xref: /titanic_50/usr/src/lib/libbc/libc/gen/common/pwdauth.c (revision 0a1278f26ea4b7c8c0285d4f2d6c5b680904aa01)
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 1992 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <stdio.h>
30 #include <pwd.h>
31 #include <shadow.h>
32 #include <errno.h>
33 
34 /*
35  * Version to go in the BCP compatibility library in SVr4 version of
36  * SunOS. This does not bother talking to rpc.pwdauthd or looking for the
37  * password.adjunct file on the system since they do not exist anymore.
38  * They have been effectively replaced by a more robust aging security provided
39  * by the combination of /etc/shadow file, shadow support in the NIS+
40  * passwd table and the use of secure RPC in NIS+.
41  */
42 
43 int
44 pwdauth(char *name, char *password)
45 {
46 	/*
47 	 * this routine authenticates a password for the named user.
48 	 * Assumes the adjunct file does not exist.
49 	 * and therefore checks the passwd "source" using the standard
50 	 * getpwnam(3C) routine that uses /etc/nsswitch.conf(4).
51 	 */
52 
53 	struct passwd	*pwp = NULL;
54 	struct spwd	*spwp = NULL;
55 	char *enpwp;
56 
57 	if (spwp = getspnam(name))
58 		enpwp = spwp->sp_pwdp;
59 	else if (pwp = getpwnam(name))
60 		enpwp = pwp->pw_passwd;
61 	else
62 		/* user is not in main password system */
63 		return (-1);
64 	if (enpwp[0] == '#' && enpwp[1] == '#') {
65 		/* this means that /etc/passwd has problems */
66 		fprintf(stderr, "pwdauth: bad passwd entry for %s\n",
67 		    name);
68 		return (-1);
69 	}
70 	if (strcmp(crypt(password, enpwp), enpwp) == 0)
71 		return (0);
72 	else
73 		return (-1);
74 }
75