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/*
ldb database library - map backend
Copyright (C) Jelmer Vernooij 2005
Development sponsored by the Google Summer of Code program
** NOTE! The following LGPL license applies to the ldb
** library. This does NOT imply that all of Samba is released
** under the LGPL
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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)
*/
struct ldb_map_context;
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 expressions that contain this attribute */
struct ldb_parse_tree *(*convert_operator) (struct ldb_map_context *, TALLOC_CTX *ctx, const struct ldb_parse_tree *);
union {
struct {
const char *remote_name;
} rename;
struct {
const char *remote_name;
struct ldb_val (*convert_local) (struct ldb_module *, TALLOC_CTX *, const struct ldb_val *);
/* 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. */
struct ldb_val (*convert_remote) (struct ldb_module *, TALLOC_CTX *, const struct ldb_val *);
} convert;
struct {
/* Generate the local attribute from remote message */
struct ldb_message_element *(*generate_local) (
struct ldb_module *,
TALLOC_CTX *ctx,
const char *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 *local,
struct ldb_message *remote_mp,
struct ldb_message *remote_fb);
/* 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 */
#define LDB_MAP_MAX_REMOTE_NAMES 10
const char *remote_names[LDB_MAP_MAX_REMOTE_NAMES];
} generate;
} u;
};
#define LDB_MAP_MAX_SUBCLASSES 10
#define LDB_MAP_MAX_MUSTS 10
#define LDB_MAP_MAX_MAYS 50
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];
};
struct ldb_map_context
{
struct ldb_map_attribute *attribute_maps;
/* NOTE: Always declare base classes first here */
const struct ldb_map_objectclass *objectclass_maps;
struct ldb_context *mapped_ldb;
};
#endif /* __LDB_MAP_H__ */
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