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
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
/*
SSSD
Utilities to for tha pam_data structure
Authors:
Sumit Bose <sbose@redhat.com>
Copyright (C) 2009 Red Hat
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 "providers/data_provider.h"
#define PAM_SAFE_ITEM(item) item ? item : "not set"
static const char *pamcmd2str(int cmd) {
switch (cmd) {
case SSS_PAM_AUTHENTICATE:
return "PAM_AUTHENTICATE";
case SSS_PAM_SETCRED:
return "PAM_SETCRED";
case SSS_PAM_ACCT_MGMT:
return "PAM_ACCT_MGMT";
case SSS_PAM_OPEN_SESSION:
return "PAM_OPEN_SESSION";
case SSS_PAM_CLOSE_SESSION:
return "PAM_CLOSE_SESSION";
case SSS_PAM_CHAUTHTOK:
return "PAM_CHAUTHTOK";
case SSS_PAM_CHAUTHTOK_PRELIM:
return "PAM_CHAUTHTOK_PRELIM";
default:
return "UNKNOWN";
}
}
int pam_data_destructor(void *ptr)
{
struct pam_data *pd = talloc_get_type(ptr, struct pam_data);
/* make sure to wipe any password from memory before freeing */
sss_authtok_wipe_password(pd->authtok);
sss_authtok_wipe_password(pd->newauthtok);
return 0;
}
struct pam_data *create_pam_data(TALLOC_CTX *mem_ctx)
{
struct pam_data *pd;
pd = talloc_zero(mem_ctx, struct pam_data);
if (pd == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
goto failed;
}
pd->authtok = sss_authtok_new(pd);
if (pd->authtok == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
goto failed;
}
pd->newauthtok = sss_authtok_new(pd);
if (pd->newauthtok == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("talloc_zero failed.\n"));
goto failed;
}
talloc_set_destructor((TALLOC_CTX *) pd, pam_data_destructor);
return pd;
failed:
talloc_free(pd);
return NULL;
}
errno_t copy_pam_data(TALLOC_CTX *mem_ctx, struct pam_data *src,
struct pam_data **dst)
{
struct pam_data *pd = NULL;
errno_t ret;
pd = create_pam_data(mem_ctx);
if (pd == NULL) {
ret = ENOMEM;
goto failed;
}
pd->cmd = src->cmd;
pd->priv = src->priv;
pd->domain = talloc_strdup(pd, src->domain);
if (pd->domain == NULL && src->domain != NULL) {
ret = ENOMEM;
goto failed;
}
pd->user = talloc_strdup(pd, src->user);
if (pd->user == NULL && src->user != NULL) {
ret = ENOMEM;
goto failed;
}
pd->service = talloc_strdup(pd, src->service);
if (pd->service == NULL && src->service != NULL) {
ret = ENOMEM;
goto failed;
}
pd->tty = talloc_strdup(pd, src->tty);
if (pd->tty == NULL && src->tty != NULL) {
ret = ENOMEM;
goto failed;
}
pd->ruser = talloc_strdup(pd, src->ruser);
if (pd->ruser == NULL && src->ruser != NULL) {
ret = ENOMEM;
goto failed;
}
pd->rhost = talloc_strdup(pd, src->rhost);
if (pd->rhost == NULL && src->rhost != NULL) {
ret = ENOMEM;
goto failed;
}
pd->cli_pid = src->cli_pid;
/* if structure pam_data was allocated on stack and zero initialized,
* than src->authtok and src->newauthtok are NULL, therefore
* instead of copying, new empty authtok will be created.
*/
if (src->authtok) {
ret = sss_authtok_copy(src->authtok, pd->authtok);
if (ret) {
goto failed;
}
} else {
pd->authtok = sss_authtok_new(pd);
if (pd->authtok == NULL) {
ret = ENOMEM;
goto failed;
}
}
if (src->newauthtok) {
ret = sss_authtok_copy(src->newauthtok, pd->newauthtok);
if (ret) {
goto failed;
}
} else {
pd->newauthtok = sss_authtok_new(pd);
if (pd->newauthtok == NULL) {
ret = ENOMEM;
goto failed;
}
}
*dst = pd;
return EOK;
failed:
talloc_free(pd);
DEBUG(1, ("copy_pam_data failed: (%d) %s.\n", ret, strerror(ret)));
return ret;
}
void pam_print_data(int l, struct pam_data *pd)
{
DEBUG(l, ("command: %s\n", pamcmd2str(pd->cmd)));
DEBUG(l, ("domain: %s\n", PAM_SAFE_ITEM(pd->domain)));
DEBUG(l, ("user: %s\n", PAM_SAFE_ITEM(pd->user)));
DEBUG(l, ("service: %s\n", PAM_SAFE_ITEM(pd->service)));
DEBUG(l, ("tty: %s\n", PAM_SAFE_ITEM(pd->tty)));
DEBUG(l, ("ruser: %s\n", PAM_SAFE_ITEM(pd->ruser)));
DEBUG(l, ("rhost: %s\n", PAM_SAFE_ITEM(pd->rhost)));
DEBUG(l, ("authtok type: %d\n", sss_authtok_get_type(pd->authtok)));
DEBUG(l, ("newauthtok type: %d\n", sss_authtok_get_type(pd->newauthtok)));
DEBUG(l, ("priv: %d\n", pd->priv));
DEBUG(l, ("cli_pid: %d\n", pd->cli_pid));
}
int pam_add_response(struct pam_data *pd, enum response_type type,
int len, const uint8_t *data)
{
struct response_data *new;
new = talloc(pd, struct response_data);
if (new == NULL) return ENOMEM;
new->type = type;
new->len = len;
new->data = talloc_memdup(pd, data, len);
if (new->data == NULL) return ENOMEM;
new->do_not_send_to_client = false;
new->next = pd->resp_list;
pd->resp_list = new;
return EOK;
}
|
