-/*
+/*
SAM ldb module
- Copyright (C) Simo Sorce 2004
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Simo Sorce 2004-2008
* NOTICE: this module is NOT released under the GNU LGPL license as
- * other ldb code. This module is release under the GNU GPL v2 or
+ * other ldb code. This module is release under the GNU GPL v3 or
* later license.
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
+ 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, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
*/
#include "includes.h"
-#include "libcli/ldap/ldap.h"
+#include "libcli/ldap/ldap_ndr.h"
#include "lib/ldb/include/ldb_errors.h"
+#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_private.h"
+#include "lib/events/events.h"
#include "dsdb/samdb/samdb.h"
#include "libcli/security/security.h"
#include "librpc/gen_ndr/ndr_security.h"
-#include "db_wrap.h"
+#include "../lib/util/util_ldb.h"
+#include "ldb_wrap.h"
+
+struct samldb_ctx;
+
+typedef int (*samldb_step_fn_t)(struct samldb_ctx *);
+
+struct samldb_step {
+ struct samldb_step *next;
+ samldb_step_fn_t fn;
+};
+
+struct samldb_ctx {
+ struct ldb_module *module;
+ struct ldb_request *req;
-int samldb_notice_sid(struct ldb_module *module,
- TALLOC_CTX *mem_ctx, const struct dom_sid *sid);
+ /* the resulting message */
+ struct ldb_message *msg;
-static BOOL samldb_msg_add_sid(struct ldb_module *module, struct ldb_message *msg, const char *name, const struct dom_sid *sid)
+ /* used to apply templates */
+ const char *type;
+
+ /* used to find parent domain */
+ struct ldb_dn *check_dn;
+ struct ldb_dn *domain_dn;
+ struct dom_sid *domain_sid;
+ uint32_t next_rid;
+
+ /* generic storage, remember to zero it before use */
+ struct ldb_reply *ares;
+
+ /* holds the entry SID */
+ struct dom_sid *sid;
+
+ /* all the async steps necessary to complete the operation */
+ struct samldb_step *steps;
+ struct samldb_step *curstep;
+};
+
+static struct samldb_ctx *samldb_ctx_init(struct ldb_module *module,
+ struct ldb_request *req)
{
- struct ldb_val v;
- NTSTATUS status;
- status = ndr_push_struct_blob(&v, msg, sid,
- (ndr_push_flags_fn_t)ndr_push_dom_sid);
- if (!NT_STATUS_IS_OK(status)) {
- return -1;
+ struct samldb_ctx *ac;
+
+ ac = talloc_zero(req, struct samldb_ctx);
+ if (ac == NULL) {
+ ldb_oom(module->ldb);
+ return NULL;
}
- return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
+
+ ac->module = module;
+ ac->req = req;
+
+ return ac;
}
-/*
- allocate a new id, attempting to do it atomically
- return 0 on failure, the id on success
-*/
-static int samldb_set_next_rid(struct ldb_context *ldb, TALLOC_CTX *mem_ctx,
- struct ldb_dn *dn, uint32_t old_id, uint32_t new_id)
+static int samldb_add_step(struct samldb_ctx *ac, samldb_step_fn_t fn)
{
- struct ldb_message msg;
- int ret;
- struct ldb_val vals[2];
- struct ldb_message_element els[2];
+ struct samldb_step *step;
- if (new_id == 0) {
- /* out of IDs ! */
- ldb_debug(ldb, LDB_DEBUG_FATAL, "Are we out of valid IDs ?\n");
+ step = talloc_zero(ac, struct samldb_step);
+ if (step == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- /* we do a delete and add as a single operation. That prevents
- a race, in case we are not actually on a transaction db */
- ZERO_STRUCT(msg);
- msg.dn = ldb_dn_copy(mem_ctx, dn);
- if (!msg.dn) {
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ac->steps == NULL) {
+ ac->steps = step;
+ ac->curstep = step;
+ } else {
+ ac->curstep->next = step;
+ ac->curstep = step;
}
- msg.num_elements = 2;
- msg.elements = els;
- els[0].num_values = 1;
- els[0].values = &vals[0];
- els[0].flags = LDB_FLAG_MOD_DELETE;
- els[0].name = talloc_strdup(mem_ctx, "nextRid");
- if (!els[0].name) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
+ step->fn = fn;
- els[1].num_values = 1;
- els[1].values = &vals[1];
- els[1].flags = LDB_FLAG_MOD_ADD;
- els[1].name = els[0].name;
+ return LDB_SUCCESS;
+}
- vals[0].data = (uint8_t *)talloc_asprintf(mem_ctx, "%u", old_id);
- if (!vals[0].data) {
+static int samldb_first_step(struct samldb_ctx *ac)
+{
+ if (ac->steps == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- vals[0].length = strlen((char *)vals[0].data);
- vals[1].data = (uint8_t *)talloc_asprintf(mem_ctx, "%u", new_id);
- if (!vals[1].data) {
- return LDB_ERR_OPERATIONS_ERROR;
+ ac->curstep = ac->steps;
+ return ac->curstep->fn(ac);
+}
+
+static int samldb_next_step(struct samldb_ctx *ac)
+{
+ if (ac->curstep->next) {
+ ac->curstep = ac->curstep->next;
+ return ac->curstep->fn(ac);
}
- vals[1].length = strlen((char *)vals[1].data);
- ret = ldb_modify(ldb, &msg);
- return ret;
+ /* it is an error if the last step does not properly
+ * return to the upper module by itself */
+ return LDB_ERR_OPERATIONS_ERROR;
}
-/*
- allocate a new id, attempting to do it atomically
- return 0 on failure, the id on success
-*/
-static int samldb_find_next_rid(struct ldb_module *module, TALLOC_CTX *mem_ctx,
- struct ldb_dn *dn, uint32_t *old_rid)
+static int samldb_search_template_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
{
- const char * const attrs[2] = { "nextRid", NULL };
- struct ldb_result *res = NULL;
+ struct samldb_ctx *ac;
int ret;
- const char *str;
- ret = ldb_search(module->ldb, dn, LDB_SCOPE_BASE, "nextRid=*", attrs, &res);
- if (ret != LDB_SUCCESS) {
- return ret;
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
}
- if (res->count != 1) {
- talloc_free(res);
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
}
- str = ldb_msg_find_attr_as_string(res->msgs[0], "nextRid", NULL);
- if (str == NULL) {
- ldb_asprintf_errstring(module->ldb,
- "attribute nextRid not found in %s\n",
- ldb_dn_get_linearized(dn));
- talloc_free(res);
- return LDB_ERR_OPERATIONS_ERROR;
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+ /* save entry */
+ if (ac->ares != NULL) {
+ /* one too many! */
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid number of results while searching "
+ "for template objects");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ac->ares = talloc_steal(ac, ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_DONE:
+
+ talloc_free(ares);
+ ret = samldb_next_step(ac);
+ break;
+ }
+
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
- *old_rid = strtol(str, NULL, 0);
- talloc_free(res);
return LDB_SUCCESS;
}
-static int samldb_allocate_next_rid(struct ldb_module *module, TALLOC_CTX *mem_ctx,
- struct ldb_dn *dn, const struct dom_sid *dom_sid,
- struct dom_sid **new_sid)
+static int samldb_search_template(struct samldb_ctx *ac)
{
- struct dom_sid *obj_sid;
- uint32_t old_rid;
+ struct event_context *ev;
+ struct loadparm_context *lparm_ctx;
+ struct ldb_context *templates_ldb;
+ char *templates_ldb_path;
+ struct ldb_request *req;
+ struct ldb_dn *basedn;
+ void *opaque;
int ret;
-
- ret = samldb_find_next_rid(module, mem_ctx, dn, &old_rid);
- if (ret) {
- return ret;
+
+ opaque = ldb_get_opaque(ac->module->ldb, "loadparm");
+ lparm_ctx = talloc_get_type(opaque, struct loadparm_context);
+ if (lparm_ctx == NULL) {
+ ldb_set_errstring(ac->module->ldb,
+ "Unable to find loadparm context\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ opaque = ldb_get_opaque(ac->module->ldb, "templates_ldb");
+ templates_ldb = talloc_get_type(opaque, struct ldb_context);
+
+ /* make sure we have the templates ldb */
+ if (!templates_ldb) {
+ templates_ldb_path = samdb_relative_path(ac->module->ldb, ac,
+ "templates.ldb");
+ if (!templates_ldb_path) {
+ ldb_set_errstring(ac->module->ldb,
+ "samldb_init_template: ERROR: Failed "
+ "to contruct path for template db");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ev = ldb_get_event_context(ac->module->ldb);
+
+ templates_ldb = ldb_wrap_connect(ac->module->ldb, ev,
+ lparm_ctx, templates_ldb_path,
+ NULL, NULL, 0, NULL);
+ talloc_free(templates_ldb_path);
+
+ if (!templates_ldb) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (!talloc_reference(templates_ldb, ev)) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ ret = ldb_set_opaque(ac->module->ldb,
+ "templates_ldb", templates_ldb);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
}
-
- /* return the new object sid */
- obj_sid = dom_sid_add_rid(mem_ctx, dom_sid, old_rid);
-
- *new_sid = dom_sid_add_rid(mem_ctx, dom_sid, old_rid + 1);
- if (!*new_sid) {
+
+ /* search template */
+ basedn = ldb_dn_new_fmt(ac, templates_ldb,
+ "cn=Template%s,cn=Templates", ac->type);
+ if (basedn == NULL) {
+ ldb_set_errstring(ac->module->ldb,
+ "samldb_init_template: ERROR: Failed "
+ "to contruct DN for template");
return LDB_ERR_OPERATIONS_ERROR;
}
- ret = samldb_notice_sid(module, mem_ctx, *new_sid);
- if (ret != 0) {
- /* gah, there are conflicting sids.
- * This is a critical situation it means that someone messed up with
- * the DB and nextRid is not returning free RIDs, report an error
- * and refuse to create any user until the problem is fixed */
- ldb_asprintf_errstring(module->ldb,
- "Critical Error: unconsistent DB, unable to retireve an unique RID to generate a new SID: %s",
- ldb_errstring(module->ldb));
+ /* pull the template record */
+ ret = ldb_build_search_req(&req, templates_ldb, ac,
+ basedn, LDB_SCOPE_BASE,
+ "(distinguishedName=*)", NULL,
+ NULL,
+ ac, samldb_search_template_callback,
+ ac->req);
+ if (ret != LDB_SUCCESS) {
return ret;
}
- return ret;
+
+ talloc_steal(req, basedn);
+ ac->ares = NULL;
+
+ return ldb_request(templates_ldb, req);
}
-/* Find a domain object in the parents of a particular DN. */
-static struct ldb_dn *samldb_search_domain(struct ldb_module *module, TALLOC_CTX *mem_ctx, struct ldb_dn *dn)
+static int samldb_apply_template(struct samldb_ctx *ac)
{
- TALLOC_CTX *local_ctx;
- struct ldb_dn *sdn;
- struct ldb_result *res = NULL;
- int ret = 0;
- const char *attrs[] = { NULL };
-
- local_ctx = talloc_new(mem_ctx);
- if (local_ctx == NULL) return NULL;
-
- sdn = ldb_dn_copy(local_ctx, dn);
- do {
- ret = ldb_search(module->ldb, sdn, LDB_SCOPE_BASE,
- "(|(objectClass=domain)(objectClass=builtinDomain))", attrs, &res);
- if (ret == LDB_SUCCESS) {
- talloc_steal(local_ctx, res);
- if (res->count == 1) {
- break;
+ struct ldb_message_element *el;
+ struct ldb_message *msg;
+ int i, j;
+ int ret;
+
+ msg = ac->ares->message;
+
+ for (i = 0; i < msg->num_elements; i++) {
+ el = &msg->elements[i];
+ /* some elements should not be copied */
+ if (ldb_attr_cmp(el->name, "cn") == 0 ||
+ ldb_attr_cmp(el->name, "name") == 0 ||
+ ldb_attr_cmp(el->name, "objectClass") == 0 ||
+ ldb_attr_cmp(el->name, "sAMAccountName") == 0 ||
+ ldb_attr_cmp(el->name, "sAMAccountName") == 0 ||
+ ldb_attr_cmp(el->name, "distinguishedName") == 0 ||
+ ldb_attr_cmp(el->name, "objectGUID") == 0) {
+ continue;
+ }
+ for (j = 0; j < el->num_values; j++) {
+ ret = samdb_find_or_add_attribute(
+ ac->module->ldb, ac->msg, el->name,
+ (char *)el->values[j].data);
+ if (ret != LDB_SUCCESS) {
+ ldb_set_errstring(ac->module->ldb,
+ "Failed adding template attribute\n");
+ return LDB_ERR_OPERATIONS_ERROR;
}
}
- } while ((sdn = ldb_dn_get_parent(local_ctx, sdn)));
-
- if (ret != LDB_SUCCESS || res->count != 1) {
- talloc_free(local_ctx);
- return NULL;
}
- talloc_steal(mem_ctx, sdn);
- talloc_free(local_ctx);
-
- return sdn;
+ return samldb_next_step(ac);
}
-/* search the domain related to the provided dn
- allocate a new RID for the domain
- return the new sid string
-*/
-static int samldb_get_new_sid(struct ldb_module *module,
- TALLOC_CTX *mem_ctx, struct ldb_dn *obj_dn,
- struct dom_sid **sid)
+static int samldb_get_parent_domain(struct samldb_ctx *ac);
+
+static int samldb_get_parent_domain_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
{
- const char * const attrs[2] = { "objectSid", NULL };
- struct ldb_result *res = NULL;
- struct ldb_dn *dom_dn;
+ struct samldb_ctx *ac;
+ const char *nextRid;
int ret;
- struct dom_sid *dom_sid;
- /* get the domain component part of the provided dn */
+ ac = talloc_get_type(req->context, struct samldb_ctx);
- dom_dn = samldb_search_domain(module, mem_ctx, obj_dn);
- if (dom_dn == NULL) {
- ldb_asprintf_errstring(module->ldb,
- "Invalid dn (%s) not child of a domain object!\n",
- ldb_dn_get_linearized(obj_dn));
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
}
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+ /* save entry */
+ if (ac->domain_dn != NULL) {
+ /* one too many! */
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid number of results while searching "
+ "for domain object");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
- /* find the domain sid */
+ nextRid = ldb_msg_find_attr_as_string(ares->message,
+ "nextRid", NULL);
+ if (nextRid == NULL) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "while looking for domain above %s attribute nextRid not found in %s\n",
+ ldb_dn_get_linearized(ac->req->op.add.message->dn),
+ ldb_dn_get_linearized(ares->message->dn));
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
+
+ ac->next_rid = strtol(nextRid, NULL, 0);
+
+ ac->domain_sid = samdb_result_dom_sid(ac, ares->message,
+ "objectSid");
+ if (ac->domain_sid == NULL) {
+ ldb_set_errstring(ac->module->ldb,
+ "error retrieving parent domain domain sid!\n");
+ ret = LDB_ERR_CONSTRAINT_VIOLATION;
+ break;
+ }
+ ac->domain_dn = talloc_steal(ac, ares->message->dn);
+
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ ldb_reset_err_string(ac->module->ldb);
+ break;
+
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ break;
- ret = ldb_search(module->ldb, dom_dn, LDB_SCOPE_BASE, "objectSid=*", attrs, &res);
+ case LDB_REPLY_DONE:
+
+ talloc_free(ares);
+ if (ac->domain_dn == NULL) {
+ /* search again */
+ ret = samldb_get_parent_domain(ac);
+ } else {
+ /* found, go on */
+ ret = samldb_next_step(ac);
+ }
+ break;
+ }
+
+done:
if (ret != LDB_SUCCESS) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_get_new_sid: error retrieving domain sid from %s: %s!\n",
- ldb_dn_get_linearized(dom_dn),
- ldb_errstring(module->ldb));
- talloc_free(res);
- return ret;
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
- if (res->count != 1) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_get_new_sid: error retrieving domain sid from %s: not found!\n",
- ldb_dn_get_linearized(dom_dn));
- talloc_free(res);
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return LDB_SUCCESS;
+}
+
+/* Find a domain object in the parents of a particular DN. */
+static int samldb_get_parent_domain(struct samldb_ctx *ac)
+{
+ static const char * const attrs[3] = { "objectSid", "nextRid", NULL };
+ struct ldb_request *req;
+ struct ldb_dn *dn;
+ int ret;
+
+ if (ac->check_dn == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- dom_sid = samdb_result_dom_sid(res, res->msgs[0], "objectSid");
- if (dom_sid == NULL) {
- ldb_set_errstring(module->ldb, "samldb_get_new_sid: error parsing domain sid!\n");
- talloc_free(res);
+ dn = ldb_dn_get_parent(ac, ac->check_dn);
+ if (dn == NULL) {
+ ldb_set_errstring(ac->module->ldb,
+ "Unable to find parent domain object");
return LDB_ERR_CONSTRAINT_VIOLATION;
}
- /* allocate a new Rid for the domain */
- ret = samldb_allocate_next_rid(module, mem_ctx, dom_dn, dom_sid, sid);
- if (ret != 0) {
- ldb_debug(module->ldb, LDB_DEBUG_FATAL, "Failed to increment nextRid of %s: %s\n", ldb_dn_get_linearized(dom_dn), ldb_errstring(module->ldb));
- talloc_free(res);
+ ac->check_dn = dn;
+
+ ret = ldb_build_search_req(&req, ac->module->ldb, ac,
+ dn, LDB_SCOPE_BASE,
+ "(|(objectClass=domain)"
+ "(objectClass=builtinDomain)"
+ "(objectClass=samba4LocalDomain))",
+ attrs,
+ NULL,
+ ac, samldb_get_parent_domain_callback,
+ ac->req);
+
+ if (ret != LDB_SUCCESS) {
return ret;
}
- talloc_free(res);
-
- return ret;
+ return ldb_next_request(ac->module, req);
}
-/* If we are adding new users/groups, we need to update the nextRid
- * attribute to be 'above' all incoming users RIDs. This tries to
- * avoid clashes in future */
+static int samldb_generate_samAccountName(struct ldb_message *msg)
+{
+ char *name;
+
+ /* Format: $000000-000000000000 */
+
+ name = talloc_asprintf(msg, "$%.6X-%.6X%.6X",
+ (unsigned int)generate_random(),
+ (unsigned int)generate_random(),
+ (unsigned int)generate_random());
+ if (name == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ return ldb_msg_add_steal_string(msg, "samAccountName", name);
+}
-int samldb_notice_sid(struct ldb_module *module,
- TALLOC_CTX *mem_ctx, const struct dom_sid *sid)
+static int samldb_check_samAccountName_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
{
+ struct samldb_ctx *ac;
int ret;
- struct ldb_dn *dom_dn;
- struct dom_sid *dom_sid;
- const char *attrs[] = { NULL };
- struct ldb_result *dom_res;
- struct ldb_result *res;
- uint32_t old_rid;
- char *filter;
- /* find if this SID already exists */
+ ac = talloc_get_type(req->context, struct samldb_ctx);
- filter = talloc_asprintf(mem_ctx, "(objectSid=%s)",
- ldap_encode_ndr_dom_sid(mem_ctx, sid));
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
- ret = ldb_search(module->ldb, NULL, LDB_SCOPE_SUBTREE, filter, attrs, &res);
- if (ret == LDB_SUCCESS) {
- if (res->count > 0) {
- talloc_free(res);
- ldb_asprintf_errstring(module->ldb,
- "Attempt to add record with SID %s rejected,"
- " because this SID is already in the database",
- dom_sid_string(mem_ctx, sid));
- /* We have a duplicate SID, we must reject the add */
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+
+ /* if we get an entry it means this samAccountName
+ * already exists */
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_ENTRY_ALREADY_EXISTS);
+
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_DONE:
+
+ /* not found, go on */
+ talloc_free(ares);
+ ret = samldb_next_step(ac);
+ break;
+ }
+
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
+
+ return LDB_SUCCESS;
+}
+
+static int samldb_check_samAccountName(struct samldb_ctx *ac)
+{
+ struct ldb_request *req;
+ const char *name;
+ char *filter;
+ int ret;
+
+ if (ldb_msg_find_element(ac->msg, "samAccountName") == NULL) {
+ ret = samldb_generate_samAccountName(ac->msg);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- talloc_free(res);
- } else {
- ldb_asprintf_errstring(module->ldb,
- "samldb_notice_sid: error searching to see if sid %s is in use: %s\n",
- dom_sid_string(mem_ctx, sid),
- ldb_errstring(module->ldb));
- return ret;
}
- dom_sid = dom_sid_dup(mem_ctx, sid);
- if (!dom_sid) {
+ name = ldb_msg_find_attr_as_string(ac->msg, "samAccountName", NULL);
+ if (name == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ filter = talloc_asprintf(ac, "samAccountName=%s", name);
+ if (filter == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- /* get the domain component part of the provided SID */
- dom_sid->num_auths--;
-
- /* find the domain DN */
-
- filter = talloc_asprintf(mem_ctx, "(&(objectSid=%s)(objectclass=domain))",
- ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
-
- ret = ldb_search(module->ldb, NULL, LDB_SCOPE_SUBTREE, filter, attrs, &dom_res);
- if (ret == LDB_SUCCESS) {
- talloc_steal(mem_ctx, dom_res);
- if (dom_res->count == 0) {
- talloc_free(dom_res);
- /* This isn't an operation on a domain we know about, so nothing to update */
- return LDB_SUCCESS;
- }
- if (dom_res->count > 1) {
- talloc_free(dom_res);
- ldb_asprintf_errstring(module->ldb,
- "samldb_notice_sid: error retrieving domain from sid: duplicate (found %d) domain: %s!\n",
- dom_res->count, dom_sid_string(dom_res, dom_sid));
- return LDB_ERR_OPERATIONS_ERROR;
- }
- } else {
- ldb_asprintf_errstring(module->ldb,
- "samldb_notice_sid: error retrieving domain from sid: %s: %s\n",
- dom_sid_string(dom_res, dom_sid),
- ldb_errstring(module->ldb));
+ ret = ldb_build_search_req(&req, ac->module->ldb, ac,
+ ac->domain_dn, LDB_SCOPE_SUBTREE,
+ filter, NULL,
+ NULL,
+ ac, samldb_check_samAccountName_callback,
+ ac->req);
+ talloc_free(filter);
+ if (ret != LDB_SUCCESS) {
return ret;
}
+ ac->ares = NULL;
+ return ldb_next_request(ac->module, req);
+}
- dom_dn = dom_res->msgs[0]->dn;
+static int samldb_check_samAccountType(struct samldb_ctx *ac)
+{
+ unsigned int account_type;
+ unsigned int group_type;
+ unsigned int uac;
+ int ret;
- ret = samldb_find_next_rid(module, mem_ctx,
- dom_dn, &old_rid);
- if (ret) {
- talloc_free(dom_res);
- return ret;
+ /* make sure sAMAccountType is not specified */
+ if (ldb_msg_find_element(ac->msg, "sAMAccountType") != NULL) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "sAMAccountType must not be specified");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
}
- if (old_rid <= sid->sub_auths[sid->num_auths - 1]) {
- ret = samldb_set_next_rid(module->ldb, mem_ctx, dom_dn, old_rid,
- sid->sub_auths[sid->num_auths - 1] + 1);
+ if (strcmp("user", ac->type) == 0) {
+ uac = samdb_result_uint(ac->msg, "userAccountControl", 0);
+ if (uac == 0) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "userAccountControl invalid");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ } else {
+ account_type = samdb_uf2atype(uac);
+ ret = samdb_msg_add_uint(ac->module->ldb,
+ ac->msg, ac->msg,
+ "sAMAccountType",
+ account_type);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
+ } else
+ if (strcmp("group", ac->type) == 0) {
+
+ group_type = samdb_result_uint(ac->msg, "groupType", 0);
+ if (group_type == 0) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "groupType invalid");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
+ } else {
+ account_type = samdb_gtype2atype(group_type);
+ ret = samdb_msg_add_uint(ac->module->ldb,
+ ac->msg, ac->msg,
+ "sAMAccountType",
+ account_type);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ }
}
- talloc_free(dom_res);
- return ret;
+
+ return samldb_next_step(ac);
}
-static int samldb_handle_sid(struct ldb_module *module,
- TALLOC_CTX *mem_ctx, struct ldb_message *msg2)
+static int samldb_get_sid_domain_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
{
+ struct samldb_ctx *ac;
+ const char *nextRid;
int ret;
-
- struct dom_sid *sid = samdb_result_dom_sid(mem_ctx, msg2, "objectSid");
- if (sid == NULL) {
- ret = samldb_get_new_sid(module, msg2, msg2->dn, &sid);
- if (ret != 0) {
- return ret;
+
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+ /* save entry */
+ if (ac->next_rid != 0) {
+ /* one too many! */
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid number of results while searching "
+ "for domain object");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
}
- if ( ! samldb_msg_add_sid(module, msg2, "objectSid", sid)) {
- talloc_free(sid);
- return LDB_ERR_OPERATIONS_ERROR;
+ nextRid = ldb_msg_find_attr_as_string(ares->message,
+ "nextRid", NULL);
+ if (nextRid == NULL) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "attribute nextRid not found in %s\n",
+ ldb_dn_get_linearized(ares->message->dn));
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
}
- talloc_free(sid);
+
+ ac->next_rid = strtol(nextRid, NULL, 0);
+
+ ac->domain_dn = talloc_steal(ac, ares->message->dn);
+
+ talloc_free(ares);
ret = LDB_SUCCESS;
- } else {
- ret = samldb_notice_sid(module, msg2, sid);
- }
- return ret;
-}
+ break;
-static char *samldb_generate_samAccountName(struct ldb_module *module, TALLOC_CTX *mem_ctx)
-{
- char *name;
- const char *attrs[] = { NULL };
- struct ldb_message **msgs;
- int ret;
-
- /* Format: $000000-000000000000 */
-
- do {
- name = talloc_asprintf(mem_ctx, "$%.6X-%.6X%.6X", (unsigned int)random(), (unsigned int)random(), (unsigned int)random());
- /* TODO: Figure out exactly what this is meant to conflict with */
- ret = gendb_search(module->ldb,
- mem_ctx, NULL, &msgs, attrs,
- "samAccountName=%s",
- ldb_binary_encode_string(mem_ctx, name));
- if (ret == 0) {
- /* Great. There are no conflicting users/groups/etc */
- return name;
- } else if (ret == -1) {
- /* Bugger, there is a problem, and we don't know what it is until gendb_search improves */
- return NULL;
- } else {
- talloc_free(name);
- /* gah, there are conflicting sids, lets move around the loop again... */
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ ret = LDB_SUCCESS;
+ break;
+
+ case LDB_REPLY_DONE:
+
+ if (ac->next_rid == 0) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "Unable to get nextRid from domain entry\n");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
}
- } while (1);
+
+ /* found, go on */
+ ret = samldb_next_step(ac);
+ break;
+ }
+
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
+
+ return LDB_SUCCESS;
}
-static int samldb_fill_group_object(struct ldb_module *module, const struct ldb_message *msg,
- struct ldb_message **ret_msg)
+/* Find a domain object in the parents of a particular DN. */
+static int samldb_get_sid_domain(struct samldb_ctx *ac)
{
+ static const char * const attrs[2] = { "nextRid", NULL };
+ struct ldb_request *req;
+ char *filter;
int ret;
- const char *name;
- struct ldb_message *msg2;
- const char *rdn_name;
- TALLOC_CTX *mem_ctx = talloc_new(msg);
- const char *errstr;
- if (!mem_ctx) {
+
+ if (ac->sid == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- /* build the new msg */
- msg2 = ldb_msg_copy(mem_ctx, msg);
- if (!msg2) {
- ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_fill_group_object: ldb_msg_copy failed!\n");
- talloc_free(mem_ctx);
+ ac->domain_sid = dom_sid_dup(ac, ac->sid);
+ if (!ac->domain_sid) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ /* get the domain component part of the provided SID */
+ ac->domain_sid->num_auths--;
+
+ filter = talloc_asprintf(ac, "(&(objectSid=%s)"
+ "(|(objectClass=domain)"
+ "(objectClass=builtinDomain)"
+ "(objectClass=samba4LocalDomain)))",
+ ldap_encode_ndr_dom_sid(ac, ac->domain_sid));
+ if (filter == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- ret = samdb_copy_template(module->ldb, msg2,
- "(&(CN=TemplateGroup)(objectclass=groupTemplate))",
- &errstr);
- if (ret != 0) {
-
- talloc_free(mem_ctx);
+ ret = ldb_build_search_req(&req, ac->module->ldb, ac,
+ ldb_get_default_basedn(ac->module->ldb),
+ LDB_SCOPE_SUBTREE,
+ filter, attrs,
+ NULL,
+ ac, samldb_get_sid_domain_callback,
+ ac->req);
+
+ if (ret != LDB_SUCCESS) {
return ret;
}
- rdn_name = ldb_dn_get_rdn_name(msg2->dn);
+ ac->next_rid = 0;
+ return ldb_next_request(ac->module, req);
+}
- if (strcasecmp(rdn_name, "cn") != 0) {
- ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_fill_group_object: Bad RDN (%s) for group!\n", rdn_name);
- talloc_free(mem_ctx);
- return LDB_ERR_CONSTRAINT_VIOLATION;
+static bool samldb_msg_add_sid(struct ldb_message *msg,
+ const char *name,
+ const struct dom_sid *sid)
+{
+ struct ldb_val v;
+ enum ndr_err_code ndr_err;
+
+ ndr_err = ndr_push_struct_blob(&v, msg, NULL, sid,
+ (ndr_push_flags_fn_t)ndr_push_dom_sid);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return false;
}
+ return (ldb_msg_add_value(msg, name, &v, NULL) == 0);
+}
- /* Generate a random name, if no samAccountName was supplied */
- if (ldb_msg_find_element(msg2, "samAccountName") == NULL) {
- name = samldb_generate_samAccountName(module, mem_ctx);
- if (!name) {
- talloc_free(mem_ctx);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ret = samdb_find_or_add_attribute(module->ldb, msg2, "sAMAccountName", name);
- if (ret) {
- talloc_free(mem_ctx);
- return ret;
- }
+static int samldb_new_sid(struct samldb_ctx *ac)
+{
+
+ if (ac->domain_sid == NULL || ac->next_rid == 0) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
-
- /* Manage SID allocation, conflicts etc */
- ret = samldb_handle_sid(module, mem_ctx, msg2);
- if (ret == LDB_SUCCESS) {
- talloc_steal(msg, msg2);
- *ret_msg = msg2;
+ ac->sid = dom_sid_add_rid(ac, ac->domain_sid, ac->next_rid + 1);
+ if (ac->sid == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- talloc_free(mem_ctx);
- return ret;
+
+ return samldb_next_step(ac);
}
-static int samldb_fill_user_or_computer_object(struct ldb_module *module, const struct ldb_message *msg,
- struct ldb_message **ret_msg)
+static int samldb_check_sid_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
{
+ struct samldb_ctx *ac;
int ret;
- char *name;
- struct ldb_message *msg2;
- const char *rdn_name;
- TALLOC_CTX *mem_ctx = talloc_new(msg);
- const char *errstr;
- if (!mem_ctx) {
- return LDB_ERR_OPERATIONS_ERROR;
- }
- /* build the new msg */
- msg2 = ldb_msg_copy(mem_ctx, msg);
- if (!msg2) {
- ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_fill_group_object: ldb_msg_copy failed!\n");
- talloc_free(mem_ctx);
- return LDB_ERR_OPERATIONS_ERROR;
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
}
- if (samdb_find_attribute(module->ldb, msg, "objectclass", "computer") != NULL) {
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
- ret = samdb_copy_template(module->ldb, msg2,
- "(&(CN=TemplateComputer)(objectclass=userTemplate))",
- &errstr);
- if (ret) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_fill_user_or_computer_object: "
- "Error copying computer template: %s",
- errstr);
- talloc_free(mem_ctx);
- return ret;
- }
+ /* if we get an entry it means an object with the
+ * requested sid exists */
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_CONSTRAINT_VIOLATION);
- /* readd user and then computer objectclasses */
- ret = samdb_find_or_add_value(module->ldb, msg2, "objectclass", "user");
- if (ret) {
- talloc_free(mem_ctx);
- return ret;
- }
- ret = samdb_find_or_add_value(module->ldb, msg2, "objectclass", "computer");
- if (ret) {
- talloc_free(mem_ctx);
- return ret;
- }
-
- } else {
- ret = samdb_copy_template(module->ldb, msg2,
- "(&(CN=TemplateUser)(objectclass=userTemplate))",
- &errstr);
- if (ret) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_fill_user_or_computer_object: Error copying user template: %s\n",
- errstr);
- talloc_free(mem_ctx);
- return ret;
- }
- /* readd user objectclass */
- ret = samdb_find_or_add_value(module->ldb, msg2, "objectclass", "user");
- if (ret) {
- talloc_free(mem_ctx);
- return ret;
- }
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ break;
+
+ case LDB_REPLY_DONE:
+
+ /* not found, go on */
+ talloc_free(ares);
+ ret = samldb_next_step(ac);
+ break;
}
- rdn_name = ldb_dn_get_rdn_name(msg2->dn);
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
- if (strcasecmp(rdn_name, "cn") != 0) {
- ldb_asprintf_errstring(module->ldb, "Bad RDN (%s=) for user/computer, should be CN=!\n", rdn_name);
- talloc_free(mem_ctx);
- return LDB_ERR_CONSTRAINT_VIOLATION;
+ return LDB_SUCCESS;
+}
+
+static int samldb_check_sid(struct samldb_ctx *ac)
+{
+ const char *const attrs[2] = { "objectSid", NULL };
+ struct ldb_request *req;
+ char *filter;
+ int ret;
+
+ if (ac->sid == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- if (ldb_msg_find_element(msg2, "samAccountName") == NULL) {
- name = samldb_generate_samAccountName(module, mem_ctx);
- if (!name) {
- talloc_free(mem_ctx);
- return LDB_ERR_OPERATIONS_ERROR;
- }
- ret = samdb_find_or_add_attribute(module->ldb, msg2, "sAMAccountName", name);
- if (ret) {
- talloc_free(mem_ctx);
- return ret;
- }
+ filter = talloc_asprintf(ac, "(objectSid=%s)",
+ ldap_encode_ndr_dom_sid(ac, ac->sid));
+ if (filter == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
}
- /*
- TODO: useraccountcontrol: setting value 0 gives 0x200 for users
- */
+ ret = ldb_build_search_req(&req, ac->module->ldb, ac,
+ ldb_get_default_basedn(ac->module->ldb),
+ LDB_SCOPE_SUBTREE,
+ filter, attrs,
+ NULL,
+ ac, samldb_check_sid_callback,
+ ac->req);
+
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
- /* Manage SID allocation, conflicts etc */
- ret = samldb_handle_sid(module, mem_ctx, msg2);
+ return ldb_next_request(ac->module, req);
+}
- /* TODO: objectCategory, userAccountControl, badPwdCount, codePage, countryCode, badPasswordTime, lastLogoff, lastLogon, pwdLastSet, primaryGroupID, accountExpires, logonCount */
+static int samldb_notice_sid_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
+{
+ struct samldb_ctx *ac;
+ int ret;
- if (ret == 0) {
- *ret_msg = msg2;
- talloc_steal(msg, msg2);
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+ if (ares->type != LDB_REPLY_DONE) {
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid reply type!\n");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+
+ ret = samldb_next_step(ac);
+
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
}
- talloc_free(mem_ctx);
- return ret;
+
+ return LDB_SUCCESS;
}
-
-static int samldb_fill_foreignSecurityPrincipal_object(struct ldb_module *module, const struct ldb_message *msg,
- struct ldb_message **ret_msg)
+
+/* If we are adding new users/groups, we need to update the nextRid
+ * attribute to be 'above' the new/incoming RID. Attempt to do it
+ *atomically. */
+static int samldb_notice_sid(struct samldb_ctx *ac)
{
- struct ldb_message *msg2;
- const char *rdn_name;
- struct dom_sid *dom_sid;
- struct dom_sid *sid;
- const char *dom_attrs[] = { "name", NULL };
- struct ldb_message **dom_msgs;
- const char *errstr;
+ uint32_t old_id, new_id;
+ struct ldb_request *req;
+ struct ldb_message *msg;
+ struct ldb_message_element *els;
+ struct ldb_val *vals;
int ret;
- TALLOC_CTX *mem_ctx = talloc_new(msg);
- if (!mem_ctx) {
+ old_id = ac->next_rid;
+ new_id = ac->sid->sub_auths[ac->sid->num_auths - 1];
+
+ if (old_id >= new_id) {
+ /* no need to update the domain nextRid attribute */
+ return samldb_next_step(ac);
+ }
+
+ /* we do a delete and add as a single operation. That prevents
+ a race, in case we are not actually on a transaction db */
+ msg = talloc_zero(ac, struct ldb_message);
+ if (msg == NULL) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ els = talloc_array(msg, struct ldb_message_element, 2);
+ if (els == NULL) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ vals = talloc_array(msg, struct ldb_val, 2);
+ if (vals == NULL) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ msg->dn = ac->domain_dn;
+ msg->num_elements = 2;
+ msg->elements = els;
+
+ els[0].num_values = 1;
+ els[0].values = &vals[0];
+ els[0].flags = LDB_FLAG_MOD_DELETE;
+ els[0].name = talloc_strdup(msg, "nextRid");
+ if (!els[0].name) {
+ ldb_oom(ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
- /* build the new msg */
- msg2 = ldb_msg_copy(mem_ctx, msg);
- if (!msg2) {
- ldb_debug(module->ldb, LDB_DEBUG_FATAL, "samldb_fill_foreignSecurityPrincpal_object: ldb_msg_copy failed!\n");
- talloc_free(mem_ctx);
+ els[1].num_values = 1;
+ els[1].values = &vals[1];
+ els[1].flags = LDB_FLAG_MOD_ADD;
+ els[1].name = els[0].name;
+
+ vals[0].data = (uint8_t *)talloc_asprintf(vals, "%u", old_id);
+ if (!vals[0].data) {
+ ldb_oom(ac->module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ vals[0].length = strlen((char *)vals[0].data);
+
+ vals[1].data = (uint8_t *)talloc_asprintf(vals, "%u", new_id);
+ if (!vals[1].data) {
+ ldb_oom(ac->module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
+ vals[1].length = strlen((char *)vals[1].data);
- ret = samdb_copy_template(module->ldb, msg2,
- "(&(CN=TemplateForeignSecurityPrincipal)(objectclass=foreignSecurityPrincipalTemplate))",
- &errstr);
- if (ret != 0) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_fill_foreignSecurityPrincipal_object: "
- "Error copying template: %s",
- errstr);
- talloc_free(mem_ctx);
+ ret = ldb_build_mod_req(&req, ac->module->ldb, ac,
+ msg, NULL,
+ ac, samldb_notice_sid_callback,
+ ac->req);
+ if (ret != LDB_SUCCESS) {
return ret;
}
- rdn_name = ldb_dn_get_rdn_name(msg2->dn);
+ return ldb_next_request(ac->module, req);
+}
- if (strcasecmp(rdn_name, "cn") != 0) {
- ldb_asprintf_errstring(module->ldb, "Bad RDN (%s=) for ForeignSecurityPrincipal, should be CN=!", rdn_name);
- talloc_free(mem_ctx);
- return LDB_ERR_CONSTRAINT_VIOLATION;
+static int samldb_add_entry_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
+{
+ struct samldb_ctx *ac;
+
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+ if (ares->type != LDB_REPLY_DONE) {
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid reply type!\n");
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ /* we exit the samldb module here */
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, LDB_SUCCESS);
+}
+
+static int samldb_add_entry(struct samldb_ctx *ac)
+{
+ struct ldb_request *req;
+ int ret;
+
+ ret = ldb_build_add_req(&req, ac->module->ldb, ac,
+ ac->msg,
+ ac->req->controls,
+ ac, samldb_add_entry_callback,
+ ac->req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
- /* Slightly different for the foreign sids. We don't want
- * domain SIDs ending up there, it would cause all sorts of
- * pain */
+ return ldb_next_request(ac->module, req);
+}
- sid = dom_sid_parse_talloc(msg2, (const char *)ldb_dn_get_rdn_val(msg2->dn)->data);
- if (!sid) {
- ldb_set_errstring(module->ldb, "No valid found SID in ForeignSecurityPrincipal CN!");
- talloc_free(mem_ctx);
- return LDB_ERR_CONSTRAINT_VIOLATION;
+static int samldb_fill_object(struct samldb_ctx *ac, const char *type)
+{
+ int ret;
+
+ /* first look for the template */
+ ac->type = type;
+ ret = samldb_add_step(ac, samldb_search_template);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* then apply it */
+ ret = samldb_add_step(ac, samldb_apply_template);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* search for a parent domain objet */
+ ac->check_dn = ac->req->op.add.message->dn;
+ ret = samldb_add_step(ac, samldb_get_parent_domain);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* check if we have a valid samAccountName */
+ ret = samldb_add_step(ac, samldb_check_samAccountName);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* check account_type/group_type */
+ ret = samldb_add_step(ac, samldb_check_samAccountType);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* check if we have a valid SID */
+ ac->sid = samdb_result_dom_sid(ac, ac->msg, "objectSid");
+ if ( ! ac->sid) {
+ ret = samldb_add_step(ac, samldb_new_sid);
+ if (ret != LDB_SUCCESS) return ret;
+ } else {
+ ret = samldb_add_step(ac, samldb_get_sid_domain);
+ if (ret != LDB_SUCCESS) return ret;
}
- if ( ! samldb_msg_add_sid(module, msg2, "objectSid", sid)) {
- talloc_free(sid);
+ ret = samldb_add_step(ac, samldb_check_sid);
+ if (ret != LDB_SUCCESS) return ret;
+
+ ret = samldb_add_step(ac, samldb_notice_sid);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* finally proceed with adding the entry */
+ ret = samldb_add_step(ac, samldb_add_entry);
+ if (ret != LDB_SUCCESS) return ret;
+
+ return samldb_first_step(ac);
+
+ /* TODO: userAccountControl, badPwdCount, codePage,
+ * countryCode, badPasswordTime, lastLogoff, lastLogon,
+ * pwdLastSet, primaryGroupID, accountExpires, logonCount */
+
+}
+
+static int samldb_foreign_notice_sid_callback(struct ldb_request *req,
+ struct ldb_reply *ares)
+{
+ struct samldb_ctx *ac;
+ const char *nextRid;
+ const char *name;
+ int ret;
+
+ ac = talloc_get_type(req->context, struct samldb_ctx);
+
+ if (!ares) {
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ goto done;
+ }
+ if (ares->error != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, ares->controls,
+ ares->response, ares->error);
+ }
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+ /* save entry */
+ if (ac->next_rid != 0) {
+ /* one too many! */
+ ldb_set_errstring(ac->module->ldb,
+ "Invalid number of results while searching "
+ "for domain object");
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
+
+ nextRid = ldb_msg_find_attr_as_string(ares->message,
+ "nextRid", NULL);
+ if (nextRid == NULL) {
+ ldb_asprintf_errstring(ac->module->ldb,
+ "while looking for forign sid %s attribute nextRid not found in %s\n",
+ dom_sid_string(ares, ac->sid), ldb_dn_get_linearized(ares->message->dn));
+ ret = LDB_ERR_OPERATIONS_ERROR;
+ break;
+ }
+
+ ac->next_rid = strtol(nextRid, NULL, 0);
+
+ ac->domain_dn = talloc_steal(ac, ares->message->dn);
+
+ name = samdb_result_string(ares->message, "name", NULL);
+ ldb_debug(ac->module->ldb, LDB_DEBUG_TRACE,
+ "NOTE (strange but valid): Adding foreign SID "
+ "record with SID %s, but this domain (%s) is "
+ "not foreign in the database",
+ dom_sid_string(ares, ac->sid), name);
+
+ talloc_free(ares);
+ break;
+
+ case LDB_REPLY_REFERRAL:
+ /* ignore */
+ talloc_free(ares);
+ break;
+
+ case LDB_REPLY_DONE:
+
+ /* if this is a fake foreign SID, notice the SID */
+ if (ac->domain_dn) {
+ ret = samldb_notice_sid(ac);
+ break;
+ }
+
+ /* found, go on */
+ ret = samldb_next_step(ac);
+ break;
+ }
+
+done:
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* Find a domain object in the parents of a particular DN. */
+static int samldb_foreign_notice_sid(struct samldb_ctx *ac)
+{
+ static const char * const attrs[3] = { "nextRid", "name", NULL };
+ struct ldb_request *req;
+ NTSTATUS status;
+ char *filter;
+ int ret;
+
+ if (ac->sid == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- dom_sid = dom_sid_dup(mem_ctx, sid);
- if (!dom_sid) {
- talloc_free(mem_ctx);
+ status = dom_sid_split_rid(ac, ac->sid, &ac->domain_sid, NULL);
+ if (!NT_STATUS_IS_OK(status)) {
return LDB_ERR_OPERATIONS_ERROR;
}
- /* get the domain component part of the provided SID */
- dom_sid->num_auths--;
-
- /* find the domain DN */
-
- ret = gendb_search(module->ldb,
- mem_ctx, NULL, &dom_msgs, dom_attrs,
- "(&(objectSid=%s)(objectclass=domain))",
- ldap_encode_ndr_dom_sid(mem_ctx, dom_sid));
- if (ret >= 1) {
- /* We don't really like the idea of foreign sids that are not foreign, but it happens */
- const char *name = samdb_result_string(dom_msgs[0], "name", NULL);
- ldb_debug(module->ldb, LDB_DEBUG_TRACE, "NOTE (strange but valid): Adding foreign SID record with SID %s, but this domian (%s) is already in the database",
- dom_sid_string(mem_ctx, sid), name);
- } else if (ret == -1) {
- ldb_asprintf_errstring(module->ldb,
- "samldb_fill_foreignSecurityPrincipal_object: error searching for a domain with this sid: %s\n",
- dom_sid_string(mem_ctx, dom_sid));
- talloc_free(dom_msgs);
+
+ filter = talloc_asprintf(ac, "(&(objectSid=%s)(objectclass=domain))",
+ ldap_encode_ndr_dom_sid(ac, ac->domain_sid));
+ if (filter == NULL) {
return LDB_ERR_OPERATIONS_ERROR;
}
- /* This isn't an operation on a domain we know about, so just
- * check for the SID, looking for duplicates via the common
- * code */
- ret = samldb_notice_sid(module, msg2, sid);
- if (ret == 0) {
- talloc_steal(msg, msg2);
- *ret_msg = msg2;
+ ret = ldb_build_search_req(&req, ac->module->ldb, ac,
+ ldb_get_default_basedn(ac->module->ldb),
+ LDB_SCOPE_SUBTREE,
+ filter, attrs,
+ NULL,
+ ac, samldb_foreign_notice_sid_callback,
+ ac->req);
+
+ if (ret != LDB_SUCCESS) {
+ return ret;
}
-
- return ret;
+
+ ac->next_rid = 0;
+ return ldb_next_request(ac->module, req);
}
-/* add_record */
+static int samldb_fill_foreignSecurityPrincipal_object(struct samldb_ctx *ac)
+{
+ int ret;
-/*
- * FIXME
- *
- * Actually this module is not async at all as it does a number of sync searches
- * in the process. It still to be decided how to deal with it properly so it is
- * left SYNC for now until we think of a good solution.
- */
+ ac->sid = samdb_result_dom_sid(ac->msg, ac->msg, "objectSid");
+ if (ac->sid == NULL) {
+ ac->sid = dom_sid_parse_talloc(ac->msg,
+ (const char *)ldb_dn_get_rdn_val(ac->msg->dn)->data);
+ if (!ac->sid) {
+ ldb_set_errstring(ac->module->ldb,
+ "No valid found SID in "
+ "ForeignSecurityPrincipal CN!");
+ talloc_free(ac);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+ if ( ! samldb_msg_add_sid(ac->msg, "objectSid", ac->sid)) {
+ talloc_free(ac);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ }
+
+ /* first look for the template */
+ ac->type = "foreignSecurityPrincipal";
+ ret = samldb_add_step(ac, samldb_search_template);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* then apply it */
+ ret = samldb_add_step(ac, samldb_apply_template);
+ if (ret != LDB_SUCCESS) return ret;
+ /* check we do not already have this SID */
+ ret = samldb_add_step(ac, samldb_check_sid);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* check if we need to notice this SID */
+ ret = samldb_add_step(ac, samldb_foreign_notice_sid);
+ if (ret != LDB_SUCCESS) return ret;
+
+ /* finally proceed with adding the entry */
+ ret = samldb_add_step(ac, samldb_add_entry);
+ if (ret != LDB_SUCCESS) return ret;
+
+ return samldb_first_step(ac);
+}
+
+static int samldb_check_rdn(struct ldb_module *module, struct ldb_dn *dn)
+{
+ const char *rdn_name;
+
+ rdn_name = ldb_dn_get_rdn_name(dn);
+
+ if (strcasecmp(rdn_name, "cn") != 0) {
+ ldb_asprintf_errstring(module->ldb,
+ "Bad RDN (%s=) for samldb object, "
+ "should be CN=!\n", rdn_name);
+ return LDB_ERR_CONSTRAINT_VIOLATION;
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* add_record */
static int samldb_add(struct ldb_module *module, struct ldb_request *req)
{
- const struct ldb_message *msg = req->op.add.message;
- struct ldb_message *msg2 = NULL;
- struct ldb_request *down_req;
+ struct samldb_ctx *ac;
int ret;
ldb_debug(module->ldb, LDB_DEBUG_TRACE, "samldb_add_record\n");
- if (ldb_dn_is_special(msg->dn)) { /* do not manipulate our control entries */
+ /* do not manipulate our control entries */
+ if (ldb_dn_is_special(req->op.add.message->dn)) {
return ldb_next_request(module, req);
}
- /* is user or computer? */
- if ((samdb_find_attribute(module->ldb, msg, "objectclass", "user") != NULL) ||
- (samdb_find_attribute(module->ldb, msg, "objectclass", "computer") != NULL)) {
- /* add all relevant missing objects */
- ret = samldb_fill_user_or_computer_object(module, msg, &msg2);
- if (ret) {
+ ac = samldb_ctx_init(module, req);
+ if (ac == NULL) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* build the new msg */
+ ac->msg = ldb_msg_copy(ac, ac->req->op.add.message);
+ if (!ac->msg) {
+ talloc_free(ac);
+ ldb_debug(ac->module->ldb, LDB_DEBUG_FATAL,
+ "samldb_add: ldb_msg_copy failed!\n");
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (samdb_find_attribute(module->ldb, ac->msg,
+ "objectclass", "computer") != NULL) {
+
+ /* make sure the computer object also has the 'user'
+ * objectclass so it will be handled by the next call */
+ ret = samdb_find_or_add_value(module->ldb, ac->msg,
+ "objectclass", "user");
+ if (ret != LDB_SUCCESS) {
+ talloc_free(ac);
return ret;
}
}
- /* is group? add all relevant missing objects */
- if ( ! msg2 ) {
- if (samdb_find_attribute(module->ldb, msg, "objectclass", "group") != NULL) {
- ret = samldb_fill_group_object(module, msg, &msg2);
- if (ret) {
- return ret;
- }
+ if (samdb_find_attribute(module->ldb, ac->msg,
+ "objectclass", "user") != NULL) {
+
+ ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(ac);
+ return ret;
}
+
+ return samldb_fill_object(ac, "user");
+ }
+
+ if (samdb_find_attribute(module->ldb, ac->msg,
+ "objectclass", "group") != NULL) {
+
+ ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(ac);
+ return ret;
+ }
+
+ return samldb_fill_object(ac, "group");
}
/* perhaps a foreignSecurityPrincipal? */
- if ( ! msg2 ) {
- if (samdb_find_attribute(module->ldb, msg, "objectclass", "foreignSecurityPrincipal") != NULL) {
- ret = samldb_fill_foreignSecurityPrincipal_object(module, msg, &msg2);
- if (ret) {
- return ret;
- }
+ if (samdb_find_attribute(module->ldb, ac->msg,
+ "objectclass",
+ "foreignSecurityPrincipal") != NULL) {
+
+ ret = samldb_check_rdn(module, ac->req->op.add.message->dn);
+ if (ret != LDB_SUCCESS) {
+ talloc_free(ac);
+ return ret;
}
+
+ return samldb_fill_foreignSecurityPrincipal_object(ac);
}
- if (msg2 == NULL) {
+ talloc_free(ac);
+
+ /* nothing matched, go on */
+ return ldb_next_request(module, req);
+}
+
+/* modify */
+static int samldb_modify(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_message *msg;
+ struct ldb_message_element *el, *el2;
+ int ret;
+ unsigned int group_type, user_account_control, account_type;
+ if (ldb_dn_is_special(req->op.mod.message->dn)) { /* do not manipulate our control entries */
return ldb_next_request(module, req);
}
- down_req = talloc(req, struct ldb_request);
- if (down_req == NULL) {
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ldb_msg_find_element(req->op.mod.message, "sAMAccountType") != NULL) {
+ ldb_asprintf_errstring(module->ldb, "sAMAccountType must not be specified");
+ return LDB_ERR_UNWILLING_TO_PERFORM;
}
- *down_req = *req;
-
- down_req->op.add.message = talloc_steal(down_req, msg2);
-
- ldb_set_timeout_from_prev_req(module->ldb, req, down_req);
+ /* TODO: do not modify original request, create a new one */
- /* go on with the call chain */
- ret = ldb_next_request(module, down_req);
+ el = ldb_msg_find_element(req->op.mod.message, "groupType");
+ if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
+ req->op.mod.message = msg = ldb_msg_copy_shallow(req, req->op.mod.message);
- /* do not free down_req as the call results may be linked to it,
- * it will be freed when the upper level request get freed */
- if (ret == LDB_SUCCESS) {
- req->handle = down_req->handle;
+ group_type = strtoul((const char *)el->values[0].data, NULL, 0);
+ account_type = samdb_gtype2atype(group_type);
+ ret = samdb_msg_add_uint(module->ldb, msg, msg,
+ "sAMAccountType",
+ account_type);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ el2 = ldb_msg_find_element(msg, "sAMAccountType");
+ el2->flags = LDB_FLAG_MOD_REPLACE;
}
- return ret;
+ el = ldb_msg_find_element(req->op.mod.message, "userAccountControl");
+ if (el && el->flags & (LDB_FLAG_MOD_ADD|LDB_FLAG_MOD_REPLACE) && el->num_values == 1) {
+ req->op.mod.message = msg = ldb_msg_copy_shallow(req, req->op.mod.message);
+
+ user_account_control = strtoul((const char *)el->values[0].data, NULL, 0);
+ account_type = samdb_uf2atype(user_account_control);
+ ret = samdb_msg_add_uint(module->ldb, msg, msg,
+ "sAMAccountType",
+ account_type);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+ el2 = ldb_msg_find_element(msg, "sAMAccountType");
+ el2->flags = LDB_FLAG_MOD_REPLACE;
+ }
+ return ldb_next_request(module, req);
}
+
static int samldb_init(struct ldb_module *module)
{
return ldb_next_init(module);
}
-static const struct ldb_module_ops samldb_ops = {
+_PUBLIC_ const struct ldb_module_ops ldb_samldb_module_ops = {
.name = "samldb",
.init_context = samldb_init,
.add = samldb_add,
+ .modify = samldb_modify
};
-
-
-int samldb_module_init(void)
-{
- return ldb_register_module(&samldb_ops);
-}
git.samba.org / kai / samba.git / blobdiff