diff options
Diffstat (limited to 'source4/dsdb/samdb/ldb_modules/new_partition.c')
| -rw-r--r-- | source4/dsdb/samdb/ldb_modules/new_partition.c | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/new_partition.c b/source4/dsdb/samdb/ldb_modules/new_partition.c new file mode 100644 index 0000000..eaf7d43 --- /dev/null +++ b/source4/dsdb/samdb/ldb_modules/new_partition.c @@ -0,0 +1,213 @@ +/* + ldb database library + + Copyright (C) Simo Sorce 2004-2008 + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005 + Copyright (C) Andrew Tridgell 2005 + Copyright (C) Stefan Metzmacher <metze@samba.org> 2007 + + 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 <http://www.gnu.org/licenses/>. +*/ + +/* + * Name: ldb + * + * Component: ldb new partition module + * + * Description: Handle the add of new partitions + * + * Author: Andrew Bartlett + */ + +#include "includes.h" +#include "ldb.h" +#include "ldb_module.h" +#include "librpc/gen_ndr/ndr_misc.h" +#include "dsdb/samdb/samdb.h" +#include "../libds/common/flags.h" +#include "dsdb/common/util.h" + +struct np_context { + struct ldb_module *module; + struct ldb_request *req; + struct ldb_request *search_req; + struct ldb_request *part_add; +}; + +static int np_part_mod_callback(struct ldb_request *req, struct ldb_reply *ares) +{ + struct ldb_context *ldb; + struct np_context *ac; + + ac = talloc_get_type(req->context, struct np_context); + ldb = ldb_module_get_ctx(ac->module); + + if (!ares) { + return ldb_module_done(ac->req, NULL, NULL, + LDB_ERR_OPERATIONS_ERROR); + } + + /* We just want to update the @PARTITIONS record if the value does not exist */ + if (ares->error != LDB_SUCCESS && ares->error != LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS) { + return ldb_module_done(ac->req, ares->controls, + ares->response, ares->error); + } + + if (ares->type != LDB_REPLY_DONE) { + ldb_asprintf_errstring(ldb, "Invalid LDB reply type %d", ares->type); + return ldb_module_done(ac->req, NULL, NULL, + LDB_ERR_OPERATIONS_ERROR); + } + + ldb_reset_err_string(ldb); + + /* Do the original add */ + return ldb_next_request(ac->module, ac->req); +} + +static int np_part_search_callback(struct ldb_request *req, struct ldb_reply *ares) +{ + struct ldb_context *ldb; + struct np_context *ac; + struct dsdb_create_partition_exop *ex_op; + int ret; + + ac = talloc_get_type(req->context, struct np_context); + ldb = ldb_module_get_ctx(ac->module); + + if (!ares) { + return ldb_module_done(ac->req, NULL, NULL, + LDB_ERR_OPERATIONS_ERROR); + } + + /* If this already exists, we really don't want to create a + * partition - it would allow a duplicate entry to be + * created */ + if (ares->error != LDB_ERR_NO_SUCH_OBJECT) { + if (ares->error == LDB_SUCCESS) { + return ldb_module_done(ac->req, ares->controls, + ares->response, LDB_ERR_ENTRY_ALREADY_EXISTS); + } else { + return ldb_module_done(ac->req, ares->controls, + ares->response, ares->error); + } + } + + if (ares->type != LDB_REPLY_DONE) { + ldb_set_errstring(ldb, "Invalid reply type - we must not get a result here!"); + return ldb_module_done(ac->req, NULL, NULL, + LDB_ERR_OPERATIONS_ERROR); + } + + ldb_reset_err_string(ldb); + + /* Now that we know it does not exist, we can try and create the partition */ + ex_op = talloc(ac, struct dsdb_create_partition_exop); + if (ex_op == NULL) { + return ldb_oom(ldb); + } + + ex_op->new_dn = ac->req->op.add.message->dn; + + ret = ldb_build_extended_req(&ac->part_add, + ldb, ac, DSDB_EXTENDED_CREATE_PARTITION_OID, ex_op, + NULL, ac, np_part_mod_callback, req); + + /* if the parent was asking for a partial replica, then we + * need the extended operation to also ask for a partial + * replica */ + if (ldb_request_get_control(req, DSDB_CONTROL_PARTIAL_REPLICA)) { + ret = dsdb_request_add_controls(ac->part_add, DSDB_MODIFY_PARTIAL_REPLICA); + if (ret != LDB_SUCCESS) { + return ret; + } + } + + + LDB_REQ_SET_LOCATION(ac->part_add); + if (ret != LDB_SUCCESS) { + return ret; + } + + return ldb_next_request(ac->module, ac->part_add); +} + +/* add_record: add instancetype attribute */ +static int new_partition_add(struct ldb_module *module, struct ldb_request *req) +{ + struct ldb_context *ldb; + struct np_context *ac; + int ret; + + ldb = ldb_module_get_ctx(module); + + ldb_debug(ldb, LDB_DEBUG_TRACE, "new_partition_add\n"); + + /* do not manipulate our control entries */ + if (ldb_dn_is_special(req->op.add.message->dn)) { + return ldb_next_request(module, req); + } + + if (ldb_msg_find_element(req->op.add.message, "instanceType")) { + /* This needs to be 'static' to ensure it does not move, and is not on the stack */ + static const char *no_attrs[] = { NULL }; + uint32_t instanceType = ldb_msg_find_attr_as_uint(req->op.add.message, "instanceType", 0); + + if (!(instanceType & INSTANCE_TYPE_IS_NC_HEAD)) { + return ldb_next_request(module, req); + } + + if (ldb_msg_find_attr_as_bool(req->op.add.message, "isDeleted", false)) { + DEBUG(0,(__location__ ": Skipping deleted partition %s\n", + ldb_dn_get_linearized(req->op.add.message->dn))); + return ldb_next_request(module, req); + } + + /* Create an @PARTITIONS record for this partition - + * by asking the partitions module to do so via an + * extended operation, after first checking if the + * record already exists */ + ac = talloc(req, struct np_context); + if (ac == NULL) { + return ldb_oom(ldb); + } + ac->module = module; + ac->req = req; + + ret = ldb_build_search_req(&ac->search_req, ldb, ac, req->op.add.message->dn, + LDB_SCOPE_BASE, NULL, no_attrs, req->controls, ac, + np_part_search_callback, + req); + LDB_REQ_SET_LOCATION(ac->search_req); + if (ret != LDB_SUCCESS) { + return ret; + } + + return ldb_next_request(module, ac->search_req); + } + + /* go on with the call chain */ + return ldb_next_request(module, req); +} + +static const struct ldb_module_ops ldb_new_partition_module_ops = { + .name = "new_partition", + .add = new_partition_add, +}; + +int ldb_new_partition_module_init(const char *version) +{ + LDB_MODULE_CHECK_VERSION(version); + return ldb_register_module(&ldb_new_partition_module_ops); +} |