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 (c) 1997, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
28 /* All Rights Reserved */
29
30
31 #pragma ident "%Z%%M% %I% %E% SMI" /* SVr4.0 1.3 */
32
33 /*LINTLIBRARY*/
34
35 #include <sys/types.h>
36 #include <stdio.h>
37 #include <ctype.h>
38 #include <userdefs.h>
39 #include <users.h>
40 #include <limits.h>
41
42 /*
43 * validate string given as login name.
44 */
45 int
46 valid_login(char *login, struct passwd **pptr, int *warning)
47 {
48 struct passwd *t_pptr;
49 char *ptr = login;
50 int bad1char, badc, clower, len;
51 char c;
52
53 len = 0; clower = 0; badc = 0; bad1char = 0;
54 *warning = 0;
55 if (!login || !*login)
56 return (INVALID);
57
58 c = *ptr;
59 if (!isalpha(c))
60 bad1char++;
61 for (; c != NULL; ptr++, c = *ptr) {
62 len++;
63 if (!isprint(c) || (c == ':') || (c == '\n'))
64 return (INVALID);
65 if (!isalnum(c) && c != '_' && c != '-' && c != '.')
66 badc++;
67 if (islower(c))
68 clower++;
69 }
70
71 /*
72 * XXX length checking causes some operational/compatibility problem.
73 * This has to be revisited in the future as ARC/standards issue.
74 */
75 if (len > LOGNAME_MAX)
76 *warning = *warning | WARN_NAME_TOO_LONG;
77 if (clower == 0)
78 *warning = *warning | WARN_NO_LOWERCHAR;
79 if (badc != 0)
80 *warning = *warning | WARN_BAD_LOGNAME_CHAR;
81 if (bad1char != 0)
82 *warning = *warning | WARN_BAD_LOGNAME_FIRST;
83
84 if ((t_pptr = getpwnam(login)) != NULL) {
85 if (pptr) *pptr = t_pptr;
86 return (NOTUNIQUE);
87 }
88 return (UNIQUE);
89 }
|
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 (c) 2013 Gary Mills
24 *
25 * Copyright (c) 1997, by Sun Microsystems, Inc.
26 * All rights reserved.
27 */
28
29 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
30 /* All Rights Reserved */
31
32 /*LINTLIBRARY*/
33
34 #include <sys/types.h>
35 #include <stdio.h>
36 #include <ctype.h>
37 #include <userdefs.h>
38 #include <users.h>
39 #include <deflt.h>
40 #include <limits.h>
41
42 /* Defaults file */
43 #define DEFAULT_USERADD "/etc/default/useradd"
44
45 /* Traditional length limit */
46 #define TRAD_LEN_MAX 8
47
48 /*
49 * validate string given as login name.
50 */
51 int
52 valid_login(char *login, struct passwd **pptr, int *warning)
53 {
54 struct passwd *t_pptr;
55 char *ptr = login;
56 int bad1char, badc, clower, len;
57 char c;
58 char action;
59
60 len = 0; clower = 0; badc = 0; bad1char = 0;
61 *warning = 0;
62 if (!login || !*login)
63 return (INVALID);
64
65 c = *ptr;
66 if (!isalpha(c))
67 bad1char++;
68 for (; c != NULL; ptr++, c = *ptr) {
69 len++;
70 if (!isprint(c) || (c == ':') || (c == '\n'))
71 return (INVALID);
72 if (!isalnum(c) && c != '_' && c != '-' && c != '.')
73 badc++;
74 if (islower(c))
75 clower++;
76 }
77
78 action = 'w';
79 if (defopen(DEFAULT_USERADD) == 0) {
80 char *defptr;
81
82 if ((defptr = defread("EXCEED_TRAD=")) != NULL) {
83 char let = tolower(*defptr);
84
85 switch (let) {
86 case 'w': /* warning */
87 case 'e': /* error */
88 case 's': /* silent */
89 action = let;
90 break;
91 }
92 }
93 (void) defopen((char *)NULL);
94 }
95
96 if (len > LOGNAME_MAX)
97 return (LONGNAME);
98
99 if (len > TRAD_LEN_MAX) {
100 if (action == 'w')
101 *warning = *warning | WARN_NAME_TOO_LONG;
102 else if (action == 'e')
103 return (LONGNAME);
104 }
105
106 if (clower == 0)
107 *warning = *warning | WARN_NO_LOWERCHAR;
108 if (badc != 0)
109 *warning = *warning | WARN_BAD_LOGNAME_CHAR;
110 if (bad1char != 0)
111 *warning = *warning | WARN_BAD_LOGNAME_FIRST;
112
113 if ((t_pptr = getpwnam(login)) != NULL) {
114 if (pptr) *pptr = t_pptr;
115 return (NOTUNIQUE);
116 }
117 return (UNIQUE);
118 }
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