246 lines
6.3 KiB
C
246 lines
6.3 KiB
C
/*-
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* Copyright (c) 1994
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley
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* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
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* Support code is derived from software contributed to Berkeley
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* by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by
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* Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de).
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mount.h>
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#include <sys/vnode.h>
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#include <sys/iconv.h>
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#include <fs/cd9660/iso.h>
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#include <fs/cd9660/cd9660_mount.h>
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extern struct iconv_functions *cd9660_iconv;
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/*
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* Get one character out of an iso filename
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* Obey joliet_level
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* Return number of bytes consumed
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*/
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int
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isochar(isofn, isoend, joliet_level, c, clen, flags, handle)
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u_char *isofn;
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u_char *isoend;
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int joliet_level;
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u_short *c;
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int *clen;
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int flags;
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void *handle;
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{
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size_t i, j, len;
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char inbuf[3], outbuf[3], *inp, *outp;
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*c = *isofn++;
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if (clen) *clen = 1;
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if (joliet_level == 0 || isofn == isoend)
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/* (00) and (01) are one byte in Joliet, too */
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return 1;
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if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
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i = j = len = 2;
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inbuf[0]=(char)*(isofn - 1);
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inbuf[1]=(char)*isofn;
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inbuf[2]='\0';
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inp = inbuf;
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outp = outbuf;
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cd9660_iconv->convchr(handle, __DECONST(const char **, &inp), &i,
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&outp, &j);
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len -= j;
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if (clen) *clen = len;
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*c = '\0';
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while(len--)
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*c |= (*(outp - len - 1) & 0xff) << (len << 3);
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} else {
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switch (*c) {
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default:
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*c = '?';
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break;
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case '\0':
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*c = *isofn;
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break;
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}
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}
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return 2;
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}
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/*
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* translate and compare a filename
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* returns (fn - isofn)
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* Note: Version number plus ';' may be omitted.
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*/
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int
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isofncmp(fn, fnlen, isofn, isolen, joliet_level, flags, handle, lhandle)
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u_char *fn;
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int fnlen;
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u_char *isofn;
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int isolen;
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int joliet_level;
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int flags;
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void *handle;
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void *lhandle;
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{
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int i, j;
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u_short c, d;
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u_char *fnend = fn + fnlen, *isoend = isofn + isolen;
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for (; fn < fnend; ) {
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d = sgetrune(fn, fnend - fn, __DECONST(const char **, &fn),
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flags, lhandle);
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if (isofn == isoend)
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return d;
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isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
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if (c == ';') {
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if (d != ';')
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return d;
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for (i = 0; fn < fnend; i = i * 10 + *fn++ - '0') {
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if (*fn < '0' || *fn > '9') {
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return -1;
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}
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}
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for (j = 0; isofn != isoend; j = j * 10 + c - '0')
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isofn += isochar(isofn, isoend,
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joliet_level, &c,
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NULL, flags, handle);
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return i - j;
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}
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if (c != d) {
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if (c >= 'A' && c <= 'Z') {
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if (c + ('a' - 'A') != d) {
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if (d >= 'a' && d <= 'z')
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return d - ('a' - 'A') - c;
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else
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return d - c;
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}
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} else
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return d - c;
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}
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}
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if (isofn != isoend) {
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isofn += isochar(isofn, isoend, joliet_level, &c, NULL, flags, handle);
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switch (c) {
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default:
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return -c;
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case '.':
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if (isofn != isoend) {
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isochar(isofn, isoend, joliet_level, &c,
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NULL, flags, handle);
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if (c == ';')
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return 0;
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}
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return -1;
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case ';':
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return 0;
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}
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}
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return 0;
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}
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/*
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* translate a filename of length > 0
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*/
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void
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isofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level, flags, handle)
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u_char *infn;
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int infnlen;
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u_char *outfn;
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u_short *outfnlen;
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int original;
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int assoc;
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int joliet_level;
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int flags;
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void *handle;
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{
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u_short c, d = '\0';
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u_char *outp = outfn, *infnend = infn + infnlen;
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int clen;
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if (assoc) {
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*outp++ = ASSOCCHAR;
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}
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for (; infn != infnend; ) {
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infn += isochar(infn, infnend, joliet_level, &c, &clen, flags, handle);
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if (!original && !joliet_level && c >= 'A' && c <= 'Z')
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c += ('a' - 'A');
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else if (!original && c == ';') {
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outp -= (d == '.');
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break;
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}
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d = c;
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while(clen--)
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*outp++ = c >> (clen << 3);
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}
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*outfnlen = outp - outfn;
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}
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/*
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* same as sgetrune(3)
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*/
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u_short
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sgetrune(string, n, result, flags, handle)
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const char *string;
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size_t n;
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char const **result;
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int flags;
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void *handle;
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{
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size_t i, j, len;
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char outbuf[3], *outp;
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u_short c = '\0';
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len = i = (n < 2) ? n : 2;
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j = 2;
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outp = outbuf;
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if (flags & ISOFSMNT_KICONV && cd9660_iconv) {
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cd9660_iconv->convchr(handle, (const char **)&string,
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&i, &outp, &j);
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len -= i;
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} else {
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len = 1;
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string++;
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}
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if (result) *result = string;
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while(len--) c |= (*(string - len - 1) & 0xff) << (len << 3);
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return (c);
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}
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