usr.sbin/makefs/cd9660/cd9660_strings.c

   1 /*      $NetBSD: cd9660_strings.c,v 1.5 2011/03/23 13:11:51 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 1.5 2011/03/23 13:11:51 christos Exp $");
  50 #endif  /* !__lint */
  51
  52
  53 void
  54 cd9660_uppercase_characters(char *str, int len)
  55 {
  56         int p;
  57
  58         for (p = 0; p < len; p++) {
  59                 if (islower((unsigned char)str[p]) )
  60                         str[p] -= 32;
  61         }
  62 }
  63
  64 static inline int
  65 cd9660_is_d_char(char c)
  66 {
  67         return (isupper((unsigned char)c)
  68                 || c == '_'
  69                 || (c >= '0' && c <= '9'));
  70 }
  71
  72 static inline int
  73 cd9660_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  */
  87 int
  88 cd9660_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  */
 111 int
 112 cd9660_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 }