xref: /illumos-gate/usr/src/lib/passwdutil/__check_history.c (revision 9164a50bf932130cbb5097a16f6986873ce0e6e5)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  * Copyright 2024 OmniOS Community Edition (OmniOSce) Association.
26  */
27 
28 #include <nsswitch.h>
29 
30 #include "passwdutil.h"
31 
32 /*
33  *	__check_history - check if a user's new password is in the user's
34  *		old password history.
35  *
36  *	Entry
37  *		user = username.
38  *		passwd = new clear text password.
39  *		rep = repositories to check.
40  *
41  *	Exit
42  *		PWU_SUCCESS, passwd found in user's old password history.
43  *			The caller should only be interested and fail if
44  *			PWU_SUCCESS is returned.
45  *		PWU_NOT_FOUND, passwd not in user's old password history.
46  *		PWU_errors, PWU_ errors from other routines.
47  *
48  */
49 int
50 __check_history(const char *user, const char *passwd, pwu_repository_t *rep)
51 {
52 	int repositories;
53 	int i;
54 	int res;
55 
56 	repositories = get_ns(rep, PWU_READ);
57 
58 	if (repositories == 0)
59 		return (PWU_SYSTEM_ERROR);
60 
61 	if (repositories == REP_ERANGE)
62 		return (PWU_REPOSITORY_ERROR);
63 
64 	i = REP_FILES;
65 	res = PWU_NOT_FOUND;
66 
67 	/* Loop over repositories until the user is found */
68 	while ((i <= REP_LAST) && (res == PWU_NOT_FOUND)) {
69 		if (repositories & i)
70 			if (rops[i]->checkhistory != NULL)
71 				res = rops[i]->checkhistory(user, passwd, rep);
72 		i <<= 1;
73 	}
74 	return (res);
75 }
76