1/*	$NetBSD: cd9660_strings.c,v 1.6 2015/12/24 15:52:37 christos 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#if HAVE_NBTOOL_CONFIG_H
 36#include "nbtool_config.h"
 37#else
 38#include <sys/mount.h>
 39#endif
 40
 41#include <sys/cdefs.h>
 42#include <sys/param.h>
 43#include <ctype.h>
 44
 45#include "makefs.h"
 46#include "cd9660.h"
 47
 48#if defined(__RCSID) && !defined(__lint)
 49__RCSID("$NetBSD: cd9660_strings.c,v 1.6 2015/12/24 15:52:37 christos Exp $");
 50#endif  /* !__lint */
 51
 52
 53void
 54cd9660_uppercase_characters(char *str, size_t len)
 55{
 56	size_t p;
 57
 58	for (p = 0; p < len; p++) {
 59		if (islower((unsigned char)str[p]) )
 60			str[p] -= 32;
 61	}
 62}
 63
 64static inline int
 65cd9660_is_d_char(char c)
 66{
 67	return (isupper((unsigned char)c)
 68		|| c == '_'
 69		|| (c >= '0' && c <= '9'));
 70}
 71
 72static inline int
 73cd9660_is_a_char(char c)
 74{
 75	return (isupper((unsigned char)c)
 76			|| c == '_'
 77			|| (c >= '%' && c <= '?')
 78			|| (c >= ' ' && c <= '\"'));
 79}
 80
 81/*
 82 * Test a string to see if it is composed of valid a characters
 83 * @param const char* The string to test
 84 * @returns int 1 if valid, 2 if valid if characters are converted to
 85 *              upper case, 0 otherwise
 86 */
 87int
 88cd9660_valid_a_chars(const char *str)
 89{
 90	const char *c = str;
 91	int upperFound = 0;
 92
 93	while ((*c) != '\0') {
 94		if (!(cd9660_is_a_char(*c))) {
 95			if (islower((unsigned char)*c) )
 96				upperFound = 1;
 97			else
 98				return 0;
 99		}
100		c++;
101	}
102	return upperFound + 1;
103}
104
105/*
106 * Test a string to see if it is composed of valid d characters
107 * @param const char* The string to test
108 * @returns int 1 if valid, 2 if valid if characters are converted to
109 *                upper case, 0 otherwise
110 */
111int
112cd9660_valid_d_chars(const char *str)
113{
114	const char *c=str;
115	int upperFound = 0;
116
117	while ((*c) != '\0') {
118		if (!(cd9660_is_d_char(*c))) {
119			if (islower((unsigned char)*c) )
120				upperFound = 1;
121			else
122				return 0;
123		}
124		c++;
125	}
126	return upperFound + 1;
127}