xref: /freebsd/contrib/openpam/lib/libpam/pam_setcred.c (revision 5ca8e32633c4ffbbcd6762e5888b6a4ba0708c6c)
1 /*-
2  * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3  * Copyright (c) 2004-2017 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 
36 #ifdef HAVE_CONFIG_H
37 # include "config.h"
38 #endif
39 
40 #include <sys/param.h>
41 
42 #include <security/pam_appl.h>
43 
44 #include "openpam_impl.h"
45 
46 /*
47  * XSSO 4.2.1
48  * XSSO 6 page 57
49  *
50  * Modify / delete user credentials for an authentication service
51  */
52 
53 int
54 pam_setcred(pam_handle_t *pamh,
55 	int flags)
56 {
57 	int r;
58 
59 	ENTER();
60 	if (flags & ~(PAM_SILENT|PAM_ESTABLISH_CRED|PAM_DELETE_CRED|
61 		PAM_REINITIALIZE_CRED|PAM_REFRESH_CRED))
62 		RETURNC(PAM_BAD_CONSTANT);
63 	/* XXX enforce exclusivity */
64 	r = openpam_dispatch(pamh, PAM_SM_SETCRED, flags);
65 	RETURNC(r);
66 }
67 
68 /*
69  * Error codes:
70  *
71  *	=openpam_dispatch
72  *	=pam_sm_setcred
73  *	!PAM_IGNORE
74  *	PAM_BAD_CONSTANT
75  */
76 
77 /**
78  * The =pam_setcred function manages the application's credentials.
79  *
80  * The =flags argument is the binary or of zero or more of the following
81  * values:
82  *
83  *	=PAM_SILENT:
84  *		Do not emit any messages.
85  *	=PAM_ESTABLISH_CRED:
86  *		Establish the credentials of the target user.
87  *	=PAM_DELETE_CRED:
88  *		Revoke all established credentials.
89  *	=PAM_REINITIALIZE_CRED:
90  *		Fully reinitialise credentials.
91  *	=PAM_REFRESH_CRED:
92  *		Refresh credentials.
93  *
94  * The latter four are mutually exclusive.
95  *
96  * If any other bits are set, =pam_setcred will return =PAM_BAD_CONSTANT.
97  */
98