xref: /freebsd/contrib/openpam/lib/libpam/pam_setcred.c (revision 0b3105a37d7adcadcb720112fed4dc4e8040be99)
1 /*-
2  * Copyright (c) 2002-2003 Networks Associates Technology, Inc.
3  * Copyright (c) 2004-2011 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_setcred.c 648 2013-03-05 17:54:27Z des $
36  */
37 
38 #ifdef HAVE_CONFIG_H
39 # include "config.h"
40 #endif
41 
42 #include <sys/param.h>
43 
44 #include <security/pam_appl.h>
45 
46 #include "openpam_impl.h"
47 
48 /*
49  * XSSO 4.2.1
50  * XSSO 6 page 57
51  *
52  * Modify / delete user credentials for an authentication service
53  */
54 
55 int
56 pam_setcred(pam_handle_t *pamh,
57 	int flags)
58 {
59 	int r;
60 
61 	ENTER();
62 	if (flags & ~(PAM_SILENT|PAM_ESTABLISH_CRED|PAM_DELETE_CRED|
63 		PAM_REINITIALIZE_CRED|PAM_REFRESH_CRED))
64 		RETURNC(PAM_SYMBOL_ERR);
65 	/* XXX enforce exclusivity */
66 	r = openpam_dispatch(pamh, PAM_SM_SETCRED, flags);
67 	RETURNC(r);
68 }
69 
70 /*
71  * Error codes:
72  *
73  *	=openpam_dispatch
74  *	=pam_sm_setcred
75  *	!PAM_IGNORE
76  *	PAM_SYMBOL_ERR
77  */
78 
79 /**
80  * The =pam_setcred function manages the application's credentials.
81  *
82  * The =flags argument is the binary or of zero or more of the following
83  * values:
84  *
85  *	=PAM_SILENT:
86  *		Do not emit any messages.
87  *	=PAM_ESTABLISH_CRED:
88  *		Establish the credentials of the target user.
89  *	=PAM_DELETE_CRED:
90  *		Revoke all established credentials.
91  *	=PAM_REINITIALIZE_CRED:
92  *		Fully reinitialise credentials.
93  *	=PAM_REFRESH_CRED:
94  *		Refresh credentials.
95  *
96  * The latter four are mutually exclusive.
97  *
98  * If any other bits are set, =pam_setcred will return =PAM_SYMBOL_ERR.
99  */
100