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/*
ldb database module
Copyright (C) Stefan Metzmacher 2006
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 winsdb module
*
* Description: verify winsdb records before they're written to disk
*
* Author: Stefan Metzmacher
*/
#include "includes.h"
#include "nbt_server/nbt_server.h"
#include "nbt_server/wins/winsdb.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "lib/ldb/include/ldb_private.h"
/* add_record: do things with the sambaPassword attribute */
static int wins_ldb_verify(struct ldb_module *module, struct ldb_request *req, const struct ldb_message *msg)
{
struct winsdb_handle *h = talloc_get_type(ldb_get_opaque(module->ldb, "winsdb_handle"),
struct winsdb_handle);
char *error = NULL;
if (!h) {
error = talloc_strdup(module, "WINS_LDB: INTERNAL ERROR: no winsdb_handle present!");
ldb_debug(module->ldb, LDB_DEBUG_FATAL, "%s", error);
ldb_set_errstring(module->ldb, error);
return LDB_ERR_OTHER;
}
switch (h->caller) {
case WINSDB_HANDLE_CALLER_NBTD:
case WINSDB_HANDLE_CALLER_WREPL:
/* we trust our nbt and wrepl code ... */
return ldb_next_request(module, req);
case WINSDB_HANDLE_CALLER_ADMIN:
error = talloc_strdup(module, "WINS_LDB: TODO verify add/modify for WINSDB_HANDLE_CALLER_ADMIN");
ldb_debug(module->ldb, LDB_DEBUG_WARNING, "%s\n", error);
return ldb_next_request(module, req);
}
return LDB_ERR_OTHER;
}
static int wins_ldb_request(struct ldb_module *module, struct ldb_request *req)
{
const struct ldb_message *msg = req->op.mod.message;
switch (req->operation) {
case LDB_REQ_ADD:
msg = req->op.add.message;
break;
case LDB_REQ_MODIFY:
msg = req->op.mod.message;
break;
default:
goto call_next;
}
if (ldb_dn_is_special(msg->dn)) goto call_next;
return wins_ldb_verify(module, req, msg);
call_next:
return ldb_next_request(module, req);
}
static const struct ldb_module_ops wins_ldb_ops = {
.name = "wins_ldb",
.request = wins_ldb_request
};
/* the init function */
struct ldb_module *wins_ldb_module_init(struct ldb_context *ldb, const char *options[])
{
struct ldb_module *ctx;
struct winsdb_handle *h;
const char *owner;
int ret;
ctx = talloc(ldb, struct ldb_module);
if (!ctx) return NULL;
ctx->private_data = NULL;
ctx->ldb = ldb;
ctx->prev = ctx->next = NULL;
ctx->ops = &wins_ldb_ops;
owner = lp_parm_string(-1, "winsdb", "local_owner");
if (!owner) {
owner = iface_n_ip(0);
if (!owner) {
owner = "0.0.0.0";
}
}
h = talloc(ctx, struct winsdb_handle);
if (!h) goto failed;
h->ldb = ldb;
h->caller = WINSDB_HANDLE_CALLER_ADMIN;
h->local_owner = talloc_strdup(h, owner);
if (!h->local_owner) goto failed;
ret = ldb_set_opaque(ldb, "winsdb_handle", h);
if (ret != LDB_SUCCESS) goto failed;
return ctx;
failed:
talloc_free(ctx);
return NULL;
}
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