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-rw-r--r--source4/dsdb/samdb/ldb_modules/extended_dn.c399
1 files changed, 355 insertions, 44 deletions
diff --git a/source4/dsdb/samdb/ldb_modules/extended_dn.c b/source4/dsdb/samdb/ldb_modules/extended_dn.c
index e40190e86f..6a7ed4e7c6 100644
--- a/source4/dsdb/samdb/ldb_modules/extended_dn.c
+++ b/source4/dsdb/samdb/ldb_modules/extended_dn.c
@@ -202,10 +202,14 @@ struct extended_context {
struct ldb_module *module;
struct ldb_request *req;
-
+ struct ldb_control *control;
+ struct ldb_dn *basedn;
+ char *wellknown_object;
+ bool inject;
bool remove_guid;
bool remove_sid;
int extended_type;
+ const char * const *cast_attrs;
};
static int extended_callback(struct ldb_request *req, struct ldb_reply *ares)
@@ -226,13 +230,15 @@ static int extended_callback(struct ldb_request *req, struct ldb_reply *ares)
switch (ares->type) {
case LDB_REPLY_ENTRY:
- /* for each record returned post-process to add any derived
- attributes that have been asked for */
- ret = inject_extended_dn(ares->message, ac->module->ldb,
- ac->extended_type, ac->remove_guid,
- ac->remove_sid);
- if (ret != LDB_SUCCESS) {
- return ldb_module_done(ac->req, NULL, NULL, ret);
+ if (ac->inject) {
+ /* for each record returned post-process to add any derived
+ attributes that have been asked for */
+ ret = inject_extended_dn(ares->message, ac->module->ldb,
+ ac->extended_type, ac->remove_guid,
+ ac->remove_sid);
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, ret);
+ }
}
return ldb_module_send_entry(ac->req, ares->message);
@@ -248,6 +254,118 @@ static int extended_callback(struct ldb_request *req, struct ldb_reply *ares)
return LDB_SUCCESS;
}
+static int extended_base_callback(struct ldb_request *req, struct ldb_reply *ares)
+{
+ struct extended_context *ac;
+ struct ldb_request *down_req;
+ struct ldb_control **saved_controls;
+ struct ldb_message_element *el;
+ int ret;
+ size_t i;
+ size_t wkn_len = 0;
+ char *valstr = NULL;
+ const char *found = NULL;
+
+ ac = talloc_get_type(req->context, struct extended_context);
+
+ 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);
+ }
+
+ switch (ares->type) {
+ case LDB_REPLY_ENTRY:
+ if (!ac->wellknown_object) {
+ ac->basedn = ares->message->dn;
+ break;
+ }
+
+ wkn_len = strlen(ac->wellknown_object);
+
+ el = ldb_msg_find_element(ares->message, "wellKnownObjects");
+ if (!el) {
+ ac->basedn = NULL;
+ break;
+ }
+
+ for (i=0; i < el->num_values; i++) {
+ valstr = talloc_strndup(ac,
+ (const char *)el->values[i].data,
+ el->values[i].length);
+ if (!valstr) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ if (strncasecmp(valstr, ac->wellknown_object, wkn_len) != 0) {
+ talloc_free(valstr);
+ continue;
+ }
+
+ found = &valstr[wkn_len];
+ break;
+ }
+
+ if (!found) {
+ break;
+ }
+
+ ac->basedn = ldb_dn_new(ac, ac->module->ldb, found);
+ talloc_free(valstr);
+ if (!ac->basedn) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ break;
+
+ case LDB_REPLY_REFERRAL:
+ break;
+
+ case LDB_REPLY_DONE:
+
+ if (!ac->basedn) {
+ const char *str = talloc_asprintf(req, "Base-DN '%s' not found",
+ ldb_dn_get_linearized(ac->req->op.search.base));
+ ldb_set_errstring(ac->module->ldb, str);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_NO_SUCH_OBJECT);
+ }
+
+ ret = ldb_build_search_req_ex(&down_req,
+ ac->module->ldb, ac,
+ ac->basedn,
+ ac->req->op.search.scope,
+ ac->req->op.search.tree,
+ ac->cast_attrs,
+ ac->req->controls,
+ ac, extended_callback,
+ ac->req);
+ if (ret != LDB_SUCCESS) {
+ return ldb_module_done(ac->req, NULL, NULL, LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ if (ac->control) {
+ /* save it locally and remove it from the list */
+ /* we do not need to replace them later as we
+ * are keeping the original req intact */
+ if (!save_controls(ac->control, down_req, &saved_controls)) {
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ }
+
+ /* perform the search */
+ return ldb_next_request(ac->module, down_req);
+ }
+ return LDB_SUCCESS;
+}
static int extended_search(struct ldb_module *module, struct ldb_request *req)
{
@@ -256,25 +374,190 @@ static int extended_search(struct ldb_module *module, struct ldb_request *req)
struct ldb_control **saved_controls;
struct extended_context *ac;
struct ldb_request *down_req;
- const char * const *cast_attrs = NULL;
char **new_attrs;
int ret;
+ struct ldb_dn *base_dn = NULL;
+ enum ldb_scope base_dn_scope = LDB_SCOPE_BASE;
+ const char *base_dn_filter = NULL;
+ const char * const *base_dn_attrs = NULL;
+ char *wellknown_object = NULL;
+ static const char *dnattr[] = {
+ "distinguishedName",
+ NULL
+ };
+ static const char *wkattr[] = {
+ "wellKnownObjects",
+ NULL
+ };
+
+ if (ldb_dn_is_special(req->op.search.base)) {
+ char *dn;
+
+ dn = ldb_dn_alloc_linearized(req, req->op.search.base);
+ if (!dn) {
+ ldb_oom(module->ldb);
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (strncasecmp(dn, "<SID=", 5) == 0) {
+ char *str;
+ char *valstr;
+ char *p;
+
+ p = strchr(dn, '=');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+
+ p[0] = '\0';
+ p++;
+
+ str = p;
+
+ p = strchr(str, '>');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+ p[0] = '\0';
+
+ if (strncasecmp(str, "S-", 2) == 0) {
+ valstr = str;
+ } else {
+ DATA_BLOB binary;
+ binary = strhex_to_data_blob(str);
+ if (!binary.data) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ valstr = ldb_binary_encode(req, binary);
+ data_blob_free(&binary);
+ if (!valstr) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ }
+
+ /* TODO: do a search over all partitions */
+ base_dn = ldb_get_default_basedn(module->ldb);
+ base_dn_filter = talloc_asprintf(req, "(objectSid=%s)", valstr);
+ if (!base_dn_filter) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ base_dn_scope = LDB_SCOPE_SUBTREE;
+ base_dn_attrs = dnattr;
+ } else if (strncasecmp(dn, "<GUID=", 6) == 0) {
+ char *str;
+ char *valstr;
+ char *p;
+
+ p = strchr(dn, '=');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+
+ p[0] = '\0';
+ p++;
+
+ str = p;
+
+ p = strchr(str, '>');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+ p[0] = '\0';
+
+ if (strchr(str, '-')) {
+ valstr = str;
+ } else {
+ DATA_BLOB binary;
+ binary = strhex_to_data_blob(str);
+ if (!binary.data) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ valstr = ldb_binary_encode(req, binary);
+ data_blob_free(&binary);
+ if (!valstr) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ }
+
+ /* TODO: do a search over all partitions */
+ base_dn = ldb_get_default_basedn(module->ldb);
+ base_dn_filter = talloc_asprintf(req, "(objectGUID=%s)", valstr);
+ if (!base_dn_filter) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ base_dn_scope = LDB_SCOPE_SUBTREE;
+ base_dn_attrs = dnattr;
+ } else if (strncasecmp(dn, "<WKGUID=", 8) == 0) {
+ char *tail_str;
+ char *p;
+
+ p = strchr(dn, ',');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+
+ p[0] = '\0';
+ p++;
+
+ wellknown_object = talloc_asprintf(req, "B:32:%s:", &dn[8]);
+ if (!wellknown_object) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+
+ tail_str = p;
+ p = strchr(tail_str, '>');
+ if (!p) {
+ return LDB_ERR_INVALID_DN_SYNTAX;
+ }
+ p[0] = '\0';
+
+ base_dn = ldb_dn_new(req, module->ldb, tail_str);
+ if (!base_dn) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ base_dn_filter = talloc_strdup(req, "(objectClass=*)");
+ if (!base_dn_filter) {
+ ldb_oom(ac->module->ldb);
+ return ldb_module_done(ac->req, NULL, NULL,
+ LDB_ERR_OPERATIONS_ERROR);
+ }
+ base_dn_scope = LDB_SCOPE_BASE;
+ base_dn_attrs = wkattr;
+ }
+ talloc_free(dn);
+ }
/* check if there's an extended dn control */
control = ldb_request_get_control(req, LDB_CONTROL_EXTENDED_DN_OID);
- if (control == NULL) {
+ if (control == NULL && base_dn_filter == NULL) {
/* not found go on */
return ldb_next_request(module, req);
}
- if (control->data) {
+ if (control && control->data) {
extended_ctrl = talloc_get_type(control->data, struct ldb_extended_dn_control);
if (!extended_ctrl) {
return LDB_ERR_PROTOCOL_ERROR;
}
}
- ac = talloc(req, struct extended_context);
+ ac = talloc_zero(req, struct extended_context);
if (ac == NULL) {
ldb_oom(module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
@@ -282,49 +565,75 @@ static int extended_search(struct ldb_module *module, struct ldb_request *req)
ac->module = module;
ac->req = req;
+ ac->control = control;
+ ac->basedn = NULL;
+ ac->wellknown_object = wellknown_object;
+ ac->inject = false;
ac->remove_guid = false;
ac->remove_sid = false;
- if (extended_ctrl) {
- ac->extended_type = extended_ctrl->type;
- } else {
- ac->extended_type = 0;
- }
- /* check if attrs only is specified, in that case check wether we need to modify them */
- if (req->op.search.attrs) {
- if (! is_attr_in_list(req->op.search.attrs, "objectGUID")) {
- ac->remove_guid = true;
- }
- if (! is_attr_in_list(req->op.search.attrs, "objectSID")) {
- ac->remove_sid = true;
+ if (control) {
+ ac->inject = true;
+ if (extended_ctrl) {
+ ac->extended_type = extended_ctrl->type;
+ } else {
+ ac->extended_type = 0;
}
- if (ac->remove_guid || ac->remove_sid) {
- new_attrs = copy_attrs(ac, req->op.search.attrs);
- if (new_attrs == NULL) {
- ldb_oom(module->ldb);
- return LDB_ERR_OPERATIONS_ERROR;
+
+ /* check if attrs only is specified, in that case check wether we need to modify them */
+ if (req->op.search.attrs) {
+ if (! is_attr_in_list(req->op.search.attrs, "objectGUID")) {
+ ac->remove_guid = true;
}
-
- if (ac->remove_guid) {
- if (!add_attrs(ac, &new_attrs, "objectGUID"))
- return LDB_ERR_OPERATIONS_ERROR;
+ if (! is_attr_in_list(req->op.search.attrs, "objectSID")) {
+ ac->remove_sid = true;
}
- if (ac->remove_sid) {
- if (!add_attrs(ac, &new_attrs, "objectSID"))
+ if (ac->remove_guid || ac->remove_sid) {
+ new_attrs = copy_attrs(ac, req->op.search.attrs);
+ if (new_attrs == NULL) {
+ ldb_oom(module->ldb);
return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ if (ac->remove_guid) {
+ if (!add_attrs(ac, &new_attrs, "objectGUID"))
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ if (ac->remove_sid) {
+ if (!add_attrs(ac, &new_attrs, "objectSID"))
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+ ac->cast_attrs = (const char * const *)new_attrs;
+ } else {
+ ac->cast_attrs = req->op.search.attrs;
}
- cast_attrs = (const char * const *)new_attrs;
- } else {
- cast_attrs = req->op.search.attrs;
}
}
+ if (base_dn) {
+ ret = ldb_build_search_req(&down_req,
+ module->ldb, ac,
+ base_dn,
+ base_dn_scope,
+ base_dn_filter,
+ base_dn_attrs,
+ NULL,
+ ac, extended_base_callback,
+ req);
+ if (ret != LDB_SUCCESS) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
+
+ /* perform the search */
+ return ldb_next_request(module, down_req);
+ }
+
ret = ldb_build_search_req_ex(&down_req,
module->ldb, ac,
req->op.search.base,
req->op.search.scope,
req->op.search.tree,
- cast_attrs,
+ ac->cast_attrs,
req->controls,
ac, extended_callback,
req);
@@ -332,11 +641,13 @@ static int extended_search(struct ldb_module *module, struct ldb_request *req)
return LDB_ERR_OPERATIONS_ERROR;
}
- /* save it locally and remove it from the list */
- /* we do not need to replace them later as we
- * are keeping the original req intact */
- if (!save_controls(control, down_req, &saved_controls)) {
- return LDB_ERR_OPERATIONS_ERROR;
+ if (ac->control) {
+ /* save it locally and remove it from the list */
+ /* we do not need to replace them later as we
+ * are keeping the original req intact */
+ if (!save_controls(control, down_req, &saved_controls)) {
+ return LDB_ERR_OPERATIONS_ERROR;
+ }
}
/* perform the search */