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
|
/*
Unix SMB/CIFS implementation.
Deal with unix elements in the security token
Copyright (C) Andrew Tridgell 2004
Copyright (C) Andrew Bartlett 2011
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, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
#include "auth/auth.h"
#include "libcli/wbclient/wbclient.h"
#include "param/param.h"
/*
form a security_unix_token from the current security_token
*/
NTSTATUS security_token_to_unix_token(TALLOC_CTX *mem_ctx,
struct wbc_context *wbc_ctx,
struct security_token *token,
struct security_unix_token **sec)
{
uint32_t s, g;
NTSTATUS status;
struct id_map *ids;
struct composite_context *ctx;
/* we can't do unix security without a user and group */
if (token->num_sids < 2) {
return NT_STATUS_ACCESS_DENIED;
}
*sec = talloc_zero(mem_ctx, struct security_unix_token);
if (*sec == NULL) {
return NT_STATUS_NO_MEMORY;
}
ids = talloc_zero_array(mem_ctx, struct id_map, token->num_sids);
NT_STATUS_HAVE_NO_MEMORY(ids);
for (s=0; s < token->num_sids; s++) {
ids[s].sid = &token->sids[s];
ids[s].status = ID_UNKNOWN;
}
ctx = wbc_sids_to_xids_send(wbc_ctx, ids, token->num_sids, ids);
NT_STATUS_HAVE_NO_MEMORY(ctx);
status = wbc_sids_to_xids_recv(ctx, &ids);
NT_STATUS_NOT_OK_RETURN(status);
g = token->num_sids;
if (ids[0].xid.type != ID_TYPE_BOTH) {
g--;
}
(*sec)->ngroups = g;
(*sec)->groups = talloc_array(*sec, gid_t, (*sec)->ngroups);
NT_STATUS_HAVE_NO_MEMORY((*sec)->groups);
g=0;
if (ids[0].xid.type == ID_TYPE_BOTH) {
(*sec)->uid = ids[0].xid.id;
(*sec)->groups[g] = ids[0].xid.id;
g++;
} else if (ids[0].xid.type == ID_TYPE_UID) {
(*sec)->uid = ids[0].xid.id;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[0].sid);
DEBUG(0, ("Unable to convert first SID (%s) in user token to a UID. Conversion was returned as type %d, full token:\n",
sid_str, (int)ids[0].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
if (ids[1].xid.type == ID_TYPE_BOTH ||
ids[1].xid.type == ID_TYPE_GID) {
(*sec)->gid = ids[1].xid.id;
(*sec)->groups[g] = ids[1].xid.id;
g++;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[1].sid);
DEBUG(0, ("Unable to convert second SID (%s) in user token to a GID. Conversion was returned as type %d, full token:\n",
sid_str, (int)ids[1].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
for (s=2; s < token->num_sids; s++) {
if (ids[s].xid.type == ID_TYPE_BOTH ||
ids[s].xid.type == ID_TYPE_GID) {
(*sec)->groups[g] = ids[s].xid.id;
g++;
} else {
char *sid_str = dom_sid_string(mem_ctx, ids[s].sid);
DEBUG(0, ("Unable to convert SID (%s) at index %u in user token to a GID. Conversion was returned as type %d, full token:\n",
sid_str, (unsigned int)s, (int)ids[s].xid.type));
security_token_debug(0, 0, token);
talloc_free(sid_str);
return NT_STATUS_INVALID_SID;
}
}
DEBUG(5, ("Successfully converted security token to a unix token:"));
security_token_debug(0, 5, token);
TALLOC_FREE(ids);
return NT_STATUS_OK;
}
/*
Fill in the auth_user_info_unix and auth_unix_token elements in a struct session_info
*/
NTSTATUS auth_session_info_fill_unix(struct wbc_context *wbc_ctx,
struct loadparm_context *lp_ctx,
const char *original_user_name,
struct auth_session_info *session_info)
{
char *su;
size_t len;
NTSTATUS status = security_token_to_unix_token(session_info, wbc_ctx,
session_info->security_token,
&session_info->unix_token);
if (!NT_STATUS_IS_OK(status)) {
return status;
}
session_info->unix_info = talloc_zero(session_info, struct auth_user_info_unix);
NT_STATUS_HAVE_NO_MEMORY(session_info->unix_info);
session_info->unix_info->unix_name = talloc_asprintf(session_info->unix_info,
"%s%s%s", session_info->info->domain_name,
lpcfg_winbind_separator(lp_ctx),
session_info->info->account_name);
NT_STATUS_HAVE_NO_MEMORY(session_info->unix_info->unix_name);
len = strlen(original_user_name) + 1;
session_info->unix_info->sanitized_username = su = talloc_array(session_info->unix_info, char, len);
NT_STATUS_HAVE_NO_MEMORY(su);
alpha_strcpy(su, original_user_name,
". _-$", len);
return NT_STATUS_OK;
}
|
