/* 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, 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; }