s3: Remove some pointless uses of string_sid_talloc
[ira/wip.git] / source3 / winbindd / wb_dsgetdcname.c
1 /*
2    Unix SMB/CIFS implementation.
3    async dsgetdcname
4    Copyright (C) Volker Lendecke 2009
5
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.
10
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.
15
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/>.
18 */
19
20 #include "includes.h"
21 #include "winbindd.h"
22 #include "librpc/gen_ndr/cli_wbint.h"
23
24 struct wb_dsgetdcname_state {
25         struct netr_DsRGetDCNameInfo *dcinfo;
26 };
27
28 static void wb_dsgetdcname_done(struct tevent_req *subreq);
29
30 struct tevent_req *wb_dsgetdcname_send(TALLOC_CTX *mem_ctx,
31                                        struct tevent_context *ev,
32                                        const char *domain_name,
33                                        const struct GUID *domain_guid,
34                                        const char *site_name,
35                                        uint32_t flags)
36 {
37         struct tevent_req *req, *subreq;
38         struct wb_dsgetdcname_state *state;
39         struct winbindd_child *child;
40         struct GUID guid;
41         struct GUID *guid_ptr = NULL;
42
43         req = tevent_req_create(mem_ctx, &state, struct wb_dsgetdcname_state);
44         if (req == NULL) {
45                 return NULL;
46         }
47
48         if (strequal(domain_name, "BUILTIN")
49             || strequal(domain_name, get_global_sam_name())) {
50                 /*
51                  * Two options here: Give back our own address, or say there's
52                  * nobody around. Right now opting for the latter, one measure
53                  * to prevent the loopback connects. This might change if
54                  * needed.
55                  */
56                 tevent_req_nterror(req, NT_STATUS_DOMAIN_CONTROLLER_NOT_FOUND);
57                 return tevent_req_post(req, ev);
58         }
59
60         if (IS_DC) {
61                 /*
62                  * We have to figure out the DC ourselves
63                  */
64                 child = locator_child();
65         } else {
66                 struct winbindd_domain *domain = find_our_domain();
67                 child = &domain->child;
68         }
69
70         if (domain_guid != NULL) {
71                 /* work around a const issue in rpccli_ autogenerated code */
72                 guid = *domain_guid;
73                 guid_ptr = &guid;
74         }
75
76         subreq = rpccli_wbint_DsGetDcName_send(
77                 state, ev, child->rpccli, domain_name, guid_ptr, site_name,
78                 flags, &state->dcinfo);
79         if (tevent_req_nomem(subreq, req)) {
80                 return tevent_req_post(req, ev);
81         }
82         tevent_req_set_callback(subreq, wb_dsgetdcname_done, req);
83         return req;
84 }
85
86 static void wb_dsgetdcname_done(struct tevent_req *subreq)
87 {
88         struct tevent_req *req = tevent_req_callback_data(
89                 subreq, struct tevent_req);
90         struct wb_dsgetdcname_state *state = tevent_req_data(
91                 req, struct wb_dsgetdcname_state);
92         NTSTATUS status, result;
93
94         status = rpccli_wbint_DsGetDcName_recv(subreq, state, &result);
95         TALLOC_FREE(subreq);
96         if (!NT_STATUS_IS_OK(status)) {
97                 tevent_req_nterror(req, status);
98                 return;
99         }
100         tevent_req_done(req);
101 }
102
103 NTSTATUS wb_dsgetdcname_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
104                              struct netr_DsRGetDCNameInfo **pdcinfo)
105 {
106         struct wb_dsgetdcname_state *state = tevent_req_data(
107                 req, struct wb_dsgetdcname_state);
108         NTSTATUS status;
109
110         if (tevent_req_is_nterror(req, &status)) {
111                 return status;
112         }
113         *pdcinfo = talloc_move(mem_ctx, &state->dcinfo);
114         return NT_STATUS_OK;
115 }