1 /*- 2 * Copyright (c) 1994 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley 6 * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 7 * Support code is derived from software contributed to Berkeley 8 * by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by 9 * Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de). 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. All advertising materials mentioning features or use of this software 20 * must display the following acknowledgement: 21 * This product includes software developed by the University of 22 * California, Berkeley and its contributors. 23 * 4. Neither the name of the University nor the names of its contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 31 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 35 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 36 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 * SUCH DAMAGE. 38 * 39 * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94 40 * $FreeBSD$ 41 */ 42 43 #include <sys/param.h> 44 #include <sys/mount.h> 45 #include <sys/vnode.h> 46 47 #include <isofs/cd9660/iso.h> 48 49 /* 50 * Get one character out of an iso filename 51 * Obey joliet_level 52 * Return number of bytes consumed 53 */ 54 int 55 isochar(isofn, isoend, joliet_level, c) 56 u_char *isofn; 57 u_char *isoend; 58 int joliet_level; 59 u_char *c; 60 { 61 *c = *isofn++; 62 if (joliet_level == 0 || isofn == isoend) 63 /* (00) and (01) are one byte in Joliet, too */ 64 return 1; 65 66 /* No Unicode support yet :-( */ 67 switch (*c) { 68 default: 69 *c = '?'; 70 break; 71 case '\0': 72 *c = *isofn; 73 break; 74 } 75 return 2; 76 } 77 78 /* 79 * translate and compare a filename 80 * returns (fn - isofn) 81 * Note: Version number plus ';' may be omitted. 82 */ 83 int 84 isofncmp(fn, fnlen, isofn, isolen, joliet_level) 85 u_char *fn; 86 int fnlen; 87 u_char *isofn; 88 int isolen; 89 int joliet_level; 90 { 91 int i, j; 92 u_char c, *fnend = fn + fnlen, *isoend = isofn + isolen; 93 94 for (; fn != fnend; fn++) { 95 if (isofn == isoend) 96 return *fn; 97 isofn += isochar(isofn, isoend, joliet_level, &c); 98 if (c == ';') { 99 if (*fn++ != ';') 100 return fn[-1]; 101 for (i = 0; fn != fnend; i = i * 10 + *fn++ - '0') { 102 if (*fn < '0' || *fn > '9') { 103 return -1; 104 } 105 } 106 for (j = 0; isofn != isoend; j = j * 10 + c - '0') 107 isofn += isochar(isofn, isoend, 108 joliet_level, &c); 109 return i - j; 110 } 111 if (c != *fn) { 112 if (c >= 'A' && c <= 'Z') { 113 if (c + ('a' - 'A') != *fn) { 114 if (*fn >= 'a' && *fn <= 'z') 115 return *fn - ('a' - 'A') - c; 116 else 117 return *fn - c; 118 } 119 } else 120 return *fn - c; 121 } 122 } 123 if (isofn != isoend) { 124 isofn += isochar(isofn, isoend, joliet_level, &c); 125 switch (c) { 126 default: 127 return -c; 128 case '.': 129 if (isofn != isoend) { 130 isochar(isofn, isoend, joliet_level, &c); 131 if (c == ';') 132 return 0; 133 } 134 return -1; 135 case ';': 136 return 0; 137 } 138 } 139 return 0; 140 } 141 142 /* 143 * translate a filename of length > 0 144 */ 145 void 146 isofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level) 147 u_char *infn; 148 int infnlen; 149 u_char *outfn; 150 u_short *outfnlen; 151 int original; 152 int assoc; 153 int joliet_level; 154 { 155 int fnidx = 0; 156 u_char c, d = '\0', *infnend = infn + infnlen; 157 158 if (assoc) { 159 *outfn++ = ASSOCCHAR; 160 fnidx++; 161 } 162 for (; infn != infnend; fnidx++) { 163 infn += isochar(infn, infnend, joliet_level, &c); 164 165 if (!original && !joliet_level && c >= 'A' && c <= 'Z') 166 *outfn++ = c + ('a' - 'A'); 167 else if (!original && c == ';') { 168 fnidx -= (d == '.'); 169 break; 170 } else 171 *outfn++ = c; 172 d = c; 173 } 174 *outfnlen = fnidx; 175 } 176