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). 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * 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 copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94 39 * $Id: cd9660_util.c,v 1.9 1997/02/22 09:38:50 peter Exp $ 40 */ 41 42 #include <sys/param.h> 43 #include <sys/mount.h> 44 #include <sys/vnode.h> 45 46 #include <isofs/cd9660/iso.h> 47 48 /* 49 * translate and compare a filename 50 * Note: Version number plus ';' may be omitted. 51 */ 52 int 53 isofncmp(fn, fnlen, isofn, isolen) 54 u_char *fn; 55 int fnlen; 56 u_char *isofn; 57 int isolen; 58 { 59 int i, j; 60 unsigned char c; 61 62 while (--fnlen >= 0) { 63 if (--isolen < 0) 64 return *fn; 65 if ((c = *isofn++) == ';') { 66 switch (*fn++) { 67 default: 68 return *--fn; 69 case 0: 70 return 0; 71 case ';': 72 break; 73 } 74 for (i = 0; --fnlen >= 0; i = i * 10 + *fn++ - '0') { 75 if (*fn < '0' || *fn > '9') { 76 return -1; 77 } 78 } 79 for (j = 0; --isolen >= 0; j = j * 10 + *isofn++ - '0'); 80 return i - j; 81 } 82 if (c != *fn) { 83 if (c >= 'A' && c <= 'Z') { 84 if (c + ('a' - 'A') != *fn) { 85 if (*fn >= 'a' && *fn <= 'z') 86 return *fn - ('a' - 'A') - c; 87 else 88 return *fn - c; 89 } 90 } else 91 return *fn - c; 92 } 93 fn++; 94 } 95 if (isolen > 0) { 96 switch (*isofn) { 97 default: 98 return -1; 99 case '.': 100 if (isofn[1] != ';') 101 return -1; 102 case ';': 103 return 0; 104 } 105 } 106 return 0; 107 } 108 109 /* 110 * translate a filename 111 */ 112 void 113 isofntrans(infn, infnlen, outfn, outfnlen, original, assoc) 114 u_char *infn; 115 int infnlen; 116 u_char *outfn; 117 u_short *outfnlen; 118 int original; 119 int assoc; 120 { 121 int fnidx = 0; 122 123 if (assoc) { 124 *outfn++ = ASSOCCHAR; 125 fnidx++; 126 infnlen++; 127 } 128 for (; fnidx < infnlen; fnidx++) { 129 char c = *infn++; 130 131 if (!original && c >= 'A' && c <= 'Z') 132 *outfn++ = c + ('a' - 'A'); 133 else if (!original && c == '.' && *infn == ';') 134 break; 135 else if (!original && c == ';') 136 break; 137 else 138 *outfn++ = c; 139 } 140 *outfnlen = fnidx; 141 } 142