1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright (c) 1997, by Sun Microsystems, Inc.
24*0Sstevel@tonic-gate * All rights reserved.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28*0Sstevel@tonic-gate /* All Rights Reserved */
29*0Sstevel@tonic-gate
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /*LINTLIBRARY*/
34*0Sstevel@tonic-gate
35*0Sstevel@tonic-gate #include <sys/types.h>
36*0Sstevel@tonic-gate #include <stdio.h>
37*0Sstevel@tonic-gate #include <ctype.h>
38*0Sstevel@tonic-gate #include <userdefs.h>
39*0Sstevel@tonic-gate #include <users.h>
40*0Sstevel@tonic-gate #include <limits.h>
41*0Sstevel@tonic-gate
42*0Sstevel@tonic-gate /*
43*0Sstevel@tonic-gate * validate string given as login name.
44*0Sstevel@tonic-gate */
45*0Sstevel@tonic-gate int
valid_login(char * login,struct passwd ** pptr,int * warning)46*0Sstevel@tonic-gate valid_login(char *login, struct passwd **pptr, int *warning)
47*0Sstevel@tonic-gate {
48*0Sstevel@tonic-gate struct passwd *t_pptr;
49*0Sstevel@tonic-gate char *ptr = login;
50*0Sstevel@tonic-gate int bad1char, badc, clower, len;
51*0Sstevel@tonic-gate char c;
52*0Sstevel@tonic-gate
53*0Sstevel@tonic-gate len = 0; clower = 0; badc = 0; bad1char = 0;
54*0Sstevel@tonic-gate *warning = 0;
55*0Sstevel@tonic-gate if (!login || !*login)
56*0Sstevel@tonic-gate return (INVALID);
57*0Sstevel@tonic-gate
58*0Sstevel@tonic-gate c = *ptr;
59*0Sstevel@tonic-gate if (!isalpha(c))
60*0Sstevel@tonic-gate bad1char++;
61*0Sstevel@tonic-gate for (; c != NULL; ptr++, c = *ptr) {
62*0Sstevel@tonic-gate len++;
63*0Sstevel@tonic-gate if (!isprint(c) || (c == ':') || (c == '\n'))
64*0Sstevel@tonic-gate return (INVALID);
65*0Sstevel@tonic-gate if (!isalnum(c) && c != '_' && c != '-' && c != '.')
66*0Sstevel@tonic-gate badc++;
67*0Sstevel@tonic-gate if (islower(c))
68*0Sstevel@tonic-gate clower++;
69*0Sstevel@tonic-gate }
70*0Sstevel@tonic-gate
71*0Sstevel@tonic-gate /*
72*0Sstevel@tonic-gate * XXX length checking causes some operational/compatibility problem.
73*0Sstevel@tonic-gate * This has to be revisited in the future as ARC/standards issue.
74*0Sstevel@tonic-gate */
75*0Sstevel@tonic-gate if (len > LOGNAME_MAX)
76*0Sstevel@tonic-gate *warning = *warning | WARN_NAME_TOO_LONG;
77*0Sstevel@tonic-gate if (clower == 0)
78*0Sstevel@tonic-gate *warning = *warning | WARN_NO_LOWERCHAR;
79*0Sstevel@tonic-gate if (badc != 0)
80*0Sstevel@tonic-gate *warning = *warning | WARN_BAD_LOGNAME_CHAR;
81*0Sstevel@tonic-gate if (bad1char != 0)
82*0Sstevel@tonic-gate *warning = *warning | WARN_BAD_LOGNAME_FIRST;
83*0Sstevel@tonic-gate
84*0Sstevel@tonic-gate if ((t_pptr = getpwnam(login)) != NULL) {
85*0Sstevel@tonic-gate if (pptr) *pptr = t_pptr;
86*0Sstevel@tonic-gate return (NOTUNIQUE);
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate return (UNIQUE);
89*0Sstevel@tonic-gate }
90