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
|
/*
* Copyright (c) 2009 - 2010, Nicolas François
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the copyright holders or contributors may not be used to
* endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <config.h>
#ident "$Id:$"
#ifdef USE_PAM
#include <assert.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <security/pam_appl.h>
#include "prototypes.h"
/*@null@*/ /*@only@*/static const char *non_interactive_password = NULL;
static int ni_conv (int num_msg,
const struct pam_message **msg,
struct pam_response **resp,
unused void *appdata_ptr);
static struct pam_conv non_interactive_pam_conv = {
ni_conv,
NULL
};
static int ni_conv (int num_msg,
const struct pam_message **msg,
struct pam_response **resp,
unused void *appdata_ptr)
{
struct pam_response *responses;
int count;
assert (NULL != non_interactive_password);
if (num_msg <= 0) {
return PAM_CONV_ERR;
}
responses = (struct pam_response *) calloc ((size_t) num_msg,
sizeof (*responses));
if (NULL == responses) {
return PAM_CONV_ERR;
}
for (count=0; count < num_msg; count++) {
responses[count].resp_retcode = 0;
switch (msg[count]->msg_style) {
case PAM_PROMPT_ECHO_ON:
fprintf (stderr,
_("%s: PAM modules requesting echoing are not supported.\n"),
Prog);
goto failed_conversation;
case PAM_PROMPT_ECHO_OFF:
responses[count].resp = strdup (non_interactive_password);
if (NULL == responses[count].resp) {
goto failed_conversation;
}
break;
case PAM_ERROR_MSG:
if ( (NULL == msg[count]->msg)
|| (fprintf (stderr, "%s\n", msg[count]->msg) <0)) {
goto failed_conversation;
}
responses[count].resp = NULL;
break;
case PAM_TEXT_INFO:
if ( (NULL == msg[count]->msg)
|| (fprintf (stdout, "%s\n", msg[count]->msg) <0)) {
goto failed_conversation;
}
responses[count].resp = NULL;
break;
default:
(void) fprintf (stderr,
_("%s: conversation type %d not supported.\n"),
Prog, msg[count]->msg_style);
goto failed_conversation;
}
}
*resp = responses;
return PAM_SUCCESS;
failed_conversation:
for (count=0; count < num_msg; count++) {
if (NULL != responses[count].resp) {
memset (responses[count].resp, 0,
strlen (responses[count].resp));
free (responses[count].resp);
responses[count].resp = NULL;
}
}
free (responses);
*resp = NULL;
return PAM_CONV_ERR;
}
/*
* Change non interactively the user's password using PAM.
*
* Return 0 on success, 1 on failure.
*/
int do_pam_passwd_non_interractive (const char *pam_service,
const char *username,
const char* password)
{
pam_handle_t *pamh = NULL;
int ret;
ret = pam_start (pam_service, username, &non_interactive_pam_conv, &pamh);
if (ret != PAM_SUCCESS) {
fprintf (stderr,
_("%s: (user %s) pam_start failure %d\n"),
Prog, username, ret);
return 1;
}
non_interactive_password = password;
ret = pam_chauthtok (pamh, 0);
if (ret != PAM_SUCCESS) {
fprintf (stderr,
_("%s: (user %s) pam_chauthtok() failed, error:\n"
"%s\n"),
Prog, username, pam_strerror (pamh, ret));
}
(void) pam_end (pamh, PAM_SUCCESS);
return ((PAM_SUCCESS == ret) ? 0 : 1);
}
#else /* !USE_PAM */
extern int errno; /* warning: ANSI C forbids an empty source file */
#endif /* !USE_PAM */
|
