1/*	$NetBSD: cd9660_strings.c,v 1.4 2007/01/16 17:32:05 hubertf Exp $	*/
2
3/*
4 * Copyright (c) 2005 Daniel Watt, Walter Deignan, Ryan Gabrys, Alan
5 * Perez-Rathke and Ram Vedam.  All rights reserved.
6 *
7 * This code was written by Daniel Watt, Walter Deignan, Ryan Gabrys,
8 * Alan Perez-Rathke and Ram Vedam.
9 *
10 * Redistribution and use in source and binary forms, with or
11 * without modification, are permitted provided that the following
12 * conditions are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above
16 *    copyright notice, this list of conditions and the following
17 *    disclaimer in the documentation and/or other materials provided
18 *    with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY DANIEL WATT, WALTER DEIGNAN, RYAN
21 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
24 * DISCLAIMED.  IN NO EVENT SHALL DANIEL WATT, WALTER DEIGNAN, RYAN
25 * GABRYS, ALAN PEREZ-RATHKE AND RAM VEDAM BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
28 * USE,DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
32 * OF SUCH DAMAGE.
33 */
34
35#include <sys/mount.h>
36
37#include <sys/cdefs.h>
38__FBSDID("$FreeBSD: releng/11.0/usr.sbin/makefs/cd9660/cd9660_strings.c 219956 2011-03-24 12:35:59Z bapt $");
39#include <sys/param.h>
40#include <ctype.h>
41
42#include "makefs.h"
43#include "cd9660.h"
44
45
46void
47cd9660_uppercase_characters(char *str, int len)
48{
49	int p;
50
51	for (p = 0; p < len; p++) {
52		if (islower((unsigned char)str[p]) )
53			str[p] -= 32;
54	}
55}
56
57static inline int
58cd9660_is_d_char(char c)
59{
60	return (isupper((unsigned char)c)
61		|| c == '_'
62		|| (c >= '0' && c <= '9'));
63}
64
65static inline int
66cd9660_is_a_char(char c)
67{
68	return (isupper((unsigned char)c)
69			|| c == '_'
70			|| (c >= '%' && c <= '?')
71			|| (c >= ' ' && c <= '\"'));
72}
73
74/*
75 * Test a string to see if it is composed of valid a characters
76 * @param const char* The string to test
77 * @returns int 1 if valid, 2 if valid if characters are converted to
78 *              upper case, 0 otherwise
79 */
80int
81cd9660_valid_a_chars(const char *str)
82{
83	const char *c = str;
84	int upperFound = 0;
85
86	while ((*c) != '\0') {
87		if (!(cd9660_is_a_char(*c))) {
88			if (islower((unsigned char)*c) )
89				upperFound = 1;
90			else
91				return 0;
92		}
93		c++;
94	}
95	return upperFound + 1;
96}
97
98/*
99 * Test a string to see if it is composed of valid d characters
100 * @param const char* The string to test
101 * @returns int 1 if valid, 2 if valid if characters are converted to
102 *                upper case, 0 otherwise
103 */
104int
105cd9660_valid_d_chars(const char *str)
106{
107	const char *c=str;
108	int upperFound = 0;
109
110	while ((*c) != '\0') {
111		if (!(cd9660_is_d_char(*c))) {
112			if (islower((unsigned char)*c) )
113				upperFound = 1;
114			else
115				return 0;
116		}
117		c++;
118	}
119	return upperFound + 1;
120}
121