1/*-
2 * Copyright (c) 2002 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by ThinkSec AS and
6 * NAI Labs, the Security Research Division of Network Associates, Inc.
7 * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
8 * DARPA CHATS research program.

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26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * $P4: //depot/projects/openpam/lib/pam_get_user.c#10 $
35 */
36
37#include <sys/param.h>
38
39#include <security/pam_appl.h>
40#include <security/openpam.h>
41
42#include "openpam_impl.h"
43
44/*
45 * XSSO 4.2.1
46 * XSSO 6 page 52
47 *
48 * Retrieve user name
49 */
50
51int
52pam_get_user(pam_handle_t *pamh,
53 const char **user,
54 const char *prompt)
55{
56 char *p, *resp;
57 int r;
58
59 if (pamh == NULL || user == NULL)
60 return (PAM_SYSTEM_ERR);
61
62 r = pam_get_item(pamh, PAM_USER, (const void **)user);
63 if (r == PAM_SUCCESS)
64 return (PAM_SUCCESS);
65 if (prompt == NULL) {
66 if (pam_get_item(pamh, PAM_USER_PROMPT,
67 (const void **)&p) != PAM_SUCCESS || p == NULL)
68 prompt = "Login: ";
69 }
70 r = pam_prompt(pamh, PAM_PROMPT_ECHO_ON, &resp,
71 "%s", prompt ? prompt : p);
72 if (r != PAM_SUCCESS)
73 return (r);
74 *user = resp;
75 return (pam_set_item(pamh, PAM_USER, *user));
76}
77
78/*
79 * Error codes:
80 *
81 * =pam_get_item
82 * =pam_prompt
83 * =pam_set_item
84 * !PAM_SYMBOL_ERR
85 */