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pam_setcred.c revision 1.3 
      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 Smrgrav
      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