/* 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 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ /* * Name: ldb * * Component: ldb winsdb module * * Description: verify winsdb records before they're written to disk * * Author: Stefan Metzmacher */ #include "includes.h" #include "lib/events/events.h" #include "nbt_server/nbt_server.h" #include "nbt_server/wins/winsdb.h" #include #include "system/network.h" #include "lib/socket/netif.h" #include "param/param.h" static int wins_ldb_verify(struct ldb_module *module, struct ldb_request *req) { struct ldb_context *ldb = ldb_module_get_ctx(module); struct winsdb_handle *h = talloc_get_type(ldb_get_opaque(ldb, "winsdb_handle"), struct winsdb_handle); const struct ldb_message *msg; switch (req->operation) { case LDB_ADD: msg = req->op.add.message; break; case LDB_MODIFY: msg = req->op.mod.message; break; default: return ldb_next_request(module, req); } /* do not manipulate our control entries */ if (ldb_dn_is_special(msg->dn)) { return ldb_next_request(module, req); } if (!h) { ldb_debug_set(ldb, LDB_DEBUG_FATAL, "%s", "WINS_LDB: INTERNAL ERROR: no winsdb_handle present!"); 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: ldb_debug(ldb, LDB_DEBUG_WARNING, "%s\n", "WINS_LDB: TODO verify add/modify for WINSDB_HANDLE_CALLER_ADMIN"); return ldb_next_request(module, req); } return LDB_ERR_OTHER; } static int wins_ldb_init(struct ldb_module *module) { struct ldb_context *ldb = ldb_module_get_ctx(module); struct winsdb_handle *h; const char *owner; struct loadparm_context *lp_ctx = ldb_get_opaque(ldb, "loadparm"); ldb_module_set_private(module, NULL); owner = lpcfg_parm_string(lp_ctx, NULL, "winsdb", "local_owner"); if (!owner) { struct interface *ifaces; load_interface_list(module, lp_ctx, &ifaces); owner = iface_list_n_ip(ifaces, 0); if (!owner) { owner = "0.0.0.0"; } } h = talloc_zero(module, 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; return ldb_set_opaque(ldb, "winsdb_handle", h); failed: talloc_free(h); return LDB_ERR_OTHER; } static const struct ldb_module_ops ldb_wins_ldb_module_ops = { .name = "wins_ldb", .add = wins_ldb_verify, .modify = wins_ldb_verify, .init_context = wins_ldb_init }; int ldb_wins_ldb_module_init(const char *version) { LDB_MODULE_CHECK_VERSION(version); return ldb_register_module(&ldb_wins_ldb_module_ops); }