pam_vprompt.c revision 91094 
1/*-
2 * Copyright (c) 2002 Networks Associates Technologies, 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.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. The name of the author may not be used to endorse or promote
19 *    products derived from this software without specific prior written
20 *    permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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 * $Id$
35 */
36
37#include <stdarg.h>
38#include <stdio.h>
39#include <stdlib.h>
40
41#include <security/pam_appl.h>
42#include <security/openpam.h>
43
44/*
45 * OpenPAM extension
46 *
47 * Call the conversation function
48 */
49
50int
51pam_vprompt(pam_handle_t *pamh,
52	int style,
53	char **resp,
54	const char *fmt,
55	va_list ap)
56{
57	char msgbuf[PAM_MAX_MSG_SIZE];
58	struct pam_message msg;
59	const struct pam_message *msgp;
60	struct pam_response *rsp;
61	struct pam_conv conv;
62	int r;
63
64	if ((r = pam_get_item(pamh, PAM_CONV, (void *)&conv)) != PAM_SUCCESS)
65		return (r);
66	vsnprintf(msgbuf, PAM_MAX_MSG_SIZE, fmt, ap);
67	msg.msg_style = style;
68	msg.msg = msgbuf;
69	msgp = &msg;
70	r = (conv.conv)(1, &msgp, &rsp, conv.appdata_ptr);
71	*resp = rsp == NULL ? NULL : rsp->resp;
72	free(rsp);
73	return (r);
74}
75