source: vendor/3.5.4/source3/winbindd/idmap_nss.c

Last change on this file was 414, checked in by Herwig Bauernfeind, 16 years ago

Samba 3.5.0: Initial import
File size: 4.9 KB
Line 
1/*
2 Unix SMB/CIFS implementation.
3
4 idmap PASSDB backend
5
6 Copyright (C) Simo Sorce 2006
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20*/
21
22#include "includes.h"
23#include "winbindd.h"
24
25#undef DBGC_CLASS
26#define DBGC_CLASS DBGC_IDMAP
27
28/*****************************
29 Initialise idmap database.
30*****************************/
31
32static NTSTATUS idmap_nss_int_init(struct idmap_domain *dom,
33 const char *params)
34{
35 return NT_STATUS_OK;
36}
37
38/**********************************
39 lookup a set of unix ids.
40**********************************/
41
42static NTSTATUS idmap_nss_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
43{
44 TALLOC_CTX *ctx;
45 int i;
46
47 /* initialize the status to avoid suprise */
48 for (i = 0; ids[i]; i++) {
49 ids[i]->status = ID_UNKNOWN;
50 }
51
52 ctx = talloc_new(dom);
53 if ( ! ctx) {
54 DEBUG(0, ("Out of memory!\n"));
55 return NT_STATUS_NO_MEMORY;
56 }
57
58 for (i = 0; ids[i]; i++) {
59 struct passwd *pw;
60 struct group *gr;
61 const char *name;
62 enum lsa_SidType type;
63 bool ret;
64
65 switch (ids[i]->xid.type) {
66 case ID_TYPE_UID:
67 pw = getpwuid((uid_t)ids[i]->xid.id);
68
69 if (!pw) {
70 ids[i]->status = ID_UNMAPPED;
71 continue;
72 }
73 name = pw->pw_name;
74 break;
75 case ID_TYPE_GID:
76 gr = getgrgid((gid_t)ids[i]->xid.id);
77
78 if (!gr) {
79 ids[i]->status = ID_UNMAPPED;
80 continue;
81 }
82 name = gr->gr_name;
83 break;
84 default: /* ?? */
85 ids[i]->status = ID_UNKNOWN;
86 continue;
87 }
88
89 /* by default calls to winbindd are disabled
90 the following call will not recurse so this is safe */
91 (void)winbind_on();
92 /* Lookup name from PDC using lsa_lookup_names() */
93 ret = winbind_lookup_name(dom->name, name, ids[i]->sid, &type);
94 (void)winbind_off();
95
96 if (!ret) {
97 /* TODO: how do we know if the name is really not mapped,
98 * or something just failed ? */
99 ids[i]->status = ID_UNMAPPED;
100 continue;
101 }
102
103 switch (type) {
104 case SID_NAME_USER:
105 if (ids[i]->xid.type == ID_TYPE_UID) {
106 ids[i]->status = ID_MAPPED;
107 }
108 break;
109
110 case SID_NAME_DOM_GRP:
111 case SID_NAME_ALIAS:
112 case SID_NAME_WKN_GRP:
113 if (ids[i]->xid.type == ID_TYPE_GID) {
114 ids[i]->status = ID_MAPPED;
115 }
116 break;
117
118 default:
119 ids[i]->status = ID_UNKNOWN;
120 break;
121 }
122 }
123
124
125 talloc_free(ctx);
126 return NT_STATUS_OK;
127}
128
129/**********************************
130 lookup a set of sids.
131**********************************/
132
133static NTSTATUS idmap_nss_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
134{
135 TALLOC_CTX *ctx;
136 int i;
137
138 /* initialize the status to avoid suprise */
139 for (i = 0; ids[i]; i++) {
140 ids[i]->status = ID_UNKNOWN;
141 }
142
143 ctx = talloc_new(dom);
144 if ( ! ctx) {
145 DEBUG(0, ("Out of memory!\n"));
146 return NT_STATUS_NO_MEMORY;
147 }
148
149 for (i = 0; ids[i]; i++) {
150 struct group *gr;
151 enum lsa_SidType type;
152 const char *dom_name = NULL;
153 const char *name = NULL;
154 bool ret;
155
156 /* by default calls to winbindd are disabled
157 the following call will not recurse so this is safe */
158 (void)winbind_on();
159 ret = winbind_lookup_sid(ctx, ids[i]->sid, &dom_name, &name, &type);
160 (void)winbind_off();
161
162 if (!ret) {
163 /* TODO: how do we know if the name is really not mapped,
164 * or something just failed ? */
165 ids[i]->status = ID_UNMAPPED;
166 continue;
167 }
168
169 switch (type) {
170 case SID_NAME_USER: {
171 struct passwd *pw;
172
173 /* this will find also all lower case name and use username level */
174
175 pw = Get_Pwnam_alloc(talloc_tos(), name);
176 if (pw) {
177 ids[i]->xid.id = pw->pw_uid;
178 ids[i]->xid.type = ID_TYPE_UID;
179 ids[i]->status = ID_MAPPED;
180 }
181 TALLOC_FREE(pw);
182 break;
183 }
184
185 case SID_NAME_DOM_GRP:
186 case SID_NAME_ALIAS:
187 case SID_NAME_WKN_GRP:
188
189 gr = getgrnam(name);
190 if (gr) {
191 ids[i]->xid.id = gr->gr_gid;
192 ids[i]->xid.type = ID_TYPE_GID;
193 ids[i]->status = ID_MAPPED;
194 }
195 break;
196
197 default:
198 ids[i]->status = ID_UNKNOWN;
199 break;
200 }
201 }
202
203 talloc_free(ctx);
204 return NT_STATUS_OK;
205}
206
207/**********************************
208 Close the idmap tdb instance
209**********************************/
210
211static NTSTATUS idmap_nss_close(struct idmap_domain *dom)
212{
213 return NT_STATUS_OK;
214}
215
216static struct idmap_methods nss_methods = {
217
218 .init = idmap_nss_int_init,
219 .unixids_to_sids = idmap_nss_unixids_to_sids,
220 .sids_to_unixids = idmap_nss_sids_to_unixids,
221 .close_fn = idmap_nss_close
222};
223
224NTSTATUS idmap_nss_init(void)
225{
226 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "nss", &nss_methods);
227}
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