xref: /netbsd-src/external/bsd/openpam/dist/lib/libpam/pam_setcred.c (revision 82d56013d7b633d116a93943de88e08335357a7c)
1 /*	$NetBSD: pam_setcred.c,v 1.3 2017/05/06 19:50:10 christos Exp $	*/
2 
3 /*-
4  * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
5  * Copyright (c) 2004-2017 Dag-Erling Smørgrav
6  * All rights reserved.
7  *
8  * This software was developed for the FreeBSD Project by ThinkSec AS and
9  * Network Associates Laboratories, the Security Research Division of
10  * Network Associates, Inc.  under DARPA/SPAWAR contract N66001-01-C-8035
11  * ("CBOSS"), as part of the DARPA CHATS research program.
12  *
13  * Redistribution and use in source and binary forms, with or without
14  * modification, are permitted provided that the following conditions
15  * are met:
16  * 1. Redistributions of source code must retain the above copyright
17  *    notice, this list of conditions and the following disclaimer.
18  * 2. Redistributions in binary form must reproduce the above copyright
19  *    notice, this list of conditions and the following disclaimer in the
20  *    documentation and/or other materials provided with the distribution.
21  * 3. The name of the author may not be used to endorse or promote
22  *    products derived from this software without specific prior written
23  *    permission.
24  *
25  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
29  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35  * SUCH DAMAGE.
36  *
37  * $OpenPAM: pam_setcred.c 938 2017-04-30 21:34:42Z des $
38  */
39 
40 #ifdef HAVE_CONFIG_H
41 # include "config.h"
42 #endif
43 
44 #include <sys/cdefs.h>
45 __RCSID("$NetBSD: pam_setcred.c,v 1.3 2017/05/06 19:50:10 christos Exp $");
46 
47 #include <sys/param.h>
48 
49 #include <security/pam_appl.h>
50 
51 #include "openpam_impl.h"
52 
53 /*
54  * XSSO 4.2.1
55  * XSSO 6 page 57
56  *
57  * Modify / delete user credentials for an authentication service
58  */
59 
60 int
61 pam_setcred(pam_handle_t *pamh,
62 	int flags)
63 {
64 	int r;
65 
66 	ENTER();
67 	if (flags & ~(PAM_SILENT|PAM_ESTABLISH_CRED|PAM_DELETE_CRED|
68 		PAM_REINITIALIZE_CRED|PAM_REFRESH_CRED))
69 		RETURNC(PAM_BAD_CONSTANT);
70 	/* XXX enforce exclusivity */
71 	r = openpam_dispatch(pamh, PAM_SM_SETCRED, flags);
72 	RETURNC(r);
73 }
74 
75 /*
76  * Error codes:
77  *
78  *	=openpam_dispatch
79  *	=pam_sm_setcred
80  *	!PAM_IGNORE
81  *	PAM_BAD_CONSTANT
82  */
83 
84 /**
85  * The =pam_setcred function manages the application's credentials.
86  *
87  * The =flags argument is the binary or of zero or more of the following
88  * values:
89  *
90  *	=PAM_SILENT:
91  *		Do not emit any messages.
92  *	=PAM_ESTABLISH_CRED:
93  *		Establish the credentials of the target user.
94  *	=PAM_DELETE_CRED:
95  *		Revoke all established credentials.
96  *	=PAM_REINITIALIZE_CRED:
97  *		Fully reinitialise credentials.
98  *	=PAM_REFRESH_CRED:
99  *		Refresh credentials.
100  *
101  * The latter four are mutually exclusive.
102  *
103  * If any other bits are set, =pam_setcred will return =PAM_BAD_CONSTANT.
104  */
105