cd9660_util.c revision 120492
11541Srgrimes/*- 21541Srgrimes * Copyright (c) 1994 31541Srgrimes * The Regents of the University of California. All rights reserved. 41541Srgrimes * 51541Srgrimes * This code is derived from software contributed to Berkeley 61541Srgrimes * by Pace Willisson (pace@blitz.com). The Rock Ridge Extension 71541Srgrimes * Support code is derived from software contributed to Berkeley 845773Sdcs * by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by 945773Sdcs * Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de). 101541Srgrimes * 111541Srgrimes * Redistribution and use in source and binary forms, with or without 121541Srgrimes * modification, are permitted provided that the following conditions 131541Srgrimes * are met: 141541Srgrimes * 1. Redistributions of source code must retain the above copyright 151541Srgrimes * notice, this list of conditions and the following disclaimer. 161541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 171541Srgrimes * notice, this list of conditions and the following disclaimer in the 181541Srgrimes * documentation and/or other materials provided with the distribution. 191541Srgrimes * 3. All advertising materials mentioning features or use of this software 201541Srgrimes * must display the following acknowledgement: 211541Srgrimes * This product includes software developed by the University of 221541Srgrimes * California, Berkeley and its contributors. 231541Srgrimes * 4. Neither the name of the University nor the names of its contributors 241541Srgrimes * may be used to endorse or promote products derived from this software 251541Srgrimes * without specific prior written permission. 261541Srgrimes * 271541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 281541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 291541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 301541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 311541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 321541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 331541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 341541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 351541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 361541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 371541Srgrimes * SUCH DAMAGE. 381541Srgrimes * 3922521Sdyson * @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94 401541Srgrimes */ 411541Srgrimes 42116181Sobrien#include <sys/cdefs.h> 43116181Sobrien__FBSDID("$FreeBSD: head/sys/fs/cd9660/cd9660_util.c 120492 2003-09-26 20:26:25Z fjoe $"); 44116181Sobrien 451541Srgrimes#include <sys/param.h> 4696009Sjeff#include <sys/systm.h> 471541Srgrimes#include <sys/mount.h> 481541Srgrimes#include <sys/vnode.h> 49120492Sfjoe#include <sys/iconv.h> 501541Srgrimes 511541Srgrimes#include <isofs/cd9660/iso.h> 52120492Sfjoe#include <isofs/cd9660/cd9660_mount.h> 531541Srgrimes 54120492Sfjoeextern struct iconv_functions *cd9660_iconv; 5572435Ssobomax 5672435Ssobomax/* 5745773Sdcs * Get one character out of an iso filename 5845773Sdcs * Obey joliet_level 5945773Sdcs * Return number of bytes consumed 6045773Sdcs */ 6145773Sdcsint 62120492Sfjoeisochar(isofn, isoend, joliet_level, c, clen, flags, handle) 6345773Sdcs u_char *isofn; 6445773Sdcs u_char *isoend; 6545773Sdcs int joliet_level; 66120492Sfjoe u_short *c; 67120492Sfjoe int *clen; 68120492Sfjoe int flags; 69120492Sfjoe void *handle; 7045773Sdcs{ 71120492Sfjoe size_t i, j, len; 72120492Sfjoe char inbuf[3], outbuf[3], *inp, *outp; 73120492Sfjoe 7445773Sdcs *c = *isofn++; 75120492Sfjoe if (clen) *clen = 1; 7645773Sdcs if (joliet_level == 0 || isofn == isoend) 7745773Sdcs /* (00) and (01) are one byte in Joliet, too */ 7845773Sdcs return 1; 7945773Sdcs 80120492Sfjoe if (flags & ISOFSMNT_KICONV && cd9660_iconv) { 81120492Sfjoe i = j = len = 2; 82120492Sfjoe inbuf[0]=(char)*(isofn - 1); 83120492Sfjoe inbuf[1]=(char)*isofn; 84120492Sfjoe inbuf[2]='\0'; 85120492Sfjoe inp = inbuf; 86120492Sfjoe outp = outbuf; 87120492Sfjoe cd9660_iconv->convchr(handle, (const char **)&inp, &i, &outp, &j); 88120492Sfjoe len -= j; 89120492Sfjoe if (clen) *clen = len; 90120492Sfjoe *c = '\0'; 91120492Sfjoe while(len--) 92120492Sfjoe *c |= (*(outp - len - 1) & 0xff) << (len << 3); 93120492Sfjoe } else { 94120492Sfjoe switch (*c) { 95120492Sfjoe default: 96120492Sfjoe *c = '?'; 97120492Sfjoe break; 98120492Sfjoe case '\0': 99120492Sfjoe *c = *isofn; 100120492Sfjoe break; 101120492Sfjoe } 10245773Sdcs } 10372435Ssobomax 10445773Sdcs return 2; 10545773Sdcs} 10645773Sdcs 10745773Sdcs/* 1081541Srgrimes * translate and compare a filename 10945773Sdcs * returns (fn - isofn) 1101541Srgrimes * Note: Version number plus ';' may be omitted. 1111541Srgrimes */ 1121541Srgrimesint 113120492Sfjoeisofncmp(fn, fnlen, isofn, isolen, joliet_level, flags, handle, lhandle) 11422593Sbde u_char *fn; 11522593Sbde int fnlen; 11622593Sbde u_char *isofn; 11722593Sbde int isolen; 11845773Sdcs int joliet_level; 119120492Sfjoe int flags; 120120492Sfjoe void *handle; 121120492Sfjoe void *lhandle; 1221541Srgrimes{ 1231541Srgrimes int i, j; 124120492Sfjoe u_short c, d; 125120492Sfjoe u_char *fnend = fn + fnlen, *isoend = isofn + isolen; 1268876Srgrimes 127120492Sfjoe for (; fn < fnend; ) { 128120492Sfjoe d = sgetrune(fn, fnend - fn, (char const **)&fn, flags, lhandle); 12945773Sdcs if (isofn == isoend) 130120492Sfjoe return d; 131120492Sfjoe isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle); 13245773Sdcs if (c == ';') { 133120492Sfjoe if (d != ';') 134120492Sfjoe return d; 135120492Sfjoe for (i = 0; fn < fnend; i = i * 10 + *fn++ - '0') { 1361541Srgrimes if (*fn < '0' || *fn > '9') { 1371541Srgrimes return -1; 1381541Srgrimes } 1391541Srgrimes } 14045773Sdcs for (j = 0; isofn != isoend; j = j * 10 + c - '0') 14145773Sdcs isofn += isochar(isofn, isoend, 142120492Sfjoe joliet_level, &c, 143120492Sfjoe NULL, flags, handle); 1441541Srgrimes return i - j; 1451541Srgrimes } 146120492Sfjoe if (c != d) { 1471541Srgrimes if (c >= 'A' && c <= 'Z') { 148120492Sfjoe if (c + ('a' - 'A') != d) { 149120492Sfjoe if (d >= 'a' && d <= 'z') 150120492Sfjoe return d - ('a' - 'A') - c; 1511541Srgrimes else 152120492Sfjoe return d - c; 1531541Srgrimes } 1541541Srgrimes } else 155120492Sfjoe return d - c; 1561541Srgrimes } 1571541Srgrimes } 15845773Sdcs if (isofn != isoend) { 159120492Sfjoe isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle); 16045773Sdcs switch (c) { 1611541Srgrimes default: 16245773Sdcs return -c; 16345773Sdcs case '.': 16445773Sdcs if (isofn != isoend) { 165120492Sfjoe isochar(isofn, isoend, joliet_level, &c, 166120492Sfjoe NULL, flags, handle); 16745773Sdcs if (c == ';') 16845773Sdcs return 0; 16945773Sdcs } 1701541Srgrimes return -1; 1711541Srgrimes case ';': 1721541Srgrimes return 0; 1731541Srgrimes } 1741541Srgrimes } 1751541Srgrimes return 0; 1761541Srgrimes} 1771541Srgrimes 1781541Srgrimes/* 17945773Sdcs * translate a filename of length > 0 1801541Srgrimes */ 1811541Srgrimesvoid 182120492Sfjoeisofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level, flags, handle) 18322593Sbde u_char *infn; 18422521Sdyson int infnlen; 18522593Sbde u_char *outfn; 18622521Sdyson u_short *outfnlen; 18722521Sdyson int original; 18822521Sdyson int assoc; 18945773Sdcs int joliet_level; 190120492Sfjoe int flags; 191120492Sfjoe void *handle; 1921541Srgrimes{ 193120492Sfjoe u_short c, d = '\0'; 194120492Sfjoe u_char *outp = outfn, *infnend = infn + infnlen; 195120492Sfjoe int clen; 1968876Srgrimes 1971541Srgrimes if (assoc) { 198120492Sfjoe *outp++ = ASSOCCHAR; 1991541Srgrimes } 200120492Sfjoe for (; infn != infnend; ) { 201120492Sfjoe infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle); 2028876Srgrimes 20346669Sdcs if (!original && !joliet_level && c >= 'A' && c <= 'Z') 204120492Sfjoe c += ('a' - 'A'); 20545773Sdcs else if (!original && c == ';') { 206120492Sfjoe outp -= (d == '.'); 2071541Srgrimes break; 208120492Sfjoe } 20945773Sdcs d = c; 210120492Sfjoe while(clen--) 211120492Sfjoe *outp++ = c >> (clen << 3); 2121541Srgrimes } 213120492Sfjoe *outfnlen = outp - outfn; 2141541Srgrimes} 215120492Sfjoe 216120492Sfjoe/* 217120492Sfjoe * same as sgetrune(3) 218120492Sfjoe */ 219120492Sfjoeu_short 220120492Sfjoesgetrune(string, n, result, flags, handle) 221120492Sfjoe const char *string; 222120492Sfjoe size_t n; 223120492Sfjoe char const **result; 224120492Sfjoe int flags; 225120492Sfjoe void *handle; 226120492Sfjoe{ 227120492Sfjoe size_t i, j, len; 228120492Sfjoe char outbuf[3], *outp; 229120492Sfjoe u_short c = '\0'; 230120492Sfjoe 231120492Sfjoe len = i = (n < 2) ? n : 2; 232120492Sfjoe j = 2; 233120492Sfjoe outp = outbuf; 234120492Sfjoe 235120492Sfjoe if (flags & ISOFSMNT_KICONV && cd9660_iconv) { 236120492Sfjoe cd9660_iconv->convchr(handle, (const char **)&string, 237120492Sfjoe &i, &outp, &j); 238120492Sfjoe len -= i; 239120492Sfjoe } else { 240120492Sfjoe len = 1; 241120492Sfjoe string++; 242120492Sfjoe } 243120492Sfjoe 244120492Sfjoe if (result) *result = string; 245120492Sfjoe while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3); 246120492Sfjoe return (c); 247120492Sfjoe} 248