Retro68/hfsutils/copyin.c

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2012-03-29 08:28:43 +00:00
/*
* hfsutils - tools for reading and writing Macintosh HFS volumes
* Copyright (C) 1996-1998 Robert Leslie
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: copyin.c,v 1.8 1998/11/02 22:08:25 rob Exp $
*/
# ifdef HAVE_CONFIG_H
# include "config.h"
# endif
# ifdef HAVE_FCNTL_H
# include <fcntl.h>
# else
int open(const char *, int, ...);
# endif
# ifdef HAVE_UNISTD_H
# include <unistd.h>
# else
int dup(int);
# endif
# include <stdlib.h>
# include <string.h>
# include <errno.h>
# include "hfs.h"
# include "data.h"
# include "copyin.h"
# include "charset.h"
# include "binhex.h"
# include "crc.h"
const char *cpi_error = "no error";
extern int errno;
# define ERROR(code, str) (cpi_error = (str), errno = (code))
# define MACB_BLOCKSZ 128
# define TEXT_TYPE "TEXT"
# define TEXT_CREA "UNIX"
# define RAW_TYPE "????"
# define RAW_CREA "UNIX"
/* Copy routines =========================================================== */
/*
* NAME: fork->macb()
* DESCRIPTION: copy a single fork for MacBinary II
*/
static
int fork_macb(int ifile, hfsfile *ofile, unsigned long size)
{
char buf[HFS_BLOCKSZ * 4];
unsigned long chunk, bytes;
while (size)
{
chunk = (size < sizeof(buf)) ?
(size + (MACB_BLOCKSZ - 1)) & ~(MACB_BLOCKSZ - 1) : sizeof(buf);
bytes = read(ifile, buf, chunk);
if (bytes == (unsigned long) -1)
{
ERROR(errno, "error reading data");
return -1;
}
else if (bytes != chunk)
{
ERROR(EIO, "read incomplete chunk");
return -1;
}
chunk = (size > bytes) ? bytes : size;
bytes = hfs_write(ofile, buf, chunk);
if (bytes == (unsigned long) -1)
{
ERROR(errno, hfs_error);
return -1;
}
else if (bytes != chunk)
{
ERROR(EIO, "wrote incomplete chunk");
return -1;
}
size -= chunk;
}
return 0;
}
/*
* NAME: do_macb()
* DESCRIPTION: perform copy using MacBinary II translation
*/
static
int do_macb(int ifile, hfsfile *ofile,
unsigned long dsize, unsigned long rsize)
{
if (hfs_setfork(ofile, 0) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_macb(ifile, ofile, dsize) == -1)
return -1;
if (hfs_setfork(ofile, 1) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_macb(ifile, ofile, rsize) == -1)
return -1;
return 0;
}
/*
* NAME: fork->binh()
* DESCRIPTION: copy a single fork for BinHex
*/
static
int fork_binh(hfsfile *ofile, unsigned long size)
{
char buf[HFS_BLOCKSZ * 4];
long chunk, bytes;
while (size)
{
chunk = (size > sizeof(buf)) ? sizeof(buf) : size;
bytes = bh_read(buf, chunk);
if (bytes == -1)
{
ERROR(errno, bh_error);
return -1;
}
else if (bytes != chunk)
{
ERROR(EIO, "read incomplete chunk");
return -1;
}
bytes = hfs_write(ofile, buf, chunk);
if (bytes == -1)
{
ERROR(errno, hfs_error);
return -1;
}
else if (bytes != chunk)
{
ERROR(EIO, "wrote incomplete chunk");
return -1;
}
size -= chunk;
}
if (bh_readcrc() == -1)
{
ERROR(errno, bh_error);
return -1;
}
return 0;
}
/*
* NAME: do_binh()
* DESCRIPTION: perform copy using BinHex translation
*/
static
int do_binh(hfsfile *ofile, unsigned long dsize, unsigned long rsize)
{
if (hfs_setfork(ofile, 0) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_binh(ofile, dsize) == -1)
return -1;
if (hfs_setfork(ofile, 1) == -1)
{
ERROR(errno, hfs_error);
return -1;
}
if (fork_binh(ofile, rsize) == -1)
return -1;
return 0;
}
/*
* NAME: do_text()
* DESCRIPTION: perform copy using text translation
*/
static
int do_text(int ifile, hfsfile *ofile)
{
char buf[HFS_BLOCKSZ * 4], *ptr;
long chunk, bytes;
int len;
while (1)
{
chunk = read(ifile, buf, sizeof(buf));
if (chunk == -1)
{
ERROR(errno, "error reading source file");
return -1;
}
else if (chunk == 0)
break;
for (ptr = buf; ptr < buf + chunk; ++ptr)
{
if (*ptr == '\n')
*ptr = '\r';
}
len = chunk;
ptr = cs_macroman(buf, &len);
if (ptr == 0)
{
ERROR(ENOMEM, 0);
return -1;
}
bytes = hfs_write(ofile, ptr, len);
free(ptr);
if (bytes == -1)
{
ERROR(errno, hfs_error);
return -1;
}
else if (bytes != len)
{
ERROR(EIO, "wrote incomplete chunk");
return -1;
}
}
return 0;
}
/*
* NAME: do_raw()
* DESCRIPTION: perform copy using no translation
*/
static
int do_raw(int ifile, hfsfile *ofile)
{
char buf[HFS_BLOCKSZ * 4];
long chunk, bytes;
while (1)
{
chunk = read(ifile, buf, sizeof(buf));
if (chunk == -1)
{
ERROR(errno, "error reading source file");
return -1;
}
else if (chunk == 0)
break;
bytes = hfs_write(ofile, buf, chunk);
if (bytes == -1)
{
ERROR(errno, hfs_error);
return -1;
}
else if (bytes != chunk)
{
ERROR(EIO, "wrote incomplete chunk");
return -1;
}
}
return 0;
}
/* Utility Routines ======================================================== */
/*
* NAME: opensrc()
* DESCRIPTION: open the source file; set hint for destination filename
*/
static
int opensrc(const char *srcname, const char **dsthint, const char *ext,
int binary)
{
int fd, len;
static char name[HFS_MAX_FLEN + 1];
const char *cptr;
char *ptr;
if (strcmp(srcname, "-") == 0)
{
fd = dup(STDIN_FILENO);
srcname = "";
}
else
fd = open(srcname, O_RDONLY);
if (fd == -1)
{
ERROR(errno, "error opening source file");
return -1;
}
cptr = strrchr(srcname, '/');
if (cptr == 0)
cptr = srcname;
else
++cptr;
if (ext == 0)
len = strlen(cptr);
else
{
ext = strstr(cptr, ext);
if (ext == 0)
len = strlen(cptr);
else
len = ext - cptr;
}
if (len > HFS_MAX_FLEN)
len = HFS_MAX_FLEN;
memcpy(name, cptr, len);
name[len] = 0;
for (ptr = name; *ptr; ++ptr)
{
switch (*ptr)
{
case ':':
*ptr = '-';
break;
case '_':
*ptr = ' ';
break;
}
}
*dsthint = name;
return fd;
}
/*
* NAME: opendst()
* DESCRIPTION: open the destination file
*/
static
hfsfile *opendst(hfsvol *vol, const char *dstname, const char *hint,
const char *type, const char *creator)
{
hfsdirent ent;
hfsfile *file;
unsigned long cwd;
if (hfs_stat(vol, dstname, &ent) != -1 &&
(ent.flags & HFS_ISDIR))
{
cwd = hfs_getcwd(vol);
if (hfs_setcwd(vol, ent.cnid) == -1)
{
ERROR(errno, hfs_error);
return 0;
}
dstname = hint;
}
hfs_delete(vol, dstname);
file = hfs_create(vol, dstname, type, creator);
if (file == 0)
{
ERROR(errno, hfs_error);
if (dstname == hint)
hfs_setcwd(vol, cwd);
return 0;
}
if (dstname == hint)
{
if (hfs_setcwd(vol, cwd) == -1)
{
ERROR(errno, hfs_error);
hfs_close(file);
return 0;
}
}
return file;
}
/*
* NAME: closefiles()
* DESCRIPTION: close source and destination files
*/
static
void closefiles(int ifile, hfsfile *ofile, int *result)
{
if (ofile && hfs_close(ofile) == -1 && *result == 0)
{
ERROR(errno, hfs_error);
*result = -1;
}
if (close(ifile) == -1 && *result == 0)
{
ERROR(errno, "error closing source file");
*result = -1;
}
}
/* Interface Routines ====================================================== */
/*
* NAME: cpi->macb()
* DESCRIPTION: copy a UNIX file to an HFS file using MacBinary II translation
*/
int cpi_macb(const char *srcname, hfsvol *vol, const char *dstname)
{
int ifile, result = 0;
hfsfile *ofile;
hfsdirent ent;
const char *dsthint;
char type[5], creator[5];
unsigned char buf[MACB_BLOCKSZ];
unsigned short crc;
unsigned long dsize, rsize;
ifile = opensrc(srcname, &dsthint, ".bin", 1);
if (ifile == -1)
return -1;
if (read(ifile, buf, MACB_BLOCKSZ) < MACB_BLOCKSZ)
{
ERROR(errno, "error reading MacBinary file header");
close(ifile);
return -1;
}
if (buf[0] != 0 || buf[74] != 0)
{
ERROR(EINVAL, "invalid MacBinary file header");
close(ifile);
return -1;
}
crc = d_getuw(&buf[124]);
if (crc_macb(buf, 124, 0x0000) != crc)
{
/* (buf[82] == 0) => MacBinary I? */
ERROR(EINVAL, "unknown, unsupported, or corrupt MacBinary file");
close(ifile);
return -1;
}
if (buf[123] > 129)
{
ERROR(EINVAL, "unsupported MacBinary file version");
close(ifile);
return -1;
}
if (buf[1] < 1 || buf[1] > 63 ||
buf[2 + buf[1]] != 0)
{
ERROR(EINVAL, "invalid MacBinary file header (bad file name)");
close(ifile);
return -1;
}
dsize = d_getul(&buf[83]);
rsize = d_getul(&buf[87]);
if (dsize > 0x7fffffff || rsize > 0x7fffffff)
{
ERROR(EINVAL, "invalid MacBinary file header (bad file length)");
close(ifile);
return -1;
}
dsthint = (char *) &buf[2];
memcpy(type, &buf[65], 4);
memcpy(creator, &buf[69], 4);
type[4] = creator[4] = 0;
ofile = opendst(vol, dstname, dsthint, type, creator);
if (ofile == 0)
{
close(ifile);
return -1;
}
result = do_macb(ifile, ofile, dsize, rsize);
if (result == 0 && hfs_fstat(ofile, &ent) == -1)
{
ERROR(errno, hfs_error);
result = -1;
}
ent.fdflags = (buf[73] << 8 | buf[101]) &
~(HFS_FNDR_ISONDESK | HFS_FNDR_HASBEENINITED | HFS_FNDR_RESERVED);
ent.crdate = d_ltime(d_getul(&buf[91]));
ent.mddate = d_ltime(d_getul(&buf[95]));
if (result == 0 && hfs_fsetattr(ofile, &ent) == -1)
{
ERROR(errno, hfs_error);
result = -1;
}
closefiles(ifile, ofile, &result);
return result;
}
/*
* NAME: binhx()
* DESCRIPTION: auxiliary BinHex routine
*/
static
int binhx(char *fname, char *type, char *creator, short *fdflags,
unsigned long *dsize, unsigned long *rsize)
{
int len;
unsigned char byte, word[2], lword[4];
if (bh_read(&byte, 1) < 1)
{
ERROR(errno, bh_error);
return -1;
}
len = (unsigned char) byte;
if (len < 1 || len > HFS_MAX_FLEN)
{
ERROR(EINVAL, "invalid BinHex file header (bad file name)");
return -1;
}
if (bh_read(fname, len + 1) < len + 1)
{
ERROR(errno, bh_error);
return -1;
}
if (fname[len] != 0)
{
ERROR(EINVAL, "invalid BinHex file header (bad file name)");
return -1;
}
if (bh_read(type, 4) < 4 ||
bh_read(creator, 4) < 4 ||
bh_read(word, 2) < 2)
{
ERROR(errno, bh_error);
return -1;
}
*fdflags = d_getsw(word);
if (bh_read(lword, 4) < 4)
{
ERROR(errno, bh_error);
return -1;
}
*dsize = d_getul(lword);
if (bh_read(lword, 4) < 4)
{
ERROR(errno, bh_error);
return -1;
}
*rsize = d_getul(lword);
if (*dsize > 0x7fffffff || *rsize > 0x7fffffff)
{
ERROR(EINVAL, "invalid BinHex file header (bad file length)");
return -1;
}
if (bh_readcrc() == -1)
{
ERROR(errno, bh_error);
return -1;
}
return 0;
}
/*
* NAME: cpi->binh()
* DESCRIPTION: copy a UNIX file to an HFS file using BinHex translation
*/
int cpi_binh(const char *srcname, hfsvol *vol, const char *dstname)
{
int ifile, result;
hfsfile *ofile;
hfsdirent ent;
const char *dsthint;
char fname[HFS_MAX_FLEN + 1], type[5], creator[5];
short fdflags;
unsigned long dsize, rsize;
ifile = opensrc(srcname, &dsthint, ".hqx", 0);
if (ifile == -1)
return -1;
if (bh_open(ifile) == -1)
{
ERROR(errno, bh_error);
close(ifile);
return -1;
}
if (binhx(fname, type, creator, &fdflags, &dsize, &rsize) == -1)
{
bh_close();
close(ifile);
return -1;
}
dsthint = fname;
ofile = opendst(vol, dstname, dsthint, type, creator);
if (ofile == 0)
{
bh_close();
close(ifile);
return -1;
}
result = do_binh(ofile, dsize, rsize);
if (bh_close() == -1 && result == 0)
{
ERROR(errno, bh_error);
result = -1;
}
if (result == 0 && hfs_fstat(ofile, &ent) == -1)
{
ERROR(errno, hfs_error);
result = -1;
}
ent.fdflags = fdflags &
~(HFS_FNDR_ISONDESK | HFS_FNDR_HASBEENINITED | HFS_FNDR_ISINVISIBLE);
if (result == 0 && hfs_fsetattr(ofile, &ent) == -1)
{
ERROR(errno, hfs_error);
result = -1;
}
closefiles(ifile, ofile, &result);
return result;
}
/*
* NAME: cpi->text()
* DESCRIPTION: copy a UNIX file to an HFS file using text translation
*/
int cpi_text(const char *srcname, hfsvol *vol, const char *dstname)
{
int ifile, result = 0;
hfsfile *ofile;
const char *dsthint;
ifile = opensrc(srcname, &dsthint, ".txt", 0);
if (ifile == -1)
return -1;
ofile = opendst(vol, dstname, dsthint, TEXT_TYPE, TEXT_CREA);
if (ofile == 0)
{
close(ifile);
return -1;
}
result = do_text(ifile, ofile);
closefiles(ifile, ofile, &result);
return result;
}
/*
* NAME: cpi->raw()
* DESCRIPTION: copy a UNIX file to the data fork of an HFS file
*/
int cpi_raw(const char *srcname, hfsvol *vol, const char *dstname)
{
int ifile, result = 0;
hfsfile *ofile;
const char *dsthint;
ifile = opensrc(srcname, &dsthint, 0, 1);
if (ifile == -1)
return -1;
ofile = opendst(vol, dstname, dsthint, RAW_TYPE, RAW_CREA);
if (ofile == 0)
{
close(ifile);
return -1;
}
result = do_raw(ifile, ofile);
closefiles(ifile, ofile, &result);
return result;
}