source: vendor/3.5.0/source3/winbindd/winbindd_getgrent.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 15 years ago

Samba 3.5.0: Initial import
File size: 5.6 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3 async implementation of WINBINDD_GETGRENT
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
23struct winbindd_getgrent_state {
24 struct tevent_context *ev;
25 struct winbindd_cli_state *cli;
26 int max_groups;
27 int num_groups;
28 struct winbindd_gr *groups;
29 struct talloc_dict **members;
30};
31
32static void winbindd_getgrent_done(struct tevent_req *subreq);
33
34struct tevent_req *winbindd_getgrent_send(TALLOC_CTX *mem_ctx,
35 struct tevent_context *ev,
36 struct winbindd_cli_state *cli,
37 struct winbindd_request *request)
38{
39 struct tevent_req *req, *subreq;
40 struct winbindd_getgrent_state *state;
41
42 req = tevent_req_create(mem_ctx, &state,
43 struct winbindd_getgrent_state);
44 if (req == NULL) {
45 return NULL;
46 }
47 state->ev = ev;
48 state->num_groups = 0;
49 state->cli = cli;
50
51 DEBUG(3, ("[%5lu]: getgrent\n", (unsigned long)cli->pid));
52
53 if (!lp_winbind_enum_groups()) {
54 tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
55 return tevent_req_post(req, ev);
56 }
57
58 if (cli->grent_state == NULL) {
59 tevent_req_nterror(req, NT_STATUS_NO_MORE_ENTRIES);
60 return tevent_req_post(req, ev);
61 }
62
63 state->max_groups = MIN(500, request->data.num_entries);
64 if (state->max_groups == 0) {
65 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
66 return tevent_req_post(req, ev);
67 }
68
69 state->groups = talloc_zero_array(state, struct winbindd_gr,
70 state->max_groups);
71 if (tevent_req_nomem(state->groups, req)) {
72 return tevent_req_post(req, ev);
73 }
74
75 state->members = talloc_array(state, struct talloc_dict *,
76 state->max_groups);
77 if (tevent_req_nomem(state->members, req)) {
78 TALLOC_FREE(state->groups);
79 return tevent_req_post(req, ev);
80 }
81
82 subreq = wb_next_grent_send(state, ev, lp_winbind_expand_groups(),
83 cli->grent_state,
84 &state->groups[state->num_groups]);
85 if (tevent_req_nomem(subreq, req)) {
86 return tevent_req_post(req, ev);
87 }
88 tevent_req_set_callback(subreq, winbindd_getgrent_done, req);
89 return req;
90}
91
92static void winbindd_getgrent_done(struct tevent_req *subreq)
93{
94 struct tevent_req *req = tevent_req_callback_data(
95 subreq, struct tevent_req);
96 struct winbindd_getgrent_state *state = tevent_req_data(
97 req, struct winbindd_getgrent_state);
98 NTSTATUS status;
99
100 status = wb_next_grent_recv(subreq, state,
101 &state->members[state->num_groups]);
102 TALLOC_FREE(subreq);
103 if (NT_STATUS_EQUAL(status, NT_STATUS_NO_MORE_ENTRIES)) {
104 DEBUG(10, ("winbindd_getgrent_done: done with %d groups\n",
105 (int)state->num_groups));
106 TALLOC_FREE(state->cli->grent_state);
107 tevent_req_done(req);
108 return;
109 }
110 if (!NT_STATUS_IS_OK(status)) {
111 tevent_req_nterror(req, status);
112 return;
113 }
114 state->num_groups += 1;
115 if (state->num_groups >= state->max_groups) {
116 DEBUG(10, ("winbindd_getgrent_done: Got enough groups: %d\n",
117 (int)state->num_groups));
118 tevent_req_done(req);
119 return;
120 }
121 if (state->cli->grent_state == NULL) {
122 DEBUG(10, ("winbindd_getgrent_done: endgrent called in "
123 "between\n"));
124 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
125 return;
126 }
127 subreq = wb_next_grent_send(state, state->ev,
128 lp_winbind_expand_groups(),
129 state->cli->grent_state,
130 &state->groups[state->num_groups]);
131 if (tevent_req_nomem(subreq, req)) {
132 return;
133 }
134 tevent_req_set_callback(subreq, winbindd_getgrent_done, req);
135}
136
137NTSTATUS winbindd_getgrent_recv(struct tevent_req *req,
138 struct winbindd_response *response)
139{
140 struct winbindd_getgrent_state *state = tevent_req_data(
141 req, struct winbindd_getgrent_state);
142 NTSTATUS status;
143 char **memberstrings;
144 char *result;
145 size_t base_memberofs, total_memberlen;
146 int i;
147
148 if (tevent_req_is_nterror(req, &status)) {
149 DEBUG(5, ("getgrent failed: %s\n", nt_errstr(status)));
150 return status;
151 }
152
153 if (state->num_groups == 0) {
154 return NT_STATUS_NO_MORE_ENTRIES;
155 }
156
157 memberstrings = talloc_array(talloc_tos(), char *, state->num_groups);
158 if (memberstrings == NULL) {
159 return NT_STATUS_NO_MEMORY;
160 }
161
162 total_memberlen = 0;
163
164 for (i=0; i<state->num_groups; i++) {
165 int num_members;
166
167 status = winbindd_print_groupmembers(
168 state->members[i], memberstrings, &num_members,
169 &memberstrings[i]);
170
171 if (!NT_STATUS_IS_OK(status)) {
172 TALLOC_FREE(memberstrings);
173 return status;
174 }
175 TALLOC_FREE(state->members[i]);
176
177 state->groups[i].num_gr_mem = num_members;
178 state->groups[i].gr_mem_ofs = total_memberlen;
179
180 total_memberlen += talloc_get_size(memberstrings[i]);
181 }
182
183 base_memberofs = state->num_groups * sizeof(struct winbindd_gr);
184
185 result = talloc_realloc(state, state->groups, char,
186 base_memberofs + total_memberlen);
187 if (result == NULL) {
188 return NT_STATUS_NO_MEMORY;
189 }
190
191 for (i=0; i<state->num_groups; i++) {
192 memcpy(result + base_memberofs + state->groups[i].gr_mem_ofs,
193 memberstrings[i], talloc_get_size(memberstrings[i]));
194 TALLOC_FREE(memberstrings[i]);
195 }
196
197 TALLOC_FREE(memberstrings);
198
199 response->data.num_entries = state->num_groups;
200 response->length += talloc_get_size(result);
201 response->extra_data.data = talloc_move(response, &result);
202 return NT_STATUS_OK;
203}
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