/*
Unix SMB/CIFS implementation.
-
rootDSE ldb module
Copyright (C) Andrew Tridgell 2005
#include "version.h"
#include "dsdb/samdb/ldb_modules/util.h"
#include "libcli/security/security.h"
+#include "libcli/security/session.h"
#include "librpc/ndr/libndr.h"
#include "auth/auth.h"
#include "param/param.h"
char **controls;
unsigned int num_partitions;
struct ldb_dn **partitions;
+ bool block_anonymous;
};
/*
}
if (do_attribute(attrs, "dnsHostName")) {
- if (ldb_msg_add_string(msg, "dnsHostName",
- samdb_search_string(ldb, msg, samdb_server_dn(ldb, msg),
- "dNSHostName", NULL)) != LDB_SUCCESS) {
- goto failed;
+ struct ldb_result *res;
+ int ret;
+ const char *dns_attrs[] = { "dNSHostName", NULL };
+ ret = dsdb_module_search_dn(module, msg, &res, samdb_server_dn(ldb, msg),
+ dns_attrs, DSDB_FLAG_NEXT_MODULE|DSDB_FLAG_TRUSTED, req);
+ if (ret == LDB_SUCCESS) {
+ const char *hostname = ldb_msg_find_attr_as_string(res->msgs[0], "dNSHostName", NULL);
+ if (hostname != NULL) {
+ if (ldb_msg_add_string(msg, "dNSHostName", hostname)) {
+ goto failed;
+ }
+ }
}
}
uint64_t seq_num;
int ret = ldb_sequence_number(ldb, LDB_SEQ_HIGHEST_SEQ, &seq_num);
if (ret == LDB_SUCCESS) {
- if (ldb_msg_add_fmt(msg, "highestCommittedUSN",
- "%llu", (unsigned long long)seq_num) != LDB_SUCCESS) {
+ if (samdb_msg_add_uint64(ldb, msg, msg,
+ "highestCommittedUSN",
+ seq_num) != LDB_SUCCESS) {
goto failed;
}
}
n++;
}
- if (ldb_msg_add_fmt(msg, "dsSchemaAttrCount",
- "%u", n) != LDB_SUCCESS) {
+ if (samdb_msg_add_uint(ldb, msg, msg, "dsSchemaAttrCount",
+ n) != LDB_SUCCESS) {
goto failed;
}
}
n++;
}
- if (ldb_msg_add_fmt(msg, "dsSchemaClassCount",
- "%u", n) != LDB_SUCCESS) {
+ if (samdb_msg_add_uint(ldb, msg, msg, "dsSchemaClassCount",
+ n) != LDB_SUCCESS) {
goto failed;
}
}
if (schema && do_attribute_explicit(attrs, "dsSchemaPrefixCount")) {
- if (ldb_msg_add_fmt(msg, "dsSchemaPrefixCount",
- "%u", schema->prefixmap->length) != LDB_SUCCESS) {
+ if (samdb_msg_add_uint(ldb, msg, msg, "dsSchemaPrefixCount",
+ schema->prefixmap->length) != LDB_SUCCESS) {
goto failed;
}
}
}
if (do_attribute(attrs, "domainFunctionality")) {
- if (ldb_msg_add_fmt(msg, "domainFunctionality",
- "%d", dsdb_functional_level(ldb)) != LDB_SUCCESS) {
+ if (samdb_msg_add_int(ldb, msg, msg, "domainFunctionality",
+ dsdb_functional_level(ldb)) != LDB_SUCCESS) {
goto failed;
}
}
if (do_attribute(attrs, "forestFunctionality")) {
- if (ldb_msg_add_fmt(msg, "forestFunctionality",
- "%d", dsdb_forest_functional_level(ldb)) != LDB_SUCCESS) {
+ if (samdb_msg_add_int(ldb, msg, msg, "forestFunctionality",
+ dsdb_forest_functional_level(ldb)) != LDB_SUCCESS) {
goto failed;
}
}
if (do_attribute(attrs, "domainControllerFunctionality")
&& (val = talloc_get_type(ldb_get_opaque(ldb, "domainControllerFunctionality"), int))) {
- if (ldb_msg_add_fmt(msg, "domainControllerFunctionality",
- "%d", *val) != LDB_SUCCESS) {
+ if (samdb_msg_add_int(ldb, msg, msg,
+ "domainControllerFunctionality",
+ *val) != LDB_SUCCESS) {
goto failed;
}
}
}
/*
- mark our registered controls as non-critical in the request
-
- This is needed as clients may mark controls as critical even if they
- are not needed at all in a request. For example, the centrify client
- sets the SD_FLAGS control as critical on ldap modify requests which
- are setting the dNSHostName attribute on the machine account. That
- request doesn't need SD_FLAGS at all, but centrify adds it on all
- ldap requests.
+ filter from controls from clients in several ways
+
+ 1) mark our registered controls as non-critical in the request
+
+ This is needed as clients may mark controls as critical even if
+ they are not needed at all in a request. For example, the centrify
+ client sets the SD_FLAGS control as critical on ldap modify
+ requests which are setting the dNSHostName attribute on the
+ machine account. That request doesn't need SD_FLAGS at all, but
+ centrify adds it on all ldap requests.
+
+ 2) if this request is untrusted then remove any non-registered
+ controls that are non-critical
+
+ This is used on ldap:// connections to prevent remote users from
+ setting an internal control that may be dangerous
+
+ 3) if this request is untrusted then fail any request that includes
+ a critical non-registered control
*/
-static void rootdse_mark_noncritical(struct ldb_module *module, struct ldb_control **controls)
+static int rootdse_filter_controls(struct ldb_module *module, struct ldb_request *req)
{
unsigned int i, j;
struct private_data *priv = talloc_get_type(ldb_module_get_private(module), struct private_data);
+ bool is_untrusted;
+
+ if (!req->controls) {
+ return LDB_SUCCESS;
+ }
- if (!controls) return;
+ is_untrusted = ldb_req_is_untrusted(req);
- for (i=0; controls[i]; i++) {
- if (controls[i]->critical == 0) {
+ for (i=0; req->controls[i]; i++) {
+ bool is_registered = false;
+ bool is_critical = (req->controls[i]->critical != 0);
+
+ if (req->controls[i]->oid == NULL) {
continue;
}
- for (j=0; j<priv->num_controls; j++) {
- if (strcasecmp(priv->controls[j], controls[i]->oid) == 0) {
- controls[i]->critical = 0;
+
+ if (is_untrusted || is_critical) {
+ for (j=0; j<priv->num_controls; j++) {
+ if (strcasecmp(priv->controls[j], req->controls[i]->oid) == 0) {
+ is_registered = true;
+ break;
+ }
+ }
+ }
+
+ if (is_untrusted && !is_registered) {
+ if (!is_critical) {
+ /* remove it by marking the oid NULL */
+ req->controls[i]->oid = NULL;
+ req->controls[i]->data = NULL;
+ req->controls[i]->critical = 0;
+ continue;
}
+ /* its a critical unregistered control - give
+ an error */
+ ldb_asprintf_errstring(ldb_module_get_ctx(module),
+ "Attempt to use critical non-registered control '%s'",
+ req->controls[i]->oid);
+ return LDB_ERR_UNSUPPORTED_CRITICAL_EXTENSION;
+ }
+
+ if (!is_critical) {
+ continue;
+ }
+
+ if (is_registered) {
+ req->controls[i]->critical = 0;
+ }
+ }
+
+ return LDB_SUCCESS;
+}
+
+/* Ensure that anonymous users are not allowed to make anything other than rootDSE search operations */
+
+static int rootdse_filter_operations(struct ldb_module *module, struct ldb_request *req)
+{
+ struct auth_session_info *session_info;
+ struct private_data *priv = talloc_get_type(ldb_module_get_private(module), struct private_data);
+ bool is_untrusted = ldb_req_is_untrusted(req);
+ bool is_anonymous = true;
+ if (is_untrusted == false) {
+ return LDB_SUCCESS;
+ }
+
+ session_info = (struct auth_session_info *)ldb_get_opaque(ldb_module_get_ctx(module), "sessionInfo");
+ if (session_info) {
+ is_anonymous = security_token_is_anonymous(session_info->security_token);
+ }
+
+ if (is_anonymous == false || (priv && priv->block_anonymous == false)) {
+ return LDB_SUCCESS;
+ }
+
+ if (req->operation == LDB_SEARCH) {
+ if (req->op.search.scope == LDB_SCOPE_BASE && ldb_dn_is_null(req->op.search.base)) {
+ return LDB_SUCCESS;
}
}
+ ldb_set_errstring(ldb_module_get_ctx(module), "Operation unavailable without authentication");
+ return LDB_ERR_OPERATIONS_ERROR;
}
static int rootdse_search(struct ldb_module *module, struct ldb_request *req)
struct ldb_request *down_req;
int ret;
- rootdse_mark_noncritical(module, req->controls);
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
ldb = ldb_module_get_ctx(module);
data->controls = NULL;
data->num_partitions = 0;
data->partitions = NULL;
+ data->block_anonymous = true;
+
ldb_module_set_private(module, data);
ldb_set_default_dns(ldb);
Then stuff these values into an opaque
*/
- ret = ldb_search(ldb, mem_ctx, &res,
- ldb_get_default_basedn(ldb),
- LDB_SCOPE_BASE, attrs, NULL);
+ ret = dsdb_module_search(module, mem_ctx, &res,
+ ldb_get_default_basedn(ldb),
+ LDB_SCOPE_BASE, attrs, DSDB_FLAG_NEXT_MODULE|DSDB_FLAG_TRUSTED, NULL, NULL);
if (ret == LDB_SUCCESS && res->count == 1) {
int domain_behaviour_version
= ldb_msg_find_attr_as_int(res->msgs[0],
}
}
- ret = ldb_search(ldb, mem_ctx, &res,
- samdb_partitions_dn(ldb, mem_ctx),
- LDB_SCOPE_BASE, attrs, NULL);
+ ret = dsdb_module_search(module, mem_ctx, &res,
+ samdb_partitions_dn(ldb, mem_ctx),
+ LDB_SCOPE_BASE, attrs, DSDB_FLAG_NEXT_MODULE|DSDB_FLAG_TRUSTED, NULL, NULL);
if (ret == LDB_SUCCESS && res->count == 1) {
int forest_behaviour_version
= ldb_msg_find_attr_as_int(res->msgs[0],
}
}
- ret = ldb_search(ldb, mem_ctx, &res,
- ldb_dn_new(mem_ctx, ldb, ""),
- LDB_SCOPE_BASE, ds_attrs, NULL);
+ /* For now, our own server's location in the DB is recorded in
+ * the @ROOTDSE record */
+ ret = dsdb_module_search(module, mem_ctx, &res,
+ ldb_dn_new(mem_ctx, ldb, "@ROOTDSE"),
+ LDB_SCOPE_BASE, ds_attrs, DSDB_FLAG_NEXT_MODULE|DSDB_FLAG_TRUSTED, NULL, NULL);
if (ret == LDB_SUCCESS && res->count == 1) {
struct ldb_dn *ds_dn
= ldb_msg_find_attr_as_dn(ldb, mem_ctx, res->msgs[0],
"dsServiceName");
if (ds_dn) {
- ret = ldb_search(ldb, mem_ctx, &res, ds_dn,
- LDB_SCOPE_BASE, attrs, NULL);
+ ret = dsdb_module_search(module, mem_ctx, &res, ds_dn,
+ LDB_SCOPE_BASE, attrs,
+ DSDB_FLAG_NEXT_MODULE|DSDB_FLAG_TRUSTED, NULL, NULL);
if (ret == LDB_SUCCESS && res->count == 1) {
int domain_controller_behaviour_version
= ldb_msg_find_attr_as_int(res->msgs[0],
}
}
+ data->block_anonymous = dsdb_block_anonymous_ops(module, NULL);
+
talloc_free(mem_ctx);
return LDB_SUCCESS;
* ldb_message object.
*/
static int dsdb_find_optional_feature(struct ldb_module *module, struct ldb_context *ldb,
- TALLOC_CTX *mem_ctx, struct GUID op_feature_guid, struct ldb_message **msg)
+ TALLOC_CTX *mem_ctx, struct GUID op_feature_guid, struct ldb_message **msg,
+ struct ldb_request *parent)
{
struct ldb_result *res;
TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
int ret;
ret = dsdb_module_search(module, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE,
- NULL,
- DSDB_FLAG_NEXT_MODULE |
- DSDB_SEARCH_SEARCH_ALL_PARTITIONS,
+ NULL,
+ DSDB_FLAG_NEXT_MODULE |
+ DSDB_SEARCH_SEARCH_ALL_PARTITIONS |
+ DSDB_FLAG_TRUSTED,
+ parent,
"(&(objectClass=msDS-OptionalFeature)"
"(msDS-OptionalFeatureGUID=%s))",GUID_string(tmp_ctx, &op_feature_guid));
}
static int rootdse_enable_recycle_bin(struct ldb_module *module,struct ldb_context *ldb,
- TALLOC_CTX *mem_ctx, struct ldb_dn *op_feature_scope_dn,
- struct ldb_message *op_feature_msg)
+ TALLOC_CTX *mem_ctx, struct ldb_dn *op_feature_scope_dn,
+ struct ldb_message *op_feature_msg, struct ldb_request *parent)
{
int ret;
const int domain_func_level = dsdb_functional_level(ldb);
ldb_msg_add_linearized_dn(msg, "msDS-EnabledFeature", op_feature_msg->dn);
msg->elements[el_count++].flags = LDB_FLAG_MOD_ADD;
- ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
+ ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"rootdse_enable_recycle_bin: Failed to modify object %s - %s",
}
msg->dn = op_feature_scope_dn;
- ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE);
+ ret = dsdb_module_modify(module, msg, DSDB_FLAG_NEXT_MODULE, parent);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"rootdse_enable_recycle_bin: Failed to modify object %s - %s",
return LDB_ERR_UNWILLING_TO_PERFORM;
}
- ret = dsdb_find_optional_feature(module, ldb, tmp_ctx, op_feature_guid, &op_feature_msg);
+ ret = dsdb_find_optional_feature(module, ldb, tmp_ctx, op_feature_guid, &op_feature_msg, req);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
"rootdse: unable to find optional feature for %s - %s",
if (strcasecmp(DS_GUID_FEATURE_RECYCLE_BIN, guid_string) == 0) {
ret = rootdse_enable_recycle_bin(module, ldb,
tmp_ctx, op_feature_scope_dn,
- op_feature_msg);
+ op_feature_msg, req);
} else {
ldb_asprintf_errstring(ldb,
"rootdse: unknown optional feature %s",
static int rootdse_add(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
+ int ret;
- rootdse_mark_noncritical(module, req->controls);
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
/*
If dn is not "" we should let it pass through
static int rootdse_become_master(struct ldb_module *module,
struct ldb_request *req,
- uint32_t role)
+ enum drepl_role_master role)
{
struct drepl_takeFSMORole r;
struct messaging_context *msg;
struct loadparm_context *lp_ctx = ldb_get_opaque(ldb, "loadparm");
NTSTATUS status_call;
WERROR status_fn;
+ bool am_rodc;
struct dcerpc_binding_handle *irpc_handle;
+ int ret;
+
+ ret = samdb_rodc(ldb, &am_rodc);
+ if (ret != LDB_SUCCESS) {
+ return ldb_error(ldb, ret, "Could not determine if server is RODC.");
+ }
+
+ if (am_rodc) {
+ return ldb_error(ldb, LDB_ERR_UNWILLING_TO_PERFORM,
+ "RODC cannot become a role master.");
+ }
msg = messaging_client_init(tmp_ctx, lpcfg_messaging_path(tmp_ctx, lp_ctx),
ldb_get_event_context(ldb));
static int rootdse_modify(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
+ int ret;
- rootdse_mark_noncritical(module, req->controls);
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
/*
If dn is not "" we should let it pass through
return LDB_ERR_UNWILLING_TO_PERFORM;
}
+static int rootdse_rename(struct ldb_module *module, struct ldb_request *req)
+{
+ struct ldb_context *ldb = ldb_module_get_ctx(module);
+ int ret;
+
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ /*
+ If dn is not "" we should let it pass through
+ */
+ if (!ldb_dn_is_null(req->op.rename.olddn)) {
+ return ldb_next_request(module, req);
+ }
+
+ ldb_set_errstring(ldb, "rootdse_remove: you cannot rename the rootdse entry!");
+ return LDB_ERR_NO_SUCH_OBJECT;
+}
+
static int rootdse_delete(struct ldb_module *module, struct ldb_request *req)
{
struct ldb_context *ldb = ldb_module_get_ctx(module);
+ int ret;
- rootdse_mark_noncritical(module, req->controls);
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
/*
If dn is not "" we should let it pass through
return LDB_ERR_NO_SUCH_OBJECT;
}
-_PUBLIC_ const struct ldb_module_ops ldb_rootdse_module_ops = {
+static int rootdse_extended(struct ldb_module *module, struct ldb_request *req)
+{
+ int ret;
+
+ ret = rootdse_filter_operations(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ ret = rootdse_filter_controls(module, req);
+ if (ret != LDB_SUCCESS) {
+ return ret;
+ }
+
+ return ldb_next_request(module, req);
+}
+
+static const struct ldb_module_ops ldb_rootdse_module_ops = {
.name = "rootdse",
.init_context = rootdse_init,
.search = rootdse_search,
.request = rootdse_request,
.add = rootdse_add,
.modify = rootdse_modify,
+ .rename = rootdse_rename,
+ .extended = rootdse_extended,
.del = rootdse_delete
};
+
+int ldb_rootdse_module_init(const char *version)
+{
+ LDB_MODULE_CHECK_VERSION(version);
+ return ldb_register_module(&ldb_rootdse_module_ops);
+}