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/*
ldb database library
Copyright (C) Andrew Tridgell 2004
** 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
*/
/*
* Name: ldb
*
* Component: ldb core API
*
* Description: core API routines interfacing to ldb backends
*
* Author: Andrew Tridgell
*/
#include "includes.h"
#include "ldb/include/ldb.h"
#include "ldb/include/ldb_private.h"
/*
initialise a ldb context
The mem_ctx is optional
*/
struct ldb_context *ldb_init(void *mem_ctx)
{
struct ldb_context *ldb = talloc_zero(mem_ctx, struct ldb_context);
int ret;
ret = ldb_setup_wellknown_attributes(ldb);
if (ret != 0) {
talloc_free(ldb);
return NULL;
}
return ldb;
}
/*
connect to a database. The URL can either be one of the following forms
ldb://path
ldapi://path
flags is made up of LDB_FLG_*
the options are passed uninterpreted to the backend, and are
backend specific
*/
int ldb_connect(struct ldb_context *ldb, const char *url, unsigned int flags, const char *options[])
{
int ret;
if (strncmp(url, "tdb:", 4) == 0 ||
strchr(url, ':') == NULL) {
ret = ltdb_connect(ldb, url, flags, options);
}
#if HAVE_ILDAP
else if (strncmp(url, "ldap", 4) == 0) {
ret = ildb_connect(ldb, url, flags, options);
}
#elif HAVE_LDAP
else if (strncmp(url, "ldap", 4) == 0) {
ret = lldb_connect(ldb, url, flags, options);
}
#endif
#if HAVE_SQLITE3
else if (strncmp(url, "sqlite:", 7) == 0) {
ret = lsqlite3_connect(ldb, url, flags, options);
}
#endif
else {
ldb_debug(ldb, LDB_DEBUG_FATAL, "Unable to find backend for '%s'\n", url);
return -1;
}
if (ret != 0) {
ldb_debug(ldb, LDB_DEBUG_ERROR, "Failed to connect to '%s'\n", url);
return ret;
}
if (ldb_load_modules(ldb, options) != 0) {
ldb_debug(ldb, LDB_DEBUG_FATAL, "Unable to load modules for '%s'\n", url);
return -1;
}
return 0;
}
/*
search the database given a LDAP-like search expression
return the number of records found, or -1 on error
Use talloc_free to free the ldb_message returned in 'res'
*/
int ldb_search(struct ldb_context *ldb,
const struct ldb_dn *base,
enum ldb_scope scope,
const char *expression,
const char * const *attrs, struct ldb_message ***res)
{
return ldb->modules->ops->search(ldb->modules, base, scope, expression, attrs, res);
}
/*
search the database given a LDAP-like search expression
return the number of records found, or -1 on error
Use talloc_free to free the ldb_message returned in 'res'
*/
int ldb_search_bytree(struct ldb_context *ldb,
const struct ldb_dn *base,
enum ldb_scope scope,
struct ldb_parse_tree *tree,
const char * const *attrs, struct ldb_message ***res)
{
return ldb->modules->ops->search_bytree(ldb->modules, base, scope, tree, attrs, res);
}
/*
add a record to the database. Will fail if a record with the given class and key
already exists
*/
int ldb_add(struct ldb_context *ldb,
const struct ldb_message *message)
{
return ldb->modules->ops->add_record(ldb->modules, message);
}
/*
modify the specified attributes of a record
*/
int ldb_modify(struct ldb_context *ldb,
const struct ldb_message *message)
{
return ldb->modules->ops->modify_record(ldb->modules, message);
}
/*
delete a record from the database
*/
int ldb_delete(struct ldb_context *ldb, const struct ldb_dn *dn)
{
return ldb->modules->ops->delete_record(ldb->modules, dn);
}
/*
rename a record in the database
*/
int ldb_rename(struct ldb_context *ldb, const struct ldb_dn *olddn, const struct ldb_dn *newdn)
{
return ldb->modules->ops->rename_record(ldb->modules, olddn, newdn);
}
/*
create a named lock
*/
int ldb_lock(struct ldb_context *ldb, const char *lockname)
{
return ldb->modules->ops->named_lock(ldb->modules, lockname);
}
/*
release a named lock
*/
int ldb_unlock(struct ldb_context *ldb, const char *lockname)
{
return ldb->modules->ops->named_unlock(ldb->modules, lockname);
}
/*
return extended error information
*/
const char *ldb_errstring(struct ldb_context *ldb)
{
if (ldb->modules == NULL) {
return "ldb not connected";
}
return ldb->modules->ops->errstring(ldb->modules);
}
/*
set backend specific opaque parameters
*/
int ldb_set_opaque(struct ldb_context *ldb, const char *name, void *value)
{
struct ldb_opaque *o = talloc(ldb, struct ldb_opaque);
if (o == NULL) {
ldb_oom(ldb);
return -1;
}
o->next = ldb->opaque;
o->name = name;
o->value = value;
ldb->opaque = o;
return 0;
}
/*
get a previously set opaque value
*/
void *ldb_get_opaque(struct ldb_context *ldb, const char *name)
{
struct ldb_opaque *o;
for (o=ldb->opaque;o;o=o->next) {
if (strcmp(o->name, name) == 0) {
return o->value;
}
}
return NULL;
}
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