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
|
/*-
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by ThinkSec AS and
* NAI Labs, the Security Research Division of Network Associates, Inc.
* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
* DARPA CHATS research program.
*
* 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 author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $P4: //depot/projects/openpam/lib/pam_get_user.c#11 $
*/
#include <sys/param.h>
#include <stdlib.h>
#include <security/pam_appl.h>
#include <security/openpam.h>
#include "openpam_impl.h"
const char user_prompt[] = "Login:";
/*
* XSSO 4.2.1
* XSSO 6 page 52
*
* Retrieve user name
*/
int
pam_get_user(pam_handle_t *pamh,
const char **user,
const char *prompt)
{
char *resp;
int r;
if (pamh == NULL || user == NULL)
return (PAM_SYSTEM_ERR);
r = pam_get_item(pamh, PAM_USER, (const void **)user);
if (r == PAM_SUCCESS)
return (PAM_SUCCESS);
if (prompt == NULL) {
r = pam_get_item(pamh, PAM_USER_PROMPT, (const void **)&prompt);
if (r != PAM_SUCCESS || prompt == NULL)
prompt = user_prompt;
}
r = pam_prompt(pamh, PAM_PROMPT_ECHO_ON, &resp, "%s", prompt);
if (r != PAM_SUCCESS)
return (r);
r = pam_set_item(pamh, PAM_USER, resp);
free(resp);
if (r != PAM_SUCCESS)
return (r);
return (pam_get_item(pamh, PAM_USER, (const void **)user));
}
/*
* Error codes:
*
* =pam_get_item
* =pam_prompt
* =pam_set_item
* !PAM_SYMBOL_ERR
*/
/**
* The =pam_get_user function returns the name of the target user, as
* specified to =pam_start. If no user was specified, nor set using
* =pam_set_item, =pam_get_user will prompt for a user name. Either way,
* a pointer to the user name is stored in the location pointed to by the
* =user argument.
* The =prompt argument specifies a prompt to use if no user name is
* cached. If it is =NULL, the =PAM_USER_PROMPT will be used. If that
* item is also =NULL, a hardcoded default prompt will be used.
*
* >pam_get_item
* >pam_get_authtok
*/
|
