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/*
$Id: iso-read.c,v 1.9 2005/02/19 11:43:05 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* Program to read ISO-9660 images. */
#include "util.h"
#include "portable.h"
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <sys/types.h>
#include <cdio/cdio.h>
#include <cdio/iso9660.h>
#include <stdio.h>
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
/* Used by `main' to communicate with `parse_opt'. And global options
*/
struct arguments
{
char *file_name;
char *output_file;
char *iso9660_image;
int debug_level;
int no_header;
} opts;
/* Parse a options. */
static bool
parse_options (int argc, const char *argv[])
{
int opt;
/* Configuration option codes */
enum {
OP_VERSION=1
};
/* Command-line options */
struct poptOption optionsTable[] = {
{"debug", 'd',
POPT_ARG_INT, &opts.debug_level, 0,
"Set debugging to LEVEL."},
{"image", 'i', POPT_ARG_STRING, &opts.iso9660_image, 0,
"Read from ISO-9660 image. This option is mandatory",
"FILE"},
{"extract", 'e', POPT_ARG_STRING, &opts.file_name, 0,
"Extract FILE from ISO-9660 image. This option is mandatory.",
"FILE"},
{"no-header", '\0', POPT_ARG_NONE, &opts.no_header,
0, "Don't display header and copyright (for regression testing)"},
{"output-file", 'o', POPT_ARG_STRING, &opts.output_file, 0,
"Output file. This option is mandatory.", "FILE"},
{"version", 'V', POPT_ARG_NONE, NULL, OP_VERSION,
"display version and copyright information and exit"},
POPT_AUTOHELP {NULL, 0, 0, NULL, 0}
};
poptContext optCon = poptGetContext (NULL, argc, argv, optionsTable, 0);
program_name = strrchr(argv[0],'/');
program_name = program_name ? strdup(program_name+1) : strdup(argv[0]);
while ((opt = poptGetNextOpt (optCon)) != -1)
switch (opt)
{
case OP_VERSION:
print_version(program_name, CDIO_VERSION, 0, true);
poptFreeContext(optCon);
free(program_name);
exit (EXIT_SUCCESS);
break;
default:
report( stderr, "%s: %s\n",
poptBadOption(optCon, POPT_BADOPTION_NOALIAS),
poptStrerror(opt) );
report( stderr, "Error while parsing command line - try --help.\n" );
poptFreeContext(optCon);
free(program_name);
exit (EXIT_FAILURE);
}
{
const char *remaining_arg = poptGetArg(optCon);
if ( remaining_arg != NULL) {
if (opts.iso9660_image != NULL) {
report( stderr, "%s: Source specified as --image %s and as %s\n",
program_name, opts.iso9660_image, remaining_arg );
poptFreeContext(optCon);
free(program_name);
exit (EXIT_FAILURE);
}
opts.iso9660_image = strdup(remaining_arg);
if ( (poptGetArgs(optCon)) != NULL) {
report( stderr,
"%s: use only one unnamed argument for the ISO 9660 "
"image name\n",
program_name );
poptFreeContext(optCon);
free(program_name);
exit (EXIT_FAILURE);
}
}
}
poptFreeContext(optCon);
if (NULL == opts.iso9660_image) {
report( stderr, "%s: you need to specify an ISO-9660 image name.\n",
program_name );
report( stderr, "%s: Use option --image or try --help.\n",
program_name );
exit (EXIT_FAILURE);
}
if (NULL == opts.file_name) {
report( stderr, "%s: you need to specify a filename to extract.\n",
program_name );
report( stderr, "%s: Use option --extract or try --help.\n",
program_name );
exit (EXIT_FAILURE);
}
if (NULL == opts.output_file) {
report( stderr,
"%s: you need to specify a place write filename extraction to.\n",
program_name );
report( stderr, "%s: Use option --output-file or try --help.\n",
program_name );
exit (EXIT_FAILURE);
}
return true;
}
static void
init(void)
{
opts.debug_level = 0;
opts.file_name = NULL;
opts.output_file = NULL;
opts.iso9660_image = NULL;
}
int
main(int argc, const char *argv[])
{
iso9660_stat_t *statbuf;
FILE *outfd;
int i;
iso9660_t *iso;
init();
/* Parse our arguments; every option seen by `parse_opt' will
be reflected in `arguments'. */
if (!parse_options(argc, argv)) {
report(stderr,
"error while parsing command line - try --help\n");
return 2;
}
iso = iso9660_open (opts.iso9660_image);
if (NULL == iso) {
report(stderr,
"%s: Sorry, couldn't open ISO-9660 image file '%s'.\n",
program_name, opts.iso9660_image);
return 1;
}
statbuf = iso9660_ifs_stat_translate (iso, opts.file_name);
if (NULL == statbuf)
{
report(stderr,
"%s: Could not get ISO-9660 file information out of %s"
" for file %s.\n",
program_name, opts.iso9660_image, opts.file_name);
report(stderr,
"%s: iso-info may be able to show the contents of %s.\n",
program_name, opts.iso9660_image);
return 2;
}
if (!(outfd = fopen (opts.output_file, "wb")))
{
report(stderr,
"%s: Could not open %s for writing: %s\n",
program_name, opts.output_file, strerror(errno));
return 3;
}
/* Copy the blocks from the ISO-9660 filesystem to the local filesystem. */
for (i = 0; i < statbuf->size; i += ISO_BLOCKSIZE)
{
char buf[ISO_BLOCKSIZE];
memset (buf, 0, ISO_BLOCKSIZE);
if ( ISO_BLOCKSIZE != iso9660_iso_seek_read (iso, buf, statbuf->lsn
+ (i / ISO_BLOCKSIZE),
1) )
{
report(stderr, "Error reading ISO 9660 file at lsn %lu\n",
(long unsigned int) statbuf->lsn + (i / ISO_BLOCKSIZE));
return 4;
}
fwrite (buf, ISO_BLOCKSIZE, 1, outfd);
if (ferror (outfd))
{
perror ("fwrite()");
return 5;
}
}
fflush (outfd);
/* Make sure the file size has the exact same byte size. Without the
truncate below, the file will a multiple of ISO_BLOCKSIZE.
*/
if (ftruncate (fileno (outfd), statbuf->size))
perror ("ftruncate()");
fclose (outfd);
iso9660_close(iso);
return 0;
}

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