1/*-
2 * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3 * Copyright (c) 2004-2007 Dag-Erling Smørgrav
4 * All rights reserved.
5 *
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.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
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
21 *    permission.
22 *
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
33 * SUCH DAMAGE.
34 *
35 * $Id: pam_start.c 408 2007-12-21 11:36:24Z des $
36 */
37
38#include <stdlib.h>
39
40#include <security/pam_appl.h>
41
42#include "openpam_impl.h"
43
44/*
45 * XSSO 4.2.1
46 * XSSO 6 page 89
47 *
48 * Initiate a PAM transaction
49 */
50
51int
52pam_start(const char *service,
53	const char *user,
54	const struct pam_conv *pam_conv,
55	pam_handle_t **pamh)
56{
57	struct pam_handle *ph;
58	int r;
59
60	ENTER();
61	if ((ph = calloc(1, sizeof *ph)) == NULL)
62		RETURNC(PAM_BUF_ERR);
63	if ((r = pam_set_item(ph, PAM_SERVICE, service)) != PAM_SUCCESS)
64		goto fail;
65	if ((r = pam_set_item(ph, PAM_USER, user)) != PAM_SUCCESS)
66		goto fail;
67	if ((r = pam_set_item(ph, PAM_CONV, pam_conv)) != PAM_SUCCESS)
68		goto fail;
69
70	r = openpam_configure(ph, service);
71	if (r != PAM_SUCCESS)
72		goto fail;
73
74	*pamh = ph;
75	openpam_log(PAM_LOG_LIBDEBUG, "pam_start(\"%s\") succeeded", service);
76	RETURNC(PAM_SUCCESS);
77
78 fail:
79	pam_end(ph, r);
80	RETURNC(r);
81}
82
83/*
84 * Error codes:
85 *
86 *	=openpam_configure
87 *	=pam_set_item
88 *	!PAM_SYMBOL_ERR
89 *	PAM_BUF_ERR
90 */
91
92/**
93 * The =pam_start function creates and initializes a PAM context.
94 *
95 * The =service argument specifies the name of the policy to apply, and is
96 * stored in the =PAM_SERVICE item in the created context.
97 *
98 * The =user argument specifies the name of the target user - the user the
99 * created context will serve to authenticate.
100 * It is stored in the =PAM_USER item in the created context.
101 *
102 * The =pam_conv argument points to a =struct pam_conv describing the
103 * conversation function to use; see =pam_conv for details.
104 *
105 * >pam_get_item
106 * >pam_set_item
107 * >pam_end
108 */
109