2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 Dag-Erling Smørgrav
6 * This software was developed for the FreeBSD Project by ThinkSec AS and
7 * Network Associates Laboratories, the Security Research Division of
8 * Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
9 * ("CBOSS"), as part of the DARPA CHATS research program.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 * 3. The name of the author may not be used to endorse or promote
20 * products derived from this software without specific prior written
23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * $Id: pam_get_user.c 408 2007-12-21 11:36:24Z des $
38 #include <sys/param.h>
42 #include <security/pam_appl.h>
43 #include <security/openpam.h>
45 #include "openpam_impl.h"
47 static const char user_prompt[] = "Login:";
57 pam_get_user(pam_handle_t *pamh,
66 if (pamh == NULL || user == NULL)
67 RETURNC(PAM_SYSTEM_ERR);
68 r = pam_get_item(pamh, PAM_USER, (const void **)user);
69 if (r == PAM_SUCCESS && *user != NULL)
72 r = pam_get_item(pamh, PAM_USER_PROMPT, &promptp);
73 if (r != PAM_SUCCESS || promptp == NULL)
78 r = pam_prompt(pamh, PAM_PROMPT_ECHO_ON, &resp, "%s", prompt);
81 r = pam_set_item(pamh, PAM_USER, resp);
85 r = pam_get_item(pamh, PAM_USER, (const void **)user);
99 * The =pam_get_user function returns the name of the target user, as
100 * specified to =pam_start.
101 * If no user was specified, nor set using =pam_set_item, =pam_get_user
102 * will prompt for a user name.
103 * Either way, a pointer to the user name is stored in the location
104 * pointed to by the =user argument.
106 * The =prompt argument specifies a prompt to use if no user name is
108 * If it is =NULL, the =PAM_USER_PROMPT will be used.
109 * If that item is also =NULL, a hardcoded default prompt will be used.