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/* $MirOS: contrib/hosted/fwcf/tool.c,v 1.7 2007/03/09 22:35:13 tg Exp $ */
/*-
* Copyright (c) 2006, 2007
* Thorsten Glaser <tg@mirbsd.de>
*
* Provided that these terms and disclaimer and all copyright notices
* are retained or reproduced in an accompanying document, permission
* is granted to deal in this work without restriction, including un-
* limited rights to use, publicly perform, distribute, sell, modify,
* merge, give away, or sublicence.
*
* This work is provided "AS IS" and WITHOUT WARRANTY of any kind, to
* the utmost extent permitted by applicable law, neither express nor
* implied; without malicious intent or gross negligence. In no event
* may a licensor, author or contributor be held liable for indirect,
* direct, other damage, loss, or other issues arising in any way out
* of dealing in the work, even if advised of the possibility of such
* damage or existence of a defect, except proven that it results out
* of said person's immediate fault when using the work as intended.
*/
#include <sys/param.h>
#include <err.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include "defs.h"
#include "compress.h"
#include "minilzop.h"
#include "pack.h"
__RCSID("$MirOS: contrib/hosted/fwcf/tool.c,v 1.7 2007/03/09 22:35:13 tg Exp $");
static __dead void usage(void);
static int mkfwcf(int, const char *, int);
static int unfwcf(int, const char *);
#ifndef SMALL
static int refwcf(int, int, int);
#endif
static int fsopen(const char *, int, int);
int
main(int argc, char *argv[])
{
int c;
int mode = 0, doempty = 0;
int ifd, ofd;
#ifdef SMALL
int calg = -1;
#else
int calg = 0;
const char *infile = NULL, *outfile = NULL;
#endif
const char *dfile = NULL;
const char *file_root = NULL;
fwcf_compressor *cl;
#ifdef SMALL
while ((c = getopt(argc, argv, "D:delMUZ")) != -1)
#else
while ((c = getopt(argc, argv, "C:cD:dei:lMo:RUZ")) != -1)
#endif
switch (c) {
#ifndef SMALL
case 'C':
if (!(calg = strtonum(optarg, 1, 255, NULL))
&& !(calg = compressor_getbyname(optarg)))
usage();
break;
case 'c':
calg = -1;
break;
#endif
case 'D':
if (doempty)
usage();
dfile = optarg;
break;
case 'd':
mode = (mode == 5 || mode == 6) ? 6 : 3;
break;
case 'e':
if (dfile != NULL)
usage();
doempty = 1;
break;
#ifndef SMALL
case 'i':
infile = optarg;
break;
#endif
case 'l':
return (list_compressors());
case 'M':
mode = 1;
break;
#ifndef SMALL
case 'o':
outfile = optarg;
break;
case 'R':
mode = 4;
break;
#endif
case 'U':
mode = 2;
break;
case 'Z':
mode = (mode == 3) ? 6 : 5;
break;
default:
usage();
}
argc -= optind;
argv += optind;
switch (mode) {
case 1:
if (argc != ((dfile == NULL) ? (1 - doempty) : 0))
usage();
break;
case 2:
if (argc != ((dfile == NULL) ? 1 : 0))
usage();
break;
#ifndef SMALL
case 3:
case 4:
if (argc || doempty || (dfile != NULL))
usage();
break;
#endif
case 5:
case 6:
if ((dfile != NULL) || doempty
#ifndef SMALL
|| infile || outfile
#endif
)
usage();
break;
default:
usage();
}
if (argc)
file_root = *argv;
if (mode == 5 || mode == 6) {
ifd = fsopen(argc-- > 0 ? *argv++ : NULL,
O_RDONLY, STDIN_FILENO);
ofd = fsopen(argc-- > 0 ? *argv++ : NULL,
O_WRONLY | O_CREAT | O_TRUNC, STDOUT_FILENO);
if (argc > 0)
usage();
#ifndef SMALL
if (calg == 0)
/* force host tool to compress even without -c */
calg = -1;
#endif
goto get_calg;
}
#ifdef SMALL
ifd = STDIN_FILENO;
ofd = STDOUT_FILENO;
#else
ifd = fsopen(infile, O_RDONLY, STDIN_FILENO);
ofd = fsopen(outfile, O_WRONLY | O_CREAT | O_TRUNC, STDOUT_FILENO);
#endif
if (mode == 2 && dfile != NULL) {
char *data;
size_t sz;
int dfd;
if ((data = fwcf_unpack(ifd, &sz)) == NULL)
return (1);
if ((dfd = fsopen(dfile, O_WRONLY | O_CREAT | O_TRUNC,
STDOUT_FILENO)) < 0)
err(1, "open %s", dfile);
write_aszdata(dfd, data, sz);
close(dfd);
free(data);
return (0);
}
if ((mode == 2) || (mode == 3))
return (unfwcf(ifd, (mode == 3) ? NULL : file_root));
get_calg:
if (calg == -1) {
if ((cl = compress_enumerate()) != NULL)
for (calg = 1; calg < 257; ++calg)
if (cl[calg & 0xFF].name != NULL)
break;
if ((cl == NULL) || (calg == 257))
errx(1, "no compression algorithms found");
calg &= 0xFF;
}
if (mode == 5 || mode == 6)
return (minilzop(ifd, ofd, calg, (mode == 6)));
#ifndef SMALL
if (mode == 4)
return (refwcf(ifd, ofd, calg));
#endif
if (dfile != NULL) {
char *udata, *data;
size_t sz, isz;
int dfd;
if ((dfd = fsopen(dfile, O_RDONLY, STDIN_FILENO)) < 0)
err(1, "open %s", dfile);
read_aszdata(dfd, &udata, &isz);
close(dfd);
data = fwcf_pack(udata, isz, calg, &sz);
isz = write(ofd, data, sz);
free(data);
return (isz == sz ? 0 : 1);
}
return (mkfwcf(ofd, doempty ? NULL : file_root, calg));
}
static __dead void
usage(void)
{
extern const char *__progname;
fprintf(stderr, "Usage:"
#ifdef SMALL
" %s -M { -D <file> | -e | <directory> }"
"\n %s -U { -D <file> | <directory> }"
"\n %s -Z[d] [<infile> [<outfile>]]"
"\n %s -l\n", __progname, __progname, __progname, __progname);
#else
" %s -M [-c | -C <compressor>] [-o <file>]"
"\n { -D <file> | -e | <directory> }"
"\n %s [-i <file>] -U { -D <file> | <directory> }"
"\n %s [-i <file>] -d"
"\n %s -R [-c | -C <compressor>] [-i <infile>] [-o <outfile>]"
"\n %s -Z[d] [-c | -C <compressor>] [<infile> [<outfile>]]"
"\n %s -l\n",
__progname, __progname, __progname, __progname, __progname,
__progname);
#endif
exit(1);
}
static int
mkfwcf(int fd, const char *dir, int algo)
{
size_t sz;
char *data;
data = fwcf_packm(dir, algo, &sz);
return ((size_t)write(fd, data, sz) == sz ? 0 : 1);
}
static int
unfwcf(int fd, const char *dir)
{
char *udata;
if ((udata = fwcf_unpack(fd, NULL))) {
#ifndef SMALL
if (dir == NULL)
ft_dump(udata);
else
#endif
ft_creatm(udata, dir);
}
return (udata != NULL ? 0 : 1);
}
#ifndef SMALL
static int
refwcf(int ifd, int ofd, int algo)
{
char *udata, *data;
size_t sz, isz;
if ((udata = fwcf_unpack(ifd, &isz)) == NULL)
return (1);
data = fwcf_pack(udata, isz, algo, &sz);
return ((size_t)write(ofd, data, sz) == sz ? 0 : 1);
}
#endif
static int
fsopen(const char *fn, int mode, int altfd)
{
return (((fn == NULL) || (*fn == '\0') ||
((fn[0] == '-') && (fn[1] == '\0'))) ? altfd :
open(fn, mode, 0666));
}
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