s3-winbindd: libwbclient: implement secure channel verification for specific domains...
[ira/wip.git] / source3 / winbindd / winbindd_getgrnam.c
1 /*
2    Unix SMB/CIFS implementation.
3    async implementation of WINBINDD_GETGRNAM
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
23 struct winbindd_getgrnam_state {
24         struct tevent_context *ev;
25         fstring name_domain, name_group;
26         struct dom_sid sid;
27         const char *domname;
28         const char *name;
29         gid_t gid;
30         struct talloc_dict *members;
31 };
32
33 static void winbindd_getgrnam_lookupsid_done(struct tevent_req *subreq);
34 static void winbindd_getgrnam_done(struct tevent_req *subreq);
35
36 struct tevent_req *winbindd_getgrnam_send(TALLOC_CTX *mem_ctx,
37                                           struct tevent_context *ev,
38                                           struct winbindd_cli_state *cli,
39                                           struct winbindd_request *request)
40 {
41         struct tevent_req *req, *subreq;
42         struct winbindd_getgrnam_state *state;
43         struct winbindd_domain *domain;
44         char *tmp;
45         NTSTATUS nt_status;
46
47         req = tevent_req_create(mem_ctx, &state,
48                                 struct winbindd_getgrnam_state);
49         if (req == NULL) {
50                 return NULL;
51         }
52         state->ev = ev;
53
54         /* Ensure null termination */
55         request->data.groupname[sizeof(request->data.groupname)-1]='\0';
56
57         DEBUG(3, ("getgrnam %s\n", request->data.groupname));
58
59         nt_status = normalize_name_unmap(state, request->data.groupname, &tmp);
60         /* If we didn't map anything in the above call, just reset the
61            tmp pointer to the original string */
62         if (!NT_STATUS_IS_OK(nt_status) &&
63             !NT_STATUS_EQUAL(nt_status, NT_STATUS_FILE_RENAMED))
64         {
65                 tmp = request->data.groupname;
66         }
67
68         /* Parse domain and groupname */
69
70         parse_domain_user(tmp, state->name_domain, state->name_group);
71
72         /* if no domain or our local domain and no local tdb group, default to
73          * our local domain for aliases */
74
75         if ( !*(state->name_domain) || strequal(state->name_domain,
76                                                 get_global_sam_name()) ) {
77                 fstrcpy(state->name_domain, get_global_sam_name());
78         }
79
80         /* Get info for the domain */
81
82         domain = find_domain_from_name_noinit(state->name_domain);
83         if (domain == NULL) {
84                 DEBUG(3, ("could not get domain sid for domain %s\n",
85                           state->name_domain));
86                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
87                 return tevent_req_post(req, ev);
88         }
89
90         /* should we deal with users for our domain? */
91
92         if ( lp_winbind_trusted_domains_only() && domain->primary) {
93                 DEBUG(7,("winbindd_getgrnam: My domain -- rejecting "
94                          "getgrnam() for %s\\%s.\n", state->name_domain,
95                          state->name_group));
96                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
97                 return tevent_req_post(req, ev);
98         }
99
100         subreq = wb_lookupname_send(state, ev, domain->name, state->name_group,
101                                     0);
102         if (tevent_req_nomem(subreq, req)) {
103                 return tevent_req_post(req, ev);
104         }
105         tevent_req_set_callback(subreq, winbindd_getgrnam_lookupsid_done,
106                                 req);
107         return req;
108 }
109
110 static void winbindd_getgrnam_lookupsid_done(struct tevent_req *subreq)
111 {
112         struct tevent_req *req = tevent_req_callback_data(
113                 subreq, struct tevent_req);
114         struct winbindd_getgrnam_state *state = tevent_req_data(
115                 req, struct winbindd_getgrnam_state);
116         enum lsa_SidType type;
117         NTSTATUS status;
118
119         status = wb_lookupname_recv(subreq, &state->sid, &type);
120         TALLOC_FREE(subreq);
121         if (!NT_STATUS_IS_OK(status)) {
122                 tevent_req_nterror(req, status);
123                 return;
124         }
125
126         if ( (type != SID_NAME_DOM_GRP) && (type != SID_NAME_ALIAS) ) {
127                 DEBUG(5,("getgrnam_recv: not a group!\n"));
128                 tevent_req_nterror(req, NT_STATUS_NO_SUCH_GROUP);
129                 return;
130         }
131
132         subreq = wb_getgrsid_send(state, state->ev, &state->sid,
133                                   lp_winbind_expand_groups());
134         if (tevent_req_nomem(subreq, req)) {
135                 return;
136         }
137         tevent_req_set_callback(subreq, winbindd_getgrnam_done, req);
138 }
139
140 static void winbindd_getgrnam_done(struct tevent_req *subreq)
141 {
142         struct tevent_req *req = tevent_req_callback_data(
143                 subreq, struct tevent_req);
144         struct winbindd_getgrnam_state *state = tevent_req_data(
145                 req, struct winbindd_getgrnam_state);
146         NTSTATUS status;
147
148         status = wb_getgrsid_recv(subreq, state, &state->domname, &state->name,
149                                   &state->gid, &state->members);
150         TALLOC_FREE(subreq);
151         if (!NT_STATUS_IS_OK(status)) {
152                 tevent_req_nterror(req, status);
153                 return;
154         }
155         tevent_req_done(req);
156 }
157
158 NTSTATUS winbindd_getgrnam_recv(struct tevent_req *req,
159                                 struct winbindd_response *response)
160 {
161         struct winbindd_getgrnam_state *state = tevent_req_data(
162                 req, struct winbindd_getgrnam_state);
163         NTSTATUS status;
164         int num_members;
165         char *buf;
166
167         if (tevent_req_is_nterror(req, &status)) {
168                 DEBUG(5, ("Could not convert sid %s: %s\n",
169                           sid_string_dbg(&state->sid), nt_errstr(status)));
170                 return status;
171         }
172
173         if (!fill_grent(talloc_tos(), &response->data.gr, state->domname,
174                         state->name, state->gid)) {
175                 DEBUG(5, ("fill_grent failed\n"));
176                 return NT_STATUS_NO_MEMORY;
177         }
178
179         status = winbindd_print_groupmembers(state->members, response,
180                                              &num_members, &buf);
181         if (!NT_STATUS_IS_OK(status)) {
182                 return status;
183         }
184
185         response->data.gr.num_gr_mem = (uint32)num_members;
186
187         /* Group membership lives at start of extra data */
188
189         response->data.gr.gr_mem_ofs = 0;
190         response->extra_data.data = buf;
191         response->length += talloc_get_size(response->extra_data.data);
192
193         return NT_STATUS_OK;
194 }