xref: /titanic_41/usr/src/lib/libbc/libc/gen/common/crypt.c (revision 4496171313bed39e96f21bc2f9faf2868e267ae3)
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 1990 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"  /* from S5R2 1.3 */
28 
29 /*LINTLIBRARY*/
30 /* The real crypt is now _crypt.  This version performs automatic
31  * authentication via pwauth for special password entries, or simply
32  * calls _crypt for the usual case.
33  */
34 
35 char *
36 crypt(pw, salt)
37 char	*pw, *salt;
38 {
39 	static char *iobuf;
40 	extern char *_crypt();
41 	extern char *malloc();
42 
43 	if (iobuf == 0) {
44 		iobuf = malloc((unsigned)16);
45 		if (iobuf == 0)
46 			return (0);
47 	}
48 	/* handle the case where the password is really in passwd.adjunct.
49 	 * In this case, the salt will start with "##".  We should call
50 	 * passauth to determine if pw is valid.  If so, we should return
51 	 * the salt, and otherwise return NULL.  If salt does not start with
52 	 * "##", crypt will act in the normal fashion.
53 	 */
54 	if (salt[0] == '#' && salt[1] == '#') {
55 		if (pwdauth(salt+2, pw) == 0)
56 			strcpy(iobuf, salt);
57 		else
58 			iobuf[0] = '\0';
59 		return(iobuf);
60 	}
61 	/* handle the case where the password is really in group.adjunct.
62 	 * In this case, the salt will start with "#$".  We should call
63 	 * grpauth to determine if pw is valid.  If so, we should return
64 	 * the salt, and otherwise return NULL.  If salt does not start with
65 	 * "#$", crypt will act in the normal fashion.
66 	 */
67 	if (salt[0] == '#' && salt[1] == '$') {
68 		if (grpauth(salt+2, pw) == 0)
69 			strcpy(iobuf, salt);
70 		else
71 			iobuf[0] = '\0';
72 		return(iobuf);
73 	}
74 	return (_crypt(pw, salt));
75 }
76