1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
Unix SMB/CIFS implementation.
ID Mapping
Copyright (C) Simo Sorce 2003
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.*/
#include "includes.h"
#undef DBGC_CLASS
#define DBGC_CLASS DBGC_IDMAP
/*****************************************************************
*THE CANONICAL* convert uid_t to SID function.
Tries winbind first - then uses local lookup.
Returns SID pointer.
*****************************************************************/
DOM_SID *uid_to_sid(DOM_SID *psid, uid_t uid)
{
unid_t id;
DEBUG(10,("uid_to_sid: uid = [%d]\n", uid));
id.uid = uid;
if (NT_STATUS_IS_OK(idmap_get_sid_from_id(psid, id, ID_USERID))) {
DEBUG(10, ("uid_to_sid: sid = [%s]\n", sid_string_static(psid)));
return psid;
}
/* If mapping is not found in idmap try with traditional method,
then stores the result in idmap.
We may add a switch in future to allow smooth migrations to
idmap-only db ---Simo */
sid_copy(psid, get_global_sam_sid());
sid_append_rid(psid, fallback_pdb_uid_to_user_rid(uid));
DEBUG(10,("uid_to_sid: algorithmic %u -> %s\n", (unsigned int)uid, sid_string_static(psid)));
return psid;
}
/*****************************************************************
*THE CANONICAL* convert gid_t to SID function.
Tries winbind first - then uses local lookup.
Returns SID pointer.
*****************************************************************/
DOM_SID *gid_to_sid(DOM_SID *psid, gid_t gid)
{
GROUP_MAP map;
unid_t id;
DEBUG(10,("gid_to_sid: gid = [%d]\n", gid));
id.gid = gid;
if (NT_STATUS_IS_OK(idmap_get_sid_from_id(psid, id, ID_GROUPID))) {
DEBUG(10, ("gid_to_sid: sid = [%s]\n", sid_string_static(psid)));
return psid;
}
/* If mapping is not found in idmap try with traditional method,
then stores the result in idmap.
We may add a switch in future to allow smooth migrations to
idmap-only db ---Simo */
if (pdb_getgrgid(&map, gid, MAPPING_WITHOUT_PRIV)) {
sid_copy(psid, &map.sid);
} else {
sid_copy(psid, get_global_sam_sid());
sid_append_rid(psid, pdb_gid_to_group_rid(gid));
}
DEBUG(10,("gid_to_sid: algorithmic %u -> %s\n", (unsigned int)gid, sid_string_static(psid)));
return psid;
}
/*****************************************************************
*THE CANONICAL* convert SID to uid function.
Tries winbind first - then uses local lookup.
Returns True if this name is a user sid and the conversion
was done correctly, False if not. sidtype is set by this function.
*****************************************************************/
BOOL sid_to_uid(const DOM_SID *psid, uid_t *puid)
{
unid_t id;
int type;
DEBUG(10,("sid_to_uid: sid = [%s]\n", sid_string_static(psid)));
type = ID_USERID;
if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&id, &type, psid))) {
DEBUG(10,("sid_to_uid: uid = [%d]\n", id.uid));
*puid = id.uid;
return True;
}
if (sid_compare_domain(get_global_sam_sid(), psid) == 0) {
BOOL result;
uint32 rid;
DEBUG(10,("sid_to_uid: sid is local [%s]\n", sid_string_static(get_global_sam_sid())));
if (!sid_peek_rid(psid, &rid)) {
DEBUG(0, ("sid_to_uid: Error extracting RID from SID\n!"));
return False;
}
if (!fallback_pdb_rid_is_user(rid)) {
DEBUG(3, ("sid_to_uid: RID %u is *NOT* a user\n", (unsigned)rid));
return False;
}
*puid = fallback_pdb_user_rid_to_uid(rid);
return True;
}
return False;
}
/*****************************************************************
*THE CANONICAL* convert SID to gid function.
Tries winbind first - then uses local lookup.
Returns True if this name is a user sid and the conversion
was done correctly, False if not.
*****************************************************************/
BOOL sid_to_gid(const DOM_SID *psid, gid_t *pgid)
{
unid_t id;
int type;
DEBUG(10,("sid_to_gid: sid = [%s]\n", sid_string_static(psid)));
type = ID_GROUPID;
if (NT_STATUS_IS_OK(idmap_get_id_from_sid(&id, &type, psid))) {
DEBUG(10,("sid_to_gid: gid = [%d]\n", id.gid));
*pgid = id.gid;
return True;
}
if (sid_compare_domain(get_global_sam_sid(), psid) == 0) {
GROUP_MAP map;
BOOL result;
if (pdb_getgrsid(&map, *psid, MAPPING_WITHOUT_PRIV)) {
/* the SID is in the mapping table but not mapped */
if (map.gid==(gid_t)-1)
return False;
*pgid = map.gid;
return True;
} else {
uint32 rid;
if (!sid_peek_rid(psid, &rid)) {
DEBUG(0, ("sid_to_gid: Error extracting RID from SID\n!"));
return False;
}
if (fallback_pdb_rid_is_user(rid)) {
DEBUG(3, ("sid_to_gid: RID %u is *NOT* a group\n", (unsigned)rid));
return False;
}
*pgid = pdb_group_rid_to_gid(rid);
}
}
return False;
}
|
