2 Unix SMB/CIFS implementation.
4 Copyright (C) Volker Lendecke 2009
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
22 #include "librpc/gen_ndr/ndr_winbind_c.h"
23 #include "librpc/gen_ndr/ndr_netlogon.h"
25 struct wb_dsgetdcname_state {
26 struct netr_DsRGetDCNameInfo *dcinfo;
29 static void wb_dsgetdcname_done(struct tevent_req *subreq);
31 struct tevent_req *wb_dsgetdcname_send(TALLOC_CTX *mem_ctx,
32 struct tevent_context *ev,
33 const char *domain_name,
34 const struct GUID *domain_guid,
35 const char *site_name,
38 struct tevent_req *req, *subreq;
39 struct wb_dsgetdcname_state *state;
40 struct winbindd_child *child;
42 struct GUID *guid_ptr = NULL;
44 req = tevent_req_create(mem_ctx, &state, struct wb_dsgetdcname_state);
49 if (strequal(domain_name, "BUILTIN")) {
53 tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
54 return tevent_req_post(req, ev);
57 if (strequal(domain_name, get_global_sam_name())) {
58 int role = lp_server_role();
59 if ( role != ROLE_ACTIVE_DIRECTORY_DC ) {
61 * Two options here: Give back our own address, or say there's
62 * nobody around. Right now opting for the latter, one measure
63 * to prevent the loopback connects. This might change if
66 tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
67 return tevent_req_post(req, ev);
73 * We have to figure out the DC ourselves
75 child = locator_child();
77 struct winbindd_domain *domain = find_our_domain();
78 child = choose_domain_child(domain);
81 if (domain_guid != NULL) {
82 /* work around a const issue in rpccli_ autogenerated code */
87 subreq = dcerpc_wbint_DsGetDcName_send(
88 state, ev, child->binding_handle, domain_name, guid_ptr, site_name,
89 flags, &state->dcinfo);
90 if (tevent_req_nomem(subreq, req)) {
91 return tevent_req_post(req, ev);
93 tevent_req_set_callback(subreq, wb_dsgetdcname_done, req);
97 static void wb_dsgetdcname_done(struct tevent_req *subreq)
99 struct tevent_req *req = tevent_req_callback_data(
100 subreq, struct tevent_req);
101 struct wb_dsgetdcname_state *state = tevent_req_data(
102 req, struct wb_dsgetdcname_state);
103 NTSTATUS status, result;
105 status = dcerpc_wbint_DsGetDcName_recv(subreq, state, &result);
107 if (any_nt_status_not_ok(status, result, &status)) {
108 tevent_req_nterror(req, status);
111 tevent_req_done(req);
114 NTSTATUS wb_dsgetdcname_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
115 struct netr_DsRGetDCNameInfo **pdcinfo)
117 struct wb_dsgetdcname_state *state = tevent_req_data(
118 req, struct wb_dsgetdcname_state);
121 if (tevent_req_is_nterror(req, &status)) {
124 *pdcinfo = talloc_move(mem_ctx, &state->dcinfo);
128 NTSTATUS wb_dsgetdcname_gencache_set(const char *domname,
129 struct netr_DsRGetDCNameInfo *dcinfo)
132 enum ndr_err_code ndr_err;
136 key = talloc_asprintf_strupper_m(talloc_tos(), "DCINFO/%s", domname);
138 return NT_STATUS_NO_MEMORY;
141 if (DEBUGLEVEL >= 10) {
142 NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, dcinfo);
145 ndr_err = ndr_push_struct_blob(
147 (ndr_push_flags_fn_t)ndr_push_netr_DsRGetDCNameInfo);
148 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
149 NTSTATUS status = ndr_map_error2ntstatus(ndr_err);
150 DBG_WARNING("ndr_push_struct_blob failed: %s\n",
151 ndr_errstr(ndr_err));
156 ok = gencache_set_data_blob(key, blob, time(NULL)+3600);
159 DBG_WARNING("gencache_set_data_blob for key %s failed\n", key);
161 return NT_STATUS_UNSUCCESSFUL;
168 struct dcinfo_parser_state {
171 struct netr_DsRGetDCNameInfo *dcinfo;
174 static void dcinfo_parser(time_t timeout, DATA_BLOB blob, void *private_data)
176 struct dcinfo_parser_state *state = private_data;
177 enum ndr_err_code ndr_err;
179 if (timeout <= time(NULL)) {
183 state->dcinfo = talloc(state->mem_ctx, struct netr_DsRGetDCNameInfo);
184 if (state->dcinfo == NULL) {
185 state->status = NT_STATUS_NO_MEMORY;
189 ndr_err = ndr_pull_struct_blob_all(
190 &blob, state->dcinfo, state->dcinfo,
191 (ndr_pull_flags_fn_t)ndr_pull_netr_DsRGetDCNameInfo);
193 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
194 DBG_ERR("ndr_pull_struct_blob failed\n");
195 state->status = ndr_map_error2ntstatus(ndr_err);
199 state->status = NT_STATUS_OK;
202 NTSTATUS wb_dsgetdcname_gencache_get(TALLOC_CTX *mem_ctx,
204 struct netr_DsRGetDCNameInfo **dcinfo)
206 struct dcinfo_parser_state state;
210 key = talloc_asprintf_strupper_m(mem_ctx, "DCINFO/%s", domname);
212 return NT_STATUS_NO_MEMORY;
215 state = (struct dcinfo_parser_state) {
216 .status = NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND,
220 ok = gencache_parse(key, dcinfo_parser, &state);
223 return NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND;
226 if (!NT_STATUS_IS_OK(state.status)) {
230 if (DEBUGLEVEL >= 10) {
231 NDR_PRINT_DEBUG(netr_DsRGetDCNameInfo, state.dcinfo);
234 *dcinfo = state.dcinfo;