overwritten */ - for (i = 0; i < remote->num_elements; i++) { - el = ldb_msg_el_map_remote(module, local, map, remote->elements[i].name, - &remote->elements[i]); - if (el == NULL) { - return LDB_ERR_OPERATIONS_ERROR; - } - - ret = ldb_msg_replace(local, el); - if (ret) { - return ret; - } - } - } - - /* Now walk the list of possible mappings, and apply each */ - for (i = 0; data->attribute_maps[i].local_name; i++) { - ret = ldb_msg_el_merge(module, local, remote, - data->attribute_maps[i].local_name); - if (ret == LDB_ERR_NO_SUCH_ATTRIBUTE) { - continue; - } else if (ret) { - return ret; - } else { - continue; - } - } - - return LDB_SUCCESS; -} - -/* Mapping messages - * ================ */ - -/* Merge two local messages into a single one. */ -static int ldb_msg_merge_local(struct ldb_module *module, struct ldb_message *msg1, struct ldb_message *msg2) -{ - int i, ret; - - for (i = 0; i < msg2->num_elements; i++) { - ret = ldb_msg_replace(msg1, &msg2->elements[i]); - if (ret) { - return ret; - } - } - - return LDB_SUCCESS; -} - -/* Merge a local and a remote message into a single local one. */ -static int ldb_msg_merge_remote(struct map_context *ac, struct ldb_message *local, - struct ldb_message *remote) -{ - int i, ret; - const char * const *attrs = ac->all_attrs; - if (!attrs) { - ret = ldb_msg_el_merge_wildcard(ac->module, local, remote); - if (ret) { - return ret; - } - } - - for (i = 0; attrs && attrs[i]; i++) { - if (ldb_attr_cmp(attrs[i], "*") == 0) { - ret = ldb_msg_el_merge_wildcard(ac->module, local, remote); - if (ret) { - return ret; - } - break; - } - } - - /* Try to map each attribute back; - * Add to local message is possible, - * Overwrite old local attribute if necessary */ - for (i = 0; attrs && attrs[i]; i++) { - ret = ldb_msg_el_merge(ac->module, local, remote, - attrs[i]); - if (ret == LDB_ERR_NO_SUCH_ATTRIBUTE) { - } else if (ret) { - return ret; - } - } - - return LDB_SUCCESS; -} - -/* Mapping search results - * ====================== */ - -/* Map a search result back into the local partition. */ -static int map_reply_remote(struct map_context *ac, struct ldb_reply *ares) -{ - struct ldb_message *msg; - struct ldb_dn *dn; - int ret; - - /* There is no result message, skip */ - if (ares->type != LDB_REPLY_ENTRY) { - return 0; - } - - /* Create a new result message */ - msg = ldb_msg_new(ares); - if (msg == NULL) { - map_oom(ac->module); - return -1; - } - - /* Merge remote message into new message */ - ret = ldb_msg_merge_remote(ac, msg, ares->message); - if (ret) { - talloc_free(msg); - return ret; - } - - /* Create corresponding local DN */ - dn = ldb_dn_map_rebase_remote(ac->module, msg, ares->message->dn); - if (dn == NULL) { - talloc_free(msg); - return -1; - } - msg->dn = dn; - - /* Store new message with new DN as the result */ - talloc_free(ares->message); - ares->message = msg; - - return 0; -} - -/* Mapping parse trees - * =================== */ - -/* Check whether a parse tree can safely be split in two. */ -static bool ldb_parse_tree_check_splittable(const struct ldb_parse_tree *tree) -{ - const struct ldb_parse_tree *subtree = tree; - bool negate = false; - - while (subtree) { - switch (subtree->operation) { - case LDB_OP_NOT: - negate = !negate; - subtree = subtree->u.isnot.child; - continue; - - case LDB_OP_AND: - return !negate; /* if negate: False */ - - case LDB_OP_OR: - return negate; /* if negate: True */ - - default: - return true; /* simple parse tree */ - } - } - - return true; /* no parse tree */ -} - -/* Collect a list of attributes required to match a given parse tree. */ -static int ldb_parse_tree_collect_attrs(struct ldb_module *module, void *mem_ctx, const char ***attrs, const struct ldb_parse_tree *tree) -{ - const char **new_attrs; - int i, ret; - - if (tree == NULL) { - return 0; - } - - switch (tree->operation) { - case LDB_OP_OR: - case LDB_OP_AND: /* attributes stored in list of subtrees */ - for (i = 0; i < tree->u.list.num_elements; i++) { - ret = ldb_parse_tree_collect_attrs(module, mem_ctx, - attrs, tree->u.list.elements[i]); - if (ret) { - return ret; - } - } - return 0; - - case LDB_OP_NOT: /* attributes stored in single subtree */ - return ldb_parse_tree_collect_attrs(module, mem_ctx, attrs, tree->u.isnot.child); - - default: /* single attribute in tree */ - new_attrs = ldb_attr_list_copy_add(mem_ctx, *attrs, tree->u.equality.attr); - talloc_free(*attrs); - *attrs = new_attrs; - return 0; - } - - return -1; -} - -static int map_subtree_select_local(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree); - -/* Select a negated subtree that queries attributes in the local partition */ -static int map_subtree_select_local_not(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - struct ldb_parse_tree *child; - int ret; - - /* Prepare new tree */ - *new = talloc_memdup(mem_ctx, tree, sizeof(struct ldb_parse_tree)); - if (*new == NULL) { - map_oom(module); - return -1; - } - - /* Generate new subtree */ - ret = map_subtree_select_local(module, *new, &child, tree->u.isnot.child); - if (ret) { - talloc_free(*new); - return ret; - } - - /* Prune tree without subtree */ - if (child == NULL) { - talloc_free(*new); - *new = NULL; - return 0; - } - - (*new)->u.isnot.child = child; - - return ret; -} - -/* Select a list of subtrees that query attributes in the local partition */ -static int map_subtree_select_local_list(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - int i, j, ret=0; - - /* Prepare new tree */ - *new = talloc_memdup(mem_ctx, tree, sizeof(struct ldb_parse_tree)); - if (*new == NULL) { - map_oom(module); - return -1; - } - - /* Prepare list of subtrees */ - (*new)->u.list.num_elements = 0; - (*new)->u.list.elements = talloc_array(*new, struct ldb_parse_tree *, tree->u.list.num_elements); - if ((*new)->u.list.elements == NULL) { - map_oom(module); - talloc_free(*new); - return -1; - } - - /* Generate new list of subtrees */ - j = 0; - for (i = 0; i < tree->u.list.num_elements; i++) { - struct ldb_parse_tree *child; - ret = map_subtree_select_local(module, *new, &child, tree->u.list.elements[i]); - if (ret) { - talloc_free(*new); - return ret; - } - - if (child) { - (*new)->u.list.elements[j] = child; - j++; - } - } - - /* Prune tree without subtrees */ - if (j == 0) { - talloc_free(*new); - *new = NULL; - return 0; - } - - /* Fix subtree list size */ - (*new)->u.list.num_elements = j; - (*new)->u.list.elements = talloc_realloc(*new, (*new)->u.list.elements, struct ldb_parse_tree *, (*new)->u.list.num_elements); - - return ret; -} - -/* Select a simple subtree that queries attributes in the local partition */ -static int map_subtree_select_local_simple(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - /* Prepare new tree */ - *new = talloc_memdup(mem_ctx, tree, sizeof(struct ldb_parse_tree)); - if (*new == NULL) { - map_oom(module); - return -1; - } - - return 0; -} - -/* Select subtrees that query attributes in the local partition */ -static int map_subtree_select_local(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - const struct ldb_map_context *data = map_get_context(module); - - if (tree == NULL) { - return 0; - } - - if (tree->operation == LDB_OP_NOT) { - return map_subtree_select_local_not(module, mem_ctx, new, tree); - } - - if (tree->operation == LDB_OP_AND || tree->operation == LDB_OP_OR) { - return map_subtree_select_local_list(module, mem_ctx, new, tree); - } - - if (map_attr_check_remote(data, tree->u.equality.attr)) { - *new = NULL; - return 0; - } - - return map_subtree_select_local_simple(module, mem_ctx, new, tree); -} - -static int map_subtree_collect_remote(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree); - -/* Collect a negated subtree that queries attributes in the remote partition */ -static int map_subtree_collect_remote_not(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - struct ldb_parse_tree *child; - int ret; - - /* Prepare new tree */ - *new = talloc_memdup(mem_ctx, tree, sizeof(struct ldb_parse_tree)); - if (*new == NULL) { - map_oom(module); - return -1; - } - - /* Generate new subtree */ - ret = map_subtree_collect_remote(module, *new, &child, tree->u.isnot.child); - if (ret) { - talloc_free(*new); - return ret; - } - - /* Prune tree without subtree */ - if (child == NULL) { - talloc_free(*new); - *new = NULL; - return 0; - } - - (*new)->u.isnot.child = child; - - return ret; -} - -/* Collect a list of subtrees that query attributes in the remote partition */ -static int map_subtree_collect_remote_list(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - int i, j, ret=0; - - /* Prepare new tree */ - *new = talloc_memdup(mem_ctx, tree, sizeof(struct ldb_parse_tree)); - if (*new == NULL) { - map_oom(module); - return -1; - } - - /* Prepare list of subtrees */ - (*new)->u.list.num_elements = 0; - (*new)->u.list.elements = talloc_array(*new, struct ldb_parse_tree *, tree->u.list.num_elements); - if ((*new)->u.list.elements == NULL) { - map_oom(module); - talloc_free(*new); - return -1; - } - - /* Generate new list of subtrees */ - j = 0; - for (i = 0; i < tree->u.list.num_elements; i++) { - struct ldb_parse_tree *child; - ret = map_subtree_collect_remote(module, *new, &child, tree->u.list.elements[i]); - if (ret) { - talloc_free(*new); - return ret; - } - - if (child) { - (*new)->u.list.elements[j] = child; - j++; - } - } - - /* Prune tree without subtrees */ - if (j == 0) { - talloc_free(*new); - *new = NULL; - return 0; - } - - /* Fix subtree list size */ - (*new)->u.list.num_elements = j; - (*new)->u.list.elements = talloc_realloc(*new, (*new)->u.list.elements, struct ldb_parse_tree *, (*new)->u.list.num_elements); - - return ret; -} - -/* Collect a simple subtree that queries attributes in the remote partition */ -int map_subtree_collect_remote_simple(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree, const struct ldb_map_attribute *map) -{ - const char *attr; - - /* Prepare new tree */ - *new = talloc(mem_ctx, struct ldb_parse_tree); - if (*new == NULL) { - map_oom(module); - return -1; - } - **new = *tree; - - if (map->type == MAP_KEEP) { - /* Nothing to do here */ - return 0; - } - - /* Store attribute and value in new tree */ - switch (tree->operation) { - case LDB_OP_PRESENT: - attr = map_attr_map_local(*new, map, tree->u.present.attr); - (*new)->u.present.attr = attr; - break; - case LDB_OP_SUBSTRING: - { - attr = map_attr_map_local(*new, map, tree->u.substring.attr); - (*new)->u.substring.attr = attr; - break; - } - case LDB_OP_EQUALITY: - attr = map_attr_map_local(*new, map, tree->u.equality.attr); - (*new)->u.equality.attr = attr; - break; - case LDB_OP_LESS: - case LDB_OP_GREATER: - case LDB_OP_APPROX: - attr = map_attr_map_local(*new, map, tree->u.comparison.attr); - (*new)->u.comparison.attr = attr; - break; - case LDB_OP_EXTENDED: - attr = map_attr_map_local(*new, map, tree->u.extended.attr); - (*new)->u.extended.attr = attr; - break; - default: /* unknown kind of simple subtree */ - talloc_free(*new); - return -1; - } - - if (attr == NULL) { - talloc_free(*new); - *new = NULL; - return 0; - } - - if (map->type == MAP_RENAME) { - /* Nothing more to do here, the attribute has been renamed */ - return 0; - } - - /* Store attribute and value in new tree */ - switch (tree->operation) { - case LDB_OP_PRESENT: - break; - case LDB_OP_SUBSTRING: - { - int i; - /* Map value */ - (*new)->u.substring.chunks = NULL; - for (i=0; tree->u.substring.chunks[i]; i++) { - (*new)->u.substring.chunks = talloc_realloc(*new, (*new)->u.substring.chunks, struct ldb_val *, i+2); - if (!(*new)->u.substring.chunks) { - talloc_free(*new); - *new = NULL; - return 0; - } - (*new)->u.substring.chunks[i] = talloc(*new, struct ldb_val); - if (!(*new)->u.substring.chunks[i]) { - talloc_free(*new); - *new = NULL; - return 0; - } - *(*new)->u.substring.chunks[i] = ldb_val_map_local(module, *new, map, tree->u.substring.chunks[i]); - (*new)->u.substring.chunks[i+1] = NULL; - } - break; - } - case LDB_OP_EQUALITY: - (*new)->u.equality.value = ldb_val_map_local(module, *new, map, &tree->u.equality.value); - break; - case LDB_OP_LESS: - case LDB_OP_GREATER: - case LDB_OP_APPROX: - (*new)->u.comparison.value = ldb_val_map_local(module, *new, map, &tree->u.comparison.value); - break; - case LDB_OP_EXTENDED: - (*new)->u.extended.value = ldb_val_map_local(module, *new, map, &tree->u.extended.value); - (*new)->u.extended.rule_id = talloc_strdup(*new, tree->u.extended.rule_id); - break; - default: /* unknown kind of simple subtree */ - talloc_free(*new); - return -1; - } - - return 0; -} - -/* Collect subtrees that query attributes in the remote partition */ -static int map_subtree_collect_remote(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree) -{ - const struct ldb_map_context *data = map_get_context(module); - const struct ldb_map_attribute *map; - - if (tree == NULL) { - return 0; - } - - if (tree->operation == LDB_OP_NOT) { - return map_subtree_collect_remote_not(module, mem_ctx, new, tree); - } - - if ((tree->operation == LDB_OP_AND) || (tree->operation == LDB_OP_OR)) { - return map_subtree_collect_remote_list(module, mem_ctx, new, tree); - } - - if (!map_attr_check_remote(data, tree->u.equality.attr)) { - *new = NULL; - return 0; - } - - map = map_attr_find_local(data, tree->u.equality.attr); - if (map->convert_operator) { - return map->convert_operator(module, mem_ctx, new, tree); - } - - if (map->type == MAP_GENERATE) { - ldb_debug(module->ldb, LDB_DEBUG_WARNING, "ldb_map: " - "Skipping attribute '%s': " - "'convert_operator' not set\n", - tree->u.equality.attr); - *new = NULL; - return 0; - } - - return map_subtree_collect_remote_simple(module, mem_ctx, new, tree, map); -} - -/* Split subtrees that query attributes in the local partition from - * those that query the remote partition. */ -static int ldb_parse_tree_partition(struct ldb_module *module, void *local_ctx, void *remote_ctx, struct ldb_parse_tree **local_tree, struct ldb_parse_tree **remote_tree, const struct ldb_parse_tree *tree) -{ - int ret; - - *local_tree = NULL; - *remote_tree = NULL; - - /* No original tree */ - if (tree == NULL) { - return 0; - } - - /* Generate local tree */ - ret = map_subtree_select_local(module, local_ctx, local_tree, tree); - if (ret) { - return ret; - } - - /* Generate remote tree */ - ret = map_subtree_collect_remote(module, remote_ctx, remote_tree, tree); - if (ret) { - talloc_free(*local_tree); - return ret; - } - - return 0; -} - -/* Collect a list of attributes required either explicitly from a - * given list or implicitly from a given parse tree; split the - * collected list into local and remote parts. */ -static int map_attrs_collect_and_partition(struct ldb_module *module, struct map_context *ac, - const char * const *search_attrs, - const struct ldb_parse_tree *tree) -{ - void *tmp_ctx; - const char **tree_attrs; - const char **remote_attrs; - const char **local_attrs; - int ret; - - /* There is no tree, just partition the searched attributes */ - if (tree == NULL) { - ret = map_attrs_partition(module, ac, - &local_attrs, &remote_attrs, search_attrs); - if (ret == 0) { - ac->local_attrs = local_attrs; - ac->remote_attrs = remote_attrs; - ac->all_attrs = search_attrs; - } - return ret; - } - - /* Create context for temporary memory */ - tmp_ctx = talloc_new(ac); - if (tmp_ctx == NULL) { - goto oom; - } - - /* Prepare list of attributes from tree */ - tree_attrs = talloc_array(tmp_ctx, const char *, 1); - if (tree_attrs == NULL) { - talloc_free(tmp_ctx); - goto oom; - } - tree_attrs[0] = NULL; - - /* Collect attributes from tree */ - ret = ldb_parse_tree_collect_attrs(module, tmp_ctx, &tree_attrs, tree); - if (ret) { - goto done; - } - - /* Merge attributes from search operation */ - ret = map_attrs_merge(module, tmp_ctx, &tree_attrs, search_attrs); - if (ret) { - goto done; - } - - /* Split local from remote attributes */ - ret = map_attrs_partition(module, ac, &local_attrs, - &remote_attrs, tree_attrs); - - if (ret == 0) { - ac->local_attrs = local_attrs; - ac->remote_attrs = remote_attrs; - talloc_steal(ac, tree_attrs); - ac->all_attrs = tree_attrs; - } -done: - /* Free temporary memory */ - talloc_free(tmp_ctx); - return ret; - -oom: - map_oom(module); - return -1; -} - - -/* Outbound requests: search - * ========================= */ - -/* Pass a merged search result up the callback chain. */ -int map_up_callback(struct ldb_context *ldb, const struct ldb_request *req, struct ldb_reply *ares) -{ - int i; - - /* No callback registered, stop */ - if (req->callback == NULL) { - return LDB_SUCCESS; - } - - /* Only records need special treatment */ - if (ares->type != LDB_REPLY_ENTRY) { - return req->callback(ldb, req->context, ares); - } - - /* Merged result doesn't match original query, skip */ - if (!ldb_match_msg(ldb, ares->message, req->op.search.tree, req->op.search.base, req->op.search.scope)) { - ldb_debug(ldb, LDB_DEBUG_TRACE, "ldb_map: " - "Skipping record '%s': " - "doesn't match original search\n", - ldb_dn_get_linearized(ares->message->dn)); - return LDB_SUCCESS; - } - - /* Limit result to requested attrs */ - if ((req->op.search.attrs) && (!ldb_attr_in_list(req->op.search.attrs, "*"))) { - for (i = 0; i < ares->message->num_elements; ) { - struct ldb_message_element *el = &ares->message->elements[i]; - if (!ldb_attr_in_list(req->op.search.attrs, el->name)) { - ldb_msg_remove_element(ares->message, el); - } else { - i++; - } - } - } - - return req->callback(ldb, req->context, ares); -} - -/* Merge the remote and local parts of a search result. */ -int map_local_merge_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares) -{ - struct map_search_context *sc; - int ret; - - if (context == NULL || ares == NULL) { - ldb_set_errstring(ldb, talloc_asprintf(ldb, "ldb_map: " - "NULL Context or Result in `map_local_merge_callback`")); - return LDB_ERR_OPERATIONS_ERROR; - } - - sc = talloc_get_type(context, struct map_search_context); - - switch (ares->type) { - case LDB_REPLY_ENTRY: - /* We have already found a local record */ - if (sc->local_res) { - ldb_set_errstring(ldb, talloc_asprintf(ldb, "ldb_map: " - "Too many results to base search for local entry")); - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* Store local result */ - sc->local_res = ares; - - /* Merge remote into local message */ - ret = ldb_msg_merge_local(sc->ac->module, ares->message, sc->remote_res->message); - if (ret) { - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - return map_up_callback(ldb, sc->ac->orig_req, ares); - - case LDB_REPLY_DONE: - /* No local record found, continue with remote record */ - if (sc->local_res == NULL) { - return map_up_callback(ldb, sc->ac->orig_req, sc->remote_res); - } - return LDB_SUCCESS; - - default: - ldb_set_errstring(ldb, talloc_asprintf(ldb, "ldb_map: " - "Unexpected result type in base search for local entry")); - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } -} - -/* Search the local part of a remote search result. */ -int map_remote_search_callback(struct ldb_context *ldb, void *context, struct ldb_reply *ares) -{ - struct map_context *ac; - struct map_search_context *sc; - struct ldb_request *req; - int ret; - - if (context == NULL || ares == NULL) { - ldb_set_errstring(ldb, talloc_asprintf(ldb, "ldb_map: " - "NULL Context or Result in `map_remote_search_callback`")); - return LDB_ERR_OPERATIONS_ERROR; - } - - ac = talloc_get_type(context, struct map_context); - - /* It's not a record, stop searching */ - if (ares->type != LDB_REPLY_ENTRY) { - return map_up_callback(ldb, ac->orig_req, ares); - } - - /* Map result record into a local message */ - ret = map_reply_remote(ac, ares); - if (ret) { - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* There is no local db, stop searching */ - if (!map_check_local_db(ac->module)) { - return map_up_callback(ldb, ac->orig_req, ares); - } - - /* Prepare local search context */ - sc = map_init_search_context(ac, ares); - if (sc == NULL) { - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - /* Prepare local search request */ - /* TODO: use GUIDs here instead? */ - - ac->search_reqs = talloc_realloc(ac, ac->search_reqs, struct ldb_request *, ac->num_searches + 2); - if (ac->search_reqs == NULL) { - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - - ac->search_reqs[ac->num_searches] - = req = map_search_base_req(ac, ares->message->dn, - NULL, NULL, sc, map_local_merge_callback); - if (req == NULL) { - talloc_free(sc); - talloc_free(ares); - return LDB_ERR_OPERATIONS_ERROR; - } - ac->num_searches++; - ac->search_reqs[ac->num_searches] = NULL; - - return ldb_next_request(ac->module, req); -} - -/* Search a record. */ -int map_search(struct ldb_module *module, struct ldb_request *req) -{ - struct ldb_handle *h; - struct map_context *ac; - struct ldb_parse_tree *local_tree, *remote_tree; - int ret; - - const char *wildcard[] = { "*", NULL }; - const char * const *attrs; - - if (!module->private_data) /* if we're not yet initialized, go to the next module */ - return ldb_next_request(module, req); - - /* Do not manipulate our control entries */ - if (ldb_dn_is_special(req->op.search.base)) - return ldb_next_request(module, req); - - /* No mapping requested, skip to next module */ - if ((req->op.search.base) && (!ldb_dn_check_local(module, req->op.search.base))) { - return ldb_next_request(module, req); - } - - /* TODO: How can we be sure about which partition we are - * targetting when there is no search base? */ - - /* 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); - - ac->search_reqs = talloc_array(ac, struct ldb_request *, 2); - if (ac->search_reqs == NULL) { - talloc_free(h); - return LDB_ERR_OPERATIONS_ERROR; - } - ac->num_searches = 1; - ac->search_reqs[1] = NULL; - - /* Prepare the remote operation */ - ac->search_reqs[0] = talloc(ac, struct ldb_request); - if (ac->search_reqs[0] == NULL) { - goto oom; - } - - *(ac->search_reqs[0]) = *req; /* copy the request */ - - ac->search_reqs[0]->handle = h; /* return our own handle to deal with this call */ - - ac->search_reqs[0]->context = ac; - ac->search_reqs[0]->callback = map_remote_search_callback; - - /* It is easier to deal with the two different ways of - * expressing the wildcard in the same codepath */ - attrs = req->op.search.attrs; - if (attrs == NULL) { - attrs = wildcard; - } - - /* Split local from remote attrs */ - ret = map_attrs_collect_and_partition(module, ac, - attrs, req->op.search.tree); - if (ret) { - goto failed; - } - - ac->search_reqs[0]->op.search.attrs = ac->remote_attrs; - - /* Split local from remote tree */ - ret = ldb_parse_tree_partition(module, ac, ac->search_reqs[0], - &local_tree, &remote_tree, - req->op.search.tree); - if (ret) { - goto failed; - } - - if (((local_tree != NULL) && (remote_tree != NULL)) && - (!ldb_parse_tree_check_splittable(req->op.search.tree))) { - /* The query can't safely be split, enumerate the remote partition */ - local_tree = NULL; - remote_tree = NULL; - } - - if (local_tree == NULL) { - /* Construct default local parse tree */ - local_tree = talloc_zero(ac, struct ldb_parse_tree); - if (local_tree == NULL) { - map_oom(ac->module); - goto failed; - } - - local_tree->operation = LDB_OP_PRESENT; - local_tree->u.present.attr = talloc_strdup(local_tree, IS_MAPPED); - } - if (remote_tree == NULL) { - /* Construct default remote parse tree */ - remote_tree = ldb_parse_tree(ac->search_reqs[0], NULL); - if (remote_tree == NULL) { - goto failed; - } - } - - ac->local_tree = local_tree; - ac->search_reqs[0]->op.search.tree = remote_tree; - - ldb_set_timeout_from_prev_req(module->ldb, req, ac->search_reqs[0]); - - h->state = LDB_ASYNC_INIT; - h->status = LDB_SUCCESS; - - ac->step = MAP_SEARCH_REMOTE; - - ret = ldb_next_remote_request(module, ac->search_reqs[0]); - if (ret == LDB_SUCCESS) { - req->handle = h; - } - return ret; - -oom: - map_oom(module); -failed: - talloc_free(h); - return LDB_ERR_OPERATIONS_ERROR; -} diff --git a/source4/lib/ldb/modules/ldb_map_private.h b/source4/lib/ldb/modules/ldb_map_private.h deleted file mode 100644 index 2c35097069..0000000000 --- a/source4/lib/ldb/modules/ldb_map_private.h +++ /dev/null @@ -1,117 +0,0 @@ - -/* A handy macro to report Out of Memory conditions */ -#define map_oom(module) ldb_set_errstring(module->ldb, talloc_asprintf(module, "Out of Memory")); - -/* The type of search callback functions */ -typedef int (*ldb_search_callback)(struct ldb_context *, void *, struct ldb_reply *); - -/* The special DN from which the local and remote base DNs are fetched */ -#define MAP_DN_NAME "@MAP" -#define MAP_DN_FROM "@FROM" -#define MAP_DN_TO "@TO" - -/* Private data structures - * ======================= */ - -/* Context data for mapped requests */ -struct map_context { - enum map_step { - MAP_SEARCH_REMOTE, - MAP_ADD_REMOTE, - MAP_ADD_LOCAL, - MAP_SEARCH_SELF_MODIFY, - MAP_MODIFY_REMOTE, - MAP_MODIFY_LOCAL, - MAP_SEARCH_SELF_DELETE, - MAP_DELETE_REMOTE, - MAP_DELETE_LOCAL, - MAP_SEARCH_SELF_RENAME, - MAP_RENAME_REMOTE, - MAP_RENAME_FIXUP, - MAP_RENAME_LOCAL - } step; - - struct ldb_module *module; - - struct ldb_dn *local_dn; - const struct ldb_parse_tree *local_tree; - const char * const *local_attrs; - const char * const *remote_attrs; - const char * const *all_attrs; - - struct ldb_request *orig_req; - struct ldb_request *local_req; - struct ldb_request *remote_req; - struct ldb_request *down_req; - struct ldb_request *search_req; - - /* for search, we may have a lot of contexts */ - int num_searches; - struct ldb_request **search_reqs; -}; - -/* Context data for mapped search requests */ -struct map_search_context { - struct map_context *ac; - struct ldb_reply *local_res; - struct ldb_reply *remote_res; -}; - - -/* Common operations - * ================= */ - -/* The following definitions come from lib/ldb/modules/ldb_map.c */ -const struct ldb_map_context *map_get_context(struct ldb_module *module); -struct map_search_context *map_init_search_context(struct map_context *ac, struct ldb_reply *ares); -struct ldb_handle *map_init_handle(struct ldb_request *req, struct ldb_module *module); - -int ldb_next_remote_request(struct ldb_module *module, struct ldb_request *request); - -bool map_check_local_db(struct ldb_module *module); -bool map_attr_check_remote(const struct ldb_map_context *data, const char *attr); -bool ldb_dn_check_local(struct ldb_module *module, struct ldb_dn *dn); - -const struct ldb_map_attribute *map_attr_find_local(const struct ldb_map_context *data, const char *name); -const struct ldb_map_attribute *map_attr_find_remote(const struct ldb_map_context *data, const char *name); - -const char *map_attr_map_local(void *mem_ctx, const struct ldb_map_attribute *map, const char *attr); -const char *map_attr_map_remote(void *mem_ctx, const struct ldb_map_attribute *map, const char *attr); -int map_attrs_merge(struct ldb_module *module, void *mem_ctx, const char ***attrs, const char * const *more_attrs); - -struct ldb_val ldb_val_map_local(struct ldb_module *module, void *mem_ctx, const struct ldb_map_attribute *map, const struct ldb_val *val); -struct ldb_val ldb_val_map_remote(struct ldb_module *module, void *mem_ctx, const struct ldb_map_attribute *map, const struct ldb_val *val); - -struct ldb_dn *ldb_dn_map_local(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn); -struct ldb_dn *ldb_dn_map_remote(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn); -struct ldb_dn *ldb_dn_map_rebase_remote(struct ldb_module *module, void *mem_ctx, struct ldb_dn *dn); - -struct ldb_request *map_search_base_req(struct map_context *ac, struct ldb_dn *dn, const char * const *attrs, const struct ldb_parse_tree *tree, void *context, ldb_search_callback callback); -struct ldb_request *map_search_self_req(struct map_context *ac, struct ldb_dn *dn); -struct ldb_request *map_build_fixup_req(struct map_context *ac, struct ldb_dn *olddn, struct ldb_dn *newdn); - -int map_subtree_collect_remote_simple(struct ldb_module *module, void *mem_ctx, struct ldb_parse_tree **new, const struct ldb_parse_tree *tree, const struct ldb_map_attribute *map); - -/* LDB Requests - * ============ */ - -/* The following definitions come from lib/ldb/modules/ldb_map_inbound.c */ -int map_add_do_remote(struct ldb_handle *handle); -int map_add_do_local(struct ldb_handle *handle); -int map_add(struct ldb_module *module, struct ldb_request *req); - -int map_modify_do_remote(struct ldb_handle *handle); -int map_modify_do_local(struct ldb_handle *handle); -int map_modify(struct ldb_module *module, struct ldb_request *req); - -int map_delete_do_remote(struct ldb_handle *handle); -int map_delete_do_local(struct ldb_handle *handle); -int map_delete(struct ldb_module *module, struct ldb_request *req); - -int map_rename_do_remote(struct ldb_handle *handle); -int map_rename_do_fixup(struct ldb_handle *handle); -int map_rename_do_local(struct ldb_handle *handle); -int map_rename(struct ldb_module *module, struct ldb_request *req); - -/* The following definitions come from lib/ldb/modules/ldb_map_outbound.c */ -int map_search(struct ldb_module *module, struct ldb_request *req); |