/*-
* Copyright (c) 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley
* by Pace Willisson (pace@blitz.com). The Rock Ridge Extension
* Support code is derived from software contributed to Berkeley
* by Atsushi Murai (amurai@spec.co.jp). Joliet support was added by
* Joachim Kuebart (joki@kuebart.stuttgart.netsurf.de).
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)cd9660_util.c 8.3 (Berkeley) 12/5/94
* $FreeBSD$
*/
#include <sys/param.h>
#include <net/radix.h>
#include <sys/socket.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <isofs/cd9660/iso.h>
/*
* XXX: limited support for loading of Unicode
* conversion routine as a kld at a run-time.
* Should be removed when native Unicode kernel
* interfaces have been introduced.
*/
u_char (*cd9660_wchar2char)(u_int32_t wchar) = NULL;
/*
* Get one character out of an iso filename
* Obey joliet_level
* Return number of bytes consumed
*/
int
isochar(isofn, isoend, joliet_level, c)
u_char *isofn;
u_char *isoend;
int joliet_level;
u_char *c;
{
*c = *isofn++;
if (joliet_level == 0 || isofn == isoend)
/* (00) and (01) are one byte in Joliet, too */
return 1;
/* No Unicode support yet :-( */
switch (*c) {
default:
*c = '?';
break;
case '\0':
*c = *isofn;
break;
}
/* XXX: if Unicode conversion routine is loaded then use it */
if (cd9660_wchar2char != NULL)
*c = cd9660_wchar2char((*(isofn - 1) << 8) | *isofn);
return 2;
}
/*
* translate and compare a filename
* returns (fn - isofn)
* Note: Version number plus ';' may be omitted.
*/
int
isofncmp(fn, fnlen, isofn, isolen, joliet_level)
u_char *fn;
int fnlen;
u_char *isofn;
int isolen;
int joliet_level;
{
int i, j;
u_char c, *fnend = fn + fnlen, *isoend = isofn + isolen;
for (; fn != fnend; fn++) {
if (isofn == isoend)
return *fn;
isofn += isochar(isofn, isoend, joliet_level, &c);
if (c == ';') {
if (*fn++ != ';')
return fn[-1];
for (i = 0; fn != fnend; i = i * 10 + *fn++ - '0') {
if (*fn < '0' || *fn > '9') {
return -1;
}
}
for (j = 0; isofn != isoend; j = j * 10 + c - '0')
isofn += isochar(isofn, isoend,
joliet_level, &c);
return i - j;
}
if (c != *fn) {
if (c >= 'A' && c <= 'Z') {
if (c + ('a' - 'A') != *fn) {
if (*fn >= 'a' && *fn <= 'z')
return *fn - ('a' - 'A') - c;
else
return *fn - c;
}
} else
return *fn - c;
}
}
if (isofn != isoend) {
isofn += isochar(isofn, isoend, joliet_level, &c);
switch (c) {
default:
return -c;
case '.':
if (isofn != isoend) {
isochar(isofn, isoend, joliet_level, &c);
if (c == ';')
return 0;
}
return -1;
case ';':
return 0;
}
}
return 0;
}
/*
* translate a filename of length > 0
*/
void
isofntrans(infn, infnlen, outfn, outfnlen, original, assoc, joliet_level)
u_char *infn;
int infnlen;
u_char *outfn;
u_short *outfnlen;
int original;
int assoc;
int joliet_level;
{
int fnidx = 0;
u_char c, d = '\0', *infnend = infn + infnlen;
if (assoc) {
*outfn++ = ASSOCCHAR;
fnidx++;
}
for (; infn != infnend; fnidx++) {
infn += isochar(infn, infnend, joliet_level, &c);
if (!original && !joliet_level && c >= 'A' && c <= 'Z')
*outfn++ = c + ('a' - 'A');
else if (!original && c == ';') {
fnidx -= (d == '.');
break;
} else
*outfn++ = c;
d = c;
}
*outfnlen = fnidx;
}
