source: trunk-3.0/source/nsswitch/idmap_nss.c@ 102

Last change on this file since 102 was 44, checked in by Paul Smedley, 18 years ago

Update source to 3.0.25b
File size: 5.0 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 2 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, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23#include "includes.h"
24#include "winbindd.h"
25
26#undef DBGC_CLASS
27#define DBGC_CLASS DBGC_IDMAP
28
29/*****************************
30 Initialise idmap database.
31*****************************/
32
33static NTSTATUS idmap_nss_int_init(struct idmap_domain *dom)
34{
35 dom->initialized = True;
36 return NT_STATUS_OK;
37}
38
39/**********************************
40 lookup a set of unix ids.
41**********************************/
42
43static NTSTATUS idmap_nss_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
44{
45 TALLOC_CTX *ctx;
46 int i;
47
48 if (! dom->initialized) {
49 return NT_STATUS_UNSUCCESSFUL;
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 winbind_on();
92 /* Lookup name from PDC using lsa_lookup_names() */
93 ret = winbind_lookup_name(dom->name, name, ids[i]->sid, &type);
94 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 if (! dom->initialized) {
139 return NT_STATUS_UNSUCCESSFUL;
140 }
141
142 ctx = talloc_new(dom);
143 if ( ! ctx) {
144 DEBUG(0, ("Out of memory!\n"));
145 return NT_STATUS_NO_MEMORY;
146 }
147
148 for (i = 0; ids[i]; i++) {
149 struct passwd *pw;
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 winbind_on();
159 ret = winbind_lookup_sid(ctx, ids[i]->sid, &dom_name, &name, &type);
160 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
172 /* this will find also all lower case name and use username level */
173
174 pw = Get_Pwnam(name);
175 if (pw) {
176 ids[i]->xid.id = pw->pw_uid;
177 ids[i]->xid.type = ID_TYPE_UID;
178 ids[i]->status = ID_MAPPED;
179 }
180 break;
181
182 case SID_NAME_DOM_GRP:
183 case SID_NAME_ALIAS:
184 case SID_NAME_WKN_GRP:
185
186 gr = getgrnam(name);
187 if (gr) {
188 ids[i]->xid.id = gr->gr_gid;
189 ids[i]->xid.type = ID_TYPE_GID;
190 ids[i]->status = ID_MAPPED;
191 }
192 break;
193
194 default:
195 ids[i]->status = ID_UNKNOWN;
196 break;
197 }
198 }
199
200 talloc_free(ctx);
201 return NT_STATUS_OK;
202}
203
204/**********************************
205 Close the idmap tdb instance
206**********************************/
207
208static NTSTATUS idmap_nss_close(struct idmap_domain *dom)
209{
210 return NT_STATUS_OK;
211}
212
213static struct idmap_methods nss_methods = {
214
215 .init = idmap_nss_int_init,
216 .unixids_to_sids = idmap_nss_unixids_to_sids,
217 .sids_to_unixids = idmap_nss_sids_to_unixids,
218 .close_fn = idmap_nss_close
219};
220
221NTSTATUS idmap_nss_init(void)
222{
223 return smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION, "nss", &nss_methods);
224}
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