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 2004 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include "libuutil_common.h"
30*0Sstevel@tonic-gate
31*0Sstevel@tonic-gate #include <string.h>
32*0Sstevel@tonic-gate
33*0Sstevel@tonic-gate /*
34*0Sstevel@tonic-gate * We require names of the form:
35*0Sstevel@tonic-gate * [provider,]identifier[/[provider,]identifier]...
36*0Sstevel@tonic-gate *
37*0Sstevel@tonic-gate * Where provider is either a stock symbol (SUNW) or a java-style reversed
38*0Sstevel@tonic-gate * domain name (com.sun).
39*0Sstevel@tonic-gate *
40*0Sstevel@tonic-gate * Both providers and identifiers must start with a letter, and may
41*0Sstevel@tonic-gate * only contain alphanumerics, dashes, and underlines. Providers
42*0Sstevel@tonic-gate * may also contain periods.
43*0Sstevel@tonic-gate *
44*0Sstevel@tonic-gate * Note that we do _not_ use the macros in <ctype.h>, since they are affected
45*0Sstevel@tonic-gate * by the current locale settings.
46*0Sstevel@tonic-gate */
47*0Sstevel@tonic-gate
48*0Sstevel@tonic-gate #define IS_ALPHA(c) \
49*0Sstevel@tonic-gate (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
50*0Sstevel@tonic-gate
51*0Sstevel@tonic-gate #define IS_DIGIT(c) \
52*0Sstevel@tonic-gate ((c) >= '0' && (c) <= '9')
53*0Sstevel@tonic-gate
54*0Sstevel@tonic-gate static int
is_valid_ident(const char * s,const char * e,int allowdot)55*0Sstevel@tonic-gate is_valid_ident(const char *s, const char *e, int allowdot)
56*0Sstevel@tonic-gate {
57*0Sstevel@tonic-gate char c;
58*0Sstevel@tonic-gate
59*0Sstevel@tonic-gate if (s >= e)
60*0Sstevel@tonic-gate return (0); /* name is empty */
61*0Sstevel@tonic-gate
62*0Sstevel@tonic-gate c = *s++;
63*0Sstevel@tonic-gate if (!IS_ALPHA(c))
64*0Sstevel@tonic-gate return (0); /* does not start with letter */
65*0Sstevel@tonic-gate
66*0Sstevel@tonic-gate while (s < e && (c = *s++) != 0) {
67*0Sstevel@tonic-gate if (IS_ALPHA(c) || IS_DIGIT(c) || c == '-' || c == '_' ||
68*0Sstevel@tonic-gate (allowdot && c == '.'))
69*0Sstevel@tonic-gate continue;
70*0Sstevel@tonic-gate return (0); /* invalid character */
71*0Sstevel@tonic-gate }
72*0Sstevel@tonic-gate return (1);
73*0Sstevel@tonic-gate }
74*0Sstevel@tonic-gate
75*0Sstevel@tonic-gate static int
is_valid_component(const char * b,const char * e,uint_t flags)76*0Sstevel@tonic-gate is_valid_component(const char *b, const char *e, uint_t flags)
77*0Sstevel@tonic-gate {
78*0Sstevel@tonic-gate char *sp;
79*0Sstevel@tonic-gate
80*0Sstevel@tonic-gate if (flags & UU_NAME_DOMAIN) {
81*0Sstevel@tonic-gate sp = strchr(b, ',');
82*0Sstevel@tonic-gate if (sp != NULL && sp < e) {
83*0Sstevel@tonic-gate if (!is_valid_ident(b, sp, 1))
84*0Sstevel@tonic-gate return (0);
85*0Sstevel@tonic-gate b = sp + 1;
86*0Sstevel@tonic-gate }
87*0Sstevel@tonic-gate }
88*0Sstevel@tonic-gate
89*0Sstevel@tonic-gate return (is_valid_ident(b, e, 0));
90*0Sstevel@tonic-gate }
91*0Sstevel@tonic-gate
92*0Sstevel@tonic-gate int
uu_check_name(const char * name,uint_t flags)93*0Sstevel@tonic-gate uu_check_name(const char *name, uint_t flags)
94*0Sstevel@tonic-gate {
95*0Sstevel@tonic-gate const char *end = name + strlen(name);
96*0Sstevel@tonic-gate const char *p;
97*0Sstevel@tonic-gate
98*0Sstevel@tonic-gate if (flags & ~(UU_NAME_DOMAIN | UU_NAME_PATH)) {
99*0Sstevel@tonic-gate uu_set_error(UU_ERROR_UNKNOWN_FLAG);
100*0Sstevel@tonic-gate return (-1);
101*0Sstevel@tonic-gate }
102*0Sstevel@tonic-gate
103*0Sstevel@tonic-gate if (!(flags & UU_NAME_PATH)) {
104*0Sstevel@tonic-gate if (!is_valid_component(name, end, flags))
105*0Sstevel@tonic-gate goto bad;
106*0Sstevel@tonic-gate return (0);
107*0Sstevel@tonic-gate }
108*0Sstevel@tonic-gate
109*0Sstevel@tonic-gate while ((p = strchr(name, '/')) != NULL) {
110*0Sstevel@tonic-gate if (!is_valid_component(name, p - 1, flags))
111*0Sstevel@tonic-gate goto bad;
112*0Sstevel@tonic-gate name = p + 1;
113*0Sstevel@tonic-gate }
114*0Sstevel@tonic-gate if (!is_valid_component(name, end, flags))
115*0Sstevel@tonic-gate goto bad;
116*0Sstevel@tonic-gate
117*0Sstevel@tonic-gate return (0);
118*0Sstevel@tonic-gate
119*0Sstevel@tonic-gate bad:
120*0Sstevel@tonic-gate uu_set_error(UU_ERROR_INVALID_ARGUMENT);
121*0Sstevel@tonic-gate return (-1);
122*0Sstevel@tonic-gate }
123