summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--source4/dsdb/samdb/ldb_modules/acl_read.c133
1 files changed, 75 insertions, 58 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/acl_read.c b/source4/dsdb/samdb/ldb_modules/acl_read.c
index 81f9bf6284..0e9de9adec 100644
--- a/source4/dsdb/samdb/ldb_modules/acl_read.c
+++ b/source4/dsdb/samdb/ldb_modules/acl_read.c
@@ -44,6 +44,9 @@ struct aclread_context {
struct ldb_request *req;
const char * const *attrs;
const struct dsdb_schema *schema;
+ bool sd;
+ bool instance_type;
+ bool object_sid;
};
struct aclread_private {
@@ -59,7 +62,7 @@ static int aclread_callback(struct ldb_request *req, struct ldb_reply *ares)
static const char *acl_attrs[] = {
"nTSecurityDescriptor",
"objectSid",
- "parentGUID",
+ "insyanceType",
NULL
};
int ret;
@@ -67,6 +70,8 @@ static int aclread_callback(struct ldb_request *req, struct ldb_reply *ares)
struct security_descriptor *sd;
struct dom_sid *sid = NULL;
TALLOC_CTX *tmp_ctx;
+ uint32_t instanceType;
+
ac = talloc_get_type(req->context, struct aclread_context);
ldb = ldb_module_get_ctx(ac->module);
if (!ares) {
@@ -79,60 +84,38 @@ static int aclread_callback(struct ldb_request *req, struct ldb_reply *ares)
tmp_ctx = talloc_new(ac);
switch (ares->type) {
case LDB_REPLY_ENTRY:
- ret = dsdb_module_search_dn(ac->module, tmp_ctx, &acl_res, ares->message->dn,
- acl_attrs,
- DSDB_FLAG_NEXT_MODULE |
- DSDB_SEARCH_SHOW_DELETED);
- if (ret != LDB_SUCCESS) {
- goto fail;
- }
- ret = dsdb_get_sd_from_ldb_message(ldb, tmp_ctx, acl_res->msgs[0], &sd);
+ ret = dsdb_get_sd_from_ldb_message(ldb, tmp_ctx, ares->message, &sd);
if (ret != LDB_SUCCESS) {
DEBUG(10, ("acl_read: cannot get descriptor\n"));
ret = LDB_ERR_OPERATIONS_ERROR;
goto fail;
}
- sid = samdb_result_dom_sid(tmp_ctx, acl_res->msgs[0], "objectSid");
- /* get the parent guid */
- parent = ldb_msg_find_element(acl_res->msgs[0], "parentGUID");
- if (parent) {
- /* the object has a parent, so we have to check for visibility */
- struct GUID parent_guid = samdb_result_guid(acl_res->msgs[0], "parentGUID");
- ret = dsdb_module_check_access_on_guid(ac->module,
- tmp_ctx,
- &parent_guid,
- SEC_ADS_LIST,
- NULL);
- if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
- talloc_free(tmp_ctx);
- return LDB_SUCCESS;
- } else if (ret != LDB_SUCCESS) {
- goto fail;
- }
+ sid = samdb_result_dom_sid(tmp_ctx, ares->message, "objectSid");
+ /* get the object instance type */
+ instanceType = ldb_msg_find_attr_as_uint(ares->message,
+ "instanceType", 0);
+ if (!ldb_dn_is_null(ares->message->dn) && !(instanceType & INSTANCE_TYPE_IS_NC_HEAD))
+ {
+ /* the object has a parent, so we have to check for visibility */
+ struct ldb_dn *parent_dn = ldb_dn_get_parent(tmp_ctx, ares->message->dn);
+ ret = dsdb_module_check_access_on_dn(ac->module,
+ tmp_ctx,
+ parent_dn,
+ SEC_ADS_LIST,
+ NULL);
+ if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
+ talloc_free(tmp_ctx);
+ return LDB_SUCCESS;
+ } else if (ret != LDB_SUCCESS) {
+ goto fail;
+ }
}
/* for every element in the message check RP */
i = 0;
while (i < ares->message->num_elements) {
- char *p, *new_attr;
const struct dsdb_attribute *attr;
- p = strchr(ares->message->elements[i].name, ';');
- if (!p) {
- attr = dsdb_attribute_by_lDAPDisplayName(ac->schema,
- ares->message->elements[i].name);
- } else {
- new_attr = talloc_strndup(tmp_ctx,
- ares->message->elements[i].name,
- (size_t)(p -ares->message->elements[i].name));
- if (!new_attr) {
- ldb_oom(ldb);
- ret = LDB_ERR_OPERATIONS_ERROR;
- goto fail;
- }
- attr = dsdb_attribute_by_lDAPDisplayName(ac->schema,
- new_attr);
- talloc_free(new_attr);
- }
-
+ attr = dsdb_attribute_by_lDAPDisplayName(ac->schema,
+ ares->message->elements[i].name);
if (!attr) {
DEBUG(2, ("acl_read: cannot find attribute %s in schema\n",
ares->message->elements[i].name));
@@ -142,6 +125,10 @@ static int aclread_callback(struct ldb_request *req, struct ldb_reply *ares)
/* nTSecurityDescriptor is a special case */
if (ldb_attr_cmp("nTSecurityDescriptor",
ares->message->elements[i].name) == 0) {
+ if (ac->sd) {
+ ldb_msg_remove_attr(ares->message, ares->message->elements[i].name);
+ ret = LDB_SUCCESS;
+ }
ret = acl_check_access_on_attribute(ac->module,
tmp_ctx,
sd,
@@ -171,6 +158,12 @@ static int aclread_callback(struct ldb_request *req, struct ldb_reply *ares)
goto fail;
}
}
+ if (ac->instance_type) {
+ ldb_msg_remove_attr(ares->message, "instanceType");
+ }
+ if (ac->object_sid) {
+ ldb_msg_remove_attr(ares->message, "objectSid");
+ }
talloc_free(tmp_ctx);
return ldb_module_send_entry(ac->req, ares->message, ares->controls);
case LDB_REPLY_REFERRAL:
@@ -195,11 +188,12 @@ static int aclread_search(struct ldb_module *module, struct ldb_request *req)
struct ldb_request *down_req;
struct ldb_control *as_system = ldb_request_get_control(req, LDB_CONTROL_AS_SYSTEM_OID);
struct ldb_result *res;
- struct ldb_message_element *parent;
struct aclread_private *p;
bool is_untrusted = ldb_req_is_untrusted(req);
+ const char * const *attrs = NULL;
+ uint32_t instanceType;
static const char *acl_attrs[] = {
- "parentGUID",
+ "instanceType",
NULL
};
@@ -226,18 +220,19 @@ static int aclread_search(struct ldb_module *module, struct ldb_request *req)
DSDB_SEARCH_SHOW_DELETED);
if (ret != LDB_SUCCESS) {
return ldb_error(ldb, ret,
- "acl_read: Error retrieving SD for base.");
+ "acl_read: Error retrieving instanceType for base.");
}
-
- parent = ldb_msg_find_element(res->msgs[0], "parentGUID");
- if (parent) {
+ instanceType = ldb_msg_find_attr_as_uint(res->msgs[0],
+ "instanceType", 0);
+ if (instanceType != 0 && !(instanceType & INSTANCE_TYPE_IS_NC_HEAD))
+ {
/* the object has a parent, so we have to check for visibility */
- struct GUID parent_guid = samdb_result_guid(res->msgs[0], "parentGUID");
- ret = dsdb_module_check_access_on_guid(module,
- req,
- &parent_guid,
- SEC_ADS_LIST,
- NULL);
+ struct ldb_dn *parent_dn = ldb_dn_get_parent(req, req->op.search.base);
+ ret = dsdb_module_check_access_on_dn(module,
+ req,
+ parent_dn,
+ SEC_ADS_LIST,
+ NULL);
if (ret == LDB_ERR_INSUFFICIENT_ACCESS_RIGHTS) {
return ldb_module_done(req, NULL, NULL, LDB_ERR_NO_SUCH_OBJECT);
} else if (ret != LDB_SUCCESS) {
@@ -255,13 +250,35 @@ static int aclread_search(struct ldb_module *module, struct ldb_request *req)
if (!ac->schema) {
return ldb_operr(ldb);
}
+ ac->sd = !(ldb_attr_in_list(req->op.search.attrs, "nTSecurityDescriptor"));
+ if (req->op.search.attrs && !ldb_attr_in_list(req->op.search.attrs, "*")) {
+ if (!ldb_attr_in_list(req->op.search.attrs, "instanceType")) {
+ ac->instance_type = true;
+ attrs = ldb_attr_list_copy_add(ac, req->op.search.attrs, "instanceType");
+ } else {
+ attrs = req->op.search.attrs;
+ }
+ if (!ldb_attr_in_list(req->op.search.attrs, "objectSid")) {
+ ac->object_sid = true;
+ attrs = ldb_attr_list_copy_add(ac, attrs, "objectSid");
+ }
+ }
+ if (ac->sd) {
+ /* avoid replacing all attributes with nTSecurityDescriptor
+ * if attribute list is empty */
+ if (!attrs) {
+ attrs = ldb_attr_list_copy_add(ac, attrs, "*");
+ }
+ attrs = ldb_attr_list_copy_add(ac, attrs, "nTSecurityDescriptor");
+ }
+ ac->attrs = req->op.search.attrs;
ret = ldb_build_search_req_ex(&down_req,
ldb, ac,
req->op.search.base,
req->op.search.scope,
req->op.search.tree,
- req->op.search.attrs,
+ attrs,
req->controls,
ac, aclread_callback,
req);
generated by cgit (git 2.34.1) at 2024-11-27 04:14:16 +0000