51369649b0
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
248 lines
6.3 KiB
C
248 lines
6.3 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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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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* 3. 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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