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
|
/*
Unix SMB/Netbios implementation.
Version 1.9.
Security context tests
Copyright (C) Tim Potter 2000
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 3 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"
#include "se_access_check_utils.h"
void char_to_sid(DOM_SID *sid, char *sid_str)
{
/* If it looks like a SID, call string_to_sid() else look it up
using wbinfo. */
if (strncmp(sid_str, "S-", 2) == 0) {
string_to_sid(sid, sid_str);
} else {
struct winbindd_request request;
struct winbindd_response response;
/* Send off request */
ZERO_STRUCT(request);
ZERO_STRUCT(response);
fstrcpy(request.data.name, sid_str);
if (winbindd_request(WINBINDD_LOOKUPNAME, &request,
&response) != NSS_STATUS_SUCCESS) {
printf("FAIL: unable to look up sid for name %s\n",
sid_str);
exit(1);
}
string_to_sid(sid, response.data.sid.sid);
printf("converted char %s to sid %s\n", sid_str,
response.data.sid.sid);
}
}
/* Construct an ACL from a list of ace_entry structures */
SEC_ACL *build_acl(struct ace_entry *ace_list)
{
SEC_ACE *aces = NULL;
SEC_ACL *result;
int num_aces = 0;
if (ace_list == NULL) return NULL;
/* Create aces */
while(ace_list->sid) {
SEC_ACCESS sa;
DOM_SID sid;
/* Create memory for new ACE */
if (!(aces = Realloc(aces,
sizeof(SEC_ACE) * (num_aces + 1)))) {
return NULL;
}
/* Create ace */
init_sec_access(&sa, ace_list->mask);
char_to_sid(&sid, ace_list->sid);
init_sec_ace(&aces[num_aces], &sid, ace_list->type,
sa, ace_list->flags);
num_aces++;
ace_list++;
}
/* Create ACL from list of ACEs */
result = make_sec_acl(ACL_REVISION, num_aces, aces);
free(aces);
return result;
}
/* Make a security descriptor */
SEC_DESC *build_sec_desc(struct ace_entry *dacl, struct ace_entry *sacl,
char *owner_sid, char *group_sid)
{
DOM_SID the_owner_sid, the_group_sid;
SEC_ACL *the_dacl, *the_sacl;
SEC_DESC *result;
size_t size;
/* Build up bits of security descriptor */
char_to_sid(&the_owner_sid, owner_sid);
char_to_sid(&the_group_sid, group_sid);
the_dacl = build_acl(dacl);
the_sacl = build_acl(sacl);
result = make_sec_desc(SEC_DESC_REVISION,
SEC_DESC_SELF_RELATIVE | SEC_DESC_DACL_PRESENT,
&the_owner_sid, &the_group_sid,
the_sacl, the_dacl, &size);
free_sec_acl(&the_dacl);
free_sec_acl(&the_sacl);
return result;
}
/* Iterate over password database and call a user-specified function */
void visit_pwdb(BOOL (*fn)(struct passwd *pw, int ngroups, gid_t *groups))
{
struct passwd *pw;
int ngroups;
gid_t *groups;
setpwent();
while ((pw = getpwent())) {
BOOL result;
/* Get grouplist */
ngroups = getgroups(0, NULL);
groups = malloc(sizeof(gid_t) * ngroups);
getgroups(ngroups, groups);
/* Call function */
result = fn(pw, ngroups, groups);
if (!result) break;
/* Clean up */
free(groups);
}
endpwent();
}
|
